Filters
total: 7435
-
Catalog
- Publications 4808 available results
- Journals 41 available results
- Publishing Houses 3 available results
- People 191 available results
- Inventions 15 available results
- Projects 53 available results
- Research Teams 13 available results
- Research Equipment 3 available results
- e-Learning Courses 761 available results
- Events 11 available results
- Open Research Data 1536 available results
displaying 1000 best results Help
Search results for: BUTLER MATRIX
-
Coupled-resonator filters with frequency-dependent couplings: coupling matrix synthesis
Publication -
Non-matrix reference matrials- chalanges in the preparation of standard gas mixtures
PublicationIn the last few years particularly great pressure is exerted on quality control and assurance of analytical measurement results. An invaluable role in this process is played by reference materials. The paper presents the characteristics of basic types of reference materials, with particular attention to gaseous reference materials. In addition, a review of literature on techniques of preparation of gaseous standard materials, published...
-
Metal heksacyanoferrate network synthesized inside polymer matrix for electrochemical capacitors
PublicationPrzedmiotem publikacji jest charakterystyka elektrochemiczna polimeru przewodzącego (poli(3,4-etylenodioksytiofenu)) modyfikowanego błękitem pruskim oraz jego pochodnymi, pochodną kobaltową oraz pochodną niklową. Materiały są stabilne elektrochemicznie, a uzyskane wartości pojemności elektrycznej pozwalają na wykorzystanie ich przy konstrukcji kondensatorów elektrochemicznych.
-
Reward Learning Requires Activity of Matrix Metalloproteinase-9 in the Central Amygdala
Publication -
Trial Proteomic Qualitative and Quantitative Analysis of the Protein Matrix of Submandibular Sialoliths
Publication -
Novel investigation of pyrolysis mechanisms and kinetics for functional groups in biomass matrix
Publication -
Production of gaseous matrix-free reference materials. Application of thermoanalytical techniques
PublicationMateriały odniesienia są wykorzystywane w każdym laboratorium w celu zapewnienia jakości wyników pomiarów analitycznych. Produkcja materiałów odniesienia nie jest zadaniem łatwym, szczególnie w przypadku składników gazowych, toksycznych i o nieprzyjemnym zapachu. Termiczny rozkład związków powierzchniowych jest bardzo dogodnym sposobem sporządzania właśnie tego rodzaju mieszanin. Ważną rolę w procesie termicznego rozkładu związków...
-
Non-matrix reference materials-the challenges in the preparation of standard gas mixtures
PublicationIn the last few years particularly great pressure is exerted on quality control and assurance of analytical measurement results. An invaluable role in this process is played by reference materials. The paper presents the characteristics of basic types of reference materials, with particular attention to gaseous reference materials.
-
Convergence of expansions in Schrödinger and Dirac eigenfunctions, with an application to the R-matrix theory
PublicationW pracy zbadano właściwości rozwinięć w szeregi funkcji własnych dla zagadnień Schrödingera i Diraca. Potwierdzono obserwacje poczynione wcześniej przez Rosenthala oraz przez Szmytkowskiego i Hinze, że szereg funkcyjny występujący w teorii R-macierzy dla cząstek Diraca w ogólności nie zbiega do funkcji ciągłej.
-
New matrix-free reference material for ethene in the form of optical fibres
PublicationReference materials are indispensable in the qualitycontrol and quality assurance of analytical measurements. Onenovel approach to the generation of standard gaseous mixturesof toxic, reactive, volatile, labile, and malodorous substancesinvolves thermal decomposition or rearrangement, under definedtemperature conditions, of compounds immobilized, bychemical bonding, on the surface of an appropriate carrier torelease specific amounts...
-
A better practical algorithm for distributed graph coloring
Publication -
Better understanding EMI generation of power converters
PublicationPrzedstawiono metodę przewidywania poziomu zaburzeń w układzie podwyższającym napięcie w oparciu o metodę filtracji Wienera. Pozwoliło to na określenie odpowiedzi impulsowej pomiędzy przyczyną zaburzenia (zmianą napięcia na elementach półprzewdonikowych) a zaburzeniem. Metodę zwerifikowano przy użyciu danych z symulacji oraz pomiarów w rzeczywistym obiekcie
-
Influence of the jitter buffer on the quality of service VoIP.
