• KIEAE Journal
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• 제15권1호
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• pp.69-75
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• 2015

Building has required the repair money to improve or maintain the decent living condition continuously after construction. It needs to grasp the building deterioration to decide the scope and contents before it is repaired. Under various conditions such as physical, social and financial constraints, the repair plan would be prepared. Among constraints, the cost is indispensible to specify the repair time, repair scope and target. The required cost would be planned to preparation over the years. In this paper, it aimed at providing the repair strategy of the public rental housing in repair time, using the cumulative cost model which is $3^{rd}$ function. In the $3^{rd}$ function, the inflection point should exist in the line. And there are two types in the cumulative model, First, if the maximum cost be shown, the repair time would be provided. Second, if the maximum cost not be shown, the cumulative function should be proportionally increased and the repair strategy is properly provided with a short cycle. In results of this study, 11 items would provide the repair time. These cumulative function would be repaired about 4 years after constructed, and after about 4 years, the cumulative function would be continuously increased.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 1998년도 추계학술대회 논문집
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• pp.407-410
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• 1998

Configuration is a set of building block processes, a series of selection and combining parts or components which composes a whole thing. A whole thing could be such a configurable object as manufacturing product, network system, financial portfolio, system development plan, project team, etc. Configuration problem could happen during any phase of product life cycle: design, production, sales, installation, and maintenance. Configuration has long been one of cost and time consuming work, because only high salaried technical experts on product and components can do configuration. Rework for error adjustments of configurations at later process causes far much cost and time, so accurate configuration is required. Under the on-line electronic commerce environment, configuration problem solving becomes more important, because component-based sales should be done automatically on the merchant web site. Automated product search, order placement, order fulfillment and payment make that manual configuration is no longer feasible. Automated configuration means that all the constraints among components should be checked and confirmed by configuration engine automatically. In addition, technical constraints and customer preferences like price range and a specific function required should be considered. This paper gives an brief overview of configuration problems: characteristics, representation paradigms, and solving algorithms and introduce CRSP(Constraint and Rule Satisfaction Problem) method. CRSP method adopts both constraint and rule for configuration domain knowledge representation. A survey and analysis on web sites adopting configuration functions are provided. Future directions of configuration for EC is discussed in the three aspects: methodology itself, companies adopting configuration function, and electronic commerce industry.

• Management Science and Financial Engineering
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• 제19권2호
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• pp.19-29
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• 2013

Refuse collection network design, one of major decision problems in reverse logistics, is the problem of locating collection points and allocating refuses at demand points to the opened collection points. As an extension of the previous models, we consider capacity and maximum allowable distance constraints at each collection point. In particular, the maximum allowable distance constraint is additionally considered to avoid the impractical solutions in which collection points are located too closely. Also, the additional distance constraint represents the physical distance limit between collection and demand points. The objective is to minimize the sum of fixed costs to open collection points and variable costs to transport refuses from demand to collection points. After formulating the problem as an integer programming model, we suggest an optimal branch and bound algorithm that generates all feasible solutions by a simultaneous location and allocation method and curtails the dominated ones using the lower bounds developed using the relaxation technique. Also, due to the limited applications of the optimal algorithm, we suggest two heuristics. To test the performances of the algorithms, computational experiments were done on a number of test instances, and the results are reported.

• 한국심리학회지 : 문화 및 사회문제
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• 제12권1호
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• pp.161-195
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• 2006

