• Proceedings of the Korean Operations and Management Science Society Conference
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• 2003.05a
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• pp.972-975
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• 2003

The purpose of this study is to integrate Decision Theory Approach(DTA) and OR Theory Approach(OTA) systemically. and to develop Combination Theory Approach to build an optimal R&D project portfolio by strategies. To Integrate two approaches. Utility theory is introduced. Evaluation Results aye converted into utility values by the utility functions and the values are optimized by 0-1 programming. Scoring method and Integer programming is used to evaluation a correspondence with a goal and to allocation the limiting resources. And utility function is used to reflect the preference of decision makers on the project evaluation.

• Korean Journal of Family Social Work
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• no.54
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• pp.107-153
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• 2016

The purpose of this study was to explore the marriage decision-making process and experience of the 'Older women-Younger men couple' and presenting a substantive theory to explain the decision-making process that married women experience of 'Older women-Younger men couple'. This in-depth interviews were conducted 11 female people among 32-48 years of 'Older women-Younger men couple.' Analysis of the data was applied to the "grounded theory" method of Qualitative research methods suggested by Strauss and Corbin(1998). Research questions of this study is that what is the experience of the marriage decision-making process to 'Older women-Younger men couple?'. After analyzing the data to the grounded theory method 75 concepts and 29 sub-categories, 14 categories were derived. Older women experienced a central phenomenon of 'ambivalence of love and anxiety'.'Older women-Younger men couple's marriage decision-making process of the women had to 'step adjustment', 'acceptable level', 'Step enacted', and 'Older women-Younger men couple's core category of married women in the decision-making process' was 'Intimacy based on the trust each other beyond the prejudices of the differences'. This study is meant by presenting the basic data provided professional counseling intervention measures for 'Older women-Younger men' couple by collectively Understanding the decision-making process of Older women-Younger men couple married.

• Proceedings of the Korea Society of Design Studies Conference
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• 2001.05a
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• pp.148-149
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• 2001

• Journal of the Korea Safety Management & Science
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• v.6 no.3
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• pp.249-273
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• 2004

Finding an optimal solution in MADN[(Multi-Attribute Decision-Making) problems is difficult, when the number of alternatives, or that of attributes is relatively large Most of the existing mathematical approaches arrive at a final solution on the basis of many unrealistic assumptions, without reflecting the decision-maker's preference structure exactly. In this paper we suggest a model that helps us find a group consensus without assessing these parameters in specific cardinal values. Therefore, This research provides a comprehensive Decision Making of the theory and methods applicable to the analysis of decisions that involve risk and multiple criteria attributes. after, The emphasis of the procedure will be on developments from the fields of decisions analysis and utility theory of Taguchi Method. This theoretical development will be illustrated through the discussion of several real-world application and a case study. When the multiple number of decision makers are involved in the decision making procedure, the problem of uncertainties invariably occurs, because of the different views between them. In this paper, New decision making model using Taguchi Method is applied to effectively model the multi-attribute-decision making(MADM) procedure in the uncertainties dominated two area(quantitative and qualitative factors), Quantitative factors evaluation is used Loss Function of Taguchi, qualitative factors evaluation is used 50 ratio by each specialist. thus it can be used for aiding of preferable alternative. as a result, We will be proved efficiency about New decision making model of applied Taguchi Method with Analytical presentation of all the expecting outcomes when a specific strategy or an alternative plan is selected under expecting future environment.

• Management Science and Financial Engineering
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• v.10 no.1
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• pp.1-23
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• 2004

The changing structure of organization and the increasing diversity of business have forced organizations to have abilities to coordinate dispersed business activities. They have required cooperation and coordination among the functional units in the organization which should involve group decision-making processes. Although many group decision-making support tools and methods have been introduced to enable the collaborative process of group decision-making, they often lack the features supporting the dynamic complexity issue frequently occurring at group decision-making processes. This results in cognitive unfit between the group decision-making tasks and their supporting tools, bringing about mixed results in their effects on group decision-making. This study proposes system dynamics modeling as a group decision-making support tool to deal with the group decision -making tasks having properties of dynamic complexity in terms of cognitive fit theory.

