In the present communication, we have studied different variations in the entropy measures in the different states of queueing processes. In case of steady state queuing process, it has been shown that as the arrival rate increases, the uncertainty increases whereas in the case of non-steady birth-death process, it is shown that the uncertainty varies differently. In this pattern, it first incr...

Within a two-sector-two-country model of trade with aggregate scale economies and unionisation, a move to a more generous welfare state in one country increases welfare in that country and can have positive spill-over effects on the other. Furthermore, synchronised expansions of social security are more welfare enhancing than unilateral ones. Our results counter the fears that a race to the bot...

Article history: Received 8 September 2007 Received in revised form 9 April 2008 Accepted 17 July 2008 Available online 7 August 2008 A random-matching model with a clearinghouse is constructed to investigate the impact of privatemoney on economic efficiency and social welfare in threemonetary regimes. A subset of agents, called bankers, whose credit histories are recorded by the clearinghouse,...

We introduce heterogeneous preferences into a tractablemodel ofmonetary search to generate price dispersion, and then examine the effects of money growth on price dispersion and welfare. With buyers’ search intensity fixed, we find that money growth increases the range of (real) prices and lowers welfare as agents shift more of their consumption to less desirable goods.When buyers’search intens...

Within a two-sector-two-country model of trade with aggregate scale economies and unionisation, a more generous welfare state in one country increases welfare in that country and can have positive spillover effects on the other. Furthermore, synchronised expansions of social security are more welfare enhancing than unilateral ones. Our results counter the fears that a race to the bottom in soci...

The methodology for the scientific assessment of animal welfare has developed rapidly in recent years and has become a major scientific discipline. The concepts of welfare, need, stress, health, pain, emotion and feeling are now clarified. In teaching, legislation and practical work referring to animal welfare, a clear definition that can be related to other concepts is needed. The welfare of a...

I study the social value of information in a New Keynesian model of monopolistic pricesetting with dispersed information, where the central bank can choose what information to share with the public. Under flexible prices, more disclosure is welfare improving: it reduces price dispersion and moves the economy closer to the first-best allocation. Under Calvo [1983] price stickiness, however, disc...

a quantum theory of a two and three-level laser with injected atomic coherence is developed by using a density operator method, to the best of our knowledge, for the first time. the initial atomic coherence plays an essential role. at steady state, the equation of motion for the density operator yields to exhibit laser without inversion and a phase locking but no threshold for the laser field. ...

one of the difficulties in using absolute altitudes is the separation between the mean open sealevel and geoid. theoretically, geoid is the base level in absolute altitudes, but practically, the mean open sealevel is used as a base level for absolute altitudes. the difference between these two levels is called as the seasurface topography. in this research, it is dealt the mean sea level modeli...