We develop a model to study the implications of a legal environment on the organization of software production. We show that contract enforcement a®ects the organizational mode (i.e., in-house versus outsourcing) of customized software development while copyright protection determines the introduction of package software. When copyright protection is weak, only customized software will be devel...

Standard economic analysis holds that labor market rigidities are harmful for job creation and typically increase unemployment. But many orthodox reforms of the labor market have proved di±cult to implement because of political opposition. For these reasons it is important to explain why we observe such regulations. In this paper I outline a theory of how they may arise and why they ̄t together...

Context. Observations with the Hinode spectro-polarimeter have revealed strong horizontal internetwork magnetic fields in the quiet solar photosphere. Aims. We aim at interpreting the observations by means of results from numerical simulations. Methods. Radiative MHD simulations of dynamo action by near-surface convection are analyzed with respect to the relation between vertical and horizontal...

A necessary condition for justifying a policy such as subsidized low-income housing, either via tenant-based rental assistance or construction of public or private projects, is that it has a real effect on market outcomes. In this paper, we examine one aspect of the real effect of subsidized housing – does it increase the housing stock? If subsidized housing raises the quantity of occupied hous...

To explain the low-frequency variation in US equity and debt returns in the 20th century, we solve an equilibrium model in which households face housing collateral constraints. An increase in the ratio of housing to human wealth loosens these borrowing constraints, thus allowing for more risk sharing. The rate of return that households require for holding equity decreases as a result. Feeding t...

Over the past decade, housing costs have risen faster than incomes. The need for affordable rental housing has well outpaced the number of available units as well as funding allocations at the federal level. Local regulation and land use policies that increase the cost of subsidized, mixed-income housing construction and preservation have contributed to the affordability problem. To meet the af...