Sunday, October 6, 2019

Ronald Reagan Essay Example | Topics and Well Written Essays - 2000 words

Ronald Reagan - Essay Example Franklin Delano Roosevelt's populist rhetoric attracted Reagan to him and later influenced Reagan's speaking style† (Reagan 2020). During the early stages of his career, he landed a job as radio sports sportscaster, â€Å"first at WOC in Davenport, IA, later a full time staff announcer at WHO in Des Moines† (United States. Presidents p. vii). â€Å"However, his biggest break came in the year 1937, when he joined a screen test and succeeded him a contract in Hollywood. Reagan was a famous movie actor during the next two decades and he graced in a total of 53 films† (The White House). â€Å"Account of his personal life included a first marriage to actress Jane Wyman while filming the movie Brother Rat. His first child Maureen was born and Michael Reagan was adopted before their divorce in 1949† (United States Presidents viii). â€Å"In 2001, his first child Maureen passed away†( The White House). â€Å"In 1952, he remarried to a fellow actress in the person of Nancy Davis, with whom had two children, Patricia Ann and Ronald Prescott† (The White House). â€Å"Reagan and Davis appeared only in one film entitled Hell Cats of the Navy which was filmed in 1957. In 2002, they celebrated their golden wedding anniversary†. ... â€Å"In 1952, he campaigned as a Democrat for Eisenhower. Reagan accepted a job as spokesman for the General Electric Company† (Reagan 2020) which allowed him to â€Å"tour the country by giving speeches as General Electric’s spokes person† (United States President p. viii). He became an advocate for conservatism as this was evident during his speeches. â€Å"In 1960 Reagan joined the campaign of Richard Nixon when he ran for Presidency. In 1962, he officially made a swing to another party which is Republican. It was during his speech in the year 1964, where he appeared on a television address for Goldwater, A Time for Choosing, which officiated his bid to enter a political career. There were several groups who supported his political career, particularly, the group of California businessmen who placed him in his gubernatorial bid. His first autobiography entitled Where's the Rest of Me?  was published in 1965† (Reagan 2020). â€Å"Reagan was elected G overnor of California in 1966 by a margin of a million votes† (The White House). It was during this time when he conquered the incumbent governor then, Edmund G. Brown by a landslide of over a million votes. His success in the election as governor prepared him to become a leading contender for the Republican Presidential race in 1968 (Reagan 2020)†. â€Å"In the same year of 1968, he made a tentative run for the presidency, while waiting until the Republican National Convention to announce his candidacy† (Reagan 2020). He gave his support to Richard Nixon as he joined his massive supporters. â€Å"He sought for re-election as governor and won in 1970† (The White House). â€Å"In the year 1974, months after the expiration of his term as Governor, he began to write for a syndicated

Saturday, October 5, 2019

Entrepreneur Essay Example | Topics and Well Written Essays - 500 words

Entrepreneur - Essay Example In addition, it will also describe some of the measures that they as business entrepreneurs can learn, use, introduce and/or implement so that they can improve, manage and mitigate the risks so that they can have long lasting and successful business enterprises. Entrepreneurship is developing new, better and competitive products and/or services by utilizing and maximizing the available resources, so as to meet the never ending and unmet human necessities. It is also described as the ability to direct, control, execute, manage, analyze and take responsibility of the risks (Ramachandran 220). Business entrepreneurship is also one of the most crucial driving forces of economies globally. A business entrepreneur is an individual who sources for opportunities within the economy by analyzing the unmet human needs; he/she takes advantage of the opportunity/ situation at hand; hence, introduces and implements products and/or services that will meet these needs .Moreover, he/she effectively manages the foreseen and unforeseen risks/ challenges involved in the business. Just like any leader, for any business entrepreneur to achieve success, they have to work within the essentials of management which entail; being effective, practice efficiency and also exercise economy management. Effectiveness in meeting the set objectives(s) or goal(s) is achieved by meeting the unmet needs which led to the product. Efficiency is achieved by doing things in the right way; by setting clear guidelines; procedures and processes to be followed in their undertakings. Business entrepreneur has by being economical by minimizing their production costs; they achieve this by using the right but also low cost resources for their products and services while still maintaining the products and/or services standards. A Business entrepreneur has to possess the key management skills these include planning, leadership, organizing and time management skills among others (Ramachandran 210). Most business

