Gordale beck Essay Example for Free

Gordale beck Essay In general, there is quite a variety in terms of detected total hardness levels for the different areas of Malham. Notably, from Table 1, it can be seen that the area with the highest total hardness is the Rwer air at Gargrare (with 280 ppm) followed by the Gordale spring (with 230 ppm). In relation to this, the lowest readings were from the Malham cove (180 ppm). Incidentally, upon inspection of the Malham area map in figure 2, these three areas were of the closest in proximity with each other. In terms of calcium hardness, the location that registered the highest reading was the Malham tarn outflow (with 210 ppm) while the lowest was from the Gordale beck (with 110 ppm). The resulting total hardness levels indicate that the waters surrounding Malham range from slightly hard (140 to 210 ppm) to moderately hard (210 to 320 ppm). It is evident that an area having high total hardness is not enough reason to assume that it also has high calcium hardness. This is due to the fact that total hardness is determined by the presence of magnesium and calcium and not calcium alone. In fact, the greater the difference between total hardness and calcium hardness, the greater is the resulting value of magnesium hardness. This is a rather simplistic way of determining the magnesium hardness, but it is efficient since methods for separately analyzing magnesium from calcium are not easily done. Table 3 shows the computed magnesium hardness values, which also brings a possible point of error in getting the readings pertaining to the Malham Tarn outflow. There was definitely an error since it is quite impossible for the calcium hardness to surpass the total hardness. To better understand the main factor affecting hardness, a topographic analysis of a certain location must be done, which in the process, determine what types of rocks are present. In various areas of Malham, there is a difference in amount and occurrence of limestone (Gorman n. d. : 1). The presence of limestone dictates the resulting calcium hardness levels since these are mainly composed of calcite or calcium carbonate which disperses into the surrounding passing water. Take note that calcium carbonate is the one measured in tests for calcium hardness. Other points realized from the resulting data are also present. For one, there is no evident correlation between pH and hardness readings. In relation to this, the pH levels still play a role in the resulting hardness since they partially dictate the degree of solubility, but due to the fact that there are other factors at work it does not greatly influence the resulting hardness level of water. Another point observed is in terms of colour endpoints in titration. All samples were violet for calcium hardness and grey for total hardness. The last point observed from the resulting data is in terms of the relationship between absorption and calcium hardness. Figure 2 shows that there is a direct relationship between calcium hardness and absorption reading. Hence, as the absorption reading increases, so does calcium hardness. This is probably due to the fact that absorption readings are enhanced when there are more suspended particles or substances in water. These particles block light better than water alone, hence the greater degree of absorption. List of References Dartmouth College. (2008) Titration [online lab manual] delivered for Chemlab: The Chemistry 3/5 6 Laboratories on 1 October 2008 at Dartmouth College available from http://www. dartmouth. edu/~chemlab/techniques/titration. html [26 March 2009]

