â  tribes settlement focuses is as a development approach for tribes society. in this paper have been considered the main problems of tribes focuses. three focuses of biggest tribes involving bakhtiary and ghashghai were selected. the methodology of this paper is complex containing field study and analytical methods. according to the results, the main problems of tribes settlement are: support ...

In this paper, we describe the outline and the current progress of our project called ”Collection and Integration of Concept Systems (CICS)” that aims to support development of semantics in the Internet. Since semantics is not always changing, providing fixed ontologies is not stuffiest. Our project aims to support dynamics of semantics by collecting and integrating various concept systems like...

Using transnational terrorism data from 1980 to 2000, this study empirically examines the relationships between frequency of participation in transnational terrorism acts and economic development and education improvement. We find an inverse U-shaped association between the frequency of various nationals acting as perpetrators in transnational terrorism acts and per capita income in their respe...

One typically observes differing trends in the distribution of gross incomes across countries. Where do these inequalities originate from? We consider a simple model where individuals have identical preferences but different abilities, and we investigate the impact on the distribution of gross income of changes in the way abilities are distributed among the individuals. Journal of Economic Lite...

We use a firm-CEO assignment framework to model the market for CEO effective labor. In the model’s equilibrium more talented CEOs match with and supply more effort to larger firms. Taxation of CEO incomes affects the equilibrium pricing of CEO effective labor and, hence, spills over and affects firm profits. Absent the ability to tax profits or a direct concern for firm owners, a standard presc...

This paper analyzes the effects of government debt and income taxes on consumption and saving in a world of infinitely lived households having uncertain and heterogeneous incomes. The special structure of the model allows exact aggregation across households despite incomplete markets. The effects of government debt are shown to be substantial, roughly comparable to those resulting from finite h...

[Purpose] This paper attempted to determine the relationship between physical activity of men from Wrocław and their discretionary income. [Subjects and Methods] The subjects were 1,601 male survey respondents aged from 18 to 65 years old. The International Physical Activity Questionnaire was used for the assessment of physical activity. [Results] Among respondents, low intensity physical activ...

We analyze the taxation of top personal incomes in Germany on the basis of an integrated data file of individual tax returns and a general household survey for the years 1992 2002. The unique feature of this integrated data set is that it includes all taxpayers in the top percentile of the gross income distribution. We show that despite substantial tax base erosion and significant reductions of...

We analyze the taxation of top personal incomes in Germany on the basis of an integrated data file of individual tax returns and a general household survey for the years 1992 – 2002 which includes all taxpayers in the top percentile of the gross income distribution. We show that the distribution of the tax burden is highly concentrated, and that German income taxation has remained effectively p...