• 대한전기학회:학술대회논문집
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• 대한전기학회 1997년도 하계학술대회 논문집 A
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• pp.124-126
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• 1997

A number of electromagnetic devices periodically driven by solid-state switches have been analyzed with time-stepping finite element method, which requires much time to reach a steady state. The sensitivity analysis which have been used for the shape design is employed for an efficient calculation of linear magnetodynamics with nonsinusoidal driving sources. The high-order frequency sensitivity from the harmonic finite element formulation is used along with Fourier transform and Taylor series expansion. The algorithm is validated through a numerical example of a single-phase transformer driven by a trapezoidal voltage source.

• 로봇학회논문지
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• 제13권2호
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• pp.97-102
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• 2018

A small and lightweight crawling robots have been actively studied thanks to their outstanding mobility and maneuverability. Those robots can navigate into more confined spaces that larger robots are unable to reach or enter such as debris and caves. In this paper, we propose a milli-scale hexapedal robot based on planar linkage design. To make this possible, two necessary conditions for successful crawling are satisfied: thrust force from the ground and aerial phase while running. These conditions are achieved through a newly developed leg design. The robot has a pair of legs and each leg has three feet. Those feet alternatively moves based on 1DOF planar linkage. This linkage is installed at each side of the robot and finally the robot shows the alternating gait and aerial phase during running. As a result, the robot runs with the crawling speed of 0.9 m/s.

• 한국실내디자인학회논문집
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• 제14권3호
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• pp.224-233
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• 2005

Cyberspace is created through the confluence of global electronic communications networks and technology, and also meant to be a three-dimensional space of information. Its application in arts, however, requires broader views and knowledge and often results a confounded definition of it. The study is to define cyberspace and the architecture in it, with the methodology of the structural criticism, focusing the textuality without any impression or intuition to reach its valid epistemic definition. Two architects in cyberspace; Novak and Lynn, and their works have been discussed and analyzed reflecting Benedikt's theory of cyberspace which has coined its definition in architecture in early 90's. Lacan's subject theory, including the mirror stage, has played a key role to evaluate the identities and the differences of various views towards cyberspace. It also enables us to construe the on-going status and meaning of cyberspace and the architecture In it.

• 한국자기학회:학술대회 개요집
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• 한국자기학회 2002년도 동계연구발표회 논문개요집
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• pp.62-63
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• 2002

To reach 100 Gbit/in$^2$ magnetic recording densities in hard disk drives specular enhancement of giant magnetoresistance (GMR) effect in spin valve (SV) films has become one of the indispensable means for application as read elements in recording heads [1]. More recently specular spin valve (SSV) structure containing nano-oxides layers (NOL) were reported [2], where MR enhancement is caused to extended mean free path of majority spin polarized electrons through specular reflection at metal/insulator interfaces [3] in the SV films. (omitted)

• 디지털융복합연구
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• 제8권4호
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• pp.59-71
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• 2010

본 논문은 한국의 전자거래용 공인인증서 NPKI 정책의 개선 방안을 제시하고자 하였다. 전자상거래 인증 방식과 관련하여 여러 문제점이 부각되어 왔으나 그 중에서도 정부가 관리하는 NPKI 제도 및 시스템과 관련하여 현황과 문제점에 대해 연구하였다. NPKI 운영과 직접적으로 관련된 전문가 집단 간의 브레인스토밍을 통해 시스템 개선에 대한 여러 대안들을 검토하고 향후 적용 가능한 시나리오들을 도출하였고, 그 중에서 공인 인증키 인프라와 관련하여 최적의 정책을 선택하는 과정에 대해 논하였다.

• 한국입자에어로졸학회지
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• 제11권3호
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• pp.77-85
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• 2015

A Belousov-Zhabotinsky reaction in a liquid-liquid system under microwave radiation was observed under non-stirring conditions. To control this non-equilibrium reaction, nano-particle, which is active under microwave irradiation, was added to the solution. Color changes of the solution during the oscillatory reaction were found to be influenced by the irradiation power although the droplet temperature was equal to the temperature of surrounding oil. During the irradiation, the period of oscillation became shorter because the reaction rate was faster. It could also be observed that there is possibility to eliminate oscillatory behaviors of the reaction using higher power of microwave. The possibility of controlling non-linear reaction using microwave was shown since microwave can easily travel through oil phase and reach water phase.

• 한국기록관리학회지
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• 제8권1호
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• pp.123-142
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• 2008

본 연구는 레코드매니저의 계속교육 프로그램 개발을 목적으로 문헌연구와 설문조사를 중심으로 수행되었다. 문헌연구를 통해 레코드매니저가 갖추어야 할 필수적인 기록관리 지식범주를 살펴보았고, 설문조사를 통해 국내 기록물관리 전문요원 57명을 대상으로 계속교육에 대한 요구 및 만족도 등을 조사하였다. 문헌연구와 설문조사 결과를 토대로 레코드매니저를 위한 교육내용, 교육방법, 시간, 강사 등에 대한 구체적인 내용을 포함하는 계속교육 프로그램 모형을 제안하였다.

• 가정과삶의질연구
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• 제22권5호
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• pp.149-159
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• 2004

An Ethnographic Decision Model (EDM) to explore socioeconomic, cultural, and psychological factors related to the attitudes toward childless family was developed in this study. From college students' protocol writings, this research found that the participants in general had conservative views about childless families. They tended to simplify childless families as either infertile couples or DINK (Double Income No Kids) couples. The participants explained why they decided to have or not to have children in the future. They seemed to believe in a traditional family structure and idealize parental roles, while recognizing the high economic and psychological cost of rearing children. They claimed that Korean society set high standards for parents, which were too difficult to reach. The participants, having been educated to believe in self-actualization through their successful careers, struggled to choose between a family with children and one without children. This study was conducted with a holistic view, and highlighted the importance of interactions between traditional ideology about the family and socioeconomic contexts when interpreting college students' perspectives on childless family.

• 한국지능시스템학회:학술대회논문집
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• 한국퍼지및지능시스템학회 1995년도 추계학술대회 학술발표 논문집
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• pp.279-284
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• 1995

In CAI, it is very important to evaluate the grade of understanding which students reach about the scope of problem which students are studying. In this paper, to find out students' learning achievement, we make students reply to test which the system presents and then lead evaluation result using fuzzy number about answer result. Besides, we define the degree of prior knowledge of studentsd as conditioned fuzzy number and use existing fuzzy accuracy production function begore the stage of using fuzzy number, Next, we apply conditioned fuzzy number to accuracy degree of answer produces by this function. Through this, we come to the conclusion that evaluation result as to the same answer result is changed according to the degree of prior knowledge about the scope which students are studying.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2008년도 춘계학술발표대회 논문집
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• pp.270-273
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• 2008

Recycling of buildings is to purpose that confront the social structure and make a new development in the area and improve the local image for using specific location of local area and historic legacies, traditional culture, specialties and it is the element of the regional revitalization which is connected with the culture tour is able to provide a clue of remaking the local industry. In this study of regional revitalization, the purpose of this study is to analysis the case that succeed in recycling the building of the more useful tourist attractions, so, through the study, reach the event for the regional revitalization in our country and the effectively regional revitalization, then it considers the method of recycling design that raises a competitive power.