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실물 실험을 통한 복층유리 시스템의 열적 성능 및 에너지 저감 성능 고찰
이준혜,강재식 한국생활환경학회 2023 한국생활환경학회지 Vol.30 No.3
This study conducted experimental research on glass, a vulnerable component in building envelope systems, to evaluate its thermal performance. In this study, thermal and energy performance were measured using an on-site chamber. The evaluation is subject to the various types of low-e multi-layer glazing and double glazing with internal blind. Each glass specification testified under cooling and heating period to derive the performance indicators which include solar radiation transmittance, glass surface temperature, solar and energy reduction. The experiment of the low- e multi-layer glass combination showed that triple low-e double glazing is more effective in energy saving than single low-e double glazing during cooling and heating period. Triple low-e glazing consumes less energy for 33.7% during cooling period and 17.4% during heating period. Similarly, the experiments conducted on the internal blind group. The implementation of internal blind demonstrate superior performance than low-e double glazing system. Internal blind consumes less energy for 48.8% during cooling period and 16.1% during heating period.
이준혜,정원교,신영근,박상성,장동식 대한산업공학회 2011 대한산업공학회 춘계학술대회논문집 Vol.2011 No.5
Touchscreen panel market is on the rise again. Touchscreen panel technology has enabled finger-touch process of computer works from the method using keyboards and mouse in the prior period. It is expected to meet 30% increase in the industry as compared to 2011. However, touchscreen panel market is facing excessive investment and research. Furthermore, in Korea, present condition of pre-research analysis on domestic patent issues are lacked. In this paper, the issues related to touchscreen panel technology and its patent issues will be discussed to direct and assist the ways in which the future research can be conducted.
특허가 기업의 수익성에 영향을 미치는 시차에 대한 미국 소프트웨어 세분시장 수준 분석
이준혜,정원교,박상성,장동식 (사)디지털산업정보학회 2012 디지털산업정보학회논문지 Vol.8 No.2
There have been studies to evaluate valuation of firms by using patents in various ways. Also, the theory that value of patents helps enterprise's growth is valid in economics. However, when evaluating the value of the company, through the patent evaluation has not been used. Because of previous studies researched relation between patents and firms only at certain points. To solve this problem, this study intends to analyze lag between patent and profitability of the firms. In this study, we classified top 100 software firms in the United States through PBR, PER and value of intangible assets by using cluster analysis. And we applied Almon's distributed lag model to each cluster to find out lag between patent and profitability of the firms. As a result, in the cluster of more valuable companies, patents have an effect on profitability of the firms at regular lags. This study indicates that the patents are an important indicator to assess companies.