• 한국결정성장학회지
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• 제30권6호
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• pp.264-270
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• 2020

사용자 중심의 서비스디자인 방법론을 통한 디자인개발을 진행하고 시제품 제작 시 소재 선정 기준에 대해 조사분석하여 선정된 소재인 CFRP(Carbon Fiber Reinforced Plastics) CNT(Carbon Nano Tube)를 동물용 X-ray 디텍터 패널부분에 적용하여 제품디자인 및 시제품 개발을 진행하고 CFRP CNT 패널을 적용하여 완성된 시제품을 Drop 테스트, 전면 외압 강도 시험, 방진/방수 성능 시험을 진행하여 야외환경에서 사용하는 휴대가능한 동물용 X-ray 디텍터로 활용이 가능한 제품임을 확인하였다.

• 정보보호학회논문지
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• 제14권3호
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• pp.85-100
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• 2004

모든 정보시스템은 보안기능이 강화된 정보보호시스템이라 할 수 있으며, 정보보호시스템의 품질을 높이기 위해서는 초기 요구사항 분석 단계에서 보안요구사항을 정형적이며 일관적으로 분석 및 명세하여야 한다. 본 논문에서는 UML의 Use Case 모델을 확장한 Misuse Case 모델을 이용하여 보안요구사항을 분석 및 명세하는 모델과 프로세스를 제시하였으며, 도출된 보안기능요구사항들을 제품화한 비용효과적인 보안제품 선정 알고리즘을 제시하였다. 제시한 모델 및 프로세스를 통해 개발된 정보보호시스템의 품질을 제고할 수 있을 것이다

• Journal of Mechanical Science and Technology
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• 제19권5호
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• pp.1072-1079
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• 2005

Conceptual design is the first step in the overall process of product design. Its intrinsic uncertainty, imprecision, and lack of information lead to the fact that current conceptual design activities in engineering have not been computerized and very few CAD systems are available to support conceptual design. In most of the current intelligent design systems, approach of principle synthesis, such as morphology matrix, bond graphic, or design catalogues, is usually adopted to deal with the concept generation, in which optional concepts are generally combined and enumerated through function analysis. However, as a large number of concepts are generated, it is difficult to evaluate and optimize these design candidates using regular algorithm. It is necessary to develop a new approach or a tool to solve the concept generation. Generally speaking, concept generation is a problem of concept synthesis. In substance, this process of developing design candidate is a combinatorial optimization process, viz., the process of concept generation can be regarded as a solution for a state-place composed of multi-concepts. In this paper, genetic algorithm is utilized as a feasible tool to solve the problem of combinatorial optimization in concept generation, in which the encoding method of morphology matrix based on function analysis is applied, and a sequence of optimal concepts are generated through the search and iterative process which is controlled by genetic operators, including selection, crossover, mutation, and reproduction in GA. Several crucial problems on GA are discussed in this paper, such as the calculation of fitness value and the criteria for heredity termination, which have a heavy effect on selection of better concepts. The feasibility and intellectualization of the proposed approach are demonstrated with an engineering case. In this work concept generation is implemented using GA, which can facilitate not only generating several better concepts, but also selecting the best concept. Thus optimal concepts can be conveniently developed and design efficiency can be greatly improved.

• 산업경영시스템학회지
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• 제40권2호
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• pp.51-59
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• 2017

Due to the rapid change of global business environment, the growth of China's steel industry and the inflow of cheap products, domestic steel industry is faced on downward trend. The change of business paradigms from a quantitative growth to a qualitative product is needed in this steel industry. In this environment, it is very important for domestic steel distribution companies to secure their competitiveness by selecting good supply companies through a efficient procurement strategy and effective method. This study tried to find out the success factors of steel distribution industry based on survey research from experts. Weighted values of each factors were found by using AHP (analytic hierarchy process) analysis. The weighted values were applied to DEA(data envelopment analysis) model and eventually the best steel supply company were selected. This paper used 29 domestic steel distribution firms for case example and 5 steps of decision process to select good vendors were suggested. This study used quality, price, delivery and finance as a selection criteria. Using this four criterions, nine variable were suggested. Which were product diversity, base price, discount, payment position, average delivery date, urgency order responsibility and financial condition. These variables were used as a output variable of DEA. Sales and facilities were used as an input variable. Pairwise comparison was conducted using these variables. The weighted value calculated by AHP pairwise comparison were used for DEA analysis. Through the analysis of DEA efficiency process, good DMU (decision making unit) were recommended as a steel supply company. The domestic case example was used to show the effectiveness of this study.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2005년도 춘계학술대회
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• pp.618-621
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• 2005

