향부자팔물탕(香附子八物湯)이 구속(拘束) Stress 흰쥐의 체중(體重) 및 혈장(血漿) Catecholamines 함량(含量)에 미치는 영향(影響)

김병우,김성욱,Kim, Byung-Woo,Kim, Sung-Ook 대한한방내과학회 2001 大韓韓方內科學會誌 Vol.22 No.4

In order to study the anti-stress effect of hyangbujapalmultang, several measures of stress, including body weight changes, organ weight changes and catecholamine changes. The following result have been obtained: 1. The weight loss of contol group was $28.5{\pm}1.8g$, that of sample group was $20.3{\pm}1.6g$. This differance was statistcally significant. 2.The organ weight(Liver,Spleen,Kidney,Adrenal gland) was the only significant change in the spleen, in sample group comparing to control group. 3. The norepinephrine contents of control group was $695.5{\pm}22.7pg/ml$, that of sample group was $607.4{\pm}21.7pg/ml$. This shows significant difference in sample group comparing to contol group. 4. The epinephrine contents of control group was $212.8{\pm}9.8pg/ml$, that of sample group was $182.6{\pm}8.4pg/ml$. This shows significant differance in sample group comparing to control group. 5. The dopamine contents of control group was $504.5{\pm}31.3$, that of sample group was $463.4{\pm}27.8pg/ml$. This shows the value decreased, but none of it is significant. Based on avove results, it may be conculed that hyangbujapalmultang has anti-stress effects.

Innovation and FDI: Applying Random Parameters Methods to KIS Data

김병우,Kim, Byung-Woo Korea Technology Innovation Society 2010 기술혁신학회지 Vol.13 No.3

"시장규율로서의 FDI" 가설에 따르면 직접투자 자금유입은 국내기업의 혁신활동에 영향을 미치는 시장구조에 변화를 주는 메커니즘으로 작용한다. STEPI의 2008 KIS 데이터에 대한 프로빗 추정결과는 Bertschek(1995)이 분석한 독일기업의 경우와 달리, 한국기업의 제품혁신을 설명하는데 FDI가 설명력이 없는 것으로 나타났다. 이의 근거로 본 연구는 한국 산업의 시장구조가 독일의 경우보다 독점적인데서 기인한다는 추론을 제시하였다. 2005, 2008년 데이터로 구성된 패널데이터 분석의 경우, GLS와 OLS의 행렬가중평균을 추정하는 임의 파라미터 추정법을 적용하였다. 그 결과는 단순 패널프로빗추정 결과와 상당한 차이가 나, 기업간 파라미터에 많은 파라미터 추정치 변화가 있음을 보여준다. 그러나, 패널추정치와 횡단면 추정치간 타 계수의 부호는 달라도 FDI에 대한 결과는 동일한 것으로 나타난다. According to the "FDI-as-market-discipline" hypothesis, inward FDI acts as a mechanism of change in market structure affecting innovative activities of domestic firms. We used panel KIS data for testing this hypothesis. Binary probit estimation shows that, in contrast to the German case of Bertschek (1995), FDI is insignificant in Korean case for explaining product innovation. 1his result maybe comes from the fact that the industries in Korea are more monopolistic or oligopolistic than those of Germany. Using panel data, we tried random parameter estimation using matrix weighted average of GLS and OLS. The result shows different estimates from cross-section outcome and panel estimation with parameter homogeneity, so we can infer large parameter heterogeneity across firms. But, interpretation for FDI variable is similar across panel and cross-section estimation.

한의과대학의 약침학 교육현황 조사 연구

김병우,임청산,최가영,강대인,이희춘,김현도,권기록,Kim, Byung-Woo,Lim, Chung-San,Choi, Ga-Young,Kang, Dae-In,Lee, Hee-Choon,Kim, Hyun-Do,Kwon, Ki-Rok 대한약침학회 2010 Journal of pharmacopuncture Vol.13 No.3

Objectives: This investigation was conducted to evaluate current education status of pharmacopuncture in Korean traditional medicine schools and suggest improvement in the structure of pharmacopuncture education. Methods: Among the eleven Korean traditional medicine schools in the country, six schools participated in the survey. 252 students in fifth and sixth year whom have finished pharmacopuncture studies completed were given questionnaire developed for the purpose and survey results were analyzed. Results : 1. For the question pertaining to the text used for the pharmacopuncture lecture, a significant difference was witnessed suggesting that few schools were not utilizing common textbooks. 2. For the item pertaining to the lecture progression, each school showed significant difference and student satisfaction rate differed vastly between schools. 3. Lecture hours and lecture materials were also significantly different between schools and overall satisfaction rate was low. 4. All of students participated in the survey had high expectation in the clinical applications of pharmacopuncture treatment. Conclusions: Above findings indicate that students at Korean traditional medicine schools throughout the nation have high expectation for pharmacopuncture, but lack of standardized education system and materials and qualified instructors calls for immediate modification in the education of pharmacopuncture studies.

