• Computers and Concrete
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• 제16권3호
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• pp.357-380
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• 2015

In this study, a simple indeterminate strut-tie model which reflects complicated characteristics of the ultimate structural behavior of continuous reinforced concrete deep beams was proposed. In addition, the load distribution ratio, defined as the fraction of applied load transferred by a vertical tie of truss load transfer mechanism, was proposed to help structural designers perform the analysis and design of continuous reinforced concrete deep beams by using the strut-tie model approaches of current design codes. In the determination of the load distribution ratio, a concept of balanced shear reinforcement ratio requiring a simultaneous failure of inclined concrete strut and vertical steel tie was introduced to ensure the ductile shear failure of reinforced concrete deep beams, and the primary design variables including the shear span-to-effective depth ratio, flexural reinforcement ratio, and compressive strength of concrete were reflected upon. To verify the appropriateness of the present study, the ultimate strength of 58 continuous reinforced concrete deep beams tested to shear failure was evaluated by the ACI 318M-11's strut-tie model approach associated with the presented indeterminate strut-tie model and load distribution ratio. The ultimate strength of the continuous deep beams was also estimated by the experimental shear equations, conventional design codes that were based on experimental and theoretical shear strength models, and current strut-tie model design codes. The validity of the proposed strut-tie model and load distribution ratio was examined through the comparison of the strength analysis results classified according to the primary design variables. The present study associated with the indeterminate strut-tie model and load distribution ratio evaluated the ultimate strength of the continuous deep beams fairly well compared with those by other approaches. In addition, the present approach reflected the effects of the primary design variables on the ultimate strength of the continuous deep beams consistently and reasonably. The present study may provide an opportunity to help structural designers conduct the rational and practical strut-tie model design of continuous deep beams.

• 한국전산구조공학회논문집
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• 제29권3호
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• pp.209-218
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• 2016

최근 신재생 에너지 중 하나인 풍력발전에 대한 관심이 증가하고 있다. 풍력발전은 토지구입비, 소음문제에 자유로운 해상풍력으로 추세가 옮겨가고 있으며 이를 위한 연구개발이 전 세계적으로 활발히 이루어지고 있다. 그러나 해상에 위치한 풍력발전을 위한 설계기준은 국내, 국외 모두 없는 실정이다. 이 점을 고려하여 국내, 국외의 구조설계기준인 도로교 설계기준, 항만 및 어항 설계기준, DNV OS를 참고하여 다중 파일기초 콘크리트 지지구조물(MCF)의 내진해석을 수행하여 결과를 비교하였다. 또한 시간에 의한 효과를 확인하기 위하여 시간이력 해석 또한 수행되었다. 부가질량법(Added-mass method)을 사용하여 물과 구조의 상호작용을 고려하였고 물의 유무에 따라 구조물의 반응을 비교하였다.

• 경영정보학연구
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• 제19권3호
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• pp.179-199
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• 2017

멀티채널 소비자들의 크로스오버 쇼핑행동이 두드러지는 시점에서 최근 사용자 행동 메커니즘에 대한 관심이 높아지고 있다. 단순한 멀티채널 사용자행동에 대한 이해 차원을 넘어 면밀한 관찰을 통해 기존 연구방식에서 발견할 수 없었던 크로스 오버 쇼핑행동에 대한 연구 축적이 필요한 시점이라 할 수 있다. 본 연구는 근거이론(grounded theory)를 활용하여 멀티채널 사용자들이 왜, 어떻게 크로스오버 쇼핑행동을 하는지를 살펴보는데 그 목적이 있다. 본 연구에서는 총 25명의 응답자를 대상으로 인터뷰를 진행하였으며, 근거자료의 분석을 통해 118개의 개념을 추출하였고, 유사 개념간의 통합과정을 통해 28개의 범주를 제시하였다. 본 연구는 근거이론을 적용하여 기존 설문연구에서는 파악하기 어려웠던 사용자들의 동적인 탐색과 구매행동의 메커니즘을 포착함으로써 멀티채널 환경에서 설명 가능한 행동연구 방안을 제안하고 있다는 점에서 의의가 있다.

• 한국컴퓨터정보학회논문지
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• 제21권11호
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• pp.73-78
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• 2016

All citizens will not be infringed communications rub. That can be seen to have the privacy freedom.lot (Internet of things) have released a security system in the era of information privacy appear that public safety and threat. Currently, Information and communication devices can be use criminal investigation, including search and seizure confirmed the fact communication of the communication restriction information storage medium for the common purpose of providing material system, the system provides data and communications. This paper focused on Privacy and open of information data by the Prosecutor and Police in korea. Privacy rights include that transparency information, communication, and protections for the rights of the individuals. It is necessary to be lawfulness of processing, individuals consent while Prosecutors investigations. especially we need explicit condition and National agency need to obtain in order to legitimize their processing of personal information data. The author emphasize are as follows: first, to examine Privacy rights information' necessity and problem, second, to understand Privacy rights and limits, third, to suggest improvements for the purpose of Transparency, codes of conduct and Democracy of information.

