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How Quantum Levitation Works

How Quantum Levitation Works Some videos on the internet show something called quantum levitation. What is this? How does it work? Will we be able to have flying cars? Quantum levitation as it is called is a process where scientists use the properties of quantum physics to levitate an object (specifically, a superconductor) over a magnetic source (specifically a quantum levitation track designed for this purpose). The Science of Quantum Levitation The reason this works is something called the Meissner effect and magnetic flux pinning. The Meissner effect dictates that a superconductor in a magnetic field will always expel the magnetic field inside of it, and thus bend the magnetic field around it. The problem is a matter of equilibrium. If you just placed a superconductor on top of a magnet, then the superconductor would just float off the magnet, sort of like trying to balance two south magnetic poles of bar magnets against each other. The quantum levitation process becomes far more intriguing through the process of flux pinning, or quantum locking, as described by Tel Aviv University superconductor group in this way: Superconductivity and magnetic field [sic] do not like each other. When possible, the superconductor will expel all the magnetic field from inside. This is the Meissner effect. In our case, since the superconductor is extremely thin, the magnetic field DOES penetrates. However, it does that in discrete quantities (this is quantum physics after all! ) called flux tubes.Inside each magnetic flux tube superconductivity is locally destroyed. The superconductor will try to keep the magnetic tubes pinned in weak areas (e.g. grain boundaries). Any spatial movement of the superconductor will cause the flux tubes to move. In order to prevent that the superconductor remains trapped in midair.The terms quantum levitation and quantum locking were coined for this process by Tel Aviv University physicist Guy Deutscher, one of the lead researchers in this field. The Meissner Effect Lets think about what a superconductor really is: its a material in which electrons are able to flow very easily. Electrons flow through superconductors with no resistance, so that when magnetic fields get close to a superconducting material, the superconductor forms small currents on its surface, canceling out the incoming magnetic field. The result is that the magnetic field intensity inside  of the surface of the superconductor is precisely zero. If you mapped the net magnetic field lines it would show that theyre bending around the object. But how does this make it levitate? When a superconductor is placed on a magnetic track, the effect is that the superconductor remains above the track, essentially being pushed away by the strong magnetic field right at the tracks surface. There is a limit to how far above the track it can be pushed, of course, since the power of the magnetic repulsion has to counteract the force of gravity. A disk of a type-I superconductor will demonstrate the Meissner effect in its most extreme version, which is called perfect diamagnetism, and will not contain any magnetic fields inside the material. Itll levitate, as it tries to avoid any contact with the magnetic field. The problem with this is that the levitation isnt stable. The levitating object wont normally stay in place. (This same process has been able to levitate superconductors within a concave, bowl-shaped lead magnet, in which the magnetism is pushing equally on all sides.) In order to be useful, the levitation needs to be a bit more stable. Thats where quantum locking comes into play. Flux Tubes One of the key elements of the quantum locking process is the existence of these flux tubes, called a vortex. If a superconductor is very thin, or if the superconductor is a type-II superconductor, it costs the superconductor less energy to allow some of the magnetic field to penetrate the superconductor. Thats why the flux vortices form, in regions where the magnetic field is able to, in effect, slip through the superconductor. In the case described by the Tel Aviv team above, they were able to grow a special thin ceramic film over the surface of a wafer. When cooled, this ceramic material is a type-II superconductor. Because its so thin, the diamagnetism exhibited isnt perfect ... allowing for the creation of these flux vortices passing through the material. Flux vortices can also form in type-II superconductors, even if the superconductor material isnt quite so thin. The type-II superconductor can be designed to enhance this effect, called enhanced flux pinning. Quantum Locking When the field penetrates into the superconductor in the form of a flux tube, it essentially turns off the superconductor in that narrow region. Picture each tube as a tiny non-superconductor region within the middle of the superconductor. If the superconductor moves, the flux vortices will move. Remember two things, though: the flux vortices are magnetic fieldsthe superconductor will create currents to counter magnetic fields (i.e. the Meissner effect) The very superconductor material itself will create a force to inhibit any sort of motion in relation to the magnetic field. If you tilt the superconductor, for example, you will lock or trap it into that position. Itll go around a whole track with the same tilt angle. This process of locking the superconductor in place by height and orientation reduces any undesirable wobble (and is also visually impressive, as shown by Tel Aviv University.) Youre able to re-orient the superconductor within the magnetic field  because your hand can apply far more force and energy than what the field is exerting. Other Types of Quantum Levitation The process of quantum levitation described above is based on magnetic repulsion, but there are other methods of quantum levitation that have been proposed, including some based on the Casimir effect. Again, this involves some curious manipulation of the electromagnetic properties of the material, so it remains to be seen how practical it is. The Future of Quantum Levitation Unfortunately, the current intensity of this effect is such that we wont have flying cars for quite some time. Also, it only works over a strong magnetic field, meaning that wed need to build new magnetic track roads. However, there are already magnetic levitation trains in Asia which use this process, in addition to the more traditional electromagnetic levitation (maglev) trains. Another useful application is the creation of truly frictionless bearings. The bearing would be able to rotate, but it would be suspended without direct physical contact with the surrounding housing so that there wouldnt be any friction. There will certainly be some industrial applications for this, and well keep our eyes open for when they hit the news. Quantum Levitation in Popular Culture While the initial YouTube video got a lot of play on television, one of the earliest popular culture appearances of real quantum levitation was on the November 9 episode of Stephen Colberts The Colbert Report, a Comedy Central satirical political pundit show. Colbert brought scientist Dr. Matthew C. Sullivan from the Ithaca College physics department. Colbert explained to his audience the science behind quantum levitation in this way: As Im sure you know, quantum levitation refers to the phenomenon whereby the magnetic flux lines flowing through a type-II superconductor are pinned in place despite the electromagnetic forces acting upon them. I learned that from the inside of a Snapple cap.He then proceeded to levitate a mini cup of his Stephen Colberts Americone Dream ice cream flavor. He was able to do this  because they had placed a superconductor disk within the bottom of the ice cream cup. (Sorry to give up the ghost, Colbert. Thanks to Dr. Sullivan for speaking with us about the science behind this article!)

