Friday, August 28, 2020

The Internet Essay -- Computer Science

The Internet Essential Internet The web is a framework that permits you to play, tune in, read, send, get and download documents. The web is so natural to utilize and as I have broadband this urges me to utilize the web since I can generally depend on it being quick and acceptable quality. Numerous individuals utilize the web as a methods for staying in contact; E-Mail is extraordinary in light of the fact that you can write to individuals who might be over the opposite side of the world. You don’t even need to leave the solace of your own home. One of the best things about the web is the web crawlers. You type in what you are searching for it will think of a rundown of sites which will assist you with what you need to discover. How the web functions The web is comprised of systems (of all shapes and sizes). Systems are a gathering of PCs that are interconnected by phone wires (or on the other hand different methods) permitting the PCs to impart data to one another. Each system has a spines; spines, also called switches, What is fantastic about this procedure is that a message can leave one PC and travel most of the way over the world through a few extraordinary arranges and show up at another PC in a small amount of a second! The switches figure out where to send data from one PC to another. Switches are particular PCs that send your messages and those of each other Internet client speeding to their goals along a large number of pathways. A switch has two isolated, yet rel...

Saturday, August 22, 2020

The Challenges and Opportunities Facing Today’s Leaders and Managers free essay sample

All these will be talked about in detail in the accompanying report and all discoveries will be references in the references area toward the finish of the report. Meanings of Leaders/Leadership The individual who leads or orders a gathering, association, or nation. (Oxford University Press, 2013) Good pioneers are made not conceived. On the off chance that you have the craving and self control, you can turn into a viable pioneer. Great pioneers create through a ceaseless procedure of self-study, instruction, preparing, and experience (Jago, 1982). Pioneers do this procedure by applying their initiative information and abilities. This is called Process Leadership (Jago, 1982). In any case, we realize that we have characteristics that can impact our activities. This is called Trait Leadership (Jago, 1982), in that it was once basic to accept that pioneers were conceived as opposed to made. These two administration types are appeared in the outline underneath. Figure 1: Trait and Process Theory of initiative (Source: Clark, 2013) Definitions of Managers/Management An individual answerable for controlling or overseeing an association or gathering of staff. We will compose a custom paper test on The Challenges and Opportunities Facing Today’s Leaders and Managers or on the other hand any comparative point explicitly for you Don't WasteYour Time Recruit WRITER Just 13.90/page (Oxford University Press, 2013) A Manager is the individual liable for arranging and coordinating crafted by a gathering of people, checking their work, and making remedial move when fundamental. For some individuals, this is their initial step into an administration vocation. Chiefs may coordinate specialists legitimately or they may coordinate a few managers who direct the laborers. The administrator must be comfortable with crafted by all the gatherings he/she directs, however shouldn't be the best in any or the entirety of the zones. It is increasingly significant for the director to realize how to deal with the laborers than to realize how to accomplish their function admirably. This is a serious decent meaning of a director and to summarize it in one sentence cited from the Harvard Business school content: ‘A chief is somebody who gets results through other people’. At the point when we take a gander at the two in correlation we can see that initiative and the executives are both significant, however they look to do changed things. Some state that great administration is a higher priority than great administration; initiative and the board are pivotal variables that decide the company’s further turn of events. Viable pioneers will concentrate on your future and great directors will concentrate on your current activities. They are not something very similar but rather are likewise integral to one another. * The supervisor oversees, the pioneer enhances * The administrator is a duplicate, the pioneer is a unique. * The director keeps up, the pioneer creates Source: The Wall Street Journal, 2013) The