• 한국유기농업학회지
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• 제2권1호
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• pp.16-23
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• 1993

The traditional farming method has very long history in the process of agricultural development. The application of chemical fertilizers production became most popular to increase quantities of agricultural production. The United States of America is one of largest countries in the world. There are at present 50 States and farming conditions are very different from each individual States. There are increasing trend of agricultural production by applying chemical fertilizers as well as sprays during last 50 years(1940-90). The disadvantages of conventional farming method were to destroy nature and human life. There were some other kinds of disadvantages such as nitriated contamination in drinking water both for human being and animals. The alternative farming method is one of new farming method reducing and/of non-application of chemical fertilizers and sprays in agricultural production. There is less economic research on alternative farming system about $5.444 economic advatages in organic farms comparing commercial farms at the same area. There are advantage of higher unit price level in orgnic products, decreasing chemical costs as well as effect of crop combinations. It is certainly necessary to have more empirical research on economic and management of alternative farming method in the United States of America. However, if there is economic advantage in alternative farming methods, the future development possibility of alternative farming method can be very bright in vear future. There might be more advantages such as soil conservation, better quality of agricultural products, better health conditions of farmer's and consumer's as well as keeping healthy environment of rural and urban areas.

• 산업노동연구
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• 제17권1호
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• pp.1-36
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• 2011

대안적 작업조직을 둘러산 다양한 주장과 논쟁이 단위조직 사례연구를 토대로 이론적 개념적 차원에서 제기되어 왔으나 정작 노동자 관점에서의 양적 검증은 상대적으로 부족했다. 이 글은 한국직업능력개발원의 인적자본 기업패널 제조업 자료를 이용하여 대안적 작업조직의 대표적 형태로써 테일러 방식과 린 방식, 자율팀 방식을 유형화한 후 각각 조직의 재무적 성과와 노동자 성과에 어떤 영향을 미치는지 분석하고자 하였다. 특히, 국내 제조업의 경우 린 방식의 대표적 특성인 QC, 제안활동 등의 개별참여 관행이 확산되고 있다는 측면에서, 린 방식을 준거로 사회기술체계의 특성을 고려한 자율팀과 테일러 방식을 비교 분석하였다. 분석 결과, 대안적 작업조직으로써 린 방식과 자율팀 방식이 테일러 방식에 비해 조직성과 뿐만 아니라 노동자 개인의 성과측면에도 보다 긍정적인 것으로 파악되었다. 그러나 린 방식과 자율팀 방식간 비교에서는 조직성과에 미치는 영향은 통계적으로 유의한 차이를 보이지 않은 반면, 노동자 개인의 성과로써 노동시간, 소득, 직무만족도, 조직몰입의 모든 결과변수에 대해 린 방식이 자율팀 방식에 비해 일관된 부정적 영향을 미치는 것으로 파악되었다. 린 방식이 품질개선과 조직성과 향상을 위한 우월한 작업조직이라는 주류적 공감에도 불구하고, 그와 같은 기제의 이면에는 드러나지 않았던 노동자 개인의 성과가 훼손되었을 가능성을 시사하였다.

• 한국정보시스템학회지:정보시스템연구
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• 제17권4호
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• pp.301-319
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• 2008

The display market has been replaced by the FPD (Flat Panel Display) from the CRT (Cathode-Ray Tube) since the late 1990s. In the FPD production line, the most equipment has high price. Thus, when the equipment has multi-function, the repetitive process is arranged for the equipment. However, such disposition of equipment results in more complicated process flow owing to repetitive operations. This reduces the production capacity and increases lead-time in turn. In this paper, we develop an AutoMod simulation system that derives to information about the quantity, production lead-time, utilities of facilities, and occupation rates of racks. In this simulation system, we consider the situation where the equipment might be broken and suspended randomly. For the developed system, we first evaluate a production plan with current layout and then, propose a revised alternative plan. Using the same simulation scheme, we investigate comparing the production quantity and lead-time with the two plans. In addition, for a proposed alternative, we try to forecast the most adequate rule between the two job dispatching rules which are FOR (Fewest Operation Remaining) and FCFS (First Come First Serve) through simulation.

• Management Science and Financial Engineering
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• 제6권1호
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• pp.37-63
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• 2000

An important objective of pull-based production control is to achieve synchronized and smooth production flow in a multi-stage system that is subject to uncertainty. To our knowledge, previous research has not generated a performance measure that captures this objective of pull-based probased production control system. This performance material with respect to the instant when the operation is required. We examine the issue of asynchronous waste in a two-stage kanban control system.

