The Function of Working Colour Space in Colour Management Essay

The Function of Working Colour Space in Colour Management - Essay Example Management is defined as the control of a subject. Colour management can similarly be defined as the control of colour in an art. Different devices used in visual arts such as cameras and printers â€Å"responds to or produces colour differently† (Koren, 2004, p. 1). The capacity to predict the desired colour or capacity to use digital features of the equipment to obtain the desired colour is therefore important in productions. An artist must, therefore, be able to control available colours in order to â€Å"improve colour match† and to â€Å"reproduce colours as precisely as possible†, an initiative that forms the basis of colour management (Koren, 2004, p. 1). A colour space is a set of colours in a colour model. It consists of a wide range of colours for selection. This allows an artist to navigate through colours in an attempt to find a suitable match. The concept of colour space, through an application of colour profiles also allows artists to refine their colour matches through processes such as rendering intents. Application of concepts such as â€Å"perceptual, saturation, relative colorimetric, and absolute colorimetric† allows for mapping of colours within a colour space and hence facilitates perfect matches in productions. The colour space is, therefore, an instrumental concept in visual production (Anderson and Krogh, 2012, p. 1). The working colour space is, therefore, an important tool in visual arts as it forms a basis for selection of matches for quality output. It, therefore, forms an elementary ground for colour management.

Lies My Teacher Told Me Essay Example for Free

Lies My Teacher Told Me Essay My teacher Told Me is a book that should be read by everyone at some point in their lives. According to James W. Loewen, students hate history classes and when they have to take history, the students think its boring. They repress everythingthey were taught. James W. Loewen spent a lot of time studying 12 history textbooks; he observed high school history classes and interveiwed high school history teachers. Ths is how he knows that the textbook leave out conflict or real suspense (pg 13). In his book he tells us what the textbooks lleft out or distorted about events that took place in history. He asks the question Why are history textbooks so bad? (pg14). Nationaism is one reason; they want us to be proud of America and proud to be an American. The textbooks do not include controversy; if they did then students may think the subject was interesting. Students are not taght the details of our heros unacceptabele side. Our history textbooks do not teach us about that Helen Keller was a radical socialist and admired the communist party in Tussia. How did she come to be so radical? Our students are taught that Helen Keller was deaf and bling, that is all most people remember her for. She came rrom an affluent family and she was shocked to find out how really poor pwople lived, how they had poor health care, miserable livinge conditions, poor nutrition and that people worked in sweatshops. She fought for the righs of women to vote. We are taught that Woodrow Wilson was a great statesman. After he led America into World War I he led the struggle to esablish the League of Nations. Loewen states that we were never tayght that Wilson was a leader of segregation in the federal government. He led some outrageois militant interventions in foreign countries: the consequences of those are still causing gavoc today. He sent money to the white side of the Russian Civil War and authorized a naval blockade of the Soviet Union. He sent forces to help overthrow the Russian Revolution. That caused aggression that motivated Russia in the Cold War. Wilson was openly hostile to black people. He barred blacks from any federal hobs. When he ran for office he prmised he would press for civel righes, when he got into office he did not do that. Christopher Columbus is portrayed as Americas first hero. today Christopher Columbus is one of two people to have their name marked on a national holiday. If we knew the true facts of Christopher Columbus would we be less likely to celebrate and honor him on that day? Christopher Columbus was ooking for a new route to the east to get spices because the Turks closed the land route. After two months at sea he landed in the West Indies. He found a new contient, so we were taught. For centuries fishermen and seamen had known the earth was roung. The Turks made money from the land routes being open so they had not reason to close the land routes. Europeans had been fishing off of Newfoundland in 1480s. For thousand of years the Irish an dPhoenicians had visited Canada and New England, Columbus purpose fro the beginning was not exploration or trade, but conquest and exploitation. the fact that sailors carried small pox, bubonic plague adn influenza killed a very large percentage of the natives everywhere they went. Taking of land , wealth and labor from the natives which caused their near extermination and the transatlanti slave trade which created racial underclass were introduces by Columbus that revolutionized race relations and transformed the modern world. When Christopher Columbus could not find gold to take, he took slaves and shipped them to Europe. He mistreatedthe natives he came upon, taking their land and raping their women. The truth about the Thanksging tradition is that George Washington set aside days for national thanksgiving. During the civil war the union needed all the patriotism it coud come up with, Abraham Lincoln proclaimed thanksgiving a notional hiliday. The pilgrims had nothing to do with it. No one used the term pilgrims until the 1870s the term, Pilgrims did not get introduces in the tradion until the 1890s. The Pilgrims did show courage in making the trip and they suffered from diseases such as scurvy and pneumonia and half of them died. When the Pilgrims landed, they fornd land already cleared; they found corn, squash and beans. they had the place to themselves and helped themselves to the crops. hey thought that God had brought the plague to the Indians so they could have their land. The pilgrims did not cause the plague but the British anFrench fishermen had brought it. Within three tears the plague killed between 90 and 96 percent of the natives of coastal New England. That left the land for the Pilgrims. Students, especially of the niddle class, know little about how the American class structure works and nothing about how it has changed over time. textbooks touch on the certain points of labor history but do not cover anything that has to do with social class. Four of the twil textboos Loewen reviewed, suppled fragmentary analyses of social stratification that were more in the colonial America. Teh textbooks takl about Social Mobility however ther s not anything said about the differences in social classes. Social class is an imprtant part of our society. It starts from conception. Affluent mothers are more likely to get prenatal care than a poor or working lass mother to be. Low income kids often times have negaive attitudes. To teach about social class in our history and in our present would invite students to let go and look past their own social class to be able to learn and grow beyond the begative thoughts that hold them i the same social class. Recent history is the history that has the most impact on our lives today. Loewen compares the War of 1812 and Vietnam War, which high school students know very little about. The war of 1812 killed 2,000 Americans an dlasted half as long as the Vietnam War. It lasted 10 years and 50,000 Americans died. textbooks give the two the same amount of space. teh textbooks do not show the degree of destruction done in Vietnam and to the Vietnamese population. the textbooks do not coner My Lai where American troops had personally raped, cut off ears, cut off heads, taped wires from portable telephones to human genitals and turned up the power, cut off limbs, blown up bodies, randomly shot at civilians, razed villages in reminiscent of Genghis Khan, shot cattle3 and dogs for fun, poisoned food stocks, and generslly ravaged the countryside of South Vietnam. as john Kerry tokd the Senate Foreign Relations committee in April of 1971. (pg 245) Most teachers do not want to cover the Vietnam War in detail, they are agraid it might give students the wrong impression of American institutions. Along with the Vietnam War not being covered in schools is the womenss movement. Techers are afraid of offending the parents of the students. Most yount addults that have had history classes in high school cannot say when the civil War was fought or who was in the Vietnam War. Our History in the textbooks is portrayed as dead facts about our history would be remembered by the students. History is taught in a positive way of the white mand, the students ofother bakgrounds and nationalities often get offended and resist learning American History. If the teachers strayed away from the traditional way history is taught and brought in other sources and addd emotion to it, it would be a more interesting subject to study. This book is intriguing and thought provoking. I had no idea that history was taught like this. I fully agree that history at the same time should focus on patriotism, it should also be taught with facts, true facts. Our hisory is our history, it is what it is and we connot change it. The only thing we can do now is change the way it is taught in the present and the future. If we teach the wrong doings of the past, we may not make the same mistakes again. Loewen, James W. Lies My Teacher Told Me

