• 산업경영시스템학회지
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• 제39권1호
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• pp.130-139
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• 2016

The purpose of this paper is to analyze the problems and the sources of defective products and draw improvement plans in a small plastic boat manufacturing process using TOC (Theory Of Constraints) and statistical analysis. TOC is a methodology to present a scheme for optimization of production process by finding the CCR (Capacity Constraints Resource) in the organization or the all production process through the concentration improvement activity. In this paper, we found and reformed constraints and bottlenecks in plastic boat manufacturing process in the target company for less defect ratio and production cost by applying DBR (Drum, Buffer, Rope) scheduling. And we set the threshold values for the critical process variables using statistical analysis. The result can be summarized as follows. First, CCRs in inventory control, material mix, and oven setting were found and solutions were suggested by applying DBR method. Second, the logical thinking process was utilized to find core conflict factors and draw solutions. Third, to specify the solution plan, experiment data were statistically analyzed. Data were collected from the daily journal addressing the details of 96 products such as temperature, humidity, duration and temperature of heating process, rotation speed, duration time of cooling, and the temperature of removal process. Basic statistics and logistic regression analysis were conducted with the defection as the dependent variable. Finally, critical values for major processes were proposed based on the analysis. This paper has a practical importance in contribution to the quality level of the target company through theoretical approach, TOC, and statistical analysis. However, limited number of data might depreciate the significance of the analysis and therefore it will be interesting further research direction to specify the significant manufacturing conditions across different products and processes.

• 한국사회복지학
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• 제46권
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• pp.37-59
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• 2001

This paper investigates the long-term social changes and the emerging issues in social insurance that such changes will entail, It does not attempt to resolve the conflict between neo-liberal reforms and neo-corporalist reforms. Nor does it confine itself to proposing the options to secure the financial stability of social insurance schemes. The aim of this paper lies in anticipating various problems that result from social development, analyzing the impacts of these problems on social insurance schemes, and delineating the solutions to these problems. This paper is comprised of three parts. First, it describes the expected long-term changes in society and the ensuing problems. Second, it asks whether these problems can be solved with increased public expenditures. For this purpose, an analysis of the trend in the expenditures by welfare states is attempted. Third, it summarizes the issues in social insurance and presents the possible solutions to the problems. In the chapter that deals with social changes and social problems, various aspects are reviewed, including the globalization process, the development of It industries, the uncertainty in the classification of incomes, the widening gap in earnings due to the bio-economy, and the relation between social insurance schemes and the tax system. It is concluded that there are limits to the role that increased public expenditures can play to solve the social problems. This paper argues for a structural change in the social insurance system. In every social insurance scheme, the state should foe-us its effect on the provision of basic protection against social risks for the whole population. At the same time, the state should improve the financial stability of the scheme and avoid large-scale deficits.

• 한국산림과학회지
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• 제80권3호
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• pp.287-295
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• 1991

국립공원(國立公園)을 포함한 자연휴양지(自然休養地)에서 과도한 개발에 따른 자원파괴나 무절제한 이용행위로 인한 환경오염현상은 Social Dilemma에 기인하는 현상으로 볼 수 있다. 자연휴양지(自然休養地)의 Social Dilemma는 공공자원(公共資源)인 산림휴양자원(山林休養資源)을 개발하고 관리하는 과정에서 발생하는 "개인의 이윤추구행위와 공공이익간의 갈등(葛藤)"을 말한다. Social Dilemma는 2가지 특성으로 요약된다. 첫째, 공동체의 구성원 각자가 자신의 이익만을 추구할 경우, 서로 협동하는 경우와 비교해서 더 큰 손해의 댓가를 치러야 하고, 둘째, 공동의 이익을 위해 협동을 하는 경우에는 구성원 각자는 더 큰 보상을 받게 된다. 국립공원(國立公園)에서 Social Dilemma의 해소방안(解消方案)은 크게 구조적(構造的)인 접근방법(接近方法)과 개별적(個別的)인 접근방법(接近方法)으로 구분되고, 구조적(構造的)인 접근방법(接近方法)에는 관리대표자(管理代表者)의 선출(選出), 선택적(選擇的) 보상제도(補償制度) 및 자원(資源)의 소유(所有)나, 관리(管理)를 개별화(個別化)하는 방법이 있으며, 개별적(個別的)인 접근방법(接近方法)에는 직접대화(直接對話)와 홍보(弘報) 및 교육적(敎育的)인 접근법이 포함된다. 본 연구에서는 실험실 연구와 공원현장실험연구의 결과를 Social Dilemma 이론에 의해 종합함으로써 자연휴양지자원에서의 Social Dilemma 이론의 적용을 위한 근거를 제시하였다.

