Pub Date : 2020-07-22DOI: 10.20396/rbi.v19i0.8655780
Julia Paranhos, Eduardo Mercadante, L. Hasenclever
This article compares the innovative efforts of large national (GEFNs) and transnational (GEFTs) pharmaceutical companies operating in Brazil. The descriptive methodology uses unpublished data from the last three editions of the Innovation Survey (Pintec) - 2008, 2011 and 2014 - and a literature review of the pharmaceutical industry and its innovation strategies to explain the innovative efforts described by the data. The results show the positive evolution of GEFNs in terms of the effort to build innovative capacity, and of GEFTs to maintain the standards of low innovative efforts in Brazil. It is concluded that GEFNs are changing their pattern of investments in innovative activities. Such results corroborate empirical studies, which showed the advance in the complexity of innovative capabilities of these companies, and pointed out other strategies used, such as partnership with knowledge centers and internationalization of R&D.
{"title":"Os esforços inovativos das grandes empresas farmacêuticas no Brasil","authors":"Julia Paranhos, Eduardo Mercadante, L. Hasenclever","doi":"10.20396/rbi.v19i0.8655780","DOIUrl":"https://doi.org/10.20396/rbi.v19i0.8655780","url":null,"abstract":"This article compares the innovative efforts of large national (GEFNs) and transnational (GEFTs) pharmaceutical companies operating in Brazil. The descriptive methodology uses unpublished data from the last three editions of the Innovation Survey (Pintec) - 2008, 2011 and 2014 - and a literature review of the pharmaceutical industry and its innovation strategies to explain the innovative efforts described by the data. The results show the positive evolution of GEFNs in terms of the effort to build innovative capacity, and of GEFTs to maintain the standards of low innovative efforts in Brazil. It is concluded that GEFNs are changing their pattern of investments in innovative activities. Such results corroborate empirical studies, which showed the advance in the complexity of innovative capabilities of these companies, and pointed out other strategies used, such as partnership with knowledge centers and internationalization of R&D.","PeriodicalId":41641,"journal":{"name":"Revista Brasileira de Inovacao","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68365164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-12DOI: 10.20396/rbi.v19i0.8655394
Leonardo Francisco Favaretto, E. Catela
The present work displays a computational agent-based model that aims to comprehend the migratory behaviors of the creative class and its relationship with the urban agglomeration patterns and the creative potential. In the model formulation, we used concepts from evolutionary economic geography, network theory and creative economy literature. The model simulates the learning, interaction and migration of the agents, taking ethnic, political and sexual diversity into consideration, as well as urban amenities and job opportunities as attractive factors to the creative class. As a result, we observe an exponential relationship between the creative potential and a locations’ population, suggesting that big urban centers do have a relative and absolute edge in terms of potential to innovate. Among the variables that interfere in the growth speed of the creative potential, the amount of exchanged knowledge between agents seems to have a bigger effect than the number of interactions between agents.