Ethical dilemma Case Study Example | Topics and Well Written Essays - 1250 words

Ethical dilemma - Case Study Example For instance, socio-cultural background related to family structure and family inclusion often dictates personal responses to situations involving troubled families. The ethnographic background of the importance of relationships in the nuclear family often determine what should be the social norm regarding proper treatment of those within the family unit. Social class also plays a factor in determining ethical position as being in a middle-class family does not afford the resources to engage in high-dollar recreational activities (as one example), thus the family unit spends more quality time together inter-dependently. The closeness achieved with other family members through social class limitations tends to dictate the importance of lineage and household relationships that somewhat influences ethical judgment. Therefore, in this particular case, I can sympathize with Elizabeth Smith’s position for finding concern about the potential dangers to her brother’s children, even though sexual abuse allegations against their neighbor were unfounded by evidence. In my personal view, children are valuable and important elements of lifestyle and affiliation from a needs perspective, thus prejudgments can play a role in determining what the right course of action should be in Smith’s situation. Even though social location determines some of my personal values related to the case, as a social worker I must consider the nature of the CASW Code of Ethics and the Standards of Practice as a guide rather than relying on personal dispositions on the issue. According to the Code of Ethics, confidentiality is one of the cornerstone values that the social worker must maintain. Value 5 of the CASW template describes that no information about the client should be discussed without informed consent from the client (CASW, 2005). Further, Value 3 of the Code of Ethics also states that

Religion Essay Example | Topics and Well Written Essays - 500 words - 10

Religion - Essay Example The idealized, spiritualized essence of God can be comprehended only by refined minds, bent on spiritualism, and only after sustained effort. To the vast majority of mankind, the visible manifestation of God goes a long way towards focusing the inner mind and thoughts on Divinity. This initial, primitive belief that God is only present in that particular picture, or only in that particular form, can, with spiritual growth, metamorphose into the realization that God is an all-pervading, formless entity. Visible forms can be justified as symbolic, spiritual aids to the realization of God. One of the basic tenets of Christianity is the belief that God sent his only son, Jesus Christ, to earth, as the Redeemer to deliver sinful humanity from eternal damnation. Jesus took upon himself the collective sins of humanity and accepted his martyrdom on the cross as the expiation of these sins. This belief probably arises from the primitive belief that the deities must be placated through sacrifice, and the shedding of blood is a prerequisite for absolution. This sacrificial offering, be it the ox of the ancient Romans, or the lamb of the Jews, must be the purest and most perfect to serve the purpose. In this context, the pure, sinless Jesus constitutes the perfect sacrifice in the eyes of God. This ‘substitution theory,’ according to which Jesus’ vicarious punishment redeemed humanity, has a major flaw. If one concedes that Jesus’ punishment has indeed absolved humanity from sin, does it follow that man is now free to sin without having to face the c onsequences of his actions? If Jesus has obtained a prior, blanket absolution for all sinners, this is something in the light of a ‘license to sin’ with impunity. This poses a problem to the acceptance of the substitution theory. The word ‘Christ’ means the ‘Anointed One,’ or the

