Wednesday, January 29, 2020

Minerals and Energy Resources Essay Example for Free

Minerals and Energy Resources Essay We require metals for making machines, sands and gravels for making roads and buildings,  sand for making computer chips, limestone and gypsum for making concrete, clays for making ceramics, gold, silver, copper and aluminum for making electric circuits, and diamonds  and corundum (sapphire, ruby, emerald) for abrasives and jewelry. A mineral deposit is a volume of rock enriched in one or more materials. In this sense a mineral refers to a useful material, a definition that is different from the way we defined a mineral back in Chapter Here the word mineral can be any substance that comes from the Earth. Finding and exploiting mineral deposits requires the application of the principles of geology that you have learned throughout this course. Some minerals are used as they are found in the ground, i. e. they require no further processing or very little processing. For example gemstones, sand, gravel, and  salt (halite). Most minerals must be processed before they are used. For example: * Iron is the found in abundance in minerals, but the process of extracting iron from different minerals varies in cost depending on the mineral. It is least costly to extract the iron from oxide minerals like hematite (Fe2O3), magnetite (Fe3O4), or limonite [Fe(OH)]. Although iron also occurs in olivines, pyroxenes, amphiboles, and biotite, the concentration of iron in these minerals is less, and cost of extraction is increased because strong bonds between iron, silicon, and oxygen must be broken. * Aluminum is the third most abundant mineral in the Earths crust. It occurs in the most common minerals of the crust the feldspars (NaAlSi3O8, KalSi3O8, ; CaAl2Si2O8, but the cost of extracting the Aluminum from these minerals is high. Thus, deposits containing the mineral gibbsite [Al(OH)3], are usually sought. This explains why recycling of Aluminum is cost effective, since the Aluminum does not have to be separated from oxygen or silicon. Because such things as extraction costs, manpower costs, and energy costs vary with time and from country to country, what constitutes an  economically viable deposit  of minerals varies considerably in time and place. In general, the higher the concentration of the substance, the more economical it is to mine. Thus we define an ore as a mineral deposit from which one or more valuable substances can be extracted economically. Extraction of this oil also requires heating the rock and is therefore energy intensive and not currently cost effective Coal Coal  is a sedimentary/metanorphic rock produced in swamps where there is a large-scale accumulation of organic matter from plants. As the plants die they accumulate to first become peat. Compaction of the peat due to burial drives off   volatile components like water and methane, eventually producing a black- colored organic- rich coal called lignite. Further compaction and heating results in a more carbon- rich coal called bituminous coal. If the rock becomes metamorphosed, a high grade coal called anthracite is produced. However, if temperatures and pressures become extremely high, all of the carbon is converted to graphite. Graphite will burn only at high temperatures and is therefore not useful as an energy source. Anthracite coal produces the most energy when burned, with less energy produced by bituminous coal and lignite. Coal is found in beds called seams, usually ranging in thickness from 0. 5 to 3m, although some seams reach 30 m. Two major coal producing periods are known in geologic history. During the Carboniferous and Permian Periods, the continents were apparently located near the equator and covered by shallow seas. This type of environment favored the growth of vegetation and rapid burial to produce coal. Known reserves of coal far exceed those of other fossil fuels, and may be our best bet for an energy source of the future. Still, burning of the lower grades of coal, like lignite and bituminous coal produces large amounts of waste products that pollute the atmosphere. This problem needs to be overcome before we can further exploit this source of energy. Bottom of Form

Tuesday, January 21, 2020

Cinematography in Godfather the Movie Essay examples -- Film Mario Puz

Mario Puzo’s "The Godfather" was the first and most influential gangster movie that paved the way for gangster movies of the future. The movie was directed by Frances Ford Copolla, who made many different ingenious ways to portray this gangster classic. The movie was a very subversive movie, and one of the first of all time.The Godfather has a many different uses of light settings through the whole movie, in which the movie can be interpreted on. The lighting in "The Godfather," is very dim and is often said to be compared with a Rembrant. The lighting suggest many things throughout the film like a painting. The light scenes in the movie are to portray the Corleone family as good people, someone you could relate to not look down upon. Such as the wedding scene. The scene is very happy and bright, to make you start off to think that the Corleone’s are loving family, and family minded people. The dim light in the film is used to induce fear and death. Such as the scene where Don Corleone gets shot, or when Mike is going to kill the two people in the restaurant. The scene that contradicts the lighting theory is the heart attack of Don Corleone, but it could be look at as a happy time, a time of rebirth, Michael’s coming into power. "The Godfather," shows a tremendous amount of family values throughout the film. I think the best line in the film is when Don says to Mike " A man who does not spend time with his family is not a man." A good example of the Corleone’s family value...

