• Title, Summary, Keyword: R&D networks

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Government Policies, R&D Networks and Space: The Case of Korean national R&D Projects (정부의 R&D 정책과 연구개발 네트워크의 구조 및 공간적 특성: 한국의 국가연구개발사업 사례를 중심으로)

  • Kim, Hyung-Joo;Lee, Jeong-Hyop;Sohn, Dong-Won
    • Journal of the Economic Geographical Society of Korea
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    • v.11 no.3
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    • pp.319-333
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    • 2008
  • Government R&D policies generate diverse intended and unintended effects including innovator-specific and spatial effects. The Korean government has promoted R&D policies throughout the industrializing period, resulting in R&D networks focused on government research institutes geographically concentrated in the Capital region and Daedeok. This research aims to review the development of the Korean national R&D projects and analyze the recent composition of participants and spatial effects of the Korean national R&D projects. The results show that, in terms of the participants, the R&D networks generated from the Korean national R&D projects have been diversified from dominance of the government research institutes to strategic collaboration between the Korean private firms, universities, and government research institutes. Spatially, the R&D networks are not regionalized, and many private firms in most of the regions have nationwide R&D networks or still rely on the R&D networks in the Capital region.

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Complexity System Characteristics and Dominant Feedback Loops of Industry-University Joint Research R&D Networks: Centered on Power Law and Reinforcing Feedback Loops (산학 공동연구 R&D 네트워크의 복잡계 특성과 지배적 피드백 루프: 거듭제곱법칙과 양의 피드백 루프를 중심으로)

  • Hong, Sung-Ho;Lee, Man-Hyung
    • Korean System Dynamics Review
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    • v.13 no.1
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    • pp.113-131
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    • 2012
  • Applying social network analysis techniques, this study examines complex system characteristics of industry-university joint research R&D networks. In specific, it focuses on whether these R&D networks comply with the power law, whose system typically presents the-rich-get-richer and the-poor-get-poor patterns. The basic data come from 7,751 industry-university joint research projects, all of which were carried out by Daejeon, Chungbuk, and Chungnam-based universities from January 2005 to October 2008. The empirical results reveal that the R&D networks abide by the power law. That is, a handful of business units and universities command an overwhelming majority in the joint links, indicating positive feedback dominance within the system.

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INDIVIDUAL AND SOCIAL INCENTIVES VERSUS R&D NETWORK RESTRICTION

  • ALGHAMDI, MOHAMAD
    • Journal of the Korean Society for Industrial and Applied Mathematics
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    • v.23 no.4
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    • pp.329-350
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    • 2019
  • This paper examines individual and social strategies to form profitable cooperation networks. These two types of strategies measure network stability and efficiency that may not meet in a single network. We apply restrictions on knowledge flows (R&D spillovers) and links formation to integrate these benefits into structures that ensure high outcomes for both strategies. The results suggest that linking the spillovers to the firms' positions and restricting cooperation contribute to reducing the conflict between the individual and social strategies in the development of cooperative networks.

R & D Networks Structure and Spatial Characteristics of Consumer Electronic Industry in Qingdao, China: The Case Study of Qingdao Haier Group in China (중국 가전산업의 연구개발 네트워크 구조와 공간적 특징 - 청도 하이얼(海爾, Haier) 그룹 사례 연구 -)

  • Quan, Guang-Ri;Ryu, Ju-Hyun;Lee, Sung-Cheol
    • Journal of the Economic Geographical Society of Korea
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    • v.15 no.2
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    • pp.292-303
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    • 2012
  • The main purpose of this study is to analyze R&D networks and spatial implications in Qingdao consumer electronics industry agglomeration in China. The characteristics of R&D networks in Qindao consumer electronic industry are as follows. There is a cluster central around large enterprises led by the government and their subcontracting enterprises. However, the degree of collaborative networks in intra-firm, inter-firm, firm-research institutes(including university lab.) is relatively low. Therefore, Large enterprises in Qingdao has stimulated research collaborations with firms and research institutes located in other regions rather than within region. It is likely to show that R&D networks of consumer electronics industry has not been stimulated in Qingdao. Therefore, collaborative R&D networks among firms, research institutes and governments should be stimulated to build regional innovation systems central around consumer electronics industry in Qingdao.

