Robust tower location for code division multiple access networks

Designing Code Division Multiple Access networks includes determining optimal locations of radio towers and assigning customer markets to the towers. In this paper, we describe a deterministic model for tower location and a stochastic model to optimize revenue given a set of constructed towers. We integrate these models in a stochastic integer programming problem with simple recourse that optimizes the location of towers under demand uncertainty. We develop algorithms using Benders' reformulation, and we provide computational results. © 2006 Wiley Periodicals, Inc. Naval Research Logistics, 2007     

The Changing Nature of Legitimate Authority in the Just War Tradition

ABSTRACT

The legitimate authority principle has become reduced to the issue of state authority. In its current formulation, the state has the sole authority to wage war, and because non-state actors, by their very definition, cannot satisfy this principle, their use of force is inherently unethical. This does not reflect the reality that non-state actors are increasingly engaging in the use of force, sometimes legitimately. As a result, the legitimate authority principle can and should look beyond the state. This article navigates a terrain in which non-state actors engage in the use of force, and in which revisionist just war thinking proposes that the concept of legitimate authority is irrelevant to thinking about the ethics of war. It proposes a principled approach to the inclusion of some non-state actors under the rubric of legitimate authority. This approach draws upon the historical development of the legitimate authority principle and incorporates the factors important to early writers on the subject.