File Management in Unix Essay

When it comes to UNIX systems all user data is organized and stored in files. These files are subsequently organized into a management structure comprising of directories and sub-directories. Much like forest and organizational units when it comes to active directory, UNIX also has the directories and sub-directories organized into a tree-like structure that it calls a file system. UNIX also has three basic types of files. When it comes to security files can be secured through UNIX file permissions as well as access control lists (ACLs). One of the most important things to keep in mind when giving permissions is to establish file and directory ownership. Traditional UNIX file permissions can assign ownership to three classes of users that are: user, group, and others. The user class is usually the file or directory owner, and that is the individual that created the file. The owner of a file can decide who has the right to read the file, or have the ability to write the file; which means they can make changes. This is effective if you had an organization that has five thousand employees and you only wanted four thousand nine-hundred ninety people to have permission to view and/or make changes. Another ability that the owner has is to decide if the file is a command or to execute the file. Groups are where you can put a number of users together to establish permissions. It is an effective way to manage policies for users. The others class is all other users who are not the file owner and are not members of the group. An important thing to note is that the owner of a file can usually assign or modify file permissions. Additionally the root account can change a file’s ownership to override system policy. In UNIX there are four different types of file permissions. The first permission is read and it designates which users can open and read the contents of a file only, but cannot make any changes. The second is the write permission, and that designates which users can modify the contents of a file or even delete the file. The next file permission that can be given is the execute permission. This permission designates which users can execute the file if it is a program or shell script. Another thing it does is that those individuals with this permission can also run the program with one of the exec system calls. The denied permission designates which users cannot read, write, or execute file. The types of file permissions apply to regular files, and to special file such as devices, sockets, and named pipes (FIFOs). A great way for any business organization to protect their files effective and to ensure that only people that have the need to access the appropriate is information is to apply the few protective measure that was discussed. You can protect the files in a directory by setting restrictive file permission on that directory.

Academia y Sector real

In the technical sense, V is a terrorist. Is terrorism a legitimate way to overthrow an oppressive government? Is it the only way? Were the fatalities likely caused by Vs. explosions worth the ultimate result? Miramar Gadding, Hosts Embark, Augusto Pinochle, Francisco Franco, and Bonito Mussolini, where all dictators that over controlled and completely abused over the people of the countries in which they ruled, by oppressing slaughtering and torturing the ones that where against their beliefs.All of them actually ended the same, killed by the people from their country that where bored off being constantly mistreated, oppressed and who their human right where violated. I think the same happens in the book v for vendetta if v wouldn't have done what he did the only thing that would change would be the time of the revolution people while always rebel to evil oppression. The term terrorism refers to the use of violence and threats to intimidate or coerce, especially for political purpos es.In that case V is the most accurate terrorist the oral has ever seen, because his method consisted on making fear grow in the government and hope in the peoples heart. The terrorist is the one that opposes to the government because it doesn't believe that what this government is doing is right V wanted to change things to better and he knew very well this government he knew the would not accept any type of opposition whether it was social political cultural o what ever kind was presented. He was witness to all of the horrible things that where done to those who didn't make the cut of the ideal society that the government was trying to create.All the gays, the blacks, the ones with a different way of living, where killed Just for being different from the others. This people control what people see, what people hear, and how people feel. V knew that the only way to tear apart a government which was so cruel, so hostile was by the way of violence or as he call it vengeance. He knew that the government that kills people for being against them would not support a passive rebellion in which the rights of society where demanded. He had to end with this dictatorship from the roots.That's why he had to recur to terrorism or violence, it was the only ay he could really damage and make changes in this government. Words would have not hurt them plus the government wouldn't have let this words spread, they where in total control. It was the only way he could really impact and let people know there was another way to live and not Just by being oppressed and followed. Terrorism is a legit way to overthrow an oppressive government. The oppressive government will never tolerate opposition the will try to get rid of this opposition whether it is by killing, torturing or hopefully exiling it.Terrorism fights back with the name force that the government strikes. Just as the third law of Newton states, â€Å"Each action will have a same reaction† this meaning if the gove rnment kills and oppresses the people, the people will eventually rebel and kill the government oppressors. I believe there are simpler ways to rebel against a government. For example Indian's pacific independence from Great Britain. The difference is that there where not being oppressed and it was what helped this independence to be successful. Mean while oppressed country can only recur to terrorism too make their opinion be taken in mount.The fatalities caused by v where totally worth the outcome of his actions, the people could now build a new England free of oppression, violence, slaughter, and hostility. The can create a democracy where diversity is accepted and cherished. Sure it was not beautiful what V had to do to give this drastic change and great opportunity to the people of England, but it was obviously worth it. As some would say, â€Å"Kill one to save a million â€Å"and that was exactly what V did he devoted what was left of his life to free England from the oppre ssion.

