Alexander Murray Palmer Haley

Alex Haley was born on August 11, 1921 in Ithaca, New York. He was the oldest son of Simon Alexander Haley and Bertha Palmer Haley. His father was a World War I veteran, and his mother was a teacher. Until he was five years old, he lived in Henning, Tennessee with his grandmother because his father had to finish his studies. Alex was always extremely proud of his father as a young man. Alex Haley graduated from high school at the age of 15 and enrolled at Alcorn A&M College (Alcorn State University) in Mississippi.He focused hard on education, just like his father. In 1939 he quit school, though, to become part of the Coast Guard. He retired from the Coast Guard in 1959, and decided to make writing part of his life. He became a freelance writer. He wrote many articles over the years and got them published, but he got very little pay. Haley can still remember working 16-hours a day for roughly $2,000 a year, surviving on not much but canned sardines. Alex Haley was the author of the R oots phenomenon.He had learned tales of his African ancestor, Kunta Kinte, as a child. Alex was told he was Kunta Kinte’s seventh generation descendant, and after ten years of research he discovered the truth. He went to the village of Juffure, where Kunta Kinte grew up, and listened to the true tales of a tribal historian. Alex said that the most emotional moment of his life was standing at the site in Annapolis, Maryland, where his ancestor stood in chains from Africa more than 200 years ago. Alex Haley also wrote The Autobiography of Malcolm X book.His big breakthrough was in 1962 when he was asked to do an interview with the trumpeter Miles Davis in the Playboy magazine. The interview was so successful that Haley was given a contract to conduct interviews with several other African Americans. Haley interviewed Martin Luther King Jr. , Sammy Davis Jr. , Quincy Jones, and Malcolm X. After an interview with Malcolm X, Alex asked if he could write a book on Malcolm’s l ife. Two years later, The Autobiography of Malcolm X: As Told To Alex Haley book was published.Not only did Alex Haley write these beautiful pieces of art he showed people of color that they too should be proud of their heritage and avoid easily falling victim to the viciousness of racism. Through his writing, Alex Haley was capable of making African Americans feel strong and triumphant. He attempted to depict African Amercians for what they truly opposed to what many racists may perceive them to be. This is in my opinion, is what Alex Haley has contributed to society. If I could meet Alex Haley, I would tell him how much I admire him and his ancestor, Kunta Kinte.I watched Roots from start to finish and it honestly blew my mind. I would also ask a few questions, such as- â€Å"What was it like after you found out Kunta Kinte was your ancestor? † â€Å"How did you feel when you stood at the site where Kunta Kinte arrived? † â€Å"Did you like school? † And final ly, â€Å"Do you know how much I love Roots? † I actually did enjoy researching Alex Haley because I learned a few new things. I had been wanting to learn more about the man who directed Roots. So when I was given this project I was pretty excited.

