Negative correlation Essay Example for Free

Negative correlation Essay However, the weakness of this negative correlation raises the notion that the results have no correlation at all. To investigate this possibility I will first try to find how just how weak this negative correlation is. As you can see from graph 2 the different result values for each temperature vary quite a lot from the average. This undermines the accuracy of the results, as the greater the range of the results from the average the less likely the results and therefore the average is accurate. The range of the different results for each temperatures and the standard deviation from the mean can indicate how accurate the results are. This is because, as I have explained earlier the range and the deviation of the results from the mean determines how accurate the results are. Graphs 3 and 4 show how the standard deviation and the range of the results change over the temperature range used in the experiment. In graph 3 the range was calculated by subtracting the lowest value from the highest, and in graph 4 the standard deviation was calculated using the formula; ? ((? (x -? x)/n) (where x = the values and n = the number of values). Graph 3 and 4 show that in general the accuracy of the result increases with an increase in the temperature, and that at low temperatures the results are not very accurate at all. I can conclude this as, the bigger the standard deviation or range the less accurate the results are. In both graphs 3 and 4 the general pattern shows high range and high standard deviation at low temperature (high inaccuracy) and low range and low standard deviation at high temperatures (low inaccuracy). This therefore contradicts my earlier theory that the inaccuracy would increase with an increase in the temperature, however it must be taken into account that the results are very inaccurate already. Because of this inaccuracy the results may have had a certain random element in them, evidence for this is in the fact that the results are very inaccurate (they have a large range and a large standard deviation), and that the inaccuracy varies a lot from its trend line (see graphs 3 and 4). So in conclusion, I think that the results of this experiment were not accurate at all and not accurate enough to draw any sound conclusions that are backed with scientific theory/knowledge. In fact I think there was a certain random element in the results that contributed to the inaccuracy of the results. Because of the inaccuracy of the results, I feel that it is not a good idea to use these results as a basis for any conclusions, especially as these conclusions cannot be backed up by any scientific knowledge. Therefore with only the results I have at this moment, I have to conclude that the resistance is directly proportional to the temperature. I can conclude this because I have decided to use scientific knowledge as a basis for the answer to this correlation. I have done this because the results I have are too inaccurate to use for making any judgements on this correlation. Evaluation: So far I do not think this investigation has gone very well because of the very inaccurate results, however with the large amount of scientific knowledge I have been able to come to a conclusion to this investigation that has a lot of backing. My prediction was of corse correct. The reason to this inaccuracy in the results is, in my opinion due to the large amount of contacts and wiring used in this method. Some components react to temperature by changing the resistance in different ways, most components react in a directly proportional linear way, but some components like a filament lamp or diode react in a directly proportional but logarithmic way and/or only at certain voltages. It is quite likely that in the multi-meters there were some of these components that react in a logarithmic way and at certain voltages. This means that the current flowing through the circuit would be affected out of proportion by these components, therefore affecting the resistance. Although the affect of these components would have been neutralised if one multi-meter were used, it might not be neutralised if two multi-meters were used as they were in this method. The large amount of wire used in this experiment has meant the current could have been easily affected by other variables that I did not take into account, like a change in the room temperature, or if I accidentally spilt some water onto the wires. Also like the different depths used in the water bath, or a magnetic flux from the high voltage used in the kettle. Due to the large amount of outside variables that can affect the large amounts of wire used, I have to conclude that the large amounts of wire used in this method was the main cause of the inaccuracy of its results. I cannot estimate how accurate my results are because I have no basis on what the true values are, only that the correlation is directly proportional. If I were to repeat this investigation, I would change the method so that less wire was used and only one multi-meter was used, I would also change the method so as to stop any of the variables mentioned in this evaluation affecting the results. If possible I would try and use a more accurate multi-meter in my experiment. A more accurate multi-meter will give me more accurate results; the reduced amount of wire to be used will reduce the effect of outside variables and make the results more reliable. I dont think I need to do any extra research, as I have more than enough scientific backing for any conclusions I will have to make if I repeat this investigation.

