메뉴 건너뛰기




Volumn 39, Issue 3, 2005, Pages 495-522

The effects of scientific regional opportunities in science-technology flows: Evidence from scientific literature in firms patent data

Author keywords

[No Author keywords available]

Indexed keywords

INNOVATION; INTELLECTUAL PROPERTY RIGHTS; LITERATURE REVIEW; REGIONAL ECONOMY; SCIENCE AND TECHNOLOGY;

EID: 28744445009     PISSN: 05701864     EISSN: 14320592     Source Type: Journal    
DOI: 10.1007/s00168-004-0225-6     Document Type: Article
Times cited : (12)

References (65)
  • 1
    • 0345356390 scopus 로고    scopus 로고
    • Science-technology flows in Spanish regions. An analysis of scientific citations in patents
    • Acosta M, Coronado D (2003) Science-technology flows in Spanish regions. An analysis of scientific citations in patents. Research Policy 32: 1783-1803
    • (2003) Research Policy , vol.32 , pp. 1783-1803
    • Acosta, M.1    Coronado, D.2
  • 2
    • 0035604910 scopus 로고    scopus 로고
    • University-to-industry knowledge transfer: Literature review and unanswered questions
    • Agrawal A (2001) University-to-industry knowledge transfer: Literature review and unanswered questions. International Journal of Management Reviews 3: 285-302
    • (2001) International Journal of Management Reviews , vol.3 , pp. 285-302
    • Agrawal, A.1
  • 3
    • 0000069829 scopus 로고    scopus 로고
    • Local geographic spillovers between university research and high technology innovations
    • Anselin L, Varga A, Acs ZJ (1997) Local geographic spillovers between university research and high technology innovations. Journal of Urban Economics 42: 422-448
    • (1997) Journal of Urban Economics , vol.42 , pp. 422-448
    • Anselin, L.1    Varga, A.2    Acs, Z.J.3
  • 4
    • 0033752772 scopus 로고    scopus 로고
    • Geographic and sectoral characteristics of academic knowledge externalities
    • Anselin L, Varga A, Acs ZJ (2000) Geographic and sectoral characteristics of academic knowledge externalities. Papers of Regional Science 79: 435-443
    • (2000) Papers of Regional Science , vol.79 , pp. 435-443
    • Anselin, L.1    Varga, A.2    Acs, Z.J.3
  • 5
    • 0008482329 scopus 로고    scopus 로고
    • R&D Spillovers and the geography of innovation and Production
    • Audretsch DB, Feldman MP (1996) R&D Spillovers and the geography of innovation and Production. American Economic Review 86: 630-640
    • (1996) American Economic Review , vol.86 , pp. 630-640
    • Audretsch, D.B.1    Feldman, M.P.2
  • 6
    • 1542708571 scopus 로고    scopus 로고
    • Company-scientist locational links: The case of biotechnology
    • Audretsch DB, Stephan P (1996) Company-scientist locational links: The case of biotechnology. American Economic Review 86
    • (1996) American Economic Review , pp. 86
    • Audretsch, D.B.1    Stephan, P.2
  • 7
    • 0039543120 scopus 로고    scopus 로고
    • Real options, patents, productivity and market value: Evidence from a panel of British firms
    • The Institute for Fiscal Studies Working Paper 00/21
    • Bloom N, Van Reenen J (2000) Real options, patents, productivity and market value: Evidence from a panel of British firms. The Institute for Fiscal Studies, Working Paper 00/21
    • (2000)
    • Bloom, N.1    Van Reenen, J.2
  • 8
    • 0001027388 scopus 로고    scopus 로고
    • Market share, market value and innovation in a panel of British Manufacturing Firms
    • Blundell R, Griffith R, Van Reenen J (1999) Market share, market value and innovation in a panel of British Manufacturing Firms. Review of Economic Studies 66: 529-554
    • (1999) Review of Economic Studies , vol.66 , pp. 529-554
    • Blundell, R.1    Griffith, R.2    Van Reenen, J.3
  • 9
    • 45749144216 scopus 로고    scopus 로고
    • Exploring the link between academic science and industrial innovation: The case of California's research universities
    • 2001 NBER Conference
    • Branstetter L (2001) Exploring the link between academic science and industrial innovation: The case of California's research universities. 2001 NBER Conference
    • (2001)
    • Branstetter, L.1
  • 10
    • 44949287625 scopus 로고
    • Regression based test for overdispersion in the Poisson model
    • Cameron AC, Trivedi PK (1990) Regression based test for overdispersion in the Poisson model. Journal of Econometrics 46: 347-364
    • (1990) Journal of Econometrics , vol.46 , pp. 347-364
    • Cameron, A.C.1    Trivedi, P.K.2
  • 11
    • 84986409852 scopus 로고
    • Econometric models based on count data: Comparisons and applications of some estimators and tests
    • Cameron AC, Trivedi PK (1986) Econometric models based on count data: Comparisons and applications of some estimators and tests. Journal of Applied Econometrics 1: 29-54
