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김현수 ( Hyun Su Kim ), 김유근 ( Yoo Keun Kim ), 송상근 ( Sang Keun Song ), 정주희 ( Ju Hee Jeong ), 손고은 ( Go Eun Son ), 김동식 ( Dong Sik Kim ), 김형섭 ( Hyung Sop Kim ), 김지원 ( Ji Won Kim ) 한국환경과학회 2013 한국환경과학회지 Vol.22 No.4
In this study, the use survey of domestic and international weather information on coastal regions and the demand survey (e.g. general and in-depth surveys) for customer needs with coastal industries were carried out to design customized coastal weather contents. The general demand survey showed that most of the customers working in the coastal industries were interested in a short-term forecast, such as a general weather outlook (approximately 29% of the total respondents) and typhoon information (19%), and they preferred to be given the forecast information from new media such as the internet web-pages (36%) and mobile utilities (23%) rather than old media such as TV (16%) and radio (11%). In addition, only 31% of the total respondents were found to be satisfied with the use of the current coastal weather service. This low percentage might mainly be a result of lack of information accuracy (about 64%) and diversity (28%). From in-depth survey with site visiting, the need of coastal weather contents, such as weather elements, data form, a tool of communication, and forecast interval, differed with the working stages in three coastal industries (e.g. shipbuilding, maritime trade, and passenger transport industries).
정밀한 공정을 요구하는 반도체 및 TFT-LCD와 같은 첨단 기술산업 공장의 미진동 문제는 제품의 성능에 영향을 주는 주요한 인자로서 정밀기기 및 부품의 제조공정에 있어서 중요시 되어왔다. 본 논문에서는 이러한 첨단시설물의 미진동 문제를 해결하기 위하여 기초면진시스템의 미진동제어성능을 검토하였다. 이를 위하여, 기차에서 유발되는 인공지반운동을 생성하여 시간이력해석을 수행하였고 3층 예제구조물을 사용하였다. 수치해석을 통하여 수동 기초면진 및 스마트 면진시스템의 미진동제어성능을 고정기초구조물과 비교하였다. 그 결과 스마트 면진시스템이 미진동제어에 있어서 우수한 제어성능을 나타내는 것을 확인하였다. Microvibration problem of high-technology facilities, such as semi-conductor plants and TFT-LCD plants, has been considered as important factors that affects the performance of products and thus it is regarded as important in facilities with high precision equipments. In this paper, various base isolation control systems are used to investigate their microvibration control performance. To this end, train-induced ground acceleration is used for time history analysis and three-story example building structure is employed. Microvibration control performance of passive and smart base isolation systems have been investigated in this study. Based on numerical simulation results, it has been verified that smart base isolation system can control microvibration of a high-technology facility subjected to train-induced excitation.
본 연구에서는 스카이브릿지 설치위치 및 연결된 구조물의 고유진동주기 차이에 따른 전체 구조물의 진동제어 효과를 분석하였다. 이를 위하여 스카이브릿지로 연결된 40층과 50층 구조물을 예제 구조물로 사용하였고, 등가모형화기법을 이용하여 예제 모델을 구성하였다. El Centro 및 Taft 지진을 사용하여 경계비선형 시간이력해석을 수행하였고 구조물의 동적거동과 진동제어 효과를 분석 하였다. 해석결과 변위응답은 스카이브릿지를 상부층에 설치할수록 더 효과적으로 제어할 수 있었고 가속도응답은 구조물의 중간층 부근에 설치할 때 더 효과적으로 저감시킬 수 있었다. In this study, the vibration control effect according to the installation location of the sky-bridge and the difference of natural periods of the connected buildings has been investigated. To this end, 40-story and 50-story building structures connected by a sky-bridge were used as example structures and the equivalent modeling method was used. Boundary nonlinear time history analyses were performed using EI Centro and Taft earthquakes to investigate the dynamic behavior of the example structures and vibration control effect of the sky-bridge. Based on numerical results, it has been shown that displacement responses can be effectively controlled as the installation floor of the sky-bridge increases and acceleration responses can be effectively reduced when the sky-bridge is installed on the mid-stories of the example building.
In this study, fuzzy hybrid control technique was evaluated for the suppression of wind-induced motion of a tall building. A semi-active tuned mass damper (STMD) was used as a control device. Usually, skyhook controller can effectively reduce TMD motion and groundhook controller shows good control performance for the reduction of building responses. In this study, fuzzy logic controller was introduced to appropriately adjusting skyhook and groundhook controllers. A 76-story concrete office tower was used as an example structure for the response control of a wind-excited tall building. It is a slender benchmark building 306m tall with a height to width ratio of 7.3. The numerical studies show that the control effectiveness of a STMD is significantly superior to that of the conventional passive TMD. It is also shown that fuzzy hybrid controller can effectively adjust sky-ground hook control algorithm and reduce both responses of TMD and building.