{"title":"Potencial criativo e padrões de migração","authors":"Leonardo Francisco Favaretto, E. Catela","doi":"10.20396/rbi.v19i0.8655394","DOIUrl":"https://doi.org/10.20396/rbi.v19i0.8655394","url":null,"abstract":"The present work displays a computational agent-based model that aims to comprehend the migratory behaviors of the creative class and its relationship with the urban agglomeration patterns and the creative potential. In the model formulation, we used concepts from evolutionary economic geography, network theory and creative economy literature. The model simulates the learning, interaction and migration of the agents, taking ethnic, political and sexual diversity into consideration, as well as urban amenities and job opportunities as attractive factors to the creative class. As a result, we observe an exponential relationship between the creative potential and a locations’ population, suggesting that big urban centers do have a relative and absolute edge in terms of potential to innovate. Among the variables that interfere in the growth speed of the creative potential, the amount of exchanged knowledge between agents seems to have a bigger effect than the number of interactions between agents.","PeriodicalId":41641,"journal":{"name":"Revista Brasileira de Inovacao","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68365421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-06DOI: 10.20396/rbi.v19i0.8657550
M. Dias, Matias Ramirez
This article analyses the impact of external factors on niche evolution and, in particular, the change from a technical niche into a socio-technical niche. When we review the literature on niche evolution, we find that discussions on the impact of external factors on niche evolution are not clear, particularly, on new financial sponsors’ expectations. Therefore, this paper attempts to answer the following research question: Do changes in public financial resources contribute to transforming a technical niche into a socio-technical niche? We analysed an agricultural innovation niche case based on Butia Native Fruits (e.g. Butia odorata and others species), developed mainly by Temperate Climate Brazilian Agricultural Research Corporation (EMBRAPA) to understand whether and how external factors might contribute to an evolution of a niche. We found that new financial sponsors’ expectations can cause an important change in the evolution of a niche. Before the existence of a new external finance sponsor, the technical network niche was composed of research organisations and researchers working on isolated projects. However, after a new external finance sponsor was found, the network or organisations moved into experimental activities, upscaling, and outscaling, and began to incorporate multilevel organisations and people. Consequently, a more complex, coordinated organisation was created that incorporated social co-production, democracy, and participation, and the niche progressed towards a socio-technical niche.
{"title":"Niche evolution, external circumstances, and network transformation","authors":"M. Dias, Matias Ramirez","doi":"10.20396/rbi.v19i0.8657550","DOIUrl":"https://doi.org/10.20396/rbi.v19i0.8657550","url":null,"abstract":"This article analyses the impact of external factors on niche evolution and, in particular, the change from a technical niche into a socio-technical niche. When we review the literature on niche evolution, we find that discussions on the impact of external factors on niche evolution are not clear, particularly, on new financial sponsors’ expectations. Therefore, this paper attempts to answer the following research question: Do changes in public financial resources contribute to transforming a technical niche into a socio-technical niche? We analysed an agricultural innovation niche case based on Butia Native Fruits (e.g. Butia odorata and others species), developed mainly by Temperate Climate Brazilian Agricultural Research Corporation (EMBRAPA) to understand whether and how external factors might contribute to an evolution of a niche. We found that new financial sponsors’ expectations can cause an important change in the evolution of a niche. Before the existence of a new external finance sponsor, the technical network niche was composed of research organisations and researchers working on isolated projects. However, after a new external finance sponsor was found, the network or organisations moved into experimental activities, upscaling, and outscaling, and began to incorporate multilevel organisations and people. Consequently, a more complex, coordinated organisation was created that incorporated social co-production, democracy, and participation, and the niche progressed towards a socio-technical niche.","PeriodicalId":41641,"journal":{"name":"Revista Brasileira de Inovacao","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68365625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-06DOI: 10.20396/rbi.v19i0.8654621
João P. Romero
The paper presents a critical assessment of the Schumpeterian macroeconomic approach to economic growth. Taking as reference a representative sample of important works within this tradition, the paper identifies the main contributions and limitations of the macroeconomic Schumpeterian literature to understanding economic growth. More specifically, the literature review carried out in this paper focuses on three of Schumpeter’s ideas that have become particularly influential in macroeconomic growth theory: (i) the role of technological transfer in productivity growth in follower countries; (ii) the importance of research intensity for technical progress; and (iii) the prominence of technological competitiveness for trade performance. The contribution of the paper is twofold: (i) it provides an organized review of the macroeconomic literature until its present state; and (ii) it indicates important gaps in this literature that should be the focus of further research.
