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Tytuł:
Testing methods for vehicle shock absorbers
Autorzy:
Gardulski, J.
Powiązania:
https://bibliotekanauki.pl/articles/244102.pdf
Data publikacji:
2008
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
transport
vibroacoustic methods
testing methods
shock absorbers
Opis:
The suspension is the component decisive about safety of drive of cars, in which dumping elements have essential meaning, which the most often are telescopic hydraulic shock-absorbers. Therefore, in exploitation process so important investigations of their technical condition are in track which opinion of their usefulness should be made not only to more far exploitation, but also the identification of typical damages. The common used method in practical ways of diagnosing of shock-absorber in article was introduced. There are two methods of investigations: built from and shock-absorber built-in in vehicle suspension. In first method - in support about indicatory graph, the characteristic of suppression be appointive. They are the basis to diagnostic opinion of technical condition of studied damper. In second method the results of investigations have approximate character. From those methods the most often used station control of vehicles in Poland - method post EUSAMA and BOGE in article were described, which used in investigations the harmonic excitatory of vibrations stimulant to vibrations unsprung and sprung masses of vehicle. The car is so folded, vibrate mechanical stimulated by excitator to vibrations arrangement. The vibro-acoustic methods of analyses' of signals in article were introduced, which can be practical in investigations of diagnostic shock-absorber. They are then the method of multidimensional analysis of signal - the Short-Time Fourier Transforms (the STFT), Wigner - Ville'a and Wavelet.
Źródło:
Journal of KONES; 2008, 15, 2; 77-88
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical methods in fluid mechanics – an overview
Autorzy:
Sobieski, Wojciech
Šarler, Božidar
Powiązania:
https://bibliotekanauki.pl/articles/22672799.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
CFD
numerical modelling
mesh methods
meshless methods
Opis:
The article presents in a review way the most important numerical methods used in modern fluid mechanics. The individual chapters discuss Finite Difference Method, Finite Volume Method, Lattice Boltzmann Method, Discrete Element Method and Smoothed Particle Hydrodynamics. The aim of the article is to familiarize the reader with the most important concepts, features and mathematical equations used in particular methods. The article is intended mainly for people who want to get acquainted with the current possibilities of numerical modelling in the field of broadly understood fluid mechanics. The material is intended to facilitate the decision on how to implement the planned play research.
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2023, 26(1); 185--218
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Economic and logistic research methods
Autorzy:
Kowalczyk, Anna
Powiązania:
https://bibliotekanauki.pl/articles/1181234.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
methods
researches
science
Opis:
In this papers the methods for economic researches used in i.e. logistics are presented. The concern of economic researches is important for scientists and for businessmen. The knowledge of methods and theirs skilful application enables the optimization of management and of cognitive processes.
Źródło:
World Scientific News; 2017, 72; 544-549
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The projective-Newton methods
Autorzy:
Hobot, Grażyna
Pokora, Teresa
Powiązania:
https://bibliotekanauki.pl/articles/748356.pdf
Data publikacji:
1986
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Finite elements, Rayleigh-Ritz and Galerkin methods, finite methods
Single equations
Opis:
.
In this paper we consider the Newton-like methods for the solution of nonlinear equations. In each step of the Newton method the linear equations are solved approximatively by a projection method. We call this a projective-Newton method. We investigate the convergence and the order of convergence for these methods. Next, the projective-Newton methods in the finite element space are applied for nonlinear elliptic boundary value problems. In this case the linear equations of the Newton method are solved by the Ritz method.
Źródło:
Mathematica Applicanda; 1986, 14, 27
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of patch substructuring methods
Autorzy:
Gander, M. J.
Halpern, L.
Magoules, F.
Roux, F. X.
