Strategic Management Journal最新文献

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The new needs friends: Simmelian strangers and the selection of novelty 新人需要朋友:Simmelian陌生人和对新奇事物的选择
1区 管理学
Strategic Management Journal Pub Date : 2023-11-05 DOI: 10.1002/smj.3564
Athanasia Lampraki, Christos Kolympiris, Thorsten Grohsjean, Linus Dahlander
{"title":"The new needs friends: Simmelian strangers and the selection of novelty","authors":"Athanasia Lampraki, Christos Kolympiris, Thorsten Grohsjean, Linus Dahlander","doi":"10.1002/smj.3564","DOIUrl":"https://doi.org/10.1002/smj.3564","url":null,"abstract":"Abstract Research Summary The paradox of rejecting novel ideas while being motivated to select them exists in many realms. Deviating from prior research that investigated several internal levers to promote the funding of novel ideas in the sciences, we focus on an external lever by investigating how seconded employees increase the selection of novel ideas in two ways: (1) they select more novel ideas themselves, and (2) they influence permanent employees to do the same. Combining unique quantitative longitudinal data and 37 in‐depth interviews, we test our predictions in the secondment program at the National Science Foundation and find broad support for our theoretical arguments. Our findings have implications for scholars of science and innovation by proposing a relatively light‐touch intervention to facilitate the selection of novel ideas. Managerial Summary Organizations often face a paradox: they want to select novel ideas but tend to reject them. This study shifts focus from internal measures to an external solution, examining how seconded employees can help. Through both quantitative data and interviews at the National Science Foundation's secondment program, we found that seconded employees choose more novel ideas and influence permanent staff to do the same. This suggests a simple intervention can significantly boost the acceptance of innovative ideas, offering valuable insights for those in the science and innovation. Understanding this dynamic can empower managers to strategically leverage seconded employees, fostering a more innovative and adaptive organizational culture.","PeriodicalId":22023,"journal":{"name":"Strategic Management Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135725484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Community influence on microfinance loan defaults under crisis conditions: Evidence from Indian demonetization 危机条件下社区对小额贷款违约的影响:来自印度废钞运动的证据
1区 管理学
Strategic Management Journal Pub Date : 2023-10-25 DOI: 10.1002/smj.3558
Arzi Adbi, Matthew Lee, Jasjit Singh
{"title":"Community influence on microfinance loan defaults under crisis conditions: Evidence from Indian demonetization","authors":"Arzi Adbi, Matthew Lee, Jasjit Singh","doi":"10.1002/smj.3558","DOIUrl":"https://doi.org/10.1002/smj.3558","url":null,"abstract":"Abstract Research Summary The microfinance “group lending” approach has achieved widespread success in promoting high rates of repayment, and thus the viability of financial access, in very low‐income environments. Yet group lending, which relies on social connections between borrowers to reinforce repayment, may be vulnerable under crisis conditions in which defaults are commonplace. We explore this possibility in the context of the liquidity crisis that followed India's 2016 demonetization policy. Using proprietary data on the repayment behavior of about two million microfinance borrowers, we find evidence of disproportionate localization of defaults within lending communities. Further analysis reveals evidence consistent with borrower‐to‐borrower spread of defaults not only through formal joint‐liability connections but also through informal community‐level connections, the latter effect being especially pronounced for borrowers from the same religion. Managerial Summary Microfinance lenders have successfully employed a “group lending” approach that holds borrowers within a small group responsible for each other's loans, thus creating strong social pressures for repayment. The findings of this study underscore potential vulnerabilities in the group lending model during economic crises. We analyze the loan repayment behavior of two million microfinance borrowers during a liquidity crisis precipitated by India's 2016 demonetization policy, finding that the resulting defaults were clustered within particular lending communities. Further analysis suggests that social processes within communities played a role in spreading defaults, not only through formal ties between borrowers who were responsible for each other's repayments, but also through informal social ties. The estimated effect of informal social ties was particularly strong for borrowers who shared the same religion.","PeriodicalId":22023,"journal":{"name":"Strategic Management Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135166077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Demand pull versus resource push training approaches to entrepreneurship: A field experiment 需求拉动与资源推动的创业培训方法:实地实验
1区 管理学
Strategic Management Journal Pub Date : 2023-10-25 DOI: 10.1002/smj.3560
Simone Santamaria, Niloofar Abolfathi, Ishtiaq Pasha Mahmood
