Tuesday, September 24, 2019
Business Decision Making Essay Example | Topics and Well Written Essays - 750 words - 1
Business Decision Making - Essay Example I highly appreciate your hard work and tolerance in this organization. The organization committee has invented viable contingent plans and strategies to deal with the economic downs that are anticipated to hit our organization. This is to ensure that every employee within our organization is catered for during this challenging moment. Therefore, you should not worry about it because measures are in hand to ensure everything runs smoothly and nothing goes amiss. I urge you to focus on your jobs and think less about the anticipated layoff, because this is a problem that shall affect the entire nation. You should know that, this is just anticipation, and no one is certain if it will occur. The organization values every one of you and when faced with such circumstances, sometime we are forced to consider dismissing some employees in order to survive the economic hardship. This does not mean that the layoff is permanent, but, immediately we surmount over the hardship, the organization sha ll call them back. The organization shall ensure that the layoff is done fairly and on merit basis. That is to say, your hard work shall determine your stay in the organization during the layoff. I urge you consider the layoff necessary because this will help the organization minimize the costs incurred, and it is difficult to strain through the hardship and survive the economic upheavals. In ensuring that minimal effects are experienced, the organization has viable plans to relocate some of the employees in our friendly organizations. I hope that you will bear with the situations and understand that the situation is pushing us to this extent, otherwise all of you are great employees and your work is greatly appreciated. I know all of you are very stressed right now, but I assure you that this are only preventive measures that the organization is taking and will only apply if the situation worsens. In case the layoff will push through I promise that it will be fairly done, but we be lieve that the economic downfall will fade away so that we may not have to reach that level of layoff. Am deeply concerned with the gloomy faces you are portraying and I wish to urge you all not to be stressful in any way as everything will be alright in near future. Interact freely and share ideas among yourselves and be free to forward them to the administration for more consideration. I want also to stop the spirit of fear among you and urge you to speak out in case you have any complain, an idea or a suggestion. Stress and fear will not help us in any way at this difficult time that the economic downfall has hit our company. We need to focus our minds to ensure that it is handled before it worsens and pushes us to harsh measures like layoffs. We should take advantage of the situation to invest even more in the quality of our services. The administration also urges you all to input more effort as you all can see the tough times that we are in. We urge every one of you to accept w hole heartedly all the measures take to tackle this situation. The organization is promising that it will not tighten the working schedules but, all of you are being urged to deliver quality services at this hour of need. We believe that in the near future this terrible crisis will be
Monday, September 23, 2019
Can food ever be too cheap Can consumers be denied choice Can Essay
Can food ever be too cheap Can consumers be denied choice Can supermarkets offer the lowest prices and still be ethical You - Essay Example There is an argument if it is ethical for business community to overlook the environmental damage cause by the transportation of food from thousands of miles away, consume fossil fuels and cause green house gases. On the other hand people argue that the imported organic food items creats much of the CO2 at its production site. For instance, lamb imported from New Zealand produce around 1500 pounds of CO2 per ton while the same produce four times if raised in Britain. Since I am an staunch supporter of importing items from other countries, it is important to make one understnd that carbon emission is not the only reason for global warming issue. Other factors, which economists term as ââ¬Ëfactors inputs and externalitiesââ¬â¢, like use of fertilizers, packaging disposals, irrigation methodology, use of different types of transportations etc. are also considered while using ââ¬ËFood Mile Calculatorââ¬â¢, a technique to quantify the carbon emission footprints. Secondly, grow ing population of the world has made it impossible to feed through local grown production. Therefore, rather an effort to control the obsession for food of our consumers, go beyond the borders, utilize naturally fertile lands and provide sustainable products irrespective of the season. The new deal drafted by World Trade Organization is helping new economies to emerge. It ensures that trade balance does not fall in favor of rich countries only. Countries like Indonesia and Bangladesh with huge populations are discouraged to depend only on American and European economic aids, and adopt ââ¬Ëcatch-upââ¬â¢ policies to reduce their trade deficit. The Soil Association (UK) voices for the ââ¬Å"food milesâ⬠labelling system but insists that it is not trying to stop air-freight, produces more carbon dioxide than any other tansportation means. Reseachers believe that concentrating only on air-freighted products, that constitutes only 0.5% of the global production (Soil Associatio n), will hurt the economic efforts to build local economies of the under-developed countries. I can, therefore, confidently state that the real issue is not about the global warming but the accessibility of our consumers to a sustainable organic product and information about the economic and social impact of intercontinental world trade. Despite of freedom of choice, more environmental friendly and financial boost that each ââ¬Å"food mileâ⬠brings to the international communities, people stand against it. I am not against the local producers, but people tends to be over conscious when it comes to air-freighted food. Of course, it does not bring the price down, but makes it possible to offer the food they like when it is not being home grown. The availability of such items gives an added-value to the supermarkets and for that businesses are entirely elligible to add increased cost of transportation and logistics. For instance, locally grown British broccoli, available only fro m February to April, is much cheaper than the Zimbabwean purple broccoli, available through out the year. Personally, I would prefer ââ¬Ëfood milesââ¬â¢ labels tagged rather denying our consumers from having healthy food choices, just because of a false notion. This is unethical business practice and does not help the local as well as international societies in any way possible. There are several