Surface Perfusion Pressure Method Health And Social Care Essay

The Doppler Effect ( Doppler displacement ) is the alteration in frequence of a moving ridge ( or other periodic component ) for an perceiver traveling comparative to its beginning. It is normally heard when a vehicle sounding a Siren or horn attacks, base on ballss, and recedes from an perceiver. The frequences observed compared to the emitted frequence are: higher frequence for the receiving system during the attack ( called blue switch if we consider light alternatively of the sound ) , equal frequence when at the blink of an eye of passing by, and lower frequence during the recession ( called red displacement if we consider light alternatively of the sound once more ) . The comparative alterations in frequence can be explained as follows: when the beginning of the moving ridges is traveling toward the perceiver, each consecutive moving ridge crest is emitted from a place closer to the perceiver than the old moving ridge. Then each moving ridge takes somewhat less clip to make the perceiver compared to the last moving ridge. Consequently the clip between the reaching of consecutive moving ridge crests at the perceiver diminishes, which leads to an addition of frequence. As we can see in the figure 1 the distance between consecutive moving ridge foreparts is reduced. On the contrary, when the beginning of moving ridges is traveling off from the perceiver, each moving ridge is emitted from a place further from the perceiver than the last moving ridge, so the reaching clip between consecutive moving ridges is increased, it reduces the frequence. As we can see in the figure 1, the distance between consecutive moving ridge foreparts is increased. Figure 1: On the left side of it can be seen that if the beginning is still, an perceiver will merely see the visible radiation with the same wavelength and frequence as it was emitted. However, on the right side it can be seen what happens with a traveling beginning. ( http: //cfcpwork.uchicago.edu/kicp-projects/nsta/2007/sherman/doppler.htm ) should i compose it in mentions? The difference between the ascertained and emitted frequences is straight relative to the velocity of the beginning towards or off from you, giving: ( Eq. 1 ) is the difference between the emitted and observed frequences is the speed of the receiving system relation to the beginning: it is positive when the beginning and the receiving system are traveling towards each other, and negative when they are traveling apart.Laser Doppler FlowmetryLaser Doppler flowmetry ( LDF ) is a non-invasive diagnostic method of mensurating blood flow in tissue. This technique is based on mensurating the Doppler displacement induced by traveling ruddy blood cells ( RBC ) to the enlightening coherent visible radiation as it can be seen in figure 1. Thankss to LDF we can mensurate flux, speed and concentration of the blood cells in motion from the end product of the instrument. These parametric quantities are extracted from the power spectrum of the photocurrent fluctuations produced by reflected light lighting a photodetector. The perfusion measurings can be divided in two types: optical maser Doppler perfusion imagination ( LDPI ) and, laser Doppler perfusion monitoring ( LDPM ) ( 1 ) . In this undertaking LDPM is the m ethod used. Figure 1: the sensing of a ruddy cell flux by optical maser Dopple flowmetry. Laser visible radiation is conducted to the tegument via fibre optics. In the tegument, a little fraction of the visible radiation is reflected by traveling ruddy cells with a shifting frequence ( Doppler consequence ) , whereas the remainder is reflected by the same frequence. Both reflected beams are transmitted to the having optical fibre. ( 2 ) The major advantage of the optical maser Doppler techniques in general is their non-invasiveness and their ability to mensurate the microcirculatory flux of the tissue and fast alterations of perfusion during aggravations. The technique can mensurate perfusion quantitatively ( although relation ) in existent clip. ( 1 ) However, there are some restrictions of the technique: the influence of optical belongingss of the tissues on the perfusion signal, gesture artefact noise, unknowingness of the deepness of measuring, absence of quantitative units for the biological and perfusion zero signal ( at no flow status ) . ( 1 ) Some of them will be farther explained in the undermentioned paragraphs. Light dispersing in tissue Photons are scattered by inactive and dynamic atoms if a beam of optical maser visible radiation illuminates a little country of tissue. Therefore, the traveling RBC/RBCs? ( plural ) impart a Doppler displacement to the photon, what depends on the wavelength, the dispersing angle and the speed vector of the scatterer. Figure 3: Scattering of a photon ( wave vector qi and frequence I†° ) by a traveling RBC ( speed V ) ( reproduced from ( 1 ) ) When a moving ridge with frequence I†° is scattered from a traveling atom with speed V ( figure 3 ) , the Doppler displacement can be written as: ( Eq.2 ) qi is the incident moving ridge vector, Kansas is the wave vector of the scattered moving ridge, and I? is the angle between the speed vector and the sprinkling vector, defined as ( kI-ks ) . If I ± is the dispersing angle and I » the wavelength of the visible radiation in the medium, the Doppler displacement can be written as: ( Eq.3 ) However, there is non merely one alone Doppler displacement measuring. On one manus, in tissue with a big figure of traveling ruddy blood cells, and for sufficiently long photon way lengths, photons undergo more than one Doppler displacement, so, more than one Doppler-shifted frequence is obtained usually. On the other manus, the fact that microcirculatory blood vass have no standard orientation and randomisation of the photons with different dispersing events give rise to a scope of Doppler displacements, even if all the ruddy blood cells move at equal velocity. Hence to obtain an absolute speed measuring one needs to cognize the dispersing angle I ± , the angle between the speed vector and the sprinkling moving ridge vector I? , and the figure of Doppler displacements in the instance of multiple sprinkling. The job is solved theoretically presuming an isotropically distributed angle between the dispersing vector and the speed, furthermore, a corrected frequence spectrum is obtained as if all vectors were parallel. Finally, the end product spectrum is corrected for assorted waies of speed and besides the mention vector, by generation of the Doppler displacement by the differential coefficient of the spectrum. This last measure leads to a velocity-resolved flow measuring. ( 3 ) Depth sensitiveness The measurement deepness depends chiefly on both biological and optical facets. On one manus, it depends on the tissue belongingss such as the construction and denseness of the capillary beds, temperature, pigmentation, oxygenation, etc.. On the other manus, it depends on the wavelength of the optical maser visible radiation and on the distance between theA sending and receivingA fibres in the optical maser Doppler probe.A Since the optical soaking up by blood and, to a smaller extent, the dispersing degree of the tissue differ significantly for green, ruddy and infrared visible radiation, this may be utilized to mensurate the blood flow in tissue volumes of different size and deepness. ( 1 ) Figure 2: calculated wavelength-dependent incursion deepness of visible radiation into tissue ( blood volume 5 % , oxygenation 80 % , H2O content 80 % , ) over a wavelength scope from 500 nanometers to 100 nanometers ( reproduced from ( 4 ) ) . From figure 2 the wavelength dependance of the incursion deepness of visible radiation into tissue can be seen. Green visible radiation ( 543 nanometer ) has a smaller incursion deepness ( 0.33 millimeter ) into tissue than both ruddy visible radiation ( 633 nanometer ) and infrared visible radiation ( 800 nanometer ) , they penetrate to 3.14 millimeters and to 4.3 millimeters severally. ( 4 ) Another issue is the action of the heat, local heat regulates the tegument blood flow ( SkBF ) . In human existences local heating below hurting esthesis evokes vasodilatation, so addition of blood flow, this is mediated both by neurogenic physiological reactions and locally released substances. These interactions between the nervous mechanisms and local factors are highly complex. ( 5 ) Many factors can act upon on the response, but in general, local warming evokes an initial dilator response that peaks in a few proceedingss, followed by a brief low-water mark, and so a secondary dilation to a tableland that can be sustained. What means that the tegument is known to be innervated by two different parts of the sympathetic nervous system: an sympathomimetic vasoconstrictive system part to resting cutaneal vascular tone and a cholinergic vasodilative system having an unknown neurotransmitter coreleased with acetylcholine. ( 5 ) ( 6 ) Figure X A: representative tracing of the local warmer set temperature and the skin temperature at the local heater-skin surface interface during the local warming protocol. Bacillus: representative tracing of the tegument blood flow ( SkBF ) response to the local warming protocol. Local warming resulted in a bimodal addition in SkBF. Prolonged warming in some topics caused a gradual diminution in SkBF after 50 min. Valuess are expressed as a per centum of maximum SkBF during extract with50 millimeter Na nitroprusside. ( 5 ) As we can see from Figure 1A there are distinguishable responses to the local warming. In human existences the skin temperature is about 30 grades, so, if it is heated until 40 and remained changeless as it is done in ( B ) two responses are clearly seen. The flow before the warming is called baseline flow, after warming, a rapid addition in SkBF is found. After a transeunt bead follows and eventually a secondary progressive rise to a tableland is found. After drawn-out warming ( 50 min ) , SkBF begins to worsen in some, but non all, topics despite the care of an elevated tegument temperature. ( 5 ) I have to associate this to the minuts that I chose for my measurings! ! ! ! ! The last facet to reference is the altering the source-to-detector separation, measurings with a flow theoretical account showed that a larger separation between beginning and sensor increased sensitiveness to deeper flows, whereas a smaller separation between beginning and sensor steps more superficially. ( 7 ) Human tegument is the largest organ of the organic structure and has an mean thickness of 1-2 millimeter. LDF mensurating deepness is in the order of 0.5-1 millimetre. Sing incursion deepness and source-to-detector separation and in order to make this deepness a investigation with standard fibre separation ( 0.25 millimeter ) , and a 780 nm wavelength optical maser are used in this undertaking. ( is it ok if I mention this facet of the undertaking already? ) Furthermore, we have chosen the investigation PROBE 457 ( 357 ) Angled Small Thermostatic Laser Doppler Probe to be able to heat the tissue and therefore, the effects of the temperature can be studied. Calibration Standardization is required in comparing the degree of perfusion in different measurings and from different instruments owing to the fact that the optical maser Doppler perfusion signal is a comparative step of flux. Then, we can look into the instrument ‘s stableness, set up the one-dimensionality of the instrument ‘s response to blood flow, set up relationships between different instruments, and associate the reading of the instrument to existent perfusion ( if it is possible ) . There is no gilded criterion until now available for the standardization of the optical maser Doppler instrument for perfusion measurings. The job is that the distribution of blood vass in tissue and optical belongingss is heterogenous, hence it is hard to graduate an instrument to mensurate absolute blood flow per unit volume of tissue. Even though is non the aimed gold criterion, a simple method has been in usage for frequent and easy standardization of optical maser Doppler instrumentality. It is about an aqueous suspension of polystyrene microspheres in Brownian gesture called a motility criterion. The Doppler displacement generated by the atoms in Brownian gesture is used to graduate the system ‘s overall unity for a comparing of measurings at different clip intervals. In our undertaking the investigations are calibrated sing the Brownian gesture of our atoms equal to 250 perfusion units ( PU ) . In our measurings, since no current optical maser Doppler instrument can supply absolute perfusion values ( e.g. ml/min/100 gram tissue ) measurings will be expressed in as Perfusion Units ( PU ) , which are arbitrary. Calibration is required therefore a particular motility criterion PF100 developed by Perimed is used for this undertaking.Skin Perfusion Pressure ( SPP ) methodSkin Perfusion Pressure ( SPP ) is a noninvasive method to mensurate the blood force per unit area of the microcirculatory flow in the tegument at a 1-2mm tegument deepness. SPP measures in millimetres of quicksilver ( mmHg ) the force per unit area at which blood flow foremost returns to the capillaries. Figure X, proctor, turnup and Doppler investigation set-up for SPP. ( I do non like it, I will utilize my exposures ) Skin Perfusion force per unit area is performed by puting a proctor of microcirculation ( in our instance is Laser Doppler investigation ) on the tegument ( see figure X ) , puting a force per unit area turnup on it and blow uping the force per unit area turnup until the microcirculation disappears. Then, the air leaves the force per unit area turnup easy until the microcirculation appears which can be seen by the optical maser Doppler signal on the proctor of the first channel, figure X. Figure Twenty: the microcirculation displacement by the optical maser Doppler can be seen in the first channel, the signal disappears when the force per unit area in the turnup is increased ( impart three ) to barricade the microcirculation at 40 grades, skin temperature by the 2nd channel. When the force per unit area in the turnup decreases, the force per unit area on the tegument returns at one point, the SPP ( T flag ) . The force per unit area in the force per unit area turnup at the clip the microcirculatory flow returns is defined as the SPP at that point of the tegument, on the instep portion of the pes in the instance of figure X. The SPP in mmHg is pointed out in the 3rd channel of figure XX. Even though the best organic structure place on skin perfusion force per unit area in patients with terrible peripheral arterial disease ( see pag X ) is in the sitting place after the pes had been lowered vertically for 10 min, the chief demand is that the height degree of the mensural portion coincides with the degree of the bosom ( 8 ) . The measurings in the undermentioned undertaking are taken at supine place since the voluntaries are healthy and it is a comfy place. SPP value is a mention value that measures the chance of healing of hurts and ulcers related to the force per unit area measured on the tegument every bit good as diagnosings CLI and PAD diseases. There have been several statistical surveies about SPP cut-off value as we can see in table Ten, sum uping the interval between 30-40 mmHg is the critical scope, below ulcers and hurts will now mend, above they will. ( 9 ) ( 10 ) ( 11 ) ( 12 ) ( 13 )ReportStandardsConsequenceCastronuovo, Adera, Smiell and Price, 1997 & lt ; 30 mmHg Command line interface Lo, Sample, Moore and Gold, 2009 & lt ; 30 mmHg lesion unlikely to mendAa†°? 