Why Britain Attempted to Tax the American Colonies

Why Britain Attempted to Tax the American Colonies The attempts by Britain to tax its North American colonists in the late 1700s led to arguments, war, the expulsion of British rule and the creation of a new nation. The origins of these attempts lay, however, not in a rapacious government, but in the aftermath of the Seven Years War. Britain was attempting to both balance its finances and control the newly acquired parts of its empire, through asserting sovereignty. These actions were complicated by British prejudice against the Americans. The Need for Defense During the Seven Years War, Britain won a string of major victories and expelled France from North America, as well as parts of Africa, India, and the West Indies. New France, the name of France’s North American holdings, was now British, but a newly conquered population could cause problems. Few people in Britain were naà ¯ve enough to believe that these former French colonists would suddenly and wholeheartedly embrace British rule with no danger of rebellion, and Britain believed troops would be needed to preserve order. In addition, the war had revealed that the existing colonies needed defense against Britain’s enemies, and Britain believed that defense would be best provided by a fully trained regular army, not just colonial militias. To this end, the post-war government of Britain, with a major lead taken by King George III, decided to permanently station units of the British army in America. Keeping this army, however, would require money. The Need for Taxation The Seven Years War had seen Britain spend prodigious amounts, both on its own army and on subsidies for its allies. The British national debt had doubled in that short time, and extra taxes had been levied in Britain to cover it. The last one, the Cider Tax, had proved highly unpopular and many people were agitating to have it removed. Britain was also running short of credit with banks. Under huge pressure to curb spending, the British king and government believed that any further attempts to tax the homeland would fail. They thus seized upon other sources of income, one of which was taxing the American colonists in order to pay for the army protecting them. The American colonies appeared to the British government to be heavily undertaxed. Before the war, the most that colonists had directly contributed to British income was through customs revenue, but this barely covered the cost of collecting it. During the war, huge sums of British currency had flooded into the colonies, and many not killed in the war, or in conflicts with natives, had done rather well. It appeared to the British government that a few new taxes to pay for their garrison should be easily absorbed. Indeed, they had to be absorbed, because there simply didn’t seem to be any other way of paying for the army. Few in Britain expected the colonists to have protection and not pay for it themselves. Unchallenged Assumptions British minds first turned to the idea of taxing the colonists in 1763. Unfortunately for King George III and his government, their attempt to transform the colonies politically and economically into a safe, stable and revenue-producing- or at least revenue-balancing- part of their new empire would flounder, because the British failed to understand either the post-war nature of the Americas, the experience of war for the colonists, or how they would respond to tax demands. The colonies had been founded under crown/government authority, in the name of the monarch, and there had never been any exploration of what this really meant, and what power the crown had in America. While the colonies had become almost self-governing, many in Britain assumed that because the colonies largely followed British law, that the British state had rights over the Americans. No one in the British government appears to have asked if colonial troops could have garrisoned America, or if Britain should ask the colonists for financial aid instead of voting in taxes above their heads. This was partly the case because the British government thought it was learning a lesson from the French-Indian War: that the colonial government would only work with Britain if they could see a profit, and that colonial soldiers were unreliable and undisciplined because they operated under rules different from those of the British army. In fact, these prejudices were based on British interpretations of the early part of the war, where cooperation between the politically poor British commanders and the colonial governments had been tense, if not hostile. The Issue of Sovereignty Britain responded to these new, but false, assumptions about the colonies by trying to expand British control and sovereignty over America, and these demands contributed another aspect to the British desire to levy taxes. In Britain, it was felt that the colonists were outside the responsibilities which every Briton had to bear and that the colonies were too far removed from the core of British experience to be left alone. By extending the duties of the average Briton to the United States- including the duty to pay taxes- the whole unit would be better off. The British believed sovereignty was the sole cause of order in politics and society, that to deny sovereignty, to reduce or split it, was to invite anarchy and bloodshed. To view the colonies as separate from British sovereignty was, to contemporaries, to imagine