Journal of Digital Economy最新文献

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Sociomateriality as a theoretical lens for understanding digital platforms: Integration of architectural and managerial perspectives 将社会物质性作为理解数字平台的理论视角:整合建筑和管理视角。
Journal of Digital Economy Pub Date : 2023-12-01 DOI: 10.1016/j.jdec.2024.05.002
Kunal Sevak , Babu George
{"title":"Sociomateriality as a theoretical lens for understanding digital platforms: Integration of architectural and managerial perspectives","authors":"Kunal Sevak ,&nbsp;Babu George","doi":"10.1016/j.jdec.2024.05.002","DOIUrl":"10.1016/j.jdec.2024.05.002","url":null,"abstract":"<div><p>Digital platforms research is divided into two streams namely, the <em>architectural/information technology</em> stream, and the <em>management/economics</em> stream. Despite several calls to merge them, research efforts remain limited. Examining digital platforms' <em>architecture</em> can provide valuable insights into the management of platform organizations, but management scholars have been inattentive to the \"digitality\" inherent in platforms, resulting in a research gap. This conceptual work addresses that gap by showing how three types of digital architectures (viz. Ancillary, Additive, and Autonomous) influence four types of value-offerings of a platform (viz. Applications, Physical products, Services, and Content) and their implications for the engagement of users and complementors in the platform's business model. Using <em>sociomateriality</em> theory, it shows how the sociomaterial properties of digital architectures (represented by their “openness” and “generativity”) result in three distinct architectural roles that have significant implications for a platform's management of four different value-offerings. In doing so, it uncovers a significant relationship between digital architectures (i.e., I.T.) and business models (i.e., Management), thereby identifying the connection between the two diverse platform research streams and introducing a framework for management scholars to examine the “digitality” of platforms. More importantly, it reveals the critical role of a platform's digital architecture in determining the products/services, business models and governance mechanisms for a platform business, and develops several propositions for future research.</p></div>","PeriodicalId":100773,"journal":{"name":"Journal of Digital Economy","volume":"2 ","pages":"Pages 317-329"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773067024000098/pdfft?md5=e4442e87bba7db2816b4bfa2f600a2be&pid=1-s2.0-S2773067024000098-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141039838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Situating artificial intelligence in organization: A human-machine relationship perspective 人工智能在组织中的定位:人机关系视角?对 Kemp(2023 年)的论文 "通过人工智能实现竞争优势:人工智能在组织中的定位:人机关系视角?
Journal of Digital Economy Pub Date : 2023-12-01 DOI: 10.1016/j.jdec.2024.01.001
Xin Li , Ke Rong , Xinwei Shi
{"title":"Situating artificial intelligence in organization: A human-machine relationship perspective","authors":"Xin Li ,&nbsp;Ke Rong ,&nbsp;Xinwei Shi","doi":"10.1016/j.jdec.2024.01.001","DOIUrl":"10.1016/j.jdec.2024.01.001","url":null,"abstract":"<div><p>The increasing advancements in artificial intelligence (AI) technology have resulted in greater adoption of intelligent devices, such as industrial and service robots. Such context substantially influences the routine processes of operations, thereby promoting the ongoing evolutionary development of human-machine interaction. Here, we analyze an interesting article published in the Academy of Management Review (AMR) by Ayenda Kemp, who proposes the concept of situated AI for discussing AI-driven competitive advantages. In our alternative framework of situating AI in the organization, we identify three aspects of the human-machine relationship—cohesion, autonomy, and equality—and associate them with three redefined situating activities—anchoring, bounding, and calibrating, to bring the full potential of AI to an organization. We believe this defined framework can further contribute to relevant literature in the field of digital economy.</p></div>","PeriodicalId":100773,"journal":{"name":"Journal of Digital Economy","volume":"2 ","pages":"Pages 330-335"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773067024000013/pdfft?md5=e71a7366c0c4b471d5ea6904d046724a&pid=1-s2.0-S2773067024000013-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139454919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Building supply chain resilience through collaborative innovation: An information processing theory perspective 通过协作创新建立供应链复原力:信息处理理论视角
Journal of Digital Economy Pub Date : 2023-12-01 DOI: 10.1016/j.jdec.2024.01.004
Fangxu Yan , Lujie Chen , Fu Jia , Yu Liu