30 mmHg lesion probably to mend Yamada, Ohta, Ishibashi, Sugimoto, Iwata, Takahashi and Kawanishi, 2007 & lt ; 40 mmHg lesion unlikely to mend and severe PADA& gt ; 40 mmHg lesion probably to mend Adera, James, Castronuovo, Byrne, Deshmukh and Lohr, 1995 & lt ; 30 mmHg lesion unlikely to mendAa†°? 30 mmHg lesion probably to mend Table Ten: Reference SPP values for healing and for foretelling CLI and PAD. If the patients suffer of sphacelus, ulcers and/or there is a demand of amputation for other grounds, SPP is a tool to demo with great truth if the hurt would mend or non. A survey shows experimental consequences sing SPP cut-off value when make up one's minding on amputation when enduring from ulcers ( see figure XXXX ) . Figure XXXX: SPP values for all limbs. Group I patients ( n = 32 ) required vascular Reconstruction or major amputation in the sentiment of vascular go toing sawbones. Group II patients ( n = 29 ) were non thought to necessitate vascular Reconstruction to mend and were managed with local debridement, minor amputation, or both. All foot lesions and amputation lesions in group I healed ( reproduced from ( 10 ) ) Figure XXXXXV: Logistic arrested development analysis of patients ( n=29 ) that were non thought to necessitate vascular Reconstruction to mend and were managed with local debridement, minor amputation, or both correlating a given SPP with chance of mending. ( 10 ) From figure XXXXXV it can be seen that SPP values between 20 and 30 millimeter Hg do non foretell mending with great truth. But an SPP value less than 20 mm Hg and an SPP value greater than 30 mm Hg predict the result of local therapy rather accurately. ( 10 ) SPP is non changeless in all organic structure skin surface, as it can be seen in the tabular array below. SPP is normally lower the further of the bosom, therefore it consequences with a really low value when patients suffer from CLI and PAD.DegreeNormal Mean SPPIschemic mean SPPBrachial 52A ±3 55A ±8 Above Knee 50A ±5 46A ±4 Below Knee 42A ±4 22A ±4 Dorsal pes 43A ±4 10A ±2 Dorsal toe 55A ±5 16A ±4 Plantar toe 73A ±5 17A ±3 Table Thirty: different SPP values in both healthy and ischaemic voluntary limbs ( reproduced from ( 14 ) ) .ApplicationsFalten bibliografiesssssssssPeripheral Arterial Disease ( PAD )Peripheral vascular disease ( PAD ) is a narrowing of blood vass that restricts blood flow. It largely occurs in the legs, but is sometimes seen in the weaponries. More restrictedly speech production, PAD includes a group of diseases in which blood vass become restricted or blocked. Typically, the patient has peripheral vascular disease from artherosclerosis, which is a disease in which fatty plaques form in the interior walls of blood vass. Blood coagulums are another procedure taking to PAD, which restrict blood flow in the blood vass. In some instances PAD may happen all of a sudden if an intercalation or when a smudge coagulum quickly develops in a blood vas already restricted by an atherosclerotic plaque, and the blood flow is rapidly cut off. Even thoguh venas and arterias can be affected, but the disease is normally arterial, that is why is called PAD. The chief symptom is pain in the affected country. Since this disease is seen chiefly in the legs, the hurting and other symptoms normally occur when walking. The symptoms may vanish when resting. As the disease becomes worse, symptoms occur all the clip, even at remainder. At the most terrible phase of the disease, when the blood flow is greatly restricted, sphacelus can develop in those countries missing blood supply. There are different phases harmonizing to the badness of PAD. These phases were classified by Fontaine and Rutherford, they can be observed in the undermentioned talbesxXX X. Phase I – Asymptomatic. Phase II – Intermittent lameness. This phase takes into history the fact that patients normally have a really changeless distance at which they have pain. Phase IIa – Intermittent lameness after more than 200 metres of hurting free walking. Phase IIb – Intermittent lameness after less than 200 metres of walking Phase III – Rest hurting. Rest hurting is particularly disturbing for patients during the dark. Stave IV – Ischemic ulcers or sphacelus ( which may be dry or humid ) . Table ten: Different Fointaine categorization phases to sort PAD. Phase I – Asymptomatic Phase II – Mild lameness Phase III – Moderate lameness – The distance that delineates mild, moderate and terrible lameness is non specified in the Rutherford categorization, but is mentioned in the Fontaine categorization as 200 metres. Phase IV – Severe lameness Phase V – Rest hurting Phase VI – Ischemic ulceration non transcending ulcer of the figures of the pes Phase VII – Severe ischaemic ulcers or blunt sphacelus Table Twenty: Different Rutherford categorization phases to sort PAD There are several factors that may increase the chance of PAD for case: smoke, diabetes, fleshiness ( a organic structure mass index over 30 ) , high blood force per unit area ( 140/90 millimetres of quicksilver or higher ) , high cholesterin ( entire blood cholesterin over 240 mgs per decilitre, or 6.2 millimoles per litre ) , increasing age ( particularly after making 50 old ages of age ) , high degrees of homocysteine ( a protein constituent that helps construct and keep tissue ) and a household history of peripheral arteria disease, bosom disease or shot. ( 15 ) About the diagnosing, PAD can be diagnosed by comparing blood force per unit areas taken supra and below the point of hurting. The country below the hurting ( downstream from the obstructor ) will hold a much lower or undetectable blood force per unit area reading. There are several techniques to name PAD, the most common used in the infirmaries are Ankle-brachial index ( ABI ) , computed Tomographic Angiography ( CT ) , Magnetic Resonance Angiography ( MRA ) , Doppler and Ultrasound ( Duplex ) imagination, Angiography, and Skin Perfusion Pressure ( SPP ) . I will shortly specify them subsequently on this undertaking. If the individual fumes, it is extremely recommended to halt smoke instantly. Exercise is basic to tret PAD. Infections in the affected country should be treated quickly. Surgery may be required to try to handle clotted blood vass. Sing the last phases, limbs with sphacelus must be amputated to forestall the patient to decease. * 5. Hirsch AT, Haskal ZJ, Hertzer NR, Bakal CW, Creager MA, Halperin JL et Al. ACC/AHA 2005 guidelines for the direction of patients with peripheral arterial disease ( lower extermity, nephritic, mesenteric, and abdominal aortal ) : executive summary a collaborative study from the American Association for Vascular Surgery/Society for Vascular Surgery, Society for Cardiovascular Angiography and Interverntions, Society for Vascular Medicine and Biology, Society of Interventional Raidology, and the ACC/AHA Task Force on Practice Guidelines ( Writing Committee to Develop Guidelines for the Management of Patients With Peripheral Arterial Disease ) endorsed by the American Association of Cardiovascular and Pulmonary Rehabilitation ; National Heart, Lung, and Blood Institute ; Society for Vascular Nursing ; Transatlantic Inter-Society Consensus ; and Vascular Disease Foundation. J Am Coll Cardiol 2006 ; 47:1239-312. WHAT HAPPENS IS IT IS A REFERENCE OF A REFERENCE? ?Critical Limb Ischemia ( CLI )Critical limb ischaemia is defined as limb hurting happening at remainder, or impending limb loss caused by terrible via media of blood flow to the affected appendage. Although the trademark of peripheral arterial occlusive disease is an unequal blood flow to provide critical O demanded by the limb, critical limb ischaemia ( CLI ) occurs merely after chronic deficiency of blood supply, puting off several pathophysiologic events that finally lead to trophic lesions or rest hurting of the legs, or both. ( 15 ) The international consensus about CLI is the undermentioned: any patient with chronic ischaemic remainder hurting, ulcers, or sphacelus attributable to objectively turn out arterial occlusive disease. ( 16 ) It is to be stated that CLI is non to be confused with acute occlusion of the distal arterial tree, alternatively it is a procedure that occurs in a scope frame of months to old ages and, if left untreated, it leads to limb loss secondary to miss of equal blood flow and oxygenation through the distal appendages. ( 15 ) CLI is a terrible manifestation of PAD, so, the patients would be classified in the more terrible terminals of the Fontaine ( present III-IV ) or Rutherford categorization ( grades V-VII ) , seetables X and XX severally. Figure Ten: SPP method measures the chance of mending related to the force per unit area measured on the tegument every bit good as diagnosings CLI and PAD. ( from Vasamed AB, company, non article, it is merely a powerpoint page of a presentation of a company ) ( can I utilize it? ) SPP can name both CLI and PAD therefore, they can be treated. Which is of high relevancy if we consider the high mortality of these diseases.Alternate methods to SPPIn order to name both PAD and CLI several methods can be used, they are the undermentioned: Ankle-brachial index ( ABI ) : A a non-invasive method that compares the blood force per unit area in the pess to the blood force per unit area in the weaponries to find how good the blood is fluxing. Normally the ankle force per unit area is at least 90 per centum of the arm force per unit area, with terrible contracting it may be less than 50 per centum. If an ABI reveals an unnatural ratio between the blood force per unit area of the mortise joint and arm, more testing Is needed before doing a diagnose. Computed Tomographic Angiography ( CT ) : a non-invasive trial that shows the arterias in the venters, legs and pelvic girdle. It is peculiarly utile in patients with pacesetters or stents.A A Magnetic Resonance Angiography ( MRA ) : a non-invasive trial that gives information similar to that of a CT without utilizing X-rays.A Doppler and Ultrasound ( Duplex ) imagination: a non-invasive method that visualizes the arteria with sound moving ridges and measures the blood flow in an arteria to bespeak the presence of a blockage.AAAngiography: ( by and large reserved for usage in concurrence with vascular intervention processs ) an invasive method that consists on inject a contrast agent into the arteria and X raies are taken to demo blood flow, arterias in the legs and any obstructions that may be present.1ST Part: TEMPERATURE DEPENDENCE OF SPPQuestionhypertext transfer protocol: //dwb.unl.edu/teacher/nsf/c01/c01links/www.science.mcmaster.ca/biology/4s03/thermoregulation.html RESPONSES TO HEAT: When the organic structure is exposed to heat ( Sun, fire, excessively much vesture ) , body temperature rises. Skin heat receptors and blood convey these alterations to the hypothalamic thermoregulator. The thermoregulator inhibits the sympathomimetic activity of the sympathetic nervous system, which control vasoconstriction and metabolic rate, therefore doing cutaneal vasodilation and cut downing BMR. This causes an addition in heat loss via the tegument and a lessening in heat production in the nucleus. If the heat is sufficiently intense, the cholinergic sympathetic fibres, which innervate perspiration secretory organs release ACh, exciting perspiration. Sweating is the most effectual nonvoluntary heat contending response in adult male. Behavioral responses to heat, such as lassitude, resting or lying down with limbs spread out, decreases heat production and increases heat loss. Wearing loose and light vesture, fanning and imbibing cold drinks besides helps wit h heat loss. 40 grades ( a temperature that opens more capillaries, so it is thought that it could increase the An increment vasodilatation and decrease of BMR can increase the flow, so the Doppler signal would be increased. It is something to be tested but the chief inquiry is if these metabolic alterations will act upon SPP. If the optical maser Doppler would merely increase the signal with no alteration of SPP, it would be an tremendous aid for the doctors to acknowledge the SPP value on the monitored information. This old inquiry is to be tested and discussed carefully.SET-UPPF 472 digital/analog convertorA convertor from linear signal to digital signal will be needed in the 2nd portion of the measurings. It is present even though it is non needed in our first portion.PF 5000 Doppler proctor which includestwo PF 5010 Laser Doppler Perfusion Monitoring ( LDPM ) unitsThe PF 5010 LDPM Unit is used for blood perfusion measurings based on optical maser Doppler engineering. Laser Doppler measures the sum, local microvascular flow including capillaries, arteriolas, venulas and shunts. Each unit i ncludes one optical maser Doppler investigation.PF 5020 Temperature unitThe PF 5020 Temperature Unit is used toA execute local heat aggravation and/or temperature measurings. The PF 5020 unit has two connections for either thermostatic optical maser Doppler probes and/or temperature measuring detectors.one ( Numberss or letters ) PF 5050 Pressure UnitThe PF 5050 Pressure Unit is used to command additive or instant turnup force per unit area deflation. It has been developed to simplify and standardise trials such as Skin Perfusion Pressure ( SPP ) .Computer with Perimed PSW 2,5 packagePSW 2,5 package will let to obtain the measurings of the PF 5000 Doppler proctor numerically.Pressure turnups 10 centimeter and 12 centimeters HokansonA force per unit area turnup is a device that shows the force per unit area in mmHg inside the cuff chamber. The breadth required will depend on the breadth of the mark to be measured. The turnup should be 20 % wider than the mark. In our instance, the ma rk is the in-between calf. hypertext transfer protocol: //www.deh-inc.com/userfiles/image/SC12D % 20PP.jpgPressure pump WelchAllyn 2005A force per unit area pump will pump air into the force per unit area turnup.457 ( 357 ) Angled Small Thermostatic Laser Doppler ProbeProbe 457 is a combined optical maser Doppler and thermostatic investigation used for local heat aggravation while blood perfusion is measured. Its optical fibers are integrated in