Annotated bibliography Essay Example | Topics and Well Written Essays - 1000 words - 5

Annotated bibliography - Essay Example 2008-01-2489 Shannon Mayer, in the article â€Å"The Sport-Utility Vehicle,† she Debates on a Fuel-Economy Standards in Thermodynamics, declaring that the world of the 21st century will problems because of the increasingly population growth in this world and that in so as to confront these problems we require engineers who are critically analyzers who can think further as well as knowing the technical principles of their fields. In her format it shows that there was course participated by student where they were debating about efficiency of fuel and standard of fuel-economy. The experimental format of the article begins by giving background information to the student followed by data, then the in-class discussion, and finally the results. The author’s obvious purpose was to demonstrate a particular group of students on fuel economy standards of Sport Utility Vehicles in agreement with societal relevant matter in developing of their technical proficiency in thermodynamics. The required audience is most possibility individuals who are mechanical engineers, particularly to those who concentrate in thermodynamics. Mayer’s article connect to my topic as it is an enlightening course for students in informing them on how to be environmentally steady is very important. It associate to a little of the other articles (Diesel Engines and Racing Green) in the sense that they are all talking of efficiency in either ways. From a thermodynamic point of view, they are attempting in finding the finest ratio of engine output vs. engine input, while there are still issues like friction, loss of heat, and incomplete combustion of gases that reduces the attainable efficiency. the article starts that â€Å"The issue of automobile fuel economy profit from a awareness with thermodynamics. Particularly heat engines, hence is adoptable to a wide

