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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

Nanowires (NWs) have the potential for a wide range of new optoelectronic applications. For example, light-emitting diodes that span over the whole visible spectrum are currently being developed from NWs to overcome the well known green gap problem. However, due to their small size, NW devices exhibit special properties that complicate their analysis, characterization, and further development. In