difficulties and openings that face both in today’s world Being a powerful pioneer/supervisor is tied in with being somebody who shows others how its done. A director is somebody who essentially follows the activity objective. Today both must be solid communicators, it is indispensable that they comprehend the two-route nature of correspondence so they can support smart thoughts from representatives on an on-going premise. Perhaps the greatest test that they face is to lead an occasionally extremely various group to fill in as one unit in agreement while being profitable. I would contend that the capacity to organize even with trouble, clashing responses while simultaneously stay cool and ready to impart apparently the purposes for this prioritization are key difficulties confronted every day in such a post consistently. Some basic circumstances that call for pioneers and supervisors to utilize their assets include: * Public analysis, particularly clueless analysis, of your gathering or mission. * Flare-ups of others relational issues, either inside the gathering or outside it. Emergencies, which could be attached to accounts, program, governmental issues, advertising (outrages), legitimate concerns (claims), even otherworldly issues (loss of energy, low assurance). * Disasters. These are not the same as emergencies, in that, in an emergency, something significant (normally negative, however not generally) is by all accounts occurring, and youre attempting to control the circumstance. In a catastrophe, the most exceedingly awful has just occurred, and youre attempting to manage that here and there. * Opposition and additionally threatening vibe from amazing powers (business gatherings, neighborhood government, a persuasive association, and so on * A monetary or political bonus. Some of the time a surprising advantage can be more enthusiastically to deal with than a disaster. * Collaboration with another gathering or association may call upon a pioneer to characterize obviously the limits inside which he can work, and to adjust the necessities of his own gathering with those of the communitarian activity overall. * Dealing with remarkable and failing to meet expectations representatives, this will require a greater amount of your time and time you might not have anyway to keep either worker time must be given to them to develop and support into the job or another job in the organization. This is in no way, shape or form an extensive rundown, and most chiefs/pioneers will have the option to consider numerous different prospects from their own understanding. Its reasonable, notwithstanding, that they are frequently tried by outside occasions and individuals. What are a portion of the general systems they can use to adapt to these and other outside and in this way frequently flighty and wild conditions? (Berkowitz, 2013) Opportunities Maslow’s order of necessities Fredrick Herzberg’s inspirational hypothesis Hersey-Blanchard situational authority hypothesis Options What potential arrangements do they have? Various kinds of inspiration that could be actualized in this circumstance Do nothing as one alternative Evaluation Look at how to execute this Financial costs Complexity to prompt proposal What sort of Motivation would you pick and why? End Look at the more extensive picture and towards the future and where you could execute this in comparable circumstances later on. References Berkowitz, B. (2013). Perceiving the Challenges of Leadership. [On-line]. The Community tool compartment. Accessible from: http://ctb. ku. du/en/tablecontents/sub_section_main_1126. aspx [Accessed 25/05/2013]. Oxford University Press, (2013). Oxford Dictionaries. [On-line]. Oxford University Press. Accessible from: http://oxforddictionaries. com/definition/english/director [Accessed 25/05/2013]. Oxford University Press, (2013). Oxford Dictionaries. [On-line]. Oxford University Press. Accessible from: http://oxforddictionaries. com/definition/english/pioneer [Accessed 25/05/2013]. Jago, A. G. (1982). Administration: Perspectives in principle and research. The executives Science, 28(3), 315-336. Clark, D. 2013). Ideas of Leadership. A Big Dog, Little Dog and Knowledge Jump Production. [On-line]. Accessible from: http://www. nwlink. com/~donclark/pioneer/tight/trait_process_leadership. png [Accessed on 27/05/2013]. http://the board. about. com/od/policiesandprocedures/g/manager1. htm The Wall Street Journal. (2013). What is the Difference Between Management and Leadership?. [On-line]. Accessible from: http://guides. wsj. com/the board/creating an administration style/what-is-the-contrast among the board and-authority/[Accessed 25/05/2013].

