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    Wyświetlanie 1-9 z 9
    Tytuł:
    E-Science Platform
    Autorzy:
    Cader, A.
    Goetzen, P.
    Przybyszewski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/108738.pdf
    Data publikacji:
    2009
    Wydawca:
    Społeczna Akademia Nauk w Łodzi
    Tematy:
    e-Science Platform
    science management
    tools for science
    Opis:
    We introduced the concept and setting up of a new platform to support research, which was worked out in the Information Technology Institute, Academy of Management in Lodz. The platform is the subject of two projects developed in the ITI. The role of e-Science Platform (ESP) is to support distributed research teams activities, whose members work on the same subject but in separated research centers. The ESP provides the research teams tools for effective communication, storage and management of data and information generated during the research, within the so-called the Virtual Research Area (VRA). Many other useful tools for the researchers were also presented. An important element of the project is to initiate and stimulate research, and to give organizational and legal assistance from specialized units operating within the framework of ESP modules.
    Źródło:
    Journal of Applied Computer Science Methods; 2009, 1 No. 1; 7-23
    1689-9636
    Pojawia się w:
    Journal of Applied Computer Science Methods
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of environmentally-friendly flame retardants on fire resistance and mechanical properties of rigid polyurethane foam
    Wpływ przyjaznych środowisku antypirenów na ognioodporność i właściwości mechaniczne sztywnych pianek poliuretanowych
    Autorzy:
    Czech-Polak, J.
    Przybyszewski, B.
    Heneczkowski, M.
    Czulak, A.
    Gude, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/947009.pdf
    Data publikacji:
    2016
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
    Tematy:
    polyurethane foams
    flame retardants
    resistance to fire
    mechanical properties
    apparent density
    pianki poliuretanowe
    antypireny
    ognioodporność
    właściwości mechaniczne
    gęstość pozorna
    Opis:
    In this paper the new compositions of polyurethane foams with reduced flammability containing environmentally friendly flame retardants, such as ammonium polyphosphate, melamine pyrophosphate, triethyl phosphate, bentonite and expanded graphite obtained with long fiber injection (LFI) method have been presented. The effect of the addition of various flame retardants and their mixtures on the fire resistance and mechanical properties of the foams has been determined. An improvement in fire resistance of the modified polyurethane compositions has been observed. Manufactured polyurethane foams containing flame retardants have been classified as materials with flammability class V-0. The addition of flame retardants has not significantly deteriorated mechanical properties of the investigated materials.
    Metodą wtryskiwania długich włókien (LFI) otrzymano nowe kompozycje pianek poliuretanowych o ograniczonej palności, zawierające przyjazne środowisku środki zmniejszające palność, takie jak: polifosforan amonu, pirofosforan melaminy, fosforan trietylu, bentonit i grafit ekspandowany. Określono wpływ dodatku tych antypirenów i ich mieszanin na ognioodporność oraz właściwości mechaniczne pianek. W porównaniu z pianką poliuretanową bez dodatków, wszystkie modyfikowane kompozycje poliuretanowe wykazały poprawę ognioodporności i zostały sklasyfikowane jako materiały niepalne klasy V-0. Stwierdzono także, że dodatek antypirenów nie spowodował istotnego pogorszenia właściwości mechanicznych badanych materiałów.
    Źródło:
    Polimery; 2016, 61, 2; 113-116
    0032-2725
    Pojawia się w:
    Polimery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charakterystyka chemiczna gleb i szaty roślinnej użytków zielonych w dolinie ujścia Warty
    Chemical characteristics of soils and vegetation cover of grasslands in the Warta estuary valley
    Autorzy:
    Czyż, H.
    Malinowski, R.
    Kitczak, T.