Growth Kinetics of Microorganisms in a Shake Flask

Growth Kinetics of Microorganisms in a Shake Flask Abstract This experiment is carried out to study the growth kinetics of microorganisms in shake flask. E.coli is grown in a LB broth medium and being fermented for 24 hours. Throughout the fermentation, the cell culture is taken out for every 3 hours and protein test, glucose test and cell dry weight are being performed. As for the optical density analysis, the absorbance reading from the spectrophotometer is taken while for the glucose test, the reading of glucose level is taken from the YSI 2700 Select Biochemical Analyzer or can also being performed by using DNS reagent and the absorbance value is taken. These absorbance values will then being compared with the standard curve to get the glucose concentration inside the shake flask at particular time. The cell dry weight, in the other hand, is taken after the mass concentration is being dried overnight in the oven. The weight of the viral which contains the biomass before and after the drying process is recorded to get the dry cell weight. For the optical density of the cell, the absorbance value showed an increment which indicating that the cell was growing and number of cell is increased in the shake flask. The glucose concentration, however, cannot be determined as the absorbance values were increased and decreased unevenly and comparison cannot be made with the standard curve as the data for the standard curve are not consistent giving inaccurate curve. Therefore no conclusion can be made about the glucose concentration in the shake flask. Supposedly, as the number of cell increased, the glucose concentration would decrease as the glucose consumption by the cells is increased. The dry cell weight in the other hand can be seen that there is an increment from the beginning of the cultivation until the 6th hour and showed unstable changes until the 24th hour. Supposedly, as the number of cell increased inside the shake flask, the cell dry weight also should be increased. Introduction Fermentation can be carried out as batch, continuous and fed-batch processes. In this experiment, the shake flask fermentation is being used. Shake flask fermentation is the example of batch fermentation. In shake flask, the culture flask usually Erlenmeyer flask is being used to place and growing the microorganisms. It is the cheapest and easiest way to culture microorganism aerobically, in small volumes of nutrient broth. It is a small scale equipment which equivalent to stirred tank bioreactor. In order to prevent any contamination to the culture, shake flask must be plugged. Different plug can be made of cotton-wool, glass wool, polyurethane foam, gauze or synthetic fibrous material. The plug has to prevent airborne microorganism from getting into the medium while at the same time allowing free flow of air into the flask. The cultures are incubated at certain temperature and shaking frequency in an incubator shaker to achieve a required growth rate. The shaking agitates the medium and the culture to keep the mixture relatively homogeneous and also to ensure aeration, creating an aerobic condition. In batch culture, there is neither input supplied nor output generated throughout the fermentation. The medium culture is initially inoculated with the microorganism. The growth keeps increasing until at certain extent, the growth is inhibited because of the decreasing substrate concentration and the presence of toxic metabolites. Aims To study the growth kinetics of microorganism in shake flask experiment To construct a growth curve including lag, log, stationary and death phases To determine the Monod parameters Theory Shake flask fermentation is one of the examples of batch fermentation. Batch culture is an example of a closed culture system which contains an initial, limited amount of nutrient. The inoculated culture will pass through a number of phases. After an inoculation there is a period during which no growth appears to take place. This period is referred as the lag phase and may be considered as a time of adaptation. In a commercial process, the length of the lag phase should be reduced as much as possible. Following a period during which the cell gradually increases, the cell grows at constant, maximum rate and this period is known as the log phase or exponential phase. The exponential phase may be described by the equation below: =  µx -1 where x is the concentration of microbial biomass t is the time, in hours  µ is the specific growth rate, in hour -1 on integration, equation (1) gives = 2 where is the original biomass concentration is the biomass concentration after time interval, t hours During the exponential phase, the organism is growing at its maximum specific growth rate, for the prevailing conditions. Equation 2 predicts that growth will continue indefinitely. However, growth results in the consumption of nutrients and the excretion of microbial products. Thus after a certain time the cell growth rate will decrease until growth ceases. The cessation of growth may be due to the depletion of some essential nutrient in the medium when there is limitation in substrate. The decrease in growth rate and the cessation of growth due to the depletion of substrate may be described by the relationship between  µ and the residual growth-limiting substrate as follows:  µ = where = maximum growth rate s = residual substrate concentration = substrate utilization constant The stationary phase in batch culture is the point where the growth rate has declined to zero. In the other word the growth rate is equivalent to the death rate. The cell death is might due to the nutrient limitations due to their incorporation into cells during log-phase growth or a build-up of toxins due to their release of fermentation products also during log-phase growth. The death phase is the result of the inability of the bacteria to carry out further reproduction as condition in the medium become less and less supportive of cell division. The nutrient is extremely insufficient for the growth of the microorganism. Eventually, the number of viable bacterial cells begins to decline at an exponential rate. Industrial fermentation is usually interrupted at the end of the exponential growth phase or before the death phase begins. Apparatus and material E.coli Luria Bertani Broth Distilled water Shake flask Cotton-plugged Incubator shaker Cuvettes Centrifuges Micropipetor Pipette tips Laminar flow 70% ethanol Lighter and Bunsen burner Graduated cylinder Schott bottle DNS reagent Procedures Part 1: Preparation of inoculated fermentation medium 500ml shake flask, bunsen burner, measuring cylinder, LB broth and inoculums are brought into the laminar flow. Under aseptic technique, 50 ml of media is transferred into 500ml shake flask. Then 6 ml of inoculums is added into the shake flask resulting in final volume of 56ml. The shake flask is plugged with cotton-plugged. The shake flask is swabbed with 70% ethanol. The shake flask is incubated at 350 rpm; T=30ËÅ ¡C; 24 hours. Part 2: Sampling for cell dry weight 1ml of biomass concentration is taken out. The 1ml biomass concentration is transferred into micro centrifuge tube. An empty micro centrifuge tube must be weighted first. The sample is then centrifuged for 10 minutes at 10000 rpm. After that, the supernatant of the sample is taken out carefully without taking out any biomass. The biomass is then left dried inside an oven at 80C for overnight. The dried biomass is then being placed inside a dessicator to let it cool before rapidly weighing on an analytical balance. Part 3: Glucose analysis 1ml of biomass concentration is taken out. The 1ml biomass concentration is transferred into micro centrifuge tube. The sample is then put onto turntable of YSI 2700 Select Biochemical Analyzer for direct analysis of glucose concentration. Another method of glucose analysis is by using DNS reagent. 1.5ml of DNS reagent is added into 0.5ml of the biomass sample inside a capped test tube The mixture is heated at 90ËÅ ¡C for 10 minutes to develop the red-brown colour. The heated mixture is then cooled to the room temperature for 2-3 minutes in a cold or ice water. The mixture is then being diluted with 10ml of distilled water. The absorbance is checked with a spectrophotometer. Part 3: Sampling for absorbance analysis/ optical density 2ml of biomass concentration is taken out and being transferred into micro centrifuge tube. The spectrophotometer is calibrated to zero by blank consisting of 2ml LB Broth. The biomass concentration is then being transferred into a cuvette and optical density measurement is taken with wavelength set at 600nm. More absorbance means higher number of cell. Part 4: The preparation of glucose standard curve The 20g/L, 40g/L, 60g/L, 80g/L and 100g/L of glucose concentration is prepared by weighing the suitable amount of glucose and diluted with 10ml of distilled water. 1.5ml of DNS reagent is added with 0.5ml of the glucose sample inside a capped test tube The mixture is heated at 90ËÅ ¡C for 10 minutes to develop the red-brown colour. The heated mixture is then cooled to the room temperature for 2-3 minutes in a cold or ice water. The mixture is then being diluted with 10ml of distilled water. The absorbance is checked with a spectrophotometer Discussions This experiment is carried out to study the kinetic growth of microorganism. E.coli is selected as the cell and being cultivated inside a shake flask. The growth of microorganism in shake flask is a simple method of fermentation. The nutrients for the microorganism are being supplied by the media which contain the carbon sources. The flask is shaken during the cultivation to mix the cell and the media; increase the homogeneity between these two and also to provide aeration for the cells. The culture is gone through the fermentation process for 24 hours. Within that period, the biomass/cell sample is taken out for every 3 hours to analyze the concentration of the cell (g/L), the cell dry weight and the glucose concentration. In order to analyze the concentration of the cell inside the flask, absorbance reading for the optical density is taken from the spectrophotometer. The higher the absorbance reading means higher number of cell presence inside the flask at a particular time. As for this experiment, the absorbance reading is increase from the beginning of the experiment until the 21st hour and decrease slightly at the 24th hour. It can be explained that the number of cell increase throughout the cultivation indicating that the cell is growing. In the other hand, the decrease in cell number in 24th hour indicating that the cell growth has reach its deceleration phase where the growth of the cell is started to slow down. The decelerating growth phase is where the culture is in a transient state. During this stage there are feed/back mechanisms that regulate the bacterial enzymes involved in key metabolic steps to enable the bacteria to withstand starvation. There is much turnover of protein for the cultu re to cope with this period of low substrate availability. In cell growth, the cell will go through several phases like lag, exponential, deceleration, stationary and death phase. In cell cultivation, the cells themselves need food or carbon sources like glucose for growth. In batch fermentation for example in this experiment, the glucose can be the limiting factor for the cell growth or we called it as substrate limiting growth. For this condition, the Monod equation can be used to predict the growth rate and the cell concentration inside the shake flask. In addition, the glucose concentration can be known by testing the cell sample into the glucose analyzer and the direct glucose concentration can be obtained. In other way, the glucose concentration is also being obtained by mixing the sample with DNS reagent. The DNS reagent will be reduced to 3-amino,5-nitrosalicylic acid in the presence of free carboxyl group (glucose) and absorbance reading can be taken through the spectrophotometer. As for this experiment, the glucose test showed no pattern of changes in absorbance values. These values increase and decrease unevenly. This might be due to some mistakes occurred during the glucose test where the volume of sample and DNS reagent that need to be mixed is incorrectly taken. This has affected the accuracy of the absorbance reading. From the absorbance reading, the concentration of the glucose can be obtained by referring to the glucose standard curve. The glucose concentration should be decreased as the number of cell inside the flask is increased. This is because as the number of organism increases, nutrients are consumed and becoming lesser. However, this cannot be shown from the results obtained due to some mistakes occurred throughout the experiment. Another analysis that can be performed to analyze the cell sample is by taking the dry weight of the cell. In this method, the cell is being taken out from cultivation flask and transferred into viral tube. The tube is the being centrifuged to separate the supernatant with the cell. The remained cell is then being dried inside an oven for 24 hours. The dry cell weight is finally taken to know the weight of the cell that present at particular time during the cultivation. In this experiment, the cell dry weight is increased from 0th hour until 6th hour and gradually decreased from the 9th hour to 12th hour and increased until the 24th hour. The cell dry weight should increase when the number of cell increased inside the shake flask. Conclusions At the end of this experiment, microorganism is suitable to be fermented inside a shake flask and it is a simple method to investigate the growth kinetics of the microorganism. Knowledge of microbial growth kinetics is essential to determine when to harvest the culture for different purposes. For a growth-linked product, it is desirable to harvest the culture at the late exponential growth phase. On the other hand, for a non-growth-linked product, it would be desirable to harvest the culture at the stationary growth phase. As microorganism will go through several phases in their growth, several analyses on the cell need to be done to know the growth kinetics of the cell and the duration for each phase. This includes the cell concentration, glucose concentration and also the cell dry weight analyses. This method can be done in the laboratory before the fermentation or the cultivation of microbes in large scale is performed. Growth kinetics deals with the rate of cell growth and how it is affected by various chemical and physical conditions. During the course of growth, the cells is continuously changing and adapting itself in the media environment, which is also continuously changing in physical and chemical conditions. In conclusion, the microbial culture in batch culture system (shake flask system) goes through a lag phase, exponential growth phase, decelerating growth phase, stationary phase and sometimes the death phase depends on the end product desired. The substrate concentration in the culture medium and growth parameters, such as glucose concentration changes correspondingly throughout the growth phases. Thus, the physiology of the microorganisms is always in a transient stage, subjected to a continually changing culture conditions. Consequently, product formation is confined to a certain period of cultivation, for example antibiotics would only be produced in the decelerating and stationary growth phases. The batch culture system is still widely used in certain industrial processes for example brewery industry because of its easy management of feed stocks. These advantages allow the use of unskilled labour and low risk of financial loss. Low level of microbial contamination in fermented products is at time tolerable, as long as the microbial contaminants are not pathogenic and do not alter the desired properties of the product, such as taste, colour and texture. Recommendations Aseptic technique must be practised when handling biomass concentration to avoid any contamination. Cuvette must be wiped cleanly to prevent any scratch that would affect the spectrophotometer reading during protein test. This experiment must be carried out under the laminar flow to prevent any contamination to the culture. The supernatant of cell concentration should be taken out carefully without any taking out of the biomass. The cap of the viral must be opened to fasten the drying process of the biomass in the oven. Wash hand after handling the culture. Disinfect the work area with 70% alcohol before handling the culture. Dispose of all contaminated materials in appropriate containers.

