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김재창 대한전자공학회 1974 전자공학회지 Vol.11 No.2
VNIC를 구성하는 방법으로서, 공통베이스접속회로의 베이스단자에 제어전압을 인가하는 방법을 제안하고 이것을 모델화한다. 단낙안정형은 제어압력을 입력전력에 종속하도록 함으로써 실현가능하며, 개방안정형은 입력전류에 종속인 출력전력에 비례하도록 함으로써 가능하다. 제안한 회로모델에 의하여, 회로를 구성하오 해석하여, 회로모델의 횡성기법의 타당성을 찾고, VNIC의 구성이론을 평이화하고자 한다. Networks showing often and short stable voltage inversion negative immittance converter(VNIC) characteristics are proposed by simplified equivalent model. Open stable VNIC characteristics can be obtained of controlling the base voltage of common base connection according to output voltage and short stable VNIC characteristics according to input dotage. An unbalanced circuit showing open and short stable characteristics is constructed and ana1ysis. The experimental results are coincident with the calculated within 10% error.
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김재창 국방부군사편찬연구소 2016 군사 Vol.- No.100
Traditionally, military strategists in Western society put focus on physical forces, whereas the strategists in Eastern world put focus mostly on the intent of the enemy commander. When the Chinese forces entered in the Korean War, in 1950, the battle field was characterized by the competition between the two strategic cultures, strategies based on forces and on intent. The experiences from the strategies and operational arts based on the two different cultures provide us with the most valuable sources for the preparation of the national defense. 전략사상차원에서 보면, 전투력중심 전략과 의도중심전략이 양대 산맥을 이루고 있다. 전자는 주로 서양에서 발전하였고, 후자는 전통적으로 동양에서 발전하였다. 625 한국전에 중공군이 참전하면서, 전장은 전투력중심 전략과 의도중심전략의 경쟁무대가 되었다. 우리는 이 두가지 전략을 동시에 체험하면서, 국난을 극복하였다. 사실 이 경험이 한반도에서 생존해야할 우리에게는 보물중의 보물이다.
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한국 다국적기업 해외파견관리자들의 현지적응 분석: 개인과 조직의 역할을 중심으로
김재창,권종욱 한국국제경영관리학회 2009 국제경영리뷰 Vol.13 No.2
본 연구는 해외파견관리자들의 현지적응에 도움을 주는 조직의 역할에 초점을 두었던 기존 연구를 확대하여 현지적응에 미치는 개인의 역할을 중심으로 분석한 연구이다. 특히 개인의 역할을 조직의 역할과 직접 비교하기 위하여 한국의 해외진출기업들의 해외파견관리자들을 대상으로 실증 분석하였다. 본 연구에서는 조직의 역할에 해당되는 경력관리변수와 개인의 역할에 해당되는 대처전략변수가 적응에 미치는 영향력을 중심으로 비교 분석하였다. 분석결과 조직의 역할 변수 보다 개인의 역할 변수가 오히려 일적응에 더 많은 영향력을 미치는 것으로 나타났다. 따라서 기존 연구에서 강조하고 있는 조직의 역할 뿐만 아니라 해외파견관리자들의 개인의 역할도 현지에 적응하는데 중요한 영향력을 줄 수 있다. 그러므로 개인의 노력과 조직의 지원이 적절히 조화를 이룰 때 적응에 미치는 영향은 효과적으로 증가할 것이다. 특히 개인의 역할중에서 현지적응에 긍정적인 영향은 미치는 문제중심대처전략을 적극 활용함으로서 적응의 효과를 높일 수 있을 것이다. This paper examines the impact of corporate career development activities and individual coping strategies on Korean expatriate managers's adjustment. This study extends previous research on expatriate adjustment by focusing both on corporate career development activities and individual coping strategies. Data from 54 Korean expatriate managers in U.S.A., Libya, Germany, Myanmar, Japan, Vietnam, Turkey, and U.A.E. were collected to examine the effects of corporate career development activities and individual coping strategies on adjustment. The results from this study shows that individual career counselling is positively related to work adjustment. However job posting and coaching/mentoring are not related significantly to work adjustment, interaction adjustment and general adjustment. In term of individual coping strategies, problem-focused coping is positively related to work adjustment, interaction adjustment and general adjustment. On the other hand, symptom-focused coping is negatively related to interaction adjustment and general adjustment. Individual coping strategies has greater impact on work adjustment than organizational career development activities. In addition, organizational career development activities and individual coping strategies have greater impact on work adjustment than interaction adjustment. In sum, the study indicates that individual role of expatriate managers should be considered as important factor as organizational role in facilitating expatriate adjustment.
