one of the common problems in reflective seismic records is the existence of coherent linear and random noises which cause covering of the most important parts of reflective signals; therefore, it is necessary to attenuate them by processing methods. several processing techniques have been devised for attenuation of coherent linear noises and linear radon or ?-? transform is a powerful techniqu...

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.

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...

With the end of the Supermarket Revolution in the 1970s, new forms of horizontal, vertical, and geographic competition have appeared to chaflenge the supremacy of the supermarket format. New retail formats like warehouse stores, supercenters, and fast-food outlets appear to affect local retail supermarket prices. Slotting allowances, coupons, and electronic data gathering have intensified retai...

We consider whether Sub-Saharan African (SSA) countries are mainly poor because they are governed worse than other countries, as suggested by recent studies on the supremacy of institutions. Our empirical results show that the supremacy of institutions does not hold. SSA countries appear to face specific development problems in addition to weak institutions. Given their geographic and economic ...

As the global financial crisis dethrones the developed world from its economic supremacy, by leading the global economic recovery and growth, the global growth generator (3G) countries are expected to fill the vacuum. Capital market i.e. stock market development can play a crucial role in augmenting such growth in these 3G countries. This study aims at augmenting the determinants of stock marke...

Pranab Bardhan ([email protected]) is with the Department of Economics, University of California, Berkeley, US. Sandip Mitra ([email protected]) is with the Economic Research Unit, Indian Statistical Institute, Kolkata. Dilip Mookherjee ([email protected]) is with the Department of Economics, Boston University, Boston, US and Abhirup Sarkar ([email protected]) is with the Economic Rese...