• 한국콘텐츠학회논문지
• /
• 제15권2호
• /
• pp.529-541
• /
• 2015

대학교육에서 이상적인 '집단지성기반의 협력학습' 모델은 아직 합의되지도 않았고 여전히 이론적인 수준에 머물러 있다. 집단지성기반의 협력 학습이 되기 위해선 다양한 구성원들이 자신이 가진 최대한의 역량을 동원하여 공동의 목표 달성을 위한 기여에 능동적으로 참여할 수 있도록 촉진하고 배려해야 한다. 아직 교육현장에서 실제 모형이 개발되지 않고 있는 집단지성기반의 협력학습모델은 창의적 융합인재 양성에 핵심적 프로그램이라 판단된다. 그러하기에 현대 강연의 주요 특징인 집단지성형 콘텐츠로의 진화는 수시로 확인하고 눈여겨 볼 필요가 있다. 그와 연관된 시도의 일환으로 본 연구는 tvN이 기획하고 시도한 커넥티브 강연쇼 '창조클럽 199' 콘텐츠에 주목하였다. 지향하는 기획 의도도 시대의 요구를 잘 수렴하고 있지만 더욱 돋보이는 것은 참여자들과 함께하는 집단지성 기반의 '방법' 들을 현실에 구현해내었다는 점이다.

• 한국강구조학회 논문집
• /
• 제25권2호
• /
• pp.153-164
• /
• 2013

본 연구에서는 균일휨모멘트를 받는 일축대칭단면 HSB800 고강도강 플레이트거더의 횡비틂좌굴(LTB) 강도를 비선형해석으로 평가하였다. 압축플랜지 단면이 인장플랜지에 비해 작은 경우와 큰 경우에 대해 각각 세장, 비조밀 및 조밀 복부판을 갖는 단면들을 고려하였으며, 비지지길이는 비탄성 LTB 영역을 대상으로 하였다. Eurocode 3 및 AASHTO, AISC 기준들과의 비교를 위해 단일패널모델과 3-패널모델을 각각 고려하였으며, 모델의 타당성을 평가하기 위해 SM490 강재 거더에 대해 먼저 해석을 수행하고 각 기준과 비교하였다. 이후 동일한 방법으로 HSB800 강재거더에 대해 LTB 강도 평가 해석을 수행하였으며, 압축플랜지 단면이 인장플랜지에 비해 작고 비조밀플랜지-세장/비조밀복부판 단면들은 현재 기준의 휨강도에 도달하지 못하는 결과를 얻었다.

• 복식문화연구
• /
• 제4권3호
• /
• pp.349-359
• /
• 1996

The research was designed to find out the effects of design elements ; ①color, ②pattern, on image perception of clothing by using a qualitative depth interview method. The subjects were 40 women who lived in Taejon and aged 20 to 40. The interview results were both hand recorded and tape recorded for further analysis by researchers and judge groups. And the results were as follows. 1. The most preferred colors appeared to be blue and black, while stripes, checks and flowers were most favorite patterns. 2. There were individual difference in color and pattern perception, however the color image of yellow was brightness, red was dashing, green comfortable, blue cool, and black tightness. The image of geometric pattern was modesty and natural motif pattern was dynamics. 3. The tow major forces which affected the image of design elements were appeared as followed : 1) Color images affected by the image of natural objects which obtained the color. 2) Individuals past experience and emotional status also affected the personal image perception. 4. The color and pattern preference for the Koran traditional customes and Western tow piece were significantly different and this result imply cultural stereotyping on image perception of design elements. On conclusion, the results supported the research model of form perception and image evaluation.

• 한국염색가공학회지
• /
• 제17권2호
• /
• pp.19-25
• /
• 2005

A colour-difference formulae would be based on a colour appearance model, but, So far, most colour-difference formulae in common use are based on empirical fits to data. Therefore, of the many proposed, none are completely satisfactory but advances have been made in recent years. A new color-difference data set has been produced with the aims of making a comparison of the advanced CIE Lab formulae as well as confirming the effect of color-difference. 416 low lightness pairs that have only lightness-difference were produced for evaluation of CIE Lab-based formulae on lightness-difference from glossy polyester fabric. The standard color-difference pair was prepared and used. It was neutral grey sample pair that has only lightness difference. The standard pair was used to investigate lightness tolerances. And grey-scale method used to evaluate visual assessment. CIE Lab coordinates of the samples were measured using a X-Rite 8200 spectrophotometer. Visual assessments were carried out using Gretag Macbeth The Judge II Light Booth. A study of color tolerances at low lightness was carried out and get avaliable some results.

