Essays for Social Networks Essay Example for Free

Essays for Social Networks Essay Through her Amigas: Fifteen Candles novel, author Veronica Chambers demonstrates a picture of perfect unity that enables a group of friends to achieve otherwise insurmountable feats. Such exhilarating togetherness urges the involved parties Gaz, Alicia Cruz, Jamie, and Carmen to selflessly work towards ensuring that their colleague Sarita succeeds in her endeavors. It happens that Cruz encounters Sarita while the former is undergoing her internship. On learning that Sarita is about to celebrate her quincenera the customary fifteenth-birthday coming-of-age party, Cruz willingly offers to help her newfound friend. Consequently, Cruz mobilizes her three friends to assist in organizing Sarita’s party. Through the novel, Chambers explores Cruz impeccable networking skills coupled with her , as well as her three friends’ – utter unselfishness as the four work to make Sarita’s quincenera a vibrant success. For instance, Cruz is depicted to be a very experienced networking agent owing to the speed and precision with which she mobilizes her 3 friends to assist in executing Sarita’s party. To illustrate, after learning of Sarita’s upcoming quincenera, Cruz sets out to inform and persuade her friends to join in this cause. Soon, three friends are working hand-in-hand with both Cruz and Sarita to make the party a resounding success. Through this acts, the four friends demonstrate commendable unselfishness. This is because, although Sarita is relatively new to them, the 4 individuals wholeheartedly dedicate themselves to her cause. Cruz is the most notable unselfish individual because she momentarily sets aside her preoccupation with a just-begun prestigious internship program to give her undivided attention to Sarita’s party. In conclusion, from Chamber’s novel, the selfless nature and commendable unity that Cruz and her 3 friends demonstrate is evident. Thanks to Cruz’s excellent networking skills, the quartet quickly gangs up to aid Sarita in her party preparations. The Secret River by Kate Grenville A man’s undying determination for independence Through her The Secret River novel, author Kate Grenville describes the character called William Thornhill as depicting an endless quest to achieve autonomy. This autonomy is best explained by Thornhill’s desire to be free from poverty that has haunted him all his entire life. For example, a close examination of this character’s troubled life shows that he has endured extreme hardships. To illustrate, Thornhill has been rendered a petty thief due to the poverty that surrounds him. The man has to provide for himself as well as his family despite the shockingly little income that he manages to salvage. He thus engages in acts of petty theft so as to make ends meet. For this socially unacceptable behavior, Thornhill is apprehended, tried, and handed a life sentence that is soon reduced to the requirement that the convict spends his remaining days in Australia’s New South Wales region. Once in Australia, Thornhill demonstrates his true and noble intentions away from the troubles back in London. For example, the convict tries as much as possible to avoid engaging in any type of confrontations with the native Black residents in his new home. In addition, Thornhill strives to acquire and own land that would enable him exercises self-determination besides acquiring other possessions. Through such actions, Thornhill demonstrates that he desires to lead a quiet and peaceful life free from unnecessary troubles. Further, the character has a keen desire to be free from the yoke of poverty that formerly detained him. Grenville thus explores the character’s true identity and inherent peaceful nature. In conclusion, through The Secret River novel, Grenville traces Thornhill’s life history, showing that the character is intrinsically a peaceful and honest individual. For instance, the author shows that extreme circumstances have made Thornhill a dishonest person. Consequently, after being brought to Australia free from London’s hardships, Thornhill demonstrates love for peace and a desire to exercise self-determination. Argumentative essay: Money can break people According to an age-old saying ‘money makes humans mad’. This is especially true if persons allow their insatiable desire for money and associated riches to cloud their reasoning capacities. Consequently, such persons become captive to the allure of money and the associated perils. To name just one negative consequence of this habit, an uncontrolled desire to have more money can make one lose sight of more important things in life such as one’s family. The consequences that result from an inhibited pursuit of money and wealth are usually very disastrous. For example, one may have their marriage or even an entire family disintegrating beyond repair in case the central figure takes to a ridiculous search for money. Examining the very rationale behind one’s pursuit of money shows that an unbridled search for wealth can have consequences that amount to the metaphorical breaking of the person who depicts such a habit. To illustrate, it is obvious that one looks for money so as to acquire life’s necessities, thus making life enjoyable. Further, since no man is an island, every person desires to have pleasant company. Such wholesome companionship is mostly attained in a family setup. The concept of someone losing the very family which, coupled with wealth, would make their lives complete as they search for money thus constitutes a metaphorical breaking of someone. It is thus accurate to say that money breaks people. In conclusion, the ‘money breaks people’ statement takes shape when someone loses their family due to their insatiable greed fore more riches. This is because, the persons have lost one of the most important entities that can help actualize their enjoyment in the so-acquired riches.

