Hydrostatic Pressure Vessel

Hydrostatic Pressure Vessel Nomenclature = radial stress = Hoop stress = axial stress Pi = internal pressure Po = external pressure ri = internal radius ro = external radius r = radius at point of interest (usually ri or ro) Delta L = Elongation = Deformation ID = inner dimeter of o-ring Gd = groove diameter Srec = stretch recommended Bd = Bore diameter GW = Groove width CS = cross section diameter C = recommended maximum compression (static)   Summary    A design of a thick vessel is created to measure the effects of hydrostatic pressure when operated in them. The methodology of calculating the stresses on thick walled cylinders is illustrated. A study of the radial and hoop stresses is progressed to find the required sizes of the vessel to operate without a failure under 30 MPa pressure. The bolts are designed to handle the load on the vessel to keep the vessel in one place without moving. The force in the vessel is measured to find the correct bolts that will keep the vessel fixed and safe. A sealing technology study is described to understand how to measure the correct dimension of the o-ring to process the test without air leakage from the entry of vessel. The groove in the vessel was measured to stretch the o-ring designed in a correct manner so the pressure hand move in and out sealed. The calculations in this report are tested mathematically in an academic manner for the design to be brought to life with high efficiency. Introduction In the field of science experimenting, it is necessary to test the efficiency of a specific design, because all products of same function have different specifications and differ in quality. At the same time the true specification of a design can alter its efficiency. Therefore, the best product must be created with real specific measurements that lead to its perfection. It is found that there are three important features of the pressure vessel. Firstly, the shape of the vessel which presents the equations used to study the impact of pressure in them. Secondly, the material used must be chosen correctly to prevent any danger if vessel fails. Finally, the safety is the most important feature in a pressure vessel hence it is important to choose the correct bolts that will keep the vessel fixed at a point. In addition to designing the desired sealing technology of the vessel to keep the air pressure tight in the vessel without any leakage. Companies, industries and labs usually use hydrostatic pressure on a specimen to figure out it properties which allow us to understand the standards of the material. Using hydrostatic pressure is a safe and effective process which helps us to understand more about failure of objects under pressure and the effect of hydrostatic pressure. There are a few different techniques used to measure the failure of a test, for ex ample, when a hydrostatic test is proceeding it is known that if air starts leaking from the vessel, this would be considered as a failed test. Thick walled cylinders nature is that they handle more pressure. Under high pressure, the wall might explode and cause failure thus is it important to dimension right size for the thickness of the cylinder before manufacturing the cylinder for hydrostatic testing. Measuring variables such as, hoop, radial, and axial stresses will be discussed and progressed for the vessel designed in this report. The bolts used are entitled to a high load of pressure which is possible to cause a failure if there was no study taken before using these specific bolts that have this mechanical specification. A study on the strength of the bolt is being used and will be illustrated later in the report. Basically, this report will show a study on how to design the required cylinder and bolts to process a safe hydrostatic test. As the design of the vessel will be illustrated to understand the image of the design and its dimensions. Which will lead to an understanding on how to design a specified thick cylin der to process an internal pressure and a hydraulic press to test a specimen hydrostatically. Aim of the Project The project aim to design a device to measure the effects of hydrostatic pressure on the fracture toughness of the device. It is found that the device required must handle conditions of 30 MPa pressure thus thick walled cylinder is needed. The importunacy of this project is to create a design that meets the required conditions for it to function plus applying correct methods and calculations for it to function. Hydrostatic pressure Hydrostatic pressure test is latest style of testing the ability of fracture toughness of a vessel without causing harm. Hydrostatic test of vessels requires gas or water filled into the vessel if the fracture toughness of vessel is about to crack, the resistance of air reduces the explosion as they resist the inner pressure that causes the failure. Less energy is released when fracture is about to take place LT (2016). Air is a fair medium that is used for a hydrostatic test. Air is less expensive than oil and it has an easier method than water for a test. The sample will not get harmed after the test. When a failure occurs, it means that the vessel does not meet the standard and this failure can be shown when the durability fails and air begins to leak. It is important to assure the leak prevention, reliability, and safety of the pressure test. There are two methods of testing hydrostatic and pneumatic. Air is used as a medium of the hydrostatic test Arshad Mahmud (2012). The hydrostatic test measures the elastic deformation of a metal and its ability to get back to it is formal shape. Air is a safe medium as it is can compressed like water. When a cylinder blows