• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.2042-2047
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• 2005

Many service robots which is interacting with human at home and in buildings have been developed. Few of them are shown in of the United States and of Japan. These robots are supposed to have a powerful indoor navigation performance in places where human beings live and work. The overall capability of service robots to move around in this environment is called environment correspondence, in which localization problem to find the accurate position and orientation is the most critical problem. While users set up a proper or a best environment for industrial robots, but for services robots at home and in buildings, it is very difficult to change the environment for robots. The expanded workspace due to mobility is difficult to be covered by means of those used for industrial robots because the cost increases and human beings do not want their environment to be changed for robots. This fact has made many researchers study efficient and effective environment correspondence problems. Among these problems, localization is the most difficult. Goal of localization study includes (1) Accurate detection of position and orientation (2) Minimum cost of the additional devices (3) Minimum change of human environment. In this study, as a solution of the above, we propose "Artificial Stars" which are attached on room ceiling as landmarks. In addition, we solve an adoption problem raised when a robot is delivered to a customer site and before it can perform its full navigation capability. We call this as "Initialization Problem" of service robots. We solve the initialization problem for both cases of environment with the map and without map. The proposed system is experimented and has shown how well it handles the initialization problem.

• 대한치과교정학회지
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• 제42권4호
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• pp.190-200
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• 2012

Objective: The displacement of the hyoid bone (HB) is a critical biomechanical component of the swallowing function. The aim of this study was to evaluate the swallowing-induced vertical and horizontal displacements of the HB in subjects with 2 different magnitudes of skeletal Class III malocclusion, by means of real-time, balanced turbo-field-echo (B-TFE) cine-magnetic resonance imaging. Methods: The study population comprised 19 patients with mild skeletal Class III malocclusion, 16 with severe skeletal Class III malocclusion, and 20 with a skeletal Class I relationship. Before the commencement of the study, all subjects underwent cephalometric analysis to identify the nature of skeletal malformations. B-TFE images were obtained for the 4 consecutive stages of deglutition as each patient swallowed 10 mL of water, and the vertical and horizontal displacements of the HB were measured at each stage. Results: At all stages of swallowing, the vertical position of the HB in the severe Class III malocclusion group was significantly lower than those in the mild Class III and Class I malocclusion groups. Similarly, the horizontal displacement of the HB was found to be significantly associated with the severity of malocclusion, i.e., the degree of Class III malocclusion, while the amount of anterior displacement of the HB decreased with an increase in the severity of the Class III deformity. Conclusions: Our findings indicate the existence of a relationship between the magnitude of Class III malocclusion and HB displacement during swallowing.

• 대한화학회지
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• 제41권6호
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• pp.284-291
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• 1997

양이온성 계면활성제인 Cetylpyridinium Chloride(CPC)와 비이온성 계면활성제인 Triton X-100(TX-100)의 혼합계면활성제가 n-알코올(메탄올, 에탄올, 1-프로판올, 1-부탄올 및 1-펜탄올) 수용액에서 나타내는 임계미셀농도값($CMC^*$)을 25$^{\circ}C$에서 UV 분광광도법으로 측정하였다. 이들 $CMC^*$ 값들로부터 여러 가지 열역학 함수값들을 유사상태분리모델(pseudo-phase separation model)을 이용한 식에 의해 계산하였으며 그 값들을 상호 비교하였다. 그 결과 n-알코올들을 첨가한 CPC/TX-100 혼합계면활성제의 미셀화는 비이상적 혼합미셀모델과 잘 일치하였으며, 이상적 혼합미셀모델과는 음의 벗어남을 보였다.

