The Guitar Essays - String Instruments, Guitar, Fingerboard, Fret

The Guitar THE HISTORY OF THE GUITAR The guitar is a fretted, stringed instrument, and is a member of the lute family. It originated in Persia and reached Spain during the twelth-century, where it?s versatility as both a solo and accompanying instrument were established. The theory of the guitar was discovered in the early centuries. They found that the sound of a bowstring could be enhanced by attaching a resonating chamber -most like a tortiseshell- to the bow. From the bow came essentially three main types of stringed instruments: the Harp family, which was the sound of plucked strings indirectly transmitted to an attached sound box. The second was the Lyre family, which was strings of a fixed pitch are attached to the directly to a sound chamber. And the third was the Lute family, this was were the pitch of strings was altered by pressing them against a neck that is attached directly to a sound chamber. Within the Lute family came two groups. The lutes proper which had rounded backs and the guitar type instruments w ith their flat backs. Guitar-shaped instruments appear in stone bas-relief sculptures of the hittites in northern Syria and Asia Minor from as far back as 1350 B.C. The word guitar also has origins in the middle and far east, deriving from gut, is the Arabic word for four, and tar, the Sanskrit word for string. The earliest European guitars did have four courses of gut strings. A 2 course is a pair of strings tuned in unison. These early guitars were distinguished from lutes by body sides that curved inward to form a waist and by four courses of strings. Some but not all early guitars had a flat back, while lutes always had a flat back. In the Middle Ages and the Renaissance the lute was the dominant fretted instrument. The lute with was pear-shaped and had five or more courses of strings was generally regarded as a higher class of instrument. By 1546 the guitar had gained enough popularity to merit the publication of a book of guitar music. By this time guitars had added another course, and modern tuning had come into existence. Chord positions were the same as they are today. The frets of the early guitars were made of gut and tied around the neck. This made placement of frets very difficult. The early guitars were also much shorter in length than todays guitars. The second most popular instrument during the Middle ages was the cittern. It was more like the modern guitar than any other during that time. It had metal strings, fixed frets, a fingerboard that extended onto the top, a flat back, and a movable bridge with strings anchored by a tailpiece; and it was played with a quill or plectrum(pick). But this modern instrument soon lost its popularity and disappeared by the late 1600?s. Through the 1600?s and 1700?s the guitar design changed very little, although interest increased around luthiers. In the 1770?s the first guitars with six single strings appeared, 3 blowing the evolutionary lid off the instrument. Within the next few decades, numerous innovations followed: body waists became narrower and body bouts changed shape, becoming circular in northern Europe and more oval shaped in southern Europe. Inlaid frets of brass or ivory replaced the tied on gut frets and the neck was extended one full octave(12 frets) clear of the body. Metal tuners with machine heads began to replace friction pegs, and strings were anchored by bridge pins, replacing the method of tying strings to the bridge. By the 1820?s most of the fingerboard extended all the way to the soundhole. As rapidly as the guitar changed so did it?s acceptance. By the 1800?s the Lute had all but disappeared. One of the best known makers of this new-style of guitar was Johann Georg Staufer of Vienna. Staufer and another maker Johann Ertel in 1822 designed a fingerboard raised off the top of the guitar, and experimented with different fret metals, settling on an alloy of brass,copper,silver, and arsenic. The first half of the 19th century was a time of great experimentation for the guitar. And many of the innovations that were credited to 20th century makers were actually tried

Profit and Prophet - Commonly Confused Words

Profit and Prophet - Commonly Confused Words The noun profit means a benefit, an advantageous gain, or a return on an investment. As a verb, profit means to derive advantage or to gain a profit. The noun prophet refers to a person who speaks by divine inspiration, a person with powers of prediction, or a chief spokesperson for a cause or movement. Examples Globalization has favored the pursuit of profit and the accumulation of private wealth over the provision of public goods.(George Soros, The Bubble of American Supremacy, 2004)Even while Shakespeare was alive, a few unscrupulous writers and publishers tried to profit from his reputation.(Jack Lynch, Becoming Shakespeare, 2007)Because ​Bob Dylan wrote and sang about improving society, some young people in the 1960s saw him as a prophet of change.I felt . . . like some crazy Old Testament prophet going out into the desert to live on locusts and alkali water because God had summoned him in a dream.(Stephen King, Bag of Bones, 1998) Practice Exercises (a) There was another part of Henry Wallace, no less important and certainly no less serious, that was known to few and fully understood by nobody. This was Wallace the mystic, the _____, the ardent seeker of cosmic truth. (John C. Culver and John Hyde, American Dreamer: The Life and Times of Henry A. Wallace, 2000)(b) Some of the bureaucrats were actually quite clever, and played the game well, sometimes even making a _____ on their trades and transactions.(Tom Clancy, The Bear and the Dragon, 2000)(c) I hope Im smart enough and mature enough to _____ from the mistakes I made in the past.(Julia Reed, The House on First Street, 2008) Answers to Practice Exercises:  Profit and Prophet (a) There was another part of Henry Wallace, no less important and certainly no less serious, that was known to few and fully understood by nobody. This was Wallace the mystic, the  prophet, the ardent seeker of cosmic truth.(John C. Culver and John Hyde,  American Dreamer: The Life and Times of Henry A. Wallace, 2000)(b) Some of the bureaucrats were actually quite clever, and played the game well, sometimes even making a  profit  on their trades and transactions.(Tom Clancy,  The Bear and the Dragon, 2000)(c) I hope Im smart enough and mature enough to  profit  from the mistakes I made in the past.(Julia Reed,  The House on First Street, 2008)

Childrens misconceptions in mathematics Essay Example | Topics and Well Written Essays - 1500 words

Childrens misconceptions in mathematics - Essay Example By recognizing the weak points of students and then immediately working on those weak areas is an important task. Usually teachers do help their students by only telling them that where actually they are lacking. This is not a correct way to help a student. Every student requires special kind of attention and they can only gain that particular attention by taking help from their supervisors or teachers. There are different kinds of misconceptions. Some students find difficulty while solving mathematical related problems, while some students face problems while solving geometrical parts, while there are some students who face a lot of problems while working on digits. (Fischbein, page 225, 1987) For instance some children will for sure blind that 3.27 is bigger than 7.6 because its got more digits. But why? Because during the first few years of their education, they only come across the whole numbers where the digits rule and value does work. They only know that if there are more digits then the figure is the bigger one. This is one of the biggest misconceptions which most of the students have and their teachers are also not focusing on this misconception. One of the biggest flaw which we have in our learning society is that we usually teach our students in a wrong way when they are in their growing age. Students when are in their growing age needs more attention and what so ever they will be taught will be in their mind forever. Therefore it is very much important to know that how actually students are being taught at their beginning age. If we look at another example, there are many students who face a lot of problems while recognizing the shapes. This is only because at their beginning age they were taught that shapes can be easily recognized when teacher draw four sided square or a triangle or an isosceles triangle. But then if those shapes are drawn in different direction, students usually find it difficult to

