Statistic paper 1 Essay Example | Topics and Well Written Essays - 1000 words

Statistic paper 1 - Essay Example How does a consumer know which one contains the lowest calorie amidst so many brands? This assignment establishes facts that will help customers navigating through the aisles in search for cereal of deserved calorie. This will be achieved by establishing a population mean of calories of 100 gram of cereals regardless of cereal brands. Should a customer plan on finding a cereal packet that contains calories lower than the mean, the customer would need more time to find it than the packet with the mean value. Data Collection Breakfast cereal population, in this case, is different brands that are available at the website the calorie counter (â€Å"The Calorie Counter†). The data of each sample represents the published calorie value of 100 grams of breakfast cereals. Therefore, sample unit for this study is breakfast cereal, and the response unit is calorie per 100 gram. The population study reveals that General Mills, Kellog, Kraft, Malt – o- Meal, and Quaker companies are principal manufactures of the breakfast cereals (The Calorie Counter). General Mills produces 48 brands, Kellog produces 40 brands, Kraft produces 24 brands, Malt – O – Meal produces 9 brands, and Quaker produces 44 brands. The population consists of 165 brands. The study uses samples of 30 individual breakfast cereals selected randomly from this population. The population consists of 5 strata. This study uses stratified sampling technique to collect sample data. Numbers of samples from each stratum are calculated using the formula; (Population of the stratum / entire population) x 30. Sample size, n = 30 is determined on literature review for determining the sample size for statistical analysis (â€Å"30 Samples†). Description and Presentation of Data This research uses retrospective observational quantitative data; variables with numerical values. Quantitative data have two classes: discrete and continuous. If a variable can take values between a minimum and maximum, it is called continuous variable otherwise it is discrete. Based on the above discussion this assignment will use continuous quantitative data. The sample data of this assignment is presented using stem and leaf, and array tables. Stem and Leaf Table. It presents data in all of its detail. It describes the range and relative frequency of each value in the set. The stem and leaf table helps determine the best grouping level for a frequency histogram. In this assignment, the each value of sample data set consists of three digits. Raw data set is rearranged in an ascending order; first two digits are considered the stem and corresponding leafs are counted for each stem. Table 1 displays the values of the data set in the form of stem and leaf. Table 1. Stem and Leaf Data Distribution Total 31 1 1 32 0 3 2 33 2 4 2 34 0 1 35 0 2 2 36 5 1 37 0 3 3 6 8 5 38 0 1 3 3 7 7 6 39 0 1 2 3 6 6 6 40 0 9 2 41 2 5 2    Subtotal 30 Array Table. It is arranged to present data in a tabular fo rm of columns and rows. Table 3 displays data in ascending order in an array. Data are arranged in three rows, and each row consists of 10 columns Table2. Array Form Data Distribution 1 2 3 4 5 6 7 8 9 10 311 320 323 332 334 340 350 352 365 370 373 373 376 378 380 381 383 383 387 387 390 391 392 393 396 396 400 409 412 415 Histogram. Table 2 displays sample data in the array form. The minimum value is 311, and the maximum value is 415. The

The trouble with Lichen. novel by John Wyndham and Short circuit movie Literature review

