• 한국주거학회논문집
• /
• 제27권3호
• /
• pp.31-38
• /
• 2016

This study derives the characteristics of physical environmental designs and formats which can serve as guidelines in spatial design for the social regeneration of residential areas. For this purpose, this study redefined factors of social regeneration in living areas and their design strategies through a theoretical review. This study also selected practical examples and investigated the characteristics of environmental design in terms of shapes, finishing, and devices used stated in the strategies for social regeneration in the given examples through field investigation. As a result, designs for communities should Maximize characteristics of daily use and formated types reused as well as use complicated and small facilities. Second, access types should make it easy to induce artificial movement, themes using finishing materials should be given, and perception media should be used to encourage physical activity. Third, psychological stability can be achieved by improving the colors used in the finishing materials, and should ensuring safe environmental facilities by design. Finally, for metaphoric contact to the properties of nature, using themes of nature in the finishing materials and in diverse devices.

• 한국문헌정보학회지
• /
• 제39권2호
• /
• pp.161-183
• /
• 2005

본 연구에서는 현재의 라이선스 기반의 전자저널 구독모델 하에서 서비스 중단 등 미래의 예기치 못한 불확실성을 해소하고 영속적인 원문 엑세스의 보장을 확보하기 위해 반드시 필요한 해외 전자저널 원문자료에 대한 디지털 아카이브의 구축과 보존을 수행하는 데 예상되는 제반 위험요소와 핵심 성공요인을 분석함으로써 우리나라 도서관 현실에 맞는 디지털 아카이브 구축 모델과 전략을 제시하고자 한다.

• 대한공간정보학회지
• /
• 제16권2호
• /
• pp.3-8
• /
• 2008

오늘날 정보화는 디지털 환경에서 유비쿼터스 정보환경으로 발전하고 있다. 이러한 정보환경의 변화에 효과적으로 대응하기 위해서 정부는 유비쿼터스 기술을 이용하여 국가발전을 추구하고자 u-Korea 정책을 추진하고 있다. 한편, 국가의 공간정보화의 기틀인 국가GIS 역시 유비쿼터스 환경으로의 발전을 모색하고 있다. 그러나 아직까지 유비쿼터스 정보환경에 대한 뚜렷한 변화와 관련기술의 실용화는 나타나지 않고 있는 실정이다. 본 연구는 '유비쿼터스'라는 정보환경의 변화에 직면한 국가GIS 정책 방향을 모색하기 위해 우리나라와 일본의 유비쿼터스 정책 및 국가GIS 추진전략을 상호 비교하여 각 분야별 시사점을 도출하였다.

• 대한조선학회 특별논문집
• /
• 대한조선학회 2005년도 특별논문집
• /
• pp.63-68
• /
• 2005

Optimum design of the big brackets is performed through iterated 3-D FE analyses to meet the permissible limits of stress, which consumes an excessive amount of calculation time. Therefore, this study has been prepared to determine rapidly and accurately an optimum size and scantling of the big brackets at the initial design stage. The generalized slope deflection method (GSDM) based on the span point concept is applied to enhance the efficiency of iterated structural analyses. The accuracy and applicability of the present method is verified by comparing with a detail 3-D FE analysis of web frame structures. As an optimization technique, evolution strategies (ES) are applied using discrete design variables for practical design.

• 대한조선학회논문집
• /
• 제40권6호
• /
• pp.12-19
• /
• 2003

Corrugated bulkheads for a bulk carrier are divided into watertight bulkheads and deep tank bulkheads. Design of the watertight bulkheads is principally determined by the permissible limit of Classification and IACS requirements. But, the verification of strength through finite element analysis is indispensable for design of the deep tank bulkheads. A stage for stress evaluation of corrugated part is required for optimum structural design of the deep tank bulkheads. Since the finite element analysis for real model requires excessive amount of calculation time, in this study one corrugated structure is replaced with beam element and is idealized as 2 dimensional frame structure connected to upper and lower stool Minimum weight design of the deep tank bulkheads is performed through generalized sloped deflection method(GSDM) as direct calculation method. The purpose of this study is the development of design system for the minimization of steel weight of deep tank bulkheads as well as watertight bulkheads. Discrete variables are used as design variables for the practical design. Evolution strategies(ES) is used as an optimization technique.