Powiązania:
https://bibliotekanauki.pl/articles/929707.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
metoda rozkładu
metoda dopełniacza Schura
zoptymalizowana metoda Schwarza
Schwarz domain decomposition methods
Schur complement methods
patch substructuring methods
optimized Schwarz methods
Opis:
Patch substructuring methods are non-overlapping domain decomposition methods like classical substructuring methods, but they use information from geometric patches reaching into neighboring subdomains, condensated on the interfaces, to enhance the performance of the method, while keeping it non-overlapping. These methods are very convenient to use in practice, but their convergence properties have not been studied yet. We analyze geometric patch substructuring methods for the special case of one patch per interface. We show that this method is equivalent to an overlapping Schwarz method using Neumann transmission conditions. This equivalence is obtained by first studying a new, algebraic patch method, which is equivalent to the classical Schwarz method with Dirichlet transmission conditions and an overlap corresponding to the size of the patches. Our results motivate a new method, the Robin patch method, which is a linear combination of the algebraic and the geometric one, and can be interpreted as an optimized Schwarz method with Robin transmission conditions. This new method has a significantly faster convergence rate than both the algebraic and the geometric one. We complement our results by numerical experiments.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2007, 17, 3; 395-402
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Systematyka metod oceny jakości działalności marketingowej organizacji
Systematics of quality assessment methods for business marketing organizations
Autorzy:
Szyran-Resiak, Agata
Powiązania:
https://bibliotekanauki.pl/articles/447025.pdf
Data publikacji:
2015
Wydawca:
Mazowiecka Uczelnia Publiczna w Płocku
Tematy:
systematics
methods of assessing the quality of an organization's marketing activities
qualitative methods
quantitative methods
qualitative and quantitative methods (mixed)
Opis:
This study presents detailed systematics of quality assessment methods for marketing organizations diving it into three groups: qualitative, quantitative and qualitative-quantitative (mixed) methods. The first group includes methods such as: marketing audit, marketing excellence evaluation and review oftheethical and social responsibility of the organization. The second group is: sales analysis, market share analysis, impact analysis with marketing expenditures on sales area, financial analysis, profitability and efficiency control, marketing effectiveness ranking and observation on customer satisfaction. The last group includes methods: balanced scorecard and marketing benchmark. Approach towards assessing the quality of organization's marketing activities requires using one particular method. Due to big number of existing methods for assessing the quality of marketing activities, a question arises: which one will allow us fully assess the activity.
Źródło:
Zeszyty Naukowe PWSZ w Płocku. Nauki Ekonomiczne; 2015, 2(22); 35-48
1644-888X
Pojawia się w:
Zeszyty Naukowe PWSZ w Płocku. Nauki Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Résumé on Interval Runge-Kutta Methods
Autorzy:
Marciniak, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/748753.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
interval methods for ODEs, Runge-Kutta methods, floating-point interval arithmetic
Opis:
W artykule przedstawiono jawne i niejawne metody przedziałowe typu Rungego-Kutty. Metody takie zawierają w sobie błędy metod, co oznacza, że ten rodzaj błędów jest uwzględniony w otrzymywanych rozwiązaniach przedziałowych. Stosując te metody do rozwiązywania zagadnienia początkowego w zmiennopozycyjnej arytmetyce przedziałowej otrzymujemy zatem rozwiłzania w postaci przedziałów, które zawierają wszystkie możliwe błędy numeryczne. W artykule przedstawiono także przykłady numeryczne.
The paper presents explicit and implicit interval methods of Runge-Kutta type. Such methods introduce the errors of methods. It means that this kind of errors are included in the interval solutions obtained. Applying these methods for solving the initial value problem in floating-point interval arithmetic we can obtain solutions in the form of intervals which contain all possible numerical errors. Numerical examples are presented.
Źródło:
Mathematica Applicanda; 2012, 40, 1
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods for Different Orders Stresses Estimation with Diffraction Methods
Autorzy:
Gadalińska, E.
Powiązania:
https://bibliotekanauki.pl/articles/97851.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
stress
diffraction methods for stress estimation
orders of stresses
Opis:
The publication describes how diffraction methods and mathematical bases can be used for measurement of various types of stresses in single-phase and multiphase materials. Firstly, the paper defines the stresses and classifies them from the scale of their interactions point of view. Subsequently, the phenomenon of radiation diffraction on the crystalline lattice is presented including formulas describing this phenomenon and the dependencies enabling stress measurements. The key part of the paper is the description of one of the second order stress estimation methods based on diffraction data and a selfconsistent model.
