Sökning: "Homogeneous"

Visar resultat 1 - 5 av 789 avhandlingar innehållade ordet Homogeneous.

  1. 1. Asymptotic Problems on Homogeneous Spaces

    Detta är en avhandling från Uppsala : Department of Mathematics

    Författare :Anders Södergren; Uppsala universitet.; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Analysis on homogeneous spaces; hyperbolic manifolds; spectral theory; equidistribution; the space of lattices; length statistics; Poisson process; moments; Epstein zeta function; value distribution; height function.; MATHEMATICS; MATEMATIK; Mathematics; Matematik;

    Sammanfattning : This PhD thesis consists of a summary and five papers which all deal with asymptotic problems on certain homogeneous spaces.In Paper I we prove asymptotic equidistribution results for pieces of large closed horospheres in cofinite hyperbolic manifolds of arbitrary dimension. LÄS MER

  2. 2. Lean Homogeneous combustion for SI-Engines

    Detta är en avhandling från Uppsala : Department of Mathematics

    Författare :Gerben Doornbos; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Lean homogeneous combustion; lean limit.; Dual Coil Ignition; ammonia formation catalyst; valve-timing;

    Sammanfattning : This thesis is about the application of lean homogeneous combustion in SI engines using a passive SCR after treatment system. By implementing this concept a decrease in fuel consumption and engine out NOx is expected. The data and results are obtained through engine experiments. LÄS MER

  3. 3. Techniques to Tighten the Upper Bound on the ExecutionTime of Task-based Parallel Applications

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Petros Voudouris; [2018]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Parallel; Identical; Multiprocessor; WCET; multicore; DAG; Uniform; Hard; Real-Time; Homogeneous; Dynamic; Unrelated; Makespan; Related; Scheduling;

    Sammanfattning : To use multiprocessors in hard real-time systems, schedulability analysis is needed to provide formally proven guarantees for the timing behavior of the system. Programming models for parallel applications, such as OpenMP, use pragmas to specify parts of the application as parallel tasks, for example, a function or a body of a loop. LÄS MER

  4. 4. A Treatise on the Geometric and Electronic Structure of Clusters Investigated by Synchrotron Radiation Based Electron Spectroscopies

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Andreas Lindblad; Uppsala universitet.; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cluster; nanoparticle; Heterogeneous; Homogeneous; Mixed; Cluster production methods; co-expansion; pick-up; doping; Cluster geometry; radial segregation; Interatomic Coulombic Decay; ICD; Auger electron spectroscopy; AES; X-ray photoelectron spectroscopy; XPS; Ultra-violet spectroscopy; UPS; Noble gas; Rare gas; Ne; Ar; Kr; Xe; Ammonia; NH3; Sulphur hexafluoride; SF6; MAX-lab; BESSY; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Sammanfattning : Clusters are finite ensembles of atoms or molecules with sizes in the nanometer regime (i.e. nanoparticles). This thesis present results on the geometric and electronic structure of homogeneous and heterogeneous combinations of atoms and molecules. LÄS MER

  5. 5. Control of HCCI by aid of Variable Valve Timings with Specialization in Usage of a Non-Linear Quasi-Static Compensation

    Detta är en avhandling från Stockholm : KTH

    Författare :Fredrik Agrell; KTH.; [2006]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HCCI; Homogeneous; Charge Compression Ignition; Engine Control; Variable Valve Timings; TECHNOLOGY Other technology; TEKNIKVETENSKAP Övriga teknikvetenskaper;

    Sammanfattning : This doctoral thesis is about controlling the combustion timing of the combustion concept Homogeneous Charge Compression Ignition, HCCI, by means of variable valve timings.The HCCI research usually is regarded to have started in Japan during the later part of the 1970´s. The world of HCCI has since grown and HCCI is of today researched worldwide. LÄS MER