    Przybyszewski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1818957.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    charakterystyka chemiczna
    szata roślinna
    chemical characterisation
    vegetation
    Opis:
    Alluvial soils, which are found under the grasslands in the study area, are formed by erosive and sedimentation activity of waters from surface and river flows. These waters in river valleys, depending on the activity duration, flow speed and the frequency of overflows, determine the spatial distribution of sediments, the variability of their mechanical composition, as well as the layers thickness, the content of organic matter and the diversity of the lay of alluvial material areas. The mentioned factors have significant influence on the structure of soil profile and on the elements circulation in the trophic chain: soil – water – plant – animal – human. The aim of the study was the typological identification of soils in the floodplain of the Warta estuary valley, as well as the characterization of their basic physical and chemical features, with the special consideration to contamination with heavy metals. Moreover, the chemical content of the plant communities in the study area was described. The studies were conducted in the Warta valley on the passage between Świerkocin and Kłopotowo, on grasslands which are part of the right flood terrace of the valley, between the water surface and the levee (floodbank). Objects of varied habitat conditions and vegetation were isolated on the chosen area for the specific research .The characterization of soil conditions was performed according to the methods commonly used in pedology. Based on the description of morphological features of soil pits, the following subtypes of alluvial soils were distinguished: heavy humus, medium brown, actual medium, actual very light. Shaped plant communities were qualified to the following floristic types: Glyceria maxima, Phalaris arundinacea, Poa trivialis, Poa pratensis, Festuca rubra and Corynephorus cannescens. The analyzed soils were evaluated as rich in general forms: P, K, Mg, Ca, Na i S. Compacted soils were usually rich in absorbable phosphorus, the content of absorbable magnesium was from very low to high, while in very light soils the content of phosphorus and magnesium was law. Regardless of the soil type, the content of absorbable potassium found in all soil samples was very low. The analyzed soils had the natural content of heavy metals (Cd, Co, Cu, Ni, Pb, Zn, Mn, Fe), only in surface layer of heavy humus alluvial soil high contamination with cadmium and raised contamination with zinc were found. Varied content of macroelements was found in the grassland sward of the individual study points. The richest in P, K, Mg, Ca and Na was the community of rough bluegrass (Poa trivialis), located on river actual medium alluvial soil in the vicinity of embankment and subject to the constant flooding of Warta. The poorest in the analyzed heavy metals were the communities of Poa pratensis and Festuca rubra with Corynephorus cannescens on actual very light alluvial soil. Only in case of lead, high content in the sward of Phalaris arundinacea formed on actual medium alluvial soil near the water surface was found. As regards other heavy metals there was no excess of their content in the grassland sward of the studied area.
    Źródło:
    Rocznik Ochrona Środowiska; 2013, Tom 15, cz. 1; 694-713
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    WiMAX Cell Level Simulation Platform Based on ns-2 and DSP Integration
    Autorzy:
    Flizikowski, A.
    Kozik, R.
    Gierszal, H.
    Przybyszewski, M.
    Hołubowicz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/226960.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    FEC codes
    nb-LDPC
    DSP
    integrated platform
    ns-2
    Opis:
    The WiMAX (Worldwide Interoperability for Microwave Access) system based on the IEEE 802.16 family of standards is a promising technology for last-mile access. Both IEEE 802.16 and 3GPP-LTE systems candidate for becoming the 4G network of choice. The need to evaluate multiple performance enhancing techniques like MIMO, OFDM(A), novel channel coding schemes like non-binary LDPC codes, together with development of standards like IEEE 802.21, that aims at enabling handover and interoperability between heterogeneous network types, make rapid prototyping-based simulations an important issue. This paper presents a novel approach to 4G-oriented simulation environment that integrates popular network simulator (ns-2) and a Digital Signal Processing (DSP) to enable comprehensive link layer and cell level simulations. Proposed simulation environment is intended as an evaluation platform for assessing QoS/QoE and Connection Admission Control (CAC) algorithms designed for WiMAX systems. Moreover we study ways to improve simulation time (with focus on AWGN channel simulation) by using CUDA parallel processing technology for NVIDIA graphic cards.