Źródło:
Fatigue of Aircraft Structures; 2017, 9; 39-54
2081-7738
2300-7591
Pojawia się w:
Fatigue of Aircraft Structures
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Generalized Newton and NCP-methods: convergence, regularity, actions
Autorzy:
Kummer, Bernd
Powiązania:
https://bibliotekanauki.pl/articles/729371.pdf
Data publikacji:
2000
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
nonsmooth functions
generalized Newton methods
critical points
complementarity
SQP methods
inverse mappings
regularity
Opis:
Solutions of several problems can be modelled as solutions of nonsmooth equations. Then, Newton-type methods for solving such equations induce particular iteration steps (actions) and regularity requirements in the original problems. We study these actions and requirements for nonlinear complementarity problems (NCP's) and Karush-Kuhn-Tucker systems (KKT) of optimization models. We demonstrate their dependence on the applied Newton techniques and the corresponding reformulations. In this way, connections to SQP-methods, to penalty-barrier methods and to general properties of so-called NCP-functions are shown. Moreover, direct comparisons of the hypotheses and actions in terms of the original problems become possible. Besides, we point out the possibilities and bounds of such methods in dependence of smoothness.
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2000, 20, 2; 209-244
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approximation methods for a class of discrete Wiener-Hopf equations
Autorzy:
Nowak, M. A.
Powiązania:
https://bibliotekanauki.pl/articles/255249.pdf
Data publikacji:
2009
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
projection methods
iterative methods
discrete Wiener-Hopf equations
Toeplitz operators
Opis:
In this paper, we consider approximation methods for operator equations of the form Au + Bu = ƒ, where A is a discrete Wiener-Hopf operator on lp (1≤ p < ∞) which symbol has roots on the unit circle with arbitrary multiplicities (not necessary integers). Conditions on perturbation B and ƒ are given in order to guarantee the applicability of projection-iterative methods. Effective error estimates, and simultaneously, decaying properties for solutions are obtained in terms of some smooth spaces.
Źródło:
Opuscula Mathematica; 2009, 29, 3; 271-288
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Properties of projection and penalty methods for discretized elliptic control problems
Autorzy:
Cegielski, Andrzej
Grossmann, Christian
Powiązania:
https://bibliotekanauki.pl/articles/729435.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
convex programming
control of PDE
projection methods
penalty methods
Opis:
In this paper, properties of projection and penalty methods are studied in connection with control problems and their discretizations. In particular, the convergence of an interior-exterior penalty method applied to simple state constraints as well as the contraction behavior of projection mappings are analyzed. In this study, the focus is on the application of these methods to discretized control problem.
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2007, 27, 1; 23-41
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods of financial standing assessmentof building enterprises
Autorzy:
Kitowski, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/950951.pdf
Data publikacji:
2013
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
financial condition
methods
construction
Opis:
From a methodological point of view, the need to consider, in the synthetic methods, the assessment of enterprise’s financial standing, the criterion of the industrial specific features of the analyzed company and the changing economic conditions of its operation seems to be important . In this paper, an attempt has been made to present assumptions of few discriminatory, logit and banking methods to assess the financial standing of companies belonging to the building sector, taking into account the specifics of the industry. Critical reference has been made to numerous cases of simplifications and methodological errors that occur in the national literature on the subject.
Źródło:
Financial Sciences. Nauki o Finansach; 2013, 4 (17); 71-80
2080-5993
2449-9811
Pojawia się w:
Financial Sciences. Nauki o Finansach
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stochastic approximation. I. Optimization methods without constraints
Autorzy:
Koronacki, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/747471.pdf
Data publikacji:
1977
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Stochastic approximation,Sequential methods,Statistics
Opis:
.
This is a critical review of recent results in stochastic approximation methods for optimization problems. Part I deals with unconstrained optimization, with special emphasis on the problem of choice of the direction and the length of iteration steps.
Źródło:
Mathematica Applicanda; 1977, 5, 11
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stochastic approximation. II. Optimization methods with constraints
Autorzy:
Koronacki, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/747475.pdf
Data publikacji:
1977
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Stochastic approximation,Sequential methods,Statistics
Opis:
.
This is a critical review of recent results in stochastic approximation methods for optimization problems. Part II deals with constrained optimization; here, the stochastic variants of the penalty function method, the method of feasible directions and the method of Lagrange functions are discussed.
Źródło:
Mathematica Applicanda; 1977, 5, 11
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Najnowsze metody nieniszczące wykorzystywane w badaniach w budownictwie
The latest non-destructive methods used in research in construction
Autorzy:
Schabowicz, K.