Postmodernism in Preciousness, Endgame, and The Simpsons Essay

Postmodernism in Preciousness, Endgame, and The Simpsons - Essay Example Lispector allowed the reader to be a part of the text in stating in the beginning of the chapter that: â€Å"And within the mist there was something precious. Which do not extend itself, did not compromise itself nor contaminate itself. Which was intense like a jewel. Herself† (102). Another textual example in the chapter is when Lispector described the reality after the character passed through her imaginative scenes. She described it as: â€Å"When suddenly everything became unimportant and more rapid and light, where her face revealed freckles, her hair fell over her eyes, and where she was treated like a boy† (105). The character disappeared, and the reader became a part of the text as the character’s environment became real again. Lastly, the presence of the reader appeared as she â€Å"dressed hastily and downed her coffee in one gulp. She opened the front door. And then she no longer hurried† (107). This is a manifestation of the duality of silence in Lispector’s work, which is a character of a postmodernist literary artist. This dual structure is a character of her fiction that adds tension to the texts while creating the contextual silence on her works (Fitz 421). In relation to playwrights, postmodernism can be defined as the manner of standing out from the current rules. In this manner, the playwright, along with the artist, works without following the rules because they create the rules while creating the piece per se (Counsell and Wolf 55). It deviates from the usual realism and is considered as an important part of the pre-World War II plays that manifest metaplays. With this on hand, one of the best examples of postmodernist play is the Endgame written by Samuel Beckett. According to Keshavarz, as a postmodernist play, the characters in the Endgame represent a natural form of sadness (140). He presents a modern status of a person who fears and leans on a goddess with bitterness, doubt and indifference. On the ot her hand, it represents the modernity of a selfless person who lacks the stability of his identity but still manifests social awareness. On the part of the audience, Beckett deviates the ideas and views of the audience from the formal work of dram and injecting postmodernism by bringing the audience in the middle of reality and real-play. He believes in the notion of metatheater that the world is a stage. In this manner, the audiences become characters of the play while experiencing the experience of the characters that they have chosen to be. It can be inferred that postmodernism, in the light of the Endgame, tries to eliminate the potential characters of modernism that alienates reality from theater, or vice versa. Therefore, the Endgame eliminates the rules of basic drama and theater and allows rebuilds it in a manner that the play can be grasp juxtaposition with life itself. The postmodernism manner in the Endgame can also be considered as a literary strategy by Beckett by destr oying the irony of a parody (Keshavaraz 140-142; Rahimipoor and Edoyan 102). In the light of television shows, one of the most popular and long-running postmodern shows is The Simpsons. One of the most explicit characteristics of

Professional Interview Research Paper Example | Topics and Well Written Essays - 750 words

Professional Interview - Research Paper Example Authors such as Reilly (2012) have established a relationship between effective leadership and the success in business systems in a country. The author argues that knowledge and skills in a country, which can empower leadership, are significant to the country’s economic development. Leadership roles exist at different levels at which decision-makers offer their professionalism (Nabli, 2011). To facilitate the study of leadership capacity in Nigeria, this essay will focus on an interview response from a Nigerian professional, ‘Usman Olaide’ who is a Senior Client Service Consultant and a Business Development Executive at Field Communication Ltd. The interview focuses on the role of leadership in promoting crises and leadership strategies for preventing or managing crises when they occur in the Nigerian business environment. Consequently, it will be possible to evaluate any impacts of the leadership that exists to the business crisis in this country. Usman identifie s the role of leadership in integrating different industries in the corporate sector for accountability in management because observed crises in the Nigeria’s business environment results from negligent actions from single industries or organizations and spread to affect the entire economy. Referring to Martin Oluba’s analysis of the equity market crisis (N.d.) and her experience in sources of crises in the Nigerian business environment, Usman explains that industries are interrelated and poor leadership in one industry, leading to a crisis in the industry, affects other industry’s performance. The finance industry is the most significance because it is the center of power for circulation of money across other industries as was observed in the equity market crisis. While poor leadership in the equity market led to its crisis, Usman explains that the move by the industry’s players to seek funds from private holdings influenced businesses in other sectors t o seek similar targets for rescue and culminated into the crisis. In her analysis of the scenario that is a perfect example of the role of weak leadership in business crisis, the interviewee argues that regulatory framework, both legal and moral, should be put in place to ensure credible and competent centralized leaderships that can preempt crisis in their respective industries and develop preventive measures. She also argues that a collaborative initiative among leaders from respective industries in regulating activities and risks in each industry can also play an effective role in containing crises from spreading to other industries, should such crises occur in a given industry (Usman, O, personal communication, August 16, 2013). Usman also argues that leadership offered by relevant government agencies play a significant role in management of financial crises in the Nigerian corporate environment. Agencies whose roles relate to macroeconomic aspects such as the Central Bank of Ni geria must be explicit in their roles to guide corporate operations and regulate the economic environment for stability. She explains that poor decisions on factors such as interest rates and consequences in high inflation rates are detrimental to businesses and the central bank should develop effective strategies for economic stability. The interviewee also relates such government regulations to the sensitive finance sector that has potential effects on other sectors and industry. In agreement with John, Adaeze, Soni, and Onoriode