PublicationVoIP (Voice over IP) is a modern service with enormous potential for yet further growth. It uses the already available and universally implemented IP transport platform. One significant problem, however, is ensuring the Quality of Service, abbreviated QoS. This paper addresses exactly that issue. In an extensive investigation the influence of jitter buffers on QoS is being examined in depth. Two implementations, namely a passive...
-
Cutter business technology journal
Journals -
Comparison of Optimization Techniques for Coupling Matrix Synthesis Using Eigenvalue Based Approach
Publication -
Calcification Alters the Viscoelastic Properties of Tendon Fascicle Bundles Depending on Matrix Content
Publication -
Carbon-mineral adsorbents with a diatomaceous earth/perlite matrix modified by carbon deposits
Publication -
Matrix solid-phase dispersion with sand in chromatographic analysis of essential oils in herbs
Publication -
Structure Analysis of the Modified Cast Metal Matrix Composites by Use of the Rve Theory
Publication -
Two-stage procedure of building a spatial weight matrix with the consideration of economic distance
Publication -
The role of compensation defects in Eu3+ stabilization under reductive atmosphere in Sr2SiO4 matrix
Publication -
Impact of paint matrix composition and thickness of paint layer on the activity of photocatalytic paints
Publication -
Elastic-plastic properties of metal matrix composites: Validation of mean-field approaches
Publication -
Chemically modified glass fiber as a matrix-free reference material for volatile compounds
PublicationW pracy opisano sposób wytwarzania nowego typu bezmatrycowych materiałów odniesienia lotnych związków organicznych. Do otrzymywania lotnych analitów wykorzystano technikę termicznego rozkładu związków powierzchniowych. Jako nośnik zastosowano modyfikowane chemicznie włókna szklane. Związkiem oznaczanym był chlorek metylu.
-
Chemical Derivatization Processes Applied to Amine Determination in Samples of Different Matrix Composition
PublicationAmines are important biological compounds, and so their analysis and monitoring in various matrices is worthy of investigation and development.Due to the polar nature of amines, chromatographic analysis of free amines is generally unsatisfactory owing to adsorption and decomposition of the solute on the column, resulting in peak tailing and losses. Therefore, many derivatization reactions are employed to reduce the polarity, improve...
-
A Task-Scheduling Approach for Efficient Sparse Symmetric Matrix-Vector Multiplication on a GPU
PublicationIn this paper, a task-scheduling approach to efficiently calculating sparse symmetric matrix-vector products and designed to run on Graphics Processing Units (GPUs) is presented. The main premise is that, for many sparse symmetric matrices occurring in common applications, it is possible to obtain significant reductions in memory usage and improvements in performance when the matrix is prepared in certain ways prior to computation....
-
Matrix-based robust joint fingerprinting and decryption method for multicast distribution of multimedia
PublicationThis paper addresses the problem of unauthorized redistribution of multimedia content by malicious users (pirates). The solution proposed here is a new joint fingerprinting and decryption method which meets the requirements for both imperceptibility and robustness of fingerprints and scalability in terms of design and distribution of fingerprinted multimedia content. The proposed method uses a simple block cipher based on matrix...
-
The application of TD-GC-FID technique for production of matrix-free reference materials
PublicationIn the last few years particular pressure is exerted on finding new analytical methods which would provide real possibilities of monitoring and control of the state of the environment. Intensive development of analytical techniques for measurements of gaseous media and the negative effects of BTX compounds make it necessary to produce new gaseous reference materials. To prepare the appropriate non- matrix reference material thermal...
-
Accuracy, Memory and Speed Strategies in GPU-based Finite-Element Matrix-Generation
PublicationThis paper presents strategies on how to optimize GPU-based finite-element matrix-generation that occurs in the finite-element method (FEM) using higher order curvilinear elements. The goal of the optimization is to increase the speed of evaluation and assembly of large finite-element matrices on a single GPU (Graphics Processing Unit) while maintaining the accuracy of numerical integration at the desired level. For this reason,...