Sunday, January 12, 2020

Bullying and Marsh Et Al Essay

Everyday thousand of teens wake up terrified of attending school. About one in seven schools, a child is either a bully or a victim of bullying. Bullying is simply defined as a type of aggressive behavior that involves intent to cause harm and a power imbalance (Olweus, 1999). Bullying can range anywhere from psychological, physical (involving kicking and punching), verbal or cyber abuse. Bullying among children can be considered as a form of abuse’ (0-). It has been put forward that bullying is a division of aggressive behavior and has been further characterized as repetitive and ‘an inability on behalf of the victim to defend him or herself’ (Farrington, 1993, cited it Sapouna, 2008). We learn from Sapouna (2008) that bullying can take the form of ‘verbal (name calling), physical (hitting, kicking) or relational (deliberate exclusion from a group, spreading of malicious rumors). After extensive research in Scandinavia, Olweus(1993, cited in Kumpulainen et al.,1998) proposed that bullying can be carried out by one or more adolescents and usually occurs on repeated occasions, and to some extent, it occurs in all schools. Recently bullying amongst young people has gain notoriety in the press due to the extreme results it has had on certain young individuals. An example of this is Sian Yates, a 13 year old girl who committed suicide after repeated bullying (Daily Mail, 2007). Despite the press attention given to these cases, the extreme consequence of suicide does not occur in the majority of cases. Victims can suffer from a range of harmful effects such as humiliation, anxiety, depression, difficulty with interpersonal relationships, and emotional instability. This lead to the finding of Kumpulainen et al., (1998) that ‘bullying is a common phenomenon among children who are psychologically disturbed.’ The writer went on to say that there are ‘higher rates of psychological distress among both bullies and victims’ than those not involve. However, the literature is consistent in noting that the ‘bullied victims are the most troubled of the bully, victim, bully –vict im triad’ (Juvonen et al., 2003; Ma, 2001; Pellegrini, 2002; Pellegrini et al., 1999;Salmivalli & Nieminen, 2002, cited in Cunningham, 2007). Should these lead agencies to focus more on protecting the victim? Some schools have decided that the way forward is to have zero tolerance policies. This may include all students who bully. However, if certain researcher’s numbers are correct it could mean excluding from school, forty percent of the school aged population. Given the widespread nature of the problem can zero tolerance really mean, â€Å"Zero tolerance†? We learn from the NHS ‘website teens for health’ (2008) that ‘anyone can be singled out by bullies.’ The NSPCC found that 31 per cent of children had been bullied at some point (Teens for health, 2008). This being the case, can anyone be bullied? Black and Jackson (2007) have put forward that there lies and ‘an imbalance of power’ between the parties involved in bullying. ‘The bully is stronger through social status, physical prowess, age, cognitive abilities or skill.’ Is this imbalance of power the sa me across the genders? There is an extensive body of literature that suggests that boys are more likely than girls to be bullies as well as victims (Nansel et al.2001; Boulton & Smith, 1994; Boulton & Underwood, 1992, cited in Marsh, Parada, Craven, &Finger, 2004). This doesn’t mean girls cannot be bullies. Stephenson and Smith (1989, cited in Kumpulainen et al., 1998) found that girls as well as boys fitted into the ‘five main groups of people involved in bullying’. These are: ‘dominating bullies, anxious bullies, bully-victims, classical victims, and provocative victims.’ These traits were also found by Sourander,Helstelà ¤, Helenius and Piha (2000) to have clinical implications. Sourander et al., (2000) noted that ‘Bullying is especially associated with aggressive and antisocial behavior while victimization is associated with internalizing problems.’ Whitney and Smith, (1989, cited in Kumpulainen et al., 1998) found ‘bullies to be more prone to have criminal convictions later in life, and more likely to be involved in serious, recidivist crime’. Are criminal convections later in life a fair punishment for their actions? Or should something be done to help the bully? This leads to the question as what is the nature of these young people that make them prone to being a victim or a bully. In the search for a personality construct, many researchers have come to the agreement that ‘bullies are deficient in social information processing or may be intellectually disadvantaged’ (Besag, 1989, cited in Marsh et al., 2004). The work of Crick and Dodge (1994, cited in Marsh et al., 2004) explained that bullies responses to social situations are being met with a filtration process. This ‘cognitive filter’ is based on an aggressive individual interpreting neutral or ambiguous cues as hostile and therefore, making them more likely to engage in aggressive behaviors’ (Marsh et al., 2004). This was also seen to be the case in Bosworth, Espelage, and Simon (1999, cited in Marsh et al., 2004) when ‘a sample of adolescent high school students showed that misconduct, anger, and beliefs supportive of violence were significantly related to bullying behaviors’. Although bullying is an aggressive act, this does not imply that bullies and aggressive or conduct-disordered individuals are a homogenous group. Sutton et al (1999, cited in Marsh, 2004) put forward that bullies were part of a complex environment where they are require to ‘negotiate and attribute mental states to themselves and others to explain or predict their behavior.’ This idea contravenes the notion that ‘bullies are cognitively inept or simple in their inte ractions with peers’ (Sutton et al 1999, cited in Marsh, 2004). References â€Å"Bullying†. Violence Prevention. 1 Dec. 2012 http://www.violencepreventionworks.org/public/olweus_history.page Dawkins, J. L. (1996). Bullying, physical disability and the pediatric patient. Developmental Medicine and Child Neurology, 38 603-612. Espelage, D. L., Holt M. K., & Henkel, R. R. (2003). Examination of peer group contextuals effects on aggressive behavior during early adolescence. Child development, 74, 205-220. Pelligrini, A. D. (2002) Bullying and victimization in schools: A Dominance relations perspective . Educational Psychologist, 37, 151-163.

