Search for dissertations about: "Time-Windows"

Showing result 1 - 5 of 34 swedish dissertations containing the word Time-Windows.

  1. 1. Probabilistic and Experimental Analysis of Heuristic Algorithms for the Multiple-Depot Vehicle-Routing Problem

    Author : Libertad Tansini; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; probabilistic analysis; Multi-Depot Vehicle-Routing problem; heuristics; Time-Windows;

    Abstract : The aim of this thesis is to analyze different heuristic algorithms for solving the Multi-Depot Vehicle-Routing problem (MDVRP) with k depots and n points to be serviced (customers). The objective is to produce a set of service routes which minimizes the total distance traveled. Heuristic approaches are essential since the problem is NP-hard. READ MORE

  2. 2. Optimal Truck Scheduling : Mathematical Modeling and Solution by the Column Generation Principle

    Author : Myrna Palmgren; Torbjörn Larsson; Niklas Kohl; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; optimisation; pickup and delivery problem; transportation; scheduling; column generation; integer programming; MATHEMATICS; MATEMATIK;

    Abstract : We consider the daily transportation problem in forestry which arises when transporting logs from forest sites to customers such as sawmills and pulp and paper mills. Each customer requires a specific amount of a certain assortment, and the deliveries to the customers can be made within time intervals, known as time windows. READ MORE

  3. 3. Environmental Pesticide Exposure and Neurobehavioral Effects among Children of Nicaraguan Agricultural Workers

    Author : Teresa Rodríguez; Catharina Wesseling; Ingvar Lundberg; Berna van Wendel de Joode; Ingvar Bergdahl; Uppsala universitet; []
    Keywords : pesticides; organophosphates; pyrethroids; children; cognitive function; behavioral outcomes; neurodevelopment; Occupational and Environmental Medicine; Arbets- och miljömedicin; Epidemiologi; Epidemiology;

    Abstract : Background: Children exposed to pesticides are susceptible for neurodevelopmental disruption. Data from developing countries are scarce.Aim: Assessing long-term and recent pesticide exposure in Nicaraguan children in relation to parental pesticide use and examining potential associated neurobehavioral effects. READ MORE

  4. 4. Planning and evaluation of autonomous vehicles in freight and public transport services

    Author : Wei Zhang; Erik Jenelius; Hugo Badia; Miquel Estrada; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : The introduction of automation technology in transport systems brings both opportunities and challenges. The direct benefits of automation technology are obvious, for instance, reduced marginal driving cost, improved energy efficiency and increased safety. READ MORE

  5. 5. Adverse effects of exposure to air pollutants during fetal development and early life : with focus on pre-eclampsia, preterm delivery, and childhood asthma

    Author : David Olsson; Bertil Forsberg; Beate Ritz; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Air pollution; pregnancy outcomes; asthma; Epidemiology; epidemiologi;

    Abstract : Background Air pollution exposure has been shown to have adverse effects on several health outcomes, and numerous studies have reported associations with cardiovascular morbidity, respiratory disease, and mortality. Over the last decade, an increasing number of studies have investigated possible associations with pregnancy outcomes, including preterm delivery. READ MORE