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연구논문 : 대학생들의 인터넷 중독에 영향을 미치는 요인에 대한 연구
권미영 ( Mi Young Kwon ),황지영 ( Ji Young Hwang ),정혜윤 ( Hye Yoon Jung ),송시형 ( Shi Hyeong Song ) 극동대학교 사회복지연구소 2013 글로벌사회복지연구 Vol.3 No.2
본 논문의 목적은 대학생의 인터넷 중독에 영향을 주는 요인에 대한 분석을 통해 대학생의 정신건강을 위한 공적프로그램 도입에 대한 함의를 제공하는 것이다. 분석자료는 을지대학교 강남 을지 병원 중독연구소에서 대학생 453명을 대상으로한 설문지이다. 설문조사에 사용된 설문지는 인터넷 중독을 측정하는 인터넷 중독 척도(Young척도), 불안을 측정하는 불안척도(STAI)와 우울을 측정하는 Beck의 우울척도(BDI)로 구성되었다. 분석결과 첫째, 연령 및 학년은 인터넷 중독에 유의미한 영향을 미쳤다. 둘째, 나이가 어릴수록, 학년이 낮을수록 불안과 우울에 빠지기 쉬웠다. 셋째, 무엇보다 불안이 대학생의 인터넷 중독에 가장 큰 영향을 미치는 요인이었다. The purpose of this research to suggest implications on introduction of public-program for college students` mental health through analysing the factors which impact on internet addiction of college students. The analysing data is questionnaire intended to 453 college students in Kang- Nam Eulji hospital addiction institute. The questionnaire consisted of internet addiction scale (Young-scale), anxiety scale (STAI) and depression scale (BDI). This study reveals three main findings. Firstly, age and grade have an effect on internet addiction. Second, the younger, the lower grade, they are likely to be depressed and anxiety. Third, most of all, the anxiety has the most effect on internet addiction of college students.
열형광 CaSO₄:Dy 소자의 최적 제조조건에 관한 연구
김장렬,남영미,장시영,김두영,양정선,박재우 제주대학교 산업기술연구소 2000 尖端技術硏究所論文集 Vol.11 No.1
An experimental investigation has been performed to determine optimal conditions for preparing the thermoluminescent CaSO4:Dy pellets which have been widely used as personal radiation dosimeter material. Our investigation has shown that an optimal weight concentration of the dopant Dy in the bulk CaSO4:Dy is 0.1 mol%, and an optimal temperature of adding Dy in the preparing process is 320 ℃. An optimal time and temperature for sintering the CaSO4:Dy crystal produced from the chemical process are found to be 2 hours and 800 ℃, respectively. The maximum thermoluminescent sensitivity was observed when the CaSO4:Dy crystal was pulverized to grain sizes of 63 - 200 ㎛ in diameter before being fabricated into pellets. The commercial Teflon was selected as an adhesive for the fabrication of the CaSO4:Dy pellets with an optimal mixing ratio of the Teflon and CaSO4:Dy being 70 to 30 in weight.
열형광 CaSO₄ : Dy 소자의 최적 제조조건에 관한 연구
양정선,장시영,김장렬,김두영,남영미,박재우 濟州大學校 産業技術硏究所 2000 산업기술연구소논문집 Vol.11 No.1
An experimental investigation has been performed to determine optimal conditions for preparing the thermoluminescent CaSO_(4):Dy pellets which have been widely used as personal radiation dosimeter material. Our investigation has shown that an optimal weight concentration of the dopant Dy in the bulk CaS0_(4):Dy is 0.1 mol%. and an optimal temperature of adding Dy in the preparing process is 320℃. An optimal time and temperature for sintering the CaSO_(4):Dy crystal produced from the chemical process are found to be 2 hours and 800℃. respectively. The maximum thermoluminescent sensitivity was observed when the CaSO_(4):Dy crystal was pulverized to grain sizes of 63 - 200 m in diameter before being fabricated into pellets. The commercial Teflon was selected as an adhesive for the fabrication of the CaSO_(4):Dy pellets with an optimal mixing ratio of the Teflon and CaSO_(4):Dy being 70 to 30 in weight.
우리나라 中小企業의 不實化豫測模型開發에 關한 實證硏究 : 정량변수모형과 정성변수통합모형의 비교분석 관점에서
金暎圭,盧時千 韓日經商學會 1999 韓日經商論集 Vol.17 No.-
Recently in Korea, there has been increasing bankruptcy especially among small and medium-sized firms which have been played major roles for the growth of Korean economy. So this situation has become a serious social and economic issue. Accordingly this study attempted an empirical analysis to develop a prediction model available by Multivariate Discrimination Analysis, which can alarm failure potentials to small and medium-sized firms earlier. The empirical analysis results can be showed as follows. First, it is possible to develop a prediction model with high accuracy for small and medium-sized firms' failure. Until now studies on this issue have not been improved largely. Second, the predictive accuracy of the model was comparatively high within one year or two years before the bankruptcy the predictive accuracy has rapidly dropped. This shows that the deterioration accelerates rapidly when nearing the bankruptcy point even if it takes a long time. Third, the predictive accuracy could be enhanced if the qualitative factor such as business age, industrial category and managerial style is considered at the same time with quantitative factors in developing a business failure prediction model. However, this study has a few limitations. First, it is not easy to obtain adequate data with regard to small and medium-sized business failure. Second, these studies generally may produce different outcomes from cne another, pending on the number of samples and their range, research methods and so forth. Third, this study assumes normal distribution of explanatory variables but this assumption is not always realized. Under such circumstances, it may become necessary to utilize logit or probit model to help make prediction more accurate.