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An Analysis of Spatial Determinants of Inventor Networks in Korea (발명자 네트워크의 공간적 결정요인 분석)

  • Jeong, Jun Ho
    • Journal of the Economic Geographical Society of Korea
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    • v.19 no.1
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    • pp.1-17
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    • 2016
  • This paper attempts to explore the spatial structure of inventor networks and their determinants among 230 shi-gun-gu regions in Korea by investigating the residence of co-inventors engaged in Korean patent applications to the Korean Intellectual Office and exploiting a zero inflated negative binomial model to accommodate an estimation to the count nature of a dependent variable and its excess of zeros. Several variables are found to affect the spatial linkage of inventor networks. Spatial links extend beyond the region if it has more own R&D-related specific assets (private R&D, patent productivity, population, education); if it is physically close to and has technological similarity with the other region. The assets of the other region plays a positive role if, in a similar way, the other region has more R&D-related specific assets.

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Spatial Chracteristics of the Inter-firm Networks in the Industrial Clusters in Seoul : Focus on Computer Industry (기업간 네트워크와 산업집적지의 성장특성 -한국 컴퓨터산업을 사례로-)

  • 김선배
    • Journal of the Korean Regional Science Association
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    • v.13 no.2
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    • pp.55-74
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    • 1997
  • This paper investigates the spatial characteristics of networks, which arise as a firm's strategy to enhance its competitiveness to cope with the changing economic environments characterized by technological changes and increasing competitiveness. The theoretical framework in this study proposes that networks emerge as a firm's strategies to promote its competitiveness through the vertical/horizontal disintegration of the production system. Futhermore, regional industries of networks. The study examines the types of cooperation and the spatial boundary of the computer industry networks in Korea. Questionnaire survey was conducted on 1, 128 computer companies which had more than 10 employees, with 126 questionnaires being used for analysis. In addition, newpaper articles were used to supplement the foregoing work on network characteristics. The review of these articles covers the period from Jan. 1994 to June 1996. Major findings of this study are as follows: The spatial range of cooperative networks varies according to the specific characters of cooperation(R & D, production, and seles). Intralocal networks are being developed in Kangnam and Youido area, the computer industry agglomeration clusres of Seoul. There are the regional differnces in the agents and contents of cooperation. In intra-national R & D and production networks, regional differnces in agglomeratins and non-agglomerations are not detercted. Most networks of this type are found between large firms and small firms. In contrast, foregn R & D and production networks, which are operated mostly by large firms, are found in Kangnam, Youido, and CBD. Intra-national and foreign productino networks are also focused in Kangnam, Youido, and CBD. Small firms are playing an active role in making this type of cooperation possible. In the perspective of localization-globalization, Korean computer industry can be analyzed in two respects: industrial and regional. The localization of small firms and the localization-globalization of large firms' networks are being developed in industrial contexts, while the localization-globalization of agglomerations and the localization of non-agglomerations networks are being developed in regional contexts. As networks for the localization-globalization of industry are growing in agglomerations, interfirm networks could be related to trends in the formation or intensification of industrial agglomerations. industrial agglomeration areas function as a facilitator of localization through subcontracts, intraregional network and interregional network. They also facilitate globalization via foregn networks. In non-agglomeratin areas, localization networks, which are connected with agglomeration areas via subcontracting, interregional R & D. or production cooperation.