Alternate Energy Sources :: essays papers

Alternate Energy Sources WINDMILLS The reason why I chose to do a project on windmills is because I would always drive out to Palm Springs and I would see these huge thing’s that looked like something out of a star wars movie. When I got closer to them I realized what they were. They were windmills. Once I knew what they were I wanted to know what they did, my mom told me that they provide energy. Windmills are made of parts such as the rooter electric generator, speed control system and the tower. When there is a large group of windmills, they are called wind farms. Wind farms are located in deserts. Because wind mill farms are usually in the desert the energy has a long way to travel to get to a town. Some advantages to the windmill is that it’s a renewable source of energy and it’s very cheap, the energy that comes will never run out because the sun gives off convection currents which the energy from windmills will never run out. Another great thing about the wind mill is it needs very low maintenance. Some cons to the wind mill is that they are not as people would like. Because the wind has no rules you can’t always depend on it. You can’t save up wind mills for when there is an energy crisis like right now. People complain that windmills are too noisy, but since not that many people live very close to them its not that big of an issue. A very bad problem with windmills and a sad one is that the blades of the windmills kill lots of migrating birds. In the olden days they used to use windmills for energy to grind grain. In factories they would use windmills to saw wood. During the 1800’s in America people would use the mills to pump water. Wind power is the fastest growing form of energy.

Explaining Laws in Special Relativity :: Science Mathematics Papers

Explaining Laws in Special Relativity Wesley Salmon has suggested that the two leading views of scientific explanation, the â€Å"bottom-up† view and the â€Å"top-down† view, describe distinct types of explanation. In this paper, I focus on theoretical explanations in physics, i.e., explanations of physical laws. Using explanations of E=mc2, I argue that the distinction between bottom-up explanations (BUEs) and top-down explanations (BUEs) is best understood as a manifestation of a deeper distinction, found originally in Newton’s work, between two levels of theory. I use Einstein’s distinction between ‘principle’ and ‘constructive’ theories to argue that only lower level theories, i.e., ‘constructive’ theories, can yield BUEs. These explanations, furthermore, depend on higher level laws that receive only TDEs from a ‘principle’ theory. Thus, I conclude that Salmon’s challenge to characterize the relationship between the two types of explanation can be met only by recognizing the close relationship between types of theoretical explanation and the structure of physical theory. The two leading views of scientific explanation, Salmon’s â€Å"bottom-up† view and the Friedman-Kitcher â€Å"top-down† view, give what appear to be prima facie incompatible characterizations of scientific explanation. According to the bottom-up view, we explain a given phenomenon when we uncover the underlying causal mechanisms that are responsible for its occurrence. The top-down view, on the other hand, maintains that we explain a phenomenon by deriving it from the general principles or laws that best unify our knowledge. In this paper, I focus on theoretical explanations in physics, i.e., explanations of physical laws. I first show that, as Salmon suggests (1989, p. 180-182), it seems promising to treat these two approaches not so much as different views about explanation but rather as descriptions of two distinct types of scientific explanations; there are clear cases of laws that have bottom-up explanations (BUEs) while others receive only top-down exp lanations (TDEs). I then argue, using explanations of mass-energy equivalence in Special Relativity (SR), that this disparity (why should some laws receive only TDEs after all?) is best understood as a symptom of a deeper distinction, first introduced by Newton, between two levels of physical theory. At one level, there is the collection of general principles and definitions of physical terms, i.e., a theoretical framework, from which one derives general constraints for all physical processes. At a lower level, there are laws that identify and describe specific physical interactions like gravitation and electromagnetism.