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김재창 고려대학교一民국제관계연구원 2003 국제관계연구 Vol.8 No.1
The U.S.-ROK alliance was established during the Korean War and formalized by the U.S.-ROK Mutual Defense Treaty after the war. The alliance was the basic framework that guaranteed security on the Korean peninsula during the Cold War. To the U.S., South Korea was perceived as a critical forward base in Northeast Asia for containing the Soviet Union, while protecting free world. At the same time, to South Korea, the U.S. was the most reliable patron In the process of building a free democratic country, while protecting itself from North Korea's military threats. During the Cold War, the U.S. and South Korea have maintained the status quo as the best strategy on the Korean peninsula and that supported Interests of the two countries. In this period, North Korea ceaselessly carried out military provocations against the U.S-ROK alliance, violating the armistice agreements. Nevertheless, the alliance took patience instead of retaliation against North Korean armed provocations. The main reason that North Korea's provocations failed to trigger the second Korean War was because the U.S.-ROK alliance focused on maintaining status quo on the Korean peninsula. And the reason why the alliance opted for status quo was due to the Cold War structure. In the last part of 20^th century, the Cold War ended with the demise of the Soviet Union, and the U.S. remained a sole superpower. The new international order began to emerge, so does the fundamental change in strategic environment surrounding the Korean Peninsula. Under the new strategic setting, the U.S.-ROK alliance no more has to deal with North Korean issue as a part of hi-polar global system, but a matter of one rogue state in Northeast Asia The U.S. began to demand North Korea to take change out of the Cold War practices. Depending upon how North Korea responds to the demand, the height of tension on the Korean peninsula varies. Considering the rigidness of North Korean regime, it is highly probable that the U.S.-ROK alliance will face unpredictable and drastic change in North Korean threat in the coming years. Nevertheless, it is expected that the first part of 21^th century will witness the transition of the Korean peninsula from division to unification and unified Korea. The role of the U.S.-ROK alliance in the period of transition is far more important than that of the Cold War During the Cold War, since the alliance took just defensive strategy, each partner was required mostly to hold its position based on the initial plan. When the alliance is in the period of transition, it has to manage the change, which may occur on and around the Korean peninsula. Timely and more frequent coordination between two partners of the alliance, the U.S. and South Korea, is required. First, the U .S. and South Korea need to adjust their perception of threat from North Korea. Second, the two partners of the alliance need to share the same strategic goal so that they can create best synergy effect out of the alliance. Third, both need to share the same strategic concept so that they can divide roles for the effective implementation of the strategy. Under the new strategic environment, the U.S.-ROK alliance will manage the transition on the Korean peninsula and pave the road for broader role of regional stability in the longer period.
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PMN-PZT계 세라믹스의 압전특성에 미치는 MnO<sub>2</sub>의 영향
김재창,황동연,이미영,유신욱,김영민,어순철,김일호,Kim J.-C,Hwang D.-Y,Lee M.-Y,You S.-W,Kim Y.-M,Ur S.-C,Kim I.-H 한국재료학회 2004 한국재료학회지 Vol.14 No.5
Perovskite PMN-PZT-based ceramics were prepared and the$ MnO_2$ doping effects on their piezoelectric properties were investigated. Grain size decreased with increasing the $MnO_2$ content, and the pyrochlore phase was not identified in the sintered PMN-PZT ceramics with 0.01~1.0wt% $MnO_2$. Piezoelectric voltage and charge constants were reduced and mechanical quality factor increased with increasing the $MnO_2$ content. However, electromechanical coupling coefficient slightly decreased with increasing the MnO$_2$ content without regard to the grain size.
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