• Title/Summary/Keyword: complex system products

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An Exploratory Study on the Characteristics of Complex System Product Innovation in Korea: Telecommunication Industry Case (우리 나라 복합시스템 제품의 기술혁신 특성에 대한 탐색적 연구 - 통신시스템 사례를 중심으로 -)

  • 송위진;황혜란;조황희
    • Journal of Korea Technology Innovation Society
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    • v.2 no.2
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    • pp.275-289
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    • 1999
  • This study aims at investigating the stylized facts of the complex system products innovation in Korea. It reviewed the preceeding studies on the innovation patterns of complex system products and selected the issues to be examined in investigating Korean case. In addition, the stylized facts of innovation patterns of Korean complex system products were suggested. The peculiar characteristics of Korean cases are as follows: Korea has succeeded in integrating foreign technologies and components into commercial complex system products and in substituting the foreign system products in the domestic market. However, it faces a great difficulty in upgrading the products to the next generation. It lacks capabilities which facilitate the evolution of system products competing in the world market.

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Autoxidation of Cycloalkenes by the System “Molecular Oxygen-bis(acetylacetonato) Cobalt (II) Complex-butyraldehyde”

  • Fang, Zhao;Tang, Rui-Ren;Zhang, Rui-Rong;Huang, Ke-long
    • Bulletin of the Korean Chemical Society
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    • v.30 no.10
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    • pp.2208-2212
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    • 2009
  • Oxidation of cycloalkenes with $O_2$ promoted by heterogeneous bis(acetylacetonato) cobalt (II) complex catalyst which can be recycled has been performed under mild conditions. It was found that $\beta$-ionone, cyclohexene, 1-methylcyclohexene, and $\alpha$-ionone were efficiently oxidized with $O_2$ in the presence of Co (II) complex and butyraldehyde at $55\;{^{\circ}C}$. A simple treatment of the resulting products led to epoxides as predominant products and a small amounts of allylic oxides, the chemoselectivity for the former being 82.1 - 90.8% with a 70.6 - 98.6% substrate conversion. On the other hand, oxidation of 1-phenylcyclohexene, 1-cyclohex-1-enylethan-1-one, $\alpha$-pinene, and $\beta$-pinene gave allylic oxides as major products.

Regional development through vitalization of agro-industrial complex in seocheongun (농공단지 활성화를 통한 서천군 지역발전방안)

  • Yang, Hee-Suck;Kim, Tai-Cheol
    • Korean Journal of Agricultural Science
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    • v.39 no.2
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    • pp.263-270
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    • 2012
  • The vitalization of Agro-industrial complex could be an alternative to enhance farmers off-farm income and overcome FTA's impacts on the import of agricultural products. However, it is evaluated the governmental policy on the Agro-industrial complex has not been successfully done as expected. The Agro-industrial complex started to be composed in 1984 and the 427 Agro-industrial complex have been composed nationwide by 2011. Meanwhile, three Agro-industrial complex where 61 factories are running have been composed and two Agro-industrial complex are being under construction in Seocheongun as of 2011. It is investigated that there are constraints in the government supporting systems for Agro-industrial complex. They are; Aged and poor infrastructure facilities, Weak marketing competition, Scattered supporting agencies, and Poor loan system, etc. In this respect, the policy of supporting system was suggested and recommended to vitalize Agro-industrial complex in the study. They are; Better loan system, Improving aged facilities, Marketing support, Assisting technology, Suppling labor power, and Forming factory-network, etc.

A Study on Agricultural Interchange for Forming Community - focus on agricultural products contracting cultivation in Kaesong industrial complex - (지역사회 공동체 형성을 위한 농업교류에 관한 연구 - 개성공단 농산물 계약재배를 중심으로 -)

  • Choi, Rack-In
    • Journal of the Korea Society of Computer and Information
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    • v.12 no.5
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    • pp.179-190
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    • 2007
  • This study aimed to present the policy scheme for agricultural interchange forming community group with North Korea through counterplot providing our agricultural products to Korean labor who advanced Kaesong industrial complex and North Korean workers. Trying to promote agricultural products contracting cultivation for forming community group as follows; First, we must understand North Korean political system. Second, on occasion to contract cultivation about limited items, we will drive to consult item and agricultural output with the Ministry of National Unification before contracting with North Korea. Third, dealing with contraction in the concrete. Finally, it must be supported by government and international level.

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DEVELOPMENT OF INFORMATION FLOW RETRIEVAL SYSTEM FOR LARGE-SCALE AND COMPLEX CONSTRUCTION PROJECTS

  • Jinho Shin;Hyun-soo Lee;Moonseo Park;Kwonsik Song
    • International conference on construction engineering and project management
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    • 2013.01a
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    • pp.648-651
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    • 2013
  • The information generated in large-scale and complex construction projects are transferred continuously and transformed into project products on the long span life cycle. Therefore, information flow management is related with the success of project directly. However, certain characteristics of large-scale and complex construction projects make the solving the problem more difficultly. Although several information retrieval systems support the information management system, it is not suitable to grasp information flows. Hence, we developed an information retrieval system specialized with the information flow based on a preceding research. The system consists of a relation-based database and the process information transferring relation inference application module. The system enables project managers to manage the entire project process more efficiently and each project member to work their own task being served the information flow retrieval results.

