Journal of Engineering and Technology Management最新文献

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Governing digital collaboration: Reducing interpretive uncertainty with system integrators 管理数字协作:减少与系统集成商解释的不确定性
IF 3.9 3区 管理学
Journal of Engineering and Technology Management Pub Date : 2026-04-01 Epub Date: 2026-05-28 DOI: 10.1016/j.jengtecman.2026.101969
Claudia Franzè , Emilio Paolucci , Danilo Pesce
{"title":"Governing digital collaboration: Reducing interpretive uncertainty with system integrators","authors":"Claudia Franzè ,&nbsp;Emilio Paolucci ,&nbsp;Danilo Pesce","doi":"10.1016/j.jengtecman.2026.101969","DOIUrl":"10.1016/j.jengtecman.2026.101969","url":null,"abstract":"<div><div>As manufacturing firms adopt digital technologies to improve efficiency, they increasingly collaborate with system integrators to compensate for internal capability gaps. Such collaborations, however, are prone to interpretive uncertainty—cognitive misalignments about goals, processes, and technologies—that complicate coordination and value creation. This study examines how governance mechanisms shape the performance implications of these collaborations by analyzing survey data from 101 Italian automotive manufacturers. Focusing on two relational governance practices—co-creation and continuous collaboration—and two types of digital technologies—network and physical–digital interface technologies—we find that governance effectiveness is strongly contingent on technological characteristics. Co-creation is associated with lower cost efficiency when applied to more standardized physical–digital interface technologies, whereas relational governance is associated with higher cost efficiency in more systemically integrative digital initiatives involving network technologies. These findings advance research on inter-organizational governance and digital transformation by demonstrating how governance–technology alignment shapes operational outcomes and by highlighting the underexplored role of system integrators in manufacturing digitalization. The study also offers managers and policymakers guidance on tailoring governance to technological and relational contexts to support effective digital adoption.</div></div>","PeriodicalId":50209,"journal":{"name":"Journal of Engineering and Technology Management","volume":"80 ","pages":"Article 101969"},"PeriodicalIF":3.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148183886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Digital technologies, servitization and business models: An integrated literature review 数字技术、服务化与商业模式:综合文献综述
IF 3.9 3区 管理学
Journal of Engineering and Technology Management Pub Date : 2026-04-01 Epub Date: 2026-05-29 DOI: 10.1016/j.jengtecman.2026.101971
Lara Agostini, Clara Filosa, Anna Nosella
{"title":"Digital technologies, servitization and business models: An integrated literature review","authors":"Lara Agostini,&nbsp;Clara Filosa,&nbsp;Anna Nosella","doi":"10.1016/j.jengtecman.2026.101971","DOIUrl":"10.1016/j.jengtecman.2026.101971","url":null,"abstract":"<div><div>The integration of digital technologies has significantly influenced the evolution of servitization strategies, leading to the transformation of traditional business models (BMs) into more service-oriented frameworks. Considering the rise of the topic, this study aims to offer a comprehensive and theoretically grounded synthesis of the extant literature on the integration of digital technologies, servitization and BM, by employing a systematic literature review, with the objective of identifying prevailing research trends and gaps that warrant further investigation. To this end, we identified and analysed a sample of 131 articles, ranging from 2005 to 2025. The article presents the content analysis of these articles according to the type of servitized offering, starting from the more general ones, namely general product-service systems (PSSs), to the more specified product-oriented services, until the most sophisticated use- and outcome-oriented services. The analysis reveals that, as service offerings become more complex, the three domains of digital technologies, servitization and BMs are progressively addressed not as isolated phenomena, but as interdependent elements. Building on this evidence, the article offers a novel contribution by systematizing a fragmented body of literature and by providing a clearer and more structured specification of digital servitization and its implications for BMs. Hence, from a theoretical perspective, the study advances existing knowledge by explicitly linking the three domains and clarifying their integration across different service configurations. From a managerial perspective, findings support managers in navigating digitalization and servitization, highlighting how they translate into distinct effects on BMs.