The effects of media on prosocial behaviour Essay Example for Free

The effects of media on prosocial behaviour Essay There has been substantial number of studies that has provided evidence for the potential value of the media for the development of prosocial behaviour. Prosocial behaviour can be defined as helping behaviour, altruism or generally any behaviour that is positive and calculated to promote the interests of society. Television programmes contain many examples of good behaviour acting kindly and with generosity. Studies demonstrate that children may imitate forms of prosocial behaviour such as altruism, positive interaction with others when exposed to models who display such behaviours. This is especially true when the model is rewarded for their behaviour. In Bryan and Bryans (1970) study, 6 to 9 year olds were shown a specially recorded filmof a character bowling and winning gift certificates. 3 conditions: 1. the character gave some of his certificates to charity 2. He kept them to himself 3. The charater also preached the emnrts of giving to charity. After watching the film, the children were put in a similar situation and wer observed to see if they too would give to charity. Results those who had seen character being generous were likely to display generosity whilst those who saw him being selfish were less generous. Interestingly, it was the actions of the character that were infuenital whilst his words made no difference. One positive effect of television might be that witnessing others behaving aggressively helps viewers to get their aggressive feelings out of their systems and hence be less likely to behave aggressively. This claims that television can act as a form of vicarious catharsis. Singer (1989) provided evidence that shows television is only carthartic for a particular personality type or those who score high on cognitive measures of fantasy, daydreaming and imagination. Greenfield (1984) has claimed that television literacy involves teaching childrem to be informed consumers of television. This includes distinguishing between social reality and the make-believe world of television, interpreting and assessing sex role and minority group stereotypes. Huesmann et al. (1983) allocated young children who were known to have a large amount of exposure to T. V to a control or experimental group. The experimental group received 3 training sessions designed to reduce the modelling of aggessive behaviour seen on t. v. They were taught that t. v does not portray the world as it realkly is, that camera techniqes and special effects give theb illusion that charaters are perofrming their highly aggressive and unrealistic feats, and that most peopel use other methods to solve the problems encountered by characters in t. v programmes. Results compared with the control group, the experimental group showed less overall aggressive behaviour and lowered identification wth televised charaters. These effects had persisted when the participants were followed up 2 years later. OConnor found that specially prepared t.v material can hel[ lonely, self-conscious children t make friends more readily. Children who have difficulty getting on with their peers can watch fictional scenarios in which they see how to mix with others in various social situations. Studies have shown that childrens willingness to help can be increased through viewing a televised example of a specific prosocial behaviour. Television productions such as Sesame Street are designed to enhance the social maturity and responsiblity of young viewers. Children who watch this are able tp identify and remember the cooperative and helping  behaviours are emphasised. They also showed increased abilities to learn from the exercises contained on the programme (e. g. counting, letter recognition) as well as being better prepared for school life (Lesser 1974). However this is not true for all children. Rockman (1980) found that when programmes have a character struggling with a particular problem (e. g bullying, divorce etc) but cannot make a decision, children are able to understand the content and can then generate prosocial rather than antisocial solutions to the problem faced in the plot. The more violence we are exposed to on t.  v, the more densitised we become and so we are less likely to engage in violent behaviour, watching violence on t. v makes me less tolerant to violence in society. Conclusion/evaluation Research focuses too much on the influences of television and are not focusing on the benefits of the newspaper, radio, etc. According to Gunter (1998), the ordinary broadcast material can enhance a wide range of helping behaviours. It is important that people should be able to see antisocial behaviour in the media so that they can distinguish between prosocial and antisocial behaviour.

Economic Development of India Essay Example for Free

Economic Development of India Essay The capital market is the market for securities, where Companies and governments can raise long-term funds. It is a market in which money is lent for periods longer than a year. A nations capital market includes such financial institutions as banks, insurance companies, and stock exchanges that channel long-term investment funds to commercial and industrial borrowers. Unlike the money market, on which lending is ordinarily short term, the capital market typically finances fixed investments like those in buildings and machinery. Nature and Constituents: The capital market consists of number of individuals and institutions (including the government) that canalize the supply and demand for longterm capital and claims on capital. The stock exchange, commercial banks, co-operative banks, saving banks, development banks, insurance companies, investment trust or companies, etc., are important constituents of the capital markets. The capital market, like the money market, has three important Components, namely the suppliers of loanable funds, the borrowers and the Intermediaries who deal with the leaders on the one hand and the Borrowers on the other. ï  ® The demand for capital comes mostly from agriculture, industry, trade The government. The predominant form of industrial organization developed Capital Market becomes a necessary infrastructure for fast industrialization,and hence its important for the economy because india is a land if agriculture