Paper chromatography Essay Example for Free

Paper chromatography Essay Aim : to separate and identify of the pigments in leaves by paper chromatography Principle of design: In this experiment, a strip of filter paper containing a small spot of concentrated chlorophyll pigment is dipped in a mixture of developing solvent, the pigments was carried up the strip as the solvents move up. Since the solvents moved at different rates and pigments had different solubilities in them, the pigments gradually become separated. When the solvent was near the top of the paper, the paper was removed. After that, Rf (Relative front) for that substance were calculated. In this experiment, Rf values were used to identify the different substances present in the leaf extract mixture. Instructions: 1. 3 leaves of spinach were ground in pestle and mortar by 2 cm3 of extraction solvent 2. the developing solvent was added into the boiling tube and it just touched the lower edge of the paper strip. 3. The tube was kept stopper to allow it to saturate with the solvent vapour 4. Both sides of paper strip were trimmed to make sure that the sides of paper strip didnt touch the sides of the boiling tube 5. A light pencil line was ruled 20mm from the lower edge of paper strip 6. A capillary tube was dipped into the extract and a small drop of the extract was put in the middle of the starting line. When it was dried, another drop was added and adding was continued until the spot was quite dark. The spot was kept as small as possible. 7. One end of the strip was folded at 90 so that when the paper strip was suspended with a pin from the stopper, the opposite end would just dip into the surface of the solvent. 8. The chromatogram was allowed to develop until the solvent front is 2 cm from the upper edge of paper strip. 9. The paper strip was taken out and a light pencil line was ruled to mark the solvent front. 10. The pigment patches were circled immediately with a pencil. 11. The Rf values for the different pigments in the leaf extract were calculated. Results: The distance that the solvent travels = 9.3cm Rf of the top yellow spot = 8.9/ 9.3 = 0.96cm Rf of the middle orange spot = 6.8/ 9.3 = 0.73cm Rf of the bottom bright green spot = 5.7/9.3 = 0.61cm Rf of the lowest green spot = 4.4/9.3 = 0.47cm Therefore the top yellow spot is carotene pigment, the middle orange spot is xanthophyll pigment, the bottom bright green spot is chlorophyll a pigment, and the lowest green spot is chlorophyll b pigment. Discussion: Chromatography is an effective method of separating the solutes in a solution. Paper chromatography is the process we used to separate various chemicals found in the pigment, in the case is chlorophyll. The four pigments that being separated were chlorophyll a, chlorophyll b, xanthophyll II, and carotene. These pigments were each separated at a different point on the paper. This is because of few different factors. First, each pigments has a different mass, and therefore are heavier and cannot travel up the paper as far, or as quickly. In this experiment, the heaviest pigment is chlorophyll b as it is the lowest, and the lightest pigment is carotene as it is the top of all pigments. The second factor was the solubility of the pigment. The least soluble pigment should travel up the shortest distance, and the most soluble pigment should travel up the longest distance. In this experiment, the least soluble pigment was chlorophyll b, and the most soluble one was carotene. The third factor was adsorption, that is the ability to attract other substances strongly and hold on their surface. The pigment with the greatest adsorption ability traveled up the shortest distance, and the pigment with the weakest adsorption ability traveled up the longest distance. In this experiment, carotene had the weakest adsorption ability, and chlorophyll b had the greatest adsorption ability. The strip of filter paper should be freely suspended in the test tube, this is because the movement of the pigment on the paper in contact or near the glass would cause the particles to be attracted to the side such that net charge of the force would be towards the side. The test tube must be stoppered. This is to produce a saturated atmosphere in the test tube. Also, it was to prevent the evaporation of the solvent, which is toxic. Conclusion: There were four pigments being separated from chlorophyll, they were chlorophyll b, which is the least soluble, heaviest and have the greatest ability of adsorption, chlorophyll a, xanthophyll II and carotene, which is the most soluble, lightest and have the weakest ability of adsorption.