• 한국시뮬레이션학회논문지
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• 제27권1호
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• pp.75-90
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• 2018

일반적으로 고객의 만족도를 높이는 방안은 병원의 이익 및 병원 의료진들의 만족도를 높이는 방안과는 상충된다. 이에 본 논문은 병원과 고객을 함께 고려한 평가지표를 사용하여 여러 가지 예약 패턴들을 비교해보고 병원의 효율적인 운영을 위해 성형외과에 적절한 예약 패턴을 제안하고자 한다. 본 논문에서는 도심에 위치한 실제 성형외과의 고객 및 진료 데이터를 이용해 시뮬레이션 모델을 설계하고, 이 모델을 대상으로 5가지 예약 패턴을 비교하였다. 예약 패턴의 강건성을 체크하기 위하여 성수기와 극성수기, 피크 요일과 한적한 요일 등 다양한 상황 하에서 실험을 진행하였다. 실험 결과, 본 연구에서 새롭게 제안하는 Triangle-like Pattern이 예약 수와 관계없이 가장 좋은 결과를 보여주었다.

• 건축역사연구
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• 제20권4호
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• pp.115-134
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• 2011

International Competition for Parc de la Villette has evoked the old architectural question that is about the conflict between unchanging architecture and ever changing time. Tschumi and Koolhaas suggested well-known solutions for it, both of which had started from the criticism of general urban design approach that ignored changing factors in time. However, this study argues that the approaches of Tschumi and Koolhaas are even opposite to each other in spite of their common aims. Influenced by deconstructivists' theories, Tschumi tries to generate the 'text' on the surface of la Villette so that the different users of the park can read it differently. The text is built by 'superimposing' different systems such as points, lines, and surfaces. This study criticizes such formalistic approach since such 'forms' do not generate any dialogue with the real users but just stay as a backdrop for irrelevant events. Meanwhile, Koolhaas concentrates on the 'ground-ness' of la Villette. What he deals with is the real ground which embraces all the potentials on it already. His 'bands' express nothing but the metamorphosis of the ground, and the ground generates the 'differences' out of itself by repeating itself ceaselessly. This study tries to clarify all those happenings and meanings by intimate investigation of various drawing works for the la Villette project by Tschumi and Koolhaas.

• 대한가정학회지
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• 제29권2호
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• pp.135-154
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• 1991

The purposes of this study are: 1) To find out overall family life issues percieved by the middle-classhousewives in their forties. 2) To examine detailed aspects related to middle years crises, leisure activities, children issues, family economy issues, and housing issues. 3) To clarify solutions to, and provide basic data on family issues raised by the middle-class families. The middle-class housewives in their forties living in the Seoul area were the subject of the survey. The sample size analysed in this study was 422. Data were analysed by the frequency, mean, percentile, standard deviation, X2-test, analysis of variance, multiple classification analysis, analysis of multiple regression, and Scheffe-test as a post-hoc analysis. The conclusions are as follows: First, the middle-class housewives tend to give more importance on children issues, especially on academic achievement and career development. Second, family cohesion of middle-class families is comparatively high and intra-familial conflict is low, and middle years crisis of housewives is comparatively low, too. Third, the stability of middle-class families can be found in household economic management patterns. one fourth of the families own stocks and two fifths of the families own real estate except their own dwelling house. Be based on their property income add to their labor income, middle-class families are showed their economic stability, however, intra-class inequality is found, too. Fourth, the great part of middle-class families that possess their own house, tend to be unsatisfied with their housig scale, and a half of the families expect to enlarge their housing scale for more comfortable and convient living.