where more than 70 % of population depends upon agriculture and as India is also an developing nation so,industrialization is must necessary In this topic we have discussed that the development of stock market must contributes to economic growth both directly and indirectly. Hence stock market plays an important role in the economy of a country. Following the direct channel, we show that market liquidity has a positive impact on growth and indirectly market size affects investments which must affect growth of the country. Security markets also play a crucial role in economic growth and financial stability. The primary purpose of security markets is to serve as a mechanism for the transformation of savings into financing for the real sector, and hence constituting an alternative to bank financing. Recent local and global studies show that there is a positive correlation between the developments of stock markets and economic growth. Stock markets must be very efficient in the allocation of capital to its highest-value users. These markets also help to increase savings and investment, which are essential for economic development. If an equity market is informationally inefficient then investors face difficulties in choosing the optimal investment, because information on corporate performance is slow. Role of Securities Markets in Economic Development The increasing stringency of terms on both domestic and international loans, the urgency of mobilizing domestic resources by means other than dent finance has been greatly identified. The alternative to debt finance, of course is equity market. Capital market refers to the market for long and medium term funds for the business enterprise. It can be divided into securities and non-securities market. Securities market in turn may be divided unto the markets for primary issues and markets for secondary trading of the issued securities. In the secondary market, the existing securities change from the investor to another. There is no additional flow of funds for investment purposes in a secondary market; it only provides liquidity and marketability to the existing securities. A secondary market is very essential for a new issue market to develop. The secondary market can play most crucial functions in the pace of economic development by the promotion of savings and investment and efficient allocation of finds among the users. The securities market offers both investors and issues a broad spectrum of investment alternatives, which can help increase the level of both savings and investment. An efficient capital market can play the crucial role in mobilizing domestic savings for the purpose of investment

ECG and Pulse Oximetry: History and Types

ECG and Pulse Oximetry: History and Types In this chapter, we will discuss the history of ECG and pulse oximetry, the timeline and variations through time of the concepts used. We all also discuss the types of pulse oximetry and the electronics used with their requirements. 1.1 History of ECG The history of ECG is very wide, dating back to the 1600 with William Gilbert (that introduced the electrica concept for objects holding static electricity) (1).The most important founders of the electrocardiogram concept were Emil Reymond and Willem Einthoven. In 1843, Emil Reymond was the founder of the electrocardiograph concept by using a galvanometer to state that muscular contraction has action potentials. He also identified the types of waves by using the P, Q, R, and S waves. His studies inspired many physicians to continue and develop his work further. The evolution of concepts continued until the discovery of P, Q, R, S and T waves by Willem Einthoven in 1895. Einthoven also invented a modified galvanometer and used in for electrocardiogram recording. As a reward for his work, he won a Noble price in 1924 for inventing the electrocardiograph (1). As stated before, the history of ECG is very wide, therefore we will limit the observation to the movement done between 1843 and 1942 as shown in the following table: Table 1: ECG Timeline Year Scientist Concept 1842 Carlo Matteucci heart beat is accompanied by electric current 1843 Emil Dubois-Reymond Muscular contraction is accompanied by action potential. Test carlos concept on animals successfully 1856 Koelliker , Muller Record of the action potential concept 1869 Alexander Muirhead Might have recorded a human electrocardiogram 1872 Gabriel Lippmann Capillary Electrometer invented 1876 Marey EJ Electrical activity of animal recorded by the electrometer 1878 John Sanderson , Frederick Page Electrical current of the heart is recorded Divide into two phases (later known as QRS and T) 1887 Augustus Waller First human electrocardiogram is published 1890 GJ Burch Arithmetic correction of the electrometer 1891 William Bayliss , Edward Starling Capillary electrometer improved Discovery of deflections (later known as P,QRS,T) and delay (later know as PR interval) 1893 Willem Einthoven The term electrocardiogram introduced 1895 Deflections P,Q,R,S and T distinguished 1897 Clement Ader Galvanometer invented( Amplification system for the lines of telegraph ) 1901 Willem Einthoven Galvanometer modified for ECG use 1902 ECG records using galvanometer published 1903 Commercial production of galvanometer discussed 1905 Telecardigram invented (transmission of ECG signal by telephone) 1906 Normal and abnormal ECG record published Introduction of the U wave 1908 Edward Schafer First purchase of Einthovens galvanometer 1910 Walter James, Horatio Williams Electrocardiography reviewed for the first time in America 1911 Thomas Lewis Publication of a book about heart beat mechanism 1912 Willem Einthoven Description of the Einthoven triangle (formed for the leads) 1920 Hubert Mann Derivation of mono-cardiogram (later known as vector-cardiogram) 1924 Willem Einthoven Nobel price won for the electrocardiograph invention 1928 Ernstine, Levine Introduction of vacuum-tubes for ECG amplification Frank Sanborn First portable ECG invented 1932 Charles Wolferth and Francis Wood Description of the chest leads use in the coronary occlusion 1938 American heart and cardiac British association Standard positions of chest leads defined and added (V1 to V6) 1942 Emanuel Goldberge Addition of aVR, aVL and AVF to previous model Final ECG model used today 1.2: History of pulse oximetry The revolutionary paper