Effects of Radiation in Biological Systems

Effects of Radiation in Biological Systems As stated in the oxford concise colour medical dictionary radiobiology is the branch of science dealing with the effects of radiation on biological systems. It is further stated that a sequence of events that deals with the absorption of energy from ionizing radiation to the efforts of the organism in order to compensate for the effects of this energy absorption and the damage to the organism that may be produced. There are a number of topics of study in radiobiology. The effect of ionizing radiation together with how it affects living cells will be further explained. Bushong (1998:29-32) states that the biologic effects of ionizing radiation represent the efforts of living things to deal with energy absorbed by them, after an interaction with such radiation. Maintained by the author it is stated that when ionizing radiation interacts with a cell, ionization and excitations are produced in either critical biologic macromolecule called targets e.g. DND, or in the medium which cellular organelles are suspended eg. Water. Based on the site of these interactions, it can be classified as either direct or indirect. The effects of radiation on living cells vary, depending on the type, intensity of exposure and the cell as discussed by Tubiana and Dutreix (1990:22). Radiation is an emission of ionising radiation. Maintained by the above authors, at low levels, radiation damage can be repaired by living cells with no effects, however, higher doses leas to sterility, mutation, which confuses cells resulting in the reproducing rapidly cell death. Cell damage can result in two ways namely direct radiation action, which harms molecules directly and indirect, by ionizing molecules turning them into toxic compounds causing damage. Some of the other aspects that are going to be discussed and explained below are cell structure, cycle and death; irradiation of cells; direct and indirect effects of radiation; interactions of gamma rays with matter; foetal irradiation; cell survival curves; properties of cell survival curves; therapeutic implications; oxygen effect; factors influencing oxygen effect; the five Rs of radiobiology and lastly radiation protection. CELL STRUCTURE, CELL CYCLE CELL DEATH: Discussed by Ford (2001:5) Atoms form molecules which make macromolecules, then build complex organic structures, and then cell which are the main structural component of tissues as well as reflects all features of life. They have similar structures but specialize according to their location. Cells contain inorganic compounds as well as organic compounds. Henry and Suntharalingam (2006:12) explain that there are two categories of cells namely prokaryotic and eukaryotic. Maintained by the above author . Prokaryotic cells have no nucleus and are surrounded with a nuclear membrane. They do not contain any membranous organelles e.g. Mitochondria. However. On the other hand, eukaryotic cells have membranous organelles as well as a real nucleus. They are more highly developed compared to prokaryotic cells. The cell cycle is defined as the interval between the midpoint of mitosis in a cell and the midpoint of the subsequent mitosis in both daughter cells according to Millar and Levine (1998:102). Maintained by the above authors it describes the stages through which a cell passes through as it replicates. The length of time a cell may take to complete the cell cycle is highly variable. The basic division of the cell cycle is mitosis and interphase. Cells may also be in a special state known as the resting phase when not making any effort to divide and cells in this phase are mostly terminally differentiated cells. According to Tubianna and Dutreix (1990:86) the M phase is the period where the cell actively divides into two daughter cells. There are two related events namely mitosis and cytokinesis. The synthesis and mitosis of the cell cycle are separate by two gaps, G1 and G2 when respectively, DNA has not been synthesised or DNA has been synthesised but other metabolic processes are taking place. Elizabeth (2003:1) explains that cells are generally most radio-sensitive in the mitosis and G2 phases and most radio-resistant in the late S phase. Maintained by the above author Cytokinesis completes the M phase, however cells do not always undergo cytokinesis, instead forming multinucleate giant cells. This can either be normal or can be due to errors in mitosis. Explained by Tubiana and Dutreix (1990: 89) Cell death of static cells is defined as the loss of specific function. For stem cells and other cells capable of many divisions, cell death is defined as the loss of reproductive integrity (reproductive death).the above authors further explain that when cells are exposed to ionising radiation, the biological effects of radiation results mainly from damage to the DNA, however there are also other sites within the cell that, when damaged may lead to cell death. The capability of a single cell to grow into a large colony shows that the cell has retained its reproductive integrity. IRRADIATION OF CELLS: Elizabeth (2003:10) explains that when cells are exposed to ionizing radiation the standard physical effects between radiation and the atoms or molecules of the cell. The biological effects of radiation result mainly from damage to the DNA; however, there are also other sites within the cell that, when damaged, may lead to cell deaths occur. Maintained by the above author a surviving cell that maintains its reproductive integrity and proliferates almost indefinitely into a large number of progeny is said to be clonogenic. Sensitive component for radiation-induced cell killing rests in the cell nucleus and not in the cytoplasm. When ionizing radiation is directly absorbed in biological material, the damage to the cell may occur in either a direct or indirect mechanism. DIRECT INDIRECT EFFECT OF RADIATION: According to Bomford and Kunkler (2006: 265) in direct action, the radiation interacts directly with the critical target in the cell. The atoms of the target itself may be ionized or excited, leading to the chain of physical and chemical events that eventually produce the biological damage. It is the dominant process in the interaction of high linear energy transfer particles such as neutrons or alpha particles with biological material. In direct action, caused by x-ray or gamma ray photons, the photon interaction with an atom in the cell produces a charged particle (electron) which subsequently interacts with DNA directly as discussed by Hendry and Suntharalingam (2006:24). Hall and giaccia (2006:44) explain that in indirect action, the radiation interacts with other molecules and atoms (mainly water) within the cell to produce free radicals which can, through diffusion in the cell, damage the critical target within the cell. It can be modified by chemical sensitizers of radiation protectors. Further explained by the above authors, Basic radiochemical reactions that may occur in water molecules disrupt by the passing of an ionizing particle which are highly reactive species that are produced in water, through the radiochemical reactions. These reactive species bring about the indirect radiation damage to biological systems by reacting and damaging the molecules in the cell. The free radicals that break the chemical bonds and produce chemical changes that lead to biologclcal damage are highly reactive molecules because they have an unpaired valence electron. About two-thirds of the biological damage by low linear energy transfer radiations e.g. X-rays , is due to indirect action and one-third due to direct action. INTERACTIONS OF GAMMA RAYS WITH MATTER: Discussed by Johnston and Fauber (2012:63)The steps involved in producing biological damage by the indirect action of x-rays are the primary photon interaction which includes he photoelectric effect, Compton scatter and pair production produces a high energy electron, high energy light charged particle in moving through tissue produces free radicals in water. Maintained by the above author the free radicals may produce chemical changes in DNA from the breakage of chemical bonds and the changes in the chemical bonds results in biological effects. FOETAL IRRADIATION: According to Isaac (2009:26) Foetal radiation is known as teratogen (causes birth defects). Between conception and birth, the foetus passes through different stages of development. When a mother is pregnant, the unborn child can be harmed by radiation which could result in the child having cancer and genetic defects. Due to the fact that the foetus would be highly sensitive to radiation, they are rapidly dividing, undifferentiated and have a long mitotic future. Elizabeth, M (2003:16) a human embryo exposed to a large amount of radiation before 2-3 weeks of gestation could result in a miscarriage. 