• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 2
  • 1
  • Tagged with
  • 3
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Matrix Structure for Information-Driven Polarimeter Design

Alenin, Andrey S. January 2015 (has links)
Estimating the polarization of light has been shown to have merit in a wide variety of applications between UV and LWIR wavelengths. These tasks include target identification, estimation of atmospheric aerosol properties, biomedical and other applications. In all of these applications, polarization sensing has been shown to assist in discrimination ability; however, due to the nature of many phenomena, it is difficult to add polarization sensing everywhere. The goal of this dissertation is to decrease the associated penalties of using polarimetry, and thereby broaden its applicability to other areas. First, the class of channeled polarimeter systems is generalized to relate the Fourier domains of applied modulations to the resulting information channels. The quality of reconstruction is maximized by virtue of using linear system manipulations rather than arithmetic derived by hand, while revealing system properties that allow for immediate performance estimation. Besides identifying optimal systems in terms of equally weighted variance (EWV), a way to redistribute the error between all the information channels is presented. The result of this development often leads to superficial changes that can improve signal-to-noise-ration (SNR) by up to a factor of three compared to existing designs in the literature. Second, the class of partial Mueller matrix polarimeters (pMMPs) is inspected in regards to their capacity to match the level of discrimination performance achieved by full systems. The concepts of structured decomposition and the reconstructables matrix are developed to provide insight into Mueller subspace coverage of pMMPs, while yielding a pMMP basis that allows the formation of ten classes of pMMP systems. A method for evaluating such systems while considering a multi-objective optimization of noise resilience and space coverage is provided. An example is presented for which the number of measurements was reduced to half. Third, the novel developments intended for channeled and partial systems are combined to form a previously undiscussed class of channeled partial Mueller matrix polarimeters (c-pMMPs). These systems leverage the gained understanding in manipulating the structure of the measurement to design modulations such that the desired pieces of information are mapped into channels with favorable reconstruction characteristics.
2

Moduluppbyggnad av ramstyrda dumprar ur ett produktionsperspektiv – Volvo CE AB i Braås / Module construction of articulated haulers through a production perspective – Volvo CE AB in Braås

Skoog, Johanna, Nagy, Thomas January 2006 (has links)
Denna rapport i form av examensarbete för utbildningsprogrammet Managing Technology and Business Projects, är en del i Volvos framtida produktions-/ produktstrategier. Uppsatsens syfte är att ur ett produktionsperspektiv understödja Volvo Construction Equipment i Braås i strävan mot en ökad modulindelning av ramstyrda dumprar, som en del i utvecklingsarbetet för en effektivare produktion. Resultat har uppnåtts genom analys av intern och extern benchmarking jämfört med den teori som finns inom ämnesområdet modulindelning. Huvudresultatet visar att teorin och verkligheten skiljer sig genom att modulindelning ska anpassas individuellt utifrån varje företag och inte fungerar som en generellt applicerbar process. Slutsatsen visar att Volvo CE i Braås måste utveckla en egen handlingsplan och kravspecifikation utifrån egna definitioner som är skräddarsydda specifikt för företaget. I rapporten presenteras förslag till ovanstående handlingsplan för modulindelning på Volvo CE i Braås. / This diplomawork is the ending part of the education program Managing technology and Business Projects at Växjö University and was given as an assignment from Volvo Construction Equipment in Braås. The work is a part of Volvos future production- and product strategies and aims to support Volvo in their work towards a module classification of the articulated hauler line built in Braås. The result has been reached trough analysis of internal and external benchmarking compared to the theory regarding the subject. The main result shows that theory diverges from reality in the way that modularization must be adjusted individually for each company and that it doesn’t work as a general applicable process. The conclusion shows that Volvo CE in Braås must develop a unique plan of action from the in-house definitions that is tailored specifically for the company.
3

Moduluppbyggnad av ramstyrda dumprar ur ett produktionsperspektiv – Volvo CE AB i Braås / Module construction of articulated haulers through a production perspective – Volvo CE AB in Braås

Skoog, Johanna, Nagy, Thomas January 2006 (has links)
<p>Denna rapport i form av examensarbete för utbildningsprogrammet Managing Technology and Business Projects, är en del i Volvos framtida produktions-/ produktstrategier.</p><p>Uppsatsens syfte är att ur ett produktionsperspektiv understödja Volvo Construction Equipment i Braås i strävan mot en ökad modulindelning av ramstyrda dumprar, som en del i utvecklingsarbetet för en effektivare produktion. Resultat har uppnåtts genom analys av intern och extern benchmarking jämfört med den teori som finns inom ämnesområdet modulindelning. Huvudresultatet visar att teorin och verkligheten skiljer sig genom att modulindelning ska anpassas individuellt utifrån varje företag och inte fungerar som en generellt applicerbar process. Slutsatsen visar att Volvo CE i Braås måste utveckla en egen handlingsplan och kravspecifikation utifrån egna definitioner som är skräddarsydda specifikt för företaget.</p><p>I rapporten presenteras förslag till ovanstående handlingsplan för modulindelning på Volvo CE i Braås.</p> / <p>This diplomawork is the ending part of the education program Managing technology and Business Projects at Växjö University and was given as an assignment from Volvo Construction Equipment in Braås.</p><p>The work is a part of Volvos future production- and product strategies and aims to support Volvo in their work towards a module classification of the articulated hauler line built in Braås.</p><p>The result has been reached trough analysis of internal and external benchmarking compared to the theory regarding the subject. The main result shows that theory diverges from reality in the way that modularization must be adjusted individually for each company and that it doesn’t work as a general applicable process. The conclusion shows that Volvo CE in Braås must develop a unique plan of action from the in-house definitions that is tailored specifically for the company.</p>

Page generated in 0.0605 seconds