Let A be a nonempty nite subset of the plane representing the geographical coordinates of a set of demand points (towns,. . .), to be served by a facility, whose location within a given region S is sought. Assuming that the unit cost for a 2 A if the facility is located at x 2 S is proportional to dist(x; a) | the distance from x to a | and that demand of point a is given by ! a , minimizing th...

Instrument construction and testing The most recent modification to the Long-Period fleet is a syntactic-only floatation design. This mod was required toward the deep deployment of the Forsyth et al. deployment in the NW Pacific (described below). Deployment depth are in excess of 6 km for over a year-long duration. Similar deployments off Hawaii (i.e. PLUME) saw a series of catastrophic glass ...

Recent years have witnessed the rise of many successful e-commerce marketplace platforms like the Amazon marketplace, AirBnB, Uber/Lyft, and Upwork, where a central platform mediates economic transactions between buyers and sellers. Motivated by these platforms, we formulate a set of facility location problems that we term Two-sided Facility location. In our model, agents arrive at nodes in an ...

In facility location games, one aims at designing a mechanism to decide the facility location based on the addresses reported by all agents. In the standard facility location game, each agent wants to minimize the distance from the facility, while in the obnoxious facility game, each agent prefers to be as far away from the facility as possible. In this paper we revisit the two games on a line ...

BACKGROUND The low proportion of health facility delivery in developing countries is one of the main challenges in achieving the Millennium Development Goal of a global reduction of maternal deaths by 75% by 2015. There are several primary studies which identified socio-demographic and other predictors of birth in health facility. However, there are no efforts to synthesis the findings of these...

Most existing facility location models assume that the cost is either a fixed setup or made up of and problem-specific concave submodular term. This structural property plays critical role in developing fast branch-and-price, Lagrangian relaxation, constant ratio approximation, conic integer programming reformulation approaches for these NP-hard problems. Many practical considerations complicat...

This paper presents an algorithm for solving a multi-floor facility layout problem. The most apparent difference and also the potential difficulty in a multi-floor facility layout problem, compared to a single floor facility layout problem, are the problems regarding the placement of the vertical transportation equipments (elevators), which are to be used for vertical transportation occuring wi...

We consider the placement (location and orientation) of a single nite-size ( nite-area, arbitrary shape) facility in the plane under the assumption that all travel occurs according to the rectilinear (or Manhattan) metric in the presence of impenetrable barriers to travel. Facility users are distributed over a nite set of demand points. The facility serves the users via a service point (server)...

Facility location (FL) is a well-researched problem in operational-research (Şahin Güvenç & Haldun, 2007), and is closely related to EBC. Given a set of N customers and M potential facilities to open, as well as costs sij for customer i to use facility j, and a facility setup cost cj associated with opening a facility j, we wish to find the set of facilities to open, as well as the assignments ...