4-11 weeks could result in severe abnormalities of organs and 11-15 weeks in mental retardation. However, after the 20th week, the human foetus is more radiosensitive and functional defects may occur. Effects of radiation on the foetus depends on two factors namely the dose to the foetus and secondly is the stage of development at the time of exposure. An important factor to note is that an abortion should be considered only when the foetal dose has exceeded 10 cGY. The principle effects of radiation on a foetus are foetal or neonatal death, malformations, growth retardation, congenital defects and cancer induction as maintained by the above author. CELL SURVIVAL CURVES: Discussed by Hall and Giacca (2006: 67) Cell survival curves which is the surviving fraction against the absorbed dose describes the relationship between the surviving fractions of cells that is the fraction of irradiated cells that maintain their integrity. Maintained by the above author, the cell survival against dose is graphically represented by plotting the surviving fraction on a logarithmic scale on the ordinate against dose on a linear scale. Typical survival curves for cells irradiate by densely ionizing radiation (low linear energy transfer). Tubiana and Dutreix (1990: 26) the type of radiation influence the shape of the survival curve. For densely ionizing radiation (high linear energy transfer) the cell survival curve is almost an exponential function of dose which is shown by an almost straight line on a log-linear plot. However, for sparsely ionizing radiation (low linear energy transfer) the survival curves show an initial slope followed by a shoulder region and then becoming nearly straight at high doses as retained by the above authors. The currently used model for describing the cell survival curve is the linear-quadratic model with constants Alpha and Beta. The ratio alpha/beta gives the dose at which the linear and quadratic components of cell killing are equal. PROPERTIES OF CELL SURVIVAL CURVES: Adhikar (2003:2) explains that for late responding tissues the survival curves are more curved than those for early responding tissues. For early effects the ratio is large and dominates at low doses however for late effects it is small and has an influence at doses lower than for early responding tissues. The above mentioned author goes on to explain that the effects of radiation on tissue as a function of dose are measured with assays and the measured results are presented in the form of cell survival curves and dose response curves. THERAPUTIC IMPLICATIONS: Bomford and Kunkler (2003:99) state that DNA being the target of ionizing radiation leads to several important therapeutic implications. The radiation damage that occurs in clusters that match the size of a DNA strand may be more effective in causing damage. The above authors further explain that drugs target DNA have synergistic effects with radiation whilst people with genetic defects due to radiation damage response may exhibit increased levels of DNA mutation or cell death. Points in cell cycle where the DNA is more susceptible to damage are also more sensitive to radiation and the cycling of cells has an impact on the radio sensitivity of the cell type. OXYGEN EFFECT: Franckowiak (2008:2) explains that when ionizing radiations transverse through matter, they gradually loose energy through various interaction processes along their path. For certain absorbers the rate of energy loss depends on the type of radiation as well as the density of the material. Maintained by the above author the rate at which energy is deposited as a charged particle travels through matter by a particular type of radiation is known as linear energy transfer which is a function of the mass and charge of the radiation. Carlton and Adler (2006:344) explain that Electromagnetic radiation, having no mass or charge produces fast electrons with negligible mass and a negative charge. Due to this, the probability of an electron interacting with an atom is relatively small resulting in the ionizations produced being distant and far from each other hence terming electromagnetic radiation as linear energy transfer radiation. In contrast to electromagnetic radiation, highly ionizing radiations e.g. Alpha-particles that have a predictable mass, have a greater chance of interacting with matter, producing short distance ionizations. Different linear energy transfer radiations produce different degrees of the same biologic response. However, equal doses of linear energy transfer do not produce the same biologic response. This was retained by the above authors. Travis (1989:207) explains that the ability of radiation with different linear energy transfers produce a specific biologic response called the relative biologic effect. It is a comparison of a dose of test radiation that produces the same biological response. Maintained by the above author ,when comparing the two types of radiation that differ in nature or energy, the relative biological effectiveness when compared, represents the absorbed dose which results in a given biological effect. Therefore the concept must refer to a well-defined biological effect of a particular level. FACTORS INFLUENCING OXYGEN EFFECT: Ford (2001:10) discusses that some of the factors that influence the oxygen effect are chemical, biological and technical. In chemical, the oxygen concentration may be increased by internal or external methods. In biological, if the patient suffers from chronic airways disease or other problems with oxygen transport, then the oxygen concentration will be lower and prevalence of hypoxic cells will be increased. However, in technical, these have minimal impact on the oxygen effect, maintained by the above author. THE FIVE RS OF RADIOBIOLOGY: Bomford and Kunkler (2003:236) explain that there are five Rs in the radiotherapy process namely; repair, redistribution, reoxygenation, repopulation and lastly radio sensitivity and these will be further explained below. REPAIR: This is one of the primary reasons to fractionate radiotherapy and there are three types of damage that ionizing radiation can cause to cells. These are lethal, sub lethal and potentially lethal damages. Maintained by the above authors, by splitting radiation dose into smaller parts cells are allowed to repair sub lethal damage depending on the ability to recognize damage, repair pathways and cell cycle arrest. However, normal cells with intact repair pathways are able to repair the sub lethal damage by the time the next fraction is delivered. However, if the dose rate is sufficiently low, repair may be able to take place during radiotherapy treatment which reduces the cell death and is one reason low dose treatment show reduces effectiveness to high dose rate treatment as stated by Isaac (2009:20). REDISTRIBUTION: Sunthalingam and Hendry (2006:12) state that redistribution occurs during low dose rate which may increase cell killing, although it is minimal compare to the increased repair. When radiotherapy is given to a population of cells, they may be in different parts of the cell cycle. A small dose of radiation delivered over a short time period will kill a lot of sensitive cells and less of the resistant cells. REOXYGENATION: Oxygenation status may change during treatment due to tumours being acutely or chronically hypoxic. Acute hypoxia is due to the closure of capillaries or arterioles supplying parts of the tumour. While closed, tumour cells become hypoxic and resistant to the indirect action of radiation. These vessels are usually closed for a short time but may occur during a fractionated dose of radiation. Splitting dose into fractions raises possibility of closed vessels being opened the next time, hence allowing the tumour cells to be killed as explained by Sunthalingam and Hendry (2006:13). Maintained by the above authors, chronic hypoxia is due to the poor vasculature of tumours and oxygen has to travel far to reach cells that are far. These cells are resistant to radiation, fractionated radiation therapy kills cells that lie close to capillary more effectively thus being able to move closer to their nutrition source becoming relatively toxic and these cells can be killed. REPOPULATION: Bomford and Kunler (2003:237) explain that repopulation is the increase in cell division that is seen in normal and malignant cells at some point after radiation is delivered. Repopulation of normal tissues occurs at different speeds depending on the tissue. Maintained by the above authors, early responding tissues begin repopulation and by increasing treatment over a certain time period reduces early toxicity in that tissue. However late responding tissue only begin repopulation after the radiation cause has being completed and therefore repopulation has minimal effects. Adhikar (2003:4) explains that repopulation of malignant tissues are when some tumours exhibit accelerated repopulation which is a dangerous phenomenon that must be counted if treatment time extends. Methods to do this include accelerated treatment with hyper fractionation to minimise late effects. RADIOSENSITIVITY: Radio sensitivity cells include haematological cell. Radio resistant cells include myocytes, neurons and tumour cells such as melanoma and sarcoma as explained by Adhikar (2003:4). RADIATION PROTECTION: As discussed by Carlton and Adler (2006: 153-155) there are three principles of personnel exposure reduction namely time distance and shielding. A decrease in time working with or in the vicinity of radiation will increase exposure and decrease the dose. Maintained by the above author increasing the distance between the source of radiation and the individual will decrease exposure. Bushong (1998:54) also mentions that shielding decreases the exposure that is used when time and distance cannot be implemented. Examples of shielding are gonad shields, lead aprons, lead line doors etc. CONCLUSION: As we all know now know, radiobiology deals with the effects of radiation in biological systems. Radiation is energy in the form of waves and particles that are emitted from a source that comes in many forms however it may not always be a dangerous thing. The forms of radiation that are especially dangerous to living things are those with energy sufficient to penetrate tissues and then ionize the atoms they pass along the way which damage tissues by disrupting normal cellular chemistry and are mutagenic and carcinogenic. Cell damage can result in two ways namely direct radiation action, which harms molecules directly and indirect, by ionizing molecules turning them into toxic compounds causing damage. Discussed above and throughout the assignment we see how a cell together with their structure until death occurs due to irradiation of cells by either direct or indirect effects of radiation. We also looked at interactions of gamma rays with matter as well as effects of foetal irradiation. Cell survival curves together with their properties as well as theraputic implications and oxygen effect were explained. The five Rs in radiobiology play an important aspect together with ways of protecting yourself and others from the harmful effects of radiation.

