• Title/Summary/Keyword: 연결패널

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Insulation Method and Performance Evaluation for Fastening Unit of ALC Pannel-Curtain wall (ALC 패널 커튼월의 패스닝 유닛의 단열 방법과 성능 평가)

  • Kim, Bongl-Joo;Kim, Kyeong-A;Park, Je-Min
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2011.05a
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    • pp.107-110
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    • 2011
  • In this study is to improve insulation performance that are the most weak insulation part of fastening unit of the curtain wall. It was produced that thought out to minimize mullion and connecting part, and evaluated performance that make a layer of insulation in the middle by using vibration-proof rubber or silicon. Vibration-proof rubber insulation is 2.6℃~4.0℃ higher and silicon insulation is 2.4℃ higher than non-insulation. Therefore the insulating layer of fastening unit is necessary.

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Hybrid Uninterruptible Power Supply for Apartment Housing (공동주택용 하이브리드 무정전전원장치)

  • Lim, Seung-Beom;Lee, Won-Il;Kim, Myeong-Soo;Hong, Soon-Chan
    • Proceedings of the KIPE Conference
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    • 2015.07a
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    • pp.530-531
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    • 2015
  • 본 논문에서는 공동주택용 하이브리드 무정전전원장치(UPS: Uninterruptible Power Supply)를 제안한다. 제안한 하이브리드 UPS는 기존의 UPS 시스템에 DC/DC 컨버터를 추가하여 태양광 패널과 연결 가능하여 기존의 태양광 PCS(Power Conditioning Supply)의 기능을 할 수 있다. 또한 정류기를 양방향으로 동작시켜 피크 부하시나 전력 부족시 전력을 전원단으로 회생시킬 수 있어 기존의 ESS(Energy Storage System) PCS 기능도 할 수 있다.

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Global Trends and Developments on Automotive UX/UI (글로벌 자동차 UX/UI 동향 및 발전 방향)

  • Ryu, Hyomin;Kim, Kyongho
    • Annual Conference of KIPS
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    • 2019.10a
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    • pp.1145-1148
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    • 2019
  • 최근 자동차 인스트루먼트 패널은 디지털 콕핏으로써 차량 상태 외에도 다양한 정보와 기능을 제공한다. 그러나 무분별하게 표시되는 정보는 오히려 운전자의 주행 집중을 방해하기에, 운전자에게 필요한 정보만을 효율적으로 제공하기 위한 디자인 연구가 진행되고 있다. 본 연구에서는 국내외 자동차 제조사 및 부품사의 양산 차량과 콘셉트카의 디지털 콕핏을 분석해 도출한 개인화, 연결성, 사용성이라는 주요 키워드를 토대로 글로벌 자동차의 UX/UI 동향과 기술개발 현황을 분석하였고, 이를 기반으로 미래 자동차 디지털 콕핏의 발전 방향을 키워드별로 제시하였다.

Optimum Connection Structure for PV Panel Considering Shadow Influence (그림자 영향을 고려한 태양광 패널의 최적 접속 구조)

  • Jeong, Woo-Yong;Kim, Yong-Jung;Kim, Hyosung
    • Proceedings of the KIPE Conference
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    • 2019.07a
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    • pp.210-212
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    • 2019
  • 태양광발전에서 PV panel의 출력 전압 및 전류는 제한적이기 때문에, 필요로 하는 전원 조건을 충족시키기 위하여 PV panel을 직병렬로 연결하여 PV array를 구성한다. 이때, PV array에 부분적인 그림자가 발생할 경우 최대발전전력은 PV array의 접속 구조와 블록킹 다이오드 유무에 따라 달라진다. 본 논문에서는 PV panel의 직병렬 접속에 따른 PV array의 6가지의 접속 구조와 블록킹 다이오드 유무를 고려하여, 부분적인 그림자가 발생할 경우 발전전력을 극대화할 수 있는 최적의 접속 구조를 제시하고 시뮬레이션과 실험을 통해 검증하였다.

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Spectrum and Equivalent Transient Vibration Analysis of Small Composite Satellite Structure (소형 복합재위성의 스팩트럼 및 과도진동해석)

  • Cho, Hee-Keun;Seo, Jung-Ki;Myung, Noh-Hoon
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.37 no.6
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    • pp.586-594
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    • 2009
  • This paper is the study on random, sinusoidal and shock vibration responses for the STSAT-3(science and technology satellite-3) proto-model which is the first small size all-composite satellite in Korea. The structure system of the STSAT-3 forms box type structure by joining several hybrid sandwich panels comprised of honeycomb core and carbon fiber reinforced laminated composite skins on both side. Mode shape, stress, displacement and acceleration responses are obtained on both the frequency domain and time domain by means of a commercial FEA software MSC/NASTRAN. From these analysis results, failure, safety factor and design validity are assessed. These results can be successfully applicable as reference data when a new satellite is developed as well as giving out an excellent criteria in satellite vibration treatment design.

The Effect of EU-ETS Introduction on the Determinants of Electricity Net Export Connected Power Grid in Europe (유럽의 탄소배출권 거래시장 도입에 따른 연결계통국가들의 전력 순수출 결정요인 변화 분석)

  • Yoon, Kyungsoo;Park, Changsoo;Cho, Sungbong
    • Environmental and Resource Economics Review
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    • v.28 no.3
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    • pp.385-413
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    • 2019
  • This study examines the determinants of net export of electricity among 30 European countries sharing electricity grid during the period of 1990~2014 by separating the sample period before and after 2005 in which ETS was introduced in Europe. The empirical method used in this study is generalize least squared one considering both heterogeneous and serial correlation in the balanced panel data. According to the empirical results, after 2005 introducing the ETS, holing energy resources, concentrating only on few electricity generation resources, and nuclear electricity generation had played more important role in net export of electricity, while renewable energy had negative effect on net export of electricity and coal and gas generation have no effect on net export after introduction of ETS in Europe probably because of high environmental cost. The policy implication of the results would be that reconsidering each country's optimal generation mix strategy and its role in case freely trading electricity.

