• Title/Summary/Keyword: Project-based

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Developing Response Plan for the Direct Buying System for SME's Construction Materials based on the Analysis of Material Procurement Management Load: Focused on the Owner Providing Public Apartment Housing (지급자재 조달관리부담 평가에 기초한 중소기업 공사용자재 직접구매제도 대응방안: 공공아파트를 공급하는 발주자를 중심으로)

  • Song, Sang-Hoon;Bang, Jong-Dae;Sohn, Jeong-Rak
    • Land and Housing Review
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    • v.4 no.4
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    • pp.425-434
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    • 2013
  • The Small and Medium Business Administration specified 123 construction materials mandatory to purchase directly and forced the public owners to provide the contractors with materials as required by related law. This study extensively reviewed various characteristics and management factors of the owner-providing materials consumed in the public apartment housing under Direct Buying System(DBS) from the public owner's perspective. Subsequently, the major managed materials were identified, and the proper response plan was developed along the material procurement process. The Procurement Management Load Indices (PMLI) of 43 materials were evaluated according to rating criteria with procurement path, project-specified level, user requirement level, supplier's responsibility, on-site work requirement, additional parts, and inspection standards. The tile and aluminum windows were classified in the group needing high-level procurement efforts to reduce the errors and ensure the efficiency. The accurate quantity estimation method, definite purchase details, management activity definition before and after production, additional quantity for rework, interference coordination were defined as the essential activities for effectively responding to DBS.

A Development of Mechanism on Supply Chain Information Recognition among intelligent equipment for USN based construction supply chain management process (차세대 지능형 건설물류관리 프로세스 지원을 위한 지능형 장비 간 물류정보인식 메커니즘 개발)

  • Kwon, Sang-Hyuk;Shin, Tae-Hong;Chin, Sang-Yoon;Kim, Yea-Sang;Kwon, Soon-Wook
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2008.11a
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    • pp.763-766
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    • 2008
  • The success of a construction project depends on efficient construction supply chain and service informationalization as types and quantities of materials in construction industry geometrically increase because the size of the construction industry increasingly becomes huge, high-rise, and complex. However, the omission of data for each step and the lower effect occurs because of uncertainty and inaccuracy of information as compared to other industries. In addition, it takes many hours to manage the present material states. Currently, IT technology and various mobile devices are being developed through the automation system of next generation intelligent construction supply chain management for the effective supply chain information management but the confusion regarding the recognition and transmission of the supply chain information between the multiple materials and transportation equipment using the IT and wireless network technology occurred. Therefore, the objective of this study is to propose the recognition mechanism which can deduce processes which caused the confusion of the recognition and transmission with supply chain information and solve the problems originated from the processes so as to solve the problems related to the confirmation and the communication of the correct supply chain information.

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3D Digital Design Optimization Process Considering Constructability of Freeform Structure (비정형 구조물의 시공성을 고려한 3차원 디지털 설계 최적화 프로세스)

  • Ryu, Han-Guk
    • Korean Journal of Construction Engineering and Management
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    • v.14 no.5
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    • pp.35-43
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    • 2013
  • Nowadays the widely used media in architecture include visualizations, animations and three-dimensional models. 3D digital methods using active CAM(Computer Aided Manufacturing) and CNC(Computerized Numerical Control) imaging have been developed for accurate shape and 3D measurements in freeform buildings. In contrast to a conventional building using auto CAD system and others, the proposed digital optimization method is based on a combination of 3D numerical data and parametric 3D model for design and construction. The objective of this paper is therefore to present digital optimization process for constructability of freeform building. The method can be useful in the effective implementation of an error-proofing process of freeform building during design and construction phase. 3D digital coordinate data can be used effectively to identify correct size of structural and finish members and installation location of each members in construction field. In addition, architects, engineers and contractors can evaluate design, materials, constructability and identify error-proofing opportunities. Other project participants can also include representatives from all levels of management, departments as well as workers and key subcontractors' personnel, if necessary. The 3D digital optimization process is therefore appropriate to serious variations in freeform shape. For future study, the developed digital optimization method is necessary to be carried out to verify the robustness and accuracy for constructability in construction field.