The History and Evolution of the Juvenile Justice System Essay

The history of the juvenile justice system is a mixture of the criminal justice system, family court, child protective services, social services, orphanages, adoption and humanitarian growth. (Schmalleger, 2007) Where a child fit into the system would depend on the crime, family pedigree, financial standing, color and social status. Children of color would be treated harsher than whites, Indian children were treated worse than African American Children, and status was determined by the color of your skin. Children of color would be given a death sentence before a white child and those with financial means could buy a pardon or parole. (Hopkins, 2008) From America’s beginning we modeled our criminal codes and punishments after England’s. England did not make allowances for the age or maturity of an offender, punishments ranged from flogging, mutilation, branding, public humiliation (stockades), work houses, exile and other forms of torture and every person was subject to them no matter the age; we carried this tradition with us to the colonies. (Roberson, 2007) In the nineteenth century we began what I feel is more of a social services program that was in fact an attack on the poor but the juvenile system calls the child-saving movement. This movement focused on the dangerousness and immorality that was believed to go hand in hand with being underprivileged. The â€Å"House of Refuge† that were privately or community funded opened in New York in 1825; (Larry J. Siegel, 2008) it was believed to be a family environment but was in fact a work house and functioned much like the later industrial prisons (1890-193 5) that fell out of favor because of the economic impact on the U.S. economy. (Schmalleger, 2007)pg. 490) Americans were mu... ...ved January 2, 2011, from ExecutedToday.com: http://www.executedtoday.com/2008/12/20/1786-hannah-ocuish-age-12/ Larry J. Siegel, B. C. (2008). Juvenile Corrections. In B. C. Larry J. Siegel, Juvenile Delinquency The Core, third edition (pp. 336-368). Belmont: Thomson Wadsworth. Larry J. Siegel, B. C. (2008). The History and Development of Juvenile Justice. In B. C. Larry J. Siegel, Juvenile Delinquency The Core, third edition (pp. 259-283). Belmont: Thomson Wadsworth. National Orphan Train Complex. (n.d.). Frequently Asked Questions. Retrieved January 9, 2011, from National Orphan Train Complex: http://www.orphantraindepot.com/FrequentlyAskedQuestions.html Roberson, W. S. (2007). Procedures in the Justice System. Upper Saddle River: Pearson Prentice Hall. Schmalleger, F. (2007). Criminal Justice Today, ninth edition. Upper Saddle River: Pearson Prentice Hall.

