• Journal of Labour Economics
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• v.43 no.1
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• pp.35-57
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• 2020

Using the Korea Labor and Income Panel Study(KLIPS), this study analyzes the effects of profit sharing on employer-provided training. The estimation results of the fixed effect model that controls for endogeneity show that the workers of profit-sharing firms have a 6.7%-6.8%p higher probability of receiving employer-provided training than the workers of firms without profit sharing. They also show that the workers of profit-sharing firms have a 3.3%p higher likelihood of having employer-provided OJT than their counterparts. The impacts of profit-sharing on employer-provided training appear consistently regardless of the estimation models and in the subsamples. These findings support the hypothesis that profit-sharing promotes employer-provided training.

• Korean Journal of Social Welfare Studies
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• v.45 no.3
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• pp.5-34
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• 2014

This study investigates time allocation among paid work, child care and leisure of dual earner parents of pre-school child. The focuses of this study are time allocation of full-time dual earner parents which can be affected by traditional gender role ideology, and if the gender effects can be diminished or not. So the analysis were about gender effects in the time allocation and the moderating effects of education on gender effects. According to the analysis, the hypothesis are partly corroborated. Even though gender is not effective on paid working time(production time), it affects the time allocation for child care and leisure. There are significant gender gaps in time share for child care(family time) and time share for leisure(private time). The education has moderating effects on gender effects. When education years getting longer, gender gap in child care time becomes narrow, however gender gap in leisure time becomes wide. Because the education is expected to cultivate the sense of value of child care, it can bring decrease of gender gap in care time. According to the result on leisure time share, the education is not expected to make changes in patriarchical gender role in terms of leisure and it doesn't contribute work and life balance.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2004.10a
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• pp.367-370
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• 2004

본 연구에서는 lot-for-lot 정책으로 운영되는 불균등한 bargaining power를 갖는 단일 생산자와 단일 수요가로 구성된 공급망 시스템에서 생산자와 수요가의 생산량(또는 주문량)의 결정을 위한 통합 모델과 이에 따르는 통합효과의 적정 배분방법을 제안하고자 한다. Quantity incentive라는 개념을 고안하여 공급망 시스템에서 우위를 점하고 있는 생산자(또는 수요가)에게 수요가(또는 생산자)가 현재의 운영정책의 변경을 요구하고 이에 상응하는 보상금을 지불하는 형태의 조정방법을 제안하고자 한다. 이러한 과정을 통해 안정적인 공급망 시스템 운영을 위한 통합 효과의 적정 배분 방법을 추가적으로 제시하고자 한다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2004.10a
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• pp.574-577
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• 2004

본 연구에서는 lot-for-lot 정책으로 운영되는 불균등한 bargaining power를 갖는 단일 생산자와 단일 수요가로 구성된 공급망 시스템에서 생산자와 수요가의 생산량(또는 주문량)의 결정을 위한 통합 모델과 이에 따르는 통합효과의 적정 배분방법을 제안하고자 한다. Quantity incentive라는 개념을 고안하여 공급망 시스템에서 우위를 점하고 있는 생산자(또는 수요가)에게 수요가(또는 생산자)가 현재의 운영정책의 변경을 요구하고 이에 상응하는 보상금을 지불하는 형태의 조정방법을 제안하고자 한다. 이러한 과정을 통해 안정적인 공급망 시스템 운영을 위한 통합 효과의 적정 배분 방법을 추가적으로 제시하고자 한다.

• Proceedings of the Korea Water Resources Association Conference
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• 2007.05a
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• pp.493-497
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• 2007

한정된 수자원에 대한 수요가 급증하고 수질 및 환경문제가 대두되면서 수자원 계획 및 관리에 대한 관심이 많아지고 있는 실정이다. 이러한 수자원 계획 및 관리는 물리적으로 복잡해진 수자원 시스템 뿐만 아니라 사회적, 제도적 시스템을 반영할 필요성이 생겼으며 수자원 계획 및 관리자들의 의사결정에 도움을 주기 위하여 효율적인 여러 대안들의 평가나 수자원 관리(운영)가 필수적이다. 효율적인 수자원 계획 및 관리에 있어서 물배분은 매우 중요하며 이를 통해 급증하는 용수 수요에 효과적으로 대처하고 합리적인 수자원 관리(운영)을 실현할 수 있을 것이다. 본 연구에서는 실시간 물관리 시스템을 핵심이라고 할 수 있는 물배분 방식에 대한 연구로서 최적 물 배분 연구를 수행하였으며 연구의 목적은 시간적, 공간적 물부족량을 파악할 수 있는 모형을 바탕으로 현존하는 물배분 방식 즉, 선점주의(Prior Appropriation), 연안주의(Riparian), 공공 물배분, 경제적 물배분 등을 물배분 방식을 검토하고 수자원 관리자가 현업에서 효율적인 의사결정을 지원할 수 있는 최적 물배분 방식을 제시하는 것이다.

