Journal of Business Logistics最新文献

Improving Driver Engagement in Delivery and Rideshare Services

IF 11.2 2区管理学

Journal of Business Logistics Pub Date : 2025-04-06 DOI: 10.1111/jbl.70011

Lance W. Saunders, Vincent E. Castillo, William J. Rose, Anne E. Dohmen, John E. Bell

{"title":"Improving Driver Engagement in Delivery and Rideshare Services","authors":"Lance W. Saunders, Vincent E. Castillo, William J. Rose, Anne E. Dohmen, John E. Bell","doi":"10.1111/jbl.70011","DOIUrl":"https://doi.org/10.1111/jbl.70011","url":null,"abstract":"<div>\u0000 \u0000 <p>Due to driver autonomy, delivery and rideshare platforms in the sharing economy (SE) face uncertainty in service capacity planning. This study investigates how the alignment between the technical and social subsystems within the overall socio-technical system of SE platforms influences driver engagement. Drawing on socio-technical systems theory, we conceptualize SE platforms as systems defined by the organizational design constructs of centralization, formalization, and complexity. Using a discrete choice experiment with 100 experienced SE drivers, we examine how platform design attributes affect drivers' utility and engagement probability. Our findings reveal that drivers value flexibility, preferring platforms that offer direct task allocation and single-task acceptance features. Contrary to expectations, drivers generally favor base pay–oriented remuneration over promotion-oriented structures. Individual driver characteristics such as SE income dependency and multi-apping tendencies significantly influence platform preferences. The findings contribute to logistics research by empirically establishing the relationship between platform structure and driver utility and by extending the application of organizational design theory to digital labor platforms. Our results provide insights into how firms can reduce capacity uncertainty by engaging SE drivers within their networks, highlighting the importance of aligning platform design with the preferences of a heterogeneous driver population.</p>\u0000 </div>","PeriodicalId":48090,"journal":{"name":"Journal of Business Logistics","volume":"46 2","pages":""},"PeriodicalIF":11.2,"publicationDate":"2025-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143787052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Understanding Supply Chain Knowledge Mobilization Barriers From the Middle-Range Perspective: An Empirical Investigation of Argentina's Agri-Food Industry

IF 11.2 2区管理学

Journal of Business Logistics Pub Date : 2025-03-24 DOI: 10.1111/jbl.70009

Guoqing Zhao, Ying Xie, Denis Dennehy, Samuel Fosso Wamba

{"title":"Understanding Supply Chain Knowledge Mobilization Barriers From the Middle-Range Perspective: An Empirical Investigation of Argentina's Agri-Food Industry","authors":"Guoqing Zhao, Ying Xie, Denis Dennehy, Samuel Fosso Wamba","doi":"10.1111/jbl.70009","DOIUrl":"https://doi.org/10.1111/jbl.70009","url":null,"abstract":"<p>Despite considerable research attention to supply chain knowledge mobilization (KMob) barriers, understanding of why, how, and when they emerge in practice remains limited. We address this knowledge deficit by using middle-range theory (MRT) as a theoretical lens to examine supply chain KMob barriers in their naturally occurring environment. Drawing on 42 in-depth, semi-structured interviews with Argentinian agri-food supply chain (AFSC) practitioners, we present novel insights into the emergence of AFSC KMob barriers. First, our findings indicate the prevalence of 11 individual, intra-organizational, and inter-organizational KMob barriers in Argentinian AFSCs. Second, Argentina's political, economic, social, technological, legal, and cultural (PESTLC) environment contribute to these barriers. For example, the cultural environment, characterized by strong hierarchy and weak intellectual autonomy, may have negative effects on AFSC practitioners' KMob behaviors and perceptions, resulting in resistance to knowledge sharing, while long-term political and economic instability poses challenges for intra- and inter-organizational KMob. Third, these 11 KMob barriers elicit both semantic and pragmatic knowledge boundaries that thwart AFSC KMob. Our study extends the applicability of MRT to supply chain KMob research and provides a framework for better understanding KMob barriers. The study has important implications for agricultural research institutions and focal companies of local AFSCs.</p>","PeriodicalId":48090,"journal":{"name":"Journal of Business Logistics","volume":"46 2","pages":""},"PeriodicalIF":11.2,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbl.70009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Cross-Tier Supplier Collaboration on Buyer Firm Innovation Performance: The Moderating Role of Geographic Distance and Relationship Longevity