out, air will leak which is safer than using other material due its possibility to be highly explosive. Pressure vessel Pressure Vessel is a tank that is designed to contain gases or liquids at different pressure limits. The pressure or temperature drops can be dangerous; this can cause an explosion which can injure anyone near the vessel. Thus, when designing a pressure vessel legal commands must be taken to create a vessel that is safe to perform its task. History of pressure vessels started in 1495 when Leonardo Da Vinci designed a vessel. The major problems that occurred were mainly explosions because of leakage of compressed gas or liquid, and if a fire was burning near. Engineers created safety factors as measurements of safety of pressure vessels LT (2016). Pressure vessels are used in many applications, for example, in compressed air receivers, hot water storage tank, compression chambers, mining operations and nuclear reactor vessels. A cylinder is the usual shape that is used for hydrostatic testing. It has good maintenance because it is checked every five years for public safety. When the device gets cold when in storage, fatigue might occur hence the importance of the maintenances. However, hard steel responds to it properties to handle in high pressures. Steel also provides controlled and safe environment to prevent any explosion that is possible to harm people. Shape of the vessel Cylinders have an ideal shape because it is easy to analyze when in operation and are easily made. This makes cylindrical vessels the cheapest in cost and most effective. Even though the cylinder is the ideal shape for the vessel, it comes with a few disadvantages, for example, the bigger the diameter, the more expensive the construction of the cylinder would be. The ideal size for a cylindrical vessel is 8cm, this is to avoid inspections and testing issues RR (2012). In this case, the maximum internal pressure chosen is 30MPa which allow us to design a thick-walled cylinder. Equation, and variables of thick walled cylinder will be illustrated in this report, based on them a design of a vessel will be created for hydrostatic testing. Thick Walled Cylinders There are a lot of examples for thick cylinder such as, guns, hydrostatic testing device, and high pressure hydraulic pipes. Thick cylinders are entitled to internal and external pressure. The wall thickness is large and the stress across the thickness is notable. Stresses in this case are solved by using specific boundary conditions, compatibility, and equilibrium. The problem of thick walled cylinders is that they are entitled to high pressure and temperature which is possible at constant or changing duration. The usual problem is ductile fracture of the material which is because of the geometry or the properties of the material. The real analysis of a thick cylinder is dependent on the radial and hoop stress caused by the internal pressure which stand up to the yield strength of the material. Equilibrium equation is important because we need it to relate stresses to strains and strains to displacement d(sr) / dr + sr sh / r = 0. Compatibility equations; Thick walled cylinders have three main mechanical stresses. To design a thick, cylinder the thickness of the wall should be more than 1/10 of the greatest diameter of the cylinder: 1-Hoop Stress 2-Radial Stress 3-Axial Stress (2017) Thick walled cylinder The boundary conditions of a thick-walled cylinder are: Thin surface is, at and outer surface is, at Thus -pi = A (B / ri^2) and -po = A (B / ro^2) Variables can be seen in figure 1.1, Figure 1.1 shows location of the variables (2017) Thick walled cylinder A and B in the simultaneous equations above when applied to the boundary conditions above, two constant equations for A and B will be concluded; Now, to find the final general equation, Lames equation is included thus the hoop stress and radial stress will be; (2017) Thick walled cylinder the axial stress on the case of the cylinder designed bellow which a closed end is calculated by means of equilibrium which is reduced to as shown above. Maximum shear stress follow that stresses on the cylinder at any point on the wall are principal stresses. Thus, the maximum shear stress at any point will be given by the equation of Tresca theory, Giuseppe Catalanotti (2017) Material of the vessel Pressure vessel are mainly made from steel. Rolling or forging is used to make out the shape out of the vessel. Current standards use steel to impact resistance which increases the mechanical strength. Steel is the most important material for engineering and construction in the world. Steel has a great resistance to corrosion because of its formability and durability, high tensile and yield strength and is very effective for thermal conductivity. Stiffness, ductility and yield strength are measured using tensile stress test. Impact test used to figure out the toughness and hardness of surface resistance Total Material (2016). -Yield strength of steel is 260MPa -Young modulus is between 210 GPa (Stiffness better three times than aluminum) -density of 7.7/8.1(kg/dm3) -Poissons ratio 0.30 -Thermal conductivity 11.2/48.3(W/mK) -Thermal expansion 9/27(10-6/K) Total Material (2016). Safe tank to perform a hydrostatic test must remain sealed. Lip seal technology is used in this system. O-ring were created to prevent any leakage when hydraulic hand is inserted into the chamber. A hydrostatic test should meet these requirements of the vessel to remain testing of pressure safe. Calculations Results: First, the maximum pressure that will cause yield at the internal surface of the vessel will be calculated, using the hoop and radial stresses to find the maximum shear strength