Monday, December 30, 2019
REFLECTIVE ACCOUNT - 4916 Words
REFLECTIVE ACCOUNT. Unit 1- 1.1, 1.2-This is a reflective account of the things I have done, experience and knowledge I have gained throughout the assessor s course mainly during the process of assessment. First, I would like to describe the definition of assessment, its key concepts, stages to show the knowledge and understanding I have gained throughout the course. An assessment is a pre-agreed formal session with the learner. Assessment is judging performance against an agreed standard and is also a way of finding out if learning has taken place. It enables yo assessor to ascertain if learner has gainedâ⬠¦show more contentâ⬠¦d) Authencity:- There should be no doubt that the evidence is genuine and has been produced by the learner. e)Currency:- The evidence can prove that the learner is up to date on current methods, skills and knowledge in the chosen vocational area. Unit 2, 1.1, unit 3, 1.1,1.2,1.3- I have also learned and familiarised myself with different methods of assessment that can be used to assess competence and knowledge. They are namely: Observation of performance in the work environment and simulated environments- used in practical situation in work environment where a learner demonstrates their competence (natural performance) whilst learners are being observed. Simulation-this is similar to observation but a simulated activity is used rather than natural performance to assessed learners. Simulation is used when it has not been possible to carry out a task. Examining products of work- assesment is done on the culmination of learner s training, e:g certificates, health and safety reports, memos, checklist for patiaent care, letters, charts. Questioning the learner, witness testimony: any other people who has been involved with the learner s progress can write a statemen to show how the learner has successfully covered relevant aspects of the courset, learners personal statement: it is a reflective account where learners explains the thinking behind their decision to take certain approach or why they decided to change aspects of a task or activity ,Show MoreRelatedReflective Account of ....10187 Words à |à 41 PagesApart from that I can analyze to my knowledge, skills and practice as regards in infection control and can displays the credibility of medical personnel in implementing the tasks entrust by MOH. Reflective account is selected option for exploration of this dissertation. In my opinion with reflective account I can find the strength and weaknesses of this problem which may be critical to reflect the situation at that time. The effect of this reflection will provide a change in practice to apply variousRead MoreReflective Account.3366 Words à |à 14 PagesINTRODUCTION For this assignment I will be writing a reflective account which will identify a significant episode of care in which I had been involved with, by identifying the pathophysiology and the disease process for the chosen patient; this will be presented by giving a brief outline of the psychosocial influences of the illness for the patient and others who may have been involved with the care. I will also reflect upon this episode by using a reflective model and examining the nursing process, usingRead MoreReflective Account2596 Words à |à 11 PagesREFLECTIVE ACCOUNT UNIT 6 ROLE OF A HEALTH AND SOCIAL CARE WORKER AT 7.15AM I CLOCK IN AND TAKE MY COAT AND BAG OFF AND LOCK THEM IN MY LOCKER SO I AM READY TO START MY SHIFT STRAIGHT AWAY, EVEN THOUGH I SOMETIMES SOCIALISE WITH SOME OF THE STAFF I WORK WITH I ENSURE I AM IN THE RIGHT FRAME OF MIND TO WORD PROFFESIONALLY WITH THEM AND NOT PERSONALLY SO THAT WE ARE ABLE TO WORK AS PART OF A TEAM AND ARE ABLE TO DO THE JOBS THAT WE ARE EMPLOYED TO DO, THEN I WILL WALK INTO THE DINING ROOMRead MoreReflective Account Proforma1988 Words à |à 8 PagesReflective account Subject title TDA 3.4 LO 5 AC 5.1 5.2 Reflective account support children with behavioural needs Complete a reflective account showing your own practice where you have done the following Demonstrate ways of supporting children and young people to review their behaviour and the impact of this on others, themselves and their environment. Include evidence of your actual practice using the past tense | When children fall out and say mean things to each other I alwaysRead MoreReflective Account Essay1420 Words à |à 6 PagesReflective Account Moving handling One day I was ask to transfer Mrs X from bed into wheelchair. Mrs X is paralised so to transfer her a full body hoist is needed. I had to call for help, it wouldnââ¬â¢t be safe to do this by myself. So while I was waiting for the other carer to arrive I have explained to Mrs X what and how we are going to do it. I have also cheked the hoist and battery if its fully charged and operational. I put right size sling on Mrs X with her cooperation. I carefullyRead MoreReflective Account Essays2198 Words à |à 9 PagesThe theme of this reflective account is engaging children in participation, and enabling children to have a voice. The Every child matters documentation (Department for Education 2010) focuses on the important role of the adult in enabling children to make decisions and encouraging them to participate and make a positive contribution. As a result through this account, how children in my setting are encouraged to participate in the outdoor play space will be explored. A small piece of researchRead MoreReflective Account. for Communication1382 Words à |à 6 PagesReflective Account On an occasion at work I was aware of a staff member communicating very negatively, for example sighing and tutting and general negativity. Supervision was due so it was brought into meeting that last had concerned had noticed a change in the personââ¬â¢s general attitude, I asked if there was a specific reason and was told there was not. Although they agreed that they were being negative. We discussed the workload and it was decided it was not that. It was mentioned by the staffRead MoreReflective Account - nursing2646 Words à |à 11 PagesRETURN TO NURSING PRACTICE REFLECTIVE LOG MODULE LEADER: STUDENT NUMBER: 1 INTRODUCTION This essay demonstrates the significant learning that resulted as a consequence of using critical reflection on my practice. The reflective process helped me to realise how my practice needed to change after I experienced a personal and practice-related issue during and after my clinical placement. Reflective practice is an important component of allRead MoreReflective Account on Learning2907 Words à |à 12 PagesReflection: More than just looking in the mirror Ãâ¦reflection in a mirror is an exact replica of what is in front of it. Reflection in professional practiceÃ⦠gives back not what it is, but what might be, an improvement on the originalÃ⦠Biggs (1999). Reflective practice, in this context, is not about just looking at myself in a mirror and accepting what I see blindly, without any question or evaluation. Rather, it is about looking at what I have learned and how I can utilise that learning in my teachingRead MoreReflective Account Unit 5231477 Words à |à 4 Pagesï » ¿ Reflective Account Level 5 Diploma Health and Social Care Candidate Name: Unit Title: 523 Manage induction processes for health and social care or children and young peopleââ¬â¢s settings Reflective Account Assessor Use Only- Assessment Criteria Met Candidate to provide narrative under each statement of how they meet the criteria and list the number of the piece(s) of evidence supplied to demonstrate this. (See also possible examples of evidence sheet). You must provide answers to each question
Sunday, December 22, 2019
The Effects Of Soil Management On Environmental Quality...
1. Literature Review Capacity of a soil to function in supporting important ecosystems without producing a negative interaction with the environment is referred to as soil quality (Larson and Pierce, 1991). This concept integrates physical, chemical and biological properties of the soil (Idowu et al, 2009). As there is an increased awareness regarding the impact of soil management on environmental quality and production of agriculture (Doran and Parkin, 1994), this concept of soil quality has gained increased attention all over the world (Idowu et al, 2009). These interactions determine the ability of the soil to perform some of its very important functions such as retention and release of nutrients, moisture, and resistance to degradationâ⬠¦show more contentâ⬠¦Indicators of soil quality can be defined as those soil properties, which are most responsive to changes in soil processes (Andrews et al, 2004). These indicators play an important role in assessing the management-induced changes in the so il system. These must be diverse enough to represent the different physical, chemical and biological properties of the soil and the various soil processes (Gregorich et al, 1994; Doran and Parkin, 1996). Management Data set (MDS) has been created by using a group of selected soil quality indicators, which provide an evaluation of change in soil system as influenced by different management techniques. (Idowu et al, 2009). MDS has been created for a particular management goal (Andrews et al, 2002; Karlen et al, 2006). Easily measurable soil indicators are often required by the land managers for assessing the soil functions in relation to different management practices (Idowu et al, 2009). It was argued by Larson and Pierce (1991) that soil quality measurement should not be limited to agricultural productivity, as this concept has led to the degradation of the soil in the past. There is a need to develop a generalized assessment tool, which should be able to include the multiple soil functions in different combinations (Idowu et al, 2009). This will include the laboratory analysis, site-specific interpretations, and understanding the effect of management on a particular soil
Saturday, December 14, 2019
Challenges Facing Developing Countries Free Essays
string(95) " stakeholders at all levels in taking action to achieve real and sustainable interoperability\." Information document B Interoperability problems in the developing countries 1. Introduction1 2. Developing countries2 3. We will write a custom essay sample on Challenges Facing Developing Countries or any similar topic only for you Order Now CIS and Europe4 4. Asia-Pacific5 5. Americas8 6. Africa10 Introduction The ITU has made significant commitments to developing countries in a series of instruments: â⬠¢ Article 17 of the ITU Constitution that the functions of ITU-T are to be performed ââ¬Å"bearing in mind the particular concerns of the developing countriesâ⬠; â⬠¢ Resolution 123 (Rev. Antalya, 2006) on bridging the standardization gap; and Resolution 139 (Antalya, 2006) which invites Member States to implement rapidly Resolution 37 (Rev. Doha, 2006) of the World Telecommunication Development Conference on bridging the digital divide. Between the developing and developed countries there is a general digital divide of which one part is the standardization gap. This is recognised in Resolution 44 (Johannesburg, 2008) as having three dimensions: â⬠¢ The disparity of voluntary standardization; â⬠¢ The disparity of mandatory technical regulations; and â⬠¢ The disparity of conformity assessment. Resolution 76 (Johannesburg, 2008) on conformance and interoperability testing considered: â⬠¢ that some countries, especially the developing countries, have not yet acquired the capacity to test equipment and provide assurance to consumers in their countries; and â⬠¢ that increased confidence in the conformance of information and communication technologies (ICT) equipment with ITU-T Recommendations would increase the chances of end-to-end interoperability of equipment from different manufacturers, and would assist developing countries in the choice of solutions. Noted: the need to assist developing countries in facilitating solutions which will exhibit interoperability and reduce the cost of systems and equipment procurement by operators, particularly in the developing countries, whilst improving product quality; Resolved: â⬠¢ assist developing countries in identifying human and institutional capacity-building and training opportunities in conformity and interoperability testing; â⬠¢ assist developing countries in establishing regional or subregional conformity and interoperability centres suitable to perform conformity and interoperability testing as appropriate; Instructed the Director of TSB: â⬠¢ to conduct exploratory activities in each region in order to identify and prioritize the problems faced by developing countries related to achieving interoperability of ICT equipment and services; The following sections review the issues of developing countries then the interoperability problems identified by developing countries in the different regions: CIS Europe, Asia-Pacific, the Americas, Africa and the Arab states. Developing countries The ITU holds developing countries to include three specific categories: Least Developed Countries (LDCs); â⬠¢ Small Island Developing States (SIDS); and â⬠¢ Countries with Economies in Transition (EIT). It does not define these terms, but uses the definitions provided by the General Assembly of the United Nations and by its Economic and Social Council (ECOSOC). [1] Least Developed Countries (LDCs) can be identified by the following three criteria: â⬠¢ Low-income, a three-year average of Gross National Income (GNI) per capita (under US$ 745 for inclusion, above US$ 900 for graduation); A composite Human Assets Index (HAI) based on: percentage of population undernourished, mortality rate for children aged five years or under, the secondary school enrolment ratio and adult literacy rate; and â⬠¢ A composite Economic Vulnerability Index (EVI) based on: population size, remoteness, merchandise export concentration, share of agriculture, forestry and fisheries in GDP, homelessness owing to natural disasters, instability of agricultural production, and instability of exports of goods and services. While there is considerable overlap between LDCs and SIDS, the latter face significant additional problems to achieve sustainable development, because of their small populations, limited resources, remoteness, susceptibility to natural disasters and excessive dependence on international trade. The growth and development of SIDS have been disadvantaged by high transportation and communication costs (e. g. , use of satellites in the absence of undersea cables), disproportionately expensive public administration and infrastructure (due to their small size) and the absence of opportunities to create economies of scale. 