Sunday, September 29, 2019
Friend Vs Family Member Essay
Everyone dreams to have a dear companion. Some find the companionship with the family members. Some find it with friends. There are needs and wants that only a family member or a friend could give. For example, you are in need money or other material things, your family will be the first ones to provide it for you. In addition to that , your family is in charge in the preparation of your meal,household management and the like. When you need someone to talk to and your parents are busy working and your brothers and sisters are busy with studying or doing other things, it is a friend that you should call. Friends, outside of family bonds, can be our greatest comfort and allies. When it comes to keeping a secret, it is the job of a friend. Friends accept us for who we are. They listen when we need someone to talk to. They share the same interest and they are not afraid to tell whatââ¬â¢s on their mind. Most of the times, we cannot share the secret to the other members of the family because they might react negatively on that matter. It is best to keep it with friends. Friends help us to adjust in a different environment just like in school. According to a study done by Buote, results indicated a significant positive relation between quality of new friendships and adjustment to university; this association was stronger for students living in residence than for those commuting to university. The interview data provided insight into the processes through which the relation between quality of new friendships and adjustment occurs. Results are discussed in terms of the importance of new friendships in helping individuals to adjust to a new social environment. Friends may also help you live longer than your family. According to the Journal of Epidemiology and Community Health, researchers suspect that friends may influence people to engage in more healthy behavior, such as not smoking or not drinking too much; friends may also help boost peopleââ¬â¢s self-esteem. Close friends may get the ââ¬Å"longevity nodâ⬠because they are islands of love outside of the bickering, resentments and subtle abuses that occur all too often within many families. On the other hand,there are characteristics that only a family member can do and have. A person is connected to a family member through blood and relation. Accidents may happen and a donor closest to your preferences are your family. You could also solve a family problem like being scolded by constantly communicating with your family. Through communication we can correct bad behavior and internalize rules of good behavior within the family. By the time we are born, our family is with us. Our parents and the other family members guide us through our helplessness as a baby and continuously provides things and advices so that we will be resilient when we reach adulthood. Sometimes, a person can be a family member and a friend to someone. For example,our brothers or sisters often are our most intimate friends. You grew in the same environment , share the same sentiments and interests and you rely on each other when big challenges come. Friends and family members help in the formation of the character of an individual. We are introduced and acquainted with values from our family members and we experience it, learn it and acquire it with friends. According to psychoanalysts,Miss Neumann and Dr. Myerson , in the personality development of the child, the family is perhaps the most important shaping influence. It is of course only one element of the social heritage, only one of a number of groups that influence the child; the school and the play groups are also very important. But the family is first in point of time and, during the more plastic and impressionable ears of child life, provides almost the only stimulations and patterns to which he is exposed. Understanding the importance of the strength of family, and strong relationships, can be a critical tool for youth as they emerge as a good citizen through some of the most influential years of their lives. When the children receive support and understanding from the family members, it will help a lot in his character formation. Moreover,the need for friends continued as they we grew into teenagers and began to find our own identities. Friends were a big part of forming our personalities and supporting who we had become. We cannot choose the members of the family. They are with us when we have nothing and continues to give us everything. Sometimes, we just donââ¬â¢t see their sacrifices for us. We can definitely choose our friends, they are our mirrors. We can determine whom is more important not on being here all the time but who is present when fate decrees your crises. Will your friends stay with you? Or your family? They are put to a test and only you can decide who wins your heart. Works Cited Buote, Vanessa et al. ââ¬Å"The Importance of Friends: Friendship and Adjustment Among 1st- Year University Studentsâ⬠. Journal of Adolescent Research. 2007; 22: 665-689. Cochran, M. , ed. Personal Social Networks as a Focus of Support. In D. O. Unger and D. R. Powell, eds. , Families as Nurturing Systems: Support across a Lifespan. Binghampton, N. Y. :The Haworth Press. 1991. 45-67. Mercola, Joseph. ââ¬Å"Friends May Help You Live Longer Than Familyâ⬠. Journal of Epidemiology and Community Health. July 2005; 59(7):574-9. Radun, Lori. ââ¬Å"Importance of Family Rules in Developing Child Self Esteemâ⬠. < http://ezinearticles. com/> Runner, Jessie R. The Family: Source Materials for the Study of Family and Personality. New York:McGraw-Hill,1931. 73.
