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Wyszukujesz frazę "Łukasiak, P." wg kryterium: Autor


Wyświetlanie 1-5 z 5
Tytuł:
New machine learning methods for prediction of protein secondary structures
Autorzy:
Błażewicz, J.
Łukasiak, P.
Wilk, S.
Powiązania:
https://bibliotekanauki.pl/articles/969728.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
machine learning
prediction of protein structures
LAD
LEM2
MODLEM
Opis:
The first and probably the most important step in predicting the tertiary structure of proteins from its primary structure is to predict as many as possible secondary structures in a protein chain. Secondary structure prediction problem has been known for almost a quarter of century. In this paper, new machine learning methods such as LAD, LEM2, and MODLEM have been used for secondary protein structure prediction with the aim to choose the best among them which will be later parallelized in order to handle a huge amount of data sets.
Źródło:
Control and Cybernetics; 2007, 36, 1; 183-201
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Building the library of RNA 3D nucleotide conformations using the clustering approach
Autorzy:
Zok, T.
Antczak, M.
Riedel, M.
Nebel, D.
Villmann, T.
Lukasiak, P.
Blazewicz, J.
Szachniuk, M.
Powiązania:
https://bibliotekanauki.pl/articles/329744.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
RNA nucleotides
conformer library
torsion angles
clustering
neural gas
Opis:
An increasing number of known RNA 3D structures contributes to the recognition of various RNA families and identification of their features. These tasks are based on an analysis of RNA conformations conducted at different levels of detail. On the other hand, the knowledge of native nucleotide conformations is crucial for structure prediction and understanding of RNA folding. However, this knowledge is stored in structural databases in a rather distributed form. Therefore, only automated methods for sampling the space of RNA structures can reveal plausible conformational representatives useful for further analysis. Here, we present a machine learning-based approach to inspect the dataset of RNA three-dimensional structures and to create a library of nucleotide conformers. A median neural gas algorithm is applied to cluster nucleotide structures upon their trigonometric description. The clustering procedure is two-stage: (i) backbone- and (ii) ribose-driven. We show the resulting library that contains RNA nucleotide representatives over the entire data, and we evaluate its quality by computing normal distribution measures and average RMSD between data points as well as the prototype within each cluster.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2015, 25, 3; 689-700
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charge-pumping characterization of FILOX vertical MOSFETs
Autorzy:
Głuszko, G.
Łukasiak, L.
Ashburn, P.
Powiązania:
https://bibliotekanauki.pl/articles/308623.pdf
Data publikacji:
2007
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
charge-pumping
FILOX
interface traps
MOSFET
vertical MOSFET
Opis:
This paper presents for the first time the results of charge-pumping (CP) measurements of FILOX vertical transistors. The aim of these measurements is to provide information on the density of interface traps at the Si-SiO2 interface fabricated in a non-standard process. Flat-band and threshold voltage, as well as density of interface traps are determined. Good agreement between threshold-voltage values obtained from CP and I-V measurements is observed.
Źródło:
Journal of Telecommunications and Information Technology; 2007, 3; 73-77
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Deep Level Studies in Zn$\text{}_{1-x}$Mg$\text{}_{x}$Se Layers Grown by MBE
Autorzy:
Płachetko, S.
Ząbik, G.
Łukasiak, Z.
Borowski, P.
Bała, W.
Powiązania:
https://bibliotekanauki.pl/articles/1992065.pdf
Data publikacji:
1998-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.55.Eq
72.80.Ey
Opis:
The deep levels present in semiconducting Zn$\text{}_{1-x}$Mg$\text{}_{x}$Se (0 ≤ x ≤ 0.4) were investigated by means of deep level transient spectroscopy, photocapacitance transient and thermally stimulated depolarization. The thermal activation energy levels estimated from the deep level transient spectroscopy measurements are: E$\text{}_{T1}$=0.28 eV and E$\text{}_{T2}$=0.56 eV. For the Zn$\text{}_{1-x}$Mg$\text{}_{x}$Se epilayers thermally stimulated depolarization curves consist of four overlapping peaks: 227.4 K, 243.6 K, 265.7 K, and 285.0 K.
Źródło:
Acta Physica Polonica A; 1998, 94, 3; 483-486
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charge-pumping characterization of SOI devices fabricated by means of wafer bonding over pre-patterned cavities
Autorzy:
Głuszko, G.
Łukasiak, L.
Kilchytska, V.
Chung, T. M.
Olbrechts, B.
Flandrie, D.
Raskin, J. P.
Powiązania:
https://bibliotekanauki.pl/articles/308669.pdf
Data publikacji:
2007
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
charge-pumping
electrical characterization
interface traps
SOI
water bonding
Si layer transfer
Opis:
The quality of the silicon-buried oxide bonded interface of SOI devices created by thin Si film transfer and bonding over pre-patterned cavities, aiming at fabrication of DG and SON MOSFETs, is studied by means of chargepumping (CP) measurements. It is demonstrated that thanks to the chemical activation step, the quality of the bonded interface is remarkably good. Good agreement between values of front-interface threshold voltage determined from CP and I-V measurements is obtained.
Źródło:
Journal of Telecommunications and Information Technology; 2007, 3; 61-66
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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