부산지역 무균성 뇌막염 원인 바이러스의 분리 및 동정 : 1998년을 중심으로

김영희,정영기,김기순,지영미,윤재득,김병준,구평태,민상기,정구영,김만수,조경순 동의대학교 기초과학연구소 2000 基礎科學硏究論文集 Vol.10 No.1

The incidence of aseptic meningitis infection is ensuing and threatening the health of children. Enteroviruses are the major agents of aseptic meningitis and identification of virus has been a clue to diagnosis and epidemiology. The outbreak of aseptic meningitis occurred in Pusan, 1998. Patients were concentrated from April through November. Children were more susceptible than adults. Among 306 cases of specimens from stool, throat swab tested, only 7.2% were positive on virus isolation, 12 cases from stool and 10 from throat, respectively. All isolated 7 serotypes of viruses represented cytopathic effect on cultured cells. Three types of echovirus 6, 25, 30 and coxsackievirus B2, B3, B4, B6 were identified by neutralizing anti body test. Isolated coxsackievirus and echovirus were observed by an electron microscope with negative staining.

브랜드자산에 관한 연구실태와 과제

임기평,김우성 한밭대학교 2004 한밭대학교 논문집 Vol.21 No.-

The concept of Brand Equity which was created in the latter half of the 1980's has been introduced by many researchers. In case of study about a new concept including the concept of Brand Equity, the research should be considered the matter from all angle instead of accept the concept unqualified. Therefore, the purpose of this paper will be focused to define the concept of Brand Equity, origin of appearance the concept, and then it show old and new methodologies to measure Brand Equity. But also it is suppose to propose a question after debating on what merits and demerits for those methodologies. Finally, this study is up to proposal for question which will be required further examination.

n-CdS_(0.46)Se_(0.54)/p-Cu_92-x)S_(0.46)Se_(0.54) 이종접합 태양전지의 제작과 그 특성에 관한 연구

유상하,최승평,이상열,홍광준,서상석,김혜숙,전승룡,윤은희,문종대,신영진,정태수,신현길,김택성,유기수 全北大學校 基礎科學硏究所 1994 基礎科學 Vol.16 No.-

승화방법에 의해 CdS_0.46Se_0.54 단결정을 성장하여 결정구조를 조사하고, Van der Pauw 방법으로 Hall effect를 측정하여 carrier density의 온도 의존성과 mobility의 온도 의존성을 조사하였다. 성장된 CdS_0.46Se_0.54 단결정을 치환반응하여 n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 이종접합 태양전지를 제작하였다. Spectral response, 전류-전압특성 및 전력변환 효율을 조사하여 그 결과로부터 개방전압은 0.48V, 단락 전류 밀도는 21mA/㎠, fill factor와 전력변환효율은 각각 0.75와 9.5%를 얻었다. CdS_0.46Se_0.54 single crystal was grown by a sublimation method. The crystal structure and the temperature dependence of carrier density and mobility of CdS_0.46Se_0.54 single crystal were studied. Heterojunction solar cells on n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 were fabricated by the substitution reaction. The spectral response, the J-U characteristics and the conversion efficiency of the n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 heterojunction solar cells were studied. The open-cricuit voltage, short-circuit density, fill factor and conversion efficiency of n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 heterojunction solar cells under 80mW/㎠ illumination were found to be 0.48V, 21mA/㎠, 0.75 and 9.5%, respectively.

양이장단자극을 이용한 각성유지 및 수면유도

정환목,배기성,김형식,우창진,최평,이만기 경북대학교 센서기술연구소 2002 센서技術學術大會論文集 Vol.13 No.1

Corporate Debt Offerings : An Empirical Investigation

Kim, Pyung-Kee 한국생산성학회 1995 THE JOURNAL OF PRODUCTIVITY Vol.1 No.1

In a competitive capital market, good-quality firms try to reveal their true quality and investors try to identify them correctly. These efforts increase the productivity of the capital market. We think that debt financing provides an effective way of conveying inside information to the market, as debt financing involves both credit risk and interest rate risk and subjects issuing firms to the possibility of financial distress. The purpose of this study is to answer whether the choice of debt can be used as a reliable signaling and/or disciplining device. Using U.S. data, we examine the valuation effects of various debt offerings grouped by maturity and lender. We find evidence that short-term debt issuance signals favorable inside information on the issuing firm's future cash flows. In addition, some support can be found for the monitoring role of short-term debt. However, our analysis does not support the contention that inside debt reduces the degree of asymmetric information, because the choice of inside vs. outside debt appears to be affected by firm size. Our study possesses several productivity improvement implications for the Korean debt market. First, the information production roles of debt evidenced in this paper recommend that the debt market to have more diverse types of debt instruments. Next, we address how the availability of interest rate swapping benefits good small firms faced with high interest rate volatility. Finally, we make a suggestion on how banks and insurance companies can effectively position their lending business in the inside debt market.

Development of Application Technique of Aluminum Sandwich Sheets for Automotive Hood

Kim, Kee-Joo,Rhee, Meung-Ho,Choi, Byung-Ik,Kim, Cheol-Woong,Sung, Chang-Won,Han, Chang-Pyung,Kang, Ki-Weon,Won, Si-Tae 한국정밀공학회 2009 International Journal of Precision Engineering and Vol.10 No.4

Objective of this study was to develop basic techniques in order to apply aluminum sandwich sheets for an automotive hood part. The aluminum sandwich sheet is the material fabricated by adhering two aluminum skins to one polypropylene core. When it has the same bending stiffness as a steel sheet, it is 65% lighter than the steel sheet and 30% lighter than an aluminum alloy sheet. Therefore, it is notified exclusively as good substitutive materials for a steel body to improve the fuel efficiency. Through aluminum sandwich sheet, however, it has relatively lower formability than that of the steel sheet for automotive application. In this study, we developed application techniques of the aluminum sandwich sheet for automotive hood. The various formability evaluations were carried out in order to secure the fundamental data for the measurement of sheet metal forming and the establishment of optimum application conditions of the sandwich sheet. From these results, it was found that the sandwich sheet could reduce the weight and maintain the flexural rigidity simultaneously comparing to the steel sheet.