Ethical Philosophies and the Hippocratic Physician :: Philosophy Medicine

Ethical Philosophies and the Hippocratic Physician Twenty four centuries ago, Hippocrates created the profession of medicine, for the first time in human history separating and refining the art of healing from primitive superstitions and religious rituals. His famous Oath forged medicine into what the Greeks called a technik, a craft requiring the entire person of the craftsman, an art that, according to Socrates in his dialogue Gorgias, involved virtue in the soul and spirit as well as the hands and brain. Yet Hippocrates made medicine more than a craft; he infused it with an intrinsic moral quality, creating a â€Å"union of medical skill and the integrity of the person [physician]† (Cameron, 2001). So, how do we who are aspire to be Hippocratic physicians achieve this goal? First we must look at the foundations for our personal ethical frameworks through meta-ethics. Meta-ethics refers to the systems by which we establish morals and ethical principles. Today there are many philosophies of meta-ethics, divided into two basic categories, moral absolutivism and moral relativism (Lawhead, 2000). The difference between these is in the nature of ethical principles, whether subjective or objective. Say something exists objectively, like a vase on a table. The subject’s perception of the vase must conform to the true vase. If, however, the subject is simply thinking about a vase, that vase exists subjectively, and its properties are contingent to the subject’s contemplations. So, how do these differing systems affect the physician in attaining the Hippocratic ideal? Let us first consider relativism. To the Moral Relativist, moral principles are created within cultures and communities, coming from cultural folkways and mores (Gerson Moreno-Riaà ±o, personal communication). These principles are normative only in the culture which created them. Already, the Hippocratic Oath loses its moral weight. For example, in the 1973 Roe v. Wade abortion, Justice Blackmun dismissed the centuries-long Hippocratic tradition as merely a â€Å"Pythagorean manifesto,† relegating it to minority status (Cameron, 2001). However, relativism does not end here. If moral principles are defined by cultures, how does one define a culture? If a social scientist were to dissect cultures into subcultures, and then divide those as well, he could logically continue making â€Å"cultural distinctions† until he comes to individuals as separate cultures. As a culture of one, each individual by relativism’s definition creates his own moral principles. This could be called ethical egoism (David Mills, personal communication). As logical conclusion extension of relativism, ethical egoism creates a world of moral lone rangers, with no one responsible to answer to any other.

Pros and Cons using oil

Pros and Cons of using oil I want to talk about advantages and disadvantages of using oil in our world, people can use it for different reasons. We use oil for cars, airplanes etc. In some countries it is very expensive but in other countries it is much more cheaper because today its harder to find that's why its more expensive and may not be much left. Oil is very useful. For example, we can use it as an ingredient for our meal but also it used to accelerate the cars and how we also know doctors use oil in many medical reasons.I think advantages of using oil is that people can use it for different reason. People use oil for military reasons too. There are a lot of ways using oil. A lot of people now travel with plane, they couldn't travel if there wasn't oil. In war oil is used more because soldiers need to drive planes and cars and attack another country. People use oil to heat their houses. People use oil to get energy from it. When country is rich of oil its economy should be ve ry good. Because other countries buy oil from them. In big wars such as WWW andWWW oil was the main thing that was needed to win the war. And the countries who started the war they wanted to capture the places where there is a lot of oil. Nowadays oil is very useful. In some places oil Is very expensive because they don't produce oil but they buy it from other countries and they sell it expensive. But some countries sell oil much more cheaper because they produce oil in their countries. Disadvantages of using oil are that it makes pollution and a lot of people die because of that. People have used oil for centuries but using it made pollution. Pole used fuel smokes to kill another people. Usually they used It In wars. Burning oil produce carbon dioxide and It causes global warming. Passing near a car that brings out smoke,one starts to caught because the carbon dioxide that Is released from the car Is going to ones kings and It can result with serious problems to ones health. And us ed OLL Is hard to recycle and a lot of factories produce carbon monoxide by giving it out to the air. People start to breath with this air. I think In our time Oil Is very useful because without OLL we can not survive.People can not use electronically devices or we can not move without cars or planes. We would need more time to go to some places without planes. But It would be better because there would not be pollution and people could live longer. In some places oil is very expensive because they don't produce oil but they buy it from other countries and they sell it expensive. But pollution. People used fuel smokes to kill another people. Usually they used it in wars. Burning oil produce carbon dioxide and it causes global warming.Passing near a car that brings out smoke,one starts to caught because the carbon dioxide that is released from the car is going to ones kings and it can result with serious problems to ones health. And used oil is hard to recycle and a lot of factories produce carbon monoxide by giving it out to the air. People start to breath with this air. I think in our time Oil is very useful because without oil we can not survive. People can not use time to go to some places without planes. But it would be better because there would

Examine the way in which Bluetooth integration functions with Wi-Fi modems The WritePass Journal