Powiązania:
https://bibliotekanauki.pl/articles/107874.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
obiekty budowlane
diagnostyka
metody badawcze
metody nieniszczące
civil structures
diagnostics
test methods
nondestructive methods
seminondestructive methods
Opis:
W artykule przedstawiono najnowsze metody nieniszczące wykorzystywane w badaniach w budownictwie. Zamieszczono przegląd i opis wybranych metod. Pokazano przede wszystkim przydatne do tego celu najnowsze metody nieniszczące. Można zaobserwować, iż rozwój metod badawczych jest ukierunkowany na ocenę w elementach i konstrukcjach innych cech niż wytrzymałość. Następuje on w kierunku konstruowania aparatury badawczej pozwalającej uzyskiwać precyzyjne dane odnośnie do struktury badanego elementu zarówno w skali makro, jak i mikro, a czasem i nano. Daje to możliwość pełniejszej oceny jakości wykonania poszczególnych elementów w obiekcie budowlanym i jego konstrukcji.
This paper presents the latest non-destructive methods used in research in construction. The classification of the methods are included. The most interesting of the methods are described. A focus is on the latest nondestructive. Today the development of test methods is oriented towards the evaluation of the characteristics of structures and structural components other than strength. The development of equipment enabling one to obtain an accurate image of the inside structure of the tested element in macro, micro and nano scale. An extensive survey of the literature on the subject, which researchers and experts in the diagnostics of civil structures may find useful, is included.
Źródło:
Badania Nieniszczące i Diagnostyka; 2018, 3; 48-51
2451-4462
2543-7755
Pojawia się w:
Badania Nieniszczące i Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The implementation of cooperative methods in higher education
Autorzy:
CZINEGE, Monika
Powiązania:
https://bibliotekanauki.pl/articles/455898.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Rzeszowski
Tematy:
higher education,
cooperative methods
Opis:
The general problems of the Hungarian education system surface in the higher education sphere as well. Instructors frequently note the knowledge, skill, and competence-related deficien-cies of newly enrolled students. Additional difficulties are posed by the lack of motivation or the low level of interest toward learning. Furthermore, the prevalence of traditional educational meth-ods, the lectures designed for a large student audience and similarly structured seminars tend to exacerbate the problem. Students do not prepare for classes or strive to increase their knowledge via independent work and active in-class participation. Consequently new methods are needed for increasing the efficiency of the educational process, along with the enhancement of internal moti-vation and the promotion of subject-related interest.
Źródło:
Edukacja-Technika-Informatyka; 2016, 7, 1; 249-257
2080-9069
Pojawia się w:
Edukacja-Technika-Informatyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Weight versus reference point multiple criteria decision making methods - analogies and differences
Autorzy:
Kaliszewski, I.
Powiązania:
https://bibliotekanauki.pl/articles/307708.pdf
Data publikacji:
2003
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
podejmowanie decyzji
multiple criteria decision making
weight methods
reference point methods
Opis:
In this work we shall be concerned with interactive multiple criteria decision making methods. We show how on the technical level the class of reference point methods can be reduced to the class of weight methods. Though methods from these two classes represent two different interactive decision making paradigms, the equivalence observed opens a way for a joint implementation of a pair of methods each representing a different class. This would establish a firm ground for systematic comparison of both classes of methods as well as for hybrid schemes mixing decisional tools specific for each class.
Źródło:
Journal of Telecommunications and Information Technology; 2003, 3; 9-15
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Testing the randomness of lithostratigraphic successions with the Markov Chain methods
Autorzy:
Doktor, M.
Krawczyk, A.
Mastej, W.
Powiązania:
https://bibliotekanauki.pl/articles/191918.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Markov chain methods
Monte Carlo methods
coal-bearing successions
Opis:
The crucial role in the studies on layer successions in lithostratigraphic sections with the application of stochastic model of depositional processes represented by the Markov chain is played by correct estimation of the matrix of transition numbers between lithofacies expected in a random sequence. Methods known from the literature are iteration procedures, which do not ensure quick, general solution. Hence, we propose a universal method based upon the Monte Carlo simulation technique. This method enables the researcher to estimate precisely and reliably the expected matrix of facies transitions.
