• 한국사회정책
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• 제19권2호
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• pp.9-38
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• 2012

본 연구는 비영리조직과 영리조직의 영역 간 직업이동과 조직원의 직무만족도 변화의 관계를 분석함으로써 영역 간 이동 현상에 대한 이해 제고를 목적으로 한다. 이를 위해 한국고용정보원의 대졸자 직업이동경로 패널조사자료(GOMS)를 토대로 직무만족의 연도 간 변화치를 측정하는 1차 차분모형을 활용한다. 비영리조직에 지속적으로 남아있는 이들을 준거집단으로 하여, 영리조직으로부터 비영리조직으로 이직한 집단, 비영리조직으로부터 영리조직으로 이직한 집단, 영리조직에 남아있는 집단 등의 직무만족 변화를 비교한다. 분석결과, 한국 사회에서도 영역 간 직업이동은 활발한데, 특히 비영리조직으로부터 직업 활동을 시작한 이들에게서 이러한 현상이 보다 두드러지는 것으로 나타났다. 직무만족의 수준을 보면, 비영리조직에 남아있는 집단의 만족 수준이 지속적으로 가장 높은 것으로 나타났다. 그러나 다른 세 집단의 경우에 비해서, 비영리조직에 남아있는 집단의 만족도의 부정적 변화가 상대적으로 가장 큰 것으로 나타났다. 이와 함께 본 연구는 직무만족의 다양한 구성내용을 중심으로 네 집단 간의 비교를 수행한다. 이러한 분석결과를 바탕으로 지금까지 우리 사회에서 전혀 연구되지 않았던 주제인 영역 간 직업이동과 직무만족의 변화라는 현상이 제공하는 함의를 논의한다.

• 응용통계연구
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• 제23권1호
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• pp.29-39
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• 2010

본 연구의 목적은 배당보험의 이점을 보험자와 계약자 측면에서 분석하고, 배당보험의 활성화를 위한 정책 제안을 하는데 있다. 이를 위해서 계약자 배당이 활성화된 영국 생명보험회사의 데이터를 이용해 상관분석 및 회귀분석을 통해 실증분석을 하고, 분석 결과를 바탕으로 시사점을 도출하였다. 분석 결과 배당보험은 보험료 수입을 증대시키는 것으로 나타났고, 사업비가 무배당보험에 비해 상대적 많이 들지 않으며, 재무건전성이 높은 회사가 배당보험을 많이 판매하는 것으로 나타났다. 이러한 연구 결과를 볼 때, 보험회사는 배당보험을 시장점유율 향상을 위한 마케팅도구로 활용할 수 있을 것이며 또한 향후 상품포트폴리오 구성에 배당상품을 적극적으로 고려해볼 필요가 있다. 계약자에 대한 시사점으로는 우선 유배당보험이 무배당보험에 비해 사업비와 관련하여 차별적인 요소가 없음을 알수 있다. 또한 재무적으로 튼튼한 회사가 유배당보험을 많이 판매하고 있기 때문에 계약자의 유배당보험 구입의 편익은 긍정적이다고 평가할 수 있을 것이다.

• 수산경영론집
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• 제33권2호
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• pp.31-48
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• 2002

This paper is aimed to analyze how to evaluate the choice of optimal management measures and level of control in fisheries management under the costly and imperfect management system by comparing with costless and perfect management system that is commonly assumed in the analysis of fisheries regulations. Fishermen would set the level of fishing efforts at the point where the marginal fishing profit for fishing effort is equal to the marginal level of fine under costly and imperfect management system. Therefore, under the case where the marginal fishing profit is higher than the marginal level of fine, the level of fishing efforts would be made at the point which is higher than the level of fishing efforts made under costless and perfect management system and is not a point where the economic profit is maximized in regulated fisheries. From this conclusion, the fishermens avoidance activities against regulations as well as the level of control in fisheries management substantially have an influence on the choice of fisheries management instruments. According to the analysis of optimal fisheries management policy, the economic profits in regulated fisheries are determined by the level of fisheries enforcement costs and total fishing profits, in which as enforcement costs increase the economic profits decrease. In addition, the economic profits vary in response to the level of control in avoidance activities. That is, as avoidance costs decrease, the economic profits increase. The determination of optimal level of control in fisheries management should be made at the point where the marginal regulation costs are equal to the marginal profits from regulated fisheries, in which marginal regulation costs are different according to the type of management measures. And the level of profits changes in response to different levels of avoidance activities. The management measure that can maximize the difference between the marginal regulation costs and marginal profits from regulated fisheries should be chosen as an optimal fisheries management instrument.