Friday, August 21, 2020

International Success and Failures of Canada Goose Inc

Worldwide achievement Global interest for the company’s items is expanding each day. Item look into on Canada Goose Inc has demonstrated that advertise mindfulness in nations with comparable climate conditions is expanding in due time. The vast majority of the nations in Europe and particularly in Eastern Europe have comparable climate conditions like Canada.Advertising We will compose a custom research paper test on International Success and Failures of Canada Goose Inc explicitly for you for just $16.05 $11/page Learn More in such manner, clients in nations like Russia and the Scandinavian are currently acquainted with Canada Goose Inc items. Canada Goose Inc items prevalence is presently felt in the film enterprises, where the company’s cold outfits are favored during shooting in chilly regions. The way that the company’s retail business has extended in excess of 40 nations across Europe with central station in Sweden is empowering (Lorinc, 2012). The ongoing exchange commitment among Canada and global exchanging affiliations has been basic for the Canada Goose Inc worldwide achievement. The ongoing understanding among Canada and the European Free Trade affiliation (EFTA) is a case of how the organization is prevailing in global markets. The exchange understanding among Canada and the exchanging affiliation has seen the organization perform fantastically well in Iceland, Norway and Switzerland. Ease items from the organization are currently circulated and sold in Asia and the United States. Universal disappointments Cultural contrasts across potential market areas have come about to the disappointment of Canada Goose Inc in outside business sectors. From this point of view, the organization has been not able to build up an all inclusive brand picture that mirrors a typical association esteems. Canada Goose Inc has completely flopped in establishing copyright laws that forestall robbery and forging of items (Bitti, 2011). Canada Goose Inc has experienced enormously this universal issue particularly in Asia and in the United States. Additionally, the organization keeps on experiencing lost deals got from counterfeit items made by outside Asian organizations. There are worries that the organization has flopped in its worldwide command of watching basic entitlements as ordered by People for the Ethical Treatment of Animals (PETA). For instance, the organization has made plans to utilize coyote hide in assembling costly products.Advertising Looking for investigate paper on business financial aspects? How about we check whether we can support you! Get your first paper with 15% OFF Learn More The disappointment of Japanese parkas items is related with encroachment of fake items in the market. Thus, the dissemination organize in Japan failed to meet expectations in an unstable and serious market. As of late, the Japanese market has been overflowed by results of comparative plan with unique Canada Goose Inc items (Kopun, 20 13). Trademark encroachment isn't just normal in Japan, yet in addition in other European markets. The inability to keep up rising interest for Canada Goose Inc items has come about to trading off of the items quality. This can be prove by the expanding instances of fake items in the market. The organization has additionally neglected to keep up its market as prove by visit unavailable items. Canada Goose Inc is losing its market for absence of vital web use. By not using innovation in a period that vigorously relies upon web for data, the organization keeps on utilizing customary techniques in doing combating fakes (Wells, 2011). In addition, copyright laws contrast between nations making it hard for the organization to forestall item faking. Another global disappointment for Canada Goose Inc is its extended product offering for different seasons. This implies the organization is currently gambling wandering in remote markets in America, Asia and Europe. This pulls in hardened riva lry from other prestigious brands and may hazard the organization into budgetary obligations. Canada Goose Inc has bombed by under-contributing, in business correspondence, in business sectors with solid rivalry. References Bitti, M., T. (2011, July 19). Canada goose takes on forgers. Monetary Post, 1A. Kopun, F. (2013). Canada goose sues Sears over parka plan. Web.Advertising We will compose a custom research paper test on International Success and Failures of Canada Goose Inc explicitly for you for just $16.05 $11/page Learn More Lorinc, J. (2012). The brilliant goose. Web. Wells, W. (2011, November 7). Canada goose hostile to forging system key to securing brand. Monetary Post, 1A. This examination paper on International Success and Failures of Canada Goose Inc was composed and presented by client Elisha Foster to help you with your own investigations. You are allowed to utilize it for research and reference purposes so as to compose your own paper; nonetheless, you should refer to it in like manner. You can give your paper here.