{"title":"Demand pull versus resource push training approaches to entrepreneurship: A field experiment","authors":"Simone Santamaria, Niloofar Abolfathi, Ishtiaq Pasha Mahmood","doi":"10.1002/smj.3560","DOIUrl":"https://doi.org/10.1002/smj.3560","url":null,"abstract":"Abstract Research Summary We compare the efficacy of two broad approaches to entrepreneurship training: a training prioritizing demand‐side activities versus a training prioritizing resource‐side activities. We do so by running a field experiment inside a 6‐month entrepreneurship program involving 236 early‐stage entrepreneurs. Inspired by our training, the first group invested more time interacting with potential customers and developing a deep understanding of customer needs and problems. The other group, in contrast, spent more time identifying and exploiting their core resources such as their network. Our results reveal that the training prioritizing demand‐side activities is substantially more effective. At the end of the program, the group exposed to the demand‐side training acquired more than twice the number of customers and generated revenues 65% higher than the other group. Managerial Summary In this paper, we aim to identify effective practices for supporting nascent entrepreneurs amidst the proliferation of entrepreneurship training programs. In particular, we launched a 6‐month entrepreneurship program involving 236 early‐stage entrepreneurs and exposed them to different training approaches. We discovered that a training approach focused on demand‐side activities, such as identifying customer persona, collecting reliable customer information, and interpreting their feedback, is more effective in improving new venture performance than a training approach focused on resource‐side activities such as helping entrepreneurs identify and leverage their resources and capabilities. Our findings emphasize the importance of developing skills related to customer analysis, market understanding, and collecting customer feedback during the early stages of a startup journey and can provide insights for designing effective entrepreneurship programs.","PeriodicalId":22023,"journal":{"name":"Strategic Management Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135112820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Acqui‐hires: Redeployment and retention of human capital post‐acquisition 收购雇佣:收购后人力资本的重新部署和保留
1区 管理学
Strategic Management Journal Pub Date : 2023-10-18 DOI: 10.1002/smj.3556
Beril Boyacıoğlu, Mahmut N. Özdemir, Samina Karim
{"title":"Acqui‐hires: Redeployment and retention of human capital post‐acquisition","authors":"Beril Boyacıoğlu, Mahmut N. Özdemir, Samina Karim","doi":"10.1002/smj.3556","DOIUrl":"https://doi.org/10.1002/smj.3556","url":null,"abstract":"Abstract Research Summary Acqui‐hires are now a prevalent strategic mechanism by which firms obtain talented human resources. They differ from traditional acquisitions in that they are always integrated and the focus is the people, not the product or service. Thus, how firms reconfigure through the redeployment and retention of acqui‐hired human resources during post‐acquisition integration is particularly critical. We find that when the acquired start‐up has disruptive (vs. nondisruptive) know‐how, the acqui‐hired team is preserved (vs. dispersed) and integrated as a whole into an acquirer's existing business unit, and also that the founder of the acquired start‐up is assigned to a high status position. Furthermore, we show that a lack of fit between acquired know‐how type and integration mode has a positive relationship with the premature exit of acqui‐hired founders. Managerial Summary Acqui‐hires are a form of acquisitions in which the acquiring firm's goal is to obtain the talented human capital of the target firm. Our study addresses how the acqui‐hired team is integrated into the acquiring firm and what status position the acqui‐hired founder is given, post‐acquisition. Our results reveal that these depend on the type of know‐how being acquired; if the acqui‐hired know‐how is disruptive (versus not) then it is more likely that the team is preserved (versus dispersed) and the founder is given a high status position at the parent firm. Managers should be aware that a mismatch in integration—such as acqui‐hiring disruptive know‐how and not preserving the team in a business unit—can have negative implications such as the premature departure of the founder(s).","PeriodicalId":22023,"journal":{"name":"Strategic Management Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135888988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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: 2
Coaxing corporations: Enriching the conceptualization of governments as strategic actors 哄骗企业:丰富政府作为战略行动者的概念
1区 管理学
Strategic Management Journal Pub Date : 2023-10-02 DOI: 10.1002/smj.3557
Michael J. Gill, David J. Gill
{"title":"Coaxing corporations: Enriching the conceptualization of governments as strategic actors","authors":"Michael J. Gill, David J. Gill","doi":"10.1002/smj.3557","DOIUrl":"https://doi.org/10.1002/smj.3557","url":null,"abstract":"Abstract Research Summary Little is known about how governments secure discrete resources from global corporations over which they have limited direct control. Utilizing declassified archival sources, we examine how the UK government influenced Moody's and Standard & Poor's to provide the highest possible credit ratings in 1978, despite the UK receiving an International Monetary Fund bailout 2 years earlier. We develop a process model to explain how democratic government officials employ distinctive processes to enable and facilitate a nonmarket approach of corporate coaxing to influence corporations' decision making. We thereby enrich the concept of governments as a strategic actors by illuminating how officials act to secure resources when in a position of dependence. Managerial Summary We sought to understand how governments attempt to influence corporations' decision making when they have limited direct control over these corporations. We examined the historical case of the UK government seeking to influence Moody's and Standard and Poor's. In this case, we identified the distinctive strategy of corporate coaxing to explain how government officials navigate the distinctive constraints, and leverage the unique strengths, of their democratic state, to exert influence on private and global corporations. Our findings show how governments can be more active stakeholders in corporate activity than commonly assumed, as their subtle influence can extend beyond state policies or regulations.","PeriodicalId":22023,"journal":{"name":"Strategic Management Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135899577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Incidence and Performance of Spinouts and Incumbent New Establishments: Role of Selection and Redeployability within Parent Firms. 分拆和现有新机构的发生率和绩效:母公司内部选择和可重新部署的作用。