Saturday, January 4, 2020

Outsourcing Of Manufacturing And Services Essay - 1237 Words

Literature Review Offshoring of manufacturing/services/innovation activities by advanced economies to China, India, or other countries. Introduction For years now it has been widely practised for large companies and firms to outsource manufacturing, services, and innovation activities to low-cost countries like China and India. However, while it may have always existed, it has only been in recent years that is has really started to take off. As discussed by Dossani and Kenney (2007, p.779), â€Å"in less than six years, offshoring of services has evolved from an exotic and risky strategy to a routine business decision.† The extent of this growth is having a huge effect on both emerging economies and advanced economies. According to Apte (2006), new product development is now the fastest growing offshoring segment in India. Advanced economies now have the ability to produce products at a far more productive and efficient rate than ever before. This also means that emerging economies can expand their own economies by having more people employed and paid. Unfortunately, many firms still have not taken advantage of this, and a s discussed by Waltz (2005) it’s the stability and quality of work that is often what discourages firms. Define, and identify the extent of offshoring Offshoring is the practice of basing some of a company s processes or services overseas, in order to take advantage of lower costs to be more efficient. This practise is rapidly taking off for various tasks,Show MoreRelatedThe term outsourcing refers to the act of contracting out business activities and procedures to a1300 Words   |  6 PagesThe term outsourcing refers to the act of contracting out business activities and procedures to a third party. The act of outsourcing sometimes involves the transfer of assets from one organization to the other. 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Outsourcing is currently relativelyRead MoreOutsourcing China Essay1024 Words   |  5 Pagesrecent years, Chinas service outsourcing have been expanding from scratch, and gradually expand the field, scope of business mainly related to Information Technology industry, producing services, as well as cultural and creative industries, the target involving Japan, Korea, Europe, America and India. In Shanghai, Beijing and other cities formed a group of outsourcing industry cluster, with significant economic benefits of international service outsourcing park; local outsourcing companies grew rapidlyRead MoreOutsourcing : Outsourcing And Outsourcing1579 Words   |  7 Pagesâ€Å"Outsourcing refers to obtaining certain services or pr oducts from a third party company, essentially sourcing something like accounting services or manufacturing of a certain input to another company. 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