The Study of Proteome

The Study of Proteome The breakthrough in the study of genomics has created a great impact for biological research. For instance, the complete genome sequencing accomplished for various model organisms such as bacteria, yeast and drosophila has been a key to understanding the diversity and functions in living system (Liebler, 2002). However, the gene products, proteins are playing crucial complex functions in sustaining the living system. Therefore, in order to acquire a clearer picture about the function of the living cells at molecular level, it is important to study the entire set of protein expressed by a genome, cell, tissue or organism throughout the cell cycle as known as proteome (Monti et al., 2005). This study of proteome is termed proteomics which is mainly focus on the identification of proteins, determination of the interaction between various proteins as a part of a larger network and outlining the 3D structures of proteins (Liu Hsu, 2004). According to Liebler (2002), the applications of proteomics comprised of mining, protein-expression profiling, protein-network mapping and mapping of protein modifications. These four principals then bring about the branches of proteomics which are the sequence and structural proteomics, expression proteomics, interaction proteomics as well as functional proteomics. i. Sequence and structural proteomics Structural proteomics is generally aimed at efficiently convert the gene sequence into 3D structural information which will then being used to facilitate the prediction of protein folding and functions afterward (Yee et al., 2002). 3D structure prediction and determination of proteins on a genome-wide scale are managed to provide substantial information in understanding the structure-function relationships of the particular proteins (Liu Hsu, 2004). The approaches commonly employed for this area of study are NMR (nuclear magnetic resonance) spectroscopy and X-ray crystallography. In a study done by Yee et al. (2002), structural proteomics of small proteins based on data of 513 proteins from five microorganisms is done by using NMR spectroscopy. Small proteins are more acquiescent for structure analysis primarily due to its solubility as protein aggregation appeared to be a limitation for structural proteomics (Yee et al., 2002). NMR evaluation of proteins is performed after ran through a series of cloning, expression and purification processes. The chosen targets for NMR screening by Yee et al. (2002) were single chain polypeptides with not more than 23 kDa molecular mass. PCR was involved to amplify the targets from genomic DNA. Subsequent cloning of the target proteins into vectors was then carried out. Batch Ni2+ affinity chromatography was done for the extraction of cells (Yee et al., 2002). Varian INOVA 500- or 600-MHz spectrometer was used to attain all the 1H-15N heteronuclear single quantum coherence (HSQC) spectra and the NMRPIPE software package was utilized to processed the data (Yee et al., 2002). The HSQC spectrum is to provide a diagnostic fingerprint of a protein. Twelve of the proteins were considered to be suitable for structure determination and have their 3D structures successfully analysed which were conserved without functional annotation (Yee et al., 2002). Among them, eight out of twelve were the members of uncharacterized cluster of orthologous groups (COG) or protein superfamilies. In order to know whether a 3D structure can be predicted, the sequences were submitted to SwissModeler to be analysed based on sequence similarity. ii. Expression proteomics Human Protein Atlas (HPA) launched by Swedish researchers in 2003 is a comprehensive effort in mapping the proteins expressed in the body’s tissue and cells according to the genes documented by Human Genome Project (Marx, 2014). HPA principally looked at the spatial distribution and protein-expression patterns of human proteins as well as comparing the protein expression between cancerous and normal tissues. The expression proteomics is a focus for proteome study which targets on measurement of the up- and down-regulation of protein levels as well to explore the protein expression patterns in abnormal cells for biomedical application (Monti et al., 2005). Approaches like mass spectrometry, 2D-gel electrophoresis and protein arrays are used in expression proteomics. Mazzanti et al. (2006) as done an investigation upon the differential expression proteomics of human colon cancer to look at the operative pathway of early stages of human colon cancer and to compare with normal colon tissue. In this case, they were using 2D-gel electrophoresis to observe the differences in protein expression at various differentiation levels. After the tissues were properly collected and homogenized, Western Blot analysis was carried out to evaluate the expression levels of the proteins and followed by 2D-GE. The differences in intensity of each spot and the normalized spot volume were calculated and statistically analysed. Matrix-assisted laser desorption ionization-time-of-flight mass spectroscopy analysis of tryptic peptides was performed to detect the differentially expressed samples processed by 2D-GE (Mazzanti et al., 2006). Lastly, a search through NCBI non-redundant databases and SWISSPROT was completed to identify the proteins. As a result, several proteins were found differentially expressed in colon cancer and normal tissue. Mazzanti et al. (2006) have obtained 11 and 15 proteins from healthy and cancerous tissues which were categorized according to the pathway they involved respectively. In addition, they also claimed that cancer tissues preferably utilize glycolysis due to selective repression of ÃŽ ²-subunit ATPase expression and limited substrate availability to mitochondria (Mazzanti et al., 2006). iii. Interaction proteomics Interaction proteomics emphasis on the elucidation of protein-protein interaction to which the multitude functions of proteins in association with individual components of proteome and the formation of multimeric complexes (Và ¶lkel et al., 2010). Frequently utilized approaches for interaction proteomics are like mass spectrometry (MS), affinity captured combined with mass spectrometry and yeast 2-hybrid techniques. Và ¶lkel et al. (2010) mentioned that characterize protein complexes from bacteria, yeast, mammalian cells and some multicellular organisms can be done by using tandem affinity purification-mass spectrometry (TAP-MS). TAP is functioned based on the dual purification of protein assemblies by sequential utilization of two affinity tags spaced by a TEV (tobacco etch virus) protease cleavage site (Và ¶lkel et al., 2010). TEV is a sequence-specific protease that cleaves a recognition site of seven-amino-acid (Glu-X-X-Tyr-X-Gln/Ser) which is rarely found in mammalian proteins (Berggà ¥rd et al., 2007; Và ¶lkel et al., 2010). This epitope-tagging purification strategy further improves the sample purification prior to protein identification by MS. In the first purification step, the TAP-tag protein is bound to specific column like immobilized Ig (Berggà ¥rd et al., 2007; Và ¶lkel et al., 2010). Retrieval of TAP-tag protein is done by adding TEV-proteinase. The protein complex is then immobilized by CBP (calmodium-binding peptide) of TAP tag to a second column, the calmodulin-coated beads in the second affinity step. This calcium-dependent CBP-calmodium interaction enables the elution of final protein complex for MS protein identification by means of calcium chelation (Và ¶lkel et al., 2010). The TAP purification of protein complex is independent of the availability of specific antibodies. It is used to accomplish large-scale protein interaction mapping of lower organisms and decode the smaller interactomes and signalling pathway in mammals (Và ¶lkel et al., 2010). However, this technique may not be able to identify low stoichiometric complexes, transient interactions or under-represented interactions occurred specifically in some physiological states of cells growing exponentially (Và ¶lkel et al., 2010). iv. Functional proteomics The objectives of functional proteomics are to characterize the biological function of unknown proteins, multiprotein complexes and descript the cellular mechanisms as well as signalling pathway at molecular level (Monti et al., 2005). Henning and Ilag (2003) stated that the protein functions assessment could be done based on the individual cell types and interaction of protein partners. Functional proteomics implement the concept that functional inactivation within the physiological environment of a targeted protein can be used to determine its function (Henning Ilag, 2003). Tools that are typically employed in functional proteomics include 2D-gel electrophoresis, MS, MALDI-TOF (matrix-assisted laser desorption ionization-time of flight) MS and affinity-based procedure. The affinity-based procedure is worked on the idea that a suitable tag of the expressed target protein can be used as a bait to fish out its partners from a cellular extract (Monti et al., 2005). Brookes et al. (2002) utilized a high-throughput two-dimensional blue-native electrophoresis in the study of functional proteomics for mitochondria and signalling pathway. As mitochondrial membrane proteins exhibit hydrophobic properties, precipitation is occurred in standard 2D gels during the first dimension isoelectric focusing. Thus, the 2D blue-native gel electrophoresis is used resolve this problem. The first dimension of 2D blue native gel electrophoresis involved the solubilization the membrane protein complexes into its native form. This is followed by the second dimension utilizing the sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-page) with its gel staining performed by employing a mixture of Coomassie blue G-250 and R-250. SDS-page is worked on denaturing the protein complexes and enables them to resolve into their component subunits (Brookes et al., 2002). A partial mitochondrial proteome map was then assembled by using MALDI-TOF MS coupled with tryptic peptide fingerprinting. This 2D blue native gel electrophoresis is found suitable for proteomic analysis of mitochondria proteins in which it could separate large amount of mitochondria proteins and large proportion of respiratory chain complexes as presented as the spots on the gel can be readily identified according to their position (Brookes et al., 2002). The functional associations between different respiratory complexes in mitochondria like cytochrome C, respiratory complexes III and IV can be interpreted from the gels. From this study, Brookes et al. (2002) suggested that the respiratory complexes are able to assemble into sub-complexes with limited functionality regardless of the presence of mtDNA encoded subunits.