IF 11.2 2区管理学

Journal of Business Logistics Pub Date : 2025-03-24 DOI: 10.1111/jbl.70010

Ellie C. Falcone, Jordan M. Barker, Haozhe Chen

{"title":"Cross-Tier Supplier Collaboration on Buyer Firm Innovation Performance: The Moderating Role of Geographic Distance and Relationship Longevity","authors":"Ellie C. Falcone, Jordan M. Barker, Haozhe Chen","doi":"10.1111/jbl.70010","DOIUrl":"https://doi.org/10.1111/jbl.70010","url":null,"abstract":"<p>The supply base is increasingly recognized as a critical enabler of firm innovation. While existing research has linked direct collaboration with suppliers to superior innovation performance, it has largely overlooked the relational dynamics occurring further upstream in the supply chain. We introduce the concept of <i>cross-tier supplier collaboration</i>—strategic alliances between first- and lower-tier suppliers (i.e., suppliers' suppliers) within a focal firm's supply chain focused on sharing or co-developing resources—and explore how this not-so-visible collaboration serves as a source of superior innovation for the buyer firm. Drawing on the extended resource-based view (ERBV), we construct and analyze a large panel dataset compiled from multiple archival data sources of public manufacturers, their first-tier suppliers, and lower-tier suppliers. The empirical analysis reveals that cross-tier supplier collaboration enhances buyer firm performance in terms of innovation efficiency. This positive relationship is strengthened when first- and lower-tier suppliers have long-term relationships but is weakened when these suppliers are geographically distant from each other. This study and its discoveries make a valuable contribution to the theories and literature on extended supply base and firm innovation while also providing practical guidance for managerial sourcing decisions.</p>","PeriodicalId":48090,"journal":{"name":"Journal of Business Logistics","volume":"46 2","pages":""},"PeriodicalIF":11.2,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbl.70010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Does It Matter to the C-Suite? The Role of Top Management in a Purchasing Manager's Responsible Sourcing Intentions

IF 11.2 2区管理学

Journal of Business Logistics Pub Date : 2025-03-24 DOI: 10.1111/jbl.70012

Satabdi Hazarika, Yanji Duan, Tingting Yan, John A. Aloysius

{"title":"Does It Matter to the C-Suite? The Role of Top Management in a Purchasing Manager's Responsible Sourcing Intentions","authors":"Satabdi Hazarika, Yanji Duan, Tingting Yan, John A. Aloysius","doi":"10.1111/jbl.70012","DOIUrl":"https://doi.org/10.1111/jbl.70012","url":null,"abstract":"<p>Firms face increased scrutiny from both governments and consumers about socially responsible practices. Firms may address social issues in their supply chains by selecting socially responsible suppliers—a decision heavily influenced by the preferences of purchasing managers. Although prior research provides empirical evidence that this decision is affected by different stakeholders, these results are usually at the firm level and do not reveal how a purchasing manager forms their preference toward socially responsible suppliers. This study, using social projection theory and a behavioral experiment with supply chain managers, studies the influence of purchasing managers' perception of top management beliefs (PTMB) on socially responsible sourcing intentions (SRSS). Purchasing managers' internal values (ISI) strongly shape their PTMB, both directly and indirectly influencing purchasing managers' SRSS, while external stakeholder pressures from suppliers and customers (EPSP) impact SRSS indirectly through PTMB. Regulatory pressure (RP), however, shows no effect on PTMB. A post hoc analysis reveals that purchasing managers with high ISI favored sustainable suppliers, even when organizational priorities indicated by top management action (TMA) are not about socially responsible sourcing. Our findings provide a nomological network explaining a manager's responsible sourcing decisions and provide guidance for firms to enhance their responsible sourcing.</p>","PeriodicalId":48090,"journal":{"name":"Journal of Business Logistics","volume":"46 2","pages":""},"PeriodicalIF":11.2,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbl.70012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

The Innovative Roles of Supply Chain Finance Platforms in Generating Competitive Advantage

IF 11.2 2区管理学

Journal of Business Logistics Pub Date : 2025-02-19 DOI: 10.1111/jbl.70006

Chenyu Wang, Wei Wang, Shuting Li, Xiangfeng Chen

{"title":"The Innovative Roles of Supply Chain Finance Platforms in Generating Competitive Advantage","authors":"Chenyu Wang, Wei Wang, Shuting Li, Xiangfeng Chen","doi":"10.1111/jbl.70006","DOIUrl":"https://doi.org/10.1111/jbl.70006","url":null,"abstract":"<div>\u0000 \u0000 <p>Supply chain finance (SCF) platforms have become increasingly important in providing financial services within supply chains. However, their role in creating competitive advantage is not well understood. This paper presents findings from an in-depth multiple-case study of four representative SCF service-providing platforms in China, aiming to examine why firms build SCF platforms, the innovative strategies firms adopt to develop SCF solutions, and the impact of these solutions on their business models and their competitive advantage. Data were collected through multiple interviews. The research findings suggest that the value disciplines of SCF platforms evolve through different stages in response to changes in customer needs. This evolution progresses from pursuing product and service leadership to operational excellence and, lastly, to customer intimacy. This study also identifies the various financial products and services provided by these SCF platforms at each stage. It then further points out the direction of creating ecosystem value as the ultimate goal of the SCF platforms. This study enhances the understanding of the innovative roles of SCF platforms and their impact on the development of new business models and gaining a competitive advantage based on value disciplines.</p>\u0000 </div>","PeriodicalId":48090,"journal":{"name":"Journal of Business Logistics","volume":"46 2","pages":""},"PeriodicalIF":11.2,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Is Your Supply Chain Breaking Down? Call AAA for Resilience Assistance