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Visualizing Geographical Contexts in Social Networks

  • Lee, Yang-Won;Kim, Hyung-Joo
    • Spatial Information Research
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    • v.14 no.4
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    • pp.391-401
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    • 2006
  • We propose a method for geographically enhanced representation of social networks and implement a Web-based 3D visualization of geographical contexts in social networks. A renovated social network graph is illustrated by using two key components: (i) GWCMs (geographically weighted centrality measures) that reflect the differences in interaction intensity and spatial proximity among nodes and (ii) MSNG (map-integrated social network graph) that incorporates the GWCMs and the geographically referenced arrangement of nodes on a choroplethic map. For the integrated 3D visualization of the renovated social network graph, we employ X3D (Extensible 3D), a standard 3D authoring tool for the Web. An experimental case study of regional R&D collaboration provides a visual clue to geographical contexts in social networks including how the social centralization relates to spatial centralization.

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Novel Rate Control Scheme for Low Delay Video Coding of HEVC

  • Wu, Wei;Liu, Jiong;Feng, Lei
    • ETRI Journal
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    • v.38 no.1
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    • pp.185-194
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    • 2016
  • In this paper, a novel rate control scheme for low delay video coding of High Efficiency Video Coding (HEVC) is proposed. The proposed scheme is developed by considering a new temporal prediction structure of HEVC. In the proposed scheme, the relationship between bit rate and quantization step is exploited firstly to formulate an accurate quadratic rate-quantization (R-Q) model. Secondly, a method of determining the quantization parameters (QPs) for the first frames within a group of pictures is proposed. Thirdly, an accurate frame-level bit allocation method is proposed for HEVC. Finally, based on the proposed R-Q model and the target bit allocated for the frame, the QPs are predicted for coding tree units by using rate-distortion (R-D) optimization. We compare our scheme against that of three other state-of-the-art rate control schemes. Experimental results show that the proposed rate control scheme can increase the Bjøntegaard delta peak signal-to-noise ratio by 0.65 dB and 0.09 dB on average compared with the JCTVC-I0094 and JCTVC-M0036 schemes, respectively, both of which have been implemented in an HEVC test model encoder; furthermore, the proposed scheme achieves a similar R-D performance to Wang's scheme, as well as obtaining the smallest bit rate mismatch error of all the schemes.

Influence of R&D intensity on Innovation Performance in the Korean Pharmaceutical Industry: Focusing on the Moderating Effects of R&D Collaboration

  • Kim, Dae-Joong;Om, Kiyong
    • Knowledge Management Research
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    • v.19 no.3
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    • pp.189-223
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    • 2018
  • This paper examined the effect of innovation networks comprising research and development (R&D) collaboration on innovation performance of Korean pharmaceutical firms. As co-assigned patents and co-affiliated publications are common technical outcomes of successful R&D collaboration in the pharmaceutical industry, social network analysis technique was applied for analyzing innovation networks through patent and publication data. Results of Social network analysis indicated that a small set of highly innovative firms in the Korean pharmaceutical industry were actively involved in patenting and publishing. And the analysis of structural equation model found the followings: (1) R&D intensity significantly affected patenting, publication and new drug development, (2) the activity of patenting and publishing was positively related with the innovation performance measured by new drug development, and (3) R&D collaboration in terms of degree centrality of co-patent network played significant moderating roles on the relationships among R&D intensity, patenting, and new drug development. These findings are expected to be helpful to researchers as well as policy-makers to devise innovation-promoting policies in the Korean pharmaceutical industry. Discussions and limitations of the study are provided in the last part.

Distributed Fusion Estimation for Sensor Network

  • Song, Il Young;Song, Jin Mo;Jeong, Woong Ji;Gong, Myoung Sool
    • Journal of Sensor Science and Technology
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    • v.28 no.5
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    • pp.277-283
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    • 2019
  • In this paper, we propose a distributed fusion estimation for sensor networks using a receding horizon strategy. Communication channels were modelled as Markov jump systems, and a posterior probability distribution for communication channel characteristics was calculated and incorporated into the filter to allow distributed fusion estimation to handle path loss observation situations automatically. To implement distributed fusion estimation, a Kalman-Consensus filter was then used to obtain the average consensus, based on the estimates of sensors randomly distributed across sensor networks. The advantages of the proposed algorithms were then verified using a large-scale sensor network example.