Tuesday, May 26, 2020

Unbiased Report Exposes the Unanswered Questions on University of Maryland Transfer Essay Samples

Unbiased Report Exposes the Unanswered Questions on University of Maryland Transfer Essay Samples Inside my opinion, a thriving student is somebody who wants not just to learn but also to make something new. You do not have to resend official standardized test scores, unless you've retaken the exams. Writing a good college admission essay requires a lot of creativity. Knowing if you have to compose an essay early on can help you keep a strict calendar of deadlines. The question is the one most important consideration because it's the bridge from preparation to writing. This section has two examples of fantastic college essays. For quite a few, the toughest portion of the application procedure is writing the admission essay, and attempting to choose a topic when everything around you seems so uncertain can acquire stressful. The objective is to flesh out all your possible ideas, so whenever you get started writing you know and understand where you're going with the topic. I f this growth is interrupted with constant responsibilities and complaints about how those responsibilities aren't being handled in the most suitable way, the entire process is disrupted. Since that time, my role has developed. On the other hand, the activity led me to understand the significance of teamwork. Transferring is a multi-step procedure, and staying organized is vital. The Rise of University of Maryland Transfer Essay Samples The number one thing transfer admission counselors wish to be aware of is the reason you're transferring. Choosing our service, you are going to realize that studying can be simple if you gain from the help of competent experts. The truth is my college doesn't have any facility like that, but I want to study physics in more detail. What our parents and elders don't understand is that we're still young and inexperienced. You are going to be evaluated for admission in a competitive pool of different applicants for the very same semester. Your admission essay gives you the chance to personalize your program, and admission committees can learn about your leadership abilities and character. After the variety of students desiring admission exceeds the number that could be accommodated in a distinct professional or specialized program, admission will be determined by criteria developed by the university to choose the best-qualified students. When you see fill-in-the-blanks such as these, it's simple to presume that admissions is searching for a particular reaction. You may also reach out to a particular counselor on the transfer team. I understand they will have the ability to use these tools to continue to be successful. This is the way we describe our team in summary. I'd received the maximum grade on the team. It is very important to differentiate the activities of the College and do the analysis in line with the industry segment it's currently represented in. The essay supplies you with the chance to showcase elements of your nature and experiences that fit nicely with the University of Maryland community. This region of the response is a fantastic chance to demonstrate your understanding of UIUC-specific programs. Do a little research on their site about the different sorts of initiatives and service groups on campus. New Questions About University of Maryland Transfer Essay Samples You should have your reasons, and our principal concern is that you wind up getting a great grade. Read the question clearly and make sure that you understand what's being asked of you. So try to do your best, regardless of the little space you're given, to answer all sections of this question. In reality, have a whole 2 day break from taking a look at anything linked to your application and arrive b ack to look for errors. Get the Scoop on University of Maryland Transfer Essay Samples Before You're Too Late Official transcripts from every college or university you've attended are required as a member of your transfer application. At present, applicants who have attended Maryland public institutions could be admitted in line with the criteria outlined in the prior paragraph. We advise that you finish your application at least 1 week before the necessary deadline. Notre Dame retains first-year and transfer applications so you'll only must send documents which you did not submit as part of your preceding application. If you're interested in becoming a member of MTAP, you must submit our on-line application by the correct deadline. If you've applied for Transfer admission within the last two years, your preceding application materials will be contained in your new file. The document could be written in free form, but it's better if the author utilizes the particular structure. Submit any extra application materials.