Źródło:
Annales Societatis Geologorum Poloniae; 2010, 80, No 2; 163-166
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Teaching quantitative research methods: the employability factor
Autorzy:
Charlotte, Brookfield,
Powiązania:
https://bibliotekanauki.pl/articles/890407.pdf
Data publikacji:
2016
Wydawca:
Akademia Pedagogiki Specjalnej im. Marii Grzegorzewskiej. Wydawnictwo APS
Tematy:
Quantitative Methods
Embedding
Sociology
Undergraduate
UK
Opis:
Various initiatives have been launched to encourage sociology students studying in the UK to engage more with quantitative research methods (for example: Dale et al., 2008; Adney and Carey, 2009; Falkingham et al., 2009), however, their success has been limited. Embedding quantitative methods in substantive sociology curricula has been suggested as one way to reduce students’ anxieties about learning quantitative research methods (Williams et al., 2015). This approach has been employed at Cardiff University’s School of Social Sciences, where quantitative skills have been strategically incorporated into various aspects of a first year undergraduate substantive module. This paper will reflect on the experience of teaching on this module. The paper will conclude that while the introduction of quantitative content into substantive modules indicates support for change, embedding alone cannot be viewed as a single solution to encouraging to students’ to learn about or utilise quantitative research methods. Two possible reasons for this will be suggested. Firstly, it will be argued that the majority of students no longer pursue sociology at degree level in order to gain the skills to become a competent social researcher, but rather see sociology as a discipline that will equip them with transferable and desirable skills for many occupations. Consequently, engagement with quantitative research methods is not essential to students’ strategic approach to learning as it was for previous generations who wished to understand how to study their social world. Secondly, it will be suggested that the deficit of quantitative methods in mainstream British sociology journals and the methodological preferences of practicing sociologists leads to speculation over the available staff who are capable of delivering an integrated curriculum with quantitative methods embedded in substantive modules.
Źródło:
International Journal of Pedagogy, Innovation and New Technologies; 2016, 3(2); 10-19
2392-0092
Pojawia się w:
International Journal of Pedagogy, Innovation and New Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of pain in athletes – selected methods
Autorzy:
Leźnicka, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/1054971.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
athletes
measurement methods
pain
physical effort
Opis:
It is generally believed that athletes experience pain in a different way than normally active individuals. Many scientists have confirmed the hypothesis that long-term physical activity can alter the perception of pain, i.e. athletes have a higher pain sensation and pain tolerance thresholds. The measurement of pain intensity is carried out using subjective methods based on verbal and non-verbal information, describing the clinical characteristics of pain. These psychological methods include the use of scales and questionnaires. Objective methods (thermal, mechanical and electrical) are used only to determine the pain sensation and pain tolerance thresholds. The specificity and prevalence of chronic pain syndromes have resulted in the increased number of studies on healthy and physically active individuals. It seems that determination of the effects of exercise on the perception of pain might help in the understanding of mechanisms of pain generation.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2013, 3, 3; 27-30
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effective and innovative methods of scoliosis treatment
Autorzy:
Motow-Czyż, Marta
Powiązania:
https://bibliotekanauki.pl/articles/501453.pdf
Data publikacji:
2012
Wydawca:
Instytut Studiów Międzynarodowych i Edukacji Humanum
Tematy:
scoliosis
methods of scoliosis treatment
Opis:
-
Źródło:
Społeczeństwo i Edukacja. Międzynarodowe Studia Humanistyczne; 2012, 1(9); 375-388
1898-0171
Pojawia się w:
Społeczeństwo i Edukacja. Międzynarodowe Studia Humanistyczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
High-order long-step methods for solving semidefinite linear complementarity problems
Autorzy:
Preiss, M.
Stoer, J.
Powiązania:
https://bibliotekanauki.pl/articles/1839179.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
semidefinite linear complementarity problems
infeasible-interior-point methods
long-step methods
Opis:
The authors studied in Preiss and Stoer (2003) the analyticity properties of infeasible-interior-point paths encountered in the context of semidefinite linear complementarity problems. It will be shown that these results allow for the design of infeasible-interior-point methods of long-step type with an arbitrarily high order of local convergence for solving such problems.
Źródło:
Control and Cybernetics; 2003, 32, 3; 659-670
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods of controller synthesis using linear matrix inequalities and model predictive control
Autorzy:
Miller, A.
