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Selataan Dissertations julkaisuajan mukaan

Selataan Dissertations julkaisuajan mukaan

Näkyvissä 1-20 / 425

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Hypermedia Learning Environment for Mathematics

Multisilta, Jari (1996-06-14)

This thesis describes the design, implementation and use of a software package for hypermedia based learning on mathematical sciences. The software package integrates hypertext, computer-aided exercises, graphics, videos ...
Several Approaches to Cost Function Adaptation and Phase Approximation

Rusu, Corneliu (2000-02-04)

In the particular application of data echo cancellation we have a signal environment which violates basic assumptions inherent in adaptive estimation theory. First, the training signal is noise dominated (by the far end ...
Diagnostic Properties of Exercise Electrocardiographic Leads and Variables in the Detection of Coronary Artery Disease

Viik, Jari (2000-10-06)

In Finland, coronary artery disease (CAD) is the main cause of death among the middle-aged population. The exercise electrocardiographic (ECG) test is the most widely used non-invasive method of assessing CAD. However, ...
Dithering in Analogue-to-Digital Conversion

Aumala, Olli (2001-05-07)

This study analyses properties of the analogue-to-digital converter, which is very central in modern measurement equipment. The work is mainly theoretical, and the theoretical models were verified partly with experimental ...
On-line Voltage Stability Assessment of Power System - An Approach of Black-box Modelling

Repo, Sami (2001-10-19)

The management of power systems has become more difficult than earlier because power systems are operated closer to security limits, environmental constraints restrict the expansion of transmission network, the need for ...
Aspects of Continuous Behaviour - Design of Real-Time Reactive Systems in DisCo

Katara, Mika (2001-11-23)

Reactive systems, i.e. those in constant interaction with their environments, are often distributed entailing concurrency. Real time is a continuous quantity used to model timing constraints of reactive systems. Developing ...
Advanced I/Q Signal Processing for Wideband Receivers: Models and Algorithms

Valkama, Mikko (2001-11-23)

In-phase/quadrature (I/Q) signal processing is a fundamental tool in processing of bandpass signals. Especially in radio transceivers, it offers an effective solution to the inherent image signal problem without exhaustive ...
On Design and Implementation of Fingerprint-Based Biometric Systems

Tico, Marius (2001-11-30)

Fingerprints are graphical flow-like ridges present on human fingers. The formation of the fingerprints depends on the initial conditions of the embryonic development, and their ridge pattern is unchanged throughout the ...
The Assessment of Ergonomics and Usability of Consumer Products - Four Case Studies on Hand Tools

Päivinen, Minna (2002-05-24)

Manufacturers are seeking solutions for gaining an advantage over their competitors. Improvement of ergonomics and usability of consumer products can give increased market value and has a major impact on the users safety ...
Synchronization and Multipath Delay Estimation Algorithms for Digital Receivers

Hamila, Ridha (2002-06-19)

This thesis considers the development of synchronization and signal processing techniques for digital communication receivers, which is greatly influenced by the digital revolution of electronic systems. Eventhough ...
User and Platform Adaptation in Web-based Learning Environments

Ketamo, Harri (2002-08-14)

The aim of this thesis is to provide new empirical knowledge and case solutions to the domain of user and platform adaptive learning environments. The studies of the thesis were based on reviews of literature, technological ...
Visible Vertical-Cavity Light Emitters

Saarinen, Mika (2002-09-27)

This Thesis is concerned with resonant cavity light-emitting diodes (RCLEDs) and vertical-cavity surface-emitting lasers (VCSELs), which oscillate in the visible spectral range. It presents results obtained from studies ...
Design of Quality of Service Support for Wireless Local Area Networks

Hännikäinen, Marko (2002-11-01)

Wireless Local Area Networks (WLAN) operating on unlicensed radio frequency bands are emerging in a number of application areas. They both extend and replace traditional wired LANs. Wireless Personal Area Network (WPAN) ...
Control of Variable Speed Wind Turbines

Vihriälä, Harri (2002-11-15)

A variable speed, fixed pitch wind turbine is difficult to control: it is stable at below rated wind speeds but becomes unstable as power output is limited by stalling the turbine at above rated wind speeds. This turbine ...
Development of a Parallel Composite-Joint Piezohydraulic Micromanipulator

Kallio, Pasi (2002-12-19)

This thesis discusses the development of a novel parallel composite-joint piezohydraulic micromanipulator. The micromanipulator is composed of three prismatic actuators connected in parallel. The actuators are new ...
Development of a Vacuum Extraction Based Emergency Response Method and Equipment for Recovering Fuel Spills from Underground

Halmemies, Sakari (2003-02-23)

The most common type of accident is a fuel spill on the ground, which, depending on the circumstances can cause serious pollution of soil and groundwater. When fuel has seeped into the soil, there are not many effective ...
Cost Management in Firm Networks

Kulmala, Harri I. (2003-05-22)

This research introduces the present state, development practices, emerging problems, and major challenges in the areas of cost accounting and cost management in networked firms. The research links two separately studied ...
Technical Management Of The Electric And Magnetic Fields in Electric Power System

Keikko, Tommi (2003-06-06)

Electric and magnetic fields from power systems have become an important issue. The reasons for this are public concern about the possible health risks the fields may cause and disturbances caused by the fields. The aim ...
Design, Analysis and Generalization of Polynomial Predictive Filters

Koppinen, Konsta (2003-10-02)

New methods for the design, analysis and generalization of polynomial predictive filters (polynomial predictors for short) are developed in this thesis. Polynomial predictors are a subclass of linear mathematical filters, ...
Global Optimization-Based Deformable Meshes for Surface Extraction from Medical Images

Tohka, Jussi (2003-10-03)

This thesis deals with surface extraction from noisy volumetric images, which is a common problem in medical image analysis. Due to noise, the use of a-priori information about surface topology and shape is necessary for ...