星巴克的咖啡新体验

新媒体--微博，电子商务为星巴克带来全新的营销模式。     

Wage posting without full commitment

Wage posting models of job search typically assume that firms can commit to paying workers exactly the posted wage. We relax this assumption and impose “downward” commitment; firms can commit only to paying at least their advertised wage. As each firm can only commit to pay at least their advertised wage, workers may demand that the firm pay more than the advertised wage. In labor markets with a finite number of workers and firms, the strategic interaction between firms makes it costly for firms to provide applicants the incentive not to demand wages in excess of the advertised wage. In equilibrium, firms may settle for running job auctions at the cost of losing control of the number of applicants that they can attract. When this strategic interaction between firms vanishes, workers never choose to demand more than the advertised wage.     

Corruption and International Trade: An Empirical Investigation of African Countries

This paper attempts to estimate the effect of corruption on the flows of exports and imports of African countries. Using the gravity model approach and annual data for the period 1998–2007, we obtain negative and statistically significant correlations between the values of exports and imports and the levels of corruption in Africa and trading partners. Thus the results support the view that corruption adversely affects international trade. Our estimates suggest that if a country with Africa’s average corruption perception index of 2.8 were to improve its corruption level to Botswana’s 5.9, its exports would improve by about 15 per cent and imports by about 27 per cent.     

Payout policy,financial flexibility,and agency costs of free cash flow

This paper explains how firms choose between dividends and open-market repurchase programs, the prevailing method that firms use to disburse cash today. While earlier theories about payout policy are motivated by signaling, the motivation for payout in this paper is to prevent the waste of free cash by self-interested insiders. In the model, dividends prevent free cash waste by forcing cash out, but result in underinvestment if the cash paid out is later needed for operations. Open-market programs stimulate payout by providing personal gains to informed insiders that are associated with the firm's repurchase trade. Yet, they also avoid the underinvestment problem by leaving insiders the option to cancel the payout. Because their execution is optional, however, open-market programs only partially prevent the waste of free cash. The model provides testable predictions that are generally consistent with the empirical evidence.     

THE WAR ON DRUGS 2.0: DARKNET FENTANYL'S RISE AND THE EFFECTS OF REGULATORY AND LAW ENFORCEMENT ACTION

U.S. overdose deaths attributed to synthetic opioids, such as fentanyl, have increased from under 3,000 in 2013 to nearly 20,000 in 2016, making up half of all opioid‐related overdose deaths. Using web scrapes of darknet markets from 2014 to 2016, I provide historical prices for fentanyl and its most popular analogues and find that fentanyl vendors priced fentanyl in 2014 at a 90% discount compared to an equivalent dose of heroin. Using regression discontinuity, I evaluate the effects of two major law enforcement and regulatory events. I find minimal lasting effects of U.S. legal actions intended to disrupt darknet markets, but there are statistically significant indications of a price increase corresponding with regulatory action in China. Despite these indications of some regulatory success, fentanyl prices remained approximately 90% cheaper than heroin. (JEL I18, K42)     

Damaging democracy? Security provision and turnout in Afghan elections†

In emerging democracies, elections are encouraged as a route to democratization. However, not only does violence often threaten these elections, but citizens often view as corrupt the security forces deployed to combat violence. We examine the effects of such security provision. In Afghanistan's 2010 parliamentary election, polling centers with similar histories of pre‐election violence unintentionally received different deployments of the Afghan National Police, enabling identification of police's effects on turnout. Using data from the universe of polling sites and various household surveys, data usually unavailable in conflict settings, we estimate increases in police presence decreased voter turnout by an average of 30%. Our results adjudicate between competing theoretical mechanisms through which security forces could affect turnout, and show behavior is not driven by voter anticipation of election‐day violence. This highlights a pitfall for building government legitimacy via elections in weakly institutionalized and conflict‐affected states.     

Auditor benchmarking of client disclosures

Review of Accounting Studies - We examine auditors’ disclosure benchmarking, which we define as auditors’ acquisition of nonclient financial statement information for the purpose of...     

A goal-oriented pharmaceutical research and development organization: an eleven-year experience

Pharmaceutical R & D effort is multidisciplinary and matrix in management form, but variable in organizational detail. Upjohn's discipline-oriented organization (coordination matrix) of 11 years ago is compared to its current organization consisting of a goal-oriented, leadership matrix and a simultaneously existing coordination matrix. Product development success and individual performances were similar for the concurrent coordination matrix and leadership matrix. Consensus on candidate product identification and execution of development plans is easier with a leadership matrix than with a coordination matrix, but flexible response to new or changing goals seems more likely with a coordination matrix. The location of candidate product advocacy differed in the two types of organization. Strategies effected over the 11-year period to overcome inherent limitations of goal-oriented organizations and functional organizations included the maintenance of competing yet synergistic, functional, and goal-oriented organizations, a strong publication and basic research policy, and a Troika' approach to candidate selection and development in the functional organization.     

Valuation of tax expense

As tax expense reflects value lost to taxes paid, it should be negatively associated with value, provided nontax, value-relevant information is controlled for. However, valuation regressions estimated in prior research—using contemporaneous tax expense and nontax variables—document substantial variation in the coefficients on tax expense, ranging from significant negative to significant positive values. We show this variation is (a) caused by the omission of expected future profitability, and (b) explained by many factors that cause variation in the correlations among included variables and omitted future profitability. Unfortunately, difficulties associated with separating the impact of individual factors hampers tax research investigating determinants of the value relevance of tax expense.