• 한국농공학회:학술대회논문집
• /
• 한국농공학회 2002년도 학술발표회 발표논문집
• /
• pp.257-260
• /
• 2002

이 연구는 지하수개발사업 타당성 분석을 지원하기 위한 Desk GIS에 기반한 지하수사업기초조사지원 시스템을 개발하는 것이 목적이다. 개발된 시스템을 이용하면, 신규 개발 예정관정에 대하여 GIS안에서 모의 양수실험을 할 수 있으며, 기설관정의 채수영향반 경과의 중첩여부, 오염원 등과 비교하여 지하수관정개발사업의 허가여부를 판단할 수 있다. 농업기반공사 등 지하수 관련 부서들이 전사적으로 지하수 관련자료를 공유할 수 있으며, 자료의 정확성, 신뢰성 그리고 최신정보를 공유할 수 있을 것이다.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제9권4호
• /
• pp.1392-1403
• /
• 2015

The rapid development of both communication traffic and increasing optical network sizes has increased energy consumption. Traditional algorithms and strategies don't apply to controlling the expanded network. Immunization algorithms originated from the complex system theory are feasible for large-scale systems based on a scale-free network model. This paper proposes the immunization strategy for complex systems which includes random and targeted immunizations to solve energy consumption issues and uses traffic to judge the energy savings from the node immunization. The simulation results verify the effectiveness of the proposed strategy. Furthermore, this paper provides a possibility for saving energy with optical transmission networks.

• Structural Engineering and Mechanics
• /
• 제75권4호
• /
• pp.465-475
• /
• 2020

The analytical approach for stability and response of iced conductor under uniform wind or turbulent wind is presented in this study. A nonlinear dynamic model is established to describe the motion of iced conductor galloping. In the case of uniform wind, the stability condition is derived by analyzing the eigenvalue associated with linearized matrix; The first order and second order approximation of galloping amplitude are obtained using multi-scale method. However, real wind has random characteristics essentially. To accurately evaluate the performance of the galloping iced conductor, turbulence wind should be described by random processes. In the case of turbulence wind, the Lyapunov exponent is conducted to judge the stability condition; The probability density of displacement is obtained by using the path integral method to predict galloping amplitude. An example is proposed to verify the effectiveness of the previous methods. It is shown that the fluctuating component of wind has little influence on the stability of iced conductor, but it can increase galloping amplitude. The analytical results on stability and response are also verified by numerical time stepping method.

• 통상정보연구
• /
• 제9권4호
• /
• pp.141-158
• /
• 2007

The purpose of this paper is to examine the validity or effectiveness of the Arbitration Clause such as Model Clause I, and to confirm how other issues such as arbitrable "investment", appointment of arbitrators and law governing the agreement be reflected in the agreement. However, the parties should be sure that the arbitration clause is valid if they have checked whether, for their particular situation, the ICSID Centre has jurisdiction. For the validity of the Arbitration Clause, first the host country and the country which the investor belong to must be "contracting states" to the ICSID Convention. Second, the specific consent to arbitrate must be expressed in writing in the investment contract or in a national investment law or in an investment protection treaty. The issue of "nationality" of an other contracting state is determined by the place of incorporation or the location of the head office. In case the parties have doubts about a valid consent to arbitrate, Art. 41 of the ICSID Convention provides, regarding ICSID jurisdiction, that the tribunal shall be the judge of its own competence. It follows that ICSID Arbitration has an autonomous and exclusive character. As a consequence, domestic courts may not interfere with the question of ICSID's jurisdiction, which is called as "rule of abstention".

• Composites Research
• /
• 제30권3호
• /
• pp.188-192
• /
• 2017

The mechanical properties of composites are significantly affected by external environment. It is essential to understand the degradation of material performance and judge the material's lifetime in advance. In the current research, changes in mechanical properties of glass fiber and unsaturated polyester composite materials (GFRP, Glass fiber reinforced plastic) were investigated under different bending stress and submerged in hot water at a temperature of $80^{\circ}C$. Loading time of 100 H (hours), 200 H, 400 H, 600 H, 800 H for testing under stresses equal to 0% (stress-free state), 30%, 50% and 70% of the ultimate strength was applied on the GFRP specimens. From the values of bending stress, obtained from three-point bending test, fracture energy, failure time, and life curve were analysed. Moreover, a normalized strength degradation model for this condition was also developed. It was observed that within 100 H, the decline rate of the bending strength was proportional to the pressure.

• Journal of Mechanical Science and Technology
• /
• 제20권3호
• /
• pp.366-375
• /
• 2006

In this paper, it is intended to introduce a method to solve multi-objective optimization problems and to evaluate its performance. In order to verify the performance of this method it is applied for a vertical roller mill for Portland cement. A design process is defined with the compromise decision support problem concept and a design process consists of two steps: the design of experiments and mathematical programming. In this process, a designer decides an object that the objective function is going to pursuit and a non-linear optimization is performed composing objective constraints with practical constraints. In this method, response surfaces are used to model objectives (stress, deflection and weight) and the optimization is performed for each of the objectives while handling the remaining ones as constraints. The response surfaces are constructed using orthogonal polynomials, and orthogonal array as design of experiment, with analysis of variance for variable selection. In addition, it establishes the relative influence of the design variables in the objectives variability. The constrained optimization problems are solved using sequential quadratic programming. From the results, it is found that the method in this paper is a very effective and powerful for the multi-objective optimization of various practical design problems. It provides, moreover, a reference of design to judge the amount of excess or shortage from the final object.