Examine the way in which Bluetooth integration functions with Wi-Fi modems Introduction Examine the way in which Bluetooth integration functions with Wi-Fi modems IntroductionAimObjectivesDeliverablesBluetoothThe Bluetooth Special Interest Group (SIG)History the name BluetoothReferenceRelated Introduction Bluetoothâ„ ¢ is a revolution in wireless technology specially short-range digital communication among computing and communications devices. It is a latest wireless communication technology for exchanging data over short distances, and is an attempt to get rid of computers jungle of wiring. Using a special radio frequency to transmit data, it creates a short range network. It is very secure and can connect up to eight devices. Bluetooth wireless technology enables robust, secure, wireless connections between portable and fixed devices. So the main features of Bluetooth technology are robustness, low power, and low cost. Bluetooth can improve in any short distance communication system like medical instrument, end to end data transfer etc. It has high mobility which means it can be moved anywhere, long life battery which means it lasts longer than any other equipment and it has no infrastructure to support model. This project consists of building a remote health monitoring system which provide a autonomous system for regular patients. The project is designed to meet its aim to provide a plug-and-play system which run over router and transmit data through Bluetooth. A Bluetooth adaptor will be built whose has input from Bluetooth and output via Ethernet/Wireless device. The Tele-health (TH) technology has invented so many systems so far which are helping patients cope, manage and improve their health condition. It has been also used to reduce the workload of healthcare practitioners specially for those patients whose need to visit practitioners regularly basis. However, current TH systems often require patients to actively interact with the technology and this is major drawback of all current TH technologies. The reason being that the elderly patients who are suffering from chronic condition, may find it difficult to interact with new TH technologies. Therefore, our proposal aims to provide a plug-and-play system which permits all ever-present connectivity between different components of the TH system with requiring minimal input from patients [1]. As stated before, this project intends to develop an end-to-end TH system that permits monitoring and feedback solution which uses every-possible technology, e.g: mobile phone technology (GSM, 3/4G), IEEE (Institute of Electrical and Electronic Engineers) Bluetooth Wi-Fi, xDSL (Broadband) communication standards and even in POTS (Plain Old telephone service) as well. Furthermore, an automatic feedback mechanism on the reading of patients health parameter will be embedded in the system.   Thus, if a location has limited or no mobile phone network coverage, especially in rural areas, then the access point approach to data transmission would be adopted [1]. Currently, there are already so many TH systems exist in the market. TH system currently developing and different health organizer are adopting new TH systems. Moreover, so many universities are researching about new technologies TH systems. Lets consider a scenario where this TH system would be use for: With this TH system, patients will take their blood pressure measurements at home using a Bluetooth enabled or adaptable specific kind of monitoring device. In this project, an extra mobile will take place instead of that monitoring device which is enable to send the reading of specific measurement, taken by patients. This mobile is Bluetooth enabled and have a special designed software that helps to connect another Bluetooth enabled device (patient mobile) and transmits data to that device. The patient mobile is a remote device that uses for building connection with PC and whatever data come from the first mobile (monitoring device), passes to PC automatically. The patients mobile a lso capable to receive any feedback from the doctor as well. The PC works as an end-to-end device in this project which is connected with internet. The PC is capable and send any data received from patient mobile to a particular email address. The whole mechanism will be designed and build to transmit and response automatically. On the other hand, The doctor receives readings of a particular patients and send the feedback for that readings via PC and Internet. The patient mobile has a special kind of software which is enable to receive a feedback coming from the doctor. The whole system is represented graphically in figure 1. Aim The aim is to design and build a plug-and-play Bluetooth interface (within laptop) that connects Bluetooth enabled phones with a doctors surgery using a designated patients email address.   The patients phone sends his/her latest results using Bluetooth to the interface which then sends an email to the surgery.   This avoids expensive text messaging (multiple users increase cost). The doctor then has daily information on patients condition allowing them to make more appropriate decisions regarding their healthcare.   It importantly also allows patients to carry on their daily life as normal, knowing that their latest results are being considered rather than intermittent results while visiting the doctors surgery. Although this work is demonstrated using Wi-Fi, it could easily be done with a simple ADSL modem connection via a network cable.   The system works in both equally. Whats important is that there is an internet connection and a PC within the home or a phone with internet connection. Objectives To do background reading and investigation about Bluetooth technology, Ethernet/IEEE standard 802.11 and Wi-Fi modem. To design a Bluetooth interface which makes connection between two Bluetooth enabled mobiles and a PC. To construct a Java program using J2ME for first mobile (monitoring device) to create a connection with second mobile and sending message over that phone. To construct a Java program using J2ME for second mobile (Patients mobile) to form a bridge connection between first mobile and PC to transmit data via that mobile. To construct a Java program using Java SE for PC to create connection with webmail server and send data in that mail address automatically. To test the connections using two mobiles and check for errors and limitations. To build a PC application using Java SE to give feedback from that webmail server remotely to any mail server. To construct a mobile application using J2ME for second mobile to have access in an inbox of a mail address to receive a feedback. To test PC application and mobile application and check errors and limitations. To integrate and test whole interface and all programs. To investigate the limitation and problems of the whole system and find solutions about them. To investigate the implementation of   that Bluetooth interface for future purposes. Deliverables Project arrangement form: To be completed by Friday 8th October 2010 Interim Report: This report explains the aims and objectives of this project. The requirement for the project and planned technical approach also is included. This report will be submitted by Friday 5th November 2010 and received feedback from supervisor by Friday 19th November 2010. Draft Final report to supervisor: A draft version of the final project report must be submitted for feedback to the supervisor by Friday 25th March 2011. Final project report: Final Project e-Report must be submitted by Tuesday 3rd May 2011 through TURNITIN for plagiarism checking and Final Project Report and log book must be submitted to Faculty office by Thursday 5th May 2011 as mentioned in the Unit Guide. Project Viva and Presentation: Project Viva and Hardware/software Demonstrations will take place in 2nd Semester Examination Period. Constructed Hardware/Software: This project contains both hardware and software part which need constructed. A network adaptor need to design and build and a program which support this adaptor need put together as well. Technical Background and Context Bluetooth The term Bluetooth TMrefers to an open specification for a technology to enable short-range wireless voice and data communications anywhere in the world [2]. Bluetooth technology also uses radio waves like all other communication medium. Bluetooth technology sends information within your own personal space, which is called Personal Area Network (PAN) at distance up to 10 meters. Now-a-days every single communication device has Bluetooth built-in. The Bluetooth Special Interest Group (SIG) has produced an open specification for Bluetooth wireless communication. The reason behind being open specification, this is publicly available and royalty free. To help advance extensive acceptance of this technology, an open specification has been a primary objective of the SIG (The explanation of SIG will be later on). Bluetooth technology is a short-range communication technology that is simple, secure, and everywhere [3]. It is planned for replacing the cables connecting devices. It also maintains high level of security. Thats why Bluetooth wireless technology is widely accepted by public so much that this technology is built into a wide range of products, from cars and mobile phones to medical devices and computers. With Bluetooth technology, these devices can communicate without having any wire over a single air-interface, using special kind of radio waves or frequency to transmit and receive data. So Bluetooth is a way of exchanging data wirelessly over short distances, and is an attempt to do away with your computers jungle of wiring. Bluetooth is a piece of hardware or a small computer chip that contains the Bluetooth radio, and some software that lets the users, connect devices using Bluetooth technology. Thats why Bluetooth is very cheap and a very small sized chip which can fit in any kin d of device. Even with Bluetooth technology, making connections is as easy as just powering up the device. The Bluetooth radio transceivers operate in the globally available unlicensed ISM radio band of 2.4 GHz. The ISM (Industrial, Scientific, and medical) bands include the frequency ranges at 902 MHz to 928 MHz and 2.4 GHz to 2.484 GHz, which do not require an operators license from a regulatory agency [4]. Now, the question arouse: why do we need one more wireless technology? By comparing all other existing wireless technology with Bluetooth, it can be much more clear about why we need one more wireless technology where there is so many successful wireless technologies. It is also going to give much more details about Bluetooth technology. If infrared and Bluetooth devices can support many of the same applications, why do we need both technologies? Infrared transceiver must need to see each other eye to eye   and devices must be in a few feet apart, otherwise transmission will fail. Bluetooth overcomes the distance limitation by having a nominal range of about 30 feet (as stated above). Another sense is Bluetooth works like radio, so transmissions are Omni-directional. Bluetooth can penetrate solid objects and its capability to communicate with other devices in a network called piconet allows for data exchange opportunities that are very hard or impossible with infrared. When it comes to data transfer speed, Infrared can transmit data at very high speed of 4 Mbps while Bluetooth can only at 721 Kbps though new versions of Bluetooth technologies are coming. Now 802.11b (wireless LAN) is to connect large devices that have lots of power at high speed typically 11 Mbps within distance of 300 feet. Though less distance and transmit speed, Bluetooth is to connect peripherals like PDAs and mobile phones and consume less power 500 times. So its not definitely replaced by 802.11b (wireless LAN). 802.11b (wireless LAN) cant be use instead of Bluetooth for transmitting between peripherals. The radio uses 2.5 mW of power. Bluetooth has been designed to have very low power consumption. The Bluetooth Special Interest Group (SIG) As previously described, Bluetooth wireless communication is personified as a technology specification. The body manages the development of Bluetooth standards and the licensing of the Bluetooth technologies and trademarks to manufacturers is called the Bluetooth Special Interest Group (SIG). The Sig is a privately held, not-for-profit trade association founded in September 1998 [5]. There was no Bluetooth SIG headquarter or no Bluetooth corporation or any sort of legally incorporated entity until 2001. The SIG built-in and is now officially recognized as the Bluetooth Special Interest Group, Inc in February 2001. Now the SIG is headquartered in Kirkland, Washington with Michael W. Foley presently its executive director [5]. Currently the SIG is comprised of more than 14000 member companies. The SIG has local offices in Hong Kong, Taiwan, China, Korea, Japan and Sweden. The SIG depends upon the contributions and participation of its member companies. Clearly a major task of the SIG h as been to develop the specification, but other SIG activities include joint work with other consortia and standards and regulatory bodies, educational and promotional events such as developers conferences and the definition of a testing and certification process [2]. Bluetooth technology was visualized by engineers at Swedish telecommunications manufacturer Telefonaktiebolaget LM Ericsson who realized the necessary of global short-range wireless communication. In 1994 Ericsson had begun a project to study the feasibility of a low-power, low-cost radio interface to eliminate cables between mobile phones and their accessories [2]. The Bluetooth SIG was formed to focus on developing open specification by the leading companies in computing and telecommunication in early 1998. The founding companies of the SIG are Ericsson, Intel Corporation, International Business Machines Corporation (IBM), Nokia Corporation and Toshiba Corporation. These companies formed the original core group of the SIG, actually known as promoter companies. History the name Bluetooth The engineers at Ericsson code named the new wireless technology Bluetooth to honor a 10th century Viking king in Denmark. Harald Bluetooth reigned from 940 to 985 and is credited not only with uniting that country, but with establishing Christianity there as well [4]. Harald name was actually Blatand, which roughly translates in English as Bluetooth. It seemed perfect to the SIG founders to name the organization that was intended to unify multinational companies after a Scandinavian kind who united countries. Thus the Bluetooth name was initially an unofficial code name for this project but today has become the trademark name of the technology and the SIG. Figure 2 is showing the logo, inspired by the initials H B for Harald Bluetooth. In 1994, Ericsson Mobile Communications, the global telecommunications company situated in Sweden, initiated a study to investigate the feasibility of a low-power, low-cost and wireless interface between mobile phones and their accessories. The main aim of this study was to find a way to get rid of the cables between mobile phones and their accessories. Reference 1)  Ã‚  Ã‚  Ã‚  Ã‚   Dr. S. Dudley-Mcevoy, Proposal for Synchronous Patient Reinforcement Incorporating Tele-medical Environment (SPRITE), London: London South Bank University, November 2010. 2)  Ã‚  Ã‚  Ã‚  Ã‚   B. A. Miller, C Bisdikian. Bluetooth Revealed, 2nd edition. New Jersey: Prentice Hall, 2002. 3)  Ã‚  Ã‚  Ã‚  Ã‚   Bluetooth SIG, â€Å"Bluetooth specification†, online, available from: bluetooth.com. [accessed 12th APR 2011] 4)  Ã‚  Ã‚  Ã‚  Ã‚   N. J. Muller. Bluetooth Demystified. New York: McGraw-Hill Telecom, 2001. 5)  Ã‚  Ã‚  Ã‚  Ã‚   Wikipedia, Bluetooth Special Interest Group, online, available from: http://en.wikipedia.org/wiki/Bluetooth_Special_Interest_Group. [Accessed 13th APR 2011] N. Eddy. Bluetooth SIG adopts Low Energy Version 4.0, eWEEK Europe UK, 2010. [Online] Available from: eweekeurope.co.uk/news/bluetooth-sig-adopts-low-energy-version-40-8224 [Accessed 14 APR 2011

