We consider the problem of stochastic control under power constraints. Problems such as linear quadratic optimal control with information constraints are instances of the problem considered. The calculations of the optimal control law can be done off-line as in the classical linear quadratic Gaussian control theory using dynamic programming, which turns out to be a special case of the new theory d

Co-citation analysis has been widely accepted as the foremost method for bibliometric mapping of research fields, whereas analyses based on keywords has been discussed, without gaining any overall acceptance. There is, however advantages with keywords, such as being understandable by others than those immediately connected to the field analyzed. This study aims at testing the relation between keyw

The increasing use of unlicensed frequency bands for radio communications calls for investigations of the interference between coexisting radio networks. The wide variety of radio interfaces makes such investigations hard to perform. In this paper we present a general framework for the analysis of heterogeneous interfering radio networks, where the networks are modeled with individual properties f

This thesis is a study of the theology of canon law in the Pedalion. The Pedalion (Πηδάλιον: ”rudder”) is a famous Greek Orthodox collection of canon law. It was printed in Leipzig 1800 by permission of the Holy Synod of the Ecumenical Patriarchate. St. Nikodemos Hagioreites and Agapios Leonardos were the authors. What is the theoretical foundation of canon law according to the Pedalion? How is th

As an historian studying the Swedish migration to America, I often come across the notion that the Swedish sources on the subject are excellent and that we who studies swedish migration are fortunate because of this. It is generally thought that 1.2 million swedes emigrated to America and that about 200.000 people returned to Sweden, but is this true? In my ongoing study of the return migration

This paper develops a generalization of the balanced truncation algorithm applicable to discrete-time Markov jump linear systems. The approximation error, which is captured by means of the stochastic L2 gain, is bounded from above by twice the sum of singular numbers associated to the truncated states of each mode.

Popular Abstract in Swedish Bostäder och service svarar för hela 36 procent av Sveriges totala energianvändning, av detta står bostäder och lokaler för ungefär 86 procent. Den svenska riksdagen har antaget EU: s klimat-och energipolitiska mål som skall nås till 2020, som kallas "20-20-20"-målen. EU:s 20-20-20-mål innebär att vi ska minska klimat¬påverkan med 20 procent, uppnå 20 procent förnybar eUsing energy at low-quality levels opens up new possibilities for low-energy houses. Low-quality energy can be heat at a temperature that is close to that of its surrounding, and can be used, for example, to pre-heat ventilation air or domestic hot water. Pre-heating the incoming outdoor air reduces the need to heat ventilation and reduces the need for high-quality energy such as electricity or he

The paper presents a revised definition of the mean effective gain (MEG) of terminal antennas. It now includes the gain pattern of both the transmitting (BS) and receiving (MS) antennas, the path gain matrix as well as the joint angular power distributions of the two orthogonal polarizations at both ends. A closed form equation is provided followed by the analysis of some special cases and their p