• Environmental and Resource Economics Review
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• v.21 no.1
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• pp.93-127
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• 2012

We estimate how much KEPCO can save their loss and how much social welfare can be increased by applying the real-time pricing instead of current regulated retail price in the electricity market in order to analyze the problem of the regulated retail price which is fixed below the marginal cost. We estimate the demand functions of peak time and off-peak time in summer (June to August) and winter (December to February). We construct the supply function based on hourly step-wise linear marginal cost functions, too. We find that the increase of social welfare will be 67 billion won in summer if the fixed retail price is changed into the real-time pricing scheme. The total 705 billion won will be transferred from consumer surplus to producer surplus and the rest (67 billion won) will be saved from the reduction of deadweight loss among KEPCO's loss. In winter, the increase of social surplus will be 225 billion won and 1,174 billion won of KEPCO's loss will be transferred from consumer surplus. As a result, we conclude that the regulation of the retail price in the electricity market induces the social welfare loss and KEPCO suffers a huge loss.

• Journal of Korean Physical Therapy Science
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• v.9 no.2
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• pp.143-149
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• 2002

Nowadays senile dementia is on the rise as consequence of serious social problem because of it is old aged society by improvement of medical service. However remedial approach is not being done because of we still don't have an infallible cure of dementia and dementia is been hard to cure. Thus it is introduced in this study to the concept of Occupational therapy, which is one of the remedies. I tried to find out which remedy is the best to cure demented elderly and which is been able to use on field. For this study, I applied a developed Occupational therapy program in actual practice. First, I chose nine demented elderly who are lived in 'David's house' located in Daejon metropolitan city, and I separated them in three groups for this study. Second, I applied each Occupational therapy to first and second group, and I did not apply any Occupational therapy to third group. The first and second group was applied the program, two times a week for an hour, for three months. The measurement of Cognitive function was practiced five times - one time before applying the Occupational therapy by MMSE-K, and three times during applying the program, and one time after ending of the program. The measurement of ADL was practiced two times - one time before applying the Occupational therapy by the Barthel ADL, and one time after one month from ending the program. Effectiveness of Occupational therapy and possibility of application of Occupational therapy program are proved because of this study shows the Occupational therapy keeps well the cognitive function and the ADL function of demented elderly, improves those functions, affects positively to the whole life. However we must develop Occupational therapy, which is proper to a trait of character, and expanded application is needed. In addition, temporary remedy must not be performed but continuous cure. This study will be complement by studying about special situation researcher cannot control something like unexpected death of demented elderly by other diseases.

• Animal Bioscience
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• v.36 no.7
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• pp.1143-1149
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• 2023

Objective: We investigated the effects of outdoor access for 1 h per day on the animal welfare (AW) of tethered cows, in terms of lying and sleeping postures, and immune function. Methods: A total of five dry cows were tethered all day indoors (tethering) for 30 days and then tethered indoors with 1 h daily outdoor access (ODA-1h) for 30 days. To analyze the effects of ODA-1h, we calculated the total duration and bout frequency per day, and bout duration of lying and sleeping postures during the last five days of each treatment period. We also analyzed the populations of T cells, B cells, and NK cells in peripheral blood mononuclear cells (PBMC) by fluorescence-activated cell sorting and determined the concanavalin A (Con A) -induced proliferation rate of T cells. Results: The mean total time per day of lying during the ODA-1h treatment was significantly shorter than that during the tethering treatment (p<0.001). The Con A-induced proliferation rate of T cells during the ODA-1h treatment was significantly higher than that during the tethering treatment (p = 0.007). The proportion of NK cells in PBMC during the ODA-1h treatment tended to be higher than that during the tethering treatment (p = 0.062). Conclusion: Although ODA-1h may decrease lying time, it increases the available space for tethered cows towards that typically found in grazing and free barn feeding systems. This increased available space promotes the expression of normal behaviors such as walking and social behaviors except lying and may also improve the immune function of tethered dry cows, thereby improving their overall welfare.

• Physical Therapy Rehabilitation Science
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• v.9 no.3
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• pp.171-177
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• 2020

Objective: This study aimed to investigate the upper limb strength, active joint range of motion (AROM), and upper limb function in persons with chronic stroke using virtual reality training in combination with upper limb sensory stimulation. Design: Two-group pretest-posttest design. Methods: 20 subjects were divided into two groups of 10, the sensory motor stimulation and virtual reality training (SMVR) and virtual reality training (VR) groups. The training was conducted for 30 minutes per session, three times a week for 8 weeks.The participants' upper limb strength was measured via the hand-held dynamometer, joint angle AROM was measured via dual inclinometer, function was measured using the Jebson-Taylor hand function test and the manual function test. Results: Significant differences were observed in all groups before and after the training for upper extremity strength, AROM, and function (p<0.05). Between the two groups, the SMVR group showed significant improvement in muscle strength, AROM, and Jebsen-Taylor hand function test scores compared with the VR groups (p<0.05). Conclusions: In this study, we confirmed that sensory stimulation and VR had positive effects on upper extremity strength, AROM, and function of persons with chronic stroke. The results suggest that in the future, VR in combination with sensory stimulation of the upper limb is likely to become an effective method (a rehabilitation training program) to improve the upper limb function of persons with chronic stroke.