• Journal of Communications and Networks
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• 제7권3호
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• pp.353-366
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• 2005

In future telecommunications systems, behaviour will be defined by inexperienced users for many different purposes, often by specifying requirements in the form of policies. The call processing language (CPL) was developed by the IETF in order to make it possible to define telephony policies in an Internet telephony environment. However, user-defined policies can hide inconsistencies or feature interactions. In this paper, a method and a tool are proposed to flag inconsistencies in a set of policies and to assist the user in correcting them. These policies can be defined by the user in a user-friendly language or derived automatically from a CPL script. The approach builds on a pre-existing logic programming tool that is able to identify inconsistencies in feature definitions. Our new tool is capable of explaining in user-oriented terminology the inconsistencies flagged, to suggest possible solutions, and to implement the chosen solution. It is sensitive to the types of features and interactions that will be created by naive users. This tool is also capable of assembling a set of individual policies specified in a user-friendly manner into a single CPL script in an appropriate priority order for execution by telecommunication systems.

• 복식
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• 제63권1호
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• pp.16-26
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• 2013

This study seeks solutions for two conflict values from the fair trade, one being fulfilling environment and social responsibility and the other being suggesting stylish designs within a reasonable price range. The purposes of this study were to establish fair-trade fashion product development process by investigating practices in fashion product development process within fair-trade company, and to identify the characteristics of fair-trade fashion product development. Qualitative research method was employed. Participant observation and in-depth interviews were conducted with practitioners working in fairtradekorea, Ltd. and producers in Bangladesh, from which case studies were compiled. The results were as follows: The case study provided evidence that fair-trade fashion product development has the same steps as practiced in general fashion brands, but has different characteristics such as fair-trade products going through a much slower process which led to early planning, having producer-centered product development, concentrating on spring/summer products, having a high cost structure, and having unpredictable quality control. Study implications and future research avenues are also discussed.

• Ocean Systems Engineering
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• 제1권2호
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• pp.157-169
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• 2011

To provide more rational design solutions at conceptual design level, axiomatic design method has been applied to solve critical part of a new engineering problem called Mobile Harbor. In the implementation, the Mobile Harbor, a functional harbor system that consists of a vessel with container crane approaches to a container ship anchored in the open sea and establishes a secure mooring between the two vessels to carry out loading and unloading of containers. For this moving harbor system to be able to operate successfully, a reliable and safe strategy to moor and maintain constant distance between the two vessels in winds and waves is required. The design process of automatic ship-to-ship mooring system to satisfy the requirements of establishing and maintaining secure mooring has been managed using axiomatic design principles. Properly defining and disseminating Functional Requirements, clarifying interface requirements between its subsystems, and identifying potential conflict, i.e. functional coupling, at the earliest stage of design as much as possible are all part of what need to be managed in a system design project. In this paper, we discuss the automatic docking system design project under the umbrella of KAIST mobile harbor project to illustrate how the Axiomatic Design process can facilitate design projects for a large and complex engineering system. The solidified design is presented as a result.

• 가정과삶의질연구
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• 제6권1호
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• pp.71-93
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• 1988

The purpose of this study is to investigate the realities of the husband's violence, to develop a scale to identify women who are victims of wife abuse and to provide evidence of the scale's validity. The Instrument entitled the Wife Abuse Inventory (WAI) and conflict Tactics Scale(CTS), are administered to 511 women who lives in Taegu area. The main results are as follows; 1) The CTS analysis shows the 42.5% of the sampled house wives are suffered minor violence and 9/0% are suffered violence form husband. 2) The WAI is factor analyzed to examine factor components within the scale. An examination of the rotated solutions suggested that WAI is composed 10 factors. These factor is labeled men's conception of supremency and aggression propensity, communication, economic difficulties and frustration, social activities, jealousy, children rearing, intimacy, family relationships in laws , affection, difference of culture. 3) an analysis of variance show the group mean score of the violence group and the mean score of the non-violence group on the WAI to be significantly different(P<.001). A discriminant analysis produce a significant discriminant function (P<.001). Using WAI scores as the discriminating variable, 81,15% of the violence and non-violence subjects are classified into their appropriate groups. This finding indicates that the WAI is a reliable device for screening violence and nonviolence group.