• 수산해양교육연구
• /
• 제8권1호
• /
• pp.28-40
• /
• 1996

In the last 20 years, educators have made significant advances in their thinking about how students learn and what it is that teachers ought to teach. They attempted to teach thinking s kills and designed instructional programs to facilitate learning. The purpose of this study was to review metacognitive approaches in reading comprehension instruction, and to provide some practical implications to school teachers. First, this study reviewed the concept of metacognition. Metacognition can be divided by metacognitive knowledge and metacognitive experiences. Metacognitive knowledge consists of knowledge or beliefs about what factors interact to affect the outcome of cognitive enterprises. Metacognitive experiences are executive control of one's own cognitive process, which include planning, monitorning and evaluating. Second, this study attempted to investigate the processes of reading comprehension in the metacognitively based view. Third, this study reviewed three kinds of reading comprehension instruction. In the metacognitive approaches, instruction is viewed as constructive process in which teachers and students mediate and negotiate meaning from the instructional environment. In order to enhance reading comprehension, teachers should use examples, explicit instruction, modeling, and elaboration to provide sufficient scaffolding to students. The scaffolding gradually diminishes as students learn to use and apply the reading strategies on their own. Also, students should be encouraged to attribute successful reading to the use of appropriate strategies.

• Journal of Electrical Engineering and Technology
• /
• 제7권6호
• /
• pp.814-823
• /
• 2012

Electric power transmission utilities make an effort to maximize profit by reducing their electricity supply and operation costs while maintaining their reliability. The development of maintenance strategies for aged components is one of the more effective ways to achieve this goal. The reliability centered approach is a key method in providing optimal maintenance strategies. It considers the tradeoffs between the upfront maintenance costs and the potential costs incurred by reliability losses. This paper discusses the application of the Particle Swarm Optimization (PSO) technique used to find the optimal maintenance strategy for a transmission component in order to achieve the minimum total expected cost composed of Generation Cost (GC), Maintenance Cost (MC), Repair Cost (RC) and Outage Cost (OC). Three components of a transmission system are considered: overhead lines, underground cables and insulators are considered. In regards to aged and aging component, a component state model that uses a modified Markov chain is proposed. A simulation has been performed on an IEEE 9-bus system. The results from this simulation are quite encouraging, and then the proposed approach will be useful in practical maintenance scheduling.

• Journal of Mechanical Science and Technology
• /
• 제19권7호
• /
• pp.1414-1423
• /
• 2005

This paper develops and evaluates several strategies for structural vibration control with the objective of attenuating broadband noise inside a rectangular enclosure. The strategies evaluated include model-independent collocated control, model-based feedback control and a new 'modal-estimate' feedback strategy. Collocated control requires no knowledge of model parameters and enjoys the advantage of robustness. However, effective broadband noise attenuation with colocated control requires a large number of sensor-actuator pairs. Model-based con-trollers, on the other hand, can be theoretically effective even with the use of a single actuator. However, they suffer from a lack of robustness and are unsuitable from a practical point of view for broadband structural vibration applications where the dynamic models are of large order and poorly known. A new control strategy is developed based on attenuating a few structural vibration modes that have the best coupling with the enclosure acoustics. Broadband attenuation of these important modes can be achieved using a single actuator, a limited number of accelerometers and limited knowledge of a few modal functions. Simulation results are presented to demonstrate the effectiveness of the developed strategy.

• 보건의료산업학회지
• /
• 제7권1호
• /
• pp.155-165
• /
• 2013

This study aims to identify the significance of adolescent suicidal ideation in a multicultural family, propose suicidal prevention strategies, and provide considerable foundations supporting their secured future. The research results are in the follow. For the results of main factors of relative influence on the suicidal ideation, the relative dangerousness levels were 5.5 times more likely to experience with drugs, 4.5 times more likely to have depressive symptoms, 3.2 times more likely to experience violence at school, and 2.8 times more likely to experience drinking alcohol, 1.4 times more likely to feel unhappiness and 1.3 times more likely to be bad off in economic status, all of which contribute to suicidal ideation. All results turned out to be statistically significant. Therefore, the findings and results of this study indicate that appropriate and practical prevention strategies to address the suicidal behavior of adolescents in a multicultural family need to be carefully considered and designed in a most urgent manner.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제13권1호
• /
• pp.172-185
• /
• 2019

In this paper, we investigate the performance of the diffusion adaptation strategies for parameter estimation in wireless adaptive networks, where the nodes exchange information over noisy and fading wireless channels. This paper shows the differences between the effect of Rayleigh and Rician fading over wireless adaptive networks and proves that the Rician fading is a more practical model in such kinds of networks. Simulation results imply that the effect of Rayleigh fading is more degrading for the estimation process than Rician fading. Also, the simulation results show the performance of adapt then combine (ATC) diffusion algorithm is better than the combine then adapt (CTA) algorithm by merely considering noise in wireless channels. While the performance of CTA prevails ATC over the wireless adaptive network in the presence of noise plus channel fading.