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Kirjasto - Tampereen teknillinen yliopisto

Browsing Research publications by Title

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  • Juuti, Petri S.; Katko, Tapio S.; Louekari, Sami M.; Rajala, Riikka P. (2010)
  • Kontio, J.; Husu, H.; Simonen, J.; Huttunen, M.; Tommila, J.; Pessa, M.; Kauranen, M. (2009)
    We show that nanoimprint lithography combined with electron-beam evaporation provides a cost-efficient, rapid, and reproducible method to fabricate conical nanostructures with very sharp tips on flat surfaces in high ...
  • Huttunen, Mikko; Bautista, Godofredo; Decker, Manuel; Linden, Stefan; Wegener, Martin; Kauranen, Martti (2011)
    We perform second-harmonic generation (SHG) microscopy with circularly polarized (CP) light to measure chirality of individual twisted-cross gold nanodimers. The chiral signatures, based on different SHG response for the ...
  • Farhan, Muhammad; Yli-Harja, Olli; Niemistö, Antti (2012-11-22)
    A novel nonparametric concavity point analysis-based method for splitting clumps of convex objects in binary images is presented. The method is based on finding concavity point-pairs by using a variable-size rectangular ...
  • Mäki-Marttunen, Tuomo; Kesseli, Juha; Kauffman, Stuart; Yli-Harja, Olli; Nykter, Matti (2011)
    We study the complexity of network dynamics in a couple of very different model classes: The traditional random Boolean networks (RBN) and Frisch-Hasslacher-Pomeau lattice gas automata (FHP). For this we formulate the FHP ...
  • Syrjälä, Ville; Valkama, Mikko; Zou, Yaning; Tchamov, Nikolay N.; Rinne, Jukka (2011)
    This article addresses the signal distortion caused by receiver phase noise (PN) on OFDM waveforms in direct-conversion radio receivers. A closed-form solution for the observed signal-to-interference-plus-noise ratio (SINR) ...
  • Laamanen, Arto; Linjama, Matti; Vilenius, Matti (2007-05-21)
    Non-ideal on/off valves may cause coincidentally pressure peaks in digital hydraulics. The risk of pressure peaks depends on the coding scheme of the digital hydraulic valve system. Traditional Pulse Code Modulation (PCM) ...
  • Jääskeläinen, Pekka O.; de La Lama, Carlos S.; Huerta, Pablo; Takala, Jarmo (2010)
    OpenCL is a programming language standard which enables the programmer to express the application by structuring its computation as kernels. The OpenCL compiler is given the explicit freedom to parallelize the execution ...
  • Kultala, Heikki; Jääskeläinen, Pekka; Takala, Jarmo (2011)
    The core tool in Application-Specific Instruction Set Processor (ASIP) design toolsets is a retargetable compiler, which can generate efficient code to any processor developed with the toolset. Such a compiler must ...
  • Volkov, S.N.; Dolgaleva, Ksenia; Boyd, Robert W.; Jefimovs, Konstantins; Turunen, Jari; Svirko, Yuri; Canfield, Brian K.; Kauranen, Martti (2009)
    We prepare diffractive planar arrays of metal nanoparticles that are chiral because of either the shape of individual particles (“molecular” chirality) or the orientation of achiral particles in the array (“structural” ...
  • Räsänen, Esa; Blasi, Thomas; Borunda, Mario; Heller, Eric (2012-11-08)
    We present theory and calculations for coherent high-fidelity quantum control of many-particle states in semiconductor quantum wells. We show that coupling a two-electron double quantum dot to a terahertz optical source ...
  • Hellgren, Maria; Räsänen, Esa; Gross, E. K. U. (2013-07-19)
    We show that quantum optimal control theory (OCT) and time-dependent density-functional theory (TDDFT) can be combined to provide realistic femtosecond laser pulses for an enhanced ionization yield in few-electron systems. ...
  • Blasi, Thomas; Borunda, Mario F.; Räsänen, Esa; Heller, Eric J. (2013-06-13)
    We apply quantum optimal control theory to establish a local voltage-control scheme that operates in conjunction with the numerically exact solution of the time-dependent Schrödinger equation. The scheme is demonstrated ...
  • Borkowski, Jakub; Lähdekorpi, Panu; Isotalo, Tero; Lempiäinen, Jukka (2007)
    The aim of this paper is to evaluate the impact of selected topology planning aspects on performance of WCDMA cellular network and mobile positioning techniques. The assessment is based on field measurements and simulations. ...
  • Niemelä, Jarno; Isotalo, Tero; Lempiäinen, Jukka (2005)
    The impact of antenna downtilt on the performance of cellular WCDMA network has been studied by using a radio network planning tool. An optimum downtilt angle has been evaluated for numerous practical macrocellular site ...
  • Partio, Mari; Cramariuc, Bogdan; Gabbouj, Moncef (2007)
    We present a novel ordinal co-occurrence matrix framework for the purpose of content-based texture retrieval. Several particularizations of the framework will be derived and tested for retrieval purposes. Features obtained ...
  • Martikainen, Simo; Piché, Robert; Ali-Löytty, Simo (2012)
    A new method to predict a GPS satellite’s clock offset is presented. The motivation for this work is to improve the time to first fix and make the clock offset prediction less sensitive to outliers. The proposed method is ...
  • Nurminen, Henri; Ristimäki, Anssi; Ali-Löytty, Simo; Piché, Robert (2013)
    We present a real-time particle filter for 2D and 3D hybrid indoor positioning. It uses wireless local area network (WLAN) based position measurements, step and turn detection from a hand-held inertial sensor unit, floor ...
  • Husu, Hannu; Mäkitalo, Jouni; Laukkanen, Janne; Kuittinen, Markku; Kauranen, Martti (2010)
    We present an extensive experimental and theoretical study of the particle plasmon resonances of L-shaped gold nanoparticles. For the small characteristic size of the particles, we observe more higher-order resonances than ...
  • Järvenpää, Heini; Mäkinen, Saku; Seppänen, Marko (2011)
    The use of multiple indicators in analyzing technological developments and exploiting the increasing availability of information has been recommended widely in order to decrease systematic biases between single measures. ...