Shape Memory Alloys Manufacturing Processes

Shape Memory Alloys Manufacturing Processes Smart materials have been one of the fastest growing materials needed for medical device manufacturing. Smart materials, according to the McGraw-Hill Dictionary of Scientific Technical Terms, are defined as Materials that can significantly change their mechanical properties (such as shape, stiffness, and viscosity), or their thermal, optical, or electromagnetic properties, in a predictable or controllable manner in response to their environment. It is this property of changing according to its material that makes smart materials very valuable in manufacturing today. Perhaps one of the most useful smart materials comes in the form of memory shape alloys, specifically nitinol. Memory shape alloys have many applications in medical devices used today. They are highly prized for their exceptional superelasticity, their shape memory, their good resistance to fatigue and wear, and their relatively good biocompatibility. This makes them the perfect candidate for many in-vivo medical devices . Origin The shape-memory effect was first observed in copper-zinc and copper-tin alloys by Greninger and Mooradian in 1938, but it was only in the early 1960s that Buehler and his colleagues discovered and patented nitinol, a nickel-titanium alloy created in the Naval Ordnance Laboratory (NOL). This lab was formerly located in White Oak, Maryland and was the site of considerable work that has had useful impact upon world technology. The White Oak site of NOL has now been taken over by the Food and Drug Administration but has still left its legacy in the name nitinol (nickel + titanium + NOL- the initials of the Naval Ordinance Laboratory) (Gautam, et al. 2008). Their smart metal alloy, however, is 55% nickel by weight and may thus have allergic, toxic, or carcinogenic effects. For short-term use, in-vitro and clinical data strongly support nitinol as a safe biomaterial which is at least as good as stainless steel or titanium alloys also available to designers. Medical Applications of Shape Memory Alloys Muscles are the power of the body, used to turn energy into movement and motion. Shape memory alloys can be used to in their solid-state phase to make devices from muscle wires. Applications of shape memory alloys in the medical field are numerous. Their flexibility at one temperature and one way shape memory effect when heated to their transformation temperature make these alloys key materials for various medical methods. The inability of shape memory materials to combine to other metals requires some adaptation to be developed. A common material for this is nickel-titanium. Nickel-titanium has an excellent torque transfer characteristic which is just one of the many reasons this material is used for fabricating medical equipment (Yoshida, et al. 2010). A few notable applications are catheters, medical guide wires, bone plates and stents. Bone plates comprised of shape memory alloys, assist in repairing broken bones by making use of the bodys natural temperature to contract and maintain pressure for proper healing. (Georgia Inst. Of Tech, 2007) Catheters Catheters are used in a number of procedures such as therapeutics, diagnostics, and ablative procedures. Used in the medical field for administration of fluids, drainage, and provide a method to insert surgical instruments, catheters are tubes that can be placed in a body cavity, vessel, or duct. In the case of blood vessels, the catheter must move around the bends and angles to reach the desired destination. Stiff materials would not be flexible enough for this procedure and may cause a rupture in the vessel. Due to heat restrictions and risk of damage, only specific shape memory alloys can be used for many of these delicate processes. A solution for this problem is provided by the R-phase transformation, which is a specific type of martensite transformation that occurs in certain nickel-rich Ni-Ti alloys (Langelaar, et al. 2010). Travelling through the vessels is a difficult task, so a steering mechanism is implemented into a catheter to maneuver throughout the body. Currently catheters are equipped with integrated micro-actuators that allow controlled bending, which yields enhanced maneuverability compared to conventional catheters. Actuators consist of guide wires that bend when energy runs through them such as an electric current that heat the shape memory material. The simplistic designs of the actuator allows for high strains and stresses needed for a process. There are few actuating mechanisms which produce more useful work per unit volume than nitinol (Williams, et al. 1999). Guiding wires also known as pull wires or shaping wires, are located along the tube to allow for motion in many directions. Above: This demonstrates that shape memory alloys are more effective in actuators than many of the current materials on the market. Guide wires provide flexibility, shape memory, and pseudoelasticity. When a greater stiffness is required, the thickness of the wire may be increased to meet performance standards. Shape memory alloys allow for the catheter to return to its original geometry when the tension in the wire is removed. One adaptation formed due to the lack of metallurgical joining is a stainless steel sleeve, known as a crimp sleeve, to hold the wires to the catheter (Stoeckel, 2010). The sleeve brings up the problem of increasing the diameter of the catheter. To prevent breakage in a material, more flexibility and ductility is ideal. In medical applications, nitinol has higher ductility allowing more plastic deformation without fracturing due to the temperature of the human body. At body temperature (310K), nitinol will have a high percentage of strain at low stress meaning more ductility. Stents One of the largest medical uses for shape memory alloys is in stents. A stent is a tube that is inserted into an artery to hold it open. Stents are needed when the walls of the artery are not strong enough to remain open and need support to ensure that blood is able to flow. The stent is put in place during a procedure called an angioplasty (Stent Facts, 2010). In order to get the stent into the artery, it needs to be collapsed and inserted into a catheter. Shape memory alloys allow doctors to collapse the stent to a much smaller diameter, and have it return to its original shape after leaving the catheter inside the artery. The original use of shape memory alloys in stents was in the form of a simple coil. The coil was tightly wound in the catheter and then expanded once it was inserted into the artery and warmed. The expanded size of the coil is chosen to be slightly larger than the inner diameter of the target vessel, which means the coil will not be