Sunday, September 22, 2019
Course Syllabi- History of Graphic Design Essay Example for Free
Course Syllabi- History of Graphic Design Essay Course Description History of Graphic Design is a critical contextual research and survey study of the intents, influences, practices, and artifacts of graphic design. The course will be structured on readings, research, and visual presentations on subjects of designer activities throughout history with an emphasis on the broader historical context of the planning, production, form, distribution, reception and cultural integration of graphic design Student Handbook The Student Handbook is now available digitally rather than in hard copy. It can be found on the PNCA website (under Student Life) and on Homeroom (Home page, under PNCA Essentials). Disability Support PNCA is in compliance with federal law requiring colleges to provide reasonable accommodations for students with documented physical and/or learning disabilities. If you have a disability that might affect your performance in this class, please make it known to the instructor. Learning Outcomes At the conclusion of this course, the student should be able to : -à â⬠Demonstrate and articulate in discussions, writings, and visual presentations an understanding of the historical context of the creation of a work of graphic design (i.e. time, place, culture, intents) -à â⬠Synthesize readings and lectures and be able to formulate and post discussion points and prepare visual examples for peer review and feedback (as comments) using online tools -à â⬠Utilize, and bibliographically document, a range of resources used for the study of the history of graphic design (books, journals, periodicals, online, interviews) -à â⬠Creative Practice Identify the roles, activities, and trades of communication design professionals throughout history and distinguish specific fields related to and integrated with the profession of graphic design -à â⬠Learning Outcomes are linked to PNCAââ¬â¢s Core Values which are: Identify and articulate the influence of fine art (theories, trends, aesthetics, visual styles) on the work of graphic designers Integrated Knowledge, Critical Thinking, Cultural Inquiry Social and Ethical Responsibility Course Content initiate, and participate in, discussion on the planning, process, production and distribution of works of graphic design -à â⬠Effective Communication -à â⬠formulate a connection of the cultural influences on design from history with practices of contemporary graphic designers through examples, writings, and discussions Assignments for this Class: -à â⬠-à â⬠-à â⬠-à â⬠Required Readings and discussion with evidence of comprehension Weekly Subject Research and On-line Posting to Homeroom Weekly In-Class presentations Final Research Paper Topics for weekly research will include: Design during Cultural Upheavals / World Conflicts Design for Social Causes / Design for Social Good Design for Commerce, Consumption, Commercialism Information Design / Dissemination and Distribution of Information Technological Changes and its Influence on Graphic Design Design as Author, Designer as Artist, Whole Designer The Concept of Brand and the Development of Brand Identity Low Design / Bad Design Major Benchmarks in Typography Reactionary Design / Culture Jamming Expectations/Policies for this course: Students are required to read and to be ready to articulate a response to all readings assigned in class. Each week there will be an assigned subject research topic that will require independent sourcing, image documentation, writing, and on-line posting on the ââ¬ËHomeroomââ¬â¢ site established for the course. Each student will make a 5-10 minute presentation of each assignment postings during classtime with an expectation of the use of prepared supported notes for verbal elaboration on the material presented. In-class and on-line participation in the form of response and discussion and will be expected and recorded. A final research project on the relatedness of the topics of historical practice presented to the practices of a contemporary designer or design firm/group will be in the form of a research paper. (8-10 pages minimum) Attendance You will be allowed two absences without additional penalty although you are responsible for any work that is missed. The third absence will result in the lowering of an entire letter grade from the computed final grade. A fourth absence will result in a final failing grade of F. Missing 30 minutes of a class period (during any part of the scheduled classtime) counts as an absence. Frequent tardiness (less than 15 minutes) will accumulate to absences (3 tardies =1 absence) Number of hours students are expected to work outside of class: This class meets for three hours per week, and six hours of work outside of class are expected. (3 credits) Grading Criteria â⬠¢ Weekly Research Assignments timely completion / in-class presentation preparedness and comprehensiveness â⬠¢ In-Class participation/contributions â⬠¢ On-Line participation/contributions â⬠¢ Final Research Paper Materials / Supplies Required: â⬠¢ Access to, or ownership of, equipment to scan/photograph (digitize), upload and review visual and text information on a regular daily basis. (Computer and Camera/Scanner) â⬠¢ Money for photocopying (approx. $20 projected) â⬠¢ Flash Drive (2-4gb) Recommended: History of Graphic Design text purchases (Personal library) Bibliography The books listed here are predominantly larger volumes dedicated to a broad