by Comroe and Botelho was the founder movement that stated the need for a better method for the detection of hypoxaemia later known as pulse oximetry. The paper clearly underlined the unreliability of the cyanosis method currently used for the detection of arterial hypoxaemia. This was done by showing that if the oxygen saturation is reduced to 75% the cyanosis could not be detected. Another paper written by Lundsgaard and Van Slyke enhanced the movement. The paper showed the factors that enhance the cyanosis such as 5mg reduced hemoglobin per 100 ml capillary blood. The paper also showed that the subject, environmental factors and the tester affects greatly the detection of cyanosis. As a result, many type of instrumentation were developed to detect the presence of hypoxaemia. However, these devices were inaccurate due to the inability to detect the difference between arterial oxygen saturation and the arterial venous and capillary blood. This separation rema ins a problem until the microprocessor era where the separation was finally realizable. Pulse oximetry started as a simple monitoring technique and evolved through 15 years to become mandatory with every anaesthetic. It has the ability to detect the difference between arterial blood and venous capillary blood due to the pulsatile characteristics of the arterial blood and the smooth flowing of the capillary blood. The pulse oximetry became mandatory in anaesthetic due to the many characteristic such as: having a safety monitor showing the amount of oxygenation in the patient and the circulation of the blood having an non-invasive nature having no morbidity low running cost low capital cost On the other hand, pulse oximetry has been imposed to some unjust criticism as in the case of any new technology. As a result, pulse oximetry has been accused of morbidity despite being a non-invasive technique; it has been accused of causing tissue damage to the tissues adjacent to the probe. As a result, the Medical Devices Agency in England issued a safety action bulletin that contained a historical background, mode of operation, calibration problems, the characteristics of clinical uses and the technique limitation. 1.2.1 Hewlett-Packard ear oximeter Johann Heinrich Lambert was the founder of the correlation that exists between the absorbant and the amount of light absorbed in 1760. His ideas were developed later on by August Beer in 1851. However, the first real adoption of pulse oximetry was the ear oximeter founded by Hewlett-Packard. The concept used in this oximeter is based on an incandescent source combined with narrowband interference filters to transmit eight different wavelengths. Fiberoptics are used to lead the transmitted light from pinna to the detector. The calculation of the arterial oxygen saturation is based on the eight wavelengths absorption. In order to approximate the arterial saturation .this calculation is based on an approximation of overall absorption. The ear is heated causing vasodilation and the capillary blow flow to increase. That phenomenon leads to the approximation of the arterial saturation. The main problem of the device was the constant need for calibration due to the large and hard to handle probe-head. However, this technique was the only technique that allows continuous measurement of oxygen saturation; therefore this technique was the founder of pulse oximetry 1.2.2 Prototype pulse oximeter The founder configuration of pulse oximeter or the prototype used a light source and two bundles of fibers. The light source is made of halogen incandescent lamp to transmit the broad band energy to a fingertip probe. This transmission was done using a glass fiber bundle. Another bundle of fibers were used to return the transmitted energy to the apparatus. This returning energy is divided into two paths at the apparatus: one passing through a 650nm centered filter interface having a narrow bandwidth, and the second path passing through an 805 nm centered filter centered, that point is isopiestic hemoglobin. Then, a semiconductor sensor is used to detect the appropriate energy at the wavelengths passed through each filter. Finally, an analogue calculation is used to find the appropriate value of the oxygen saturation. This is clearly shown in the figure bellow. This primary prototype had many disadvantages such as: Having a heavy probe Having an hard to manage Fiberoptics cable Having an inaccurate filters letting some undesired wavelengths to pass through the tissues of the fingers Having a biohazard on the finger, in some cases the finger could burn Not fully respecting the beer-Lambert law Insensitivity with low pulse pressure Having a tendency to change in the analogue electronics part 1.2.3 Traditional pulse oximeter The current pulse oximeter uses light emitting diodes with a semiconductor photo detector to generate two wavelengths of 660 nm and 940 nm. Therefore this design provides a small and efficient probe to be attached to the ear or the finger and a small cable to connect the probe and the main unit. However, the pulse oximeter used with a magnetic resonance scanner has a different design. The main unit contains all the electronic components and optical fibers are used to transmit the light energy to and from the patient 1.2.4 Complete history of pulse oximetry BeerLambert law in 1851 Discovery of oxygen carrier in blood as a form of pigment by Georg Gabriel Stokes in 1864 Purification of the pigment and naming it hemoglobin by Felix Hoppe in 1864 Detailed study of the reflection spectra of the hemoglobin and the finger by Karl von Veirordt in 1876 Detailed study of the absorption spectra by Carl Gustav Hufner in 188790 Measure of the oxygen saturation in fish using spectroscopy by August Krough and I Leicht in 1919 Study of the light transmitted throughout human tissues using quantitative spectrophotometry by Ludwig Nicolai in 1931 Measurement of the oxygen saturation of blood through laboratory tubes Kurt Kramer in 1934 Measurement of the spectrum of concentrated hemolysed and non-hemolysed blood by David Drabkin and James Harold Austin in 1935 Continuous monitoring of oxygenation is achieved by passing red and infrared light throughout the finger web by JR Squires in 1940. This was done by creating bloodless area of calibration by compression of tissues Revolutionary change in the concept of oximeter