This article argues that revolutionary leaders are more willing to commit mass killing than nonrevolutionary leaders. Revolutionary leaders are more ideologically committed to transforming society, more risk tolerant, and more likely to view the use of violence as appropriate and effective. Furthermore, such leaders tend to command highly disciplined and loyal organizations, built in the course...

Internal Medicine JournalVolume 51, Issue 8 p. 1367-1367 Letter to the Editor Author reply Matthew Loft, Loft orcid.org/0000-0003-3267-4520 Division of Personalised Oncology, Walter and Eliza Hall, Melbourne, Victoria, Australia Department Medical Biology, University AustraliaSearch for more papers by this authorHui-Li Wong, Hui-Li Wong Peter MacCallum Cancer Centre, authorPeter Gibbs, Gibbs We...

The art gallery problem [2] asks for the smallest possible size of a point set S (the guards) to completely guard the interior of a simple polygon P (the art gallery). This thesis treats variations of the original problem that arise when we introduce a coloring of the guards. Rather than asking for the minimum number of guards we ask for the minimum number of colors. In [4] L. H. Erickson and S...

We consider the problem of securing a graph against a sequence of vertex attacks by placing guards on its vertices. The guards are “mobile” in that, after any attack, each guard can move to any neighbor of its current location, but one guard must move to the attacked vertex. We determine sharp upper bounds, in terms of the order of the graph, on the minimum number of guards necessary for connec...