Global System for Mobile (GSM) Communication Overview

Global System for Mobile (GSM) Communication Overview Tara Rushdi Haydar Sinar Selahaddin Merdan Rojgar Mewlud Murad Contents (Jump to) Introduction What is GSM? GSM Network Architecture What is Roaming? What is GRAN? Requirement need for building GSM Generation of GSM Conclusion References Introduction GSM is a connection between two people − a caller and the called person – is the basic service of all telephone networks. To apply this service, the network must has ability to set up and maintain a call, which includes some tasks: identifying the called person, determining the location, routing the call, and ensuring that the connection is continued until conversation lasts. After the transaction, the connection is terminated. In a fixed telephone network, providing and managing connections is an easy process, because telephones are connected by wires to the network and their location is permanent from the networks’ point of view. Whereas, in a mobile network, the establishment of a call is more complex task, because it doesn’t have wire and permanent location. It enables the users to move by wireless (radio) connection. What is GSM? GSM stands for Global System for Mobile Communication and is an open, digital cellular technology transmits mobile voice and data services. It is a  digital  mobile telephony system that is widely used technology in the world. The GSM market has more than 70 percent of the worlds digital cellular subscribers. The GSM makes use of narrowband  Time Division Multiple Access (TDMA)  technique for transmitting signals. The GSM was developed by using digital technology. It has an ability to carry 64 kbps to 120 Mbps of data rates. GSM operates at either the 900  MHz  or 1800 MHz frequency band. In Europe, operates in the 900MHz and 1.8GHz bands and in US, operates 1.9GHz and 850MHz bands. The GSM is a circuit-switched system that divides each 200 kHz channel into eight 25 kHz time-slots. Cell phones use GSM network by searching for cell phone towers in the nearby area. GSM carriers have roaming contacts with other GSM carriers and typically cover rural areas more completely. GSM also has the advantage of using SIM (SubscriberIdentityModule) cards. The SIM card, which acts as your digital identity, is tied to your cell phone service carrier’s network rather than to the handset itself. This allows for easy exchange from one phone to another without new cell phone service activation. Today, more than 690 mobile networks provide GSM services across 213 countries and GSM represents 82.4% of all global mobile connections. According to GSM World, there are now more than 2 billion GSM  mobile phone users worldwide. GSM World references China as the largest single GSM market, with more than 370 million users, followed by Russia with 145 million, India with 83 million and the USA with 78 million users. GSM network architecture The GSM network is divided into three major systems: The operation and support system (OSS) The switching system (SS) The base station system (BSS)     Ã‚   GSM network architecture The Operation and Support System (OSS) The OSS stands for operation and support system. The function of OSS is that monitors and controls the system. The aim of OSS is that customer cost-effective support for centralized, regional, and local operational and maintenance activities that are needed for a GSM network. An important task of OSS is to ensure a network overview and support the maintenance activities of different operation and maintenance organizations. The Switching System The switching system (SS) is responsible for performing call processing and  Subscriber-related functions. The switching system (SS) includes some functional units: Home location register (HLR)—The HLR is a database used for storage and management of subscriptions. The HLR stores permanent data about subscribers, including a subscribers service profile, location information, and activity status. When a person buys a subscription, he/she is registered in the HLR of that operator. Mobile services switching center (MSC)—The MSC performs the telephony switching functions of the system. It controls calls to and from other telephone and data systems. Also, it performs toll ticketing, network interfacing, common channel signaling, and others functions. Visitor location register (VLR)—The VLR is a database that contains temporary information about subscribers that is needed by the MSC in order to service visiting subscribers. The VLR is always integrated with the MSC. When a mobile station roams into a new MSC area, the VLR connected to that MSC will request data about the mobile station from the HLR. Later, if the mobile station makes a call, the VLR will have the information needed for call setup without having to interrogate the HLR each time. Authentication center (AUC)—A unit called the AUC provides authentication and encryption parameters that verify the users identity and ensure the confidentiality of each call. The AUC protects network operators from different types of fraud found in todays cellular world. Equipment identity register (EIR)—The EIR is a database that includes information about the identity of mobile equipment that intercepts calls from stolen, unauthorized, or