The debate on the organization modes has begun by discussing the nature of markets and hierarchies. Adding further perspectives to somewhat outdated economic views of organization, it was then made clear that network forms of organizations should be considered as a third type of coordination mode. As a result of this work, it is now commonly accepted that the dichotomous view of economic organi...

Certain properties of the network of departure Ns and the padding network NP of an (n + I&node resistive n-port network containing no negative conductances are established. Based on these properiies, some necessary conditions and a sufficient condition for the realizability of the Y matrices of (n + 2J-node resistive n-port nehvorks ore obtained. A new proof for the supremacy condition is given...

We raise the problem of the minorities' survival in the presence of positive network externalities. We rely on the example of thematic clubs to illustrate why and in which circumstances such survival problems might appear, …rst considering the case of simple network externalities and then the case of cross network externalities. Sonnac and Skerdilajda Zanaj for their comments and suggestions.

Cancer cells rapidly evolve a multitude of defense mechanisms to evade the effects of the oncologist's drug arsenal. Unfortunately, clinical strategies to overcome these lag far behind. This mismatch likely underlies our inability to implement new durable treatment strategies. Here, a new form of multidrug resistance, inducible drug glucuronidation, is discussed. This form was discovered while ...

THEODORE J. WEIMAN On July 22, 2004, the House of Representatives passed the Marriage Protection Act of 2004, a bill that would strip the federal courts of jurisdiction over cases challenging the constitutionality of the 1996 Defense of Marriage Act. Two months later, the House passed a similar bill that would curtail federal court jurisdiction for challenges to the constitutionality of the Ple...