• 한국문헌정보학회지
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• 제54권4호
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• pp.123-146
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• 2020

본 연구에서는 2005년부터 2020년까지 약 15년간의 문헌정보학과 석·박사교과과정의 변화를 3년~4년 단위로 분석하였다. 연구 결과를 바탕으로 문헌정보학과 대학원 교과과정을 체계적으로 연구할 수 있는 기초적인 자료를 제공하고, 교과과정의 흐름을 읽고, 이를 기반으로 세계적인 경쟁력을 갖춘 정보전문가를 양성하는 데 활용되도록 하고자 하였다. 연구 결과, 첫째, 2017년과 2020년의 교과목 수의 변동비율을 비교해 보았을 때, 총 3.70%가 감소하였고, 유일하게 증가율을 보인 분야는 기록관리학(3.33%)이었다. 서지학(-11.65%), 정보학(-4.89%), 도서관·정보센터 경영학(-3.62%), 문헌정보학 일반(-3.13%), 정보조사제공학(-4.10%)은 감소한 것으로 나타났으며, 정보조직학은 교과목 수의 변화는 없는 것으로 나타났다. 둘째, 2020년에는 정보학이 25.15%로 가장 높은 비율로 개설되어 있고, 도서관·정보센터경영학(21.30%), 정보조사제공학(15.05%), 문헌정보학일반(12.35%), 정보조직학(11.27%), 서지학(7.95%), 기록관리학(6.94%) 순으로 개설된 것으로 나타났다.

• Structural Engineering and Mechanics
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• 제49권5호
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• pp.631-644
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• 2014

Seismic assessment and retrofitting of existing structure is a complicated work that typically requires more sophisticated analyses than performing a new design. Before the implementation of a Code for seismic design of buildings (GBJ 11-89), not enough attention has been paid on seismic performance of structures and a great part of the existing reinforced concrete structures built in China have been poorly designed according to the new version of the same code (GB 50011-2010). This paper presents a case study of seismic assessment of a non-seismically designed reinforced concrete building in China. The structural responses are evaluated using the nonlinear static procedure (the so-called pushover analysis), which requires its introduction within a process that allows the estimation of the demand, against which the capacity is then compared with. The capacity of all structural members can be determined following the design code. Based on the structural performance, suitable retrofitting strategies are selected and implemented to the existing system. The retrofitted structure is analyzed again to check the effectiveness of the rehabilitation. Different types of retrofitting strategy are discussed and classified according to their complexity and benefits. Finally, a proper intervention methodology is utilized to upgrade this typical low-rise non-ductile building.

• Journal of Ecology and Environment
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• 제44권1호
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• pp.41-44
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• 2020

The Chinese many-toothed snake (Sibynophis chinensis) is an endangered species in South Korea. To determine its reproductive activity, here we captured a gravid S. chinensis from Mulyeongari Oreum Wetland Conservation Area, Jeju Island, on May 27, 2018, and reared it at Animal Taxonomy and Morphology Laboratory, Jeju National University, South Korea. The snake oviposited a clutch of six eggs between June 12 and 20, 2018, with an average size of 24.86 ± 1.36 mm in length and 9.86 ± 0.49 mm in width, which were artificially incubated at a constant temperature of 27 ℃. After incubating for 34-41 days, five of these six eggs successfully hatched. Average snoutvent length (SVL), tail length (TL), and body weight (BW) of hatchlings were 136.5 ± 5.17 mm, 47.76 ± 2.80 mm, and 1.66 ± 0.12 g, respectively. This study observed the reproductive activity of S. chinensis and characterized its eggs and hatchlings for the first time, providing valuable information for the long-term conservation plan of S. chinensis in South Korea.

• 한국생산제조학회지
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• 제26권2호
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• pp.223-229
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• 2017

Recently, robotic bin-picking tasks have drawn considerable attention, because flexibility is required in robotic assembly tasks. Generally, stereo camera systems have been used widely for robotic bin-picking, but these have two limitations: First, computational burden for solving correspondence problem on stereo images increases calculation time. Second, errors in image processing and camera calibration reduce accuracy. Moreover, the errors in robot kinematic parameters directly affect robot gripping. In this paper, we propose a method of correcting the bin-picking error by using trinocular vision system which consists of two stereo cameras andone hand-eye camera. First, the two stereo cameras, with wide viewing angle, measure object's pose roughly. Then, the 3rd hand-eye camera approaches the object, and corrects the previous measurement of the stereo camera system. Experimental results show usefulness of the proposed method.

• 한국생산제조학회지
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• 제26권2호
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• pp.230-237
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• 2017

Various drones have extended application area very fast. In this paper, we define two contradictions in designing a portable-size drone by using TRIZ technique. The first is a physical contradiction between high rigidity and good portability, and the second is a technical contradiction between high stability and good portability. Through TRIZ technique, six design principles, which guide direction for optimal design, were driven. Consequently, an umbrella mechanism and design criteria were proposed for a portable-size drone. Detail design is verified through finite element method. Test results for the portable-size prototype drone show good performance, and prove its usefulness to be equivalent to a general full-size drone.

