Satellite-based radionavigation systems provide accurate and reliable positioning and navigation whenever the satellite-to-receiver path is free from obstacles. In personal navigation this condition cannot always be ...
This thesis studies issues in dynamic analysis and design of interconnected DC-DC power supply systems. The history of the dynamic analysis dates back to the 1970s, when the modeling method for an individual switched-mode ...
This thesis provides a comprehensive study of the problems in single-phase grid-connected photovoltaic (PV) systems. The main objective is to provide an explicit formulation of the dynamic properties of the power-electronic-based ...
Power electronics (PE) plays an important role in grid integration of photovoltaic (PV) power systems. According to present knowledge, the PV modules are said to be the most reliable component and PE is said to possess ...
Companies are facing increasing requirements for adaptivity and flexibility but also for efficiency and cost-effectiveness. Information technology has become more complex and often limits a company s ability to change. IT ...
Context dependent access is becoming the most relevant means of retrieving information from both the traditional and mobile Web. The user, location, device and time can be regarded as dimensions of the context. For example, ...
Nykyään puhutaan paljon kasvuyritysten tärkeydestä ja niiden merkityksestä Suomen kansantalouteen. Myös yritysten kasvun kiihdyttämiseksi ja kasvuyritysten määrän lisäämiseksi mietitään jatkuvasti uusia kannustimia ja ...
Väitöskirjassani Kaupunkia etsimässä – Eliel Saarinen Amerikassa 1923–1950 kuvailen Eliel Saarisen Amerikan aikaa osana Suomen ajan töiden jatkumoa. Tutkimuksen näkökulma painottuu kaupunkisuunnitteluun. Saarisen Suomessa ...
Implementing knowledgeable applications benefits from the ability to model problems on the knowledge level. In practice, this usually means engagement with the logical description of problems. However, when (crisp) logic ...
Tutkimuksen kohteena on kunnallisen päätöksenteon valmistelutyö. Tutkimuksessa tarkastellaan tieto- ja kommunikaatioprosessien merkitystä kunnallisen päätöksenteon valmistelutyön tehokkuuden ja luovuuden yhteensovittamisessa. ...
Väitöstutkimuksen tavoitteena on luoda konstruktio suorituskyvyn johtamisen kypsyyden arvioimiseen organisaatioissa. Konstruktio rakentuu väitöstutkimuksessa tunnistettujen komponenttien sekä kypsyystasojen ympärille. ...
This thesis explores a new type of gain medium for fiber lasers and amplifiers, active tapered double-clad fibers (TDCF), and describes their distinct properties, design, and applications. The TDCF technology is based on ...
Modern industrial processes are increasingly complex and managed with limited personnel resources. In order to ease the task of process management new networked communication and monitoring technologies have been developed ...
A very important component of cells is the cell membrane separating the contents of a cell from the outside world. The cell membrane contains membrane proteins which, for example, regulate permeation of molecules through ...
A scalar light field is any stationary monochromatic wave in the visible spectrum which propagates in an isotropic, homogeneous, non-dispersive and non-magnetic medium and thus obeys the Helmholtz wave equation. This thesis ...
Model-Driven Engineering (MDE) is a software development paradigm that is proposed to increase the efficiency of software development. To realize this goal, the design of the software application and the design-time decisions ...
This thesis is dedicated to demosaicing and deblurring problems in digital image processing and their solution exploiting signal adaptive filtering. In particular, we use filtering based on the local polynomial approximation ...
Partly due to the increase in global competition, the nature of manufacturing paradigms in Europe has been undergoing continuous change in recent decades. Pressures from the market are forcing companies to evolve into new ...
Magnetic resonance imaging (MRI) is a medical imaging method used mainly for imaging soft tissue, such as the brain. It has various advantages, such as the noninvasive and nonionizing technique used; high contrast and ...
The ability to learn and create new knowledge is an essential factor in creating an innovative working environment. However, concepts related to learning and knowledge creation are often very abstract in nature. Therefore, ...