Sökning: "regime theory"

Visar resultat 21 - 25 av 248 avhandlingar innehållade orden regime theory.

1. 21. Quivers, superconformal field theories and higher symmetries

   Författare :Robert Moscrop; Michele Del Zotto; Johannes Walcher; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Quantum field theory; Supersymmetry; Conformal field theory; Quivers; Seiberg-Witten theory; Geometric engineering; Higher symmetries; Theoretical Physics; Teoretisk fysik; Machine learning; Maskininlärning;

   Sammanfattning : Quantum field theory (QFT) currently provides our best description of the natural world. Over the past century, it has been able to accurately reproduce many experimental results to an astonishing degree of accuracy and predict the existence of new particles. Despite this, QFT suffers from several mathematical problems. LÄS MER

3. 22. Andrahandskontrakt i folkhemmet : närmiljö och kvinnors förändringsstrategier

   Författare :Katarina Larsson; Thord Strömberg; Ann-Sofie Ohlander; Ulla Ekström von Essen; Örebro universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; Historia; Women´s organisations; municipal planning; local environment; reproductive work; laundry; collective service flats; child care; political influence; regime theory; gender relations; historia; History subjects; Historieämnen; Historia; History;

   Sammanfattning : The thesis consists of three studies of problem areas from the 1940s and 1950s, in which women’s organisations in Örebro - a middle-sized Swedish town – demanded that municipal planning of the local environment should ensure that reproductive work, i.e. housework and care work, was organised in a way deemed satisfactory by women. LÄS MER

4. 23. Capacity Analysis and Receiver Design in the Presence of Fiber Nonlinearity

   Författare :Kamran Keykhosravi; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; perturbation theory.; Achievable rate; nonlinearity mitigation; noncoherent optics; dispersion compensation; fiber optics; channel capacity; information theory;

   Sammanfattning : The majority of today's global Internet traffic is conveyed through optical fibers. The ever-increasing data demands have pushed the optical systems to evolve from using regenerators and direct-direction receivers to a coherent multi-wavelength network. LÄS MER

5. 24. Theory of water-proton spin relaxation in complex biological systems

   Författare :Zhiwei Chang; Biofysikalisk kemi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; spin relaxation theory; immobilized macromolecules; magnetic relaxation dispersion; integral longitudinal relaxation rate; stochastic Liouville equations; multi-spin systems; cross-mode relaxation; spectral density functions;

   Sammanfattning : In complex biological systems (e.g. gels, cross-linked proteins and biological tissues), the longitudinal spin relaxation of water protons is primarily induced by exchange-mediated orientational randomization (EMOR) of intra- and intermolecular magnetic dipole-dipole couplings. LÄS MER

7. 25. Quantum Theory of Exciton-Exciton Interactions in Atomically Thin Semiconductors

   Författare :Daniel Erkensten; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; excitons; transition-metal dichalcogenides; many-body theory; van der Waals heterostructures; 2D materials;

   Sammanfattning : Atomically thin materials such as transition-metal dichalcogenides (TMDs) have emerged as an unprecedented platform for engineering future optoelectronic devices and studying exotic quantum phases of matter. In particular, the strong Coulomb interaction in these materials enables the formation of tightly-bound excitons, electron-hole pairs with neither purely fermionic nor bosonic character. LÄS MER