• 경영과학
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• 제10권2호
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• pp.61-77
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• 1993

This paper involves a study of developing the production scheduling system in a general job shop type mechanical factory. We consider realistic situations in the job-shop environments, such as alternative machines for operation, the new kinds of processes, the machining center with the plural pallet, the operational situation of each machine during the scheduling period, occurings of urgent orders and machine breakdowns. We also propose the methodology of re-schedule. It is very fast and acceptable for real time production control system. These all functions are implemented on IBM PC and program source is written in PASCAL language.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.551-562
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• 2022

The building production system has been analysed by the dichotomy "employer-contractor" relationship, which failed to take into account of the role and function of multiple stakeholders within the life-cycle supply chain. This is further observed in the current conflict resolution model, which, in my argument, struggles to contribute to industrialize the building production and achieve better efficiency and effectiveness as expected. The purpose of this paper is to critically assess the issues of current programme-based conflict resolution model, and discuss alternative models how they can be modelled and applied to the construction projects. The conclusions of findings are; First, the current model is framed around the contracts and dispute resolutions based on the legal concept of "claimant and respondent" where one party(s) advances a claim once and the other(s) objects, as such it fails to reflect the nature of construction projects where multiple stakeholders are involved concurrently and for a long period of life-cycle of buildings. Second, an alternative is "Six-stakeholders model" which represents the multiple stakeholders and clarifies the flow of obligation-liability-monetary relationships among participants for a long period of life-cycle of buildings. Further, with reference to both historical and recent cases, a reflection and insight into pros and cons of programming method is added, especially as to why this method is considered to have become a mandate of the modern construction management, and how academics and practitioners should deal with it more cautiously and prudently.

• 한국산업융합학회 논문집
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• 제4권3호
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• pp.339-347
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• 2001

Automatic automobile has been studied as the alternative energy system and the production flow automation device recently. But this is dependent on the import production, and its position cannot be controlled free from the fixed path. It is difficult to control the automobile position because of the eccentricity of inertia monent, slip and roughness between wheel and road surface. This problems is solved for the controller to be feedbacked the data of the multi-sensor system consisting of the rotary encoder and electronic compass. The proportional Integrated controller in the modified Ziegler-Nichols method is made up with Hitachi 7034 microprocessor. To the real time control the mechanical, electrical and electronic hardware and software device is produced by myself. The RF data of automobile speed and position is supplied to the remote PC to be displayed the automobile condition. By the experinent of the forward, spin, point path planning, it is known for autombile.

• 한국도서관정보학회지
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• 제41권1호
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• pp.29-49
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• 2010

디지털 세계에서의 지식정보의 접근성은 개인, 직업, 국가의 발전을 위한 핵심인자로 부상하고 있다. 그러나 세계 출판물 가운데 인쇄물을 이용할 수 없는 사람을 위한 대체자료는 5%에 불과하다. 장애인은 자신들이 필요로 하거나 읽고 싶은 자료에 접근할 수 없는 문제를 최대의 장애로 인식하고 있다. 이에 이 연구는 주요 국가(미국, 캐나다, 영국, 스웨덴, 일본, 한국)의 장애인을 위한 대체자료 개발정책(주체와 역할, 재정과 지원, 생산과 배포시스템 등)을 정밀 분석하였다. 그리고 이 예비연구의 결과는 국내에서 대체자료를 생산 배포하기 위한 국가적 계획과 역할모형의 개발을 위한 배경정보로 활용될 것이다.

• 한국시스템다이내믹스연구
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• 제6권1호
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• pp.17-32
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• 2005

An agricultural commodity production cycle model consisting of corn, beef, and dairy sectors was constructed for the purpose of exploring the propagating effects of large-scale disruptive events. In an initial proof-of-concept exercise, we considered an agricultural disruption scenario in which foot-and-mouth disease (FMD) is introduced into the U.S., causing a large-scale outbreak of the disease in both beef and dairy cattle. The magnitude of disruption to the beef and dairy sectors are presented under the existing W response policy and then improvements under two alternative policies are shown.

• Journal of Plant Biotechnology
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• 제37권3호
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• pp.262-268
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• 2010

Antibodies are powerful and versatile tools to play a critical role in the diagnosis and treatment of many diseases. Their application has been enhanced significantly with the advanced recombinant DNA and heterologonous expression technologies, allowing to produce immunotherapeutic proteins with improved biofunctional properties. However, with currently available technologies, mammalian cell-based therapeutic antibody production, as an alternative for production in humans and animals, is often not plentiful for passive immunotherapeutics in treatment of many diseases. Recently, plant expression systems for therapeutic antibodies have become well-established. Thus, plants have been considered to provide an attractive alternative production system for therapeutic antibodies, as plants have several advantages such as the lack of human pathogens, and low cost of upstream production and flexible scale-up of highly valuable recombinant glycoproteins. Recent advances in modification of posttranslational processing for human-like glycosylation in transgenic plants will make it possible that plant can become a suitable protein expression system over the animal cellbased current production system. This review will discuss recent advances in plant expression technology and issues for their application to therapeutic antibody production.