{"title":"Aggregate growth models from a Schumpeterian perspective","authors":"João P. Romero","doi":"10.20396/rbi.v19i0.8654621","DOIUrl":"https://doi.org/10.20396/rbi.v19i0.8654621","url":null,"abstract":"The paper presents a critical assessment of the Schumpeterian macroeconomic approach to economic growth. Taking as reference a representative sample of important works within this tradition, the paper identifies the main contributions and limitations of the macroeconomic Schumpeterian literature to understanding economic growth. More specifically, the literature review carried out in this paper focuses on three of Schumpeter’s ideas that have become particularly influential in macroeconomic growth theory: (i) the role of technological transfer in productivity growth in follower countries; (ii) the importance of research intensity for technical progress; and (iii) the prominence of technological competitiveness for trade performance. The contribution of the paper is twofold: (i) it provides an organized review of the macroeconomic literature until its present state; and (ii) it indicates important gaps in this literature that should be the focus of further research.","PeriodicalId":41641,"journal":{"name":"Revista Brasileira de Inovacao","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68365193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-06-23DOI: 10.20396/rbi.v19i0.8654435
R. Santos
The goal of this work is to make an ex-ante analysis of the Inova Petro Program for the period 2012-2017, and answer the following question: Why the most important policy of inovation for the national chain of oil and natural gas industry supplier shows difficulties on hiring the approved business plans? By performing the study of the program starting with the elements O-M-P (Organization-Methods-Purposes), it is conclused that the fragilities of the Inova Petro Program are related with the low level or coordenation between the organizations that plan and execute the policy and the selection of apropriate methods for the achieve of the planned purposes.
{"title":"Inova Petro","authors":"R. Santos","doi":"10.20396/rbi.v19i0.8654435","DOIUrl":"https://doi.org/10.20396/rbi.v19i0.8654435","url":null,"abstract":"The goal of this work is to make an ex-ante analysis of the Inova Petro Program for the period 2012-2017, and answer the following question: Why the most important policy of inovation for the national chain of oil and natural gas industry supplier shows difficulties on hiring the approved business plans? By performing the study of the program starting with the elements O-M-P (Organization-Methods-Purposes), it is conclused that the fragilities of the Inova Petro Program are related with the low level or coordenation between the organizations that plan and execute the policy and the selection of apropriate methods for the achieve of the planned purposes.","PeriodicalId":41641,"journal":{"name":"Revista Brasileira de Inovacao","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68365488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-29DOI: 10.20396/rbi.v19i0.8655699
P. Lavarello, S. Sztulwark, Matías Mancini, Santiago Eduardo Juncal
En este articulo se analiza la experiencia de ascenso industrial de Corea del Sur y la India en la industria biofarmaceutica mundial. A partir de un abordaje historico comparativo, se analiza como durante los ultimos anos y ante el escenario de expiracion de las patentes de los productos farmaceuticos de mayor complejidad, estos dos paises lograron avanzar en procesos de industrializacion “muy tardios” a partir del desarrollo de una estrategia de imitacion creativa. Se indaga, en particular, como estos paises siguieron trayectorias diferenciadas de entrada: por un lado, la de “salto de etapas”, que demando un conjunto de acciones deliberadas orientadas a favorecer a ciertas actividades o sectores de una forma focalizada; por otro, la de tipo secuencial, en la que los cambios institucionales y de politica fueron mas graduales, asegurando un conjunto de condiciones generales de infraestructura tecnologica y propiedad intelectual.
{"title":"Imitación creativa frente a las oportunidades de la farmabiotecnología","authors":"P. Lavarello, S. Sztulwark, Matías Mancini, Santiago Eduardo Juncal","doi":"10.20396/rbi.v19i0.8655699","DOIUrl":"https://doi.org/10.20396/rbi.v19i0.8655699","url":null,"abstract":"En este articulo se analiza la experiencia de ascenso industrial de Corea del Sur y la India en la industria biofarmaceutica mundial. A partir de un abordaje historico comparativo, se analiza como durante los ultimos anos y ante el escenario de expiracion de las patentes de los productos farmaceuticos de mayor complejidad, estos dos paises lograron avanzar en procesos de industrializacion “muy tardios” a partir del desarrollo de una estrategia de imitacion creativa. Se indaga, en particular, como estos paises siguieron trayectorias diferenciadas de entrada: por un lado, la de “salto de etapas”, que demando un conjunto de acciones deliberadas orientadas a favorecer a ciertas actividades o sectores de una forma focalizada; por otro, la de tipo secuencial, en la que los cambios institucionales y de politica fueron mas graduales, asegurando un conjunto de condiciones generales de infraestructura tecnologica y propiedad intelectual.","PeriodicalId":41641,"journal":{"name":"Revista Brasileira de Inovacao","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68365542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-29DOI: 10.20396/rbi.v19i0.8656668
Diana Suárez, Florencia Fiorentin, Analía Erbes
This article analyses the impact of investments in research and development (RD ii) only in the latter investments in QHR impact growth; iii) none of the investments impacts on growth among low-income countries; iv) among high-income countries, advanced infrastructure is the most important explanatory factor of the environment; basic infrastructure and equity are also significant among middle-income countries, and only basic infrastructure is significant in low-income ones.