a Britain dividing itself into rival units, which might lead to warfare between them. Britons dealing with the colonies frequently acted out of fear of reducing the crown’s powers when faced with the choice of levying taxes or acknowledging limits. Some British politicians did point out that levying taxes on the unrepresented colonies was against the rights of every Briton, but there weren’t enough to overturn the new tax legislation. Indeed, even when protests began in the Americans, many in Parliament ignored them. This was partly because of the sovereignty issue and partly because of contempt for the colonists based on the French-Indian War experience. It was also partly due to prejudice, as some politicians believed the colonists were subordinate to the British motherland. The British government was not immune to snobbery. The Sugar Act The first post-war attempt to change the financial relationship between Britain and the colonies was the American Duties Act of 1764, commonly known as the Sugar Act for its treatment of molasses. This was voted in by a large majority of British MPs, and had three main effects: there were laws to make customs collection more efficient; to add new charges on consumables in the United States, partly to push the colonists into buying imports from within the British empire; and to change existing costs, in particular, the importing costs of molasses. The duty on molasses from the French West Indies actually went down, and an across the board 3 pence a ton was instituted. Political division in America stopped most complaints about this act, which started among affected merchants and spread to their allies in assemblies, without having any major effect. However, even at this early stage- as the majority seemed slightly confused as to how laws affecting the rich and the merchants could affect them- colonists heatedly pointed out that this tax was being levied without any expansion of the right to vote in the British parliament. The Stamp Tax In February 1765, after only minor complaints from the colonists, the British government imposed the Stamp Tax. For British readers, it was just a slight increase in the process of balancing expenses and regulating the colonies. There was some opposition in the British parliament, including from Lieutenant Colonel Isaac Barrà ©, whose off the cuff speech made him a star in the colonies and gave them a rallying cry as the â€Å"Sons of Liberty,† but not enough to overcome the government vote. The Stamp Tax was a charge applied on every piece of paper used in the legal system and in the media. Every newspaper, every bill or court paper, had to be stamped, and this was charged for, as were dice and playing cards. The aim was to start small and allow the charge to grow as the colonies grew, and was initially set at two-thirds of the British stamp tax. The tax would be important, not just for the income, but also for the precedent it would set: Britain would start with a small tax, and maybe one day levy enough to pay for the colonies’ whole defense. The money raised was to be kept in the colonies and spent there. America Reacts George Grenville’s Stamp Tax was designed to be subtle, but things didnt play out exactly as he had expected. The opposition was initially confused but consolidated around the five Resolutions given by Patrick Henry in the Virginia House of Burgesses, which were reprinted and popularized by newspapers. A mob gathered in Boston and used violence to coerce the man responsible for the Stamp Tax’s application to resign. Brutal violence spread, and soon there were very few people in the colonies willing or able to enforce the law. When it came into effect in November it was effectively dead, and the American politicians responded to this anger by denouncing taxation without representation and looking for peaceful ways to persuade Britain to scrap the tax while remaining loyal. Boycotts of British goods went into effect as well. Britain Seeks a Solution Grenville lost his position as developments in America were reported to Britain, and his successor, the Duke of Cumberland, decided to enforce British sovereignty by force. However, he suffered a heart attack before he could order this, and his successor resolved to find a way to repeal the Stamp Tax but keep sovereignty intact. The government followed a twofold tactic: to verbally (not physically or militarily) assert sovereignty, and then cite the economic effects of the boycott to repeal the tax. The ensuing debate made it quite clear that British Members of Parliament felt the King of Britain had sovereign power over the colonies, had the right to pass laws affecting them, including taxes, and that this sovereignty did not give the Americans a right to representation. These beliefs underpinned the Declaration Act. British leaders then agreed, somewhat expediently, that the Stamp Tax was damaging trade and they repealed it in a second act. People in Britain and America celebrated. Consequences The result of British taxation was the development of a new voice and consciousness among the American colonies. This had been emerging during the French-Indian War, but now issues of representation, taxation, and liberty began to take center stage. There were fears that Britain intended to enslave them. On Britain’s part, they now had an empire in America which was proving expensive to run and difficult to control. These challenges would eventually lead to the Revolutionary War.