Rybczak, M.
Powiązania:
https://bibliotekanauki.pl/articles/135474.pdf
Data publikacji:
2015
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
controller synthesis
LMI
MPC
predictive controller
controller synthesis methods
optimization methods
Opis:
Controllers based on linear matrix inequalities (LMI) and model predictive control (MPC) both use optimization methods; there are however significant differences between them. In case of LMI controllers, optimization is carried out during controller synthesis, because LMI’s are an optimization tool that requires a linear programming problem being solved. With MPC controllers, however, optimization methods are not used as much in controller synthesis as in controller algorithm operation, to determine optimal control signal values based on the found minimum of the criteria function. A square function is used with boundaries from above and below, which requires a square programming problem, with boundaries for decision variables, being solved. In this paper controller synthesis methods using LMI and MPC are shown, with a focus on the steps that need to be performed, and a comparison of both methods.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2015, 43 (115); 22-28
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Methods Used in Economic Tendency Research
Autorzy:
Białowąs, Sylwester
Powiązania:
https://bibliotekanauki.pl/articles/973848.pdf
Data publikacji:
2011
Wydawca:
Szkoła Główna Handlowa w Warszawie
Tematy:
use of economic tendency research methods
Opis:
In 2008 the Department of Marketing Research of the Poznan University of Economics conducted a survey among the most important centres dealing with economic tendency surveys. Thematically the survey consisted of two blocks. First of them concerned the popularity of particular methods, ways of obtaining results (including self-conducted surveys and externally commissioned surveys), experience (years) in application of those methods, their most important advantages and areas of practical use. Second block consisted in the evaluation of predictive validity obtained by means of particular methods and the cost assessment of their use. The survey also dealt with a way of solving methodological problems, related to the use of particular methods, employed by the research centres i.e. popularity of ways of elimination of seasonality and trends from time series and effectiveness assessment of those filters. Whilst it is true that research community of economic trends cyclically, in connection with biennial CIRET conferences, exchanges information on the use of methods, the fact remains that this is the first survey which is a more formal attempt to sum up the applied research toolbox.
Źródło:
Prace i Materiały Instytutu Rozwoju Gospodarczego SGH; 2011, 86:Business Surveys, Business Cycles. Polish Contribution to the 30th CIRET Conference; 121-131
0866-9503
Pojawia się w:
Prace i Materiały Instytutu Rozwoju Gospodarczego SGH
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mixed Methods and Action Research: similar or different?
Autorzy:
Wiśniewska, Danuta
Powiązania:
https://bibliotekanauki.pl/articles/917694.pdf
Data publikacji:
2011-01-01
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Mixed methods
Action research
ELT
Opis:
This article attempts to analyse and compare ELT studies grounded solely in mixed methods and ELT action research studies based on a mixed methods approach in order to identify to what degree action research studies combining different methods in a single study comply with the principles of rigorous mixed methods study.
Źródło:
Glottodidactica. An International Journal of Applied Linguistics; 2011, 37, 1; 59-72
0072-4769
Pojawia się w:
Glottodidactica. An International Journal of Applied Linguistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Addressing research design problem in mixed methods research
Problem projektowania badań naukowych w metodach mieszanych
Autorzy:
Alavi, H.
Hąbek, P.
Powiązania:
https://bibliotekanauki.pl/articles/409858.pdf
Data publikacji:
2016
Wydawca:
STE GROUP
Tematy:
research design
quantitative research methods
qualitative research methods
mixed research methods
projektowanie badań
metody ilościowe
metody jakościowe
metody mieszane
Opis:
Alongside other disciplines in social sciences, management researchers use mixed methods research more and more in conduct of their scientific investigations. Mixed methods approach can also be used in the field of production engineering. In comparison with traditional quantitative and qualitative research methods, reasons behind increasing popularity of mixed research method in management science can be traced in different factors. First of all, any particular discipline in management can be theoretically related to it. Second is that concurrent approach of mixed research method to inductive and deductive research logic provides researchers with opportunity to generate theory and test hypothesis in one study simultaneously. In addition, it provides a better justification for chosen method of investigation and higher validity for obtained answers to research questions. Despite increasing popularity of mixed research methods among management scholars, there is still need for a comprehensive approach to research design typology and process in mixed research method from the perspective of management science. The authors in this paper try to explain fundamental principles of mixed research method, its typology and different steps in its design process.
