• 한국태양광발전학회지
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• 제3권3호
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• pp.45-55
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• 2017

Large Scale Solar (LSS) is one of the initiatives announced by the Government of Malaysia in order to increase the share of renewable energy in electricity generation. It is widely known that the energy sector is the major contributor to the Greenhouse Gas (GHG) emissions (or carbon emissions) for many countries including Malaysia. It was recorded that the energy has contributed as much as 218.9 MtCO2eq in 2011, an increase of 31% since 2000. Therefore, this article will discuss the current situation of electricity generation by renewable energy in Malaysia, the expected outcomes of LSS implementation, and showcase the LSS project by Tadau Energy Sdn. Bhd. in Kudat.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.1243-1244
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• 2022

In recent years, the growing interest in off-site construction has led to factories scaling up their manufacturing and production processes in the construction sector. Consequently, continuous large-scale site monitoring in low-variability environments, such as prefabricated components production plants (precast concrete production), has gained increasing importance. Although many studies on computer vision-based site monitoring have been conducted, challenges for deploying this technology for large-scale field applications still remain. One of the issues is collecting and transmitting vast amounts of video data. Continuous site monitoring systems are based on real-time video data collection and analysis, which requires excessive computational resources and network traffic. In addition, it is difficult to integrate various object information with different sizes and scales into a single scene. Various sizes and types of objects (e.g., workers, heavy equipment, and materials) exist in a plant production environment, and these objects should be detected simultaneously for effective site monitoring. However, with the existing object detection algorithms, it is difficult to simultaneously detect objects with significant differences in size because collecting and training massive amounts of object image data with various scales is necessary. This study thus developed a large-scale site monitoring system using edge computing and a small-object detection system to solve these problems. Edge computing is a distributed information technology architecture wherein the image or video data is processed near the originating source, not on a centralized server or cloud. By inferring information from the AI computing module equipped with CCTVs and communicating only the processed information with the server, it is possible to reduce excessive network traffic. Small-object detection is an innovative method to detect different-sized objects by cropping the raw image and setting the appropriate number of rows and columns for image splitting based on the target object size. This enables the detection of small objects from cropped and magnified images. The detected small objects can then be expressed in the original image. In the inference process, this study used the YOLO-v5 algorithm, known for its fast processing speed and widely used for real-time object detection. This method could effectively detect large and even small objects that were difficult to detect with the existing object detection algorithms. When the large-scale site monitoring system was tested, it performed well in detecting small objects, such as workers in a large-scale view of construction sites, which were inaccurately detected by the existing algorithms. Our next goal is to incorporate various safety monitoring and risk analysis algorithms into this system, such as collision risk estimation, based on the time-to-collision concept, enabling the optimization of safety routes by accumulating workers' paths and inferring the risky areas based on workers' trajectory patterns. Through such developments, this continuous large-scale site monitoring system can guide a construction plant's safety management system more effectively.

• 디지털융복합연구
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• 제7권3호
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• pp.35-47
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• 2009

The IS project is getting more and more complicated and large-scaled. Many researchers and practitioners are interested in the IS development methodologies, automated tools and techniques, TQM to decrease project failure, and to increase IS performance. But, in spite of such various efforts, the latest Standish Group's research indicates that the project scale is bulkier than $1{\sim}2$ year ago and IS development project's batting average falls from 34% to 28% at the same time, proceeded project is increased, and project discharged arrives to $15%{\sim}18%$. According to a research, success possibility increased by 37% after a year of PMO introduction, and increased sharply by 62% after 2 years and by 65% after S years. This research has a goal to survey how the PMO function and operation type affect the IS project performance in the financial industry. I determine nine independent variables and three dependent variables from previous researches. The results of this study are that the four core functions of PMO have relationship with project performance. But, technical support function does not relate with organization performance. Among the four core PMO operation types, three types have an effect on the IS project performance except the perfectionist type.

• 한국CDE학회논문집
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• 제17권4호
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• pp.225-233
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• 2012

A comprehensive research effort in order to develop and disseminate modernized Korean housing (Hanok) has recently been initiated by Korean government. This large scale research project encompasses a wide spectrum of housing development including public policy, architectural plans, modules, construction materials and methods, prefabricated assemblies, automated production, construction management, and advanced information systems. For the purpose of integrating and automating the whole processes from an industry perspective, it is of great importance to develop a standard classification system and project numbering system (PNS) for the modernized Korean housing. This paper focuses on the standard classification systems and PNS for cost and schedule control. The distinct characteristics and managerial requirements were explored and embedded into the proposed classifications for modernized Hanok.

• 한국IT서비스학회지
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• 제13권3호
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• pp.343-357
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• 2014

As science and technology infiltrates every aspects of modern society in terms of economic and social growth and development, funding for research and development (R&D) is growing rapidly. Republic of Korea is not an exception in this trend and the R&D funding in Korea has been grown about 10% every year, recently. However, as the scope and size of funding grows exponentially, need for monitoring and managing these R&D projects becoming more and more imminent. Though different types of project management systems were developed by a variety of agencies and departments and used in monitoring and managing, these systems were developed as standalone silo type systems. These systems are not connected to each other while the same researchers may involved in different projects across agencies and department. Also, these management systems are not linked to the banking systems in which real transactions of funding occurs, such as cost reimbursement and financial audit of each R&D accounts. Historically, a few fraud and malappropriation cases were found and indicted. However, as the number of these incidents grows along with the growth of R&D funding, a large scale integration/linking of project management systems and banking systems. Realizing the importance of systems integration among agencies as well as with the banking systems, situational requirements analyses were conducted concerning the current state of R&D management system. As a results, a Real-time Case Management System (RCMS) was proposed as a solution to current problems. In this paper, the collected systems requirements were documents with analyses of the situation, the architecture of the integrated systems with more user-friendly technological alternatives. This large scale linkage requires interface standardization as well as modularization of interfaces. Proposed systems architecture is introduced here with technical details of Jex Framework used,, followed by resulting technical and economic performance of the Realtime Cashflow Management System (RCMS).

