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Tampere, Finland

Tampere University of Technology ) is Finland's second-largest university in engineering science. The university is located in Hervanta, a suburb of Tampere.The university's statutory duty is to pursue research and give the highest education in its field. The research, conducted by some 1,800 staff and faculty members, mostly focuses on applied science and often has close ties to many different companies . Located next to the university campus is a Technology Centre Hermia, including a large Nokia research facility. The yearly budget of the university is some 147 million euros. TUT is one of the only two Finnish universities which operate as foundation. Close to 50% of its budget is external funding. Wikipedia.

Liimatainen H.,Tampere University of Technology
IEEE Transactions on Intelligent Transportation Systems | Year: 2011

Driver behavior is one of the greatest factors determining fuel consumption and, thus, carbon dioxide emissions from a heavy-duty vehicle. The difference in fuel consumption can be up to 30%, depending on the driver. Education, monitoring, and feedback are ways of guiding drivers toward more fuel-efficient driver behavior. An incentive system related to fuel consumption is one way of giving feedback. The greatest challenge facing transportation companies with such incentive systems is fair measurement of the driver's fuel consumption. This paper focuses on that challenge. As a result of this paper, a method for utilizing fuel consumption data in an incentive system has been developed for the case company Tampere City Transport. Measurement of fuel consumption is based on groups, which are formed by runs with similar vehicles, routes, and time of day. The individual driver's average fuel consumption in a specific group is then compared with the average fuel consumption of all drivers in that specific group. © 2011 IEEE.

Saksala T.,Tampere University of Technology
International Journal for Numerical and Analytical Methods in Geomechanics | Year: 2011

This paper presents a numerical method for continuum modelling of the dynamic bit-rock interaction process in percussive drilling. The method includes a constitutive model based on a combination of the recent viscoplastic consistency model, the isotropic damage concept and a parabolic compression cap. The interaction between the drill bit and rock is modelled using contact mechanics by treating the bit as a rigid body. As the bit-rock interaction in percussive drilling is a transient event, the method is implemented in explicit dynamics FEM. The rock strength heterogeneity is characterized at the mesoscopic level statistically using the Weibull distribution. The bit-rock interaction is simulated under axisymmetric conditions using cylindrical and hemispherical buttons. The choice of the quite complex constitutive model accounting, e.g. for plastic compaction, viscoplastic shear and tensile failure along with induced damage and rate dependency is justified by numerical simulations. Moreover, the quasi-static and dynamic cases are compared in plane strain simulations. Finally, some results clarifying the discrepancy of opinions found in the literature concerning the side (lateral) crack formation are obtained. © 2010 John Wiley & Sons, Ltd.

Malmivuo J.,Tampere University of Technology
Brain Topography | Year: 2012

Since the detection of the first biomagnetic signals in 1963 there has been continuous discussion on the properties and relative merits of bioelectric and biomagnetic measurements. In this review article it is briefly discussed the early history of this controversy. Then the theory of the independence and interdependence of bioelectric and biomagnetic signals is explained, and a clinical study on ECG and MCG that strongly supports this theory is presented. The spatial resolutions of EEG and MEG are compared in detail, and the issue of the maximum number of electrodes in EEG is also discussed. Finally, some special properties of EEG and MEG methods are described. In brief, the conclusion is that EEG and MEG are only partially independent and their spatial resolutions are about the same. Recording both of them brings some additional information on the bioelectric activity of the brain. Thesetwo methods have certain unique properties that make either of them more beneficial in certain applications. © 2011 Springer Science+Business Media, LLC.

Raiha O.,Tampere University of Technology
Computer Science Review | Year: 2010

This survey investigates search-based approaches to software design. The basics of the most popular meta-heuristic algorithms are presented as background to the search-based viewpoint. Software design is considered from a wide viewpoint, including topics that can also be categorized as software maintenance or re-engineering. Search-based approaches have been used in research from the high architecture design level to software clustering and finally software refactoring. Enhancing and predicting software quality with search-based methods is also taken into account as a part of the design process. The background for the underlying software engineering problems is discussed, after which search-based approaches are presented. Summarizing remarks and tables collecting the fundamental issues of approaches for each type of problem are given. The choices regarding critical decisions, such as representation and fitness function, when used in meta-heuristic search algorithms, are emphasized and discussed in detail. Ideas for future research directions are also given. © 2010 Elsevier Inc.

Dudley J.M.,University of Franche Comte | Dias F.,University College Dublin | Erkintalo M.,University of Auckland | Genty G.,Tampere University of Technology
Nature Photonics | Year: 2014

Optical rogue waves are rare, extreme fluctuations in the value of an optical field. The term 'optical rogue wave' was first used in the context of an analogy between pulse propagation in an optical fibre and wave group propagation on deep water, but has since been generalized to describe many other processes in optics. This Review provides an overview of the field, concentrating primarily on propagation in optical fibre systems that exhibit nonlinear breather and soliton dynamics, but also discussing other optical systems in which extreme events have been reported. Although statistical features such as long-tailed probability distributions are often considered to be the defining feature of rogue waves, we emphasize the underlying physical processes that drive the appearance of extreme optical structures. © 2014 Macmillan Publishers Limited. All rights reserved.

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