The trouble with Lichen. novel by John Wyndham and Short circuit movie - Literature review Example â€Å"The trouble with Lichen.† by John Wyndham. The plot of the novel takes the reader from the lab where the doctor, Saxover Francis, with his assistant, Brackley Diana extract the drug from the Lichen to the time when she has to make a run for her life when the secret about the drug leaks into society and her life is threatened. She eventually fakes her own death in order to avoid the death. Ironically, her product is actually supposed to avert death- at least for three hundred years. The movie is about a company that develops a set of five robots. The robots were originally intended to carry out some mundane activities like playing of musical instruments and others. They are named number one through to number five. After Newton Graham has finished developing the robots, he goes to demonstrate them to the other company at the grounds. His demonstration is however abruptly interrupted by a storm. It was while he was still evacuating the robots that one of them was struck by electric current. The electric current causes a â€Å"short circuit† and ultimately changes the instruction codes in the robot. This, as we later find out, gives the robot life. The two pieces are both science fictions that are somewhat related. They both predict on future innovations that actually took place many years down the line. Even though man has not yet found a solution to ageing that would make him attain the age of here hundred years, there are at least some drugs that are being used to control ageing to a significant degree. Consequently, the prediction made in short circuit have also come to see the light of day. There are much technological advancement in the ICT field that can be comparable to the ideas propagated in short circuit. The main reason why I chose this novel and this movie is the fact that they made some interesting predictions about the innovations in the future and the innovations eventually came to be. The other reason is the fact that they both took a realistic approach as far as how society responds to new inventions is concerned. The Trouble with Lichen This is a novel about a young lady who is working as a biochemist and wh o in the course of her day to day duties, stumbles upon a certain strain of Lichen that can actually be used to reverse the aging process in humans. It is from this Lichen that the novel draws its title, â€Å"trouble with lichen.† Supposedly, this strain of lichen can be used to lengthen the lifespan of an average human being to anything from two hundred up to three hundred years. The author of the novel approaches the issue by speculating on how the wider society would deal with such a discovery. There are two main characters in the plot of the book. The first is Brackley Diana and the second one is Saxover Francis. Both are biochemists who are involved in research. Saxover is a doctor and Diana is his employee. They are doing independent experiments to investigate the characteristics of certain strains of Lichen. Diana stumbles on a life transforming discovery when she notices that a certain strain of the lichen prevents milk from turning sour. The strain of Lichen that sh e discovered was rare and it actually originates form East Asia. She works tireless with the help of Francis Saxover and two eventually manage to extract a new drug from the Lichen. They call this new drug antigerone. Antigerone can be used to slow down ageing in the human body. Francis decides to secretly use the medicine on his family members and on himself to prevent their ageing. On the other hand, Diana sets up a spa and cosmetic business and starts using the product on a number of rich and

Statistic paper 1 Essay Example | Topics and Well Written Essays - 1000 words

Statistic paper 1 - Essay Example How does a consumer know which one contains the lowest calorie amidst so many brands? This assignment establishes facts that will help customers navigating through the aisles in search for cereal of deserved calorie. This will be achieved by establishing a population mean of calories of 100 gram of cereals regardless of cereal brands. Should a customer plan on finding a cereal packet that contains calories lower than the mean, the customer would need more time to find it than the packet with the mean value. Data Collection Breakfast cereal population, in this case, is different brands that are available at the website the calorie counter (â€Å"The Calorie Counter†). The data of each sample represents the published calorie value of 100 grams of breakfast cereals. Therefore, sample unit for this study is breakfast cereal, and the response unit is calorie per 100 gram. The population study reveals that General Mills, Kellog, Kraft, Malt – o- Meal, and Quaker companies are principal manufactures of the breakfast cereals (The Calorie Counter). General Mills produces 48 brands, Kellog produces 40 brands, Kraft produces 24 brands, Malt – O – Meal produces 9 brands, and Quaker produces 44 brands. The population consists of 165 brands. The study uses samples of 30 individual breakfast cereals selected randomly from this population. The population consists of 5 strata. This study uses stratified sampling technique to collect sample data. Numbers of samples from each stratum are calculated using the formula; (Population of the stratum / entire population) x 30. Sample size, n = 30 is determined on literature review for determining the sample size for statistical analysis (â€Å"30 Samples†). Description and Presentation of Data This research uses retrospective observational quantitative data; variables with numerical values. Quantitative data have two classes: discrete and continuous. If a variable can take values between a minimum and maximum, it is called continuous variable otherwise it is discrete. Based on the above discussion this assignment will use continuous quantitative data. The sample data of this assignment is presented using stem and leaf, and array tables. Stem and Leaf Table. It presents data in all of its detail. It describes the range and relative frequency of each value in the set. The stem and leaf table helps determine the best grouping level for a frequency histogram. In this assignment, the each value of sample data set consists of three digits. Raw data set is rearranged in an ascending order; first two digits are considered the stem and corresponding leafs are counted for each stem. Table 1 displays the values of the data set in the form of stem and leaf. Table 1. Stem and Leaf Data Distribution Total 31 1 1 32 0 3 2 33 2 4 2 34 0 1 35 0 2 2 36 5 1 37 0 3 3 6 8 5 38 0 1 3 3 7 7 6 39 0 1 2 3 6 6 6 40 0 9 2 41 2 5 2    Subtotal 30 Array Table. It is arranged to present data in a tabular fo rm of columns and rows. Table 3 displays data in ascending order in an array. Data are arranged in three rows, and each row consists of 10 columns Table2. Array Form Data Distribution 1 2 3 4 5 6 7 8 9 10 311 320 323 332 334 340 350 352 365 370 373 373 376 378 380 381 383 383 387 387 390 391 392 393 396 396 400 409 412 415 Histogram. Table 2 displays sample data in the array form. The minimum value is 311, and the maximum value is 415. The

