Sökning: "free time"

Visar resultat 11 - 15 av 1896 avhandlingar innehållade orden free time.

1. 11. Two Problems in non-linear PDE’s with Phase Transitions

   Författare :Karl Jonsson; Henrik Shahgholian; Tomas Sjödin; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Conductivity jump; Free boundary problem; Quasilinear elliptic equation; Mathematical techniques; Nonlinear analysis; Free boundary; Free-boundary problems; Quasi-linear elliptic; Quasilinear elliptic equations; Hele-Shaw flow; non-local; implicit function theorem; Heterogeneous Multi Scale; HMM; Finite Element; FEM; FE; Mathematics; Matematik;

   Sammanfattning : This thesis is in the field of non-linear partial differential equations (PDE), focusing on problems which show some type of phase-transition. A single phase Hele-Shaw flow models a Newtoninan fluid which is being injected in the space between two narrowly separated parallel planes. LÄS MER

3. 12. Applications of time-dependent configuration-interaction singles for photoelectrons in attosecond and free-electron laser sciences

   Författare :Mattias Bertolino; Matematisk fysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; laser-assisted photoionization; photoelectron interferometry; attosecond physics; free-electron laser; second quantization; time-dependent configuration-interaction singles; surface-flux techniques;

   Sammanfattning : This thesis addresses the theoretical treatment of photoelectrons in attosecond and free-electron laser sciences. Wehave implemented methods that extract information on the photoionization process, which we use to investigateinterferometric schemes with particular focus on multiphoton ionization and strong-field effects in attosecondmetrology and coherent control of photoelectrons in free-electron laser science. LÄS MER

4. 13. Collision-free path coordination and cycle time optimization of industrial robot cells

   Författare :Domenico Spensieri; Stiftelsen Fraunhofer-Chalmers Centrum för Industrimatematik (FCC); []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cycle time optimization; multi-robot collision avoidance; production planning; multi-robot routing and coordination;

   Sammanfattning : In industry, short ramp-up times, product quality, product customization and high production rates are among the main drivers of technological progress. This is especially true for automotive manufacturers whose market is very competitive, constantly pushing for new solutions. LÄS MER

5. 14. Lock-free Data Structures in Multicore Software Programming

   Författare :Dang Nhan Nguyen; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mark-Split; Concurrent Data Structures; Garbage Collection; Lock-free; Concurrent Garbage Collector; Composition; Java;

   Sammanfattning : Lock-free data objects have been proven to have many advantages over their lock-based counter-parts such as high scalability, performance, and immunity to deadlocks and livelocks. Several lock-free implementations of fundamental data structures have been introduced in the literature, and used in practice. LÄS MER

7. 15. Free Volume Determination in Polymers and Polymer Blends

   Författare :Camilla Wästlund; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; positronium formation; crystallinity; polymer blends; inhibition; polymers; free volume; positron annihilation; phase separation; distribution;

   Sammanfattning : The free volume of a polymer, which corresponds to the unoccupied regions accessible to segmental motions, is an important parameter for understanding and predicting many of its characteristic properties. The concept of free volume is the basis for understanding the molecular mobility in polymers. LÄS MER