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        • 关于我们
        • 港大经管学院是一所扎根亚洲、面向国际的顶尖商学院。

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学术论文

主页 研究 思维领导 学术论文
pub_202008_fina_jz
Disguised Corruption: Evidence from Consumer Credit in China
Dr. Jian ZHANG
Using a comprehensive sample of credit card data from a leading Chinese bank, we show that government bureaucrats receive 16% higher credit lines than non-bureaucrats with similar income and demographics, but their accounts experience a significantly higher likelihood of delinquency and debt forgiveness. Regions associated with greater credit provision to bureaucrats open more branches and receive more deposits from the local government. After staggered corruption crackdowns of provincial-level political officials, the new credit cards originated to bureaucrats in exposed regions do not enjoy a credit line premium, and bureaucrats’ delinquency and reinstatement rates are similar to those of non-bureaucrats.
August 2020
Journal of Financial Economics

External Link
pub_202008_iimt_hs
为客户服务中心计算客户耐性的危机率
Prof. Haipeng SHEN
以时间为单位量度客户的耐性并计算危机率,已成为运营管理中重要的一环。这项技术能帮助企业优化客户服务中心的运作,如人手分配及编更事宜等等。当客户申请服务时,他们的耐性将会随时间推移产生改变。现行的数据收集系统有时候无法观察到客户服务中心提供服务的确切时间,故此我们开发了一个TunT(Transform-unTransform)的估计程式,把这个复杂的难题简化为回归分析的问题。我们为客户服务中心不同的服务时间进行分类,并使用均值匹配转换,对相关的数据进行转换,从而使我们能简单地表现出异方差-变异数函数。然后我们把非参数回归分析的技术应用在转换后的数据上。最后,我们会对估计出来的回归函数进行转换,计算出原始危机率。在我们的模拟计算中,我们利用客户服务中心的数据(实验组)与医疗保险计划中的数据(控制组)进行对比。研究证明,与现行方法相比,我们的模型能得出更准确的危机估计值,帮助企业优化人手安排。
August 2020
IISE Transactions

External Link
pub_202007_iimt_wz
Distribution Channel Choice and Divisional Conflict in Remanufacturing Operations
Prof. Zhixi WAN
We consider a firm consisting of two divisions, one responsible for designing and manufacturing new products and the other responsible for remanufacturing operations. The firm will sell these new and remanufactured products either directly to the consumer (direct selling) or through an independent retailer (indirect selling). Our study demonstrates that a firm’s organizational structure can affect its marketing decisions. Specifically, a decentralized firm with separate manufacturing and remanufacturing divisions can benefit from indirect selling with higher firm profit, supply chain profit, and total consumer demand than direct selling. Moreover, this structure also induces a remanufacturable product design. In contrast, a centralized firm in which the manufacturing and remanufacturing divisions are consolidated is intuitively better off by choosing direct selling than indirect selling. Furthermore, we show that, surprisingly, when the focal firm sells through an independent retailer, a decentralized internal structure can result in higher supply chain profit than a centralized internal structure. We further investigate the case of dual dedicated channels and conclude that, while direct selling of remanufactured products and indirect selling of new products can better induce a remanufacturable product design and higher supply chain profit, it is not in the best interest of the firm in terms of total sales and firm profit.
July 2020
Production and Operations Management

External Link
pub_202007_fina_tl
Costly Auction Entry, Royalty Payments, and the Optimality of Asymmetric Designs
Prof. Tingjun LIU
We analyze optimal auction mechanisms when bidders base costly entry decisions on their valuations, and bidders pay with a fixed royalty rate plus cash. With sufficient valuation uncertainty relative to entry costs, the optimal mechanism features asymmetry so that bidders enter with strictly positive but different (ex-ante) probabilities. When bidders are ex-ante identical, higher royalty rates—which tie payments more closely to bidder valuations—increase the optimal degree of asymmetry in auction design, further raising revenues. When bidders differ ex-ante in entry costs, the seller favors the low cost entrant; whereas when bidders have different valuation distributions, the seller favors the weaker bidder if entry costs are low, but not if they are high. Higher royalty rates cause the seller to favor the weaker bidder by less, and the strong bidder by more.
July 2020
Journal of Economic Theory

External Link
pub_202007_fina_cl
Political Investment Cycles of State-Owned Enterprises
Prof. Chen LIN
Using a large panel of more than 140,000 state-owned enterprises (SOEs), this study examines SOEs’ investment behavior surrounding 82 national elections in 25 European countries between 2001 and 2015. We find that SOEs increase their corporate investment by about 29% of the sample average during national election years. This effect is more pronounced in fixed timing and closely contested elections. The effect is also stronger in countries with low institutional quality, more centralized political systems, and state-controlled banking systems. In contrast, we find the matched non-SOEs significantly decrease their corporate investment during national election years.
July 2020
The Review of Financial Studies