    • (1986) Journal of Applied Econometrics , vol.1 , pp. 29-54
    • Cameron, A.C.1    Trivedi, P.K.2
  • 13
    • 0032388957 scopus 로고    scopus 로고
    • Absorptive capacity, coauthoring behavior, and the organization of research in drug discovery
    • Cockburn IM, Henderson RM (1998) Absorptive capacity, coauthoring behavior, and the organization of research in drug discovery. The Journal of Industrial Economics 46: 157-182
    • (1998) The Journal of Industrial Economics , vol.46 , pp. 157-182
    • Cockburn, I.M.1    Henderson, R.M.2
  • 14
    • 0000041791 scopus 로고
    • Innovation and learning: The two faces of R&D
    • Cohen WM, Levinthal DA (1989) Innovation and learning: The two faces of R&D. The Economic Journal 99: 569-596
    • (1989) The Economic Journal , vol.99 , pp. 569-596
    • Cohen, W.M.1    Levinthal, D.A.2
  • 15
    • 84936166194 scopus 로고
    • Absorptive capacity: A new perspective on learning and innovation
    • Cohen WM, Levinthal DA (1990) Absorptive capacity: A new perspective on learning and innovation. Administrative Science Quarterly 35: 128-152
    • (1990) Administrative Science Quarterly , vol.35 , pp. 128-152
    • Cohen, W.M.1    Levinthal, D.A.2
  • 16
    • 0006496642 scopus 로고
    • Citations in patents to the basic research literature
    • Collins P, Wyatt S (1988) Citations in patents to the basic research literature. Research Policy 17: 65-77
    • (1988) Research Policy , vol.17 , pp. 65-77
    • Collins, P.1    Wyatt, S.2
  • 17
    • 0001309008 scopus 로고    scopus 로고
    • Research and development, competition and innovation. Pseudomaximum likelihood and simulated maximum likelihood methods applied to count data models with heterogeneity
    • Crepon B, Duguet E (1997) Research and development, competition and innovation. Pseudomaximum likelihood and simulated maximum likelihood methods applied to count data models with heterogeneity. Journal of Econometrics 79: 355-378
    • (1997) Journal of Econometrics , vol.79 , pp. 355-378
    • Crepon, B.1    Duguet, E.2
  • 18
    • 0002521839 scopus 로고
    • Limit theorems for regressions with unequal and dependent errors
    • LeCam L, Neyman J (eds) University of California Press Berkeley
    • Eicker F (1967) Limit theorems for regressions with unequal and dependent errors. In: LeCam L, Neyman J (eds) Proceedings of the Fifth Berkeley Symposium on Mathematical Statistics and Probability. University of California Press Berkeley, pp. 59-82
    • (1967) Proceedings of the Fifth Berkeley Symposium on Mathematical Statistics and Probability , pp. 59-82
    • Eicker, F.1
  • 19
    • 0028600704 scopus 로고
    • The geographic sources of innovation: Technological infrastructure and product innovation in the United States
    • Feldman M, Florida R (1994) The geographic sources of innovation: Technological infrastructure and product innovation in the United States. Annals of the Association of American Geographers 84: 210-229
    • (1994) Annals of the Association of American Geographers , vol.84 , pp. 210-229
    • Feldman, M.1    Florida, R.2
  • 20
    • 0037929557 scopus 로고    scopus 로고
    • Spatial knowledge spillovers and university research: Evidence from austria
    • Fischer M, Varga A (2003) Spatial knowledge spillovers and university research: Evidence from austria. Annals of Regional Science 37: 303-322
    • (2003) Annals of Regional Science , vol.37 , pp. 303-322
    • Fischer, M.1    Varga, A.2
  • 21
    • 26444610182 scopus 로고    scopus 로고
    • Enterprise-University cooperation and the role of public research institutions in regional innovation systems
    • Fritsch M, Schwirten C (1999) Enterprise-University cooperation and the role of public research institutions in regional innovation systems. Industry and Innovation 6: 69-83
    • (1999) Industry and Innovation , vol.6 , pp. 69-83
    • Fritsch, M.1    Schwirten, C.2
  • 23
    • 0004004166 scopus 로고
    • Accounting for excess zeros and sample selection in poisson and negative binomial regression models
    • Working Paper no EC-94-10, Department of Economics, Stern School of Business, New York University
    • Greene W (1994) Accounting for excess zeros and sample selection in poisson and negative binomial regression models. Working Paper no EC-94-10, Department of Economics, Stern School of Business, New York University
    • (1994)
    • Greene, W.1
  • 24
    • 0002999769 scopus 로고
    • Issues in assessing the contribution of research and development to productivity growth
    • Griliches Z (1979) Issues in assessing the contribution of research and development to productivity growth. Bell Journal of Economics 10: 92-116.