2] Countries with Economies In Transition (EIT) are those moving from a centrally planned economy to a free market. This requires economic liberalization, the removal of price controls, the lowering of trade barriers, the restructuring and privatization of financial and industrial sectors. It is usually characterised by the creation of new institutions, including private e nterprises taking on activities previously performed by the state and new instruments for state governance, such as a national regulatory authority for telecommunications. In the 1990s, these comprised the countries formerly members of the CMEA, some of which are now members of the WTO and the EU. The problems faced in EITs have included the absence of a constructive policy framework, the slowness of the establishment of the network infrastructure, the training of people to use it and to exploit commercially the information and knowledge that it makes available. The issue of interoperability has become more important as countries deploy e-government systems. In order to provide high-quality services to citizens it is important that services can be accessed from the widest possible range of equipment. UNDP has published an e-primer on e-government, setting out the vision and value of interoperability and the steps required to achieve this. It explains the value of e-government interoperability frameworks, the parties that need to be involved and are the critical success factors. InfoDev has an eGovernment Handbook for developing countries. Despite the enormous progress made in bridging the digital divide and, in particular, the standardization gap, there remain significant problems in terms of conformance and interoperability due to: Lack of human capacity and of training opportunities; and â⬠¢ Weak institutional systems for: o Standardization, o Testing, o Certification, and o Market surveillance. However, the challenges are far from uniform, requiring careful assessment of regional and national circumstances and experiences. CIS and Europe The European Union has legal provisions that directly address interoperability and empower regulatory authorities to ensure the interoper ability of systems (see information document C). For example, the EC adopted DVB-H as a common standard for mobile television to achieve interoperability throughout Europe. In 2005, the ITU published a study entitled Towards Interoperable eHealth for Europe with the Telemedicine Alliance. A previous study had identified interoperability as a major obstacle to the implementation of eHealth, which the second report addressed in the form of a strategic plan for trans-national eHealth interoperability. Its aim is to assist stakeholders at all levels in taking action to achieve real and sustainable interoperability. You read "Challenges Facing Developing Countries" in category "Papers" 3] As part of its eHealth Action Plan, the European Commission has adopted a Recommendation on cross-border interoperability of electronic health record systems (2008/594/EC). This will ensure that electronic health record systems interoperate, allowing health professionals from another country to access vital patient information from a home doctor and ho spital, improving the quality and safety of medical care. The International Virtual Laboratory for Enterprise Interoperability (INTEROP-VLab) emerged from research projects funded by the European Commission. Its mission is to consolidate, develop and maintain the European research community in the domain of Enterprise Interoperability. In the United Kingdom, a survey of IEEE 802. 11b/g Wi-Fi usage for the Office of Communications (OFCOM) found a wide variety of problems, many due to causes other than spectrum (e. g. , wired Internet and device configuration errors). Spectrum issues tended to be interference between devices in the 2. 4 GHz ISM band, rather than congestion. However, in the centre of London demands on the band were higher than elsewhere and users experienced both interference and congestion. Interference between different types of radio device lead to a proposal for a certification scheme with a broad ââ¬Ë2. 4 GHz friendlyââ¬â¢ logo rather than the conventional ââ¬ËWi-Fi-friendlyââ¬â¢ mark, to help drive acceptance of innovative technologies in that band. Asia-Pacific One of the poorer of the Asian countries was the beneficiary of a sequence of initiatives by national and international aid programmes to assist the evelopment of its telecommunications infrastructure. [4] A side effect of this was that the equipment provided or purchased in the different projects were from different manufacturers, often selected by or linked to the donor agency. However, the variety of equipment could not easily be made to interoperate. The effects on the country were to increase the costs of training for its limited pool of technicians and exp erts (often with international travel), while it reduced the flexibility of use of the equipment. The already limited economies of scale in this country were made worse by fragmentation across different networks and systems, raising the costs for operators and thus for citizens. Within the Asia-Pacific Telecommunity Standardization Programme (ASTAP), the Industry Relations Group (IRG) addresses the needs and concerns of operators and manufacturers. At the 11th Meeting of ASTAP in June 2006 there was a Workshop on Conformity Assessment in the APECTEL Mutual Recognition Arrangements (MRA). It was recognized that input from industry input into ASTAP and APECTEL could help to improve their operation. The IRG subsequently developed a questionnaire on type-approval and conformity assessment. Between June 2006 and February 2007, responses were obtained from 21 companies and 4 regulators, in Afghanistan, Australia, Iran, Japan, Macau SAR, Papua New Guinea, Singapore and Thailand. This identified issues in terms of: â⬠¢ Costs: o Mandatory in-country testing, rather than accepting certified test results from other countries, Preparation of documentation for submission to the regulator, o Testing to meet specific national standards not aligned with international standards; â⬠¢ Delays: o Time taken to approve a product after documents are submitted, o Testing to national standards not aligned with international standards. The survey identified actions to improve type approval process, including the recognition of certified test reports from other countries by Australia a nd Singapore, and limiting standards in technical regulations to international standards, avoiding national variations. An Asia-Pacific regional compliance mark was proposed, one that would be accepted by all national authorities, without further testing or documentation. The IRG called for national authorities to accept accredited test reports from other countries in order to reduce costs and time delays in type approval. The expansion of telecommunication networks, both in geographic coverage and the range of services, in response to market demand is a continuous process for operators, especially in very rapidly growing Asian markets. Operators have two options: a) Procurement of equipment from the original vendor; or ) Procurement of the best value equipment available at the time, not necessarily from the original vendor. However, the second option is not always possible as equipment from different vendors may not be fully interoperable. The procurement of additional equipment is, therefore, constrained to be from the original vendor. The practical difficulties faced by this lack of interoperabilit y in two types of networks are explained below. There are many proprietary implementations of Mobile Switching Centres (MSCs), Base Station Controllers (BSCs) and Base Station Transceivers (BTSs). Although the interface between the MSC and the BSC is now considered stable, the Abis interface between BSCs and BTSs is not yet interoperable (see Figure 1). Where additional BTSs are required, in order to meet growing demand, the network operator is constrained to purchase these from the vendor whose BSCs are already deployed. Figure 1Issues related to mobile networks [pic] An operator in India has experienced interoperability issues in the expansion of its GSM network. Its planners assumed that BSCs and BTSs required to be supplied by the same vendor, due to the proprietary interface between the two. However, the interface between the BSC and the MSC, which is an open standard, required considerable time and effort before interworking could be achieved between equipment from different vendors. Two of the essential components for Intelligent Network (IN) services are the Service Control Point (SCP) and the Service Switching Point (SSP), the latter is normally part of the switch or local exchange (see Figure 2). Consequently, whenever the operator needs to deploy a new switch it has to be purchased from a single supplier, to ensure interoperability with existing infrastructure. Figure 2Issues related to fixed Intelligent Network (IN) [pic] An Indian operator found that SCPs failed to interwork with SSPs from different manufacturers. This issue is considered critical in view of the regulatory requirement to interconnect INs of different service providers. In April 2009, at the CTO/ITU-T Forum on NGN Standardization in Sri Lanka, the issue of non-interoperability was raised. Rajeshwar Dayal from the Indian Department of Telecommunications (DoT), identified the need for interoperability between and within NGNs (see slides). The following month at the ITU Regional Preparatory Meeting for the Asia and Pacific Region, India proposed that ITU prepare a reference document containing interoperability requirements at the equipment level to help smooth the implementation of NGNs. An NGN Pilot Project by the Iran Telecom Research Center (IRTC) identified a number of problems associated with NGNs supplied by: Alcatel, Huawei, Siemens and ZTE (presented at ITU Kaleidoscope). [5] This acknowledged that NGN was not yet a mature technology and therefore subject to interim problems, that should eventually be eliminated. Tests were conducted initially between equipment of a single vendor, then between different vendors. Problems were identified with the implementations of the ITU-T G. 729 codec and ITU-T H. 248, plus difficulties with the call servers from one manufacturer not being able to control the access, media or signaling gateways of other vendors. The problems had been caused by some vendors not implementing standards completely or having done so imprecisely, while some standards were found to contain ambiguities. Americas In the USA, Section 256 of the Communications Act of 1996 requires the FCC to establish procedures to oversee coordinated network planning by providers of telecommunications services. The Act also authorizes the FCC to participate in standards organizations working on network interconnectivity. It is advised by the Network Reliability and Interoperability Council (NRIC), which makes recommendations to ensure, under ââ¬Å"all reasonably foreseeable circumstancesâ⬠, interoperability of networks, including reliability, robustness, security and interoperability of communications networks. One of the major issues addressed by NRIC in recent years has been to ensure the interoperability of enhanced services for emergency calls (i. e. , to 911). Interoperability for e-government has been addressed by the Chief Information Officers Council (CIO). Concerns over problems of the non-interoperability of emergency services communication systems became a matter of public concern, following possibly avoidable deaths of firemen in the collapse of the New York World Trade Center on 9th September 2001 and again after Hurricane Katrina. 