leading to the development of the Millikan oximeter by Glen Alan Millikan in 1940-42 Creation of Woods ear oximeter by Earl Wood in 194850 Ability to differentiate between hemoglobin, carboxyhemoglobin and methemoglobin by the creation of CO-oximeter in 1960 Creation of the ear oximeter having eight wavelengths by Robert Shaw in 1964 Marketing of the newly created ear oximeter by Hewlett-Packard in 1970 Separation of the arteries absorption from the tissues absorption using the pulsatile nature of the absorption signal by Takuo Aoyagi in 1971 Development of prototype pulse oximeter containing luminous light source , filters and analogue electronics by Aoyagi in 1974 Commercialization of the pulse oximeter in 1975 Chapter II: Pulse Oximetry Characteristics The pulse oximeter separates the variation of oxygenation absorbance of the human boundary. The pulse oximeter uses the reflection from the skin and tissues or the transmission through the human boundary to perform spectrophotometry. The most common used technique is the transmission technique, but the reflection technique is also used in intrapartum monitoring. 2.1 Transmission pulse oximetry The human parts that must be chosen as extremity are the earlobe, toe, noise or typically the finger. The chosen part should have a short optical path length to have a translucent nature at the wavelengths used. The wavelengths used should have the range of 600 nm to 1300 nm and in the same range of the absorption spectrum due to the fact that each spices of hemoglobin have a unique absorption as shown in the figure bellow. As a result from the formulas we can show that the minimum number of used wavelengths should be greater or equal to the number of unknowns. As a result the commonly used pulse oximetry uses two wavelengths for the two unknowns oxygenated hemoglobin and deoxygenated hemoglobin. In addition, the wavelengths used must be monochromatic and have a low cost. In the design, a sensitive detector must be used to prevent high levels energy that causes tissue damage from passing through. Thus, there is a need to separate the saturation value for arterial hemoglobin. In order to separate the saturation, computing power is used for arterial hemoglobin saturation extraction. In addition to that, spectrophotometry requires the use of a laser due to the requirement of a single wavelength/color source as energy source. Therefore two lasers are used each having a different wavelength in order to transmit the energy to the patient boundary using optical fibers. Due to the presence of the laser, the pulse oximetry will have a high cost, a fragile nature and requires safety implications. However, the fiber optic cables were rejected in the later designs after the discovery of the possibility of the use of LED as an energy source. As a result, the overheating of the tissues problem was removed and the narrowband filters were removed from the design thus reducing the cost and fragility of the design. In addition, the number of photodector was reduced to a single device due to the possibility of switching the LEDs on and off quickly. 2.2 LEDs Energy sources used in pulse oximetry are monochromatic ideally with the option of using the expensive semiconductor lasers. Early pulse oximeter used similar wavelengths of 660 nm for red light and 940 nm for near infrared. Therefore, LEDs of 660nm and 940 nm were used in these designs. However, modern devices used additional wavelengths. Doped Material Wavelength Light Ga.28In.72As.6P.4 1250 nm Infrared Ga 1100 nm GaAsSi 940 nm GaAs 900 nm GaAIAs 880 nm GaAIAs 810 nm Near Infrared GaP:ZnO GaAs.6P.4 780 to 622 nm Red GaAs.35P.65 622 to 597 nm Orange GaAs.14P.86 597 to 577 nm Yellow GaP:N 755 to 492 nm Green GaAs-phosphor (ZnS, SiC) 492 to 455 nm Blue GaN 455 to 390 nm Violet GaN GaS2 455 to 350 nm Ultraviolet Standard pulse oximetry have the isobestic point (805 nm) at which there are two wavelength concentrated at each side. As stated earlier, two wavelengths of 940 nm (infrared) and 660nm. The absorption spectra are flat at 940nm allowing the calibration to be immune to the variations in the peak wavelength. In addition to that, the difference between the absorption of reduced hemoglobin and the absorption of oxygenated hemoglobin at 660nm is large ,causing a flat curve and allowing the detection of changes in absorption caused by small changes in oxygen saturation . 2.3 Probe The probe of a pulse oximeter consists of light emitting diodes as energy source having a perpendicular output through the extremity towards a semiconductor photo-detector. The mechanical design prevent mispositioning that cause errors in calibration 2.3.1 Differential Amplifiers in the probe Nowadays differential amplifier techniques are being used in the plethysmograph signal to enhance the common mode electrical and magnetic noise reduction. The amplification is done between the conductor signal and the current pathway. This amplification is performed to prevent the electromagnetic interference (EMI) from affecting the probe or the lead. Due to the fact that, a small voltage signal cause the voltage generated by the EMI to be greater than the signal itself. Two identical conductors from the detector to an amplifier are feed through the differential amplifier. The resulting output will be the absolute value of the signal from conductor 1 minus the signal from conductor 2. The advantage of using such a differential amplifier is that the induced voltage from the EMI will be two identical signals that will cancel each others. The energy output of the photo detector must be immune to the variation in the fingers thickness, leading to a variable energy output from the LEDs. This criterion requires detectable and unsaturated energy levels that reach the semiconductor. In the other hand, the current passing through the LED must be varied to allow the variation in the intensity of the output over several orders of magnitude. This variation is necessary to prevent high level of energy from passing through the tissues, causing heat damage. 