Your use of the JSTOR archive indicates your acceptance of JSTOR's Terms and Conditions of Use, available at http://www.jstor.org/page/info/about/policies/terms.jsp. JSTOR's Terms and Conditions of Use provides, in part, that unless you have obtained prior permission, you may not download an entire issue of a journal or multiple copies of articles, and you may use content in the JSTOR archive o...

i

Gametogenesis is a sexually dimorphic process requiring profound differences in germ cell differentiation between the sexes. In mammals, the presence of heteromorphic sex chromosomes in males creates additional sex-specific challenges, including incomplete X and Y pairing during meiotic prophase. This triggers formation of a heterochromatin domain, the XY body. The XY body disassembles after pr...

Hallmarks of Yersinia pathogenesis include the ability to form biofilms on surfaces, the ability to establish close contact with eukaryotic target cells and the ability to hijack eukaryotic cell signaling and take over control of strategic cellular processes. Many of these virulence traits are already well-described. However, of equal importance is knowledge of both confined and global regulato...

In this paper we analyze the economic effects of implementing EPA’s newly proposed regulations for carbon dioxide (CO2) on existing U.S. coal-fired power plants using nonparametric methods on a sample of 144 electricity generating units. Moreover, we develop an approach for evaluating the economic gains from averaging emission intensities among the utilities’ generating units, compared to imple...

We study the optimal emission standards under uncertain pollution damages and transaction costs associated with policy changes in a dynamic setting. We consider three alternative forms of transactions costs and show that they can lead to different kinds of delays of policy changes or smaller scales of these changes. Thus, policy persistence can be a rational response of forward-looking policy m...

This symposium will present the results of our joint research effort. These reports will deal with the effects of both chemical and physical factors in the environment as they interact with organisms through a variety of pathways and produce a mul-tiplicity of biological effects. However diverse these studies appear to be, they all have one common objective: to produce experimental data which w...

Any organism is embedded in an environment that changes over time. The timescale for and statistics of environmental change, the precision with which the organism can detect its environment, and the costs and benefits of particular protein expression levels all will affect the suitability of different strategies--such as constitutive expression or graded response--for regulating protein levels ...

This paper provides a brief summary of the theory and the reality of economic-incentive approaches to environmental regulation. The paper begins with a derivation of the necessary and sufficient condition for a policy instrument to be cost effective, namely that the instrument induces all sources to abate emissions at the same marginal cost. Subsequent sections introduce economic-incentive poli...

We study the optimal emission standards under uncertain pollution damages and transaction costs associated with policy changes. We show that in many situations, the authority should avoid or reduce the scale of a policy change in the presence of future transaction costs. Then policy persistence is a rational response of forward-looking policy makers to future transaction costs, rather than a pa...