• Title/Summary/Keyword: Building Infrastructure

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An Exploratory Study on Key Factors of SOA Success (SOA 성공의 영향요인에 대한 탐색적 연구)

  • Cho, Nam-Jae;Kim, Ji-Yun;Yun, Young-Don
    • Information Systems Review
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    • v.12 no.2
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    • pp.105-119
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    • 2010
  • SOA has become the focus of attention as it is perceived as a concept toward integrative service which helps companies respond quickly to the changes in market needs. This study is aimed to find out success factors for building SOA. We carried out two case studies on companies that adopted SOA successfully in Korea and conducted a survey to collect opinions from experts and experienced managers whose job is related to SOA. The critical successful factors found in this study include: 1) establishment of the SOA taskforce based on CIO's strong support, 2) formation of the corporate-wide consensus and the adoption of standards, 3) active user participation in defining services and obliterating duplication, 4) accomplishment of flexibility in services and business agility based on integrated infrastructure, and 5) securing project budget and consistent support by way of using measurement index for SOA investment effects.

Development of Structure Dynamic Characteristics Analysis System Prototype using Image Processing Technique (영상처리기법을 이용한 구조물 동특성 분석 시스템 프로토타입 개발)

  • Jo, Byung-Wan;Lee, Yun-Sung;Kim, Jung-Hoon;Kim, Do-Keun;Yoon, Kwang-Won
    • The Journal of the Korea Contents Association
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    • v.16 no.3
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    • pp.11-21
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    • 2016
  • Recently, structure safety management techniques using cutting-edge technology(Displacement senor, sensor of acceleration) has emerged as an important issue owing to the aging of infrastructure such as bridge and building. In general, the structural monitoring system for structure safety management is based on IT technology and it is expensive to install. In this paper developed an image-based structure dynamic characteristic analysis system prototype to assess the damage of structure in a more cost-effective way than traditional structure health monitoring system. The inspector can take a video of buildings or other structures with digital camera or any other devices that is passible to take video, and then using NCC calculation for image processing technique to get natural frequency. This system is analysis of damage of the structure using a compare between the frequency response ratio and functions when problems are occurs send alarm to administrator. This system is easier to install and remove than previous monitoring sensor in economical way.

Factors Influencing Cost Overruns in Construction Projects of International Contractors in Vietnam

  • VU, Thong Quoc;PHAM, Cuong Phu;NGUYEN, Thu Anh;NGUYEN, Phong Thanh;PHAN, Phuong Thanh;NGUYEN, Quyen Le Hoang Thuy To
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.9
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    • pp.389-400
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    • 2020
  • A construction project is a designed product made up of labors, materials, and installations in the project positioned on the ground and may include the underground and ground section, and the section in water or on the water surface. It is a civil, industrial, transport, agricultural and rural development, infrastructure, or some other. A key phase in the life cycle of these construction projects is the implementation when building products are made directly with workers, equipment, materials, and managers. If there is a lack of management experience, information, and problem-solving solutions to tackle the risks faced by contractors, especially foreign ones, will fail in controlling the project's cost. This study was conducted with investigations, discussions, and evaluation of the factors that lead to cost overruns in the construction projects of international contractors in Vietnam. The principal component analysis (PCA) showed that those factors that influence cost overruns these construction projects fall into five general groups, including factors related to (i) the owners, (ii) the foreign contractors, (iii) the subcontractors and suppliers, (iv) state management, and (v) the project itself. Besides, the study proposes solutions to limit cost overruns in construction projects and improve the profitability of international contractors in Vietnam.

Analysis of Threat Agent for Important Information Systems (중요 정보시스템 위협원에 대한 분석)

  • Kim, Tai-Hoon;Kim, Seok-Soo;Park, Gil-Cheol
    • Journal of Advanced Navigation Technology
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    • v.11 no.2
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    • pp.203-208
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    • 2007
  • Because the networks and systems become more complex, the implementation of the security countermeasures for important Information Systems becomes more critical consideration. The designers and developers of the security policy should recognize the importance of building security countermeasures by using both technical and non-technical methods, such as personnel and operational facts. Security countermeasures may be made for formulating an effective overall security solution to address threats at all layers of the information infrastructure. But all these works can be done after assuming who is the threat agent. In this paper we identify the treat agents for information systems, summarize the characteristics of threat agents, and apply weighting factors to them.