자본구조 결정에 관한 연구

김병기(Kim, Pyung-Kee) 대한경영학회 2011 大韓經營學會誌 Vol.24 No.6

法人源泉所得의 二重課稅 調整方法과 效果에 관한 硏究

金基平(Kim Kee Pyung) 조선대학교 지식경영연구원 1987 기업과 혁신연구 Vol.10 No.1

불확실성이 투자에 미치는 영향

김병기 ( Pyung Kee Kim ) 한국생산성학회 2005 生産性論集 Vol.19 No.2

상장기업의 자본구조 변화에 관한 연구

김병기(Pyung-Kee Kim),이종구(Jong-Gu Lee) 韓國經營史學會 2015 經營史學 Vol.75 No.-

본 연구는 1982년부터 2014년까지 33년간 우리나라 상장기업의 자본구조 변화를 전체적으로 조명하고 변화의 원인을 규명하고자 하였다. 표본기간은 한국경제의 고도성장기 및 자본시장의 획기적 발전기를 포함할 뿐만 아니라 1997년 말 외환위기를 비롯해 신용카드대란, 글로벌 신용위기, 유럽재정위기 등의 위기 기간을 포함하고 있어 부채비율의 변동이 심했다. 경제 및 증시 지표와 기업의 주요 재무비율을 연결시켜 연도별로 분석한 결과 외환위기는 자본구조에 구조적인 변화를 가져온 것으로 나타났다. 장부가 부채비율, 시장가 부채비율, 장부가 금융부채비율, 시장가 금융부채비율 모두 외환위기 이후에 지속적으로 감소해 낮은 수준을 유지하고 있다. 또한 위기 전후의 차이검증 결과를 보면 저금리, 안정성 비율 개선, 직접금융시장 규모확대 등에도 불구하고 저성장, 위험관리 강화, 수익성 악화 등으로 인해 낮은 부채비율을 유지하려는 기업의 의도가 나타나고 있다. 본 연구는 자본구조 결정요인모형, 상충이론 및 순위이론의 비교분석모형, 그리고 부분조정모형을 통해 양대 이론이 우리나라 상장기업의 자본구조를 얼마나 잘 설명하는가를 실증적으로 분석하였다. 주요 실증분석결과를 요약하면 다음과 같다. 첫째, 전체기간을 보면 유형성(+), 기업규모(+), 수익성(-) 등이 부채비율에 유의한 영향을 미치고 있었다. 그러나 유형성과 수익성의 유의한 영향은 주로 위기이후에 나타나고 있었다. 둘째, 상호작용모형을 통해 외환위기 이전 및 이후를 비교한 결과 부채비율의 주요 결정요인의 계수값이 서로 유의한 차이를 보이고 있어 외환위기가 자본구조에 구조적 변화를 가져온 것을 알 수 있다. 셋째, 상충이론과 순위이론의 현실적용성을 분석한 결과 상충이 론이 우리나라 기업의 자본구조를 더 잘 설명하는 것으로 나타났다. 넷째, 자본구조의 조정속도는 전체기간, 위기 이전 및 이후기간에 있어 장부가/시장가 부채비율 모두에서 무척 빠른 것으로 나타났다. 이는 국내 기업이 목표부채비율을 설정하고 이탈 시 복귀 노력을 하는 것으로 해석할 수 있다. 본 연구는 지난 33년간 시대별 상장기업의 자본구조 변화과정을 종합적, 체계적으로 규명한 만큼 향후 상장기업의 자본구조변화를 예측, 분석하는 후행 연구자들과 실무자들에게 필요한 정보를 제공할 수 있다는 측면에서 의의와 시사점을 함께 찾을 수 있을 것이다. The purpose of this paper to shed some light on the change of Korean listed firms`` capital structure in the period of 1982 to 2014 and to find out whether there are significant structural changes in leverage after the Korean financial crisis in 1997. In addition to structural changes, we empirically investigate the determinants of leverage, the effects of both financial deficits and target leverage deviations on leverage changes, and the adjustment speeds of capital structure. The 33 years of the sample period include the periods of both high and low economic growth, rapid capital market``s expansion, and Korean and global financial crises in 1997 and 2008 respectively. On the basis of the sample of Korean listed firms excluding financial and regulated firms, we analyze 9,886 firm-year observations and document the following empirical evidence, First, the leverage ratios in the post-crisis period are substantially lower than those in the pre-crisis and the effects of important determinants of capital structure change significantly after the crisis. Second, firms`` leverage is positively associated with tangibility, firm size, depreciation, advertising expenses, and large shareholders`` ownership while negatively associated with profitability and foreign ownership. Third, firms quickly adjust their leverage toward the target ratio and issue debt when external financing is needed. Such evidence coincides with the expectations of both the trade-off theory and the pecking-order theory. Fourth, the evidence of fast adjustment speeds of capital structure both in the pre- and post-crisis periods supports the trade-off theory. Finally, robustness tests show that the above empirical results remain almost the same when leverage is measured by financial debt in lieu of total debt.