and the yield strength. The equations will be used are explained in thick-walled cylinder section which are the hoop and radial stresses. In addition to the maximum shear strength equation and yield equation which will be mentioned in the following; Giuseppe Catalanotti (2017) Secondly, the elongation equation will be used to determine the size of the deformation; Delta(L) = deformation(z) * L (L) is the height of the internal cut which has a height of 0.210m Deformation(z) v = passions ratio E = the young modulus k is the ratio of external diameter on the internal diameter ro/ri First the hoop and radial stresses must be calculated hence the hoop stress equation is pi = 30MParo = 0.210m k = 2.625ri = 0.08m hoop stress is = 145.67MPausing hoop stress equation above. pi = 30MParo = 0.210m k = 2.625ri = 0.08mk = ro / ri The radial stress is = -(108.75 MPa)but r = -piusing radial stress equation above. The yield equation is pi = 30*10^6 k = 2.625using the yield equation above. = 70.18 MPa Since the yield strength of the steel is 260Mpa and it is greater than the yield at 70.18MPa pressure then the measurements of the vessel appear to be able to handle an extra 190MPa on the system before it begins to fail. The maximum shear strength Tresca is      = Since hoop and radial stresses are found, maximum shear stress can be calculated. = 145.67MPa = 108.75MPa= 70.18MPa Giuseppe Catalanotti (2017) Now finding the Elongation which has the equation Delta(L) =* L = (1 2v) * pi / E (k^2 1) = (1 2 * 0.3) * 30*10^6 / 210*10^9 * (2.625^2 1) = 9.7*10^-6 v = passions ratio of steel pi = internal pressure E = the young modulus of steel k is the ratio of external diameter on the internal diameter ro/ri Deformation= 9.7 *10^-6m Since, Delta(L) = defamation(z) * L Then, L = Length of the cylinder which is = 0.21m. See figure (3). Elongation is 9.7 * ^-6 * 0.21 = 2.037 *10^-6m from Elongation equation above Giuseppe Catalanotti (2017) Bill of Materials (6) (4) (1) (3) (5) (2) Item Number Description quantity Material (1) Vessel 1 Steel (2) O-Ring 1 Rubber (3) M14 Bolts 6 Steel (4) M12 Bolts 4 Steel (5) Pressure hand 1 Steel (6) Holding Stick 1 Steel The Design and assembly procedure A hydrostatic pressure device was designed to measure the pressure. This tank is to be attached to the hydraulic machine. Measurement of the machine were taken to design the vessel. The purpose of this device in figure (1) is to ensure that pressure tests are maintained safely and properly. This design is measured to handle pressure between 0MPa to 70MPa. The test will be progressed at 30 MPa. The material used is steel. The design contains six different main parts as shown in figure (1). This section will provide dimension and function of each part. Figure (1) Vessel Components (Exploded View) The size and the thickness are very important factors when designing a safe vessel. Figure (2) shows the circular diameter of the head of the vessel which is 21cm and that it was extruded to 34cm. Figure (2) is also a cross sectional view of the final shape of the vessel.The thichness of the wall surrounding the chamber is 6.5cm and the bottom has a thickness of 7cm. Figure (3) shows the dimsion of the chamber which is a cylinder of 8cm diameter and length of 21cm. This area is where it is expected to place the specimen. The specimen size is measured to be 20*50*4mm Figure (2) Dimension (1)Figure (3)Chamber dimensions The mechanism that will hold the vessel is smart. Figure (4) shows a diameter of a cut of 5.1 cm and 6.5 high. This area is meant to be placed into the bottom holding hand of the hydraulic machine in the Ashby building. Where the vessel has an extrusion of 27cm and height of 5cm and was created as a base of vessel as shown in figure (5). Figure (4) Bottom hand holder Figure (5) shows the base diameter and height Figure (6) shows that the base cylinder has 6 holes of M14 size. These holes were created to be tighten up with bolts of M14 shown in figure (7) on the table of the hydraulic machine. Six bolts are created and can be seen in figure (6). Figure-(6) M14 holes x6 Specification of the Bolts (F = P x A),which means that the force is equal to the pressure multiplied by the area. Figure (3) shows the internal diameter of the vessel which is 0.08m. (a = pi x (d)^2 / 4) is used to calculate the area of a cylinder, which means that (pi x (0.08m)^2 / 4) = (50.03*10^-3 m^2). The maximum pressure will be tested is 30 MPa. Since pressure is 30MPa and area is (5.03*10^-3 mm^2). then as they multiplied to bring a force of 150 kN. This means that thetotal force in the cylinder is equal to 150 kN. The question here is that will the bolts in figure (7) and (8) M14, M12 handle 150 kN of force. The research on the metric bolts shows the ability of each size of the bolts. It was shown that M14 bolt has a load proof of 66.7 kN. Figure (6) shows that there are 6 bolts of M14 is used. Now, the total force applied is divided by the number of the bolts to show the required ability of the bolts. (150 kN / 6 = 25 kN) which means that the system requires six bolts that each of them can handle 25 kN of force Metric Bolts (2016). Above it is mentioned that the load proof of each of the M14 bolts is 66.7 kN which means that a total of six M14 bolts will provide an ability of 400 kN, 400 kN of force can handle 150 kN of applied force. In brief, the bolts used in the system in figure (11) meet the requirement of the study which is 30 MPa. To ensure the safety of fixing the vessel to the machine, four M12 bolts were added. M12 bolt figure (8) has a load proof of 48.9 kN, Total load proof of four bolts is equal to 195.6 kN which has a good impact on keeping the vessel safe from any danger of being rapidly moved away from it fixed point. Eventually, the total ability of the bolts is equal to 595.6 kN which are designed to prevent the vessel from any possible danger of a maximum pressure load of 150 kNMetric Bolts (2016). Figure (7) M14 Bolt x6 Figure (1) shows 4 holes created on top of the vessel. They are M12 holes created to increase stability of the vessel and more safety in case of the vessel left it place. Bolts of M12 were created to have a length of 39cm as shown figure (8). Calculations above are measurements of parts in figure (1) . Ten bolts, 4 of M12 and 6 of M14 are attached to the base of hydraulic machine. Finally, a hydrostatic test can be done safely.   