• 한국광학회지
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• 제11권4호
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• pp.250-254
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• 2000

반도체 레이저 광원의 되먹임 효과를 이용하여 레이저 도플러 속도계를 구현하였다. 움직이는 물체의 표면에 조사된 레이저광이 산란될 때 산란광은 물체의 속도에 비례한 도플러 변이를 일으킨다. 산란광의 일부를 레이저 공진기 내부로 입사키면 공진기 안에서는 발진광과 입사된 산란광이 혼합되어 두 개 광 사이의 차주파수로 레이저 전류가 변조되는 원리를 이용한 것이다. 본 실험에서는 원형 회전체에 레이저를 조사할 때 발생하는 산란광을 사용하여 회전 속도와 도플러 편이 주파수와의 관계를 비교하였다. 또한 회전면에 대한 레이저 입사 각도에 따른 도플러 주파수의 변화를 관찰하였다. 이로부터 도플러 주파수와 회전체 각속도 사이의 비례 관계 및 측정광의 입사 각도와의 선형성을 확인하였다.

• 동아시아식생활학회지
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• 제4권3호
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• pp.51-58
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• 1994

By the research of the actual state of food consciousness as the object of male, female 421 college students by major, non-major in food dietetics, the results are as follows. The validity degree of the guestion article appeared at the analysis of the knowledge of nutrition(the figure of Cronbach "${\alpha}$" overall 0.58, major 0.62, non-major 0.57). In the interest degree about nutrition knowledge of the major students were significant(P<0.05), but the non-major students were not significant, and there was a difference between two groups of the male and female, major and non-major students in the information about knowledge. The knowledge of the major students mostly get from school education, non-major from mass communication as TV and rodio, etc. There was not significant difference in self-consciousness degree of health of all the male, female students by major, non-major, and the self-consciousness degree about health of should not be significant to the food habit. Therefore deviating from acquirement of nutrition knowledge by the wrong medium of food consciousness of home dietary life, improvement plans should be activated for the right knowledge to practice in actual life. Taking the opportunity of food and nutrition education through literary subject in the curriculum of the college for students, good food consciousness must be properly applied all the part of dietary life, and it is urgent for them to carry out scientific and reasonable curriculum and educational material development.

• 천문학회보
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• 제42권2호
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• pp.37.1-37.1
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• 2017

Since the seminal work of Perrin, physicists have understood in the context of kinetic theory how ink slowly diffuses in a glass of water. The fluctuations of the stochastic forces acting on water molecules drive the diffusion of the ink in the fluid. This is the archetype of a process described by the so-called fluctuation-dissipation theorem, which universally relates the rate of diffusion to the power spectrum of the fluctuating forces. For stars in galaxies, a similar process occurs but with two significant differences, due to the long-range nature of the gravitational interaction: (i) for the diffusion to be effective, stars need to resonate, i.e. present commensurable frequencies, otherwise they only follow the orbit imposed by their mean field; (ii) the amplitudes of the induced fluctuating forces are significantly boosted by collective effects, i.e. by the fact that, because of self-gravity, each star generates a wake in its neighbours. In the expanding universe, an overdense perturbation passing a critical threshold will collapse onto itself and, through violent relaxation and mergers, rapidly converge towards a stationary, phase-mixed and highly symmetric state, with a partially frozen orbital structure. The object is then locked in a quasi-stationary state imposed by its mean gravitational field. Of particular interests are strongly responsive colder systems which, given time and kicks, find the opportunity to significantly reshuffle their orbital structure towards more likely configurations. This presentation aims to explain this long-term reshuffling called gravity-driven secular evolution on cosmic timescales, described by extended kinetic theory. I will illustrate this with radial migration, disc thickening and the stellar cluster in the galactic centre.

• 정보관리학회지
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• 제25권3호
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• pp.5-25
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• 2008

현대사회의 개인과 단체가 일상적으로 생산하는 다양한 디지털 객체는 현대 인류에게는 정보자산이지만 미래 인류에게는 소중한 디지털 유산이 된다. TRAC은 디지털 보존이라는 막중한 책무를 자임한 디지털 아카이브가 그 책무를 실효성 있는 방식으로 수행하고 있는지를 평가하기 위한 도구의 하나이다. 이 논문은 TRAC과 우리 나라의 웹자원에 대한 장기적 접근을 제공하는 것을 목적으로 하는 국립중앙도서관의 OASIS 간의 격차를 분석하고자 하는 목적으로 수행되었다. 평가 결과, OASIS는 조직 및 기술인프라 측면에 비하여 장기 보존 기능을 포함한 객체관리 인프라가 취약한 상태임이 확인되었다.

• 로봇학회논문지
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• 제11권4호
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• pp.193-204
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• 2016

This paper presents an anthropomorphic finger prosthesis for amputees whose proximal phalanx is mutilated. The finger prosthesis to be proposed is able to make the amputees to perform the natural motion such as flexion/extension as well as self-adaptive grasping motion as if normal human finger does. The mechanism of finger prosthesis with three degrees-of-freedom (DOFs) consists of two five-bar and one four-bar linkages. Two passive components composed of torsional spring and mechanical stopper and only one active joint are employed in order to realize an underactuation. Each passive component is installed into the five-bar linkage. In order to activate the finger prosthesis, it is required for the user to flex and extend the remaining proximal phalanx on the metacarpophalangeal (MCP) joint, not an electric motor. Thus the finger prosthesis conducts not only the natural motion according to his/her intention but also the grasping motion through the deformation of springs by the object for human finger-like behavior. In order to reveal the operation principle of the proposed mechanism, kinematic analysis is performed for the linkage design. Finally both simulations and experiments are conducted in order to reveal the design feasibility of the proposed finger mechanism.

