• 제목/요약/키워드: Work-Shop

검색결과 225건 처리시간 0.027초

선박용 디젤기관의 주철부품 보수용접 특성에 관한 연구 (A Study on Characteristics of Repair Welding for Cast Iron Part of Diesel Engine for Ship)

  • 강명신;김진경;김영식
    • 한국해양공학회:학술대회논문집
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    • 한국해양공학회 2004년도 학술대회지
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    • pp.283-287
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    • 2004
  • Arc welding is sometimes used to repair damaged cast iron parts in diesel engine for driving a ship. In this case cola arc welding. is good for. saving the time and results in good repairing. But if some difference in hardness on welding zones made with AWS E Ni-CI and NiFe-CI. happen, repaired parts would be cracked in a short. In order to overcome this default, the study is performed on varying preheating temperature of welding parts, selecting welding rod and welding work way. The result will be used on ship's repair working shop.

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선박용 디젤기관의 주철부품 보수용접 특성에 관한 연구 (A Study on Characteristics of Repair Welding for Cast Iron Part of Diesel Engine for Ship)

  • 김진경;강명신;김영식
    • 한국해양공학회지
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    • 제20권2호
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    • pp.41-45
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    • 2006
  • Arc welding is sometimes used to repair damaged cast iron parts in diesel engine for driving n ship. In this case cold arc welding is good for saving the time and results in good repairing. But if some difference in hardness on welding zones made with AWS E Ni-CI and NiFe-CI happen, repaired parts would be cracked in a short. In order to overcome this default, the study is performed on varying preheating temperature of welding parts, selecting welding rod and welding work way. The result will be used on ship's working shop.

능력 중심 교육의 가치가 공업계 고등학교 교육의 운영 개선에 주는 시사점 (Suggestions for Improvement of Industrial High School Education Based on the Value of Competency-Based Education)

  • 김희필
    • 대한공업교육학회지
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    • 제30권2호
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    • pp.33-44
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    • 2005
  • The purpose of this study is to suggest plans to improve the industrial high school through the inquiry of Competency-Based Education(CBE). The suggestions are as followings: (1) Selection and organization of the educational contents of industrial high school must be based on job analysis. (2) Instructional objectives must be defined as a performance objective and enabling objectives. (3) Instruction must be individualized in method, the instructional contents must be organized in the unit of module. (4) Evaluation system must be not knowledge based but performance-based. (5) Physical Environment of work shop must be organized based on facilities, equipments and machines abstracted by job analysis. (6) Competency-Based Teacher Education(CBTE) program is required to train competent teachers in practice.

다단계 병렬기계(多段階 竝列機械) 흐름생산에서 JIT 일정계획 (A JIT Production Scheduling in Multi-Level Parallel Machine Flow Shops)

  • 유철수;이영우;정남기
    • 산업공학
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    • 제7권3호
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    • pp.171-180
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    • 1994
  • Defined is a Multi-level Parallel Machine Flow-Shop (MPMFS) which reflects some real world manufacturing situations. Just-In-Time (JIT) philosophy is applied to the MPMFS scheduling in order to achieve lowering work-in-process inventory level as well as meeting due dates. A schedule generating simulator is developed. The latest start time of each operation is determined by a backward simulation followed by another forward simulation to analyze the schedule feasibility and actual inventory level. Reasonable schedules are available through adjusting some parameters for allowance factors such as set-up times of machines and other environmental changes. The SLAMSYSTEM under Window is employed for this processing with some input/output data handling processes devised under DOS.

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인터넷 기반 유통경로에 대한 소비자인식의 변화에 관한 실증적 연구 (A Empirical Study on the Changed Consumer Perception to Internet Based Channel)

  • 정기수;문승제
    • 산업융합연구
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    • 제1권1호
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    • pp.143-157
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    • 2003
  • This paper examines the changed consumer perception to internet based channel. Internet based channel has time merit, place merit, assortment merit, compatibility merit, and so on. For seller, in the mean while, it has merits in the way of diminishing physical distribution cost, promotion cost, and reaching globally in the same time. In spite of so many merits of internet based channel, there were many types complain in past. Most of all, consumers expect that it will provide low-price merit to consumer, because it doesn't need shop, warehouse, stock, etc. Based on the empirical analyses in past, it didn't work, especially to price oriented consumer's perception. But in this research, it shows changing consumer's perception. Comparing past data with current data, we found outstanding gross in price related variables figure. But, in goods delivery related factors and personal credit information related factor, consumer recognized much more negatively yet. So, we conclude that even though some factors show improved perception, there are tasks to solve. We will observe the tuning point at that time.