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Article Aalysis - Coursework Example In seeking to understand the article which was selected for this brief analysis, US fuel prices take a slight dip†, the reader sees very clear and inherent understandings of the way in which fuel prices within the United States, and elsewhere throughout the world for that matter, are not directly linked to the ability of the environment to produce this resource and/or the overall expectation of the diminished resource in general. Rather, the price of fuel/oil is ultimately tied to the expectation of stability in the world . Moreover, unity and stability within a particular region that is somewhat close or geographically important to a trade route can send oil prices skyrocketing. As such, it is easy to understand why the past several months have seen a market spiked with regards to the price of oil worldwide. ... Such a judgment is made with respect to the fact that without major alterations with regards the way in which the global economy interacts, individuals are not able to alter their consumption of oil without widespread and far-reaching repercussions being felt within their own personal life and within the broader economic sense of their respective regions. In seeking to fulfill a further requirement of this brief analysis, the instructions indicated that the student was responsible for describing what is occurred to the change in supply of the particular product. In short, nothing has changed. Rather, fear within the futures market has driven up price and caused investors to panic with regards to what may be the case within the next few months/years. Yet, it is unfair to say that changes in supply do not occur within the oil market. Hardly a week passes without an article being written, or a newsworthy item being referenced that considers the way in which the oil-producing nations of the world (OPEC) have either increased or reduced supply as a means of deriving up or driving down prices of oil (Piazza, 2013). Much as they have within the past, Saudi Arabia has been responsive to the increased price of oil throughout the world and has increase the output from their wells so that the price of the substance in question could be nominally reduced. However, all that being said, it is painfully obvious that the ultimate reason for why fuel prices have begun to drop does not have to do with the increased output of one single oil-producing nation; rather, it has to do with the fact that the United States, the Russian Federation, and Syria have all agreed on a tentative resolution through which a United States backed

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Lab Essay Example | Topics and Well Written Essays - 250 words - 1

Lab - Essay Example In order to ensure accuracy and precision, it was necessary to re-calibrate the spectrophotometer three times at every new wavelength set. Recalibration of the spectrophotometer was done by filling the cuvettes with deionized water and altering the wavelength to 470 nm, 565 nm or 635 nm. Before starting the spectrophotometer, ensure that the lid is closed. Results were obtained by running each sample three times at every new wavelength set. The new wavelength for the second part of the experiment was then obtained by comparing the recorded data. The results indicated that the blue dye had an absorbance of 0.211 for the 565 nm wavelength that correlates to the green wavelength that was the highest when compared to the red and green. After choosing the dye, 10 different stock solutions with concentrations that range from 0% to 100% by increment of 10 dilutions were made. The concentration of the standard solution (the 100% concentration of dye) was reduced by diluting with deionized wa ter, in a graduated cylinder, to make the dilutions that depended on the calculations made. The dilutions were then placed into the spectrophotometer to obtain their percent transmittance. The data was then recorded into a

Knowledge, Attitudes and Behavior of School Teachers towards Healthy Research Paper

Knowledge, Attitudes and Behavior of School Teachers towards Healthy Eating, in Dubai, UAE - Research Paper Example Thirdly, the study was focusing on outlining some of the implications caused by inadequate knowledge among educators. The information will offer a glimpse into necessary preventive steps and measures necessary for teachers towards when working towards creating a safe and healthy environment for learners. A healthy society is a society that invests in the health of its generation. Due to this, it is a critical aspect to ensure that the society puts in place workable measures that will promote the healthy development of the children. Children who do not develop in a healthy manner tend to face difficulties later in life (Wang, Monteiro, & Popkin, 2002). As a result, the entire society suffers. It is for this reason that this study sought to investigate and provide solutions to some of the challenges teachers face when providing information on health risks facing children. The researcher made it possible for all the teachers to have a clear understanding of how the value of knowledge among teachers and how it is necessary in fostering learning. It is vital to study and come up with significant ways to ensure that teacher have the right equipment for promoting children’s health. Conducting a study is one of the most important aspects of dealing with an issue. In this case, the researcher sought to lay out some of the problems and challenges facing the entire society. Through the study, it is quite evident that teachers in primary schools require adequate information on healthy living. The research findings give a glimpse of some of the ways that teachers can use in promoting healthy living among children. Due to this, the study is unique in that it focuses on teachers and not just the students. Furthermore, it provides insights into some of the problems facing health educators related to knowledge. It goes a step further and provides insights on how the society can empower the teachers. It is worth noting that providing information is