Juvenile Offenders' Experience of Music Therapy within the Framework of Self-determination: A Modified Grounded Theory Study (조건부 기소유예 판결을 받은 학교폭력 가해 청소년의 음악치료 경험에 관한 연구: 자기결정성을 중심으로)

  • Yun, Juri
    • Journal of Music and Human Behavior
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    • v.11 no.1
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    • pp.63-82
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    • 2014
  • This qualitative study investigated how a music therapy program was experienced by juvenile offenders of school violence who were under a conditional suspension of indictment. Six adolescents participated in 12 consecutive weeks of group music therapy sessions, and were interviewed individually based on open-ended questions addressing key constructs of self-determination theory, which are autonomy, competence and relatedness. Using this framework, data was deductively analyzed using a modified grounded theory. The analysis also investigated how such impact of music therapy transferred or expanded to their everyday life. The analysis revealed that the properties of autonomy included making choices of songs and instruments, deciding how to play, and expressing opinions about music. Competence was associated with developing skills on musical instruments, creating own music, concentrating on their own project, and demonstrating their abilities. Relatedness were related to collaborating, exchanging opinions, and playing a part in musical projects. In addition, it was found that they also experienced shifts in consciousness and behavior, expanded self-awareness, and mutual exchange and group support. Lastly, it was revealed that the positive emotional and behavioral changes they experienced in music also appeared in their school life.

Forward/Reverse Engineering Approaches of Java Source Code using JML (JML을 이용한 Java 원시 코드의 역공학/순공학적 접근)

  • 장근실;유철중;장옥배
    • Journal of KIISE:Software and Applications
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    • v.30 no.1_2
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    • pp.19-30
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    • 2003
  • Based upon XML, a standard document format on the web, there have been many active studies on e-Commerce, wireless communication, multimedia technology and so forth. JML is an XML application suitable for understanding and reusing the source code written using JAVA for various purposes. And it is a DTD which can effectively express various information related to hierarchical class structures, class/method relationships and so on. This paper describes a tool which generates JML document by extracting a comment information from Java source code and information helpful for reusing and understanding by JML in terms of the reverse engineering and a tool which generates a skeleton code of Java application program from the document information included in the automatically or manually generated JML document in terms of the forward engineering. By using the result of this study, the information useful and necessary for understanding, analyzing or maintaining the source code can be easily acquired and the document of XML format makes it easy for developers and team members to share and to modify the information among them. And also, the Java skeleton coed generated form JML documents is a reliable robust code, which helps for developing a complete source code and reduces the cost and time of a project.

A Study on Rainfall-Runoff Analysis by Geomorphological Instantaneous Unit Hydrograph (GIUH) (지형학적 순간단위도(GIUH)에 의한 강우-유출해석)

  • Choi, Hung-Sik;Park, Chung-Soo;Moon, Hyung-Geun
    • Journal of the Korean Society of Hazard Mitigation
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    • v.6 no.1 s.20
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    • pp.49-58
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    • 2006
  • Rainfall-runoff characteristics are analysed based on the geomorphological instantaneous unit hydrograph(GIUH) derived by geomorphological parameters using geographical information system in watershed ungaged or deficient of field data. Observed data of Seom river experiment watershed at upstream of Hoengseong dam and variable slope method for hydrograph separating of direct non are used. The 4th stream order of Seom river experimental watershed is developed with a regular correlation referred to the Horton-Strahler's law of stream order. The characteristic velocity to determine shape parameter of GIUH is 1.0m/s and its equation is modified for accurate results. Hydrograph at the outlet of 4th stream order of Maeil gage station and at the outlets of 3rd stream order of Sogun and Nonggeori gage stations show a little differences in falling limb of hydrograph but agree well to the observed data in general. The results by hydrological routing with HEC-HMS to the outlet of 4th stream order of Maeil gage station which the hydrograph by GIUH obtained at Sogun and Nonggeori gage stations of 3rd stream oder are applied as upstream inputs give better agreement with observed data than those by hydrograph by GIUH obtained at Maeil gage station of 4th stream order. In general, the rainfall-runoff by GIUH has applicability to the watershed routing of ungaged project regions.

An Optimized V&V Methodology to Improve Quality for Safety-Critical Software of Nuclear Power Plant (원전 안전-필수 소프트웨어의 품질향상을 위한 최적화된 확인 및 검증 방안)

  • Koo, Seo-Ryong;Yoo, Yeong-Jae
    • Journal of the Korea Society for Simulation
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    • v.24 no.4
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    • pp.1-9
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    • 2015
  • As the use of software is more wider in the safety-critical nuclear fields, so study to improve safety and quality of the software has been actively carried out for more than the past decade. In the nuclear power plant, nuclear man-machine interface systems (MMIS) performs the function of the brain and neural networks of human and consists of fully digitalized equipments. Therefore, errors in the software for nuclear MMIS may occur an abnormal operation of nuclear power plant, can result in economic loss due to the consequential trip of the nuclear power plant. Verification and validation (V&V) is a software-engineering discipline that helps to build quality into software, and the nuclear industry has been defined by laws and regulations to implement and adhere to a through verification and validation activities along the software lifecycle. V&V is a collection of analysis and testing activities across the full lifecycle and complements the efforts of other quality-engineering functions. This study propose a methodology based on V&V activities and related tool-chain to improve quality for software in the nuclear power plant. The optimized methodology consists of a document evaluation, requirement traceability, source code review, and software testing. The proposed methodology has been applied and approved to the real MMIS project for Shin-Hanul units 1&2.