RFID를 이용한 U-Museum 시스템 설계 및 구현

김병우,변영철,이동철,Kim, Byung-Woo,Byun, Yung-Cheol,Lee, Dong-Choel 한국정보통신학회 2007 한국정보통신학회논문지 Vol.11 No.3

끊임없이 변화하는 오늘날의 상황에 빗대어 볼 때 전시물의 관리방법은 혁신적인 변화가 이루어 지지 않았다. 이런 문제점을 해결하기 위하여 RFID 시스템을 이용하여 관리자가 실시간으로 전시물을 관리하는데 도움을 줄 수 있는 "RFID를 활용한 U-Museum 시스템"을 설계하고 프로토타입을 개발하였다. 이 시스템은 각 전시물에 900MHz 대역의 수동형 태그를 부착하고 태그를 인식하는 이동형 리더기를 이용하여 관리자는 전시물의 모든 정보를 실시간으로 확인 할 수 있게 함으로써 관리자가 전시물을 관리하는데 효율성을 높이는 것이 목적이다. Despite continuous changes these days, exhibit management methods have not changed that much. To solve th problem, some systems like bar code, color code, IrDA, etc. are being used, but still many problems remain. For the problem-solving, "Exhibt Management System with RFID" is designed and its prototype is developed, which can reduce resources and efforts to manage exhibits through that an operator confirms exhibit information and inputs any damage on the exhibit on the site by using RFID system. The system purposes to improve efficiency of exhibit management by allowing an operator to check all information of exhibitions in real time using a portable reader that recognizes tags of 900MHz band manually attached to each exhibit.

단계양수시험으로부터 우물수두손실 항을 이용한 단열의 고.저 투수성 평가

김병우,김형수,김건영,고용권,Kim, Byung-Woo,Kim, Hyoung-Soo,Kim, Geon-Young,Koh, Yong-Kwon 한국방사성폐기물학회 2012 방사성폐기물학회지 Vol.10 No.1

Rorabaugh(1953)에 의해 재정리된 단계양수시험 해석해 $s_w=BQ+CQ^p$는 단열암반대수층에서 비선형으로 증가하는 수위강하에 매우 적합하며, 현장에서 관측된 수위강하 값과 추정된 수위강하 사이의 제곱근 평균제곱오차(RMSE) 값이 매우 낮음을 보여주었다. 우물수두손실($CQ^p$)의 $C$ 값은 $3.689{\times}10^{-19}{\sim}5.825{\times}10^{-7}$, $P$ 값은 3.459~8.290의 범위로 산정되었으며, 지표로부터 하부심도로 내려 갈수록 양수율 증가에 따른 수위강하는 매우 크게 나타났다. 단열암반대수층에서의 우물수두손실은 다공질매질에서와 달리 단열특성(단열의 틈, 간격, 상호 연결성)에 의한 영향으로 나타나므로, 우물수두손실의 $C$ 와 $P$ 값은 단열암 반대수층의 난류구간과 고 저 투수성 단열암반의 특성을 해석하는데 매우 중요하다. 그 결과, 우물수두손실 항의 $C$ 와 $P$ 값에 대한 회귀분석 결과로부터 암반대수층의 난류구간과 수리특성의 관계가 파악되었으며, $C$ 와 $P$ 값의 관계가 단열암반대수층의 수리특성 해석에 있어 매우 유용함을 확인할 수 있었다. The equation of the step-drawdown test "$s_w=BQ+CQ^p$" written by Rorabaugh (1953) is suitable for drawdown increased non-linearly in the fractured rocks. It was found that value of root mean square error (RMSE) between observed and calculated drawdowns was very low. The calculated $C$ (well head loss coefficient) and $P$ (well head loss exponent) value of well head losses ($CQ^p$) ranged $3.689{\times}10^{-19}{\sim}5.825{\times}10^{-7}$ and 3.459~8.290, respectively. It appeared that the deeper depth in pumping well the larger drawdowns due to pumping rate increase. The well head loss in the fractured rocks, unlike that in porous media, is affected by properties of fractures (fractures of aperture, spacing, and connection) around pumping well. The $C$ and $P$ value in the well head loss is very important to interpret turbulence interval and properties of high or low permeability of fractured rock. As a result, regression analysis of $C$ and $P$ value in the well head losses identified the relationship of turbulence interval and hydraulic properties. The relationship between $C$ and $P$ value turned out very useful to interpret hydraulic properties of the fractured rocks.