able to fully expand inside th e artery. The shape memory alloy, in its warmed state, will continue to attempt to expand, which will put a continuous outward pressure on the walls of the artery. This will ensure that the artery remains open. In more recent times, simple coil stents are used more for non-vascular applications such as preventing bladder obstruction. The simple coil stents that are still in use today are used in vascular cases where easy retrieval is required. The shape memory alloy allows the stent to hold its form in the body, but still be easy to deform back to a straight wire for removal (Sutou, et al. 2006). More modern shape memory alloy stents are made in forms other than a coil. The shape memory alloy can be formed into a braided or knitted coil. The downside of this is that the points where the wires cross form thicker walls, which are undesirable in a stent. Although the braided and knitted shape memory alloy stents were a step up in functionality from the simple coils, the thicker walls made them undesirable for many cases. The next level of shape memory alloy stents occurred once scientists determined how to make the alloys in flat sheets rather than just wire. Laser cutting a pattern into a flat sheet of the alloy, then rolling and welding it at various points creates a stent with no overlapping wires at the walls. Sheet style stents are thin, but also structurally supportive when heated to body temperature. This gives them more flexibility than the simple coil models and is a better use of the shape memory alloys characteristics (Sutou, et al. 2006). An older style coil stent in both its compressed and expanded forms Examples of sheet style stents: Top- Jostent SelfX (made by Jomed), Bottom- Dynalink (made by Guidant) Examples of braided style stents: Left- ZA Stent (made by Cook), Right- Symphony Stent (made by Boston Scientific) General Hazards General hazards of inhaling Nitinol include irritation, coughing, and shortness of breath. If ingested gastrointestinal disorders are possible. Skin contact and eye contact include irritation with possible redness and pain. None of these side effects are chronic. (SMDS 2008) Complications of Nickel-Titanium in Medical Applications Of the wide range of alloys that contain the properties of shape memory alloys, nickel-titanium and copper-based alloys hold the most value commercially. Nickel-titanium, also known as nitinol, is an equi-atomic mixture of the two metals. Concerns have risen over this alloy for the fear of nickel being released into the body (Williams, et al. 1999). It is important in medical equipment for the materials to be biocompatible, or the ability of the material to perform with a necessary response. In most medical procedures no response is typically desired. To determine if nitinol meets these criteria, the properties of titanium, nickel, and the combination of the two can be looked at. Titanium is a metal with a high resistance to corrosion. It is not particularly reactive and therefore is effective for medical uses where the device needs to be in the human body for an extended period of time (Lagoudas, 2010). It contains no characteristics of toxicity. Titanium is also a very strong material, however it is rarer and more difficult to manufacture than other materials. This makes titanium expensive compared to other alternatives. Nickel is a metal which is extremely reactive. Nickel is toxic to the human body and may cause massive inflammation and interaction with proteins. These properties raise questions on whether nitinol alloy is safe for medical uses. The benefits of using nickel in medical devices is that nickel increases flexibility and lowers the expense when alloyed with more expensive materials such as titanium (Langelaar, et. al. 2010 ). The properties when nickel and titanium are alloyed together usually take on those of titanium. During the manufacturing process an outer layer of titanium oxide forms. Although some nickel will still exist on the exterior, the toxicity is greatly reduced. When choosing a material for medical instruments, a risk/benefit analysis controls which alloy will be used. Nitinol is chosen because it holds great benefits and is very safe to use. Extensive testing of this material has been done and is still occurring to limit complications (Yoshida, et al. 2010). Safety During Medical Application When considering the use of shape memory alloys (such as nitinol), in medical applications, it becomes necessary to evaluate the safety of the materials for use in the human body. Biocompatibility and corrosion are two factors that come into play when considering placement into humans. Properly treated nitinol implants are corrosion resistant and compatible in humans. These implants form a surface oxide layer that protects the base material from most corrosion. There are some concerns of the nickel content dissolving from the Nitinol and causing adverse affects. However, other alloys containing high levels of nickel, such as MP35N or 300 series stainless steel, have been used in orthodontics, orthopedics, and cardiovascular applications, all the while displaying good biocompatibility. (Stoeckel, et al. 2003) Studies have shown that in vitro dissolution of nitinol dental archwires in saliva released an average of 13.05 mg/day nickel. This number is significantly lower than the average dietary intake of 200-300 mg/day. There was no increase in the nickel blood level throughout the study. A comparative in vitro cell culture study was performed to measure nickel release from nitinol and 316L stainless steel in fibroblast and osteoblast cell culture media. The nickel content was higher in the nitinol group for the first day, but rapidly decreased over time to achieve similar levels as the stainless steel. The nickel content never reached toxic levels in the nitinol and did not interfere with the cell growth. It was found that samples prepared by mechanical polishing released higher amounts of Ni-ions than those prepared by electropolishing. In order to evaluate the effect of polishing on nickel release, mechanically polished and electropolished samples of nitinol, MP35N, and 316L stainless st eel were immersed in solution for a period of over 1000 hours. Samples prepared by electropolishing released smaller amounts of Ni-ions than those with mechanical polishing. The electropolishing process removes excess nickel from the surface and forms an enriched layer of titanium. (Stoechel, et al. 2003) A study on blood compatibility was conducted on nitinol and stainless steel stents using an ex vivo, AV-shunt porcine model. It was concluded that nitinol is significantly less thrombogenic than stainless steel, meaning that when used in the human body it has a much lower chance