{"title":"Building supply chain resilience through collaborative innovation: An information processing theory perspective","authors":"Fangxu Yan ,&nbsp;Lujie Chen ,&nbsp;Fu Jia ,&nbsp;Yu Liu","doi":"10.1016/j.jdec.2024.01.004","DOIUrl":"10.1016/j.jdec.2024.01.004","url":null,"abstract":"<div><p>COVID-19 has brought unprecedented impacts on global logistics and left supply chain management on the verge of collapse, which highlights the research importance of supply chain resilience (SCRE). To provide more insights into SCRE in the pandemic context, this paper uses information processing theory (IPT) as a theoretical lens and attempt to explore how SCRE can be achieved through information processing ‘fit’, that is, the fit between information processing capability and its information processing capability. We conducted a single-case analysis by choosing Zong-Teng Group, one of the biggest cross-border e-commerce enterprises in China, as our sample. Data were mainly collected from interviews with Zong-Teng’s managers and open online resources. Through this single-case analysis, this paper identifies supply chain collaborative innovation as a new mechanism between information processing ‘fit’ and SCRE. Specifically, a firm’s information processing ‘fit’ can lead to three modes of innovative collaborations (i.e., technology, management and market innovation), which further improves SCRE. These findings provide some valuable implications for both researchers and practitioners in operations and supply chain management (OSCM) realms.</p></div>","PeriodicalId":100773,"journal":{"name":"Journal of Digital Economy","volume":"2 ","pages":"Pages 233-243"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773067024000049/pdfft?md5=ecc350c8cfe48409c0dfcdb371f2b79f&pid=1-s2.0-S2773067024000049-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139872031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exploring the current status and future opportunities of blockchain technology adoption and application in supply chain management 探索供应链管理中采用和应用区块链技术的现状和未来机遇
Journal of Digital Economy Pub Date : 2023-12-01 DOI: 10.1016/j.jdec.2024.01.005
Keru Duan , Gu Pang , Yong Lin
{"title":"Exploring the current status and future opportunities of blockchain technology adoption and application in supply chain management","authors":"Keru Duan ,&nbsp;Gu Pang ,&nbsp;Yong Lin","doi":"10.1016/j.jdec.2024.01.005","DOIUrl":"https://doi.org/10.1016/j.jdec.2024.01.005","url":null,"abstract":"<div><p>This study comprises a systematic literature review that offers a thorough analysis of the present state-of-the-art knowledge regarding the adoption and application of blockchain technology within the context of supply chain management. Based on an extensive review of 133 articles from highly-regarded journals, we developed a framework where we highlight the integration of the transition from blockchain technology adoption to its application. This transition process is explained by two theories: the Technology Acceptance Model and the Diffusion of Innovation Theory. In the adoption phase, we identified eight internal drivers and seven external drivers, together with comprehensive barriers. Our framework also integrates and examines the blockchain technology application stage, focusing not only on the current development of benefits of blockchain technology implementation but also on the challenges that impede the successful implementation of blockchain technology in supply chain management. The future development prospects are also highlighted which include standardization, platform development, regulation system development, cost reduction, and talent cultivation. These future developments were critical yet were missing in the current academic literature. By providing an in-depth analysis of these challenges, our study can assist supply chain practitioners in making informed decisions about blockchain-enabled supply chain management initiatives.</p></div>","PeriodicalId":100773,"journal":{"name":"Journal of Digital Economy","volume":"2 ","pages":"Pages 244-288"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773067024000050/pdfft?md5=a6c1c2bb4a69301679f0762c90a988a0&pid=1-s2.0-S2773067024000050-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140187580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The future of the food supply chain: A systematic literature review and research directions towards sustainability, resilience, and technology adoption 食品供应链的未来:系统性文献综述以及可持续性、复原力和技术采用的研究方向
Journal of Digital Economy Pub Date : 2023-12-01 DOI: 10.1016/j.jdec.2024.03.001
I-Hsuan Su, Lin Wu, Kim Hua Tan
{"title":"The future of the food supply chain: A systematic literature review and research directions towards sustainability, resilience, and technology adoption","authors":"I-Hsuan Su,&nbsp;Lin Wu,&nbsp;Kim Hua Tan","doi":"10.1016/j.jdec.2024.03.001","DOIUrl":"10.1016/j.jdec.2024.03.001","url":null,"abstract":"<div><p>In recent years, our food supply chain facing various disruptions shows a need for higher resilience and sustainability. To better prepare for future uncertainties the food supply chain may encounter, it is imperative to understand the status quo of the food supply chain resilience literature, which focuses on deploying digital technology and integrating sustainability in supply chain management. Motivated by this, our study critically reviews the literature on food supply chain resilience against different types of disruptions, identifies research gaps, and provides a reference for the food supply chain to respond to uncertainties more effectively through digital technology and sustainability integration. To fulfil this objective, we perform a systematic literature review of academic journal articles from 2010 to 2020. Our study is novel in investigating different potential strategies to respond to various disruptions, emphasising the role of digital technologies and sustainability. The findings complement existing literature on supply chain resilience and serve as guides to supply chain practitioners facing disruptions. In addition, we investigate possible ways of adopting and optimising digital technologies to enhance food supply chain resilience and indicate areas where a sustainable future can be achieved through a more resilient food supply chain powered by digital innovations.</p></div>","PeriodicalId":100773,"journal":{"name":"Journal of Digital Economy","volume":"2 ","pages":"Pages 303-316"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773067024000074/pdfft?md5=2d41d082ea1382d88a202f077ab9662d&pid=1-s2.0-S2773067024000074-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140273094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