Saturday, September 28, 2019
Limiting Reactant Essay
In chemical reactions, the significance of knowing the limiting reactant is high. In order to increase the percent yield of product, increasing the limiting reactant, possibly, is the most effective. In this experiment we were able to calculate limiting reactants from the reaction of CaCl2. 2H2O + K2C2O4.H2O(aq). As a group, we obtained our salt mixture of calcium chloride and potassium oxalate, and weighed the mixture. We were able to make an aqueous solution from the mixture and distilled water. We boiled and filtered off the solution, leaving the precipitate. Once the precipitate was dried overnight, it was weighed and the mass was measured. Then we calculated the moles of the precipitate. From these calculations, we established moles of the limiting reactant, were the same amount of moles in the product based on the stoichiometrically balanced equation. Next the percent yield of the limiting reactant was calculated. In Part B of this experiment, two solutions were added to the aq ueous product in order to determine the limiting reactant. Once each solution was added, we were able to visibly see the precipitate forming when 0.5 M CaCl2 was added. This made us conclude the limiting reactant was in fact CaCl2. Introduction Stoichiometry is a section of chemistry that involves using relationships between reactants and/or products in a chemical reaction to determine desired quantitative data. Doing stoichiometry can calculate masses, moles, and percentââ¬â¢s with a chemical equation. The use of stoichiometry is how we were able to find the limiting reagent in this lab. We know that the limiting reagent is the chemical that will be used up first. Two factors affect the yield of product in a chemical reaction: the amounts of starting materials and the percent yield of the reaction. Under certain conditions such as temperature and pressure, can be adjusted to increase the yield of a desired product in a chemical reaction but because the chemicals react according to fixed mole ratios, only a limited amount of product can form from measured amounts of starting materials. A way for us to better understand this concept of the limiting reactant is to observe the reaction in our experiment. The reaction of cal cium chloride dehydrate, CaCl2à ·2H2O,à and potassium oxalate monohydrate, K2C2O4à ·H2O, in an aqueous solution. For the reaction system in this experiment, both the calcium chloride and potassium oxalate are soluble salts, but the calcium oxalate is insoluble. The ionic equation for the reaction is Ca2+(aq)+2Cl-(aq)+2K+(aq)+C2O42-(aq)+3H2O(l)à ®CaC2O4à ·H2O(s)+2Cl-(aq)+2K+(aq)+2H2O(l) presenting only the ions that show evidence of a chemical reaction, formation of a precipitate, and by removing the spectator ions, no change of ionic form during the reaction, we have the net ionic equation for the observed reaction: is Ca2+(aq)+ C2O42-(aq)+H2O(l)à ®CaC2O4à ·H2O(s). In Part A of this experiment the solid reactant salts CaCl2à ·H2O forms and K2C2O4à ·H2O form heterogeneous mixture of unknown composition. The mass of the solid mixture is measured and then added to water-insoluble CaC2O4à ·H2O forms. The CaC2O4à ·H2O precipitate is collected by gravity filtration and dried, and its mass is measured. In Part B, the limiting reactant for the formation of solid calcium oxalate monohydrate is d etermined from two precipitation test of the final reactant mixture from Part A. The first test we tested the mixture for an excess of calcium ion with an oxalate reagent and the second test the mixture is tested again for an excess of oxalate ion with calcium reagents. Materials and Methods Materials Lab coat Safety goggles 1 250ml beaker 1 piece of filter paper funnel 1-2 grams of salt mixture A hot plate A weighing scale Methods 1. Experimenters obtained one 250 ml beaker and weighed it on the weighing scale and recorded the results 2. The 250 ml beaker was then filled with 1-2 grams of the salt mixture and weighed again 3. 