overview and history of graphic design. (More may be added during the semester) Many less comprehensive but key texts are available in the library as well as journals and periodicals that are specific to designers, styles, and various other edited groupings ââ¬â these should be sought out and reviewed andutilized especially for more indepth study on a research subject. Major Texts of the History of Graphic Design Those mark with asterisk* are on reserve shelf at front desk of PNCA library and are available on 3 hr. check out (note: many of these text have duplicates or earlier editions and are available for longer check out periods if needed) Title: Meggs, History of Graphic Design, 4th Edition* Author(s): Philip Meggs, Alston Purvis Publisher: Wiley ISBN: 978047169902 Library Call#: Z 246 .M43 1983 Title: Graphic Design, a Concise History* Author: Richard Hollis Publisher: Thames Hudson world of art ISBN 0500203474 Library Call#: NC 998 .H65 1994 Title: Graphic Design: a New History* (1st and 2nd Editions) Author: Stephen Eskilson Publisher: Yale University Press ISBN: 0300120117 Library Call#: NC 998 .E85 2007 (1st Edition in Library*) Students are invited to contribute to the additions to this bibliography through their weekly research and presentation. All sources should be cited using MLA citation methods. Title: Graphic Design History, A Critical Guide* Author(s): Johanna Drucker, Emily McVarish Publisher: Pearson/Prentice Hall ISBN: 0132410753 Library Call#: NC 998 .D78 2009 Title: Graphic Design in America* Author(s): Mildred Friedman, Joseph Giovannini, Steven Heller Publisher: Walker Art Center ISBN: 0810910365 Library Call#: NC 998.5 .A1 G65 Title: Design, Writing, Research* Author(s): Ellen Lupton, Abbot Miller Publisher: Kiosk ISBN: 1568980477 Library Call#: Z 246 .L86 1996 Title: Communication Design, Principles, Methods, and Practice Author: Jorge Frascara Publisher: Allworth Press ISBN: 1581153651 Title: A Century of Graphic Design Author: Jeremy Aynsley Publisher: Barronââ¬â¢s Educational Series ISBN: 0764153242 Library Call#: NC 998.4 .A96 2001 Other Readings: Journal: Visible Language 28.3, New Perspectives, Critical Histories of Graphic Design, Pt. 1 Critiques Editor and Publisher: Sharon Poggenpohl Digital reference (Links) sites should be added to online postings On-Line History of Graphic Design Reference www.designhistory.org Weekly Course Schedule Week 1 6 Sept Week 2 13 Sept Friday, 13 September is the last day to add or drop a class. All information (dates, times and assignments) in this schedule is subject to change at any point during the semester. Updates will be announced and posted. Welcome / Introductions Class Expectations / Syllabus Overview / Course Structure / Assignments Using Homeroom / Communication Expectations Course Resources Reading Assigned (Posted on Homeroom) Critical Histories of Graphic Design Discussion of Readings on the approaches to History of Graphic Design development Lecture: Brief History of Graphic Design, Pt.1 Read on Homeroom these posted excerpts for this class: Graphic Design History, a critical guide, by Drucker and McVarish, Communication Design, Principles, Methods, and Practice, by Frascara, Graphic Design, a Concise History, by Hollis, Meggââ¬â¢s History of Graphic Design, by Meggs and Purvis, Visible Language 28.3 New Perspectives: Critical Histories of Graphic Design, article by Blauvelt Also read (for this classes visual lecture): ââ¬Å"Prehistoric Prelude to Graphic Designâ⬠from Graphic Design History, a Critical Guide, by Drucker and McVarish Week 3 20 Sept Lecture: Brief History of Graphic Design, Pt.2 Read on Homeroom these posted excerpts for this class: ââ¬Å"Early Writing: Mark Making, Notations Systems, and Scriptsâ⬠from Graphic Design History, a Critical Guide, by Drucker and McVarish Lecture: Conventions and Norms Overview of Weekly Research Project Topics, Objectives, Goals, Expectations, Methods Introduction of Topic 1: Design during Cultural Upheavals / World Conflict Week 4 27 Sept Student Research Presentations of Topic 1: Design during Cultural Upheavals / World Conflict Questions and Discussion Introduction of Topic 2: Design for Social Causes / Design for Social Good Week 5 4 Oct Student Research Presentations of Topic 2: Design for Social Causes / Design for Social Good Questions and Discussion Introduction of Topic 3: Design for Commerce, Consumption, Commercialism Week 6 11 Oct Student Presentations of Topic 3: Design for Commerce, Consumption, Commercialism Questions and Discussion Introduction of Topic 4: Information Design / Dissemination and Distribution of Information Week 7 18 Oct Student Presentations of Topic 4: Information Design / Dissemination and Distribution of Information Questions and Discussion Introduction of Topic 5: Technological Changes and its Influence on Graphic Design Week 8 25 Oct Student Presentations of Topic 5: Technological Changes and its Influence on Graphic Design Questions and Discussion Introduction of Topic 6: Design as Author, Designer as Artist, Whole Designer Friday, 25 October is the last day to withdraw from a class. Week 9 1 Nov Student Presentations of Topic 6: Design as Author, Designer as Artist, Whole Designer Questions and Discussion Introduction of Topic 7: The Concept of Brand and the Development of Brand Identity Week 10 8 Nov Student Presentations of Topic 7: The Concept of Brand and the Development of Brand Identity Questions and Discussion Introduction of Topic 8: Low Design / Bad Design Week 11 15 Nov Student Presentations of Topic 8: Low Design / Bad Design Questions and Discussion Introduction of Topic 9: Major Benchmarks in Typography Week 12 22 Nov Student Presentations of Topic 9: Low Design / Bad Design Monday, 18 November SP14 registration begins Questions and Discussion Introduction of Topic 10: Reactionary Design / Culture Jamming Week 13 29 Nov Thanksgiving Holiday. No class. Week 14 6 Dec Student Presentations of Topic 10: Reactionary Design / Culture Jamming Questions and Discussion Final Paper Topic Determination Week 15 13 Dec Final Paper Draft Due ââ¬â Individual Meetings Week 16 20 Dec Final Class ââ¬â Course Wrap-up / Overview Friday, 20 December Last day of classes. Please note: The rest of the template is