Population Estimation Essays - Environmental Statistics, Free Essays

Population Estimation Essays - Environmental Statistics, Free Essays Population Estimation Population estimation Introduction Estimates of population size play a vital role in many fisheries management decisions. The numbers of fish in a stock are used to identify influences of environmental factors, human exploitation, and ultimately to identify the effectiveness of management strategies. (Van Den Avyle & Hayward 1999) The three most common methods of population estimation among biologist are sample plots, mark and recapture, and removal. Counts on sample plots is based on the principle that an estimate of population size can be obtained by determining the average density of animals per unit area and multiplying its value by the total area covered by the population. This procedure is done by setting up a pre-determined number of circular, square, or rectangular plots. These plots should be randomly placed and should not over lap. This method is used when all members of the target population can be counted with reasonable certainty(Van Der Avyle & Hayward 1999). The formula used with this method is: Where A is the size of the study area, a is the size of the plot, and n is the average number of animals counted per sample plot (Van Der Avyle & Hayward 1999). The mark and recapture method is simply preformed by collecting fish, marking them, releasing them, and at a later time collecting fish from the same area and examining them for marks. This is based on the principle that the number of marked fish in the second sample is proportional to the total number of fish in the population. This is called the Peterson method and the equation is as follows: Where M is the number of fish initially marked and released, C is the number of fish collected, and R is the number of recaptures (Van Der Avyle so several modifications have been made to correct this. One being Bailey's modification which is used when sampling during the recapture period is conducted with replacement. The Chapman method is used if replacement is not taking place. The differences in these three methods would be of little significance if the recapture number exceeds 7 (Van Der Avyle & Hayward). All three of these variations are based on the assumptions that: 1. Marked fish don't lose their marks. 2. Marked fish are not over looked in the recapture sample. 3. Marked and unmarked fish are equally vulnerable to recapture. 4. Marked and unmarked fish have equal mortality. 5. Following release marked and unmarked fish become randomly mixed. 6. There are no additions to the population during the study. If any of these conditions are not met over estimation will most likely occur (Van Der Avyle & Hayward 1999). The third and final method of population estimation is the removal method. This is based on the idea that the number of fish caught per unit of effort will progressively decline as members of the population are removed. The population can be estimated from data on fishing effort and catch rates. The assumptions with this method are: 1. All members of the target population are equally vulnerable to capture. 2. Vulnerability to capture is constant over time. 3. There are no additions to the population or losses other than the removal itself (Van Der Avyle & Hayward). The Leslie and DeLury methods are used in cases when sampling effort my vary among periods. They are used on large populations where the probability of catching an individual fish is low (Kohler 138). The Leslie method assumes that the number of fish caught per unit effort is proportional to the number of fish present at the beginning of the interval. The DeLury method differs in tha t the population estimate is based on total effort rather than cumulative data. The Zippin method is used where the catchability is high and equal effort is expended in each sample period. This is most commonly used in small mountain streams in conjunction with electrofishing as the removal method. Materials & Methods On September 13, 2000 we went to Mull Creek. We set up two stop nets spanning 75m one upstream and one downstream to keep the population contained. We made three runs with electrofishing

Understand the Behaviour of Organisations in their Market Environment Essay

Understand the Behaviour of Organisations in their Market Environment - Essay Example Understand the Behaviour of Organisations in their Market Environment This has enhances shopping for consumers making it even more convenient by providing all products under the same roof. Tesco’s has been working towards building of a sustainable business model throughout the years. This has been done through diversification into new geographical areas as well as value added retailing (Datamonitor, 2011, 7). This has enabled Tesco to reduce its business risk as well as work toward increased sales through trade in growth markets. Similarly, value added retailing encourages consumers loyalty and assist to sustain revenue growth even in times of economic difficulties. However, with increased competition in the UK market, retaining customers would be a crucial concern for Tesco. This has a risk of causing loss of the market share (Finne & Sivonen, 2009, 298). Perfect Competition This is the existence of different buyers and sellers, which implies that prices vary in response to supply as well as demand (Wood, 2008, 187). The market is characterized with substitutes where increase in price of one commodity means a change to consumption of the existing substitute. Both the buyer and the seller are seen to have equal chances of influencing the price. There are two extremes in perfect competition, which include monopoly, as well as oligopoly market. Price and output in a perfect market is determined as shown below. The profit in the firm indicates the level of price and output in three different ways. For a firm to make profits, it will produce at a level where P> ATC, while experiencing losses P< ATC and for it to break even P= ATC. Monopoly In a monopolistic market, there is only a single seller with a number of sellers. The firm is the price maker and therefore, determines the level of output as well as price (Finne & Sivonen, 2009, 298). The firms aim is to maximize profit. Oligopoly Classical theory in economics has the assumption that a producer with some market power whose aim is to maximize profit will set Marginal Cost ( MC) equals to Marginal Revenue (MR) (Finne & Sivonen, 2009, 298). This indicates that the larger the quantity sold the lower is the price. Any change in MC or MR will be indicated by the price. This, however, does not occur where a kink exists. As a result, MC in this case would change without a change in price or quantity. The advantage of this to consumers is that companies will not raise their prices in fear of losing customers (Seth & Randall, 2011, 234). However, even a fall in price will only gain a few customers. This indicates that the curve is price elastic in case of price increase and less for price decrease. In the end, competitive firms will enter the industry. Pestle Analysis Political factors Tesco is an international company with carrying out operations in 14 countries. This makes the organization susceptible to the various legislative and political environments in these countries. This necessitates the compliant to comply with these laws to avoid conflicts with the authorities. In most countries, governments encourage foreign companies to consider local candidates for various posts in the organizations, to ensure locals benefit from their investments. This, therefore, means that Tesco employs a wide pool of individuals to satisfy their labor requirements. Tesco will be compelled to follow the legislation on employment adopted in the country where its stores are located. Economic Factors Economic factors are crucial in the operation of an