the het country and therefore the whole tissue country under the investigation will be heated. Its fibre separation is 0.25 millimeter. investigation 457457 Probe SupportA support is required in order to enlarge the country of the investigation therefore avoid tilting and increase contact with the investigation. ( our sentiment until the following experimentsssssssss ) ? ?PF 105-3 double-sided adhesive stripsStrips are used for arrested development of the tegument and the investigationPF 1000 Calibration DeviceAqueous suspension of polystyrene microspheres in Brownian gesture used for the standardization of the investigations in this undertaking. Photosssss, cameraaaaaaaaMethodTo get down with, the measuring devices have to be calibrated. The optical maser Doppler investigation is calibrated by a motility criterion obtained from Perimed. Since the signal from PF 5000 Doppler proctor is so sent to the PF 472 digital/analog convertor before making the computing machine, so, laser Doppler signal, temperature and force per unit area have to be calibrated every bit good. It is easy since the Numberss are shown in the proctor, so an easy correlativity can be found. Skin Perfusion force per unit area is performed by puting a proctor of microcirculation ( in our instance is laser Doppler investigation ) on the tegument, in our instance is placed in the in-between calf as it is showed in figure Ten. ( PHOTO ) . In our instance we will antecedently line-up the 457 Probe Support, it is obvious that a support will convey more stableness, avoiding tilting and increasing the contact with the investigation? A? . Furthermore, by a Micrometer? A? a degree of 0.5mm of difference has been found between the standard support and the investigation. Perimed employees have lined it up. Then, the force per unit area turnup is placed on the Doppler investigation 457 which is contained inside the lined-up support, being careful that the turnup has the investigation precisely in the center of the blow uping rectangle as it can be seen in figure X. The following measure is taken when the received signal from the optical maser Doppler investigation is regular and familiar, as it can be seen in figure Ten. When can get down the measuring once we receive a regular signal ( basal? A? ) from the optical maser Doppler investigation, so, the force per unit area turnup is inflated until the microcirculation disappears, see figure X. Figure X The three channels are shown through PSW 2,5 package: Doppler laser signal ( perfusion units, PU ) , temperature signal ( Celsius grades ) , force per unit area of the force per unit area turnup ( mmHg ) . The first channel shows the alteration of the optical maser Doppler from a normal flow signal to a low cubic decimeter flow signal. The 2nd channel shows the changeless temperature of the voluntary, 30,9 Celsius grades. ? grades Celsius? The 3rd channel shows how the force per unit area turnup is inflated to accomplish low flow circulation. Then, around 30 seconds are needed in order to stabilise the circulation, so until we get a regular signal from the optical maser Doppler investigation ; hence a level and humdrum signal is obtained. Consequently, the air can be let out by the force per unit area turnup easy until the microcirculation appears as it can been in figure X, which can be seen by the optical maser Doppler signal on the proctor from figure X. The force per unit area in the force per unit area turnup at the clip the microcirculatory flow returns is defined as the SPP. This modus operandi is repeated three times at skin temperature ( 20-35 ( look at the values obtained! ) degrees Celsius ) Figure X The three channels are shown through PSW 2,5 package: Doppler laser signal ( perfusion units, PU ) , temperature signal ( Celsius grades ) , force per unit area of the force per unit area turnup ( mmHg ) . The first channel shows the alteration of the optical maser Doppler from a low-flow signal to a normal flow signal. The 2nd channel shows the changeless temperature of the voluntary, 30,9 Celsius grades. ? grades Celsius? The 3rd channel shows how the force per unit area turnup is easy deinflated and the SPP is pointed out and the Afterwards, the Doppler investigation is heated until a temperature that brings a vasodilatation response ( addition of optical maser Doppler signal ) without hurting ( B ) ! ! ) , 40 grades Celsius. Even though 15 proceedingss are needed harmonizing to ( KRISTIANNN! ) , around two proceedingss will be considered in order to open a important measure of capillaries since in infirmaries the continuance of the trial plays an of import function when taking the medical method to be used. Then, 3 more measurings with the old modus operandi are taken at this new temperature, 40 grades Celsius. Following, the systolic force per unit area is measured in all the voluntaries merely as a standard cheque. hypertext transfer protocol: //www.aqualyte.com.au/pdf/PHYSIOLOGICAL % 20RESPONSE % 20TO % 20HEAT % 20EXPOSURE.pdf ( non used, but may be needed )ConsequenceHere follows the list of the 25 voluntaries, with a sum of 28 battalions of measurings. Measurements in the same voluntaries were taken in different yearss. For each voluntary, as it is explained in the Method, 3 recordings are taken and averaged at Tvolunteer, plus 3 recordings are taken an averaged at T=40 grades C.Volunteers:NameAgeWeightGenderAnders 42 86 adult male Anders W.AAadult male Asa 48 55 kvinna Bjorn 51 91 adult male Cia 52 70 kvinna Eva 56 53 kvinna Han dynasties 50 79 adult male Hans-Erik 49 77 adult male Jan 58 86 adult male Kjell 75 85 adult male Kristian Euren 49 88 adult male Kristian Euren 2 49 88 adult male Microphone 48 87 adult male Dent A 36 A 100 adult male Niklas 35 80 adult male Oskar 30 92 adult male Patrik 31 70 adult male Per 42 72 adult male Peyman 38 81 adult male Reyhan 28Akvinna Reyhan 2 28Akvinna Sara 33 64 kvinna Susanne 35 54 kvinna Susanne 2 35 54 kvinna Sven 55 73 kvinna Thomas B. 48 63 adult male Thomas C. 36 75 adult male Table: voluntaries ‘s name, age, weight and gender.a ) SPP vs temperature and clip-interesting consequences for our undertaking can be found in the tabular array in the Annex, here? -all the consequences obtained ( Wizard Reports ) can be found in the Annex? The chief goul in this portion of the undertaking is to cipher if the Temperature is a factor that influences the SPP, the influence of clip will be studied at the same clip. During the recordings a somewhat addition of the SPP values at the same temperature was noticed for each measuring. In order to explicate it and to seek to avoid this factor act upon our decisions about the temperature, the difference between the first recorded value and the undermentioned values ( until 6 recordings ) for each measuring has been calculated to get down with. The consequences are plotted on figure Ten. Figure X: Pressure difference between the first value in each measuring, and the undermentioned ( until six ) , in each measuring. With a sum of 26 measurings. In order to do the consequences and farther decisions of the graph X more clear, an norm of the differences between the first recordings and the remainder of the recordings for all the 26 considered measuring is calculated and used for farther computations in table Ten.average value difference between the 1st recording and the 2nd ( Tvolunteer )4,75 mmHgaverage value difference between the 1st recording and the 3rd ( Tvolunteer )6,15 mmHgaverage value difference between the 1st recording and the 4th ( T=40 d C )9,56 mmHgaverage value difference between the 1st recording and the 5th ( T=40 d C )9,15 mmHgaverage value difference between the 1st recording and the 6th ( T=40 d C )11,15 mmHgTable Ten: average value differences between the 1st and the remainder recordings in each voluntary. From the table Ten we can see that all values of SPP addition on clip and non merely between the 3rd and 4th recordingS, when the temperature is increased till 40 grades. The biggest difference is between the 1st and the 2nd. Just to do certain that it is non an mean artefact, it is deliberate how would alter the deficiency of the first measuring on the overall consequence at Tvolunteer, without warming, see figure XX. Figure Twenty: average values at Tvolunteer, sing merely the 2nd and the 3rd recorded values in each measuring vs sing all three Tvolunteer values obtained. Decision: the 1st value could be excluded. After ciphering the influence of the clip on the recordings and in order to analyze the influence of the temperature on the SPP consequences, the undermentioned consequences will be considered both excepting the first recordings for each measuring, and without excepting them. 156 recordings realized and averaged. 78 averaged values used for farther computations. A Bacillus C 1ST, 2ND, 3d averaged entering values. Tvolunteer 4TH, 5TH and 6TH averaged entering values. T=40 degrees Celsius 2ND, 3RD averaged entering values. Tvolunteer 62,2 68,0667 64,5 60,6 63,2 61,55 38 47,7667 38,8 906 96,8667 88,15 783 95,55 88,15 57,8 68,7333 62,4 532 61,9333 56,8 508 57,3667 54,35 57,6 61,8333 59,7 56,7 55 55,8 81,4 87,2333 82,05 42,8 55,3333 38,4 59,8 59,1333 60,15 61,5 69,6667 61,25 43,0 51,8667 47,3 70,7 77,5333 72,4 77,3 75,25 77,55 58,6 64,4667 57,85 53,6 59,0333 55,8 523 56,3 54,65 60,5 63,3667 60,3 36,1 48,8667 39,5 44,3 47,4 46,2 73,0 82 77,1 69,1 75,3 73,75 90,9 95,8333 93,35 table ten: averaged values in each voluntary depending on the temperature recorded, A at Tvolunteeer. B at T=40. C, at Tvolunteer excepting the 1st recording. The first chief consequence from this first portion will ensue from deducting B-A and averaging the ensuing vector. The 2nd, from deducting C-B. Thus an overall position of the influence temperature can be understood.B-A=6,32 mmHgaverage value of the averaged T=40degrees-values, subtracted from all six Tvolunteer-values.C-A= 4,5 mmHgaverage value of the averaged T=40degrees-values, subtracted from the Tvolunteer-values ( excepting the 1st recorded value ) .B ) Baseline V T and clip ( baseline? Stabile phase? ; how could I explicate that? )In this portion the baseline of both laser Doppler signal ( PU ) and from the turnup ( mmHg ) are studied. Just before pumping both a stable optical maser and force per unit area signal are wanted. Once pumped, after few seconds ( even though 30 sec have been considered in instance ) both signals are stable once more. We have seen that the SPP value is lightly increasing along the recording. The inquiry is if baseline is increasing every bit good or if it is changeless along the measuring, along the recording of the 6 SPP values ( the 3 first recordings at Tvolunteeer, and the 3 following recordings at T=40 grades C ) . First, the optical maser Doppler signal received is studied. The signal should be expected to be higher when the temperature is increased in the tegument surface, accordingly, the alterations of flow can be more ascertained and therefore the obtainance of SPP is simpler. Merely the 10 first measurings are taken into history for the computations. We will analyze it during Tvolunteer and T=40 grades Celsius. From the tabular array X ( ANNEX ) , we can see the consequences of PU in each of the stairss, extracted from the â€Å" Wizard studies † : TvolunteerAAAAAAAAAAAT=40 grades CAAAAAAA1st pumping 1st stabilisation 2nd pumping 2nd stabilisationA3th pumping 3th stabilisation 4th pumping 4th stabilisations 5th pumping 5th stabilisations 6th pumping Plutonium mmHg Plutonium mmHg Plutonium mmHg Plutonium mmHg Plutonium mmHg Plutonium mmHg Plutonium mmHg Plutonium mmHg Plutonium mmHg Plutonium mmHg Plutonium 7,94 117,29 17,58 0,06 4,67 124,93 19,82 0 4,84 132,99 100,93 0 6,18 137,94 46,74 0 6,21 130,85 49,31 0 6,98 5,74 148,17 14,14 1,35 6,03 146,75 14,61 0,03 6,58 139,49 38,12 0 6,8 139,44 32,49 0 6,65 154,31 25,15 0 6,43 4,85 144,22 14,65 2,94 5,31 153,1 12,48 0,94 5,21 135,74 30,76 0 5,41 146,66 27,65 0,21 5,21 141,12 30,27 0,3 5,34 5,01 137,77 23,79 0,43 4,91 133,32 24,12 0,4 5,1 140,34 33,16 0 5,36 129,5 26,6 0,48 5,2 132,77 28,5 0,5 5,24 2,86 145,89 15,62 0,84 3,19 138,54 11,93 0 3,27 139,53 34,66 0 3,58 148,84 27,68 0 3,63 149,15 29,23 0,39 3,65 5,01 137,77 23,79 0,43 4,91 133,32 24,12 0,4 5,1 140,34 33,16 0 5,36 129,5 26,6 0,48 5,2 132,77 28,5 0,5 5,24 5,2 147,06 17,32 0,47 4,97 154,36 17,05 1,06 4,94 138,69 45,79 0,01 5,34 147,44 40,16 1,29 5,75 128,04 45,72 1,43 5,95 5,51 142,98 21,32 1,09 6,57 136,24 18,15 1,24 5,76 145,81 58,47 0 5,68 141,28 37,53 1,78 5,49 137,24 34,87 1,16 5,87 6,67 151,08 11,93 1,46 6,36 138,32 11,33 0,25 6,02 129,92 36,08 0 6,71 135,67 29,24 0,5 6,37 143,39 41,29 0 6,65 5,6 116,37 18,12 0,38 6,12 123,72 20,55 0,2 5,36 139,05 15,56 0,4 4,45 121,43 21,44 0,87 4,39 118,44 19,94 0,51 4,27 Table X ( possibly let ‘s set in the extension? ) To mensurate the stableness during pumping and non-pumped, the wired norm for each measure is calculated for all 10 measurings, at Tvolunteer:A=2ND PU pumped value -1st PU pumped valueB=3th PU pumped value 1st PU pumped valueAt T=40 grades C:C=4th PU pumped value -1st PU pumped valueD=5th PU pumped value -1st PU pumped valueE=6th PU pumped value -1st PU pumped valueNow, averaging each vector obtained: A -0,135 Bacillus -0,221 C 0,048 Calciferol -0,029 Tocopherol 0,123 Table Ten: mean values of laser signal of all the stabile stairss for all the voluntaries in the pumped stabile phase. It can be seen from table Ten that neither the addition on temperature nor the development on clip are relevant on the PU signal while pumped ( occlusion ) . Then, no farther computations will be taken. Now we consider the measurings of PU on the stabile period before and after the pumping of the turnup, were the first measuring is after the first pumping. At Tvolunteer:F=2ND PU stabile value -1st PU stabile valueG=3th PU stabile value – 1st PU stabile valueAt T=40 grades C:H=4th PU stabile value -1st PU stabile valueI=5th PU stabile value -1st PU stabile valueAs expected from ( bibliographty? ? ? A? ) the addition of T leads to a better signal PU as can be seen in G, H, I vectors. Now, averaging each vector obtained: F -0,41 Gram 24,843 Hydrogen 13,787 I 15,452 Table Ten: mean values of laser signal of all the stabile stairss for all the voluntaries in the unpumped stabile phase. As expected from ( bibliographty? ? ? A? ) the addition of T leads to a better signal PU as can be seen in G, H, I averaged vectors. To complete with this portion the force per unit area ( mmHg ) is studied. Again, merely before pumping a stable force per unit area signal from the turnup is wanted. The inquiry is if this stableness is changeless along the measuring, along the recording of the 6 SPP values. Merely the 10 first measurings are taken into history for the computations. We will analyze it during Tvolunteer and T=40 grades Celsius. If now we consider the measurings of force per unit area on the stabile period