Sökning: "first and second-order system"

Visar resultat 1 - 5 av 75 avhandlingar innehållade orden first and second-order system.

  1. 1. Perspectives on Modeling and Simulation of Urban Systems with Multiple Actors and Subsystems

    Författare :Elhabib Moustaid; Sebastiaan Meijer; Gunnar Flötteröd; S Rajagopalan; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Simulation Modeling; Urban Systems; Expert Knowledge; Complexity Science; Mathematical Modeling; Second Order Effects.; Simulering och modellering; urbana system; expertkunskap; Komplexitetsvetenskap; matematisk modellering; andra graden effekt; Teknik och hälsa; Technology and Health;

    Sammanfattning : Cities are the spaces of the interaction between social, physical, political, and economic entities, which makes planning and intervening in such systems difficult. Urban systems are complex adaptive systems in that their behaviours are often the result of the interaction of their components. LÄS MER

  3. 2. Blind Signal Separation by Second Order Statistics

    Författare :Henrik Sahlin; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The problem of separating uncorrelated signals from equally many observed mixtures is considered in this thesis. Each observed signal is modeled as a sum of original signals filtered through unknown linear filters. LÄS MER

  4. 3. Distributed Optimization and Control : Primal--Dual, Online, and Event-Triggered Algorithms

    Författare :Xinlei Yi; Karl H. Johansson; Dimos V. Dimarogonas; John S. Baras; Antonis Papachristodoulou; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Distributed nonconvex optimization; distributed online convex optimization; distributed event-triggered control; primal-dual algorithm; stochastic gradient descent; zeroth-order algorithm; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : In distributed optimization and control, each network node performs local computation based on its own information and information received from its neighbors through a communication network to achieve a global objective. Although many distributed optimization and control algorithms have been proposed, core theoretical problems with important practical relevance remain. LÄS MER

  5. 4. Exploring the Effects of ICT on Environmental Sustainability: From Life Cycle Assessment to Complex Systems Modeling

    Författare :Mohammad Ahmadi Achachlouei; Åsa Moberg; Göran Finnveden; Lorenz M. Hilty; Chris Preist; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Information and communication technology ICT ; sustainability assessment; electronic media; tablet; print media; magazine; Internet; energy; environmental impact; life cycle assessment LCA ; System Dynamics; agent-based modeling; differential equations; simulation modeling; complex and dynamic systems modeling; Informations- och kommunikationsteknik IKT ; hållbarhetsbedömning; elektroniska media; surfplatta; tryckta media; tidskrift; Internet; energi; miljöpåverkan; simulering; differentialekvationer; modellering av komplexa och dynamiska system; System Dynamics; livscykelanalys LCA ; agentbaserad modellering; Planering och beslutsanalys; Planning and Decision Analysis; Informations- och kommunikationsteknik; Information and Communication Technology; Industriell ekologi; Industrial Ecology; Tillämpad matematik och beräkningsmatematik; Applied and Computational Mathematics;

    Sammanfattning : The production and consumption of information and communication technology (ICT) products and services continue to grow worldwide. This trend is accompanied by a corresponding increase in electricity use by ICT, as well as direct environmental impacts of the technology. Yet a more complicated picture of ICT’s effects is emerging. LÄS MER

  7. 5. Multiple-Input Multiple-Output Radio Propagation Channels : Characteristics and Models

    Författare :Kai Yu; Björn Ottersten; David Gesbert; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signalbehandling; Signalbehandling; Signal processing; Signalbehandling;

    Sammanfattning : In recent years, deploying multiple antennas at both transmitter and receiver has appeared as a very promising technology. By exploiting the spatial domain, multiple-input multiple-output (MIMO) systems can support extremely high data rates as long as the environments can provide sufficiently rich scattering. LÄS MER