High-Risk Family Assessment and Health Promotion Essay

High-Risk Families A high-risk family is a family unit that is at an increased risk for emotional, intellectual, or developmental problem because of the type of environment or circumstances that is occurring within the family unit. Adults and children that are involved in these high-risk family units are at a higher risk to develop problems, both physically and emotionally. There are many indicators for early detection of risk factors: neighborhood environment, poverty, poor kept homes, characteristics of adults present in the home, marital problems, and child neglect. There are many programs and interventions that can be implemented to try to change the negative effects and ensure a positive outcome within the family unit. History of Teen Pregnancy According to Furstenberg, Brooks-Gunn & Chase-Lansdale (1989), in an article titled Teenaged Pregnancy and Childbearing, teen pregnancy did not become prevalent until the 1960s. Two changes occurred contributing to the increase in teenage pregnancies: 1.) an increase in sexual activity of young girls and 2.) a decrease in the number of teenage marriages. By the 1980s over half of white females and three-fourths of black females were sexually active by the age of 18 (Furstenberg, Brooks-Gunn & Chase-Lansdale, 1989). Contraception was not regularly used when having sexual relations, and many of these females became pregnant during their teen years. Furstenberg, Brooks-Gunn & Chase-Lansdale (1989), also continue to say that compared to the number of unmarried teenage females in 1950 the females of 1980s were two-thirds white and almost 97% black single females. Also, 40% of these teenage pregnancies would end with abortion, and that the younger teenagers would have more abortions. A pre gnant teenager has many decisions to make regarding her future: 1.) future schooling 2.) relationship with the  baby’s father 3.) family’s support 4.) peer’s support. Summary of the Health Profile of a Pregnant Teen The risk of some teenagers getting pregnant is high in some circumstances. There are many life situations that place teenage girls at a risk of becoming pregnant. These may include poor school performance, sexual abuse, poverty, being raised by a single parent household, having a mother who was an teenager mother, or having a sister who has become pregnant at a young age. According to Saewyc, Magee & Pettingell, (2004) the risk of a teenager getting pregnant is increased if that teenager has been sexually abused. The pregnancy is because they have been sexually abused they have a feeling of powerlessness which can lead to impairment when it comes to using a contraceptive (Saewyc, Magee & Pettingell, 2004). Also, if the teenager has been sexually abused then they may have a higher chance of substance abuse and running away from home (Saewyc, Magee & Pettingell, 2004). Substance abuse can lead the risk for multiple partners, unprotected sex, and turning to sex work in order to support their habit. Many teenagers feel that they are under pressure to have sexual relations. Peer pressure, bullying, and teasing by friends can lead to sexual intercourse at a much earlier age. Also, being allowed to date at an early age can lead to pregnancy, especially if the individual they are sleeping with refuses to use contraception. There are many social and cultural changes that have occurred regarding dating. Getting to know a person over a long period, or courting, is no longer part of dating. Couples now move onto physical relationships much quicker, and sex is part of the relationship. Poor education and low achievement levels in school can lead to unwanted pregnancies. Teenagers who drop out of school are more likely to become pregnant and not complete their education. Teens that get pregnant tend to come from more disadvantaged families than those who do not become pregnant. Being of lower income contributes to a low hope of possible financial success which usually leads to choices of short-term contentment, having a  baby while they are young and unmarried. Orem’s Self-Care Model Dorothea Orem published the Concepts of Nursing in 1971 and the sixth publication in 2001. According to Sitzman & Eichelberger, (2011), â€Å"Orem’s Self-Care Model describes a structure where the nurse assists the client, as needed, to maintain an adequate level of self-care. The degree of nursing care and interventions depend on the degree to which the client is able (or unable) to meet self-care needs† (p. 96). Orem’s general theory is in three parts: 1.) theory of self-care 2.) theory of self-care deficit 3.) theory of nursing system (Chitty, 2005, p. 283). The theory of self-care focuses on patient’s self-care capacities. The theory of self-care deficits specifies when nursing care is needed. Orem identifies five methods of helping: 1.) acting for and doing for others 2.) guiding others 3.) supporting others 4.) providing an environment promoting personal development in relations to meeting future demands 5.) teaching another (Orem, 2001 as cited in M asters, 2011, p. 183). The theory of nursing system describes the responsibilities and roles of the nurse and patient, the reason for the nurse-patient relationship, and the types of interventions needed to be provided to meet the patient’s needs. The theoretical framework of Orem’s theory as it relates to the metaparadigm for nursing is based on the person, a nurse, environment, and health. Nursing is the ability to assist patients to provide and manage self-care to improve and maintain human function at some level. Health is not only taking care of the body but is also how a person performs with daily activities of living and progressing toward higher levels of functioning. Environment includes four features: 1.) physical 2.) chemical 3.) biological 4.) social (Orem, 2001 as cited in Masters, 2011, p. 183). The environment has an impact on the individual’s health and well-being. Finally, persons are human beings who are different from other living beings. Human beings can reflect, symbolize, and use symbols. The person is a patient whom the nurse cares for. Orem’s theory can be applied to all three levels of prevention: primary, secondary, and tertiary. Every person needing nursing care has requirements at the primary level of prevention. Secondary prevention is required after the onset of illness and is directed toward reducing complications and disability. Tertiary care is appropriate when functioning is limited. Dorothea Orem’s  theory provides a widespread foundation to the nursing practice and is specific to when nursing care is needed. Orem’s theory can be applied can be applied to various age groups including teenage mothers of newborns. The self-care deficit theory of nursing is useful with teenage mothers of newborns. The theory will focus on the strengths and/or weaknesses of the individual. Methods of help and interventions include teaching, guiding, and providing for and/or maintaining direction in an environment that supports personal development. Healthy People 2020 Objectives According to Healthy People 2020 goals are to improve pregnancy planning and spacing, and prevent unintended pregnancy. Reducing pregnancies among adolescent females aged 15 to 17 years, reducing the number of pregnancies conceived within 18 months of a previous birth, increasing the number of both males and females who have never had sexual intercourse, increasing the number of sexually active persons who use condoms to both effectively prevent pregnancy and provide barrier protection against disease, and increase the number of adolescents who received formal instruction on reproductive health topics before they are 18 years old are all applicable objectives related to teenage pregnancy (â€Å"Family planning,†). There are many nursing interventions that are applicable for prevention of teen pregnancies. Nursing education that includes teaching about contraception, abstinence, and having schools administer condoms through the health office. Interventions can also include designing and presenting programs that includes parent-teen communication with their parent(s), while promoting abstinence and the proper use of contraception. According to Furstenberg, Brooks-Gunn & Chase-Lansdale (1989) there have been efforts made to prevent teen pregnancies. According to the Panel on Adolescent Pregnancy and Childbearing primary prevention, delaying sexual activity, and using contraception is where all efforts should be focused on for prevention (Furstenberg, Brooks-Gunn & Chase-Lansdale, 1989). Primary prevention programs include: 1.) educating teens about sexuality and contraception 2.) changing attitudes about early sexual involvement and 3) providing contraceptives and family planning (Furstenberg, Brooks-Gunn & Chase-Lansdale, 1989). Role of the Advanced Practice Nurse as a Case Manager Advanced Practice Nurses have the education, training, and skills to perform many of the primary-care duties performed by physicians. Advanced Practice Nurse Case Manager carries out advanced practice functions and develops functions that help to achieve the best results for the client through valuable interactions with clients. The Advanced Practice Nurse will manage and coordinate care for the pregnant teenagers and their families, provide health education, teach self-care behaviors, and offer psychosocial counseling and support, assess the efficacy of the health care system, and assist and monitor improvement ideas of the health care system. Conclusion Teenage pregnancy has been a major problem facing our children since the 1950s. Teen parents are less likely to finish school, more likely to live in poverty, more likely to have babies with low-birth weights and more likely to have children who become teenage mothers themselves. The goals of the health educator should include changing the behavior, providing counseling services, primary and preventative health care, and family educations. For the future, all teens should be aware of the risks involved of sexual intercourse and be educated on the ways to prevent pregnancies. Reference Chitty, K. K. (2005). Professional nursing, concepts & challenges. W B Saunders Co. Family planning. (n.d.). Retrieved from http://www.healthypeople.gov/2020/topicsobjectives2020/overview.aspx?topicId=13 Furstenberg, F. F., Jr., Brooks-Gunn, J., & Chase-Lansdale, L. (1989). Teenaged pregnancy and childbearing. American Psychologist, 44(2), 313-320. doi:http://dx.doi.org/10.1037/0003-066X.44.2.313 Masters, K. (2011). Nursing theories, a framework for professional practice. Sudbury, MA: Jones & Bartlett Publishers. Saewyc, E. M., Magee, L. L., & Pettingell, S. E. (2004). Teenage pregnancy and associated risk behaviors among sexually abused adolescents. Perspectives on Sexual and Reproductive Health, 36(3), Retrieved from https://www.guttmacher.org/pubs/journals/3609804.html Sitzman, K., & Eichelberger, L. W. (2011). Understanding the work of nurse theorists, a creative beginning (2nd ed.). Sudbury, MA: Jones & Bartlett Learning.

