• 한국시뮬레이션학회논문지
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• 제5권1호
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• pp.13-27
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• 1996

The management of blood inventory is very important within the medical care system. The efficient management of blood supplies and demands for transfusion is of great economic and social importance to both hospitals and patients. Fro any blood type, there is a complex interaction among the optimal inventory level, daily demand level , daily supply level, transfusion to crossmatch ratio, crossmatch release period, issuing policy and the age of arriving units that determine the shortage and outdate rate. In this paper, we develop an efficient decision rule for blood inventory management in a hospital blood bank which can support efficient hospital blood inventory management using simulation, The primary use of the efficient decision rule will be to establish minimum cost function which consists of inventory levels , period in inventory, outdate and shortage rate for whole blood and various component inventories for a hospital blood bank or a transfusion service, If the adminstrator compute the mean daily demand for each blood type, the mean daily supply for each blood type, the length of the crossmatch release period and the average transfusion to crossmatch ratio , then it is possible to apply the efficient decision rule to compute the optimal inventory level, inventory period , outdate and shortage rate. This rule can also be used as a decision support system that allows the blood bank adminstrator to do sensitivity analysis related to controlled blood inventory parameters.

• 가족자원경영과 정책
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• 제5권1호
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• pp.97-110
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• 2001

This study was designed to examine the effect of joint participation in decision-making on the home management satisfaction of new-generation married women, which will issue basic data for improving the quality of new-generation home life. The sample was composed of 371 married women under 39years old, selected by age and the local distribution. Major findings are as follows. 1) New-generation married women’s joint participation in decision-making showed a significant difference by degree of communication, perception of the adequacy of resources, perception of the level of living. Home management satisfaction shoed a significant difference by state of employment, existence of children, sex role attitudes, degree of communication, perception of the adequacy of resources, perception of the level of living. 2) The more a couple participated in decision-making about eating and children, the higher level a new-generation married women showed in home management satisfaction. 3) The main variables predicating new-generation married women’s home management satisfaction was perception of the adequacy of resources, perception of the level of living, gender role attitudes, existence of children, joint participation in decision-making about eating and children. They accounted for 36% of the variance.

• 한국도로학회논문집
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• 제16권4호
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• pp.127-134
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• 2014

PURPOSES : To operate more efficient traffic management system, it is utmost important to detect the change in congestion level on a freeway segment rapidly and reliably. This study aims to develop classification method of congestion change type. METHODS: This research proposes two classification methods to capture the change of the congestion level on freeway segments using the dedicated short range communication (DSRC) data and the vehicle detection system (VDS) data. For developing the classification methods, the decision tree models were employed in which the independent variable is the change in congestion level and the covariates are the DSRC and VDS data collected from the freeway segments in Korea. RESULTS : The comparison results show that the decision tree model with DSRC data are better than the decision tree model with VDS data. Specifically, the decision tree model using DSRC data with better fits show approximately 95% accuracies. CONCLUSIONS : It is expected that the congestion change type classified using the decision tree models could play an important role in future freeway traffic management strategy.

• 대한산업공학회지
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• 제1권2호
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• pp.27-38
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• 1975

This paper explores a quantitative decision-making system for planning production, inventories and work-force in a multi-item production system. The Multi-item Parametric Decision Rule (MPDR) model, which assumes the existence of two types of linear feed-back rules, one for work-force level and one for production rates, is basically an extension of the existing method of Parametric Production Planning (PPP) proposed by C.H. Jones. The MPDR model, however, explicitly considers the effect of manufacturing progress and other factors such as employee turn-over, difference in work-days between month etc., and it also provides decision rules for production rates of individual items. First, the cost relations of the production system are estimated in terms of mathematical functions, and then decision rules for work-force level and production rates of individual items are establised based upon the estimated objective cost function. Finally, a direct search technique is used to find a set of parameters which minimizes the total cost of the objective function over a specified planning horizon, given estimates of future demands and initial values of inventories and work-force level. As a case problem, a hypothetical decision rule is developed for a particular firm (truck assembly factory).

• 공학교육연구
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• 제12권3호
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• pp.73-78
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• 2009

본 연구의 목적은 이공계 대학생들의 진로결정수준과 진로준비행동을 분석하는 것이다. 본 연구는 한국직업능력개발원의 2007년 한국교육고용패널(KEEP) 원자료 중 연구 질문에 따라 해당 연구대상을 2, 3년제 전문대학 및 4년제 대학 이공계 학생 298명으로 제한 추출하였다. 분석 결과 이공계 대학생의 진로결정수준은 성별, 출신 고등학교, 대학 유형, 전공계열 등과 무관하게 낮은 것으로 나타났다. 진로준비행동의 경우, 직업세계의 이해 측면은 남성 이공계 대학생이 여성 이공계 대학생보다 미래직업 업무내용에 대해 구체적으로 인지하는 것으로 나타났다. 진로탐색 계획과 활동 측면에서는 대학유형별로 2년제, 3년제 대학보다 4년제 대학의 이공계 대학생들이 미래직업 계획을 보다 적극적으로 수립하는 것으로 나타났다. 본 연구를 통해 이공계 대학생의 진로지도 프로그램 개발이 필요하고 저학년 초기 진로지도가 필요하다는 점을 제언하였다.

