Journal #1 Assignment Example | Topics and Well Written Essays - 1000 words - 1

Journal #1 - Assignment Example According to the basic principle of communication, people cannot read the mind, and therefore they judge by the behavior and not the intention. In life, many at times we try so much to hide our reactions towards some communication or not to communicate back (Trenholm & Jensen, 2008). Personally, I tried one time not to communicate back to someone that he may think that I am not affected by whatever he was saying. He was tirelessly trying to irritate me and get into my head with an intention of hurting my feelings. Since I knew his intention, I wanted to pretend that his words had no effect on me by remaining silent, very unlike me. I was very successful at remaining quiet, unfortunately, I could not control the expressions on my face which communicated enough back to him, and I think he enjoyed it that he did not even need my verbal communication. As much as I tried to avoid communication, other forms of communication other than words still communicated whatever I had in mind. This principle explains that one cannot take back what has already been said, this is reference to a proverb which states that one cannot swallow back any word that goes out of the mouth. The effects of the words will inevitably remain (Trenholm & Jensen, 2008). Even in a court situation, if a judge gives an instruction to the jury to disregard the last statement made by a witness, it is perfectly clear to a lawyer that it will still make an impression to them. I remember a situation where I was really angry with my best friend for doing something that I had told him not to, and we got into a heated argument, then I happened to mentioned something that I ended up regretting, but I could not take it back. Since I knew most of his secrets, I made him feel so bad and he almost hated me forever. I wished that I could take back what I had mentioned but it was just impossible. I had to face the consequences of it. The cultivation theory suggests

Trouble With The Terrorist Watch List Database Case Study

Trouble With The Terrorist Watch List Database - Case Study Example For example, airlines utilize information provided by the system of TSA in their lists of selectee and NoFly for passengers prescreening, whereas the customs of U.S and protection systems of borders utilize the watch list data to aid passengers entering the US. Efficient and effective management of data resources is increasingly crucial in this case. Similarly, no policy information has been created to demonstrate the rules of spreading, obtaining, standardizing, categorizing, and sharing information as well as information inventorying, (United States, 2008). Administration of data tends to be poor, and governance of data that would assist companies manages data availability, utility, security and integrity are poor. Government regulations would assist enhances privacy, quality of data, government compliance, and security of data. Additionally, quality of data audits and cleansing are extremely required to reduce the irregularities of number of records counts, number of duplicated r ecords, and number of records without data fields and clear origins. 2. Reasons for creation of consolidated terror watch list and the advantages of the list It was established in reaction to criticisms that various agencies of government were keeping separate lists and that such sectors had no consistent process of crucial information sharing about their people on each list of agency.

Themes of Huckleberry Finn Essay Example | Topics and Well Written Essays - 250 words

Themes of Huckleberry Finn - Essay Example Blacks however, were a different story. The blacks were not free and were kept as slaves. This is shown while Huck and Jim are on the raft. Jim uses the color of Huck’s skin to threaten others; this example was a real life example of how slavery was and how people used it. Since slavery was so powerful and such a large means of life, Jim knows that Huck has an advantage because he is white. As chapters 23- 25 are explored the ignorance of racism begins to be diminished between Huck and Jim. Huck begins to see that Jim is a person just like him. Once he realizes that blacks and whites are the same he can see the true ignorance of racism. This realization is important to the theme since it opens the eyes of Huck which symbolizes much of America. America slowly began to realize that whites and blacks are equal and freedom for the slaves was necessary. Since Huck is able to accept the fact that Jim and he are similar individuals after Jim has been captured, this plays into the themes of the book. Huck begins on a new adventure. This adventure is to free his friend even though he has been taught different. If slavery was not such a huge theme, Huck may not be as motivated to seek his new found friend and stand for