2.3.2 LED in the probe LED used in pulse oximetry have a bandwidth between 10 and 50 nm and a 15 nm centre wavelengths variation. On the other hand, variations in the driving current cause errors at the red LED but doesnt have any effect on the near infrared LED. These facts are related to the absorption spectra; it is flat near infrared region and steep in near the red region as shown in figure 3. This will lead to an increasing inaccuracy in pulse oximeter as the oxygen saturation decreases. This problem can be solved by two different ways: 1. Selection of LED having an acceptable range of errors in the center wavelengths. 2. Measurement and calibration of center wavelengths into actual wavelength The calibration is usually performed by the use of a fixed resistor attached to the connector of the probe lead. This resistor will automatically set the probes wavelength to the one of the red LED. 2.4 Photo-detector In pulse oximetry, a single photo-detector made of silicon photodiode is positioned perpendicularly to the LED in order to detect the energy from both LEDs. Due to the fact that semiconductors are sensitive to external energy and light, general semiconductors have their size increased. However, Semiconductor photo-detectors having their sensitivity varying with wavelength, take advantage of the limited photosensitivity to limits the choice of device and the scope of wavelengths. The silicon photodiode is characterized by the direct correlation between the output and the incident light and its wide dynamic range. On the other hand, phototransistors have more electrical noise, but more sensitivity than photodiodes. The electrically screened flexible cable carries the LEDs power and the small signal from the photo-detector. The cables also have the function of temperature detection of the probe and the skin using conductors. Finally, in order to be immune to the mechanical artifacts caused by movement, the cable must be flexible and light. 2.5 Electronics 2.5.1 Electronics circuitry Pulse oximetry makes use of different electronics circuitry for different purposes: Amplifies the signal coming from the photo detector Separates the plethysmograph signals into red signals and infrared signals. Switching and controlling the current of the LED. Setting the gain of the signals to be equivalent to the other signal Divide the signal into arterial signal and other signals Convert the infrared signals and the red signals into digital signals using AD conversion. Computation of the ratio red to infrared. Eliminates artifacts Compute the value of oxygen saturation Display of the computed values Managing the alarms settings The absorption of energy from the LED to the photo-detector creates the signal in the red and the infrared channels. This absorption is the assembly of different absorptions from various sources such as arterial blood and its pulsation, venous blood and tissues. The initial amplification stage is implemented by analog electronics, whereas calculation of spo2 stage is implemented with a microprocessor, the photo-detector signal is treated by electronics or microprocessors. The output signal from the analog part is processed by an ADC to be suitable for the digital part or the microprocessor. 2.5.2 Amplification stage The amplification is processed in different stages: The low amplitude photo-detector signal is amplified. The LEDs are energized in an alternating sequence with a short delay in between to allow the measurement of external light. The amplified signal is decomposed into three signals: red, infrared, and dark signal. The electronic filters remove the 1 KHz high-frequency switching, making the signal continuous and having different wavelength. The dark signal is subtracted from the DC levels to prevent problems from the energy source. The DC components of the infrared signal is equalized to the DC components of the red signal by changing the amplitude of a photo-plethysmograph signal . The red to infrared ratio is calculated from the amplitudes of the AC components. 2.5.3 Conventional Spo2 calculation methods Earlier pulse oximetry used one of two methods to calculate the spo2 values. The first method is solving simultaneous BeerLambert law equations. However, this method have many limitations such as one unknown, absence of scattering and turbidity, and the need for the path length to be constant. Due to the many limitations, this method is considered inaccurate and therefore rejected. The second and common method uses the red to infrared ration with a look up table to find the spo2 values. The thickness and size of the finger varies from one person to another, thus the optical density will also vary from one patient to another. However, the saturation of the semiconductor does not depend on the characteristics of the patient but only on the intensity of light. In order to have the same saturation, the same amount of light is applied to the patient regardless of the size and age. This can cause serious heat damage for children. The prevention of this problem is another microprocessors role. The microprocessor implements a correction factor that controls the LED current and synchronizes the LEDs intensities. The resulting current should be the minimum amount of light energy allowing the calculation of pulse oximetry while not damaging the tissue 2.6 Elimination of artifacts The intact calculated saturation values include the real values with some invalid values created by artifacts. Therefore, statistical averaging methods are used in order to remove these artifacts 2.6.1 Mechanical movement artifacts The mechanical movement artifacts are processed with the Nellcor algorithm. The Nellcor algorithm consists of the following steps: Divide the output signal from the differential amplification stage into pulses. Check the pulses for motion artifacts If the pulses do not contain motion artifacts, compare the identified pulse to the normal pulse. If the pulse contains motion artifacts, higher standards for the quality of the light motion signal are applied. The resulting pulse should be compared to the normal pulse If the pulse is not identical to the normal pulse, that pulse is rejected If the pulse is identical to the normal pulse, check if characteristics of the indentified pulse are physiologically possible If the characteristics of the identified pulse are not physiologically possible , that pulse is rejected If the characteristics of the identified pulse are physiologically possible, the pulse is compared to the average of the preceding pulses If the pulse is not equal to the average of the preceding pulses, that pulse is rejected If the pulse is equal to the average of the preceding pulses, the pulse is divided at dicrotic notch . Then the whole pulse or the main component is selected for the calculation. Then, a filter based on confidence assessment is implemented Finally, the SpO2 value is calculated

