Wednesday, December 25, 2019

Analysis Of Dogtown And The Z Boys - 845 Words

Dogtown and the Z-boys is a movie that represented the concept of youth subcultures. It expressed social conflicts associated with class, and culture. Although, the Dogtown movement first started off as a surfer subculture. Later, environmental, and historical consequences created the skater subculture. What is seen in this film is a minority group of teenagers from the outskirts of South Santa Monica and Venice beach. The skater subculture in Dogtown was created by the Zephyr club. In which it consisted of teenagers with similar backgrounds and styles. For example, they all came from broken down homes, they were aggressive, competitive, and much localized to their community. In a sense, like in any youth subculture, skaters were consider outcast, and full of trouble. Although, factors relating in social, environmental, and historical impacts lead this subculture to become very influential during its time period, and to become skating trailblazers. The movie takes place in the low Do gtown, is a city described in this movie to be low-income, discarded, have to have a melting pot of a variety of subcultures. The film starts off by describing the surfing youth subculture. It describes this subculture as an outcast to society. They then describe the Jeff Ho surfing club of surfers and their creation of a close net cult. After the introduction of the surfing subculture, the movie shifts its action to the skater subculture created by the surfer ideals, and style.Show MoreRelatedAnalysis Of Stacy Peralta s Film, Lords Of Dogtown And Z Boys And Crips And Bloods1395 Words   |  6 Pagesexcept that he was a former professional skateboarder. Later that night, I went on my computer and did research about who he was and that is when I found out about the Dogtown skate crew. All of the information that I gathered that night changed my life forever. I had scene both Dogtown films, Lords of Dogtown and Dogtown and Z-Boys. I rarely ever read the opening or closing credits, so I had never known that Stacy Peralta wrote the screenplay for the former and was a co-writer and director for theRead MoreAnalysis Of Two Documentaries Essay examples838 Words   |  4 PagesAnalysis Of Two Documentaries I will be analysing two very different types of documentary, Dogtown and the Z-Boys, which takes the role of being a full length movie type documentary, and Teenage Transsexuals which was recently shown on Channel 4. Dogtown and the Z-Boys is a documentary which takes a look at the transformation of surfing into skateboarding. The film follows the evolution of skating through its heyday in the 70s, to its decline in the 80sRead MoreLuigi Periscos Discovery of America and Horatio Greenoughs Rescue2358 Words   |  9 PagesShall Remain: America Through Native Eyes† (PBS) (7) â€Å"We Shall Overcome† (PBS) (8) â€Å"God in America† (PBS) (9) â€Å"Zoot Suit Riot† (PBS), (10) â€Å"Inventing LA: The Chandlers Their Times† (PBS) (l1) â€Å"Shotgun Freeway: Drive thru Lost L.A.† (12) â€Å"Dogtown and the Z Boys,† (13) â€Å"They Made America: Rebels, Revolutionaries, Newcombers, Gamblers† (PBS) [You can watch the section just on rebels, revolutionaries, newcomers, or gamblers) . The review of the documentary should make an explicit link between the

Tuesday, December 17, 2019

Questions On The Fourth Amendment - 1813 Words

1) Describe Fourth Amendment as you understand including all areas and places it covers? Fourth Amendment protects people from unreasonable searches and seizures of certain papers, books, documents etc. Rules are not violated in it. There must be probable reason because in order to arrest a particular person without a search warrant. It possesses an oath or affirmation from the government. It has two fundamental rights as Right to privacy and Right to freedom. Search occurs when it has a correct reason that was obligated by the government people. Private individuals are violated from this amendment. A seizure happens the owner must has a right documents with him on his own property, if not the documents is seized and the person gets arrested. Sometimes the property belongs to other possessor but in mistake reasonable person gets involved in the task. The banning of unreasonable searches can violate many things to be happen. If a person is produced to court without a proper reason the judge cannot accept it, because it requires a perfect condition. A man initiates a case over the other it must be very strong and has legitimacy exception privacy in it. Legitimate Expectation has two tests for privacy namely Subjective and Objective. In Subjective plaintiff expects more privacy very honestly, where as Objective refers to the same and similar privacy but in certain conditions only. The Exclusionary Rule: This rule holds that if police violates your constitutional rights inShow MoreRelatedQuestions On The Fourth Amendment1770 Words   |  8 PagesHOMEWORK: 1 1. Describe Fourth Amendment as you understand including all areas and places it covers? A. The main aim of us constitution about the fourth amendment law is to protect the people from unreasonable searches and seizes and also the right of the people to be secure from persons, papers, effects etc....They are no right to search or seize any individuals without any search warrant. They must not be violated by warrants issued without any cause, supported by oath or affirmation, or not describingRead MoreQuestions On Fourth Amendment Jurisprudence2218 Words   |  9 Pages†¢ Fourth Amendment jurisprudence is primarily concentrated in four areas: 1) defining â€Å"searches†; 2) the Warrant Requirement, in which warrantless searches are semantically precluded except in specific and tightly constricted situations; 3) the Probable Cause Requirement, whose exclusive provisions are closely associated with the Warrant Requirement’s proscription of police inquiries into same; and, 4) the exclusionary rule, which presumptively excludes any information or evidence gatheredRead MoreSearch And Seizure : Lesson Plan1069 Words   |  5 PagesSearch and Seizure Lesson Plan Teacher: Miradije Rashiti Grade Level: 11th Grade Subject Area: U.S. Civics Content Focus: Fourth Amendment Relevant State and National Content Standards/Common Core Standards CCSS.ELA-LITERACY.RH.11-12.3 Evaluate various explanations for actions or events and determine which explanation best accords with textual evidence, acknowledging where the text leaves matters uncertain. CCSS.ELA-LITERACY.RH.11-12.7 Integrate and evaluate multiple sources of information presentedRead MoreThe Second Amendment And The Fourth Amendment1384 Words   |  6 Pagesthis reason, the agencies and enterprises have been called into question of infringement of the fourth. Using the lessons learned from history, the framers of the constitutions created the fourth amendment, which protects from unreasonable searches, and the fifth amendment, which prevents a person from incriminating himself or herself, to create a government with just laws, but with the advancement in technology, the fourth amendment needs to expand its policies to fit the changes in modern societyRead MoreName Of The Case: Katz V. The United States. 389 Us 3471203 Words   |  5 Pagesarguing that the recordings violated his fourth amendment right to which the Court of Appeals rejected this point, noting the absence of a physical intrusion into the phone booth itself. The Court granted certiorari. Issue: Does the Fourth Amendment protection against unreasonable searches and seizures require the police to obtain a search warrant in order to wiretap a public pay phone? Holding: Although the Court ruled that Katz was entitled to Fourth Amendment protection for his conversations andRead MoreU.s. Supreme Court And The Fourth Amendment1564 Words   |  7 PagesThe U.S. Supreme Court and the Fourth Amendment Since the founding of the American Democracy, partisanship has always been a major problem when it comes to political aspects of the law. The Constitution was designed to implement laws into our country that would make our governing body run smoother with fewer conflicts. However, when dealing with Democracy based on the â€Å"people’s word† it is hard to avoid such conflicts. Since each citizen in our country has the right to freedom of speech and thoughtRead MoreApplication Of The Gps Monitoring Program1488 Words   |  6 Pagesindividual found to be a recidivist sex offender must be ordered to partake in the sex offender monitoring system. Grady raised objections to the program arguing because of the unreasonable searches the structure of the program allows that his Fourth Amendment rights would be violated. The purpose of the GPS monitoring program enforced by the Division of Adult Correction is to manage the risk assessment of individuals who enter into public society after having been imprisoned. As participants in theRead MoreImagine You Are On A Family Road Trip You Drive Through1403 Words   |  6 Pagesyou are on a family road trip; you drive through a red light. Next thing you know you re getting pulled over and the officer orders you and your family to get out of the car. Either the officer wants to search your vehicle or arrest you. Is the question this legal or illegal for the officer to do? I believe that search and seizure are ethical because it protects citizens from an unlawful entry and provides protection for law enforcement in case a person is dangerous or to provide evidence to useRead MoreMapp V. Ohio ( 1961 )1619 Words   |  7 Pagesthe Fourth Amendment, which protects against unreasonable searches and seizures,† which cannot be used in the law on the stat e level or in criminal prosecutions in state courts, and in addition, federal criminal law prosecutions in federal courts (MAPP v. OHIO. They Oyez Project at IIT Chicago-Kent College of Law.) The Supreme Court successfully completed this by use of selective incorporation. In Mapp the association was within the incorporation of the provisions, of the Fourth Amendment whichRead MoreLaw Enforcement s Use Of Illegal Search Warrants1009 Words   |  5 PagesLaw Enforcement’s use of illegal search warrants in violation of the fourth amendment rights. This is the case of Jones v. United States (2012). Antoine Jones owned a nightclub in the District of Columbia. In 2004, a joint Federal Bureau of Investigation (FBI) and Metropolitan Police Department task force began investigating Jones for narcotics violations. During the course of the investigation, a Global Positioning System (GPS) device was installed on Jones s Jeep Grand Cherokee, without a valid