of causing blood clots. It is thought that the titanium-oxide rich surface layer on the nitinol prevents denaturation of fibrinogen and minimizes platelet-rich thrombus formation within the stent after implantation. (Thierry, et al. 2000) Comparison of Shape Memory Alloy Nickel-Titanium to Stainless Steel The ability of shape memory alloys to return to their original position after large strains are induced is similar to that of rubber. However, unlike rubber, shape memory alloys are strong and noncorrosive much like stainless steel. Both nickel-titanium and stainless steel have long fatigue life. Many stainless steels contain nickel to maintain an austenitic structure. Higher nickel content guarantees superior resistance to corrosive cracking. Stainless steel has a relatively lower cost compared to nitinol mainly due to larger production numbers. Only about two hundred tons were produced in 1998 compared to a few hundred thousand tons of stainless steel (Lagoudas, 2010). Alloying a metal raises the production expenditure but changes the tensile and shear strength of the initial metals. The properties of shape memory alloys are better than those of stainless steel and therefore are the chosen material for certain applications. Above: Shape memory alloys have two phases, each with a different crystal structure and  properties. One is the high temperature phase, called austenite, and the other is the low temperature phase, martensite. Each martensitic crystal formed can have a different orientation direction, called a variant. The assembly of martensitic variants can exist in two forms. Twinned martensite, which is formed by a combination of self-accommodated martensitic variants and detwinned or reoriented martensite in which a specific variant is dominant (Lagoudas, 2010). Costs of Shape Memory Alloys such as Nickel-Titanium Alloys such as nitinol have poor formability in the manufacturing process which increases the production costs of such materials. The complex behavior of the material makes the development of shape memory alloys adaptive structures a challenging task. In this case, it is generally accepted that systematic, model-based design approaches and design optimization techniques can be of great assistance (Langelaar et al. 2010). However, as more applications for these materials are needed, the price will decrease. Currently, shape memory alloys are commercially available from a limited number of producers. When more production of these alloys begins, production costs will reduce. World production is small in contrast to other metal commodities. Competition drives prices lower in a market. Newer technology in manufacturing will also make the production more effective. Prices for shape memory alloys were over one dollar per gram of material in the 1990s. Today, the costs are roughly ninety percent lower. Whatever the cost may be, shape memory alloys such as nickel-titanium are one of the only materials capable of such miniscule instrumentation with the desired properties. Shape memory alloys are effective for their cost due to reliability and multiple functions (Stoeckel, 2010). Many applications of shape memory alloys only require a small amount of material. With prices around that of similar steels, shape memory alloys are gaining more attention in a variety of applications. Above: The best material lies towards the upper left corner as it corresponds to low material cost  for the same output work (Lagoudas, 2010). It indicates that CuZnAl is the best, while Ni-Ti is the least. However, it may be more advantageous to use Ni-Ti because of reduced voltage requirements due to much higher resistivity, which results in cheaper equipment in cyclic applications. Copper based alloys are less stable and more brittle than Ni-Ti. Although less expensive, copper based alloys have found little approval for applications. Future Trends Current studies at the University of OULU have been conducted in order to demonstrate that bone modeling can be controlled by using a functional implant such as a NiTi nail which can be used to bend a normal shaft of the long bone. The method could also be applied inversely, such as straightening a deformed bone. Fractures and especially frequent fractures lead to angular deformity and bowing of long bones. Operative treatment has usually consisted of cortical osteotomies with cast, internal fixation, or external fixation (Kujala, 2003). However, these are relatively large operations with much postoperative pain and a risk for complications. Implantation of a bending rod would be a much smaller operation for the patient with reduced postoperative recovery. It might even be possible to insert the nails using minimally invasive techniques which would require a minute incision. Thus, the functional nail presented might provide an easier, quicker, cheaper, and less painful way to correct such bone deformities in the future. In addition, Prototype piping in nuclear reactors has been wound with pre-stretched Ni-Ti wire, which leaves very high compressive stresses in the pipe. Tennis racket strings have been tested in China and the USA with both countries claiming performance superior to existing string materials (Deurig, 1995). Furthermore, a variety of damping applications are being examined including such motivated projects as railroad wheel tires and damping mechanisms for suspension bridges. Moreover, the maximum Ms temperature achieved in Ni-Ti binary alloys is 100 degrees Celsius and for several years scientists have searched extensively for ways to increase this. Ms temperature or Martensite start temperature is the temperature at which the transformation from austenite to martensite begins on cooling. Until just two years ago the only alloys showing hope were extremely expensive alloys such as Ti- Pd-Ni and Ti-Pt-Ni. Recently, however two new alloys are showing a great deal of promise, Ni-Ti-Hf and Ni-Ti-Zr31. These alloys prove that transformation temperatures of over 300 degrees C are possible (Deurig, 1995). However, it is too early to know what the cost of the alloys will be and if other properties will be as good as the original alloys. Luckily, these first indications seem positive. One advantage if such an Ms temperature is possible would include the use of nitinol in circuit breakers and in automotive applications. Conclusion Shape memory alloys are quickly becoming a common material used in medical applications today. The adverse uses of alloys, such as nitinol, allow for improved stents, catheters, bone plates, medical procedures, and more. These advanced materials are helping to shape medical technology for the future. Through their durability and unusual prowess for changing shape they have become the future of medical material.

