We describe a general purpose master-worker parallel computation Python module called PyMW. PyMW provides a unified interface to multiple computation environments including multicore processors, networked clusters and the Berkeley Open Infrastructure for Network Computing (BOINC) software platform. PyMW is intended to support rapid development, testing and deployment of large scale master-worke...

This paper explores the behavior of a model economy with search frictions and bilateral asymmetric information. Firms commit to employment contracts in an effort to attract workers. When a worker and firm meet, the worker must decide whether to supply effort to the employment relationship, thereby affecting the distribution of a match-specific productivity shock. Only the worker observes her ef...

Eusocial insects exhibit a remarkable reproductive division of labor between queens and largely sterile workers [1, 2]. Recently, it was shown that queens of diverse groups of social insects employ specific, evolutionarily conserved cuticular hydrocarbons to signal their presence and inhibit worker reproduction [3]. Workers also recognize and discriminate between eggs laid by the queen and thos...

Eusocial insect societies display a remarkable reproductive division of labor between a single fertile queen and thousands of largely sterile workers. In most species, however, the workers retain the capacity to reproduce, particularly in queenless colonies where typically many workers lay eggs. As yet, the molecular determinants that initiate this shift in worker fertility are still poorly doc...