Chemistry Coursework Essay Example

Chemistry Coursework Essay Example Chemistry Coursework Essay Chemistry Coursework Essay The reactivity series is a chart showing the order that metals react with other substances. This reactivity series was determined by carrying out experiments to see how each metal reacts. The reactions are done with air, water and dilute acid.The reactivity series:Potassium (k)Sodium (Na)Calcium (Cl)Magnesium (Mg)Aluminum (Al)(Carbon)Zinc (Zn)Iron (Fe)Lead (Pb)(Hydrogen)Copper (Cu)Silver (Ag)Gold (Au)Platinum (Pt)Metals extracted by electrolysis.Metals extracted by using reduction with carbon (carbon monoxide)These metals dont react with water or acid.Exothermic and Endothermic reactions:In an exothermic reaction heat is given OUT. An exothermic reaction is one which gives out energy to the surroundings, usually in the form of heat and usually shown by a rise in temperature. For example burning fuels obviously gives out heat making it exothermic.In an endothermic reaction heat is taken IN. An endothermic reaction is one which takes in energy from the surroundings, usually in the form of heat and usually shown in a fall of temperature. For example dissolving certain salts in water.During a chemical reaction old bonds are broken and new ones are made.Energy must be supplied to break bonds so this is an ENDOTHERMIC process.Energy releasedNa Cl Na + ClStrong bond Bond brokenEnergy is released when new bonds are formed so this is an EXOTHERMIC process.Mg + O Mg O + energyIf the energy released in bond formation is greater than the energy used in breaking old bonds, the reaction is EXOTHERMIC.If the energy required to break old bonds is greater than the energy released when the bonds are formed, the reaction is ENDOTHERMIC.Enthalpy profilesENDOTHERMICExothermicTheoryThe reactivity of a metal is related to how easily it can lose its outer shell electronsM-2e MThe more reactive the metal he easier this process is so it takes less energy. All of the displacement reactions are exothermic reactions so the Energy going out is larger than the energy coming in. The enthalpy profiles show the energy coming in (1), the energy out (2) and how exothermic/endothermic the overall reaction was (2)-(1)=(3).The energy being taken in is the energy required to break the bonds + the energy required to do: M-2e M .The energy coming out is the energy from the forming bonds + energy from: Cu +2e Cu.Most of these energies stay the same because the metals are displacing copper. The only significant change as I add the different metals will be the energy it takes to do M-2e M . Therefore the most reactive metal will need less energy to remove electrons.Key Factors/VariablesKey factors or variables can be changed that would make a difference to the reactions or results taking place. These are:; Amount of copper sulphate solution-use more or less. It needs to be in a certain amount as it could either be too dangerous or not cause a good reaction; Moles of metal-this might change the speed of the reaction or the amount of heat given off.; Type of solution-using a different solution could make the reactions stronger or weaker.; Type of metal-using different types of metals could show more results.; Different concentration of solution (stronger/weaker); Whether it is stirred- could change the speed of the reactionPredictionI think that given the information I know I would guess that magnesium would let out the most thermal energy because it is the most reactive metal I am experimenting with. The higher the metal in the reactivity series the higher the amount of thermal energy given out.PreliminaryMethod:A 50th of a mole of magnesium, iron, lead and zinc was measured out. The temperature of the copper sulphate was taken before any experiments were started. Then 10cm3 of solution was put into 3 different test tubes and the metals were added. The concentrations were stirred and a thermometer was placed in each test tube and the highest temperature was taken and recorded. The experiment was repeated 2 more times so an average could be taken for accuracy.Fa ir TestTo make sure that the experiments done are fair these things need to be taken into consideration:; Same amount of moles of metal.; Same amount of concentration of copper sulphate.; Same amount of times stirred.; Same concentration (copper sulphate).; Same metals (zinc, magnesium, iron and lead); The temperature of the room where the experiments are taking place.; The starting temperature of the thermometers.Do more reactive metals give more exothermic reactions in their displacement reactions with copper sulphate solution less reactive metals?Aim: To investigate if the reactivity of a metal affects how exothermic its reaction with copper sulphate solution (displacement reaction).Apparatus; 12 boiling tubes; Scales; Spatula; Calculator; Powdered Lead (s), Magnesium (s), Zinc (s), Iron (s); 3 Thermometers; Copper sulphate (aq) solution.; Measuring cylinder.; Test tube rackMethod1/50th of a mole of each metal was measured out. 12 boiling tubes were put out in test tube racks eac h with 10cm3 of copper sulphate solution in. Before any of the experiments were taken out the temperature of the solutions were taken. Then 4.14g (1/50th of a mole) of lead were added to the copper sulphate solution. The solution was stirred 5 times. The highest temperature was taken. Then 0.48g (1/50th of a mole) of magnesium were added to the solution and stirred 5 times, the highest temperature was taken. Then 1.12g (1/50th of a mole) of iron were added and stirred 5 times, the highest temperature was taken. The same was done with 1.3g (1/50th of a mole) of zinc. All of the temperatures were recorded. All of the experiments were repeated two more times for accurate readings.Workings out:Lead: Iron:Mass number = 207 Mass number = 561/50th = 1?50 = 50 1/50th = 1?50 = 50207?50 = 4.14g 56?50 = 1.12gMagnesium: Zinc:Mass number = 24 Mass number = 651/50th = 1?50 = 50 1/50th = 1?50 = 5024?50 = 0.48g 65?50 = 1.3gResults:Lead:21 21 21 Starting temp22 25 23 Highest tempBoiling tube 1 Boi ling tube 2 Boiling tube 3Magnesium:21 21 21 Starting temp87 82 83 Highest tempBoiling tube 1 Boiling tube 2 Boiling tube 3Iron:21 22 21 Starting temp35 33 31 Highest tempBoiling tube 1 Boiling tube 2 Boiling tube 3Zinc:22 21 22 Starting temp56 55 58 Highest tempBoiling tube 1 Boiling tube 2 Boiling tube 3Results table:Start temperature?CTemperature after?CMetal123Avr?C123Avr?CMg21?C21?C21?C21?C87?C82?C83?C84?CPb21?C21?C21?C21?C22?C25?C23?C23?CFe21?C22?C21?C21?C35?C33?C31?C33?CZn22?C21?C22?C22?C56?C55?C58?C56?CChange of temperature?T = change in temperature?T = end of temperature start temperatureMg = 84-21 = ?T 63à ¯Ã‚ ¿Ã‚ ½cPb = 23 21 = ?T 2à ¯Ã‚ ¿Ã‚ ½cFe = 33 21 = ?T 12à ¯Ã‚ ¿Ã‚ ½cZn = 56 22 = ?T 34à ¯Ã‚ ¿Ã‚ ½cWorkings outMass of Mg = 0.48g à ¯Ã‚ ¿Ã‚ ½ 10g (mass of the copper sulphate) = 4.8gMass of Pb = 4.14g à ¯Ã‚ ¿Ã‚ ½ 10g (mass of the copper sulphate) = 41.4gMass of Zn = 1.3g à ¯Ã‚ ¿Ã‚ ½ 10g (mass of the copper sulphate) = 13.0gMass of Fe = 1.12g à ¯Ã‚ ¿Ã‚ ½ 10g (mass of the copper sulphate) = 11.2g?Q = m à ¯Ã‚ ¿Ã‚ ½ Cp à ¯Ã‚ ¿Ã‚ ½ ?TMg = 10.48g à ¯Ã‚ ¿Ã‚ ½ 4.2 à ¯Ã‚ ¿Ã‚ ½ 63à ¯Ã‚ ¿Ã‚ ½cPb = 14.14g à ¯Ã‚ ¿Ã‚ ½ 4.2 à ¯Ã‚ ¿Ã‚ ½ 2à ¯Ã‚ ¿Ã‚ ½cZn = 11.3g à ¯Ã‚ ¿Ã‚ ½ 4.2 à ¯Ã‚ ¿Ã‚ ½ 12à ¯Ã‚ ¿Ã‚ ½cFe = 11.12g à ¯Ã‚ ¿Ã‚ ½ 4.2 à ¯Ã‚ ¿Ã‚ ½ 34à ¯Ã‚ ¿Ã‚ ½cMetalQ (J)MgPbZnFe1270.08347.761856.4560.448AnalysisWhen doing my test there were some things that went wrong. When I poured in my metals, because I had already put the copper sulphate in the boiling tubes the metals stuck to the side, which may have ruined my results. If all of the metal was included in the experiment then a higher reading may have been taken. If I were to do this test again I would use a funnel to put the metals inside the boiling tubes or use bigger boiling tubes.The boiling tubes lose heat through the glass. To make it a fairer test next time I should use polystyrene or cotton wool to wrap around the test tube this way not much heat should escape.When doing my e xperiments I only repeated the tests 3 times to get a reading it would be better if I had dine the experiment about 5 times then I would have been able to get more of a accurate result.Luckily when I did my tests I didnt get any odd results. All of my results were about the same the only difference was a few degrees.