• The Journal of Asian Finance, Economics and Business
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• 제8권7호
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• pp.365-373
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• 2021

This paper investigates the presence of momentum profits in the Saudi stock market. The study applied a quantitative method by utilizing monthly closing prices of 194 listed firms on Tadawal (Saudi Stock Market). The data from January 2010 to February 2019 is taken from the Tadawal market database for analysis. The sample is further divided into two equal sub-samples based on the structural changes that occurred in the Saudi stock market. Moreover, the high- and low-value traded portfolios are also constructed to examine the presence of momentum profits. Sixteen investment strategies are formed for each sample. The results show a very strong presence of momentum profits in the Saudi stock market for the full sample as well as for the sub-samples. The momentum profits are observed for a longer investment horizon. The results confirm that the short or medium-term formation of portfolios produces negative momentum returns for high-value traded stocks. The low-value traded stocks portfolios give similar results to the full sample results in terms of momentum profits. The results suggest that an investor should keep an eye on the past performance of desired stocks for at least three-nine months in which they are willing to invest.

• 한국건설관리학회논문집
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• 제11권2호
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• pp.54-63
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• 2010

국내 외 경기 침체의 영향으로 국내 건설업체들은 자금조달의 어려움을 겪고 있다. 이러한 경기 침체기에 자금의 유동화와 건설경기의 활성화를 촉진할 수 있는 리츠 제도가 2001년에 도입되어 점차 확대되고 있지만, 비슷한 시기에 도입한 다른 나라에 비해 성장속도 및 시장규모가 작은 편이다. 본 연구에서는 리츠의 활성화를 위하여 보다 높은 수익률 확보를 위한 포트폴리오 구성 방법으로, 마코위츠 포트폴리오 선정 모형을 적용한 리츠 투자 포트폴리오 구성 방법에 대해 제안하고자 한다. 주요 내용은 다음과 같다. 첫째, 2007년 7월 3일부터 2008년 7월 21일까지의 투자분석기간 동안 마코위츠 모형을 적용한 리츠의 투자결과와 비교대상 리츠들의 평균 수익률을 비교하여 수익률 향상정도를 분석하였다. 그 결과 마코위츠 모형을 적용한 수익률이 비교대상 리츠들의 평균 수익률보다 약 10% 높게 나타났다. 둘째, 기존 수익률의 자료 수집기간과 포트폴리오 교체주기에 대한 민감도 분석을 하여, 최적의 수익률을 나타낼 수 있는 자료 수집기간과 포트폴리오 교체주기를 도출하였다. 수익률 자료 수집기간이 6개월 일 때 비교대상 리츠들의 평균 수익률보다 마코위츠 모형을 적용한 수익률이 약 16% 높게 나타났으며, 포트폴리오 교체주기를 2주 간격으로 설정하였을 때는 약 11% 높게 나타났다.

• 한국융합학회논문지
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• 제4권4호
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• pp.1-5
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• 2013

본 연구는 회수물류의 실행의 중요성이 강조되고 있는 가운데, 기업이 보유한 회수물류역량이 공급사슬상의 협력기업들 간의 관계에서 기업의 수익을 향상시키며, 나아가 협력기업들 간의 협력만족도에도 긍정적인 영향을 미칠 수 있음을 보이고자 한다. 회수물류역량에 관한 선행연구들에서는 주로 최종조립자와 소비자간의 관계에서만 회수물류의 중요성을 다루고 있을 뿐 공급사슬 상의 협력 기업들 간의 관계에서 회수물류역량의 역할에 대한 연구는 거의 이루어지지 않은 실정이다. 회수물류의 실행은 자산가치를 복구하는 효과와, 재활용을 통한 비용감소 효과 및 이를 통한 이윤의 극대화의 성과와 관계가 있다. 이러한 회수물류역량은 협력기업들 간의 수익에도 영향을 미칠 뿐 아니라 협력 기업들 간의 협력 만족도에도 긍정적인 영향을 미칠 것으로 기대된다.

• 산업경영시스템학회지
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• 제42권3호
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• pp.15-24
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• 2019

Fair Allocation of profits or costs arising from joint participation by multiple individuals or entities with different purposes is essential for their continuing involvement and for their dissatisfaction reduction. In this research, fair allocation of the profits of forming a grand coalition in Three-Echelon Supply Chain (TESC) game that is composed of manufacturer, distributor and retailer, is studied. In particular, the solutions of the proportional method of profit, the proportional method of marginal profit, and Shapley value based on cooperative game theory are proved to be in the desirable characteristics of the core. The proportional method of profit and the proportional method of marginal profit are often used because of their ease of application. These methods distribute total profit in proportion to profits or marginal profits of each game participant. In addition, Shapley value can be defined as the average marginal profit when one game player is added at a time. Even though the calculation of the average of all possible marginal profits is not simple, Shapley value are often used as a useful method. Experiments have shown that the solution of the incremental method, which calculates the marginal cost of adding game players in the order of manufacturers, distributors and retailers, does not exist in the core.