How SMEs respond to an exogenous shock: Diversification, servitization and digitalization 中小企业如何应对外来冲击:多样化、服务化和数字化
Journal of Digital Economy Pub Date : 2023-12-01 DOI: 10.1016/j.jdec.2024.01.006
Marco Bettiol , Mauro Capestro , Eleonora Di Maria , Stefano Micelli
{"title":"How SMEs respond to an exogenous shock: Diversification, servitization and digitalization","authors":"Marco Bettiol ,&nbsp;Mauro Capestro ,&nbsp;Eleonora Di Maria ,&nbsp;Stefano Micelli","doi":"10.1016/j.jdec.2024.01.006","DOIUrl":"10.1016/j.jdec.2024.01.006","url":null,"abstract":"<div><p>COVID-19 has been an exogenous shock for several businesses. Pandemic pushed firms to operate in an uncharted territory. Firms had to adapt quickly to survive in an unpredictable market and in conditions of uncertainty further fueled by political instability and environmental challenges. Based on a quantitative survey carried out during the pandemic period, the study aims at assessing how small and medium-sized enterprises (SMEs) responded to the challenges emerged during the COVID-19 outbreak, focusing on diversification and servitization strategies to outline potential new theoretical insights related to these strategies developed in turbulent times considering the function of digitalization in this respect. Through a cluster analysis the study identifies 4 groups of firms (unresponsive, defender, analyzer and prospector) that have shown different responses to the crisis related to diversification and servitization, highlighting the key role of digital technologies (both ICT and Industry 4.0) as well as of customers. The findings allowed to define theoretical and practical implications.</p></div>","PeriodicalId":100773,"journal":{"name":"Journal of Digital Economy","volume":"2 ","pages":"Pages 221-232"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773067024000062/pdfft?md5=669144c567f75b61a7c91ab349a50d29&pid=1-s2.0-S2773067024000062-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139872421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Digital transformation, intelligent device utilization, and carbon emission reduction 数字化转型、智能设备利用和碳减排
Journal of Digital Economy Pub Date : 2023-12-01 DOI: 10.1016/j.jdec.2023.12.004
Yuzhou Chu, Mingwang Cheng, Xiyao Zhao, Di Zhou
{"title":"Digital transformation, intelligent device utilization, and carbon emission reduction","authors":"Yuzhou Chu,&nbsp;Mingwang Cheng,&nbsp;Xiyao Zhao,&nbsp;Di Zhou","doi":"10.1016/j.jdec.2023.12.004","DOIUrl":"10.1016/j.jdec.2023.12.004","url":null,"abstract":"<div><p>In the context of China's rapidly growing digital economy, exploring the potential to reduce carbon emissions from the perspective of enterprise digitization is of vital practical significance for achieving ambitious \"carbon peak\" and \"carbon neutrality\" goals. This paper uses data from A-share listed companies as a sample pool spanning the years 2014–2020 and finds that a nonlinear, inverted U-shaped relationship exists between enterprise digital transformation and carbon emissions. We further construct several robustness tests and show that the effect remains significant after accounting for the endogeneity issue using IV regressions. Heterogeneity analysis indicates that the effect of digital transformation on carbon emissions is influenced by the regional economic development level and the ownership structure of enterprises. Notably, in non-state-owned enterprises and economically advanced regions, the influence of digital transformation on carbon emissions becomes more pronounced. This paper provides explicit policy implications. It is suggested that enterprises accelerate their digital transformation by integrating smart device development into their production and operations and government should give support to digital transformation to facilitate industrial upgrading, and further promote China's pursuit of high-quality and sustainable economic development.</p></div>","PeriodicalId":100773,"journal":{"name":"Journal of Digital Economy","volume":"2 ","pages":"Pages 175-189"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773067023000274/pdfft?md5=4784b5e408a1266b0ea79d62fdc53173&pid=1-s2.0-S2773067023000274-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139453602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of smart scenic spot construction in China 中国智慧景区建设评估
Journal of Digital Economy Pub Date : 2023-12-01 DOI: 10.1016/j.jdec.2023.12.002
Qian Wu, Zizhao Wu, Ning Deng