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INCORPORATING CONTEXT LEVEL VARIABLES TO IMPROVE OPERATION ANALYSIS IN STEEL FABRICATION SHOPS

  • Amin Alvanchi;SangHyun Lee;Simaan M. AbouRizk
    • 국제학술발표논문집
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    • The 3th International Conference on Construction Engineering and Project Management
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    • pp.1053-1059
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    • 2009
  • Construction system modeling can enhance work performance by following the behaviors of a system. System behaviors may originate from physical aspects of a system, namely operation level variables, or from non-physical aspects of a system known as context level variables. However, construction system modelers usually focus on only one type of system variable (i.e., operation level or context level) which can lead to less accurate results. Hybrid modeling with System Dynamics (SD) and Discrete Event Simulation (DES) is one of the approaches that has been utilized to address this issue. In this research, an SD-DES hybrid model of a steel fabrication shop is developed, and the benefits of capturing context level variables together with operation level variables in the model are discussed.

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수도권 윈도우 베이커리 매장근무자와 공장근무자의 위생 교육, 위생 지식과 위생 관리 현황에 관한 연구 (A Research on the Sanitary Education, Knowledge and Management Level of Shop Employees and Workplace Employees Working at Window Bakeries in the Metropolitan Area)

  • 황윤경;안혜령
    • 한국조리학회지
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    • 제20권1호
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    • pp.159-177
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    • 2014
  • 본 연구는 수도권 윈도우 베이커리의 매장근무자와 공장근무자의 위생교육, 위생 지식 및 위생관리 수행 수준을 조사하여 윈도우 베이커리 위생관리 현황을 파악하고자 하였다. 윈도우 베이커리 근무자를 매장과 공장 근무자로 분류하여 위생 교육 현황을 파악하였고, 위생 지식수준과 위생 관리 수행 수준을 직급, 근무연한, 위생 교육횟수에 따라 분석하고, 이 결과를 개인위생, 시설 및 작업장 위생, 재료 및 제조 위생으로 나누어 비교했다. 연구결과를 요약하면 다음과 같다. 첫째, 윈도우베이커리 근무자들은 1년에 3회 이하로 위생교육을 받고 있었으며, 위생 관리 수행 수준은 공장근무자가 매장근무자보다 평균이 높았다. 둘째, 위생지식수준의 경우 매장근무자는 재료 및 제조위생에서 대표와 근무기간이 5년 이상인 경우 낮게 나타났으며, 공장근무자는 공장장과 인턴, 근무기간이 5년 이상인 경우 낮았다. 셋째, 위생관리 수행수준의 경우 매장근무자는 인턴과 근무 1년 미만인 경우 수행수준이 낮았고, 공장근무자는 직급과 근무기간에 따라 유의한 차이는 없었다. 위생교육을 받지 않은 경우 매장근무자는 전반적으로 수행수준이 낮았고, 공장근무자는 재료 및 제조위생에서 수행수준이 유의하게 낮았다. 따라서 향후 윈도우 베이커리 매장과 공장 근무자들을 위한 업무에 따른 위생 교육 매뉴얼을 작성하여 지속적인 위생교육과 모니터링이 필요하다.

시뮬레이션 기법을 이용한 철도차량 중정비 공장 설계검증 - 디젤동차 및 발전차 중정비 공장을 중심으로 - (An Evaluation of Development Plans for Rolling Stock Maintenance Shop Using Computer Simulation - Emphasizing CDC and Generator Car -)

  • 전병학;장성용;이원영;오정헌
    • 한국시뮬레이션학회논문지
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    • 제18권3호
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    • pp.23-34
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    • 2009
  • 철도차량기지에서는 철도차량의 안전한 운행을 위해 연간검수 이상의 기기보전(지정보전, 장치보전), 차체 보전을 위한 장기계획에 의해 종합적인 유지보수 혹은 중대사고에 의한 차량의 파손으로 인한 차량의 보수작업이 이루어지는 중수선 작업을 수행한다. 본 연구에서는 용산기지 이전과 관련하여 대전철도차량관리단 부지 내에 계획 중인 CDC(Commuter Diesel Car)와 발전차를 정비하는 중수선 시설의 설계안에 대한 검증을 위한 시뮬레이션 모델을 개발하고 시뮬레이션 실험을 통하여 중수선 시설의 용량을 검증하였다. 시뮬레이션 모델은 철도공사의 중정비 검수공정도를 바탕으로 2가지 설계안의 설계용량을 검증하였다. 2가지 설계안을 평가하기 위하여 검수 완료 차량, 재장일, 작업장 점유율, 공정진행 차량수 및 입장검사 대기차량수 등 5가지를 분석하여 연간 검수용량이 충분한 설계안을 선정 하였다. 또한 우수한 결과를 보인 설계안의 연간 최대 검수 가능한 차량 수는 현재 연간 검수량 보다 약 15% 많은 총 340량임을 확인할 수 있었다.