Friday, October 4, 2019

Using Cohens Book Compare Churchill and Linclon Essay

Using Cohens Book Compare Churchill and Linclon - Essay Example Abraham Lincoln in his Gettysburg address was able to clearly enunciate his vision for the future as he pleaded that soldiers should not have died in vain so that â€Å"that this nation under God shall have a new birth of freedom.†2 His goal of democracy for the people through equality thus became the goal of the Civil War – the achievement of freedom for everyone including the slaves, which became the goal that was to be fought for. The abolishing of slavery was the ultimate goal of Abraham Lincoln and this formed the framework of his persistent focus upon the defeat of the South in order to establish a new dawn of freedom within the United States. In a similar manner, Winston Churchill set out the goals of the IInd world war when he stated that the mission was to â€Å"wage war against a monstrous tyranny never surpassed†¦Ã¢â‚¬ with the aim being â€Å"victory at all costs.†3 He clearly spelt out the ultimate goal, which was to defeat Germany at any costs, visualizing a future where the evil perpetrated by Adolf Hitler would cease to exist. England was hard pressed for resources, yet Churchill sought to protect his country from the rule of the German dictator by going on the offensive. In this battle, defeat was untenable because it would have meant the suppression of freedom and the imposition of German rule. He clearly conveyed to his countrymen the dangers inherent in the cause, the loss of life that would result, but also spelt the goal – which was the fight against evil and by envisaging German defeat in this manner, it was able to be brought about. In achieving their respective visions, both of these leaders were able to exercise transformational modes of leadership and inspire their countrymen. In transforming his vision of freedom from slavery into concrete action, Lincoln executed this as a strategic war offensive against the generals of the Confederate Army to move swiftly and decisively and crush

