• Proceedings of the Korea Water Resources Association Conference
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• 2007.05a
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• pp.879-882
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• 2007

수문관측자료 운영 개선방안에 대한 연구(2006, 김휘린, 조효섭)에서 건설교통부 한강홍수통제소에서 수행하고 있는 수문관측자료를 대상으로 하여 관측, 기록, 전송, 품질관리, DB구축 및 정보화의 5단계로 임의 분류하고 각 단계별 현황을 파악하여 문제점을 검토하고 개선방안을 제안하였다. 이는 적극적으로 수용되어 수문관측자료 운영에 대해 개선을 시도하였으며 본 논문에서는 이를 간략히 소개하고자한다. 첫째, 관측소 점검 대장이 조사과와 전기통신과로 이분화되어 있고 각 관측소별로 점검대장이 비치되어 있으나 이를 수기로 작성하고 있으며 자료의 업데이트 및 과거점검대장의 DB 구축과 비전산화를 지적한 바 있다. 이에 '물관련시스템 DB연계 사업'을 통해 수기로 작성된 관측시설 점검대장을 전부 DB로 구축하였고 이를 총괄하여 관리 및 점검사항을 업데이트할 수 있는 관측시설 점검대장 관리 및 입력 프로그램을 구축하였고 현재 한강홍수통제소에서 시험 운영 중에 있다. 향후 보완이 끝난 후에는 낙동강, 금강, 영산강 홍수통제소에도 확대 설치 및 운영을 실시할 예정이다. 둘째, 수문자료의 품질관리에 있어서 전산시스템에 의한 완전 자동화는 실현하기가 어려울 뿐 아니라 바람직하지 못한 결과를 가져올 수 있으므로 담당자의 수동 검토 및 처리과정은 필수적이라고 논한 바 있다. 그 후 수문자료품질관리T/F팀(조사과, 전기통신과, 하천정보센터)이 구성되었고, 홍수기 오 결측자료 발생 확인, 긴급대응 촉구, 이상치 발생원인 추정 및 대책 마련 등 고품질 수문자료를 생성하기 위해 노력하였다. T/F팀 활동사항은 타홍수통제소에서도 벤치마킹이 되고 있다. 보다 정확한 댐운영자료 공유방안을 위한 관련기관과의 협력회의가 개최되어 품질관리된 자료의 정보 공유시기, 공유방식, 자료형태 등이 결정되었다. 이는 유관기관간 품질관리된 댐운영자료의 효율적인 정보 공유체계 확립을 위한 체계를 마련하는 계기라고 사료된다. 또한, 유량측정사업 결과를 익년에 반영하는 기존 방식을 개선하기 위해 유량자료관리및분석시스템(프론티어사업에서 수행, 한국건설기술연구원 개발)을 통제소내에 설치 운영을 추진하고 있다.

• Applied Microscopy
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• v.42 no.2
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• pp.77-86
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• 2012

The morphological and histologic differentiation of the central nervous system (CNS) in the wolf spider Arctosa kwangreungensis with respect to postembryonic development are studied using light and scanning electron microscopes. The organization of CNS which consisted of supraesophageal ganglion (SpG) and subesophageal ganglion (SbG) are established prior to the postembryo stage. The brain of first instar spiderling after a molt of the postembryo is also made up of supraesophageal ganglion and subesophageal ganglion. Although development of the optic nerve and optic lobe in SpG are not completed during the postembryoic stage, completion of whole neural system resemble to that of adult are established during the second instar stage. In particular, optic gangalion is developed from the undifferentiated cell clusters of the SpG, moreover four pairs of appendage ganglia and another pairs of abdominal ganglia are produced from the SbG. Nerve cells of the most developing stages are composed of typical monopolar neur1ons, and total three types of neurons can be identified through the histological and morphological basis of present study. These cell clusters are differentiated into neurons and grow dendritic fibers according to further development of the CNS.

• Journal of Digital Convergence
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• v.14 no.11
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• pp.297-304
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• 2016

The aim of the study is to combine software reuse with agile methods through reuse in the early stage of agile development. Although agile methods and software reuse have different practices and principles, these methods have common goals, such as reducing development time and costs and improving productivity. Both approaches are expected to serve as viable solutions to the demand for fast development or embracing requirement changes in the rapidly changing environments. In the present paper, we identify economical agile reuse and its type and study a reuse technique for input queue in Kanban board at the early stage of hybrid agile methods. Based on our results, we can integrate software reuse with agile methods by backlog factoring for input queue item in the hybrid Scrum and Kanban method. The proposed technique can be effectively applied to e-class applications and can reuse the input queue items, showing the combination of the two approaches. With this study, we intend to contribute to reuse in the early stage of agile development. In the future, we plan to develop a software tool for economical agile reuse.

• 대한공업교육학회지
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• v.31 no.1
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• pp.23-45
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• 2006

The purpose of this study is to develop a instructive strategy model of cooperative learning for practical class in technical high school. To achieve this purpose, this study has conducted related literature investigation and interviewed with professionals for reconstruction of practice contents. As a result, 15 steps instructional strategy model of cooperative learning was designed and this model based on traditional 4 steps model, Jigsaw and STAD model which have been verified as effect. To complete the final project, all the team members must cooperate themselves and tutor their peers with learning guides which are constructed as a modular system. This instructional strategy model which is correlated with modular instruction, peer tutoring and cooperative learning is expected to enhance students' school work of psychomotor domain as well as cognitive domain and affective domain.

