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Kirjasto - Tampereen teknillinen yliopisto

Browsing Research publications by Issue Date

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  • Intosalmi, Jukka; Manninen, Tiina; Hituri, Katri; Ruohonen, Keijo; Linne, Marja-Leena (2008)
    The time evolution of chemical systems is traditionally modeled using deterministic ordinary differential equations. Chemical reactions, however, are random in nature, and the deterministic approach is valid only for a ...
  • Hituri, Katri; Achard, Pablo; Wils, Stefan; Linne, Marja-Leena; De Schutter, Erik (2008)
    Transient rises in cytosolic calcium concentration play a crucial role in initiating long-term depression (LTD) of synaptic activity. Calcium release from endoplasmic reticulum is particularly important in LTD. In Purkinje ...
  • Aho, Timo; Elomaa, Tapio; Kujala, Jussi (2008)
    Access requests to keys stored into a data structure often exhibit locality of reference in practice. Such a regularity can be modeled, e.g., by working sets. In this paper we study to what extent can the existence of ...
  • Åström, Jan A.; Kumar, P.B.Sunil; Vattulainen, Ilpo; Karttunen, Mikko (2008)
    Actin filament networks enable the cytoskeleton to adjust to internal and external forcing. These dynamic networks can adapt to changes by dynamically adjusting their cross-links. Here, we model actin filaments as cross-linked ...
  • Li, Jin; Gabbouj, Moncef; Takala, Jarmo (2008)
    The two-dimensional discrete cosine transform (2-D DCT) and its subsequent quantization are widely used in standard video encoders. However, since most DCT coefficients become zeros after quantization, a number of redundant ...
  • Isotalo, Tero; Lempiäinen, Jukka; Niemelä, Jarno (2008)
    The aim of this paper is to show the special characteristics of the indoor environment related to radio propagation and furthermore to radio network planning. The aspects of the radio network planning are highlighted ...
  • Canfield, Brian K.; Husu, Hannu; Kontio, Juha; Viheriälä, Jukka; Rytkönen, Tuomo; Niemi, Tapio; Chandler, Eric; Hrin, Alex; Squier, Jeff A.; Kauranen, Martti (2008)
    We use second- and third-harmonic-generation microscopy to address the tensorial nonlinear responses of individual particles in an array of cylindrical gold nanodots. The responses in both orders exhibit widely-variable, ...
  • Kujala, Sami; Canfield, Brian K.; Kauranen, Martti; Svirko, Yuri; Turunen, Jari (2008)
    We present a multipolar tensor analysis of second-harmonic radiation from arrays of noncentrosymmetric L-shaped gold nanoparticles. Our approach is based on the fundamental differences in the radiative properties of electric ...
  • Husu, Hannu; Canfield, Brian K.; Laukkanen, Janne; Bai, Benfeng; Kuittinen, Markku; Turunen, Jari; Kauranen, Martti (2008)
    Second-harmonic generation from T-shaped gold nanodimers with nanogaps has different efficiencies for left- and right-hand circularly polarized fundamental light. The difference arises from the chiral symmetry breaking of ...
  • Dias, Cristiano L.; Ala-Nissilä, Tapio; Karttunen, Mikko; Vattulainen, Ilpo; Grant, Martin (2008)
    We elucidate the mechanism of cold denaturation through constant-pressure simulations for a model of hydrophobic molecules in an explicit solvent. We find that the temperature dependence of the hydrophobic effect induces, ...
  • Aho, Timo; Elomaa, Tapio; Kujala, Jussi (2008)
    We propose a well-founded method of ranking a pool of m trained classifiers by their suitability for the current input of n instances. It can be used when dynamically selecting a single classifier as well as in weighting ...
  • Juuti, Petri; Katko, Tapio; Rajala, Riikka (2008)
  • Syrjälä, Ville; Valkama, Mikko (2009)
    This paper presents a new way to address and mitigate sampling jitter in high-frequency bandpass-sampling OFDM radio receivers. Baseband model for mapping the sampling jitter to certain type of phase noise is first presented, ...
  • Ollila, Samuli O.H.; Risselada, Jelger H.; Louhivuori, Martti; Lindahl, Erik; Vattulainen, Ilpo; Marrink, Siewert J. (2009)
    We calculate full 3D pressure fields for inhomogeneous nanoscale systems using molecular dynamics simulation data. The fields represent systems with increasing level of complexity, ranging from semivesicles and vesicles ...
  • Syrjälä, Ville; Valkama, Mikko (2009)
    The sampling jitter is particularly problematic in systems where high-frequency signals are sampled. This paper addresses the sampling jitter estimation and cancellation task in the direct RF sub-sampling type radio ...
  • Syrjälä, Ville; Valkama, Mikko; Tchamov, Nikolay N.; Rinne, Jukka (2009)
    This paper addresses the analysis and mitigation of the signal distortion caused by oscillator phase noise (PN) in OFDM communications systems. Two new PN mitigation techniques are proposed, especially targeted for reducing ...
  • Murtola, Teemu; Karttunen, Mikko; Vattulainen, Ilpo (2009)
    We present a two-dimensional coarse-grained (CG) model for a lipid membrane composed of phospholipids and cholesterol. The effective CG interactions are determined using radial distribution functions (RDFs) from atom-scale ...
  • 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 ...
  • Jääskeläinen, Kaija (2009)
  • Sanchez de la Lama, Carlos; Jääskeläinen, Pekka; Takala, Jarmo (2009)
    Graphics processing is an application area with high level of parallelism at the data level and at the task level. Therefore, graphics processing units (GPU) are often implemented as multiprocessing systems with high ...