Cause and Effect Essay Essay

As a child my mom always taught me to be proud of who I am; to disregard all the negativity that was sure to come my way. As a constant reminder she bought books like Black Beautiful Me and Strong and Black to keep up my self-esteem. It was a good reminder, but because of all the negativity that surrounded me I started to feel bad about who I am. I never thought that I would have been a victim of discrimination moving to such an isolated place, but it comes to show that you will never be rid of the negativity in the world. Moving to a small town where African Americans are hard to find; a lot of racism was always targeted towards my sisters and I. Attending School was the hardest part; I always saw myself as being beautiful, but walking down the hall being called â€Å"that ugly black girl† started to take its toll on my self-esteem. Everywhere I went I ran into discrimination and stereotypes; I was constantly asked if I wanted fried chicken or watermelon, I would have guys tell me â€Å"I would date you if you had lighter skin,† or walking in the store and have the word â€Å"nigger† shouted and not know where it originated from. I didn’t understand why I wasn’t liked or given the chance to prove myself, but I felt unwanted, like I didn’t belong. When I had read â€Å"The Myth of a Latin Woman† I found it quite relatable to my situation when I had first moved to Cortez. Cofer talks about how she was stereotyped when she moved to America; how she wanted to fit in, but found it difficult because of her traditions and culture. She stresses the fact that nobody really understood her, that movies about Latin and Puerto Ricans were the closest understanding people got to her culture. Cofer then states that all the hard times that she had growing up made her stronger, and more successful. She tells the reader to take all the negative experiences and turned them positive so that nothing is stopping one from being successful. The negativity was a struggle for me, I wanted to quit public school and start homeschooling. But, I began to learn how to ignore people and not care how or what anybody thought of me. With that idea I became more at peace with myself. I started to look up when walking down the hallways, I learned  to just smile and at the negativity. Instead of the hurtful words putting me down I used it as fuel to my flame, motivation in other words, to do better and be successful.

