• 제목/요약/키워드: Production practice

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Production and Inventory Management Using Multiple Objective Decision Making

  • Chung, Tae-Young;Kim, Soung-Hie
    • 한국국방경영분석학회지
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    • 제17권1호
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    • pp.84-104
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    • 1991
  • Up to the present, the evaluation measures in the production and inventory management have been studied under the pre-condition that the costs for major factors(e.g,. cost of carrying inventory, cost of demand shortage) are given easily, although in practice, it is difficult. The case in which multiple participants have a different viewpoints in production and inventory management has not been studied, in spite of its frequent occurrence. This study suggests a production and inventory model with multiple objectives corresponding to major factors and the related interactive algorithm based on the preference structures of participants. The problem can be solved through a weighting vector generated by an interaction with participants. The concept of equity is also used in order to guarantee the reasonable distribution of group utility in determining the individual relative weights of participants. This study includes the reality of the model and the decision process in the production and inventory management.

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Development of the Practical and Adaptive Three steps Die for Sheet Metal Working(part 1) (Analysis of Production Part and Strip Process Layout Design)

  • Sim, Sung-Bo;Song, Young-Seok;Sung, Yul-Min
    • 한국공작기계학회:학술대회논문집
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    • 한국공작기계학회 2000년도 춘계학술대회논문집 - 한국공작기계학회
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    • pp.224-228
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    • 2000
  • The piercing and blanking of thin sheet metal working is specified division in press die design and making. In order to prevent the detects, the optimum design of the production part, strip process layout, die design, die making and try out etc. re necessary the analysis of effective factors. For example, theory and practice of metal shearing process and its phenomena, die structure, machine tool working for die making, die materials and its heat treatment, metal working in industrial and its know how etc. In this study, we analyzed whole of data base, theoretical back ground of metal working process, and then performed the progressive die tryout with the screw press. This study regards to the aim of small quantity of production part's press working. Part 1 of this study reveals with production part and strip process layout design.

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합성 PC 부재의 현장생산 및 설치 공정계획의 영향요소 분석 (An Analysis of Influence Factors on Insitu-production and Installation Schedule of Composite Precast Concrete Members)

  • 임채연;김선국
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2013년도 춘계 학술논문 발표대회
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    • pp.176-177
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    • 2013
  • The composite PC rahmen structure, called Green Frame, allows the main structural members such as PC column and beam to be produced on the site, resulting in a reduction of PC member transportation cost and the margin of PC plant (operation cost and profit), making it more economic than the bearing wall structure. To apply the Green Frame to practice, not only installation but also insitu-production process should be considered. Therefore, this study analyse the influence factors on insitu-production and installation schedule of composite precast concrete members. The results shall be used as basic criteria on the planning of insitu-production and installation of Green Frame.

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근로자의 산업보건에 대한 지식$\cdot$태도$\cdot$실천 조사 연구 (A Study on Industrial Worker's Knowledge, Attitude and Practice about Occupational health - Chonbuk Province -)

  • 서인선;안옥희
    • 한국보건간호학회지
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    • 제8권1호
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    • pp.63-72
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    • 1994
  • The purpose of this study was to estimate the industrial worker's knowledge, attitude, and practice about occupational health and to provide the basic data for the development of industrial health services. The study was undertaken from January 15 to January 30, 1993. 549 industrial workers at the Industrial Complex located in Chonbuk Province were participated in this study. The results were as follows; 1. The Knowledge, Attitude and Practice leveles of Workers about Occupational Health. The levels were measured by five point scale. The mean score of knowledge was 2. 59 point out of 4. The mean score of attitude was 2.37 point out of 4. The mean score of practice was 2. 38 point out of 4. 2. The analysis of their knowledge" attitude, and practice about general characteristics. 1) There was significant difference among different age groups. $(P{\leqq}0.0001)$ -. The group of age 25-29 was the highest value in knowledge and attitude. -. The group of age over 50 was highest value in practice. 2) There was significant difference between sexual groups in all items. -. Male workers were higher than Female workers in all items. (P=0.0000) 3) There was significant difference according to the marital status in all items. -. Married workers were higher than Single workers in all items. (P = 0.0000) 4) There was significant difference among different groups of educational level in attitude and practice. (P<0.05) The value was positivly correlated to their educational level. 5) There was significant difference among the groups of job-part in knowledge and practice. (P=0.000, P=0.031) -. Office workers were higher than Production workers in all items. 6) There was significant difference among different group of job experience in knowledge and attitude. (P=0.0000. P=0.0387) The value was positively correlated to the years length of job experience. 7) There was significant difference among the groups of different monthly income in all items. (P=0.000) The value was positively correlated to their monthly income.