Arizona v. Hicks, 480 U.S. 321, 1987 U.S. Lexis 1056 (1987) Assignment

Arizona v. Hicks, 480 U.S. 321, 1987 U.S. Lexis 1056 (1987) - Assignment Example He was informed that one of the equipment, a turntable, had been stolen in an armed robbery, so he seized it and got a search warrant to search the rest of the apartment. It was then discovered that some of the other stereo equipment had also been stolen in an armed robbery, for which the respondent was subsequently indicted. The main issue in this case is whether the initial entry into the respondent’s apartment, and the subsequent recording of the serial numbers on the stereo equipment constituted a violation of Fourth Amendment rights. This issue is a decision on whether the evidence had been seized illegally, and so should be suppressed. The issue is also, whether the exigent circumstances of the initial entry into the apartment allowed for the seizing of evidence related to a non-exigent matter; the stolen stereo equipment. Originally, the state trial court held that the evidence used in the case had been seized; therefore, they granted the respondent’s motion to suppress the said evidence. This decision was also upheld by the Court of Appeals of Arizona, who conceded that the initial entry to the respondent’s living quarters was justified by the exigent circumstances of the case. However, the subsequent obtaining of the serial numbers from the stereo equipment qualified as an additional search not covered by the initial exigent circumstances. The Arizona Supreme Court subsequently affirmed the decision. Going by a statement in Mincey v. Arizona, 437 U.S. 385 (1978) that a search not supported by a warrant must be strictly supported by the exigent circumstances following the search, the court decided to uphold the suppression of evidence. The Supreme Court reasoned that the police violated the respondent’s Fourth Amendment rights when they embarked on a search not justified by the first facts. The court also reasoned that the police’s actions were not justified by the plain view doctrine, since the officer who recorded the serial