before and after the pumping of the turnup, were the first measuring is after the first pumping. At Tvolunteer:FF=2ND force per unit area stabile value -1st force per unit area stabile valueGG=3th force per unit area stabile value – 1st force per unit area stabile valueAt T=40 grades C:HH=4th force per unit area stabile value -1st force per unit area stabile valueII=5th force per unit area stabile value -1st force per unit area stabile valueIt can be seen that neither the temperature nor the clip influence on the force per unit area. Now, averaging each vector obtained: FF -0.4930 GG -0.9040 HH -0.3840 Two -0.4660 Table Ten: mean values of force per unit area of all the stabile stairss for all the voluntaries in the unpumped stabile phase.Discussion2nd Part: Pressure CORRELATION BETWEEN CUFF AND PROBE ON LIMB PROTOTYPEQuestionThe chief job is that when we measure the air force per unit area in the force per unit area turnup, this force per unit area has been assumed to correlate to the force per unit area applied by the investigation to the tegument. However, this is an indirect measuring that has ne'er been decently evaluated until now. To give an illustration of how unsure is the premise of correlativity between the force per unit area in the turnup and the force per unit area applied by the investigation to the tegument: if the force per unit area turnup is attached really tight on top of the investigation, the turnup will definitively do a force per unit area onto the investigation and accordingly, onto the tegument ; however, the air force per unit area will demo still 0mmHg. To get down with a simple mark, this correlativity is to be tested on limb paradigms, different diameters of tubings folded with different breadths and hardness of froths. Furthermore, there are several constructs unknown: the optimum size of the investigation, the optimum arrangement of the turnup and the investigation, the optimum testing tissue and the optimum methodological analysis of acquiring consequences. In this portion we the investigation size, the investigation and turnup arrangement and the â€Å" tissue † ( represented by a froth hardness and breadth ) are tested.SET-UPPF 472 digital/analog convertorA convertor from linear signal to digital signal, to change over the signal from the force per unit area detector into digital signal sent to Perimed PSW 2,5 package.PF 5000 Doppler proctor which includestwo PF 5010 Laser Doppler Perfusion Monitoring ( LDPM ) unitsThe PF 5010 LDPM Unit is used for blood perfusion measurings based on optical maser Doppler engineering. Laser Doppler measures the sum, local microvascular flow including capillaries, arteriolas, venulas and shunts. Each unit includes one optical maser Doppler investigation.P F 5020 Temperature unitThe PF 5020 Temperature Unit is used toA execute local heat aggravation and/or temperature measurings. The PF 5020 unit has two connections for either thermostatic optical maser Doppler probes and/or temperature measuring detectors.one ( Numberss or letters ) PF 5050 Pressure UnitThe PF 5050 Pressure Unit is used to command additive or instant turnup force per unit area deflation. It has been developed to simplify and standardise trials such as Skin Perfusion Pressure ( SPP ) .Computer with Perimed PSW 2,5 packagePSW 2,5 package will let to obtain the measurings of the PF 5000 Doppler proctor numerically.8 A201 FlexiForce force detectorsSensitive force detectors are needed in order to correlate the mechanical force per unit area of the turnup and of the investigation.SC10 and SC20 Hokanson force per unit area turnups ( 10 centimeter and 12 centimeter )A force per unit area turnup is a device that shows the force per unit area in mmHg inside the cuff chamber. T he breadth required will depend on the breadth of the mark to be measured. The turnup should be 20 % wider than the mark. In our instance, the mark is the in-between calf. hypertext transfer protocol: //www.deh-inc.com/userfiles/image/SC12D % 20PP.jpgUPC2.5 Hokanson force per unit area turnup ( 2.5 centimeter )A force per unit area turnup of 2.5 centimeter of breadth, which will needed for the smallest tubing ( Xcm diameter ) .Pressure pump WelchAllyn 2005A force per unit area pump will pump air into the force per unit area turnup.Two 457 ( 357 ) Angled Small Thermostatic Laser Doppler ProbeProbe 457 is a combined optical maser Doppler and thermostatic investigation used for local heat aggravation while blood perfusion is measured. Its optical fibers are integrated in the het country and therefore the whole tissue country under the investigation will be heated. Its fibre separation is 0.25 millimeter. investigation 457457 Probe SupportA support is required in order to enlarge the country of the investigation therefore avoiding leaning and increasing contact with the investigation. ( our sentiment until the following experimentsssssssss ) ? ?457 Probe Support ( lined-up )A support is required in order to enlarge the country of the investigation therefore avoiding leaning and increasing contact with the investigation. ( our sentiment until the following experimentsssssssss ) . Since it was tested that the bottom portion of the support was 0.5mm deeper in tallness than the investigation, a lining-up has been realized in order to prove the consequence of this difference on the consequences.Probe 457 Silicone SupportA more flexible support than the Probe 457 Support will be tested.PF 105-3 double-sided adhesive stripsStrips are used for arrested development of the tegument and the investigationTen, 5cm and 10.5 centimeter diameter tubingsHard plastic tubings that are used as a limb par adigm.1mm, 5mm, 2cm soft froth and 1.5cm, 2.5cm difficult frothThe thickness and hardness of the different froths will play the tissue function around the tubings. Robin goodfellows, peacesaˆÂ ¦ . PHOTO Limb paradigm, tubing of 10cm of diameter ) PhotographMethodConditioning and standardization of the detectorThe detector Flexiforce is constructed of two beds of substrate composed of polyester movie. On each bed a conductive stuff ( Ag ) is applied, followed by a bed of pressure-sensitive ink. When force applied the electric resistance of Ag diminishes ( the conductance additions ) . Since the electric resistance is reciprocally relative to coerce, the force value can be obtained. After having the detectors the first measure to develop was to mount the electronic box, aid from one expert in electronics was needed from Perimed. The first measure before get downing the measurings is to condition the detector every bit good as understanding how it works. Unfortunately it has been clip demanding to carry through both stages. Here it is the detector ‘s electronic box set-up, where the V entire power has been changed from -1 V to -0.165 V to avoid impregnation of the electromotive force, hence, higher force end product values where obtained. Figure ten: recommended and innitial circuit of the Flexiforce detector. After the first group of measurings, the V T power has been changed from -1V to -0.165 V to avoid impregnation. About the conditioning, the User Manual have been followed exhaustively. The undermentioned stairss have been required to condition the detector: Design of 2 Pucks, little force concentrators and one for each side of the feeling country, to guarantee that all the force travels through the sensing country. It was necessary since the contact country of the burden was excessively big for the sensing country, which has 9.53 millimeter of diameter, see figure X. Perimed manufactured the Pucks. Double-side spines were used to repair the feeling country with the Pucks. Figure ten: Flexiforce sensor A-201. It has a thickness of 0.208mm, length of 197mm and feeling country of 9.53 millimeters diameter. It was recommended to put 110 % ( or more ) of the maximal trial burden onto the detector for about 3 seconds, reiterating in the process 5 times. However, since the highest trial burden was unknown at the beginning, the first 5 detectors have non been conditioned decently. The initial burden trial to status was around 50 N. The remainder of the detectors have been conditioned at around 70 N. Once the detector is conditioned, a standardization is required. In order to make that two stairss were required. It was suggested to put 1/3, 2/3 and the full trial weight on the detector, and mensurating during the timeframe to be used during the existent measurings. Since the full trial weight was still unknown at the beginning, 4 different weights ( 50g, 110g, 300g and 700g ) were used in order to obtain the additive relation between the input value and the end product value. The timeframe was considered to be 30 sec. It was tough to happen quotable consequences. Once the additive arrested development was found, the values were calibrated in the plan sing the weight of the objects, so the existent theoretical force of the objects used to be weighted.Initial jobs of the detectorUsing 110g weight objects it was troublesome to acquire quotable measurings. Then, farther double-side spines started to be used between the Pucks and the upper and lower objects. Furthermore, the consequences turned to be more quotable when the weight was situated precisely at the same topographic point in every measuring thanks to two perpendicular walls that supported a horizontal card, that contained boundaries that fitted with the cylinder form of the weight. Unfortunately the detector was found to be excessively sensitive, any somewhat weight difference in lading along the lading country brought different consequences. Linearity ( Error ) +/- 3 % Repeatability +/- 2.5 % of full graduated table ( conditioned detector, 80 % force applied ) Hysteresis & lt ; 4.5 % of full graduated table ( conditioned detector, 80 % force applied ) Drift & lt ; 5 % per logarithmic clip graduated table ( changeless burden of 90 % detector evaluation ) Response Time & lt ; 5 microseconds Output Change/Degree F Up to 0.2 % ( ~0.36 % / A °C ) . Loads & lt ; 10 pound, runing temperature can be increased to 165A °F ( 74A °C ) . Table ten: different detector belongingss. From the tabular array X it can be seen that the force detector has several issues that could take to non-valid consequences. The one-dimensionality mistake is thought to be overcome it by mensurating many times the same value. The hysteresis is checked by utilizing two weights ( 100g, 300g ) and mensurating while puting the first one, puting the 2nd one, and taking and puting the 2nd object while maintaining the first. No farther surveies were done about impetus. Response clip was measured thanks to a force per unit area turnup and it was established to be around 1 sec. Finally, about temperature influence, the room has been kept all the clip between 23 and 25 grades Celsius.The first measuringsInitially 4 parametric quantities have been studied: breadth of the low contact country of the support with the limb, tallness of the support, surface country of the upper contact country of the support with the force per unit area turnup and hardness of the surface of the limb. Alternatively of a human limb, a cylinder of 10cm of diameter and 60cm long has been used with two different hardness froths in each terminal, difficult ( white ) and soft ( Grey ) , figure ten. ( exposure ) . The first measurings were performed with the detector on the surface of the limb, below the investigation support and on top, the turnup environing the limb, see figure X. However, the Pucks moved from the halfway portion of the detector country, the tortuosity and non-vertical forces from the turnup moved the support. So there was low repeatability of the first measurings owing to both high sensitiveness and the instability of the base of the support on top of the limb. The first chief job to work out was instability, the detector was situated on top of the support alternatively, so higher surface was being stack on the limb. On top of the detector a stabilising piece was designed, figure X, in order to avoid non-vertical forces from the force per unit area turnup. Furthermore, tape was carefully set to repair all the objects on top of the protolimb. Consequently the repeatability increased well and since all the interior set-up was more stable, the high sensitiveness was non a job. In order to analyze the parametric quantities different pieces were designed, the farther manufacturation was carried by Perimed. In the tabular array below X all the different pieces are list.WIDTH & A ; HEIGHT ( short cylinders )UPPER CONTACT AREA ( semicylinders )Hardness4cm diameter * 1.5cm tallness 10.3cm radius. 1cm height * 11.3cm lenght 1.3cm midst froth 4cm diameter * 0.85cm tallness 4cm radius. 1cm height * 15cm lenght 0.3cm midst froth 5cm diameter * 1.5cm tallness 4cm radius. 1cm height * 3.2cm lenght 5cm diameter * 0.85cm tallness 2.5cm diameter * 1.5cm tallness 2.5cm diameter * 0.85cm tallness Table Ten: all the pieces designed for farther trials. Since the detector is truly sensitive to temperature and fragile ( it brakes if the feeling country is somewhat folded ) a weight of 110g is used to look into if it is decently calibrated and if it works before each measuring. It is to be mentioned that the spines to repair all the objects on top of each other, and specially for repairing the Pucks on the feeling country brought two chief effects: the advantageous effect is that the objects moved from each other when there were high tortuosity or horizontal forces, which meant that the set-up with the force per unit area turnup had to be improved, merely perpendicular forces were aimed. The drawback is that because of the moving of the objects, the spines moved and they had to be replaced, which lead to 5 broken detectors. In order to pump the force per unit area cuff a manual force per unit area turnup was used at first half of the measurings until and automatic and more precise turnup was found in the company. That allowed to decrease the figure of perennial measurings. With the manual turnup, 20 measurings were considered to be necessary for each force per unit area value from the force per unit area turnup: 100mmHg, 75mmHg and 50mmHg in the bulk of the instances. The procedure got less boring and faster when utilizing the automatic force per unit area turnup, so, merely 4 measurings were carried for each value. The 100mmHg value was ever the get downing value, since it is a considerable high force per unit area the interior set-up can be moved. By get downing with this value we avoid mensurating the 40 other values ( 20 per 50mmHg and 20 per 75mmHg ) in vain. The 2nd job found on the manner of the measurings was that with the electronic circuit the values got saturated at 20mmHg. Therefore the V entire end product was changed from -1 V to -0.156 V to acquire lower electric resistance by the detector, in other words, to acquire higher values of force. Now the impregnation degre

