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