6] The US Congress called for work to resolve interoperability problems in emergency response communications. [7] To achieve the political objectives, Project 25 (P25) was established as a development process for the design, manufacture and evaluation of interoperable digital two-way wireless communications products for public safety services. The suite of P25 standards is administered by the Telecommunications Industry Association (TIA) and consists of the following interfaces: â⬠¢ Common Air Interface (CAI); â⬠¢ Inter-RF Subsystem Interface (ISSI); â⬠¢ Fixed/Base Station Subsystem Interface (FSSI); â⬠¢ Console Subsystem Interface (CSSI); Network Management Interface; â⬠¢ Data Network Interface; â⬠¢ Subscriber Data Peripheral Interface; and â⬠¢ Telephone Interconnect Interface. The P25 Compliance Assessment Program (CAP) is a partnership between the Department of Homeland Securityââ¬â¢s Command, Control and Interoperability Division (CID), the National Institute of Standards and Technology (NIST), suppliers and the emergency services. It seeks to: â⬠¢ Ensure that emergency response technologies meet the needs of practitioners; â⬠¢ Assist officials in making informed purchasing decisions; â⬠¢ Provide vendors with a method of testing equipment for P25 compliance; and Support the migration to standards-based communications systems. As of May 2008, eight private laboratories had been accr edited, using ISO 17025, for P25 conformance testing. These can test equipment against standards that ensure radios and other equipment interoperate ââ¬â regardless of manufacturer ââ¬â enabling emergency responders to exchange critical communications. Additionally, there two non-governmental bodies as: â⬠¢ Emergency Interoperability Consortium (EIC); and â⬠¢ OASIS Emergency Interoperability. These work on the development of appropriate standards. Anatel has identified problems with fixed network equipment in: Incompatibilities with: o xDSL: between chipsets in Central Office (CO) and Customer Premises Equipment (CPE), and o GPON: between Optical Line Terminals (OLT) and Optical Network Units (ONU); â⬠¢ Interoperability problems between: o softswitches using SIP and SIP-I standards, o PABX-IP equipment and NGN, and o Call Agent (CA) and Media Gateway (MG), when using the T. 38 fax with MEGACO protocol. Similarly with mobile networks, it has found problems with In ter-RAT (Radio Access Technology): â⬠¢ Voice and data failures going from 2G on 1,800 MHz to 3G on 850 MHz and vice versa; On registration, instead of performing a type 02 a type 00 location update was performed; â⬠¢ With 2G, on moving from 900 MHz to 1800 MHz and vice versa there were voice call interruptions; â⬠¢ Despite automatic network search for 3G on 850MHz band, first tried a type 00 location update with 2G on 1800 MHz; â⬠¢ A loss of network signal with 2 or 3G on any frequency band, terminals failed to repeat network registration when in an area with network signal; and â⬠¢ Where there was no roaming enabled, but a secondary IMSI was available the SIM card terminal did not automatically restart the application for the second IMSI. Africa Much of the ICT equipment in developing countries is old, but has yet to be withdrawn from use, because of limited capital to purchase replacements. The interfaces and protocols of such systems are not able to communicate with any modern systems that are more complex and sophisticated. It required the use of gateways which reduces functionality and increases costs. For example, one international operator wishing to provide lower cost international connectivity into a NE African country had to provide a special gateway to what it considered obsolete technology. Unlike in the developed world, most African countries do not have laboratories to test whether or not communications equipment and systems conform to the required international, regional and national standards, making interoperability testing a challenge. Exceptions include Egypt, Morocco, South Africa and Tunisia (see information document I). Rwanda has seen a profusion of very low-cost GSM handsets. Like India, many of these have proved to be counterfeit, with no proof that they comply with international safety standards or that they conform to network standards and interoperate without causing problems. Tanzania has identified a number of issues shown in Table 1. Table 1Interoperability issues in Tanzania |SN |Item |Positive |Concern | |1 |Antennae have different standards |Incentive to roll out in |Joined networks instead of single network that | | |for different vendor and types |underserved areas |result in duplication of investment and operational | | |e. . space diversity, combining, |Increased employment |expenditure e. g. spare stock, training | | |polar | | | |2 |New technology (upgrade) |Increased competition |Delays or not possible to access some application or| | |compatibility with old versions |Service differentiation |documents e. g Windows 2003 to 2007 or VISTA. | |but not vice versa | |Forced to change from R2 signalling for circuit | | | | |(packet) switching and later likely to IP else miss | | | | |VAS applications | | | | |Environment issue e. g. Exposure or Recycle of | | | | |absolute equipment such as antennae | |3 |Pre-paid and online payment |Easy customer entry and |Revenue stream authenticity | | |(credit card) |consumer choice of services |National Security issues | | | | |e. g. satellite phones | |4 |Liberalization of International |Competitive tariffs |Cyber security. | |gateways. |Improved quality of services |With multiple gateways how ccTLD and Internet | | |VSAT, Earth stations, submarine | |exchanges are to be on optimal use. | | |cables and optic fibre | |Incoming international traffic revenue loss? | |5 |Transmission systems. PDH and SDH |Incentive to roll out broadband|Different control and operational procedure (Central| | |and mono mode and DWDM optic fibre|data |operation management systems). Complex and costly | | |Core switch (TeS, NGN) not able to|Possible sharing of capacity |integration for various vendors | | |parent various media gateways, RSU|(infrastructure) |Need to share customer information e. g. from EIR or | | |(xDSL) |Increased employment |blacklist and fraudsters. | | |Access interface V5. 1 and V5. 2 | |Difficult or too costly to integrate various vendor | | | | |equipment in the network. While specializing to a | | | | |single vendor also ties to limited QS, services and| | | | |costly upgrades. | |6 |Revenue assurance systems |Increase Customer satisfaction |Integration of modules for fixed, GSM and CDMA are | | | |Quality of service monitoring |likely to be too costly | | | | |Integration of data and voice | Few countries in Africa have in place the necessary accreditation systems and technical regulations need to provide a framework for the granting of certificates and licenses for the provision of communications services or the supply of telecommunications equipment. There is a general lack of expertise and human capacity in standardization. African countries have been less able than developed countries to participate in and to influence standards making processes. One consequence of this is that they have been much less involved in the work of devising conformity and interoperability tests and then of conducting the tests of equipment and services. Training in standardization and testing has been insufficient and when available been expensive or involved travel. This has resulted in a lack of understanding of test results when they are submitted from accredited laboratories. In particular, there is a lack of understanding of international standards concerning the implementation of interoperability of ICT systems and devices. The large and growing number of producers of standards is seen as confusing, especially since the standards and the resulting equipment and interfaces are mostly not interoperable. As with the Indian example, African operators have encountered problems interoperating BSCs and BTSs from different manufacturers. Some types of equipment conforming to international standards are intended to operate in specific radio frequency bands, but this spectrum may not be available in Africa. This has made the efficient use of radio spectrum one of the key challenges African countries confront and which has brought about interoperability problems. The Southern Africa Telecommunications Association (SATA), a group of fixed incumbent operators, has identified specific interoperability challenges (see Table 1), relating to NGN equipment. Table 2Southern African interoperability challenges (Source: SATA) Equipment supplier and type |Interoperability problems with | | |Equipment Supplier |Equipment Type | |Huawei Technologies SoftSwitch |Nokia Siemens Networks |Trunk Gateway | |Huawei Technologies SoftSwitch |ZTE |CDMA Equipment (Fax problems) | |Huawei Technologies SoftSwitch |Alcatel-Lucent |WiMAX WAC | |There are several interoperability issues between the BOSS and the Element Managers from different suppliers. | |The standard Northbound interfaces between EM and the OSS are not always open, or the supplier is not willing to open | |those interfaces. | In summary, Africa fa ces the following problems: â⬠¢ Increased supply of poor quality equipment; â⬠¢ Difficulties in the selection of interoperable equipment from a wide range of vendors; â⬠¢ Lack of testing centres, facilities and trained professionals; â⬠¢ Lack of national or regional laws and regulations; and â⬠¢ Lack of understanding of ITU-T Recommendations, the conformance tests and their results. ââ¬âââ¬âââ¬âââ¬âââ¬âââ¬âââ¬âââ¬â 1] Specific tasks have been assigned by the United Nations to the Office of the High Representative for the LDCs, Landlocked Developing Countries (LLDCs) and SIDS (OHRLLS). [2] The telecommunications needs of SIDS are being studied by ITU-D under Question 23/2. [3] See, for example, European Connected Health Leadership Summit ââ¬ËA Manifesto for Connected Healthââ¬â¢ [4] Permission has not yet been granted by the country to disclose its name. [5] http://ieeexplore. ieee. org/ielx5/4534704/4542234/04542262. pdf? arn umber=4542262 and http://ieeexplore. ieee. org/ielx5/4115171/4115172/04115219. pdf? isnumber=4115172 [6] Jerry Brito (2007) Sending out an S. O. S. public safety communications interoperability as a collective action problem. Federal Communications Law Journal 59 (3) 457-92. [7] Senate Report 109-088. Departments of Commerce and Justice, Science, and Related Agencies Appropriations Bill, 2006. House Report 109-241. Making Appropriations for the Department of Homeland Security for the Fiscal Year Ending September 30, 2006, and for Other Purposes. ââ¬âââ¬âââ¬âââ¬âââ¬âââ¬âââ¬âââ¬â BTS of Vendor A BSC of Vendor A MSC of Vendor A BTS of Vendor B Proprietary/Non-interoperable interface SSP of Vendor B Switch /LE Calling Card User Switch /LE SCP SSP SSP SCP of Vendor A SSP of Vendor A Called Subscriber Proprietary/Non-interoperable interface How to cite Challenges Facing Developing Countries, Papers Challenges Facing Developing Countries Free Essays Challenges Facing Developing Countries Janita Aalto Principles of Microeconomics ECO 204 Instructor Kathryn Armstrong March 28, 2011 Challenges Facing Developing Countries Developing countries, also known as third and fourth world countries; face economic challenges that first world countries do not face, on a large scale. Poverty, low literacy rates, poor investments in both human capital and domestic capital, poor nutrition and devastation to populations due to the HIVAIDS pandemic contribute to developing countries moving towards development. The primary focus of this paper is to explore the impact the HIV/AIDS pandemic has had on Sub-Sahara African economies and to explore the challenges facing developing countries to stimulate domestic savings. We will write a custom essay sample on Challenges Facing Developing Countries or any similar topic only for you Order Now The impact on the economies of some of the African countries is still not completely known. If we look at economic impacts, first we must look at the human cost HIV/AIDS is having on Africaââ¬â¢s economic development and ability to cope with the pandemic. According to an online journal, there are four variables that outline the effects on Africaââ¬â¢s future development: ââ¬Å"Economic research helps to estimate the effects of HIV/AIDS on the African economy and the cost effectiveness of prevention and treatment programmes; Economic theory predicts that HIV/AIDS reduces labour supply and productivity, reduces exports, and increase imports; The pandemic has already reduced average national economic growth rates by 2-4% a year across Africa; Prevention and treatment programmes and economic measures such as targeted training in skills needed in key industries will limit the economic effects of HIV/AIDSâ⬠, (BMJ. 2002, p. 232). In examining the economic effects of HIV/AIDS, it is hard to look past the fact that over 17 million African people have lost their lives to HIV/AIDS and has 70% of all HIV/AIDS related cases in the world. These are staggering statistics. As outlined in the above journal article, the mortality rates have ca used a reduced labor supply, reduced labor productivity and reduced exports and increased exports. The population of people hardest hit by the HIV/AIDS pandemic are the prime-aged adults. HIV/AIDS robs industries of both skilled workers and a generation of workers in their prime working years. The associated illnesses and sickness as a result of HIV/AIDS can lead to high absenteeism which impacts labor productivity. The effects of a reduced labor supply and reduced labor productivity, ââ¬Å"reduces exports, while imports of expensive healthcare goods may increase. The decline in export earnings will be severe if strategic sectors of the economy are affected. The balance of payments (between export earnings and import expenditure) will come under pressure at the same time that government budgets come under pressure. This could cause defaults on debt repayments and require economic assistance from