Field records of Dr. Tchang-Bok Lee based on herbarium specimens deposited at SNUA (서울대학교 농업생명과학대학 수목원 수우(樹友)표본관(SNUA)에 소장된 채집표본을 근간으로 한 이창복교수의 채집기록)

  • Chang, Chin-Sung;Kim, Hui;Jeon, Jeong-Ill
    • Korean Journal of Plant Taxonomy
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    • v.33 no.4
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    • pp.455-472
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    • 2003
  • The period from 1946 until his retirement from Department of Forest Resources, Seoul National University was a time of research and professional activity on many fronts for Korean Plant Taxonomy. From 1952 to 1984, he travelled south Korea and collected more than 70,000 specimens. Working out of this project, Dr. Lee developed the SNUA herbarium (Herbarium of The Arboretum of Seoul National University) as the best University herbarium in Korea for the modem floristic work. Dr. Lee's first interest rests on his contributions to our understanding of the twig identification in early 1950. Asian deciduous oak taxa have attracted particular focus to him late 1950 and early 1960. Accordingly Dr. Lee has been one of the specialists on systematic study of Asian oak which is a basis of identification in eastern Asia now. Dr. Lee's contributions concerning rare and endangered plants in Korea provide a tremendous information after a Japanese taxonomist, T. Nakai did in early 1920 to late 1930 in Korea. During his fourteen year career from 1970 to 1984, Dr. Lee spent time to investigate flora of many local and National Park sites. Much of his effort was directed to the voucher specimens for which he worked for the Illustrated Flora of Korea and also served as a field collector. These collections at SNUA enabled us to extend our educational outreach from the local to the national flora research. Although Dr. Lee has been and continues to be the soul of SNUA, collection records about his purpose and aim for each trip are not well documented except date and field studied sites. This lesson enables us to tackle the same issue of balancing quantity and quality with well documented specimens now.

Estimation of Post Evaluation Index of Natural Disaster Prevention Projects using Structure Equation Modeling (구조방정식모델을 이용한 자연재해예방사업의 사후 평가 지수 산정)

  • Heo, Bo Young;Song, Jai Woo;Yoon, Sei Eui;Lee, Seung Oh
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.34 no.6
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    • pp.1807-1814
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    • 2014
  • Natural disaster has been hard to prevent the occurrence of itself, thus in order to reduce the economic damages and loss casualties, it is important to be prepared in cases that the disasters should occur in advance. Interest of the related project to prevent various natural disasters has been grown along with an investment in Korea. Along with this movement, when investments related to natural disaster prevention projects were built on, the post evaluation that can verify the ripple effects of those investments on the community should be emerging as an essential task. For evaluating the effects of public investment projects such as natural disaster prevention projects in this study, the related researches would continue through qualitative analyses, for example, cost-benefit analysis. Even the qualitative analysis alone cannot fully explain the effects of those projects, the diverse methods of analyzing and evaluating those effects might not have been presented in those fields. For the post evaluation of natural disaster prevention projects through the qualitative analysis, this study derived subjects that had effects on the post evaluation of natural disaster prevention projects. Also, employing the structural equation modeling (SEM), the causation between post evaluation subjects and the effects of projects were quantitatively analyzed, and the weighting factors of evaluation items were calculated respectively. Based on these results, post evaluation index formula was proposed for the natural disaster prevention projects in Korea.

The Development of Citation Indicators of Korean Medical Journals (한국 의학학술지 인용지표 개발 연구)

  • 이춘실
    • Journal of the Korean BIBLIA Society for library and Information Science
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    • v.13 no.1
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    • pp.27-41
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    • 2002
  • The study investigated the citation indicators and the citation analysis data developed in the KoMCI(Korean Medical Citation Index) project. With the full understanding of the current level of citation rates of Korean medical journals by Korean medical journals. and of the characteristics and problems associated with the KoMCI citation indicators, it is possible to further develop or modify citation indicators which will better represent the citation patterns of Korean medical journals. The highest impact factor reported in the KoMCI 2000 : Korean Medical Journal Citation Reports, which covered 69 Korean medical journals published in 2000 is 0.424 and the average is 0.182. It is because only 8.5% of references cited in Korean medical journal articles is to the Korean journal articles, The journal self-citation rates are very high (usually higher than 50%) due to the fact that there are only a few Korean journals published in the same subject area. The KoMCI impact factors of two Korean SCI journals for which SCI JCR reported the SCI 2000 impact factors are about 1/3 of the SCI impact factors. It is because SCI is based on the citations received from 5,900 journals whereas KoMCI is from 69 journals.

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