Extreme Motivation Essay

What do employees want and why do they want it? In today’s business world, companies are employing a plethora of motivational techniques, in order to increase their profits. Human resources departments use a merit based motivational program, an approach that focuses on the esteem of the employee, or a combination of both. The merit based, pay-for-performance program, employed by Jack Welch, uses money to motivate high performance, whereas the other approach focuses more on helping an employee feel better about his or her self, which will lead to higher performance. Neither method is right nor wrong, it depends on the organization. The organization needs to make sure it is meeting the needs of its employees. Maslow’s hierarchy of needs suggests people must satisfy five groups of needs in order-physiological, security, belongingness, esteem, and self-actualization. Concerning Maslow’s theory in terms of pay-for-performance, it can be analyzed under each of these five areas. The physiological need is the lowest in the hierarchy, and is generally the easiest to fulfill. This physiological level is the necessities and is usually entry level of pay, which is adequate to motivate a worker to pursue the desired position. Once a person attains the physiological level, security is the next need in line. Security is having the feeling of job security. Pay raises and pension plans are money motivators, thus keeping the employee motivated in achieving company quotas and goals in the long term. Social processes describe belongingness needs in Maslow’s hierarchy. A company that provides an indirect monetary reward through a social gathering satisfies this need. A social gathering helps co-workers develop personal and business relationships with each other. Esteem can be divided into two subcategories, self-respect and respect gained from peers. Monetary forms of company provided benefits such as larger offices, job titles and raises could suit this category. The most difficult level of the hierarchy to reach is self-actualization. According to â€Å"Management with Exercises in Management, â€Å"[†¦] it can be argued these needs must be met entirely from within the individual† (Griffin, 2008, p. 439). Even though self-actualization rests with the individual, a manager can promote an environment where one can realize his or her own potential. With the pay-for-performance incentive plan, one can achieve self-actualization by reaching their goals and receiving a direct reward for the performance in the form of money. Money is not the only motivating factor, as displayed by a company named Seagate (Griffin, 2008, p. 463). With respect to Seagate’s motivational strategies, one must satisfy five groups of needs in order, physiological, security, belongingness, esteem, and self-actualization. The company decided their circumstance was dire enough for drastic measures. Seagate sent 200 managers to a weeklong adventure race in New Zealand. Providing food, water, and air at the adventure retreat, fulfills the managers’ physiological needs. In the racing tasks, the employees learn how to depend and trust each other, thus gaining each other’s security and fulfilling the security need. Belongingness is an important aspect in a career. An individual spends more than forty hours a week with their work family. It is very important that one have a good rapport with their co-workers, in order to achieve self-actualization. In the adventure retreat, the ending task is the race itself. For each leg of the adventure race, you must rely on your teammates and co-workers to complete the race together. The participation of all the employees fulfills the esteem area. Everyone is equal, honest, and encourages building the esteem of all participants. Self-actualization is the final level and most challenging to achieve. At the end of the retreat, participants leave with a new self-awareness and feel they were able to open up to their colleagues. This retreat gives everyone an important role on a team and creates dependence upon each other in order to complete tasks. This team building experience gives individuals the potential for growth and creates an open environment. Every organization has different ideas concerning motivation; Jack Welch is more of a pay-for-performance man (Griffin, 2008, p. 463). When it comes to motivational theory, Jack Welsh, former CEO of General Electric, thinks that financial rewards are the most important. Jack Welch said it best, when he said, â€Å"No company, large or small, can succeed over the long run without energized employees who believe in the mission and understand how to achieve it† (Gallo, 2008). Mr.  Welch firmly believes money is the most important factor in motivating employees in reaching their goals. Two different motivational theories discussed in â€Å"Management with Exercises in Management† correlate the incentive process of the workplace (Griffin, 2008). The expectancy theory is the first theory that relates to Welch’s money incentives. The expectancy theory â€Å"depends on two things—how much we want something and how likely we think we are to get it† (Griffin, 2008, p. 442). The expectancy theory states that if an incentive is there for an employee, the employee must also feel they have a chance to earn it. For instance, if a company offers a monthly bonus of $1000. 00 to an employee to reach a certain goal, the employee must feel they have a chance to reach that goal as well. If the employee does not feel they can reach the goal, even though the bonus is monetary, they will not attempt to reach the goal. Jack Welch also utilizes the reinforcement theory in his approach. The reinforcement theory contends, when positive behaviors are rewarded, they are more likely to be repeated (Griffin, 2008, p. 448). Mr. Welch has a reputation of rewarding his employees with cold, hard cash. By rewarding high performing employees with money, Welch demonstrates he rewards behavior benefitting the company. These monetary rewards are going to motivate the other employees to perform at a high level as well. Motivation seems to have pros and cons when it comes to an organization or firm. Seagate, a Silicon Valley firm, explains why retreats are motivating to workers. Seagate’s tactics are a combination of a human relations and a human resource approach to motivation. The human relations approach emphasizes the importance of social processes in the workplace. Employees want to feel useful and important, have strong social needs, and these needs are more important than money when it comes to motivation (Griffin, 2008, p. 436). Managers give workers the feeling of importance by allowing them some power and control over their daily operations. For example, a manager will allow a team or an individual to provide input on a decision, although the manager already knew the result. This method satisfies basic social needs, therefore, results in higher motivation, which helps individuals reach self-actualization. Another motivational approach one may use would be a human resource approach. The human resource approach takes the concepts of needs and motivation to another level. The human relationists believe the illusion of contribution and participation enhances motivation. The human resource view adds that the contributions themselves are valuable to both individuals and organizations (Griffin, 2008, p. 437). People are able and want to contribute. Management needs to make full use of the available human resources by promoting participation and team building. Carla Cavanagh (2010) believes a human resources approach is a great way to train middle managers, and one could even argue it could extend to the rest of the employees. Cavanagh believes there should be a mutual trust between employees, they should be appreciated, conversed with, involved with decisions and their growth stimulated. When this much attention is shown to an employee, they become empowered and motivated to perform at a high level (Cavanagh, 2010). Seagate’s employees are motivated because, each year, selected managers participate in a weeklong retreat in New Zealand. During the event, they learn important characteristics of a strong culture that endorses trust, accountability, and healthy competition. In addition, they work on skills for adventure racing. When they return to work, the managers apply what they learned to their division (Griffin 2008, pp. 463-464). This environment places individuals in a position that they must ask teammates for help in order to complete tasks. The ability to ask for help eliminates major roadblocks within a team or organization. When an employee can ask for help, they open up to other employees. They begin to fill a social need and therefore, a level of trust. The employees also allow themselves to receive input from another team member or management. When members of teams or work groups give and accept ideas, they can collaborate and solve many issues. This in turn gives the employees a feeling of contribution and provides the organization with resolutions to problems. Everyday companies are looking for new ways to motivate their employees to perform at higher levels more efficiently. There are so many different theories and approaches to motivation, which forces companies to research several different avenues before finally arriving with a solution. Jack Welch and his pay-for-performance method can work in one environment, but a human resource method may work best in a different environment. The success of a motivational strategy essentially depends on the organizations culture, and its leaders. As long as an organization can work off Maslow’s hierarchy as a template, they are on the right path to motivating employees, improving performance, and increasing profits.

How to Go Green Research Paper Example | Topics and Well Written Essays - 1500 words

How to Go Green - Research Paper Example This discussion outlines that it’s not easy being green however, there are many strategies that businesses can adopt to become environment friendly. In order to go green, the business executives should understand the aspects such as pollution of land, water and air; global warming; biodiversity; chemical and nuclear spills; waste disposal; deforestation and desertification. There has been always a conflict between business and ethics therefore, most of the times leaders face difficulties in choosing the business decisions that may fit between the businesses profitability and ethics. In the previous years, business owners did not think about the environment whilst making business decisions, unless, there was some regulation that restricted the specific business strategy. In short, business runners have been neither motivated nor dispirited to consider the environmental concerns seriously. The situation has changed now because the increasing corporate social responsibility of th e organizations is becoming a competitive advantage for the businesses. This paper describes the history of green business and increasing awareness of the companies to go green. Through the examples of the companies, it discusses the practices and programs through which businesses can go green. Apart from that, it also evaluates the importance of the concepts of business ethics in enforcing the businesses to go green.

Locally Produced Goods Versus Imported Goods Essay

Locally Produced Goods Versus Imported Goods - Essay Example It is evidently clear from the discussion that modern days have seen the transportation and use of goods irrespective of their geographical locations. This trend is most of the time attributed to the freedom of mobility as a result of globalization and technological advancements. Thus, sometimes, goods which are imported become cheaper and of better quality than the locally produced ones. Along with this trend, there arises the controversy whether it is right to give priority to imported goods over the locally produced ones on the basis of price and quality. Though the trend seems harmless at the first sight, history proves that this practice will have a number of negative effects. Studies show that locally produced goods are better than imported goods due to many reasons. Firstly, the imported goods do not offer cheap rates over long time. So, if there is more reliance on imported products, the local production will disappear. This will allow foreign companies and nations to have to tal monopoly over the product. They may utilize this situation to exploit the consumers through increased price or reduced quality. This will have a serious impact on the security of any nation. Secondly, when there is higher reliance on imported goods, the local producers will have to stop production. This will affect the local economy at both macro and micro level. Thus, profit on one side is loss on the other. Also, it becomes evident that the plants and animals of a particular place are best suited to the local environment. So, for the inhabitants of that place, consuming the locally available things is the best way for survival in that area. Moreover, it becomes evident that this practice has a devastating effect on culture. A culture is called a culture for various reasons ranging from food habits, specific rites and ritual, a specific dress code, art, and language. So, deviating from any of these for financial gains will lead to a dilution in the culture as has seen around th e world. In addition, there are humanitarian issues too. As noticed, most of the mass produced cheap products are the result of considerable levels of exploitation. In nations like China, which are known for cheap production, workers are deprived of even basic salaries and proper sleep. Furthermore, there are both health issues and environmental issues to be explored. Mass production like industrial farming requires heavy use of pesticides, insecticides, and fertilizers. In addition, the mass-produced products require preservation and transportation. The workers who work in such farms will have to face serious health problems. Also, preservation and transportation involve use of preservatives, and waste of energy. Also, when there is mass production, there is large-scale pollution, exploitation of natural resources, and contaminate of natural resources. When this happens, many locally available varieties are ignored. Thus, over time, there will be the loss of many important varietie s due to this craze for profit. This will, in turn affect the ecology as a whole. Modern days have seen an increasing exchange of goods irrespective of geographic proximity as a result of improvements in communication and transportation. Thus, people use local and import products in their everyday lives even without being aware about the same. This change came along with a controversy regarding the effects of this change. As multinational retailer giants launched their units in countries like China, people witnessed a rising conflict between regional sentiments and globalization. Thus, presently, there is the question whether one should go for locally produced goods or imported goods.

Consumer Promotions Essay Example | Topics and Well Written Essays - 750 words - 1

Consumer Promotions - Essay Example Consumer promotions comprise of activities that aim at enhancing the sales of a given product. This paper seeks to determine the most effective method by delving into the different types of consumer promotions. Sampling is one of the most common methods of consumer promotions. Companies provide free samples to consumers as a way of introducing them to new products in the marketplace (Ogden & Ogden, 2014). Samples offer consumers a chance to consider how much they like a product or something that they would otherwise not buy. For instance, manufacturers of fruit juices can give away free samples at a farmer’s market. Sometimes, sampling can be used as part of a bigger marketing campaign taking place in the radio and local newspapers. According to Tanner and Raymond (2008), coupons are often considered as certificates that entitle their bearer an affirmed saving on the purchase of a given product. Companies distribute these coupons to their consumers through a number of ways. Coupons for the new fruits juice can be mailed, inserted in magazines and newspaper advertisement or enclosed in other products. Winners of these coupons could then win pack of different juices from the manufacturer. Rebates, often referred to as cash refunds, is another effective method of consumer promotion. These can be likened to coupons expect foe the fact that the price reduction occurs after one has made the purchase rather than taking place at the retail shop (Tanner & Raymond, 2008). For this to occur, the consumer sends a given ‘proof of purchase’ to the manufacturer. The manufacturer then ‘refunds the consumer a potion of the purchase price through mail. Rebates can be used in the promotion of the juice products in which consumers that purchase a given number of products are refunded. Price packs refer to flagged offers on product labels or packages that are given to consumers and which allow them to save off the standard price of a product (Yeshin,

Sketches Bill Cleggs and Mathew Dickmans prescription for eudaimonia Essay - 1

Sketches Bill Cleggs and Mathew Dickmans prescription for eudaimonia - Essay Example This may not always augur well with other people, but the doer will always possess the feeling of contentment. Despite this, not all individuals easily achieve this state of eudemonia as easily as they would want to. This is as highlighted by Bill Clegg’s memoirs, Ninety Days as he highlights his struggle to fight addiction and the turmoil he goes through in his quest for a good life. On the other hand, Mathew Dickman’s All American Poem as a collection of poems tries to analyze the various facets of life in relation to the pursuit of the good life. Therefore, in the quest for a good and happy life, both Clegg and Dickman take on varying perspectives in relation to Aristotle’s concept of eudemonia, with Clegg focusing more on the aspect of honesty with self, coupled with sobriety, while Dickson’s prescription heavily lies on a positive attitude incorporated with family ties. Bill Clegg tries to look at the issue of achieving the good life from various perspectives that fit into his predicament of fighting addiction that has threatened to annihilate him. Given that Aristotle views eudaimonia as the seclusion of some life aspects in order to remain with only those that make life desirable, Clegg sets to do away with addiction as the vice is tearing him apart. However, this does not turn out to be easy as he postulates, â€Å"†¦and I can feel that old burn, that hibernating want, come awake†¦the relief that first hit will deliver†¦That craving, once it begins, is almost impossible to reverse†¦Ã¢â‚¬  This serves to show the difficulty that lies in the quest to achieve eudaimonia in Clegg’s perspective. His concept of the good life lies in eliminating the addiction and adopting a life free of it. This guides to the perspective that his concept on happiness and the good life relies on obtaining the state of sobriety and as such, C legg sets out with a variety of steps aimed at attaining the sober state. His basic step towards