the international communityâ⬠, (BMJ. 2002, p. 233). In a 1992 macroeconomics a study on the impact of HIV/AIDS in Africa, it was concluded that ââ¬Å"reduced availability of skilled labour would reduce growth rates by about 50% and investment by 75%, that imports of food and other basic products would increase, and that exports of manufactured and other products would declineâ⬠. It was also estimated that by 2010, ââ¬Å"South Africanââ¬â¢s GDP per capita would be some 8% low and consumption per capita would be about 12% lower than would have been the case without the HIV/AIDS pandemicâ⬠, (BMJ. 2002, p. 234). The pandemic will have lasting effects on the economic development on the Sub-Sahara African countries without international assistance. ââ¬Å"An important step in limiting the economic effects of the pandemic is to develop comprehensive policies tailored to the needs of the economies of individual countries. These policies will inevitably include the introduction of treatment and prevention programmes but may also include economic measures, such as targeted training of skills needed in key industriesâ⬠, (BMJ. 2002, p. 234). One way to help stabilize the economy may be to push expensive antiretroviral drugs at ââ¬Å"highly productive groups of socioeconomic groups in specific industries on the basis of their contribution to economic output rather than their healthcare needsâ⬠, (BMJ. 2002, p. 235). This would most likely be a controversial plan, but the strategy would help the people in those groups and buy time for skills training and development of a new work force to replace those that will either lose their health or their lives. It would also boost the economy if industry production levels can be maintained and exports of goods can remain at a profitable pace. The pandemic is having a major effect on life expectancy, which has been dropping. ââ¬Å" In Zimbabwe, for example, life expectancy is 40 instead of 69. In seven countries in Sub-Saharan Africa, life expectancies are below 40 years of ageâ⬠, (CHG, 2009, p. 3). Not only does this impact the work force, but impacts the children, many of whom lose not only one, but both parents, and other family members that might be able to take them in. Instead these children now become a government responsibility, as they are put into orphanages, group homes, etc. It is estimated that there are 15 million orphaned children across Africa. Standards of living are decreasing, and countries that were once starting to make progress both socioeconomically and economically are headed backwards instead of forward. Poverty is increasing as the family breadwinners are dying or becoming incapacitated by their illnesses. If there are savings, those savings are dwindling as people use their savings just to survive. With mainly young adults dying off, the tax base is shrinking which reduces a countries ability to invest in human capital, such as education and health services, which puts pressure on government finances and reduces economic growth. Investment in education is not a priority with the belief that children will contract HIV/AIDS in adulthood. The poor education of children translates into low adult productivity a generation later. This raises important social and fiscal implications for economic policy. The first is the threat of worsening inequality. If the children left orphaned are not given the care and education en joyed by those whose parents remain uninfected there will be increasing inequality amount the next generation of adults and the families they formâ⬠, (CHG, 2009, p. 6). Investing in human capital is one of the keys to bringing economic growth to developing countries. According to an online website, human capital is defined as ââ¬Å"the set of skills which an employee acquires on the job, through training and experiencesâ⬠, (InvestorWords. com). An investment in human capital also includes; development of and access to, health and nutrition programs. ââ¬Å"Recent studies suggest that 40 percent of the population of the developing nations has an annual income insufficient to provide adequate nutritionâ⬠, (Case, Fair Oster, 2009, p. 427). Low nutrition affects health and poor health affects productivity. Low productivity levels then affect the ability to provide for oneââ¬â¢s family, let alone provide any surplus that can be sold and the money put into savings. There are two explanations as to why capital is in such short supply in developing countries. The first is the vicious-cycle-of-poverty hypothesis. According to our text, ââ¬Å"the vicious-cycle-of-poverty hypothesis suggests that a poor nation must consume most of its income just to maintain its already low standard of living. Consuming most of national income implies limited savings, and this implies low levels of investmentâ⬠, (Case, Fair Oster, 2009, p. 428). Investment is needed for capital stock to grow and for income levels to rise. Without it, ââ¬Å"poverty becomes self-perpetuatingâ⬠, (Case, Fair Oster, 2009, p. 428), and the cycle is complete. The second explanation is that there is a lack of financial incentives for citizens to save and invest, as well as a lack of financial institutions. It is common for the wealthier citizens to invest their monies in Europe or the United States instead of in their own countries. The term for this is capital flight, which ââ¬Å"refers to the fact that both human capital and financial capital leave developing countries in search of higher expected rates of return elsewhere or returns with less riskâ⬠, (Case, Fair Oster, 2009, p. 428). According to an online article, ââ¬Å"Africa is estimated to lose hundreds of billions of dollars in domestic revenues annually through capital flightâ⬠, (Africa Renewal, 2008, p. 12). In order to reverse this trend, it is imperative that the government remove the barriers that turn away wealthy citizens from investing in their own countries. Without domestic savings, investment isnââ¬â¢t possible. Without investment, growth isnââ¬â¢t possible and this cycle continues much like the vicious-cycle-of-poverty hypothesis. What decisions do leaders of a developing country make in order to stimulate domestic savings and in turn, capital? If I were the President of a developing country, I would invest in human capital and banking reform. In investing in human capital, I would target health and nutrition programs for kids and young adults, the next generation of workers. With life expectancy rates falling, efforts must be made to reverse that trend. A much larger investment in education would be made; incentives for college kids that go to school abroad to return to their home country and work in their field for a required number of years. I would emphasize training and skill development for replacement workers in the industries hit hardest by HIV/AIDS. In investing in banking reform, I would offer incentives to people who put their money in banks and other financial institutions. Some of the reasons African people in particular do not put money in savings accounts are; ââ¬Å"physical distance from banking institutions, high minimum deposit and balance requirementsâ⬠¦and the considerable documentation needed to open an accountâ⬠, (Africa Renewal, 2008, p. 7). There are also a limited number of banks available and with over 60 percent of African people living in rural areas, they just donââ¬â¢t have physical access to banks, unless they travel a long distance. In order to convince people to put their savings in banks, interest paid on savings would need to be high and interest rates on loans low. Somehow, people must be encouraged to place their money into savings so money will be available for future investments. ââ¬Å"The UNCDF noted in its 2004 report that in Rwanda about half a million savings passbook accounts, with an average account size of $57, pulled almost $40 mn into circulation in 2001. ââ¬Å" Although this may not appear significantâ⬠, argued the UNCDF, ââ¬Å"proper circulation of these funds into credit products could have a significant multiplier effect in the Rwandan economyâ⬠, (Africa Renewal, 2008, p. 7). Poverty, low literacy rates, poor investments in both human capital and domestic capital, poor nutrition and devastation to populations due to the HIVAIDS pandemic contribute to developing countries moving towards development. For these countries to become economically viable, the governments must encourage citizens to invest in their own countries and not rely on international assistance. Itââ¬â¢s time for both the citizens and the governments to step up and help themselves. References: Case, K. E. , Fair, R. C. and Oster, S. E. (2009) Principles of Microeconomics (9th ed. ) Upper Saddle River, New Jersey:à Pearson Prentice Hall. Dovi, E. (2008) Boosting domestic savings in Africa: From Africa Renewal, Vol. 22#3 (October 2008), page 12, Retrieved on March, 26, 2011, from http://www. un. org/ecosocdev/geninfo/afrec/vol22no3/223-boosting-domestic-savi ngs. tml Economic Commission for Africa, CHG: Commission on HIV/AIDS and Governance in Africa: Africa: The Socio-Economic Impact of HIV/AIDS, Index No. CHGA-B-11-003, Retrieved on March 27, 2011, from http://www. uneca. org/chga/doc/SOCIO_ECO_IMPACT. pdf InvestorWords, Retrieved on March, 20, 2011, from http://www. investorwords. com Copyrightà ©2011 by WebFinance, Inc. ALL RIGHTS RESERVED. PubMed Central: The impact of HIV and AIDS on Africaââ¬â¢s economic development Simon Dixon, Scott McDonald, and Jennifer Roberts BMJ, 2002 January 26; 324(7331):232-235 PMCID:PMC1122139 ; Retrieved on March 25, 2011, from http://www. ncbi. nlm. nih. gov/pmc/articles/PMC1122139 How to cite Challenges Facing Developing Countries, Papers
Friday, December 6, 2019
Critique of Policies and Procedures â⬠Free Samples to Students
Qestion: Discuss about the Critique of Policies and Procedures. Answer: Introduction An adverse drug event is any response to a particular drug that is unintended and noxious that occurs in man, at doses normally used for diagnosis, prophylaxis, therapy of a disease or for modifying physiological functions (Fokoue-Nkoutche et al. 2015). Such adverse events predict hazards that can arise due to future administration of the drug and create a warrant for prevention of that specific treatment. The two policies namely, the National Action Plan for adverse drug event prevention (U.S Department of Health and Human Services) and the Preventing adverse drug events Policy Guideline (Government of South Australia) will be compared in this report, to evaluate their effectiveness on managing adverse drug events. Preventing patient harm from adverse drug events (ADEs) or medications is regarded as a major patient safety priority across all hospitals and patient care centres. Strong evidences suggest that ADEs are preventable. Both the aforementioned policies work towards preventing adverse events that result from drug discrepancies (Carayon et al. 2014). The 2 policies emphasize on surveillance as the essential component of managing and preventing adverse drug reactions. The policies work by coordinating the existing federal surveillance data and resources to assess the rates of health burden and incidence of adverse drug events (Gladden et al. 2014). According to the policies, the public health agencies will work together in coordinating ADE surveillance efforts to progress assessment in preventing ADEs related to diabetes agent, anticoagulants and opioids in the target population. The policies state that health agencies will provide a range of opportunities to the patients that will help them assess their progress in prevention of such adverse drug events within health care delivery networks. The two polices focus on documenting the nature and type of any previously known allergies or ADEs in relevant cases. They also illustrate the appropriate documentation of medication history (Hellstrm et al. 2012). Lack of education, poor comm unication, incomplete information transfer, inadequate access to healthcare services, all contribute to ADEs.The policies focus on the role of efficient communication skills and the transfer of information during handover. Evidence from several studies suggest that good interpersonal communication skills in healthcare settings emphasize on the fact that a provision for information is sufficient as well as necessary to improve individual behavior (Sheldon and Hilaire 2015). Subsequently, all health practitioners andresearchers have moved beyond traditional information sharing practices (that were based on one-way monologue), towards more appropriate and useful ways of informationexchange(that are based on two-way dialogue). The abovementioned aspects are associated with the occurrence of adverse drug events. Moreover, another similarity lies in the sharing of healthcare information between the carer and the patients. Thus, it can be stated that the two policies are similar in various aspects. There are some differences between the two policies. While the policy formulated by the South Australia government elaborates more on communication, access to information on allergic history, reporting ADEs to Therapeutic Goods Administration (TGA) and efficient clinical handover or transfer of information (includes discharge summaries, allergy details and medical history), it does not illustrate the different management techniques or procedures that should be followed if an incident of adverse drug reaction occurs. On the other hand, the National Action Plan focuses on evidence based