본 연구에서는 sky-bridge로 연결된 고층건물의 진동제어성능을 검토하여 보았다. Sky-bridge를 이용한 진동제어의 원리는 서로 다른 동적특성을 가진 구조물이 sky-bridge를 통하여 제어력을 발휘함으로써 전체 시스템의 응답을 줄이는 것이다. 본 연구에서는 실제 건설 중인 sky-bridge로 연결된 고층건물(49층 및 42층)을 대상으로 구조물의 변위, 가속도 및 베어링반력, sky-bridge의 응력 등을 해석적인 방법으로 검토하였다. 이를 위하여 역사지진, 인공지진 및 풍동 실험을 통해서 얻은 풍하중 시간이력을 사용하였다. 해석결과 sky-bridge를 사용하여 고층건물의 풍응답 및 지진응답을 효과적으로 줄일 수 있는 것을 확인하였다. In this study, the vibration control performance of high-rise building structures connected by a sky-bridge has been investigated. The philosophy of vibration control using sky-bridges is to allow structures with different dynamic characteristics to exert control forces upon one another through sky-bridges to reduce the overall responses of the system. The the high-rise building structure connected by sky-bridge with 49 and 42 stories was used in this study to investigate the displacement, acceleration, reaction of bearings and stress of sky-bridge by analytical methods. To this end, historical earthquakes, an artificial earthquake and wind force time histories obtained from wind tunnel tests were used. Based on the analytial results, the use of sky-bridge can be effective in reducing the structural responses of high-rise buildings against wind and seismic loads.
It has been reported that natural dyeing is impossible without pre-treatment with metal mordanting agents. However, pre-treatment with chitosan, which has high affinity to natural dyes, could result in an excellent dyeing with various natural dyes. In this study, three treatment methods were employed; 1) Using PET without any pre-treatment (Method 1) 2) Using PET with chitosan acid solution pre-treatment (Method 2) 3) Using PET with chitosan pre-treatment and subsequent crosslinking using citric acid (Method 3) Method 2 and 3 enhanced the Cochineal dyeability remarkably compared to Mehod 1. Washfastness was also enhanced, and moisture content, static property, abrasion resistance, and fabric hand changes were investigated.
이 논문은 不死의 상징으로 언급되는 神仙의 비행 관념이 오늘날 에도 전통으로 계승되는 동양적 사유의 산물이자 인간이 그 자체로 날 수 있다는 신념을 드러내고 있는가의 여부와 사상 변천 등에 따 라 비행 가능의 근거 또한 다르게 제시되고 있는가를 밝히고자 하였다. 이를 위해 원자론적 세계관에 토대를 둔 서양적 사유에서는 인간 이 그 자체로 날 수 없다는 신념을 드러내고 있음을 비교하여 고찰 하고 ‘神仙'의 원 의를 검토하며 전적의 내용 분류를 통해 신선의 비 행과 관련한 원형을 제시할 수 있었다. 이를 통해 신선이 학을 타고 날거나 날개 옷을 입고 난다는 일반적 이해의 잘못을 바로잡고 오늘 날 동양적 관점에서 묘사된 영화 미디어와의 차이를 지적함으로써 원형을 되살릴 수 있는 실마리를 제공하고자 하였다. The purpose of this article is to discuss issue relating to the flight of Immortals. In a general way, we think the immortality which is the symbol of immortals. But according to shuowen(說文) etc., Immortals have the characteristics not only immortality but also flight. The Western ideas is based on the atomic world-view. And a human being has differs from another being. Because they regard as only mankind which has the human nature. So they have holding the faith of a human being which is not immortal and not flying high in the sky. On the contrary, the East ideas is based on the organic world-view. And a human being has not differs from another being. Because they consider every beings in connection with each other as qi(氣). So they have holding the faith of Taoist hermit which is immortal and flying high in the sky. But according to many classical books, it isn`t seen Immortals does not only rides on crane and but also puts on flying garment in the original model.
The purpose of this study recognize effecting of participation in health improvement programs against health improvement lifestyle and successful aging. Health improvement programs developed by Walker, Sechrist & Pender (1987) which are a questionnaire to the Yonsei University, Center for Health Promotion (2006) used the tool in analysis was based on successful aging Dong bae Kim(2008), based on a tool developed to target the Korean. Elderly for the purposes of this study, modify, supplement use, and then the 79 people targeted health improvement program participants and successful aging, lifestyle the difference is aimed. And survey data using the program SPSS 19.0 for Window analytical purposes was based on the computational processing. General characteristics of the subjects to assess the frequency analysis was carry out, the measurement tool for verification of the validity and reliability, exploratory factor analysis and Cronbach's coefficient for the validation of the reliability was calculated. The health promotion program participation before and after the wellness lifestyle and successful aging for verification of the differences were analyzed by paired t-test and analysis of data related to these methods, the following conclusion was obtained. Firstly, according to the health improvement before and after participation in the program, depending on the health effects of lifestyle stress (social and psychological analysis of perception, self-satisfaction, medical care, health care, regular physical activity, diet, self-management had a positive effectiveness. Secondly, the health promotion program participation before and after the successful aging, according to the analysis of the effect on family life satisfaction, self-completion-oriented, autonomous life, active life, participating accommodate others, showed positive effects in health promotion.