• Journal of Korea Society of Industrial Information Systems
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• v.13 no.3
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• pp.63-86
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• 2008

Recently implementing enterprise resource planning (ERP) systems with packaged business software is growing rapidly. The purpose of this article is to provide further insights into the business process change and change management in implementation process of ERP systems. This paper examine an survey of some 146 firms' adoption and implementation of packaged ERP software. In this paper, we propose an integrated approach of business process change and change management of the implementation process. This research highlights the importance of change management for implementing ERP. In addition, we empirically reveals that the eventual success of ERP systems depends on effective business process change and change management during the ERP implementation.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.41 no.2
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• pp.244-253
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• 2016

The QRS complex of ECG signal represents the depolarization and repolarization activities in the cells of ventricle. Accurate informations of $QRS_{onset}$ and $QRS_{offset}$ are needed for automatic analysis of ECG waves. In this study, using the amount of change in the QRS complex voltage values and the distance from the $R_{peak}$, we determined the junction point from Q-wave to R-wave and the junction point from R-wave to S-wave. In the next step, using the integral calculation based on the connection point, we detected $QRS_{onset}$ and $QRS_{offset}$. We use the PhysioNet QT database to evaluate the performances of the algorithm, and calculate the mean and standard deviation of the differences between onsets or offsets manually marked by cardiologists and those detected by the proposed algorithm. The experiment results show that standard deviations are under the tolerances accepted by expert physicians, and outperform the results obtained by the other algorithms.

• Polymer(Korea)
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• v.33 no.2
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• pp.124-130
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• 2009

In presence of a polymer, the crystallization of low MW organic materials can be stopped at an intermediary step, where mesocrystals can be identified. A mesocrystal is defined as a superstructure of nanoparticles having polymer-adsorbed crystal faces on the scale of several hundred nanometers to micrometers. This study examined the effects of water soluble polymers and relevant parameters on the formation of guanosine-5'-monophosphate mesocrystals. It was observed in OM and SEM that GMP obtained in a polymer solution had a unique particle morphology different from the typical one of GMP. XRD analysis indicated that the polymer-directed crystallized GMP had a different polymorph of GMP. This result shows that the crystal structure of GMP can be changed by polymers. It was observed in TGA analysis that the polymer-directed crystallized GMP had a different water content, indicating a different type of hydrate.

• International Area Studies Review
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• v.12 no.3
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• pp.49-67
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• 2008

In this paper, we address the problem of optimal monetary policy rule in the presence of abrupt shifts in the structure of the economy. To do so, we first estimate a Markov switching model for the US housing price inflation, and find evidence supporting the presence of two distinct regimes for the US housing price inflation. One of the two regimes identified appears 'usual', in that housing price inflation negatively responds to higher real interest rate. The other regime is 'unusual', in that the housing price inflation is positively related with real interest rate. We then solve an optimal control problem of the FRB under the presence of the two regimes thus identified. The optimal policy is 'asymmetric' in that the optimal responses in the 'usual' regime require the FRB to lean against the wind to inflationary pressure, while the FRB is recommended to accommodate it in the unusual regime. It is also found that the optimal degree of responses is more conservative when the FRB acknowledges the uncertainty about future regime.

• Journal of Digital Convergence
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• v.16 no.11
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• pp.123-135
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• 2018

The purpose of this study is to develop an altruistic behavior enhancement program for middle school students based on the Maumgram. To do this, we conducted basic research on the altruistic behavior program by collecting and analyzing related literature. The contents of the survey are related to the factors necessary for program analysis and content analysis. It has been validated twice in total by eight experts on the composition and content of the program. The program design consisted of three stages of observation, conversion, and relationship orientation, and selected contents suitable for altruistic programs and conducted them once a week for middle school students, self-inspection, understanding, empathy and communication. However, further study is needed to verify the effect of applying the program in the future. This study will provide basic data on the character education of middle school students by promoting the tendency of altruistic behavior through adjusting training of selfishness.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.21 no.5
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• pp.95-108
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• 2011

Smart Grids are intelligent next generating Electric Power System (EPS) that provide environment-friendliness, high-efficiency, and high-trustworthiness by integrating information and communication technology with electric power technology. Smart grids help to supply power more efficiently and safely than past systems by bilaterally exchanging information between the user and power producer. In addition, it alleviates environmental problems by using renewable energy resources. However, smart grids have many cyber security risks because of the bilateral service, the increase of small and medium-sized energy resources, and the installation of multi-sensors or control devices. These cyber risks can cause critical problems within a national grid through even small errors. Therefore, in order to reduce these risks, it is necessary to establish a cyber security strategy and apply it from the developmental stage to the implementation stage. This thesis analyzes and recommends security strategy in order to resolve the security risks. By applying cyber security strategy to a smart grid, it will provide a stepping-stone to creating a safe and dependable smart grid.