Monday, December 9, 2019

Feasibility Study Of Kiwi Auto Parts Samples †MyAssignmenthelp.com

Question: Discuss about the Feasibility Study Of Kiwi Auto Parts. Answer: Feasibility Study A feasibility study can be said as the analysis of successful nature of a project. It generally affects certain factors like economic, technology, legal and scheduling. A project report is generally used to determine positive and negative output of a project before giving a good of amount of time and money to it. A feasibility study checks the energy of an idea, or a project. The ultimate goal behind studying feasibility is to judge on the potential problems that can occur in a project. It helps in checking all the significant factors that should be checked before pursuing a project. Feasibility study allow companies to check all the necessary information before establishing a new business (Balaji Murugaiyan, 2012). The components of feasibility study are Description, market feasibility, technical feasibility, financial feasibility, organizational feasibility. Description: This mainly checks a brief layout of the business, the various product and service that can be offered and how they will be delivered to the consumer. Market feasibility: It mainly describe the current and market potential, competition, sales estimation and prospective buyers of a industry. Financial feasibility: It mainly checks the amount of money needed for start up business. It also checks the various capitals that can be used for the establishment of business and type of return expected from it. Organizational feasibility: It can be define as the corporate and legal structure of business and this may contain information about its founder and their background of their profession. It also seeks the skills needed for proper functioning of the firm (Duan et al ., 2012). Set of Criteria The six basic parts of feasibility study are project scope, current analysis, Requirements, approach, evaluation and review. Project scope: This particular part is mainly used for business problem and various opportunities that must be addressed. The project should be concise and according to point. It is also important for defining various parts of business directly and indirectly containing project members and users. Current analysis mainly helps in implementation of current technique of working of a system, product. By the help of this particular analysis one can get a proper idea about current system or product. It also helps in getting clear view about pros and cons of a system. With the help on this analysis, certain elements of product and current system can be discovered which can save both money and time (Bekele Tadesse, 2012). Requirement: This totally depends on working model of a project; it varies from product to product. Requirement analysis of a bridge will obliviously differ from that of a information system. Approach: It represents recommendation for various solution and actions for satisfying the requirements. Use of various structure and commercial alternatives are needed to be taken in account. Evaluation: This particularly helps in analysis of a selected approach. In this step, the total cost of the projects is analyzed. It helps in estimation of labour cost and other expenses for project scheduling which informs the project path and it start and end dates. Review: The consisting elements are taken together in a feasibility study and a formal opinion is taken from all the involved parties. The review gives benefits like approval of project decision and judging thoroughness of a project. Now there are some instances where feasibility of a project is rejected and it is the duty of manager or senior executive to explain the reason for rejection ( Khan Beg, 2013). SDLC SDLC stands for System Development Life Cycle aims to give high quality system that satisfy the needs of the customers with proper time and cost. It works properly with the modern infrastructure of information technology. SDLC is a non practical model which aims to provide various methods for developing systems throughout their life cycles. SDLC include the following activities like requirement, design, implementation, testing, deployment, operation and maintenance (Mahalakshmi Sundararajan, 2013). Phases of SDLC are Planning, analysis, design, implementation and maintenance. Feasibility study or planning: This step main involve defining of the problem and checks the scope of a system. It also confirms the feasibility of project and scheduling of various projects. Analysis and specification: This step mainly involves gathering and analyzing of important information. It also prioritizes the basic requirements of a project. At the end of this phase a software requirement specification document (SRS) is published which specifies the hardware and network requirement of a particular system ( Unuakhalu, 2014). System Design: This phase mainly includes the designing of various application, networks and database. It helps in creating a proper training and operation plan for better performance of the system. Implementation: This step mainly aim in designing source of a particular system through programming. After that a test report containing error is prepared through various test plans which has some work like checking criteria and resource allocation. Maintenance: It includes various activities like phone support and on-site support for various user that is mandatory during installation of a particular system. Discussion Kiwi Auto parts is considered as one of the most successful distributor among various retailers of New Zealand (Abdelaziz et al., 2013). Tom Mitchell actually owned an auto-shop in central region of Auckland. Previous year this auto manufacturing made a turnover of about 2 million profits. A review is conducted by Alpha IT solutions Ltd (AITS) on the growth and performance of Kiwi solution private limited. As per the AITS report, the system of automobile is becoming unmanageable day by day. Due to overtired staff an order cancellation worth of 300 dollars is taking place every year in this car manufacturing firm (Bai, 2013). Communication has been deteriorating between Marketing manager and retailers has come down to ground. After analyzing the problem AITS suggested the points to the car firm. The car manufacturing firm should install a subsystem for communication among its various systems. All the staffs of this car firm need the path of access to various systems (Thompson et al., 2014). A new system containing a database which can store information of 700 customer should be designed for various customer for this giant car company from New Zealand. The system should be designed in such a way that it can store details of more than 10,000 products. AITS stand for Alpha IT solutions Ltd (AITS) (Zeng She, 2015). AITS have suggested various methods for providing better services and products to their customer by reducing network between centers and implementation of certain things like Hardware upgrades, hardware upgrades, Development of system and a new system known as SAGE and Distribution of scheduling system Dissched (Kamel Fung, 2014). AITS have a new HR package, which will cost around 11000 dollars to the car company (Mohammadi Mostafaeipour, 2013). A new package known as SIAM can be used to replace all the current sales, inventory, Accounts and Marketing departments of the car company known as Kiwi Auto Part Ltd (Li et al.,2013). For better performance of SIAM, i t needs some extra hardware costing around 11,000 dollars. HAMIS which is a smaller application than SIAM has been considered for working in this car firm. After that an up gradation is required in the system for its better performance. The particular application must be coded with proper programming (Cannon et al., 2015). Various departments like distribution and scheduling, HR, marketing, sales, inventory, and accounts can be managed with the help of ERP system. ERP system stands for Enterprise Resource planning is an application that manages business such as sales, purchasing, accounting, and human resource and customer support. By Using ERP technology, various departments of this car manufacturing firm can collect, store, manage and interpret about data from various business bodies. ERP technology is mainly used by large enterprise because of the capital hardware requirement like server and multiple work station. Some of examples of ERP software are Bright pearl, Intact, Net Suite, Odoo, PeopleSoft. Kiwi Auto Part Ltd should use ERP system software as it increases efficiency, promote collaboration, and make accurate forecasts, lower operation cost, and Increases data security (Ahmad Cuenca, 2013). Increase efficiency: Various Business like accounting, sales, marketing, and production and inventory are all summed up in one particular platform known as ERP. ERP system helps in easier collection and accessing of data across various firms and organization. ERP also provides manager and stakeholder with quick check up of the progress of their report. It also give freedom to manager or senior executive to enquire detail information about managers with few clicks (Hejazi, Halpin Biggs, 2014). Promote collaboration: ERP is proved to be key technology to break walls between various departments. A new technology known as data soil is integrated in various systems with a process known as superhighway links all systems from various departments together. It is also used to link various team from different departs. Further, a new technology known as Saas ERP provides a more secure connection between remote teams and headquarters through internet connection (Laudon Laudon, 2013). Make accurate forecast: Many business firms use Forecast, as it helps the firms to shape strategies for the new projects (Richardson Johnson, 2015). ERP brings various business solution to a firm which ultimately enhances data integrity (Schott, 2016). Advanced ERP solution helps the employees to learn about various algorithm that allow users to go down into the Big data system (Almajali, D.Masa'deh Tarhini, 2016). Lowers operational cost: ERP allow various departments like production, engineering, customer service and other business bodies to work together using various techniques like data from real time operation which proven to solve problem at much faster rate (Galy Sauceda, 2014). Increased data security: ERP system has firewalls and restriction that helps in controlling data breach in any situation. A solo data warehouse helps in tightly monitoring of various security systems (Del Pozzo et al., 2013). It also gives the authority to managers or senior executives to deactivate the access of terminated employees of a firm while granting access permission to the new or fresh employees (Hancock, 2016). ERP software has following modules like Human Resource Management, manufacturing, Supply chain management, and inventory and purchasing. HRM (Human resource management): This module mainly focuses on various tools like time tracker, timesheet, a database containing employee records and job profile. HRM mainly focuses to manage travel expense and reimbursements of its employees. Sales and marketing: This module of ERP mainly focuses to handle sales inquires, sales orders and sales invoice. The more advanced version of ERP has certain features like rules for calculating tax and keeping a track of shipping details (Castro et al., 2015).. The ultimate goal of sales and CRM module is to work together to gear up the sales cycle and bring more profit to the respective firm (Chou et al.,2014. Manufacturing: Manufacturing module is also known as Engineering or Production department (Verslegers et al, 2013). It helps various businesses to work more efficiently in certain areas like planning of production, outsourcing of various materials and product forecasting. This module is integrated with supply chain management to provide certain function like planning of products and control of inventory (Haddara, 2014). There are certain functions like up gradation, customization, Integration, training and setup which must be considered for better performance of ERP system. Upgrade: Firstly Kiwi Auto Part Ltd need new ERP system in their firm for increasing their performance level. If the installed ERP module is older than ten years then it has to be replaced (Ghosh, Ghose Mohanta, 2013). Customization: Firms like Kiwi Auto have various processes to look after various departments. Accounting saves or production lives are considered as a daily output on the contrary sales live is considered as a monthly quota( Choi, Chow Liu, 2013). Integration: ERP should work efficiently with the provided system. There are certain numbers of points that must be considered from top to bottom. These include interaction between various systems (ERP into existing CRM), module to system and judging the file transfer capabilities (Snyder, 2015). Training and setup: ERP solution must be installed by someone who has a good technical knowledge( Matzen, Alhajji Demirel, 2015). If a firm lacks a technical team then senior executives or managers should have clear understanding about the various service agreements. In many cases installation is charged differently from license but many a times vendor provide bundled plans (Johnson Wichern, 2014). In some cases setup is very easy for activating accounts to access various vendor servers (Ram Corkindale Wu, 2013). There are some drawbacks of ERP softwares like Unsupported application, security risk, lack of compliance: Unsupported Application: Now consider if a business has dozen of productivity apps, then a plug and play ERP would not run smoothly on it (Lin, Shi Burton, 2013) . If there are large number of softwares in a system then it can narrow the choice of finding a fully integrated ERP solution in a system (Ziemba, Obk Informatyczna, 2013). Security: ERP software mainly focuses to provide full coverage of operation and financial task (Zhang, Shi Liu, 2013). ERP wider scope has more access points, which ultimately increases the risk of data breach in it. Poorly configured ERP software can have more security risk in it and incompatible softwares and application can lead to crashes (Norris Caprioli, 2013). ERP vendors are more focused to put security checks and controls in their latest versions as any data breach will ultimately hamper the productivity of their business (M. Beheshti et al .,2014) Lack of Compliance: This module mainly focuses a certified account in ERP project. Description Candidate 1 Portion of System Computerized A new system containing a database which can store information of 700 customer should be designed for various customer for this giant car company from New Zealand Benefits The system should be designed in such a way that it can store details of more than 10,000 products Servers and Workstations . Kiwi Auto Part Ltd should use ERP system software is as it increases efficiency, promote collaboration, and make accurate forecasts, lower operation cost, and Increases data security. Software Tools Needed Kiwi Auto Part Ltd should use ERP system softwares as it increases efficiency, promote collaboration, make accurate forecasts, lower operation cost, Increases data security Application Software ERP software has following modules like Human Resource Management, manufacturing, Supply chain management, and inventory and purchasing. HRM (Human resource management): This module mainly focuses on various tools like time tracker, timesheet, a database containing employee records and job profile Method of Data Processing An ERP system mainly works with common database and some moderately designed softwares. It gives the flexibility to user to store and retrieve data any time. Output Devices and Implications up gradation, customization, Integration, training and setup that must be taken in account for their better performance. Input Devices and Implications ERP software mainly focuses on the increase use of networks, LANs, hardware upgrades for better performance of the systems. References Abdelaziz, M., Ghazi, A., Anttila, L., Boutellier, J., Lahteensuo, T., Lu, X., ... Valkama, M. (2013, November). Mobile transmitter digital predistortion: Feasibility analysis, algorithms and design exploration. InSignals, Systems and Computers, 2013 Asilomar Conference on(pp. 2046-2053). IEEE. Ahmad, M. M., Cuenca, R. P. (2013). Critical success factors for ERP implementation in SMEs.Robotics and Computer-Integrated Manufacturing,29(3), 104-111. Almajali, D. A., Masa'deh, R. E., Tarhini, A. (2016). Antecedents of ERP systems implementation success: a study on Jordanian healthcare sector.Journal of Enterprise Information Management,29(4), 549-565. Bai, J. (2013, July). Feasibility analysis of big log data real time search based on Hbase and ElasticSearch. InNatural Computation (ICNC), 2013 Ninth International Conference on(pp. 1166-1170). IEEE. Balaji, S., Murugaiyan, M. S. (2012). Waterfall vs. V-Model vs. Agile: A comparative study on SDLC.International Journal of Information Technology and Business Management,2(1), 26-30. Bekele, G., Tadesse, G. (2012). Feasibility study of small Hydro/PV/Wind hybrid system for off-grid rural electrification in Ethiopia.Applied Energy,97, 5-15. Cannon, T. D., Chung, Y., He, G., Sun, D., Jacobson, A., Van Erp, T. G., ... Cornblatt, B. (2015). Progressive reduction in cortical thickness as psychosis develops: a multisite longitudinal neuroimaging study of youth at elevated clinical risk.Biological psychiatry,77(2), 147-157. Castro, M., Expsito-Casas, E., Lpez-Martn, E., Lizasoain, L., Navarro-Asencio, E., Gaviria, J. L. (2015). Parental involvement on student academic achievement: A meta-analysis.Educational Research Review,14, 33-46. Choi, T. M., Chow, P. S., Liu, S. C. (2013). Implementation of fashion ERP systems in China: Case study of a fashion brand, review and future challenges.International Journal of Production Economics,146(1), 70-81. Chou, H. W., Lin, Y. H., Lu, H. S., Chang, H. H., Chou, S. B. (2014). Knowledge sharing and ERP system usage in post-implementation stage.Computers in Human Behavior,33, 16-22. Del Pozzo, W., Li, T. G., Agathos, M., Van Den Broeck, C., Vitale, S. (2013). Demonstrating the feasibility of probing the neutron-star equation of state with second-generation gravitational-wave detectors.Physical review letters,111(7), 071101. Duan, N., Dong, B., Wu, B., Dai, X. (2012). High-solid anaerobic digestion of sewage sludge under mesophilic conditions: feasibility study.Bioresource Technology,104, 150-156. Galy, E., Sauceda, M. J. (2014). Post-implementation practices of ERP systems and their relationship to financial performance.Information Management,51(3), 310-319. Ghosh, D., Ghose, T., Mohanta, D. K. (2013). Communication feasibility analysis for smart grid with phasor measurement units.IEEE Transactions on Industrial Informatics,9(3), 1486-1496. Haddara, M. (2014). ERP selection: the SMART way.Procedia Technology,16, 394-403. Hancock, N. N. (2016).Matrix analysis of electrical machinery. Elsevier. Hejazi, S. S., Halpin, A. L., Biggs, W. D. (2014). Using SAP ERP technology to integrate the undergraduate business curriculum.Developments in Business Simulation and Experiential Learning,30. Johnson, R. A., Wichern, D. W. (2014).Applied multivariate statistical analysis(Vol. 4). New Jersey: Prentice-Hall. Kamel, R. S., Fung, A. S. (2014). Modeling, simulation and feasibility analysis of residential BIPV/T+ ASHP system in cold climateCanada.Energy and Buildings,82, 758-770. Khan, P. M., Beg, M. S. (2013, April). Extended decision support matrix for selection of sdlc-models on traditional and agile software development projects. InAdvanced Computing and Communication Technologies (ACCT), 2013 Third International Conference on(pp. 8-15). IEEE. Laudon, K. C., Laudon, J. P. (2013). Management Information Systems 13e. Li, C., Ge, X., Zheng, Y., Xu, C., Ren, Y., Song, C., Yang, C. (2013). Techno-economic feasibility study of autonomous hybrid wind/PV/battery power system for a household in Urumqi, China.Energy,55, 263-272. Lin, Y., Shi, Y., Burton, R. (2013). Modeling and robust discrete-time sliding-mode control design for a fluid power electrohydraulic actuator (EHA) system.IEEE/ASME Transactions on Mechatronics,18(1), 1-10. Beheshti, H., K. Blaylock, B., A. Henderson, D., G. Lollar, J. (2014). Selection and critical success factors in successful ERP implementation.Competitiveness Review,24(4), 357-375. Mahalakshmi, M. and Sundararajan, M., 2013. Traditional SDLC Vs Scrum MethodologyA Comparative Study.International Journal of Emerging Technology and Advanced Engineering,3(6), pp.192-196. Matzen, M., Alhajji, M., Demirel, Y. (2015). Chemical storage of wind energy by renewable methanol production: Feasibility analysis using a multi-criteria decision matrix.Energy,93, 343-353. Mohammadi, K., Mostafaeipour, A. (2013). Economic feasibility of developing wind turbines in Aligoodarz, Iran.Energy Conversion and Management,76, 645-653. Norris, J. L., Caprioli, R. M. (2013). Analysis of tissue specimens by matrix-assisted laser desorption/ionization imaging mass spectrometry in biological and clinical research.Chemical reviews,113(4), 2309-2342. Ram, J., Corkindale, D., Wu, M. L. (2013). Implementation critical success factors (CSFs) for ERP: Do they contribute to implementation success and post-implementation performance?.International Journal of Production Economics,144(1), 157-174. Richardson, J. W., Johnson, M. D. (2015). Financial feasibility analysis of NAABB developed technologies.Algal Research,10, 16-24. Schott, J. R. (2016).Matrix analysis for statistics. John Wiley Sons. Snyder, R. (2015). ERP Success Factors.ASBBS Proceedings,22(1), 425. Thompson, P. M., Stein, J. L., Medland, S. E., Hibar, D. P., Vasquez, A. A., Renteria, M. E., ... Wright, M. J. (2014). The ENIGMA Consortium: large-scale collaborative analyses of neuroimaging and genetic data.Brain imaging and behavior,8(2), 153-182. Unuakhalu, M. F. (2014). Integrating Risk Management in System Development Life Cycle 1. Verslegers, M., Lemmens, K., Van Hove, I., Moons, L. (2013). Matrix metalloproteinase-2 and-9 as promising benefactors in development, plasticity and repair of the nervous system.Progress in neurobiology,105, 60-78. Zeng, H. B., He, Y., Wu, M., She, J. (2015). Free-matrix-based integral inequality for stability analysis of systems with time-varying delay.IEEE Transactions on Automatic Control,60(10), 2768-2772. Zhang, H., Shi, Y., Liu, M. (2013). H step tracking control for networked discrete-time nonlinear systems with integral and predictive actions.IEEE Transactions on Industrial Informatics,9(1), 337-345. Ziemba, E., Obk, I., Informatyczna, B. S. (2013). Critical success factors for ERP systems implementation in public administration.Interdisciplinary Journal of Information, Knowledge, and Management,8(1), 1-19.