이 연구의 주된 목적은 한국 사람들이 한국 사회와 개인 삶의 질에 대해 갖고 있는 인식을 분석함으로써 토착심리를 탐구하는데 있다. 삶의 질을 높이는 요소와 낮추는 요소에 대한 세대별 지각을 중심으로 분석하였으며, 개인 삶의 질로는 가정, 학교, 직장, 여가생활에서의 삶의 질이 포함되었다. 분석대상은 총 3,406명으로서 남녀 초, 중, 고, 대학생 1,331명과 그들의 부모 및 교사 2,075명이었다. 김의철과 박영신(2004b)이 제작한 자유반응형 질문지를 실시하여 분석한 결과는 다음과 같다. 첫째, 한국 사회의 삶의 질을 높이는 요소로 경제적 요인, 국민들의 노력, 문화/여가생활, 원만한 인간관계, 올바른 정책, 교육수준이, 한국 사회의 삶의 질을 낮추는 요소로 경제 불안, 정치 불안, 시민의식 결여, 집단 이기주의, 부정부패/비리, 여가생활 부족, 과도한 교육열이 지적되었다. 둘째, 개인의 가정생활에서 삶의 질은 화목한 가족관계와 경제적 여유가, 학교생활에서 삶의 질은 친구관계와 학업성취가, 직장생활에서 삶의 질은 원만한 인간관계와 경제적 요인 및 성취감이, 여가생활에서 삶의 질은 경제적이고 시간적인 여유 및 인간관계가 중요하였다. 셋째, 세대집단별 인식 차이가 있었다. 한국 사회 삶의 질을 낮추는 요소로 학생은 정치 불안을, 성인은 경제 불안을 가장 많이 지적하였다. 가정생활 삶의 질을 낮추는 요소로 학생은 가족 간의 갈등을, 성인은 경제문제를 가장 많이 지적하였다. 여가생활 삶의 질을 낮추는 요소로, 학생은 시간 부족을, 성인은 경제적 여건을 가장 많이 지적하였다. 넷째, 학생은 가정의 경제수준이 높을수록, 나이가 어릴수록, 학업성적이 좋을수록, 자기의 삶의 질을 긍정적으로 인식하였다. 성인의 경우는 나이와 관계없이, 가정의 경제수준이 높을수록, 사회생활에서 성취도가 높을수록, 자기의 삶의 질을 긍정적으로 인식하였다. 이러한 결과들을 종합하여, 삶의 질 인식을 통해 본 한국인의 토착심리를 원만한 인간관계, 경제적 요인, 자기조절, 교육적 성취의 네 측면에서 논의하였다.

• 유통과학연구
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• 제14권2호
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• pp.13-22
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• 2016

Purpose - We examine the marginal value of cash in Korean retail firms, largely unexamined in literature. The marginal value of cash plays pivotal role in cash management policy; especially, a significantly low marginal cash value indicates substantial manager-shareholder conflicts. Research design, data, and methodology - We estimate marginal cash values by adopting the approach of Faulkender & Wang (2006). The sample of retail firms traded in Korean Stock Exchange from 1991 to 2013 is analyzed. Results - We estimate the marginal value of cash for the retail firms as 0.75, implying significant manager-shareholder conflicts. We find a lower marginal value of cash for financially constrained retail firms, contradicting existing theories. The marginal value of cash increases substantially after 2000s, suggesting severe agency conflicts in 1990s as a key reason behind our findings. Conclusions - Our findings support the substantial resource diversion problem in Korean firms and the agency theory of cash management policy. Our results argue against the widely accepted view focusing on implications of financial constraints, which highlights a need of new cash management theory.

• International Journal of Human Ecology
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• 제5권1호
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• pp.117-130
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• 2004

Poverty is an important issue, not only in developing countries but also in industrialised societies. In 1999 15% of the European population have been in risk of poverty and the number of people living in poverty in Germany continues to increase. As poverty concerns all aspects of life, it influences health, well-being and the nutrition of the people living on low-income. Although this problem is obvious, only few surveys have been conducted to analyse it and therefore there is only limited information on the nutritional situation and nutrition behaviour of the poor. A qualitative study, which looked closely at the nutrition behaviour of 15 low-income families, was carried out in Giessen, Germany. The results showed that the nutritional situation of poor families differs from that families with a higher income have, the reasons being that their scope for action is restricted by a shortage of money and that there is a lack of skills and knowledge to provide family members with adequate nutrition. Strategies to improve the nutrition situation of poor families should aim at encouraging them to acquire relevant information and appropriate skills to adopt a healthier diet within their financial, social and cultural constraints. Also there have to be socio-political arrangements, which improve existing financial and social provisions as well as preventive educational measures.

