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구소영(Koo So-young),김해동(Kim Hae-Dong) 한국초등영어교육학회 2007 초등영어교육 Vol.13 No.3
This study is aimed at reporting the results of item analysis on a English test for Korean primary school students thus contributing to improvement of the English tests for primary school students. To achieve this goal, LATT Junior Test has been examined to see 1) if it is to evaluate students" English proficiency based on the Bachman and Palmer"s (1996) language component constructs, and 2) if items are appropriate as standard testing items in terms of item difficulty, discrimination, and reliability based on Item Response Theory (IRT), which would help to appreciate English proficiency of current primary school students. The result of analysis is as follows. First, based on the Bachman and Palmer"s language component constructs, the test has turned out it has more questions to test pragmatic knowledge than ones to test organizational knowledge. Second, the test has acquired a good mark in reliability. Cronbach a reached .812, which means the LAlT Junior Test is a reliable test after all. For further analysis, it was attempted to compare level descriptions of the test with those of Common European Framework (CEF) and ACTFL. A1 and A2 in CEF or Novice in ACTFL can be regarded as the standard level of primary school students in Korea. It is recommended that the main objective of an English proficiency test should reflect a diagnostic purpose. In addition, assessing speaking and writing skills should be included in an English proficiency test.
열교를 고려한 커튼월 벽체부의 열성능 평가에 관한 연구
구소영(Koo So-Young),구혜연(Ku Hae-Yeun),여명석(Yeo Myoung-Souk),김광우(Kim Kwang-Woo) 한국건축친환경설비학회 2008 한국건축친환경설비학회 논문집 Vol.2 No.4
Building envelope is important system affecting energy consumption of the building. The thermal performance of a wall is represented by simple R-value. The modified zone method is a simple method for estimating the clear wall R-value of steel stud walls with insulated cavities. However, this analysis does not consider the thermal bridges impact of connection with other building components. The purpose of this study is to investigate the thermal impact of thermal bridges on the thermal performance of curtain walls. Simulation was performed by Physibel Trisco based on 3-D finite difference computer modeling. The R-value of Stone and GFRC(Glass Fiber Reinforced Concrete) panel system were calculated considering connection components which cause thermal bridges in curtain walls. The result of simulation show that steel components of curtain wall have important impacts on the overall wall thermal performance and thermal bridging impact of the connection with other building component is important especially in the case that steel component such as fastener has important impacts on the thermal performance of the wall.
구소영(Koo So-Young),구혜연(Ku Hae-Yeon),여명석(Yeo Myoung-Souk),김광우(Kim Kwang-Woo) 대한건축학회 2008 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.28 No.1(계획계)
Curtain walls are popular for many high-rise buildings. They are consist of windows and opaque walls formed from steel or aluminum elements and finishing panels using aluminum or stone, etc. Recently, new materials such as GFRC(Glass Fiber Reinforced Concrete) have been adopted for finishing panel. The objective of this study is to evaluate the thermal performance of different curtain wall systems. Steady state simulation was performed for different curtain walls such as GFRC, stone and aluminum curtain walls. U-value and temperature factor were calculated and the results of simulation showed that there is a considerable differences in thermal performance between curtain wall systems.
국내외 창호 인증제도에서의 창호 열성능 평가 방법 비교 분석
구소영(Koo, So Young) 대한건축학회 2015 대한건축학회논문집 Vol.31 No.9
The purpose of this study was to analyze the differences of window thermal performance calculation method between window certification systems. The U-value and g-value calculation method in ISO 15099 was reviewed and analyzed. The window certification systems in different countries were compared. The results show that there are differences in the standard window size, calculation algorithm, rating indicators, boundary conditions and rating scale. A simulation was performed to evaluate the thermal performance of windows using different calculation methods.
베네시안 블라인드의 열 성능 평가를 위한 해석 도구의 구축에 관한 연구
구소영(Koo So-Young),박영준(Park Young-Jun),구혜연(Ku Hae-Yeon),여명석(Yeo Myung-Seok),김광우(Kim Kwang-Woo) 한국건축친환경설비학회 2007 한국건축친환경설비학회 학술발표대회 논문집 Vol.- No.-
There is a need to develop a simulation tool that allow solar angular dependent optical properties of blinds to be calculated. The purpose of this paper is to implement the computer module to calculate the effects of solar transmission through the slat-type blinds. The analytical model to calculate the solar transmittance of blinds has been written and implemented as a computer module. The calculation results were compared with those given by EnergyPlus.
구소영(Koo, So-Young),여명석(Yeo, Myoung-Souk),성윤복(Seong, Yoon-Bok),김광우(Kim, Kwang-Woo) 한국태양에너지학회 2013 한국태양에너지학회 논문집 Vol.33 No.2
Blinds area common type of shading device and are increasingly operated automatically to overcome the limitations of manual operation. Automated blinds need to be controlled to maximize benefits of daylight in the point of occupant comfort and energy consumption. However, the previous control methods could cause occupant"s distractions by the undesirable control time interval and amount of blind movement. A few researches suggested the control concept for minimizing occupant"s distractions by automatic blind control, but they did not provide optimal control algorithm to be useful in practice. In this paper, we propose an optimal control algorithm for automated blinds that can maximize not only visual comfort but also sunlight penetration into buildings based on occupants’ preferences on blind movement and sunlight. The proposed control algorithm can prevent solar glare on workplane and minimize occupant"s distractions to maximize occupants’ visual comfort.
구소영(Koo, So Young),송승영(Song, Seung Yeong) 대한건축학회 2016 대한건축학회논문집 Vol.32 No.10
Thermal bridge in windows can cause multiple problems, including heat loss and mold/condensation problems. The energy performance of window has been dramatically improved in recent years, however, mold/condensation are still challenging problems. This paper analyzed the relationship of thermal performance between the whole window and thermal bridging area. Also, it identified the factors which affect the local heat flow of window thermal bridging. The results show that the thermal performance of window thermal bridging area has no direct relationship with window U-value. The window type and the position of Low-e coating were identified as key factors affecting the thermal performance of window thermal bridging area.
작업면 현휘 방지와 주광 및 일사 유입 최대화를 위한 제어 종료 영역에서의 최적 블라인드 제어
성윤복,여명석,구소영,김광우,Seong, Yoon-Bok,Yeo, Myoung-Souk,Koo, So-Young,Kim, Kwang-Woo 한국주거학회 2012 한국주거학회 논문집 Vol.23 No.1
The objective of this study is to develop the blind control strategy and method which reduce negative effect of incoming daylight on visual comfort of occupants, minimize psychological anxieties caused by frequent motions of a blind, and maximize positive effect of incoming daylight and solar irradiation by opening/closing of a blind. As previous researches on blind controls have limited outdoor environmental conditions to those in specific regions, orientations and dates, these resulted in problems at various conditions for general-purpose application. Major problem is that the time interval and amount of blind movement do not meet the control objective at the end of control zone and discontinuous curve. To overcome these limitations revealed in the previous researches, following tasks were performed in this study. 1) To establish the control objective to accomplish the goal of this study. 2) To develop the control methods and algorithms which prevent glare on the work-plane at any time and which control the time interval and amount of blind movement to follow the control objective at various profile angle curves. 3) To validate the general-purpose applicability and performance of the developed control methods and algorithms by simulation and its data analysis at various conditions. It was found that the proposed methods and algorithms can prevent the direct glare on the work-plane at all the time and also increase the incoming daylight and solar irradiation.