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The Good King of Bechuanaland 1819 to 1923 Khama distinguished his reign by being highly regarded as a peace-loving ruler with the desire and ability to extract technological innovations from Europeans while resisting their attempts to colonize his country. Such advancements included the building of schools, scientific cattle feeding, and the introduction of a mounted police corps which practically eliminated all forms of crime. Respect for Khama was exemplified during a visit with Queen Victoria of England to protest English settlement in Bechuanaland in 1875. The English honored Khama and confirmed his appeal for continued freedom for Bechuanaland. Khama distinguished his reign by being highly regarded as a peace-loving ruler with the desire and ability to extract technological innovations from Europeans while resisting their attempts to colonize his country. Such advancements included the building of schools, scientific cattle feeding, and the introduction of a mounted police corps, which practically eliminated all forms of crime. Respect for Khama was exemplified during a visit with Queen Victoria of England to protest English settlement in Bechuanaland in 1875. The English honored Khama and confirmed his appeal for continued freedom for Bechuanaland. A brief biography of Sir Seretse Khama, Botswana's first president: Seretse Khama (1921-80), founding President of Botswana, 1966-80. He inherited an impoverished and internationally obscure state from British rule, and left an increasingly democratic and prosperous country with a significant role in Southern Africa. Seretse Khama was born on 1 July 1921 at Serowe in the British protectorate of Bechuanaland. He was was the son of Sekgoma Khama, and the grandson of the internationally famous Kgosi Khama III (c.1835-1923), ruler of the Bangwato people of central Botswana. He was named Seretse-the clay that binds together-because of the recent reconciliation between his father and grandfather. Seretse's mother, Tebogo Kebailele, had been chosen by Khama to be the new wife of the ageing Sekgoma. When Sekgoma died in 1925, four-year old Seretse was proclaimed Kgosi. His uncle Tshekedi Khama became regent and later sole guardian for him. The lonely and often sickly child was sent to boarding schools in South Africa, but developed into a healthy and gregarious adolescent sportsman. He attended Fort Hare University College and graduated with a general BA degree in 1944. In August 1945 he was sent to England for a legal education. After a year at Balliol College, Oxford, he enrolled for barrister studies at the Inner Temple, London. In 1947 Seretse Khama met an English woman of his age, Ruth Williams, daughter of a retired army officer. Ready :: essays research papers The Good King of Bechuanaland 1819 to 1923 Khama distinguished his reign by being highly regarded as a peace-loving ruler with the desire and ability to extract technological innovations from Europeans while resisting their attempts to colonize his country. Such advancements included the building of schools, scientific cattle feeding, and the introduction of a mounted police corps which practically eliminated all forms of crime. Respect for Khama was exemplified during a visit with Queen Victoria of England to protest English settlement in Bechuanaland in 1875. The English honored Khama and confirmed his appeal for continued freedom for Bechuanaland. Khama distinguished his reign by being highly regarded as a peace-loving ruler with the desire and ability to extract technological innovations from Europeans while resisting their attempts to colonize his country. Such advancements included the building of schools, scientific cattle feeding, and the introduction of a mounted police corps, which practically eliminated all forms of crime. Respect for Khama was exemplified during a visit with Queen Victoria of England to protest English settlement in Bechuanaland in 1875. The English honored Khama and confirmed his appeal for continued freedom for Bechuanaland. A brief biography of Sir Seretse Khama, Botswana's first president: Seretse Khama (1921-80), founding President of Botswana, 1966-80. He inherited an impoverished and internationally obscure state from British rule, and left an increasingly democratic and prosperous country with a significant role in Southern Africa. Seretse Khama was born on 1 July 1921 at Serowe in the British protectorate of Bechuanaland. He was was the son of Sekgoma Khama, and the grandson of the internationally famous Kgosi Khama III (c.1835-1923), ruler of the Bangwato people of central Botswana. He was named Seretse-the clay that binds together-because of the recent reconciliation between his father and grandfather. Seretse's mother, Tebogo Kebailele, had been chosen by Khama to be the new wife of the ageing Sekgoma. When Sekgoma died in 1925, four-year old Seretse was proclaimed Kgosi. His uncle Tshekedi Khama became regent and later sole guardian for him. The lonely and often sickly child was sent to boarding schools in South Africa, but developed into a healthy and gregarious adolescent sportsman. He attended Fort Hare University College and graduated with a general BA degree in 1944. In August 1945 he was sent to England for a legal education. After a year at Balliol College, Oxford, he enrolled for barrister studies at the Inner Temple, London. In 1947 Seretse Khama met an English woman of his age, Ruth Williams, daughter of a retired army officer.