uniform for all PNCA classes, it includes: PNCA grading policy, statement on plagiarism, library ACE. This section should be included in any electronic versions of the syllabus, but doesnââ¬â¢t need to be distributed to students in paper form. ACE The Academic Center for Excellence (ACE) @PNCA is a peer driven support network for students at all levels. ACE provides in person and online assistance with the following: study skills, digital tools, research, writing and editing strategies, math, professional practices (rà ©sumà ©s, cover letters, documentation), idea generation, project management, organization, and more. For more information, location and hours, please visit the ACE Homeroom site: http://homeroom.pnca.edu/sites/1019 About Your Library The Charles Voorhies Fine Art Library provides research assistance, help with citations and bibliographies and a place to document your artwork. Whether you are looking for articles, books, audio collections, DVDs, or Web resources, the library can help! For research help contact Dan McClure ([emailprotected]) and for help with library materials contact Serenity Ibsen ([emailprotected]). More information is available at www.library.pnca.edu. Statement on Academic Integrity PNCA values intellectual honesty and encourages authentic expression, independent thinking and original writing. The College expects that all work conducted and submitted by our students shall be the combined result of original thought and ethical research. All acts of plagiarism, whether deliberate or unintentional, are considered a violation of the Student Code of Conduct and will not be tolerated on the PNCA campus. It is the studentââ¬â¢s responsibility to be aware of and to act in accordance with the PNCA Guidelines for Academic Honesty. This is a document that defines plagiarism, discusses the conventions of ethical research and documentation, and explains the appropriate uses of source materials. These guidelines also describe the studentââ¬â¢s responsibility for maintaining documentation and evidence of research in order to verify originality in all writing assignments at PNCA. The document: PNCA Guidelines for Academic Honesty is provided for you in the following locat ions on campus: the Student Handbook, the Libraryââ¬â¢s Homeroom site, the Academic Integrity HomeRoom site, the ACE HomeRoom site, the Foundation HomeRoom site, the Liberal Arts Homeroom site. You may also view written copies of the PNCA Guidelines for Academic Honesty in the office of Student Services, the Academic Deanââ¬â¢s office, and the PNCA Library. Student Information + Responsibilities Students are expected to have in their possession a current edition of the Student Handbook. Students are responsible for all the information contained in the handbook, and should refer to the handbook frequently for deadlines, policies, procedures, and responsibilities. Student Handbooks are available in the office of Student Services. Students are expected to check their student mailboxes frequently for communications from their instructors or from the administrative offices of the college. Week Two is the last week that you may add or drop a class with no penalty. Week Eight is the last week that you may withdraw from a class with a ââ¬Å"W.â⬠PNCA Grading Criteria This is the institutional grading policy for all PNCA students. Grades are distributed after the end of each semester. Grading Criteria Grade A: Student performance is outstanding. Student exhibits excellent achievement and craftsmanship in all aspects of work. Student exceeds the problem criteria and consistently challenges himself/herself to seek fresh solutions to assigned problems. Student exhibits a commitment to expanding ideas, vocabulary and performance. Studentââ¬â¢s attendance, participation and class involvement are excellent. Grade B: Student performs beyond requirements of assignments. Student exhibits above-average progress and craftsmanship in all work. Student meets and exceeds the problem criteria. Student exhibits above-average interest in expanding ideas, vocabulary and performance. Studentââ¬â¢s attendance, participation and class involvement are above average. Grade C: Student performance is average and all requirements are fulfilled. Student exhibits an average level of progress and improvement in all work. Student meets the problem criteria. Student exhibits interest in expanding ideas, vocabulary and performance. Studentââ¬â¢s attendance, participation and class involvement are adequate. Grade D: Student performance is uneven and requirements are partially fulfilled. Studentââ¬â¢s output is minimal. Student exhibits minimal improvement in work. Student does not meet the problem criteria in all assignments. Student exhibits minimal interest in expanding ideas, vocabulary and performance. Studentââ¬â¢s attendance, participation and class involvement are less than adequate. Grade F: No credit earned. Student fails to meet a minimum performance level. Student does not exhibit achievement, progress or adequate levels of craftsmanship in all assignments. Studentââ¬â¢s work is consistently incomplete or unsuccessful. Studentââ¬â¢s attendance, participation and class involvement are inadequate. Pass/Fail Grade: A Pass/Fail grade will be given for designated courses in which the course content is such that direct faculty oversight of the learning experience is not possible, and evaluation on the present grading scale would be difficult. ââ¬Å"Passâ⬠implies a ââ¬Å"Câ⬠grade or above. ââ¬Å"Failâ⬠implies less than a ââ¬Å"Câ⬠grade and course work graded as ââ¬Å"Failâ⬠does not apply to the degree. Pass/Fail grades are not calculated in the grade point average. This grading applies to Internships. Graphic Design Co-op uses traditional letter grades. Incompletes In certain situations, a student may request an ââ¬Å"Incompleteâ⬠grade in a class. You may petition for an ââ¬Å"Incompleteâ⬠only if your situation meets both of these conditions: 1. An extenuating circumstance exists and it has prevented you from completing the coursework (Extenuating circumstances are illnesses, family, emergencies, etc.), 2. You are currently in good standing in the class. See the Student Handbook for more information about Grades and Incompletes.
