Identifying legal and illegal states significantly reduces computational complexity of ATPG. A unified framework for identification of the legal and illegal states is presented. Most known methods for identification of the legal and illegal states are interpretable within this framework. New theorems and the resulting procedures for identifying exact collection of legal or illegal states of a c...

Conventional access control mechanisms are rather insensitive to occurrences of context-dependent illegal accesses. Insensitivity to context-dependent accesses may lead to failure to protect network users and resources. Context-dependent illegal accesses resulting from data and privilege flows in open networks cannot be prevented by either authentication or access control mechanisms since unaut...

National governments can only tax the economic activity they either directly observe or that is reported by municipal authorities. mining, a very common phenomenon in Colombia, changed with a tax reform that reduced the share of revenue transferred back to mining municipalities. To overcome the challenge of measuring illegal activity, we construct a novel dataset using machine learning predicti...

OBJECTIVES Illegal drug use continues to be a major threat to community health and safety. We used international drug surveillance databases to assess the relationship between multiple long-term estimates of illegal drug price and purity. DESIGN We systematically searched for longitudinal measures of illegal drug supply indicators to assess the long-term impact of enforcement-based supply red...

In 1993, a 21m NOK (3m US$) national campaign against trade with illegal spirits (homebrewed or smuggled) was launched in Norway. This article reports results of its evaluation study. Surveys covering the age range 16-80 were carried out just before the campaign started and 1 year later. Half of those responding at baseline as well as a new sample were surveyed after 1 year. While at baseline 4...

Political borders are controversial and contested spaces. In an attempt to better understand movement along and through political borders, we applied the metaphor of a membrane to look at how people, ideas, and things “move” through a border. More specifically, we employed this metaphor in a system dynamics framework to construct a computer model to assess legal and illegal migration on the US-...

Although the terms ‘‘illegal aliens’’ and ‘‘undocumented workers’’ are often used interchangeably to refer to the same immigrant population, they have very different connotations. The present study investigated why these two terms invoke different levels of prejudice. A group of undergraduate students (n1⁄4 269) were assigned to evaluate either ‘‘illegal aliens’’ or ‘‘undocumented workers.’’ Tw...

Abuse of illegal drugs is widespread among young people, especially in the so-called "dance club scene" or "rave scene". Severe and even fatal poisonings have been attributed to the consumption of such drugs of abuse. The actions against these drugs by the Tokyo Metropolitan Government and subsequently by the Government of Japan have gone some way to reducing the potential harm caused by these ...