IF 11.2 2区管理学

Journal of Business Logistics Pub Date : 2025-01-30 DOI: 10.1111/jbl.70002

Andrew Zeiser, Mikaella Polyviou, Adegoke Oke, A. Michael Knemeyer, Keely Croxton

{"title":"Is Your Supply Chain Breaking Down? Call AAA for Resilience Assistance","authors":"Andrew Zeiser, Mikaella Polyviou, Adegoke Oke, A. Michael Knemeyer, Keely Croxton","doi":"10.1111/jbl.70002","DOIUrl":"https://doi.org/10.1111/jbl.70002","url":null,"abstract":"<p>Supply chain disruptions regularly interrupt the normal operations of organizations, impairing their financial, operational, and service performance. Therefore, organizations must develop capabilities to enhance their resilience–their ability to anticipate, overcome, and transform after disruptions. The literature proposes that agility, adaptability, and alignment (AAA capabilities) enhance long-term organizational success but does not explicitly link these AAA capabilities to resilience. Motivated by conversations with senior supply chain leaders, our research explores how organizations utilize practices, behaviors, and structures to build AAA capabilities in their pursuit of resilience over different phases of disruption. We use a grounded theory approach, conducting in-depth, semi-structured interviews with supply chain executives. Our findings contribute to the supply chain resilience literature by (a) highlighting how distinct practices, behaviors, and structures support the development of distinct AAA capabilities, (b) demonstrating which AAA capabilities are most influential in enhancing resilience during specific phases of a disruption, and (c) illustrating how the AAA capabilities operate in a feedback loop to synergistically improve resilience over the lifecycle of a disruption.</p>","PeriodicalId":48090,"journal":{"name":"Journal of Business Logistics","volume":"46 1","pages":""},"PeriodicalIF":11.2,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbl.70002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Supply Chain Digitalization and Agility: How Does Firm Innovation Matter in Companies?

IF 11.2 2区管理学

Journal of Business Logistics Pub Date : 2025-01-27 DOI: 10.1111/jbl.70007

Michael Wang, Alex Hill, Yang Liu, Ki-Soon Hwang, Ming K. Lim

{"title":"Supply Chain Digitalization and Agility: How Does Firm Innovation Matter in Companies?","authors":"Michael Wang, Alex Hill, Yang Liu, Ki-Soon Hwang, Ming K. Lim","doi":"10.1111/jbl.70007","DOIUrl":"https://doi.org/10.1111/jbl.70007","url":null,"abstract":"<p>This study investigates the impact of supply chain digitalization on agility through the lens of innovation within firms. Employing a resource-based view and dynamic capabilities approach, we analyze the relationship between supply chain digitalization and agility. This exploration is essential for fostering an agile supply chain capable of addressing challenges post COVID-19. The empirical data were gathered through a survey administered in the Emirates. Factor analysis was performed to validate the measurement models and structural equation modeling techniques were employed to test the hypotheses. Further, the study analyses the mediating role of firm innovation between digitalization and supply chain agility within companies. The findings suggest that firm innovation serves as a significant mediator. Moreover, a multigroup analysis was conducted to examine the moderating effects in the research models, revealing that firm innovation plays a pivotal role in elucidating the mechanism between supply chain digitalization and agility. This study offers valuable insights into supply chain agility and resilience post COVID-19 and makes a significant contribution to the literature on supply chain digitalization.</p>","PeriodicalId":48090,"journal":{"name":"Journal of Business Logistics","volume":"46 1","pages":""},"PeriodicalIF":11.2,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbl.70007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143119783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

How Robotics is Shaping Digital Logistics and Supply Chain Management: An Ongoing Call for Research