• The Korean Journal of Financial Management
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• v.24 no.4
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• pp.135-161
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• 2007

In this paper, we study empirically the dividend initiation decisions of IPO firms listed on Korea Securities Market and KOSDAQ Market. Specifically, we study three aspects of dividend initiation decision, (a) dividend initiation decision, (b) dividend level decision, (c) time-to-initiation decision. The main results of this study can be summarized as follows. First, determinants suggested by the major theories of dividends, namely, residual dividend, dividend signaling, agency, catering, and transactions cost theory explain significantly the dividend initiation decision. Second, determinants suggested by the major theories of dividends explain significantly the dividend level decision. So to speak, most of the findings for dividend initiation decision also hold for the dividend level decision. Third, most of the factors that increase(decrease) the probability of dividend initiation reduce(increase) the time-to-initiation. Almost of the dividend initiation firms start paying dividends within two years of the IPO. Thus, if IPO firm does not initiate dividend early in the life of the firm, then it is highly likely that it will never initiate dividend.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2003.05a
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• pp.958-965
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• 2003

The rapidly changing business environment has required cooperation and coorduiation among functional units n organizations which should Involve group decision-making processes Although many group derision-making support tools and methods have provided the collaborative capabilities for organizational members, they often lack features supporting the dynamic complexity issue frequently occurring at group decision-making processes This study proposes system dynamics modeling as a group decision-making support tool to deal with the group derision-making tasks having properties of dynamic complexity in terms of cognitive fit theory.

• International Journal of Reliability and Applications
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• v.2 no.2
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• pp.137-146
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• 2001

In general, analysis of the decision problems in nuclear system management involves a simultaneous consideration of various criteria and decision alternatives. Sometimes, it is a complex, unstructured, ill-defined process incorporating the multi-criteria and the data of impreciseness. To cope with this analysis, a fuzzy hierarchical analysis methodology is proposed and demonstrated with a simple example.

• Proceedings of the ESK Conference
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• 1996.10a
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• pp.181-184
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• 1996

Fuzzy hierarchical analysis(FHA) has the usefulness to allow decision maker's ambiguities when comparing two alternatives. But, for easiuly appling it to a decision problem, the handling its many data and for decision makers much not knowing fuzzy theory are the obstacles to must be overcomed even if the results of final fuzzy weights can be computed by a personal computer. This paper decribes that FHA is revised, and input/output interfaces are developed to collect input data easily and interprete the fuzzy resultlts. Finally, a fuzzy decision process is suggested with them.

• Journal of Families and Better Life
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• v.11 no.1
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• pp.203-217
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• 1993

The purpose of this study was to investigate relations of decision-making power of the elderly to home management and life satisfaction by applying a social behavior theory and exchange theory and to find out the device which improve the elderly life satisfaction at the home management view. For these research tasks the data was collected through the questionaire and interview those respondents were 273 woman elderly living with one of their married children in Seoul. It was analyzed by various statistical methods such as Frequency Percentile ANOVA F-test t-test Pearson's Corrdlation Analysis Multiple Regression Analysis. The results of this study are as follows: 1) Decision-making power of the elderly to home management had significant differences according to all of th variables except for religion job status of the elderly and education income of the children. 2) Decision-making power of the elderly to home management had the significant differences according to the variable such as income of the elderly solidarity between the elderly and their adult children age of the elderly The most influencial factor was income of the elderly. 3) Elderly life satisfaction had significant differenced according to all of the variables except for age job status of the elderly and education income of the children inmate children 4) In the result of analyzing the elderly life satisfaction the most influencial factor was decision-making power to home management and the explanary power to home management and the explanary power of those variables for the elderly life satisfaction was 56.2%.