Aristotles View of Slavery Essay -- Slave Slavery Aristotle Paper Ess

Born in the year of 384 B.C. Aristotle was seen as conventional for his time, for he regarded slavery as a natural course of nature and believed that certain people were born to be slaves due to the fact that their soul lacked the rational part that should rule in a human being; However in certain circumstances it is evident that Aristotle did not believe that all men who were slaves were meant to be slaves. In his book Politics, Aristotle begins with the Theory of The Household, and it is here that the majority of his views upon slavery are found. With the beginning of Chapter IV, Aristotle's idea of slavery is clearly defined. "The instruments of the household form its stock of property : they are animate and inanimate : the slave is an animate instrument, intended (like all the instruments of the household) for action, and not for productions." This distinction between action and production, is based upon the understanding that 'production' is a course in which a result is desired beyond the immediate act of doing. Where as, the simple act of completing a task is identified as 'action'. Aristotle, who believed that life was action and not production theorized that slaves were instruments of life and were therefore needed to form a complete household. In fact Aristotle went as far as to say that a slave was comparable to a tame animal, with their only divergence in the fact that a slave could apprehend reason. For he concluded that a slave and animals only use was to supply their owners with bodily help. At the end of the Theories of the Household, Aristotle explains how slaves are different from andy other types of people, in the sence that they are the only class who are born into their occupation and become property of their masters. In examining this relationship we find that he thought that while masters were the masters of the slaves, they still held a life other than that of being master; However, Aristotle believed that not only was the slave a slave to his master, but the slave had no other life or purpose than belonging. From this consideration we begin to understand Aristotle's views on the relationship between Master and Slave. At the beginning of Chapter V of the Theory of the Household, the distinct role of master and slave is defined. There is a principle of rule and subordin- ... ... Aristotle we find that he was a man of great curiosity, wisdom and ideas. Although his views on slavery seemed to hold true to the times, he had many variations on the conservative norms and beliefs. He had believed that slavery was a just system where both master and slave were beneficial from this relationship. And with this he thought that by nature, certain people were born to be slaves, yet with these beliefs we find many exceptions, where Aristotle allocates areas to describe those who by chance became slaves but in his opinion were born to be free. And in such incidence where men born free were not fit to be masters Aristotle explained how it would be easier for the master to obtain a steward who was more adept at giving instructions to run the household and leave the master of the house to more prudent issues. We can only guess as to what made Aristotle believe that by the human soul one could delineate whether or not a man was meant to be a slave or a freeman. And with his arguments we find that it was just as difficult for him to make that distinction as well. "Though it is not as easy to see the beauty of the soul as it is to see that of the body."

The Voyage to the New World :: History

The Voyage to the New World First of all, King Ferdinand of Aragon and Queen Isabella of Castille got married in 1464. The main reason that they got married was to unite their kingdoms into Spain. The king and queen were Roman Catholic, so they gave power to certain people to convert non-Catholics to Catholicism. In 1482, the Roman Catholic monarchs renew the reconquista, the military crusade ordered to conquer the remaining Muslim state in Iberia, Granada. In 1492, the Roman Catholic monarchs ordered all non-converted Jews expelled from Spain. In April, 1492, Spain received reports that the Portuguese succeeded in reaching the Indian Ocean, therefore Spanish monarchs authorized Christopher Columbus to sail to Asia and establish trade and start to convert natives to Christianity. The reasons that the monarchs let Columbus sail were mainly to search for spices and profits, spread Christianity, and to use some of their new technology like the caravel. Columbus would receive one-tenth of all the profits, and governance of the new lands would be shared by the monarchs and by Columbus. There were mainly three different types of natives who lived in the Caribbean. There were the Ciboneys (in Cuba), Caribs (in the lesser Antilles), and Taino-Arawaks (in the Bahamas, Cuba, Jamaica, Hispanola, and Puerto Rico). The population of the Caribbean Islands was probably not too much more than 1,500,000 of which about 1,000,000 lived mainly in Hispanola. Hispanola was the center of Taino culture. Between 1509 and 1520, the demand for native labor increased and the native population steeply decreased. Here is a table of how rapidly the population of the Tainos decreased: 1492- 1,000,000 (about) 1514- 28,000 1508- 92,000 1518- 16,000 1509- 62,000 1540- 250 1510- 66,000 1570- 125 1512- 27,000 By the 1540’s the native population of the Tainos did not even exceed 1,000. In October 1492, Columbus’s ships were bound for Japan, China, and the Indies, but they arrived in the Bahamas. In May 1493, Columbus departed for his second voyage. The new goals were to settle the land, cultivate the land, assert royal authority over the whole area, convert the natives to Christianity, and mainly to search for gold and send it back to Spain. There were 17 ships, and about 1500 men on this voyage. Between 1494 and 1495, Columbus implemented a series of regulations to control the natives and to gain lots of wealth. Each adult must have delivered a certain amount of gold every three months, or else they would be punished by the Spaniards.