IF 8.3 1区 管理学
Strategic Management Journal Pub Date : 2023-10-01 Epub Date: 2023-05-17 DOI: 10.1002/smj.3510
Natarajan Balasubramanian, Mariko Sakakibara
{"title":"Incidence and Performance of Spinouts and Incumbent New Establishments: Role of Selection and Redeployability within Parent Firms.","authors":"Natarajan Balasubramanian,&nbsp;Mariko Sakakibara","doi":"10.1002/smj.3510","DOIUrl":"10.1002/smj.3510","url":null,"abstract":"<p><strong>Research summary: </strong>Using matched employer-employee data from 30 U.S. states covering a wide range of industries, we compare spinouts with new establishments formed by incumbents (INEs). We propose a selection-based framework comprising <i>idea selection</i> by parents to internally implement ideas as INEs, <i>entrepreneurial selection</i> by founders to form spinouts, and <i>exit selection</i> to close ventures. Consistent with parents choosing better ideas in the idea selection stage, we find that INEs perform relatively better than spinouts, and more so with larger parents. Regarding the entrepreneurial selection stage, we find evidence consistent with resource requirements being a greater entry barrier to spinouts. Parents' resource redeployment opportunities are associated with lower relative survival of INEs, consistent with their being subject to greater selection pressures in the exit selection stage.</p><p><strong>Managerial summary: </strong>Spinouts, or new ventures started by employees leaving a parent firm, have received special attention because spinouts tend to outperform other types of new firms. This superior performance is typically attributed to the better knowledge and higher-quality ideas developed by founders at the parent firms. However, parent firms can also select and implement such ideas internally, particularly if they are good quality ideas. We compare spinouts with new establishments formed within parent firms and find that consistent with such a process of selection, the latter outperform spinouts, more so in the case of larger parents. Interestingly, new establishments of parent firms tend to close at a greater rate than spinouts, consistent with parent firms being able to redeploy resources elsewhere within their firms.</p>","PeriodicalId":22023,"journal":{"name":"Strategic Management Journal","volume":null,"pages":null},"PeriodicalIF":8.3,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10503942/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10286048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Behavioral agency and the efficacy of analysts as external monitors: Examining the moderating role of CEO personality 行为代理与分析师的外部监督效能:检视CEO人格的调节作用
1区 管理学
Strategic Management Journal Pub Date : 2023-09-26 DOI: 10.1002/smj.3548
Alina G. Andrei, Mirko H. Benischke, Geoffrey P. Martin
{"title":"Behavioral agency and the efficacy of analysts as external monitors: Examining the moderating role of CEO personality","authors":"Alina G. Andrei, Mirko H. Benischke, Geoffrey P. Martin","doi":"10.1002/smj.3548","DOIUrl":"https://doi.org/10.1002/smj.3548","url":null,"abstract":"Abstract We integrate behavioral agency research and the five‐factor model of personality to re‐visit investment analysts' efficacy as a mechanism for reducing agency costs. We highlight the role of personality in shaping how CEOs respond to analyst recommendations, leading to boundary conditions for the efficacy of analysts as external monitors. We theorize that the extent to which a CEO perceives a threat from more positive analyst recommendations is contingent upon their personality, which shapes their subjective interpretation of the recommendation and their use of income‐increasing earnings management in response. Our findings suggest that personality is critical to understanding how CEOs respond to external monitors and the agency costs associated with the positive analyst recommendations.","PeriodicalId":22023,"journal":{"name":"Strategic Management Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134961087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
When firms may benefit from sticking with an old technology 当公司可能从坚持使用旧技术中获益时
1区 管理学
Strategic Management Journal Pub Date : 2023-09-21 DOI: 10.1002/smj.3551
Xu Li
{"title":"When firms may benefit from sticking with an old technology","authors":"Xu Li","doi":"10.1002/smj.3551","DOIUrl":"https://doi.org/10.1002/smj.3551","url":null,"abstract":"Abstract Research Summary How should firms respond to technological discontinuities in order to achieve greater performance? In contrast to most studies that advocate a timely transition from the old to the new technology, this paper posits that in markets where a discontinuous technology exposes customers' latent preference heterogeneity for certain old technology attributes, firms may ultimately experience a performance surge by adhering to the old technology during technological change. Explicitly, I theorize a U‐shaped relationship within such a market between competitors' increasing adoption of the new technology and the performance of firms that stick with the old technology. This prediction is thoroughly examined using comprehensive data from the traditional Chinese medicine industry in China during the 1990s and receives robust empirical support. Managerial Summary