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Design and Implementation of Charger Monitoring System Based on CAN Protocol (CAN 통신 기반 충전 모니터링 시스템 설계 및 구현)

  • Choo, Yeon-Gyu;Kim, Hyun-Deok
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.16 no.3
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    • pp.541-548
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    • 2012
  • On this paper, we proposed a design rule of charger monitoring system which allow us to watch the charging status and verify it for building the electric chargers infrastructure by spread of electric vehicle. Gathering the charging status of battery by proposed system makes us to enhance the charging algorithm, to interface with BMS(Battery Management System) of electric vehicle, to control the charging process with users. Because the technology of rapid charging is dependant upon various factors such as a performance and stability of battery. We proposed the monitoring system of rapid charger based on CAN protocol that can watch a working status of rapid charger including the charging status of battery with real time and can reduce the charging time of battery with optimized status. We also implement it and evaluate its performance.

A study on the developments of STCW training of seafarers on ships applying in the IGF Code

  • Han, Se-Hyun;Lee, Young-Chan
    • Journal of Advanced Marine Engineering and Technology
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    • v.39 no.10
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    • pp.1054-1061
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    • 2015
  • The International Maritime Organization (IMO) has been regulating emissions by making mandatory the compliance with institutions aimed at protecting air quality such as the Energy Efficiency Design Index (EEDI), Ship Energy Efficiency Management Plan (SEEMP) and Tier III. Under the circumstances, one of the response measures considered to be the most feasible is the replacement of existing marine fuel with Liquefied Natural Gas (LNG). The industry has been preemptively building infrastructure and developing and spreading engine technology to enable the use of LNG-fueled ships. The IMO, in turn, recently adopted the International Code of Safety for Ships Using Gases or Other Low-Flash-Point Fuels (IGF Code) as an institutional measure. Thus, it is required to comply with regulations on safety-related design and systems focused on response against potential risk for LNG-fueled ships, in which low-flash-point fuel is handled in the engine room. Especially, the Standards of Training, Certification and Watchkeeping (STCW) Convention was amended accordingly. It has adopted the qualification and training requirements for seafarers who are to provide service aboard ships subject to the IGF Code exemplified by LNG-fueled ships. The expansion in the use of LNG-fueled ships and relevant facilities in fact is expected to increase demand for talents. Thus, the time is ripe to develop methods to set up appropriate STCW training courses for seafarers who board ships subject to the IGF Code. In this study, the STCW Convention and existing STCW training courses applied to seafarers offering service aboard ships subject to the IGF Code are reviewed. The results were reflected to propose ways to design new STCW training courses needed for ships subject to the IGF Code and to identify and improve insufficiencies of the STCW Convention in relation to the IGF Code.

The Role of Decision-Makers' Platform for Securing Water by Moving Forward to Global Challenges (범지구적 물 문제 해결을 위한 정책입안자 네트워크의 역할)

  • Park, Ji-Seon
    • Proceedings of the Korea Water Resources Association Conference
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    • 2011.05a
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    • pp.21-21
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    • 2011
  • Many Asian countries are suffered from various problems on water, which include the need for increased access to improves water supplies and sanitation through investments in infrastructure and capacity building, the balances water management system between development and ecosystem, and the need to reduce the human populations'vulnerability to water-related disasters, in particular, from climate variability and evolution. Decison makers are the most influential people in policy making and solving global water problems is central issue in eradicating poverty and achieving sustainable development (MDG). They across the world form an integral part of the architecture of national or regional governance. Their role covers a range of decision-making processes including passing legislation, scrutinizing government policy, and representing citizen through the election. We must ensure that these quiet but important issues get the political space, financial priority and public attention they deserve. Regional bodies such as the EU have also enacted legislation which introduces rules on water quality and other enforceable mattera across state boundaries. With this growing body of laws and policies on water issues, the role of decision makers is growing. Recognizing this role, decison makers' platform is essential to provide an opportunity to discuss crucial water issues in each country or region and for the purpose "2010 Parliaments for Water in Asia" has planned and organized to investigate our common issues and goals. During the meeting, we have an opportunity to observe water policy of Bangladesh, Bhutan, China, Mongolia, New Zealand and the Philippines and share the views on what needs to be done to move forward by decision makers for the future of water. In conclusion, the process of developing the decision makers' platform in each region would be ultimately essential point to increase the awareness of the developed and developing countries' roles, knowledge to clarify roles and responsibilities of each stake holders and finally be a major actor for resolving not only water challenges also issues of human settlements.