Cell Phone Usage at Al Ittihad Model School Among Male Students

Cell Phone Usage at Al Ittihad Model School Among Male Students This study will utilize both qualitative and quantitative data since the study variables require that these two types of data be captured during the research process.Advertising We will write a custom research paper sample on Cell Phone Usage at Al Ittihad Model School Among Male Students specifically for you for only $16.05 $11/page Learn More Questionnaires will be used to collect the primary data since the study concerns variables that cannot be directly observed such as opinions, perceptions, and feelings of respondents. Such implicit feelings will only be collected through writing, and the questionnaire will be the best tool to collect both structured and semi-structured questions. The questionnaire will be in two parts. The first part will seek information on the background of the respondents, while the second part will obtain specific information on use of cell phones by the respondents under study. Both set of information collected through this quest ionnaire will therefore be qualitative and quantitative in nature. The data collected through questionnaires will then be entered into a database where statistical analyses will be done. The quantitative data will be analyzed using descriptive statistics and statistical programs such as SPSS while qualitative data will first be coded and then analyzed (Silver, 1993). After the finalization of data entry from the selected samples, the next step will be analysis of the data using descriptive statistics to determine the accuracy of the research objectives and hypotheses. In this case since our research study intends to investigate whether cell phone usage at Al Ittihad Model School among male students has any causal-effects, then my focus will be on analyzing descriptive statistics such as mean, Pearson Correlation Coefficient and Variance and Standard Deviation among others (Silver, 1993). Both variance and the standard deviation are used to measure the variability of a dataset i.e. h ow widely the data is dispersed. The standard deviation is the square root of the variance; this will be relevant for our study since there are numerical data involved.Advertising Looking for research paper on education? Let's see if we can help you! Get your first paper with 15% OFF Learn More Pearson Correlation Coefficient is a measure of linear dependence, referred as correlation between two variables of interest that occurs in a continuous format while mean is the average of a set of scores or measures (Silver, 1993); it is calculated by summing the scores and dividing with the number of observations. Study approach weaknesses Quantitative research method is mainly objective in nature and is largely concerned with research of the quantitative aspect of a study; as such it utilizes statistical tools in data collection, entry and analysis. The most widely used methods of data collection in this case are observations, tests, questionnaire, surveys and use o f existing statistical time series (Hoepfl, 1997). Qualitative research method on the other hand interprets, evaluates gathers and uses qualitative data study methods to examine qualitative facts; this method is very subjective when compared to quantitative method and is usually focused on the wider population than quantitative methods (Hoepfl, 1997). Case studies, observations and interviews are commonly used in collection of data in qualitative designed studies (Hoepfl, 1997). So because each method utilizes different tools in research, then each has also unique strengths and weaknesses and a combination of both approaches is the most ideal research design. Thus, by including both these methods in my research study, I have strengthened my research study. Weaknesses in qualitative research The data analyzed through the use of qualitative method lacks external and internal validity (Austvik, 2009). This is because the information generated is subjective in nature and it is paramoun t for the researcher to subjectively interpret the data including through use of their own experiences. Qualitative research method is mainly subjective; as such the research findings are subject to biasness of the researcher. In this type of research, the information generated may be impossible to validate since a large aspect of it is dependent on the experience of the researcher due to the subjective interpretation of the data that is involved. Data analysis in quantitative research is very challenging and time consuming since the data must first be coded before it can be interpreted. This requires skills and much experience to manage unlike the case in quantitative research A qualitative researcher must use natural setting which will be the context from which the data collection must be undertaken as this is essential because subjects of study in qualitative research cannot be investigated independently from their social environment. This is more challenging, costly and time con suming. Qualitative research lacks uniformity and reliability because responded have an option to ignore some concepts and chose others during data collection. Generally, qualitative research only uses small sample size in the research process since it does not largely base its findings on the sample size as compared to the quantitative research which mostly relies on large samples which is essential in this case because of its research design. The implication is that the data obtained is less reliable in the case of qualitative as compared to that of a quantitative research Weaknesses in quantitative research Quantitative research method is limited in analysis of subjective data since its focus is on numerical values/datasets Quantitative research method is limited in investigation of phenomena that requires postulation of hypotheses since the researchers in this case do not go beyond the data analyzed to find solutions to answers such as why, and how for instance In Quantitative research method it is very challenging to ensure generalization of results because of difficulties in ensuring randomization of sample is achieved and also due to lack of reasonable degree of population validity between the population itself and the selected cases. Plus given that the sample size is not a representative of the whole population.Advertising We will write a custom research paper sample on Cell Phone Usage at Al Ittihad Model School Among Male Students specifically for you for only $16.05 $11/page Learn More Finally, like all research studies, quantitative research method is subject to bias. The major types of bias in quantitative research are undercoverage, non-response bias and voluntary response bias. Undercoverage bias occurs when a sample size does not meet the minimum number of cases of the larger population leading to under representation of the population. Non-responsiveness occurs when significant numbers of sample cases that have alre ady been chosen fails to respond by answering the required information. This compromises the quality of the research study and complicates the data analysis process. Finally, voluntary response bias occurs when sample cases are selected based on their voluntary choice. References Austvik, O. (2009). Strengths and weaknesses related to various empirical methods  in interdisciplinary fields like International Political Economy. Web. Hoepfl, M. ( 1997). Choosing Qualitative Research: a Primer for Technology  Education Researchers. Retrieved from https://scholar.lib.vt.edu/ejournals/JTE/v9n1/hoepfl.html Silver, D. (1993). Interpreting Qualitative Data. London: Sage Publications.

