• 제목/요약/키워드: social variation

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S-transform을 이용한 배전계통의 이벤트와 변동 판별 알고리즘 개발 (Development of the Discrimination Algorithm for Event and Variation in Distribution System Using S-transform)

  • 이순정;서훈철;김철환
    • 전기학회논문지
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    • 제61권5호
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    • pp.657-663
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    • 2012
  • Recently, by increasing of devices which are sensitive to power quality, the deterioration of power quality has been accelerated. For this reason, the social and economic losses are increased. So not only correct measurement and evaluation, but also countermeasure for improvement of power quality is surely necessary for both electric power supplier and consumer. In this paper, the discrimination algorithm for events and variation occurred in distribution systems using S-transform is proposed. Firstly, we review for events and variations that occur in distribution system. Next, we simulate events and variations on various conditions using ElectroMagnetic Transient Program(EMTP). For the simulation, the IEEE 13 Node Test Feeder and KEPCO's distribution system is modeled. Finally, for the analysis, a modified wavelet transform known as S-transform is adopted to find out the characteristics of each events and variations.

후기산업사회 지역복지정책의 발달원인에 관한 이론적 고찰 (A Framework for the Comparative Study of Local Social Policy in the Post-Industrial Era)

  • 장동호
    • 한국사회복지학
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    • 제59권3호
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    • pp.229-252
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    • 2007
  • 최근 지역복지정책의 발달원인을 규명하기 위한 비교사회정책 연구들이 국 내외적으로 크게 증가하고 있다. 대부분 실증분석에 기초한 이 연구들은 방법론적 측면에서는 더욱 정교해지고 있지만, 이론적으로는 전통적인 거시 복지국가 발달이론의 틀을 그대로 적용하고 있는 상황이다. 그러나 초기산업사회라는 특정 상황을 바탕으로 발전한 복지국가 발달이론들로는 후기산업사회에서 이슈가 되고 있는 지역복지정책의 발달을 이해하는 데 한계가 있을 수 있다. 이러한 시각에서 본 연구는 지역복지정책 비교연구들이 무비판적으로 수용해온 대표적인 복지국가 발달이론들, 즉 산업화이론, 권력자원이론, 그리고 국가중심이론의 적용한계점을 논의한다. 그리고 그에 대한 대안으로서 신사회위험론, 신공공관리론 그리고 정부간 관계론의 이론적 유용성을 검토한다. 최종적으로, 지역복지정책 발달의 비교분석을 위한 새로운 이론적 틀을 제시한다.

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대학생의 사회공포수준과 치과공포수준의 관련성 (Association between social phobia level and dental fear level of college students)

  • 박보영;조한아;방소영;오민정;이은지;이환희;정재민;윤미숙
    • 대한치과의료관리학회지
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    • 제11권1호
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    • pp.89-95
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    • 2023
  • Social phobia is a mental disorder that triggers physical reactions, such as cold sweats, headaches, and panic attacks, as a result of anxiety about a particular situation. Individuals with social phobia are thought to be more sensitive to dental anxiety and may have difficulty visiting the dentist as a result. This study aimed to determine the relationship between social phobia and dental fear among college students, who are reported to have a high prevalence of social phobia. A total of 120 survey responses were analyzed. To investigate the variation in dental fear levels based on the level of social phobia, the total social phobia score was divided into two groups: 41 points or more, and 40 points or less. The disparity in dental fear scores was then analyzed using a t-test. The study found that the average score for dental fear was statistically significantly higher in the group with a total social phobia score of 41 points or more compared to the group with a total score of 40 points or less (p<0.05). Furthermore, the group that scored 41 points or higher on the social phobia scale reported experiencing symptoms such as feeling nauseous at the dentist (3.29 points), sweating upon entering the dentist (3.13 points), and feeling afraid when looking at the dentist (3.13 points). The score was high (p<0.05). Therefore, dental patients exhibiting anxiety symptoms require a comfortable treatment environment to alleviate dental fear, and safe, pain-free dental treatment techniques must be employed.