B122 Tma 1

In 1999 Asda became a subsidiary of the largest retailer in the world, Walmart. Asda operates within the UK grocery market and currently rank second. Asda's main area of business falls into the food sector and boast 500+ stores nationwide. Asda is a variety retailer stretched over numerous sectors, which include, entertainment clothing and footwear. It is considered a multi-channel retailer, with a blend of store locations and growing online presence. Asda's stores are traditionally, large purpose built units located on the outskirts of a town, much like Walmart stores in the USA.Similarities continue throughout the UK operation, with the Walmart culture permeating through stores amongst all 143000 ‘Colleagues'. Furthermore, matching Walmart's low-price operational strategy. My role within this retailer is a part time night replenishment colleague. Economic. The UK unemployment figures are an important aspect of the economy for Asda to watch as fluctuations can hugely effect su pply and demand, impacting future sales. Higher unemployment, means Asda will see a greater demand on lower priced goods.Asda promotes its self as being a ‘low priced' retailer, so, it may also be fair to expect an influx of new customers increasing demand further. Reacting quickly to a change in the economic climate can increase the chance of gaining market share. Utilising their immense buying power, Asda can demand lower cost prices from suppliers, facilitating demand from an expected shift in consumer buying. Considering international manufacturers, where the GBP proves particularly strong may also be one way of achieving higher profit margins.Social and Cultural Management considering a particular location for a new Asda store must measure the concentration of the local market and consider Social and Cultural forces. They can help determine if an area is understored and demand is present. Statistics of particular interest are likely to be, age ranges, population density, income ranges, level of car ownership and local transport links. Use of gravitational models will help determine the ‘pull’ of a store location. Huff’s (1963), is one such model and aims to predict this.The model calculates the probability a shopper is likely to visit our new store against local intertype retailers in its strategic group. Retailers within Asda’s group are likely to be Tesco or Sainsbury’s. In addition, analysing the demographic and cultural make up of the area should provide good indication of products and services best suited for our new store. For example, if our considered area had recently had a high level of Eastern Europeans settle then incorporating a generous ‘world foods’ section within our assortment would make sense.However, if the area had an very low level of ethnic diversity there would be little demand and focus elsewhere would prove more profitable. Technology. The introduction of Smart-phones in recent years has given customers power to access price comparison sites while in-store. Potentially this trend poses a huge threats for Asda â€Å"with these devices, customers have all of the power of the Internet at their fingertips to enable them to shop smarter† (Mobile Commerce Daily,2011) Potentially this trend poses a huge threats for Asda.An increase in store waste, particularly of perishable goods as well as loss of sales to rival retailers. Additional pressures to control costs, namely wages, to ensure the store remains profitable despite loss in sales. Political and Legal. Asda sell a range of tobacco products as part of their supermarket assortment. These products are usually sold from individually manned Kiosks, separate from the main store. In an effort to address the problem of young people taking up smoking, government are forcing retailers to cover tobacco products out of view with metal roller shutters.Other measures include a raise of the legal purchase age of suc h products and further tax increase on tobacco. Operationally, managers will need to establish good procedures which will keep inconvenience to a minimum. Other than the initial cost of installing the shutters, additional expenses relating to employee training costs should be considered. Furthermore, political and legal forces could negatively impact customer flow, which may lead to a dip in impulse buys (confectionery) and commission earners (lottery) sales.Both are often located at the kiosk and are add-on purchases to tobacco. Ecological. Environmentalists are keen to highlight links between waste management in businesses, global climate change and weather. Business' who manufacture, distribute and/or use products have been attributing to global warming, all processes expel greenhouse gasses which have major repercussions on the planet. According to waste legislation business' must establish ‘a system that ensures waste producers or those handling waste follow the waste hie rarchy (i. e. revention, reuse, recycling, recovery, disposal)' ( Surrey County Council, 2012) This forces business' to consider waste management throughout their infrastructure. Managers would have needed to assess the supply chain and identify areas where improvements can be made. There are likely to be initial expenses for man hours, new equipment and facilities. Very recently Asda has seen the effects of global climate change directly impact their business. Extreme weather has lead to mass flooding in areas in the UK. In these areas trade would certainly diminish while neighbourhoods recover from the disaster.Stores may also have experienced damage to buildings and stock. A further example of this force affecting Asda. In order to identify Asda's competitors, firstly I need to establish the number of other retailers and their size also operating in the same sector, food grocery. According to market share statistics, in the 12 weeks to 7 Aug 2011, based on similar sized operation , Asia’s direct competitors were Tesco, Sainsburys and Morrisons. This is highly saturated sector due to the number of large retailers operating within it. 12 wks to 7 Aug 2011 Tesco 30. 5 % Asda 17. % Sainsbury’s 16. 1 % Morrison’s 11. 