• The Korean Journal of Applied Statistics
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• v.28 no.6
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• pp.1047-1061
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• 2015

Stratified random sampling is a powerful sampling strategy to reduce variance of the estimators by incorporating useful auxiliary information to stratify the population. Sample allocation is the one of the important decisions in selecting a stratified random sample. There are two common methods, the proportional allocation and Neyman allocation if we could assume data collection cost for different observation units equal. Theoretically, Neyman allocation considering the size and standard deviation of each stratum, is known to be more effective than proportional allocation which incorporates only stratum size information. However, if the information on the standard deviation is inaccurate, the performance of Neyman allocation is in doubt. It has been pointed out that Neyman allocation is not suitable for multi-purpose sample survey that requires the estimation of several characteristics. In addition to sampling error, non-response error is another factor to evaluate sampling strategy that affects the statistical precision of the estimator. We propose new sample allocation methods using the available information about stratum response rates at the designing stage to improve stratified random sampling. The proposed methods are efficient when response rates differ considerably among strata. In particular, the method using population sizes and response rates improves the Neyman allocation in multi-purpose sample survey.

• Journal of Korean Society of Transportation
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• v.11 no.3
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• pp.31-48
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• 1993

본 연구에서는 다른 기종점 통행표(Trip Matrices)들을 같은 교통망(Network)에 배정하였을 때 교통분배 결과의 차이점들을 분석하고 교통분배의 민감도를 비교하였다. 전통적인 4단계 교통수요 추정에 의해서 산출된 교통배분을 비교의 기본자료로 이용했다. 또한 본 연구에서는 교통배분의 결과를 평가하기 위해 주로 사용하는 측정효과들과 교통배분의 기법들(Traffic Assignment Techniques)의 민감도도 연구조사하였다. 본 연구를 통하여 총교통량(Total Trips)과 통행길이빈도(Trip Length Frequency)제약에 의해 임의로 선출된 기종점 통행표를 이용한 교통배분의 결과는 전통적인 4단계 교통수요 측정에 의해 산출된 교통배분 및 조사교통량(Counted Traffic Volumes)에 매우 유사한 결과가 나왔다. 결론적으로 죤별 통행발생량에서의 오차는 교통배분의 본성적인 집계특성(Aggregative Nature)에 의하여 그 심각성이 감소되는 경향이 있다. 이것은 즉 앞단계(Trip Generation and Distribution Phases)에서 전통적으로 요구되어지는 정밀도가 없어도 적절한 교통배분기법을 사용함으로써 좋은 결과를 산출할 수 있다는 것을 암시한다.

• KDI Journal of Economic Policy
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• v.35 no.2
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• pp.71-105
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• 2013

Now that fiscal soundness is increasingly important influenced by the euro area fiscal crisis, early budget execution has been under the spotlight as a tool for economy control, other than typical expansionary method, such as supplementary budget. Basically, early budget execution is a fiscal policy instrument that reponses to economic fluctuations through modifying the inter-temporal allocation of fiscal expenditure within budget, without affecting fiscal soundness. This study empirically examines how effective the intert-temporal reallocation of fiscal expenditure is in economy control. Using Korea's Consolidated Fiscal data, the size of inter-temporal reallocation of fiscal expenditure is defined as changes of fiscal expenditure for one year excluding seasonal factors and used to explain real economic growth rate, a dependent variable. The result shows that the macroeconomic effect of the inter-temporal reallocation turns out meaningful in general, though some policy time lag exists. Meanwhile, a simulation using macroeconomic model finds that overall effect on economic growth is not large because increase in fiscal expenditure allocation at a certain point of time is canceled by the opposite direction within the same fiscal year. However, the inter-temporal reallocation is found to reduce volatility of key macroeconomic variables so as to contribute to partially stabilizing macroeconomy. In particular, such effect of economic stabilization seems to be highly apparent at the time of financial crisis, but not very noticeable in normal economic cycle.

• Journal of Animal Science and Technology
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• v.45 no.2
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• pp.309-318
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• 2003

In order to improve the quality of low-grade seasoned ribs, kiwi powder, pear powder and phosphates were studied. To seasoned ribs, 0.1%, 0.3% or 0.5% of kiwi powder was added and their MFI(Myofibrillar Fragmentation Index) values were 341.4, 368.3 and 405.1, respectively. As the amount of kiwi increased, MFI value increased(p<0.001). Also, when 0.5%, 1.0% or 3.0% of pear powder was added to seasoned ribs, their MFI values were increased as the addition levels of pear powder increased. As the amount of kiwi and pear powder were increased, WHC(Water Holding Capacity) decreased(p<0.001). On the other hand, as the amount of phosphates added increased, WHC increased. In drip loss, as the amount of kiwi and pear powder increased, it increased. However, drip loss was decreased as the amount of phosphates increased. For meat color, ‘L’ values of pear treatment groups were similar to those of control and ‘a’ values were higher in the treatment groups of 0.1${\sim}$0.3% kiwi powder, 0.5${\sim}$1.0% pear powder and 0.3${\sim}$0.5% phosphate than those of control. In sensory evaluation, treatment group of 0.3% kiwi powder and 0.5% phosphate showed the highest values in juiciness, tenderness and acceptability among the treatments(p<0.01).

• International Area Studies Review
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• v.13 no.3
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• pp.145-161
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• 2009

Applying the shift-share analysis, this paper decomposes FDI inflow into Korea for the period of 2003-2006. The paper finds that Korea has been lagging behind the world average in absorbing inward FDI, thereby recording negative aggregate industry-mix effects and negative aggregate competitive effects as well. However, the following industries have recorded positive competitive effect: electrical and electronic equipment, motor vehicles and other transport equipment, hotels and restaurants, transport, storage and communications, finance, and business services. In a nutshell, Korea is revealed to have competitive advantage in absorbing inward FDI in a few manufacturing industries and most of service industries. Government policies should accordingly be focused on these industries to encourage more inward FDIs.