the dynamism of the verity proposition has led to its being used in various issues and sciences as the founder for the general and constant principles. the principles of jurisprudence, as a science that is the founder for general rules to arrive at legal rulings, utilizes this proposition in many subdivisions of uṣūl (principles) as well as in resolving problems. in fact, if we do not take the ...

Between the years 2007 and 2013, we will witness a radical change in Poland’s social and economic systems. After the breakthrough we saw in the years 1989 -1990, these new changes will be particularly significant. It has been expected, negotiated and it become a fact. On the turn of the year 2007, Poland will be recognized as a proper and rightful EU member. Rightful, because it fully takes ove...

Research has overwhelmingly supported the proposition that safe injection facilities (SIFs) are successful in meeting their stated objectives. However, the methodological and analytic approaches used in these studies have not been scrutinized to any significant degree. Previous studies are compromised by an array of deficiencies, including a lack of baseline data, insufficient conceptual and op...

This appendix provides the formal proof of Proposition 1, an analytic calculation showing that indivisible x-goods are not essential for our main results, and a numerical example showing that our results can also be obtained in a random coefficients discrete choice demand system like that of Berry, Levinsohn and Pakes (1995), commonly used in the industrial organization literature. The appendix...