In some markets, the rise of a discontinuous technology, besides posing a substitute threat to the old technology, further exposes niche segments where customers continue to favor the old technology. This paper predicts that within such a market, as competitors increasingly adopt the new technology for varied motives, firms sticking with the old technology may see their performance declining before rebounding and potentially reaching new heights. Analyses using archival data from the traditional Chinese medicine industry in China during the 1990s provide robust support for this prediction. The arguments and findings of this paper offer an “existence proof” that when confronted with a technological discontinuity, adhering to the old technology may also represent an effective strategy that ultimately improves firm performance.","PeriodicalId":22023,"journal":{"name":"Strategic Management Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136237122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Performance metrics in strategy research: A new metric and method for assessing dynamic value 战略研究中的绩效指标:动态价值评估的新指标和新方法
1区 管理学
Strategic Management Journal Pub Date : 2023-09-20 DOI: 10.1002/smj.3550
David Souder, J. Myles Shaver, Jared Harris, Abdullatif Alrashdan
{"title":"Performance metrics in strategy research: A new metric and method for assessing dynamic value","authors":"David Souder, J. Myles Shaver, Jared Harris, Abdullatif Alrashdan","doi":"10.1002/smj.3550","DOIUrl":"https://doi.org/10.1002/smj.3550","url":null,"abstract":"Abstract Research Summary We discuss two research design considerations that jointly influence the choice of financial performance metrics in strategy research: (a) expected temporal payoff of the strategic choice and (b) source of variation invoked in the research design (i.e., within‐firm vs. between‐firm comparisons). We map existing performance metrics commonly used in the research literature to these considerations, and highlight the lack of performance metrics well suited for the combination of strategies with not‐well‐defined temporal payoffs and within‐firm research designs. To remedy this, we introduce a value partitioning methodology that provides a performance metric we call dynamic value. We apply this methodology and demonstrate how it generates additional insights about how cash holdings affect firm performance. Managerial Summary This article introduces the value partitioning methodology for interpreting two distinct elements of stock market valuations: (a) the firm's implied future value from continuing operations in a “steady state” and (b) the market's estimate of dynamic future value associated with the firm's strategic choices or competitive positioning. We describe situations where the latter element is useful for measuring strategy performance. We apply this methodology and demonstrate how it generates additional insights about how cash holdings affect firm performance.","PeriodicalId":22023,"journal":{"name":"Strategic Management Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136313847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Technology adoption and innovation: The establishment of airmail and aviation innovation in the United States, 1918–1935 技术采用和创新:1918-1935年美国航空邮件的建立和航空创新
1区 管理学
Strategic Management Journal Pub Date : 2023-09-20 DOI: 10.1002/smj.3555
Eunhee Sohn, Robert Seamans, Daniel B. Sands
{"title":"Technology adoption and innovation: The establishment of airmail and aviation innovation in the <scp>United States</scp>, 1918–1935","authors":"Eunhee Sohn, Robert Seamans, Daniel B. Sands","doi":"10.1002/smj.3555","DOIUrl":"https://doi.org/10.1002/smj.3555","url":null,"abstract":"Abstract Research Summary This article explores how technology adoption can shape innovative activity. We study this issue within the historical context of the introduction and expansion of airmail across the United States between 1918 and 1935 using archival material and a novel dataset of early 20th century patents. A joint qualitative and quantitative investigation indicates that local individual and corporate actors applied diverse pools of knowledge and intensified their work with aviation innovations following airmail entry into their county. Moreover, we find evidence that the co‐location of aircraft manufacturing and airmail operations was associated with more corporate innovations that facilitated economies of scale and corresponded to increased technological diversification of firms' aviation patent portfolios. Ultimately, this paper deepens our understanding of the antecedents, consequences, and organizational processes that underpin innovation. Managerial Summary This research investigates how aviation innovation in the United States was influenced by the postal service's early 20th century introduction and expansion of airmail routes. Our results indicate that counties with an airmail route experienced increased aviation‐related patenting by individual and corporate inventors relative to similar counties that did not receive an airmail route. Moreover, we find that corporate inventors working in airmail counties that also contained aircraft manufacturers were particularly active in technological areas that enhanced aircraft economies of scale and patented in a wider range of aviation‐related domains. An implication of this work for managers and policymakers is that early access to nascent technology can be a driver of local innovation and that spillovers can benefit diverse economic actors working in close proximity.","PeriodicalId":22023,"journal":{"name":"Strategic Management Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136306638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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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