Foundations of Mythology Essay Example for Free

Foundations of Mythology Essay Myths have been a great part of history, from the very moment humans roamed the green marble we call Earth. Therefore, mythology has become just as relevant in attempting to answer lifes greatest questions as any scientific method. Myths have shaped our world from the very beginning to the world we live in today. We will explore the common meaning of myth versus the academic meaning of myth, what are some of the common mythological themes, and the relationship between belief, knowledge, mythology, and religion. Myth is a word commonly used to describe a widely held but false belief or idea, (Google, 2014). As an example, when someone says thats a myth, they are commonly referring to something being false, untrue, or nonfactual. It is in this context that the majority of the population would use and have used the word myth. In an academic context, a myth is an ancient narrative that attempts to answer the enduring and fundamental human questions, (Leonard McClure, 2004, pg. 1). I would define a myth as a statement or  event that is believed in without factual basis. Just because the facts elude us, does not make something untrue or false, merely unproven. If something remains unproven, it should not be considered or perceived as false. After all, if it is not proven to be false, it does not make it true and vice versa. The most common mythological themes are of creation, the birth of order, and secretion themes. Many diverse culture around the globe address such similar and universal themes because they are all attempting to answer the most profound questions. Questions that deal with our existence, the existence of all around us, as well as what occurs upon the death of our bodies. These themes tend to cover the creation of all that exists, the order and mechanics of everything, and why things are the way they are. One commonly overlooked creation myth is that of the big bang theory. There is no factual data that indicates that the big bang occurred millions of years ago, or that it occurred at all, let alone that it will repeat the cycle of condensing all material into a sphere (the size of a period on this page, up to marble sized which is the source of another debate). Truth is that there is more data that points to a young earth, solar system, and universe than there is for millions of years (Creation Today, 2010). There exists an intertwining relationship between belief, knowledge, mythology, and religion whether or not we acknowledge it. Many religions are based on mythology and those in practice of such religions must believe in the knowledge attained from and passed on by centuries of practitioners prior to them. For example, a Buddhist believes he or she will reincarnate to a higher or lower social class depending on their behavior during their current life. This cycle is repeated until enlightenment is attained. This is based on the mythology of Buddha that has become a religion, which millions of people around the globe believe to be truth based on the writings of Buddha himself and the knowledge of all those who came after him. It is this intersection of belief, knowledge, mythology, and religion that has helped countless of people cope with fear of death, or fears in general, with poverty, injustice, suffering, and the unknown. Mythology is still relevant in todays contemporary culture. Although, the word mythology is not commonly used synonymous with religious beliefs, mythology has shaped the modern social cultures. The majority of people have a religious point of view, whether they believe in a god, many gods, or none at all. It is these belief systems that help them to deal with the unknown, hardships in life, and death. Science has been making leaps and bounds in recent years. Nevertheless, modern science cannot pretend to know half of everything, but given that it did know half of everything, is it not possible to have a creator that dwelled in the half we do not know? I dare to comment that it is quite possible, even more so, that it is inevitable. References Creation Today. (2010, May 12). The age of the earth. Retrieved from http://creationtoday.org/seminar-part-1-the-age-of-the-earth/ Google. (2014). Google search. Retrieved from https://www.google.com/?gws_rd=ssl#q=mythsafe=off Leonard, S., McClure, M. (2004). _Myth knowing: An introduction to world mythology_. New York, NY: McGraw-Hill Companies, Inc.