prevention techniques to address adverse drug events (US Department of Health and Human Services 2014). This policy formulates guidelines that provide patient-centered care, which is central to the decision-making process. The two key objectives of this policy is to identify preventable, common and measurable adverse drug events (ADEs), which result in significant cases of patient harm, and align the ef forts of federal health agencies in reducing such patient harms from specific ADEs. The policy targets three regions for preventing adverse drug reactions. These target regions are: Diabetes agents (Hypoglycemia) Anticoagulants (Bleeding) Opioids (Oversedation or Respiratory depression) While the first policy does not address evidence-based research to counter the action of adverse drug reactions, the second elaborates sharing of existing evidence-based prevention procedures across federal and non-federal health agencies or several healthcare providers and the concerned patients. The National Plan states that supporting dissemination and development of evidence-based prevention procedures prove effective in preventing ADEs. Collaboration with healthcare agencies involved in providing patient care, will help in disseminating the procedures or tools for treating patient populations at higher risk. The SA Health Guideline states that all allergy and ADE details should be documented in the medical records of patients. This also includes the use of electronic records or CPOE. Computerized provider order entry (CPOE) systems are designed in a way to replace paper based ordering system of a hospital. The users are allowed to input the entire range of orders electronically and maintain online medication administration records. The changes made to an order are reviewed by concerned health personnel. The primary steps that are focused are using basic information related to technology and addressing support capability of clinical decisions for safety. The 8-step physician workflow used by CPOE include access to the system, patient selection, data review, data entry, order confirmation, order processing, result receiving and measuring outcomes or accountability (Spaulding and Raghu 2013). Moreover, the SA health policy emphasizes on the use of several electronic systems such as HASS ED, EPAS and iPharmacy (pharmacy management system) to support the documentation of preventing ADE. It also states that these electronic systems will enhance transfer of information and decision support. Hence, it can be deduced from the above stated facts that there are significant differences in the two policies, although both of them work towards managing adverse drug event s. Evidence-based suggestion The National Action Plan is organized into seven sections. The first 4 sections of the plan outline the development and scope of the plan; they identify the surveillance resources that will help to monitor and measure the burden of ADEs, followed by description of the prevention approaches by identification of the key determinants, review of incentives and opportunities that can prevent ADEs. The following 3 sections of the action plan address the high-priority targets such as diabetes agents, anticoagulants and opioids (Voepel-Lewis et al. 2015). The most pertinent actions are highlighted in each area of evidence-based procedures, surveillance areas, incentives and research. The plan suggests that inadequate studies have been conducted in the field of ADE economic impact. Results from older data used in the plan indicate that, adverse drug reactions impose a huge financial burden on healthcare expenditures (Sultana et al. 2013). The plan utilizes evidence from several analyses and s hows that Medicare beneficiaries are more likely to acquire ADEs during hospital stays with Medicare reimbursing. Hospital readmissions due to avoidable ADEs contribute to the huge burden on the healthcare system (Zon and Ganz 2017). The National Action Plan lays stress on conservative estimates that indicated an incidence of 380,000-450,000 ADEs among hospitalized patients every year. Studies suggested that a majority of these events were attributed to opioid and anticoagulant administration, and most of these events were preventable (Chen et al. 2014). Furthermore, the action plan is considered to be more rigorous because it collected evidences from studies that were conducted in outpatient settings, which indicated that 2/3rd of hospital admissions occurred due to 4 medication classes, 3 out of which were preventable targets for ADE: insulin, oral diabetes agents like sulfonylurea and anticoagulants like warfarin. The ADE National Action Plan therefore intended to address patient harms that occurred due to prescribed medication use. It wanted to collate, identify and communicate the gaps and opportunities within the federal system and among external stakeholders. The ultimate goal of the plan was to support and strengthen healthcare providers and systems in their efforts of ensuring safe patient care with regards to ADE prevention. In addition, the plan provided insights on evidence-based practices, to maintain greater consistency in application of the practices. Public health surveillance is generally referred to as the systematic collection, evaluation and interpretation of healthcare data that is essential for the planning, implementation and assessment of public health practice. Surveillance is closely associated with the dissemination of the analyzed data to prevent and control unwanted medical discrepancies. ADE surveillance encompasses identification of the injury (loss of consciousness, hemorrhage, hypoglycemia or other abnormalities) and its attribution to excess or wrong drug exposure. There are several limitations of administrative data in review of clinical documentation. Clinical documentation based ADE surveillance utilizes different algorithmic detection methods and sampling techniques for determining drug related injuries. The National Action Plan is a better policy since it focused on the proximate factors that contributed to ADEs. Results from several studies indicated that altered pharmacokinetics, multiple medications, chronic conditions and medication mismanagement due to physical frailty and cognitive decline are important contributors of ADEs. The fact that the plan elaborated on the effect of anticoagulants in ADEs was supported by research evidences. Anticoagulants are regarded as the mainstay therapy for acute and long-term prevention of thromboembolic disorders. The primary ADE associated with anticoagulants is bleeding. Thus, a plethora of factors such as co-morbidities, age, concomitant medications like warfarin influence thrombotic and hemorrhagic risks. One important health issue identified with respect to administration of diabetic agents is hypoglycemia (Raschi et al. 2013). Hypoglycemia has been defined as abnormal low levels of blood glucose concentration that exposes a person to potential harm (American Diabetes Association 2016). The plan promoted efforts for accurate data collection and timely measurement of trends and burden related to hypoglycemic events. Furthermore, this plan also focused on the adverse reactions that occur due to prolonged opioid exposure. Evidence suggests that opioids cause a number of ADEs that are detrimental to the quality and health of patients (Minkowitz et al. 2014). These adverse reactions include over sedation, gastrointestinal disturbances such as vomiting, nausea and constipation, respiratory depression, pruritus and hormonal dysfunction. The SA Health Guideline on the other hand did not identify any key determinants of such adverse reactions. It primarily laid stress on the importance of documentation and reporting of previous or new adverse drug reactions or allergies. The policy outlined the procedures and responsibilities that are needed to be followed by health professionals to report already known or new adverse drug allergies and reactions. The main focus of this policy was on access to information regarding allergic reactions and their corresponding communication. Therefore, it can be stated that the National Action Plan is more rigorous. Focussing on differences Considering the ways by which health information technology could be used to support the goals of the Action Plan, it illustrated the role of CPOE and medical reconciliation in managing ADEs. These were identified as core measures that addressed documentation of the patient medication list. The primary benefit of CPOE over any other procedure is its proven role in reducing medication errors that usually occur due to illegible handwriting or medical order transcription that makes it difficult to interpret the orders. CPOE systems are designed in a way to mimic thepaper chart workflow (Safdari, Shahmoradi and Ilati 2012). On the other hand, medical reconciliation tries to identify what medications were being given to a patient before hospital admission and focuses on confirmation of appropriate medication orders during and post-hospitalisation (Reiner 2012). The action plan is considered more rigorous based on the prevention strategies or tools it elaborated. The plan utilised techniques of increasing accessibility of evidence based knowledge, effective coordination and communication of real-time care facilities, science-driven multidisciplinary treatment approaches and promotion of best standards within the community. Moreover, the main drawback of the SA guideline lies in the fact that it did not discuss any strategies that have proved effective in reducing ADE apart from communication and medical documentation. Conclusion Thus, it can be concluded that an adverse drug event is a form of an injury that results from wrong medical interventions related to a particular drug. Medication errors are the most common reasons for such events. Prevention of such errors is crucial to improve the quality of healthcare among patients. Administration of drugs at rates higher than acceptable doses and lack of access to medical paper records lead to such condition. The ADE Action Plan is the first step in systematic efforts taken by federal partners, to address surveillance, prevention and research of ADE targets in a coordinated fashion. The goals outlined in the plan will help in safeguarding overall patient safety and wellness in cases of adverse drug events. References American Diabetes Association, 2016. Standards of medical care in diabetes2016 abridged for primary care providers.Clinical diabetes: a publication of the American Diabetes Association,34(1), p.3. Carayon, P., Wetterneck, T.B., Rivera-Rodriguez, A.J., Hundt, A.S., Hoonakker, P., Holden, R. and Gurses, A.P., 2014. Human factors systems approach to healthcare quality and patient safety.Applied ergonomics,45(1), pp.14-25. Chen, Y.C., Fan, J.S., Chen, M.H., Hsu, T.F., Huang, H.H., Cheng, K.W., Yen, D.H.T., Huang, C.I., Chen, L.K. and Yang, C.C., 2014. Risk factors associated with adverse drug events among older adults in emergency department.European journal of internal medicine,25(1), pp.49-55. Fokoue-Nkoutche, A.B., Hassanzadeh, O., Hamedani, M.S., Sellmann, M. and Zhang, P., International Business Machines Corporation, 2015.Prediction of adverse drug events. U.S. Patent Application 14/953,590. Gladden, R.M., Vivolo-Kantor, A.M., Hamburger, M.E. and Lumpkin, C.D., 2014. Bullying surveillance among youths: Uniform definitions for public health and recommended data elements, version 1.0. Hellstrm, L.M., Bondesson, ., Hglund, P. and Eriksson, T., 2012. Errors in medication history at hospital admission: prevalence and predicting factors.BMC clinical pharmacology,12(1), p.9. Minkowitz, H.S., Gruschkus, S.K., Shah, M. and Raju, A., 2014. Adverse drug events among patients receiving postsurgical opioids in a large health system: risk factors and outcomes.American Journal of Health-System Pharmacy,71(18). Raschi, E., Piccinni, C., Poluzzi, E., Marchesini, G. and De Ponti, F., 2013. The association of pancreatitis with antidiabetic drug use: gaining insight through the FDA pharmacovigilance database.Acta diabetologica,50(4), pp.569-577. Reiner, B., 2012.Medical reconciliation, communication, and educational reporting tools. U.S. Patent Application 13/403,529. Safdari, R., Shahmoradi, L. and Ilati, S., 2012. Advantages and disadvantages of order entry system (CPOE) computerized physician and E-mail on patient safety. InTehran: The First International Conference on Electronic Health. Sheldon, L.K. and Hilaire, D.M., 2015. Development of communication skills in healthcare: Perspectives of new graduates of undergraduate nursing education.Journal of Nursing Education and Practice,5(7), p.30. Spaulding, T.J. and Raghu, T.S., 2013. Impact of CPOE usage on medication management process costs and quality outcomes.INQUIRY: The Journal of Health Care Organization, Provision, and Financing,50(3), pp.229-247. Sultana, J., Cutroneo, P. and Trifir, G., 2013. Clinical and economic burden of adverse drug reactions.Journal of pharmacology pharmacotherapeutics,4(Suppl1), p.S73. US Department of Health and Human Services, 2014. National action plan for adverse drug event prevention.Washington (DC): Author,56. Voepel-Lewis, T., Zikmund-Fisher, B., Smith, E.L., Zyzanski, S. and Tait, A.R., 2015. Opioid-related adverse drug events: Do parents recognize the signals?.The Clinical journal of pain,31(3), pp.198-205. Zon, R. and Ganz, P., 2017. Prevention Counseling and Associated Reimbursement Come Closer to Policy Reality, Part.