Aristotles Nicomachean Ethics: Happiness :: Nicomachean Ethics Essays

From pursuing pleasure to avoiding pain, life seems to ultimately be about achieving happiness. However, how to define and obtain happiness has and continues to be a widely debated issue. In Nicomachean Ethics, Aristotle gives his view on happiness. Aristotle focuses particularly on how reason, our rational capacity, should help us recognize and pursue what will lead to happiness and the good life.';(Cooley and Powell, 459) He refers to the soul as a part of the human body and what its role is in pursuing true happiness and reaching a desirable end. Aristotle defines good'; as that which everything aims.(Aristotle, 459) Humans have an insatiable need to achieve goodness and eventual happiness. Sometimes the end that people aim for is the activity they perform, and other times the end is something we attempt to achieve by means of that activity. Aristotle claims that there must be some end since everything cannot be means to something else.(Aristotle, 460) In this case, there would b e nothing we would try to ultimately achieve and everything would be pointless. An ultimate end exists so that what we aim to achieve is attainable. Some people believe that the highest end is material and obvious (when a person is sick they seek health, and a poor person searches for wealth). Most people think that the highest end is a life of pleasure. Hedonists have defined happiness as " an equivalent to the totality of pleasurable or agreeable feeling.';(Fox, 3) Some pleasures are good and contribute to happiness. Not all ends are ultimate ends but the highest end would have to be something ultimate; the only conceivable ultimate end is happiness. Happiness is perhaps the only clear ultimate end. Happiness is what we strive for by itself and not to get anything else. "So it appears that happiness is the ultimate end and completely sufficient by itself. It is the end we seek in all we do.';(Aristotle, 461) Mans' good is related to his purpose; the purpose of a man involves the actions of his soul (the soul being a part of his reasoning). By carrying out the activities of his soul and doing so with proper excellence and virtue, man is able to reach a desirable end. Virtue, then deals with those feelings and actions in which it is wrong to go too far and wrong to fall too short but in which hitting the mean is praiseworthy and good†¦.