Life Is What You Make It Essay Example for Free

Life Is What You Make It Essay It When thinking about my view of the world, there is a jumble of different philosophies, beliefs, and ideas going on in my head. There is so much to take into consideration, and it seems that everything is connected but also scattered in a way that it is hard to really be able to dig deep and explain on paper what my worldview is. After many headaches and deep thoughts, I boiled it down to the things that I could not get out of my head. No matter how hard I tried, I could not get rid of these thoughts when thinking about what to say. These key parts of my worldview are that I believe in the theory of evolution and the big bang theory, not that God created Earth. I believe there is not a higher figure that determines where you go when you die. I also believe in a person’s right to make choices regarding their own life. Although my values and beliefs may have been shaped from the people around me, I feel that I have values and beliefs that are truly my own and are not what other’s want me to value and believe in. One of the first things that comes to my mind when hearing the word worldview, is my view on whether or not there is a god and an afterlife. When I was a baby, I was baptised in the Catholic church,but I do not attend church on a weekly basis, and never have. Because of never going to church, I have very little knowledge of the Bible, and the beliefs of Catholicism. Having this little knowledge about religion versus the facts that I have learned in science class makes it very easy for me to believe in the scientific theory of evolution. I have a hard time believing that God created Earth and all its creatures, and even that there is a God. Which leads me into my view on afterlife and how you get there. I believe that there is somewhere you go when you die. I do not believe that you just rot in the ground. However, I do not necessarily think that it is heaven and hell, but I’m not quite sure what it is yet. As far as getting to the afterlife, I do not believe that there is one figure deciding where you go when you die based on the way you lived your life. Since my values were not based on religion, I believe in the freedom for a person’s right to choose regarding their life and death. Abortion, assisted suicide, homo and heterosexuality are all examples of the freedom of choices that I believe in. I think people have the right to make their own choices regarding their personal life, without the judgement from God or even other people. Another very strong value that I have is that I think it is wrong to judge someone based on their skin color, religion, body type, sexuality and even the opinions they have. I think that it is right to abide by rules and laws. If the majority of our society did not follow the laws that we have, America would be in chaos. I like the idea of a democracy, that everyone who wants a say gets one, but yet there is a group of people who keep society organized. In my opinion, my values, beliefs and what I think is right and wrong have been shaped from different influences. Obviously, the first influence came from my parents. Growing up in their household has definitely shaped my beliefs. For example, my parents taught me to abide by the rules given to you. But there are also some things that I do not agree with my parents on. For example, my father thinks being gay is wrong, I strongly disagree with that. Another factor influencing my values and beliefs is my peers. My values resemble my closest friends’ values and beliefs and because we have common views and that is why we are so connected. I grew accustomed to their values and beliefs because of being around my friends so often. In conclusion, my worldview is that there is no higher figure that determines your fate during life and when you die. Each individual personally has the right to make choices regarding his or her own destiny in life. I believe that my knowledge from science classes taught me that the Earth was created because of a big bang in the universe which is more powerful than my knowledge of how God created Earth and it’s species. My values and beliefs are truly my own, yet they would not be the same if I did not have the guidance and knowledge from my parents and peers.

