• KDI Journal of Economic Policy
• /
• 제40권3호
• /
• pp.1-44
• /
• 2018

This paper studies the macroeconomic effects of an enhancement in unemployment benefits in Korea. In particular, I quantify the welfare effect of two specific policy chances which have been mainly discussed among policymakers in recent years: increasing wage replacement rates by 10%p and extending maximum benefit durations by one month. To this end, I build and calibrate an overlapping generation model which reflects the heterogeneity of the unemployed and the specificity of the unemployment insurance (UI) system in Korea. The quantitative analysis conducted here shows that extending maximum benefit durations by one month improves social welfare, whereas increasing wage replacement rates by 10%p deteriorates social welfare. Extending maximum benefit durations is applied to potentially all the UI recipients, including unemployed workers whose wage before job loss is relatively low and whose marginal utility is relatively high. However, increasing wage replacement rates is applied to only a small number of UI recipients whose wage before job loss is relatively high, while the increase in the UI premium is passed onto all of the employed. This study suggests that given the current UI system and economic environment in Korea, it is more desirable to extend maximum benefit durations rather than to increase wage replacement rates in terms of social welfare.

• Journal of applied mathematics & informatics
• /
• 제26권1_2호
• /
• pp.337-347
• /
• 2008

Based on social welfare maximum theory, the optimal scale of power plants entering generation power market being is researched. A static non-cooperative game model for short-term optimization of power plants with different cost is presented. And the equilibrium solutions and the total social welfare are obtained. According to principle of maximum social welfare selection, the optimization model is solved, optimal number of power plants entering the market is determined. The optimization results can not only increase the customer surplus and improve power production efficiency, but also sustain normal profits of power plants and scale economy of power production, and the waste of resource can also be avoided. At last, case results show that the proposed model is efficient.

• 지역사회간호학회지
• /
• 제7권2호
• /
• pp.203-215
• /
• 1996

Social security is concerned with ensuring all citizens maintain basic needs, community health nursing maintains and promotes health for all community members. Lately, This new area of community health nursing, concern social welfare has increased. The objectives of this study are, first, to analysis the activities of nurses at community social welfare institutes, second, to estimate nursing demand for social welfare areas. The study methods used were as literature review, an analysis of statistical data and case study etc. The analytical framework also included a demand analysis of nursing manpower in community social welfare areas. The major results are as follows; 1. Employees which work at social welfare institutes number 55,464, nursing manpower (including nurse aids) number 1,458 and this is 3% of the total employees. Within nursing manpower, nurses number 780, nurse aids number 670. 2. The rates of nurses among total employees were high in institutes for mental disorders and institutes for the age. 3. The salary level of nurses was lower than average and the rates of retirement showed a roughly middle level in welfare institutes. 4. The satisfaction level of nursing services was high, and it is the trend that nurses substitute for nurse aids which retire at social welfare institutes. 5. Nurse demand that follows legal criteria is 2,221, but only 35% are working. It is therefore insufficient from the minimum of 733 to a maximum 1433. 6. The sufficiency rates by institution were high at institutes for vagrants, aged and the handicapped. In conclusion, the conditions are of nurses which are working in with the social welfare institutes are poor. Also the number of nurses compared rates of demand were in surplus. But, the basic direction of welfare policy is universal-preventive and provision of the family and of community centered service, and nursing service demand in the social welfare institute will increase continuously, we predict. Therefore, we will need a positive plan such as the development of an inservice education program and the construction of an information collection system etc.

• 한국사회복지학
• /
• 제61권1호
• /
• pp.33-55
• /
• 2009

본 연구는 1980년 이후 사회복지조직의 효과성 연구를 다룬 논문 20편의 연구경향을 파악함으로써 사회복지조직의 조직현상에 대한 이해 도모, 조직관리에의 실천적 함의 제공 및 향후 사회복지조직의 조직효과성 연구에 대한 제언을 하고자 하였다. 분석결과, 대부분의 연구가 사회복지관과 생활시설을 대상으로 이루어졌으며, 조직효과성의 이론적 기반으로 내부과정접근모델이 가장 많이 적용되고 있어, 향후 사회복지조직의 성장과 외부의 요구에 부응하기 위해서는 다양한 조직과 지표 및 연구방법론의 활용이 필요한 것으로 파악되었다. 조직관리 측면에서 조직효과성에 긍정적인 영향을 주는 집단적 개발적 조직문화, 분권적 조직구조, 변혁적 리더십, 외부와의 개방적 관계 활용을 제안하였다.

• Physical Therapy Rehabilitation Science
• /
• 제6권1호
• /
• pp.39-44
• /
• 2017

Objective: The purpose of this study is to show the effectiveness of performing squat exercises at various angles to show the maximum muscle activity of the Vastus Medialis Oblique (VMO) and Biceps femoris (BF). Design: Cross-sectional study. Methods: A total of seventeen healthy young adults (8 males and 9 females) voluntarily participated in the study. All subjects randomly performed three different squat variations as follows: A squat performed with the ankle joint at $0^{\circ}$ of incline, a squat performed with the ankle joint at $5^{\circ}$ of incline, and a squat performed with the ankle joint at $10^{\circ}$ incline. Muscle activity was measured using surface electromyography. Electrodes were placed on the VMO and BF to measure the muscle activity on the various ankle angles for comparison analysis. Results: There was a significant increase in bilateral VMO muscle activation at $10^{\circ}$ of incline compared to $0^{\circ}$ and $5^{\circ}$ (p<0.05). Greater increases in muscle activation and exercise effect was observed with increasing incline angles of the board. Changes in bilateral BF muscle activity were found; however, none were found to be significant. Conclusions: Bilateral VMO activity was found to be significant when the squats were performed at an ankle angle of $10^{\circ}$ of incline when compared to at an ankle angle of $0^{\circ}$ and $5^{\circ}$ of incline. Squats performed on an incline can be recommended as an effective method to facilitate lower extremity muscle activities.