Sunday, December 1, 2019

Should Dangerous Sports Be Banned Essay Example

Should Dangerous Sports Be Banned? Essay Should dangerous sports be banned? Yes! Millions of people play sport every day, and, inevitably, some suffer injury or pain. Most players and spectators accept this risk. However, some people would like to see dangerous sports such as boxing banned. This essay will examine some of the reasons for banning certain sports. Some sports are nothing but an excuse for violence. Boxing is a perfect example. The last thing an increasingly violent world needs is more violence on our television. The sight of two men (or even women) bleeding, with faces ripped open, trying to obliterate each other is barbaric. Other sports, such as American football or rugby, are also barely-concealed violence. Some people argue that the players can choose to participate. However this is not always the case. Many boxers, for example, come from disadvantaged backgrounds. They are lured by money or by social or peer pressure and then cannot escape. Even in richer social groups, schools force unwilling students to play aggressive team sports, claiming that playing will improve the students character (or the schools reputation), but in fact increasing the risk of injury. Even where people can choose, they sometimes need to be protected against themselves. Most people approve of governments efforts to reduce smoking. In the same way, governments need to act if there are unacceptably high levels of injuries in sports such as football, diving, mountaineering, or motor-racing. I accept that all sports involve challenge and risk. However violence and aggression should not be permitted in the name of sport. Governments and individuals must act to limit brutality and violence, so that children and adults can enjoy and benefit from sport. We will write a custom essay sample on Should Dangerous Sports Be Banned? specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Should Dangerous Sports Be Banned? specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Should Dangerous Sports Be Banned? specifically for you FOR ONLY $16.38 $13.9/page Hire Writer

Tuesday, November 26, 2019

Canada In The Twentieth Century essays

Canada In The Twentieth Century essays Every country has a foreign policy. This is what is officially done by a government in its relations with other countries. Many Canadians believe that a truly independent Canada must develop a foreign policy that reflects Canadas national interests. While others hold the view that Canadians should develop a foreign policy based more on global concerns. The goals of foreign policy are to promote sovereignty, social justice, economic growth, and there are many others. I believe that the significant development of a global perspective is necessary to insure our sovereignty and unique identity. Canada has played an important role to reduce toxic gas emissions into the environment. For example, Canada has committed to the Kyoto Accord and has a plan to reduce Carbon dioxide emissions. Canada is concerned about the environmental affects on life around the world. We stress clean air and water; for example the government has created certain rules on more environment friendly cars to be manufactured. Canada has kept guard on the disposal of harmful materials, and wastes produced by nuclear plants around the globe. Canada has constructed national parks to preserve forests, wildlife, and has prohibited development in the area. For instance, Banff and Jasper National parks, and there are many others. The Canadian foreign policy is based on protecting human rights all over the world. We achieve social justice by decreasing poverty in developing countries, and creating more economic opportunities in these countries. For example, Canada doesnt do trade with countries that employ child labour. Canada has committed itself to peaceful democratic changes in developing countries, for instance in Afghanistan, Iraq, and many countries in Africa. Canada has contributed to bring democracy in South Africa, about 10 years ago, in countries such as Namibia, Ethiopia, Angola, Cambodia, and many others. ...