Thursday, November 28, 2019
American Africans Action in the Struggle for Equality
These are protests that came to prominence in the course of 1950s, which raised concern against the incessant discrimination and racial segregation experienced by the American Africans and other marginalized groups in the southern America.Advertising We will write a custom research paper sample on American Africans Action in the Struggle for Equality specifically for you for only $16.05 $11/page Learn More Continued oppression against people of different color, race, politics, or even religion had inspired many young American Africans to join action in the struggle for equality (Chong 23). Some of the prominent figures in the Movement include Martin Luther King Jr, Malcolm X, W.E.B. Du Bois and Rosa Parks among others. Although the civil rights mass protest was officially formalized in the 1950s and 1960s, the fight for equality in various institutions of the U.S. had started long time ago. Community leaders in various segmentations of the society had sh owed resistance to the white supremacy and domination against the African Americans which had been abounded in some states. ââ¬ËEverydayââ¬â¢s Useââ¬â¢ written at the peak of the transformational movement, is a perfect expression and reflection of the issue of the aspects surrounding the civil rights movement. Set at the height of the social issue, the story is a real representation of the key aspects of the day. Here, the writer applies writing to highlight some of the main issues surrounding the Black Power Movement. Walkerââ¬â¢s purpose on the story is achieved through the creative formation of characters who symbolize the plight of blacks and women as observed during those times. The movement was initially facilitated by the progressive efforts of the descendants of African slaves who had always tried to resist the institution of slavery upon them. Regular protests and campaigns of resistance were some of the common characteristics associated with this movement. Civi l disobedience and activities of nonviolent demonstrations and protests were also common. Sometimes, these would bear crisis scenarios between government authorities and the activists resulting to confrontations. Although it took many years for the issues highlighted in the movement to be addressed, the protests had significant impact to the modern world. Many changes were realized owing to the pressure of the movement. For instance, the Civil Rights Act and the Voting Rights Act were introduced in the years 1964 and 1965, respectively thus granting all American citizens basic civil privileges, regardless of their race and ethnicity. Alice Walker is a renowned female activist who was born and raised at a time when the Civil Right Movements in South U.S. was taking shape. At the height of the transitional movement, Alice, then a college student at Spelman, was lucky to meet and rub shoulders with some of the prominent players in the movement, such as Martin Luther King Jr. This inspi red her to become one of the strongest female activists in the American history.Advertising Looking for research paper on american literature? Let's see if we can help you! Get your first paper with 15% OFF Learn More Her contribution in the struggle for human rights and equality has continued to raise strong impact to the world. According to Tuten, Alice is a woman with many records in life and her largest contribution in life can be perceived through her countless struggles against discrimination and oppression (126). ââ¬ËEverydayââ¬â¢s Useââ¬â¢ is just one of her many writings about race and gender which raised much alert in the civil rights movement. Racism, feminism and the many issues frequently raised by young American Africans whoââ¬â¢d tend to lose respect to the culture that gave birth to them are some of the issue that Alice explores in ââ¬ËEverydayââ¬â¢s Use.ââ¬â¢ As it would be observed, the story in this essay is Walkerââ¬â¢s respo nse to the social discourse of the 1950s and 1960s, when the civil rights movement took place. The writer has vividly expressed some of the issues that continue to plague modern American communities, as expressed through the lives of the characters in the story (Whitsitt 448). Economic, social, and political issues are illustrated in the story, through the family of the narrator, who is referred by the title of ââ¬ËMamaââ¬â¢ or Mrs. Johnson. The story strongly illustrates the big contrast between the narrator and Maggy, one of her two daughters who still share the same conservative life with her, and ââ¬ËWangeroââ¬â¢ or Dee, the educated daughter who scorns the culture that gave birth to her. As observed from this story, the writer has based the two sisters on aspects constituting her own character. Whereby Maggy represents her difficult childhood, Dee remains to be a vivid reflection of her latter life which is characterized by education and success; the two aspects tha t would enable her to take part in the civil rights movement. The two different positions represent the culture and the progress of the American Africans in mid-to late-twentieth-century times. The story is set in a time when the lives of American Africans were undergoing a radical transition. These groups of people were able to gain freedom of civil rights at last, through the glory of civil rights movement, after many years of oppression and discrimination from the whites (Gianturco and Tuttle 18). The final outcome reached on the story, is a representation of the results which succeeded the movement as American Africans started gaining recognition in various segments of the American society.Advertising We will write a custom research paper sample on American Africans Action in the Struggle for Equality specifically for you for only $16.05 $11/page Learn More This freedom would see the emergence of a new generation that has contradicting views about c rucial aspects of life. As a matter of fact, the writer has used the story to defend the legacy of her family and culture and to pay homage to the initial inhabitants of the South, where she grew up. Works Cited Chong, Dennis. Collective action and the civil rights movement, Chicago: University of Chicago Press, 1991. Print. Gianturco, Paola, and T. Tuttle. In her hands: craftswomen changing the world, New York: PowerHouse Books, 2004. Print. Tuten, Nancy. ââ¬Å"Alice Walkerââ¬â¢s Everyday Use.â⬠The Explicator 51. 2 (1993): 125-128. Print. Whitsitt, Sam. ââ¬Å"In Spite of It All: A Reading of Alice Walkerââ¬â¢s Everyday Use.â⬠Africanà American Review 34. 3 (2000): 443-459. Print. This research paper on American Africans Action in the Struggle for Equality was written and submitted by user Jazmin Bean to help you with your own studies. You are free to use it for research and reference purposes in order to write your own paper; however, you must cite it accordingly. You can donate your paper here.