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GT/MRP 시스템에 의한 생산일정계획(生産日程計劃)의 합리화(合理化)에 관한 연구(硏究) (A Study on GT/MRP System for Production Scheduling)

  • 신현표;정기원
    • 품질경영학회지
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    • 제13권1호
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    • pp.65-76
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    • 1985
  • The purpose of this thesis is to develop a micro-computer application for GT/MRP (group technology/material requirement planning) integrated system for efficient management of production scheduling. GT and MRP system have been found to have several drawbacks in practice. By GT and MRP system, however, it should be able to construct a GT/MRP integrated system that possesses the advantages of both concepts while alleviating their individual limitations.

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International Trends of Good Agricultural Practice(GAP)

  • Lee, Ju-Young;Park, Jin-Han
    • Journal of Evidence-Based Herbal Medicine
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    • 제1권1호
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    • pp.19-28
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    • 2008
  • Consumers have been requiring more higher level of food and agricultural products safety. The system of Good Agricultural Practice(GAP) has been spreaded over the world. Korea also introduced the GAP system in agricultural industry. GAP is related to the production side in the whole traceability system. The establishment of GAP system is a prerequisite to secure food safety. This study reviewed the concept of GAP and necessities and backgrounds of introducing the GAP system. Also, this study analyzed the problems which have been appeared in the GAP program and proposed the policy strategies and directions for the Korean GAP system. So issues for the GAP system are as follows; computerizing of traceability system, forming the cooperative works among the related governmental departments, establishing a certification system to relate with crop features, efficient management, ensuring distribution channel and the research for estimating GAP consumer surplus is need to analyze GAP program more efficient. In addition, It is necessary to keep the records of the data to analyze the GAP program more accurately.

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Application of Growth Models for Pigs in Practice -Review-

  • van der Peet-Schwering, C.M.C.;den Hartog, L.A.;Vos, H.J.P.M.
    • Asian-Australasian Journal of Animal Sciences
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    • 제12권2호
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    • pp.282-286
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    • 1999
  • Growth of pigs is influenced by many factors. To assist pig producers in the evaluation of alternative feeding and management strategies growth models have been developed. In the Netherlands the Technical Model Pigfeeding (TMV) is developed. This model predicts the influence of feed intake, feed composition, genotype, sex and climate on growth, body composition, gross margin and mineral excretion of healthy growing/finishing pigs. The purpose of TMV is to support information services, feed companies, researchers and students. In addition to providing accurate predictions, a model should also be user-friendly and wishes of the user should be taken into account to stimulate application of the model in practice. In this paper, the theoretical background of TMV and a methodology to stimulate application of models in practice will be described.

Instruction Effects of Teaching Relative Clauses on Comprehension and Production in Korean EFL Classes

  • Chu, Hera
    • 영어어문교육
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    • 제18권1호
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    • pp.23-43
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    • 2012
  • This study investigates the effects of three different types of instruction, namely form-based, comprehension-based, and production-based on the development of Korean university students' (n=137) comprehension and production of English relative clauses (RCs). The extent of improvements was analyzed by administering pre-and post-tests consisting of two comprehension tests (selecting the right form of RCs and the right picture descriptions) and one production test (combining two sentences). Findings of this study suggest that all three types of instruction increased participants' comprehension and productions of RCs. However, there appeared differential effects by the instruction type. It was found production-based instruction was most effective in promoting comprehension, followed by comprehension-based instruction. Comprehension-based instruction worked best with the development of production, suggesting that the effects of comprehension training did not only work for increasing comprehension skills, but also transfer to production skills. The type or level of tasks employed for each instruction appeared to play an important role in causing such results. Form-based instruction displayed the lowest improvements in both comprehension and production of RCs. A sentence-combination task employed for form-based instruction appear to result in mere explicit rule explanations without chances to notice rules in context or use their knowledge in practice.

