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구도심 교통섬을 활용한 복합커뮤니티 공간에 관한 연구 - 인천시 숭의로터리와 시장로터리를 중심으로 -
김정성(Kim, Jung-Sung),임종엽(Lim, Jong-Yup) 대한건축학회 2021 대한건축학회 학술발표대회 논문집 Vol.41 No.1
The purpose of this study is to present a method of community space construction using traffic islands at the old urban revolving intersection. The plan, which was reorganized into a pedestrian-oriented community space targeting Soongui Rotary and Bupyeong Market Rotary, was compared and analyzed to the characteristics. As a result of the study, space and cores should be planned according to the size of the traffic island and entry should be connected naturally. In addition, it is appropriate to plan both community spaces and commercial facilities and secure external vision from the perspective of pedestrians.
스위치드 릴럭턴스 전동기 구동을 위한 새로운 공진형 컨버터
김정성(Jung-sung Kim),김현중(Hyun-joong Kim),양이우(Iee-woo Yang),김영석(Young-seok Kim) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
In order to obtain better performance for a SRM(switched reluctance motor) drive, the commutation from one phase to another must be as fast as possible. In this paper a novel converter for SRM drive is proposed, which can accelerate the turn-off and turn-on time by using two capacitors to form a resonant circuit with the motor inductance. Two capacitors recover rapidly stored energy in the off going phase and establish rapidly the current rising in the on going phase. As a result, the current tall can be shortened and the dwell angle in the positive torque region can be extended. And comparing with the asymmetric converter, this converter has higher energy availability m energy conversion process and less number of switches.<br/> <br/>
김재준(Jae Jun Kim),정성일(Sung Il Jung),김정은(Jung Eun Kim),윤서영(Seo Young Yoon),김준원(Jun Won Kim),최태영(Tae Young Choi),이종훈(Jong Hun Lee) 대한생물치료정신의학회 2017 생물치료정신의학 Vol.23 No.3
Objectives:The aim of this study was to examine the physical, psychological and social factors influencing quality of life of the elderly living alone in Daegu. Methods:A stratified random cluster sample of 625 community-dwelling old people living alone in Daegu completed a questionnaire through face-to-face interview. Quality of life was evaluated using the World Health Organization quality of life-brief(WHOQOL-BREF) questionnaire. Depression was measured using the geriatric depression scale short form-Korea(GDSSF-K). The other data including sociodemographic characteristics, emotional and economical support, perceived health status and activity of daily living were collected. The data were analyzed using independent t-test, ANOVA, multiple regression analysis to evaluate the relationship between quality of life and other variables. Results:Subjects were composed of 107 male(17.1%) and 518 female(82.9%) and their mean age was 75.5 (SD= 5.8). Multiple regression analysis showed that quality of life was significantly associated with depression, psychiatric illness, educational level, income level, presence of caregiver, and whether living alone was a voluntary decision. Depression was the most influential factor affecting quality of life. Participants suffering more severe depression had lower quality of life. Conclusion:Present study suggested that the quality of life in the elderly living alone should be recognized in a multiple perspective ways considering psychosocial approach as well as clinical symptoms. We also would like to emphasize the comprehensive multidisciplinary team approach for improvement of the quality of life in elderly people who live alone.
철도하중을 고려한 기초구조물과 강관말뚝 연결부 거동에 관한 실험적 연구
김정성(Jung-Sung Kim),김대상(Dae-Sang Kim),조국환(Kook-Hwan Cho) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
As the connection between spread footing and pile is very important structural connection it acts as the inter-loading medium to transfer the rail loads applied by superstructure to ground through the body pile of foundation. The experimental study is the method how to reinforce the pile cap between steel pile and footing utilizing perfobond plate with protruding keys. It were experimented on the compression punching tests and bending moment tests against the vertical loading and horizontal loadings acting on head of steel tube pipe. As a result the tension capacity of the perfobond plate exhibited the superior performance due to the interlocking or dowel effects by the sheared keys of perfobond plate and there were showing the sufficient strength and ductile capacity against the bending moment of horizontal loading tests. Therefore it is judged that "the embedded method of perfobond plate in pile cap and footing" which is utilizing the shear connection of perfobond plate with protruding keys has a sufficient structural stability enough to be replaced with the current specification of reinforced method of pile cap with vertically deformed rebar against the vertical compression loads and bending moments that are able to occur in the combination structure of steel pile and the footing foundation.
신라,고려의 통일요인과 한반도 통일: 대외환경을 중심으로
정성임 ( Sung Im Jung ) , 김세라 ( Se Ra Kim ) 조선대학교 동북아문제연구소 2014 동북아연구 Vol.29 No.2
이 논문은 삼국시대와 후삼국시대의 대외환경과 통일 간 연계성을 비교 고찰하고 이를 통해 현재 한반도 통일환경 조성을 위한 정책방향을 도출하는데 목적이 있다. 대외환경 측면에서 신라와 고려 통일의 주요 요인은 친선정책을 일관되게 펼치며 유리한 통일환경을 조성했다는 점이다. 신라는 유일한 패권국가인 당나라와의 친당정책에 주력하여 군사연합을 이끌어내며 한반도에서 통일을 이루었다면, 고려는 중원 국가들과 거란이 상호 견제하는 다극체제 하에서 후삼국 국가들과의 외교에 보다 주력하게 되며 통일을 완성한 것이다. 최근 동북아는 미국 중심의 단극질서가 다극질서로 변화하며 협력과 갈등이 공존하는 양상을 띠고 있다. 우리는 한미동맹을 유지하면서 중국 및 러시아와 경제협력 증진을 통해 우호적인 대외환경을 조성하고 이를 기반으로 남북관계에 보다 주력할 필요가 있다. 특히 대북관계의 진전을 위해 ‘선 신뢰’의 정책으로 적극적인 대화와 교류에 나서야 한다. This study aims to derive policy directions in fostering the unification of the Korean Peninsula by comparative method of the relations between the unification and the external environment in the Three Kingdom period and the post-Three Kingdom period. One of the key factors which made Silla and Goryeo achieve unification is to pursue the Good Neighbor policy as well as build a favorable environment. The main parts of the Good Neighbor policy differed on the characteristics of the international system. Silla practiced the Good Neighbor policy towards the Tang Dynasty under the Tang Dynasty-centered unipolar system. This policy made Silla promote the military alliance with the Tang Dynasty and it led Silla to unify the Korean Peninsula. In contrast, under a multipolar system, Goryeo reunified the Korean Peninsula focusing on practicing the Good Neighbor policy toward countries within the Korean Peninsula. Recently, mutual cooperation and conflicts are coexisting in Northeast Asia, changing from the US-centered unipolar world order to a multipolar order. This study suggests that Korea needs to create an amicable international environment through promoting economic cooperation with China and Russia, while simultaneously maintaining the Korea-US alliance. And the Korean government especially has to practice a ‘trust-first’ policy for making significant progress on South-North Korean relations.