Flow Characteristics and Wind Loads on the Solar Panel and Floating System of Floating Solar Generato (부유식 태양광 발전기의 패널과 부유체에 작용하는 풍하중과 유동특성)

  • Ryu, Dae-Gyeom;Lee, Kye-Bock
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.10
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    • pp.229-235
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    • 2019
  • A floating photovoltaic generation system is a new concept that combines existing photovoltaic generation technology with floating technology. This is installed in the water not on conventional land and a building. The system is designed as a unit module type that can be connected to other modules according to the power generation capacity, thereby forming a large-scale power generation facility. As a renewable energy source, it is composed of a floating structure, mooring device, photovoltaic power generation facility, and underwater cable. Because this system is installed outdoors, the effect of the wind load on the structure is very large. In this study, the wind loads most affected on the floating photovoltaic generation structure were obtained by computational fluid dynamic analysis. The flow characteristics and wind loads were analyzed for a range of wind orientations and angles of inclination. The analysis showed the position and magnitude of the maximum wind load to the wind direction and the flow characteristics around the solar panel and floating system. The wind load increased with increasing angle of inclination of the panel to the ground.

The Cyber Transformation of Marketing Mix Model : An Empirical Study of Korean On-line Shopping Malls (마케팅 믹스 모델의 사이버 전환에 관한 실증적 연구)

  • 이영순;서봉철
    • Journal of Distribution Research
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    • v.7 no.1
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    • pp.105-127
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    • 2002
  • This paper presents an analysis of how the business models of organizations are getting transformed in the Marketspace created by the Internet. We use a research model comprising the transformation scores of four Ps(Product, Price, Promotion, and Place) as dependent variables and three dimensions, Demographics, Technology, and Community elements on the Websites, as explaining variables about the Cyber Transformation of the 4Ps. While most existing literatures have focused on Website's technology, our research model includes 22 five-point-scale items; 10 Demographics /Technology items and 12 Community items. To measure the 4P's transformation scores, the authors selected 14 workable items from the Marketspace Model by Dutta, Kwan, & Segev(1997). A sample of 123 shopping mall Websites comprising three categories(grocery, jewelry/accessory, and cosmetics) from the 100hot.co.kr list are evaluated and the data is analyzed by SPSSWIN 8.0 version. The result shows that there are five significant factors, Technology, Interaction, Connectedness, Business Features, and Domain, while the average transformation scores of 4Ps are at very low level. The factor scores are used in regression analysis for each P. Two factors, Technology and Interaction are influencing all four Ps; Connectedness is influencing only two, Product and Place. Organizations must not simply take their existing business models. They have to adopt the Technology items(navigation, logo, e-mail, guide, graphics) and to facilitate the Interaction items(consulting, number/quality of bulletin boards, participation, offline events) and Connectedness(club activation, contents, partner/site link, entertainment contents) in order to get transformed in the Marketspace successfully in the near future.

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Developmental Pathways from Child Abuse to Delinquency (피학대아동이 비행에 이르는 발달경로)

  • Chung, Ick-Joong;Park, Hyun-Sun;Ku, In-Hoe
    • Korean Journal of Social Welfare
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    • v.58 no.3
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    • pp.223-244
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    • 2006
  • The purpose of this study was to investigate the developmental pathways that mediate the effects of child abuse on delinquency. Data from the first wave of 'Seoul Panel Study of Children(SPSC)' were analyzed. The subjects consisted of 1,811 4th grade students from elementary schools. Structural equation model was employed for statistical analyses. The results showed that the relationship between child abuse and delinquency was indirectly mediated by self-esteem, peer rejection, and school attachment. The hypothesized structural model had a good model fit. Abused children were more likely to have low self-esteem, which was associated with higher levels of delinquency. In addition, abused children were more likely to be rejected by peers and to have low school attachment, which was also associated with higher levels of delinquency. Implications for social work practice from this study were discussed.

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Effects of Smartphone Addiction on Quality of Peer Relationships among Adolescents : The Mediating Role of Depression (청소년의 스마트폰 중독이 또래 관계의 질에 미치는 영향 : 우울의 매개 역할)

  • Yesolran Kim
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.24 no.2
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    • pp.161-166
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    • 2024
  • The current generation of adolescents stands out as the most digitally interconnected in the annals of history, navigating an era characterized by unprecedented levels of technological connectivity. This study explored the impact of smartphone addiction on the quality of peer relationships among adolescents, with a focus on the mediating role of depression. Analyzing data from 2,288 responses of 14-year-old adolescents extracted from the 2022 cross-sectional data of the Korean Children and Youth Panel Survey 2018, research questions were tested. The findings showed that smartphone addiction among adolescents exacerbates depression, consequently leading to a deterioration in the quality of peer relationships. The results contribute to expanding scholarly understanding of the intersection between digital technology and the mental and social well-being of adolescents. Furthermore, there is a call to action for parents, teachers, counselors, policy maker, and practitioner in education institutions to establish programs that monitor and intervene in cases of excessive smartphone use among adolescents.