Thursday, October 3, 2019

Change Management and Communication Plan Essay Example for Free

Change Management and Communication Plan Essay Riordan Manufacturing is doing big things to improve their organization. They have decided to change how the organization manages their customer management system. The company has not had any formal system for managing their customer information and has in the past left this up to each individual employee. This new system will incorporate the use of one customer management system that will be accessed by all employees. Our team will be assisting with this process and will ensure that our plan will make Riordan more effective. During this process we will need to have several planning meetings to assist with the implementation of this new process and the use of our new customer management system. We as a team will ensure that all steps are carefully planned and well presented to the employees. Our number one goal is to make the company more effective. The topics we will need to address include the organizational structure to include chain of command, organizational culture, and the strategy we will use to make these changes effective. Their current method of management is the chain of command. This allows each division to have a supervisor and many levels between the bottom and the top. The level of supervision includes supervisors, middle managers, and executive managers. The informal power structure is a team-oriented working environment. Assignments are currently being completed by appropriate communication among the employees. The lack of focus on individual success is often overlooked. Decentralization can also be a disadvantage as it can lead to control problems for management. This structure can generally increase conflict among employees. The most effective organizational structure that would benefit Riordan would include self-directed teams. Riordan’s team environment would be excellent for  self-directed teams. Self-directed teams can offer several advantages. The largest factor we considered is motivating the employees. This will allow them the highest level of job satisfactory by boosting morale and giving them meaningful positions. Employees that have high levels of job satisfactory are much more engaged in supporting their organization. An employee’s behavior is influenced by their company’s culture. The organizational culture at Riordan includes fairness, dedication, teamwork, performance evaluations and benefits accommodations. Everything the company offers is factored into the culture. These influence an employee’s motivation and will help an employee grow and gain additional experience and knowledge. Some potential influences include career advancement, job security which in return will lead to loyal employees, excellent customer service provided by the employees, and compensation satisfaction. One of the most difficult challenges a company is tasked with is implementing change. As long as a company knows and understands how to effectively implement change, the less resistance they will receive. Reasons that employees resist change include: lack of awareness to the change, fear of being out of comfort zone, fear of not understanding the reasons for change, personal feelings towards the change, conflicts, and fear for lack of job security. Management should always be prepared to effectively deal and handle the resistance most employees will impose. Some strategies Riordan Company should follow include; effective communication of any ideas and implementation of change prior to the change date. Management should always be mindful of employee concerns and work on different training methods to help them cope with any changes that will be occurring. Every employee should be given the opportunity to provide feedback regarding the changes. Another strategy is to expect the resistance when implementation takes place. The best way to handle that is to address it formally and identify the root causes of the change as well as appoint the right leaders to effectively communicate and address any potential issues. As far as the implementation of the new system goes, the next 12 months will be critical. A plan will help to dictate the direction in which the plan will take the business. Providing a detailed step-by-step instruction manual, so to speak, will be the best chance for the success of the implementation. It may take a bit longer, but implementing the plan only one step at a time will make for  an effortless transaction from one norm to the next. This will also allow for feedback of the employees without aggravation, which will also give them time for significant improvements. At first, the employees will likely be confused by the change. It will take time to adapt to the new norm before an evaluation of the success can be determined. Training will be of great importance. Having a pre-knowledge of the upcoming events will prepare the employees for the inevitable. We know that the change is coming and so should they. The customer base is the best way to know for sure if the plan is effective. Most businesses only exist as a service to a customer; therefore, training the employees on the right and wrong reactions to the customers and the service that they r eceive will be the primary goal for Riordan Manufacturing. This will give the sense that the company is making the necessary changes to better serve them. The Communication Plan Riordan Manufacturing communication plan will consist of a formal email being sent to all managers in charge of specific sectors about the Change Management Plan with a follow up of sector face-to-face meetings. A formal email being sent out will ensure the message being delivered in a timely fashion to prepare the managers for the change. It will also give them more time to prepare a face-to-face meeting with all sector employees before the change is made. The face-to-face meeting will ensure the employees that Riordan Manufacture messages about any change that could affect them are being relayed on a more personable level. This channel will also allow manager to receive feedback from employees whether it is questions or concerns. A barrier that could be a problem for the managers trying to deliver this Change Management Plan is Communication Apprehension. This kind of barrier takes place when an individual gets extremely nervous, anxious, or even tense when speaking or trying to send any type of communication to others. Since the managers are going to have individual face-to-face meeting with their group of employees, we hope that each manager will have the courage to speak up effectively and accurately about the change. To ensure that there has been effective communication to all employees the managers who delivered  the messages will have to send a report back about the reactions shared by the employees during the meeting. Riordan Manufacturing is excited to announce a new customer management system. This new system will be accessible by all employees and will allow us to provide the most effective customer service possible. During the next few weeks, Department Managers will have face to face meetings with all staff members. Team A will provide an overview of the new system and will allow the opportunity for employees to address concerns and ask questions. Please take this time and offer feedback, your feedback and concerns are vital to the success of this organization. Our number one goal is to deliver the best customer service to both internal and external customers. Together we can make this change a success. In conclusion communication and planning are the two most important things when implementing change within any organization. Employees need to know that their input is appreciated and heard. Allowing managers and employees the opportunity to provide feedback will increase morale and will maintain high levels of job satisfaction. Riordan Manufacturing has taken the necessary steps to implement the new customer management system with proper planning and communication.