I Am a Ponarvian :: Personal Narrative Essays

I Am a Ponarvian Some of you have already scoured the dictionary in vain for a definition of the word "Ponarvian." One of my greatest ambitions is to get this word safely into Websters where it belongs. Until that happy time, the following definition will have to do: PONARV (PO narv) n. [acronym] A project of no apparent redeeming value. Hence, Ponarvian: one who pursues such projects. It is my contention that not some, but MOST of the greatest human triumphs in art, science, and technology have their root in the humble ponarv. All ponarvians, whatever their age, are children who simply like to play. If you ask them to justify their behavior, they will be unable to do so, or will provide what can only be described as a playful response. Basically, they just can't help it. They like to play. Throughout history, all great ponarvians have been surrounded by suffocating masses of anti-ponarvians. The anti-ponarvian is a gloomy person who divides the world into work and play, and who sees play as a regrettable lapse in the vital and unceasing pursuit of work. They define work as an activity which leads DIRECTLY to something valuable, and the only things they value are those things like food and shelter which enable them to survive long enough to procreate and produce more workers. To an anti-ponarvian, play is like sleep, a biological necessity which interferes with work and should therefore be minimized. They love to recite the fable of the grasshopper and the ant but never stop to consider that this story was written by an ant. They are the early birds: up at the crack of dawn, catching worms. Poets and pure mathematicians are ponarvians by definition. Mathematicians are sometimes forgiven by the anti-ponarvian masses because the equations they drop to one side in their foolish pursuit of elegant theorems and pleasing symmetries can be used to build factories which produce canons which can then be used to level factories (canons and factories are "useful"). But poets are eternally damned in the eyes of the anti-ponarvians because, after all, there is no money to made in poetry. It is one of nature's greatest ironies that these very poets and mathematicians so despised by the anti-ponarvians, these idle dreamers and crackpot inventors, are the very source of all the gadgetry and innovation which anti-ponarvians hold in such high esteem. I Am a Ponarvian :: Personal Narrative Essays I Am a Ponarvian Some of you have already scoured the dictionary in vain for a definition of the word "Ponarvian." One of my greatest ambitions is to get this word safely into Websters where it belongs. Until that happy time, the following definition will have to do: PONARV (PO narv) n. [acronym] A project of no apparent redeeming value. Hence, Ponarvian: one who pursues such projects. It is my contention that not some, but MOST of the greatest human triumphs in art, science, and technology have their root in the humble ponarv. All ponarvians, whatever their age, are children who simply like to play. If you ask them to justify their behavior, they will be unable to do so, or will provide what can only be described as a playful response. Basically, they just can't help it. They like to play. Throughout history, all great ponarvians have been surrounded by suffocating masses of anti-ponarvians. The anti-ponarvian is a gloomy person who divides the world into work and play, and who sees play as a regrettable lapse in the vital and unceasing pursuit of work. They define work as an activity which leads DIRECTLY to something valuable, and the only things they value are those things like food and shelter which enable them to survive long enough to procreate and produce more workers. To an anti-ponarvian, play is like sleep, a biological necessity which interferes with work and should therefore be minimized. They love to recite the fable of the grasshopper and the ant but never stop to consider that this story was written by an ant. They are the early birds: up at the crack of dawn, catching worms. Poets and pure mathematicians are ponarvians by definition. Mathematicians are sometimes forgiven by the anti-ponarvian masses because the equations they drop to one side in their foolish pursuit of elegant theorems and pleasing symmetries can be used to build factories which produce canons which can then be used to level factories (canons and factories are "useful"). But poets are eternally damned in the eyes of the anti-ponarvians because, after all, there is no money to made in poetry. It is one of nature's greatest ironies that these very poets and mathematicians so despised by the anti-ponarvians, these idle dreamers and crackpot inventors, are the very source of all the gadgetry and innovation which anti-ponarvians hold in such high esteem.