• Asia Pacific Journal of Business Review
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• 제1권2호
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• pp.89-105
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• 2017

In this era of information and communication technology (ICT), efficient and cost effective public services delivery had become highly expected by the citizen in every country. In developed countries, digitally enabled public services were established in recent years while the developing countries like Bangladesh were trying to establish this advancement. The UNDP, USAID and the Government of Bangladesh launched the Access to Information (A2I) programme to improve the services delivery to reach at the doorsteps of citizen. Under this umbrella, Union Digital Centers (UDCs) were launched in 2009 at every Union of Bangladesh to reduce the "Digital Divide" in public service delivery. Thus, it had become the concern nowadays to make this initiative sustainable for a long run, this study focused to find out some key factor to be considered for making them sustainable in Bangladesh. It explored the previous researches related to these centers and same categories of institutions in other countries where the researchers argued about some issues in different aspects. Based on their findings and discussions, this study tried to analyze the key issues influencing the sustainability factors. To analyze the factors for sustainability, it addressed the financial, investment, business development and publicity, competencies of entrepreneurs, community acceptance and gender issues, institutionalization and physical infrastructure concerned with UDCs. The Government agencies, policy makers, researchers could be consider those recommendations for developing the strategies for sustaining the operations of UDCs in Bangladesh.

• 한국문헌정보학회지
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• 제16권
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• pp.33-53
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• 1989

The purpose of this paper is to forecast the future of library education in Korea. Toward this purpose, first, the historical events of library education in the United States of America and in the United Kingdom are introduced along with the IFLA Standards for Library Schools and the Unesco's General Information Programme. Secondly, the theoretical foundations of library education are extracted from the events. Thirdly, the factors influencing library education as well as library developments are identified, and, finally, the prospects of library education are forecasted in the light of the various factors in the Korean society and the theoretical foundations. The prospects are forecasted as follows: 1. The education for information science will be incorporated in library education. 2. The number of courses related to library services and uses will be increased. 3. The students should be provided with enough hands-on experiences to be familiar with new information technology. 4. The cooperation between library schools and libraries will be reinforced. 5. The departments of library science will cooperate with other departments in the universities in order to utilize the expertise and facilities. 6. The education of graduate schools will be specialized to produce subject specialist librarians and the undergraduate education will produce public and school librarians. 7. Opportunities for continuing education will be provided more and librarians encouraged to participate in those activities. 8. Library association should actively be involved in library education as a provider of continuing education or as a liaison between library schools and libraries. 9. The courses of foundations including library history, library research and preservation of culture will never be neglected.

• Tribology and Lubricants
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• 제33권4호
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• pp.127-133
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• 2017

In order to characterize the adhesive properties and failure mechanisms of diamond-like carbon (DLC) films of two different thicknesses (130 nm and $1.2{\mu}m$), deposited by plasma-enhanced chemical vapor deposition on a Si substrate, scratch testing with a micro-indenter ($12.5{\mu}m$ tip radius) was performed under a linearly increasing load. These scratch tests were conducted under the same test conditions for both films. The critical load of each film was estimated from the scratch test results, based on a sharp increase in the coefficient of friction and a clear distinction of failure modes. The critical load was the basis for evaluating the adhesion strength of the films, and the $1.2{\mu}m-thick$ DLC film had superior adhesion strength. For better understanding of the failure modes, the following analyses were conducted: friction behavior and scratch tracks analysis using scanning electron microscopy, energy-dispersive spectroscopy, and 3-D profilometry. The scratch test results showed that failure modes were related to the thickness of the films. The 130 nm-thick DLC film underwent cohesive failure modes (cracks and chipping) before reaching to a gross failure stage. On the other hand, the thicker DLC film ($1.2{\mu}m-thick$) did not exhibit micro cracks before a sudden gross failure of the film together with the evidence of cracking and chipping of the Si substrate.

• 환경위생공학
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• 제19권4호
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• pp.34-47
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• 2004

Although Environmental Impact Assessment(EIA) in Korea has been improved markedly over the past two decades, by enlarging the range of projects for assessment, instituting pub lic participation and environmental monitoring, and similar measures, it remains deficient in its coverage of human health in Environmental Impact Statements(EISs). Health Impact Assessment(HIA) can supply the necessary correctives. HIA is a combination of procedures, methods and tools by which a policy, programme, projects or legislative procedure may be judged for its potential effects on the health of a population, and the distribution of these effects within it. The principle of health protection is, however, established as a primary concern in EIA processes, in practice health is scarcely mentioned or the discussion is limited to a description of effects through the biophysical environment. The whole range of possible effects on health, including those mediated by socio-economic factors is often ignored, and no effective mechanism are in place to successfully incorporating health criteria and expertise into environmental, assessment(EA) that include ElA, SEA. These are foremost among the current issues facing EIA in Korea.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2013년도 춘계학술대회
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• pp.299-300
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• 2013

본 연구에서는 선박의 정박과정 중 거동을 분석하기 위하여 저속과 고속의 전진속도에 쓰이는 서로 다른 수학 모델을 비교하며 시간변위 시뮬레이션이 수행되었고 그 결과가 제시되었다. 시뮬레이션 프로그램 개발의 첫 번째 단계로 선박의 속도와 타각 제어를 위하여 일반적인 PD (Proportional Derivative) 제어기가 사용되었으며 시뮬레이션 모델로서 탱커가 사용되었다. 본 연구는 선박의 정박과정을 위한 효과적인 시간변위 시뮬레이션 프로그램을 개발하기 위하여 정박 시뮬레이션에서의 비교 분석 결과를 제시한다.