A popular perception is that immigration causes higher crime rates. Yet, historical and contemporary research finds that at the individual level, immigrants are not more inclined to commit crime than the native born. Knowledge of the macro-level relationship between immigration and crime, however, is characterized by important gaps. Most notably, despite the fact that immigration is a macro-lev...

This paper reviews the empirical evidence on the consequences of the introduction of Seguro Popular, a program designed to provide affordable health services to almost 50 million people uninsured by Social Security in Mexico. The evidence so far shows that Seguro Popular has been a very effective tool in reducing catastrophic health expenditures for Mexican families. However, the literature has...

Spice is a smoking mixture containing synthetic cannabinoids with psychoactive effects similar to herbal cannabis. It is sold on the Internet and has become popular among young people. The purpose of the present study was to investigate experiences of intoxication induced by Spice, as described on a Swedish internet-based discussion forum. A systematic search yielded 40 reports, which were anal...

A popular tradition of studying semantic representation has been driven by the assumption that word meaning can be learned from the linguistic environment, despite ample evidence suggesting that language is grounded in perception and action. In this paper we present a comparative study of models that represent word meaning based on linguistic and perceptual data. Linguistic information is appro...

On the basis of current evidence derived from neurocognitive research, it is possible to mediate two alternative theories concerning the relationship between perception and esthetic appreciation, in particular by distinguishing between high-quality images and popular.

Suppose that each member of a set of agents has a preference list of a subset of houses, possibly involving ties, and each agent and house has their capacity denoting the maximum number of houses/agents (respectively) that can be matched to him/her/it. We want to find a matching M , called popular, for which there is no other matching M ′ such that more agents prefer M ′ to M than M to M ′, sub...

It's not surprisingly when entering this site to get the book. One of the popular books now is the tactile perception of textiles in a virtual reality system. You may be confused because you can't find the book in the book store around your city. Commonly, the popular book will be sold quickly. And when you have found the store to buy the book, it will be so hurt when you run out of it. This is...