100 ml of distilled water was added to the salt mixture 4. The beaker was placed on the hot plate and brought to a boil then removed 5. After cooling, the experimenters filtered the mixture using the filter paper and funnel 6. Experimenters left the filter paper to air dry overnight 7.The air dried filter paper was then placed on the weighing scale and results were recorded Results In experiment A the results from the precipitation of CaC2O4 H2O from the salt mixture were obtained by weighing the items listed on Table 1 on a scale. Table 1. Mass of Beaker (g) 102.994g Mass of Beaker and Salt Mixture 104.683g Mass of Salt Mixture (g) 1.689g Mass of Filter Paper (g) 1.336g Mass of Filter Paper and CaC2O4 H2O (g) 2.000g Mass of Air-Dried CaC2O4 H2O (g) 0.664g In Experiment B the limiting reactant was determined to be CaCl2 when two drops of the test reagent 0.5 M CaCl2 was added to the supernatant liquid in test tube 1, and a precipitate formed. Since there was a reaction, there was C2O42- in excess and Ca2+ is the limiting reactant in the original salt mixture present in test tube 1 . This was further confirmed when two drops of the test reagent .05M K2C2O4 was added to the supernatant liquid in test tube 2. There was no precipitate because Ca2+ was not present since it was the limiting reactant and instead C2O42- was in excess. Table 2. Moles of CaC2O4 H2O precipitated (mol) .0045 (mol) Moles of limiting reactant in salt mixture (g) CaCl2 .0004 (mol) Mass of limiting reactant in salt mixture (g) CaCl2 .4995 (grams) Mass of excess reactant in salt mixture (g) Ca2C2O4 1.113 (grams) Percent limiting reactant in salt mixture (%) CaCl 34% (34.1%) Percent excess reactant in salt mixture (%) K2C2O4 66% (65.8%) Discussion The data of the mass of the salt mixture was a big key for finding the moles of CaC2O4 precipitated. The molar mass of CaC2O4 H2O was 146.097 grams. The mass of the air-dried CaC2O4 H2O CaCl2, was .664g as recorded in table 1. Using a calculation of .664 x 1 mole / 146.097 a result of .0045 mol was recorded in table 2. The test done in Experiment B allowed us to know without any calculations that Ca2+ is the limiting reactant. This allowed us to conclude that the moles of the limiting reactant were .0004 (mol) of CaCl2. In order to achieve the grams of the limiting reactant, the moles of the limiting reactant must be multiplied by the molar mass of the limiting reactant. Therefore the mass of the limiting reactant was .0045 moles and multiplied by its molar mass of 111g to result in .4995g of the limiting reactant in the salt mixture. Next the mass of the excess reactant in the salt mixture was calculated using the same method as the limiting reactant except the molar mass of the excess reactant was used to result in 1.113 (grams) Ca2C2O4 . The final step in the process was to find the percent by mass of the limiting reactant. Since Experiment B allowed us to determine that Ca2+ is the limiting reactant, therefore to find the percentage composition it is necessary to divide the limiting reactant mass by the mass of the original sample then multiply by 100. This provided a result of 34%, and to find the excess percentage, this value was subtracted from 100 to yield 66% of K2C2O4 as the percent of excess reactant in salt mixture. Error Analysis Possible errors might be attributed to careless errors in reading the scale to measure the mass of the beaker, salt mixture or filter paper. Even whenà proper care is taken in reading the instruments, systematic errors can present themselves in the instrument used to measure mass. Here, a calibrated scale was used to measure mass, and the systematic error is unknown since it is one of the hardest errors to detect. These two sources of errors might help explain the .1% missing from the CaCl2 and K2C2O4 salt mixture recorded in Table 2. Precision and Accuracy While accuracy deals with how close a measured value is to a true or accepted one, precision deals with how reproducible a given measurement is. Here the mass of the beaker, salt mixture, and filter paper are all precise because they are easily reproducible since it simply involves putting the items on a scale. If the process was repeated 50 times the results would not vary or at the least by .0001 grams based on some outside factor. The mass of the air-dried CaC2O4 H2O is accurate because it was calculated as true by subtracting the mass of the filter paper from the mass of the filter paper and the CaC2O4 H2O. Conclusion As we have stated previously, CaCl2 was our limiting reactant based on the precipitates observed. We were able to rule out Ca2C2O4 because of the lack change in our precipitate.. It was important to note that a limiting reactant in a chemical reaction limits the amount of product that can be formed. The reaction will stop when all of the limiting reactant is consumed. The excess is the reactant in a chemical reaction that remains but there is nothing with which it can react. Taking this knowledge we have gained in appropriately observing the results, we can apply it to future experiments in chemistry in order to evaluate how much product one might want to produce in a given chemical reaction. Reviewing other experiments, from other schools, it is apparent that the need for appropriate data collection in this type of experiment, will help in identifying the excess and limiting reagents. As was the case in UCCSââ¬â¢s Chem 103 Lab Manual, following the procedures and doing them in the proper order are vital to ensuring success in proper reactions. References Tro, Nivaldo. Chemistry A Molecular Approach. 