• 전기학회논문지
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• 제65권10호
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• pp.1664-1671
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• 2016

This paper presents the analysis of the gate-source voltage of the gallium nitride high electronic mobility transistor (GaN HEMT) in the half bridge structure focused on the mutual effects of two switching operation. Especially low side gate-source voltage is analyzed mathematically according to the high side switch turn-on and turn-off operation. Moreover, the influence of each gate resistance and parasitic component on the switching characteristic of other side switch is investigated, and the formula, simulation and experimental results are compared with theoretical data.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1997년도 추계학술대회 논문집 학회본부
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• pp.6-9
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• 1997

The study is analyzed the thrust fon:e of moving type Linear DC Motor(MM-LDM). The MM-LDM consists of a stator (platen) and mover (forcer). One of the method for calculating tile thrust of an MM-LDM is to analyze the energy gradient which is determined by the distribution of magnet flux. However, this method is very difficult when used to calculate the thrust force of this kind of LDM. The stored energy in the MM-LDM can be obtained by measuring the self-inductance and mutual-inductance of equivalent circuit of the MM-LOM and this energy gradient gives the thrust. The calculation of thrust force included in this motor shows that the mutual inductance has large influence on the generation of thrust force.

• Journal of Welding and Joining
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• 제22권4호
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• pp.73-81
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• 2004

Failure mechanisms of welded joints under fatigue loads are interpreted that multiple collinear surface cracks initiating randomly along the weld toes propagate under the mutual interaction and coalescence of adjacent two cracks. To estimate fatigue crack propagation life for three types of the representative welded joints, i.e. non-load carrying cruciform, cover plate and longitudinal stiffener joint, the stress intensity factors at the front of the surface cracks have to be calculated, which are influenced strongly by the geometry of attachments, weld toes and the crack shapes. For the effective calculation of the stress intensity factors the Mk-factor was introduced which can be derived by a parametric study performed by FEM considering influence of the geometrical effects. The fatigue life of the cruciform joint was estimated by using the Mk-factors and the method considering the propagation mechanisms of the multiple surface cracks. Analysis results for the fatigue life had a good agreement with that of experiment.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2000년도 하계학술대회 논문집 B
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• pp.873-875
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• 2000

The self- and mutual- winding inductances can have an important influence on both the steady-state and transient dynamic performance of a machine. Especially, slotless topologics have inherently low self- and mutual-stator winding inductance. Thus, this paper describes an analytical model for predicting the winding inductance and results are compared to finite element analyses.

• International Journal of Advanced Culture Technology
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• 제10권2호
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• pp.53-61
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• 2022

This study suggested the environmental components for open space in a healing environment based on the social support approach for integrating and enhancing users' activities and interactions. The physical environments of the open space in healing facilities should be suggested by social support design and support the interactions of various users. Particularly architectural environment conditions should reinforce the contribution to the revitalization of medical facilities based on improving the healing effect of patients through mutual exchange of users. The open space environment conditions influence users' healing process with physical design factors and users' interactions, and the flexible environments based on the social support that is crucial for circulation and mutual exchange of users. The open space transformation, integration of technology, and wayfinding system with color and signage also allow users to improve the space experience and easy access. The environmental components of open space design should include easy access for user inflow, flexible layout for comfort, access to outdoor spaces, integration of warm color schemes for relaxation, personalization of spaces with artwork, and visual interest through the use of textures and materials.

• 대순사상논총
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• 제17권
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• pp.227-237
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• 2004

The concrete, practical orientation of the Chinese toward the aim of communal harmony conditioned their approach toward philosophical differences. Ideological conflicts were seen, not only by the politicians but by the intellectuals themselves, to threaten societal well-being. Harmonious interaction was finally more important to these thinkers than abstract issues of who had arrived at the 'truth'. Perhaps the most obvious illustation of the way the Chinese handled their theoretical conflicts is to be found in mutual accommodation of the three emergent traditions of Chinese culture, Confucianism, Taoism and Buddhism. Beginning in the Han dynasty(206 BC-AD 200), the diverse themes inherited from the competing 'hundred schools' of pre-imperial China were harmonized within Confucianism as it ascended to become the state ideology. The harmony among confucianism, Buddhism and Taoism, traditional philosophical trend in China, is very important research subject at contemporary circumstance. For its cultual influences to surrounding nations, such as Korea, japan and Vietnam etc., are so crucial.

