Popular Abstract in Swedish Användandet av mer än en antenn för både sändare och mottagare i radiokommunikation kommer att spela en viktig roll för att uppnå den önskade dataöverföringshastigheten på upp till 1 gigabit per sekund i nästa generations kommunikationssystem. Detta eftersom tekniken, känd som multiple-input multiple-output (MIMO), ger en dataöverföringshastigheten som är proportionerliThe use of multi-antenna systems with multiple-input multiple-output (MIMO) technology will play a key role in providing high spectrum efficiency for next generation mobile communication systems. This thesis offers valuable insights on the design of compact multi-antennas for efficient MIMO communications. In the course of the thesis work, several novel six-port antenna designs have been proposed

WHO estimated in 2002 that 1.4 million children in the world would die from preventable diseases (World Health Organization, 2010). Each child is, or should be, immunized according to their national immunization schedule, which regulates i.e. vaccines and doses. Problems emerge when immigrant children should be transferred from one national vaccination schedule into another. This problem is quite

This paper addresses the problem of distributed Kalman filtering, with focus on limiting the required communication bandwidth. By distributed we refer to a scenario when all nodes in the network desire an estimate of the full state of the observed system and there is no centralized computation center. Communication only takes place between neighbors and only a fixed number of times each sample. To

Background A 1-h algorithm based on high-sensitivity cardiac troponin T (hs-cTnT) testing at presentation and again 1 h thereafter has been shown to accurately rule out acute myocardial infarction. Objectives The goal of the study was to evaluate the diagnostic accuracy of the 1-h algorithm when supplemented with patient history and an electrocardiogram (ECG) (the extended algorithm) for predicti

This article investigates strategic communication in the context of the wider adoption of “campaign” approaches to public diplomacy at the Foreign & Commonwealth Office. The three case studies are the visit of Pope Benedict XVI to the United Kingdom, the marriage of HRH Prince William to Kate Middleton, and Queen Elizabeth II’s visit to Ireland. The analytical framework seeks to situate strate

The United States has historically held a unique, complex, and dynamic relationship to international geopolitical space. From the Monroe Doctrine to Cold War demarcations such as containment and détente, the United States has sought to define its geopolitical position in relation to other nations through narratives which have served as popular reference points for interpreting shifts in internatio

The effectiveness of agri-environment schemes (AES) such as wildflower strips in promoting farmland biodiversity has been relatively well studied. Their effects on biodiversity-mediated ecosystem services, such as natural pest control, in contrast, remain poorly evaluated and their consequences on crop yield largely unexplored. We assessed the effect of sown, species-rich, perennial wildflower str

In this article, we address and challenge Nothhaft’s (2016) recent attempt to revive the field of strategic communication through an application of approaches and principles from the studies of the human mind. Instead of an indiscriminate import of a natural science perspective, we argue that the shortcomings of the field are dealt with more adequately by recognizing and embracing the immense comp

Purpose: The purpose of this concept study was to investigate the possibility of automatic mean arterial pressure (MAP) regulation in a porcine heart-beating brain death (BD) model. Hemodynamic stability of BD donors is necessary for maintaining acceptable quality of donated organs for transplantation. Manual stabilization is challenging, due to the lack of vasomotor function in BD donors. Closed-

In this article, we address the problem of automatic age estimation of web users based on their posts. Most studies on age identification treat the issue as a classification problem. Instead of following an age category classification approach, we investigate the appropriateness of several regression algorithms on the task of age estimation. We evaluate a number of well-known and widely used machi

In the present article, we address the problem of automatic gender classification of web blog authors. More specifically, we employ eight widely used machine learning algorithms, in order to study the effectiveness of feature selection on improving the accuracy of gender classification. The feature ranking is performed over a set of statistical, part-of-speech tagging and language model features.

This book is dedicated to professor emeritus Bengt Forkman (Nuclear Physics, Lund University) who in 1979 took the initiative to arrange an environmental radioactivity research program for the Ymer-80 expedition. He engaged his old friend Bertil Persson whom he during the 1960th inspired to university studies in Lund and who 1980 has been promoted to professor of Radioecology at the Swedish Univer

Scholars and policy makers consider knowledge accumulation a major driver of growth and regional development. During the past two decades, the geography of innovation literature has provided a rich and detailed account of the underlying processes of regional knowledge production. More recently, a growing body of empirical literature has analysed the specific knowledge bases of regions and their ev

Background Childhood aggressive antisocial behavior (CD) is one of the strongest predictors of mental health problems and criminal behavior in adulthood. The aims of this study were to describe personality profiles in children with CD, and to determine the strength of association between defined neurodevelopmental symptoms, dimensions of character maturity and CD. Methods A sample of 1886 children