Figure (8) Long M12 bolts x4 Sealing Technology O-ring is a mechanical gasket in a shape of loop with a diameter that is made of rubber. It is designed to be fitted at circler cut which means that an o-ring will be compressed during work. It is expected to seal a joint of two parts. One mechanical benefit of the o-rings is to seal a moving hand through a vessel without an air leakage. Thus, a specific design of an o-ring will be designed to be fitted at the entry gate of the vessel for the hand to enter the vessel without air leaking (efunda) 2017. Figure (5) shows the place of the o-ring. The thickness of the o-ring is calculated to be 0.84 mm and the inner diameter of the o-ring is measured to be 79.46 mm. The o-ring designed can be seen in figure (10). Figure (9) shows the grave and the dimension of the O-ring. An o-ring is meant to be attached in this system. The groove was measured to be 4 cm away from the top of the vessel in the chamber section. The groove diameter was calculated to be 8.1 cm and the width of the groove is 1.15 mm. As hydraulic hand enters the chamber, it will pass through three rubber bands that reduces the area of the chamber making it tighter for the hand to be inserted without any leakage outside the system PS (2016). The design of the grave and the o-ring must be studied before they are designed. To design a sealing technology there are a few variables to know to create it. These variables are the bore dimeter of the outside radius, the groove diameter of the inside radius and the groove width of the axial length. The maximum stretch of the 0-ring should not be more than 5% of the grove size (efunda) 2017. Calculations of the O-ring and Results ID is the inner diameterof the o-ring and can be found if Srec the recommended stretchischosen and the groove diameter Gd the groove diameter can also be found when this equation is used; Srec = 2% ID = Gd * (1 Srec) then, ID = Gd * (0.98). The stretch of the o-ring is to make the o-ringstay at the groove tightly without falling out (efunda). ID = (39.94 * 2) 0.42 = 79.46 mm ID = 79.46mm Gd = ID / 0.98 Gd = 79.46 / 0.98 = 81mm Gd = 81mm Cross sectional Diameter (CS) of the o-ring: O-ring will be compressed in radial direction when it is attached to the groove. As the cross section of the ring is compressed between groove and bore diameter then the cross-sectional diameter must be more the depth of the groove. Which means that CS > Gd ID / 2 (efunda) 2017. CS = Gd ID / 2 = 81mm- 79.46mm / 2 = 0.77mm As CS must be > than 0.77mm then CS = 1mm C is the recommended maximum compression is 40% and must be for the ring to be compressed. The recommendation of C depended on the seal kind. Static seals do not require an axial movement in the bore(efunda) 2017. Groove Width in the Vessel (GW) = When the ring is compressed horizontally it will expand vertically. The material of the ring will be helpful to be compressed effectively. However, the groove width should be about 1.5 by the cross sectional of the o-ring diameter and this to stretch the ring vertically (efunda) 2017. GW = CS * (1.5) = 1mm * 1.5mm = 1.5mm. Figure (9) Section Cut shows the position and size of the Groove width and diameter Figure (10) O-ring CS dimeter and radius (r) Figure (11) Final Product (Thick walled Vessel) Discussion Thick Walled cylinders handle high pressures with least effects on the vessel and remain safe for future use. The deformation possible in the vessel is calculated to find the amount of elongation (the change in formation or length in an object). The elongation value is 0.002mm which is proper. The maximum pressure in the vessel is 30MPa hence finding the hoop and radial stresses to find the shear stress of the vessel and compare it with the yield strength of the vessels material and it dimensions. Therefore, the stresses applied at different sections in the chamber are calculated above and hoop stress is found to be 145.67MPa and radial stress is 108.7MPa. The maximum shear stressin the vessel is calculated from the hoop and radialstresses and it is found to be 70.18 MPa. Based on Total Material (2016) the yield strength of steel is 260 MPa. Giuseppe Catalanotti (2017) have stated that if yield strength of material is bigger than the shear stress calculated in the vessel then the vessel is safe when pressure applied. The Bolts are designed to handle keep the vessel fixed on the ground of the hydraulic machine. The total force initiated in the vessel is calculated and found to be 150kN thus the required bolts are must have a higher force than 150kN. The six M14 bolts used can handle force of 400kN and this enough for the vessel to function safely. Finally, the sealing technology, the o- ­ring is designed to keep the vessel sealed when it is preforming. (efunda) 2017 stated that the maximum recommended stretch of an o- ­ring is 5% and the designed o- ­ring has a stretch of 2%. The groove width is 8.1cm, cal culated using 2% max. stretch and an inner diameter of 7.94cm. The CS diameter o- ­ring is 1mm, which must be higher than the calculatedCS diameter which is 0.77mm. Hence, the