7 % (guardian. co. uk[-;0], 2011) Further competition may come from retailers entering the sector. A high number of entrants may indicate the market is highly competitive, however, high levels of retailers will also leave if the competition is just too high. Kwik Save is a good example of this, ‘It struggled to make profits in the 21st century as superstore operators such as Tesco[->1] and Sainsbury's[-;2] introduced their own budget brands (wikipedia. org,2012). Kwik Save promoted themselves as a low-priced grocery retailer.Kwik Save are expected to make a return to the market this year and may become another threat to Asda as they previously operated by similar strategies. Establishing which of the competitors offer produ cts most similar to Asda's assortment will be another indicator, as the level of competition will intensify where a competitors assortment proves to be a suitable substitute to Asda's own. All four of the major grocery rivals do offer similar products and services. Asda and Tesco offer financial services and online catalogue shopping via ‘Tesco Direct' and ‘Asda Direct'.Both compete highly on price and have been known to enter into price wars in order to gain market share. They have similar target markets and operational strategies. Although, Tesco has chosen to delve into the UK convenience sector and also dipped their toe into international markets both have proven a great success. In a similar fashion Asda has expanded further into multi-channel retailing opening ‘Asda Living' stores which offer wider ranges of clothing, home ware and childcare goods. These manurers have helped differentiate the businesses.Sainsbury's and Morrison's in turn offer similar product s and also have an online presence, Sainsbury's also offer financial services. Both have partnered with retailers operating in other sectors, Sainsbury's with Homebase a DIY chain and Morrison's with Kiddiecare. com. Although Sainsbury's has introduced a recent price promise to be cheaper on ‘branded' products than their competitors, they differentiate their offering through focusing on quality. Asda has counter-attacked this by introducing lines that have been modified and re-branded as superior in taste and quality, while still low on price.How Asda might need to manage colleagues with the introduction of Climate Change Legislation. Senior Asda managers will need to establish how the legislation affects them, what changes need to be made within the business and how costly it will be. Discussions about the changes with all departments involved. HR will need to address recruitment matters, ensuring suitably skilled people are in place. This may involve recruiting from within t he business and providing the most suitable colleague with specific training.Or looking outside Asda for those who already posses adequate experience in the area of Waste Management. This may be a preferred option if the business has time constraints, although may result in higher extrinsic costs. Once a plan has been put in place, new procedures established, then information needs to be cascaded down through the hierarchy. Delivering this information via training courses which may also save on company time and money. Other benefits of this style is a number of colleagues can receive the same information at the same time, rather than individually.It is important that everyone receives the same information and it is communicated clearly for understanding. Managers can then go on to monitor colleagues periodically through appraisals. Appraisals can help assess colleagues, making sure the new procedure is being incorporated correctly into their day-to-day duties. Monitoring colleagues performance can highlight problems and identify further training requirements. Referencing Guardian. co. uk(2011)'Supermarkets:Changing Market Share'[Online],http://www. guardian. co. uk/[-;3] (Accessed 21 June 2012)Mobile Commerce Daily (2011) ‘Are mobile price comparison apps a threat to retailers? ‘ [Online],http://www. mobilecommercedaily. com/ (Accessed 21 June 2012) Surrey County Council (2012) ‘Important-details of future English environmental legislation and consultations' [Online], http://www. surreycc. gov. uk/ (Accessed 21 June 2012) Wikipedia (2012)'Kwik Save' [Online], http://en. wikipedia. org/ (Accessed 21 June 2012) [-;0] – http://www. guardian. co. uk/ [-;1] – http://en. wikipedia. org/wiki/Tesco [-;2] – http://en. wikipedia. org/wiki/Sainsbury%27s [-;3] – http://www. guardian. co. uk/(Accessed

The Jordanian Healthcare System Essay - 1085 Words

Introduction Jordan is an Arab country, situated in the Middle East, bordered by Syria, Saudi Arabia, Iraq and Israel. Located at the crossing point of a number of major highways which connect the Middle East, the country is strategically important, but also the destination for successive waves of immigrants. Jordan’s large immigrant population has created an significant and lasting impact upon the nature of the country’s health care system. History of Health Care in Jordan The Hashemite Kingdom of Jordan is a constitutional monarchy that gained independence from Great Britain on May 25, 1946. With a population of just over 6 million, 82.6% of Jordanians live in urban areas, and 17.4 % in rural areas. The political system is†¦show more content†¦The country spends approximately 6.1% of Gross Domestic Product on healthcare. The Ministry of Health (MOH) is the biggest single provider of health care services, covering approximately 40% of the population. Private insurance covers approximately 20%, while the remaining population that is not eligible for free health care, may still purchase it at highly subsidized prices. It is possible for everyone in Jordan to receive some form of health care. The public sector programs are comprehensive and include pharmaceuticals, with minimal cost to patient. The uninsured received highly subsidized public health services, but have to pay full price for pharmaceuticals. Private insurance policies vary widely in the coverage they provide. Jordan has achieved universal child immunization. Although nursing homes exist in Jordan, the older population is often cared for by family members. The country’s health care infrastructure is considered to be modern, with health care being well distributed throughout the country. One problem area is Bedouin access to health care. The Bedouin or â€Å"desert dwellers† live primarily in the desert and provide the origins of a large part of the Jordanian population (â€Å"The people,† n.d.). A study by Hasna, Hundt, Al-Smairan and Alzaroo (2010) of the quality of primary nursing care for Bedouins inShow MoreRelatedThe Syrian Conflict Of The United Nations Inter Agency On Water Essay1250 Words   |  5 Pagesis ranked one of the ten water-depressed countries in the world. The growth in Syrian population has increased this strain, with UN estimates revealing that it may take weeks before a single drop reaches a local tap. The crisis has led both the Jordanian community and Syrian refugees to seek solutions, which has led to extracting groundwater from unkempt and polluted areas. This result has brought forth an increase in diseases and greater rise in mortality rates. 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Factors Affecting Academic Performance of Working Students