Monday, November 25, 2019
Advanced Critical Writing The WritePass Journal
Advanced Critical Writing Introduction Advanced Critical Writing ). Alcohol is undoubtedly a public health issue and is involved in a high number of road traffic accidents and anti-social activities such as assault, as well as being associated with a number of chronic diseases including alcoholic liver disease and a range of cancers (Rehm et al., 2009; Schà ¼tze et al., 2011). Furthermore, the economic cost can be devastating with alcohol-related injury costing the National Health Service (NHS) around à £2.7 billion a year, based on 2006 to 2007 figures (NHS, 2011). Therefore, the Government should indeed feel some responsibility to tackle and reduce these figures if at all possible. The author argues that such a strategy as minimum unit pricing for alcohol will be an infringement on the British people, a violation of the free market economy and will cause moderate and responsible drinkers to pay for the ââ¬Å"crimes of a few.â⬠However, the author later contradicts themselves saying that ââ¬Å"boosting the cost [of alcohol] isnââ¬â¢t going to stop me drinking, itââ¬â¢s going to just leave me out of pocket.â⬠Here, the author has gone from the extreme and dramatic to an almost mocking of the proposed policy. It becomes unclear whether the author truly believes that the policy would severely affect the innocent or whether it would simply leave people short of a few pounds at the end of the month. This type of contradictory writing can also been seen elsewhere in the article. For example, the writer opens the article with a murky and sinister scene using evocative words and phrases such as ââ¬Å"swarmingâ⬠, ââ¬Å"staggeringâ⬠and â⬠Å"teenagers hunched over a bottle of Frosty Jacks.â⬠This use of language suggests that the author is disgusted and repelled by binge drinkers and the open consumption of cheap alcohol on British streets. However, the author quickly goes on to denounce Government attempts to tackle the problem as a ââ¬Å"crazy ideaâ⬠, once again sending out a mixed message to the reader. The author also argues against the claim that an increase in prices for drinks with a high alcohol content will put off the type of people who buy such drinks purely to achieve a state of drunkenness, namely individuals suffering from alcoholism. The author asks ââ¬Å"isnââ¬â¢t it their choice to drink alcohol?â⬠and suggests that it is unacceptable to hurt the average person financially by trying to price such individuals out of the alcohol market. This an extremely reductionist viewpoint, meaning that the author of the article is reducing the plight of an alcoholic to the result of just ââ¬Å"their choiceâ⬠rather than taking into account the plethora of reasons that can lead an individual down the destructive road of alcoholism, such as homelessness, debt or abuse. Such a view-point is potentially damaging as Spanagel (2009) has warned that a reductionist view of the causes of alcoholism can stand in the way of a better understanding of the underlying pathological p rocesses involved in such addictive behaviour. The author goes on to claim that implementation of a à £0.45 minimum unit price for alcohol is the result of the Governmentââ¬â¢s attempt to try and make revenue from people who can afford a price rise but are just inconvenienced by it. This is an extreme accusation and the author has failed to take into account the evidence that suggests otherwise. Namely that such a policy could have a positive effect on public health and the economy.à Using a price-to-consumption model using various data sources and based on 54 population sub-groups classed as harmful, hazardous or moderate drinkers, Purshouse et al. (2010) estimated that a à £0.45 minimum price unit for alcohol would reduce alcohol consumption by 4.5% and avoid 1,970 alcohol-related deaths.à A recent systematic review found that a price increase of alcohol by around 10% would lead to a reduction in consumption of alcohol by around 5% (Wagenaar, Tobler and Komro, 2010). Both of these studies have provided strong evidenc e that a minimum unit pricing strategy with alcohol would be effective in reducing hazardous alcohol consumption. Further strengthening the argument in favour of minimum unit pricing are doubts that other attempts to reduce alcohol consumption will be far from successful. In a recent editorial, McKee (2012) highlighted that the three main ââ¬Å"lines of attackâ⬠for tackling hazardous drinking consist of marketing, pricing and availability. Marketing and restrictions on availability are difficult to control, especially due to the lobbying power that many companies within the alcohol industry possess (McKee, 2012), and education-based interventions have been shown to be ineffective (Anderson, Chisholm and Fuhr, 2009) Therefore, pricing appears to be potentially the most effective and most easily manipulated element that the Government can utilise to tackle hazardous drinking. However, in addition to the positive effects that a minimum pricing policy has been predicted to have, there were also a number of drawbacks. For example, an increase in type 2 diabetes in young women was predicted due to a loss of the health benefits of moderate alcohol consumption and most of the reductions in harm would have been seen in chronic disorders in the over 45s, limiting the positive effect on the health and well-being of younger people (Purshouse et al., 2010). Furthermore, the figures produced by Purshouse et al. (2010) were based on a time period 10 years after policy implementation, suggesting that the benefit of a minimum pricing policy could be a long time coming. These drawbacks could be seen to support the authorââ¬â¢s claim that the Government would use a minimum pricing strategy primarily to increase their income, seeing as though implementation of the policy would be limited in its immediate and overall beneficial effects on public health. Furthermore, alternatives to minimum pricing such as increasing tax on alcohol, have also been found to decrease levels of alcohol consumption (Elder et al., 2010). However, the existence of potentially equally as effective strategies for tackling hazardous drinking does not automatically suggest a conspiracy by the Government to reap more revenue through a minimum pricing strategy. The author of the article disagrees with the claim that alcohol fuels crime and with the figure that intoxicated people are involved in causing around 5,000 avoidable crimes every year. However, it is well documented that alcohol is prolifically involved in crime. From 1998 to 1999, 70% of crimes were found to have involved alcohol (Home Office, 2001), with alcohol being a component in up to 70% of all stabbings and beatings, 40% of domestic violence incidents and 50% of child protection cases (Alcohol Concern, 2000). These figures are highly disturbing and the authorââ¬â¢s credibility is severely damaged in denying belief in such figures. The author ends the article with a rhetorical question by asking whether we would want ââ¬Å"to live in a free country where people live as their consciences tell themâ⬠or whether we want to try and ââ¬Å"control the behaviour of the poor by pricing them out of activities that we disapprove of?â⬠à A similar use of rhetoric can be seen throughout the article. For example, the author suggests that the next stage after minimum unit pricing may be an increase in theatre tickets to reduce the number of ââ¬Å"poorer, less educated people who might talk during the show.â⬠This is an example of hyperbole where the author is exaggerating in order to manipulate their audience and create a strong emotional reaction. Through the use of rhetoric, the author will hope to encourage their audience to ââ¬Ëcome roundââ¬â¢ to their way of thinking. However, the article would be far more persuasive if the author were to use more facts and empirical evidence to support their v iews. In conclusion, the article is well-written in terms of persuasiveness and in using rhetoric to create a strong emotional reaction in the audience. However, the author too often makes statements that contradict current empirical evidence without justification, which damages the credibility of the source. à References Alcohol Concern (2000) Britainââ¬â¢s Ruin: Meeting Government Objectives via a National Alcohol Strategy. London, UK: Alcohol Concern. Anderson, P., Chisholm, D. and Fuhr, D.C. (2009) Effectiveness and cost-effectiveness of policies and programmes to reduce the harm caused by alcohol. Lancet, 373, pp. 2234-2246. Elder, R.W., Lawrence, B., Ferguson, A., Naimi, T.S., Brewer, R.D., Chattopadhyay, S.K., Toomey, T.L. and Fielding, J.E. (2010) The effectiveness of tax policy interventions for reducing excessive alcohol consumption and related harms. American Journal of Preventative Medicine, 38(2), pp. 217-229. Home Office (2012) The Governmentââ¬â¢s Alcohol Strategy. London, UK: Home Office. Home Office (2001) Fighting Violent Crime Together: An Action Plan. London, UK: Home Office. Kuntsche, E., Rehm, J. and Gmel, G. (2004) Characteristics of binge drinkers in Europe. Social Science and Medicine, 59, pp. 113-127. McKee, M. (2012) Minimum unit pricing for alcohol ââ¬â the case for action is overwhelming. European Journal of Public Health, 22(4), pp. 451. NHS (2011) Statistics on Alcohol: England, 2011. London, UK: The NHS Information Centre. Purshouse, R.C., Meier, P.S., Brennan, A., Taylor, K.B. and Rafia, R. (2010) Estimated effect of alcohol pricing policies on health and health economic outcomes in England: an epidemiological model. Lancet, 375, pp. 1355-1364. Rehm, J., Mathers, C., Popova, S., Thavorncharoensap, M., Teerawattananon, Y. and Patra, J. (2009) Global burden of disease and injury and economic cost attributable to alcohol use and alcohol-use disorders. Lancet, 373, pp. 2223-2233. Schà ¼tze, M., Boeing, H., Pischon, T. et al. (2011) Alcohol attributable burden of incidence of cancer in eight European countries based on results from prospective cohort study. British Medical Journal, 342, d1584. Spanagel, R. (2009) Alcoholism: A systems approach from molecular physiology to addictive behaviour. Physiological Reviews, 89(2), pp. 649-705. Wagenaar, A.C., Tobler, A.L. and Komro, K.A. (2010) Effects of alcohol tax and price policies on morbidity and mortality: a systematic review. American Journal of Public Health, 100, pp. 2270-2278.