• 동의생리병리학회지
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• 제19권1호
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• pp.1-7
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• 2005

In Chinese philosophy, the concept of Yin and Yang, in the era of the Early China, applies to many more philosophical categories than merely the relationship between the sunny side and the shady side of the sun. A whole series of possible interactions between the Yin and Yang in life is contained in the Chinese Book of Changes, the I Ching. The philosophical theory and the origin of natural sciences of the I Ching is imbued in the Nei Ching. having absorbed and developed the essence of Book of Changes, the Nei Ching reflects the spirit of science. Under the influence of Book of Changes, as well as its idea of Yin and Yang, peculiar at the time, the Nei Ching adapts the essences of the theory of Yin and Yang. The contribution made by the Nei Ching to the development of the philosophical concepts of Yin and Yang lies in that it combines those philosophical concepts with medicine and makes this the basic theory of Chinese medicine. In the Nei Ching, the Yin and Yang theory asserts that the human body is an organic whole, and there exists an organic connection between all tissues and structures. Therefore, the Yin and Yang functions as an essential life that plays a major role of the organic interrelation, the mutual control, and the mutual assistance. Yet, at the same time, each of them can be divided into the opposite aspects of yin and yang. Yin and yang depend on each other for existence. Without yin, there would be no yang, Without yang, there would be no yin. Neither can exist in isolation. Thus the interrelation of Yin and Yang is premised on the two opposite forces and aspects as the underlying cause of all change of Yin and Yang.

• 한국항해항만학회지
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• 제27권2호
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• pp.145-153
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• 2003

가상현실 (VR) 시뮬레이터의 임장감 증대방법을 제안했다. 이 방법은 입체영상과 3차원음향 사이의 상호 상승효과에 의하여 인간이 느끼는 현실감을 증대시키기 위한 것이다. 상호 상승효과를 실험하기 위하여 PC 모니터와 LCD 셔터그래스로 구성된 VR 시뮬레이터를 이용하여 5명의 대학생을 대상으로 주관평가를 실시하였다. 실험결과, 입체영상에 3차윈음향을 부가한 경우, 자연감을 나타내는 척도 $I_{nat}$ 가 3.1에서 3.6으로 0.5 상승하고, 음상정위 평가척도 $A_{SL}$ 는 70~75%에서 80~85% 로 10% 상승하는 결과를 나타냈다. 따라서, 이 연구에서 제안한 방법이 VR 시뮬레이터의 현실감을 증대시킬 수 있었다.

• 한국항공우주학회지
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• 제38권7호
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• pp.709-715
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• 2010

MCDD는 다채널 신호를 수신 받아 분리하고 복조하여 OBP 위성의 내부에서 스위칭, 채널 부호화 및 재변조 등의 신호처리가 가능하도록 하고 있다. 다채널 신호를 분리하는 과정에서 주파수 오프셋 및 양자화 오류 등의 요인들이 OBP 위성 시스템의 BER 성능을 저하시키므로 이러한 요인들의 영향을 줄여야 한다. 주파수 오프셋의 영향은 보호 대역을 삽입함으로써 줄일 수 있으며 양자화 오류의 영향은 양자화 레벨을 조정함으로써 줄일 수 있다. 시스템의 데이터 전송률을 제한하지 않았을 때 보호 대역의 삽입과 양자화 레벨의 조정은 서로 영향을 미치지 않으나, 시스템의 데이터 전송률이 제한되면 보호 대역의 삽입과 양자화 레벨의 조정을 상호 고려해야 한다. 이 논문에서는 시스템의 데이터 전송률이 제한된 상황에서 보호 대역과 양자화 레벨간의 관계를 살펴보고 이를 고려한 BER 성능을 분석한다.

• 한국의류학회지
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• 제19권1호
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• pp.115-128
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• 1995

The purpose of this study was to investigate the role structure of husband and wife on husband's clothing purchase. For the study, a questionnaire was developed to measure the influence structure and clothing evaluative criteria of husband's clothing purchase and psychological and demographic characteristics of husband. The Purchase influence structure can be defined by applying the concept of Wolfe's power pattern to decision making about buying behavior. Influence structure is the pattern in which influence is distributed among family buying center members for each purchasing decision making item. The analysis was conducted on the basis of 310 couples responces. The result of this study ware as follows; 1. The majority of husband's clothing items were an absolute autonomic·decision product Exceptionally underwear was wife-dominated. The purchase influence structure of husband' s clothing purchase varied on stages in the decision making process. Wife was involved considerably in gathering information search and real purchasing stage. 2. According to the degree of husband and wife influence on discussion stage and final decision stage, consumers were categorized into five types. Husband's psychological characteristics such 3s shopping interest, clothing involvement, importance of mutual satisfaction in purchasing and demographic characteristics were significantly different among types.