Saturday, November 23, 2019

On The QT

On The QT On The QT On The QT By Sharon Opinions are divided on the origin of the expression on the QT, a slang expression which indicates that the subject under discussion is confidential. Most people agree that its simply an abbreviation of quiet, albeit a strange one, using the first and last letters. However, both the US and the UK claim first ownership of this phrase. US wordsmiths cite that countrys love of abbreviations, as evidenced by OK, PDQ and others, as evidence that on the QT fell into this tradition. The British claim comes via Robert Hendrickson, in The Facts on File Encyclopedia of Word and Phrase Origins. Hendrickson says that on the QT comes from a British ballad in 1870. However, this has been disputed as he provided no evidence for the claim. Back in the US, the Cambridge Jeffersonian of Ohio is reported to have published a vaudeville song from 1879 with the line: She tipples on the strict QT. George Moores A Mummers Wife seems to be the first place that the phrase appears in print. This was published in 1884. The phrase fell out of regular use for a while, then became popular once again as part of the tagline for LA Confidential in 1997: off the record, on the QT and very hush-hush. Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the General category, check our popular posts, or choose a related post below:50 Incorrect Pronunciations That You Should Avoid15 Words for Household Rooms, and Their SynonymsPeople vs. Persons

Thursday, November 21, 2019

Analyzing and contrasting data mining based network intrusion Essay

Analyzing and contrasting data mining based network intrusion detection system - Essay Example The objective of this research is to acquire a better insight about Data Mining-Based Network Intrusion Detection Systems. In this present era the computers are sophistically connected to each other in a form of network. In such networks there is every possibility of intrusion to important data. In order to maintain the integrity, network data has to be secured. Electronic commerce (e-commerce) has made Internet usage most important part in everyone’s life and has become a major source of sending and receiving information. However, providing protection to the computers connected in a network is still a main issue to be tackled. In general, every organization wants their data to be safe and secure from the attackers. Information systems are easily accessible and can be intruded by the hackers over the internet if the networks are insecure. In this thesis, there are some procedures mentions for detecting network intrusions using data mining. This thesis also covers the different types of intrusions and justify how they can be best detected using available data mining tools. Data mining can be proved as a very useful method towards identifying any intrusion that might have taken place. The amount of extraction or hacking of data and intrusions are growing day by day. As a result, new intelligent Intrusion Detection Systems (IDSs) are put in place to mitigate the intrusion and safeguard the data. Intrusion needs to be detected as we cannot stop intrusions but we can minimize them and stop hackers from threats. Declaration I certify that this thesis is carried out in partial fulfillment of the requirements for the degree of Masters in Computer Science, and has no contents copied from any external sources except for those whose references are made with in the text. ---------------------------------- ------------- Mohammed Altaf Ahmed khan Date Table of Contents List of Figures Figure 2.1: Transition from Data to Knowledge (Fayyad, Piatetsky and Smyth, 1996) 10 Figure 3.1 Snort High-Level Processing Stages (Wheeler, 2003)†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦20 Figure 3.2 Bayesian Model Diagram Panda & Patra (2007)†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.25 Chapter 1 Introduction In this age of the Information Revolution, there are obvious advantages that can be reaped from the vast and ever growing Internet Community in the web: 24/7 connectivity; robust e-commerce that simplified business transactions and operations; erasure of geographical separation and distance; and access to a multitude of modern means of communications. Yet, as benefits derived from being part of the Internet community are many to mention, one resounding concern that pervades this virtual world is security. Most, if not all, entities participating and part of the Internet world are on their toes, keeping their eyes over their own virtual place in the Internet. It can be said that SECURITY is one big important word in the Internet today. As of this press time, there are many unscrupulous entities that crowd the Internet and are ready to attack anyone and any site that has vulnerability in its network security setup. Since many e-commerce companies and enterprises depend on the Internet for its survival, it is not a surprise that there is a creation and formulation of different way to protect one’s network. Over the past couple of decades, techniques to secure network through latest technology have gained an importance and have proven to be a necessity to any entity maintaining and securing a network. The need for security has spawned in the creation and design of firewalls, cryptography, authentication and most of all intrusion detection systems. Among these security tools, network intrusion detection system holds a potential as a tool against computer crime. An intrusion detection system can simply be called the process of monitoring and an alyzing the events (ie. the traffic of packets going in and out of the network stream) that occurs in a computer system to enable to detect signs of security problems. Yet, as a network security technology tool, intrusion detecti

Tuesday, November 19, 2019

Aspects of Policing Research Paper Example | Topics and Well Written Essays - 1250 words - 1

Aspects of Policing - Research Paper Example In essence, the same words, "to serve and protect," might be on many police departments' patrol cars, but interpretation is left wide open to the many analysts engaged in the field. Body Traditionally, police officers have been viewed as soldiers engaged in a war on crime. This view has had the detrimental effect of focusing on ineffective strategies for crime control while resulting in a major cause of police violence and civil rights violations. The "war model" inaccurately portrays a ‘search and destroy’ mentality to banish crime, disorder, and the scourge of drugs (Byrne & Pease, 2008). According to DeParis (2000) it does not help that many police departments continue to use a bureaucratic, closed-system approach in an ever-changing and intrusive external environment. Such an environment results in an unstable situation (p. 108). Nevertheless, noteworthy changes in the policing philosophy have resulted in the movement towards community policing. Many feel that this m ovement is the result of police that have not been accountable to the community, but have served status quo interests. Researchers declare that the conversion from traditional policing to a community-oriented approach will be one of the most significant challenges affecting police organizations today (Gilling, 2007). With the help of responsible citizens and progressive police administrators there have been tremendous accomplishments in developing a form of policing that better meets the needs of the community. But Goldstein (2000) complains that the term "community policing" tends to be used indiscriminately to encompass the most ambitious project in policing to the most mundane, without regard for its true meaning. Politicians, administrators and police executives exacerbate the problem by misleading citizens into expectations that community policing will provide instant solutions not only for the problems of crime, disorder, and racial tension but for many of the other acute prob lems that plague the community as well. Of course, the failure of superficial programs with the community-policing label then adds to the frustration of not only the community, but also the police officers involved (Jean, 2007), One reaction in the law enforcement community has been to attempt definition and simplification of the community policing model. This presents a problem for such a complex process as policing. In fact, Goldstein (2000) argues, the field already suffers because so much in policing is oversimplified (p. 72). The criminal justice system has traditionally categorized and defined crime, violence, and disorder into simple convenient terms that act to disguise amorphous, complex problems. Oversimplification places a heavy burden on the police and complicates the police task. Goldstein (2000) explains that the police respond with such equally simplistic terms as "enforcement" and "patrol" in which the community is familiar but does not understand the methods they em brace or their value. Goldstein (2000) is concerned that if community policing is used as just another generic response or simplistic characterization of the police function this truly innovative approach will quickly lose credibility (p. 72) Another concern for police executives making the transition to community policin

Sunday, November 17, 2019

Midsummer Nights Dream by Shakespeare Essay Example for Free

Midsummer Nights Dream by Shakespeare Essay A Midsummer Nights Dream by William Shakespeare frequently explores the complex types of love. Love is timeless subject. It will forever be the theme of much popular entertainment and the source of conflict for many men and women. No one understands the theme of love greater than Shakespeare and therefore I will look at how conflict is developed through love in Midsummer Nights Dream At the start of the play, Shakespeare explores the theme of love through the characters Theseus and Hippolyta. Theseus seduces Hippolyta. I wound you with my sword and one by love The quote shows the conflict caused by love between Theseus and Hippolyta in form of a battle. Shakespeares purpose was to introduce the idea that love involves conflict through this scene. The audience begins to engage with the theme of love as it creates crises to the plot. This idea that love involves conflict is developed when Hermia and Lycander are bought in front of Theseus. Hermia wishes to marry her romantic love Lysander but her father Igneus has power over her as by law and paternal love. Shakespeare presents for us the conflict between eternal and romantic love. The course of true love never went so smooth-Lysander. This quote proves that love brings hard times and conflicts during its timeless life. The audience develops the theme of love and the conflict that can be caused by inter-relation of love. The conflict between relations of love is developed further as Helenas love for Demetrius is not returned to her but to her best friend Hermia. Shakespeare shows how the platonic love between Helena and Hermia suffers due to Helenas obsessive love towards Lysander and Hermias romantic love for Lysander. Sickness is catching, yours would I catch!-Helena to Hermia. The effect of this is that the audience presents himself/herself to believe if one love blooms, the other may suffer. In the middle of the play the conflict between love through reason and blind  love are clearly shown through characters Bottom and Titania. Titania, under the influence of the magic potion symbolizes love at first sight and falls in love with Bottom while Bottom symbolizes love for reason and fails to see why she loves him. Truth, reason, and love keep little company these days Through the quote Bottom describes the conflict which the two types of love have in that blind love masks and hides all reasons of love. Shakespeare shows the nonsense and humor of love at first sight. Conflicts in love in Midsummer Nights Dream are resolved in all happy endings; Theseus marries Hippolyta, 4 nobles married. This is where Shakespeare loses his reality because it is a play. A conflict caused by love lasts for a lifetime in reality but a play must end in with a happy ending as it is purely for entertainment and therefore Shakespeare finishes this way. We can argue that Shakespeare may have done this to show that loves other than reason are more common than reason. The theme of love causes many conflicts. It breaks friendships, paternal love, and romantic love. Even if the love is strong it can be broken. Shakespeare persuades audience that love for reason is less common but it is better for all the right reasons. Shakespeare uses love between characters to develop conflicts throughout A Midsummer Nights Dream