Epic Story Essay Example for Free

Epic Story Essay Epic Story I’d like to call upon the fiction gods to empower this story to be extravagant. The cold storm carried on with its overwhelming booms from the thunder shaking the house from the outside. Terrified, the blond haired Juliet sat in the corner of her darkened closet attempting to go unnoticed by the intruder stalking around her house. She sat there hugging her legs, praying that he wouldn’t hear her soft whimpers of fear. She listened quietly to the footsteps walking around her once safe home. They began to come closer, she could feel her heartbeat pick up, and he began to slowly approach her inadequate closet hiding spot. Her heart began to beat ferociously. Staring up at the door handle, she knew all of her efforts to escape this ordeal unharmed had been abandoned. The handle twisted, she looked for something, anything to protect herself with, and she came up empty handed. Sheepishly, she attempted to cover herself further with her father’s overcoat. The door began to open, she huddled as close to the corner as she could, wishing she could just sink through the walls to safety. She was in tears now, trying her hardest to muffle them, she thrust the jacket into her quivering mouth. Then, with just enough of an opening to see the intruder’s cold murderous eye; it stopped with a loud crash coming from the kitchen. Juliet froze, in anticipation of what was to come next. The intruder left her closet to investigate. Juliet knew this would be her one and only chance to escape; she quietly snuck out of the closet and began to run towards the backdoor. Halfway there she heard the deafening sound of a bullet leaving the barrel of the intruder’s gun. Looking around she caught a glimpse of her mother’s frail body crumple to the ground through the reflection of a mirror. In agony, she pushed herself to go on towards the freedom of the door. She grasped the handle and swung it open. Running out into the rabid storm, she scanned the yard for somewhere safe, glancing behind her, she saw the intruder catch sight of her, she ran as fast as her legs could take her towards the gate, away from this nightmare. Halfway there dividing her from escape, she felt a large mean hand catch her arm and swing her around. Fighting his grip she flailed her arms and punched him, but doing no harm, he dragged her back into the house. With one large blow to the right side of her head, she blacked out. She woke up to throbbing on the right side of her head. Attempting to grasp it, she found her hands were tied together against a pole, along with her feet, and tape over her mouth. She looked around and saw her sister tied up across from across the room, her head hung over. She also saw a large table in the middle of the dirty basement. On the right was a staircase, and coming down it was the intruder. He carried a large tool bag that clanged whenever he took a step. He walked over to her sister, untied her and laid her on the table. While he prepared to harm her sister, Juliet began to fidget out of the chords that held her hostage. She got one hand free, then the other, going unnoticed, she untied her feet. Waiting for the opportune moment, she charged towards the intruder, jumping on his back and strangling his neck with all her might. He was staggering about, he got close to a wall and crashed her into it; she crumpled to the ground in pain. He punched her again, and again, and again, until she was bloody and bruised. At the verge of consciousness, he stopped. Opening her eyes, she saw her sister hitting him with an axe. ~~~ They opened the door and the brightness from outside filled their heart with hope. They walked hand in hand towards freedom. (I figured out this was supposed to be a true story after I finished†¦.. whoops! )