-
Determination of Odor Air Quality Index (OAQII) Using Gas Sensor Matrix
PublicationThis article presents a new way to determine odor nuisance based on the proposed odor air quality index (OAQII), using an instrumental method. This indicator relates the most important odor features, such as intensity, hedonic tone and odor concentration. The research was conducted at the compost screening yard of the municipal treatment plant in Central Poland, on which a self-constructed gas sensor array was placed. It consisted...
-
An optimal form of the finite element mass matrix in the analysis of longitudinal vibrations of rods
PublicationIn this paper, an attempt is made to find the optimal form of the mass matrix of a rod finite element, which allows one to obtain the smallest errors in the longitudinal frequency determination of natural vibrations of any boundary conditions within the whole range of determined frequencies. It is assumed that the mass matrix can be treated as a linear combination of the consistent and diagonal matrices. Based on analytical considerations,...
-
Efficient Fabry-Perot Open Resonator Analysis by the use of a Scattering Matrix Method
PublicationIn this paper a comparative study of the computational efficiency of two modeling methods applied to the analysis of the plano- and double-concave Fabry-Perot open resonators is presented. In both numerical approaches, a scattering matrix method was applied, which allows splitting the analysis of the resonator into several sections, including the one with a spherical mirror, which requires the largest computing resources. Two modeling...
-
Direct modulation for conventional matrix converters using analytical signals and barycentric coordinates
PublicationThis paper proposes the generalized direct modulation for Conventional Matrix Converters (CMC) using the concept of analytical signals and barycentric coordinates. The paper proposes a novel approach to the Pulse Width Modulation (PWM) duty cycle computing, which allows faster prototyping of direct control algorithms. The explanation of the new idea using analytical considerations demonstrating the principles of direct voltage...
-
Communication Model Order Reduction in Hybrid Methods Involving Generalized Impedance Matrix
PublicationA novel strategy for the efficient analysis of frequency-domain scattering electromagnetic problems in open and closed domains is presented. A fully automatic model-order reduction technique, called the enhanced reduced-basis method, is applied to increase the efficiency of the hybrid approach, which combines the finite-element and mode-matching methods. Numerical tests show that the proposed algorithm yields reliable and highly...
-
The energy test ''100 fishing deys'' of a Baltic cutter
PublicationReferat prezentuje oryginalną koncepcję testu energetycznego podczas nieprzerwanej eksploatacji kutra bałtyckiego w przeciągu 100 dni "pracy na łowisku". Test zapewni wyznaczenie na drodze obliczeniowej ilości zużytego paliwa i sprawności eksploatacyjnej układu energetycznego. Podane modele obliczeniowe uwzględniają rzeczywiste rozwiązania układów energetycznych i układów połowowych oraz warunki pracy jednostek a także wartości...
-
Low sulphur coal combustion - Optimisation of boiler tunings.
PublicationBadaniami w ramach projektu objęto przede wszystkim kotły parowe oraz układy wspomagające, takie jak: podajniki węgla, młyny, wentylatory, instalacje oczyszczania spalin. Badania eksperymentalne przeprowadzono na obiektach Elektrociepłowni Kraków, natomiast obliczenia numeryczne zostały wykonane przez Politechnikę Wrocławska we współpracy z firmą R&D EDF. Sformułowano szereg konkretnych wytycznych do przeprowadzenia niezbędnych...
-
Hydraulic drive and control of the equipment of the small fishing cutter.
PublicationPrzedstawiono uwarunkowania i założenia techniczne oraz zaprojektowany i zrealizowany układ napędu i sterowania hydraulicznego urządzeń małego kutra rybackiego KR10. Pewna zmiana układu zrealizowanego wynikała z konieczności dostosowania go do tymczasowo zastosowanych urządzeń połowowych, odmiennych niż przewidywał projekt. Przedstawiono także informacje o wynikach prób morskich i dwumiesięcznego okresu eksploatacji w różnych,...
-
Gas boiler as a heat source for the domestic micro-CHP
PublicationThis analysis considers a commercially available domestic gas boiler as a heat source for a domestic organic Rankine cycle system. An experimental study was made into the applicability of the gas boiler (De Dietrich with thermal power 25 kW) coupled with the laboratory prototype micro ORC setup. The main aim of the study is to determine the working fluid temperature, attainable heat rates and effciencies of the whole system. Preliminary...
