This study aimed to check for any significant differences in perceived quality of life, specifically aspects of a physical nature, among volunteers who are more physically active and those less physically active in a university community. The sample consisted of 1,966 volunteers in a university community in Brazil. To assess physical activity levels, volunteers responded to the International Ph...

Individual differences in adolescent exercise behavior are to a large extent explained by shared environmental factors. The aim of this study was to explore to what extent this shared environment represents effects of cultural transmission of parents to their offspring, generation specific environmental effects or assortative mating. Survey data on leisure-time exercise behavior were available ...

This section provides theoretical support for the strategy outlined in §2.2. For convenience, to ease the presentation of the case in which auctioneer a’s reservation price is not met, we imagine there arema+1 “reservation” dedicated bidders installed in auction a at the market’s outset, where each such bidder’s valuation equals auctioneer a’s reservation price. Thus in this section of the appe...

In this article we present several logical schemes. The scheme SubrelstrEx deals with a non empty relational structure A , a set B, and a unary predicate P , and states that: There exists a non empty full strict relational substructure S of A such that for every element x of A holds x is an element of S if and only if P [x] provided the following conditions are met: • P [B], and • B ∈ the carri...

Should multi-unit auctions be used to sell multiple identical and indivisible units? In this paper we show that with sufficiently many bidders, the multi-unit format is more efficient than the bundle format in a broad range of situations. However, the revenueperformance depends on the fraction of demand that is met asymptotically. We also examine the absolute performance of the multi-unit aucti...

BACKGROUND A sedentary lifestyle remains a major threat to health in contemporary societies. To get more insight in the relative contribution of genetic and environmental influences on individual differences in exercise participation, twin samples from seven countries participating in the GenomEUtwin project were used. METHODOLOGY Self-reported data on leisure time exercise behavior from Aust...

The challenges of the marketplace are met by product developers in two ways: development of innovative products and reducing product costs. Cost reduction alone is not a substitute for innovation. Cost-oriented product development is systematical engineering work, which requires an interdisciplinary approach, and needs to be efficient and effective. The costs that are of interest here are those...

It is shown that, for the spectral operators of scalar type, the well-known characterizations of the generation of C0and analytic semigroups of bounded linear operators can be reformulated exclusively in terms of the spectrum of such operators, the conditions on the resolvent of the generator being automatically met and the corresponding semigroup being that of the exponentials of the operator.

OBJECTIVES To show that a Local Research Ethics Committee (LREC) can carry out an audit of ethical standards in research. To find out if a researcher met certain ethical standards in recruiting subjects for clinical trials and in obtaining their consent. DESIGN Postal questionnaire. SETTING Clinical research by one doctor during one year. SUBJECTS Eleven patients entered in clinical trial...