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Design of PID controllers for decoupled multi-variable systems

A PID design method is presented. The work done is part of anattempt to find an automatic tuning algorithm for two times two systems inthe process industry. The method tries to minimize the impact of load disturbances. The method was mainly developed because previous designmethods with the same objectives could not handle the processesobtained in decoupled systems.

The Indiana Experiment: Investigating the Role of Anticipation and Attention in a Dynamic Environment

We investigating the role of anticipation and attention in a dynamic environment in a number of large scale simulations of an agent that tries to negotiate a number of gates that continuously open and close. In particular we have looked at learning mechanisms that can predict the future positions of the gates and control strategies that will allow the agent to pass through the gates unharmed. The

Quasi-Cyclic Asymptotically Regular LDPC Codes

Families of asymptotically regular LDPC block code ensembles can be formed by terminating (J, K)-regular protograph-based LDPC convolutional codes. By varying the termination length, we obtain a large selection of LDPC block code ensembles with varying code rates, minimum distance that grows linearly with block length, and capacity approaching iterative decoding thresholds, despite the fact that t

Heat Pumps: A Comparative Assessment of Innovation and Diffusion Policies in Sweden and Switzerland

The development and introduction of heat pumps provides an interesting illustration of policy influence and effectiveness in relation to energy technology innovation. Heat pumps have been supported by several countries since the 1970s as a strategy to improve energy efficiency, support energy security, reduce environmental degradation, and combat climate change. Sweden and Switzerland have been es

Intercultural tensions and creativity in music.

Confrontations, break-up, dissociation , the Other – all of these concepts could be seen as troubling, disturbing or problematic, most certainly when the context is music education in a globalised world. In this chapter however, these concepts of instability and insecurity are used to discuss the potential value of tensions and disruption in practising creative music education.

Ion specific protein assembly and hydrophobic surface forces

Large anions are attracted to hydrophobic surfaces while smaller, well solvated ions are repelled. Using a combination of explicit solvent and continuum model simulations we show that this leads to significant ion-specific protein-protein interactions due to hydrophobic patches on the protein surfaces. In solutions of NaI and NaCl we calculate the potentials of mean force and find that the resulti

An experimental evaluation of inspection and testing for detection of design faults

The two most common strategies for verification and validation, inspection and testing, are in a controlled experiment evaluated in terms of their fault detection capabilities. These two techniques are in the previous work compared applied to code. In order to compare the efficiency and effectiveness of these techniques on a higher abstraction level than code, this experiment investigates inspecti

Low-level analysis of microarray data

This thesis consists of an extensive introduction followed by seven papers (A-F) on low-level analysis of microarray data. Focus is on calibration and normalization of observed data. The introduction gives a brief background of the microarray technology and its applications in order for anyone not familiar with the field to read the thesis. Formal definitions of calibration and normalization are g

Thermal analysis of plate condensers in presence of flow maldistribution using refrigerant R134a

Flow maldistribution in plate heat exchangers causes deterioration of both thermal and hydraulic performance. The situation becomes more complicated for two phase flows during condensation where uneven distribution of the liquid to the channels reduces heat transfer due to high liquid flooding. The present study evaluates the thermal performance of falling film plate condensers with flow maldistri

Analytical Calculation of the Ra Surface Roughness during Turning

In this article an analytical equation for calculating the theoretical arithmetic mean surface roughness, Ra, in the case of turning using a tool with a circular nose radius is presented. The calculated Ra-values are verified by experimental results obtained from machining of 7 different workpiece materials. For all measuring series results were obtained that were either better or worse than the t

Performance and implementation of routing and wireless transport layer connections in micro mobility Ad hoc networks

In mobile ad hoc networks wireless nodes communicate over multi hop links and are capable of movement. This paper evaluates a solution that provide these networks with Internet Access and the capability to roam between different access points. Design and implemenation consideration are discussed that focus on behaviour and criterias for performing handover. Simulation result show that the main fac