• The Journal of Korean Academy of Sensory Integration
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• v.7 no.2
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• pp.1-12
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• 2009

Objective : The purpose of this study is to find out whether group approach of sensory integration (SI) enhances sensory processing, fine motor function, and social skill for the children with sensory integration disorders. Method : Three children with problems related in sensory integration had got received 21 intervention sessions. We evaluated children with sensory profile(SP), social maturity test, Korean-developmental test of visual perception(K-DTVP), Bruininks-Oseretsky Test of Motor Proficiency(BOTMP) before-and after intervention. The statistical significance of data is tested by the Wilcoxon matched-pair signed rank test. Results : All data of post-intervention did not show any statistically significant differences; SP, social maturity test, K-DTVP, BOTMP. Conclusions : This study is to verify the effect of group SI intervention on sensory processing, fine motor function, and social skill for children with sensory integration disabilities. The results were not statistically significant. However, the average score after SI intervention has been improved in the section of fine motor and social skill comparing to that of pre-intervention period. It would have positive impact for children with sensory integration disabilities. It is needed to study with the larger number of target children and more often treatment session are suggested. The confounding variables also should be controlled in the further study.

• Journal of Family Resource Management and Policy Review
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• v.9 no.1
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• pp.75-93
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• 2005

It was quite an achievement to actualize family welfare, announcing' Healthy Family Basic Acts(2004)', which enabled to pursue comprehensive welfare policy including family life as a unit. This has enhanced family function, converting into consolidated family-centered service system, creating a new paradigm. The family life education must be spreaded and activated in the way of family welfare service, as to improve the quality of life, while reducing social problems regarding to the boundary of family. So This study aims at investigating the level of aspiration out from the family life education and the fact-revealing of training program within the family life. To examine these matters, 356 married women living in Seoul were selected. The results are as follows family life education and the training program each other showed little relevance that merely $45{\%}$ attended the program. Life planning program for Elderly was mostly asked in the research of the degree of family life education program. Besides, many of them demanded for the family care program for those who have divorced, remarried or adopted the child, showing their active will to solve them which have been dealt quite privately. Family life education is dealing with the current problem solving and future life planning. In this regard, it is strongly needed to experience and learn the dynamics of family life for lifetimes. Systemic family life education must be accomplished to solve, prevent and to cope with family problems.

• Journal of Families and Better Life
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• v.21 no.3
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• pp.133-146
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• 2003

The purpose of this study was to analyze the need for family life welfare service program, and to develope the program for managing in the Community Centers. The survey was conducted by interviewing 356 users and 360 non-users of Community Center, total 716 persons living in Daegu City, from October 8 to October 30 in 2002. The data were analyzed by the SPSS PC+ program applying t-test and ANOVA. The results were as follows : First, overall the needs for family life welfare service program, consisting of education program, facilities management and counseling program, and event program, was higher than 3.7 points. The needs level for event program was a little higher than other two programs. Second, the level of needs for family life welfare service program differed between user group and non-user group of the Community Centers. Third, the level of needs for family life welfare service program varied according to the demographic variables, such as sex, age, marital status, family life cycle, education level, vocation, monthly average income and housing type. Finally, Based on the results of needs analysis, 11 education programs, 4 facilities management and counseling programs and 5 event programs were developed for family life welfare service program. These programs developed in this study could be applied to diverse groups classified by age, social class, family life cycle of citizens. Also the programs should be applied in terms of family unit, as well as individual base to enhance the function of family life.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.56 no.5
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• pp.848-853
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• 2007

This paper presents a methodology of estimating incomplete information in electricity markets for analyzing the gaming behavior of Generating Companies (GENCOs). Each GENCO needs to model its opponents' unknown information of strategic biddings and cost functions. In electricity markets with complete information, each GENCO knows its rivals' payoff functions and tries to maximize its own profit at Nash equilibriurnl Nli) by acknowledging the rivals' cost function. On the other hand, in the incomplete information markets, each GENCO lacks information about its rivals. Load patterns can change continuously due to many factors such as weather, price, contingency, etc. In this paper, we propose the method of the estimation of the opponents' cost function using market price, transaction quantities. and customer load patterns. A numerical example with two GENCOs is illustrated to show the basic idea and effectiveness of the proposed methodology.

• International conference on construction engineering and project management
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• 2005.10a
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• pp.424-428
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• 2005

As the application of NPM in waste administration branch this paper proposes a new waste management method in order to increase the efficiency of resources and reduce the quantity of waste. First the matrix method is suggested which comprehensively consider and integrate the proposals of different government departments. Moreover the inhabitant's attitude toward the new waste management measures was investigated. Based on the investigation the evaluation function was made, which include three elements: necessary budget, the effect of cost decrease and the environmental burden decrease. The optimal method of budget allocation to maximize social welfare is proposed under the condition of limited budget by the evaluation function. By applying this system further local governments will be able to determine their adequate service level and budget size.

• Journal of the Korean Home Economics Association
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• v.49 no.5
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• pp.71-80
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• 2011

The purpose of this study was to investigate the mediating effects of anger expression on the relationship between child abuse experience and the method of resolving interpersonal conflicts. For the study, 3,050 4th to 6th grade children from Kyunggi-do were sampled. The collected data were analyzed using simple regression, multi regression and a path analysis. This study showed that child abuse experience influenced the method of resolving the interpersonal conflicts via the expression of anger. In other words, anger expression could function as a pathway between child abuse experience and the method of resolving interpersonal conflicts.