Thursday, November 21, 2019
Questions - part II Essay Example | Topics and Well Written Essays - 2250 words
Questions - part II - Essay Example In this paper, we will focus on two philosophers; Boethius and Machiavelli. Through examining the two philosophers, we will be able to understand the main tenets of the ancient modern debate. Part A The main tenets of the ancient modern debate revolve around several differences on the subject of human nature. It is clear that different philosophers have presented diverse thoughts and opinions regarding the so called human nature. Building on this point of view, there has been a developing code of ethics emerging from such theorists and what people accept as true in the present day. It is worth examining Boethius view points on the subject and compare them with Machiavelliââ¬â¢s accordingly. Part B From a literal point of view, Boethiusââ¬â¢s most excellent known work is referred as the consolation of philosophy. He wrote this work whilst in prison while awaiting his execution. Boethius finds himself in jail. At first, he is profoundly upset. The cause of his suffering emerges f rom his enduring project, effort to conserve ancient classical knowledge, specifically philosophy. His work represents an imaginary conversation between himself and philosophy. In that case, philosophy is personified as a woman. The arguments in this scenario are that, in spite of the apparent disparity of the humankind, there is, within platonic fashion, a high power and everything besides is secondary to such divine providence. Despite Boethius suffering while in exile, it is recorded that philosophy appears and attempts to ââ¬Å"cureâ⬠his suffering. Philosophy, which is personified as a woman, does this in various ways. First of all, she does this by reminding him of what he once knew about the true nature of human beings; the nature of fortune, the nature of happiness, and the limits of politics to provide happiness (Boethius 49). In Boethiusââ¬â¢ argument of the nature of fortune, happiness, and the limits of politics to provide happiness, he agonizes over the profess ed inappropriateness between the subsistence of God and the wickedness that exists in the earth. What is more, he agonizes between the existence of God and the superficial ethical inversion of the creation. In responding to such issues, Boethius declares that Godââ¬â¢s kindness and Godââ¬â¢s obligation to honesty does not necessitate that God get rid of every instance of evil. Then again, Boethius presents argument that there are at least different examples of goodness that appear to have need of the likelihood of some wickedness, ethical education with regards to the free will of humans and the true nature of happiness. Moreover, Boethius presents an argument that the nature of evil as self-destructive to wrongdoers and the nature of the ultimate good as the one which, every person naturally look for, an indication that the earth is not decently inverted. As a result, Boethius would dispute the reality of premise in the modern formulation of the issue of evil (Boethius 54). I n his argument for the compatibility of the subsistence of God with the continuation of evil, he provides explanations as to why God would allow occurrences of evil and not do away with them. As a character in the Consolation, he seems to take consolation in such discoveries. Reflecting on the above discussion, it is worth contemplating that the lady philosophy brings to a n end the dialogue with both caution and encouragement, ââ¬Å"
Wednesday, November 20, 2019
White Paper Assignment Example | Topics and Well Written Essays - 250 words - 1
White Paper - Assignment Example Therefore, nurses are advised on how to avoid misuse of social media. Misuse would result into a compromised quality of their service delivery (Gagnon & Sabus, 2015). The white paper puts emphasis on the fact that patientsââ¬â¢ personal treatment history should be safeguarded by nurses. The information can only be shared for medical purposes with the consent of the patient. Therefore, social media should not be used as a platform for sharing private medical information inappropriately. The health Act on Insurance Portability and Accountability gives the necessary guidance on patient privacy regulations (Hader & Brown, 2010). The white paper is a major boost to the efforts of the policy to improve health care service quality and safety. If the provisions of the paper are adhered to, the management and safe-keeping of patient records will improve. Breach of patient confidentiality will be avoided and good professional conduct will be a major code of operation. If nurses pay attention to their conduct, the services they provide will meet the standards that satisfies patients. Consequently, the quality of health care service will be improved (Henderson & Dahnke,
Monday, November 18, 2019
Genetic Modification Research Paper Example | Topics and Well Written Essays - 1250 words
Genetic Modification - Research Paper Example However, genetic modification is most common in plants than in animals. Genetically modified foods are developed for various reasons. For example, to improve the quality of some foods and to some other foods, it is done to prevent the chances of allergies after consumption. Some of the genetically modified foods include; soybean, tomatoes and corn plants as will be discussed in this paper, among others. Although the technology gives a lot of promises for consumption of these foods, there are however some risks associated with the technology just like any other new technologies (Buzzle.com, 2012). Soybeans The genetically modified soybeans are fast growing and resistant to pests and herbicides. This leads to increased production hence food security to the ever-growing population as compared to the traditionally grown crop. The fact that this crop is tolerant to herbicides implies that it cannot be affected by the herbicides once sprayed to the weeds. Therefore, the farmers end up usin g strong herbicides, which are sprayed only once in order to destroy the weeds. This does not require a lot of herbicides because the herbicide once used totally destroys the weeds resulting to reduced environmental pollution. Genetically modified soybeans are drought resistant and can be grown in places with poor soils. This means that the crop can withstand harsh climatic conditions as well as be grown in places with infertile soils where agricultural production is poor with the normal crops. By growing the genetically modified soybeans in such places utilizes the unproductive lands, earning the residents income. Moreover, this food has high nutrient content with more vitamins and minerals, and tastes much better as compared to the traditionally grown crops. This, makes them more preferable to most people than the traditionally grown ones (Anslow, 2008 & Buzzle.com, 2012). Despite the advantages associated with genetically modified soybeans, recent research studies has shown that the growing of genetically modified soybeans may lead to the transfer of herbicide resistant genes to non-target species like the weeds through cross-breeding. This will make the weeds become herbicide tolerant as well. Moreover, chances of cross-pollination to the unmodified crops are also high in such a situation. In many countries where genetically modified soybeans are grown, the genetically modified soybean product is not labeled, as manufactures fear losing customers, which may ultimately interfere with their overall business. This denies the consumers the opportunity of making their own choice on whether to consume these foods or not since the products are not labeled in the market (Buzzle.com, 2012). Apparently, as Anslow (2008) points out, genetically modified soybeans can thrive under any climatic condition giving high production with high nutrients and requires less labor since one does not have to use tillage in order to remove weeds especially in big acreage of land, bu t can just use a strong herbicide instead, to destroy the weeds. Despite these, the negative effects should not be overlooked. For instance, in the long run the weeds also turn to be tolerant to herbicides hence becoming ineffective. Moreover, the consumers end up consuming genetically engineered products unknowingly, because the labels are not included and this may lead to long-term health problems, which is not their fault. Therefore,
Friday, November 15, 2019
Material manufacturing and analysis of engine crankshaft
Material manufacturing and analysis of engine crankshaft The report outlines the detail of material and manufacturing process selection exercise carried out on a typical car engine camshaft. Camshaft being one of the most important engine components requires careful selection of material. Moreover, owing to its specialized operation, the required geometry is relatively complex and certain improvements in mechanical properties are required to be introduced during manufacturing. This calls for and rather complex manufacturing route to be followed. The report initially mentions the operation of the component and describes its required characteristics. The material and manufacturing process selection is then carried out based on the intended use. A detailed description is provided in the end about the selected manufacturing route. INTRODUCTION The crankshaft is the part of an engine which converts reciprocating motion of the pistons into a rotary motion. The rotary motion has the advantage that it can be used rotate the wheel of the car. Crankshaft is an essential component in reciprocating engines because, rotary motion is simpler to mobilize the vehicle in which reciprocating engines is installed. Crankshafts are equipped with crankpins and additional bearing surfaces. The axis of bearing surfaces is offset from the crank. During operation, crankshafts are subjected to following mechanical stresses: Bending stresses due to up and down movement of pistons. Torsion stresses due to rotation of crankshaft and transmission of force to drive train, which subsequently transmit motion to various services. Owing to reciprocating motion of the pistons, bending forces on crankshaft are always cyclic in nature. Therefore, the stress behavior is further complicated due to constant fatigue factor hence necessitating higher fatigue resistance in the component. Friction of bearing surfaces is also important during the operation. The piston arms have to slide past the crankshaft surface. Therefore roller bearings are equipped between the sliding surfaces. However, as rpm of a typical engine reaches 4000-5000 during normal operation, an efficient lubrication is extremely essential for bearing. The crankshaft therefore contains holes for lubrication system. Operating temperature inside the engine is extremely high. Therefore, the material should be such that it retains required mechanical properties at elevated temperature. In order to suppress pulsating behavior of reciprocating engines, crankshafts generally connect to flywheel. In certain cases, a vibration damper is also installed at the opposite end to reduce vibration. Figure No 1: Engine Crankshaft Along with Connected Parts The analysis presented in this report focuses on crankshaft manufacturing which is feasible for large scale manufacturing. Figure No 2: CAD Drawing of the Camshaft MATERIAL SELECTION Based on the stress imposed on the component during the operation, operating temperatures and intended operation, the material to be selected for this component should posses following characteristics: The material should be strong in bending It must have excellent fatigue resistance. The material should be light weight so that it has small value of moment of inertia and transmit motion more efficiently. It must have lesser coefficient of thermal expansion so that the component can retain its original dimension at varying temperatures. The material should be easily machineable so that it can take complex shape (as required for the geometry of crankshaft) easily and without developing unnecessary stresses. After carrying out an extensive research of materials, following materials were short listed for crankshaft: Aluminum Copper Steel Aluminum Aluminum is an excellent machineable metal. It is light weight and can take complex shapes easily. Moreover, it can absorb vibration very efficiently. However, the metal has lower modulus of elasticity and higher coefficient of thermal expansion. Therefore, it will be subjected to larger strains at higher stresses and high temperatures. Moreover, it does not possess good resistance to fatigue loads and corrosion. Copper Copper possess very good corrosion resistant properties. It is easily machineable and has high strength. Moreover, it can possess good surface finish which proves helpful in achieving reduced friction properties. However, the biggest disadvantage of copper is that it is no corrosion resistant. Corrosion rate is significantly higher at higher temperature. It is therefore, not considered suitable for the intended use. Steel Steel is another option to be used as a material for camshaft. Steel is a better choice because, it possess excellent mechanical characteristics which suits best with the operational requirements of engine camshaft. It has the highest modulus of elasticity. It is tough, strong, easily available, cheap and it has very less coefficient of thermal expansion which makes it best suited for high temperature operation. However, steel itself has a large number of variants which posses large range of properties. Therefore, selection of most appropriate type of steel is also very important. An option for crankshaft material is carbon steel. However, these steels require additional heat treatments to acquire required level of strength. Iron crankshaft is also an option. However, iron cannot take higher loads therefore, iron crankshafts are suitable for low output engines where stresses are lower. They have the advantage of being low cost. In fact, the most widely used material for crankshaft worldwide is Vanadium Microalloyed steel. It has following advantages: Vanadium Microalloyed steel can be air cooled after reaching high strengths without further heat treatment. However, surface hardening is required for the bearing surfaces. Low alloy content also makes the material cheaper than high alloy steels. MANUFACTURING ROUTE SELECTION Crankshafts can be manufactured using following methods: Machining Forging and casting These processes are discussed separately in the lines below. Machining Process Machining is yet another process which can be used to manufacture crankshafts. Crankshafts can be machined out of a billet, often using a bar of high quality vacuum re-melted steel. Machining process has following advantages: Higher quality of steels, which cannot be forged can be used through machining process. No expensive tooling is required for machining process. Extremely high quality crankshafts can be manufactured. However, machining process also has following disadvantages: It is a highly expensive process because; it generally uses high quality material. Moreover, a significant quantity of material is also wasted during machining process. Additional heat treatments are required to get required material properties. Forging and Casting Process Forging is the most widely used process for manufacturing crankshafts today. It is due to the following reasons: The component has lighter weight The forged shafts have better damping characteristics More compact dimensions can be achieved The camshaft is a complex component. Therefore, it is not feasible to manufacture the complete component using a single process. Instead, the manufacturing process comprises of multiple steps encompassing various machining, milling, forging and heat treatment operations. The details are outlined in the next section. DESCRIPTION OF SELECTED MANUFACTURING ROUTE Following is the detailed outline of manufacturing process selected for the camshaft: The raw steel are required for a diameter range from 2.125 to 2.5 and 20ft in length (Figure No 1 in Appendix A). The raw steel bars are then turned on a lathe to remove the rough surface and then cut into the proper lengths depending on the engine size (Figure No 2 in Appendix A). Subsequently, the steel begins the process of becoming a camshaft as both the journals and lobes are cut and evenly spaced out. The Camshafts are then stack up and are prepared for the copper plating (Figure No 3 in Appendix A). The copper plating is done to keep the steel from becoming brittle and helps straighten the camshaft after the heat treating process. Once the copper is applied, the journals are lathe down to the thickness that is needed (Figure No 4 in Appendix A). The surfaces are then finished. Next, a special lobe milling machine is used to create the lift for the cam. These CNC machines use computerize programs that allow the manufacture to create the desired lobe and are precise at 0.0001 of an inch (Figure No 5 in Appendix A). Once the cams are roughly cut, they are placed in a furnace for heat treating. This process hardens the steel making the cam less likely to warp or snap when put under the stress of an engine. After the heat treating, the journals go through their final grounding stage and are milled to the correct dimensions (Figure No 6 in Appendix A). Following the journals are the lobes. They are grounded and polished to provide a smooth surface which reduces friction in the engine, freeing up horsepower. The last process uses a computerized scanner that checks the tolerances on the cams. Making sure that every lobe and journal are exactly the same.
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