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作者：Batt, Robert J.; Terwiesch, Christian
作者单位：University of Wisconsin System; University of Wisconsin Madison; University of Pennsylvania; University of Pennsylvania
摘要：We study a multistage service process that adapts to system occupancy level. Using operational data from more than 140,000 patient visits to a hospital emergency department, we show that the system-level performance of the emergency department is an aggregation of several simultaneous server-level workload response mechanisms. We identify early task initiation as a between-stage adaptive response mechanism that occurs when an upstream stage initiates tasks that are normally handled by a downst...
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作者：Blancom, Mariana; Dalton, Patricio S.; Vargas, Juan F.
作者单位：Universidad del Rosario; Tilburg University; Tilburg University
摘要：This paper studies the effects of unemployment benefit schemes on individual productivity. We created employment and unemployment in the field and compared workers' productivity under no unemployment benefits to productivity under two different unemployment schemes. In one scheme, the unemployed received an unconditional monetary transfer. In the other, the monetary transfer was obtained conditional on the unemployed spending some time on an ancillary activity. Our results challenge the standa...
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作者：Gans, Joshua
作者单位：University of Toronto
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作者：Freeman, Michael; Savva, Nicos; Scholtes, Stefan
作者单位：University of Cambridge; University of London; London Business School
摘要：We use a detailed operational and clinical data set from a maternity hospital to investigate how workload affects decisions in gatekeeper-provider systems, where the servers act as gatekeepers to specialists but may also attempt to serve customers themselves, albeit with a probability of success that is decreasing in the complexity of the customers' needs. We study the effect of workload during a service episode on gatekeepers' service configuration decisions and the rate at which gatekeepers ...
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作者：Yang, Luyi; Debo, Laurens; Gupta, Varun
作者单位：University of Chicago; Dartmouth College
摘要：The first in, first out (FIFO) queue discipline respects the order of arrivals, but is not efficient when customers have heterogeneous waiting costs. Priority queues, in which customers with higher waiting costs are served first, are more efficient but usually involve undesirable queue-jumping behaviors that violate bumped customers' property rights over their waiting spots. To have the best of both worlds, we propose time-trading mechanisms, in which customers who are privately informed about...
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作者：Helwege, Jean; Huang, Jing-Zhi; Wang, Yuan
作者单位：University of California System; University of California Riverside; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Concordia University - Canada
摘要：This paper investigates the impact of debt covenant protection on the cross section of equity returns with a firm-level covenant index and four subindices. We find that firms withweaker covenant protection ( lower covenant index levels) earn significantly higher risk-adjusted equity returns than do those firms with greater covenant protection. These results are stronger for covenant indices that are related to investments, subsequent financing, and event risk. The difference between high and l...
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作者：Kecskes, Ambrus; Michaely, Roni; Womack, Kent L.
作者单位：York University - Canada; Cornell University; University of Toronto
摘要：Sell-side analysts change their stock recommendations when their valuations differ from the market's. These valuation differences can arise from either differences in earnings estimates or the nonearnings components of valuation methodologies. We find that recommendation changes motivated by earnings estimate revisions have a greater initial price reaction than the same recommendation changes without earnings estimate revisions: about +1.3% (2.8%) greater for upgrades (downgrades). Nevertheles...
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作者：Li, Zhepeng; Fang, Xiao; Bai, Xue; Sheng, Olivia R. Liu
作者单位：York University - Canada; University of Delaware; University of Connecticut; Utah System of Higher Education; University of Utah
摘要：Link recommendation, which suggests links to connect currently unlinked users, is a key functionality offered by major online social networks. Salient examples of link recommendation include People You May Know on Facebook and LinkedIn as well as You May Know on Google+. The main stakeholders of an online social network include users (e.g., Facebook users) who use the network to socialize with other users and an operator (e.g., Facebook Inc.) that establishes and operates the network for its o...
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作者：Chhaochharia, Vidhi; Grinstein, Yaniv; Grullon, Gustavo; Michaely, Roni
作者单位：University of Miami; Reichman University; Cornell University; Rice University; Cornell University
摘要：We use the Sarbanes-Oxley Act of 2002 (SOX) as a quasi-natural experiment to examine the link between product market competition and internal governance mechanisms. Consistent with the notion that competition plays an important role in aligning incentives within the firm, SOX has led to a larger improvement in the operation of firms in concentrated industries than in nonconcentrated industries. Furthermore, within concentrated industries, the effect is especially pronounced among firms with we...
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作者：Distelhorst, Greg; Hainmueller, Jens; Locke, Richard M.
作者单位：University of Oxford; Stanford University; Stanford University; Brown University; Brown University
摘要：This study tests the hypothesis that lean manufacturing improves the social performance of manufacturers in emerging markets. We analyze an intervention by Nike, Inc., to promote the adoption of lean manufacturing in its apparel supply chain across 11 developing countries. Using difference-in-differences estimates from a panel of more than 300 factories, we find that lean adoption was associated with a 15 percentage point reduction in noncompliance with labor standards that primarily reflect f...
