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The aim of this work is the development of a thermodynamically consistent fully coupled thermo-viscoplastic material model for metals undergoing finite deformations. A multiplicative split of the deformation gradient into a thermal, an elastic and a plastic part is introduced, where isotropic thermal expansion and isochoric plastic deformation are assumed. The model is based on a decomposition of
Den här avhandlingen berör två olika forskningsområden som är relaterade till fysiken för nanosystem. Det första området rör kvantkorrelationer och sammanflätning mellan elektroner i nanosystem, med ett särskilt fokus på hur man kan generera elektronisk orbital sammanflätning på tidsskalor mycket kortare än dekoherenstiden och hur man kan göra detektionen av sammanflätning enklare experimentellt. This thesis addresses two different topics related to the physics of nanoscale systems. The first topic concerns quantum correlations and entanglement between electrons in solid-state systems, with a focus on how to generate electronic orbital entanglement on a sub-decoherence time scale and how to achieve experimentally more feasible entanglement detection schemes. The second topic concerns heat
Inom besöksnäringen är delningsekonomins utbredning särskilt tydlig och inom denna industri återfinns en rad företag såsom Airbnb, Vayable, Getmyboat, OffWeFly, EatWith, Uber, Fodora och Travelbuddy. Airbnb, som förmedlar uthyrning av privatpersoners bostäder som en sorts hotellrum, är kanske det mest välkända företaget. Typiskt för delningsekonomin i tjänstesektorn är digitala plattformar som sam
Massive multiple-input multiple-output (MIMO) is expected to be a vital component in future 5G systems. As such, there is a need for new modeling in order to investigate the performance of massive MIMO not only at the physical layer, but also higher up the networking stack. In this paper, we present general optimization models for massive MIMO, based on mixed-integer programming and compatible setMassive multiple-input multiple-output (MIMO) is expected to be a vital component in future 5G systems. As such, there is a need for new modeling in order to investigate the performance of massive MIMO not only at the physical layer but also higher up the networking stack. In this paper, we present general optimization models for massive MIMO, based on mixed-integer programming and compatible sets
The article tries to analyze Yemeni future by discussing the affecting factors currently in the light of ongoing war and the relationship with foreign countries interfering in the conflict in Yemen
This article addresses the potential choices toward Stockholm agreement between Yemeni government and the Houthi rebels
It shows the characters of Yemeni politicians, in every party, how they put their interests as a first priority above of the public interests
Populärvetenskaplig sammanfattning2008 infördes en reform inom svensk politik för arbetskraftsmigration som möjliggjorde för personer utanför EU att komma till Sverige för att arbeta om de erbjudits anställning oavsett utbildningsbakgrund. Reformen har fått mycket uppmärksamhet och ritat om kartan för svensk migrationspolitik. Till ett av de mindre utforskade områdena hör s.k. spårbyten, det vill Many people believe that changes in Swedish migration politics in the last decade signal a turning point and perhaps the end of the well-reputed Swedish exceptionalism. In 2008, Swedish labour migration policy was transformed into one of the most open in whole OECD, whilst Swedish asylum migration policy, known for its humanitarianism, took a significant turn toward restrictiveness in 2016. For se
The critical reception should not underestimate the readers, nor overestimate them, but approximate the correct intellectual level. We hear so often the pathetic slogan: "We are the elite"! During modernism, it was known who the elite was; in postmodernism, the elite was sprawled and distributed in honeycombs: even tv anchors perceive themselves as an elite (which the other elites do not know). Na
Long-distance migrants with transcontinental breeding ranges are of particular interest for the study of local adaptation and geographic differentiation in birds. We compared phenotypes and genotypes between Far East Siberian Willow Warblers Phylloscopus trochilus yakutensis Ticehurst, 1935 with the European subspecies P. t. trochilus Linnaeus, 1758 and P. t. acredula Linnaeus, 1758. We found sign
Car-sharing systems with electric vehicles are an alternative to reduce commuting times in big cities and also to mitigate air pollution. Car-sharing exists in 1100 cities around the world. These systems have had positive effects in the cities, replacing between 9 and 23 private vehicles for each car. This document proposes a public car-sharing system for Bogotá. The article focuses on the design
A large strand of research holds that democracy with its broad representation and electoral accountability is beneficial for the provision of public goods. Yet, there is a large variation in how democracies perform, indicating that democratic institutions alone do not suffice for securing citizens’ wellbeing. Recent studies have stressed the equal importance of state capacity for public goods deli
The band offset between wurtzite (wz) and zinc-blende (zb) GaAs is an important fundamental parameter in polytype heterostructure engineering. Since the interface has a type-II band alignment, it is reasonably straightforward to measure the band offset using photoluminescence (PL) e.g. on nanowires containing heterostructures between wz and zb GaAs. It has, however, been found that the transition
