• 한국농공학회지
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• 제36권2호
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• pp.44-55
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• 1994

This paper describes the development of real-time irrigation reservoir operation models that adequately allocate available water resources for paddy rice irrigation. Water requirement deficiency index(WRDI) was proposed as a guide to evaluate the operational performance of release schemes by comparing accumulated differences between daily release requirements for irrigated areas and actual release amounts. Seven reservoir release rules were developed, which are constant release rate method (CRR), mean storage curve method(MSC), frequency analysis method of reservoir storage rate(FAS), storage requirement curve method(SRC), constant optimal storage rate method (COS), ten-day optimal storage rate method(TOS), and release optimization method(ROM). Long-term forecasting reservoir operation model(LFROM) was formulated to find an optimal release scheme which minimizes WRDIs with long-term weather generation. Rainfall sequences, rainfall amount, and evaporation amount throughout the growing season were to be forecasted and the results used as an input for the model. And short-term forecasting reservoir operation model(SFROM) was developed to find an optimal release scheme which minimizes WRDIs with short-term weather forecasts. The model uses rainfall sequences forecasted by the weather service, and uses rainfall and evaporation amounts generated according to rainfall sequences.

• 복식
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• 제58권9호
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• pp.166-175
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• 2008

For the structural firefighting protective clothing, it can show a synergy effect when it satisfies smart fabric to block off a harmful environmental element and ergonomics design that apply range of motion of human body and appropriate size system. There are various standards about the structural firefighting protective clothing, but it's difficult to find a rule about movement suitability because the performance of the material holds a lot of the rules. Therefore, the purpose of this study is to propose a scheme to evaluate the current structural firefighting protective clothing and to improve movement suitability by research on the actual condition. For this, the survey about wearer acceptability scale on design and size and about improvement requirements was executed gathering firefighters' opinion. Questionnaire was composed with 23 items about satisfaction on current structural firefighting protective clothing, body suitability, movement suitability, improvement requirement and subjective information. As a results, Korean firefighters demand ergonomics design of structural firefighting protective clothing which to minimize restriction of body movement and to maximize body suitability.

• 산업공학
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• 제12권2호
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• pp.319-328
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• 1999

Today, offshore design field is concerned with system integration such as CIM(Computer Integrated Manufacturing), PDMS(Product Data Management System) and EDMS(Engineering Data Management System) in order to cope with the change of engineering specification as owner's requirements during construction stage of the project. This paper deals with the case study that describes about the efficient interface between material control system and 3D CAD system to support the design process in offshore industry using design rules involved the designer's knowledge. In this paper, we constructed an information system, called knowledge-based CAD interface systems, which is composed material code management system and 3D specification generator which automatically creates 3D catalogue anti specification by linking the material code, called short code, and the specification components of the 3D CAD system. As a result of the construction, it is possible to maintain consistency of the design process, and through reduction of the design processing time and improvement of the design process, competitiveness is improved.

• Structural Engineering and Mechanics
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• 제84권1호
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• pp.63-76
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• 2022

Major engineering requirements and technological developments in the steel construction industry are discussed to support a new innovative system, namely corrugated web beams, for future structural projections. These new-generation steel beams, fabricated as welded plate girders with corrugated webs, are designed to combine large spans with very low weight. In the present study, the flexural capacity of optimally designed trapezoidal and sinusoidal corrugated web beams was aimed at. For this purpose, the new metaheuristic methods, specifically hunting search and firefly algorithms, were used for the minimum weight design of both beams according to the rules of Eurocode EN 1193 15 and DASt-Ri 015. In addition, the strengthening effects of the corrugation geometry at the web posts on the load capacity of fabricated steel beams were tested in a reaction frame. The experimental tests displayed that the lateral capacity of trapezoidal web beams is more durable under flexural loads compared to sinusoidal web beams. These thin-walled beams were also simulated using a 3-D finite element model with plane strain to validate test results and describe the effectiveness of the ABAQUS software.

• 한국전자파학회논문지
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• 제24권8호
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• pp.781-790
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• 2013

현대의 국가 핵심 기반 시설은 국제적으로 위협이 증대되고 있는 고출력 전자기파에 대해 매우 취약한 것으로 알려져 있다. 우리나라의 관계 법령에서는 주로 사이버 위협에 대해서만 다루고 있어, 고출력 전자기파 위협에 대해서는 세부시행 관련 규정이 미흡하여 현실적인 대책이 이루어지지 않고 있다. 본 논문에서는 고출력 전자기파 관련 제도의 국내, 외 동향을 살펴보고, 우리나라의 현행 관련 법령의 개정 방향과 구체적으로 법령에 담아야 할 내용에 대해 제안하였다. 그 중에서도 현행 "정보통신기반보호법"을 개정하여, 기밀정보의 보호, 산업육성, 연구 개발 지원, 교육 홍보 강화 등을 포함시키는 방안이 가장 효과적인 것으로 판단된다. 아무튼 본 논문이 우리나라의 효과적인 고출력 전자기파 방호 제도 도입에 도움이 되기를 기대한다.