Becoming A Knight Essays - Knight, Stock Characters, Romance

Becoming A Knight Essays - Knight, Stock Characters, Romance Becoming a Knight During the middle ages, in order to become a knight one had to go through many years of training. A knight-to-be spent at least fourteen years of his life learning the proper conduct and etiquette of knighthood. Once the years of training were completed, often an elaborate ceremony took place when the gentleman was knighted. Once knighted, the man had to live by the code of chivalry. This code had the basic guidelines of a knight's behavior. This code was so respected that abiding by it brought honor and respect from others. The education of a knight began at the age of seven. This was when a boy was taken from his home and sent to the castle of a famous noble, perhaps his father?s lord. Here he served the lord and the lady as a page until he was fourteen years old. One of the many duties of a page was to accompany the lord and lady at all times. He also waited on them during meals, and went with them on various affairs doing whatever was asked of him. As a page, he received religious instruction from the chaplain. The squires taught the page fighting skills, and gave him training in arms. The mistress and her ladies taught the page to honor and protect all women. He also learned to sing and to play the lute, in order to hunt and hawk. The most important thing that he learned during the seven years as a page was how to care for and ride a horse. This was a skill that was essential when becoming a knight, because a horse was his primary mode of transportation. At the age of fourteen, the page became a squire, and at the same time, was formally assigned to a knight. He now learned to handle a sword, lance, and to bear the weight of heavy armor. Along with his continued duties from when he was a page, he now had to carve at the dinner table, and accompany his knight to war. He was constantly receiving instructions from the knight, and attended to the knight?s personal needs. He assisted the knight with putting on his armor, and had to make sure the sword and other arms of the knight were polished. He also had to care for the knight's horse, which entailed grooming, feeding, and constant attention. The squire stood by in battles to give aid in a conflict should the knight be overmatched, and to lend his horse should his master lose his own. It was the squire who picked up the knight when he fell, and took his body away if he was injured or killed. This all lasted for the next seven years of the squire's life. At the end of th! is period, when he was twenty-one, a squire who had demonstrated his competence and worth, either by successful completion of his training or on the actual field of battle, was knighted. The ceremony of the squire becoming knighted was often very elaborate. The squire had to first take a purification bath that symbolized the purity of his new life. After the bath, he knelt or stood all night in prayer before the altar on which the armor he would wear later lay. In the morning they had a religious ritual, with perhaps a sermon on the knight?s duty to protect the weak, make wrongs right, and honor women. After this, in the courtyard in the presence of the assembled knights and fair ladies, the knight's armor was buckled on. He was presented with a pair of golden spurs, which only a knight could wear, a shining new suit of armor, a sword, a shield, a lance, and a charger. After putting on the armor piece by piece, he knelt to receive the accolade. This was a blow upon the neck or shoulder, given by the officiating lord, or knight with his fist, or with the flat of a sword. As the blows were given, the lord said, ?In the name of God and St. Michael and S! t. George, I dub thee knight; be brave and loyal.? He was now a full-fledged bachelor knight entitled to all the honors and privileges

Managing Decision Making and Decision Support Essay

Managing Decision Making and Decision Support - Essay Example This paper will mainly look at the association flanked by the REM and OR and SSM. The issue learns on JB Casting will be used from side to side out to exemplify the relationship flanked by the theories and the methodologies. "Management in order system is necessary for creating spirited firms, organization global corporation, and providing helpful products and services to clientele." (Laudon, 2002, P1) It provides in order figure of reports and displays to executives. For instance, sales managers may employ their computer workstations to obtain sales consequences of their foodstuffs and to the right of entry weekly sales psychoanalysis reports, and then assesses sales made by every seller. "Management in order systems arose in the 1970s to centre on computer-based in order systems meant at managers." (Laudon, 2002, P15). Since of the growths of the Internet, globalisations of a deal, and the rise of in order economies have to get better the role of in order system in commerce and management. And then it wants pays notice to organisation management in order that issues raised by sociology, finances, surroundings and psychology. "An association is a stable, official social arrangement that takes capital fr om the surroundings and procedure them to create outputs." (Laudon, 2002, P87) This essay will be assessing the payment of Management in order System to Organisations. ... Organizational Environment Organizations always are livelihood in a various and altering environment. The executives of the association will catch the helpful information and resource from the surroundings to attain managerial objectives. We can look upon the organization as an unlocking scheme which interacts with the surroundings. Through planning, association, most important, making-decision, managers attempt to change and manage elements in the surroundings. Today's surroundings admiration additional multifaceted and unbalanced, it leads managerial management also experiences very far above the ground uncertainty and vagueness. As a successful director, you should use theoretical skills to forecast surroundings, personal skills to resolve disagreement in managerial civilization or worldwide relationship, and technological skills to direct uncertain in order. When boss meet new surroundings and new confront which had never occurred, how do they resolve evils by means of their management skills and information and referring from particulars which had happened Today managers have to focus on environment altering, they will totally appreciate and manage the environment to have effectual management in the association. The piece of writing includes there sectors. The first division presents how unsure surroundings do and the surroundings affect the organization life. The next division gives a figure of examples to explain that beneath the uncertain surroundings, executives weaken the lucid psychoanalysis. The third sector, the author wants to find additional effectual approaches to make your mind up difficulty under the unsure and ambiguous surroundings.  Ã‚  

Case Study Paper Essay Example | Topics and Well Written Essays - 500 words

Case Study Paper - Essay Example The news is a catastrophic event for the unemployed persons in the country, particularly for those who are living in their own house and have gone jobless for last few months or more and are unable to pay on their mortgages. Alan from Wall Street Journal reports, â€Å"About 3.6 million homes are likely to be lost to a foreclosure or distressed sale by 2013, on top of 6.7 million since 2006, according to Moody's Analytics.† This is really a grim situation in the sense that it is likely to bring a doom to all real estate owners. Why? In a free market, economic principles apply in its full force. One such law is demand and supply. Price remains in equilibrium when supply matches demand. Here the scenario is different. There is huge supply and very little demand. Sources say that the excess inventory of housing units for sale or on rent is estimated to be 1.2 million units at the end of 2010. (Fig 1; Berg, Robert 2010). Housing stock is stated to have aggregate demand of 0.3 mill ion units per year in the country. Simply these figures indicate that there is already a huge build up in the inventory over the demand.