CHAPTER 1 THE PROBLEM AND ITS BACKGROUND Introduction Student jobs have become a sort of trend among students around the world, who wants to be a working while they are studying. In short, the term that suits this trend is ‘Earn and Learn ‘ policy. Other reasons why student jobs are popular among students are they help to cope up with the constant increase in tuition fees, and a way to afford further educations. The problem has been developed with the question as to how the corresponding workloads and required working hours of working students affect their academic performance at EARIST. As a researcher, the main purpose of the study is to know the factors that affect the academic performance of working students. In†¦show more content†¦CHAPTER 1 THE PROBLEM AND ITS BACKGROUND Introduction Student jobs have become a sort of trend among students around the world, who wants to be a working while they are studying. In short, the term that suits this trend is ‘Earn and Learn ‘ policy. Other reasons why student jobs are popular among students are they help to cope up with the constant increase in tuition fees, and a way to afford further educations. The problem has been developed with the question as to how the corresponding workloads and required working hours of working students affect their academic performance at EARIST. As a researcher, the main purpose of the study is to know the factors that affect the academic performance of working students. In addition, this paper aims to provide encouragement and motivation to all students especially to those who are financially distressed to pursue and finish a college degree in order to competitive in the future and be able to realize their goals and aspirations. It may also provide learning experienc es and information to other students who are not working. 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Essay on Double Jeopardy - the 5th Amendment - 1179 Words

Constitutional Law Unit 8: Double Jeopardy Jesely Rojas July 13th, 2010 â€Å"The 5th Amendment is an old friend and a good friend, one of the great landmarks in mens struggle to be free of tyranny, to be decent and civilized.† William O. Douglas Prepare a paper analyzing why, under certain circumstances, two state trials in two different states for the murder of the same person will not violate the Double Jeopardy Clause of the U.S. Constitution. Also, analyze why, under certain circumstances, a state trial and a federal trial may be held for the murder of the same person without violating the Double Jeopardy Clause of the U.S. Constitution. As part of this assignment, you should conduct legal research to support your analysis of†¦show more content†¦The double jeopardy rule would prevent the state government from subsequently prosecuting and trying that same person for that same crime. As a general proposition, the Double Jeopardy Clause applies only to criminal cases and consists of three separate constitutional protections. First, it protects against a second criminal prosecution for the same offense after absolution. Second, it protects against a subsequent prosecution for the same offense after conviction. Fi nally, it protects against multiple punishments for the same offense. In Palko v. Connecticut (1973), the U.S. Supreme Court rules that double jeopardy protections do not extend to defendants in state criminal trials. The court says that while some fundamental rights, such as free speech, apply to states through the 14th Amendment, double jeopardy protection is not one. Double Jeopardy clause suggests that the framers would not have accepted the dual sovereignty doctrine. The premise of the dual sovereignty doctrine, and the reason the Court was able to avoid balancing all of the interests involved, was that successive prosecutions in different jurisdictions are not defined as the same offense, so the Double Jeopardy Clause is bypassed. In Hudson v. United States (1997), the U.S. Supreme Court rules that it does not violate the double jeopardy clause to criminally prosecuteShow MoreRelatedThe Fundamental Principle Of Fairness And Equal Rights2219 Words   |  9 Pagesconstitution. The constitution becomes the standard that the court should follow when making judgments. The Due Process is applied in the court cases under the 5th amendment in the constitution to protect individuals, which allows the constitution to illustrate the principle of fairness in a documented form. The Due Process clause under the 5th amendment exists to defend rights of citizens in court. 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Essentially, the Double Jeopardy Clause of the 4th Amendment says no one shall be tried twice for the same offense. The double jeopardy clause serves two functions, both of which should be considered when faced with a double jeopardy problem. One traditional fun ction of the double jeopardy prohibition has been to preventRead MoreThe United States of America is known to be the land of the free. In addition to that, it is the800 Words   |  4 Pageslaw. Basic rights such as the first ten amendments, or the Bill of Rights, ensure our ability to petition, go on strike, protect us from double jeopardy in court, and even allow us to carry firearms for a well-regulated militia. Other notable amendments includes the 13th amendment which abolished slavery, the 14th amendment which ensures the right of being an American citizens no matter race if the person resides in the respective country, the 15th amendment which protects the voting rights of allRead MoreThe 5th Amendment706 Words   |  3 PagesThe 5th Amendment Basically, the 5th Amendment states that no one shall be charged with capital crimes without a Grand Jurys permission, except in cases regarding the military while under service in wartime or public danger. No one can be put on trial again for the same crime. You cant be forced to testify yourself. That no one should be executed, jailed, or have property seized without a legal precedent. Also you cant be put through cruel or unusually punishment.Read MoreProcedural Due Process Of Law980 Words   |  4 PagesStates, and it is a big deal to many Americans. Think of all the privacy laws, and the personal space that we all like to enjoy, due process plays a key role in securing that freedom. Due process gave way in many amendments one of which would be the sixth amendment. This amendment makes it clear that every American citizen is entitled to a fair, speedy and public trial; the right to an impartial jury; the right to be informed of the nature and cause of the accusation against him or her; the rightRead MoreEssay on The 5th Amendment698 Words   |  3 Pages nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;The 5th Amendment nbsp;nbsp;nbsp;nbsp;nbsp;Basically, the 5th Amendment states that no one shall be charged with capital crimes without a Grand Jurys permission, except in cases regarding the military while under service in wartime or public danger. No one can be put on trial again for the same crime. You cant be forced to testify yourself. That no one should be executed, jailed, or have property seized without a legalRead MoreEssay on Criminal Law Evaluation698 Words   |  3 PagesGilford Abstract Laws tend to make the lives of every individual safer and pleasant. The subject of this paper focuses on evaluating and identifying the Constitutional safeguards within the 4th, 5th, and 6th amendments of the United