• Journal of the Korean Data and Information Science Society
• /
• 제24권3호
• /
• pp.495-504
• /
• 2013

진화 알고리즘 계산 지능을 이용한 예측 방법이 다목적 최적화 문제에서 많이 이용되고 있고, 이러한 방법들은 많은 근사 파레토 최적해들을 좀 더 정확하게 생성하기 위해서 개선되고 있다. 본 논문은 다목적 최적화 문제에서 서포트 벡터기계를 이용하여 근사 파레토 프런티어를 찾는 방법을 제안한다. 또한 제안된 방법과 진화 알고리즘을 결합한 것이 파레토 프런티어를 더 잘 근사시킨다는 것과 두 개혹은 세 개의 목적함수를 가진 의사결정은 제안된 방법으로 파레토 프런티어를 시각화한 것에 근거하여 더 쉽게 수행된다는 것을 보인다. 마지막으로 몇 개의 수치예제를 통해 제안된 방법의 효율성에 대해 보일 것이다.

• 한국경제지리학회지
• /
• 제2권1_2호
• /
• pp.169-182
• /
• 1999

본 연구에서는 정보화에 따라 국토공간구조가 어떻게 변화할 것인가에 대하여 국토정책전문가, 정보화정책전문가, 그리고 인터넷이용자에 대해 실시한 설문조사의 결과를 정리하고 그 의미를 찾고자 한다. 종합적으로 볼 때 서울의 기능과 역할이 강화될 가능성은 여전히 남아있으며 정보화의 확산정도에 따라 인구분산 내지 집중의 반전을 어느 정도 가능할 것으로 보여진다. 대도시의 외연적 확산은 어느 정도 한계를 가질 것으로 전망되며 도시내부구조는 제한된 기능적 분화와 다중심지의 출현이 전망된다. 지역의 발전잠재력 실현과 관련한 정보학 정책의 추진 등을 고려할 때 정보화는 지역간 균형발전에 기여할 기회가 보다 나은 것으로 전망한다. 전반적으로 정보화의 영향에 대하여 국토전문가보다는 정보전문가가 긍정적인 효과(지방으로의 분산, 지역격차의 해소 등)를 전망하고 있다.

• 한국실내디자인학회논문집
• /
• 제4호
• /
• pp.45-52
• /
• 1995

This study is on investigation of sizes, functions and positions of storage space in the house, which is basically necessary for effective using of limit house space. The Storage spaces in Korean vernacular housings are intensively investigated to evaluate their usage and to ex-tend their utility for modern life. Data and materials on the storage spaces in typical houses were taken from the "NamSa Village" and Urban Single-Detached House provided by K.N.H.C. In order to get the fundamental materials, related references are widely investigated and interview and direct visiting have also been made. The results are obtained as follows. 1. There are many kinds of storage space in the rural detached house, however this space could approximately classified as five kinds. 2. The number of "BYUKJANG" and "BANCHIM" are more equipped in apartment houses rader than rural detached houses. 3. There are more kinds of storage space in the public detached houses rather than the public apartment houses. 4. In the apartment houses constructed by private companies, more storage space are generally equipped rather than public apartment houses. than public apartment houses.

• 전기학회논문지
• /
• 제62권12호
• /
• pp.1777-1783
• /
• 2013

This study aims to implement an instrumentation system measuring and analysing real-time data of information flow between respective subunits composing train control system as the performance evaluation method for wireless communication based urban railway train control system under development for a Korean model. It analyses system functional requirements regarding subsystems composing wireless communication based train control system and test items for functions presented in each specification and examines data and measurement point for measuring according to test items in order to implement an instrumentation system. And, it clearly defines requirements of an instrumentation system to avoid malfunction or error in operation of train control system. It reviews data processing method and display method for effective analysis of data flow between respective subunits with measured data, designs and makes an instrumentation system. Ultimately, it applies to a performance test of train control system and makes sure an instrumentation system in normal working order.

• 공학교육연구
• /
• 제19권4호
• /
• pp.35-46
• /
• 2016

With the emphasis on core competencies, the University of Seoul has exerted efforts to reflect the importance of core competencies in university curricula. The main assessment tool used in Korea is the Korea Collegiate Essential Skills Assessment (K-CESA), developed by the Korea Research Institute for Vocational Education and Training (KRIVET). This study examined whether core competencies measured using K-CESA are valid as a tool for assessing educational achievements among college students, and analyzed the correlation between K-CESA scores and course grades. The analysis was performed on approximately 204 engineering students at the University of Seoul. According to the correlation analysis between core competencies and courses, MSC courses were shown to be related to the resource and through information use competency and higher order thinking competency. Through the Analysis of Variance, students in the accreditation programs and students living in urban area showed higher competency scores. In the multiple regression, it was shown that Accreditation and MSC courses grades were the important variables to predict the competency of the students. Based on these findings, we confirmed that the K-CESA tool has a certain level of correlation with academic performance and that it functions as one of several ways to evaluate the program outcomes of engineering education accreditation.