Better Living Through Chemicals :: Environmental Pollution Essays

Better Living Through Chemicals Few things are more important than the air we breathe. From a factual and biological standpoint, there is nothing more important. Before I begin this inquiry, I must disclose that I am not an environmentalist. This is not something I am proud of by any stretch of the imagination. I admire those people who climb old growth trees and reside in the branches for days on end. They do this to save these wonders of nature from developers and road crews. I acknowledge that some of my decisions may appear to be similar to those of an environmentalist but actually, my decisions have often been based on financial concerns. For example, my husband and I have shared one car for the last nine years. I used to let people infer that it was because we did not want to pollute and use up valuable resources. More than anything, I was simply impressed with myself that I could arrange a schedule that worked for two working people. We were working and going to school while relying on one car. O f course, occasionally we relied on public transportation. It wasn’t easy; I used to have to arrive at school at 6:30 am on Fridays for a class that started at 4:00 pm. I made the best of it by using that time to study. A couple of weeks ago we bought a second car. Looking back, I do not know how we managed with just one car for so long. It is easy to forget, and even easier to get used to immediate convenience. There are costs and pay offs in life, always I have been thinking a lot lately about human nature, our environment, what we accept and what we choose to believe. I say ‘choose’ because, if we listen to many scientists, they tell us we are changing our environment, and not for the better. Global warming and greenhouse gasses are a debatable topic. Does this dire situation exist or does it not? Are the icecaps melting, or are they not? It depends on who you talk to. I find this aspect very interesting. According to the Bush administration, we need more study on the issue. I suggest we read and respond to the studies already conducted.

Plantation Society and Creolization Essay

The ‘self-image is the key to human personality and human behaviour. Change the self image and you change the personality and the behaviour. (Maxwell Maltz) Sociology is a systematic way of studying the social world. It seeks to discover the causes and effects of intercommunication and interaction that in social relation. While the functionalist provided a static view of society. Functionalism views society like a biological organism. The parts or institutions of the organism or society function appropriately to ensure the whole structure works efficiently and effectively. They believe that the whole has greater power than the individual parts. The three main aims and objectives of functionalism are to maintain order, stability and equilibrium in society. (Functionalist and Marxist Perspective) Max Weber (1864-1920), a German sociologist and a contemporary of Durkheim’s, also became a professor in the new academic discipline of sociology. Weber also believed in social actions as an action responsible by the individual. He believed that the individual need to take account for his own actions to be considered social. Weber defined social action as an action that an individual takes and attaches meaning and is conscious of the action. The individual must also take into consideration how others react to their actions. If the individual is not conscious of their action then it cannot be termed as social action and if they do not pay attention to the reaction of others for their action then it’s not social. On the stand point of the socialist, they need to find out the meaning of the action of the individual. From this, Weber took on the realization of social actions into social interactions – the interaction of individuals. He did not take into account religion, family, work or school. Marx, on the other hand believed that social actions leaned heavily on economic structures, but Weber did not agree because he believed they influenced the response of the action. Weber also had his views on religion as an influence on social action. He believed that religion stemmed what is called the spirit of capitalism or protestant ethic. Religion once believed that since they were the only true religion that they had no worries and will always be saved. Protestants came in with the idea opposite to this belief and then changed people’s perception of being saved. They then believed that financial success is a blessing from God and so began living frugal lives, investing money to make more money. Hence this brought about the view of capitalism. On the other hand, Weber however had a different view on social actions as to functionalism. Functionalism believed that society is a whole unit made up of interrelated parts that work together. Functionalism believed that for a society to work in harmony they must work together as a whole. Durkheim believes that society is composed of many parts, each with its own function. When all the parts of society fill in their function, it’s a normal state. If they do not then it’s abnormal or pathological. This major difference of these perspectives of society is their level of analysis which is micro-sociological and macro-sociological. Micro-sociological examines small scale patterns of social interaction which is the view of interactionism, whereas macro sociological examines large scale patterns of society which is the view of functionalism. The micro-sociological aspect of society, like Weber, believes in the individuals and what