Friday, September 20, 2019
Examining Brazing And Soldering Engineering Essay
Examining Brazing And Soldering Engineering Essay Brazing and soldering was the joining process, it similar like are welding process. The result in the name of the joining are being interchanged and confused. The welding society like an American society was selected the arbitrary temperature, example 800 Ã °F as a line derarkation between two processes. Brazing is joining process that similar soldering except that the joining takes place at temperatures above 800 Ã °F. Definition brazing is a metal joining process by using a filler metal is heated above and distributed between two or more close fitting parts by capillary action. The filler metal is brought slightly together, it melting temperature while to protected and by a suitable atmosphere with usually a flux. It then flows over the base metal and is then cooled to join the workpieces together. It was similar to soldering, except the temperatures using to melt the filler metal is above 842 Ã °F. The filler metals are distributed between closely fitted surfaces of the joint by capillary attraction. Brazing is call really braze-welding, wherein, a nonferrous filler metal is applied. Brazing alloys was much stronger than solder alloys. The brazed joint not requires as much depth to achieve the strength as the soldered joint. To achieve the strength, filler metal must be alloy wi th the base metal. The filler metal must combine with the base metal properly. The brazing condition was very good if the combination very properly. They are eight basic steps in making capillary metallurgical joints like step 1 is Cutting and sizing the parts to be joined, step is Cleaning, step 3 is Fluxing, step 4 is Assembling and supporting or jigging. For step 5 is heating, step 6 was applying filler metal, step 7 is cooling and last step was Post-cleaning. Several of brazing process must to added operations for cooling and post-cleaning. These steps may require for more operations in order to prevent further action by using the flux. The basic procedures must follow and the correct filler alloys are used, to having a successful joining. The joining design must be suitable capillary for the molten filler when the joint elements are properly aligned. The flow of filler must need to enable and assure coverage. Filler metal must melt at a lower temperature at the base material of allow the flow, substrate wetting, and interdiffusion. This means that some component of the filler metal must be soluble in the substrate solvent .To allow the brazing, heat can apply at the joint or to the entire assembly to be brazed. In this case, a temperature must be reached at the joint to allow the filler metal to melt, wet, and flow. Temperature must at least in the joint to prevent uneven or incomplete filling. Protective shielding is required during brazing process to prevent oxidation of cleaned joint on the surfaces during heating and until completed the braze flow. This can be accomplished with another a chemical flux or an inert atmosphere. Sometimes the flux or atmosphere can be required to clean and chemically can be active the surface at the brazed. To have a high quality brazed joint, the base metals and part must be closed, exceptionally clean and free from the oxides. In these cases, the joint clearances must be from 0.03 to 0.08mm because that clearance was the best capillary action and joint strength. However, some brazing process is not uncommon to have joint clearances around 0.6Ã mm. The brazing surfaces are very importance, as any contamination also can cause poor wetting. They have two main methods to cleaning parts, prior to brazing are chemical cleaning and mechanical cleaning. Mechanical cleaning is very importance to maintain at surface to force the wetting on a rough surface occurs more readily than on a smooth surface on the same geometry. Effect of temperature and time on the quality of brazed joints cannot be over looked. Temperature of the braze alloy can be increased because the alloying and wetting action of the filler metal increases very well. The brazing temperature must select above the melting point of the filler metal. However, there factors that influence the joint designers temperature selection. Must choice the best temperature as to be the lowest possible braze temperature, minimize any heat effects on the assembly, keep filler metal or base metal interactions to a minimum, and must maximize the life of any fixtures or jigs used. Some of cases, may can allow selected a higher temperature for other factors in the design. The effect on the brazed joint primarily affects the extent to which the aforementioned effects are present; however, in general most production processes are selected to minimize brazing time and costs. The most important is the non-production settings; time and cost are secondary to oth er joint attributes for example like strength and an appearance. Brazing process not contained within an inert atmosphere environment, fluxes are required to prevent oxides from forming from the metal in heated. The flux can clean any contamination on the brazing surfaces. Flux can be apply in any number of forms including flux paste, liquid, and powder or pre-made brazing pastes that combine flux with filler metal powder. The flux can also been like brazing rods with a coating of flux, or another name call flux core. In this case, the flux flows into the joint when the process to heat the joint and displaced by the molten filler metal to entering the joining. Excess flux must be removed when the cycle is completed because flux left at the joint can lead to became corrosion and prevent further surface finishing of brazing process. When the joining copper to copper can contain the brazing alloy can be self-fluxing. Generally, the flux can select base on their performance on particular base metals. The flux must be chemically compatible with the bas e metal and the filler metal brazing process. Self-fluxing phosphorus filler alloys can produce brittle phosphides if the material was iron or nickel. As a rule, a type cycles brazing should use less active fluxes for short brazing process. The materials for alloys are used as filler metals for brazing depend on application method. Braze alloys made up of 3 or more metals to form an alloy with the considered necessary properties. The filler metal can be chosen on its ability to: wet the base metals, melt at a lower temperature than the base metals or at a very specific temperature and withstand the service conditions required. Braze alloy been use in form as rod, ribbon, powder, paste, cream and wire. Depending on the application, the filler material can be pre-placed at the desired location or applied during the heating cycle. Wire and rod forms are generally used as they are the easiest to apply while heating in manual brazing process. In the case of furnace brazing, using material alloy can placed beforehand since the process is usually highly automated. The have many types of filler metals used are aluminium silicon, copper, copper phosphorus, brass, gold-silver, nickel alloy and silver.The high temperatures, oxidat ion of metal surfaces occurs in oxygen containing atmosphere from the brazing process. They may use other environment than air. The commonly used from