3 Basic Beliefs and Integrity Walmart Essay

Walmart was founded on three basic beliefs: service to our customers, respect for the individual and striving for excellence. Our adherence to these principles has created a unique work culture at Walmart. No matter where you go — to any of our stores and offices in any of our brands around the world — our associates live these values. * Service to our customers * Respect for the individual * Striving for excellence A Foundation of Integrity Our basic beliefs are built on a foundation of integrity — our values of honesty, fairness and objectivity guide how we apply these beliefs to the workplace. In other words, we strive to: * Be honest by telling the truth and keeping our word. * Be fair by using our business influence appropriately and creating an open environment for raising questions and concerns. * Be objective by making decisions based on Walmart’s interests, rather than personal interests, and by avoiding even the appearance of impropriety. 1. Service to Our Customers Every associate — from our CEO to our hourly associates in local stores — is reminded daily that our customers are why we’re here. We do our best every day to provide the greatest possible level of service to everyone we come in contact with. But what do we mean by service to our customers? * We serve our customers by making them our first priority. * We support our associates so they can best serve our customers. * We give to the local community in ways that connect to our customers. 2. Respect for the Individual From Walmart’s earliest days as a small discount store, we have emphasized the importance of respect for every associate, every customer and every member of the community. But how do we show respect for the individual? * We value and recognize the contributions of every associate. * We own what we do with a sense of urgency, and empower each other to do the same. * We communicate by listening to all associates and sharing ideas and information. 3. Striving for Excellence The key to our success is constantly looking for ways to improve ourselves and improve our business. We strive to lead not just our industry, but also each other to the next level of success. But how do we strive for excellence? * We innovate by trying new ways of doing things and improving every day. * We model a positive example as we pursue high expectations. * We work as a team by helping each other and asking for help. Business Model Value proposition Walmart’s value proposition is based on offering Everyday Low Price (EDLP). This is the core of Walmart’s Business Model, and the rest of the key features of Walmart’s Business Model are aligned to keep the everyday low price. This proposition implies that the customers do not need to wait for sales to have the best deal possible (Manning et al., 1998). Besides, not only the sells convenience is associated by providing the wide range of products and services to choose from, but also with one-stop is possible to make all the shopping needed, from groceries to pharmacy (Basker, 2007). Walmart’ customers save time and money. Distribution channel To deliver its value proposition Walmart communicates with and reaches its customer segments with its distribution channels which are owned and direct, and brings higher margin. Walmart also is corresponding with its customers mainly through mass media and other ways which have a low cost, such as internet. Customer relationships & Customer segment Walmart establishes a customer relationship is based on self-service and automated and towards co-creation of some products once it is possible. Walmart tends to reach to the mass market toward mass customisation. Walmart’s customers can be divided into three groups: â€Å"brand aspirations†, people with low incomes who are obsessed with brand; â€Å"price-sensitive effluents† wealthier shoppers who love deals; and finally â€Å"value-price shoppers† who like low prices and cannot afford much more (Barbaro, 2007). Key activities The key activities which are needed to run Walmart’s business model are: ï‚ · Purchasing goods ï‚ · Their delivery ï‚ · Total cost control Other activities would be to create products that will cover needs of a specific customer segment and to control the brand, which has been developing lately. Walmart’s technological edge is in its inventory control, logistics, and distribution (Basker, 2007). The ability to move products place to place quickly and efficiently keeps the costs down as well as the time system in combination with logistics force permits Walmart to have accurate time information of the products in the stores shelves that allows restocking automatically (Tierney, 2004). In addition the logistics involves the suppliers and workforce of 85000 employees, 147 far reaching distribution centers, transportation offices, more than 100.000 tractors and trailers and 8.000 drivers (Walmart logistics facts sheet). Key resources The key resources of Walmart classified in 3 categories. First, the physical resources which are owned by it like stores and logistics. Second its human resources, experienced managers and stores managers, and finally the company culture. Walmart culture is based on restless effort at constant self-improvement, discipline and loyalty (Fishman, 2006). Key partnership Key partnership is a strong buyer-supplier relationship in which suppliers were considered as close partners of Walmart. They also are part of the value chain of each other and it provides suppliers the chance of accessing to a large market. However it made suppliers, who wish to take advantages of its broad market, to keep their prices and costs low and therefore, suppliers give the control of their own business and negotiation advantage to Walmart (Parnell and Lester, 2008). Walmart also creates economies of scale that optimizes its cost structure. Revenue stream Walmart Revenue Streams that generated from its customer segments are basically come from retail sale, such as music downloading with fixed menu pricing. Walmart also drive revenue from selling its own brand, produces by others to cover a segment not cover by other suppliers. Moreover, it takes advantage of selling goods before paying to its suppliers. Cost structure The Cost structure is cost-driven model since it is focused on minimizing costs wherever it is possible and it is characterized by economies of scale. The expansion of Walmart allowed it to benefit from economies of scale and reducing its cost besides its technology let it to grow and caused to lower its costs; hence, economies of scale at both the chain levels and stores strengthen Walmart’s advantage, rather than being its root cause (Basker, 2007). Walmart’s financial discipline is well known as well as their tendency to pass operating costs to suppliers.