• 시스템엔지니어링학술지
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• 제7권2호
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• pp.13-19
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• 2011

A LRT(Light Rail Transit) is one of the Future Urban Railway Development Project. The project's goal is to reduce a transportation congestion in the center of the city. New transportation is intensely required in order to overcome a limit of the ground transportation that is the existing public transportation, A LRT(Light Rail Transit) construction project to be based on an unmanned driving system is the large composition system that a vehicle, a signal, communication, electric, track etc. were organically integrated as echo-friendly urban transportation systems. It also put a huge budget, which is a large-scale infrastructure projects. It is international trend that Light Rail Transit projects apply a technique in System Engineering for a schedule, cost, quality elevations, and to approach in viewpoints of life-cycle from initial construction steps to operation, abolition. This paper intends to analyze RAM requirements taking into consideration ISO/IEC 15288 throughout life-cycle from concept, design, manufacture, operation and maintenance to the final phase, decommissioning, and the study seeks to suggest directions of efficient use to domestic LRT projects.

• 한국건설관리학회논문집
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• 제14권6호
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• pp.22-29
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• 2013

건설사업은 대형화, 복합화, 전문화되면서 목적물의 규모 및 범위가 점차 커지고 다수의 사업참여자가 수행하는 대규모 사업이 국내 외에서 지속적으로 발주되고 있다. 대규모 건설사업의 특성상 사업참여자들 간의 공정별, 분야별 간섭 및 충돌이 발생되면 해결을 위한 시간과 노력이 사업이 진행될수록 더 필요하다. 따라서, 본 연구에서는 인터페이스 해결을 위해 시간적, 물리적으로 유리한 설계단계의 인터페이스 관리방안에 대해 사례현장 적용내용을 바탕으로 제시하였다. 인터페이스 관리 협의체 구성, 체크리스트 도출, LIST 관리, PMIS 적용 등의 실제적인 관리방안을 통해 설계간섭 및 설계변경 관리 노하우가 필요한 타 현장에 적용하여 효과적인 사례로써 활용될 수 있을 것으로 기대된다.

• 시스템엔지니어링학술지
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• 제7권2호
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• pp.7-11
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• 2011

A high-speed railway system represents a typical example of large-scale multi-disciplinary system, consisting of subsystems such as rolling-stock, electrical hardware, electronics, control, information, communication, civil technology etc. The system design and acquisition data of the large-scale system must be the subject under strict configuration control and management. Systems engineering technology development project for Korea next generation High-speed Electric Multiple Unit (HEMU) system in progress is a national large system development project that is not only a large-size and complex but also multi-disciplinary in nature. Therefore, all stakeholders must understand and share the functional and performance requirements of HEMU throughout its life-cycle phases. Also in the test and evaluation phase, all systems requirements must be verified. In 2011, the prototype train manufacturing will be completed. It will do test run on the commercial line and all systems requirements are verified until 2012. For the system verification, the test and evaluation process have to be established before the test trial run. Using a systems engineering tool, the system design database(SDD) with requirements traceability and development process management in the course of the development have to be established. This paper represents the test and evaluation process development based on the SEMP(Systems Engineering Management Plan) developed in the design stage. The test and evaluation process is refined and updated in comparison to the design stage one. The test and evaluation process consists of procedure, test and evaluation method and schedule. So through this process, it is defined that each systems requirements is verified on which test and about what time.

• 비교문화연구
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• 제25권
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• pp.421-452
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• 2011

This writing is about an effort to try to preserve and transmit the materials related to Jing-Ju(京劇) who is the Chinese traditional theatrical art. The plan to preserve the materials of performing arts is very important because its collection and preservation about them are much more particular than other genres. China got the great results in this field because of China Jing-Ju Yinpeixiang (中國京劇音配像) project. Jing-Ju Yinpeixiang project is a kind of project to restore and preserve the materials which reproduced Jing-Ju repertoire by inserting the performance method of Yinpeixiang (音配像: put together images to sounds) by later actors and actresses of Jing-Ju in recordings of 1950s to 1960s by remained famous ones. Also, this is the large scale culture project that more than 170 institutions and more than 3000 persons participated in during the total 21 years that it first started in 1985 and was completed in the end of 2006. Thanks to this project, China got to have the almost perfect materials which reproduced live performances to add the images of junior actors and actresses who accurately imitated performances of 115 famous actors and actresses including each type of role, schools and great actors from 1907 to the end of 20th century in their voices. This is the only method to restore the materials in this world and very creative. It's been 15 years since TV broadcasting first showed its fruition to Chinese people. The Chinese government gave the positive judgement on this project and prepared to hold the big event which celebrated itself this year. But very little is known of this process and there is no any study in Korea. This writing tried to clarify what Jing-Ju Yinpeixiang project is, what it has meant to Chinese people and what results it has gotten after it's been 15 years since the first show was on TV.

• 화약ㆍ발파
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• 제15권2호
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• pp.53-72
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• 1997

It is impossible to precat the behavior of ground soil and structure accurately during underground construction in urban area or excavation in soft ground area because of difference between the assumed design condition and the actual site condition. Therefore, it must be managed by measuring system and correct the difference by real data. Large scale under ground construction in urban area like a seoul subway project has needed for Intelligent Construction technique, a field of the Engineering Contractor. The automated measuring system is developed for the technique. It is described that the procedure and the method of measuring work with application of the automated measuring system.