the atmosphere like air, noble gas, and vacuum and combusted fuel gas. For combusted gas is nitrogen, hydrogen, carbon monoxide and oxygen. Torch brazing is used because the most common method of mechanized brazing. They are three types of torch brazing in use for example like manual, machine and automatic torch brazing. Manual torch brazing is a procedure want the heat is using a gas flame on the joint b. The torch can be on hand held or held in a fixed position depending on if the process is completely manual or has some level of automation. Machine torch brazing was use a repetitive braze process is being carried out. This method is a mix from automated and manual process with an operator often placing brazes material, flux and jigging parts on the machine mechanism carries out the actual brazing. The advantage by using machine torch brazing method is that it reduces the high labour and skill requirement was better that manual brazing. Automatic torch brazing is a method use the eliminates in brazing operation, except for loading and unloading of the machine. The advantages by using this method is had a high productio n rate, reduced operating cost and uniform braze quality. In this process, they have advantages and disadvantage. For advantages, brazing process was not melting the base metal of the joining, the brazing allows much tighter control over tolerances and produces a clean joint. Dissimilar metals and non-metals can be brazed. In general, brazing also produces less thermal distortion with another welding process. The process is complex and multi-part assemblies can be brazed cost-effectively. The brazing can be coated for protective purposes and easily to adapt on mass production. For disadvantages on the brazing process is the lack of joint strength as compared with another welding process was the softer filler metals is using. The strength of the joint is less that of the base metal but is greater than the filler metal. The brazing joints easily damaged on high temperatures. SOLDERING Soldering is definite a process combine two or more metal items are joint into one by melting and flowing a filler metal into the joining. The filler metal had a relatively low melting point. The soldering was soft characterized by the melting point of the filler rod and the temperatures are 752Ã Ã °F. They call solder in this process and by using the filler metal. Soldering was distinguished from brazing by use of a lower melting-temperature filler metal, it similar with the brazing. In a soldering process, they heat is on the parts of the joint, it causing the solder to melt and drawn into the joint. After the metal on cools, the resulting joints can see that not as strong as the base metal, but have adequate strength, water-tightness and electrical conductivity are good. The metallurgy of solders is presented some detail for the representative and predominant tin-lead system to overviews for important but less often used systems. The physical on solders are then described. The critical role of fluxes, their compositions and their physical forms are then described. Soldering can apply for assembling electronic components to printed circuit boards (PCBs). Another application is to joints the sheet metal objects for example food cans, roof flashing, rain gutters and automobile radiators. Jewellery are assembled and repaired by applying soldering process. Small mechanical parts are often soldered as well. Soldering can join lead came, copper foil in stained glass work and semi-permanent patch for a leak in a container or cooking vessel. Soldering can consider that the temperatures was so low, a soldered joint was limited service at elevated temperatures. Generally, the strength was should not be used for load-bearing members. For examples soldering applications include tin-lead, tin-zinc for joining aluminium, lead-silver for strength at higher than room temperature, cadmium-silver for strength in high temperatures, zinc-aluminium for aluminium and corrosion resistance, and tin-silver and tin-bismuth for electronics. The capacity material in soldering filler was many different alloys for differing applications. In electronics assembly, it was using the eutectic alloy of 63% tin and 37% lead. Other alloys are used for plumbing, mechanical assembly, and other applications. A eutectic formulation had advantages for soldering, the coincidence of the liquidus and solidus temperature. For quicker wetting as the solder heats up and quicker as call the solder cools. Additionally, the eutectic formulation had the lowest possible melting point, can minimize heat stress on electronic components during soldering. The solder was used in a soldered joint is selected to provide good wetting, spreading or flow, and joint penetration in the actual soldering operation and the desired joint properties in the finished product. A flux is intended to enhance the wetting of the base metal by the solder from precleaned surfaces and preventing the reformation of oxide or tarnish during the soldering operation. The select ion was depends on the ease with which a material can be soldering. Chemically was not aggressive or mild fluxes are used with solderable base metals. When chemically aggressive inorganic fluxes are usually used on metals are so difficult to wet, like stainless steels because of their Cr content. Chemically was reducing the gaseous atmospheres can be used to clean and subsequently protect precleaned joint elements in an assembly to be soldered. The joints that are enable to soldered should be designed and to permit application of flux. Joining should be designed properly to clearance is maintained between joint elements during the heating and cooling stages of the soldering operation. To maintain the alignment of joint components during the process, special fixtures may be necessary or the units of the assembly can be crimped, clinched, otherwise held together mechanically or by holding adhesives. The surface was an unclean will prevent the molten solder from wetting and spreading, making soldering difficult or impossible and contributing to poor joint properties. Flux can consider should not substitute for precleaning. Precleaning may remove the organic contaminants like grease, oil, paint, pencil marks, lubricants, coolants, and dirt, as well as inorganic films like oxides and other tarnish layers. Precleaning can involve any or all of the following three progressively vigorous methods for example like degreasing, pickling and mechanical cleaning. Precleaning can also be followed by a fourth step, precoating. All cleaning solutions can be thoroughly and remove before the soldering in progress. Precoating should be for metals that are difficult to solder because oxidize readily and, thus, can re-oxidize after precleaning if soldering is delayed too long. Precoating involves coating the base metal surfaces to be soldered with a more solderable and more oxidation-resistant metal or alloy before the soldering operation. Soldering can be performed with hand tools, one joint at a time on a production line. Hand soldering or manual soldering is typically performed with a soldering iron, soldering gun, or a torch, or occasionally a hot-air pencil. In Sheet metal work was use traditionally with soldering coppers directly heated by a flame, with sufficient stored