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Management of GHG Emissions from the Public Organizaions in Land and Housing Construction Sector (토지·주택 건설부문 공공기관의 온실가스 배출량 관리방안 고찰)

  • Lee, Ki-Hong;Yoo, Jung-Hyun;Rhim, Joo-Ho;Jeon, Seon-Jeong
    • Land and Housing Review
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    • v.2 no.3
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    • pp.307-313
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    • 2011
  • This study was aimed to suggest a management strategy of GHG emissions for the public organizations in land and housing costruction sector. As public organizations' businesses are characterized as 'public' and 'comprehensive', these characteristics should be considered in scoping emissions, setting-up reduction target, building GHG inventory, and establishing management system. Since public organizations' activities in construction sector involve a wide range of social infrastructure construction projects, it is not easy to account their actions to reduce GHG emissions quantitatively. Therefore, this study suggested that a twofold approach is suitable for public organizations in construction area, classifying the measurable reductions and the immeasurable actions according to the their business characteristics. To give a concrete example, a GHG emission management system for the Korea Land and Housing Corporation (LH) was proposed.

A Value-For-Money Model of BTL Projects for Educational Facilities (교육시설 BTL 사업의 투자가치 평가모형 구축)

  • Kim, Jang-Young;Son, Ki-Young;Kook, Dong-Hoon;Kim, Sun-Kuk
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2006.11a
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    • pp.87-91
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    • 2006
  • After reformation of 'the law of private investment on social infrastructure' on January 2005, BTL of educational facilities can improve the education circumstance at early stage, however there are trial and error, problems of execution as well. The key of this problem is not only related to whether BTL project is more reasonable, but it also leads to the proper performance of eligibility analysis on BTL. Therefore, it lead to the proper carryout of eligibility analysis on BTL. In order to promote effective BTL project of educational facilities, this study analyzes problems of existing model and creates the evaluation model for solving this problem. In this study, the evaluation model of investment on BTL has more quick ,accuracy and useful effect than previous one, if it is applied on eligibility stage. Moreover, this method could be applied to public building, SOC facilities effectively based on being modified as each characteristics of structure suitably.

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Efficient Authentication of Aggregation Queries for Outsourced Databases (아웃소싱 데이터베이스에서 집계 질의를 위한 효율적인 인증 기법)

  • Shin, Jongmin;Shim, Kyuseok
    • Journal of KIISE
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    • v.44 no.7
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    • pp.703-709
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    • 2017
  • Outsourcing databases is to offload storage and computationally intensive tasks to the third party server. Therefore, data owners can manage big data, and handle queries from clients, without building a costly infrastructure. However, because of the insecurity of network systems, the third-party server may be untrusted, thus the query results from the server may be tampered with. This problem has motivated significant research efforts on authenticating various queries such as range query, kNN query, function query, etc. Although aggregation queries play a key role in analyzing big data, authenticating aggregation queries has not been extensively studied, and the previous works are not efficient for data with high dimension or a large number of distinct values. In this paper, we propose the AMR-tree that is a data structure, applied to authenticate aggregation queries. We also propose an efficient proof construction method and a verification method with the AMR-tree. Furthermore, we validate the performance of the proposed algorithm by conducting various experiments through changing parameters such as the number of distinct values, the number of records, and the dimension of data.