</div></div>","PeriodicalId":50209,"journal":{"name":"Journal of Engineering and Technology Management","volume":"80 ","pages":"Article 101971"},"PeriodicalIF":3.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148183887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Customisation vs. ultimate customer transparency: Indications from a prototyping experiment for digital twins of customer demands 定制与最终客户透明度:来自客户需求数字孪生原型实验的指示
IF 3.9 3区 管理学
Journal of Engineering and Technology Management Pub Date : 2026-04-01 Epub Date: 2026-05-28 DOI: 10.1016/j.jengtecman.2026.101966
Dominik Oehlschläger , Marina Weiße , Andreas H. Glas , Michael Eßig
{"title":"Customisation vs. ultimate customer transparency: Indications from a prototyping experiment for digital twins of customer demands","authors":"Dominik Oehlschläger ,&nbsp;Marina Weiße ,&nbsp;Andreas H. Glas ,&nbsp;Michael Eßig","doi":"10.1016/j.jengtecman.2026.101966","DOIUrl":"10.1016/j.jengtecman.2026.101966","url":null,"abstract":"<div><div>This prototyping experiment evaluates the technical and economic feasibility of integrating Digital Twins of Customer Demands (DTCD) with different production strategies. DTCD is defined as data-driven and digital representations of customer preferences and product usage. Results demonstrate that DTCD enables the accurate digital capture and transformation of customer-specific data, allowing for both fully customised products and the optimisation of standardised production. The findings show that precise demand information, rather than customisation itself, drives value creation. DTCD enables near-custom quality at moderate cost, opening a new cost–performance window and redefining the efficiency–responsiveness trade-off.</div></div>","PeriodicalId":50209,"journal":{"name":"Journal of Engineering and Technology Management","volume":"80 ","pages":"Article 101966"},"PeriodicalIF":3.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148183888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
From optimization to disruption: The role of AI-driven innovation in shaping firms’ market competitiveness 从优化到颠覆:人工智能驱动的创新在塑造企业市场竞争力中的作用
IF 3.9 3区 管理学
Journal of Engineering and Technology Management Pub Date : 2026-04-01 Epub Date: 2026-04-11 DOI: 10.1016/j.jengtecman.2026.101962
Jiawei Xu , Baofeng Zhang , Haohui Li , Jianjun Lu , Yubing Yu
{"title":"From optimization to disruption: The role of AI-driven innovation in shaping firms’ market competitiveness","authors":"Jiawei Xu ,&nbsp;Baofeng Zhang ,&nbsp;Haohui Li ,&nbsp;Jianjun Lu ,&nbsp;Yubing Yu","doi":"10.1016/j.jengtecman.2026.101962","DOIUrl":"10.1016/j.jengtecman.2026.101962","url":null,"abstract":"<div><div>Firms increasingly invest in artificial intelligence(AI) to enhance market adaptability. Although prior research reveals AI’s optimization potential, whether AI-driven innovation generates disruption remains unclear. This study examines the mechanisms linking AI-driven innovation to market competitiveness. The regression results indicate that AI-driven radical innovation exerts a stronger effect than incremental innovation, highlighting a shift in the role of AI from optimization toward disruption. AI-driven innovation demonstrates stronger effects in concentrated, non–technology-intensive industries and operates through positive media attention, alleviated financial constraints, and reduced cost stickiness. Our findings imply that managers should balance AI-driven radical and incremental innovation portfolios with industry context.</div></div>","PeriodicalId":50209,"journal":{"name":"Journal of Engineering and Technology Management","volume":"80 ","pages":"Article 101962"},"PeriodicalIF":3.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147656952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Virtual agglomeration, innovation networks and competitive advantage: Empirical evidence from China's digital creative firms 虚拟集聚、创新网络与竞争优势:来自中国数字创意企业的经验证据
IF 3.9 3区 管理学
Journal of Engineering and Technology Management Pub Date : 2026-04-01 Epub Date: 2026-05-13 DOI: 10.1016/j.jengtecman.2026.101965
