Sökning: "propagation"

Visar resultat 16 - 20 av 1243 avhandlingar innehållade ordet propagation.

1. 16. Propagation environment modeling using scattered field chamber

   Författare :Magnus Otterskog; Dag Stranneby; Pertti Vainikainen; Örebro universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Reverberation Chamber; Scattered Field Chamber; Propagation environments; Antenna measurements; Electrical engineering; Elektroteknik; Elektronik; Electronics;

   Sammanfattning : This thesis covers the development of the Reverberation Chamber as a measurement tool for cell phone tests in electronic production. It also covers the development of the Scattered Field Chamber as a measurement tool for simulations of real propagation environments. LÄS MER

3. 17. Other Things Besides Number : Abstraction, Constraint Propagation, and String Variable Types

   Författare :Joseph Scott; Pierre Flener; Parosh Abdulla; Justin Pearson; Michel Rueher; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; constraint programming; string constraint problems; Galois connections; abstraction; constraint propagation; computer-aided verification applications; Datavetenskap; Computer Science;

   Sammanfattning : Constraint programming (CP) is a technology in which a combinatorial problem is modeled declaratively as a conjunction of constraints, each of which captures some of the combinatorial substructure of the problem. Constraints are more than a modeling convenience: every constraint is partially implemented by an inference algorithm, called a propagator, that rules out some but not necessarily all infeasible candidate values of one or more unknowns in the scope of the constraint. LÄS MER

4. 18. Wave propagation in sandwich structure

   Författare :Shiva Sander Tavallaey; KTH; []
   Nyckelord :Sandwich structure- wave propagation- dynamic behavior;

   Sammanfattning : .... LÄS MER

5. 19. Transient electromagnetic pulse propagation in temporally dispersive materials

   Författare :Igor Egorov; Institutionen för elektro- och informationsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Green functions; direct scattering; time domain; wave propagation; bi-gyrotropic; chiral; bi-isotropic; Forerunner; precursor; Green dyadics; Electronics and Electrical technology; Elektronik och elektroteknik;

   Sammanfattning : This thesis treats the problem of transient electromagnetic pulse propagation in temporally dispersive media. The analysis is performed using time-domain techniques. In particular, the dispersive wave splitting which decouples the Maxwell equations both in vacuum and inside the medium is utilized. LÄS MER

7. 20. Wireless Communication with Medical Implants: Antennas and Propagation

   Författare :Anders J Johansson; Institutionen för elektro- och informationsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; medical implant communication; electromagnetic propagation; biomedical telemetry; antennas in matter; MICS; Electronics; Elektronik;

   Sammanfattning : With the increased sophistication of medical implants, there is a growing need for flexible high-speed communication with the implant from outside the body. Today the communication is done by an inductive link between the implant and an external coil at a low carrier frequency. LÄS MER