• 한국경영과학회:학술대회논문집
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• 한국경영과학회 2008년도 추계학술대회 및 정기총회
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• pp.8-23
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• 2008

The purpose of this study is to develop a Cross Impact System Alternatives Tree(CISAT) model necessary for selecting the interdependent R&D planning system alternatives. This model modifies System Alternatives Tree(SAT) model developed by Kwon et al.. The SAT model is composed of several functions necessary for the achievement of a final goal and several subsystems for satisfying each function. In case that the relationship of technology alternatives is interdependent, this model overlooked a relative importance derived from occurrence or nonoccurrence of the technology alternatives in the future time varience. However, a complex evaluation process within the ballot system is another disadvantage of the SAT. To solve such problems, the Cross Impact Analysis(CIA) model is applied in the SAT model so as to consider the cross impact among interdependent system alternatives.

• 산업공학
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• 제15권4호
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• pp.460-473
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• 2002

The objective of this paper is to design a Goal Alternatives Disposition System having three main subsystems for setting, evaluating and selecting goal alternatives. For setting of goal alternatives, System Alternatives Tree(SAT) structure will be developed, which has a computation algorithm for setting decision alternatives by the concept of System Priority Number(SPN). For evaluating and selecting of goal alternatives; First, Normative and Exploratory Priority Indices which consider technical performance to the goal, cost and feasibility are developed respectively. Second, Integrated Priority Index is built up to determine the total priority of the Goal Alternatives Disposition(GAD) system. For the design and verification of the GAD system, technological forecasting structure theory, systems engineering methodology will be used.

• 산업경영시스템학회지
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• 제11권18호
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• pp.7-15
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• 1988

This study is concerned with selecting mutually dependent quality improvement alternatives with resource constraints. These qualify improvement alternatives art different fro the tradition at alternatives which are independent from each other. In other words, selection of any improvement alternative requires other related specific improvement. Also the overall product quality in a multi stage manufacturing process is characterized by a complex multiplication method rather than a simple addition method which dose not allow to solve a linear knapsack problem despite its popularity in the traditional study. This study suggests a non-linear integer programming model for selecting mutually dependent quality improvement alternatives in multi-stage manufacturing process. In order to apply the model to selecting alternatives. This study also suggests a heuristic mode1 based on a dynamic programming model which is more practical than the non-linear integer programming model. The logic of the heuristic model enables 1) to estimate improvement effectiveness values on all improvement alternatives specifically defined for this study. 2) to arrange the effectiveness values in a descending order, and 3) to select the best one among the alternatives based on their forward and backward linkage relationships. This process repeats to selects other best alternatives within the resource constraints. This process is presented in a Computer programming in Appendix A. Alsc a numerical example of model application is presented in Chapter 4.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2021년도 봄 학술논문 발표대회
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• pp.89-90
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• 2021

VE is one of the technologies that are essential to promote cost reduction and performance improvement in construction projects. In the VE process, there are very important steps in deciding whether to adopt VE ideas and alternatives or not. However, when examining the possibility of selecting and adopting alternatives, it is difficult to clarify the differences and characteristics of the existing and improved proposals due to lack of understanding of the owner and inadequate consideration of harmonization with the alternative surroundings. In order to overcome these problems, it is necessary to effectively exchange information related to alternatives among VE participants and to examine the applicability of VE alternatives more in-depth. Therefore, in this study, a process for reviewing the applicability of VE Alternatives using BIM based VR was proposed to review more appropriate VE alternatives.

