Bandwidth efficiency is a key objective in the design of a digital communication system. Traditionally it is accomplished by increasing the constellation size of the signaling system. In this thesis alternative techniques are studied. Because the communication channel is continuous, so must the actual time signals be. Therefore the construction of the continuous signals is included in the code des

The heat transferred to the turbine blade is substantially increased as the turbine inlet temperature is increased. Cooling methods are therefore much needed for the turbine blades to ensure a long durability and safe operation. The blade tip region is exposed to the hot gas flows. A common way to cool the tip is to use serpentine passages with 180-deg turn under the blade tip cap taking advantage

Knowledge about the nature, processes and patterns of cascading effects, i.e. where infrastruc-ture dependencies lead to impacts propagating from one system to other systems, is essential in order to miti-gate and respond to crises that involve critical infrastructures and societal functions. This paper presents a method for systematic description of cascading effects in past event, to some extent

The citations of highly cited papers in the life sciences published in 1986 and 2000 was examined to determine the extent to which early impact predicts long term impact. Linear correlation between early and post-peak impact was found to be about 0.7

This paper presents theoretical and experimental results on observer-based impedance control. Impedance control is a technique for robot force control, which is often used to deal with geometric uncertainty. The aim of this technique is to obtain a dynamic relation between position and force in interaction similar to Newton's second law. Here the velocity is used to modify the damping of the imped

Scandoromani: Remnants of a Mixed Language is the first, comprehensive, international description of the language of the Swedish and Norwegian Romano, also labeled resande/reisende. The language, an official minority language in Sweden and Norway, has a history in Scandinavia going back to the early 16th century. A mixed language of Romani and Scandinavian, it is spoken today by a vanishingly smal

Based on a study of Swedish and Finnish industrial design consultancies (IDCs) we discuss how changes in industry have affected id-consultancies cope with growth, organizational and management issues. The traditional industrial designer worked in a small consultancy mainly with clients focusing on mass-produced products. The clients were basically domestic even if they operated worldwide. Investme

Societies of the early 21st century are composed of many intersecting cultures, defined by status as citizens or recent immigrants and other societal hierarchies. Past-oriented segments of state populations decry the loss of essentialized national identities. What is lacking in this set-up of the debate is the young generation. This volume brings together European and Canadian studies in sociology

The development of a common data base system for wastewater treatment operating data evaluation is discussed. Data records from wastewater treatment plants which have been converted into standard files in a common data base are used as a case study. Advanced programs for data analysis and simulation have been used to evaluate the data in the common data base. The paper discusses software standardi

Popular Abstract in Swedish Bioprocesser är samlingsnamnet på alla de system där man utnyttjar någon biologiskt aktiv komponent (biokatalysator) för att utföra (katalysera) en bestämd reaktion. I den här avhandlingen används ordet bioprocess för mikrobiologiska odlingsprocesser, och biokatalysatorn är då en mikroorganism. Man kan utnyttja mikroorganismer för att producera t.ex. enzymer (för miljövThe control of cultivation conditions and its influence on growth and production have been investigated. The use of fed-batch processes have been demonstrated for several cultivation systems and so has the use of different control signals in these systems. Fed-batch cultivation of Pseudomonas cepacia with on-line measurement and control of the growth rate limiting (toxic) substrate, sodium-salicy