defective mobile stations. The Base Station System (BSS) All radio-related functions are performed in the BSS, which consists of base station controllers (BSCs) and the base transceiver stations (BTSs). BSC—The BSC provides all the control functions and physical links between the MSC and BTS. It is a high-capacity switch that provides functions such as handover, cell configuration data, and control of radio frequency (RF) power levels in base transceiver stations. BTS—The BTS handles the radio interface to the mobile station. The BTS is the radio equipment (transceivers and antennas) needed to Service each cell in the network. BSC controls a group of BTSs. MS MS stands for Mobile Station. It is a combination of terminal equipment and subscriber data. The terminal equipment is called ME (Mobile Equipment) and the subscribers data is stored in a separate module called SIM (Subscriber Identity Module). Therefore, ME + SIM = MS. The SIM card contains an identification number of the user and list of available networks. What is Roaming? Roaming allows a mobile subscriber to automatically make and receive voice calls, send and receive data, or access other services when travelling outside the geographical coverage area of their home network, by means of using a visited network. Roaming is technically supported by mobility management, authentication and billing procedures. Establishing roaming between network operators is based on – and the commercial terms are contained in – dedicated roaming agreements. If the visited network is in the same country as the home network, this is known as national roaming. If the visited network is outside the home country, this is known as international roaming. If the visited network operates on a different technical standard than the home network, this is known as inter-standard roaming. GSM Roaming, which involves roaming between GSM networks, offers the mobile subscriber the convenience of being able to use a single number, a single bill and a single phone. The convenience of GSM Roaming has been a key driver behind the global success of the GSM Platform. The GSMA’s  GSM Coverage Maps  are a unique resource containing information supplied and approved by the members of the Association. The network, services and roaming information are continually updated to reflect the evolving situation worldwide. Interactive coverage maps, updated quarterly, allow you to navigate to see where exactly you can use your phone. What is GRAN? GRANis an abbreviation of  GSMRadio Access Network. It consists of  Base Transceiver Stations  (BTS) and  Base Station Controllers  (BSC). Its purpose is to manage the radio link between  mobile phones  and a  telecommunicationcore network. This access network provides access to both  Circuit switched  (CS) and  Packet switched  (PS) core networks. Aradio access network(RAN) is part of a mobile  telecommunication  system. It implements a  radio access technology. Conceptually, it resides between devices like a mobile phone, a computer, or any remotely controlled machine and provides connection with its  core network  (CN). Depending on the standard, mobile phones and other wireless connected devices are varyingly known as user equipment (UE), terminal equipment, mobile station (MS), etc. RAN functionality is typically provided by a silicon chip residing in both the core network as well as the user equipment. Network Management Subsystem (NMS) The Network Management Subsystem (NMS) is the third subsystem of the GSM network in addition to the Network Switching Subsystem (NSS) and Base Station Subsystem (BSS). The purpose of the NMS is to monitor various functions and elements of the network. The operator workstations are connected to the database and communication servers via a Local Area Network (LAN). The database server stores the management information about the network. The communications server takes care of the data communications between the NMS and the equipment in the GSM network known as â€Å"network elements†. These communications are carried over a Data Communications Network (DCN), which connects to the NMS via a router. The functions of the NMS can be divided into three categories: Fault management Configuration management Performance management These functions cover the whole of the GSM network elements from the level of individual BTSs, up to MSCs and HLRs. Fault management The aim of fault management to detect different type of problems then solve them rapidly. Fault management provides the network operator with information about the current status of alarm events and maintains a history database of alarms. The alarms are stored in the NMS database and this database can be searched according to criteria specified by the network operator. Configuration management The purpose of configuration management is to maintain up-to-date information about the operation and configuration status of network elements. Specific configuration functions include the management of the radio network, software and hardware management of the network elements, time synchronization, and security operations. Performance management In performance management, the NMS collects measurement data from individual network elements and stores it in a database. On the basis of these data, the network