Sökning: "decay rate"

Visar resultat 1 - 5 av 109 avhandlingar innehållade orden decay rate.

1. 1. Time-dependent relaxation of charge and energy in electronic nanosystems

   Författare :Jens Schulenborg; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; heat current; quantum dot; relaxation rate; rate detection; generalization of hermiticity; nonunitary dynamics; open quantum system; Coulomb charging energy; voltage switch; transient response; electronic nanosystem;

   Sammanfattning : The study of the dynamics of strongly confined, interacting open quantum systems has attracted great interest over the past years, due to potential applications in nanoelectronics, metrology as well as quantum information. Most recent experimental and theoretical research in this field has shifted attention towards electronic heat currents, recognizing their potential for practical purposes as well as for tests of fundamental theories, and also aiming to control the inevitable heat dissipation of any dynamically operated electronic device. LÄS MER

3. 2. Surface Charge Dynamics on Polymeric Insulating Materials for High Voltage Applications

   Författare :Shahid Alam; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HVDC insulation.; gas neutralization; decay rate; Surface charging; electrical conductivity; surface potential; charge transport; ambient pressure;

   Sammanfattning : To meet increasing demands in electric energy, it is essential to enhance production of electricity from renewable energy sources (solar, wind and hydro). Such generation sites, however, are usually separated from consumption sites by long distances. LÄS MER

4. 3. Durability of timber members : Moisture conditions and service life assessment of bridge detailing

   Författare :Jonas Niklewski; Avdelningen för Konstruktionsteknik; []
   Nyckelord :wood; spruce; moisture; durability; decay; service life; detailing; model;

   Sammanfattning : The longevity of timber structures in exposed outdoor environments is often perceived to be unreliable as compared with that of concrete and steel structures. This situation is exacerbated to some extent by the fact that the European commission for standardization (CEN) currently provides no quantitative method for service life assessment of timber structures. LÄS MER

5. 4. Topics in Simulation and Stochastic Analysis

   Författare :Mikael Signahl; Matematisk statistik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematics; Matematik; stochastic heat equation; stochastic wave equation; error rates; truncated Levy process; discontinuities; optimal decay rate; digital communication system;

   Sammanfattning : Paper A investigates how to simulate a differentiated mean in cases where interchanging differentiation and expectation is not allowed. Three approaches are available, finite differences (FD's), infinitesimal perturbation analysis (IPA) and the likelihood ratio score function (LRSF) method. LÄS MER

7. 5. On space-time means for solutions of nonlinear Klein-Gordon equations

   Författare :Håkan Blomqvist; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nonlinear Klein-Gordon equation; linear Klein-Gordon equation; asymptotic properties; rate of decay; boundedness of space-time means; properties inherited from the corresponding linear case; nonlinear Volterra integral inequality with singular kernel; nonlinear Klein-Gordon equation;

   Sammanfattning : .... LÄS MER