    Źródło:
    International Journal of Electronics and Telecommunications; 2010, 56, 2; 169-176
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Federated Database Systems in Supply Chain Management
    Autorzy:
    Paszkowski, J.
    Marchlewska, A.
    Przybyszewski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/108696.pdf
    Data publikacji:
    2012
    Wydawca:
    Społeczna Akademia Nauk w Łodzi
    Tematy:
    soft computing
    supply chain management
    databases
    federated database systems
    middle software
    Opis:
    The article shows the possible ways of use of federated database technologies in data management in the logistic chains of companies. The architectures and components of software for creating the federated systems and some suggestions for the architecture of data management information systems for companies are presented in the text. The mentioned solution stands a proposal to resolve the difficult problem of cooperation between the computer information systems in companies, which refers to making the data of company available to the external users and managing data in the logistic chain. The authors included an overall review of commercial software, which can be used to build the software of data managing in the chains of cooperating companies.
    Źródło:
    Journal of Applied Computer Science Methods; 2012, 4 No. 2; 55-66
    1689-9636
    Pojawia się w:
    Journal of Applied Computer Science Methods
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Data mining and neural network simulations can help to improve deep brain stimulation effects in parkinson’s disease
    Autorzy:
    Szymański, A.
    Kubis, A.
    Przybyszewski, A. W.
    Powiązania:
    https://bibliotekanauki.pl/articles/952939.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    deep brain stimulation
    neural computation
    data mining
    Parkinson's disease
    Opis:
    Parkinson’s Disease (PD) is primary related to substantia nigra degeneration and, thus, dopamine insufficiency. L-DOPA as a precursor of dopamine is the standard medication in PD. However, disease progression causes L-DOPA therapy efficiency decay (on-off symptom fluctuation), and neurologists often decide to classify patients for DBS (Deep Brain Stimulation) surgery. DBS treatment is based on stimulating the specific subthalamic structure: subthalamic nucleus (STN) in our case. As STN consists of parts with different physiological functions, finding the appropriate placement of the DBS electrode contacts is challenging. In order to predict the neurological effects related to different electrodecontact stimulations, we have tracked connections between the stimulated part of STN and the cortex with the help of diffusion tensor imaging (DTI). By changing a contacts number and amplitude of stimulus (proportional in size to stimulated area), we have determined connections to cortical areas and related neurological effects. We have applied data mining methods to predict which contact (and at what amplitude) should be stimulated in order to improve a particular symptom. We have compared different data mining methods: Wekas Random Forest classifier and Rough Set Exploration System (RSES). We have demonstrated that the Weka classifier was more accurate when predicting the effects of stimulations on general neurological improvements, while RSES was more accurate when using specific neurological symptoms. We have simulated other effects of stimulation related to the interruption of pathological oscillation in the basal ganglia found in PD. Our model represents possible STN neural population with inhibitory and excitatory connections that have pathologically synchronized oscillations. High-frequency electrical stimulation has interrupted synchronization. something that is also observed in PD patients.
    Źródło:
    Computer Science; 2015, 16 (2); 199-215
    1508-2806
    2300-7036
    Pojawia się w:
    Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    International Journal of Applied Computer Science Methods: Authors’ Instructions for the Preparation of the Submission Format of the Final Version of the Manuscript
    Autorzy:
    Zurada, J. M.
    Cader, A.
    Przybyszewski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/108698.pdf
    Data publikacji:
    2009
    Wydawca:
    Społeczna Akademia Nauk w Łodzi
    Tematy:
    JACSM
    authors’ instructions
    submission format
    MS Word template
    Opis:
    The abstract should summarize the content of the paper and should contain at least 50 and at most 120 words. It should be set in 9-point font size and should be inset 1.0 cm from the right and left margins. Following the abstract, at least three and up to six keywords should be included. The keywords must characterize the subject of the paper and assists in indexing.
    Źródło:
    Journal of Applied Computer Science Methods; 2009, 1 No. 1; 93-99
    1689-9636
    Pojawia się w:
    Journal of Applied Computer Science Methods
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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