Friday, May 15, 2020

Number of Supreme Court Nominees By President - List

President Barack Obama successfully chose two members of the U.S. Supreme Court and has a chance to nominate a third before his term ends after 2016. If hes able to push a candidate through what can be a politically charged and sometimes lengthy nomination process, Obama will have chosen a third of the nine-member court. So how rare is that? How many times has a modern president gotten an opportunity to choose three justices? Which presidents have nominated the most Supreme Court justices and had the largest impact on makeup of the highest court in the land? Here are some questions and answers about the number of Supreme Court nominees by president. How did Obama get the chance to nominate three justices? Obama was able to nominate three justices because two members of the Supreme Court retired and a third died in office. The first retirement, that of  Justice David Souter, came a short time after Obama took office in 2009. Obamas chose Sonia Sotomayor, who later become the first Hispanic member and third woman justice to serve on the high court. A year later, in 2010, Justice John Paul Stevens gave up his seat on the court. Obama picked Elena Kagan, a former Harvard Law School dean and solicitor general of the United States who was widely seen as a consensus-building liberal. In February 2016, Justice Antonin Scalia died unexpectedly. Is It Rare For a President to Get to Nominate Three Justices? Actually, no. Its not that rare. Since 1869, the year Congress increased the number of justices to nine, 12 of the 24 presidents preceding Obama successfully chose at least three members of the Supreme Court. The most recent president to get three justices on the high court was Ronald Reagan, from 1981 through 1988. In fact, one of those nominees, Justice Anthony Kennedy, was confirmed in a presidential-election year, 1988. So Why Were Obamas 3 Nominees Such a Big Deal? That Obama had the opportunity to nominee three Supreme Court justices was not, in an of itself, the big story. The timing — his final 11 months in office — and the impact his choice would have on setting the ideological course on the court for decades to come made his third nomination such a big news story and, of course, a political battle for the ages. Related Story: What Are Obamas Chances of Replacing Scalia? Which President Has Chosen the Most Supreme Court Justices? President Franklin Delano Roosevelt got eight of his nominees on the Supreme Court over the course of just six years in office. The only presidents who have come close are  Dwight Eisenhower, William Taft and  Ulysses Grant, whom each got five nominees on the court. So How Does Obamas 3 Picks Compare to Other Presidents? With three picks for the Supreme Court, Obama is exactly average. The 25 presidents since 1869 have gotten 75 nominees on the high court, meaning the average is three justices per president. So Obama falls right in the middle. Here is a list of presidents and the number of their Supreme Court nominees who made it to the court since 1869. The list is ranked from presidents with the most justices to those with the least. Franklin Roosevelt: 8 Dwight Eisenhower: 5 William Taft: 5 Ulysses Grant: 5 Richard Nixon: 4 Harry Truman: 4 Warren Harding: 4 Benjamin Harrison: 4 Grover Cleveland: 4 Ronald Reagan: 3 Herbert Hoover: 3 Woodrow Wilson: 3 Theodore Roosevelt: 3 Barack Obama: 2* George W. Bush: 2 Bill Clinton: 2 George H.W. Bush: 2 Lyndon Johnson: 2 John F. Kennedy: 2 Chester Arthur: 2 Rutherford Hayes: 2 Gerald Ford: 1 Calvin Coolidge: 1 William McKinley: 1 James Garfield: 1 * Obama has not yet nominated a third justice, and it remains uncertain whether his choice will will confirmation.

Wednesday, May 6, 2020

Personality Psychology Social Relationships And...