heat in the mass of the soldering copper to complete a joint; torches or electrically-heated soldering irons are more convenient. All soldered joining required with the same elements of cleaning of the metal parts to be joined, fitting up the joint, heating the parts, applying flux, applying the filler, removing heat and holding the assembly still until the filler metal has completely solidified. It depending on the nature of flux material, the joints may be required after they have cooled. Distinction between soldering and brazing is arbitrary, based on the melting temperature of the filler material. Generally cannot achieve high enough temperat ures for brazing. Practically speaking there is a significant difference between the two processes, for example the brazing fillers have far more structural strength than solders, and are formulated for this as opposed to maximum electrical conductivity. Brazed connections are often as strong or nearly as strong as the parts they connect. Hard soldering or silver soldering was been performed with high-temperature solder containing up and it also often a form of brazing, since it involves filler materials with melting points in the vicinity. In silver soldering process was given a beautiful, structurally sound joint, especially in the field of jewellery. The power source of heat in induction soldering is heating by high-frequency AC current only. Some of metals are easier to solder than others like copper, silver, and gold. The more difficult material like iron and nickel because of their thin, strong oxide films, stainless steel and aluminium are even little more difficult. Titanium, magnesium, cast irons, steels, ceramics, and graphite can soldering but it involves a process similar to joining carbides. They are first plated with a suitable metallic element that induces interfacial bonding. Hand soldering tools include the electric soldering iron, the variety of tips available ranging from blunt to very fine to chisel heads for hot-cutting plastics, and the soldering gun, which typically provides more power, giving faster heat-up and allowing larger parts to be soldered. Soldering torches are a type of soldering device that uses a flame rather than a soldering iron tip to heat solder. Soldering torches are often powered by butane and are available in sizes ranging from very small butane/oxygen units suitable for very high-temperature jewellery work, to full-size oxy-fuel torches suitable for much larger work as copper piping. Common multipurpose propane torches, the kind used for heat-stripping paint and thawing pipes, can be used for soldering pipes and other fairly large objects either with or without a soldering tip attachment; pipes are soldered with a torch by directly applying the open flame. The soldering copper is a tool with a large copper head and a long handl e that can heated in a blacksmiths forge fire and apply heat to sheet metal for soldering. Typical soldering coppers had heads weighing between one and four pounds. The head provides a thermal mass, can store enough heat for soldering large areas between re-heating the copper in the fire. The larger the head, the longer the working time it affords. Conclusion The Soldering was similar like brazing, enables solid materials to be joined by using molten filler to flow into and fill the space between properly joint faying surfaces and then to solidify without required and causing melting of the base material. The liquidus of the filler in soldering is below the solidus of the base materials and below 4508C (8408F), by convention. Wetting and spreading of the filler by capillary action are then critical to proper distribution of the solder. The strength arises from a combination of metallic or other primary bonding. The principal reasons for soldering are to provide electrical connectivity and conductivity or leaktightness or hermeticity, as opposed to providing mechanical strength. They have similar and difference soldering with brazing. The brazing was similar like one of type of welding process by using gases. The soldering not using gases, just using electrical or manual like pre heat the flux.
Thursday, September 19, 2019
Hope in The Lesson, by Toni Cade Bambera Essay -- The Lesson
After reading Toni Cade Bambara's, The Lesson, the reader is left with a sense of hope for the first person narrator Sylvia and her friends. Following her and her friends from the slums of New York, to a Fifth Avenue F.A.O. Swartz, one gets an idea as to the kind of environment they came from, the type of education they received, and the sense of economic imbalance they bear witness to. Through this the antagonist, Miss Moore, is able to let the children evaluate for themselves the difference between the Fifth Avenue world and the one they are from, at an age where the impression made upon them might generate a spark of desire to find out how they might achieve the same rewards Fifth Avenue has to offer. The story is told from the point of view of the protagonist, first person narrator, Sylvia. Sylvia is a preteen African American girl, strong willed, intelligent, and the obvious leader of the pack. The story's plot involves a college educated black woman who comes back to an economically disadvantaged neighborhood on weekends and takes the local children on field trips of a sort. On this particular trip she lets the children experience their first ride in a taxicab to a toy store in Manhattan. It is played out through a chronological series of events from the time they leave their neighborhood, until the time they arrive back there. The exposition introduces the reader to, Sylvia, Miss Moore, Sylvia's friends, and the neighborhood. Sylvia's friends consist of a number of round characters, such as Junebug, Mercedes, Fat Butt, and Rosie Giraffe, as well as the stock characters Sugar, Q.T. and Junior. The setting is what seems to be a 1960' circa slum. As the story develops the reader gets a glimpse of Sylvia's ââ¬Å"street smar... ...lack of proper education in the poorer areas of the country, the need for parents to stand up and take responsibility for their children, and the inequality, and huge gap that exists between the rich and the poor in the United States today. The use of Sylvia as the protagonist gave the story a real quality to it. The world as seen through the eyes of a pre-teen, streetsmart kid, and the realization that there was still a lot to learn in an unfair world. Every character was well defined, and seemed to have a life of their own. It was a very easy to comprehend story which I believe should be a staple, if not requirement, in every urban public school Work Cited Bambara, Toni Cade. ââ¬Å"The Lesson.â⬠Literature and society: An Introduction to Fiction, Poetry, Drama, Nonfiction. Pamela J Annas and Robert C. Rosen. 4th Edition. Upper Saddle River, N.J 2007. P. 647-653
Tupac Shakur - Me Against the World Essays -- Music