In this study, the phenomena of hydrate formation and inhibition were investigated according to varying the concentrations using methanol and ethylene glycol as chemical additives. The results reveal that the used additives display better inhibition effects compared to pure water by decreasing the formation temperature and the inhibition performance of methanol is superior to that of ethylene glycol. As a conclusion, the plugging phenomena of flowline in natural gas product ion. subsea and frozen field pipelines can be predicted by examining the hydrate formation and inhibition conditions. Specifically, the results of this study can be applied to the selection of the prevention criteria and method of hydrate formation.

• 산업공학
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• 제25권3호
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• pp.309-318
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• 2012

Forecasting probability or likelihood of technology development success has been a crucial factor for critical decisions in technology management such as R&D project selection and go or no-go decision of new product development (NPD) projects. This paper proposes an analytic network process (ANP) approach to forecasting of technology development success. Reviewing literature on factors affecting technology development success has constructed the ANP model composed of four criteria clusters : R&D characteristics, R&D competency, technological characteristics, and technological environment. An alternative cluster comprised of two elements, success and failure is also included in the model. The working of the proposed approach is provided with the help of a case study example of MRAM (magnetic random access memory) technology.

• 한국식생활문화학회지
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• 제11권1호
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• pp.107-121
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• 1996

This study was carried out to develop the computer-assisted Hazard Analysis and Critical Control Point (HACCP) program for a systematic approach to the identification, assessment and control of hazards for foodservice manager to assure the microbiological quality of food in hospital foodservice operations. Sanitation practices were surveyed and analyzed in the dietetic department of 4 hospitals. Among them, one 762-bed general hospital was selected as standard model to develop computer-assisted HACCP program. All data base files and processing programs were created by using Foxpro package for easy access of HACCP concept. HACCP program was developed based on the methods suggested by NACMCF, IAMFES and Bryan. This program consisted of two parts: the pre-stage for HACCP study and the implementation stage of the HACCP system. 1. Pre-stage for HACCP study includes the selection of menu item, the development of the HACCP recipe, the construction of a product flow diagram, and printing the HACCP recipe and a product flow diagram. A menu item for HACCP study can be selected from the menu item lists classified by cooking methods. HACCP recipe includes ingredients, their amount and cooking procedure. A flow diagram is constructed based on the HACCP recipe. The HACCP recipe and a product flow diagram are printed out. 2. Implementation of HACCP study includes the identification of microbiological hazards, the determination of critical control points, the establishment of control methods of each hazard, and the complementation of data base file. Potentially hazardous ingredients are determined and microbiological hazards are identified in each phase of the product flow. Critical control points (CCPs) are identified by applying CCP decision trees for ingredients and each process stage. After hazards and CCPs are identified, criteria, monitoring system, corrective action plan, record-keeping system and verification methods are established. When the HACCP study is complemented, HACCP study result forms are printed out. HACCP data base file can be either added, corrected or deleted.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2008년도 춘계 종합학술대회 논문집
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• pp.763-767
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• 2008