• KIEE International Transactions on Power Engineering
• /
• 제3A권1호
• /
• pp.42-46
• /
• 2003

The economic operation of a utility in a deregulated environment brings about optimization problems different from those in vertically integrated one［1］. While each utility operates its own generation capacity to maximize profit, the market operator (or system operator) manages and allocates all the system resources and facilities to achieve the maximum social welfare. This paper presents a sequential application of non-cooperative and cooperative game theories in analyzing the entire power transaction process.

• 국제학술발표논문집
• /
• The 1th International Conference on Construction Engineering and Project Management
• /
• pp.699-704
• /
• 2005

Normally, monetary penalties for breach of agreement will be stipulated in the contract. The contractor parties, who fail to fulfill the agreement, are required to pay the other parties a certain amount or proportion of money as a fine. However, it is worth our study - whether or not the scope of monetary penalty implementation and bases for determination of a fine will cover the losses of social and administrative costs incurred by the interruption of the contract. This research is about the best timing for government to cancel the freeway repair work contracts. Under the goal of the maximum social welfare, the limitation of government spending for the social and administrative costs invoked by interruption of contracts will have to be considered to attain the best timing of contracts' suspension or deferment. According to the factors of social and administrative costs, the best time point is calculated to reduce the loss of the aforesaid costs, which can also be used as theoretical basis for the future road-widening construction at home.

• 한국산학기술학회논문지
• /
• 제15권11호
• /
• pp.6646-6651
• /
• 2014

이 논문은 정부가 1999년부터 시행하고 있는 농업관측사업에 초점을 두고 특히, 관측사업으로 인한 과일류 부문의 최대 사회후생효과를 파악하는데 목적을 두고 있다. 농업관측이란 농산물 시장의 공급 및 수요 관련 정보를 수집 분석하여 미래를 예측하고 그 결과를 공개하는 과정을 의미한다. 즉, 생산자, 유통 가공업자, 소비자, 수출입업자 등 관련기관의 모든 시장 참여자들을 대상으로 정보를 수집하여, 시장에 제공함으로써 정보의 부족과 왜곡을 줄이고, 가격메커니즘이 원활하게 작동되도록 하여 사회 전체적으로 자원 배분의 효율성을 높이는데 관측의 역할이 있다. 이 연구는 선행연구의 추정결과와 비교를 위해 Lee et al.[6]와 Kim et al.[5]의 방법을 이용하여 과일류 사회후생효과를 계측하였다. 농업관측사업으로 인한 과일류 부문 최대 사회후생효과(2012년 기준)는 사과 152억 2,800만원, 배 31억 5,400만원, 복숭아 19억 3,600만원, 포도 52억 1,100만원, 감귤 449억 7,600만원, 단감 25억 9,000만원으로 계측되었다. 이와 같은 과일류 사회후생효과가 각 과일품목의 생산액에서 차지하는 비중은 사과 1.5%, 배 1.8%, 복숭아 0.9%, 포도 1.0%, 감귤 5.4%, 단감 0.8% 등으로 추정된다.

• 대한간호학회지
• /
• 제40권1호
• /
• pp.88-98
• /
• 2010

Purpose: The purpose of this study was to identify the social network types of elders and to identify differences among latent classes by social network. Methods: The data of 312 elders used in this study were collected from health, welfare, and other facilities and from elders living in the community. The interviews were conducted from July 16 to September 30, 2007 using a standard, structured questionnaire. Descriptive statistics, one way ANOVA with the SPSS 15.0 program and latent class analysis using Maximum Likelihood Latent Structure Analysis (MLLSA) program were used to analyze the data. Results: Using latent class analysis, social network types among older adults were identified as diverse for 58.0% of the sample, as family for 34.0%, and as isolated for 8.0%. The health status of respondents differed significantly by network type. Elders in diverse networks had significantly higher health status and elders in isolated networks had significantly lower physical health status on average than those in all other networks. Conclusion: The results of this study suggest that these network types have important practical implications for health status of elders. Social service programs should focus on different groups based on social network type and promote social support and social integration.

• 한국경영과학회:학술대회논문집
• /
• 한국경영과학회 1995년도 추계학술대회발표논문집; 서울대학교, 서울; 30 Sep. 1995
• /
• pp.156-169
• /
• 1995

The purpose of this paper is to investigate the role of government in innovation. That is, how much should government invest in R&D activity for social welfare enhancement. An optimal control problem is proposed to answer the above question. Because of difficulties in solving the problem, simulation utilized to find an approximate solution. All results obtained from the simulation are very similar. The investment in R&D activity increases and reaches its maximum and then decreases continuously. If the importance of technology grows the investment in R&D activity should be expanded.