Positioning addresses the problem of determining the position of a mobile robot from sensor data. This paper presents a method with which a mobile robot can automatically discover a set of landmarks used as reference for positioning,and also train artificial neural networks to recognize them. The method is applicable to a large variety of sensors and environments. Extensive experiments with a m...

In this paper, we consider a generic product line design and positioning problem in the context of variety creation using a core product and add-on services. While the functional output of the core product is identical across the products, product variety is created using add-on services that do not alter the functionality of the core product. The motivation for our study comes from emerging fo...

in this paper, we investigate a problem of finding natural condition to assure the product of two graphs to be hamilton-connected. we present some sufficient and necessary conditions for $gbox h$ being hamilton-connected when $g$ is a hamilton-connected graph and $h$ is a tree or $g$ is a hamiltonian graph and $h$ is $k_2$.

This paper addresses to the Cell Formation Problem (CFP) in which Automated Guided Vehicles (AGVs) have been employed to transfer the jobs which may need to visit one or more cells. Because of added constraints to problem such as AGVs’ conflict and excessive cessation on one place, it is possible that AGVs select the different paths from one cell to another over the time. This means that the ti...

Production costs in general, and workforce and inventory costs in particular, constitute a large fraction of the operating costs of many manufacturing plants. We introduce cooperative aggregate production planning as a way to decrease these costs. That is, when production planning of two or more facilities (plants) is integrated, they can interchange workforce and products inventory; thus, thei...

In this paper we present a work in progress dedicated to the recognition and prediction of mobile user activities. In contrast with related projects that generally use GPS for localization, we employ a fusion of wireless positioning methods available in current smartphones (GPS, GSM, Wi-Fi). Our positioning system offers high availability and accuracy without dedicated calibration. We demonstra...

in many infeasible linear programs it is important to construct it to a feasible problem with a minimum pa-rameters changing corresponding to a given nonnegative vector. this paper defines a new inverse problem, called “inverse feasible problem”. for a given infeasible polyhedron and an n-vector a minimum perturba-tion on the parameters can be applied and then a feasible polyhedron is concluded.

The paper addresses the general problem of estimating the position of an underwater target carrying an acoustic emitter by measuring the times of arrival (TOAs) of the acoustic signals at a set of surface buoys equipped with submerged hydrophones and GPS receivers. Examples of underwater targets of interest include AUVs (Autonomous Underwater Vehicles) and ROVs (Remotely Operated Vehicles) as w...