Ports Of Coromandel Coast History Essay

Ports Of Coromandel Coast History Essay When we talk about the term Coromandel, we see that it is generally believed to have hand and very early historical past and the term Coromandel, widely held to be derived from the classical Tamil regional name Colamandalam, when applied to the eastern coast of India has come to embrace a wider geographic area than that for which it was originally used. The visitor of the 19th century would be struck by the description given to Coromandel by the 17th-century writers. What exactly distinguishes both these sets of observations is that the 17th-century idea of Coromandel is too vast and wide than that of the 19th century and secondly it divides the Coromandel into two neat parts with the Godavari river as the dividing point. For contemporary visitors of the seventeenth century to the area, the Coromandel Coast was the wide expanse of Indias eastern coast from point Calimere, where the coastline takes a sharp northerly drift, to near the 200 N latitude or the port of Ganjam. It was divid ed into two parts, the north and the south, with the Godavari point being the dividing the between the two. In later times the Coromandel Coast proper was held to be to the south of this Godavari point and the north was known as the Gingelly coast or Golconda coast. By the seventeenth century usage, the term embraced the coastlines of the modern states of Tamil Nadu, Andhra Pradesh (Telugu Desam) and the southern tip of Orissa  [1]  . Contemporary visitors to the area looked upon the entire coast as forming one trading region, with common patterns of trade, common characteristics of seafaring and a broadly similar hinterland. The extent to which they were justified in this will become clear in the succeeding pages, where the trade of the region is considered  [2]  . This justice is the whole point that the geographical regions do not have an inherent constitution and are not defined merely by physical phenomena like rocks Rivers, mountains and many other such naturally occur ring features. On the contrary, the human interaction with the region produces the region and thus we see that during the pre-modern period the Coromandel was region whose prime importance to outsiders was trade, whereas in the centuries preceding the mediaeval period no such large-scale trading activity was found. Therefore the constitution of the region of Coromandel by the Europeans was based on trade that took place during the height period of capitalism in Europe. Another striking feature of the Coromandel cost and in general the western coast of India was the absence of natural harbours and also naturally occurring features conducive for shipping. This is one of the reasons that for trade to take place in the Western coastline of India was easy though the continental shelf was very deep. In the eastern coast, the low continental shelf and lack of deep harbours hindered the moment of big vessels from the reverse to the ocean. In the whole Coromandel coast, there were only very few points that are very favourable for shipping and it is only logical that, these points have become the major ports. A brief description of the ports would help us in understanding the nature of the moment of vessels and consequently the trade patterns. The western shores of the Bay of Bengal were generally inhospitable for shipping. There were no naturally endowed havens on the coast comparable to the Trincomalee Bay in eastern Ceylon. Kakinada, the place that came n earest to such a natural harbour, did not have other favourable characteristics as a trade outlet and was not one of the major ports of the area in the seventeenth and eighteenth centuries. Most of the ports of outlet were either exposed to the full force of the elements of the ocean or were sheltered behind mouths of rivers and creeks with problems of entry and exit created by shifting channels and sand bars. The coastline was generally flat and sandy with the exception of its northernmost parts, where it is somewhat undulating and less sandy. There were no soundings to help incoming ships outside half a degree from the coastline, a situation that contrasts with the eastern shores of the Bay of Bengal which had soundings 4 degrees from the coast. The northernmost port of Coromandel with some significance in coastal and oceanic trade in our period is Ganjam, situated at latitude. 190 22 N, longitude 850 3, at the mouth of river Rushikulya. It is better known in the records in the eighteenth century than it is in the seventeenth, but this may be because of increasing European interest in it. Ganjam was typical of the river mouth ports of Coromandel, with shifting sand banks and narrow channels. The banks were of sufficient depth to allow country vessels through and the river was navigable for some distance inland, being of considerable size. The surf was heavy and large vessels anchored on the roadstead. They were reached by the many local boats that operated from the river. The port derived its strength from the fertile Rushikulya valley, from where and from neighbouring Orissa rice was transported there for export. It was an important port in the coastal trade southwards to Madras, Paleacat and other places where rice was in demand. In the eighteenth century, as the south became an area deficit in food grains, Ganjam became the starting point of a provisions lifeline to these places. Ganjam was also proximate to textile producing centres. There is no evidence that it was prominent in the oceanic trade in our period, but appears rather to have been a feeder port to some of the neighbouring export centres of Golconda.  [3]   About twelve miles south of Ganjam is the port of Gopalpur, a port not of any great significance in our period, though it grew in importance in the nineteenth century. It does not find a mention in the contemporary travellers accounts, nor does it feature in the trade of the companies. In the nineteenth century it seems to have been looked upon as the principal port of the Ganjam district and to have become prominent in the export trade in rice, probably drawing trade away from Ganjam port. About twelve miles south of Gopalpur is the port of Sonapur, about which little is known, though there are enough hints of its undoubted commercial activities. There was a tradition related by merchants of Sonapur late in the eighteenth century that, because of a caste disputes among merchants at Ganjam, komatties decided to leave that port and settle in Sonapur. The shift seems also to have been caused by the need to escape oppressive taxation at Ganjam. Near it inland was the important market to wn of Berhampur. It appears that there were some major suppliers of textiles among these merchants, from which it could be inferred that the port was a fedder of export piece goods to other larger ports in the area  [4]  . The next port in the south of any significance was Kalingapatnam at the entrance to the Vamsadhara river, known to contemporaries as the Kalingapatnam river. It was an open roadstead, protected on the south by a sandy point and some rocks, and provided safe anchorage. It is referred to occasionally in contemporary records, but little is known of its trade except that it drew on the rich rice growing and textile producing hinterland. About fourteen miles south of Kalingapatnam, on the Langulya river, is the town of Srikakulam known among the contemporary Europeans as Chicacole. It was situated about four miles upstream on its northern bank. Its port of outlet was Mufaz Bandar at the mouth of the river. Srikakulam was a district administrative capital under the Golconda kingdom and later under the Mughal empire. It was an important market for the supply of textiles from several weaving villages all around. Over time, however, the entrance to the river Langulya got choked and the port w as not functional any more. There is evidence that this was happening in our period, since much of the cloth of Srikakulam was being transported by land northwards to Kalingapatnam or southwards to Bimilipatnam. A prosperous hinterland based on a surplus of rice cultivation and craft production with the primary emphasis on textiles mark to some of the ports like Kalinga Putnam. The rich land was very conducive for rice cultivation and the prosperity of this agricultural base led to diversification into production of cotton and textile production. With the increase of time, many of the weavers who worked part-time due to the uncertain nature of demand became full-time weavers and and did not participate in agriculture. This shift in patterns of production was mainly due to the development of the port over the centuries. Bimilipatnam, situated on latitude 170 53 N, longitude 830 27 E, was an important trading port in our period. It was more important than the major modern port of Visakhapatnam, which lies about fifteen miles to its south. The coastline between Bimilipatnam and Kalingapatnam is dangerous and inhospitable, with a submerged ledge of rocks within six miles of the shore. Nor did the hinterland provide opportunities for trade. Bimilipatnam, port, though an open roadstead was reasonably well protected by headlands and provided safe anchorage in both south-west and north-east monsoons, being thus one of the well weather ports of this coast. It was therefore the resort of a large native shipping fleet, both the small coasting vessels and the large ships that sailed to Bengal and across the Bay of South East Asia. It was above all the chief rice exporting port of this coast, the main supplier by sea to South Coromandel, Ceylon and the Malabar Coast. The Dutch physician, Daniel Havart, who live d for many years in Paleacat, called it a rice bowl for Ceylon and other ports. The large East Indiamen of the European Companies would resort here to pick up food supplies before sailing on long journeys. Dutch ships sailing from Masulipatnam to Malacca and Batavia called here on the way to stock up rice, meat and other foodstuffs for the journey. It was also a port for the export of textiles to South East Asia  [5]  . Among the small ports listed on the eastern coast was Visakhapatnam as it was only rudimentary stages of development, though it had very good natural harbour that was only waiting to be developed. To the south of Bililipatnam was Visakhapatnam, which as noted above, had not yet achieved its subsequent importance. Situated on latitude 170 42 N, longitude 830 17 E, it was recognized as a port with natural advantages. It lay on a river which was barred at the entrance but, with eight to ten feet at the shallowest, was capable of admitting boats and ships of some size. There were a number of recognizable landmarks in approaching this port. While considerable interest has been paid to trade, not much focus has been levied on shipbuilding and by extension the repairs of ships in the eastern coast of India, whereas the western coast traditionally hand been engaged in shipbuilding activities to cater to the Arabian African demand. It is in this respect that we see the race of Visakhapatnam a s a new port endowed with facility for both trade and shipbuilding. The convenience of the river le to the construction here of some dockyards, even in our period, for repairing ships, though the port was not yet the major centre of ship building on the coast. These facilities attracted European shipping increasingly to this port in the eighteenth century, when it began to grow in importance. Proceeding southwards from Visakhapatnam, the next point of interest on the coast is Coringa Bay and a number of points in it within close proximity to each other: Coringa, Kakinada, Ingeram, Bandarmalanka, Yanam, and Jagannathpuram. There is evidence of all these ports being in the use in varying degrees at various times. Yanam, Ingeram and Jagannathpuram are on branches of the Godavari river in its delta area and were approachable in small boats and country vessels which good brought goods through to ships anchored in the Bay. At the bar of these rivers the water was shallow and no vessels of any substantial size could get through. These ports do not feature prominently in the seventeenth century, though it is possible they were mainly places of indigenous trade. In the eighteenth century they were frequented by Europeans looking for supplies of textiles in the region. The English shipped goods from Ingeram, the French from Yanam and the Dutch from Jagannathpuram. The Dutch were qu ite enthusiastic about Jagannathpuram later in the eighteenth century, referring to it as a good port and convenient place to ships goods. In fact by the end of the eighteenth century, when Dutch fortunes on the Coromandel Coast had sunk low in the face of English expansion, this was one of two places they were keen to retain for their trade  [6]  . The rise of Jagannathpuram is an instance of the constant dynamism in the status and activities of ports along the coast caused by a variety of internal and external factors. To the south of this cluster of ports of the Godavari delta, on the west branch of this river, the Vasishta Godavari, also called Narsapore river, is the town of Narsapore with its port and docks. On the bar of this river was eight to nine feet of water at low tide, and inside the river, in the passage to the town, was three to five fathoms of water. The town is about six miles from the river mouth and could be entered by every type of vessel that was then in use. Adjoining Narsapore is the town of Madapollam, almost a suburb of Narsapore. Both these places, especially Nasarpore, were ship building centres, with excellently appointed dockyards for building, sheathing and caulking ships. Ships were built here for the Golconda royal merchant fleet, for native merchants and even for the companies and European free merchants. Bowery refers to a ship built in his time in Narsapore for the king of Golconda of 1000 tuns. European ships made use of these facilities in the seventeenth and ear ly eighteenth centuries and had vessels for their Asian trade built here. Ship building timber was shipped down river from the upper reaches of the Godavari river. The iron and steel foundries of the upper Godavari provided the raw materials for nails, couplings and anchors. Ropers and cordage were made there from coir imported from Ceylon, Malabar and the Maldives. The English and Dutch set up their own dockyards, employing their own personnel after some years . The Dutch, in particular, set about it with their customary thoroughness, bringing master carpenters, shipwrights and iron founders from the Netherlands and employing a large Indian skilled and unskilled labour force  [7]  . All the places did not develop based only on purely commercial considerations like trade, as we see that there are also many other considerations like good weather and fresh and clean air that captivated the British. This is more important for them when they needed to take a rest from places nearby. The two places were therefore not so significant as ports of trade, though there was some export of textiles from the neighbouring weaving villages, as for their ship building and repairing docks. They also had a reputation among Europeans for their clear fresh air, and company servants living in Masulipatnam (which was notoriously unhealthy) used to treat them as health resorts and have country residences there to which they would often retire. By the beginning of the eighteenth century the decline of these two river ports as centres of commerce and ship building had started. Madapollam was abandoned earlier because of the encroachment of the Godavari. The decline of Narsapore was more gradual, partly caused by the disturbed hinterland in which the raw materials for ship building were derived and partly by the rise of European controlled ports where dockyards and repair facilities were established. Masulipatna, situated on latitude 160 9 N, longitude 810 10 E, was the port with the great publicity on the Coromandel coast in the seventeenth country, largely because of its high visibility to those who have left behind contemporary records, though Orme refers to a tradition that this town was founded by a colony of Arabs in the 14th century.  [8]  Fernandez Naverett who visited Masulipatam in 1670, describes it as a populous place of great trade, and John Fryer estimates the population of Masulipatam at the close of the 17th century at two lakhs.  [9]  Besides natives it was also attracted a large numbers of foreign traders from different parts of the world. The city developed separate localities of different ethnic groups such as the French Peta, the English Palem and Holland Palem. By the end of the 17th century the port and city of Masulipatam had developed considerably on account of their flourishing textile industries and growing inland maritime trade.  [10]  The port had links with the ocean trade of Gujrat and the Persian Gulf and also with the South-East Asian countries. A large number of merchants who came from different parts of Golconda were a great market for the goods imported through Masulipatam. In the constant battle between man and nature and the role of man to master nature always leads to suppresses and in the case of instance of Masulipatam we see that the destruction that took place in the aftermath of the great cyclone would however be rectified by human effort. Many ports and declined or were totally neglected. However, the enterprise of the British and the resettlement of the traders saw the revival of Masulipatam. The port city of Masulipatam continued to grow and expand till it witnessed a devasting cyclone on 13 October 1779, which destroyed and damaged a great part of the citys houses, bridges and other buildings, besides the Dutch and English settlements. In addition to the loss of human life on the shore, several ships and boats sank during this cyclone. It was estimated that in Masulipatam and in the villages in its hinterland about 20, 000 people perished. However, soon afterwards, the wealthy merchants as well as the European factors reconstructed their establishments, and the inland and overseas trade of the port city revived.  [11]   About twelve miles to the south of Masulipatnam is Point Devy, and further to the south the Krishna flows into the ocean in many branches forming a promontory, crisscrossed by streams, rivulets and flood channels. Because this promontory was cut off from the mainland for most of the year by these rivulets, it was known to contemporaries as Devy Island. It was not a suitable place for a harbour or any form of outlet of trade, but it was extremely fertile on account of the alluvial deposits of the Krishna. The land there was well cultivated as well densely wooded, abounding in wild buffaloes and game. These features made it a great attraction to the larger European Companies facing provisioning problems. The Dutch first saw the potential of this place and made several attempts to get a grant of the island, first from the ruler of Golconda and then from the Mughals. They were more than once at the point of success but the cession was not confirmed because of the lucrative revenues the l and produced to local lessees. The Dutch had grand plants to shift their trade from Masulipatnam to Devy, where they were going to construct port facilities, deepen the channel to take vessels of some size and attempt to develop inland navigation to the weaving villages. The place had the advantage of being defensible from attacks from the mainland, and would have made them independent of the hinterland power. With the decline of the port of Masulipatnam the English also had the same idea, and when Sir William Norris went on his embassy to the Mughal court in 1699 one of his requests was for a cession of Devy to the English. The concession was not given and the English sought to achieve it later in the eighteenth century, always without success. If Devy had been conceded, either to the Dutch, or to the English, there is no doubt that an effective port of outlet could have been established there, a feature that would have been consistent with the dynamics of growth and development of ports and commercial centres in Coromandel. South of Devy Point is the port and town of Petapuli, lying on the estuary of a river. It was quite a substantial place of trade and traffic, situated close to a cluster of weaving villages. From the end of the seventeenth century the port was called Nizampatnam, a name it has retained since. The port was by all accounts good by contemporary standards, the river providing entry for vessels of up to 100 tons. Streynsham Master, when he visited this area in 1766, observed several vessels of 50 to 100 tons in the river. It was a port with a considerable country trade, besides providing goods for export for the oceanic trade. It was the home of a number of wealthy Telugu Hindu merchants). South of Nizampatnam, for some considerable distance, there are no major ports. There are some minor ports such as Motupally, Cottapatnam and Ramapatnam, which were shipping piece goods in small vessels to the larger ports of the north and the south. There is a suggestion that Cottapatnam, lying on the estuary of a river, was at one time a port of some importance. There was a tradition there, that after a quarrel between balijas and komatties in an adjoining port, the komatties migrated in a body to Cottapatnam and established their trade there. Likewise an early seventieth century European account talks of Motupally as formerly a famous mart and seat of extensive trade. So there seems to have been some shifting around of trade outlets in this area. The mouth of the Gundlakamma river, lying at latitude 150 27 N, is generally held to mark the northern boundary of the Coromandel Coast proper  [12]  . On the border between the district of Ongole and Nellore, at the mouth of the Menneru, on its right bank, is a port referred to in contemporary records as Karedu. This port appears to have been of some importance in the seventieth century, being linked directly by road to the capital city of Golconda. The bar of the river was always open to let in vessels of medium size. Customs duties were considerably lower here than in Masulipatnam, and merchants were importing and exporting goods here in some quantity. It must have been a port of some importance at one time and it is possible that it was one of the ancient ports of trade in Andhra. In Masters time it had already declined to it significance. South of Cottapatnam up to Palecacat, the only ports of any description are Kistnapatnam and Arumugam, the latter known to contemporary Europeans as Armagaon. This port is located on the eastern coast in the taluk of Gudur of Andhra Pradesh. Once, itwas a flourishing port centre stated by the Chola and Telugu Chola inscriptions. The port was referred to in the inscriptions as Kollitturai alias Kanda GopalaPattinam. Probably it could be named after the Telugu Chola king ViraRajendran dated in 1256-57 A.D. this port was engaged by the foreigners of various countries (pandine} bhumisamashaparadesigal and merchants. It also records that various types of vessels and boats were anchored in this port.They were referred to in the inscriptions as kalam, tonuru, tuli, kalavam, vidavu etc. Kalam is identical with kalam (small boat) mentioned in the Tamil literature and to}Uru probably identical with Tamil Toni. It has two words Toni+ Uru which ultimately became Tonuru. Uru is also a small vesse l used both for inland and coastal navigation for boarding a ship, loading a ship and fishing in the coastal areas in addition to their use in the rivers as ferry boats. It is not clear to give the meaning of tuli, kalavam and vidavu.During Irumadi Tirukkalattudevar (1279 A.D.) time, the merchants of various countries residing in this port donatedone fourth percent on the appraised cost of all he goods exported and imported at this port. During Vijayanagara period the port was renamed as Rajavibhadan Pattinam. About thirty-five miles south of Arumugam was the port of Paleacat on latitude 130 26N, longitude 800 20 E. In common with many other ports of the region it had no natural merit as a port, though contemporaries considered it better than Madras. The coast was shallow and there was a dangerous reef offshore, which larger ships of a later period were instructed to avoid. The main port was on the southern end of an island formed by the sea, and a lagoon or backwater called Paleacat Lake. A river flowed into the sear by the side of it but the bar was not deep enough to admit vessels of more than 50 tons. The island was called Sriharikota and a spit of sand separated it from the mainland. Ships anchored about a mile from the shore and had to be loaded and unloaded in small boats of the masoola type which were beached on the shore. Paleacat was an important port of Indian shipping dating back well before the seventeenth century, featuring prominently in the trade to South East Asia. Its hin terland, Poneritaluq, had several villages engaged in handloom manufacture, and Paleacat was the port of outlet for these goods. When the Dutch secured considerable rights and privileges here, they began to dominate the trade. They erected a fort, Fort Geldria, at the point where the river flowed into the sea, and dredged some of the sandbanks to enable the use of the river and the backwaters for transport in small boats. There were villages all round the port, some of which were ceded to the Dutch. They brought all these villages into the service of the port and developed the complex, by the end of the seventeenth century, into a substantial port town. The shifting of the river estuary, the sandbanks and coastal erosion appear to have made Paleacat less functional as a port in the eighteenth century. Outside the Dutch fort was a section of the port where Indian owned ships plied their trade. But they had to submit themselves to Dutch restrictive controls and appear to have moved ou t of Paleacat to other Coromandel ports. Under the Dutch, Paleacat was drawn in to the Dutch-Asian trading system and established close shipping links with important Dutch centres of trade such as Malacca, Colombo and Batavia. In the eighteenth century, in addition to climatic factors, political and economic events led to the decline of the port. In the nineteenth century Paleacat disappeared as a trading port and was not in use even in the coastal trade  [13]  . About twenty-five miles south of Paleacat is Fort St. George or Madras (originally Chennapatanam, situated on latitude 130 5 N, longitude 800 18 E. Generally recognized as among the worst harbours of the region in terms of physical situation, it has futures that were positively dangerous to shipping. It was not a place to which local shipping had restored before the foundation of the English settlement. Its precise origins are not clear but it appears that a town had been founded there a few years prior to its cession to the English. Whatever the origins, it is clear that the place was no more than a few fishing settlements when the English arrived there. The ruler though this a means to achieve his ambition of developing a commercial centre in his dominions. This proved eminently successful, though not in the way conceived by the ruler. Madras grew as yet another port along the coast with an open roadstead. In the beginning it was primarily used by English shipping. It later attract ed indigenous Indian shipping, though Madras in our period never became the home of a large Indian merchant fleet. Four miles south of Fort St. George is the port of San Thome, built by the Portuguese as a fort and town near the older Tamil port of Mylapore. Mylapore occurs as a port of significance in the trade to South East Asia, long before the Portuguese came to San Thome. After they settled there and built the fort, the better to control the trade and derive some tribute from it. Mylapore and San Thome seem to have functioned as an extended port, inland market and manufacturing town. Mylapore had settlements of weavers producing for an export market. The port was an open roadstead, much the same as Madras, though the rivulet of Adayar and the backwaters may have provided some facility for small boat traffic. The St. Thomas Mount rising just behind the port was visible from out at sea and was a good sounding point of sailors. Despite Portuguese presence, possibly because of it, Indian shipping continued unaffected by the English settlement of Madras. Like Madras, it drew from the Chingleput h interland for its textile exports and imported goods for that market. About seventeen miles to the south of Madras was Kovalam, which appears to have been use as a port of outlet at certain times. It never really grew to any importance, despite efforts by the rulers of the hinterland to achieve this in the eighteenth century. The obvious attractions of revenue from customs due on imports and exports persuaded the regional officers of the nawab of Arcot to foster the growth of this port and to initiate the construction of a town ship called Sadat Bandar. There is evidence that shipping was attracted to the port in the first decades of the eighteenth century. The Ostend East India Company was given permission by the nawab to establish a factory there with trading concessions. The company folded up and Kovalam never developed a trade of any consequence  [14]  . South of Kovalam, past Mahabalipuram and the so called Seven Pagodas, was the port of Sadurangapatnam, lying at latitude 120 32 N, longitude 800 10 E. It was an important port of oceanic trade in the seventeenth century, known to the Europeans as Sadraspatnam or Sadras. Though without a river, there was an outstretched headland that provided some protection to ships which could lie close to the coast. The temples Mahabalipuram just seven miles to the north were a good sounding point for ships sailing into this port. The port derived its strength from a well populated hinterland, with numerous weavers villages and with good access to internal markets by road. Indian shippers carried on an import and export trade from here across the Bay of Bengal. Its importance persuaded the Dutch to take the port and neighbouring village in lease in 1705, after which native shipping seemed to have moved elsewhere. The coastline south of Sadraspatnam was in our period a busy area of trade and traffic. It was littered with a number of ports situated within a few miles of each o