3rd ed. Boston, MA: Pearson Education, Inc.; Beran, J. A. Laboratory Manual for Principles of General Chemistry. 8th ed. Hoboken, NJ: John Wiley & Sons, Inc.; 2009 Beran, J. A. Laboratory Manual for Principles of General Chemistry. 9th ed. Hoboken, NJ: John Wiley; 2010 UC Davis ChemWiki. Stoichiometry and Balancing Reactions. http://chemwiki.ucdavis.edu/Analytical_Chemistry/Chemical_Reactions/Stoichiometry_and_Balancing_Reactions UCCS Chem 103 Laboratory Manual. Experiment 3 Limiting Reactants. http://www.uccs.edu/Documents/chemistry/nsf/103%20Expt3V-LR.pdf Masterson, W, Hurley, C. Chemistry: Principles and Reactions. 6th ed. Belmont, CA: Brooks/Cole Cengage Learning; 2009.
Friday, September 27, 2019
Art History 406 Term Paper Example | Topics and Well Written Essays - 1000 words
Art History 406 - Term Paper Example American art of this time depicted nothing more from its paintings but of merchants and planters in a style rooted in European traditions. From the ashes of the war rose two great American painters. Benjamin West was born on October 10, 1738 of Quaker parents in Springfield (now Swarthmore) in the Pennsylvania colony. His talent for painting was developed when as a kid he learned to draw from paints given to him by his Indian friends. At the time there were no art schools or reputable masters with a great collection of paintings for young artists to study, but by the mid-1750s West began to paint portraits in and around Philadelphia (Craven, 2003, p.136). While inà Lancaster, Pennsylvania in 1756, Wests patron, William Henry, a gunsmith, encouraged him to design a "Death of Socrates" based on an engraving inà Charles Rollinsà Ancient History. The painting has been called "the most ambitious and interesting painting produced in colonial America" (Staley, 1989, p. 28). Dr. William Smith, theà provostà of theà College of Philadelphia, after seeing the painting in Henrys house, offered West education and introduced him to wealthy Pennsylvanians and politicians. During t his time West metà the famous painter, John Wollaston, an immigrant fromà London who taught him techniques for painting the shimmer of silk and satin (Hughes, 1999, p. 68). In 1759 West went to Rome, where he spent three years studying the Renaissance and Baroque masters and ancient masterpieces. There he took time to sketch art works like Roman reliefs, more particularly those the Royal Academy with Sir Joshua Reynolds, its first president. Between 1772 and 1801, he was historical painter to King George III. West became one of the first American artists to win a wide reputation in Europe for Agripinna. In the picture, the group forming the center is based on an
Thursday, September 26, 2019
Emersons Nature Essay Example | Topics and Well Written Essays - 500 words
Emersons Nature - Essay Example 2. As is seen from Emerson's work Nature, his approach to natural world is rather idealistic. Nature has a strong relation to divine creation of God, and therefore must be considered as an ideal world. It is not easy for us to see Nature - only children have this ability as their view is natural and virgin. We can consider Nature as a mirror of our spirit as Nature is a real expression of human spirit. Emerson expresses Nature as perfect technology of God, and as people are part of Nature, it should satisfy their needs. Nature gains benefit for people, and even numerous natural calamities are given to us as the result of our behavior. Nature is a real reflection of a human soul, and it has a real linkage with humanity. Art is a reflection of Nature, and human art and self-expression is harmoniously connected with Nature. There is a strong linkage between morality, spirit and Nature. The sense of Nature can be expressed with poetic magical language, and scientific mathematical language fails to express Nature. Emerson also underlined that Nature is real truth, and this truth cannot be limited or wrongly-expressed by people. Nature is initially presented by God as ideal and rational order, and parts of this order are tightly connected to each other. People can influence Nature only by God's will, so we can create nature, but this creation is an expression of the will of God.