• 한국병원경영학회지
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• 제2권1호
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• pp.1-21
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• 1997

In order to analyze the shifts in the volume and profits of Computed Tomography(CT) and Magnetic Resonance Imaging(MRI) utilization for a year before and after the implementation of insurance coverage for CT, this study has been undertaken examining CT and MRI cost data from 'Y' University Hospital situated in Seoul, Korea. Following are the results of this study: 1. The medical insurance payment for CT, implemented on January 1, 1996, increased CT utilization from January 1996 to April 1996 due to low insurance premiums: however, from May 1996 the number of CT cases significantly decreased as a result of strengthened medical cost reviews and the new 'Detailed standards for approval of CT' announced near the end of April 1996 by the insurer. 2. Since the implementation of insurance coverage for CT, CT fee reduction rates for reimbursements by the insurer to the hospital were 50% and 40% for January and February, respectively, and 31% and 15% for March and April. A significant point in the lowering of the reduction rate was reached in May at 11%; furthermore, since June the reduction rate fell below the average reduction rate for reimbursements for all procedures. If the 'Detailed standards for approval of CT' had been announced before the implementation of insurance coverage for CT, CT utilization would not have been so high due to the need to meet those 'standards'. In addition, loss of hospital profits resulting from the reduction for reimbursements would not have occurred. 3. The shifts in MRI utilization showed that there was no particular change with the beginning of insurance coverage for CT, and the introduction of the 'Detailed standards for approval of CT' made MRI utilization increase because MRI is free of restrictions imposed by the insurer. 4. The relationship between CT utilization and MRI utilization showed that they were supplementary to each other before insurance coverage for CT, but that CT was substituted for MRI because of strengthened medical cost reviews after t~e beginning of insurance coverage for CT. 5. The shifts in volume by patient characteristics showed that the number of inappropriate case patients, according to the insurer's "Standards for approval", decreased more than the number of appropriate case patients after the introduction of insurance coverage for CT. Therefore, the health insurance fee schemes for CT have influenced patient care. 6. The shifts in profits from CT utilization showed a net profit decrease of 31.6%. In order to match the pre-coverage profit level, 5,471 more cases would need to be seen and productivity would need to be increased by 32.7%. This profit decrease resulted from a decrease of CT utilization and low reimbursements. With insurance coverage, net profits from CT were 24.4%, and a margin of safety ratio was 39.6%. Because of the net profits and margin of safety ratio, CT utilization fees for insured appropriate cases could not be considered inappropriate. 7. The shifts in profits from MRI utilization before and after the introduction of CT coverage showed that in order to match pre-CT coverage profit levels, 2,011 more cases would need to be seen and productivity would need to be increased by 9.2%. The reasons for needing to increase the number of cases and productivity result from cost burdens created by adding new MRI units. But with CT coverage already begun, MRI utilization increased. Combined with a minor increase in the MRI fee schedule, MRI utilization showed a net profit increase of 18.5%. Net profits of 62.8% and a 'margin of safety ratio' of 43.1% for MRI utilization showed that the hospital relied on this non-covered procedure for profits. 8. The shifts in profits from CT and MRI utilization showed the net profits from CT decreased by 2.33billion Won while the net profits from MRI increased by 815.7million Won. Overall, these two together showed a net profit decrease of 1.51billion Won. The shifts in utilization showed a functional substitutionary relationship, but the shifts in profits did not show a substitutionary relationship. From these results, We can conclude that if insurance is to be expanded to include previously uncovered procedures using expensive medical equipment, detailed standards should be prepared in advance. The decrease in profits from the shifts in coverage and changes in fees is a difficult burden that should be shared, not carried by the hospital alone. Also, a new or improved fee schedule system should include revised standards between items listed and the appropriateness of the fee schedule should constantly be ensured. This study focused on one university hospital in Seoul and is therefore limited in general applicability. But it is valuable for considering current issues and problems, such as the influence of CT coverage on hospital management. Future studies will hopefully expand the scope of the issues considered here.

• Industrial Engineering and Management Systems
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• 제8권4호
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• pp.213-220
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• 2009

A revenue sharing contract is one of the mechanisms that coordinate decision makers in a decentralized supply chain toward the consensual goal. The transfer prices between different echelons in the supply chain influence the total supply chain profits. The study aims to explore various transfer pricing heuristics on the supply chain coordination in terms of the supply chain profits and their interactions with the revenue sharing rate. A model is proposed for formulating the collaborative production and distribution planning in a decentralized supply chain with the revenue sharing mechanism. Experiment results indicate that the transfer price and the revenue sharing rate affect significantly the coordination. Among the studied pricing heuristics, the variable-cost pricing method led to the best SC profits. Raising the revenue sharing rate reduced the SC profits no matter what heuristics were employed. Furthermore, the experiments provide us clues for finding the optimal transfer price for the supply chain.

• 한국경영과학회지
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• 제14권2호
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• pp.43-52
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• 1989

The present paper analyzes performance of a variant of rate-of-return regulation called the ex-post adjustment regulation put in effect in the Korean petroleum refinery sector. Unlike the traditional rate-of-return regulation on a monopoly, the regulation is first for the oligopolistic industry as a whole and second of the ex post nature. Under the regulation, at the end of each year, each firm is responsible to pay a certain portion of the excess of the total realized profits in the industry over the allowed profits. It is shown that if the excess profits are completely collected(including the interests), the social optimum can be realized. When only a portion of the excess profits can be collected, the regulation generally increases consumer surplus by making the firms more competitive. Each individual firm's production under the regulation depends on whether the firm's output is regarded as a strategic substitute or complement of other firms'output.