George Orwells

In this following essay from George Orwells 1984, you can expect to see that Big Brother is in many ways similar to numerous dictators, both past and present. As you read, you will be able to see the comparisons to Adolf Hitler, Nicolae Ceausescu and _______. 1984 by George Orwell is a story of a man's struggle against a totalitarianstic government that controls the ideas and thoughts of its citizens. They use advanced mind reading techniques to discover the thoughts of the people and punish those who show signs of rebellion against the government. The novel is supposed to be a prophetic story, however, it was somewhat wrong in the date. Although some of the things described in the book are going on today, several things are not going to happen for some time to come. I believe that Orwell's purpose for writing 1984 was to express his feelings of how the governments would come to control everything and anything it wished to do. It is also possible that he wanted t tell of how mind control and torture techniques could be used to make an individual or an entire nation do what the government wanted. In his novel Orwell used the image of a man who stood in a shadow that covered his face. This was to make him animas and unrecognizable. The figure was called "Big Brother" and this figure was placed on posters and put all over the place with the saying, "BIG BROTHER IS WATCHING YOU." This was used to let the people know that no matter where they go the could not escape the watching eyes of the controlling government. The government itself was very mysterious and had several parts that were very suspicious to the main character, Winston, who worked in one part of the government. It was divided up into four parts. The Ministry of Truth, where Winston worked, was in charge of education and the arts. The Ministry of Peace, which was in command of war. The Ministry of plenty, whi...

Model United Nations Essays - Free Essays, Term Papers

Model United Nations Essays - Free Essays, Term Papers Model United Nations PS 199D Fall 2006 Dr. Mary Pettenger Mondays, Wednesdays and Office: HSS 205 Fridays 11-11:50 Phone: (503)838-8301 Location: HSS 111 Email: [emailprotected] CRN #: 11032 Office Hours: M, W, F 10-10:50 M & F 2-2:50, and by appointment Web Page: www.wou.edu/~pettengm Course Description The Model United Nations (MUN) course is a unique class because it is a blend of student-managed club and academic course. Students are the primary decision-makers and leaders for the organization. By choosing to participate in this challenging but rewarding club, you will gain valuable knowledge and skills, and join a committed and highly motivated group of students. The purpose of Western Oregon University-MUN (WOUMUN) is to increase your knowledge about international issues, policy making and the activities of the United Nations. You will also gain valuable skills in public speaking, research and writing, negotiation and powers of persuasion, leadership, organization, and interpersonal communication. Students will gain these skills through course assignments, club activities and, most importantly, by playing the role of United Nations delegates at MUN conferences. You will have the opportunity to represent WOU as a MUN delegate at Model UN conferences locally, nationally and internationally. Students are responsible for attending classes, completing several assignments in preparation for MUN conferences, and to attend and participate in the local MUN-Cascadia (MUNC) conference. The instructor of the course fulfills the roles of faculty club advisor and course instructor, holding you responsible to complete the course requirements and to facilitate your learning by providing you with information to gain the necessary knowledge and skills. Ultimately, the benefits you receive from the course will come from your willingness to learn and contribute. Be aware that the time commitment of being a club member is great, but the rewards, if you are willing, are greater. Required Materials (1) Moore, Jr., John A. and Jerry Pubantz, 2006, The New United Nations: International Organization in the Twenty-first Century New Jersey: Pearson Prentice Hall. (Available in the bookstore) (2) United Nations, 2004, Basic Facts about the United Nations New York: United Nations Publications. (Available free to all class members) (3) MUN Delegate Handbook, several copies on reserve in the library. (4) UN Wire. You must subscribe to this free on-line publication at unwire.org/subscribe (5) Materials on Reserve in the Library and on the Internet (see the Projected Class Schedule for specific article titles and web sites) (6) UN Internet Resources, un.org and UN Document Source, http://unbisnet.un.org (7) A source of current event information (newspaper, television, internet, radio) pay particular attention to news related to the United Nations and country assignments. The following is a brief list of the many internet news sources that provide daily news and email updates: The New York Times nytimes.com The Washington Post washingtonpost.com The Christian Science Monitor http:/www.csmonitor.com/ The Economist economist.com/ CNN http://cnn.com Google News http://news.google.com Fall Quarter Activities (1) Conferences The main activity for the PS199 class will be preparation for and participation in the Model United Nations of Cascadia (MUNC) Conference November 10-12 in downtown Portland, hosted by Clark College. Further information will be provided in class. You must participate in this conference as part of the course requirements. (2) Fundraising Volunteers will participate in fundraising activities to collect money for conference expenses and support United Nations organizations (UNICEF, UN Day, etc.). (3) Club Meetings The MUN Club meets every Friday from 12:00-12:50 in HSS112. Attendance is strongly encouraged for class members and extra credit points can be earned. The Directorate of Western-MUN The WOUMUN is headed by a Student Directorate, which acts as the primary decision-making body with regard to the club matters. Directorate members and all other returning club members serve as valuable resources to new club members. Members-at-large will be selected the second week of classes. The 2006-2007 Directorate leaders are: President: Jesse O'Neil Vice-president: Genna Melton Treasurer: Patrick Eiser Secretary: Abby Stephens Laura Maddox is the Assistant Advisor to Dr. Pettenger. Mentors and Tutoring Sessions You will be assigned a mentor during the second week of class. Veteran Club Members will serve as resources to provide you training and information regarding conference preparation and performance. Starting the second week of class, tutoring sessions will be held one night a week. It is strongly suggested that you attend these sessions for tips on research, assistance in writing policy statements and resolutions. Each session is worth 5 points of extra credit. Testing Methods and Point Scale Successful completion of PS 199 will be based upon the following assignments. Students will be able to monitor their own progress through the course by