Effect of Ionic Pollution on Aerosol Nucleation

Effect of Ionic Pollution on Aerosol Nucleation EFFECT OF IONIC POLLUTION ON AEROSOL NUCLEATION  AND CLOUD FORMATION ABSTRACT Atmospheric aerosol particles have a strong impact on the global climate and that is the main reason for many observed events of new aerosol formation being not understood. Forwarding, to explain these events one of the theory put is that the presence of ions can enhance the formation of aerosols in the atmosphere. This theory is called ion induced nucleation and in this paper, the state of observations and theory within the field is reviewed. While evidence for ion induced nucleation is accumulating the exact mechanism is still not known and more research is required to understand and quantify the effect. Keywords: Atmospheric aerosols, climate change, ion nucleation, nucleation rate, bulk nucleation Shivani Avasthi Deptt. Of Physics, Raj Kumar Goel Institute of Technology Ghaziabad U.P. [emailprotected] INTRODUCTION The role of ions in the production of aerosols is among the least understood, but potentially is an important process in the Earth’s atmosphere. Observation has shown that the nucleation of aerosol particles can occur under conditions that cannot be explained by classical nucleation theory [8]. Several ideas have been put forward to solve this nucleation problem, e.g. ion-induced nucleation [11, 13]. However, experimental investigations exploring the role of ions in particle production are scarce and often at conditions far removed from those relevant for the lower part of the atmosphere [1]. Since production rates at the size of 3 nm were observed to be 1–10 cm-3s-1, and numerical simulations yielded nucleation rates of initial stable clusters (approx. 1 nm) around 0.1–1 cm-3s-1, it is suggested that ions are active in continuously generating a reservoir of small thermodynamically stable clusters that can then rapidly grow in the presence of condensable vapours [9, 10, 12]. These results demonstrate that ions probably play an important role in the production of new aerosol particles in the Earth’s atmosphere. The chemical composition of aerosols is widely varied from largest size of fine mineral dust, to soot, to sulphate and nitrate salts. Human activities, especially fossil fuel burning, produce a lot of aerosols. In general, aerosols are more abundant over continents than over the oceans, which have consequences in form of the clouds that form there. Because aerosols interact with radiation and are crucial to cloud formation, they can strongly affect climate. Not all aerosol particles can be used to form a cloud droplet: certain criteria apply. Those aerosols meeting these criteria are called cloud condensation nuclei (CCN). There are 2 types of aerosol which can act as CCN: The aerosol is insoluble but wettable (or hydrophilic), and sufficiently large. A surface is wettable when water collects on it in a thin film rather than bunching into drops (the opposite of a wettable surface is called hydrophobic, the classic example being a well-waxed car). 2. The other way for an aerosol to act as a CCN is for it to be soluble and large enough. Though there is still a size restriction, it is much less stringent than in the previous case. Because there are many more small aerosols than larger ones, this is the most common way for cloud droplets to form. Aerosols are present throughout the atmosphere and affect Earth’s climate directly through backscattering of sunlight and indirectly by altering cloud properties [4]. A ternary nucleating agent such as ammonia has been proposed to enhance the nucleation process by stabilizing early cluster formation [14]. Another possibility is that ions, produced mainly by galactic cosmic rays, can play an important role to give out the observed nucleation rates [13]. In this paper the role of ions in aerosol nucleation is reviewed. Two areas: Theory and Experimental studies are described in separate sections. In theory section, the various theories are mentioned to understand the nucleation. Experimental studies covers all measurements performed in the atmosphere from studies of the general behaviour of ions to particle nucleation observations where the role of ions is considered. This section also describes laboratory measurements from nucleation events to investigations of single reactions. Finally the state of the field is summarized. THEORITICAL APPROACHES A competition between the growth and evaporation of molecular clusters is called as Nucleation. For a stable cluster to be formed an initial energy barrier must be overcome – this barrier is due to the surface tension of the cluster. The height of this barrier is determined by the temperature and concentration of the