Sökning: "mixed system"

Visar resultat 1 - 5 av 623 avhandlingar innehållade orden mixed system.

  1. 1. Design, analysis and integration of mixed-signal systems for signal and power integrity

    Detta är en avhandling från Kista : Mikroelektronik och informationsteknik

    Författare :Li-Rong Zheng; [2001]
    Nyckelord :signal integrity; power distribution; interconnects; deep submicron circuits; system-on-chip; system-in-package; mixed signalsystem; single level integration;

    Sammanfattning : .... LÄS MER

  2. 2. Nutrient cycling in agroecosystems: nitrogen cycling in southern Sweden in the 1850s and two Tanzanian villages in the 1990s

    Detta är en avhandling från Lund

    Författare :Lars-Erik Williams; [1999]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nutrient; nutrient model; nutrient cycling; nitrogen fixation; nitrogen budget; mixed system; miombo; manure; livestock; land use; historical system; food production; efficiency; crops; agroecosystem; carrying capacity; phosphorus; Scania; sustainability; Plant ecology; Växtekologi;

    Sammanfattning : This study presents a general model for analysing nutrient cycling in agroecosystems. The focus is on food production intensity, human carrying capacity, sustainability and efficiency. The model can be used on systems including different kinds of land uses, which makes it applicable for studies on different scales. LÄS MER

  3. 3. Haulage system optimization for underground mines A discrete event simulation and mixed integer programming approach

    Detta är en avhandling från Luleå tekniska universitet

    Författare :Abubakary Salama; [2014]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och Berganläggningsteknik;

    Sammanfattning : In coming decades, many underground mines will operate at greater depths, which will affect many operational factors such as increased rock stress, longer haulage distances, and higher energy consumption, which potentially can generate lower production rates. The increased rock stresses may lead to smaller sized openings, further restricting the size of loading and hauling equipment that can be used. LÄS MER

  4. 4. Systems Dependability Engineering for Wind Power Applications Challenges, Concepts, and System-Level Methodologies

    Detta är en avhandling från Växjö : School of Engineering, Linnaeus University

    Författare :Idriss El-Thalji; Anders Karlsson; [2010]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; System Dependability; Systems Engineering; Terotechnology; Terotechnology; Systemekonomi;

    Sammanfattning : Complexity and uncertainty have impacted wind power systems and their applications.Commercial wind power asset exhibits complex system behaviour due tostochastic loading characteristics of its installation context. However, differentstakeholders’ practices in whole life cycle processes try to treat multi-disciplinarycomplexity issues. LÄS MER

  5. 5. Optimal Railroad Power Supply System Operation and Design Detailed system studies, and aggregated investment models

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Lars Abrahamsson; Lennart Söder; Arnd Stephan; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Railway power supply systems (RPSSs) differ mainly from public power systems from that the loads are moving. These moving loads are motoring trains. Trains can also be regenerating when braking and are then power sources. These loads consume comparatively much power, causing substantial voltage drops, not rarely so big that the loads are reduced. LÄS MER