• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2007.10a
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• pp.247-256
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• 2007

Accessibility is a field of study that has primarily been applied to urban or transportation problems two dimensionally. However, in large complex buildings as shopping centers or hospitals, inter-spatial accessibility among compartments has to be taken into account such as in building layouts or evacuation planning. This study expands space syntax theory, one of accessibility-related methodologies used for computing connectivity in urban or architectural spaces, into 3D indoor spaces. Although space syntax is basically a topology-based theory that does not consider general costs such as distance or time, this study suggests modification that incorporates different types of impedances in moving between places including distances, turns and transfers between floors. The proposed method is applied to a 3D campus building model in computing and displaying the accessibility to exit doors or cohesive accessibility among similar functions.

• Proceedings of the Korean Information Science Society Conference
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• 2005.07b
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• pp.304-306
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• 2005

아키텍쳐(Architecture)는 프로젝트 초기에 결정된 설계 결정사항을 기재해 놓은 산출물이고 프로젝트 관련자(Stakeholder)간 의사소통의 수단이다. 아키텍쳐가 안정되어야 향후 진화(Evolution) 과정 중에 시스템을 이해하고 예측 관리하는 것이 쉬워지고 또한 기본 구조를 변경하지 않고 여러 가지 기능을 추가할 수 있다. 아키텍쳐 안정성(Architecture Stability)이란 진화과정 중에 발생하는 변경들을 견디는 정도를 말하고 변경은 적응변경(Adaptive Changes), 교정변경(Corrective Changes), 완전변경(Perfective Changes )을 포함한다. 그런데 진화 과정 동안에 변경들은 필연적으로 발생하게 되고 그로 인해 결정된 아키텍쳐는 본래의 모습을 그대로 유지할 수 없게 된다. 따라서 진화 과정시 아키텍쳐의 안정성을 측정하고 향후 변경에 대한 대비가 필요하다. 본 논문은 변경의 크기, 변경의 횟수, 변경의 종류와 아키텍쳐 불안정성의 관계를 버전별로 연구하고 그와 관련된 매트릭을 제안한다. 매트릭을 실제 프로젝트(Ant,JDT)에 적용하고 측정된 결과를 통해 아키텍쳐 안정성을 살펴봄으로써, 향후 안정성을 고려하여 아키텍쳐를 관리하고 개발하는데 도움을 줄 수 있을 것이다.

• Journal of the Korean association of regional geographers
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• v.17 no.5
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• pp.617-637
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• 2011

This study employs qualitative approaches to examining geographical characteristics and patients' determinants of online referrals in terms of regionalization. In this light, I conducted interviews with 20 patients receiving online referrals in Choongbook, Korea, and investigated their behaviors regarding these referrals between July and August 2009. I found that many patients who suffered from various levels of illness preferred tertiary care centers outside of Choongbook and did not enjoy their experience with the local medical institutions as the online referral service sites. This result might be because patients choose online referrals for psychological considerations such as quality and level of health care services, personal stakes in online referral service sites, acceptability and credibility of good tertiary care centers, and easy access to and use of medical institutions. Meanwhile, immediate benefits with regard to the technological value of online referrals, such as convenience, utility, and original purpose associated with regionalization, did not influence patients' decision-making. Therefore, the social and public networks affiliated with online referrals plus the effect of Korean medical laws play hostage to private decisions made by citizens, who prefer high-level medical institutions. Accordingly, the technological contribution of online referrals does not halt the outflow of patients from local, tertiary care centers. Especially, the existing health care system and patients' behaviors are deeply related to referrals in the online system. To protect regionalization, the improvement of health care services from the present state of affairs is required.

• Proceedings of the Korea Water Resources Association Conference
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• 2005.05b
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• pp.1286-1290
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• 2005

소하천의 치수기능상 안전성을 확보하고 소하천의 생태계를 고려하며 소하천의 본래의 경관을 보전 및 향상시키는 이른바 자연형 소하천 정비가 추진되고 있다. 행정자치부는 자연형 소하천 정비 사업에서 도출된 문제점을 개선하기 위하여 안성시 당왕소하천 등 9개 소하천에 관한 자연형 소하천정비 시범사업 및 소하천 모니터링 사업을 2002년부터 시행하였다. 모니터링 사업은 시범소하천의 공사전, 공사중, 공사후 모니터링을 실시하여 향후 자연형 소하천 정비 공사에 관한 개선 자료를 제시하고자 하였으며, 본고에서는 당왕소하천 시범사업에서의 공사후 모니터링을 통하여 공사전$\cdot$후의 하상변동, 적용된 호안공법의 수리적 특성, 호안 식생 활착밀도, 홍수량 및 홍수위 측정, 흔적수위를 근거로 한 하도 수리특성 재현 등을 수행하였다. 모니터링 결과를 근거로 하여 하천 수리변화와 생태계와의 관계 규명, 각 구간에서의 적용공법의 적정성 평가, 분야별 공법 및 사업전반에 대한 평가, 치수 안정성을 갖는 자연형 호안공법에 관한 설계지침 및 유지관리 지침, 향후 하천 환경 정비 공법에 대한 대안 등을 제시하는데 필요한 기초자료를 축적하고자 한다.

• Applied Biological Chemistry
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• v.28 no.1
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• pp.13-18
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• 1985

To investigate the fusion of bacterial protoplasts, two auxotrophic mutants of Bacillus subtilis were isolated after treatment with nitrosoguanidine. Two auxotrophs were uracil-auxotroph and tryptophan-auxotroph. Back mutation frequencies of $ura^-$ and $trp^-$ -auxotrophs were $2.4{\times}10^{-8}$ and less than $1.0{\times}10^{-8}$, respectively. The optimal pH and temperature of protoplast formation with lysozyme were 6.5 and $30^{\circ}C$. The optimal lysozyme concentration was $200{\mu}g/ml$. The regeneration frequency of protoplast was 3.3%.