nucleating species. There are several good introductions to nucleation theory as mentioned by Curtius [2]. This section deals with how the addition of an electrical charge alters the nucleation process. Thermodynamic theory The classical approach to bi- molecular homogeneous nucleation uses thermodynamics for the nucleation rate J is given as J = J0 exp (-à ¢Ã‹â€ Ã¢â‚¬  G*/kT) (1) where the pre exponential factor J0 = (2 ÏÆ' /Ï€ m)1/2 Ï 2v /Ï l depends upon the kinetics of the system and à ¢Ã‹â€ Ã¢â‚¬  G* is the free energy of formation of the critical cluster (the required cluster size to overcome the energy barrier), k is the Boltzmann’s constant, T the temperature, Ï v is the density of the supersaturated vapour , m is the mass of monomer molecules, Ï l the bulk liquid density. Kinetic theory One of the first kinetic models was developed by Yu et al. [17] in order to simulate exhaust plumes from aeroplanes. Coagulation processes were so fast that the thermodynamic solution did not apply and the evolution of heat in the plumes resulted in very high ion concentrations. Coagulation, condensation and evaporation were treated, and neutral, positive, and negative clusters were examined from 0.56 nm up to 0.56 ÃŽ ¼m size with individual bins for the first five molecules and bin sizes increasing by 20% per bin. All the parameters used were calculated from theory. It was concluded by the theory that the effect of changing ion concentration is highest when the ion production and Fig. 1- Gibbs free Energy barrier (Curtius, [2]) the pre-existing aerosol surface are low to begin with and when condensable gas concentrations are high. EXPERIMENTAL STUDIES Ion nucleation A review of atmospheric ion formation and different mechanisms for nucleation via ions was given by Harrison [6]. Large positive cluster ions (mass 2500 amu) were detected in the upper troposphere for the first time in 2002 using a large ion mass spectrometer [3]. The most common ions measured were composed of water, acetone, and a proton. Two larger modes were also detected. The lesser of these could be explained by the uptake of sulphuric acid but there were insufficient amounts of condensable gases to explain the largest measured particles by any other means than attachment of small aerosols to the ion clusters. The required concentration of these aerosols was 2.5 * 104 cm-3 and their presence could not be explained by homogeneous nucleation, which strongly indicated that the ions participated in the formation of clusters. The particles formed during a nucleation event were overcharged with negative ions indicating the participation of negative ion chemistry in the nucleation process. However little change in the number of small cluster ions (stable ions with a diameter of (~1.5 nm) was observed during the events, contrary to what would be expected from ion-induced nucleation (INU). This was possibly due to mixing of air parcels or a decrease in the ion condensation sink to other particles previous to the events. An instrument to measure the charged fraction of particles in nucleation events has been developed by Laakso et al. [7]. Particles were passed through a charger that could be turned on and off, and the size distribution was then determined by a differential mobility particle size counter with a switchable polarity to measure either positive or negative ions. A charged fraction above the expected equilibrium was detected in many cases indicating a contribution from INU. Negative overcharging was more common than positive. In order to test the theories and understand what to look for in field studies it is necessary to do experiments under controlled conditions. There are three main approaches to experimental investigation of INU. One approach explains the ion nucleation. Second approach operates on a macroscopic level trying to determine the influence of ions on bulk nucleation. The second approach is to investigate the molecular reactions taking place in an attempt to understand each step in the mechanism of particle formation. Bulk nucleation The first of this kind of experiments are the ones conducted by Wilson [16] where an expansion chamber was exposed to various kinds of ionizing radiation, and an increase in density of the resulting fog was reported. With the advent of particle counters more detailed studies became possible, and the relation between generated particles and radiation doses of alpha rays, beta rays, and x-rays were reported [10]. The doses used were from 1 to 15 rads forming ion concentrations orders of magnitude above atmospheric levels, and using this span of doses the particle production rate was increased by more than a factor of 100. Molecular reaction By investigating directly the molecules involved