Thursday, November 14, 2019

Comparing the poems Dulce Et Decorum Est and Anthem for Doomed Youth Es

Comparing the poems Dulce Et Decorum Est and Anthem for Doomed Youth, comment on the poet's use of language and poetic technique showing how successful he is in conveying his message. 'Comparing the poems 'Dulce Et Decorum Est' and 'Anthem for Doomed Youth', comment on the poet's use of language and poetic technique showing how successful he is in conveying his message. 'Comparing the poems 'Dulce Et Decorum Est' and 'Anthem for Doomed Youth', comment on the poet's use of language and poetic technique showing how successful he is in conveying his message. Wilfred Owen wrote both the poems 'Dulce Et Decorum Est' and 'Anthem for Doomed Youth' during the First World War. Wilfred Owen was a British poet born in 1893. He entered World War 1 (1914 - 1918) in October 1915 and fought as an officer in the battle of the Somme in 1916 but was hospitalised for shell shock in May 1917. Here he met Siegfried Sassoon, a poet whose anti-war works were in harmony with Owens concerns. Under Sassoon's care, Owen began producing the best work of his short career. His poems are suffused with the horror of battle and are a passionate expression of outrage at the horror and pity for the young soldiers sacrificed in it. Owen was awarded the military cross for serving in the war with distinction. He died one year after returning to battle and one week before the war ended in 1918. I believe that Owen wrote these poems because he wanted to tell people about the horrible things he has seen and been through. Also I believe he wrote them to deliver the truth to the people at home and to the people who were thinking of going to war because it was glorious. I don't think he was telling them not to go to war but to go to war... ...poems have a few differences, which make them contrast with each other. 'Anthem' is describing the funerals/burial of people at home and 'Dulce' is about the death on the battlefield. 'Anthem'is a reflective poem whereas 'Dulce' is very visual and extremely graphic giving it a deeper impact on the reader. 'Anthem' is written as a sonnet because it has 14 lines, 3 quatrains and one rhyming couplet. This immediately gave me the impression that the poem was softer than 'Dulce' (Which is written in free verse) because I tend to associate a sonnet with Romeo and Juliet, which is all about love. In conclusion I think that 'Dulce Et Decorum Est' effectively conveyed Owen's message to the reader because it was much more visually disturbing, and made you feel pity and sympathy for all the thousands of people who die like that in the wars we have had in the past.

Tuesday, November 12, 2019

“Macbeth” by William Shakespeare Essay

The plays of William Shakespeare definitely sustain their ability of staying relevant in today’s contemporary world. This can be seen in the play Macbeth by Shakespeare and the modern version of the play, Macbeth Retold, directed by Mark Brozel. The main issues of the texts include the inversion of the gender roles and how power and greed can take its wretched toll on people’s lives. Women still carry the expectations of being reliant on their husbands and there are certain power-hungry individuals that will do whatever it takes to reach the top of the leader board. These two texts contain various literary techniques such as imagery and sarcasm to support the themes mentioned. Shakespeare’s play, Macbeth, has a considerably interesting viewpoint on the gender roles as the women behave more masculine whilst the men are embodied in an inferior manner. The theme is represented by ‘Lady Macbeth’ who is quite a manipulative character. Lady Macbeth demonst rates the inversion of gender roles when she tells Macbeth to act more manly and asks the spirits to unsex her so she can be a man since she feels the need to compensate for Macbeth’s lack of masculinity. She is also seen to be quite a violent person with cruel intentions which is illustrated in the line, â€Å"I have given suck and know how tender ‘tis to love the babe that milks me- I would, while it was smiling in my face, have pluck’d my nipple from his boneless gums and dash’d the brains out had I sworn as you have done to this† (Act 1, Scene 7, Line 3). The literary technique used here is imagery as a full detailed idea is given of just how much aggression Lady Macbeth possesses to the point where she would brutally murder an innocent baby. The gender roles are reversed once again in the film, Macbeth Retold, focusing particularly on Lady Macbeth’s modern version Ella Macbeth. This is relevant to our time because it is reflecting the authority that women now have. Interestingly though, the play was written in the 17th century where women were expected to be silent and obedient to their husbands so maybe it could be considered that Shakespeare pa ved the way to the liberation of women. In the modern version Ella best demonstrates the theme when she pressures Joe Macbeth, modern version of Macbeth, into killing Duncan who takes the credit for Joe’s hard work as a chef in the restaurant. The evidence that this character illustrates this theme can be seen when she says â€Å"He milks you for everything you’ve got†¦no amount of money covers what you do for him†¦You’re too full of the milk of human  kindness Joe. Thank you, Duncan, for the slap on the back, I’m so very, very grateful†¦It is shaming to hear the truth Joe? What kind of man is it who doesn’t feel humiliated in the position you’re in. what kind of man is that?† The technique that Ella uses is sarcasm, which is shown when she insults Joe’s manliness and she asks him rhetorical questions that she already knows the answer to so she is mocking his intelligence. The theme of the destructiveness of power and greed is ever-present throughout the play, Macbeth. The character Macbeth craves success so much that it gets to the point where he is lead into a paranoid madness. The prophecies made by the witches are what sparked his ambitions for power. Macbeth doesn’t favour committing evil deeds as much as his wife Lady Macbeth but his burning desire for power and progression blinds his better judgement and he kills Duncan. After he has killed Duncan he displays imagery when describing his intentions, â€Å"†¦For mine own good all causes shall give away, I am in blood stepp’d in so far that, should I wade no more, returning were as tedious as go o’er† (Act 3, Scene 4, Line24). In this line Macbeth is making a comparison with his actions to that of wadding through a bloody river which also displays irony as his wicked action is murder which is associated with blood. He suggests that it’s impossible to stop onc e a man commits murder for their advantage. It is visible that Macbeth is becoming addicted to killing as it gives him a sort of ‘boastful high’ but this is short lived as his guilt sends him crazy and inevitably gets him killed as well. The same happens to Joe Macbeth in Macbeth Retold. The theme of power and greed is expressed in Macbeth Retold which is the retelling of the original Shakespeare play, Macbeth, but it is still seen everywhere from the media to the school ground as everyone wants to be at the top of the food chain. This is still relevant in today’s world through the businessmen and women who sabotage their ways towards a higher career position. The character that best demonstrates this theme is Joe Macbeth when he murders Duncan, and then Billy who he sees as a new threat, he does whatever it takes to reach his goal but ends up becoming engulfed in paranoia to the extent where he mistreats those who respected him. After a heated discussion Ella says to Joe â€Å"Men don’t run over by buses† which he then replies with, â€Å"No†. In the movie the technique used is the silence as the camera pans across their faces. This shows the suspense and tension present in the scene as they’d  just decided to go ahead with the plan to kill Duncan and get the restaurant. To conclude, William Shakespeare’s play Macbeth has endured the test of time and proven itself to still be relevant in our current day through the discussion of the themes of gender roles and power and greed. Both of these themes appear in the original version of the play, Macbeth, and a modern version, Macbeth Retold. The themes were presented in many ways in the texts through the use of literary techniques. In the original play, imagery and irony were used and in the modern film, sarcasm and suspense were used.

