Search results for "Manufacturing engineering"

showing 7 items of 1977 documents

Minimizing fleet operating costs for a container transportation company

2006

Abstract This paper focuses on a fleet management problem that arises in container trucking industry. From the container transportation company perspective, the present and future operating costs to minimize can be divided in three components: the routing costs, the resource (i.e., driver and truck) assignment costs and the container repositioning costs (i.e., the costs of restoring a given container fleet distribution over the serviced territory, as requested by the shippers that own the containers). This real-world problem has been modeled as an integer programming problem. The proposed solution approach is based on the decomposition of this problem in three simpler sub-problems associate…

transportationstochastic fleet managementInformation Systems and ManagementdecompositionGeneral Computer ScienceOperations researchComputer sciencebusiness.industryComputerApplications_COMPUTERSINOTHERSYSTEMSManagement Science and Operations ResearchIndustrial and Manufacturing EngineeringResource (project management)container truckingModeling and SimulationContainer (abstract data type)Decomposition (computer science)set covering problemRouting (electronic design automation)Container trucking; Decomposition; Set covering problem; Stochastic fleet management; TransportationbusinessInteger programmingtransportation; container trucking; stochastic fleet management; decomposition; set covering problemFleet management

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Highly Sensitive Polarization Rotation Measurement through a High‐Order Vector Beam Generated by a Metasurface

2020

The precise determination of the polarization state of light is fundamental for a vast variety of applications in remote sensing, astronomy, optics and terahertz technology, to name just a few. Typically, polarization characterization is performed by using a combination of multiple optical devices such as beam splitters, polarizers, and waveplates. Moreover, to achieve high-precision, balanced photodetectors and lock-in amplifiers are employed, thus contributing to increasing system complexity. Here, a technique for polarization rotation measurements with a dynamic range of 180° and a sensitivity of about 10−2 degrees is realized using a properly designed metasurface. Such device generates …

vector beamsMaterials sciencebusiness.industryMetasurface02 engineering and technologyorbital angular momentum of lightpolarization measurement021001 nanoscience & nanotechnologyPolarization (waves)01 natural sciencesIndustrial and Manufacturing EngineeringHighly sensitive010309 opticsOpticsMechanics of Materials0103 physical sciencesGeneral Materials ScienceOrbital angular momentum of light0210 nano-technologybusinessAdvanced Materials Technologies

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Teenage Violence Toward Parents – in Search of the Theoretical Bases of a Research Tool

2020

The article contains an analysis of results of the available research on the phenomenon of children’s violence toward their parents. The main purpose of this interpretation is to search for the theoretical structure of a prepared research tool, initially called the Teen Violence Scale Toward Parents (TVSTP). The subject of the analyzes were works and research reports as well as police statistics containing information on the phenomenon of domestic violence, including teenage violence toward parents. As a result of the analysis, the theoretical function of the proposed research tool was distinguished, referring to types of violence possible to diagnose within this area. The proposed tool was…