{"title":"Evaluation of smart scenic spot construction in China","authors":"Qian Wu,&nbsp;Zizhao Wu,&nbsp;Ning Deng","doi":"10.1016/j.jdec.2023.12.002","DOIUrl":"https://doi.org/10.1016/j.jdec.2023.12.002","url":null,"abstract":"<div><p>The arrival of “Internet Plus” and the 5G era has brought rapid digital transformation. Many scenic spots in China are conforming to trends of the times by embarking on this transformation and beginning to become smart scenic spots. Yet these sites continue to face challenges in the process of smart construction. Moreover, theoretical guidance on the smart construction of scenic spots is lacking. We adopted a questionnaire survey method to study smart construction at 5A and 4A scenic spots in China. Based on the results, we established a smart scenic spot evaluation system via the Delphi method and the analytic hierarchy process. Our proposed system included infrastructure construction, smart service, smart management, and smart marketing as primary indicators. With the help of a geographic information system, we also discovered that scenic spots' locations influence smart construction. Findings can inform countermeasures and evaluation standards for China's smart scenic spot construction, offering guidance for improving sites' smartness.</p></div>","PeriodicalId":100773,"journal":{"name":"Journal of Digital Economy","volume":"2 ","pages":"Pages 137-161"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773067023000250/pdfft?md5=e4289ca212c187868d10149426b626d7&pid=1-s2.0-S2773067023000250-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139090196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Digital global value chains: An analysis from the perspective of a value-added decomposition 数字全球价值链:从增值分解的角度进行分析
Journal of Digital Economy Pub Date : 2023-12-01 DOI: 10.1016/j.jdec.2023.12.003
Yuning Gao , Meng Li , Anqi Yu , Hongyun Pan
{"title":"Digital global value chains: An analysis from the perspective of a value-added decomposition","authors":"Yuning Gao ,&nbsp;Meng Li ,&nbsp;Anqi Yu ,&nbsp;Hongyun Pan","doi":"10.1016/j.jdec.2023.12.003","DOIUrl":"10.1016/j.jdec.2023.12.003","url":null,"abstract":"<div><p>Digital technologies reshape the distribution of value added through global value chains (GVCs). Based on the GVC decomposition method, we calculate the digital technology-related value added implied in GVCs. We find that digital technology-related value added share in service industries is higher and growing more rapidly than overall industries. The share of digital technology-related value added of three trade paths in service industries is higher than its share in overall industries. In service industries, simple and complex value chains have a higher share of digital technology-related value added than traditional value chains. Digital technology-related value added in China's service industries grows faster than overall industries, and digital technology-related value added in China's service industries trade grows faster than in overall industries trade. The share of digital technology-related value added in trade is higher and grows faster than its in domestic demand. The share of digital technology-related value added in China's service industries is higher than that in overall industries. This paper offers new interpretations of digital GVCs.</p></div>","PeriodicalId":100773,"journal":{"name":"Journal of Digital Economy","volume":"2 ","pages":"Pages 162-174"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773067023000262/pdfft?md5=c65c7021148f883ee69c84f992a9eb5d&pid=1-s2.0-S2773067023000262-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139130007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sponsorship disclosure and consumer engagement: Evidence from Bilibili video platform 赞助披露与消费者参与:来自哔哩哔哩视频平台的证据
Journal of Digital Economy Pub Date : 2023-08-01 DOI: 10.1016/j.jdec.2023.07.001
Chengbin Sun , Di Zhou , Tianxi Yang
{"title":"Sponsorship disclosure and consumer engagement: Evidence from Bilibili video platform","authors":"Chengbin Sun ,&nbsp;Di Zhou ,&nbsp;Tianxi Yang","doi":"10.1016/j.jdec.2023.07.001","DOIUrl":"https://doi.org/10.1016/j.jdec.2023.07.001","url":null,"abstract":"<div><p>With the rapid advancement of mobile internet, UGC video platforms have become integral to the daily lives of young generations. For content creators on these platforms, sharing videos sponsored by corporations is the primary method to monetize their work. This research delves into the impact of video content sponsorship and sponsorship disclosure on consumer engagement by analyzing nearly 30,000 videos on the Bilibili platform. The results indicate that video sponsorships have a significantly negative impact on consumer engagement. However, comprehensive disclosure of sponsorship beforehand can improve consumer engagement. Additionally, our study demonstrates that followers of top-tier content creators are more sensitive to video sponsorships. This paper presents a critical empirical investigation of the sponsorship issue within the context of UGC platforms, making valuable contributions to the theories of advertisements' externalities in two-sided markets and information asymmetry.</p></div>","PeriodicalId":100773,"journal":{"name":"Journal of Digital Economy","volume":"2 ","pages":"Pages 81-96"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49879943","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}
引用次数: 0
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