We propose a decomposition of social welfare when consumers have quasi-linear utility functions under certain conditions satisfied in many models of imperfect competition. In our decomposition, social welfare is expressed as the sum of consumers’ gross utilities and trade surplus of non-numeraire commodities, which contribute to consumers’ utilities non-linearly. This decomposition is useful es...

Article history: Received 24 August 2014 Received in revised form 28 February 2015 Accepted 2 March 2015 Available online 10 March 2015 JEL classifications: C93 D01 D82 K42 PsycINFO classifications: 3120 3450 3660

Article history: Accepted 17 September 2013 JEL classifications: L13 L15

The purpose of the present investigation was to prepare an intranasal in situ gel with increased nasal residence time in order to improve bioavailability of metoprolol tartrate. The in situ gel systems containing carbopol, hydroxypropyl methylcellulose K4M and K15M in different concentrations were prepared. The samples were characterized for viscosity, rheological behavior, gelation behavior, g...

Firms need to incur substantial sunk costs to break in foreign markets, yet many give up exporting shortly after their first experience, which typically involves very small sales. Conversely, other new exporters shoot up their foreign sales and expand to new destinations. We investigate a simple theoretical mechanism that can rationalize these patterns. A firm discovers its profitability as an ...

the gravity method is one of the first geophysical techniques used in oil and gas exploration. an algorithm is developed for a fast quantitative interpretation of gravity data generated by geometrically simple but also the estimated depths and other model parameters of a buried structure. following abdelrahman et al (1989). the general gravity anomaly expression produced by a sphere, an infinit...

This paper introduces a new trade model type. It combines the gravity model, well-known in international economics, with network theory. With this approach, complicated trade networks can be algebraically solved in form of systems of linear (differential) equations. Business cycles and productivity shocks can be represented via complex numbers or the Laplace transformation. With the help of thi...

96 words Text (including References, Tables and Appendices): 13,216 words JEL classifications: I12, I31, I20, I18