• 한국도로학회논문집
• /
• 제17권5호
• /
• pp.93-103
• /
• 2015

PURPOSES : The purpose of this study is to present a linear programing optimization model for the design of lane-based lane-uses and signal timings for an isolated intersection. METHODS: For the optimization model, a set of constraints for lane-uses and signal settings are identified to ensure feasibility and safety of traffic flow. Three types of objective functions are introduced for optimizing lane-uses and signal operation, including 1) flow ratio minimization of a dual-ring signal control system, 2) cycle length minimization, and 3) capacity maximization. RESULTS : The three types of model were evaluated in terms of minimizing delay time. From the experimental results, the flow ratio minimization model proved to be more effective in reducing delay time than cycle length minimization and capacity maximization models and provided reasonable cycle lengths located between those of other two models. CONCLUSIONS : It was concluded that the flow ratio minimization objective function is the proper one to implement for lane-uses and signal settings optimization to reduce delay time for signalized intersections.

• 토지주택연구
• /
• 제11권2호
• /
• pp.15-24
• /
• 2020

In recent years, market access is expected to become more important in logistics location selection. In addition, it is necessary to support logistics functions for small and medium-sized enterprises. In this study, we propose a location suitability evaluation system for public rental logistics spaces. The location selection and evaluation system of the public rental logistics space proposed in this study is composed of large (5), medium (10), and small (20) indicators. The 1^st class were five factors: market factors, economic factors, transportation factors, site factors, policy and social factors, and the 2^nd classifications per the 1^st class, and the 3^rd class for each 2^nd class. After deriving the relative importance of each indicator through AHP for experts, it was verified by utilizing GIS analysis for virtual candidates in the metropolitan area. As a result of the trial application, it was evaluated that it could be applied with realistic results. In addition, it was confirmed that it is possible to apply evaluation indicators using spatial data constructed in Korea, and to use the evaluation indicators, it is necessary to perform various spatial analysis and processing tasks on raw data.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2009년도 춘계학술대회 논문집
• /
• pp.1489-1497
• /
• 2009

The rectifier for Electric railway is one of the most important facilities in DC urban railway which converts power from KEPCO(AC 22.9kV) to the electric mil car(DC 1.5kV), therefore it should be managed as the best condition for the drive. There are several things to cause performance degradation and deterioration of parts such as pollutants occurred by it established under the ground such as dust or foreign substances, rapid changes of driving current, and pyrogen which put the rectifier for Electric railway in malfunction. On the flow of time, the rectifier for Electric railway is causing a malfunction or failure which drive electric rail car in operations as well as loss of life. In this research we try to find the way of removing the various components of mal-functions in the performance of the rectifier for Electric railway by Over-Haul and reform itself, which gives us to get the chance investment of the reduction, the reliability of power supply to the electric rail car.

• 국제초고층학회논문집
• /
• 제9권1호
• /
• pp.53-60
• /
• 2020

"A practical architect might not unnaturally conceive the idea of erecting a vast edifice whose frame should be entirely of iron, and clothing the frame--preserving it--by means of a casing of stone…that shell must be regarded only as an envelope, having no function other than supporting itself..." --Viollet-le-Duc, 1868. Viollet-le-Duc's recipe for an encased iron frame foresaw the separation of structural and enclosing functions into discrete systems. This separation is an essential characteristic of skyscrapers today, but at the time of his writing cast iron's brittle nature meant that iron frames could not, on their own, resist lateral forces in tall structures. Instead, tall buildings had to be braced with masonry shear walls, which often also served as environmental enclosure. The commercial availability of steel after the 1880s allowed for self-braced metal frames while parallel advances in glass and terra cotta allowed exterior walls to achieve vanishingly thin proportions. Two Chicago buildings by D.H. Burnham & Co. were the first to match a frame "entirely of iron" with an "envelope" supporting only itself. The Reliance Building (1895) was the first of these, but the Fisher Building (1896) more fully exploited this new constructive typology, eschewing brick entirely, to become the first "building without walls," a break with millennia of tall construction reliant upon masonry

• Animal cells and systems
• /
• 제12권4호
• /
• pp.219-230
• /
• 2008

We are reporting the expression patterns and possible biological functions of a novel Kinesin-like protein, Surhe, in the zebrafish. Homology studies of derived amino acid sequences suggest that Surhe has an amino-terminal kinesin motor domain that is similar to that of the emerging MKLP-1 subfamily [Kim and Endow, 2000] and two coiledcoil domains in a central region. Cellular localization studies in mammalian cells revealed that Surhe protein is located in cytoplasm, suggesting that Surhe may be involved in the intracellular transport. During the developmental process, surhe transcripts are highly expressed in early embryonic stages. Overexpression of the dominant negative form of Surhe significantly down-regulates the dorsalization markers, such as goosecoid, bozozok, and chordin. Taken together, we postulate that Surhe may be involved in dorsalization process as a motor molecule.