Competition and Coordination in Online Marketplaces

Online marketplaces, such as those operated by Amazon, have seen rapid growth in recent years. These marketplaces serve as an intermediary, matching buyers with sellers, whereas control of the good is left to the seller. In some cases, e.g., the Amazon marketplace system, the firm that owns and manages the marketplace system will also sell competing products through the marketplace system. This creates a new form of channel conflict, which is a focus of this article. We consider a setting in which a marketplace firm operates an online marketplace through which retailers can sell their products directly to consumers. We consider a single retailer, who currently sells its product only through its own website, but who may choose to contract with Amazon to sell its product through the marketplace system. Selling the product through the marketplace expands the available market for the retailer, but comes at some expense, e.g., a fixed participation fee or a revenue sharing requirement. Thus, a key question for the retailer is whether she should choose to sell through the marketplace system, and if so, at what price. We analyze the optimal decisions for both the retailer and the marketplace firm and characterize the system equilibrium.     

Price and Service Competition in an Outsourced Supply Chain

We consider a buyer who outsources the manufacturing of a product to multiple symmetric make‐to‐stock suppliers who compete on price and service (fill rate). The buyer allocates demand to the suppliers using a score function with an exponential form, which specifies the relative importance of price vs. service, in order to minimize his costs, while the suppliers choose their prices and fill rates to maximize their profits. For the case of dual‐sourcing, we characterize the optimal parameter of the exponential score function, considering the impact of the buyer's decisions on the suppliers, and considering how the suppliers compete against each other to earn a portion of the buyer's demand. We prove the existence of a unique equilibrium and characterize the equilibrium behavior of the system. We then consider a general number of suppliers and show that the equilibrium prices and fill rates, and the buyer's cost, are increasing in the number of suppliers. We compare these results to a model of single‐sourcing, in which the buyer is the Stackelberg leader and extracts all profits from the supplier. We find that the buyer always prefers single‐sourcing to multisourcing. Finally, we study a centralized system and use the results to develop a coordinating contract for the decentralized system.     

Bildungspolitik durch internationale Organisationen

To what degree is education policy subordinate to international governance (PISA; Bologna)? The rise of an international education policy is a significant development, as it has led to changes in both the tasks and achievements of states. For historic reasons only few policy arenas (military, police, and court systems) are relatively closely linked to national sovereignty and autonomy. Education is a state prerogative because it both increases the economic capacity of states and serves to integrate society into national structures. Globalization is now doubly challenging to state sovereignty: first through the spread of markets for goods, services, persons, and knowledge capital; and second through transnational, partially supranational politics of international organizations. This empirical study shows how the OECD has successfully established soft governance mechanisms of coordination, opinion formation, and benchmarking. The conclusion discusses whether and how these developments will contribute to a global isomorphism of education policy.     

Why Do Men and Women Challenge Gender Discrimination in the Workplace? The Role of Group Status and In-group Identification in Predicting Pathways to Collective Action

Group status and group identification were hypothesized to moderate the predictors of collective action to challenge gender discrimination against women. Higher identifiers were expected to respond to the inequality through the lens of their in-group's interests. Among highly identified women, collective action was predicted by appraisals of illegitimacy and feelings of anger, suggesting that they felt a sense of solidarity with the victims and experienced the justice violation as personally relevant. In contrast, higher identification with the high-status group should reflect more investment in the advantaged in-group, relative to the interests of the victimized out-group members. Thus, among highly identified men, collective action intentions were predicted by perceiving the inequality as pervasive (i.e., not limited to a few cases) and feelings of sympathy for victims. This suggests that highly identified men did not experience the inequality as self-relevant until they saw it as too widespread to be ignored. In contrast, men and women with lower gender group identification demonstrated more similar pathways to collective action, where sympathy was the main predictor. Theoretical and practical implications are discussed.     