Decolonization and Revolution Essay

From 1945 and beyond, leaders have selected different paths to affect change. Some encouraged independence through violence, peaceful actions, diplomacy, and the commitment of their struggling nation. Others sparked revolutions by appealing to the peoples’ needs. Through policy, and sometimes uniting a people, trailblazers changed the face and structure of their nation. A column from a journalist during the time period would help to see a broader perspective during such varying and exciting time. Decolonization, revolution, and nation building are all goals of any effective leader willing to make a change. Spanning from 1945 to 1975, countless independence movements have changed societies across the globe, led by leaders and organizations who all yearned for better. The â€Å"Declaration Against Colonialism,† adopted by the United Nations, took a firm stand on the demise of colonialism. The document petitioned for a definite end to colonialism and encouraged self-determination, stating that all human beings have a right to their own societal and political choices. Such a statement coming from an organization comprised and backed by countless nations surely stands its ground. The United Nations, supporting the end of colonialism, inspired countries to strive for freedom through the organizations obvious power. It also displayed the end of a colonial era, seeing as though many colony-yielding nations were members of the UN. (Doc 1). Ho Chi Minh, Vietnamese nationalist, too felt the need for freedom. Minch expressed the Vietnamese’s determination to end French colonization i n their country. Minch made it clear that violence would be condoned and encouraged to win this battle. Ho Chi Minch embodied Vietnams’ fighting will for a separation and willingness to shed blood in the process. (Doc 2). In a similar suit, Jomo Kenyatta of Kenya shared his hate for colonialism and his approval of violence. He claims that Kenya belongs to its inhabitants, not colonizers who held his people back. Kenyatta believed that the only way to approach self-rule is through bloodshed. (Doc 6). Mohandas Gandhi of India had a quite parallel approach. From an excerpt written by him, it is seen that  Gandhi believed the path to independence was paved with nonviolence and self-sacrifice. Gandhi in many ways led Indians to Independence. Even after his death, he was a guiding light for those who coveted an India without the British. (Doc 3). Kwame Nkrumah, leader of Ghana’s independence, expressed his goal dismay for colonialism. He saw the system as contractual and exploitive to his country. He calls the independence movement â€Å"the greatest awakening ever seen on this earth†. By portraying colonialism as a heinous and abusive practice, Nkrumah led Ghana to independence. (Doc 5). A letter from the British monarchy as a response to colonial independence would give insight as to whether they see themselves as negatively as their colonies do. In South Africa, China, and Cuba, social and political revolutions pioneered by inspiring people occured. Nelson Mandela, speaking on his fight against apartheid, conveyed his commitment to the cause. Mandela dreamed of a South Africa where equality and democracy was not a scarcity. Unfortunately, his reality at the time was far different. Nelson Mandela was willing to die for the cause. His dedication inspired others to continue to fight for justice in South Africa. This infectious determination is was enabled Mandela to lead the campaign for termination of this policy. (Doc. 4). In China, Mao Zedong led his country to the communist revolution. In a speech he delivered, he vocalized a goal to build faith in the party. The method applied by Zedong focused on uniting China under one belief in order to implement communist ideas in the country, widely changing the country’s structure. (Doc 7). At his defense trial, Cuban revolution leader Fidel Castro appealed to those struggling in his country. He spoke to those who hoped for a brighter future and who have been betrayed by their country. By addressing their battle, Castro urged them to fight for a better Cuba. His relentless and undying commitment ultimately granted Castro his wish for a revolution. (Doc 8). An additional document consisting of a diary entry from a Chinese citizen during the communist revolution would create a clearer vision as to how convincing Mao Zedong truly was. Some modern leaders look more inward as to their nations’ policies and people to affect change. Hosni Mubarak, former President of Egypt, aimed to unite his country and better certain systems to strengthen the nation. When in a hard and confusing time, Mubarak provided Egypt with a steady guiding hand. In the midst of this chaos, instead of addressing the questions and wants of the people, Hosni Mubarak demanded they offer themselves to supply the needs of their country and support their leader. This mindset calmed Egyptians as Mubarak reopened Egypt to the Arab world, tried to reaffirm the constitution and judicial system, and tackled social issues. (New Leaders of Nations #1). Former prime minister of India Narasimha Rao was first questioned by the Indian people as to his ability to lead. This was turned around as he implemented many policy changes in India. India, fairly unfamiliar with outside involvement, now encouraged foreign investment. Rao’s programs for economic growth and investment, both foreign and Indian, faced opposition from possible disorder. However, Rao’s use of intellectual thinking and a new, open India, aided his decisions. A documentary depicting evolving countries as they face modern challenges would be helpful in grasping what qualities leaders who create change possess. Those who create ripples of change in their societies all have varying methods and roles. Some strive for revolution, others independance or policy reboots. It is important to keep in mind that each situation creates unique circumstances; some changes require new methods. To further understand which methods are suitable for particular situations, letters from different leaders who have created change would be helpful.