Jiamin Liu , Yongheng Fang
{"title":"Virtual agglomeration, innovation networks and competitive advantage: Empirical evidence from China's digital creative firms","authors":"Jiamin Liu ,&nbsp;Yongheng Fang","doi":"10.1016/j.jengtecman.2026.101965","DOIUrl":"10.1016/j.jengtecman.2026.101965","url":null,"abstract":"<div><div>In the context of digital transformation, the spatial development pattern of firms, innovation networks, and competition patterns are constantly changing. Leveraging the enabling advantages of digital technologies to stimulate the embedded efficacy of innovation networks is key to enhancing the competitive edge of digital creative firms. Based on the theories of industrial agglomeration and the resource-based view, this study empirically examines the influence and operational mechanisms of virtual agglomeration, innovation network embeddedness and competitive advantage, using data from Chinese digital creative firms between 2015 and 2021. The findings reveal that virtual agglomeration effectively enhances the competitive advantage of digital creative firms, with significant promotional effects demonstrated on both foundational and growing competitive advantages. The results of mechanism testing indicate that the relationship between virtual agglomeration and the competitive advantage of digital creative firms is mediated by innovation network embeddedness, while the embeddedness structures of cooperative and knowledge networks have distinct differential effects on competitive advantage. Therefore, digital creative firms should place significant emphasis on integrated interaction within virtual and geographical spaces to strengthen the role of virtual agglomeration in enhancing competitive advantages. Furthermore, they should actively implement systematic strategies centred on structural optimization to maximize the positive spillover effects of innovation networks.</div></div>","PeriodicalId":50209,"journal":{"name":"Journal of Engineering and Technology Management","volume":"80 ","pages":"Article 101965"},"PeriodicalIF":3.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147951025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Navigating the paradox of openness: Inside-out and outside-in strategies for industry 5.0 readiness under turbulence 驾驭开放的悖论:在动荡中为工业5.0准备就绪的由内而外和由外而内战略
IF 3.9 3区 管理学
Journal of Engineering and Technology Management Pub Date : 2026-04-01 Epub Date: 2026-04-08 DOI: 10.1016/j.jengtecman.2026.101960
Swapan Ghosh , Shikha Singh
{"title":"Navigating the paradox of openness: Inside-out and outside-in strategies for industry 5.0 readiness under turbulence","authors":"Swapan Ghosh ,&nbsp;Shikha Singh","doi":"10.1016/j.jengtecman.2026.101960","DOIUrl":"10.1016/j.jengtecman.2026.101960","url":null,"abstract":"<div><div>This study investigates how open innovation configures Industry 5.0 readiness in large manufacturing firms. We conceptualize Industry 5.0 readiness as a socio-technical dynamic capability, modeled as a second-order construct that integrates human, process, and technology capabilities using the People-Process-Technology (PPT) framework. Building on open innovation and contingency theory, we develop a moderated structural model in which inside-out open innovation (IO-OI) and outside-in open innovation (OI-OI) jointly shape Industry 5.0 readiness under varying levels of technological and market turbulence. We test the model using partial least squares structural equation modelling on survey data from 227 senior managers in 80 publicly listed U.S. manufacturing firms. The results indicate that IO-OI has a broad and sizeable positive association with Industry 5.0 readiness across all three PPT dimensions, whereas OI-OI has more selective effects, primarily strengthening technology capability and moderately enhancing process capability. Technological turbulence amplifies the positive effect of inside-out openness on readiness, while market turbulence does not systematically enhance the benefits of openness and may constrain them. The study advances knowledge by (i) providing an empirically validated, PPT-based operationalization of Industry 5.0 readiness as a dynamic capability, (ii) distinguishing the distinct mechanisms through which IO-OI and OI-OI develop socio-technical readiness, revealing asymmetric patterns not previously documented, and (iii) extending contingency theory by demonstrating that environmental turbulence operates conditionally rather than uniformly, with technological turbulence selectively enhancing IO-OI effects while market turbulence shows limited moderating influence. These findings challenge prevailing assumptions about the universality of openness strategies and the effects of turbulence in organizational transformation.