Globalisation and the ‘Internal Alchemy’ in Chinese Martial Arts:The Transmission of Taijiquan to Britain

Taijiquan (t’ai chi ch’uan) is a Chinese martial art that has grown substantially in popularity and global reach since the mid-twentieth century. Known as an ‘internal’ martial art that combines combat techniques with meditation and longevity practices, it has influenced, and been influenced by, the global dissemination of Chinese medical and therapeutic techniques. Like other martial arts, its pedagogy and techniques were changed significantly in early twentieth century China and later during the Cultural Revolution, in line with ideals of physical fitness as a tool for social reform and nation building. In the mid-twentieth century, taijiquan migrated West, becoming aligned in the 1960s and 1970s with Western interest in holistic health, Asian meditative systems and Chinese martial arts, but its martial techniques were little known until the 1980s and 1990s. British taijiquan illustrates the complex outcomes of globalisation processes, resulting in the establishment of different hybrids. There is evidence of the transmission of simplified systems promoted by the Chinese government; of innovative adaptations, developed to suit Western needs; and practices that appear to have survived suppression in mainland China, to be reconfigured in the West. These varied outcomes have been enabled by diverse channels of transmission and by colonial relationships, for example between Britain and Hong Kong, whilst the opening of mainland China in the 1980s has added further exchanges and complexities. In Britain (as in China), at the start of the twenty-first century, taijiquan is mostly practiced with therapeutic and meditative aims, and its naturalistic perspective on human well-being and ageing resonates with current debates in preventative medicine and public health. As a ‘traditional’ martial art, taijiquan has a less predictable future, which will be influenced by the degree to which it engages with the competitive sporting arena of official Chinese wushu (martial arts) and the extent to which martial arts become subject to formal regulation. The future identity of taijiquan will depend on the ways that technical and cultural control is negotiated between continents and on the interest shown by the global scientific community in the value of taijiquan for understanding health and well-being.     

Work Volition and Job Satisfaction: Examining the Role of Work Meaning and Person–Environment Fit

Building on core principles within the Psychology‐of‐Working Framework (PWF; Blustein, 2006 , 2008 ), the authors examined mediators that may explain the link between work volition and job satisfaction among employed adults (135 women, 145 men). A structural equation model was tested hypothesizing that person–environment fit and work meaning would fully mediate the work volition–job satisfaction link. Results suggested that the reason work volition related to job satisfaction was because of stronger perceived fit with one's work environment and greater perceived meaning at work. In total, the predictor variables accounted for 82% of the variance in job satisfaction. Based on these findings, clinicians are encouraged to help clients understand the unique factors that may be limiting their work volition and to specifically target barriers that are amenable to change.     

The most-cited statistical papers

We attempt to identify the 25 most-cited statistical papers, providing some brief commentary on each paper on our list. This list consists, to a great extent, of papers that are on non-parametric methods, have applications in the life sciences, or deal with the multiple comparisons problem. We also list the most-cited papers published in 1993 or later. In contrast to the overall most-cited papers, these are predominately papers on Bayesian methods and wavelets. We briefly discuss some of the issues involved in the use of citation counts.     

The Organization and Dynamics of Adolescent Conflict with Parents and Friends

In telephone interviews, 212 adolescents described all disagreements arising the preceding day that involved parents or friends. Conflicts were organized in a similar manner in both relationships: Topics, resolutions, and outcomes were linked together and were usually tied to affect afterward. The specific dynamics of conflict, however, varied in a manner that reflects differences in relationship power and stability. Relative to those with friends, parent‐child conflicts more often involved a combination of daily hassle topics, neutral or angry affect afterward, power‐assertive resolutions, and win‐lose outcomes. Relative to those with parents, friend conflicts more often involved a combination of relationship topics, friendly affect afterward, disengaged resolutions, and equal or no outcomes. Most differences in disagreement dynamics were not a function of differences in the rate at which topics of conflict arose in each relationship: Across topics, parents usually reported more coercion than friends, and friends usually reported more mitigation than parents.