Security Solutions for MANETs (mobile ad-hoc networks) including the Research Paper
Security Solutions for MANETs (mobile ad-hoc networks) including the development of IDS - Research Paper Example Moreover, these diverse issues obviously formulate a situation for developing multi-fence safety answers that attain both wide security as well as enviable network performance (Yang, Luo, Ye, lLu, & Zhang, 2004) and (Nash, 2000). This paper presents a comprehensive analysis mobile ad hoc security issues and offers security solutions for MANETs (mobile ad-hoc networks) including the development of IDS (Intrusion Detections System). This paper is aimed at assessing some of the main aspects of the MANETs (mobile ad-hoc networks) technology and possible security issues. This paper also suggests state-of-the-art security solutions in addition to mitigation actions those can be adopted to formulate better security of wireless communication systems. Introduction As the significance of network and computer communication technologies in our everyday life augments it as well poses new requirements for connectivity. However, the traditional wired technology and communication solutions have been there for an extensive era but there is increasing need of operational and working wireless systems and solutions in all the areas of life such as study, using internet, sending E-mail messages, altering data and information in a convention and so on. However, there exist diverse solutions regarding technology systems to fulfill these requirements. In this scenario, solution could be wireless LAN that is designed on the basis of IEEE 802.11 standard.. On the other hand, there is increasing need or demand for connectivity in circumstances where there is no backbone link or else base station accessible, for instance when two or additional Personal Digital Assistants require to be linked (Rashmi, 2008). MANETs (Mobile ad hoc networks) have intrinsically come up with diverse characteristics as compared to the conventional wired arrangement. However, mobile ad hoc networks have attained considerably growing attention, somewhat due to the possible establishment of the Mobile ad hoc networks to countless purposes. On the other hand, network security is still a vital issue in a mobile ad hoc network which is one of its fundamental weaknesses (Jangra, Goel, Priyanka, & Bhatia, 2010). Mobile ad hoc networks can be established at any place without some particular need for outside arrangement (similar to base stations or wires). Since they are frequently mobile and that is why a term ââ¬Ëmobile ad hoc networksââ¬â¢ is frequently employed when talking on the subject of Ad-hoc networks. Moreover, mobile ad hoc networks are frequently expressed as a self-governing system of mobile routers (as well as linked terminals) which are connected to each other through wireless connection, the merger of that shapes a casual chart. In this scenario, th e networkââ¬â¢s routers can be moved randomly and standardize themselves impartially; as a result,
Wednesday, September 25, 2019
American Society - 1920s and 1930s Term Paper Example | Topics and Well Written Essays - 1250 words
American Society - 1920s and 1930s - Term Paper Example It was a period which signified the rise of League of Nations. After elections, the nest President, Harding died and the vice president, Calvin Coolidgetook over the office as president. He was a promoter of moral values and honesty. The United States witnessed an era of excessive prosperity and growth during his reign which was from 1923-1929. The first document is taken from Pathways to the present. It starts with early American history from the time of early European explorers till the development of European colonies. Three different cultures mixed up to form the culture of these new colonies. They included the Native American culture, the European culture and the West African culture. The Native Americans resided mostly in North America. These natives had come from Asia. The beliefs of these Asians were quite different from the beliefs of the Europeans who had come. The picture/cartoon in document 1 shows this clash of cultures. On the one hand there were Africans who were compl etely unsophisticated and Europeans were quite civilized with their own distinct tastes in Music. They were quite well-dressed also. The next picture shows the people of choir discussing the person in the first picture. The person shown is quite tall and huge. He is improperly dressed. Europeans had come to America in search of riches. Their culture was very different. The Europeans, during that time were going through a period of very high economic growth. The renaissance or more commonly called the French revolution was characterized by an outburst of knowledge in European countries and European countries focused more on competition between states rather than kinship or strong fraternal relationships. Thus, the discrimination between Africans and Europeans existed (Cayton, 2007). The culture of the Africans, on the other hand, was based on strong tribal ties and fraternal relations. This was completely