Maternal vitamin D and brain development Research Paper

Maternal vitamin D and brain development - Research Paper Example However, scientists are conducting further studies to find the maximum possible quantity of Vitamin D intake for pregnant and lactating mothers, while considering any possible side effects of its higher dose intake. Nevertheless, it is an established fact that this supplement helps in the development of skeletal and brain of the fetus, during pregnancy without any malfunction. While deficiency of Vitamin D is common in female population of countries with less sunshine, it is more evident in women with darker skin pigmentation.. In addition, research has found that 9.2 percent females are having such deficiency against the 6.6 percent males. The benefits of Vitamin D intake during pregnancy include helping in development of strong bone structure, as its deficiency results in reduced bone mineral content for the newborn. Chances of miscarriage are reduced with intake of Vitamin D that produces immunological changes in the mother, during early stages of pregnancy. In addition, medical research has found a link between Vitamin D and medical abnormalities like schizophrenia, as its deficiency can effect the normal brain development causing such kind of malfunction during adulthood.(Hollis & Wagner, 2014) Research has also collected evidence that Vitamin D intake during pregnancy can help in preventing the development of immunological diseases like asthma, wheezing, allergic infections, diabetes and respiratory tract infections, after the child grows into adulthood. Skull bones are also strengthened by the intake of this supplement as its deficiency means week skull bone structure that can cause brain injury at the time of delivery. Several epidemiological studies suggest that while Vitamin D deficiency is common in almost all pregnancies, it is more prevalent in black women, as they represent 29 percent of the total females having low intake of Vitamin D, against 5 percent of

Case memo Term Paper Example | Topics and Well Written Essays - 750 words

Case memo - Term Paper Example This strategy involves further research and development that will help the organization in maintaining a competitive advantage. The strategy entails giving loan and credit facilities to existing retailers that can embrace the use of low cost strategy. Since Benetton has been able to produce and market their products in an efficient way as compared to its competitors, then this strategy is appropriate for the organization. Additionally, their uniqueness and superior value to buyers gives them an advantage. This is evident with their united color scheme, quality of products among other special features of the organization. Opportunities The efficiency of the strategy is the reality that the retailers and licensees seeking support are familiar with the operations of the organization. Therefore, much of the resources will be directed towards giving support to the existing running businesses since they meet organizational goals and objectives. The productivity of employees is sufficient i n meeting customer demands. Furthermore, productivity is sustained due to the efficiency of capital and R&D collaboration. These elements are key measures that facilitate the high increase of profits for the Benetton. The quality of excellence shows that the organization has superior qualities because of their style, features and functions, design, level of service and aesthetic appeal of products. The reliability of the products has enabled consumers realize the value attributed to Benetton’s products. As such, the needs of customers are satisfied and hence, value is attributed to the product by the consumer of the product. Risks Apart from the opportunities, the external and internal risks involved in this strategy are the high level of imitators from competing organizations. This lowers the standards and quality of products produced. However, Benetton still has an advantage because the marketing strategy employed in the advertising of products covers this area. Therefore, the organization needs to ensure that other risks of selling at a lower market price are abolished. Current situation Currently, the organization has over 6000 stores sales and is listed in the stock market. This will mean that the company should engage in activities that are competitive because of high levels of competition. So far, the business is doing well, but needs to put in place measures that will assist it to attain sustainability and still be competitive in the market. The unique products assembled by the organization has enabled them maintain the majority of their customers. Additional support provided to retailers and licensees will enable Benetton to create differentiation and ultimately lead to a competitive advantage, which means higher customer response increases value of the product. For example, in Japan the group shows an increase in the number of stores in operation between 1986 and 1993. The profits and employees working in the organization has increased, which shows that the organization is running at a profit and is maximizing on the number of outlets available in order to foster values of products among consumers in a market niche. Recommendations In this instance, by providing additional support to the existing licensees or retailers strategy best suits the needs of Benetton because it matches with their goals and objectives. The input and output