Wednesday, October 2, 2019

Statistical Analysis of Cricket Matches

Statistical Analysis of Cricket Matches Abstract The effect of playing home or away and many other factors, such as batting first or second, winning or losing the toss, have been hypothesised as influencing the outcome of major cricket matches. Anecdotally, it has often been noted that Subcontinental sides (India, Pakistan, Sri Lanka and Bangladesh) tend to perform much better on the Subcontinent than away from it. In 2009, Joshi published an article in the Royal Meteorological Society Journal Weather which suggested that the prevailing weather conditions were more important to the results of the Ashes test series in Australia than were the relative strengths of the teams. In this paper, focusing on results of mens One Day International (ODI) matches involving England, I investigate the extent to which a number of factors including playing home or away (or the continent of the venue), batting or fielding first, winning or losing the toss, the mean temperature and humidity during the game, the condition of the pitch, and the strength of each teams top batting and bowling resources influence the outcome of matches. I employ a variety of Statistical techniques, and conclude that the continent of the venue does appear to be a major factor affecting the result, but winning the toss does not. In the second part of this study, I will use any significant factors to attempt to build a Binary Logistic Regression Model that will predict the chance of England winning at different stages of a game. The study also looks at using this model to consider different gambling techniques to see which would have created the most profit for past games. Introduction 1.1 Understanding the Basics of ODIs A One-Day International (ODI) is a game of cricket between two International teams. The team that wins a coin toss has the choice to either bat or bowl in the first innings. The team batting first have a maximum of 50 overs or 10 wickets to score as many runs as they can, this is more commonly known as setting a total. An over consists of 6 balls from one bowler and the following over must be 6 balls from a different bowler from the opposite end of the pitch. Each bowler is allowed a maximum of 10 overs each. The first innings will be complete when either all 300 legitimate deliveries have been bowled or all 10 wickets have been lost. The team batting second then have 50 overs and 10 wickets to score more runs than their opponents, this is referred to as chasing a total. 1.2 History of cricket formats Cricket has been a game played in England for hundreds of years, and it is believed that it may date back to 1500. However, the earliest records available are from the early 17th century. There are currently 3 popular formats of the sport played at International level and below. The longest format of the game is either called a Test Match in International cricket or a first-class match in domestic cricket. Test matches are played between two nations which have reached Test status. This is determined by the International Cricket Council (ICC). In a test match, both teams have two innings each to accumulate more runs than their opponents. Test matches have a maximum time allowance of 5 days, if the result of the game is not already decided at the end of day 5, then the match ends as a draw. Throughout history, there have been games that have lasted more than 5 days, however in recent years this has been a strict guideline. The most famous case of an extended test match was when England toured South Africa in 1939; the game was extended to the 9th day to produce a result, however when England required only 41 more runs to win, the England players had to leave the ground to catch the last ferry home and the match ended in a draw. (sahistory, 2014) First-class is a term that describes the highest level of domestic cricket played within each of the cricketing nations. Each nation has a first-class competition which must also consist of two innings each and last at least 3-days. In England, first-class cricket is a 4-day competition played between 18 counties. This was the only format of the game throughout the 17th, 18th and 19th centuries. County cricket is where all England cricketers develop their game, and Moores and Tickner (2016) say that The key to improvement is not to radically overhaul our county system. It is to embrace it. This is regarding ongoing controversy towards the argument that the English county system is at fault for Englands failures. A 2015 ar ticle written by Kevin Pietersen entitled Broken county system is damaging our national side is a key example of this, where Pietersen argues that bowlers arent quick enough and too much cricket makes county players fatigued. However, Moores and Tickner are stating that there are many talented cricketers in the county circuit, who are overlooked due to their lack of international experience, and the only way for them to gain experience is to be given a chance. They argue that the blame for Englands failures often comes through not using the top county cricketers, rather than the county system itself. The first ever official Test match was in 1877, when England narrowly lost to Australia at the Melbourne cricket ground. Then 5 years later, when England lost to Australia at home, The Sporting Times printed a mock obituary of English cricket which concluded that The body will be cremated and the ashes taken to Australia. (Lords, 2016). This was the start of the infamous Ashes series that is still contested today between the 2 nations. Limited Overs cricket was first introduced in 1951 in a small town in Kerala, India. KV Kellappan Thampuran formed the Tripunithura Cricket club before coming up with the idea of playing a one-day game. (Kerala Cricket Association, 2016). It was adopted into County Cricket in England in 1962 when the Midlands knock-out cup took place between Northamptonshire, Leicestershire, Derbyshire