operator is able to compare the actual performance of the network with the planned performance and detect both good and bad performance areas within the network. Requirement need for building GSM Hardware and software A typical GSM base station, can’t do anything without a suite of components that maintain databases, perform call- ­switching functions, and so forth. This infrastructure is expensive (typically around $250,000) and complicated to configure, and it needs to be stored in an air-conditioned room. Obviously, that’s impractical in the kinds of places  ­OpenBTS is designed for. As a result, the system replaces much of the physical infrastructure of the core network with VoIP software–in this case, an open-source program called Asterisk that can be installed on any off-the-shelf PC. IP Connection Cell-phone users on an OpenBTS network can reach each other even if the system isn’t connected to the Internet, but reaching someone outside the network requires an Internet connection. On Niue, the group used five-gigahertz IP radios to link the BTS unit to Telecom Niue’s wired Internet infrastructure, four kilometers away. Burgess says that response time can get a bit sluggish if the Internet connection isn’t very good, but it doesn’t take much bandwidth to make the system functional. Power supply The system deployed on Niue draws about 60 watts of power, supplied by three marine batteries of the type that many locals use on their boats. Because the system’s power requirements are so low, Burgess says, a base station could also run on solar or wind power. GSM  handset OpenBTS re-creates the technology behind GSM (the global system for mobile communications), which is used by the majority of mobile phones in the world. Any GSM phone will â€Å"see† an OpenBTS network as a standard cell network and interact with it normally. Antenna Like any cell network, an OpenBTS system requires an antenna to facilitate signaling. Different types of antennas can be used, according to the range the operator wants the network to have. Generation of GSM First generation technology(1G) First-generation mobile systemsused analog transmission for speech services. It offered handover and roaming capabilities, but it was unable to interoperate between countries. So, this is disadvantage of first-generation. Second generation technology(2G) Second generation mobile system used digital transmission. It able to use handover and roaming capabilities. It uses FDMA, TDMA, and CDMA. Third generation technology(3G) Third generation technology has fast data transfer rate. It enables to add services like mobile television, GPS, and video conferencing. Services include a wide area wireless voice telephony, video call, and broadband wireless data, all in mobile environment. Fourth generation technology(4G) Fourth generation technologyhas more bandwidth and services than 3G. The expectation for the 4G technology is the high quality audio/video streaming overend to end Internet Protocol, and work at 100 Mbps for mobile users and upto 1 Gbps over fixed stations. The word â€Å"MAGIC† also refers to 4G wireless technology which stands for Mobile multimedia, Any-where, Global mobility solutions over, integrated wireless and Customized services. Fifth generation technology (5G) Fifth generation technology has changed the means to use cell phones within very high bandwidth, high connectivity, and has extraordinary data capabilities. User never experienced ever before such a high value technology. The 5G technologies include alltype of advanced features which makes5G technology most powerful and in huge demand in near future. 5G technology including camera, MP3 recording, video player, largephone memory ,dialing speed, audio player and much more you never imagine. 5G technology going to be a new mobile revolution in mobile market, so may be incoming days 5G technology takes over the world market. Conclusion Year by year, the GSM system improves and its subscribers increases around the world. It divides into three main parts that are OSS, SS, and BSS. These parts include some important department that manages the system, stores information of users, and another tasks. GSM has ability to roam worldwide and has roaming agreements in place with foreign operators globally. So, users can easily use their same SIM in another cities or countries. GSM network facilitate easier access to cellular and satellite platforms across international lines. Using digital technology, it employs both speech and data channels in its system. In addition, GSM has network management subsystem that detects problems and solves them, maintains information up to date, and detects good and bad performance of a network. References http://searchmobilecomputing.techtarget.com/definition/GSM http://en.wikipedia.org/wiki/GSM_radio_access_network http://en.wikipedia.org/wiki/Radio_access_network http://www.gsma.com/aboutus/gsm-technology/roaming https://www.eff.org/files/filenode/global_system_for_mobile_communication_technology.pdf http://www.tutorialspoint.com/gsm/gsm_overview.htm http://cellphones.about.com/od/phoneglossary/g/gsm.htm http://www.academia.edu/3099956/Generations_of_Wireless_Communication._From_0G_to_5G_Abhi http://www.technologyreview.com/hack/418552/build-your-own-cellular-network/

