• 디지털콘텐츠학회 논문지
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• 제4권1호
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• pp.91-99
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• 2003

웹 기술의 발전으로 웹 기반 가상교육은 텍스트 기반에서 하이퍼 미디어 기반으로 발전하고 있으며, 단순히 교육 자료를 한쪽으로 전달하는 방법에서 벗어나서 교수자와 학습자간의 상호작용 제공하고 있다. 여기는 RIA(Rich Internet Application) 기반 동적인 응용 프로그램과 멀티미디어가 사용되고 있다. RIA는 웹의 새로운 기법으로 보다. 효율적이고 풍부한 컨텐츠를 학습자에게 제공할 수 있도록 해 준다. 기존의 웹 언어들은 개발에 많은 노력을 들여야 하지만, RIA 패러다임을 이용하면 쉽고 빠르게 개발할 수 있다. 본 논문에서는 RIA 기반 교육 시스템을 개발하여, 기존의 non-RIA 기반 시스템의 개발 노력을 평가한다.

• 지역사회간호학회지
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• 제12권2호
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• pp.317-328
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• 2001

The purposes of this study were to develop the empowerment education program, to describe the experiences of diabetes patient's empowerment process and to develop a theoretical model of the diabetes patient's empowerment process. Method 1. : The development of the empowerment program for the diabetes patients: The strategies of the empowerment education program were enhancement of problem - solving, decision making, self-efficacy, self-control. participation and mutual support. Method 2. : According to the grounded theory methodology of Strauss and Corbin, the qualitative data was collected with in depth interviews and participants observations until its saturation when the 25 consented subjects were participating and interacting with the other subjects in the empowerment education program. Results: With the analysis of the data, 29 categories were generated. The core category generated, which was a central phenomenon of the empowerment process, was named powerlessness. The intervening conditions facilitating or impeding the empowerment process were discovered as supportive systems through the participation of group meeting, problem solving dialogue, and the knowledge deficit of self-care. The action/interaction strategies were developed as the paricipating, dialoguing, questioning, supporting system, self-controlling, self efficacy, enhancing self-esteem. stress relaxing and instillation of hope.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2004년도 춘계학술발표회
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• pp.129-136
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• 2004

Anisotropic characteristics of deformation are important to understand the particular behavior in the pre-failure state of soils. Recent experiments shows that cross-anisotropic moduli of granular soils can be expressed by functions of normal stresses in the corresponding directions, which is closely linked to micromechanical characteristics of particles. Granular soils are composed of a number of particles so that the force-displacement relationship at each contact point governs the macroscopic stress-strain relationship. Therefore, the micromechanical approach in which the deformation of granular soils is regarded as a mutual interaction between particle contacts is one of the best ways to investigate the anisotropic deformation of soils. In this study, a numerical program based on the theory of micromechanics is developed. Modified Hertz-Mindlin model is adopted to represent the force-displacement relationship in each contact point for the realistic prediction of anisotropic moduli. To evaluate the model parameters, a set of analytical solutions of anisotropic moduli is derived in the isotropic stress condition. By comparing the analytical solutions with exact values, we confirm that the analytical solutions can be utilized to evaluate model parameters within the acceptable range of error of 10%.

• 복식
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• 제31권
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• pp.203-214
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• 1997

The neck is the human body is closely con-nected with the life and properties of keeping warm as one of the opening part in clothes. In ancient times it was put on necklace for the protection of neck and in Rome it was worn muffler called focale for the protection of neck throat. in addition cravat directly originated in necktie today was primarily worn for the protection of soldier's neck and has been turned into decorative purpose until today. As the ornament is developed to vari-ous kinds of form the neck decoration is changed and grown again and again. Therefore this thesis studies history of the neckwear and various the symbolic factor. The first factor is the social. The neckwear shows the social position class and status and does social mutual interaction as conversation starters. The second factor is the mental It express individuality fondness attitude and is felt to be indignity by being forced to be worn. The third factor is the political. it shows political tendency by indicating the royal sign or part's sign in necktie like the French royal-ist's green muffler The forth factor is the man's sexual. I expresses wearing stock being brave symbol-izing independence. The sixth factor is the traditional. It is worn with appearing traditionand custom and one of cultural movements. The seventh factor is the ideological. It symbolizes the freedom of suffragettes and emancipation of woman. The social factor is the most extensive among them. The neckwear is various in the way of expression like its kinds and is generalized, It functions as a independent part of clothes.

• Journal of Mechanical Science and Technology
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• 제15권12호
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• pp.1741-1749
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• 2001

Recent studies of the structure of wall turbulence have lead to the development of a conceptual model that validates and integrates many elements of previous models into a relatively simple picture based on self-assembling packets of hairpin vortex eddies. By continual spawning new hairpins the packets grow longer in the streamwise direction, and by mutual induction between adjacent hairpins the hairpins are strained so that they grow taller and wider as they age. The result is a characteristic growth angle in the streamwise-wall normal plane. The spanwise growth of individual packets implies that packets must either merge or pass through each other when they come into contact. Direct numerical simulations of the growth and interaction of spanwise adjacent hairpins shows that they merge by the vortex connection mechanism originally proposed by Wark and Nagib (199). In this mechanism the quasi-streamwise legs of two hairpins annihilate each other, by virtue of having opposite vorticity, leaving a new hairpin of approximately double the width of the individuals. PIV measurements in planes parallel to the wall support this picture. DNS of multiple hairpins shows how the spanwise scale doubles when the hairpins form an array.