and Nottingham and was 65 overs per side. In 1969, there was a change in the law which allowed more sporting events to take place on a Sunday. (Miller and Tickner, 2016). This was an opening for Sunday League cricket, where counties would play a limited overs game on the Sunday following a first-class match in the week. The number of overs per side have since been reduced to 60, 50, 45 and 40. (BBC cricket, 2006). The first ODI was played on 5 January 1971 when the first 3 days of a test match between Australia and England were washed out, so a one-off 1-day game consisting of 40 8-ball overs was arranged. This game was played with white kits and a red ball. Soon after this, ODI cricket caught on and became increasingly popular towards the end of the 1970s, the World Series Cricket was organised and the 1979 season saw the start of coloured kits with a white ball and 50 6-ball overs in ODIs. This was an unpopular decision at the time as it was only done to fit in more advert breaks. (Jackson, 2014). However, these advert breaks allowed more money to come into the game to be spent on, not only player development, but players wages to make cricket a more appealing profession. Until these advert breaks came in, most cricketers would be working two jobs and now that cricket could be their main priority, there was a big increase in terms of fitness, technique and overall development of the game. ODIs have changed a lot since the 1970s; there are now fielding restrictions, powerplays and other factors that have led to scores increasing within 50 overs. In the 1980s a score of 250 in 60 overs was thought of as a good total, but whilst this study is taking place, in 2017, teams are looking to set a total of 300 in most matches. Below is a table taken from howstat.com showing the top 20 ODI scores in history. Table: Top 20 ODI team totals. Taken from howstat.com Here you can see that all the top 20 scores have been in the last 11 years, even though ODIs have been around for 46 years and ODIs in the 20th Century were often 55 or 60 overs. For this reason, when I investigate factors that influence the chance of England winning an ODI, I only take data from the 21st Century as I believe the statistics from earlier ODIs are almost irrelevant to todays game. Twenty20 (T20) cricket is the newest cricket format. Each side has just 20 overs each to score more runs than their opponents. However, the number of resources (wickets) stays the same, allowing for a more attacking style of play throughout the whole game since losing wickets is not as harmful to the team. The cricketing authorities were looking to boost the games popularity with the younger generation in response to dwindling crowds and reduced sponsorship. (Cricketnext, 2009). 1.3 Why ODIs? There are several reasons I have chosen to use ODI statistics rather than Test matches or T20s. The overall aim of the study is not only to find significant factors that influence the outcome of cricket matches, but also to use these factors to be able to predict the chance of England winning a game. I believe that Test matches end in a draw too often to build a win predictor, and Frank Duckworth (2001) said one of the great weaknesses of first class cricket is that the most usual result is a draw. This doesnt mean that the two sides have performed equally, but that the game was unfinished when time ran out. Through collecting data from cricinfo.com and taking the means of draws per country in test match history tells us that there is a 32.07% chance that a Test match will end in a draw. This could be due to defensive tactics as the game lasts much longer than other forms of cricket. Bad weather conditions can also take a whole day or more out of the match and this coupled with the m ore defensive style can make it harder to get a result. From the first ODI game up until the 19th July 2016, 33 out of 3764 games resulted in a tie, meaning that less than 1% (0.87%) of matches have been tied. This is clearly a much lower percentage than in test matches. Also, when an ODI produces this result, it is usually because the game deserves to be a tie as the two sides have performed equally rather than any other factors. The less ties result will allow me to build a win predictor more accurately. T20 is a relatively new format of cricket where teams go away from typical tactics and playing proper cricket shots and instead use a hit out or get out style of play. This means that it is much harder to predict who will win a T20 game as one good individual performance can all but win the game. For example, if one batsman scored 100 in a T20 match, even if the rest of the team only gained another 30 runs, a total of 130 could still win the game. Comparatively, in ODIs much more of a team effort is required, and a sustained performance is needed to win the game. There are also not as many patterns in T20 games, as usually, the whole 20 overs are spent attacking. Whereas ODIs require defence, patience, tactical field settings and tactical batting in terms of when to up the run rate. In an ODI series usually the better or higher ranked team will come out on top. However, in T20 matches this is much more unpredictable, and countries such as Afghanistan and the Netherlands have had succ ess in T20 format, despite the latter not being in the 2017 ICC ODI rankings (ICC 2017). 