How to Report Child Pornography

It is illegal to own or to create child pornography in the United States and to distribute it. Child pornography is generally defined as sexualized photos or videos of children under 18 or of children under the age of 18 performing sexual acts. There is no free speech, or First Amendment, protection for child pornography. The National Center for Missing Exploited Children (NCMEC) refers to these images as child sexual abuse imagery (CSAI), which the organization believes most accurately reflects what is depicted: the sexual abuse and exploitation of children. If you encounter child pornography either online or through the U.S. mail, it is important to report the crime to the proper authorities. Online   If you encounter child pornography on the Internet, you can report the site address to your internet service provider and to your local or state FBI or Customs office listed in your hardcopy telephone directory or online. Federal law requires that U.S.-based service providers report instances of apparent child pornography to the NCMEC’s CyberTipline.   You can also report child pornography online by sending the site address directly to the NCMEC at cybertipline.com. NCMEC will forward your report to the appropriate investigative agency for follow-up. To collect the address, or URL, of a child pornography website, click on the address in your browsers address bar to highlight and select it, then paste it into a text file or email message. U.S. Mail Sending images of child pornography through the U.S. Mail is a violation of federal law. Such pictures are not constitutionally protected speech; they are evidence of the sexual exploitation. If you have information about the use of the U.S. Postal Service to send child pornography, contact the U.S. Postal Inspection Service listed in your telephone directory or online. Why Report It If you happen upon an image of child porn online, you might think that there is no point in reporting it because the image could have come from anywhere in the world. If you believe no one could track down those involved in its creation, youre wrong. FBI investigators are skilled at the type of forensic investigation required  to track down the people producing these images. There have been cases in which investigators used the wallpaper and bedsheets in the images to identify the hotel being used by a ring of child pornographers. By reporting child pornography when you see it, youre raising the chances that a child could be saved or that evidence could be found to put someone who hurts children behind bars. Prevalence As of November 20, 2018, the NCMECs CyberTipline had received 42.9 million reports of CSAIs. The organizations Child Victim Identification Program (CVIP) had reviewed more than 267 million images and videos, and nearly 16,000 victims had been identified by law enforcement. Other Tips The U.S. Postal Service offers these additional tips for protecting children from sexual exploitation: Report suspicious activity, even when you just have a â€Å"gut feeling† that something doesn’t feel right.Never share personal information online, such as addresses, phone numbers, school names, information about friends, or email addresses.Use security software, including filtering or monitoring software, for all your computers and devices.Talk with your kids and encourage them to talk to you about their online activities. Sources The Scourge of Child Pornography. FBI.Sexual Abuse Imagery. National Center for Missing Exploited Children.