본 연구는 기획여행상품의 가치, 여행자 만족 및 기획여행상품의 원가구성요소에 대한 이론적 기초의 정리에서 출발하여 이와 관련한 선행연구들의 선택된 원가구성요소에 대하여 알아본다. 이론적 연구의 구체적인 고찰을 통해 기획여행상품의 가치와 여행자 만족과는 어떠한 유기적인 관계가 있는지를 파악하고, 여행자 만족을 평가하기 위해 적용된 기획여행상품 원가구성요소의 선택기준에 대한 시사점은 무엇인지를 분석한다. 이러한 연구고찰을 통해 여행사는 기획여행상품의 기획 및 판매시 중점적으로 지원해야 될 부분이 무엇인지, 소비자의 의도가 무엇인지를 파악할 수 있으며, 또한 기획여행상품 생산자의 입장에서 고객의 욕구에 부합하는 기획여행상품 개발에 이를 활용할 수 있을 것이다. 한편 본 연구는 다른 하나의 핵심적인 목적을 위해 시행된 바, 원가구성 요소의 선택기준을 근거로 여행자 및 여행사 입장에서의 기획여행상품의 평가지표 중요도 연구 등에 활용하고자 한다.

• 정보보호학회논문지
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• 제14권5호
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• pp.79-95
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• 2004

정보보호 제품 평가를 위한 국제 공통평가기준(CC: Common Criteria)은 국제상호인정협정(CCRA: Common Criteria Recognition Arrangement)에 가입된 국가들 간에 자국에서 평가된 제품에 대해 다른 국가에서 재평가 없이 상호인정이 가능한 평가 기준이다. 본 논문에서 우리는 국내 정보보호 제품을 분류하기 위하여 CC 체제하에 평가된 미국, 영국, 호주의 평가된 정보보호 제품을 분석하였고, CC 평가를 위한 정보보호 제품군을 정의하였다. 그리고 주요 정보보호 제품에 대한 국내외 시장 동향과 국내 산업체 의견 및 수요 조사를 위하여 설문지를 만들어서 설문을 수행하였고, 그 결과를 취합하여 분석하였다. 그 결과 우리는 향후 5년간 국내에서 우선적으로 평가가 필요한 차기 정보보호 평가대상 제품 15개를 선정하였고, 선정된 정보보호 제품에 대한 특성과 장단점을 분석하였다. 본 논문의 결과는 우리나라 실정에 적합한 정보보호 제품 개발 및 평가를 위해 활용 가능하고, 차기 평가대상 확대시 정책 자료로 활용될 것으로 기대된다.

• 복식문화연구
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• 제3권2호
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• pp.323-346
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• 1995

The increasing number of senior citizens, combined with the power of purchasing due to discretionary income have vaulted the elderly into the position of an attractive future target market. Therefore, it would be crucial for marketers to understand elderly's purchasing behavior. The purpose of this study was to identify clothing purchasing behavior of elderly women. For this study, questionnaires were administered to 600 women over 55 years of age. However, the sample that was analyzed fer statistical analysis was involved 418 elderly women. Statistical analysis were majorly descriptives such as frequencies and percentages. The major results of this study were summarized as follows. 1. In relation to problem recognition in purchasing process, motives of purchasing apparel were identified as a happy event in home such as a wedding and a birthday, a change of seasons and a casual discovery of a suitable clothing in shopping, in orders. 2. In relation to information search, important information on apparel and fashionability were thought as display racks in a store, opinion from friends and family and fashionability from others or streets, in orders. 3. In relation to selecting a store in purchasing process, older consumers assessed that attractive price, design suited to my age, variety in one store and apparel product quality were important store attributes, in orders. In terms of a purchase place, older consumers purchased clothing mainly on department stores, wholesale stores such as Namdaemoon or Dongdaemoon market, mainly retail stores located close to home and discount stores of well known brand, in orders. 4. In relation to alternative evaluation in purchasing process, older consumeres considered that style or appearance suited to me, color, design, comfort and fitness were important selection criteria, in orders. 5. In relation to purchase choice, 61.7% of the respondents paid money by themselves and 68.9% paid on cash in purchasing apparel. 6. In relation to outcomes of purchase, older consumers solved their complaint against a unsatisfactory product mainly by returning the unsatisfactory clothing. Also, there were those who took no action against the unsatisfactory product and who altered the clothing for fitness by themselves.