1.4 D/L Method One issue which has always been present in cricket is that bad weather conditions, especially rain, will often affect games, especially in limited overs cricket. For the first 30 minutes of delay there are no overs lost, then every 5 minutes after this there is 1 over lost per side. For an ODI to be completed there must be at least 20 overs per side played. There is usually no reserve day for a game that ends as a no result, due to tight scheduling. To minimalise the impact of weather factors that cannot be controlled, the Duckworth-Lewis (D/L) method is used to calculate the target scored for the team batting second where the rain has interrupted the game. It is a mathematical formulation that takes in to consideration how many overs and wickets remain so the game has a higher chance of ending in a result. The fundamental basis of the Duckworth/Lewis (D/L) method is that we do not correct the target by the proportion of overs lost, but by the proportion of the total run-scoring reso urces lost. (Duckworth 2001) There have been many previous attempts at creating a system to set a total so that games can be completed, including the average run rate (ARR) method and the most productive overs (MPO) method. The average run rate method was used to set a total, and it did this by taking the average number of runs scored per over x the reduced innings. The problem with ARR is that it is too simplistic, and gave an unfair advantage to the team batting second if there was rain. The most productive overs method was introduced by the Australians and it set the target to chase by reducing the total based on the number of runs scored in the most productive overs. However, this did not take in to account when the overs were lost and could result in a very unfair target. (Duckworth and Lewis 2012) As an aside, a way to solve the problems of weather affected matches could be coming in the form of indoor cricket. The first indoor match to be played was an ODI between Australia and South Africa on the 16th August 2000 (Ramaraj 2013). However, this has not caught on around the world despite the promise of a full days play. Jonty Rhodes (Grunill and Lillywhite 2005), a South Africa player in the game, said there were problems to overcome, namely the fact that players were looking up at the lights even when the ball was at head height as the lighting was not on pylons. 1.5 Initial Variables Winning the Toss The coin toss is contested between the home and away captain 30 minutes prior to the first ball being bowled. The captains will go out onto the pitch and before contesting the toss they will assess the conditions to help them make their choice of batting or bowling first. Some of the conditions they consider are also variables I have looked at in this study. In the 17th century it is believed that the winning captain also got to choose which pitch was used for the game, a job that is now left to the umpires. Hypothesis 1: Winning the toss will significantly increase the chance of winning an ODI. Batting or bowling first Upon winning the toss, the captain is left with the strategic decision between batting first or second. Some people believe that a team should bat first and produce a psychological hurdle for the second team to overcome. Other people believe that there is an advantage in batting second as the score required has already been produced. (de Silva and Swartz, 1998). Some people also believe that it is best to look at several factors before making the choice of batting or bowling first. Hypothesis 2: There will be no significant increase in the chance of winning an ODI by always batting or bowling first.       Home or Away Home team advantage is believed to be a significant factor in most, if not all sports. In a 2008 study Measurement and Interpretation of Home Advantage, Stefani says that the biggest factors believed to lead to home team advantage are travel fatigue, home team spectator support and home team familiarity. In ODI cricket, travel fatigue should not be too much of a factor as teams will usually arrive at the opposition country a week or 2 before the series. Morley and Thomas (2005) find that attendance figures at English cricket matches do not give any significant advantage to the home team. They do however state that in certain venues this may not be the case. This leaves us with home team familiarity, and I believe this factor weighs heavily in the outcome of ODI matches. The average score at a ground in England can be very different from a ground in another continent. For example, the average run rate in ODIs at the Kia Oval in London, United Kingdom is 4.84 and the average run rate in Lahore, Pakistan is 5.24. (howstat, 2017). Both grounds have been hosting ODIs since the 1970s. This means that teams must change their mindset about what is a good 1st innings total when they play away from home. Weather conditions and cricket pitches also vary in different countries and continents. There are 9 official test teams in the ICC rankings and each of these countries has a usual type of pitch. The term dead pitch is used to describe pitches that are flat and offer little help for bowlers. Dead pitches are the most common wickets that are prepared these daysà ¢Ã¢â€š ¬Ã‚ ¦. the most common pitch type in ODIs. (cricketequipmentusa, 2017). These pitches are often found in Australia, South Africa and the West Indies. English pitches are usually encouraging for fast bowlers; pitches are often referred to as green tops. These pitches are also found in New Zealand and sometimes South Africa, they have a thin layer of grass which helps to produce swing and seam. Overcast and windy conditions are often present in England, which can correspondingly assist the ball to swing. Pitches on the subcontinent are often the opposite, where wickets are dry and dusty. The subcontinent is a term used to describe a large part of Asia, and includes the 4 big cricketing nations; India, Pakistan, Sri Lanka and Bangladesh. The lack of rain in the subcontinent means no green on the pitches and the dr yness creates a lot of spin and uneven bounce. This is undoubtedly the reason why subcontinent teams have produced some of the best spin bowlers and why teams like England seem to struggle when playing away there. Hypothesis 3: England perform significantly better at home than anywhere else. Hypothesis 4: England perform significantly worse in the subcontinent than anywhere else. The first section of my study will test the variables mentioned above using a three-way ANOVA table. I test for statistical significance (