{"title":"Dime cómo creces y te diré cómo inviertes. El impacto de la I+D, los recursos humanos y los sistemas de innovación en el crecimiento económico:","authors":"Diana Suárez, Florencia Fiorentin, Analía Erbes","doi":"10.20396/rbi.v19i0.8656668","DOIUrl":"https://doi.org/10.20396/rbi.v19i0.8656668","url":null,"abstract":"This article analyses the impact of investments in research and development (RD ii) only in the latter investments in QHR impact growth; iii) none of the investments impacts on growth among low-income countries; iv) among high-income countries, advanced infrastructure is the most important explanatory factor of the environment; basic infrastructure and equity are also significant among middle-income countries, and only basic infrastructure is significant in low-income ones.","PeriodicalId":41641,"journal":{"name":"Revista Brasileira de Inovacao","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68366076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-15DOI: 10.20396/rbi.v19i0.8657579
Rodrigo Volmir Anderle
This is the review of the book “Modern Evolutionary Economics”, published in 2018 by the authors Richard R. Nelson, Giovanni Dosi, Constance E. Helfat, Andreas Pyk, Pier Paolo Saviott, Keun Lee, Kurt Dopfer, Franco Malerba and Sidney G. Winter. Aiming to contribute to the research in evolutionary economics, the review was written by the author Rodrigo Volmir Anderle, doctoral student in Applied Economics at Universidade Federal da Bahia.
{"title":"Modern evolutionary economics","authors":"Rodrigo Volmir Anderle","doi":"10.20396/rbi.v19i0.8657579","DOIUrl":"https://doi.org/10.20396/rbi.v19i0.8657579","url":null,"abstract":"This is the review of the book “Modern Evolutionary Economics”, published in 2018 by the authors Richard R. Nelson, Giovanni Dosi, Constance E. Helfat, Andreas Pyk, Pier Paolo Saviott, Keun Lee, Kurt Dopfer, Franco Malerba and Sidney G. Winter. Aiming to contribute to the research in evolutionary economics, the review was written by the author Rodrigo Volmir Anderle, doctoral student in Applied Economics at Universidade Federal da Bahia.","PeriodicalId":41641,"journal":{"name":"Revista Brasileira de Inovacao","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68365632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-04DOI: 10.20396/rbi.v19i0.8653578
R. Arechavala-Vargas, Alexandra Donado-Mercado, Viridiana Núñez-López, María Fernanda Andrés
Technology-based entrepreneurs in Latin America face different institutional environments and have less access to knowledge and resources than those in industrialized economies. Opportunity discovery and construction therefore follow also different paths. Results from a set of parallel case studies in Argentina, Colombia and Mexico, explore some differences in terms of the role of available technological and market knowledge, and in terms of the entrepreneur’s background. But also, strong similarities among these countries’ economic development, their R&D infrastructure, and their institutional environments, shape similar patterns in their entrepreneurs’ endeavours. These patterns have important public policy implications for promoting innovation in transitional economies.