Saturday, November 9, 2019

The Compare and Contrast Microsoft DOS with UNIX

As is suggestive of its name, an operating system (OS) is a collection of programs that operate the personal computer (PC). Its primary purpose is to support programs that actually do the work one is interested in, and to allow competing programs to share the resources of the computer. However, the OS also controls the inner workings of the computer, acting as a traffic manager which controls the flow of data through the system and initiates the starting and stopping processes, and as a means through which software can access the hardware and system software. In addition, it provides routines for device control, provides for the management, scheduling and interaction of tasks, and maintains system integrity. It also provides a facility called the user interface which issues commands to the system software. Utilities are provided for managing files and documents created by users, development of programs and software, communicating between users with other computer systems and managing user requirements for programs, storage space and priority. There are a number of different types of operating systems with varying degrees of complexity. A system such as DOS can be relatively simple and minimalistic, while others, like UNIX, can be somewhat more complicated. Some systems run only a single process at a time (DOS), while other systems run multiple processes at once (UNIX). In reality, it is not possible for a single processor to run multiple processes simultaneously. The processor of the computer runs one process for a short period of time, then is switched to the next process and so on. As the processor executes millions of instructions per second, this gives the appearance of many processes running at once. User programs are usually stored on a hard disk and need to be loaded into memory before being executed. This presents the need for memory management, as the memory of the computer would need to be searched for a free area in which to load a users program. When the user was finished running the program, the memory consumed by it would need to be freed up and made available for another user when required (CIT). Process scheduling and management is also necessary, so that all programs can be executed and run without conflict. Some programs might need to be executed more frequently than others, for example, printing. Conversely, some programs may need to be temporarily halted, then restarted again, so this introduces the need for inter-program communication. In modern operating systems, we speak more of a process (a portion of a program in some stage of execution (CIT, 3)) than a program. This is because only a portion of the program is loaded at any one time. The rest of the program sits waiting on the disk until it is needed, thereby saving memory space. UNIX users speak of the operating system as having three main parts: the kernel, the shell and the file system. While DOS users tend not to use the term kernel and only sometimes use the term shell, the terms remain relevant. The kernel, also known as the â€Å"Real Time Executive†, is the low-level core of the OS and is loaded into memory right after the loading of the BIOS whenever the system is started. The kernel handles the transfer of data among the various parts of the system, such as from hard disk to RAM to CPU. It also assigns memory to the various system-level processes that occur whenever the computer does anything. The kernel is also responsible for scheduling the CPU†s operations and for letting the shell access the CPU (PC Mag, 1). The shell is the visible user interface to the OS and is a program that loads on top of the operating system and offers users commands that lets them access the OS. Strictly speaking, the shell is an input utility that offers access to the operating system. Technically speaking, the shell, being a separate program, is not a part of the OS at all. In the UNIX world a number of shells are available, among them the Korn shell, the C-shell, the Bourne shell and the Bourne Again shell (yes, really). In DOS, the standard shell is COMMAND. COM, again nothing more than a program. As different versions of command. com came with different versions of DOS, each added new commands and new things that could be done by the user. For example, DOS 4†³s COMMAND. COM added theP switch to DEL to verify each deletion, and DOS 5†³s COMMAND. COM provided the ability to sort the output of the DIR command. An acronym for disk operating system, the term DOS can refer to any operating system, but is most often used as shorthand for MS-DOS. Originally developed by Microsoft for IBM, MS-DOS was the standard operating system for IBM-compatible computers. The initial version of DOS was somewhat uncomplicated and resembled another operating system called CP/M. Subsequent versions have become increasingly sophisticated, however DOS remains a 16-bit operating system without support for multiple users or multitasking. The earliest forms of DOS were crude and utilized only a few commands, but as computers became more advanced, so did DOS. By keeping up with technology, DOS was implemented into more â€Å"user friendly† operating systems. However, as more sophisticated operating systems were released, DOS became less important. Today, cyberpunks involved with the latest OS trends joke that DOS stands for ‘Dad†s Operating System†Ã¢â‚¬  (Comerford, 23). In 1980, IBM asked the Microsoft Corporation to produce the operating system for its first personal computer, the IBM PC. Prior to this, a company called Seattle Computer Products had sold an operating system called 86-DOS to Microsoft. Microsoft hired the author of 86-DOS, Tim Paterson, in April of 1981 to modify the system, and renaming it MS-DOS (Microsoft Disk Operating System), it was released with the IBM PC. Thereafter, most manufacturers of personal computers licensed MS-DOS as their operating system (Brittanica, 1). Limitations of the early PC†s hardware were a big influence on MS-DOS. Although the 8088 model computer had a 1Mb address space, IBM decided to allocate the first 640K of this to RAM, and the rest to ROMs, video boards and other things. Consequently, MS-DOS was set up to support programs whose maximum size was 640K. Version 1. 0 of DOS was released along with the IBM PC in August 1981. It occupied 12K of the systems 640K of memory, was somewhat compatible with CP/M and, much like CP/M, supported only a single directory. By contrast, even the first version of UNIX had a full hierarchical file system. In addition, Version 1. 0 supported only a 160K single sided 51/4-inch floppy diskette. Version 1. 1 was released by Microsoft in October 1982 and supported double sided 320K diskettes. Aside from fixing some bugs, this release was similar to Version 1. 0. Releases such as 1. 1, in which the number to the left of the decimal point is the same as the previous version depict relatively minor changes from the previous release. By contrast, Version 2. 0 was largely a new system. In March 1983, IBM introduced the PC/XT, its first personal computer with a hard disk. It came with a new variant of MS-DOS, Version 2. 0. In this version, Microsoft incorporated many ideas from the UNIX system for which it was also a vendor. For example, incorporating minor changes, the MS-DOS file system was taken largely from UNIX. In addition, the shell was improved, and Version 2. 0 supported a new floppy diskette format, the 360K as well as user installable device drivers, print spooling, system configuration and memory management. At this point, MS-DOS was established as the dominant operating system in PC market. In August 1984, IBM released its first 286 chip based PC, the PC/AT. The PC/AT supported memory up to 16 Mb and had the ability to run multiple programs at once. However, the version of MS-DOS that shipped with the PC/AT was 3. 0, which supported neither of these. Rather, it ran the PC/AT in a mode that simulated the 8088, only faster. Since the PC/AT came with a 1. 2Mb disk drive, battery backup clock, and configuration information in the CMOS, support for these devices was added. What's more, hard disks larger that 10Mb were now supported. In addition, the command processor (shell) was removed from the operating system and made into a separate program. In November 1984, 3. 0 was replace by 3. 1 which provided the first support for networking. In 1987, IBM came out with the PS/2 line of PC which shipped with MS-DOS 3. 3, providing support for both 720K and 1. 44Mb 31/3 floppy disk drives. With Version 4. 0, Microsoft added the DOS shell, a menu driven shell rather than the previous keyboard driven ones. In addition, it now provided support for hard drives larger than 32 Mb. A major new release, MS-DOS Version 5. 0 was shipped in April 1991. Although this was the first version that made any serious use of the extended memory, it still had the restrictions that programs could not exceed 640K. However, it had the ability to locate most of MS-DOS itself in extended memory, so about 600K of the lower 640K was now available for user programs. Version 5. 0 also came with a useful HELP utility, to aid new users. For the first time, MS-DOS was sold in stores to the public (previous versions were only sold to computer vendors who delivered them with their machines) (CIT, 1-3). The MS-DOS 6 family provided more memory management for applications such as Microsoft Windows. In addition, newer utilities were provided for disk-defragmentation, file compression, file backups and anti-virus checking. Other variations of MS-DOS exist, such as PC-DOS by IBM, DOS-V, Dr. DOS and others. There is even a FREE DOS available on the Internet as an MS-DOS clone. Although it can still be found on many computers, MS-DOS is technically an obsolete operating system, being replaced by Microsoft Windows. For personal computers, MS-DOS is a single user, single tasking operating system. Single user means only one person uses the computer at a time. Single tasking means that it essentially runs one application program at a time, and has no inherent support for running more than one application program simultaneously (CIT, 2). If we want to look at the basic DOS operating system itself, there is no need to look further than three system files, command. com, Io. sys and (in DOS6. x and earlier) Msdos. sys. These files are crucial in DOS versions up to 6. 22. Io. sys represents the lowest level of the interface and contains the routines necessary for interfacing the OS with the system†s BIOS. It implements MS-DOS as seen by the hardware and has default drivers for console display and keyboard, printer, serial communications, clock, and a boot disk drive. Msdos. sys handles the higher-level routines such as converting commands from applications into instructions for Io. sys. It implements MS-DOS as seen by application programs. It supports file and record management, memory management, character device input and output, execution of other programs, and access to a real-time clock (CIT, 3). Both of these files are in the root directory, and both are hidden from view by default. The idea is that you are not suppose to see them, so that you don†t do anything destructive to them (such as deleting them). They are also read-only so that they can†t be deleted accidentally. Command. com is the shell program which interprets user commands, presents the shell prompt, and contains a set of internal commands. The rest of MS-DOS consists of a number of utility programs. Although DOS had cornered the PC market, UNIX was still dominant on the larger workstations. The birth of UNIX in 1969 provided the world with its first modern operating system. An interactive multi-user operating system, UNIX was initially developed by programmers for their own use. Working for Bell Laboratories, Ken Thompson and Dennis Ritchie created UNIX as an operating system for the PDP-7 computer. Designed as a simplification of an operating system named Multics, UNIX was developed in Assembly language, a primitive computer language specific to one type of machine (Osiris, 1). However, Thompson developed a new programming language â€Å"B† which Ritchie enhanced to â€Å"C†, and in 1973 this was used to rewrite UNIX which lended the OS portability (Linux Intl. , 1). The original design philosophy for UNIX was to distribute functionality into small parts, the programs (Theochem, 1). In this way, functionality could be achieved by combining the small parts (programs) in new ways. Moreover, if a new program were to appear, it could be integrated into the system. UNIX was slow to catch on outside of academic institutions but soon was popular with businesses as well. The first five versions were part of an internal research effort of Bell Labs, and it was not until the sixth version, called UNIX Timesharing Sixth Edition V, that UNIX was widely distributed (Osiris, 1). Relatively recent developments are graphical interfaces (GUI) such as MOTIF, X Windows and Open View. UNIX has two major versions. One, jointly developed by UNIX Systems Laboratories (USL) and by AT&T researchers together with Bell Labs, generically known as System V, is the commercial version and is the most widely distributed by major manufacturers. The second, developed by the University of Berkley and Berkley Software Distribution (BSD), is the educational version and is completely focused on research. The USL version is now on its fourth release, or SVR4, while BSD†s latest version is 4. However, there are many different versions of UNIX besides these two. The operating system has been licensed to several manufacturers who in turn developed their own versions of UNIX, based on System V or BSD, but adding new characteristics. Most versions of UNIX developed by software companies are derived from one of the two groupings and, recent versions of UNIX actually incorporate features from both of them. However, UNIX has had an unregulated history with over 200 versions (Berson, 16) existing today. The UNIX system is made up of three primary components, the kernel, the shell, and the utilities (which includes the file system). The central part of the OS, the kernel is the first program to start when the system is turned on and the last program to do anything when the system is halted. In addition to scheduling tasks, it manages data/file access and storage, enforces security mechanisms and performs all hardware access. The name â€Å"KERNEL† represents the fact that it is a program designed as a central nucleus, around which other functions of the system were added. The heart of the operating system, it not only interacts directly with the system†s hardware, but presents each user with a prompt, interprets commands typed by a user, executes user commands and supports a custom environment for each user. The two most common shells are the Bourne shell, default for the System V, and the C-shell used mainly with the BSD version (Osiris, 1). The utilities consist of file management (rm, cat, ls, rmdir, mkdir), user management (passwd, chmod, chgrp), process management (kill, ps) and printing (lp, troff, pr).