• 산업경영시스템학회지
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• 제16권27호
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• pp.113-119
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• 1993

The purpose of this study is to develop a analytic procedure of the alternatives for the FMS that consist of high-priced facilities. A procedure to analysis the alternatives are as follows. Stage one is procedure to appraise investment alternatives of FMS and devide factors into strategic, analytic, economic viewpoint and draw upon decision making matrix through normalization Stage two is appraise to normalized alternatives using TOPSIS model among multiple attributes decision making models.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 2001년도 추계학술대회 논문집
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• pp.242-245
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• 2001

This study is aimed to design a priority setting algorithm necessary for evaluating and selecting interdependent R&D planning system alternatives. In case that the relationship of technology alternatives is interdependent, a relative importance as occurrence or nonoccurrence of the technology alternatives viewed from the future time varies. So, we are subject to design the evaluation process considering a cross- impact of future technology alternatives. Thus, we apply the cross impact analysis (CIA) model to consider the cross-impact among interdependent system alternatives. Also, the analytic hierarchy process(AHP) model is applied to determine the priority of alternatives by taking the pair-wise comparison among factors.

• 대한산업공학회지
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• 제36권1호
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• pp.22-31
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• 2010

In R&D project evaluation, we consider the technical couple. And we set technology modular alternatives, after evaluating technical group based on technical couple. So we solve the problem extracted from existing research of R&D project evaluation. We use Conjoint Analysis(CA) for this research. CA is usually used for confirming customers' preference. However we use it for researchers' preference in the side of technology. This research is followed by the next 4 steps. (1) Hierarchical model of goal technology (2) Composition model of modular alternatives (3) Evaluation model of modular alternatives (4) Setting model of technology modular alternatives.

• 대한수학회논문집
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• 제10권2호
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• pp.331-335
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• 1995

We prover Fredholm alternatives for AF algebras: If an element have the finite null projection and the confinite range projection then its image in the relative Calkin algebra is invertible.

• 환경생물
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• 제33권4호
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• pp.361-374
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• 2015

내분비계장애물질 (endocrine disruptors)은 포유류에서 축적되어 내분비계를 교란하며, 특히 수정능, 초기발생 등에 악영향을 미치고 암을 유발할 수 있는 것으로 잘 알려져 있다. 이러한 내분비계장애물질은 그 내분비계 교란 효과에 대한 지식이 부족하여 페인트, 코팅, 세제, 플라스틱 등에 활발히 사용되어 왔다. 특히 가정에서 내분비계장애물질은 음식 용기, 물병, 세탁용 세제 등에 사용되어 인체에 쉽게 노출되었다. 이후 내분비계장애물질의 위험성을 인식하면서 세계 각국에서는 내분비계장애물질의 생산 및 사용을 규제하고 대체재를 발굴하기 시작하였다. 그러나 현재까지 보고된 대체재의 안전성 또한 불확실하며, 이들의 인체에 대한 악영향을 완전히 파악하지 못한 채 사용하고 있다. 최근 이러한 대체재들 중 기존의 내분비계장애물질과 구조적으로 유사하고 내분비계 교란 효과를 갖는 물질이 있음이 밝혀졌으며, 이에 본 소고에서는 기존에 알려진 대표적인 내분비계장애물질인 bisphenol-A, phthalates, nonylphenols 및 이들의 대체재가 인체에 미치는 영향을 파악하고, 나아가 일부 대체재들에 대한 in-silico 분석을 수행함으로써 현존하는 대체재의 안전성에 의문을 제기하고 바람직한 소재 발굴을 위한 가이드를 제시하고자 하였다.

• 한국주거학회논문집
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• 제19권4호
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• pp.71-78
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• 2008

The study was intended to suggest the design alternatives and guidelines of village community center as a common living space for the elderly in rural area. First, two design alternatives were derived from the previous research which examined the conditions and old persons' needs of village community center. Then, the design guidelines were proposed on the basis of the previous research and the elderly's evaluation for those two alternatives. The subjects were 85 old residents who were more than 60 years old and lived in rural area in Gyungnam. The interview was carried out using a questionnaire, models, and isometrics of two alternatives. The subjects evaluated positively both of two alternatives. The design guidelines of village community center were derived as follows: Both of two alternatives can be used as a model of village community center. The dining and living space in the center should be opened and large. Both of indoor and outdoor toilet should be arranged in village community center. Also, each toilet for man and woman should be separated.