Fill Factor Analysis of Organic Solar Cell

Fill Factor Analysis of Organic Solar Cell Rashmi Swami, Rajesh Awasthi, Sanjay Tiwari Abstract Solar cell is a device used to convert light into electricity. It can be made by organic and inorganic materials. Its most important parameters are open circuit voltage, short circuit current, fill factor and conversion efficiency. This paper is based on the analysis of factors that affect the fill factor of organic solar cell using MATLAB. Fill factor is calculated using conventional organic solar cell model without series and shunt resistances and constant light generated current for two different cases –first using Exponential dark characteristic and second using Polynomial dark characteristic. We get for exponential V-I relationship increase in ideality factor n, will reduce the fill factor and for polynomial V-I relationship increase in m will increase fill factor. A large dependence of light generated current Iph on increasing applied voltage would cause a significant drop in fill factor. Increase or decrease in an additional factor would accordingly change fill factor. Dark current can be varied in two ways, one by varying mobility and other by varying injection barrier heights. In both the cases fill factor increases proportionately with . Keywords – Organic solar cell, fill factor, ideality factor, open circuit voltage, HTL, ETL. Introduction Bilayer organic solar cell as shown in fig. 1(a) is a device in which thin layer of organic material (donor and acceptor) is used between electrodes to convert light into electricity. This work is completely based on bilayer structure of organic solar cell as shown in fig.1(a) in which poly(9,9-dioctylfluorene-co-bis-N,N-(4-butylphenyl)-bis-N,N-phenyl-1,4phenylenediamine) (PFB) is organic donor/HTL and poly(9,9-dioctylfluorene-co-benzothiadiazole) ( F8BT) is organic acceptor/ETL. Fig. 1(b) shows simplest conventional organic solar cell model without series and shunt resistances. Open circuit voltage, short circuit current, fill factor and efficiency are four important parameters of OSC. FF = Vmax Imax / VOC ISC When Vm= VOC and Im= ISC then (FF)max=1. For a good photo-voltaic device, all three factors FF, VOC, ISC should be large so that it can deliver large output power for the same incidental optical power. (b) Fig. 1 : (a) Bilayer organic solar cell structure. (b) Conventional organic solar cell model without series and shunt resistances. Simulation Model and Analysis of Fill Factor Two cases have been studied, one where dark characteristic is exponential like p-n junction and other where dark characteristics is polynomial like in space charge limited devices. 1.2.1Exponential Current Voltage Relationship – In this model, dark characteristic is assumed to follow exponential current voltage relationship and Iph is assumed to be constant. (1) where n is ideality factor and Vth is thermal voltage, Iph is light generated current, Id is dark current and I is net output current. Total output measured current can be written as a function of photo-generated current and dark current. (2) Output power of organic solar cell when it is operating at voltage V and giving current I- If maximum power is obtained at voltage Vm, , here assuming (3) Here y exp(y) is Lambert’s W function (4) and (5) At VOC net output current will be zero. At this condition eq. (2) will give (6) 1.2.2 Polynomial Current-Voltage Relationship In this case it is assumed that dark current depends on the applied voltage in the following manner- (7) Where K is constant and . (8) If photovoltaic is operated at voltage V and output current is I, output power will be- To calculate fill factor, one needs to find out the maximum power which photo-voltaic cell can supply. If maximum power is delivered at voltage Vm This will give, (9) and (10) At VOC net output current will be zero. At this condition eq. (8) will give (11) and (12) 1.2.3 Effect of Dark Current on Fill Factor – Simulation using 1D drift-diffusion electrical modeling of bilayer OSC in MATLAB is done. We obtained that the dependence of light generated current on the applied voltage means that fill factor would depend on it as well besides shape of dark characteristics. An estimate of variation of light current can be obtained by taking ratio of its value at short circuit and open circuit condition – At 0 volt, At VOC, i.e. The ratio is a measure of how drop in Iph with the voltage. This ratio can be written as – Thus shows an additional factor that would affect fill factor. As this factor increases or decreases, the fill factor should accordingly change too. Results and Conclusions Eq. (3) suggests that as ideality factor n is changed, keeping reverse saturation current I0 and photo-generated current Iph constant, Vm changes in such a manner that (Vm/n) remains constant. So Im will also be constant as it is a function of (Vm/n). From eq. (6) open circuit voltage is also changes with ideality factor n such that (VOC/n) remains constant. It follows from the above reasoning that (Im/ISC) and (Vm/VOC) will be unchanged if n will vary keeping the reverse saturation current constant. Hence as ideality factor n varies keeping the reverse saturation current I0 constant, fill factor of the device will remain unchanged. Though if open circuit voltage (VOC) assumed to be constant by varying reverse saturation current I0 as ideality factor n changes, fill factor will change accordingly. Assuming Iph to be 1 mA-cm-2, I0 to be mA-cm-2 and ideality factor n to be 1, open circuit voltage and fill factor come out to be 1.25 volts and 0.9 respectively. Taking Iph and VOC constant, the variation of fill factor with ideality factor n is shown in fig. 2. We get that increase in the value of ideality factor n, will reduce the value of fill factor Fig. 2 : Variation of fill factor with ideality constant n. open circuit voltage and light generated current are taken to be constant as 1.25 V and 1 mA-cm-2 respectively. Eq. (12) shows that fill factor is a function of m. Variation of fill factor with m is shown in fig. 3. For m = 1, FF = 0.25. As m increases fill factor also increases and approaches to 1. However, FF will become only 1 when m is infinity. In this case also, m is a measure of the sharpness of the characteristic curve. As m increases, I-V curve becomes increasingly sharper resulting in a high fill factor. For polynomial dark characteristic with constant light generated current we get that increase in m will increase fill factor which approaches to 1 Fig. 3 : Variation of fill factor with m. fill factor approaches to 1 as m becomes larger and larger. Simulation results revealed in fig. 4 show that light generated current Iph is a function of applied voltage, means FF would depend on it as well besides shape of dark characteristic. A large dependence of Iph on increasing applied voltage would cause a significant drop in FF. Increase or decrease in an additional factor would accordingly change fill factor. Dark current can be varied in two ways, one by varying mobility and other by varying injection barrier heights. In both the cases fill factor increases proportionately with as shown in fig. 5 and fig. 6. Fig. 4 : Dependence of light generated current on the applied voltage. and are the hole and electron mobilities respectively. and are the injection barriers at anode and cathode respectively. Fig. 5 : Variation of fill factor with for 0.1eV and 0.3eV injection barrier heights. Different points have been obtained by changing mobility. Fig. 6 : Variation of fill factor with for carrier mobilities and . Different points have been obtained by changing injection barrier height. References J. A. Barker, C. M. Ramsdale, and N. C. Greenham, â€Å"Modeling the current-voltage characteristics of bilayer polymer photovoltaic devices†, Physical Review B 67, (2003), 075205. D. P. Grubera, G. Meinhardtb and W. Papousekc, Modelling the light absorption in organic photovoltaic devices, Solar Energy Materials and Solar Cells, 87, (2005), 215-223. J. Wagner, T. Fritz, and H. Bottcher, Computer modelling of organic thin film solar cells exciton model of photocurrent generation, Physica Status Solidi A, 136, (1993), 423. Y. Roichman and N. Tessler, â€Å" Generalized Einstein relation for disordered semiconductors implications for device performance†, Appl. Phys. Lett., 80, (2002), 1948. J. C. Scott and G. G. Malliaras, â€Å"Charge injection and recombination at the metal-organic interface†, Chem. Phys. Lett., 299, (1999), 115. S. E. Shaheen, C. J. Brabec, N. S. Sariciftci, F. Padinger, T. Fromherz, and J. C. Hummelen,† 2.5 % efficient organic plastic solar cells†, Appl. Phys. Lett., 78, (2001), 841-843 B. K. Crone, P. S. Davids, I. H. Cambell and D. L. Smith, â€Å"Device model investigation of bilayer organic light emitting doide†, J. Appl. Phys., 84, (2000), 1974. P. W. M. Blom, M. J. M. de Jong and S. Breedijk, â€Å"Temperature dependent electron hole recombination in polymer light emitting diodes†, Appl. Phys. Lett., 71, (1997), 930. C. M. Ramsdale, J. A. Barker, A. C. Arias, J. D. MacKenzie, R. H. Friend and N. C. Greenham, â€Å"The origin of open circuit voltage in polyfluorene-based photovoltaic device†, J. Appl. Phys, 92, (2002),4266. B. Mazhari, â€Å"An improved solar cell circuit model for organic solar cells†, Solar Energy Materials Solar Cells, 90, (2002), 1021.