Tupac Shakur - Me Against the World I was 13 years old. Anticipation thrilled my mind and body as the sea air wafted through the window. My best friend and I were nearing the beach and the mini-van we had inhabited for six hours felt as though it was closing in on us. Thoughts of the beach, the simplicity, and the freedom had controlled my mind for weeks, even months prior to our trip to the beach. Harnessing my recent hormone attack was still a challenge and images of tan girls plagued my mind. Then it happened. A song came on the radio that became my motto for the week; however even though that week ended, the artist never left my life. The voice I heard was that of Tupac Shakur and the song was "I Get Around." The lyrics of the song were boastful and egotistical. I loved it. With Tupacââ¬â¢s display of masculinity as my inspiration, my chances of picking up some of those tan girls were great. Unfortunately, I didnââ¬â¢t and my determined mission was in vein; however to this day Tupacââ¬â¢s music, spirit and camaraderie still gives me inspiration. At the end of that wonderful week we were forced to pack up and leave the freedom and the warmth of the beach. With me I took many memories, and a new tee shirt with the slogan "I Get Around" boldly written on the back. Years have passed. My best friend is still my best friend, but we rarely talk. Now, nearly nothing is quite the same. Friendships have passed; I've changed mentally and physically. Through all of the changes, Tupac has always been at my side. He elevates the highs in my life and illustrates the lows. Tupac Shaker is still influencing me, and I still own that tee shirt. I never lost touch with Tupac. I bought the album with "I Get Around," and I bought his preceding albu... ...ac. I'd lay on the warm sand, whip out my jackknife (headphones) and proceed to examine Tupac's music and life, down to its soul. I could rediscover his essence and get past the thuggish symbolic complex that is so often associated with Tupac. Although the shining serpent has departed this earth I am thankful that he brightens my world and eases my pain everyday. I think when my professor gave this assignment; he intended his class to contemplate for weeks about which CD we would listen to while wasting away on a desert island. What my professor didnââ¬â¢t understand was that Iââ¬â¢ve been wasting away for years, and I need this CD to survive, stranded or not. à Bibliography: Anson, Robert. "To Die Like a Gangsta." Vanity Fair: Mar, 1997: 244-252. Percy, Walker. "The Loss of the Creature." The Message in the Bottle. New York: Farrar, Srauss, Giroux, 1975: 46-63. Tupac Shakur - Me Against the World Essays -- Music Tupac Shakur - Me Against the World I was 13 years old. Anticipation thrilled my mind and body as the sea air wafted through the window. My best friend and I were nearing the beach and the mini-van we had inhabited for six hours felt as though it was closing in on us. Thoughts of the beach, the simplicity, and the freedom had controlled my mind for weeks, even months prior to our trip to the beach. Harnessing my recent hormone attack was still a challenge and images of tan girls plagued my mind. Then it happened. A song came on the radio that became my motto for the week; however even though that week ended, the artist never left my life. The voice I heard was that of Tupac Shakur and the song was "I Get Around." The lyrics of the song were boastful and egotistical. I loved it. With Tupacââ¬â¢s display of masculinity as my inspiration, my chances of picking up some of those tan girls were great. Unfortunately, I didnââ¬â¢t and my determined mission was in vein; however to this day Tupacââ¬â¢s music, spirit and camaraderie still gives me inspiration. At the end of that wonderful week we were forced to pack up and leave the freedom and the warmth of the beach. With me I took many memories, and a new tee shirt with the slogan "I Get Around" boldly written on the back. Years have passed. My best friend is still my best friend, but we rarely talk. Now, nearly nothing is quite the same. Friendships have passed; I've changed mentally and physically. Through all of the changes, Tupac has always been at my side. He elevates the highs in my life and illustrates the lows. Tupac Shaker is still influencing me, and I still own that tee shirt. I never lost touch with Tupac. I bought the album with "I Get Around," and I bought his preceding albu... ...ac. I'd lay on the warm sand, whip out my jackknife (headphones) and proceed to examine Tupac's music and life, down to its soul. I could rediscover his essence and get past the thuggish symbolic complex that is so often associated with Tupac. Although the shining serpent has departed this earth I am thankful that he brightens my world and eases my pain everyday. I think when my professor gave this assignment; he intended his class to contemplate for weeks about which CD we would listen to while wasting away on a desert island. What my professor didnââ¬â¢t understand was that Iââ¬â¢ve been wasting away for years, and I need this CD to survive, stranded or not. à Bibliography: Anson, Robert. "To Die Like a Gangsta." Vanity Fair: Mar, 1997: 244-252. Percy, Walker. "The Loss of the Creature." The Message in the Bottle. New York: Farrar, Srauss, Giroux, 1975: 46-63.
Wednesday, September 18, 2019
The Character of Chief Bromden in Ken Keseys One Flew Over the Cuckoos Nest :: One Flew Over Cuckoos Nest
Chief Bromden, a tall American-Indian mute is the central character that symbolizes the change throughout the text and also throughout society. Ken Kesey's One Flew Over the Cuckoo's Nest uses this character that is subject to change as the narrator event though his perceptions cannot be fully trusted. Ã Initially the ward is run as if it was a prison ward, but from the moment the brawling, gambling McMurphy sets foot on the ward it is identified that he is going to cause havoc and provide change for the patients. McMurphy becomes a leader, a Christ like figure and the other patients are his disciples. The person who is objective to listen to his teachings at first is Chief Bromden (often called Bromden), but then he realizes that he is there to save them and joins McMurphy and the Acutes (meaning that they have possibility for rehabilitation and release) in the protest against Nurse Ratched, a bureaucratic woman who is the protagonist of the story, and the `Combine' (or society). Ã Chief Bromden hallucinates the fog machine and Air Raids. They represent his mental clarity, it comes when he is less stable and recedes when he's more coherent. That is the first noticeable change by Bromden because of the receding hallucinations when McMurphy enters the ward; McMurphy usurps his power to change through charisma. Ã By chapter 7 there is a small but subtle change to Bromden, he decides to go to sleep without taking the little red capsule, it seems as though he wishes to follow McMurphy. McMurphy is not taken in, by the `Combine' so Chief Bromden thinks by not taking the capsule he can perhaps escape the `Combine' and its power. Although he has a rather gruesome dream, whereby he sees one of the other patients, Blastic, being hung up on a hook and cut open. He thinks Blastic is being used as an experiment. Then Turkle, the night guard wakes Bromden. It is understood by the responder that Bromden has been taking the red capsule for a long time and suddenly to go `Cold Turkey', that is why he had such a wild dream. It does not definitely mean that he is crazy. Ã The vote for the change in schedule, so the patients could watch the World Series is a turning point for Bromden, as it's the first time he reasserts himself as a functioning person.
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