</div></div>","PeriodicalId":50209,"journal":{"name":"Journal of Engineering and Technology Management","volume":"80 ","pages":"Article 101960"},"PeriodicalIF":3.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147656954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The bright side of dark traits: CEO narcissism and corporate innovation excellence 黑暗特质的光明面:CEO自恋和企业卓越创新
IF 3.9 3区 管理学
Journal of Engineering and Technology Management Pub Date : 2026-01-01 Epub Date: 2026-02-05 DOI: 10.1016/j.jengtecman.2026.101946
Xue Lei, Xueguo Xu, Hetong Yuan
{"title":"The bright side of dark traits: CEO narcissism and corporate innovation excellence","authors":"Xue Lei,&nbsp;Xueguo Xu,&nbsp;Hetong Yuan","doi":"10.1016/j.jengtecman.2026.101946","DOIUrl":"10.1016/j.jengtecman.2026.101946","url":null,"abstract":"<div><div>How CEO personality traits shape breakthrough innovation remains insufficiently understood. Drawing on upper echelons theory, this study analyzes 8722 firm-year observations from Chinese A-share listed companies (2012–2022), measuring CEO narcissism through signature size. Results demonstrate that CEO narcissism positively influences breakthrough technological innovation through enhanced R&amp;D investment intensity and exploration into new technological domains. These effects strengthen in non-state enterprises and competitive industries, persisting during the COVID-19 pandemic. Our findings illuminate how executive traits translate into organizational innovation capabilities, offering insights for executive selection and innovation management.</div></div>","PeriodicalId":50209,"journal":{"name":"Journal of Engineering and Technology Management","volume":"79 ","pages":"Article 101946"},"PeriodicalIF":3.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146173637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Underperformance duration and SMEs’ technology and market search: The moderating roles of firm risks and industrial munificence 业绩不佳持续时间与中小企业技术和市场搜索:企业风险和产业慷慨的调节作用
IF 3.9 3区 管理学
Journal of Engineering and Technology Management Pub Date : 2026-01-01 Epub Date: 2026-02-05 DOI: 10.1016/j.jengtecman.2026.101945
Qingwen Bo , Bo Zou , Zhouyu Li , Shufeng Xiao
{"title":"Underperformance duration and SMEs’ technology and market search: The moderating roles of firm risks and industrial munificence","authors":"Qingwen Bo ,&nbsp;Bo Zou ,&nbsp;Zhouyu Li ,&nbsp;Shufeng Xiao","doi":"10.1016/j.jengtecman.2026.101945","DOIUrl":"10.1016/j.jengtecman.2026.101945","url":null,"abstract":"<div><div>Based on the behavioral theory of the firm, we theoretically analyze how underperformance duration affects SMEs’ decisions to initiate technology search and market search for knowledge and how these relationships are moderated by firm risks and industrial munificence. Using data on 547 listed high-tech SMEs, we find that underperformance duration leads to a continuous decline in technology search and an inverted U-shaped relationship with market search. Firm risks and industrial munificence significantly moderate these relationships. This study deepens the understanding of SMEs’ search behaviors for problem-solving and contributes to search-related literature by integrating internal and external environmental factors.</div></div>","PeriodicalId":50209,"journal":{"name":"Journal of Engineering and Technology Management","volume":"79 ","pages":"Article 101945"},"PeriodicalIF":3.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146173639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A new model of dynamic relationships involving AI innovation intensity based on patents: Evidence from the semiconductor manufacturing industry 基于专利的人工智能创新强度动态关系新模型:来自半导体制造业的证据
IF 3.9 3区 管理学
Journal of Engineering and Technology Management Pub Date : 2026-01-01 Epub Date: 2025-12-26 DOI: 10.1016/j.jengtecman.2025.101937
Yuwen Chen , Cherng G. Ding