in the nucleation process more information about details of the mechanism may be revealed. It was found that the mole fraction of sulphuric acid approached that of neutral clusters with increasing cluster size [15]. Small negative clusters had more sulphuric acid than neutrals and the small positive clusters had less. The clusters did not grow to the sizes expected from the rate of collision between clusters and sulphuric acid, meaning that detachment of sulphuric acid played an important role. It was also shown that growth was more effective for negative than for positive clusters. A later study using the same setup determined the hydration constants for the clusters and using the obtained data together with data from Froyd et al. [5], the authors simulated the obtained mass spectra. SUMMARY Evidence for the importance of ions in aerosol nucleation is accumulating. We have shown above experimental studies, as well as the theoretical formulations which indicate that INU is a real effect, even under atmospheric conditions. In some studies the effect of ions is seen directly [12]. Some of the studies presented here indicate that the contribution from INU is just a few percent, compared to other nucleation mechanisms [7]. On the other hand there are also studies which point to ions as being a dominant source of new particles [18]. Models also do not agree where in the atmosphere INU can take place [9].The main question being whether it can happen in the boundary layer or not, and more data is required to improve the theories. One major obstacle to overcome in order to quantify the effect of INU is to determine the exact mechanism. It is well established that sulphate species play an important role, however the participation of other compounds cannot be ruled out. However, more investigations under atmospheric conditions are required to confirm and quantify the effect at varying temperatures and pressures. To further elucidate the potential impact on cloud formation, growth from freshly nucleated particles to cloud droplets must be investigated. REFERENCES. [1] Bricard, J., F. Billard, G. Madelaine: Formation and evolution of nuclei of condensation that appear in air initially free of aerosols, J. Geophys. Res. 73(1968) 4487– 4496. [2] Curtius, J.: Nucleation of atmospheric aerosol particles, C. R Phys. 7(2006), 1027-1045. [3] Eichkorn, S., F. Arnold, R. Busen: Massive positive and negative ions in the exhaust of an aircraft jet engine at ground-level: mass distribution measurement and implications for aerosol formation, Atmos. Environ. 36 (2002), 1821–1825. [4] Forster, P., V. Ramaswamy, P. Artaxo: Changes in atmospheric constituents and in radiative forcing in climate change, Cambridge Univ. Press, 2007, 171–180. [5] Froyd, K. D. and E. R. Lovejoy: Experimental Thermodynamic of Cluster ions, J. Phys. Chem. A 107(2003 a), 9812–9824. [6] Harrison, R. G.: Cloud Formation and the possible significance of charge for atmospheric condensation and ice nuclei, Space Sci. Rev. 94 (2000), 381–396. [7] Laakso, L., A. Hirsikko, M. Kulmala: Detecting charging state of ultra-fine particles: instrumental development and ambient measurements, Atmos. Chem. Phys. 7(2007), 1333– 1345. [8] Lee, S.H., J. M. Reeves, J. C. Wilson: Particle formation by ion nucleation in the upper troposphere and lower stratosphere, Science 301 (2003), 1886–1889. [9] Lovejoy, E. R., J. Curtius, K. D. Froyd: Atmospheric ion induced nucleation of sulfuric acid and water, J. Geophys. Res. 109 D (2004), 8204–8214. [10] Megaw, W. J. and R. D. Wiffen: The generation of condensation nuclei by ionizing radiation, Pure Appl. Geophys. 50(1961), 118–128. [11] Raes, F., A. Janssens, R. Van Dingenen: The role of ion-induced aerosolformation in the lower atmosphere, J. Aerosol Sci. 17 (1986), 466–470. [12] Svensmark, H., J. Pedersen, M. B. Enghoff: Experimental evidence for the role of ion in particle nucleation under atmospheric conditions, Proc. Roy. Soc. A 463 (2007), 385–396. [13] Turco, R., P. Zhao, F. Yu: A new source of tropospheric aerosols: Ion-ion recombination, Geophys. Res. Lett. 25 (1998), 635– 638. [14] Weber, R. J., P. H. McMurry, L. Mauldin: A study of new particle formation and growth involving biogenic and trace gas species, J. Geophys. Res. 103(1998), 16385–16396. [15] Wilhelm, S. D. and F. Arnold: Ion-induced aerosol formation: new insights from laboratory measurements of mixed cluster ions, Atmos. Environ. 38(2004), 1734–1744 [16] Wilson, C. T. R.: The Effect of R ¨ontgen’s Rays on Cloudy Condensation, Proc. Roy. Soc. 59 (1895), 338–339. [17] Yu, F. and R. P. Turco: The formation of aerosols in stratospheric aircraft plumes: Numerical simulations and comparisons with observations, J. Geophys. Res. 103(2008), 25915– 25934. .