So long a letter :: essays research papers

Daniel Overmyer’s, Religions of China, discusses the historical developments of the different religions of China. It also addresses the impact religion has on the daily life of the Chinese in the past and present. Overmyer introduces the Chinese living system with his knowledge of Feng-shui, and how everything is connected by shared rhythms. â€Å"These rhythms are discussed as the cold, dark forces of yin and the hot, bright forces of yang; together with the five powers of metal, plant, life, water, fire and earth; these forces are modes of qi, â€Å"vital substance†. Their interaction produces all things† (12). The author does an excellent job in his approach to teaching Chinese religions and culture. He explains its concept and upbringings then tries to relate them to the reader’s daily life. This book serves as an introduction to Chinese History, in terms of religions and practices, which paved the way for China today. In order to help introduce the major cultural and religious features of the book, the author places a chronological list of events in the beginning of the text; from the Prehistoric time (6000 B.C.) to the Peoples Republic of China (1949-present). Its geographical limits are all of China, which extends from the Pacific Ocean to India to Afghanistan, and from Burma in the south to Siberia in the north. Overmyer gives a brief historical view of the country’s’ political and social climb, one example was with the decline of the Hans dynasty to the uprising of the Yellow Turbans then to Way of the Celestial Masters. â€Å"These two popular movements were also forerunners of Daoism, which became the most important religious tradition founded in China† (37). The presentation of the text is thematic and it provides the reader with a step by step analysis to religions and practices. The author presents the concept in a very organized fashion. The first chapter introduces the beliefs and values of China’s living system, with the concept of Feng-shui and qi. The next chapter gives a brief overview of the historical developments of the different religions; Daoism, Buddhism, Confucianism, Popular Religion, and Foreign Religion. The proceeding chapters include the traditions and practices in their religious life and also the community’s intervention with the spiritual life; i.e. The Spring Festival, Exorcism and the Buddhist Enlightenment. The last chapter, Chinese Religions Today, emphasizes on present day religion in Taiwan and China mainland. Overmyer is very knowledgeable in the subject matter, he was taught by his mother during his first 5 years living in China.

A rhetorical analysis of against school by John Taylor Gatto Essay

Attempting to persuade his audience reading from this Article,John Taylor Gatto’s displays his points of view that he does not belive in our school system. He believes that the staying in the American schooling system for so long has supplied him with every reason to refer to it as a childish program. According to him, people may see the key problem of schooling as boredom. To clarify his point, Gatto asserts having education is not equal to taking schooling which is instead considered as â€Å"a daily routine in a factory of childishness in order to make sure children do not really grow up.† Gatto supports his views by enumerating a significant number of successful Americans who did not go through the schooling system but turned out to be productive, such as Abraham Lincoln. In this short story, â€Å"Against School†, Gatto tells his experiences with students that complained they were bored in school. Gatto said these students were not interested in what was bei ng taught because they often said the work was stupid and that they already knew it. According to Gatto, these students were interested only in grades rather than learning the subject. In â€Å"Against school† Gatto begins his article discussing his thoughts on whether the term â€Å"boredom† could be used to define the experience of a student. He explains that every time he used to ask students in class why they were bored in school, the students felt that their teachers â€Å"did not seem to know much about their subject and clearly weren’t interested in learning more† (Gatto 300). With teachers being bored as well and blaming their students he brings up the question of who really is to blame. Gatto feels a change of not to provide the student with â€Å"schooling’ but with an education can be done by simply being more involved with the student. He believes that by introducing students to â€Å"competent† adults or in other words teachers who know their subjects the students will gain inspiration and interest. He then goes on to ask if schooling is even necessary, questioning if the 12 years of mandatory schooling are beneficial or not. Gatto proceeds to talk about the origins of our educational system and what he knows is the real purpose of our educational system based on the evidence he presents. He explains that the United States educational system comes from a military state named Prussia. An â€Å"educational system deliberately designed to produce mediocre intellects; to hamstring the inner life, to deny students appropriate leader skills. (Gatto 303). Claiming that we are bred to never grow up and remain children,  in his last paragraph he states one last time his thoughts on the purpose of mandatory education â€Å"Mandatory education serves students only incidentally; its real purpose is to turn them into servants† (Gatto 307). Gatto states that in this country people sees â€Å"success† as synonymous with â€Å"schooling†. He articulates that important people like George Washington, and Abraham Lincoln never went through the twelve-year schooling system we have now and they still succeeded. Gatto said that according to our cultural traditions schools were made to make good people, good citizens, and each person their personal best. Since his goal was to persuade his audience in this article I would consider the writing primarily appealing to logos and ethos with pathos used throughout the article. On page 300 his first sentence â€Å"I taught for thirty years in some of the worst schools in Manhattan, and in some of the best, and during that time I became an expert in boredom† is used to show the reader that he is an experienced veteran of our educational system. He places this at the very start of the article to try and gain immediate credibility so that he may potentially obtain the trust of the audience. This is all done to display his social standing which makes it ethos. On that same page he brings up the question â€Å"Who is to blame?