IF 11.2 2区管理学

Journal of Business Logistics Pub Date : 2025-01-23 DOI: 10.1111/jbl.70005

R. Kelly Rainer Jr., Robert Glenn Richey Jr., Soumyadeb Chowdhury

{"title":"How Robotics is Shaping Digital Logistics and Supply Chain Management: An Ongoing Call for Research","authors":"R. Kelly Rainer Jr., Robert Glenn Richey Jr., Soumyadeb Chowdhury","doi":"10.1111/jbl.70005","DOIUrl":"https://doi.org/10.1111/jbl.70005","url":null,"abstract":"<div>\u0000 \u0000 <p>The <i>Journal of Business Logistics</i> has been the top location for publishing logistics and supply chain-related technological research for over forty years. With digital transformation, reshoring of manufacturing, labor shortages, decreasing birth rates, and aging workforces, companies are increasingly adopting artificial intelligence-supported robotics to increase the ability of supply chains to react quickly and effectively to changes in customer demand, market conditions, or disruptions. This paper analyzes the use of hardware robots across the logistics fulfillment process. The study addresses the evolution of robotic training from explicit programming to machine learning and continues with a detailed discussion of generative machine learning. We then provide an overview of key hardware robots driven by generative machine learning models that are used in the fulfillment process. The paper examines the challenges that robot adoption presents to organizations and concludes with explicit directions for further research using the Theory of Resource Orchestration.</p>\u0000 </div>","PeriodicalId":48090,"journal":{"name":"Journal of Business Logistics","volume":"46 1","pages":""},"PeriodicalIF":11.2,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143118115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Where Does Insensitivity Lie? How IT Investment Decision Practices Shape Supply Chain Efficiency

IF 11.2 2区管理学

Journal of Business Logistics Pub Date : 2025-01-09 DOI: 10.1111/jbl.70001

Randy V. Bradley, Bogdan C. Bichescu, Junwoo Cha, John E. Bell, Terry Esper, Ben Hazen

{"title":"Where Does Insensitivity Lie? How IT Investment Decision Practices Shape Supply Chain Efficiency","authors":"Randy V. Bradley, Bogdan C. Bichescu, Junwoo Cha, John E. Bell, Terry Esper, Ben Hazen","doi":"10.1111/jbl.70001","DOIUrl":"https://doi.org/10.1111/jbl.70001","url":null,"abstract":"<p>Hospitals are searching for ways to improve supply chain efficiency. Drawing on the success of supply chain digitization in other industries, hospitals have increased their efforts to digitize supply chain operations via investments in IT to address pain points associated with supply disruptions and rising costs, including supply costs that account for more than 40% of operating expenses. Prior research fails to consider how IT investment decisions are justified concerning their impact on supply chain performance when the decision-maker sits outside the supply chain function. We draw on the Practice-Based Theory to explain how IT investment decision practices affect hospital supply chain efficiency (SCE). We use matched survey responses from hospital CIOs and IT managers and secondary data to examine the direct and indirect effects of various IT investment justification practices on SCE. We also investigate the role of moderated mediation effects. Leveraging PBT, we establish a different type of organizational practice in the supply chain management and logistics literature: IT investment justification practices. We extend the PBT and empirically challenge the implicit assumption that supply chain performance is not sensitive to IT investment decisions. Further, we demonstrate which IT investment justification practice is more beneficial to supply chain efficiency.</p>","PeriodicalId":48090,"journal":{"name":"Journal of Business Logistics","volume":"46 1","pages":""},"PeriodicalIF":11.2,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbl.70001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Examining the Impact of Green Technology Application on Firm Performance: An Empirical Study Utilizing With the Meta-SEM Method

IF 11.2 2区管理学

Journal of Business Logistics Pub Date : 2024-12-31 DOI: 10.1111/jbl.70003

Weihua Liu, Yuenan Cao, Hing Kai Chan, Ming K. Lim, Ou Tang, Yang He

{"title":"Examining the Impact of Green Technology Application on Firm Performance: An Empirical Study Utilizing With the Meta-SEM Method","authors":"Weihua Liu, Yuenan Cao, Hing Kai Chan, Ming K. Lim, Ou Tang, Yang He","doi":"10.1111/jbl.70003","DOIUrl":"https://doi.org/10.1111/jbl.70003","url":null,"abstract":"<div>\u0000 \u0000 <p>With increasing resource shortages and environmental pollution, firms are increasingly relying on green technology application (GTA) to improve both environmental and financial performance. However, previous research found that the impact of GTA on both types of performance can be either positive or negative. Therefore, to understand the underlying mechanisms, we employ the meta-SEM method to explore the impact of GTA on environmental performance and financial performance, considering the natural resource-based view and socio-technical system theory. A meta-analysis is conducted to obtain the correlation matrix and establish a structural equation model to test the hypotheses. The results show that, first, it is difficult for firms to directly promote performance from GTA. GTA can only promote environmental performance through green innovation and green cooperation, and the mediating effect of green innovation is greater. Second, despite the direct negative impact of GTA on financial performance, it can promote financial performance through green innovation and the chain path. Third, internal environmental management can enhance all paths. Regarding the total effect, GTA has a significant positive impact on performance in both the environmental and financial dimensions. These results enrich extant knowledge on the relationship between GTA and firm performance.</p>\u0000 </div>","PeriodicalId":48090,"journal":{"name":"Journal of Business Logistics","volume":"46 1","pages":""},"PeriodicalIF":11.2,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143121172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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