• Journal of Korean Library and Information Science Society
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• v.44 no.2
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• pp.137-165
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• 2013

For public libraries to deliver appropriate information to various types of users in information society that allows people to access and use a variety of information, it is necessary to provide services applying the universal design principles in terms of universality. The purpose of this study is to develop the evaluation indicators for universality of public library services, which apply universal design principles to evaluate if public libraries provide appropriate services that meet their original purpose. The final 'Evaluation Indicators of Universality of Public Library Services' consist of six evaluation areas and 41 evaluation contents in 10 evaluation items. Each evaluation content is categorized into a relevant factor among five universal design applicable factors (Universality, Convenience, Recognition, Safety and Economic Feasibility) according to its characteristics.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.8 no.3
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• pp.85-90
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• 1988

A probabilistic model for the failure in a homogeneous soil slope is presented. The Safety of the slope is measured through its probability of failure rather than the customary factor of safety. The safety margin of slope failure is assumed to follow a normal distribution. Sources of uncertainties affecting characterization of soil property in a homogeneous soil layer include inherent spatial variability., estimation error from insufficient samples, and measurement errors. Uncertainties of the shear strength-along potential failure surface are expressed by one-dimensional random field models. The rupture surface, created at toe of a soil slope, has been considered to propagate towards the boundary along a path following an exponential (log-spiral) law. Having derived the statistical characteristics of the rupture surface and of the forces which act along it, the probability of failure of the slope was found. Finally the developed procedure has been applied in a case study to yield the reliability of a soil slope.

• KDI Journal of Economic Policy
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• v.15 no.2
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• pp.3-39
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• 1993

부실기업정리(不實企業整理制度)의 경제적(經濟的) 성격(性格)은 기업의 존속과 채권(債權)-채무(債務)의 조정(調整)으로 나누어 볼 수 있다. 본고(本稿)에서 필자(筆者)는 기업존속여부의 결정과 채권(債權)-채무(債務)의 조정시 사용될 수 있는 효율성(效率性)과 공정성(公正性) 기준을 제시한 뒤, 이에 입각하여 과거(過去) 및 현행(現行) 법정관리제도(法定管理制度)와 합리화조치(合理化措置)의 내용을 평가(評價) 분석(分析)하고, 개선방안을 제시하였다. 과거(過去) 및 현행(現行) 법정관리제도(法定管理制度)와 합리화조치(合理化措置)는 기업(企業)과 기업주(企業主)를 구분하지 못하여 기업의 조속결정과 채권(債權)-채무조정(債務調整)이 효율성(效率性)과 공정성(公正性)의 기준에 맞지 않게 이루어진 경우가 많았다. 본고(本稿)에서 제시한 주요(主要) 개선방안(改善方案)은 다음과 같이 요약할 수 있다. 부실기업정리시(不實企業整理時) 기업존속여부의 결정은 청산시 잔액가치(殘額價値)와 존속시 자산(資産)의 현재가치(現在價値)의 상대적(相對的) 크기에 의해 결정되어야 하며, 채권(債權)-채무(債務)의 조정은 본래의 채무계약(債務契約)의 정신을 계승하는 것이 바람직하다. 둘째, 채권(債權)-채무(債務)의 조정(調整) 부채(負債)-주식(柱式)의 교환(交換)과 제(第)3자(者) 매수방식(買受方式)을 적극 활용하여야 한다. 셋째, 부실기업(不實企業)에 대한 대규모 자금지원(資金支援)이 불가피한 경우 미국(美國)의 "크라이슬러"사(社)의 경우와 같이 주식전환부(柱式轉換附) 사채형식(社債形式)을 취하는 것이 바람직하다.

• Journal of Wetlands Research
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• v.12 no.2
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• pp.87-93
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• 2010

River restoration plan and selection method are needed to reflect the diversity of river. Meanwhile, the ultimate purpose of river restoration is natural recovery of the river. Recently. hydrophilic enhancement is a tendency to include. In this study, naturalness of a river was used to establish alternative for the natural river recovery. Also, naturalness of a river calculated by using the evaluation of river naturalness that was developed using multi-criteria decision making to fit the environmental conditions in Korea. After selection the evaluation items for assessing the naturalness of the river based on the characteristics of the river, multiple alternatives were constructed and the naturalness of river for each of those alternatives were estimated. Comparing the estimated values has made the measurement of the natural recovery effect for each alternative efficient.

• The KIPS Transactions:PartD
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• v.17D no.3
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• pp.209-222
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• 2010

As the business competition between firms is getting intense, one of the sources of competitive advantage is effectively and efficiently to create, share, and apply information/knowledge among employees. Most of the firms which conduct knowledge management are operating a Community of Practice(CoP) in order to create, share and utilize this kind of information/knowledge resource. Recently, the CoP is getting out of its informal and spontaneous manner and is beginning to be led by the top management, receiving official support, in order to achieve the organization's strategic goals. However, the corporation's strategic operation of the CoP is not only against its original characteristics but also hampers the spontaneity of its participants. Every participant has different motivation to participate and different preference for reward type. This study, with the survey of 114 respondents, found that intrinsic motivation as well as extrinsic motivation significantly affect the motivation-reward fitness. Also, the motivation-reward fit was found to influence CoP commitment which ultimately leads to knowledge sharing activity in the CoP context. This research will help knowledge management companies to figure out how the two things of participants' motivation and their reward types can fit together, and how such fitness ultimately affects the participants' commitment and their knowledge sharing activities.