{"title":"A new model of dynamic relationships involving AI innovation intensity based on patents: Evidence from the semiconductor manufacturing industry","authors":"Yuwen Chen ,&nbsp;Cherng G. Ding","doi":"10.1016/j.jengtecman.2025.101937","DOIUrl":"10.1016/j.jengtecman.2025.101937","url":null,"abstract":"<div><div>As a core enabler of artificial intelligence (AI), the semiconductor manufacturing sector plays a pivotal role in shaping the trajectory of AI development. The rapid advancement of AI has driven technology-intensive firms to pursue continuous innovation and sustain competitive advantages. This study examines the dynamic relationship between the change in R&amp;D expenditure and the change in AI innovation intensity, and investigates how this relationship is moderated by the change in technological competence and the change in AI technological diversification. Using a longitudinal dataset of major global semiconductor manufacturing firms, we find that the change in R&amp;D expenditure does not directly affect the change in AI innovation intensity. However, an increase in technological competence strengthens the positive effect of R&amp;D expenditure change on AI innovation intensity change, whereas an increase in AI technological diversification weakens—and may even reverse—this effect. By integrating the resource-based view, dynamic capabilities lens, and transaction cost theory, this study provides new insights into how capability configuration and strategic alignment shape AI innovation outcomes. The managerial implications of these findings are also discussed.</div></div>","PeriodicalId":50209,"journal":{"name":"Journal of Engineering and Technology Management","volume":"79 ","pages":"Article 101937"},"PeriodicalIF":3.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145841125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Integrating responsible and sustainable innovation into new product development within the fast-moving consumer goods sector: Economic and environmental impacts 将负责任和可持续的创新融入快速消费品行业的新产品开发:经济和环境影响
IF 3.9 3区 管理学
Journal of Engineering and Technology Management Pub Date : 2026-01-01 Epub Date: 2026-02-13 DOI: 10.1016/j.jengtecman.2026.101947
Sercan Ozcan , Diego Vazquez-Brust , Alessio Ishizaka , Virginie Litaudon , Yunes Mukri
{"title":"Integrating responsible and sustainable innovation into new product development within the fast-moving consumer goods sector: Economic and environmental impacts","authors":"Sercan Ozcan ,&nbsp;Diego Vazquez-Brust ,&nbsp;Alessio Ishizaka ,&nbsp;Virginie Litaudon ,&nbsp;Yunes Mukri","doi":"10.1016/j.jengtecman.2026.101947","DOIUrl":"10.1016/j.jengtecman.2026.101947","url":null,"abstract":"<div><div>We examine the ways in which responsibility and sustainability are built into new product development, and the results of this integration, in the fast-moving consumer goods sector of the UK. This study is based on 84 structured interviews with managers and analyse the data using rough set theory, an approach that can reveal attribute importance and multiple decision configurations without distributional assumptions, and which is suitable for ordinal, manager-rated data. We find that attention to sustainability during the ideation stage is associated with stronger overall performance. Market uncertainty is the most consequential situational barrier to sustainability outcomes, and design cost constrains implementation during development. In terms of economic performance, outsourcing networks are the most influential source of ideas. Responsibility is most often addressed at the design and development stage, although earlier attention is linked to better results. This study advances a contingency view of new product development by distinguishing between short-term choice factors, such as selection criteria and design cost, and longer-term situation factors, for example uncertainty, and by mapping their influence across stages. For managers, we offer a stage-sensitive framework that indicates where to introduce sustainability and which partner networks to activate. To the best of our knowledge, this is the first study to map stage-based configurations that link responsible choices to both economic and sustainability outcomes in the fast-moving consumer goods sector of the UK using rough set theory.</div></div>","PeriodicalId":50209,"journal":{"name":"Journal of Engineering and Technology Management","volume":"79 ","pages":"Article 101947"},"PeriodicalIF":3.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146173638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","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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