Magnetic Susceptability :: essays research papers

Magnetic Susceptability Abstract:   Ã‚  Ã‚  Ã‚  Ã‚  The change in weight induced by a magnetic field for three solutions of complexes was recorded. The change in weight of a calibrating solution of 29.97% (W/W) of NiCl2 was recorded to calculate the apparatus constant as 5.7538. cv and cm for each solution was determined in order to calculate the number of unpaired electrons for each paramagnetic complex. Fe(NH4)2(SO4)2â‚ ¬6(H20) had 4 unpaired electrons, KMnO4 had zero unpaired electrons, and K3[Fe(CN)6] had 1 unpaired electron. The apparent 1 unpaired electron in K3[Fe(CN)6] when there should be five according to atomic orbital calculations arises from a strong ligand field produced by CN-. Introduction:   Ã‚  Ã‚  Ã‚  Ã‚  The magnetic susceptibility is a phenomena that arises when a magnetic moment is induced in an object. This magnetic moment is induced by the presence of an external magnetic field. This induced magnetic moment translates to a change in the weight of the object when placed in the presence of an external magnetic field. This induced moment may have two orientations: parallel to the external magnetic field of or perpendicular to the external magnetic field. The former is known as paramagnetism and the later is known as diamagnetism. The physical effect of paramagnetism is an attraction to the source of magnetism (increase in weight when measured by a Guoy balance) and the physical effect of diamagnetism is a repulsion from the source of magnetic field (decrease in weight when measured by a Guoy balance).   Ã‚  Ã‚  Ã‚  Ã‚  The observed magnetic moment is derived by the change in weight. This observed magnetic moment arises from a combination of the orbital and spin moments of the electrons in the sample with the spin component being the most important source of the magnetic moment. This magnetic moment is caused by the spinning of an electron around an axis acting like a tiny magnet. This spinning of the  ³magnet ² results in the magnetic moment.   Ã‚  Ã‚  Ã‚  Ã‚  Paramagnetism results from the permanent magnetic moment of the atom. These permanent magnetic moments arise from the presence of unpaired electrons. These unpaired electrons result in unequal number of electrons in the two possible spin states (+1/2. -1/2). When in the absence of an external magnetic field, these spins tend to orient themselves randomly accordingly to statistics. When they are placed in the presence of an external magnetic field, the moments tend to align in directions anti parallel and parallel to the magnetic field. According to statistics, more electrons will occupy the lower energy state then the higher energy state. In the presence of a magnetic field, the lower energy state is the state when the magnetic moments are aligned parallel to the