    • (1979) Bell Journal of Economics , vol.10 , pp. 92-116
    • Griliches, Z.1
  • 25
    • 33847015546 scopus 로고
    • Market value, R&D and patents
    • Griliches Z (1981) Market value, R&D and patents. Economic Letters 7: 183-187
    • (1981) Economic Letters , vol.7 , pp. 183-187
    • Griliches, Z.1
  • 26
    • 0002212293 scopus 로고
    • Perception of scientification as measured by referencing between patents and papers
    • Grupp H (ed) Springer Berlin, Heidelberg New York
    • Grupp H, Schmoch U (1992) Perception of scientification as measured by referencing between patents and papers. In: Grupp H (ed) Dynamics of Science-Based Innovation. Springer Berlin, Heidelberg New York, pp. 73-128
    • (1992) Dynamics of Science-Based Innovation , pp. 73-128
    • Grupp, H.1    Schmoch, U.2
  • 27
    • 0003915829 scopus 로고    scopus 로고
    • Market value and patent citations: A first look
    • NBER Working Paper 7741
    • Hall B, Jaffe A, Trajtenberg M (2001) Market value and patent citations: a first look. NBER Working Paper 7741
    • (2001)
    • Hall, B.1    Jaffe, A.2    Trajtenberg, M.3
  • 28
    • 0001459704 scopus 로고
    • The real effects of academic research
    • Jaffe A (1989) The real effects of academic research. American Economic Review 79: 957-970
    • (1989) American Economic Review , vol.79 , pp. 957-970
    • Jaffe, A.1
  • 29
    • 0032378680 scopus 로고    scopus 로고
    • Banks Evidence from patents and patent citations on the impact of NASA and other labs on commercial innovations
    • Jaffe A, Fogarty M, Banks (1998) Evidence from patents and patent citations on the impact of NASA and other labs on commercial innovations. Journal of Industrial Economics 46 (2)
    • (1998) Journal of Industrial Economics , vol.46 , Issue.2
    • Jaffe, A.1    Fogarty, M.2
  • 30
    • 84960609570 scopus 로고
    • Geographic localisation of knowledge spillovers as evidenced by patent citations
    • Jaffe A, Trajtenberg M, Henderson R (1993) Geographic localisation of knowledge spillovers as evidenced by patent citations. Quarterly Journal of Economics 108: 577-598
    • (1993) Quarterly Journal of Economics , vol.108 , pp. 577-598
    • Jaffe, A.1    Trajtenberg, M.2    Henderson, R.3
  • 31
    • 0003573428 scopus 로고    scopus 로고
    • Flows of knowledge from Universities and Federal Labs: Modelling the flow of patent citations over time and across institutional and geographic boundaries
    • NBER working paper no 5712
    • Jaffe A, Trajtenberg M (1996) Flows of knowledge from Universities and Federal Labs: Modelling the flow of patent citations over time and across institutional and geographic boundaries. NBER working paper no 5712
    • (1996)
    • Jaffe, A.1    Trajtenberg, M.2
  • 32
    • 1842514274 scopus 로고
    • On the sources and significance of interindustry differences in technological opportunities
    • Klevorick AK, Levin R, Nelson R, Winter S (1995) On the sources and significance of interindustry differences in technological opportunities. Research Policy 24: 342-349
    • (1995) Research Policy , vol.24 , pp. 342-349
    • Klevorick, A.K.1    Levin, R.2    Nelson, R.3    Winter, S.4
  • 33
    • 0026821975 scopus 로고
    • Cero-inflated poisson regression, with an application to the defects in manufacturing
    • Lambert D (1992) Cero-inflated poisson regression, with an application to the defects in manufacturing. Technometrics 34: 1-14
    • (1992) Technometrics , vol.34 , pp. 1-14