Thursday, November 7, 2019

I love you Essays

I love you Essays I love you Essay I love you Essay Worst Nightmare Dreams seem so real sometimes that you will wake up out of your sleep Just to make sure they arent real. Nightmares are the ones that really make you do it though. They are so scary. You can have a nightmare about a monster, someone dying, or maybe even somebody breaking into your house. I have had plenty of nightmares, but there is one that I really want to talk about. My all-time worst nightmare was my whole family dying. It was the scariest thing that has ever happened. Luckily it was Just a dream though. One night I was sleeping and I started to dream that me and my whole were going on a vacation in an airplane. I dont even know where we were going. We were flying on a private plan so we were all playing board games and Just laugh and having a good time. It was one of the best times because for the first time since I was little my WHOLE family was together. My family and I were so anxious to get where we were going. We were flying over the ocean and the plane started to rock. The pilot came on the loud speaker and said he was having technical difficulties, but everything would be okay. My family tried no to panic, but nobody likes to hear that Then the oxygen masks fell and the pilot asked us to place them on our faces. Everyone was panicking and I started to cry because I dont like scary situations. My mom and Dad were trying to comfort me but it wasnt working. All of a sudden the plane started rapidly going down. Then BOOM, we crashed! We crashed in to the water. All I remember is being the only one alive and the plane was in pieces. My family member were all dead, every single one of them, I was freaking out. I didnt know what to do. I was in the middle of the ocean with no way to call anyone, no boats around, no food or anything to drink, and I had no life Jacket all I could do was hold on to a piece of the plane. At that point, I woke up because it seemed so real. That was the worst nightmare Vive ever had because my family means the world to me. I cant lose them all at once. Im so glad it was Just a nightmare because I would be lost without my family. Nightmares are so scary. I never want to have another one. I love you By evocable 234

Tuesday, November 5, 2019

Rumble in the Jungle

Rumble in the Jungle On October 30, 1974, boxing champions George Foreman and Muhammad Ali faced off in Kinshasa, Zaire in â€Å"the Rumble in the Jungle†, an epic match widely recognized as one of the most important sporting events in recent history. The venue, the politics of the two fighters, and the efforts of its promoter, Don King, made this heavy-weight championship into a fight over competing ideas of black identity and power. It was a multi-million dollar anti-colonial, anti-white dominance exhibition, and one of the grandest spectacles of Mobutu Sese Seko’s long reign in the Congo. The Pan-Africanist versus the All American The â€Å"Rumble in the Jungle† came about because Muhammad Ali, the former heavy-weight champion, wanted his title back. Ali opposed the American Vietnam War, which he saw as another manifestation of white oppression of other races. In 1967, he refused to serve in the US Army and was found guilty of draft evasion. In addition to being fined and jailed, he was stripped of his title and banned from boxing for three years. His stance, though, earned him the support of anti-colonialists world-wide, including in Africa. During Ali’s ban from boxing, a new champion emerged, George Foreman, who proudly waved the American flag at the Olympics. This was a time when many other African-American athletes were raising the black power salute, and white Americans saw Foreman as an example of powerful, but unthreatening black masculinity. Foreman supported America, because he himself had been lifted out of grinding poverty by governmental programs. But for many people of African descent, he was the white man’s black man. Black Power and Culture From the start the match was about Black Power in more ways than one. It was organized by Don King, an African-American sports promoter in an era when only white men managed and profited from sporting events. This match was the first of King’s spectacle prize fights, and he promised an unheard of $10-million-dollar prize purse.   King needed a wealthy host, and he found it in Mobutu Sese Seko, then leader of Zaire (now known as the Democratic Republic of the Congo). In addition to hosting the match, Mobutu brought in some of the most renowned black musicians in the world at that time to perform in a massive three-day party to coincide with the fight. But when George Foreman was injured in training, the match had to be postponed. All those musicians could not postpone their performances, though, so the concerts ended up being held five weeks before the fight itself, to the disappointment of many. Still the match and its fanfare were a clear statement about the value and beauty of black culture and identity. Why Zaire? According to Lewis Erenberg, Mobutu spent   $15 million dollars on the stadium alone. He got assistance, reportedly from Liberia, for the music concerts, but the total sum spent on the match is equal to at least $120 million dollars in 2014, and probably far more. What was Mobutu thinking in spending so much on a boxing match? Mobutu Sese Seko was known for his spectacles with which he asserted the power and wealth of Zaire, despite the fact that by the end of his rule, most Zairians were living in deep poverty. In 1974, though, this trend was not yet as evident. He had been in power for nine years, and during that time Zaire had witnessed economic growth. The country, after initial struggles, appeared to on the rise, and the Rumble in the Jungle was a party for Zairians as well as a massive marketing scheme to promote Zaire as a modern, exciting place to be. Celebrities like Barbara Streisand attended the match, and it brought the country international attention. The new stadium gleamed, and the match drew favorable attention. Colonial and Anti-Colonial Politics At the same time, the very title, coined by King, â€Å"the Rumble in the Jungle† reinforced images of Darkest Africa. Many Western viewers also saw the large images of Mobutu displayed at the match as signs of the cult of power and sycophantism they expected of African leadership. When Ali won the match in the 8th round, though, it was a victory for all those who had seen this as a match of white versus black, of establishment versus an anti-colonial new order. Zairians and many other former colonial subjects celebrated Ali’s victory and his vindication as the heavy weight champion of the world. Sources: Erenberg, Lewis A. â€Å"Rumble in the Jungle†: Muhammad Ali vs. George Foreman in the Age of Global Spectacle.Journal of Sport History  39, no. 1 (2012): 81-97. https://muse.jhu.edu/  Journal of Sport History 39.1 (Spring 2012) Van Reybrouck, David. Congo: The Epic History of a People. Translated by Sam Garrett. Harper Collins, 2010.   Ã‚   Williamson, Samuel. Seven Ways to Compute the Relative Value of a U.S. Dollar Amount, 1774 to present, MeasuringWorth,  2015.

Sunday, November 3, 2019

Creativity in a Business Context Report '' set up a new uk events Essay

Creativity in a Business Context Report '' set up a new uk events managament company'' (motivation, ledrship and pay) - Essay Example It is true that skilled and experienced employees can be considered as important assets of an organization. Employee motivation can be considered as an important aspect that needs to be considered by an organization. Effective employee motivation can enhance the entire workplace performance as well as business performance of an organization. An organization can ensure effective employee motivation through significant leadership style of the organizational leader. In addition to this, the Royal Planner is also suffering from the workplace conflicts that have been developed due to the inadequate compensation distribution process. Several employees within the organization are trying to leave the organization due to lack of motivation and unequal compensation distribution issue. This essay will try to investigate the problem. Moreover, the essay will discuss about the problems that are facing by the organization. It is highly important for the organization to adopt and implement an effec tive creative problem solving model in the business operation process to overcome the process. Lastly, the organization will evaluate the usefulness of the theories of creativity in supporting the programme of recommended work. It is highly important for Royal Planner to identify the issues and problems that are affecting the business performance of the organization. The organization is facing several workplace related issues. Lack of employee motivation, inadequate payment distribution and poor leadership quality affected the business performance of Royal Planner. Parnes-Osborn’s CPS model and technique can be implemented in order to investigate the problems and issues. First of all it is highly important to identify the real issues (Abott, 1988, pp.65). It will help the researcher to adopt and implement effective and appropriate CPS Model that can help the organization to overcome the recent issues. It is clear from the above discussion

Thursday, October 31, 2019

Statistical analysis by michael cummins Essay Example | Topics and Well Written Essays - 1000 words

Statistical analysis by michael cummins - Essay Example ested whether there are significant differences among the overall job satisfaction of three departments, namely, Human Resources, Information Technology, and Administration. The results demonstrate that there is no significant difference among the three categories (F=1.74, p>.05). This means that they have more or less equal levels of overall job satisfaction. When tested by position, the results indicate that there is a significant difference between the two groups of full-timers and part-timers, with part-timers yielding a higher overall satisfaction level (t=2.34, p.05). This means that the three groups have more or less equal levels of overall job satisfaction. Gender. The results for gender that indicate no significant difference between the two gender groups are not supported by literature. The review of literature suggests that men are more satisfied at the workplace than women, mainly because of unequal treatment in the workplace. However, with work conditions being equal, women tend to be more satisfied at work than their male colleagues (www.coe.iup.edu). Age. A review of the relevant literature shows that most of the age-job satisfaction studies have concluded that there is some association between employee age and job satisfaction. Gibson and Klein (1970) have demonstrated an increase in satisfaction with age over all tenure levels in their sample. They discussed the age-satisfaction relationship in terms of changing needs, a mellowing process, and dynamic cognitive structures related to age. Siassi et al. (1975) presented higher levels of job satisfaction in workers over 40 than in those under 40, regardless of the

Tuesday, October 29, 2019

Business plan Essay Example | Topics and Well Written Essays - 1000 words

Business plan - Essay Example Quality performance in the organization is also aimed at improving the overall performance of the company. If it is performing well, this entails that its productivity also increases. This will help the organization to operate viably in the long run. This will also help the company to attract more customers which can positively increase its market share. Performance management Performance management is defined as â€Å"an approach to managing employees which is concerned with planning employee performance, facilitating the achievement of work related goals and reviewing performance and these are seen as methods of motivating the workers in order to achieve their full potential in line with the organisation’s objectives.† (Spangenberg, 1994 as cited in Swanepoel, 1998). At Disney Restaurant, performance management will be an ongoing process which will involve planning, managing, reviewing, rewarding and development of performance of the employees. The aim of this particu lar strategy is to establish the level of performance of the employees. This will also help the management to implement measures that are designed to improve the performance of the employees. ... ewards and incentives can be used to motivate the employees to put optimum effort in their performance so that they can positively contribute to the productivity of the organization. At Disney Restaurant, this will be achieved through the use o a performance appraisal system. Basically, performance appraisal is a formal and systematic method that is used to investigate the job relevant strengths and weaknesses of the employees and it is also used to develop the performance of the workers (Swanepoel, 1998). The major aim of performance appraisal is to improve the performance of the employees and this method will be used to gather information about the employees who can be considered for rewards and incentives. This strategy of offering rewards and incentives is very effective in as far as performance improvement of the employees is concerned. If the employees are aware that they will get rewards from their outstanding performance, it can be seen that they will also put optimum effort in their work. This will also motivate other employees to work hard in their assigned tasks since they will also be anticipating to get rewards from their handsome work in the company. Daily management In order to effectively manage the employees as well as their activities at Disney Restaurant, the management will try to interact with the workers on a daily basis. An open communication channel will be implemented in the organization where the employees and their managers will constantly interact on a daily basis. One important aspect that ought to be taken into consideration by the management is to give feedback to the employees so that they know if they are performing within the expected standards in the organization. The managers should give the employees certain tasks and they will

