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이규태,오창석 ( Kyu Tae Lee,Chang Suk Oh ) 충북대학교 산업과학기술연구소 1996 산업과학기술연구 논문집 Vol.10 No.1
Abstract_Roman In this paper, the performance of the BAM(Bidirectional Associative Memory) is analyzed, BAM consists of two layers of neurons which are connected by directional weighted path. Pattern association are stored by weight matrix are derived fr
이규태,김영균,고도형 기술경영경제학회 2016 ASIAN JOURNAL OF TECHNOLOGY INNOVATION Vol.24 No.3
This study investigates the mediating role of entrepreneurial alertness of a top managementteam (TMT) between organizational learning and corporate entrepreneurship (CE). Weconducted two studies. In Study 1, based on TMT members’ responses from a group ofKorean companies, we examined a factor structure of TMTs’ entrepreneurial alertness andits influence on CE. We identified that TMTs’ entrepreneurial alertness is a second-orderconstruct, constituting scanning and searching, association and connection, and evaluationand judgment, which positively influence CE. In Study 2, based on TMT members’responses from another group of Korean companies, we confirmed a second-order structureof TMTs’ entrepreneurial alertness. Furthermore, while breadth and depth of learningpositively influenced TMTs’ entrepreneurial alertness, speed of learning had a negativeeffect. In addition, TMTs’ entrepreneurial alertness partially mediated the relationshipbetween breadth of learning and CE, and fully mediated the relationship between depth oflearning and CE. This study contributes to extending the concept of entrepreneurial alertnessto a TMT context and identifying TMTs’ entrepreneurial alertness as an organizationalcapability. It helps understand how the three attributes of organizational learning canheterogeneously contribute to TMTs’ entrepreneurial alertness and CE in organizations.
대기 복사 모형에 의한 남극 세종기지에서의 복사학적 특징: 지표면에서 UV-A와 Erythemal UV-B 자외선 양 변화
이규태,이방용,원영인,지준범,이원학,김윤정 한국해양과학기술원 2003 Ocean and Polar Research Vol.25 No.1
A solar radiation model was used to investigate the UV radiation at the surface of King Sejong Station in West Antarctica. The results calculated by this model were compared with the values measured by UV-Biometer and UV-A meter during 1999-2000. In this study, the parameterization of solar radiative transfer process was based on Chou and Lee(1996). The total ozone amounts measured by Brewer Ozone Spectrophotometer and the aerosol amounts by Nakajima et al.(1996) was used as the input data of the solar radiative transfer model. And the surface albedo is assumed to be 0.20 in summer and 0.85 in winter. The sensitivity test of solar radiative transfer model was done with the variation of total ozone, aerosol amount, and surface albedo. When the cosine of solar zenith angle is 0.3, Erythemal UV-B radiation decreased 73% with the 200% increase of total ozone from 100 DU to 300 DU, but the decrease of UV-A radiation is about 1%. Aslo, for the same solar zenith angle, UV-A radiation was decreased 31.0% with the variation of aerosol optical thickness from 0.0 to 0.3 and Erythemal UV-B radiation was decreased only 6.1%. The increase of Erythemal UV-B radiation with the variation of surface albedo was twice that of UV-A increase. The surface Erythemal UV-B and UV-A radiation calculated by solar raditive transfer model were compared with the measured values for the relatively clear day at King Sejong Station in West Antarctica. The model calculated Erythemal UV-B radiation at the surface coincide well with the measured values except for cloudy days. But the difference between the model calculated UV-A radiation and the measured value at the surface was large because of cloud scattering effect. So, the cloud property data is needed to calculate the UV radiation more exactly at King Sejong Station in West Antarctica.
남극 세종기지에서 복사 속 및 복사 가열률의 연직 분포
이규태,이방용,지준범,이원학,이민경 한국해양과학기술원 2005 Ocean and Polar Research Vol.27 No.1
The vertical profiles of radiative flux and heating rate at King Sejong Station in West Antarctica were calculated with radiative transfer model by Chou and Suarez (1999) and Chou et al. (2001). To run this model, the profiles of temperature, mixing ratios of water vapor and ozone at King Sejong Station were derived from ECMWF Reanalysis data. The surface temperature and albedo were also derived from NCEP/ NCAR Reanalysis and CERES data. The radiative flux strongly depends on the cloud optical path length that was calculated using the measured UV-A data and model by Chou and Lee(1996). During the period of 2000~2001 (12 and 18 UTC), the correlation coefficient between calculated and measured downward solar fluxes at surface was 0.90 and the coefficient for downward longwave flux was 0.61. The calculated net heating rates of surface layer decreased during the same period, the trend of which was in accordance with the decrease of measured temperature.