한국의 장수동향과 그의 상관요인에 관한 분석 (The Factors. affecting Longevity and its Changing Trend in Korea)

  • 조유향
    • 보건교육건강증진학회지
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    • 제6권1호
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    • pp.34-47
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    • 1989
  • The changing trend of longevity from 1955 through 1985 and its interprovincal variation were studied with longevity rate as indicator. In order to detect the affecting factors of longevity rate, eleven urbanalizational, geographic-environmental, demographic and social-economic variables were employed to carry out multiple stepwise regression analysis. The data used for this study were from Population Census Reports 1955-1985 published by EPB and Year book of Public Health and Social Statistics 1986 published by Ministry of Health and Social Affairs and other reference. Subsequent to that longevity rate decreased during 1950's it has increased continuously by the yeat of 1980's. This trend was especially remarkable in the south area and the GIRI mountain area in Korea. The stepwise regression analysis shows that the longevity rates were significantly associated with the independent variables, and the dependent variables explained at the level of 93.7percent-99.9 percent. Longevity is a reflection of the demographic and socio-economic, environmental and health resourses factor etc., longevity problems cannot be dealt with in isolation. The possible research and services which could be provided by government will be discuss.

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조직이론의 관점에서 본 오피스 공간 계획유형에 관한 연구 (A Study on Typological classification of Office Layouts based on Organization Theories)

  • 홍기남;권영;최왕돈
    • 한국실내디자인학회:학술대회논문집
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    • 한국실내디자인학회 2003년도 춘계학술발표대회 논문집
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    • pp.39-43
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    • 2003
  • This study aimed to understand changing of work organization on variation of social organization and research typological classification of office layout based on preceded understanding. Buildings result from social needs and accommodate a variety of functions-economic, social, political, religious and cultural. Therefore, We can explain historical development of the constructing a building we understand the society and studying, After The modern age, it select a three buildings that there is an historical value of office Layouts planning and comprehend that make use sampling type of office work structure, studies a felicitous Typological classification of office Layouts. They find the development direction of a hereafter office of the task organization out according to it, And we suggest to Typological classification of Office Layouts based on Organization Theories.

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고혈압 질환의 지역간 입원의료이용 변이에 관한 연구 (A Study on Small Area Variations of Hospital Services Utilization in Hypertensive Disease)

  • 권영채;이경수
    • 한국임상보건과학회지
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    • 제1권1호
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    • pp.9-17
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    • 2013
  • Purpose. This study is to find the degree of variations and trends of hospital services utilization for hypertensive disease, and have done the comparative analysis of the factors affecting occurring some variations. For this, this study uses the data for patients-survey and health-survey of a regional society by Korea Institute for Heath and Social Affairs in 2008; The regional units are classified into 160 of medium size medical service areas. Methods. I understand the level of variation by using index of Extremal Quotient(EQ) and Coefficient Variation(CV), and analyze critical factors influencing some differences in hospital services utilization by using multi-regression model. Results. The main results are followed:The first, in case of rate of hospital services utilization according to standarization of sex and age by small area, I find the variations of EQ 5.3 and CV 0.3; In Ho-nam, especially, the variation of high rank of 10 of age shows higher distribution. The second, the results analyzing the factors influencing on hospital services utilization by multi regression model are that a number of bed hospitals is significant positive relationship and EQ-5D of health behavior is significant negative one. Conclusions. To increase equity of hospital services utilization for hypertensive disease, this study requests the appropriate supply management of bed hospitals by region, efficient allocation of resources, and revitalization of the health promotion program.

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극소 및 초극소 저체중출생아 출생과 사망의 사회적 불평등 (Socioeconomic Disparities in Pregnancy Outcome and Infant Mortality: Extremely Low Birth Weight and Very Low Birth Weight Infants in Korea, 1995-2010)

  • 박혜정;손미아
    • 보건행정학회지
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    • 제25권4호
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    • pp.277-284
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    • 2015
  • Background: This study investigates the relationship of socioeconomic status with adverse birth outcomes (low birth weight, preterm birth) and the relationship of socioeconomic status with infant mortality, using the birth cohort in Korea, 1995-2010. Methods: 8,648,035 births from National Statistics Offics, 1995-2010 were studied with respect to social variation in adverse birth outcomes and infant mortality in Korea. The effect of social inequality was examined against adverse birth outcomes and infant mortality using multivariate logistic regression after controlling for other covariates. Results: Social inequality were observed in adverse birth outcomes: low birth weight (LBW, 1,500-2,499 g), very LBW (1,000-1,499 g), and extremely LBW (500-999 g) as well as moderately preterm birth (PTB, 33-36 weeks), very PTB (28-32 weeks), extremely PTB (22-27 weeks), and infant mortality. The effect of social inequality was higher among moderately LBW (1,500-2,499 g) and PTB (33-36 weeks) than very or extremely LBW and PTB. Conclusion: The social inequality in adverse birth outcomes (low birth weight and preterm) and infant mortality existed and increased in Korea from 1995 to 2010. The effect of maternal education on adverse birth outcomes as well as infant mortality was apparent in the study results. Especially, social inequailiy in infant mortality was greater among the sub-normal births (low birth weight [1,500-2,499 g] or preterm birth [33-36 weeks]), which suggests, social interventions should aim at more among the subnormal births. This study suggest that tackling inequality in births as well as infant mortality should be focused on the social inequality itself.