Timeline of Wars and Reasons for Wars :: History Essays

Timeline of wars/Reasons for Wars Trojan War c. 1200 BC lasted for approx. 9 years Greeks vs. people of Troy Trojan prince Paris abducted Helen, wife of Menelaus of Sparta. The Spartans refused to return Helen to Sparta so Menelaus persuaded his brother Agamemnon to lead an army against Troy. They fought for nine years but never were able to defeat he main city. The Greeks then built a large wooden horse in which warriors were hidden inside. The Greeks appeared to leave and the horse was left at the front gates of the city. The Trojans brought the horse inside the gates and the other Greeks returned at night. The people hidden inside the horse opened the gates for these Greeks and they destroyed Troy. This war could also have another motive as to who controlled trade through the Dardanelles. Punic Wars 264-146 BC Carthaginians vs. Romans The Carthaginians and Romans fought in three different wars over the course of 118 years. Romans fought the Carthaginians to ruin their hold on a chain of islands that would let them control the Western Mediterranean. The Romans wanted to have control. They then fought over land in Italy, particularly Sicily. In the third conflict, Carthaginians tried to save their city and land from being taken over completely by Romans. In these wars, they mainly fought over trade routes in the Mediterranean. Each wanted power and more territorial possession. Crusades (11th Century-13th Century) in the Holy Land The emperor of the Byzantine Emperor was upset with Turks encroaching on his empire. He went to the Pope Urban II and complained. He made up atrocities about the Turks. In 1096, The Pope Urban II promoted the Crusade to reclaim the Holy Land from the barbaric Turks. These crusades lasted till the 13th century. In the process, Jews were persecuted and lots of looting took place. Many countries took interest in the Crusades because they were ready for travel and adventure. They wanted to expand trade with the Middle and Far East and so the Crusades gave them a chance to open up trade routes with those countries. They used Christianity to justify the Crusades. In reality, they wanted to expand trade and gain more territorial land. Chinese History Often countries or leaders try to put too many restrictions on their subjects or territories and then the people rebel.