1. INTRODUCTION. It has become a truism, at least among statisticians, that while statistics is a mathematical science, it is not a subfield of mathematics. We even have apho-risms to express some ways in which our science differs from mathematics. George Box: " All models are wrong, but some are useful. " George Cobb: " In mathematics, context obscures structure. In data analysis, context prov...

A popular approach to significance testing proposes to decide whether the given hypothesized statistical model is likely to be true (or false). Statistical decision theory provides a basis for this approach by requiring every significance test to make a decision about the truth of the hypothesis/model under consideration. Unfortunately, many interesting and useful models are obviously false (th...

Payment for Performance (P4P) schemes by which physicians get a financial reward as long as they reach quality and efficiency targets provided by regulator have become increasingly popular in recent years in OECD countries (1) : in 2012, P4P program for primary care physicians were implemented in about 15 OECD countries. In the US, the number of P4P schemes has grown spectacularly, from 39 in 2...

Whistleblowing is defined by the retaliation that those who speak out receive. Why some organizations find it almost impossible not to retaliate depends more on the properties of the organization than the act of the individual whistleblower. These properties are, to greater or lesser degree, present in all organizations. Not all organizations retaliate against whistleblowers, but the whistleblo...

Background: Various methods of ART have been able help to many women to have children. Surrogacy is one of these methods that is performed in Iran like other country. According to development of this method we need to survey of all, legal, religious, moral, psychological and sociological aspects. Materials and Methods: A review of library. Results: Although in most of volunteers of Surrogacy wo...