Personality psychology aims to describe what the key features of personality are as a means to explain why people exhibit differences in their personality. This can, in turn, be used to examine the relationship between personality and the actions and behaviours of individuals. The focus of this paper is the analysis of Steve’s case based on his behaviour, social relationships and childhood experiences. Four theories are considered in the analysis of Steve’s personality and how it affects the way he forms relationships. Freud’s topographical model is used to describe why Steve’s behaviour is sex driven. Horney’s personality development and anxiety concepts are used to explain Steve’s fixation with sex and to determine the origin of his disturbed interpersonal relationships. Finally, Ainsworth and Bowlby’s attachment theory is used examine how the parent-child relationship influences personality as well as how expectations about rela tionships are formed based on experiences with parents. Topographical model Freud’s psychoanalytical approach emphasized the unconscious workings of the mind when explaining human behavior. Freud divided personality into three areas: conscious, preconscious, and unconscious. This became the topographical model. He explained that the conscious portion is made up of the thoughts a person is aware of. The preconscious portion is made of accessible and retrievable information, and the unconscious is made up of information that has no immediateShow MoreRelatedThe Persistence Of Temperament And Personality1469 Words   |  6 PagesTemperament and Personality. 12. October. 2015 Abstract This paper will explore the topic of temperament and personality in developmental psychology. I will provide definitions, statistics and examples to explain what temperament is then following what personality is. After drawing the connection between temperament and personality I will conclude that although temperament is the building block to what results a person’s personality it does not mean personality is unchangeableRead MorePersonality Is A Definition Of Personality1483 Words   |  6 PagesPersonality is a word that is known to come from the Latin word persona which is defined as the ‘mask’. The definition of personality is quite eclectic as there are many opinions on what a personality is and what it consists of. â€Å"†¦the most adequate conceptualisation of a person’s behaviour in all its detail† (McClelland, 1951, p.69) is a historical definition of personality. More narrowly, personality is described as the amalgamation of qualities or characteristics and the behavioural attitudes thatRead MoreErik Erikson s Explanation Of Psychosocial Development1504 Words   |  7 Pagesexplanation of psychosocial development is one of the best-known theories of personality in psychology. The term psychosocial development is the pattern of change in emotions, personality and social relationship (â€Å"A Child’s World† 10). Erikson believed that the achievements and failures of earlier stages influence later stages, whereas later stages change and transform earlier ones. His theory shows the impact on social relationships throughout one’s entire life. Each individual goes through eight developmentalRead MoreAssess the Strengths and Weaknesses of the Psychodynamic Approach to Understanding Personality1681 Words   |  7 PagesStrengths and Weaknesses of the Psychodynamic approach to understanding personality The psychodynamic approach was proposed by Freud. This approach towards personality is based on the notion of underlying forces such as the id, ego and superego which are either present from birth or develop during childhood shape our behaviour and personality as such. Experiences in childhood are proposed to be the basis of human personality, according to Freud and as such Psychodynamic theory proposes that someRead MoreInfluences of Attachment Theory on Personality Development 1148 Words   |  5 PagesThe concepts proposed by attachment theory have been very influential to the field of personality psychology. Over the years, many studies have supported the notion that mother-child attachment styles during childhood can impact future styles of behavior. Research conducted by Festa and Ginsburg (2011) examined the impact of parental and peer factors on the development of social anxiety amongst children. Further research conducted by Li and Chan (2012) examined the specific impact o f anxiety andRead MorePersonality: Genetically Inherited or Developed Essay1004 Words   |  5 PagesThe foremost differentiation between human beings lies within an individual’s personality. A person’s personality lies in the individual’s general profile or within the unique mixture of psychological qualities of character that relates to that individuals distinctive nature. The individual’s distinctive mixture of psychological aspect guides the way in which that specific human being reacts and interacts with the others or their surroundings. Ones character contains a set of mental distinctivenessRead MorePathological Psychology : Abnormal Psychology1204 Words   |  5 Pagesconduct that goes against what is classified as ordinary in society. The study of this sort of behavior is abnormal psychology. Abnormal psychology focuses on atypical sequences of conduct, feelings, and ideas. Since disorders are any form of interruption in the methodical functioni ng of an individual, it can be viewed upon as abnormal. A branched area of abnormal psychology includes personality disorders, which indicates a mental disturbance. These particular types of disorders lead to a fixed form ofRead MoreThe Child That Lives From Within1681 Words   |  7 PagesAHSS 1210 21 November 2014 The Child that Lives from Within Introduction The social sciences often question if psychopathic behaviour is innate or a product of a social environment. Recently, nurture-based theories has gained credibility in understanding how a child’s upbringings can trigger psychopathic behaviour. In the movie Psycho by Alfred Hitchcock, Norman Bates’ downfall proposes how crucial a healthy childhood is to mental health rather than biological vulnerability. Contrary to nature-focusedRead MoreThe Child That Lives From Within1611 Words   |  7 PagesAHSS 1210 21 November 2014 The Child that Lives from Within The social sciences often question if psychopathic behaviour is innate or a product of social environment. The answer seems difficult to discern because it is not split down into equal parts of nurture and nature, but rather rely on one another for a better understanding. In the movie Psycho by Alfred Hitchcock, Norman Bates’ downfall proposes how crucial a healthy childhood is to the mental state of developing child. Contrary to nature focusedRead MoreErik Erikson s Theory Of Psychosocial Development1359 Words   |  6 Pagesvery important. Erik Erikson’s developmental theory is the development of a person’s identity. Erikson states, â€Å"The conscience sense of self that is developed through social interaction.† Erik Erikson was a psychoanalyst who believed that, on an â€Å"unconscious level, we form basic beliefs about ourselves and our relationship to our social world as we go through life† says an online article. Erikson was a German – born, â€Å"American developmental psychologist,† who was known for his theory of psychosocial