influences or causes their actions and the reactions of others based on the actions. The macro-sociological aspect, like Marx, believes in the larger picture of society as a whole with each part working together to achieve a function. Both functionalism and social interactionism has their varied views of gangs in society. Functionalism does not support gangs because it makes society unstable. Functionalism believes in society as a whole which makes it stable. Functionalism looks at gangs and how they contribute to or detract from society. Gangs contribute to society since they classify people into different identifiable groups, provide an example of defiance, and inspire the development of institutions of social control and total institutions. They detract from society in that they separate individuals from the main stream of society and there is a lack of social integration. Socialists like Weber, would look deeper into the reason behind gangs. Gangs, although part of society, but not considered a part of society since it has no function which shapes a stable society. Gangs are made up of small groups of people as little and three individuals. According to The Oxford Study Dictionary, â€Å"A gang is a number of workmen working together or a band of people going about together or working together, especially for some criminal purpose. † They form a gang for a reason and act upon it. Their action is as a result of their beliefs and they are accountable for their actions. It becomes a social action as the reaction of gangs form a negative part of society as determined by many. The social action, as Weber describes, gives a better understanding of gangs, since functionalism looks at gangs as a negative part of society. Social interactionism views gangs as a means to society achieving a goal, whether negative or positive. They look deeper into the individuals who make up the gang and the purpose of the gang. People in our poor urban Caribbean centers will be encouraged to join gangs because they are unable to achieve socially accepted goals through legitimate means. Gangs could be seen as innovators or achieving social goals through an illegitimate process. Individuals in the Caribbean join gangs for a variety of reasons, example for identity recognition that is achieving a level of status that cannot be achieved within the society; for protection because gang members protect their members; fellowship or brotherhood since gangs serves as an extension of the family where the members are called their brother; intimidation and peer pressure as being forced to join a gang to prove a point; the fact that gangs causes the individual to feel important especially if this is lacking at home; where they actually join a gang to perform criminal acts since they are assured protection and profits of the group. Because of the vast reasons for joining a gang, it is to be considered mainly by the socialism since they look into the reasons or underlying meaning behind the action of the individual. In the Caribbean people join gangs for many reasons and since Weber look at the action behind the individual for their action I think he best explain a better understanding of why people in the Caribbean join gangs. According to The Jamaican Gleaner people join gangs for a sense of purpose, belonging and value, hence the individual reasoning behind it all. We all face the ills of society yet only a few join gangs yet the majority does not. We are all a byproduct of our environment; however we do have an individual choice of conformity. So, what makes a few join and the majorities abstain. It boils down to the individual’s reaction to the situation that propels them to join a gang. Weber’s social action theory of one’s own individual conscious choice of joining a group is the driving force here. True, society does affect one’s actions to act in a certain way but if this provides a better understanding of why people in the Caribbean join a gang why not the majority join a gang? Why only a few join gangs in the Caribbean? I believe that it is the individual own personal conscious decision to join a gang provides a better understanding. Weber looks deeper into why the individual join a gang. If it is the society then according to Durkheim our society should be in a pathological state since the majority does not join a gang. The problem in the family is the one major driving force behind young people joining gangs. They do so for a sense of belonging according to the Jamaican Gleaner. The individual own conscious decision come to play here as to why they join a gang. They do so in an effort to fill in the void. The gang provides them with a new family and brotherhood. Peers pressure people to conform to a certain way of life and a gang is no different. One’s peers are part of the people whom they associate with because they are at school or workplace and so forth. Peers tend to have a great influence on the individual decision they are face with on a daily basis, so they have to make that choice of succumbing to the pressure or overpowering it. They must each make that conscious choice in accord with Weber theory of social action. As mentioned in the introduction, Greg is an example of why people join a gang for protection. Greg was well on his way of making a conscious decision to join a gang; again leading to the point that people make an individual reason for joining gangs in the Caribbean. In conclusion, It is my belief that both the functionalist who believes that society should work as a whole, one unit and the sociologists who states that its all about the action of the individual both contribute to the way people behaviour and the impact each theory has on society.