강우의 공간특성이 지하수위 변동에 미치는 영향

김병우(Byung-Woo Kim),정영훈(Younghun Jung),김병군(Byung-Goon Kim),허영택(Young-Teck Hur),김홍석(Hong-Suck Kim),이영주(Young-Joo Lee),김동섭(Dong-Sup Kim) 대한지질학회 2018 대한지질학회 학술대회 Vol.2018 No.10

금융규제와 R&D 투자

김병우(Byung Woo Kim) 한국기술혁신학회 2009 기술혁신학회지 Vol.12 No.3

본 연구에서는 기술표준원이 (주)코리아데이터네트워크에 의뢰하여 작성된 설문조사결과를 활용하여 기업의 표준화활동 결정요인을 분석하였다. 표준화활동을 유형(혹은 범주)에 따라 기업의 전사적 표준경영, 인증획득, 국내표준활용, 국제표준활용 등으로 구분하였고, 그 결정요인으로 기술혁신활동(R&D와 특허출원), 기업규모, 수출, 네트워크(산업특성), 기업조직특성 등을 고려하였다. 분석된 표본은 제조업에 속한 636개 기업으로 정성적 분석방법인 로지스틱 회귀모형(logistic regression)을 사용하였다. 분석결과, 첫째 기술혁신활동 변수 중 R&D집약도는 국제표준활용을 제외하고 표준화활동에 영향을 미치지 않는 것으로 나타났다. 둘째, 특허출원은 전사적 차원에서의 표준경영과 인증획득활동에 대해 정(+)의 유의한 효과를 보여 주었다. 셋째, 상대적으로 소기업과 대기업보다는 중간규모의 기업에서 전사적 차원에서의 표준경영과 인증획득활동이 활발하다는 역U자 가설이 성립하는 것으로 분석되었다. 넷째, 표준화에 대한 경영진의 관심은 모든 표준화활동의 유형에 대해서 중요한 결정요인으로 나타났다. In this study, we made a critical review on the regulatory policies in financial sector of Korea, analysed their effects on the firm's innovation, and suggested some policy implications. Many innovation researchers and policy makers expected that such a liberal system of regulation would lead Korea's national innovation system to the quantum leap. Our analyses of financial regulations show, however, that changes of regulatory systems (deregulation for interest rate) in the last decade did not always promoted the firm's innovation. The firms now encounter Basel II, and since it could cause bipolarization between R&D performing firms, it is necessary to add complementary policy such as collateralization or netting. Finally, simple empirical anlysis shows that the trend of universal banking may affect R&D investment positively.

한국에서의 천연자원과 지속가능성장

김병우 ( Byung Woo Kim ) 대한설비관리학회 2015 대한설비관리학회지 Vol.20 No.3

Through time-series plots, we can see relatively stable trend of energy factor share and the decreasing trend of relative energy prices (to wages) in Korea. We can compromise these empirical facts with the following explanation: if elasticity of substitution between capital and energy is smaller than one (<1) in Korea, a change (decrease) in energy price can prevent income share of resources from rising in the process of economic growth. This is consistent with theoretical and empirical results that substitution between energy and capital is so difficult. From simple empirical analysis and limited information, we can carefully infer that, in the past in Korea, resource-specific innovation was performed widely. Finally, if we are to reduce the magnitude of growth drag, we should decrease energy factor share. This can be accomplished by energy-augmenting technical progress in the case of elasticity of substitution less than 1 as in Korea.

생체적합한 유연 압전 에너지 하베스터를 이용한 체내 무선통신 기술 개발

김병우(Byung-Woo Kim),김동현(Dong-Hyun Kim),이건재(Keon-Jae Lee) 대한전자공학회 2021 대한전자공학회 학술대회 Vol.2021 No.6

기술혁신이 생산성과 경제성장에 미치는 영향

김병우(Kim Byung-Woo) 한국기술혁신학회 2008 기술혁신학회지 Vol.11 No.1

기술혁신이 경제성장에 미치는 영향은 어떠한가? 이는 전통적으로 지식스톡을 반영하는 성장회계법에 의해 분석되었다. R&D에 대한 수익률 추정은 특허와 같은 R&D 산출이 지식축적에서 기인하는 것으로 파악한다. Griliches(1973)는 이를 위해 회귀분석 방법을 사용하였다. 본 연구에서는 기존 성장회계법에서의 추정방법과 달리 R&D 효율성을 나타내는 파라미터가 시간이 지남에 따라 변동(time-varying)하는 것을 허용하는 상태공간 모형(state-space model)을 통해 한국경제의 R&D효율성(fertility)을 추정하였다. R&D스톡의 생산성에 대한 탄력성은 0.120~0.135 정도로 추정되었다. What has been the contribution of industrial innovation to economic growth? Typically, the issue has been approached with growth-accounting methods augmented to include a "stock of knowledge". An independent estimate of the rate of return to R&D is found in order to impute patents granted to the accumulation of knowledge. Griliches(1973) then uses a regression approach to assess the effect of an R&D variable on the computed TFP growth rate. The regression coefficient on the R&D variable would provide an estimate of the social rate of return to R&D. The related studies tend to show high social rates of return to R&D, typically in a range of 20 to 40 % per year. We need to provide multiple equation dynamic system for productivity and innovation in Korean economy in state space form. A wide range of time series models, including the classical linear regression model, can be written and estimated as special cases of a state space specification. State space models have been applied in the econometrics literature to model unobserved variables like productivity. Estimation produces the following results. Considering the goodness of fit, we can see that the evidence is strongly in favor of the range 0.120~0.135 for the elasticity of TFP to R&D stock in the period between 1970's and the early 2000's.