Mobile vs. point guards

We study the problem of guarding orthogonal art galleries with horizontal mobile guards (alternatively, vertical) and point guards, using "rectangular vision". We prove a sharp bound on the minimum number of point guards required to cover the gallery in terms of the minimum number of vertical mobile guards and the minimum number of horizontal mobile guards required to cover the gallery. Furthermore, we show that the latter two numbers can be calculated in linear time.Comment: This version covers a previously missing case in both Phase 2 &

Border guards as an alien police: usages of the Schengen Agreement in France

The creation of a common European space following the integration of the Schengen Agreement into the acquis communautaires through the Amsterdam Treaty in 1997, and the subsequent treaties and summits, lead Member States to consider border control as a common issue. One could have thought that the lifting of the internal borders within the Schengen space would have threatened the border guard corps at the national level. This is not the case. I will show that, thanks to a change in the model of French border guards, their power and influence have in fact risen in the second part of the 1990’s. In response to the fear of a drastic cut in the workforce, French border guards mobilize to define a new model of border guard: the alien police model, which aimed at fighting against illegal immigration.administrative adaptation; Europeanization; France; free movement; immigration policy; national parliaments; policy analysis; public administration; Schengen

In comparative perspective: the effects of incarceration abroad on penal subjectivity among prisoners in Lithuania

This article looks at how global flows of people and policies affect penal subjectivity among prisoners in Lithuania. Those who had previously been incarcerated abroad perceive their punishment in Lithuania’s reforming penal system in comparative terms. We find that international prison experience may either diminish or increase the sense of the severity of the current punishment. Respondents often felt more comfortable in a familiar culture of punishment in Lithuania that emphasizes autonomy and communality. Moreover, internationalized prisoners perceive prison reform emulating West European models as a threat to this culture and are able to articulate comparative critiques of this reform and contest its effects

The market for protection and the origin of the state

We examine a stark setting in which security or protection can be provided by self-governing groups or by for-profit entrepreneurs (kings, kleptocrats, or mafia dons). Though selfgovernance is best for the population, it faces problems of long-term viability. Typically, in providing security the equilibrium market structure involves competing lords, a condition that leads to a tragedy of coercion: all the savings from the provision of collective protection are dissipated and welfare can be as low as, or even lower than, in the absence of the state