이시영,이효찬 중앙대학교 산업경영연구소 1999 산업경영연구 Vol.8 No.1
본 연구의 목적은 최근에 관심을 끌고 있는 정치경제학적 이론을 간략히 소개하고 실질적인 졍재정책의 적용사례를 제시하는데 있다. 기존 전통경제학에서 정부의 역할은 지극히 제한되어 정부의 개입은 시장의 실패가 발생하였을 때만 정당화되었다. 반면 정치경제학적 접근은 기본적으로 경제정책의 결정은 정치집단의 상호작용의 결과로 가정하고 있다. 그리고 정치적 이해의 상호작용에 의하여결정된 경제정책은 (경제학적 관점에서 보면) 비효율적일 수 있다는 점을 강조하고 있다. 실질적인 사례를 통하여 정부 경제정책의 형성과정을 설명하고 그러한 정책들이 정치적 거래비용을 최소화하는 정책임을 보여주는데 본 논문의 의의가 있다고 할 수 있다. This paper introduces the recent developments of political economic approach and provides some applications. The traditional economic approach has failed to successfully explain the emergence of the existing economic policies. On the other hand, the political economy approach that we adopt here provides some realistic insights to the making of economic policy. The first application deals with the amendments of the U.S. anti-dumping laws. We claim that the main motivation behind these amendments aimed to delay the exits of (politically important) declining industries. The second application concerns with ″big deal″ (swap of subsidiaries among Chaebols) scheme. The existing Korean government selected this particular scheme to minimize its political costs (rather than enhance economic efficiency). The antagonistic mood toward foreign ownerships of domestic firms coupled with the high unemployment were responsible for this selection. The third application explains ″the wind from the North″. It explicitly provides the motive of the incumbent government to form the coalition with a ″potential″ enemy. When the incumbent government suffers from the credibility problem, the coalition with the enemy may temporarily create ″potential threat″ to its own citizens and help to win the re-election bid. The fourth application explains how implicit government guarantees had been concerns with conflicts of interests between the federal and local governments and may generate economically inefficient delay of investment in social infrastructures.
해남유적지를 사례로 살펴본 문화ㆍ역사유적지를 테마로 하는 주제공원의 특징
이시영,심준영 경희대학교 디자인연구원 2000 예술· 디자인학연구 Vol.3 No.1
At the time of increasing of tourist demand, this study suggests the theme park which has the theme of historical and cultural relics, as the way that could solve the problems of historical and cultural tour and diverse tourist desire. Before that, this study examines the cases over domestic and overseas which have the theme of historical and cultural relics as the concept of the theme park. Than, as an internal case study, this study also presents the Proposal for the HaeNam Natural Historic Park which was planned at Haenam on 1998 by using dinosaur fossils as the main source of its concept. By doing so, this study aims at finding out the possibilities of The theme park which has the cultural tourist relics of Korea preserving the her own distinctive cultural heritage in the world.
강영환,최재시,윤기현 연세대학교 대학원 1980 延世論叢 Vol.16 No.2
The electrical conductivity of highly pure polycrystalline Gd₂O₃, Ho₂O₃ and Yb₂O₃ has been measured from 650 to 1050℃ under oxygen pressure range of 10^(-6) to 10² torr. Plots of logσ vs. T at constant oxygen pressure are found to be linear. and the conductivity dependence of oxygen pressure in the high temperature region (750-1050℃) is approximated by σ α po₂1/5.3. This shows that the conduction mechanism is associated with doubly ionized metal vacancies. Fairly low activation energy and the lack of oxygen pressure dependence are found over the temperature range of 650 to 750℃. The conduction mechanism is explained by not metal vacancies, but hopping oxygen ions in the oxides. The sesquioxides exhibit mixed conduction with some ionic conduction and major electronic conduction carriers.
김시형,김영진,남순현 大韓小兒齒科學會 1995 大韓小兒齒科學會誌 Vol.22 No.2
The diastema is defined as a space greater than 0.5millmeter between the proximal surfaces of adjacent teeth. It is a normal stage in the primary dentition and the early mixed dentition(i.e. Ugly duckling stage), especially between the ages of 7 and 12 years. Usually these diastmas close completely after eruption of permanent maxillary cuspid. Genetic factor, heavy labial frenum, habits, degree of deep bite, direction of long axis of incisor and mesiodens can cause midilne diastema. Of these, mesiodens located between both maxillary central incisors can cause diastema. The present case reports show that the abnormal midline diastema caused by mesiodens during Ugly-ducking stage have become spontaneous closure after surgical removal.
공동주거단지 계획에 관한 연구 : 마포로변 신시가지 조성계획안을 사례로 case study of the Proposal for the New Town in MaPo-Gu
이시영 경희대학교 부설 디자인연구원 2002 예술· 디자인학연구 Vol.5 No.1
Mass housing as stacked flat is the most universal housing style of urban cities at present and an apartment housing type has been become popular in Korea as well. Owing to the high land price and overpopulation of the urban city, the mass housing has been rapidly developed. This can make use of various advantages such as competitive construction cost, efficient land usage, thermal efficiency, joint management and so forth, however this is unfavorable in noise, lighting, privacy, fire and ventilation. In this point of view, this study examines the layout type and characteristics of mass housing and aims at presenting the new model for mass housing through the Mapo New Town Proposal.