Do Structure Matter Research Paper Example | Topics and Well Written Essays - 750 words

Do Structure Matter - Research Paper Example In the New Yorker magazine, the designer shared the readers’ position to understand the much-needed topical matters. Additionally, the New Yorker designers attain customers’ attention by using letters and words that enhance connection, employing the use of challenging language and unbelievable revelations and statements that attract readers’ attention. The designer here therefore steps into the shoes of New Yorker Magazine readers to enable bring out their specific needs that would attract and retain their attention to the content of the magazine. The large bold typeface used help communicate the significance of a heading therefore improving readers attention. The different segments running at the top parts communicate the relevance of each topic covered from books, fiction, daily comments among other headings in bold typeface. The magazine avoids excess use of decorative typeface. However much these have a potential of attracting customers, they may make the magazine hard to read through. This would then push readers to other easier, words, and letterforms in the magazine. This little use of decoration improves readers’ attention and retains their concentration to the contents they read (Jessica & Carolyn, 2007). New Yorker magazine achieve tone and texture in its design through integrating lines of type, words and letterforms. Additionally, it makes good use of weight, line spacing, letter spacing and typeface to attain readers’ attention to the content of the magazine. These design quality enhances brightness and density of type that moderates tone and texture in the magazine. Tone and textures determine an order in which readers go through a text. Putting the main topic in bold and coloring of parts of the text makes them more attractive and appealing to readers irrespective of their relevance (Knight & Glaser, 2013). The magazine uses multiple fonts that prove

Global study-xxx Essay Example | Topics and Well Written Essays - 1000 words

Global study-xxx - Essay Example Overall, the issue is really complicated because on the one hand the Confederate flag is the part of the American history, and one the other hand it is not correct to have it on the Capitol due to the latest events. This debate being one of the pages of American history is greatly influenced by western imperial and colonial legacies. In fact, the legacy of western imperialism and colonialism is felt in many of today’s conflicts in regard to ethnic or religious questions, and the issue of the Confederate flag is one of them. The roots of this conflict go deep in history up to the times of slavery, and this is here that western imperialism and colonialism enter the problem. The matter is that the notion of racism, which gave birth to the current debate as well as numerous hate crimes and other issues similar to them, originates from western imperialism and colonialism, and mostly from westerner’s desire to expand the territories they had and to exploit free labor of slaves. In fact, the main reason why the notion of racism does take place in modern America is that it is imperialism and colonialism that set the boundaries between races and established the idea of differences between races and of submission of one race to another. Therefore, it is possible to say that western imperialism has given rise to animosity between people, which resulted in racism and, consequently, the issue under consideration as well. In addition to this, as it follows from Peter Frankopan’s article Go East, Young Knight, western imperialism is seen in the tendency of shifting focus when it comes to historical events. In particular, it appears that very often history is written in the way particular personalities want it to be. This is why the Confederate flag is the issue of discussion which needs clarification as there is no agreement on its meaning and role because of the differences in points of

Ethical Challenges Essay Example for Free

Ethical Challenges Essay When meeting clients at community and social events the issue of confidentiality and privacy arises. And I agree with Stacey Mason that personal and professional boundaries should not be blurred meaning that clients should not try to consider social event as an excellent opportunity to talk to counselor about certain disturbances. I think confidentiality won’t be broken if relations between the counselor and client remain professional and defined. Of course, some clients may think counselor may share discussed information with the audience, but professional counselor will never use shared information as advantage over the person. I agree that the principles of beneficence and confidentiality should not be violated in any case. In situations, when client is viewed as danger to counselor, the last should take preventive measures either reporting police or informing the relatives. Thus, I agree with Stacey mason that the only case when the principle of confidentiality may be violated is when it is necessary to prevent a suicide attempt. I think that Meagan Bowser’s position on key ethical challenges is valid as well. There are clients who don’t want others to not about their visits to counselors, and, in such situation, counselor is recommended no to approach the client until the client says something to the counselor showing willingness to communication in informal environment. Of course, the counselor should not talk about treatment, counseling or other related issues. I think that counselors should always think of client’s privacy and confidentiality. I see the second situation is more confused and perplexing and professional counselor has to reassure the client that his confidentiality won’t be violated as, there are cases, when under severe stress students attempt to commit a suicide. I agree with the idea that the key responsibility of the counselor is to persuade the girl to tell parents about her problems, not to tell parents himself. Only professional counselors are able to process student’s emotions and direct them in the beneficial way.