• 한국의류학회지
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• 제33권1호
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• pp.115-126
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• 2009

This study is about the iconological analysis on woman and clothes of Richard Avedon's and Cindy Sherman's constructed photographies which have questioned about life and existence of woman and present new visions about woman in comtemporary society and culture. The woman in R. Avedon's disguises herself with clothes, while the woman in C. Sherman's changes herself depending on the circumstances. R. Avedon reveals the inside of woman and ego with his gaze. The woman in his photography is reborn as another-self and communicates with the viewer through her eyes. C. Sherman has cast doubts with a woman's point of view in the way of making herself as an object in her works. C. Sherman has presented a new way of thinking about woman's body and ego. The viewer gives feminity and identity to the woman in C. Sherman's photography who has kept asking a question about woman-herself. The identity of woman in the photography has been changed depending on what she is wearing, what she is doing and where she is. Like this, the clothes which she puts on becomes another-self and also expresses life and dignity of the woman.

• 한국콘텐츠학회논문지
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• 제11권5호
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• pp.50-56
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• 2011

본 연구는 복합지식 객체를 기반으로 다차원적인 관계를 쉽게 식별하고 검색할 수 있도록 복합지식의 3D 가시화방법을 제안한다. 이를 위해 복합지식을 네트워크 형태의 의미화된 링크와 노드로 구조화하고 3차원 형태로 보여줄 수 있도록 SOM을 이용한 가시화방법을 제안하였다. 또한, 3D 공간상에서 복합지식을 배치하고 사용자에게 제공함으로써 보다 실감적이고 직관적인 정보검색의 기회를 제공하기 위해서 객체 유사도를 이용한 복합지식의 3D 클러스터링 방법을 제안하였다. SOM을 이용한 복합지식의 3D 가시화와 클러스터링은 복합지식의 맥락과 연계성을 시공간에 가시화하는데 최적의 방법이 될 수 있다.

• 한국보건간호학회지
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• 제14권2호
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• pp.203-215
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• 2000

The purpose of this study is to identify the effects of the supportive program for arthritis patients. who are attending a rheumatoid arthritis clinic. To achieve this purpose. this study adopted a quasi-experimental. pre- and post-test research design. comparing experimental group with control one. Supportive program was composed of in-depth. 3 times of direct interview and 2 times of advice using telephone for 8 weeks. The object of these interviews and phone was focused on the improvement of patients' preception for health. During this period. the level of pain, hemato-immunologic indices(ESR, CRP). self-efficacy, depression. and perception for health were measured in both grooups. Data were analysed by $x^2-test$, t-test. repeated measures ANOVA and Pearson's correlations. The results were as follows : 1. There were no significant differences in physiological data. 2. The feeling of self-efficacy was significantly increased in experimental group(P=.012), 3. There was no significant differences in depression. 4. The perception for health status was significantly increased in experimental group(P=.002). Thus, the supportive program. which is focused on the close interpersonal communication. proved to be effective. This result justifies the following suggestion that the role of the nursing professionals in out-patient clinic should be extended for more qualified care for the patients.

• 정보교육학회논문지
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• 제14권3호
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• pp.395-404
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• 2010

수학 교육이 해결해야하는 과제 중 하나는 학습 부진아 문제이다. 이러한 문제를 개선하고 효율적인 학습 부진아 지도를 위해 '도형아 놀자'라는 교수.학습 시스템을 개발하였다. 도형아 놀자 교수학습 시스템은 학습 부진아의 수준에 맞는 맞춤식 교육을 목표로 도형영역의 내용을 5단계로 재구성하였다. 이를 바탕으로 학습부진아에게 도형에 대한 흥미 및 자기 주도적 학습 능력을 길러주기 위해 학년 구분 없이 수준에 따라 재구성하고 학습 부진아들이 자기 수준에 맞는 단원을 선택하여 스스로 문제를 해결해갈 수 있도록 시스템을 구성하였다.

• 한국산학기술학회:학술대회논문집
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• 한국산학기술학회 2006년도 추계학술발표논문집
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• pp.216-219
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• 2006

Self management of chronic asthma is of great importance, since the disease could lead the patient into an emergent situation. In the present study, we describe design and implementation of a personal digital assistant(PDA) based asthma management system for personal application including symptom and medication to prevent from the potential exac-erbation of the disease. The software program was written by the Visual C++ tool in the mobile computing environment and Object Store was applied for data management. User friendly GUI environment was provided for the patient to input his/her daily condition and self treatment such as medication for suc-cessful management. The input screen design substituted for keyboard input to a mouse in order to easy to select an item and minimize the keyboard input. The implementation results of this system., Real-time data collection and process were possible and be able to have been carried effectively out a continuous symptom, a medication of asthma patients, risk management.