Parenting Essay Example | Topics and Well Written Essays - 750 words

Parenting - Essay Example This paper briefly analyses the importance of parenting. According to Dr. Alvin F. Poussaint, "Most children need their parents' help and encouragement to discover the satisfaction of using their own imaginations" (Thoughts for Today). Psychological development of children is as important as the physical development. Many parents- even the educated parents- concentrate more on the physical development of the children and give less importance to the psychological or emotional development. Such parents believe that their duty remains only in giving proper food, clothing and shelter to the children till they become adults. In fact parents’ love, care and attention are more important to the children than the food or other physical things. Growing children do not know how to adapt with its surrounding. He will look suspiciously or anxiously at all new things which may catch his attention. The presence of parents and their advice will help the children in dealing with new situations more comfortably. â€Å"Some parents believe that if they've spent an hour of "quality" time with their children, they've done enough. This hour is usually focused on an enjoyable activity: watching TV going out to eat, going to the movies, etc† (Parenting Tips: Giving Your Children the Gift of Time). Many of the mothers are professionals and they get less time to spend with their children. Infants and children often forced to spend their majority time in the day care centers with nannies rather than mothers. The services of nannies can never be considered as the substitute of mother’s services to a child. In order to compensate for the less time spent with the children; some working mothers have the habit of spending an hour with the children when they come back their home. They are of the false belief that spending an hour as a friend with their children is enough for the proper development of their children. Children need the services of parents rather than friends . If parents give the services of peers, from where the children will get the services of parents? â€Å"Suffice it to say that guilty parenting overcompensates and causes children to view themselves as victims. This happens because children model our behavior and point their fingers at the parent who points the finger at himself† (Parenting Tips: Giving Your Children the Gift of Time). Parents who failed to spend adequate time with their children often try to give more love and care to their children when they get opportunities to spend time with their children. This overcompensation usually do harm to the children rather than goods. Over activities of parents will increase the children’s desire for the presence of their parents further and further. Failure to spend increased time with parents will develop the feeling of victimization among children. According to Frank A. Clark, â€Å"The most important thing that parents can teach their children is how to get along without them† (Parenting Quotes). Making the children self sufficient to meet the realities in life is the core of good parenting. Parents are the first teachers in a child’s life. They consider their parents as the role models in their life. Whatever the things they learned from the parents or family will often reflect in their behavior in society. Society or schools can do little in the molding of children when we compare the roles parents can

D2 Assignment Example | Topics and Well Written Essays - 250 words - 3

D2 - Assignment Example fety, I.5 – The educator shall not intentionally expose the student to embarrassment or disparagement, and I.8 – The educator shall not disclose information about students obtained in the course of professional service unless disclosure serves a compelling professional purpose or is required by law (National Education Association, 1975). Explore the Issue (state the facts): The student diagnosed with ADHD scares the younger children at times. The student has a medical condition that causes this behavior. The teacher of the younger students wishes to know what the issue is with the diagnosed student to be able to better handle the effects on his or her students. Initial ideas to solve the problem: If the student directly affects the students in the other teacher’s class, disclosure is acceptable. If the student does not directly affect the students in the other teacher’s class, disclosure is not needed. Actions can be taken to work with the student who is diagnosed in attempt to mitigate the issue. 3. Work with the other teachers being affected by the student’s behavior, and the student themselves, as well as the parents of the diagnosed student to create an IEP that serves to meet the needs of the student, as well as all of the needs of other students that may be affected through the assistance of all adults involved. Revisit, Reflect and Finalize Solution: The best solution is to work with the administrators, counselors, parents, and other affected teachers to come up with an IEP (Individualized Education Plan), which will afford all students the best possible learning environment, and at the same time, ensure that the needs of all students are being met to the educator’s and to the school’s best