한국의 소셜네트워크서비스 신뢰지수 KTI 설계 (Development of The Korean Trust Index for Social Network Services)

  • 김유경;지은화;신용태
    • 인터넷정보학회논문지
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    • 제15권6호
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    • pp.35-45
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    • 2014
  • 소셜 네트워크를 통해 생산 유통되는 정보들은 신뢰할 수 없는 불분명한 정보들이 많고 그런 정보들이 무분별하게 확산되기 때문에 사용자들은 정보에 대한 신뢰성 여부를 판단하기가 힘들다. 특히 정보의 신뢰성에 대한 평가가 전적으로 사용자들의 판단에 맡겨지고 있는 상황에서, 온라인 정보의 신뢰도에 대한 체계적인 평가 방안의 마련이 절실하다. 본 논문에서는 소셜네트워크서비스의 신뢰도 평가 지표로서 KTI (Korean Trust Index for SNS)를 설계하여, 서비스 사용자들이 정보의 신뢰성을 판단할 수 있는 기준을 제시하였으며, 이를 통해 사회적 신뢰 수준을 분석할 수 있도록 하였다. SNS의 서비스 특성을 고려하여, 신뢰도에 영향을 주는 요인을 정의하였고 이를 바탕으로 온라인에서 유통되는 정보에 대한 신뢰도를 평가할 수 있는 신뢰모델을 설계하고 신뢰지수 KTI를 제시하였다. 신뢰지수 KTI의 개발은 SNS에 대한 신뢰 수준을 측정하여 이를 정량화함으로써, SNS 연결망을 효율적으로 활용하기 위한 신뢰 확보가 가능할 것으로 기대한다.

중국동포(Chinese-Korean) 집단적 거주지에 나타난 지역사회에 대한 중국동포의 인식변화에 관한 연구 (A Study on Variation of Chinese-Korean's Recognition to the Local Community in their Enclave)

  • 김영로
    • 한국사회복지학
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    • 제63권3호
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    • pp.133-156
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    • 2011
  • 본 연구는 서울 영등포구 대림동 인근에 집단적으로 거주 및 활동하고 있는 중국 동포들을 심층 면담하는 질적연구방법을 사용하였다. 이를 통해 이들의 이주초기와 현재의 지역사회에 대한 인식변화 및 현실문제를 극복하려는 대응방법을 고찰하였다. 이들이 처해 있는 현실과 갈등, 현안의 극복 노력, 동포사회 내부변화와 지향방향 등을 이해하는 것은 우리사회로의 통합에 핵심변수가 된다. 이들은 이미 방대한 거주지를 형성했고 소수자집단화 되었으며 인정투쟁을 하는 동시에 권력의 열세를 극복하고자 정치권력을 쟁취하려고 시도하고 있다. 이들에 대한 사회복지적 개입은 외국인 유입으로 초래되는 사회파편화 방지를 위해 보다 적극적인 것이어야 하고 다민족 다문화 현상에 대한 우리의 적응과 이들을 주민으로 받아들이기 위한 상호계몽적인 질서를 구축, 전파하기 위한 방안이어야 한다.

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초연결사회의 정치경제학적 기원과 성격 (The Origin and Nature of the Hyper-Connected Society in the light of Political Economy)

  • 박지웅
    • 사회경제평론
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    • 제31권3호
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    • pp.271-305
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    • 2018
  • 오늘날 우리는 초연결사회에 살고 있다. 초연결사회란 초연결성(hyper-connectivity)으로 연결된 네트워크 사회(network society)를 말한다. 이러한 초연결성의 기술적 토대가 오늘날의 제4차 산업혁명임을 잘 알고 있다. 이 글에서는 산업혁명의 단계적 발전의 패턴을 밝힘으로써 초연결사회의 기원을발견하고자 한다. 산업혁명을 포함한 기술혁명의 변화의 패턴은 다음과 같이 지극히 단순하게 요약할 수 있다. (1) 기술혁명${\rightarrow}$네트워크혁명. (2) 네트워크혁명${\rightarrow}$사회적 네트워크의 변화 (3) 물질의 혁명${\rightarrow}$정신의 혁명. 산업혁명의 단계적 발전의패턴은 다음과 같다. 따라서 네트워크 혁명의 차원에서 본다면 초연결사회의 기원은 1840년 이후 미국에서 일어난 철도혁명(2차 산업혁명)에서 찾아볼 수 있다.