Project Management for Information Systems Essay examples -- Business

Project Management for Information Systems Abstract Information systems (IS) projects are vulnerable to resource cutbacks and the increasing complexity of systems and advances in information technology make finding the right personnel difficult and the associated development costs high. Good project management is essential for success. Some alignment methodologies include IBM's business systems planning (BSP), Robert Holland's strategic systems planning, James Martin's (1989) information engineering and method/1 from Anderson Consulting. Critical success factors (Rockart, 1979) methodology focuses on identifying key information needs of senior executives and building information systems around those key needs. Williams, (1997) identified four steps to system planning. Earl (1989) proposed five alternate strategy frameworks which project managers should consider when deciding how the system will enhance the business function. Standard business strategy methods are used to identify such opportunities by using: value chains, application searching and information analysis (Earl 1989). Project managers may decide that major changes to business processes may be required. Change management is important for project managers and business leaders, starting at the project phase and continuing throughout the entire life cycle. Employees need training to understand how the system will change business processes. Technology factors relate to the system software, support for legacy systems and the IT infrastructure on which the system will be put on. Information systems are powered by information technologies which need to last throughout the system development life cycle. Introduction The responsibility for achievin... ...Manufacturing Systems, 5, 1, 31-8. - Rockart, J.F., 1979, "Chief executives define their own data needs", Harvard Business Review, 57, 2, 81-93. - Rosario, J.G, 2000, "On the leading edge: critical success factors in ERP implementation projects", BusinessWorld, Philippines. - Scheer, A, Habermann, F, 2000, "Making ERP a success", Communications of the ACM, 43 , 3, 57-61. - Sumner, M, 1999, "Critical success factors in enterprise wide information management systems projects", Proceedings of the Americas Conference on Information Systems (AMCIS), 232-4. - Wee, S, 2000, "Juggling toward ERP success: keep key success factors high", ERP News, http://www.erpnews.com/erpnews/erp904/02get.html. - Williams, L.T, 1997, â€Å"Planning and managing the information system - a manager's guide†, Industrial Management & Data Systems Volume 97 Number 5 1997 pp. 187-191 Project Management for Information Systems Essay examples -- Business Project Management for Information Systems Abstract Information systems (IS) projects are vulnerable to resource cutbacks and the increasing complexity of systems and advances in information technology make finding the right personnel difficult and the associated development costs high. Good project management is essential for success. Some alignment methodologies include IBM's business systems planning (BSP), Robert Holland's strategic systems planning, James Martin's (1989) information engineering and method/1 from Anderson Consulting. Critical success factors (Rockart, 1979) methodology focuses on identifying key information needs of senior executives and building information systems around those key needs. Williams, (1997) identified four steps to system planning. Earl (1989) proposed five alternate strategy frameworks which project managers should consider when deciding how the system will enhance the business function. Standard business strategy methods are used to identify such opportunities by using: value chains, application searching and information analysis (Earl 1989). Project managers may decide that major changes to business processes may be required. Change management is important for project managers and business leaders, starting at the project phase and continuing throughout the entire life cycle. Employees need training to understand how the system will change business processes. Technology factors relate to the system software, support for legacy systems and the IT infrastructure on which the system will be put on. Information systems are powered by information technologies which need to last throughout the system development life cycle. Introduction The responsibility for achievin... ...Manufacturing Systems, 5, 1, 31-8. - Rockart, J.F., 1979, "Chief executives define their own data needs", Harvard Business Review, 57, 2, 81-93. - Rosario, J.G, 2000, "On the leading edge: critical success factors in ERP implementation projects", BusinessWorld, Philippines. - Scheer, A, Habermann, F, 2000, "Making ERP a success", Communications of the ACM, 43 , 3, 57-61. - Sumner, M, 1999, "Critical success factors in enterprise wide information management systems projects", Proceedings of the Americas Conference on Information Systems (AMCIS), 232-4. - Wee, S, 2000, "Juggling toward ERP success: keep key success factors high", ERP News, http://www.erpnews.com/erpnews/erp904/02get.html. - Williams, L.T, 1997, â€Å"Planning and managing the information system - a manager's guide†, Industrial Management & Data Systems Volume 97 Number 5 1997 pp. 187-191

Husain Haddawy’s The Arabian Nights and Zora Neale Hurston’s Mules and

Husain Haddawy’s The Arabian Nights and Zora Neale Hurston’s Mules and Men - Revealing the Conflicts, Desires and Dreams of the Collector "For the translator, who stands astride two cultures, possesses two different sensibilities, and assumes a double identity" —Husain Haddawy Magic, love, sex, war, gods, spells. These are all common ingredients in the folktales of almost every culture. Many people say that folktales are windows to cultures. That might be so. Often readers do not realize, though, that folktales also reflect aspects of the collectors. Zora Neale Hurston’s Mules and Men and Husain Haddawy’s The Arabian Nights, in addition to offering insight into southern African-American culture and Arabic culture, reveal the collectors to the audience; the collectors’ desire to reconcile with their past, to be accepted by their reader as legitimate representatives of that culture whether by being an insider or both insider and outsider to the culture, and to be heroic cultural interpreters with the goal of educating and informing the reader. There are many reasons and motivations behind Hurston’s compilation of African-American folktales, but one that is often overlooked is her personal need to reconcile her intellectual, White, Barnard-educated life with her traditional roots in Eatonville, Florida. In her introduction Hurston writes: From the earliest rocking of my cradle, I had known about the capers Brer Rabbit is apt to cut and what the Squinch Owl says from the house top. But it was fitting me like a tight chemise. I couldn’t see it for wearing it. It was only when I was off in college, away from my native surroundings, that I could see myself like somebody else and stand off and look at my garment. Then ... ...nd the present culture of the audience, which they intended to reach. Haddawy and Hurston sought acceptance from the reader and thus emphasized the legitimacy of their works whether by establishing themselves as an insider or as both an insider and outsider to their respective cultures. Moreover, by proving the ‘superior’ authenticity of their works in comparison to previous works, they offer themselves as ‘heroes,’bringing forth insights of the culture of their youth to the reader. Indeed, The Arabian Nights and Mules and Men are not only collections of magical folktales: They reveal the inner conflicts, desires and dreams of the translator and collector themselves. Works Cited 1) Zora Neale Hurston, Mules and Men (New York: Harper Perennial, 1990). 2) Husain Haddawy, The Arabian Nights, trans. Husain Haddawy, ed. Muhsin Mahdi (New York: Norton, 1990).