States Constitution. How these safeguards to the 4th, 5th, and 6th amendment will apply to juvenile and adult court proceedings. Finally, this paper will focus the impact that these safeguards, such as speedy trial, Miranda warning, exclusionary rule, and right to counselRead MoreThe Impact Of Civil Justice System On The United States1287 Words   |  6 PagesThis paper will provide a written analysis of the impact of the 4th 5th 6th 8th and 14th amendments in the processing of criminals through the justice system, and the impacts it has in the criminal justice system’s due process and processing of an offender. The process of which the criminal justice system protects defendant’s and victim’s rights is called the Due process. I will attempt to exp lain how the due process is applied to the U.S. Constitution, to include giving examples, explain the proceduralRead MoreThe Bill of Rights: The Most Important Documents in American History1579 Words   |  6 PagesRights into the Constitution, Congress did not approve the inclusion of twelve Amendments, or Twelve Articles, until September 25, 1789 (History of the Bill of Rights, 2012). While the first two amendments were rejected, the first ten Amendments of the Constitution make of the United States Bill of Rights. The Bill of Rights was formally ratified on December 15, 1791 (Independence Hall Association, 2012). The First Amendment protects an individuals freedom of speech and assembly and states, Congress

Red Scares and Civil Liberties free essay sample

This period of time became known as the first ? Red Scare?. Similarly, after World War II and during the outbreak of the Cold War, Americans discovered that the Soviet Union had detonated an atomic bomb long before anyone predicted they would be able to produce one. The Republican Party reasoned that the Soviets must have used an extensive espionage network to acquire the American documents on the atom bomb. At the time, there was only a little evidence of such espionage, but it was enough to feed the second Red Scare and the anticommunist movement led by Republican Senator Joseph McCarthy.During both Red Scares, anyone who was not as patriotic as possible? Including such people as draft dodgers, ? Slackers? , German-Americans, Russian-Americans, and immigrants? Was a suspected communist. Many arrests were made at the expense of civil liberties. In the first Red Scare alone, over 5,000 people were arrested and many of them were convicted and even deported or sent to death without the benefit of a court hearing. One man was arrested in Boston for just like a radical? (2). One well-known court case of this nature involves two men, Nicola Cacao and Bartholomew Vendetta.They were charged with murdering two people at a hoe company. Upon arrest they told lies about what they had been up to, and they both were admitted atheists, anarchists, and both objected to World War I. They were also both Italian aliens. They were convicted for the murders and sentenced to death, but appealed their convictions numerous times. They never won. Their entire case was simply built on circumstantial evidence and they had many supporters who believed they were victims of the anticommunist frenzy sweeping over the nation. At his execution, Bartholomew Vendetta even stated that that is why he thought they were singled out: ?I am offering because I am a radical; have suffered because I was an Italian, and indeed am an Italian.? (1). Vendetta and Cacao were not the only people to have their rights stepped on during either Of the Red Scares. According to the Bill Of Rights, when accused of a crime, a person has a right to know what they are being accused of, and they have a right to an impartial jury. During the Red Scares, if a person was accused of being a communist, it was almost impossible to find an unbiased jury. The jury members were already dead-set against the defendant, and even if the evidence was insufficient they would still convict.Sometimes the accused communist were not even given a trial and were just sentenced on the spot. People were stripped left and right of the civil liberties guaranteed to them by the Bill of Rights. All for the sake of ? National security?. While some of the accusations against people may have been rightly justified, many others who were the victims of the ? Palmer Raids? Or McCarthy were only innocents who were deemed ? Weird? Or ? Wrong? By society. For example, many homosexuals were thought to be communists, and if you were a communist, then you were thought to also be a homosexual.Although the idea behind the Red Scares? Peeping the nation safe? Was a noble one, the government was seriously flawed in their approach and went about it in a less-than-noble fashion. According to the Bill of Rights, a person? S civil liberties are absolute, and although sometimes it is necessary for the public to forgo some of them, like in times of war, the Red Scares took that sacrifice to the extreme which need? T have been done. And some civil liberties should never be taken away, even if the world was on the dawn of the Apocalypse.Here is an example of a right promised by the Bill of Rights that can be taken away to protect public safety: the freedom of speech. There is actually a law that says a person can be prosecuted for his speech if it presents a ? Clear and Present Danger? To the state. As Justice Holmes stated in 191 9, while presiding over the case that produced this law: ? You cannot shout fire falsely in a crowded theatre? (4). Any speech that provokes people to act in a way that is dangerous to the country? S welfare can and will be prosecuted, despite the first amendment that promises the right to free expression.A right promised by the constit ution that should never be taken away is stated in the 5th Amendment: No person shall be held to answer for a capital, r otherwise infamous crime, unless on a presentment or indictment of a Grand Jury, except in cases arising in the land or naval forces, or in the Militia, when in actual set-vice in time of War or public danger; nor shall any person be subject for the same offence to be twice put in jeopardy of life or limb; nor shall be compelled in any criminal case to be a witness against himself, nor be deprived of life, liberty, or property, without due process of law; nor shall private property be taken for public use, without just compensation. (3) Many of the people accused were denied this right during the Red Scares. They were arrested and subjected to beatings in prison. They did not get fair trials or impartial juries (which is stated in the 6th Amendment? Another right that should never be taken away). They were denied life, liberty, and property all because they viewed the world in a different light, or they were viewed by the world in a different light. It never should have happened to them? Both scares happened after a war, during peacetime, so there was no excuse to deny the accused communists their rights.