• 무역상무연구
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• 제26권
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• pp.3-34
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• 2005

This thesis is in focus on keeping int'l businessman in mind application of CISG to perform smoothly in the their oversea's trade in accordance with taking effect on ratification of it from first, March, 2005. First of all, they have to keep in mind that it is possible to fall within the sphere of application of CISG of their contracts made between parties whose places of business are in different countries or although they have their places of business in different contracting states, if rules of private int'l law imply or express to the application of law of contracting state. Therefore in order to avoid confusion about whether apply or not, it is necessary to customize application of CISG as a proper law of their contracts. If so, they can avoid problem of requirements as to forms and any other requirement as to forms. Secondly they must attend the use of the legislative history of CISG and the use of the int'l case law and various scholarly thesises that studied on CISG such as information of Institute of Int'l Commercial Law under School of Law, PACE University. If so, problems which can give a rise in connection with interpretation of a basic and important terminology of CISG will be successfully conquest. In addition to above mentioned attentiveness, they must keeping in mind that various problems in connection with application of provisions of CISG can give their oversea's business a obstacle. buy the way of precaution against this case, they have to collect and analyze various materials about CISG.

• 한국도서관정보학회지
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• 제19권
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• pp.35-57
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• 1992

This study is an attempt to provide some helpful data for the design and the implementation of the expert system for the book-classification based on the analysis of various cases of the classification-expert system models. Following the introduction, the concepts and some features of an expert system were overviewed in the second chapter, on the basis of which the following concrete cases were introduced and analyzed in the third chapter : (1) ACN System for NC, (2) Expert System for NDC, (3) Expert System for UDC, (4) Herba Medica System, (5) Expert System for IPC, (6) Stratcyclode Project, (7) Expert System for Classification of INIS Database, (8) AutoBC System, and etc. In the conclusion, for the development of the classification-expert system, it was turned out that constructing a new system by using an AI language such as Prolog or LISP is more desirable than employing any one of expert system shells. Together it is necessary for the following requirements to be met : (1) The subject concept of a document elicited should be accurate. (2) Not only a domain knowledge but also the knowledge covering all the subjects should be represented in the knowledge-bases. (3) The knowledge-bases should be organized in such a way that the characteristics of the knowledge about classification should be well defined. (4) rule-base consisting of accurate rules about classification should be made. (5) It should be possible for classification code wanted to be generated immediately.

• 대한조선학회 특별논문집
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• 대한조선학회 2017년도 특별논문집
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• pp.1-7
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• 2017

It has been developed large mooring fittings having the capacity of 160 tons and 180 tons installed on 170K LNG FSRU. The finite element analysis for the mooring fittings was carried out in order to check the structural integrity and to confirm satisfaction of the rule requirements. The 3 kinds of mooring fittings such as chock, bollard and universal fairlead are selected for FE analysis and load test. According to the FE analysis results, all the stress levels satisfied the acceptance criteria guided by the IACS UR A2, ISO standard, ship rules and OCIMF. As test results under design load, no structural defects were found.

• 복식
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• 제31권
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• pp.47-60
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• 1997

As we analyzed the formalities of court dress during King Soonjo's rule through the characters depicted in $\boxDr$Wangseja Chulgungdo$\boxUl$(The Painting for a Crown Prince's Outgoing for Schooling to Sungkyunkwan) the results were as follows: People wore their appropriate full dress ac-cording to the ceremonial procedures. In the case of a Crown Prince normally the wore Gongjungchaek(a hat) (after the coming-of-age ceremony Iksunkwan) and Gonryongpo(imperial clothes) to show his status as a Crown Prince. He wore chugkumbok(a Coat) to indicate a Crown Prince as being a student. on an occasion of celebration a Crown Prince wore Wonyugwan and Gangsapo to provide him with prestige and as a sign of respect for the occasion. The teacher of a Crown Prince also wore Gongbok and Sangbok accoding to the dress requirements of the ceremonies. We can confirm that the Gongbok system of all government officials had been main-tained in the late Chosun dynasty. We know that the form of ceremonies be-came simplified in the late Chosun dynasty. it was recorded that students had to wear Chungkumbok. but we knew from the painting that students actually wore Dopo(a traditonal korean coat). We knew through this painting that the court dress rules of the late Chosun dynasty varied that previously known. As we concluded above research on the his-tory of costume by analyzing paintings both supplements our knowledge of the topic and confirms the deficiency in the study of the his-tory of costume based solely upon literature and books.

• Journal of Welding and Joining
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• 제31권6호
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• pp.1-7
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• 2013

In nuclear power plants, lined carbon steel pipes or PCCPs (pre-stressed concrete cylinder pipes) have been widely used for sea water transport systems. However, de-bonding of linings and oxidation of PCCP could make problems in aged NPPs (nuclear power plants). Recently at several NPPs in the United States, the PCCPs or lined carbon steel pipes of the sea water or raw water system have been replaced with HDPE (high density polyethylene) pipes, which have outstanding resistance to oxidation and seismic loading. ASME B&PV Code committee developed Code Case N-755, which describes rules for the construction of buried Safety Class 3 polyethylene pressure piping systems. Although US NRC permitted HDPE materials for Class 3 buried piping, their permission was limited to only 10-year operation because of several concerns including the quality of fusion zone of HDPE. In this study, various requirements for fusion qualification test of HDPE and some regulatory issues raised during HDPE application review in foreign NPPs are introduced.