External Link
pub_202007_mktg_wz
The Faces of Success: Beauty and Ugliness Premiums in e-Commerce Platforms
Ms. Wanyi ZHENG
Given the positive bias toward attractive people in society, online sellers are justifiably apprehensive about perceptions of their profile pictures. Although the existing literature emphasizes the “beauty premium” and the “ugliness penalty,” the current studies of seller profile pictures on customer-to-customer e-commerce platforms find a U-shaped relationship between facial attractiveness and product sales (i.e., both beauty and ugliness premiums and, thus, a “plainness penalty”). By analyzing two large data sets, the authors find that both attractive and unattractive people sell significantly more than plain-looking people. Two online experiments reveal that attractive sellers enjoy greater source credibility due to perceived sociability and competence, whereas unattractive sellers are considered more believable on the basis of their perceived competence. While a beauty premium is apparent for appearance-relevant products, an ugliness premium is more pronounced for expertise-relevant products and for female consumers evaluating male sellers. These findings highlight the influence of facial appearance as a key vehicle for impression formation in online platforms and its complex effects in e-commerce and marketing.
July 2020
Journal of Marketing

External Link
pub_202006_iimt_hs
Functional Censored Quantile Regression
Prof. Haipeng SHEN
We propose a functional censored quantile regression model to describe the time-varying relationship between time-to-event outcomes and corresponding functional covariates. The time-varying effect is modeled as an unspecified function that is approximated via B-splines. A generalized approximate cross-validation method is developed to select the number of knots by minimizing the expected loss. We establish asymptotic properties of the method and the knot selection procedure. Furthermore, we conduct extensive simulation studies to evaluate the finite sample performance of our method. Finally, we analyze the functional relationship between ambulatory blood pressure trajectories and clinical outcome in stroke patients. The results reinforce the importance of the morning blood pressure surge phenomenon, whose effect has caught attention but remains controversial in the medical literature. Supplementary materials for this article are available online.
June 2020
Journal of the American Statistical Association

External Link
pub_202006_fina_hz
Do Financial Regulations Shape the Functioning of Financial Institutions’ Risk Management in Asset-Backed Securities Investment?
Prof. Hong ZOU
We show that installing stronger risk management into financial institutions—a proposal widely discussed following the 2008 financial crisis—is insufficient to constrain institutions’ exposure to investment with lurking risk, such as asset-backed securities (ABS). Regulations affect the functioning of risk management: risk management constrains institutions’ exposure to risky ABS when they face mark-to-market reporting combined with capital requirements; however, this role is considerably weaker when capital requirements are combined with historical cost accounting. We find suggestive evidence that financial regulations affect risk management functions through promoting risk managers’ efforts in uncovering ABS risk and curbing executives’ incentives to take excessive risk.
June 2020
The Review of Financial Studies

External Link
pub_202006_mktg_by
Engaging Customer Cocreation in New Product Development Through Foreign Subsidiaries: Influences of Multinational Corporations’ Global Integration and Local Adaptation Mechanisms
Prof. Bennett Chi Kin YIM
Efforts to engage customers in cocreating new products have garnered much research attention from studies documenting customer cocreation’s (CC’s) positive impact on firm innovation and performance. Less research, however, has counterbalanced the bright side with the potential dark side of CC, especially as a strategy for multinational corporations (MNCs) operating in foreign markets. This study examines how MNC subsidiaries’ CC affects new product innovativeness and knowledge leakage to competitors. Adopting a broader agency perspective to recognize that subsidiaries often do not perform up to headquarters’ expectations due to both self-serving opportunism and honest incompetence, this study explores how CC effects are contingent on MNCs’ global management mechanisms. Using a dyadic managerial survey of 238 MNC subsidiaries, the authors find that MNCs can control knowledge leakage by implementing proper global integration and local adaptation mechanisms. However, CC may not improve new product innovativeness, except when the subsidiary has low local research-and-development staff influence. This study contributes to the CC literature by showing its benefits, challenges, and boundary conditions as a growing MNC innovation strategy.
June 2020
Journal of International Marketing

External Link
pub_202006_mgst_kz
The Origins of Trust Asymmetry in International Relationships: An Institutional View
Prof. Kevin Zheng ZHOU
Trust is key to relationship marketing. Although trust is bilateral, studies on the dispersion of trust among exchange parties remain limited, leaving the antecedents and outcomes of trust asymmetry largely underexplored. To fill the gaps, this study empirically examines the effects of different types of trust asymmetry on exchange performance and then investigates the institutional origins of trust asymmetry in international interfirm exchanges. Drawing on a survey of 134 international buyer–supplier relationships in China, the study finds that both calculative trust asymmetry and relational trust asymmetry have negative influences on exchange performance. The study also finds that formal institutional distance constrains calculative trust asymmetry and informal institutional distance increases relational trust asymmetry. Moreover, prior interactions and expectations of continuity significantly moderate the effects of formal and informal institutional distance. This study advances trust studies in cross-border settings.
June 2020
Journal of International Marketing

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