    • Lambert, D.1
  • 34
    • 0011624260 scopus 로고    scopus 로고
    • The many faces of a asortive capacity: Spillovers of Copper interconnect technology for semiconductor chips
    • Mimeo, MIT
    • Lim K (2000) The many faces of a asortive capacity: Spillovers of Copper interconnect technology for semiconductor chips. Mimeo, MIT
    • (2000)
    • Lim, K.1
  • 35
    • 0004030294 scopus 로고    scopus 로고
    • The globalization learning economy: Implications for innovation policy
    • Report for the DG XII Commission
    • Lundvall B, Borras S (1997) The globalization learning economy: Implications for innovation policy. Report for the DG XII Commission
    • (1997)
    • Lundvall, B.1    Borras, S.2
  • 36
    • 4344716559 scopus 로고    scopus 로고
    • The contribution of academic-industry interaction to product innovation: The case of New York State's medical device sector
    • MacPherson A (2002) The contribution of academic-industry interaction to product innovation: The case of New York State's medical device sector. Papers in Regional Science 81: 121-129
    • (2002) Papers in Regional Science , vol.81 , pp. 121-129
    • MacPherson, A.1
  • 37
    • 0002034724 scopus 로고
    • Academic research and innovation
    • Mansfield E (1991) Academic research and innovation. Research Policy 20: 1-12
    • (1991) Research Policy , vol.20 , pp. 1-12
    • Mansfield, E.1
  • 38
    • 0002437383 scopus 로고    scopus 로고
    • Academic research and industrial innovation: An update of empirical findings
    • Mansfield E (1998) Academic research and industrial innovation: An update of empirical findings. Research Policy 26: 773-776
    • (1998) Research Policy , vol.26 , pp. 773-776
    • Mansfield, E.1
  • 39
    • 28744433841 scopus 로고    scopus 로고
    • Knowledge spillovers in Europe. A patent citation analysis
    • Paper presented at the CRENOS conference on "Technological externalities and spatial localisation"
    • Maurseth PB, Verspagen B (1999) Knowledge spillovers in Europe. A patent citation analysis. Paper presented at the CRENOS conference on "Technological externalities and spatial localisation"
    • (1999)
    • Maurseth, P.B.1    Verspagen, B.2
  • 40
    • 0001292109 scopus 로고    scopus 로고
    • An analysis of the critical role of public science in innovation: The case of biotechnology
    • Mcmillan GS, Narin F, Deeds DL (2000) An analysis of the critical role of public science in innovation: The case of biotechnology. Research Policy 29: 1-8
    • (2000) Research Policy , vol.29 , pp. 1-8
    • Mcmillan, G.S.1    Narin, F.2    Deeds, D.L.3
  • 41
    • 0001739118 scopus 로고    scopus 로고
    • Does science push technology? Patents citing scientific literature
    • Meyer M (2000a) Does science push technology? Patents citing scientific literature. Research Policy 29: 409-434
    • (2000) Research Policy , vol.29 , pp. 409-434
    • Meyer, M.1
  • 42
    • 0012187015 scopus 로고    scopus 로고
    • What is special about patent citations? Differences between scientific and patent citations
    • Meyer M(2000b) What is special about patent citations? Differences between scientific and patent citations. Scientometrics 49: 93-123
    • (2000) Scientometrics , vol.49 , pp. 93-123
    • Meyer, M.1
  • 43
    • 0038533865 scopus 로고    scopus 로고
    • Patent citations in a novel field of technology. What can they tell about interactions between emerging communities of science and technology?