• 농촌지도와개발
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• 제6권2호
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• pp.119-139
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• 1999

While many factors could be mentioned to the rapid development of Israel for the last 50 years, it could not be overemphasized the critical role of large scale influx of Jewish immigrants not only in the process of achieving national independence but to the development of modernization. It is well known that mass influx of people in a relatively short period of time may cause serious social problems in various areas such as housing shortage, increasing crime rate, etc. Nontheless, Israel is avidly recognized as a country that successfully overcome such problems by means of creating systematic social integration systems and practicing various adaptation assistance programs for new immigrants. This study was concerned with such a successful social adaptation-assistance programs of Israel for large scale immigrants those who came from all over the world with different socio-economic background. In order to answer the research questions, following two areas of topics were researcher`s main concern. First, organizational structure and functions of the Ministry of Immigrant Absorption of Israel and Jewish Agency that are primarily responsible for the economic, occupational, social, and cultural integration of immigrants during their first three years (five years for housing-aid) in Israel. Second practical adaptation assistance programs such as direct absorption basket, Ulpan, Aliyah 2000, special projects of Keren Hayesod and two of Aliyah Absorption Centers are examined. And lastly some of implications and suggestions are provided in the conclusion section in relation with social adaptation-assistance and integration of reunified Korea, especially from the point of North Koreans.

• 건축역사연구
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• 제13권2호
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• pp.39-55
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• 2004

In terms of the way we perceive the world, the history of human beings might be said to be a history of two incompatible forces -'science' and 'myth.' Until today, both indispensable aspects have made human existence possible and characterized human culture. Nonetheless, an essential definition of myth has never been clearly explained. What is the general philosophical thought about myth? Current well known interpretations are so called Enlightenment and Romanticism of myth, which both has same criticism that they has not generally considered myth in terms of its technical function or specified contents. One who overcomes the limit of two current extreme beliefs on myth and also who concerned more with the ultimate origin of myth and its relation to the structure of poetry than the source of its vital accomplishments is philosopher Hans Blumenberg. For him myth is an artificial means and an answers to overcome the 'absolutism of reality.' On this point, the research concerns basically two issues. One is to investigate the functional and structural characters of myth through philosopher Hans Blumenberg's anthropological reflections. The other is to analyze architect Tadao Ando's works and thinking. The intention of the paper is not only to explore the relationship between philosophical theory of Blumenberg and Ando's architectural works, but also to suggest a new critical understanding on architecture from mythological point of view. I also expect that this research will suggests a concrete theoretical idea for constructing and construing artistic form and cultural space.

• KIEAE Journal
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• 제16권3호
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• pp.121-128
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• 2016

Purpose: The vacuum glazing should constantly retain the gap in vacuum state to maintain high thermal performance. To do so, pillars are used to prevent the glazing from clinging to each other by the atmospheric pressure and therefore surface of the vacuum glazing is consistently affected by residual stress. The vacuum glazing could be applied to curtain wall systems at spandrel area to fulfill a rigorous domestic standard on U-value of the external wall. However, this can lead to high glazing temperature increase by heat concentration at a back panel and finally thermal stress breakage. This study experimentally determined weakness of the vacuum glazing systems on the thermal stress breakage and investigated effect of the residual stress. Method: The experiment first built two scale-down mock-up facilities that replicate the spandrel area in curtain wall, and then installed single low-e glass and vacuum glazing respectively. The two mock-up facilities were exposed to outside to induce the thermal stress breakage. Result: The experiment showed that the temperature occurred the thermal stress breakage was $114.4^{\circ}C$ for the single low-e glass and $118.9^{\circ}C$ for the vacuum glazing respectively. The result also showed the vacuum glazing reached the critical point earlier than the single low-e glass, which means that the vacuum glazing has high potential to occur the thermal shock breakage. In addition, the small temperature difference between two glazing indicates that the residual stress scarcely affects breakage of the vacuum glazing.

• 융합보안논문지
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• 제6권4호
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• pp.67-73
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• 2006

실시간 사이버위협에서 정형화 방법은 각 보안장비의 이벤트를 실시간 분석하여 인터넷 웜, 바이러스, 해킹 등의 사이버공격에 대한 네트워크 이상 징후를 임계치와 상관관계를 틀 통하여 탐지하고, 동 평가결과의 통계분석을 통해 정형화 방안 기능을 부여하고 실효성 있는 사이버공격대응시스템을 구축하는데 있다. 본 논문은 우선 위협지표 산출과 동 지표의 합산을 통한 위협평가 및 조기 경보 과정의 패키지화로 만들고, 사이버 위협 지표 계산의 기준을 설정한다. 특히 보안사고 발생 시 각 보안장비의 이벤트와 트래픽 양에 대한 정의 및 데이터베이스 입력 방법을 구체화하여 실시간 대응 및 조기예경보체계의 초석이 가능한 정형화 방안을 제시한다. 분석을 위해 축적한 90일간의 데이터 임계치 설정작업을 통해 보다 정확한 적용 값을 계산한다. 산출한 값을 토대로 정형화가 가능한 보안이벤트 정보를 표준데이터로 적용, 각 보안장비 및 HoneyNet 시스템, 기타 취약정보 등과의 상관관계를 분석하여 보안이벤트 표준지수를 산출한다.

