스마트 섬유는 외부의 열적, 기계적, 전기적인 환경의 조건이나 자극에 대하여 감응하고 반응하는 섬유를 의미한다. 스마트 의류의 구성하는 여러 요인들 가운데 전도성 소재가 중요하며, 전도성 물질로서 사용되는 있는 재료들은 전도성 고분자, 금속 나노 물질, 탄소를 기반으로 하는 마이크로 또는 나노 크기의 물질들이 있다. 전도성 고분자는 좋은 전기 전도성과 유연성을 가지고 있으나 태양광이나 열에 취약한 환경적인 불안정성을 내포하는 등의 단점을 가지고 있다. 금속 나노 입자들은 높은 전도성을 가지고 있으나 유연성의 부족, 가격이 단점을 포함하여 세척시에나 또는 물로 흘러나올 수 있다는 환경에 대한 부정적인 요인이 문제점으로 제기되고 있다. 탄소 기반의 물질들 중에서 탄소 나노 튜브나 그래핀이 가장 많이 사용되고 있으며 그 작용성에 대한 잠재성이 가장 높은 물질들이다. 그래핀의 높은 전기 전도도, 유연성, 인체 친화적인 성질 등의 우수한 물리적, 기계적 성질을 특성을 활용하여 다양한 스마트 섬유들이 탑재되고 있다. 그래핀은 현재 문제점은 있으나 쉽게 생산하는 법이 개발되고 대형의 그래핀을 생산하는 방법 등이 개발되어 그 발전성은 매우 크다.

이 세상의 온갖 자연과 사물은 모두 일정한 비를 이루고 있다. 이러한 비례의 조화는 시각적으로 안정감을 주는 중요한 요소임과 동시에 아름다움을 느끼게 하는 기본적인 조건이 되며, 비의 조화를 기반으로 한 아름다움은 일정한 비가 있을 때 이루어진다고 할 수 있다. 자연계에는 무수히 많은 비율이 존재한다. 화합물은 지극히 안정된 구조를 필요로 하기 때문에 특정 조형비를 가지는 다양한 정다각형 구조로 되어 있다. 특히, 유기체는 합목적성에 맞게 어떤 특정한 비율을 선택하기 때문에 자연에는 정말로 다양한 비율이 존재한다. 심지어 바이러스의 경우는 이 들 특정 조형비들의 조합으로 되어 있다. 사실 황금비나 금강비나 이 무한한 비율의 특수한 경우 중의 하나라 할 수 있다. 유사한 비율을 보이는 사례까지 이 범주에 넣어 확대 해석하는 것은 바람직한 일이 아니라 생각된다. 인간의 주관적 심미안은 특정 비율에 대한 선호도를 가진다. 어떤 예술품이나 건축물에서 보이는 특정비율의 선호도는 우연하게 인간의 주관적 심미적 요소와 부합된 경우라 할 수 있다. 21세기에 들어 인류 영속성의 전제는 ‘지속가능한 발전’이라는 화두를 낳았다. 이는 친환경적이고 에너지 효율적이며 인간의 편의성을 해치지 않아야 함을 의미한다. 본 논문에서는 자연에 존재하는 다양한 조형비와 완벽한 조형비로 널리 알려진 서양의 황금비와 한국을 비롯한 동양권에서 선호되는 금강비의 잘못 알려진 사례와 확대 해석 사례 등에 대하여 살펴보고자 한다. 이를 토대로 이러한 관점에서 심미적 요소 뿐 아니라, 인류의 영속성을 전제할 수 있는 실체화 가능한 새로운 패러다임의 다양한 조형비의 필요성에 대하여 고찰하고자 한다.

In the 2000s, wearable devices had been produced for the purpose of medical service and entertainment. With the growth of mobile devices that improved interaction with human beings, wearable devices that cost high although showing their potential have been developed and made for special industries such as military and logistics control, and thus have faced a great deal of difficulty with market creation. In 2015, wearable devices have tended to expand into general markets, including health care, sports, and games. Therefore, the purpose of this study is to conduct empirical survey on the next-generation users' awareness of wearable devices that emerged at the time when smart devices have changed their direction from something to carry to something to wear, and thereby to perform empirical preliminary research on the leading development direction and system establishment of the futuristic wearable device market. The study scope and methods are presented as follows: First, to analyze and outlook the domestic and foreign research trends and expected effects of wearable devices, previous studies are investigated and theoretical study is conducted. Secondly, the survey on the awareness of the future main users of wearable devices, or the next-generation user group, is conducted to look into their attitudes. Thirdly, the results from the survey on previous studies, theoretical study, and attitude research are used as the empirical material necessary for the leading development direction and system establishment of the futuristic wearable device market. The study subjects of this study were 81 college and university students in their 20s living in the metropolitan areas, who are the next-generation main users of wearable devices. They had person-to-person in-depth interviews. The questionnaire items were brand, interest, understanding of information, the extent of interest desire, the extent of purchase desire, purchase purpose, purchase factor, purchase region, non-purchase factor, and complementary factor for purchase. This study drew the following results and conclusions: Regarding the questions about interest in wearable devices, the extent of interest desire, the extent of purchase desire, purchase purpose, purchase factor, purchase region, non-purchase factor, and complementary factor for purchase, the positive replies were statistically significant regardless of sex, and there was high reliability of each question. The correlation between questions was not independent and thus it was proved that they had correlation. Typical global brands were found to be Apple Watch, Samsung Gear, and Google Glass in order. The most important non-purchase factors that the next generation group as main users had were price, function, and design. Therefore, it is necessary to solve the problem.

In this study, a new type of the embedded column connection was proposed, and its flexural behavior was evaluated through a series of experimental study. Four full scale specimens for the proposed connections were constructed and tested. From the results, it was found that the flexural stiffness of the proposed connection was higher than that of the semi-rigid connection for all test specimens, and 200mm of embedment length was proper for the given test specimens in this study.

The purpose of this study is to propose structural technologies on the light-weight composite floor systems in the unit modular and to evaluate fire resistance of the composite floor through standard fire test. The result of an experiment, we know that the proposed floor satisfied in 1 hour fire resistance time.

This study aims at understanding of the importance of modeling boundary conditions for connections of modules in 12-story modular building. The peak roof drifts under fixed condition and pinned condition are compared at design intensity levels in this paper.

This paper is a aim to develop a connection modular-to-foundation that can be adapted using steel-frame middle & high-rise of the modular units. Analysis results, embedded column length is somewhat greater stiffness and strength were highly appreciated. Reduced embedded length even if the length of the base is not a problem for ensuring highly fixed.

In this paper, the dry solution for restraining the buckling failure of steel brace with the semicircle springs is presented. Finite element analysis shows that the effects of restraining the bucking of brace can be achieved if the structure of semicircle springs is designed appropriately.

In this Study, lateral load resistance system is proposed to apply 12 story modular buildings to which X and inverted-V bracing is applied. The purposed system is analytically evaluated to determine the feasibility. As results, the inverted-V bracing is best suited for core system of 12 story modular building.

To strengthen the competitiveness of the domestic precast concrete industry, any legal or institutional measures for a guarantee of quality and safety standards are required. So, the overseas cases for precast concrete certification program were investigated and analyzed to present the new certification program in Korea.

The purpose of this study is to develop structral technologies on the lightweight composite slab systems with sound reduction layers in the modular house. In this study, two kinds of slabs with minimum thickness was suggested reducing the floor impact sound. In order to evaluate the structural performance, the flexural strenth tests were carried out on the one-way full scale specimens. From the results of test, we know that the proposed slabs had ductile behavior and would be safe sufficiently.