Ethics in Human Resource Management

Ethics in Human Resource Management This report mainly focuses on providing a critical analysis of ethics and HRM. It further shows the issues to be considered to ensure fairness and justice in the employment relationship. It examines that how changes in the nature of the work are causing illness. The focal point of this report is to examine the real causes of stress and illness in the workplace and evaluation of their solutions. Through entire study and findings, it is concluded that although the changes in the nature of work cause stress and illness, still these can be eradicated by adopting appropriate measures like good management style, training, mentoring, health and safety measures, planning and time management. Introduction Human Resource Management is the systematic and effective management of people to achieve the desired objectives. To gain a strategic edge, it is very important to manage the people resources productively. This will help to attain the strategic goals as well as the satisfaction of the individual employee needs. All the Human Resource practices are based on ethical foundation. It is the responsibility of the employers to maintain health and safety of their employers in the workplace. The main objective of this report is to provide a critical analysis of ethics and HRM and examine the real causes of illness in the workplace and evaluate their solutions. This report helps in undertaking a search in analyzing the ethics to be used in HRM for ensuring employee health and safety. Thus, it mainly focuses on finding the causes that increase illness in the workplace and it proposes various ways to eradicate illness. Moreover, workplaces culture should be developed in such a way that it should allow flexibility, security, autonomy, recognition, participation and involvement to employees in order to create a stress free atmosphere. Ethics and HRM According to Winstanley, Woodall and Heery (1996), Ethics is a special branch of philosophy that focuses on the questions related to morality, that is concepts such as good and bad, right and wrong ; fairness and righteousness. Business ethics deals with the degree and extent of morality to be used in business (George Zoe, 2010). Morals, standards, values and ethics have becoming more complex in the present modern society and the concept of absolutes is taken away by ambiguity. As per Pitt (2007), Human Relations Management is concerned with a variety of ethical issues to be dealt with for making decisions related to businesses. Before making the decisions, the various alternatives catering to the needs of the business must be checked and their effects on the lives of the employees must be considered. Nowadays the relationship between ethics and HRM is becoming a major issue to be taken care of. A significant turning point has been experienced by ethics and Human Resource Management . The business ethics mainly put attention on the social and ecological responsibilities of the companies within the society. Ethics are now becoming one of the most important internal concerns for the companies. Previously, the interests of the employees were not taken into consideration but now it has become one of the main responsibilities of the company to ethically manage its human resources (Christian Andra, 2009). Now its the era of ethical leadership. Acts of its employees towards a business perspective to his moral character is a litmus test.  Relationship between business and its employees is based on employment contract. The principle of ethical selection is followed by an ethical organization for hiring prospective employees. As per this principle an organization should only hire a person who is expected to contribute the maximum towards increasing the long-term value of the business (Glenn, 2001). According to this principle, factors like gender, age, nationality a nd religion are not relevant for hiring a person. The ethical issues which are reflected in the case are: Safety and health: Much of the work in the industries and companies is hazardous. All this is because of the use of heavy technology. Nowadays there is much use of machineries and high temperature based production processes. In addition, there is more dependence on chemical compounds. All these aspects increase injuries, illnesses and accidents in the workplace. For instance, the job of a bullfighter or bomb disposal expert (De Cieri Kramar, 2008). New sources of accidents and illnesses are increasing day by day. Risk is present in every job but its frequency differs from job to job. Face to face ethics: These types of ethics arise due to human element in the activities in the workplace. No work is possible without employees. Corporate policy ethics: The use of more technology in the workplace has replaced the labor in the workplace. This has made hundreds of persons jobless. The managers are responsible for making policies and their successful implementation. The ethical content of these policies has massive impact throughout the company. It should be such that it can be able to send right signals to every person in the company (Shuttleworth, 2004). Employee Relations: Its the duty of the HR manager to maintain objectivity in hiring, discipline, promotion, training, retention, termination and compensation (Ken Joanne, 2010). All this lies at the core of human resources. HR should make it sure that the company policies should follow anti-discrimination legislature and polices of the integrity of performance reviews to make sure that the evaluation process remains fair with all the jobs (Ken Joanne, 2010). Communication: Another duty of the HR Department is to keep informed everyone in the organization on relating to the various legal and ethical issues. HR prepares various communication vehicles to advise employees of the companys code of ethics and no-tolerance policies such as documents, seminars, and informal meetings (Hughes Bozionelos, 2007). Increase in competition, locally or globally, need that organizations should be more adaptable, flexible, agile, and customer focused to succeed (Markiewicz, 2007).  And with this change in the environment the human resource professional needs to be a strategic partner, an employee sponsor or advocate and moreover, a change mentor within the organization. Grove (2009) suggests that in order to succeed a business driven HR function with a thorough understanding of the organizations big picture may be more important to be able to influence decisions and policies.  In general, todays human resource managers focus is on strategic personnel retention and developing talent (Teasdale, 2006).  A recent study (Grove 2009) found that human resource professionals, coaches, counselors, mentors, and succession planners will help to motivate organizations members and their loyalty.  Human Resources Manager will also promote and fight for values, ethics, beliefs, and spirituality within their organizations in the management of workplace diversity, specifically. Insecurity and risk: Another ethical issue that is depicted in the case is insecurity and risk present in the job. This has arisen because of the changes in the macro-economic environment and mass un-employment (Makin Winder, 2009). All this happens because of business restructuring and stripping out of the costs due to redundancy, outsourcing, contingent contracts and systems of rewards in the employment (Grawitch, Trares Kohler, 2007).   Another problematic element of the shift to greater risk and insecurity for workers is that what is happening when other stakeholders have to act on the same insulation from risk (Rodney, Matrina Anne, 2008). Undoubtedly, a key element of economic life in recent years has been a transfer of risk from those who finance business i.e. banks, institutional investors, shareholders, taxpayers and the Treasury to those in gainful employment (Teasdale, 2006).  The moral question here is whether this shift is fair, or compatible with the ru les of distributive justice.  It could be suggested that the transfer is unfair because the investors are in a stronger position to risk-sharing by employees and that this has happened, crudely, it is the exploitation of the change in the bargaining power by the strongest party in industrial relations (Teasdale, 2006). Surveillance and control: It is major ethical concern these days. The right of the employing agency to enter into the subjectivity of the worker to control and manipulate, is taken for guaranteed (Pitt, 2007).  Whether the use of psychometric tests for selection or promotion of employees, culture change programs that seek to challenge assumptions on the job or competence-based HRM, which seeks to promote compliance  with attitudes and behavior, the assumption is that it is lawful for the employer to trespass on workers autonomy.  Such misconduct will never be complete, but the trend for a large complex HRM is to invade privacy of employees. While new forms of work organization can be effective in increasing productivity, but possible adverse effects on the welfare of workers should be considered when evaluating these initiatives (Christian Andra, 2009). A wide range of human relations management activities is concerned with various ethical issues, both on the part of upper-level for management of business and management decisions of low-level regarding treatment of the individual employees (Winstanley, Woodall Heery, 1996).   This can be devastating to individual employees and the communities in which they live.  Managing decisions must be honestly done by taking into account all the factors, including social responsibility as well as stockholder concerns.   HR manager should consider various options for business needs and take the decision that is best for company and employees as well as it will have an impact on employees live.    Issues involved in considering rights, responsibilities, fairness and justice in the employment relationship: There are many issues which are needed to be considered to have good and faithful employment relationship as it has impact on the whole society and economy as a whole. Good Faith: There should be positive relationship between employer and employee. Good faith means to deal with honestly, openly and without misleading each other. It also requires parties to actively and constructively creating and maintaining a productive relationship (Glenn Klaas, 2001).  Such behavior makes sense. Workers with positive relationships are more likely to enjoy the benefits of sustainable, decent work.  Employers also benefit productive employee. On the other hand, an employment relationship may be affected if it is based on distrust and there is doubt or lack of communication. Workplace health and safety: The purpose of workplace health and safety is to protect the health and safety of health and safety of all in a workplace (Markiewicz, 2007). Grawitch, Trares and Kohler state that Effective management of health and safety in the workplace is not only good business, but it is a requirement under the law. Employers have an obligation to ensure that the way in which business is conducted has no adverse effects on health and safety of themselves, their workers or anyone who enters the workplace. The occupational health and safety plan need not be complicated.  It should be simple, practical and easy to implement.  As a result of the implementation of health and safety of the business processes can also benefit from significant productivity gains and cost savings (Makin Winder, 2009). Occupational health and safety is a discipline with broad scope, with many niche areas.  In its broadest sense, it is diverted towards promoting and maintaining the highest degree of physical, mental and social well-being of workers in all occupations; preventing workers from the adverse health effects caused by their working conditions; protection of workers in their employment from risks resulting from factors adverse to health (George Zoe, 2010). In other words, the occupational safety and health include social, mental and physical well-being of workers, which is the whole person. On the other hand, poor working conditions can also affect workers living environment.  This means that occupational hazards can have harmful effects on workers, their families and others in the community and the natural environment around the workplace.  It has been estimated that the indirect costs of an accident or illness can be four to ten times greater than direct costs, or ev en more. Occupational disease or accident can have so many indirect costs for employees that are often difficult to measure them.  One of the most obvious indirect costs is the human misery caused to families of workers, which cannot be compensated with money (Ken Joanne, 2010). Management Commitment: Strong management commitment and involvement of employees are necessary for a successful health and workplace safety program.Effective management addresses all work-related risks, not just those covered by the standards of government, and communicate with employees (Rodney, Matrina Anne, 2008). Workers in every profession can be faced with a multitude of risks in the workplace.  Business addresses health and safety in a wide range of risks in the workplace accident prevention in the most insidious dangers, including toxic fumes, dust, noise, heat, stress, etc. The prevention of occupational diseases and accidents should  be the goal of occupational safety and health programs instead of trying to solve the problems after they have already developed (Teasdale, 2006). Changes in the nature of work: There has been a dramatic change and growth in the workplaces. The workplaces have gone through a remarkable revolution over the last two decades as a result of globalization, democratization and innovations i.e. both technical and creative. The swift growth has brought momentous changes in the structure of the labor market and in the organization of the work resulting in changes both within and outside the framework of the employment relationship. The type of employments has been changed now. Workers are now more engaged and employed in atypical, conditional and contingent employment relationships like casual employment, use of contract work, and the rise of the use of vague and disguised employment (Hughes Bozionelos, 2007). The work environment is now changing fastly. The employment is now becoming unstable, less secure and more concentrated. The trend of the collective bargaining has now been shifted towards individual negotiations (Shuttleworth, 2004). All these factors are res ulting causing the employee to be sick as a result of more work pressure, less secured job and more responsibilities. The trend is shifting towards privatization and the seniors who are more experienced are being replaced by the freshers or the younger graduates who are less experienced and they are more often engaged in the employment that is non-permanent ( Markiewicz, 2007). In the real terms, the average rate of the pay is also decreasing, or its standing still from the last five years (Markiewicz, 2007). For instance, in the media industry, all these changes have resulted in having a negative effect on the editorial contents quality and as its consequence it is jeopardizing the role of the media as a watchdog for the society and it ultimately puts effects on the mental health of the employees as well (George Zoe, 2010). Moreover, more layoffs, longer working hours are there. There is lack of physical activities and poor seating as well. These factors are the biggest sources of stress. Real causes of illness in the workplace and evaluation of their solutions: There are many real causes of illness of workers in the workplace. Some of them can be: Workload: The very first cause of illness in the workplace can be the increasing workload on the part of employees. It is causing stress. Employees are often found in stress when the workload is too high or too less. Its the responsibility of the manager to divide the work properly among employees based on the priorities (Makin Winder, 2009). Targets should be challenging but should be kept realistic. Before making a shift in the responsibilities, its impact should be known in advance. Furthermore, the cost resulting from the stress must be taken into consideration (Teasdale, 2006). More care to be taken when increasing the workload of any worker or when there is a need to hire more people. Moreover, there should be a balanced workload with control over the tasks to be performed. Persuasive uncertainty: When the workers are confronted by new rules, requirements and the procedures, there will be an increase in the level of illness. Its the duty of the manager to check whats going on at regular intervals and convey each piece of information to the staff (Grawitch, Trares Kohler, 2007). In this way, stress can be controlled and this will ultimately result in increasing the productivity. In some companies, the manager writes out the new information in a memo so that it can be conveyed to the employees and the facts can be reviewed (Grove, 2009). Moreover, information given in this way is appreciated by the staff members. This will help in reducing mental illness. Mistrust and unfairness: Mistrust and unfairness can also be the cause of illness in the workplace. These will keep everyone in the workplace on the edge, create bad attitudes, and will decrease productivity (Pitt, 2007). Misunderstanding can be avoided through an open line of communication and by knowing what and how the staff members are thinking about the decisions. Its managers duty to consistently build trust and treat everyone equally. This helps in reducing illness in the workplace. Lack of control: The employees should be given an opportunity to say regarding the things those affect them as if they have no say, and then there will be more chances of workplace illness. All the employees should be given a sense of being in control. The managers should involve employees in both operating as well as administrative decisions. And the frontline employees must know what they are talking about. All this will result in increasing productivity and reducing the stress levels. The managers who are efficient and effective understand that controlling stress and illness are leadership responsibilities and these are as important as any other management functions (Glenn Klaas, 2001). Lack of communication: When the communication system is not good, this will result in lack of understanding, bad performance and less productivity with stress (Rodney, Matrina Anne, 2008). The communication system should be two way so that the employees can be able to receive full information and give suggestions and in this way, there will be no stress. No appreciation: Lack of appreciation will also lead towards illness in the workplace. If the employees do not get feedback on what they are doing, not being appreciated for good performance, they will feel mentally stressed and this can be one of the causes of illness (George Zoe, 2010). To overcome this, the managers should appreciate the good work from time to time. This will create a feeling among the employees that are valuable for the company and they will feel happy and stress free. Poor relationships: Poor relationships with colleagues can also be the factor of illness. If the employees are treated with discrimination then there can be chances of stress. Unclear policies and no sense of direction: If the policies are not clear to the employees and they are not in the written form, then these can cause stress among employees. The policies should be enforced properly and communicated in a clear way. The policies can be reinforced in a number of ways from time to time like memos, personal meetings, bulletin boards, articles, small group discussions, etc. the employees should be informed about the business direction and the significant changes (Grawitch, Trares Kohler, 2007). Contributory factors with regard to sickness: There are many factors causing sickness among the people. The reasons can be tiredness or unappreciation or they can have the travel difficulties. For instance, a person who is suffering from diarrhea or dysuria is very unlikely to come to work from home if he has to drive for 50 miles to get there, whereas another person who is working from home or working in an office which is close to toilet may continue the work for long (Hughes Bozionelos, 2007). Moreover, the workers who are positively motivated they can simply take easy and simple remedies. If there is a bullying environment in the workplace or the manager is over-enthusiastic, then taking sick leave for a minor illness thinking that the power balance has become unequal in the favor of manager? Other sources of workplace illness can be layoffs, absenteeism, alcoholism, lack of motivation, bad decisions, petty internal policies, harassment, lack of equipment, lack of autonomy, etc. Ways to reduce illness in the workplace: Preparing Education Programs: To overcome illness, the employees should be educated about the causes, symptoms and treatment and it should be ensured that all the individuals should have early treatment. Employers can provide assistance by ensuring that every person in the organization from the top down has received full information about all the issues related to mental health and illness (Christian Andra, 2009). Stress management training and counseling services should be implemented in the workplace to eradicate stress. This will help the employees in better management of work during pressure. This will help them to learn techniques like time management, leadership skills, assertiveness, relaxation, etc. The employee must learn how to relax in case of stress. Mentoring: Mentoring can also be very helpful to reduce stress and illness in the workplace. This will help to create strong bonds among colleagues and they can share their work related skills (Ken Joanne, 2010). This can help to create awareness among employees related to the diversity which is very helpful to reduce stress. This will make the employees more confident as they can get to know more things which they previously dont know. Moreover, it will promote team spirit. Encourage exercise: Another way to keep employees healthy and fit is to encourage exercise. Employers should encourage their employees to keep physically fit. Doing exercise and taking a healthy and balanced diet will help employees to have more stamina and energy in the office (Markiewicz, 2007). Exercises can be of various types. For instance, tennis, ballroom dancing, swimming, jogging, cycling, etc. All these will not only promote fitness but also help to get relief from counter stress. The workplace should be clean for the wellbeing of the employees and the overall mental attitude of the employees. The employees should talk with each other so that they can discuss their problems and can reduce stress. Duties of employers towards employees: To reduce stress and illness, it is the duty of the employer to treat each employee equally. Each and every employee should be involved in decision making so that they can feel that they are part of the organization (Grawitch, Trares Kohler, 2007). Each employee should be well trained. The managers need to behave proactively to handle stress. They should be able to understand the signs and symptoms of stress. Employers should provide proper health and wellness programs to reduce stress in the workplace and to ensure health and safety. There should be no bullying and harassment in the workplace. Workplace culture: The organizations need to set proper organization culture to reduce levels of stress in the workplace. Workplaces culture should be developed in such a way that it should be allow flexibility, security, autonomy, recognition, participation, involvement, etc (Teasdale, 2006). All these factors are very important for a stable workplace and industrial relations. Consequently, there will be more employee satisfaction with more productivity. Management style: Management style plays a vital role in ensuring good work environment. The management style should be such that gives encouragement to employees so that they can discuss problems with the managers freely. They should be provided with regular feedbacks and should be given freedom to express their ideas (Rodney, Matrina Anne, 2008). Planning and time management: Stress and illnesses can also arise from lack of proper planning. To get relief from stress, the employees should make a proper planning so that they can make work life balance (Hughes Bozionelos, 2007). In-depth training for managers: Further in-depth training for managers is essential.  The  managerial role may be one of the most stressful jobs within an organization.  Managers are often exposed to many competing pressures and demands.  Ãƒâ€šÃ‚  Managers who are skilled in managing the pressure not only are more effective role models, but also better able to recognize common signs and symptoms stress-related psychological disorders, to make confident risk assessment of staff and providing appropriate support (Glenn Klaas, 2001).   Conclusion Eventually, ethics play a vital role in HRM. The management should consider ethical issues relating to health and safety of employees. There has been a vivid change and growth in the workplaces. The changes in the workplace are causing the employee to be sick as a result of more work pressure, less secured job and more responsibilities. Lack of communication, more workload, lack of appreciation, lack of autonomy are the another biggest sources of stress. Companies are dealing with these sources to eliminate stress in a prudent way but still there is need for more improvements. Employers should provide proper health and wellness programs so that they could reduce stress in the workplace and to ensure health and safety and moreover, a good communication with their employees in order to have deep understanding with each other. Consequently, there will be more employee satisfaction with more productivity. Recommendations Through entire study and findings, the following recommendations are made: There should be a balanced workload with control over the tasks to be performed. Employers should provide proper health and wellness programs to reduce stress in the workplace and to ensure health and safety. There should be no bullying and harassment in the workplace. Stress management training and counseling services should be implemented in the workplace to eradicate stress. The employees should talk with each other so that they can discuss their problems and can reduce stress. The employees should be provided with regular feedbacks and should be given freedom to express their ideas. There should be flexibility, security, autonomy, participation and involvement in the organizations culture.