    • Meyer M (2000c) Patent citations in a novel field of technology. What can they tell about interactions between emerging communities of science and technology? Scientometrics 48: 151-178
    • (2000) Scientometrics , vol.48 , pp. 151-178
    • Meyer, M.1
  • 44
    • 0040081683 scopus 로고    scopus 로고
    • Tracing knowledge flows in innovation systems
    • Meyer M (2002) Tracing knowledge flows in innovation systems. Scientometrics 54 (2): 193-212
    • (2002) Scientometrics , vol.54 , Issue.2 , pp. 193-212
    • Meyer, M.1
  • 45
    • 0001492982 scopus 로고    scopus 로고
    • Science-based technologies: University-industry interactions in four fields
    • Meyer-Krahmer F, Schmoch U (1998) Science-based technologies: university-industry interactions in four fields. Research Policy 27: 835-851
    • (1998) Research Policy , vol.27 , pp. 835-851
    • Meyer-Krahmer, F.1    Schmoch, U.2
  • 46
    • 0000854272 scopus 로고
    • Specification and testing of some modified count data models
    • Mullahy J (1986) Specification and testing of some modified count data models. Journal of Econometrics 33: 341-365
    • (1986) Journal of Econometrics , vol.33 , pp. 341-365
    • Mullahy, J.1
  • 47
    • 0037982342 scopus 로고
    • Linkage between agency-supported research and patented industrial technology
    • Narin F, Hamilton KS, Olivastro D (1995) Linkage between agency-supported research and patented industrial technology. Research Evaluation 5: 183-187
    • (1995) Research Evaluation , vol.5 , pp. 183-187
    • Narin, F.1    Hamilton, K.S.2    Olivastro, D.3
  • 48
    • 0003332120 scopus 로고    scopus 로고
    • The increasing linkage between US technology and public science
    • Narin F, Hamilton KS, Olivastro D (1997) The increasing linkage between US technology and public science. Research Policy 26: 317-330
    • (1997) Research Policy , vol.26 , pp. 317-330
    • Narin, F.1    Hamilton, K.S.2    Olivastro, D.3
  • 49
    • 33749139468 scopus 로고
    • Status report: Linkage between technology and science
    • Narin F, Olivastro D (1992) Status report: Linkage between technology and science. Research Policy 21: 237-249
    • (1992) Research Policy , vol.21 , pp. 237-249
    • Narin, F.1    Olivastro, D.2
  • 50
    • 0040633427 scopus 로고    scopus 로고
    • Linkage between patents and papers: An interim EPO/US comparison
    • Narin F, Olivastro D (1998) Linkage between patents and papers: An interim EPO/US comparison. Scientometrics 41: 51-59
    • (1998) Scientometrics , vol.41 , pp. 51-59
    • Narin, F.1    Olivastro, D.2
  • 51
    • 0001521231 scopus 로고
    • Exploring the science and technology interface: Inventor-author relations in laser medicine research
    • Noyons ECM, Van Raan AFJ, Grupp H, Schmoch U (1994) Exploring the science and technology interface: Inventor-author relations in laser medicine research. Research Policy 23: 443-457
    • (1994) Research Policy , vol.23 , pp. 443-457
    • Noyons, E.C.M.1    Van Raan, A.F.J.2    Grupp, H.3    Schmoch, U.4
  • 52
    • 0001044726 scopus 로고    scopus 로고
    • The social shaping of the national science base
    • Pavit K (1998) The social shaping of the national science base. Research Policy 27: 793-805
    • (1998) Research Policy , vol.27 , pp. 793-805
    • Pavit, K.1
  • 53
    • 0000808494 scopus 로고    scopus 로고
    • The economic benefits of publicly funded basic research: A critical review
    • Salter AJ, Martin BR (2001) The economic benefits of publicly funded basic research: A critical review. Research Policy 30: 209-532
    • (2001) Research Policy , vol.30 , pp. 209-532
    • Salter, A.J.1    Martin, B.R.2
  • 54
    • 31244433491 scopus 로고    scopus 로고
    • Knowledge interactions between universities and industry in Austria: Sectoral patterns and determinants
    • Schartinger D, Rammer C, Fischer MM, Fröhlich J (2002) Knowledge interactions between universities and industry in Austria: Sectoral patterns and determinants. Research Policy 31: 303-328
    • (2002) Research Policy , vol.31 , pp. 303-328