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온택트 시대의 졸업학년 간호대학생이 경험한 온라인 비대면 성인간호학실습에 대한 내용분석 (Content analysis on online non-face-to-face adult nursing practice experienced by graduating nursing students in the ontact era)

  • 임소희
    • 한국산학기술학회논문지
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    • 제22권4호
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    • pp.195-205
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    • 2021
  • 코로나19가 대유행이 되면서 국내 대부분의 간호학과에서는 기존의 실습방법이 아닌 온라인 비대면 실습을 시행하였다. 본 연구는 온라인 비대면 성인간호학실습 과정에서 경험하는 내용을 이해하고자 참여자들이 작성한 성찰일지를 분석한 질적연구이다. 연구 참여자는 일개대학 간호학과 졸업학년인 4학년 재학생 중 본 연구의 목적을 이해하고 참여에 동의한 45명이다. 온라인 비대면 성인간호학실습은 2학점 90시간으로, 1일 9시간씩 총 10일 운영되었다. 본 온라인 성인간호학실습은 컴퓨터 기반 시뮬레이션실습, 컴퓨터 기반 간호술기실습, 동영상 및 교육자료 제작, 실시간 온라인 퀴즈와 온라인 강의영상시청, 토론 등으로 구성되었다. 성찰일지를 분석한 결과, 6개의 범주, 13개의 주제모음, 33개의 주제가 도출되었다. 6개의 범주로는 '다양한 상황경험', '새로운 학습의 경험', '임상실습에 대한 성취감', '교수자와의 관계형성', '비대면 실습에 대한 양가감정', '예비간호사에 대한 두려움'으로 진술되었다. 본 연구는 포스트 코로나 시대를 준비하는 교육현장에서 성인간호학실습이 임상실습기관이 아닌 비대면 실습으로 진행하여 다양한 교육방법으로 운영하고 분석하였다는 데에 의의가 있다. 본 연구는 비대면 성인간호학 실습개발 및 운영의 중요한 기초자료가 될 것을 기대한다.

생육밀도가 쪽동백나무 유묘의 물질생산량과 생장특성에 미치는 영향 (The Effect of Seedlings Density in Nursery on Biomass Production and Growth Characteristic of Styrax obassia)

  • 최정호;유세걸;이수원;오석귀
    • 생물환경조절학회지
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    • 제16권3호
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    • pp.217-221
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    • 2007
  • 다양한 활엽수 자원의 개발에 필요한 기초자료를 제공하고자 쪽동백나무 유묘의 생육밀도에 따른 물질생산량과 생장특성 등 최적의 생장조건을 조사하였다. 묘목의 생육밀도는 수고생장에 크게 영향을 미치는 중요한 요인이 될 수 있으며, 본 실험 결과 쪽동백나무의 $1m^2$당 생육 밀도에 따른 묘목의 생장은 49본구에서 간장과 근원직경이 우수한 생장량을 보인반면 생육밀도가 낮은 처리구는 근원직경 생장이 증가하면서 간장생장은 떨어지는 경향을 보였다. 물질생산량 또한 생장 특성과 마찬가지로 $1m^2$당 49본구 처리구에서 전체 물질생산량이 통계적으로 유의적인 차이를 보이면서 $3.12{\pm}0.80g$로 다른 처리구보다 높은 물질생산량을 보였고, T/R율에서도 1.59로 나타났다. 생리적 특성으로 광합성률 또한 쪽동백나무의 경우 $1m^2$$49/m^2$ 본구와 $64/m^2$ 본구에서 상대적으로 높은 광합성률을 보였고 밀도가 높아질수록 광합성 효율이 떨어지는 결과를 나타냈다. 이는 생육 환경조건에서 적절한 공간 확보가 궁극적으로 최종 물질대사 작용인 광합성률 변화에서 최적의 상태를 보이면서 생리적으로 안정된 생장형태를 보이는 것으로 판단되며, 적정 공간의 장애가 실질적인 생장저하를 발생시키고, 궁극적으로 물질대사의 최고 단계인 광합성효율 또한 낮아지는 경향을 나타냈다.