-
Design and distribution of air nozzles in the biomass boiler assembly
PublicationDue to energy crisis as well as increasing pollution of the environment, renewable energy sources usage increases all over the world. These facts encouraged authors to start research over developing a uniform biomass boiler calculation model. This paper presents a design of biomass boiler assembly created for ORC (Organic Rankine Cycle) unit since these systems could achieve strong position in energy industry....
-
Gas boiler as a heat source for the domestic micro-CHP
PublicationIn the presented analysis a commercially available domestic gas boiler as a heat source for domestic ORC is considered. The applicability of the gas boiler (De Dietrich with thermal power 25 kW) coupled with the laboratory prototype micro ORC setup has experimentally studied. The main aim of the study is to determine the working fluid temperature, attainable heat rates and efficiencies of the whole system. Preliminary investigations...
-
Towards better understanding of context-aware knowledge transformation
PublicationConsidering different aspects of knowledge functioning, context is poorly understood in spite of intuitively identifying this concept with environmental recognition. For dynamic knowledge, context especially seems to be an essential factor of change. Investigation on the impact of context on knowledge dynamics or more generally on the relationship between knowledge and its contextual interpretation is important in order to understand...
-
Outlier detection method by using deep neural networks
PublicationDetecting outliers in the data set is quite important for building effective predictive models. Consistent prediction can not be made through models created with data sets containing outliers, or robust models can not be created. In such cases, it may be possible to exclude observations that are determined to be outlier from the data set, or to assign less weight to these points of observation than to other points of observation....
-
Effect of outlet velocity of bulk solids on loads in silos
PublicationArtykuł pokazuje wyniki do świadczeń w silosach cylindrycznych z kontrolowanym wypływem. Doświadczenia wykonano z piaskiem. Pokazano wpływ prędkości wypływu na wielkość naporu pomierzonego na ścianie oraz wielkość amplitud.
-
Total outer-connected domination in trees
PublicationW pracy przedstawiono dolne ograniczenie na liczbę dominowania totalnego zewnętrznie spójnego w grafach oraz scharakteryzowano wszystkie drzewa osiągające to ograniczenie.
-
The outer-connected domination number of a graph
PublicationW pracy została zdefiniowana liczba dominowania zewnętrznie spójnego i przedstawiono jej podstawowe własności.
-
2-outer-independent domination in graphs
PublicationWe initiate the study of 2-outer-independent domination in graphs. A 2-outer-independent dominating set of a graph G is a set D of vertices of G such that every vertex of V(G)\D has at least two neighbors in D, and the set V(G)\D is independent. The 2-outer-independent domination number of a graph G is the minimum cardinality of a 2-outer-independent dominating set of G. We show that if a graph has minimum degree at least two,...
-
Analysis of scattering from arbitrary configuration of elliptical obstacles using T-matrix representation
PublicationW artykule przedstawiono nową metodę analizy zjawiska rozpraszania dla dowolnej konfiguracji obiektów eliptycznych. Przedstawione podejście, dotyczącego pojedynczego obiektu, oparte jest na połączeniu analizy w układzie eliptycznym i cylindrycznym. W analizie wielu obiektów wykorzystana została procedura iteracyjna. Uzyskane wyniki zostały zweryfikowane przy wykorzystaniu oprogramowania komercyjnego.
-
The effect of the ceramic dispersion on the nickel matrix composite coating properties after plastic working
PublicationW pracy określono wpływ fazy dyspersyjnej Al2O3 na wybrane potencjalne właściwości powłok kompozytowych o osnowie niklowej. Powłoki Ni-Al-Al2O3 zostały nałożone na próbki stalowe przy użyciu technologii poddźwiękowego płomieniowego natryskiwania cieplnego. Następnie poddane zostały obróbce plastycznej na zimno i na gorąco poprzez walcowanie, a także prasowania na zimno na prasie hydraulicznej. Obróbka plastyczna jest metodą alternatywną...
-
Matrix Metalloproteinase-9 Is Required for Hippocampal Late-Phase Long-Term Potentiation and Memory
Publication -
Porous silica matrix as an efficient strategy to boosted photocatalytic performance of titania/carbon composite
Publication