Why Band Directors Stick with it and Teach :: Band Directors Education Music Essays

Why Band Directors Stick with it and Teach It’s a question we all ask ourselves from time to time: "Why am I doing this? Is it really worth it?" For band directors, the question comes up a little more FREQUENTLY. The long rehearsals, hours of preparation and planning. Budget, buses and banged up tubas. Counseling and consoling. Lesson planning to tour planning." Why are you doing this?" Someone asked me once, "It’s only band". It’s only band? Studies show that those high school students least likely to be involved with drugs are band students. Six separate national independent studies showed students with four years of instrumental music scored 40-50% higher on their Math and English Sat scores that non –music students who had equal scores four years earlier. "Why" Music is the only subject that encompasses all seven learning intelligences. Music is one of only two subjects that "connects" the two independent sides of the brain –logical and creative. Similar studies showed that band students attend more regularly. They participate in their classrooms, look forward to and actually like school. They become more focused, more disciplined. An educated person is less likely to end up in jail, impaired by addictions, or homeless. Band teaches life skills. Where independent thinking is the model in most academic classrooms, teamwork is essential in band. Band students learn to work with and for each other. The three R’s in band include Respect, Responsibility, & Reliability. Our students learn to appreciate one another for their individual talents and their contributions to the organization as a whole. They learn positive social skills –the most important factor in our program –where we teach such qualities as confidence, pride, and self esteem; all values that will serve these young people well throughout the course of their life. Citizenship, team motivational skills/leadership skills, time management, organization skills, dependability, and honesty are instilled into band members. Band teaches students to face challenges and strive to reach higher and higher goals. Band is family. When your student walks onto campus, he or she is instantly adopted into the strongest society on campus. They will be spending their school days among the top achievers on campus, with fellow students who look out for one another and steer each other away from trouble instead of towards it. Teachers, staff, parents, and volunteers watch over all the kids as if they were their own.

Shakespeares Othello - The Character of Iago Essay -- Othello essays

The Character of Iago      Ã‚   In Othello, by William Shakespeare, one of the most intriguing characters is Iago. At first glance he seems to be pure evil, but I think his actions are much more complex. Through thought-out words and actions Iago is able to manipulate others to do things that benefit him and move him closer to his goals. This character is consumed with envy and deceit that leads to theft and killing. Iago is the main driving force in this play, pushing Othello and the other characters towards their tragic endings.    Iago is not your ordinary villain. He is smart and an expert judge of people's character and uses this to his advantage. For example, he knows Roderigo is in love with Desdemona and figures Roderigo would do anything to have her as his own. Iago states, "Thus do I ever make my fool my purse." By playing on his hopes Iago is able to swindle money and jewels from Roderigo, making a substantial profit and making him a pawn in his plan. Iago is also quick on his feet and able to improvise when the unexpected occurs.    Being of smart mind, Iago is quick to recognize the advantages of trust, thus using it as a tool in forwarding his goals. Throughout the play he is often referred to and known as "honest Iago." He even states, "I am an honest man..." Trust is a powerful emotion that can easily be abused. As seen with Othello who, "holds (him) well/The better shall (Iago's) purpose work on him." Iago's use of his trust is greatly abused and beneficial only to him. His "med'cine works! Thus credulous fools are caught..." Iago slowly poisons people's thoughts, implanting ideas in their heads without implication to himself. Iago, a masterful deceiver, says, "And what's he t... ...to be a person "of exceeding honesty, (who) knows all qualities, with learned spirit of human dealings." Iago does know all about human dealings, but he is far from honest. He uses the trust Othello puts into their friendship to turn him into a jealous man. Iago told Othello that his wife was cheating on him thus Othello thought he was killing for justice. He even said he "loved not wisely but too well." When the opportunity occurred Iago was lurking, waiting for the chance to take advantage of Othello. Iago succeeded in destroying all he sought out.    Works Cited and Consulted:    Bradley, A.C. Shakespearean Tragedy. New York: Penguin Books, 1991.    Shakespeare, William. "The Tragedy of Othello the Moor of Venice" The Norton Shakespeare. Ed. Stanley Wells & |Gary Taylor. New York/London, W.W. Norton Company,1997. 2100-2174