Tuesday, May 5, 2020

Chemistry free essay sample

# 8211 ; Bonding Essay, Research Paper Electron Pair Repulsion Theory: The negatron brace repulsive force theory provinces that the negatron brace in the valency energy degree of an atom repel each other, and hence are arranged as far apart as possible. For illustration, H2O: Due to this theory, different molecules with different sums of braces of negatrons have different forms. Shapes of Molecules: Some common forms of molecules include additive, rhombohedral planar, tetrahedral, rhombohedral pyramidal and v-shaped ( set ) molecules. Examples are drawn below- a ) linear ( CO2 ) B ) tetrahedral ( CH4 ) degree Celsiuss ) v-shaped/bent ( H2O ) vitamin D ) rhombohedral planar ( BF3 ) vitamin E ) trigonal pyramidal ( NH3 ) The negatron point diagrams must be drawn foremost in order to work out the form of the molecule. Molecular Mutual opposition: The mutual opposition can be determined from the form of the molecule. In kernel, a molecule is polar if there is an overall electronegativity difference in the molecule. | Across a Period| Down a Group| Ionization energy| Increases| Decreases| Atomic radius| Decreases| Increases| Melting point/boiling point| Increase in metals, and then decrease in gases| Increase| Valency| Increases| Stays the same according to group number| Electronegativity| Increases| Decreases| Reactivity | Decreases| Increases| Extraction of Metals * The ease of extraction depends on the reactivity of the element. The less reactive, the easier. * A mineral is any pure crystalline compound that occurs in the Earth’s crust, and is considered an ore if it is economically viable to extract a substance from the mineral. * The cost of metals is also important when choosing appropriate metals. * Less abundant ores are generally more expensive Some metals are expensive to extract from their ores (aluminium requires electrolysis, and is therefore more expensive then iron or copper) * Cost of transportation – ores found in remote areas require extensive, and sometimes specialized transport * The yield is the amount of a product as a percentage of what is scientifically expected, and is important because it is critical when determining whether a mining or industrial venture is economically viable. * Eg. With a reaction of copper (I) sulfide with oxygen, the expected amount of copper is 2. 33 tonnes, but it is only 1. 97 tonnes. Therefore the yield is: 1. 972. 3 x 100 = 85% * The extraction of copper from sulfide ores (chalcopyrite CuFeS2): * Concentration through froth flotation, where air is blown through tiny jets into a detergent solution, forming froth. The detergent means the sulfide particles are un-wettable and therefore will not be drawn into the bubbles. (2-25% Cu) * Heat the ore with sand, leaving Cu2S, producing the immiscible liquids of copper (I) sulfide, and the unwanted iron. This is known as smelting, where the substances are heated to high temperatures to form a molten material to extract a metal. 2CuFS2(s) + 5O2(g) 2Cu(l) + 2FeO(s) + 4SO2(g)