The Hippocampus in the Limbic System

The Hippocampus in the Limbic System The hippocampus is the part of the brain that is involved in forming, organizing, and storing memories. It is a limbic system structure that is particularly important in forming new memories and connecting emotions and senses, such as smell and sound, to memories. The hippocampus is a horseshoe shaped  structure, with an arching band of nerve fibers (fornix) connecting the hippocampal structures in the left and right brain hemispheres. The hippocampus is found in the brains temporal lobes and acts as a memory indexer by sending memories out to the appropriate part of the cerebral hemisphere for long-term storage and retrieving them when necessary. Anatomy The hippocampus is the main structure of the hippocampal formation, which is composed of two gyri (brain folds) and the subiculum. The two gyri, the dentate gyrus and Ammons horn (cornu ammonis), form interlocking connections with one another. The dentate gyrus is folded and nestled within the hippocampal sulcus (brain indentation). Neurogenesis (new neuron formation) in the adult brain occurs in the dentate gyrus, which receives input from other brain areas and aids in new memory formation, learning, and spacial memory. Ammons horn is another name for the hippocampus major or hippocampus proper. It is divided into three fields (CA1, CA2, and CA3) that process, send, and receive input from other brain regions. Ammons horn is continuous with the subiculum, which acts as the main output source of the hippocampal formation. The subiculum connects with the parahippocampal gyrus, a region of the cerebral cortex that surrounds the hippocampus. The parahippocampal gyrus is involved in memor y storage and recall. Function The hippocampus is involved in several functions of the body including: Consolidation of New MemoriesEmotional ResponsesNavigationSpatial Orientation The hippocampus is important for converting short-term memories into long-term memories. This function is necessary for learning, which relies on memory retention and proper consolidation of new memories. The hyppocampus plays a role in spatial memory as well, which involves taking in information about ones surroundings and remembering locations. This ability is necessary in order to navigate ones environment. The hippocampus also works in concert with the amygdala to consolidate our emotions and long-term memories. This process is critical for evaluating information in order to respond appropriately to situations. Location Directionally, the hippocampus is located within the  temporal lobes, adjacent to the  amygdala. Disorders As the hippocampus is linked to cognitive ability and memory retention, people who experience damage to this area of the brain have difficulty recalling events.  The hippocampus has been the focus of attention for the medical community as it relates to memory disorders such as Post Traumatic Stress Disorder, epilepsy, and Alzheimers disease. Alzheimers disease,  for example, damages the hippocampus by causing tissue loss. Studies have shown that Alzheimers patients who maintain their cognitive ability have a larger hippocampus than those with dementia. Chronic seizures, as experienced by individuals with epilepsy, also damage the hippocampus, causing amnesia and other memory-related problems.  Prolonged emotional stress negatively impacts the hippocampus as stress causes the body to release cortisol, which can damage neurons of the hippocampus. Alcohol is also thought to negatively impact the hippocampus when consumed in excess. Alcohol influences certain neurons in the hippocampus, inhibiting some brain receptors and activating others. These neurons manufacture steroids which interfere with learning and memory formation resulting in alcohol-related blackouts. Heavy long term drinking has also been shown to lead to tissue loss in the hippocampus. MRI scans of the brain indicate that alcoholics tend to have a smaller hippocampus than those who are not heavy drinkers. Divisions of the Brain Forebrain - encompasses the cerebral cortex and brain lobes.Midbrain - connects the forebrain to the hindbrain.Hindbrain - regulates autonomic functions and coordinates movement. References Alcoholism: Clinical Experimental Research. (2006, October 25). Heavy, Chronic Drinking Can Cause Significant Hippocampal Tissue Loss. ScienceDaily. Retrieved August 29, 2017 from www.sciencedaily.com/releases/2006/10/061025085513.htmWashington University School of Medicine. (2011, July 10). The biology behind alcohol-induced blackouts. ScienceDaily. Retrieved August 28, 2017 from www.sciencedaily.com/releases/2011/07/110707092439.htm

effects of drugs essays

effects of drugs essays Good morning! To start my presentation, (shut off lights) close your eyes, everyone think of a pleasant experience... walking on the beach, cuddling with a boyfriend or girlfriend, eating chocolate cake... Feel the pleasure Biologically, you are secreting dopamine into the amygdala region of your brain. Receptor sites open up to receive the chemical and cause that pleasure part of your brain to fire. Wow, isnt that nice! Most drugs do exactly this, but at much more intensity. They cause huge amounts of dopamine to flood the amygdala region. Today, I am doing my presentation on the effects of drugs on the brain. Even though drugs effect our body in different ways, it most horrifying effects our brain. Drugs of abuse are valuable tools for brain functions because they can mimic or block actions of neurotransmitters, which in return effects our homeostasis and behaviour. If your curious, drugs of abuse range from alcohol, to nicotine, to marijuana, to cocaine, etc. We have a specific region in our brain, called the amygdala region. This region regulates our feeling of pleasure and can be activated by drugs of abuse. Drugs of abuse produce the feeling of pleasure because they alter the neurotransmitter dopamine, a major brain chemical. Most drugs increase the release of dopamine from the neurons, this makes us feel good (reward us). The increased dopamine levels give drug abusers the rush or a high that they enjoy for a short period of time. The feelings of pleasure the drug creates only lasts for a short time, but drugs can cause changes in the brain that last a very long time. Drugs may alter synaptic transmission by directly affecting the receptors. Some drugs activate receptors, such as the THC, the main psychoactive chemical in marijuana, while others block them, such as cocaine and amphetamines. The synapse is extremely complex, there are a variety of sites at which drugs may effect synaptic ...