Free Essays on Physhology

Psychology is the very important perspective for human nature. It is very much important for the individual environment. â€Å"Psychology is very much a product of the Western tradition. Whereas a new psychology of the year 2000 contains both the eastern as well as the Western tradition†(Frey,04/06). Psychologists call a person’s self concepts it includes what a person perceives from the person’s self-concept attitudes. It’s related to Psyche means the integrate part of human mind motion connected to those with bodily concepts. â€Å"It however reflects true relationship with the mind-body concept. ATTITUDES AND SOCIAL COGNITION addresses those domains of social behavior in which cognition plays a major role, including the interface of cognition with overt behavior, affect, and motivation.†(Primis,119). Major perspectives in psychology at this point includes psychoanalysis, humanism and sociobiology. Now, what’s the concept of psychoanalysis is also a very important perspective. â€Å"As a therapy, psychoanalysis is based on observation that individuals are often unaware of many of the factors that determine their emotions and behavior.†(Frey,04/06). â€Å"It is, in addition, a method for learning about the mind, and also a theory, a way of understanding the processes of normal everyday mental functioning and the stages of normal development from infancy to old age.†(psychology.com). â€Å"Furthermore, since psychoanalysis seeks to explain how the human mind works, it contributes insight into whatever the human mind produces.†(apa.org) Sigmund Freud was the first psychoanalyst.†Many of his insights into the human mind, which seemed so revolutionary at the turn of the century, are now widely accepted by most schools of psychological thought. Although others before and during his time had begun to recognize the role of unconscious mental activity, †Freud was the preeminent pioneer in understanding its importance. Although his i... Free Essays on Physhology Free Essays on Physhology Psychology is the very important perspective for human nature. It is very much important for the individual environment. â€Å"Psychology is very much a product of the Western tradition. Whereas a new psychology of the year 2000 contains both the eastern as well as the Western tradition†(Frey,04/06). Psychologists call a person’s self concepts it includes what a person perceives from the person’s self-concept attitudes. It’s related to Psyche means the integrate part of human mind motion connected to those with bodily concepts. â€Å"It however reflects true relationship with the mind-body concept. ATTITUDES AND SOCIAL COGNITION addresses those domains of social behavior in which cognition plays a major role, including the interface of cognition with overt behavior, affect, and motivation.†(Primis,119). Major perspectives in psychology at this point includes psychoanalysis, humanism and sociobiology. Now, what’s the concept of psychoanalysis is also a very important perspective. â€Å"As a therapy, psychoanalysis is based on observation that individuals are often unaware of many of the factors that determine their emotions and behavior.†(Frey,04/06). â€Å"It is, in addition, a method for learning about the mind, and also a theory, a way of understanding the processes of normal everyday mental functioning and the stages of normal development from infancy to old age.†(psychology.com). â€Å"Furthermore, since psychoanalysis seeks to explain how the human mind works, it contributes insight into whatever the human mind produces.†(apa.org) Sigmund Freud was the first psychoanalyst.†Many of his insights into the human mind, which seemed so revolutionary at the turn of the century, are now widely accepted by most schools of psychological thought. Although others before and during his time had begun to recognize the role of unconscious mental activity, †Freud was the preeminent pioneer in understanding its importance. Although his i...

Journal Week 1 Essays - English-language Films, Free Essays

Journal Week 1 Essays - English-language Films, Free Essays I can relate to Eddie. When I was in my previous college I didnt know what I was doing for a while. I was trying to figure out what was going on in the class room when we were learning a new technique learning a new formula in math. I had just changed my medications and I didnt know what was going on. Everything was difficult for me at that point. I wanted to give up. When it came to not being successful at not getting the formula I wasnt fully understanding what was going on. I didnt know if I wasnt doing one of the steps right. I couldnt figure out if I was not fully grasping the concept of the formula. When it came down to it I was having so much difficulty. When I am looking back at the situation I see that I could have taken a step back from the formula and really tried to break it down and asked for helped to see if that would have reduced my frustration. I know that when I did ask someone for help I had a better success with the formula and that was a good thing. It became all about how I decided to use my mind and not allow myself to break down or shut off when I felt defeated would have reduced my frustration and would have majorly increased my chances of success. When it came to this experience I have learned so many things. I have learned that I cannot always do things on my own and its ok to ask for help. I have also learned that when it comes to things that I dont always fully grasp that when I take a step back or look at the problem from a different point of view I will get a better picture of what the teacher was asking for and will be able to do the problem.