• Biotechnology and Bioprocess Engineering:BBE
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• 제11권3호
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• pp.262-267
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• 2006

The objective of this study was to develop new self-organized nanogels as a means of drug delivery in patients with cancer. Pullulan (PUL) and deoxycholic acid (DOCA) were conjugated through an ester linkage between the hydroxyl group in PUL and the carboxyl group in DOCA. Three types of PUL/DOCA conjugates were obtained, differing in the number of DOCA substitutions (DS; 5, 8, or 11) per 100 PUL anhydroglucose units. The physicochemical properties of the resulting nanogels were characterized by dynamic light scattering, transmission electron microscopy, and fluorescence spectroscopy. The mean diameter of DS 11 was the smallest (approx. 100 nm), and the size distribution was unimodal. To determine the organizing behavior of these conjugates, we calculated their critical aggregation concentrations (CACs) in a 0.01-M phosphate buffered saline solution. They were $10.5{\times}10^{-4}mg/mL,\;7.2{\times}10^{-4} mg/mL,\;and\;5.6{\times}10^{-4} mg/mL$ for DS 5, 8, and 11, respectively. This indicates that DOCA can serve as a hydrophobic moiety to create self-organized nanogels. To monitor the drug-releasing behavior of these nanogels, we loaded doxorubicin (DOX) onto the conjugates. The DOX-loading efficiency increased with the degree of DOCA substitution. The release rates of DOX from PUL/DOCA nanogels varied inversely with the DS. We concluded that the PUL/DOCA nanogel has some potential for use as an anticancer drug carrier because of its low CAC and satisfactory drug-loading capacity.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 1993년도 춘계학술대회 논문집
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• pp.22-27
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• 1993

we prepared 70K new BiPbAgSrCaCuO superconductor used diffusion of dual layer which composed of SrCaCuO and BiPbAgCuO compound. This method is used permeation and diffusion on partial melting point of BiPbAgCuO compound. Samples were analyzed by means of X-ray diffraction analysis, Thermal analysis, critical temperature and scanning electron microscopy. It was found that the best results were obtained for spread volume (A:B=1:0.6) and sintring time 210hours.

• 한국의상디자인학회지
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• 제16권3호
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• pp.49-60
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• 2014

Kidult trend has continued to influence diverse areas such as fashion, advertisement, interior, cosmetics, and so on in the modern age. As combined word of kid and adult, a Kidult is an adult who participates in youth culture and activities traditionally intended for children. This study intends to check out how the phenomenon of Kidult trend is exhibited in fashion area as well as to develop fashion design for kidult inspired by the images shown in an amusement park. The method of study is two-fold. One is a critical review of previous literature and the other is a development of fashion design based on it. The literature study is referred to books of fashion, books of trend and data collected through internet, and design results are presented using mainly quilting and knitting techniques. The results are as follows. Firstly, a kidult fashion was expressed playful and interesting by the sensibilities of kidults that hope to return to the innocence of childhood reminiscing about the good old days. Secondly, a characteristic of the fashion design for kidults is to display the innovative and diverse design with exaggerated expression and a broad spectrum of colors. One's own unique style can be developed through memories and fantasies from fairy tales in childhood. Thirdly, themes of amusement parks were an appropriate means to show the characteristics of the kidults. A variety of characters and buildings and shapes of the rides in the amusement parks were useful for the design motive targeting for the customers with the kidult characteristics and images of fashion and accessories design. Fourthly, inspired by the amusement parks, the work in this research has presented the new kidult styles designed as various forms combining inner feelings that seek distinctive and unique styles and amusement features.