• Wind and Structures
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• 제15권3호
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• pp.209-221
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• 2012

The flutter reliability analysis of long span bridges requires use of a software tool that predicts the uncertainty in a flutter response due to uncertainties in the model formulation and input parameters. Existing flutter analysis numerical codes are not capable of dealing with stochastic uncertainty in the analysis of long span bridges. The goal of the present work is to develop a software tool (FREASB) to enable designers to efficiently and accurately conduct flutter reliability analysis of long span bridges. The FREASB interfaces an open-source Matlab toolbox for structural reliability analysis (FERUM) with a typical deterministic flutter analysis code. The paper presents a brief introduction to the generalized first-order reliability method implemented in FREASB and key steps involved in coupling it with a typical deterministic flutter analysis code. A numerical example concerning flutter reliability analysis of a long span suspension bridge with a main span of 1385 m is presented to demonstrate the application and effectiveness of the methodology and the software.

• 한국IT서비스학회지
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• 제4권1호
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• pp.117-128
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• 2005

When we conduct development of a large-size SI project, it is highly necessary to utilize an appropriate application framework which helps to build a qualified software with high productivity in a short period of time. In this paper, we propose the architecture of a dynamically reconfigurable CBD application integration framework that has been used for developing large-scale e-business applications to achieve high development productivity and maintainability. This Integration framework can easily extend its functionalities, and dynamically change its configuration during run time according to the business category, such as applying interaction patterns among main components in software architecture, rules, policies, and environmental parameters. Dynamic reconfiguration has the feature to make applications be easily customized for changeable requirements. Through our application integration framework, huge sizes of contents can be managed according to the business category as well, by keeping configuration informations and huge volumes of source codes. In order to evaluate out application integration framework in terms of performance criteria, we present experimental results of throughputs from the framework by yielding dynamic configuration without any performance degradation.

• 보건행정학회지
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• 제12권2호
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• pp.92-114
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• 2002

While making a vigorous discussion about self-regulation for exponential growth of harmful health information on the Internet, many countries lave made various efforts to select and circulate high quality health information on the Internet. The purpose of this study Is to review the serf-regulation methods of health information on the Internet and to suggest quality control methods of health information on the Internet suitable for Korea. Self-regulation methods of the health information on the Internet include ‘content rating system(or content selection system)’, ‘codes of conduct or guideline’, ‘internet hot-line’, ‘education for information providers and consumers’. Any self-regulation method should be used with other methods. We can regulate health information on the Internet effectively by using both self-regulation methods and compulsive methods such as law. Also information providers, information consumers, specialists, consumer representatives, scholars, governments officers should take part in doing these efforts and make concern.

• 한국도서관정보학회지
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• 제25권
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• pp.475-500
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• 1996

The purpose of this study is to survey the development trends of school libraries in the western world namely U. S. A., Canada by analyzing such items as education and environment, staff, policy, standard and professional organization, and to find out how and why they were able to maintain efficient library services. The major findings are summarized as follows : (1) There are school district supervisor whose functions are to direct and supervise the school libraries in the district. (2) The school district supervisor, school administrator, Teacher and Teacher librarian all recognize the importance of its educational role and cooperate together for the development. (3) They gether statistical data on school library for continuous revision of statement, guideline and standard. (4) Not only the educational organization and the library organization but also the private foundation conduct systematic research and extend financial aid for the development of school library. (5) The Compulsory Codes and pertinent laws have been enacted to promote school library development.

• 자동차안전학회지
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• 제15권2호
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• pp.49-55
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• 2023

In this study, it was analyzed that it is necessary to clarify the quality certification parts system, to make certification codes mandatory for self-certification products that are normally distributed, and to conduct follow-up management so that prompt action and thorough management of test reports are necessary in case of defects. Big data-based data, the detailed number of parts replacement cases, parts cost by part group, share, average labor cost, calculated to analyze the detailed automobile parts industry, and automobile parts certification system and automobile parts market in major countries including Korea and Through the distribution structure analysis, improvement plans for the automobile quality certification parts system were derived.

• 기술혁신학회지
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• 제16권2호
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• pp.444-475
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• 2013

본 연구는 미국과 한국의 기술이전을 위한 제도 구축 과정을 살펴보고, 한국의 KAIST와 미국의 캘리포니아대학교의 사례를 통해 비교 탐색한다. 이를 위해 한국과 미국의 기술이전 정책과 제도가 형성되는 과정이 해당 대학의 제도 개선과 어떤 관계를 지니는지를 함께 비교하며, 정책적 시사점을 도출한다. 캘리포니아대학교는 1960년대부터 구성원의 기술이전 활동을 규제 또는 촉진하기 위한 규범과 지침을 제정하였다. 이러한 제도화는 특허관리에서 연구자로서의 올바른 행동 지침까지 규율하고 있다. 규범화와 관행을 통해 산학협력활동에 따른 위법과 적법의 경계를 명확히 함으로써 불확실성을 감소시켰다. 이에 반해, KAIST는 기술이전에 관하여 국내의 우수 사례이지만 제도 개선이 내부 요구보다는 정부의 정책방향에 좌우되는 바가 크다. 특히, 미국의 베이-돌 법안과 같은 정부차원의 법적 제도가 2002년에도 도입됨에 따라 아직 제도 구축의 초기단계에 머물고 있다. 본 비교 연구의 결과, 기술이전의 실질적 성공을 위해서는 대학에 기술이전 권한을 위임하고 대학 자율권을 확대해야 함을 시사한다.