A Greedy Randomized Adaptive Search Procedure for Technicians and Interventions Scheduling for Telecommunications

The subject of the 5th challenge proposed by the French Society of Operations Research and Decision Analysis (ROADEF) consists in scheduling technicians and interventions for telecommunications (http://www.g-scop.inpg.fr/ChallengeROADEF2007/ or http://www.roadef.org/). We detail the algorithm we proposed for this challenge which is a Greedy Randomized Adaptative Search Procedure (GRASP). Computational results led us to the 1st position in the Junior category and to the 4th position in All category of the Challenge ROADEF 2007.Comment: 3 page

異なる月経周期における暑熱環境下長時間運動中の体温調節および炎症反応に飲料摂取が及ぼす影響

早大学位記番号:新6857早稲田大

Percepcija u inteligentnim prostorima: kombinirana primjena distribuiranih i robotskih senzora

This work considers the joint use of robot onboard sensors and a network of sensors distributed in the environment for tracking the position of the robot and other objects. This is motivated by our research on Intelligent Spaces, which combine the use of distributed sensors with mobile robots to provide various services to users. Here we analyze the distributed sensing using the extended information filter and computation issues that arise due to correlations between estimates. In turn we show how the correlations can be resolved with the use of Covariance Intersection at a cost of conservative estimates, and analyze two special cases where the issues related to correlations can be reduced.Ovaj rad razmatra kombiniranu primjenu senzora na mobilnim robotima i mreže senzora distribuiranih u prostoru za praćenje položaja robota i ostalih objekata. Rad je dio istraživanja o "inteligentnim prostorima", gdje se koriste distribuirani senzori i mobilni roboti sa svrhom pružanja različitih usluga korisnicima prostora. Analizirana je upotreba proširenog informacijskog filtra za distribuiranu percepciju te računski problem uzrokovan korelacijama u procesu estimacije. Potom je objašnjeno rješenje problema korelacija korištenjem metode presjeka kovarijanci (Covariance Intersection), koje međutim daje konzervativne rezultate, te je dana analiza dva specijalna slučaja kod kojih je moguće ublažiti utjecaj korelacija

Park Vector Based Sliding Mode Control of UPS With Unbalanced and Nonlinear Load

In this paper an inverter is taken as a member of Variable Structure System (VSS). A new Park vector based variable structure control (VSC) method is proposed. A modified definition of the Park vector is introduced to handle the effect of zero phase-sequence component caused by an asymmetrical load. The design of a sliding mode controller consists of two main steps. Firstly, the design of the sliding surface, secondly, the design of the control which holds the system trajectory on the sliding surface. A complex sliding surface is proposed. The inverter is switched in such a way that the system trajectory gets as close to the sliding surface as possible. This paper focuses on the switching rule. Experimental results of a 100 KVA inverter are presented