{"title":"Technology-based entrepreneurial opportunity discovery and development","authors":"R. Arechavala-Vargas, Alexandra Donado-Mercado, Viridiana Núñez-López, María Fernanda Andrés","doi":"10.20396/rbi.v19i0.8653578","DOIUrl":"https://doi.org/10.20396/rbi.v19i0.8653578","url":null,"abstract":"Technology-based entrepreneurs in Latin America face different institutional environments and have less access to knowledge and resources than those in industrialized economies. Opportunity discovery and construction therefore follow also different paths. Results from a set of parallel case studies in Argentina, Colombia and Mexico, explore some differences in terms of the role of available technological and market knowledge, and in terms of the entrepreneur’s background. But also, strong similarities among these countries’ economic development, their R&D infrastructure, and their institutional environments, shape similar patterns in their entrepreneurs’ endeavours. These patterns have important public policy implications for promoting innovation in transitional economies.","PeriodicalId":41641,"journal":{"name":"Revista Brasileira de Inovacao","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47420763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-02DOI: 10.20396/rbi.v19i0.8655371
Adilson Giovanini, Pablo Felipe Bittencourt, Mauricio Uriona
As plataformas de aplicativos fazem parte de ecossistemas de inovacao, onde as interacoes entre usuarios finais e desenvolvedores autorregulam o crescimento do proprio ecossistema. Uma das informacoes mais importantes para esse processo sao as avaliacoes dos usuarios. Com o intuito de analisar o impacto dessas informacoes, este artigo utiliza uma regressao por minimos quadrados ordinarios (MQO) para o ano de 2016, com base em 19 variaveis para 60 paises. E mensurado o grau de exigencia do mercado consumidor, utilizando um novo indicador baseado nas avaliacoes dos usuarios finais para verificar a consistencia de relacoes entre qualidade da demanda (mensurada pelo novo indicador) e o desempenho inovador de diferentes paises nesse segmento. Os resultados evidenciam a robustez e as novas possibilidades de pesquisa que surgem, dadas as caracteristicas positivas apresentadas pelo novo indicador construido atraves da utilizacao de ferramentas de big data e data analytics. Esse indicador mostra que a qualidade da demanda apoia inovacoes no segmento produtivo, o que levou a concussao de que obter feedback da demanda mais sofisticada representa um estimulo potencial poderoso ao avanco no desenvolvimento de aplicativos.
{"title":"Ecossistema de inovação em plataformas de aplicativos","authors":"Adilson Giovanini, Pablo Felipe Bittencourt, Mauricio Uriona","doi":"10.20396/rbi.v19i0.8655371","DOIUrl":"https://doi.org/10.20396/rbi.v19i0.8655371","url":null,"abstract":"As plataformas de aplicativos fazem parte de ecossistemas de inovacao, onde as interacoes entre usuarios finais e desenvolvedores autorregulam o crescimento do proprio ecossistema. Uma das informacoes mais importantes para esse processo sao as avaliacoes dos usuarios. Com o intuito de analisar o impacto dessas informacoes, este artigo utiliza uma regressao por minimos quadrados ordinarios (MQO) para o ano de 2016, com base em 19 variaveis para 60 paises. E mensurado o grau de exigencia do mercado consumidor, utilizando um novo indicador baseado nas avaliacoes dos usuarios finais para verificar a consistencia de relacoes entre qualidade da demanda (mensurada pelo novo indicador) e o desempenho inovador de diferentes paises nesse segmento. Os resultados evidenciam a robustez e as novas possibilidades de pesquisa que surgem, dadas as caracteristicas positivas apresentadas pelo novo indicador construido atraves da utilizacao de ferramentas de big data e data analytics. Esse indicador mostra que a qualidade da demanda apoia inovacoes no segmento produtivo, o que levou a concussao de que obter feedback da demanda mais sofisticada representa um estimulo potencial poderoso ao avanco no desenvolvimento de aplicativos.","PeriodicalId":41641,"journal":{"name":"Revista Brasileira de Inovacao","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68365346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：