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Reliability issues of double gate dielectric stacks based on hafnium dioxide (HfO2) layers for non-volatile semiconductor memory (NVSM) applications
No full textabstractEN: In this study, we present selected reliability issues of double gate dielectric stacks for non-volatile semiconductor memory (NVSM) applications. Fabricated gate structures were consisted of PECVD silicon oxynitride layer (SiOxNy) as the pedestal layer and hafnium dioxide layer (HfO2) as the top gate dielectric. In the course of this work, obtained MIS structures were investigated by means of current–voltage characteristics, as well as applying dc stresses in constant current (CCS) and voltage (CVS) mode. Presented results have shown that the application of ultra-thin PECVD silicon oxynitride layer results in significant increase of breakdown voltage value in comparison to MIS structure with only hafnia as the gate dielectric. Moreover, due to the high temperature annealing of deposited SiOxNy layers, MIS device demonstrates much lower leakage currents, as well as higher breakdown voltage values in comparison to device with ‘as-deposited’ SiOxNy bottom layer. The results also proved larger immunity to dc stresses and better retention characteristics of MIS devices with ‘annealed’ oxynitride, in comparison to ‘as-deposited’ pedestal layer.score: 20collation: 107-11
Właściwości kompozytów polimerowych z udziałem proszków lub płatków miedzi jako napełniaczy
No full textscore: 10collation: 338-34
Metody konstrukcji optymalnych układów odwracalnych
No full textabstractPL: Dopiero w 2010 roku, po całej dekadzie badań, opracowano pierwszą metodę syntezy optymalnych układów odwracalnych dla dowolnych funkcji czterech zmiennych. Układy te budowane były ze standardowej biblioteki bramek odwracalnych NCT, mających wyłącznie tzw. pozytywne sterowanie. W pracy opisujemy wyniki naszych rozszerzeń tej metody na przypadek minimalizowania kosztu kwantowego dla układów o zadanej liczbie bramek, a także na układy budowane z bramek NCT o mieszanym sterowaniu (tzn. zarówno o pozytywnym, jak i negatywnym).abstractEN: Synthesis of reversible logic circuits is the most intensively studied topic of reversible computation (i.e. bijective mapping). This emerging research area has applications in many new areas of computer science, e.g. quantum computing, nanotechnologies, optical computing, digital signal processing, communications, bioinformatics, cryptography as well as in low power computation. Recent advances consist in reducing numbers of gates, garbage bits or quantum cost. Synthesis of optimal reversible circuits is a very hard problem even for small input/output circuits. In 2010 a method for construction of 4-input/output optimal circuits was developed for circuits constructed using reversible gates from NCT library [5]. In the paper we present a summary of the results of our extensions to this method. We have developed an approach for minimization of quantum cost of the 4-input/output circuits [7]. Our computational experiments have been conducted for two sets of reversible gates: a standard NCT library and extended mixed-polarity NCT library, which consists of gates with both positive and negative control lines. Using our tools we have found circuits for the known reversible benchmarks which have lower quantum cost than any of the best known implementations so far. Based on the data of our experiments we have made a statistical comparison of the optimal circuits built from standard NCT and mixed-polarity NCT libraries.score: 7collation: 647-64
Klasyfikacja danych - przegląd wybranych metod
No full textabstractPL: Artykuł przedstawia zagadnienie tworzenia klasyfikacji danych oraz dokonuje przeglądu kilku popularnych metod wyznaczania klasyfikacji takich jak: teoria zbiorów przybliżonych, wzorce wyłaniające się czy maszyny wektorów podpierających, pokrótce omawiając mechanizmymatematyczne będące podstawą każdego z klasyfikatorów. W ramach pracy porównana jest efektywność poszczególnych metod dla różnych zadań (zbiory małe/duże, klasyfikacjadwu/wieloklasowa), jak również przeprowadzana jest częściowa analiza uzyskanych wyników. Na tej podstawie zarysowane są charakterystyki danych, dla których określone metody uzyskują najlepsze wyniki.score: 6collation: 55-6
Fast ADC Based Multichannel Acquisition System for the GEM Detector
No full textabstractEN: A novel approach to the Gas Electron Multiplier1 (GEM) detector readout is presented. Unlike commonly usedmethods, based on discriminators,23 and analogue FIFOs,4 the method developed uses simultaneously samplinghigh speed ADCs and advanced FPGA-based processing logic to estimate the energy of every single photon.Such method is applied to every GEM strip signal. It is especially useful in case of crystal-based spectrometersfor soft X-rays, where higher order reflections need to be identified and rejected.5 For the purpose of the detectorreadout, a novel conception of the measurement platform was developed.score: 10collation: 84540M-1-84540M-
Improvement of Intelligent Cyclic ADC Resolution by Randomization of DAC INL Errors
No full textabstractEN: The paper discusses a new method of improvement of conversion quality in intelligent cyclic analog-to-digital converters(ICADCs). One of the key factors influencing performance of ICADC is integral nonlinearity (INL) of its internaldigital-to-analog converter (DAC). In the paper this influence is analyzed and there is proposed a method of its reductionusing randomization of the errors caused by DAC INL and their averaging, which allows to improve ICADC resolution.Effectiveness of the developed method was examined in simulation experiments.score: 10collation: 84540Z-1-84540Z-
Data Management and Quality Assurance in a Population Study
No full textabstractEN: In this paper we present a model for effective methods of data collection with intensive data quality control and datasecurity and design and deployment of management ICT system to ensure high quality-data in large scale populationstudy. The designed and tested system fulfill all the requirements of entire IT and data management structure is designedwith central server and web-based peripheral applications and tailored software managing data duringentry/transmission/storage/coding under control of the QA and security procedures. The system was carried out duringPONS project and the information from this model data management structure may improve the design of reliabledatabases’ management for large-scale epidemiological studies.The project model itself by tailored hardware/software application shows positive impact of QA on the quality ofoutcomes in outcome analysis results, effective data management with shorter time, efficiency, ensuring the quality ofepidemiological data and indicators of health with elimination of common errors of research questionnaire and medicalmeasurements.score: 10collation: 84541O-1-84541O-1