Sunday, October 27, 2019

Development of Controlled Drug Delivery Systems (CDDS)

Development of Controlled Drug Delivery Systems (CDDS) 1.1 CONTROLLED DRUG DELIVERY SYSTEMS (CDDS) Now a day’s on the development of Novel drug delivery systems (NDDS) marked consideration has been focused. The method of drug delivery to the site of action shows a significant effect on its efficacy. It leads to the development and evolution of novel drug delivery systems that enhanced performance of potential drug molecules. Novel drug delivery systems play a key role in pharmaceutical research and development. Since when compared new chemical moiety the developmental cost and time required for introducing NDDS is relatively low. Oral route remains one of the most ‘natural’ routes of drug administration and has seen remarkable accomplishments in the last couple of decades towards optimization of oral delivery of drug molecules. Oral ingestion is one of the oldest and most extensively used routes of drug administration. They provide an effective method of obtaining systemic and local effects. Drug delivery describes a process whereby a therapeutic agent is administered to the body in a controlled manner. The product’s commercial and clinical value, product differentiation can be improved by developed drug delivery technologies. These advanced technologies serve as an advanced resource to outreach the competition. By simplifying the administration and dosing regimen drug delivery technologies make medicine more acceptable and convenient to a patient. Any drug molecule by using Novel drug delivery system (NDDS) can get a ‘new life,’ and thus improving the competitiveness, patent life and market value. Among different NDDS present in the market, the major share in the market is hold by the oral controlled release systems because of its greater benefits of patient compliance and ease of administration. The development of novel and highly versatile delivery systems and osmotic drug delivery systems are the major contribution in oral NDDS. Basically, there are three novel modes of drug delivery, i.e. Targeted delivery, Modulated release and Controlled release. Targeted delivery refers to the administration of a drug carrier systemically in order to deliver drug to the specific type of cells, tissues or organs. Modulated release implies use of a drug delivery device that releases the drug under controlled environmental conditions, bio feedback, sensor input or an external control device at a variable rate. Controlled release refers to a specific device that delivers the drug at specific release profiles or at a predetermined rate into the patient body. 1.1 CONTROLLED DRUG DELIVERY SYSTEMS (CDDS) The nature of the controlled release dosage form is such that the release is determined by the design of the system and the physiochemical properties of the drug and is independent of the external factors or the microenvironment in which the dosage form is placed. These products typically provide significant benefits over immediate-release conventional dosage formulations. Optimum therapy with repetitive administration of conventional dosage forms (e.g. injectables, liquids or tablets) can classically be pursued by dosage scheduling. The aim of this process is to maintain drug concentration in a therapeutic range, above the minimum effective concentration and below the toxic concentration. Thus CDDS avoids the undesirable saw tooth characteristics of the plasma concentration vs time profiles of the conventional drug products. A diagrammatic illustration of controlled versus conventional dosage delivery is shown in Figure-1. Fig 1.1 Plasma Time profile of controlled drug release and conventional release The plasma concentration of the drug reaches a maximum (crest) with conventional dosage forms and then decrease (trough) at the point where repeated administrations becomes necessary to maintain the plasma drug concentration. Very often the initial concentration is above the therapeutically effective level that may increase the risk of side effects. Conventional dosage forms can thus result in a drug regimen in which the drug concentration oscillates between alternating periods of overdose and inefficiency. The delivery of drug at controlled rate over an extended period of time is represented mathematically: Rate in = Rate out = Ke x Cd x Vd Where Cd is the desired drug level, Vd is the volume of distribution and Ke rate content for drug elimination from the body. Added to this, the high cost of development of new, safe, specific and effective drug molecule is prohibitive and developing nations virtually cannot afford such integrated multi-group cost intensive drug development ventures. Therefore, many pharmaceutical industries and drug research institute oriented their efforts to develop pre-programmed unattended delivery of drug at a rate and for a period to meet and achieve the therapeutic need. These systems are coined as Controlled drug delivery systems Table 1.1 Classification of oral controlled release systems depending on mechanism of Release 3 (vyas etal,2002) 1.1.1. ADVANTAGES OF CONTROLLED RELEASE PRODUCTS 4 As controlled release dosage form are slightly expensive than conventional formulations, they cannot be justified unless they offer come clinical or practical advantages given below: Reduction in dosing frequency More uniform effect Reduced fluctuation in steady levels Increased safety margin of high potency drugs Improved patient convenience and compliance Reduced in total amount of dose administered Avoidance of night time dosing Reducing of GI irritation and other dose related side effects and Reduction in health care cost. 1.1.2.DISADVANTAGES OF CONTROLLED RELEASE PRODUCTS 4 However, controlled drug delivery systems also have some disadvantages. They include, High cost; Poor systemic availability; Unpredictable and often poor invitro-invivo correlation; Possibility of dose dumping; Dosage adjustments potential is reduced; First pass clearance potential is increased; In case of hypersensitivity reactions, toxicity or poisoning drug retrieval is difficult; Effect of oral dose depends on Mean Residence Time. To control or change the drug release from a dosage form there will be a number of design options. Most of the per oral controlled release dosage forms comes under the category of osmotic, matrix or reservoir systems. The polymer matrix contains embedded drug in matrix systems in which the release occurs by partitioning of drug into the release medium and polymer matrix. In case of reservoir systems a rate controlling membrane is surrounded and coated around the drug core. But, drug release from conventional controlled systems i.e., reservoir and matrix systems is affected by various factors like presence of food, pH and different physiological factors. In case of osmotic systems the drug is delivered based on the principles of osmotic pressure. The drug release from this system doesn’t depend on the pH and various physiological parameters and thus by optimizing the drug and systems properties the release characteristics can be modulated. 1.2. OSMOTIC DRUG DELLIVERY SYSTEMS – A REVIEW 1.2.1. HISTORICAL BACKGROUND In 1955 Rose and Nelson utilized the principles of osmotic pressure in drug delivery for the first time. They described two systems; one that delivered 0.02 ml/day for 100 days and another that delivered 0.5 ml/day for 4 days, both for use in Pharmacological research. In the 1970s, Higuchi and Leeper proposed a series of variations of the Rose-Nelson pump5. Theeuwes further modified the Rose-Nelson pump and developed a system. Small osmotic pumps of these forms are sold under the trade name ALZET (Alza Corp., CA). The device has a volume of approximately 170Â µl, and the normal delivery rate is 1Â µl/hr. A major milestone was achieved in 1974 with the description by Theeuwes and Alza’s co-workers of a tablet design composed of a compressed tablet-core surrounded by a semi permeable membrane with a single orifice, so-called Elementary osmotic pump (EOP). This design adaptation for human use was conveniently processable using standard tabletting and coating procedures and equipment. The first two products indomethacin, Osmosin6 and phenylpropanolamine, Acutrim TM6 were launched in the 1980s. Oral osmotic drug delivery system (OODS) development continued with two new OODS designs, the controlled-porosity osmotic pumps (CPOP) and the push-pull osmotic pumps (PPOP). The first of these was the CPOP, which was designed to decrease the risk of extremely localized drug-induced irritation at the site close to the orifice. In the 2000s, a new drug product based on OODS technology was formulated to deliver methylphenidate to children (above the age of 6 years) with attention-deficit hyperactivity disorder (ADHD). These delivery systems were based on a new design, the push-stick osmotic pumps (PSOP), which combined immediate and sustained drug release phases. The drug release from this system doesn’t depend on the pH and various physiological parameters and thus by optimizing the drug and systems properties the release characteristics can be modulated. In the last few years more number of patents are granted on these oral omotic drug delivery systems. These systems has ability to improve therapeutic agents clinical profile and so they are becoming one of the most attractive technologies today. Osmotically controlled oral drug delivery system for the controlled delivery of active agents follows osmotic pressure principle. For the controlled drug delivery osmotic devices are most assured strategy based systems. Among the controlled drug delivery systems these are most reliable systems. Osmotic systems could be used in the form of implantable devices or oral drug delivery systems. Osmotic pump tablet (OPT) generally consists of a core including the drug, an osmotic agent, other excipients and semi-permeable membrane coat. 1.2.2. THEORY Osmosis can be defined as spontaneous movement of a solvent from a solution of lower solute concentration to a solution of higher solute concentration through an ideal semi permeable membrane, which is permeable only to the solvent and impermeable to solute. The pressure applied to the higher-concentration side to inhibit solvent flow is called osmotic pressure8. Osmotic pressure is a colligative property, which depends on concentration of solute that contributes to osmotic pressure. Solutions of different concentrations having the same solute and solvent system exhibit an osmotic pressure proportional to their concentrations. Thus a constant osmotic pressure, and thereby a constant influx of water can be achieved by an osmotic delivery system that results in a constant zero order release rate of drug8. PRINCIPLE OF OSMOSIS An osmotic system releases a therapeutic agent at a predetermined, zero order delivery rate based on the principle of Osmosis, which is movement of a solvent from lower concentration of solute towards higher concentration of solute across a semi-permeable membrane. When osmotic system is administered, from the one or more delivery ports the drug that contain suspension or solutions is pumped out of the core due to the hydrostatic pressure developed by the imbibition of water in to the core osmotically through the semi-permeable membrane. By the water influx through semi-permeable membrane the delivery of drug from this system can be controlled. Osmotic pressure is directly proportional to temperature and concentration and the following equation describes the relation between them: ÃŽ   = ØcRT where OP = osmotic pressure, ÃŽ   = osmotic coefficient, c = molar concentration, R = gas constant, T = Absolute temperature. OSMOTIC PUMPS Osmotic pump is a new delivery device, which delivers drugs or other active agents at a controlled rate by the principle of osmosis. Control resides in the water permeation properties of the formulations Table: 1.2 Examples of some marketed band of Osmotic drug delivery system7 DEPARTMENT OF PHARMACEUTICAL TECHNOLOGY, SVCPPAGE 1