    • Schartinger, D.1    Rammer, C.2    Fischer, M.M.3    Fröhlich, J.4
  • 55
    • 0012191202 scopus 로고
    • Tracing the knowledge transfer from science to technology as reflected in patent indicators
    • Schmoch U (1993) Tracing the knowledge transfer from science to technology as reflected in patent indicators. Scientometrics 26: 193-211
    • (1993) Scientometrics , vol.26 , pp. 193-211
    • Schmoch, U.1
  • 56
    • 0038722827 scopus 로고    scopus 로고
    • Global and domestic utilization of industrial relevant science: Patent citation analysis of science-technology interactions and knowledge flows
    • Tijssen RJW (2001) Global and domestic utilization of industrial relevant science: Patent citation analysis of science-technology interactions and knowledge flows. Research Policy 30: 35-54
    • (2001) Research Policy , vol.30 , pp. 35-54
    • Tijssen, R.J.W.1
  • 57
    • 31244437562 scopus 로고    scopus 로고
    • Science dependence of technologies: Evidence from inventions and their inventors
    • Tijssen RJW (2002) Science dependence of technologies: Evidence from inventions and their inventors. Research Policy 31: 509-526
    • (2002) Research Policy , vol.31 , pp. 509-526
    • Tijssen, R.J.W.1
  • 58
    • 0001286457 scopus 로고    scopus 로고
    • Technological relevance of science: An assessment of citation linkages between patents and research papers
    • Tijssen RJW, Buter RK, Van Leeuwen TN (2000) Technological relevance of science: An assessment of citation linkages between patents and research papers. Scientometrics 47: 389-412
    • (2000) Scientometrics , vol.47 , pp. 389-412
    • Tijssen, R.J.W.1    Buter, R.K.2    Van Leeuwen, T.N.3
  • 60
    • 0003560348 scopus 로고    scopus 로고
    • University research and regional innovation: A spatial econometric analysis of academic technology transfers
    • Kluwer Academic Publishers, Dordrecht
    • Varga A (1998) University research and regional innovation: A spatial econometric analysis of academic technology transfers. Kluwer Academic Publishers, Dordrecht
    • (1998)
    • Varga, A.1
  • 61
    • 0038895536 scopus 로고    scopus 로고
    • Linking science to technology: Using bibliographic reference in patents to build linkage schemes
    • Verbeek A, Debackere K, Luwel M, Andres P, Zimmermann E, Deleus F (2002) Linking science to technology: Using bibliographic reference in patents to build linkage schemes. Scientometrics 54: 339-420
    • (2002) Scientometrics , vol.54 , pp. 339-420
    • Verbeek, A.1    Debackere, K.2    Luwel, M.3    Andres, P.4    Zimmermann, E.5    Deleus, F.6
  • 62
    • 0008696068 scopus 로고    scopus 로고
    • The spatial dimension of knowledge spillovers in Europe: Evidence from firm patenting data
    • AEA Conference, Alicante, Spain
    • Verspagen B, Schoenmakers W (2000) The spatial dimension of knowledge spillovers in Europe: Evidence from firm patenting data. AEA Conference, Alicante, Spain
    • (2000)
    • Verspagen, B.1    Schoenmakers, W.2
  • 63
    • 0000646447 scopus 로고
    • Likelihood ratio tests for model selection and non-nested hypotheses
    • Vuong Q (1989) Likelihood ratio tests for model selection and non-nested hypotheses. Econometrica 57: 307-334
    • (1989) Econometrica , vol.57 , pp. 307-334
    • Vuong, Q.1
  • 64
    • 0002644952 scopus 로고
    • Maximun likelihood estimation of misspecified models
    • White H (1982) Maximun likelihood estimation of misspecified models. Econometrica 50: 1-25
    • (1982) Econometrica , vol.50 , pp. 1-25
    • White, H.1
  • 65
    • 0346904318 scopus 로고    scopus 로고
    • University science, venture capital, and the performance of U. S. biotechnology firms
    • Mimeo, University of California, Los Angeles
    • Zucker L, Darby M, Armstrong J (2000) University science, venture capital, and the performance of U. S. biotechnology firms. Mimeo, University of California, Los Angeles
    • (2000)
    • Zucker, L.1    Darby, M.2    Armstrong, J.3


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.