Anthropological perspectives on Peace and Conflict Studies Research Paper

Anthropological perspectives on Peace and Conflict Studies - Research Paper Example It explores how people of diverse appearance, different cultures and mutually incomprehensible languages live together peacefully. This paper will give an analysis of the possible causes of the Israeli/Palestinian conflict as well as solutions for the conflict from anthropological point of view. Introduction The conflict between Palestinians and Israelis is a struggle that has been going on since the mid of the 20th century. Within both Palestinian and Israeli societies, this conflict has generated a wide range of opinions and views. This underscores the deep divisions existing between Palestinians and Israelis and also within either society. This conflict has caused a high level of violence for almost the whole duration. Paramilitary groups, regular armies, terror cells and individuals have been conducting fights. Besides the military, casualties have also come from civilian population with a lot of fatalities on both sides. It has been noted that prominent global actors have engage d themselves in the conflict (Gelvin 15). Anthropology gives a scientific basis for handling crucial dilemma in today’s world. It explores how people of diverse appearance, different cultures and mutually incomprehensible languages live together peacefully. Anthropology calls for no naturalization of all human constructions and recognition of culture’s arbitrariness including arbitrariness of power (Lewellen 17). This paper will give an analysis of the possible causes of the Israeli/Palestinian conflict as well as solutions for the conflict from anthropological point of view. Causes of Israeli-Palestinian Conflict It has often been said that the conflict between Palestinians and Israelis is about land. This claim is designed to counter the usual misconception suggesting that the Israelis and Palestinians have a historical clash that dates back to hundreds of years as a result of inherent cultural and religious contempt for each other. The lands claims play a vital role in both sides of animosities, but it fails to give the full story (Harms 60). The more complex and more accurate explanation for this conflict is that it is about the emerging relationship between two groups of people living in the same area, particularly regarding the emergence of firstly, Jewish nationalism (Zionism) and secondly, Palestinian nationalism, which occurred between the late 19th century and early 20th century. The definitions and development of both nationalisms are the basis of the conflict. The emergence of Zionism was not in reaction to Muslims, Palestinians or Arabs, but in response to perceived and real anti-Semitism in Europe and Russia. Although the decision to make Israel a Zionist state location was founded on religious factors, this was largely untrue regarding the decision to establish a Zionist state. When Zionists came to Israel, they did not intend to evict the native population although they were oblivious to it to a great extent. The Zionist movement encouraged immigration to Israel using the slogan, "A land without a people for a people without a land." On reaching Israel, they sought land and believed this maxim, and in this way, they had already sowed the seed of the conflict. Mostly, Zionist settlers showed no animosity against the indigenous population. They never removed Palestinians from their land using force, but they had a simple economic strategy of purchasing land from Arab tribes that represented the indigenous Palestinian inhabitants. This resulted into the Palestinians identifying

Starbucks External and Internal Environment Essay

Starbucks External and Internal Environment - Essay Example Business of Starbucks is complemented by three operating segments such as International division, United States division and Global Consumer Products division. The study has selected UK in order to analyze critical success factor and resource capability of Starbucks. Impact of external environment on business policy of Starbucks will be measured by using PESTLE and Porter’s Five Force analysis. SWOT, value chain analysis and VRIO framework will be used to understand internal strength of Starbucks. Critical success factor (CSF) analysis will be important part of the study. Starbucks Corporation was established by Jerry Baldwin, Gordon Bowker and Zev Siegl in the year 1971. In the initial years Starbucks operated business with single store located in Pike Place Market of Seattle. The company is headquartered at Seattle, Washington, U.S. Distribution network of the company is complemented by 6700 owned stores and 4080 licensed stores in USA. Starbucks has established their presence in more than sixty countries with the help of 20,000 stores. The company offers hot drinks, food items, various coffee drinks and other retail merchandise. As of 2011, market capitalization of the company is US$37.84 billion while sales revenue was more than US$ 13 billion. The company is facing competitions from various big players such as Dunkin' Brands, Nestle, McDonalds, and Wendy's International, Inc. Strategic Group map for Coffee industry can be explained in the following manner: (Source: Brown, 2011) Task A (1) Analysis of Starbucks External Environment Macro Environme nt Analysis PESTLE will be used to analyze macro environment condition of UK. Political UK is one of the most influential countries in the world and plays crucial role on deciding business policy in North Atlantic Treaty Organization. Government in the country has taken stern steps such as 24% budget cut for department of media, sports and culture in order to reduce overall financial deficit in the country. Government in the country has planned to reduce corporate tax by 22% within next two years and raise income tax bar ?8,200 to ?9,205. Economic Economic recession has contracted GDP growth by 0.2% while industry growth rate of the country has slumped to 0.8% last year. Economists forecasted unemployment of UK will touch 8.4% by the end of 2012 and more than 2.5 million people will get unemployed within next one year Social Budget deficit of Government has created challenge for people of the country to maintain standard living style while "managed migration" police government has f urther deteriorated the situation. Working age population in the country is growing at a rate of 7.7% for last two years. Technology Retailers are using latest technologies such as RFID, ERP and