How Did Climate Serve as a Trigger Event for the Bangladeshi Liberation

Climate issues have come to the forefront of popular culture and is a hot topic in the arena of politics and beyond. More recently numerous academics have started to research how not only global warming, but climate can increase the risk of civil war or ignite armed conflict. One of the most introductory article on the subject is written by Marshall Burke and discusses how climate has increased the risk of civil war in Africa. One of the conclusions Burke and his colleagues draw from their quantitative research is that not only can climate trigger civil conflict but also â€Å"that climate change will worsen instability in already volatile regions† (Burke, p.1). Moreover, during the time of the Bangladeshi Liberation War that was the case. Bangladesh, at the time referred to as East Pakistan was in a tumultuous state and a breeding ground for conflict. However, it wasn’t until the 1970 Bhola cyclone that devastated the area that the East Pakistani’s decided to move forward in their secession from West Pakistan, which led to the Bangladeshi Liberation War. This paper will be divided into four sections. The first section will set the theoretical foundation for how climate can cause conflict. The second section will identify and analyze the different conflict factors that were present in East Pakistan and were amplified/affected by the cyclone. The third section will examine the extent and damage caused by the cyclone, focusing on numbers and logistics. The last section will take the information that had been presented previously and create the links between it and how it relates to argument of the Bhola cyclone triggering the lib eration war. There has not yet been a tremendous amount of research done on how exactly climate can trigg... ... 132- 144. Academic Search Premier. Web. 6 Apr. 2012. Nanda, Ved. "Self-Determination in International Law: The Tragic Tale of Two Cities--Islamabad (West Pakistan) and Dacca (East Pakistan)." American Journal of International Law. 66.2 (1972): 321-336. Academic Search Premier. Web. 9 Apr. 2012. Sappenfield, Mark. "CLIMATE MAY HEAT CONFLICT, TOO." Christian Science Monitor 06 Dec. 2007: 13+. Academic Search Premier. Web. 10 Apr. 2012. Schanberg, Sydney. "Pakistan Divided." Foreign Affairs. (1971): 125-135. Academic Search Premier. Web. 10 Apr. 2012. Schanberg, Sydney. "Yahya Concedes 'Slips' In Relief. "New York Times [New York] 22 NOV 1970, 10. Academic Search Premier. Web. 5 Apr. 2012. Staff Writer, . "East Pakistani Leaders Assail Yahya on Cyclone Relief." New York Times [New York] 23 NOV 1970, 5. Academic Search Premier. Web. 5 Apr. 2012.

Information Systems Technology Essay

Computer engineers are responsible for analyzing, designing and building software applications in an IT firm concerned with developing application software’s for various businesses. Once the primary analysis is done by the system analyst the coding phase is prepared by the software engineers where they have enough programming experience to bring the design model into a running system. They are responsible to get the logical design in paper to implement into a physical working system. They use their programming ability to design the business modules. They are usually concerned with the development of the system and taking care of the user interfaces, business rules implementation and the design methodologies which are required by any business employing information systems. They are also responsible for selecting the right programming tool for designing the user interface and enveloping the functionalities of the concerned tool in framing the business policies. Role of software tester: Software testers work in collaboration with the software engineers to eliminate the bugs in the software. They are primarily concerned with testing the software for checking the software for fulfilling the requirements and checking whether the software runs successfully with the requirements fulfilled. This is mainly concerned with validation and verification of the software. They prepare test cases to test the software for boundary checks, limit checks, data type checks, calculations of business processes and many others. They create and maintain reports to keep track of the systems reports and account of the defects which are found in the process. The classification of the defects is the next step. The defects are either corrected by the software tester or are forwarded to the software engineers to be corrected and submit again for errors. They are usually concerned with elimination of anomalies which are quite a hindrance in the business environment and pose a great threat to data and security. References /Bibliography See: http://getaccess. westone. wa. gov. au/careers/ profiles/data/OCC247. asp See: http://www. bls. gov/oco/ocos267. htm