미용사의 직무만족도와 직업관 (Beauty Shop Workers' Views of Job)

  • 오애자;남철현
    • 한국학교ㆍ지역보건교육학회지
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    • 제2권1호
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    • pp.67-84
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    • 2001
  • This study was conducted to examine beauty shop workers' views of job. Data were collected from the workers in Seoul, Daegu, Pohang, Junjoo, and Kimhae from June 1, 2000 to August 31, 2000. The results of this study are summarized as follows. 1. According to general characteristics of the subjects, 28,7% of them was female; 94.2% 'specialized in hair'; 46.4% 'below twenty nine years old'; 47.1% 'married'; 59.7% 'highschool graduate'; 33.9% 'worked for below three years'; 28.5% 'monthly income of five hundred thousand to nine hundred ninety thousand won'; 62.3% 'working for above twelve hours a day' ; 41.0% 'above five workers' ; 40.6% 'working in city'. 2. 54.8% of the respondents thought that they were in good health. 76.3% of them smoked and 54.8% drank. 62.8% of them did not exercise and 78.7% was under stress. 61.5% responded that they chose the job because of its possibility of professional vocation. 91.0% of them obtained the beauty skill from beauty schools. 3. Among the factors which influenced job satisfaction, 'stable job and life security' was highest(43.9%), while 'interest in the job and amount of pay' was lowest(3.2%). 'Personal ability and use of originality' was 19.4% and 'harmonious relationship with fellow workers' was 18.1%. 'Job environment' was 7.1% and 'harmonious relationship with higher workers' was 4.5%. 4. The level workers' view of job was $113.8{\pm}17.3$ points on the basis of 150 points. On the basis of 75 points, each item showed it points in order of self-development($22.3{\pm}3.8$), service for customers($20.1{\pm}3.1$), vocational mission($15.6{\pm}3.1$), harmony with the others($18.9{\pm}3.5$), working environment($18.6{\pm}3.6$), and working condition($14.3{\pm}5.1$). 5. Among the reasons why they considered leaving the job, 24.0% of them considered it because they could not free time, while 15.4% considered it because undesirable living environment or long distance from home. 15.0% thought it because they could not receive proper treatment as much as they worked and 12.8% thought they overworked. 6. When they move into new working places, they consider such factors as good working environment(24.1%), good place to open their own beauty shops(16.7%), good beauty shop to learn beauty skill(15.6%), chance to have job training(9.5%), and close place from home(9.0%). 7. 40.6% of the respondents wanted to leave the job, while 32.3% of them did not want to leave the job. The intention of leaving the displayed significant difference in the variables of age, working period, monthly income, marital status, the number of workers, location of the shop, rank, and reason of selecting the job. 8. According to the results of a regression analysis of factors which influenced job satisfaction, it was affected significantly by intention of leaving job, the number of workers, health condition, level of stress, and monthly income. The beauty shop workers showed low satisfaction level with working environment, working condition, and working mission, They considered leaving the job because of lack of free time, overwork, poor working environment, improper treatment, etc. Therefore, related professionals and organizations must device adequate measures in order to make them work with pride as creators of beauty.

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선체설계와 의장설계간의 정보인터페이스 기법 연구 (Establishment of Information Interface Technology between Hull and Outfitting Designs)

  • 최영태;서흥원;이순섭
    • 대한조선학회논문집
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    • 제50권6호
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    • pp.458-465
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    • 2013
  • Ship design engineering refers to the development and design of shipbuilding architectures in a drawing which reflects all relevant manufacturing processes. This paper provides analysis methods for model-information interfaces between hull structure design and outfitting design, and a technical application for manufacturing phases reflecting the pipe support pad and angle item automatically. The existing information procedure of pipe support pad and angle system processes information using drawing without model specification. Outfitting design team directly distributes drawings to the shop floor then manual-based marking and installation work are conducted refer to the distributed drawings. As a result, this process has become time consuming and causes problems in the productivity and quality improvement due to the rework caused by omitted or incorrect marking. The pipe support pad and angle marking is a method that automatically updates model information to hull structure design using sets of data that analyse the generated model in outfitting design processes. Therefore, this approach provides an efficient solution through design references without manual activities such as a reflection of hull structure design, cutting process, numerical control work, and dimension measurement and marking. The conversion of a method from the existing procedure based on manual marking to the reflective and automatic approach would have enabled to proceed installation work without manual activities for the measurement. Therefore, this research study proposes an efficient approach using pre-data analysis of model information interfaces between design and manufacturing phases to improve productivity during construction for shipbuilding.