† and he includes the reasoning for both the student’s and the teacher’s points of view on who they feel is accountable for school boredom. â€Å"They said teacher’s didn’t seem to know much about their subjects and clearly weren’t interested in learning more† claims Gatto his student’s would say to him, and when asking the teacher’s they stated â€Å"Who wouldn’t get bored teaching students who are rude and interested only in grades†. He places their opinions first to set himself up for introducing his own point of view in the following paragraph on page 301, â€Å"We all are. My grandfather taught me that† and goes on to say that it’s your own responsibility to entertain yourself and the teachers job is to provide you with an education. Because of the placement in points of view the reader is first brought to choose between teacher and student and who is really at fault but is then introduced to Gatto’s point of view where he blames both the teachers and students. This tactic was used because by stating his opinion after that of the students and the teachers his audience may perceive him to have the more balanced or in other words, most informed  point of view between the three. By him saying that the students are saying one thing and that the teachers are saying another and then saying what he thinks and why they are wrong he is appealing to a logos way of persuading his audience. When explaining his grandfather’s lesson the word â€Å"childish† is used to describe those who don’t agree with what his grandfather is preaching, â€Å"the obligation to amuse and instruct myself was entirely my own, and people who didn’t know that were childish people, to be avoided if possible† (Gatto 301). This choice of wording also appeals to logos because by saying that the people who â€Å"didn’t know that† or in other words weren’t aware of the belief that it is your own job to entertain yourself, a re â€Å"childish† he does this so that he can try and persuade the reader by explaining to them that because the students or teachers aren’t mature enough to already know that it is up to them to stay entertained, and they expect someone to entertain them they are still childish people. This also appeals to ethos because by saying something negative about the opposition specifically that they are childish the author can lead the readers to believe that he is the wiser or more mature one of the three viewpoints. When providing evidence to support his claims Gatto once again appeals to his audience through ethos by stating the person he is quoting and some background on said person before writing about what it is they actually said that relates to the article. By adding positive words or background information about the author he attempts to gain credibility for his evidence by letting the audience know that the information is coming from someone who knows what they are talking about and he does it various times throughout the essay for example on page 302, â€Å"we have for example the great H.L. Mencken, who wrote in the American mercury† Notice the usage of the word great, and how the context its being used in could lead the reader to be more fond of the evi dence. A more obvious use of this tactic can be found on page 303 where he says â€Å"It was from James Bryant Conant-president of Harvard for twenty years, WWI poison gas specialist, WWII executive on the atomic-bomb project, high commissioner†¦and truly one of the most influential figures of the 20th century† He probably could’ve just said one or two things but he throws a whole list at the readers so they could potentially feel this is accurate information from someone with high standing. Instead of just throwing his evidence and support out there Gatto attempts to set  them up again to seem more credible because of his certain choice of wording and how he places it in his writing. He decides to end his article by trying to persuade the audience through the use of emotional appeal, or pathos. After urging the audience to â€Å"wake up† and see the points he is trying to make he decides to use the line â€Å"there’s no telling what your own kids could do† he says this to hook any leftover skeptics by bringing up the point that maybe it won’t help them but instead their children. This is effective because the reader may have a different point of view on this whole article when thinking about how it relates to their loved ones, their children. When asked if I agree with Gatto and his views I would say that I partially agree with him. I do agree when he says that modern day education is boring because of both the teachers and students, it really is up to both sides to find a way to entertain each other to get the most amount of work done and find inspiration in what they are doing. When saying that â€Å"Mandatory education serves children only incidentally; its real purpose is to turn them into servants (Gatto 307) I also agree with him. The idea that you should be forced to go and do something you don’t always want to for the sake of â€Å"learning† when you don’t really care about the topic to begin with has always been something I’ve questioned. Sure you can get the work done but if you don’t care it won’t stick so what’s the point? It really does seem to me that schools are used for income, to keep the population busy and to keep us out of â€Å"trouble†. Education system teaches us to appease, its gets us tired and it makes many of us lose hope in what we want to do. I don’t agree with him however when he talks about how school keeps us from growing up. We still get older and mature and many people actually find what they feel is their calling through our educational system so that can’t be the case, I don’t think it keeps us from ever being useful. I think we are already useful; we are just too caught up in school and all the work there to go out and do things. Throughout his article Gatto does a great job as far as being persuasive with his audience through the use of ethos logos and pathos. With Harper’s magazine being released and purchased by people who are interested in controversial views like this, Gatto gives the readers what they paid for by  effectively questioning our educational system and making his point that education is turning our society into slaves or as he likes to put it â€Å"servants† (Gatto 307). What I do feel he lacks on though is providing more views of the opposition, on page 302 he writes about all the people who didn’t go to school and are successful in the world, but he fails to mention anyone who has gone to school and has ended up just as successful as those people. I find it hard to believe that out of anyone going to school in the United States since 1915, not one person has been successful because of it. Though he is persuasive and successful in putting out his points of view this aspect of his article is very unbalanced. Ultimately, the article does get the job done and does a good job informing the readers of his views on our educational system and why he is against school. Starting off his writing by stating â€Å"I taught for thirty years in some of the worst schools in Manhattan, and in some of the best, and during that time I became an expert in boredom† (Gatto 300) proves to be effective because logically it makes sense that he learns about boredom after thirty years, and being a teacher for thirty years gives him credibility in the topic at hand. Gatto argues that schools are cell-block style, forced confinement of both students and teachers (Par. 4). According to Gatto, James Conant changed the style of standardized testing, nor the gargantuan high school that warehouse 2,000 to 4,000 students at a time (Par. 12). Gatto states the best one to become your full potential is to manage yourself (Par. 27).