Tuesday, October 1, 2019

The Signalman Analysis

The story begins with the narrator calling â€Å"Halloa! Below there! † into a railway cutting. The signalman standing on the line below does not look up, as the narrator expects, but rather turns about and stares into the railway tunnel it is his responsibility to monitor. The narrator calls down again and asks permission to descend. The signalman seems reluctant, but assents and waits with an air of ‘expectation and watchfulness’. The railway cutting is a damp, gloomy and lonely place. The signalman seems still to be in fear of the narrator, who tries to put him at ease. The signalman appears to have seen the narrator before. The narrator assures him that this is impossible. Reassured, the signalman welcomes the newcomer into his little cabin and the two men speak of the signalman's work. His labour consists of a dull, monotonous routine, but the signalman feels he deserves nothing better, as he misused his youthful academic opportunities. The narrator remarks that the signalman seems a sane and dutiful employee at all times but when he looks to his signal bell at two moments when it is not ringing. The visitor leaves with a promise to return on the following night. Before he makes his exit, the signalman asks him why he used the words â€Å"Halloa! Below! † on his arrival; were they not suggested to him â€Å"†¦in any supernatural way†? The narrator says no. The signalman implores him to by no means call out so again. He says that he is â€Å"troubled†. The following day the narrator returns and does not call. The signalman tells him that he will reveal to him the nature of his trouble, which is that he is haunted by a recurring apparition: he has seen a spectre at the entrance to the tunnel on two separate occasions and that each appearance has foreshadowed a tragedy. In the first instance, the signalman heard the shouted words that the narrator spoke and saw a figure with its arm across its face, waving the other in desperate warning. He questions it but it vanishes. He then runs into the tunnel but finds nobody. Within a few hours there occurs a terrible train crash with many casualties. On its second appearance, the figure is silent, with both hands before the face in an attitude of mourning. Soon afterward, a beautiful young woman dies in a passing train. Finally the signalman admits that he has seen the spectre several times within the past week. It seems to the narrator that the signalman is suffering from hallucinations. During the conversation the signalman sees the spectre, and hears his bell toll out a phantom ring, but the narrator sees and hears nothing of these events. The signalman is convinced these supernatural incidents are portents of a third tragic event yet to happen, and is sick with fear and frustration: he does not understand why he should be burdened with knowledge of an incipient tragedy when he, as a lowly railway functionary, has neither the authority nor the ability to prevent it. The sceptical narrator believes that his new friend's imagination has been overtaxed and suggests taking him to see a doctor. The following day the narrator visits the railway cutting for a third time, and is struck to see a figure at the mouth of the tunnel. This figure is no ghost, however. It is a man, one of a group of officials investigating an incident on the line. The narrator discovers his friend the signalman is dead, having been struck by an oncoming train. He had been standing on the line, looking intently at something, and failed to get out of the way. The driver of the train explains that he did attempt to warn the signalman of his danger: as the train bore down on the signalman the driver called out to him â€Å"Below there! Look out! Look out! For God’s sake, clear the way! † Moreover, the driver waved his arm in warning even as he covered his face to avoid seeing the train strike the hapless signalman. The narrator notes the significance of the similarity between the driver's actions and the actions of the spectre as the signalman had earlier described them, but leaves the nature of that significance to the reader.