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Effect of NaCl/Monosodium Glutamate (MSG) Mixture on the Sensorial Properties and Quality Characteristics of Model Meat Products

  • Chun, Ji-Yeon;Kim, Byong-Soo;Lee, Jung-Gyu;Cho, Hyung-Yong;Min, Sang-Gi;Choi, Mi-Jung
    • Food Science of Animal Resources
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    • v.34 no.5
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    • pp.576-581
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    • 2014
  • Sodium chloride is an important ingredient added to most of foods which contributes to flavor enhancement and food preservation but excess intake of sodium chloride may also cause various diseases such as heart diseases, osteoporosis and so on. Therefore, this study was carried out to investigate the effect of monosodium glutamate (MSG) as a salty flavor enhancer on the quality and sensorial properties of the NaCl/MSG complex and actual food system. For characterizing the spray-dried NaCl/MSG complex, surface dimension, morphology, rheology, and saltiness intensity were estimated by increasing MSG (0-2.0%) levels at a fixed NaCl concentration (2.0%). MSG levels had no effect of the characteristics of the NaCl/MSG complex, although the addition of MSG increased the surface dimension of the NaCl/MSG complex significantly (p<0.05). Furthermore, the effect of MSG on enhancing the salty flavor was not observed in the solution of the NaCl/MSG complex. In the case of an actual food system, model meat products (pork patties) were prepared by replacing NaCl with MSG. MSG enhanced the salty flavor, thereby increasing overall acceptability of pork patties. Replacement of NaCl with MSG (<1.0%) did not result in negative sensorial properties of pork patties, although quality deterioration such as high cooking loss was found. Nevertheless, MSG had a potential application in meat product formulation as a salty flavor enhancer or a partial NaCl replacer when meat products were supplemented with binding agents.

Developing the Optimized Method of Reliability-Growth Target Setting for Complex and Repairable Products from Business View

  • So, Young-Kug;Jeon, Young-Rok;Ryu, Byeong-Jin
    • Journal of Applied Reliability
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    • v.15 no.4
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    • pp.248-255
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    • 2015
  • Purpose : The purpose of this research is to develop the optimized method and process in the reliability-growth target setting, especially for complex and repairable system (or products) such as vehicle and airplane, construction equipment. Method : A reliability-growth test plan specifies a scenario to achieve the planned reliability value (or reliability target). The major elements in test planning are reliability-growth starting time and reliability level at that time, reliability-growth rate and reliability-growth target. All of them except a reliability target can be referred to the previous development data and reference researches. The reliability target level is directly influencing to test period (or time) which is related to test and warranty cost together. There are a few researches about the reliability target setting method and but showing the limitations to consider the views of engineering, business and customer together. There is no research how to handle the target setting process in detail. Result : We develop the optimized method and systematic process in reliability target setting with considering such views. This research also establish the new concept as production capability which means company (or supplier) capability to product its products. Conclusion : In this research result, we apply the new method to a few projects and can set the reasonable test planning. The developing results is showing the good balance between the developing cost and warranty cost at market.

On Line Fault Diagnosis in the Large Power System (온라인 전력계통 고장 진단 시스템 개발)

  • Kim Jung-Nyun;Baek Sik-Young;Seo Gyul-Seok
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.54 no.5
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    • pp.205-211
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    • 2005
  • Recently, power system is getting larger and more complex. When the complex power system has a problem, it is very difficult even for the experts to find out where the problem is and to make a timely decision by operators. There have been many studies on these problems but the results are not good enough for applying to real power system. Therefore, power system operators always had to judge the exact state of power system and be preparative for the problems that can occur later. We developed new methods that can be applied to complex power system by dividing the system into small modules. By using 'module', we can combine small modules together to make complex power systems and the knowledge base that is applied to fault diagnosis system. As a result, compared to previously developed diagnosis products, operation time is shortened and the knowledge base is become simpler and clearer, which made online usage capable. This system can be used as a complementary measurement that helps the operator from making any mistakes.

ON-LINE FAULT DIAGNOSIS IN THE LARGE POWER SYSTEM (계통 내 온라인 고장 진단 시스템 개발)

  • Seo, Gyu-Seok;Baek, Young-Sik;Kim, Jung-Nyun
    • Proceedings of the KIEE Conference
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    • 2004.11b
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    • pp.122-124
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    • 2004
  • Recently, power system is getting larger and more complex. When the complex power system has a problem, it is very difficult even for the experts to find out where the problem is and to make a timely decision by operators. There have been many studies on these problems but the results are not good enough for applying to real power system. Therefore power system operators always had to judge the exact state of power system and had to be preparative for the problems that can occur later. We developed new methods that can be applied to complex power system by dividing the system into small modules. By using 'module' we can combine small modules together to make complex power systems and the knowledge base that is applied to fault diagnosis system. As a result, compared to previously developed diagnosis products, operational time has shortened, and the knowledge base becomes simpler and clearer, which made online usage capable. This system can be used as a complementary measure that helps the operator from making any mistakes.

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The Technology Innovation System for Complex System Product Development of Public Research Institutes (공공연구기관에서의 복합제품개발을 위한 기술혁신시스템)

  • 조황희
    • Journal of Korea Technology Innovation Society
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    • v.1 no.3
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    • pp.313-325
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    • 1998
  • Government-Supported Research Institutes(GSRI) have done complex product(CP) development with national needs. The products to be developed have very limited demand. The most important things at CP development are technology innovation through knowledge creation and acquisition. Then, this paper suggests the technology innovation system for CP development. In CP development like satellite, government must do strategic management at national level and technology management at program level. Two managements are tools to achieve the strategic goals. The key points in CP are integration and interface among subsystems and person. From these factors and innovation system, R&D planning and practice are based on sharing and creation of knowledge. CP development projects ought to overlap and parallel for sustainable acquisition and creation of knowledge.

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