• 한국세라믹학회지
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• 제51권3호
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• pp.150-155
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• 2014

In aprevious study, the mutual interaction between $Fe_2O_3$ and $TiO_2$ was found to influence the color of celadon glaze. Celadon samples were prepared with varying concentrations of $TiO_2$ at a fixed level of $Fe_2O_3$. The electronic states of Fe and Ti were analyzed by M$\ddot{o}$ssbauer spectroscopy and electron spin-resonance spectroscopy, respectively. These results were examined with the celadon colors measured according to CIELAB values. This study revealed that an increase of $Ti^{3+}$ in the glassy phase decreased the $Fe^{2+}/Fe^{3+}$ ratio, resulting in a color change of the celadon samples in the GY and Y groups. The maximum reflectance wavelength was shifted from 505 nm to 610 nm with an increase in the $TiO_2$ concentration.

• 한국콘텐츠학회논문지
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• 제16권4호
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• pp.569-581
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• 2016

본 연구에서는 상호주관성에 대한 연구경향성과 심리치료로서의 임상적 의미에 대하여 이론적으로 탐구하고자 하였다. 이를 위해 본 연구는 심리치료에서의 상호주관성이 어떻게 중요한지에 대한 이론적 개념에 대해 탐구하였으며, 구체적으로 살펴보면 첫째, 상호주관성의 개념 및 연구경향성 과 둘째, 발달과정으로서의 상호주관성, 셋째, 애착과 상호주관성, 넷째, 심리치료에서의 상호주관성으로 나누어 면밀히 살펴보고자 하였다. 본 연구를 통해 인간의 발달에서 상호주관성이 어떠한 영향을 미치고, 심리치료 분야에서 구체적으로 어떻게 적용될 수 있는지 그 이론적인 기초와 근거를 마련하는데 활용될 수 있을 것이다.

• 한국통신학회논문지
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• 제27권11C호
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• pp.1090-1096
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• 2002

웹 프로토콜인 HTTP은 이전 상태 정보를 저장하지 못하는 stateless 특성을 해결하기 위해서 쿠키(cookie)가 제안되었다. 그러나 쿠키는 평문 형태로 전송이 되며, 사용자 컴퓨터에 일반 텍스트 형태로 저장된다. 따라서, 공격자에게 쉽게 노출되어 쿠키 파일의 복사, 수정이 가능하여 보안적인 안전성에 심각한 위험이 존재한다. 본 논문에서는 이러한 쿠키의 보안 문제를 해결하기 위해서 공개키 인증서 기반의 새로운 보안 쿠키를 설계한 후 이를 구현하였다. 제안된 보안 쿠키는 사용자와 웹 서버간의 상호 인증 및 사용자 정보의 기밀성 및 무결성을 제공한다. 또한 웹 서버의 사용자 관리에 따른 부가적인 관리비용을 최소화시키기 위해 사용자 관리 정보를 보안 쿠키에 포함시킬 수 있다. 부가적으로 제안 방안의 성능 평가를 위해 기존의 HTTP 환경에서의 보안을 위해서 널리 사용되고 있는 SSL과의 수행 시간을 비교 분석하였다.

• Applied Microscopy
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• 제46권3호
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• pp.134-139
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• 2016

Detailed structural and molecular imaging of intact organs has incurred academic interest because the associated technique is expected to provide innovative information for biological investigation and pathological diagnosis. The conventional methods for volume imaging include reconstruction of images obtained from serially sectioned tissues. This approach requires intense manual work which involves inevitable uncertainty and much time to assemble the whole image of a target organ. Recently, effective tissue clearing techniques including CLARITY and ACT-PRESTO have been reported that enables visualization of molecularly labeled structures within intact organs in three dimensions. The central principle of the methods is transformation of intact tissue into an optically transpicuous and macromolecule permeable state without loss of intrinsic structural integrity. The rapidly evolving protocols enable morphological analysis and molecular labeling of normal and pathological characteristics in large assembled biological systems with single-cell resolution. The deep tissue volume imaging will provide fundamental information about mutual interaction among adjacent structures such as connectivity of neural circuits; meso-connectome and clinically significant structural alterations according to pathologic mechanisms or treatment procedures.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2003년도 추계학술대회논문집
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• pp.446-451
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• 2003

This paper presents some examples of active control of flow-induced vibration using piezoelectric actuators. The flutter phenomenon, which is the dynamic instability of structure due to mutual interaction among inertia, stiffness, and aerodynamic forces, may cause catastrophic structural failure, and therefore the active flutter suppression is one of the main objectives of the aeroelastic control. Active flutter control has been numerically and experimentally studied for swept-back lifting surfaces using piezoelectric actuation. A finite element method, a panel aerodynamic method, and the minimum state space realization are involved in the development of the governing equation, which is efficiently used for the analysis of the system and design of control laws with modern control framework. The active control suppressed flow-induced vibrations and extended the flutter speed around by 10%. Another representative flow-induced vibration phenomenon is the oscillation of blunt bodies due to the vortex shedding. In general, it is quite difficult to set up the numerical model because of the strong non-linearity of the vortex shedding structure. Therefore, we applied adaptive positive position feedback controller, which requires no pre-determined model of the plant, and successfully suppressed the flow-induced vibration.