• 한국의류산업학회지
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• 제25권5호
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• pp.634-642
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• 2023

This study aimed to investigate the influence of career barriers on employment decisions among high school students specializing in beauty-related field. The subjects of this study were 339 students attending beauty-specialized high schools in Gwangju Metropolitan City and Jeollabuk-do, and a self-written questionnaire was employed for conducting the research. This survey was conducted from April 4 to April 18, 2022. A total of 380 questionnaires were distributed, and 350 responses were collected. Of these, 339 questionnaires were considered for the final analysis, as the remaining 11 had incomplete or insincere responses. The results of this study are summarized as follows. First, the career barriers affecting high school students in beauty-specialized schools were categorized into eight factors: lack of interest, economic difficulties, financial support, interpersonal challenges, job information, anxiety about future, conflict with others, and lack of self-clarity. Second, when assessing the impact of career barriers on employment decision-making, it was observed that the level of employment decision-making had a statistically positive (+) effect, and the lack of interest had a negative (-) effect on the level of employment decision-making. Next, the significance of the regression model, considering the specific factors of career barriers in relation to employment confidence, was established as p<.001. Variables such as a lack of interest, limited access to job information, and lack of self-clarity had a negative (-) effect on the level of employment confidence, with a significance level of 0.05.

• 디지털융복합연구
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• 제8권1호
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• pp.55-69
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• 2010

본 연구는 기업의 윤리정책이 윤리적 의사결정에 행위에 미치는 영향에서 개인특성요인의 조절효과를 분석하는데 초점을 맞추었다. 연구의 대상은 서울 및 수도권에 근무하는 정규직 근로자(n=211)을 대상으로 하였으며, 연구모형을 설정하고 이를 통계적 절차에 의하여 검정하였다. 통계분석에는 신뢰도와 타당도 분석, 상관분석, 분산분석 및 조절회귀분석(MRA)을 실시하였다. 본 연구의 분석결과로 첫째, 조직의 윤리강령이 있고 이를 실행하는 강도가 높을수록, 기업이 추구하는 가치가 높다고 구성원들이 인지하는 정도가 높을수록 윤리적 의사결정에 영향을 미치는 것으로 나타났다. 즉, 기업외적 윤리적 의사결정의 평가 요인보다 내부적 요인에 의해 직접적인 영향을 받고 있음을 것을 시사하며, 기업의 의사결정이 투명하게 이루어지고 이를 조직구성원들에게 인지토록 하는 것이 필요하다. 둘째, 본 연구에서 설정한 조직의 장기비전에 대하여 높은 인지와 내재적인 통제의 위치에 있는 구성원들이 기업의 윤리적 의사결정에 있어 독립변수의 역할을 수행할 뿐만 아니라 조절변수로서의 역할을 수행하고 있음을 알 수 있다. 또한 통제변수로 사용한 많은 변수간의 윤리적 의사결정수준의 차이가 있음을 알 수 있는데 이는 개인특성요인과 관련된 것으로 향후 높은 윤리적 의사결정의 실행을 위해서는 통제변수의 특성을 고려한 차별화된 교육의 실시가 요구된다.

• International journal of advanced smart convergence
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• 제12권4호
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• pp.370-377
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• 2023

Previous research has demonstrated that happy moods are known to promote feeling-based processing, whereas sad moods promote reason-based processing. The current research investigates a boundary condition for the effects of a happy mood on feeling-based decision making. This research proposes that the level of control (low vs. high) one exercises in a happy situation can promote a greater reliance on feelings (vs. reasons) in making judgments and decisions. Specifically, we hypothesize that (1) a happy individual in a situation where control level is low (vs. high) will be more likely to choose a cognitively (vs. affectively) superior option (hypothesis 1), and (2) a happy individual in a situation where control level is low (vs. high) will exert reason- (vs. feeling-) based processing (hypothesis 2). Consistent with the hypothesis 1, the results of two experiments show that happy individuals are more likely to choose cognitively versus affectively superior options in a situation where control level is low (vs. high). Moreover, the mediation analysis confirms that happy individuals are more likely to rely on cognitive, reason-based decision making when their control level is low, which supports the hypothesis 2.

• 가정과삶의질연구
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• 제32권5호
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• pp.41-61
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• 2014

The purpose of this study was to investigate whether differentiation of self mediates the relationship between parenting styles (i.e., care and overprotection) and the level of career decision-making among young adults. We separately measured the mother's and the father's parenting styles and five dimensions of differentiation of self that S. Je (1989) suggested. The data came from 387 young adults who were juniors and seniors at universities in Seoul and its surrounding cities. Using Baron and Kenny's (1986) steps based on regression, we found that the relationships between both caring and overprotective parenting styles and young adults' level of career decision-making were mediated by four dimensions of differentiation of self (i.e., intellectual functioning vs. emotional functioning, family projection process, emotional cutoff, and family regression) except for integration of self. The results were consistent for both the mother and the father. Bootstrapping tests showed that all of the mediation effects were statistically significant. This study contributes to the literature by showing that young adults' level of career decision-making is not simply determined by inputs such as parenting styles but is also mediated by differentiation of self. The results of this study are meaningful in that both the mother's and the father's parenting styles could make a difference in young adults' level of career decision-making through differentiation of self.

• IEIE Transactions on Smart Processing and Computing
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• 제5권4호
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• pp.235-242
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• 2016

The emerging High-Efficiency Video Coding (HEVC) standard attempts to improve coding efficiency by a factor of two over H.264/Advanced Video Coding (AVC) at the expense of an increase in computational complexity. Mode decision with motion estimation (ME) is still one of the most time-consuming computations in HEVC, as it is with H.264/AVC. Thus, fast mode decisions are not only an important issue to be researched, but also an urgent one. Several schemes for fast mode decisions have been presented in reference software and in other studies. However, the conventional hierarchical mode decision can be useless when block-level parallelism is exploited. This paper proposes operation-level exploration that offers more chances for early termination. An early termination condition is checked between integer and fractional MEs and between the parts of one partition type. The fast decision points of the proposed algorithm do not overlap those in previous works. Thus, the proposed algorithms are easily used with other fast algorithms, and consequently, independent speed-up is possible.