• 한국경제지리학회지
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• 제16권4호
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• pp.631-646
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• 2013

본 연구는 1990년대 초반과 2000년대 후반 기간 동안을 대상으로 공적분 장기 분석과 시계열 단기 회귀분석을 통해 은행대출과 주택가격 간의 인과성 패턴을 경험적으로 분석한다. 은행대출과 주택가격 간의 동시적인 상관관계가 크지만, 실증 분석 결과는 신용 증가와 은행대출 간의 강력한 상호작용은 주택가격의 변동에 따른 은행대출의 변화에 기인한다는 것을 보여주고 있다. 또한, 2000년대 초 중반에 도입된 LTV와 DTI와 같은 거시 건전성 규제는 금융시장과 부동산시장의 안정화에 크게 기여한 것으로 나타나고 있다.

• The Journal of Asian Finance, Economics and Business
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• 제8권8호
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• pp.137-148
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• 2021

The study investigates the existence of an optimal level of cash and the firm characteristics influencing the decision to hold cash, and the adjusting speed of the cash holdings to the target level. It highlights the heterogeneity of cash adjustment speed in the Vietnam market. The research employs the 417 samples of Vietnamese non - financial listed firms in the period of 2010 to 2019. The study uses the Pool OLS model, Fixed effect model (FEM), Random effect model (REM), and GMM model. According to the research findings, there is an optimal amount of cash at which the firm's value is maximized in Vietnamese listed firms, and the majority of the firms in the sample retain cash over the target level. Furthermore, the study demonstrates that firms actively modify their cash holdings to the optimal level with an adjustment speed of less than one owing to adjustment cost constraints. This speed varies between groupings of enterprises with different characteristics, underlining the heterogeneity of the adjustment speed even more. Small deviation firms adjust more rapidly than large deviation firms. Large free cash flow (FCF) firms adjust more readily than small FCF firms, and fiscal deficit firms modify more rapidly than firms with a financial surplus.

• East Asian Economic Review
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• 제26권3호
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• pp.179-204
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• 2022

This study examines the extent to which policy-based loans to SME exporters affect their export performance (the intensive margin of exports). We also investigate the heterogeneous export effects of policy-based loans that may depend on firm- and industry-specific characteristics, such as credit ratings, debt-to-assets ratios, firm size and age. To do so, we conduct a survey, of 1,000 Korean SMEs, that collect information on firm-level exports and policy-based loans. The main empirical findings strongly support that SMEs that receive policy-based loans tend to increase their export volumes. However, these loans' positive impact on exports are only valid for SME exporters with credit scores of 12 or greater (that is, SMEs that have difficulty accessing the external financial market). The estimation results with respect to SMEs' dependence on external financing imply that policy-based loans for SMEs in sectors that are heavily dependent on external finance are effective in that they are instrumental in increasing these firms' exports. These empirical findings emphasize the importance of the external financial market to SME exporters who face various up-front investments that are related to their exporting activities.

• 경제분석
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• 제17권2호
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• pp.56-89
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• 2011

금융시장이 불완전하면 기업투자가 현금흐름에 대해 민감하게 반응한다. 한국의 기업 자료를 이용하여 투자의 전환회귀모형을 추정한 결과, 기업투자의 현금흐름 민감도가 통계적으로 유의하게 나타났다. 재벌소속기업과 대기업의 경우에 고민감도체제로 전환될 가능성이 크며, 회사채등급과 유동비율은 양호할수록 저민감도체제로 전환될 수 있다. 외환위기 이후에 기업투자의 현금흐름 민감도는 약화되었으나 회사채등급과 유동비율이 민감도에 미치는 영향은 더욱 유의해졌다. 또한 경제 전체의 투자-현금흐름 민감도는 통화 긴축기간에 커지는 것으로 나타났다. 이는 한국경제에서 통화정책의 신용경로가 작동하고 있다는 증거로 해석된다. 통화정책은 경제 전체에 영향을 미칠 뿐 아니라 기업특성에 따라 차별적인 효과를 나타낸다는 점을 통화당국은 고려해야 할 것이다.