at odds with the European culture. Slavery was a part of the African culture. A fricans captured slaves from other tribes. Africans and Europeans continued to trade with each other for sometime but later on, some African people were sold in trading. This gave rise to slave trade. The picture also signifies the clash and disparity. The second document explains the role of women in 1920s. The status of women in 1920s was greatly uplifted. Now the employers were more acceptable to take women as their employees. Previously they were only restricted to clerical roles nut now they had started taking up better jobs. The society at large was becoming broader minded with respect to females. They had started participating in sports and had also started going to different cities for acquiring good jobs. The period following the war was characterized by massive growth as is discussed previously. The author has written this book in such a way that the reader would feel as if he also living in the same era. The third document was written after the First World War when the pe riod of renaissance had actually started. African Americans were of the thought that discrimination against the, would now come to an end, however, this was not the case. Document 4 highlights that the generation following the end of world war had become spoilt with regard to excessive spending as compared to their forefathers who had witnessed the period of war and were hence deemed as frugal by this generation. Animosity between grand parents and grand children also started to grow as grand
Tuesday, September 24, 2019
New Economy and the Service Sector Term Paper Example | Topics and Well Written Essays - 1250 words
New Economy and the Service Sector - Term Paper Example The present paper has identified that countries that fundamentally rely on the service-based economy have advanced economies than those whose economy is not service-based. Nevertheless, the new economy has had an enormous effect on the service sector. In effect, while considering the new economy, this expose is an investigation of the changing scenario in the service sector. In addition, the expose will elucidate on the cardinal principles of service quality. Furthermore, there will be an analysis on how the management of quality can create a much better service offering in organization. New Economy and the Service Sector According to Henwood, the New Economy has its origin between 1996 and 2003. In this regard, Henwood that the finance sector led politicians, businesspersons, economists, journalists, and people to believe that there was an economic change resulting from positive benefits experienced in an extended period. In this case, the developments included advancements in techn ological development, a more focus on work, and enormous global expansions of corporate. In addition, these developments would also include the productivity impact of the technological advancements with an added effect on quality of life (Henwood). Globalization of business and the revolution of the information technology field are the major features of the New Economy (Shepard). In this regard, the New Economy marked the introduction of free trade, market forces, and widespread deregulation in most countries of the world. These countries included former communist countries that disregarded free markets and market forces in their economies. In addition, globalization has led to economic unions growing and becoming more powerful as evidenced by the European Union (EU) and North America's free-trade agreement (Shepard). Nevertheless, the advancements in information technology have led to this revolution. Advancements in technology have become part of our daily lives. From the internet to the faxing machine, cellular phones to computers, these tools have become more than a necessity in human beings life. In this regard, this has led to the digital era in which opening and creation of new industries has become the norm. In this regard, the New Economy emphasizes the need for integrating information technology in businesses in the service sector. As a result, rapid technological changes enhance the capability of businesses in the service sector to get rid of layers of management (Shepard). Consequently, using this technology in the service industries enhances restructuring of industries in the service sector. In effect, this restructuring is crucial to bring efficiency to the service sector due to integration of information technology, which is a feature of the New Economy. Hartley noted that workers in the New Economy engaged in ââ¬Å"knowledge-intensive work and use new information and communication technology to connect to customers and clients around the globe â⬠(qt. in Pupo and Thomas). In effect, this has ensured that the workplace in the service sector has become more flexible. Consequently, flexibility is crucial towards the creation of an enabling environment for enhancing capacity building for more productivity and elimination of hierarchy in the service sector that defined the wages on labor.
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