Obok innych dyscyplin w naukach społecznych, również w dyscyplinie nauk o zarządzaniu naukowcy coraz częściej korzystają z metod mieszanych w prowadzeniu swoich badań naukowych. Metody mieszane mogę również znaleźć zastosowanie w badaniach z zakresu inżynierii produkcji. W porównaniu z tradycyjnymi ilościowymi i jakościowymi metodami badawczymi, przyczyn zwiększającej się popularności mieszanych metod badawczych w naukach o zarządzaniu jest wiele. Po pierwsze każdy obszar w zarządzaniu może być teoretycznie związany z nimi. Po drugie w mieszanych metodach badawczych jednoczesne podejście indukcyjne i dedukcyjne umożliwia naukowcom generowanie teorii oraz testowanie hipotez w jednym badaniu jednocześnie. Ponadto zapewnia lepsze uzasadnienie wyboru metody badawczej i wyższą wiarygodność uzyskanych odpowiedzi na pytania badawcze. Pomimo coraz większej popularności mieszanych metod badawczych, nadal istnieje potrzeba kompleksowego podejścia do projektowania procesu badawczego z punktu widzenia nauk o zarządzaniu. W niniejszym artykule autorzy starają się wyjaśnić podstawowe zasady leżące u podstaw metod mieszanych, ich typologii i różnych etapów w procesie ich projektowania.
Źródło:
Management Systems in Production Engineering; 2016, 1 (21); 62-66
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unusual graphic solutions and their place in classification of cartographic presentation methods
Autorzy:
Korycka-Skorupa, Jolanta
Kacprzyk, Izabela
Miłaszewska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/2030311.pdf
Data publikacji:
2008-06-01
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
visualisation
cartographic presentation methods
ordinal methods
choropleth map
Opis:
Examples of unusual and unconventional graphic solutions which we can often find in the times of fast developing computer technology are discussed in the article. Many of them are suggested by various GIS programs, few of them may be found in the press or on the Internet. This means that their users are people who are not associated with cartography and who are not familiar with the framework of cartographic methods.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2008, 13; 289-298
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inventorying Living Practices in Aquitaine (France): Methods and Issues
Autorzy:
Lamothe, Mathilde
Powiązania:
https://bibliotekanauki.pl/articles/470049.pdf
Data publikacji:
2015
Wydawca:
Poznańskie Towarzystwo Przyjaciół Nauk
Tematy:
cultural heritage
inventory
ethics
methods
Opis:
This article examines how the UNESCO International Convention for the Safeguarding of the Intangible Cultural Heritage (2003) is appropriated by the political and scientific bodies, which are responsible for organizing this inventory in their country with their own methodology (as UNESCO gives the liberty to choose the methodology for inventorying their intangible heritage). This reflection is based on the example of the inventorization of intangible cultural heritage coordinated in Aquitaine (France) since 2010, which highlights issues regarding researcher commitment, ethics, and the systemic view of cultural practices. In addition, the new digital collection tools are emphasized as „transcription of reality” and allow the recording, dissemination and valorisation of this heritage. Thus the modeling of intangible heritage inventorisation deserves to be explored in order to understand the heuristic issues surrounding these inventories, which are not only a simple application of a UNESCO legal instrument.
Źródło:
Our Europe. Ethnography – Ethnology – Anthropology of Culture; 2015, 4; 11-22
2299-4645
Pojawia się w:
Our Europe. Ethnography – Ethnology – Anthropology of Culture
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metody eksploracji danych i ich zastosowanie
Data mining methods and their applications
Autorzy:
Racka, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/446781.pdf
Data publikacji:
2015
Wydawca:
Mazowiecka Uczelnia Publiczna w Płocku
Tematy:
data mining
data mining methods
examples of data mining methods applications
data mining software
Opis:
Success in the financial market reach those companies that having fast access to data can it properly used. In modern databases and data warehouse are collected vast amounts of information, which man himself is not able to quickly analyze. For this purpose are used the data mining methods that enable the discovery of new knowledge, that is, rules, patterns and relationships in large databases. The aim of this article is to present the data mining methods and their applications. Article is divided into two parts. In the first part of the article explains the concept of data mining and data mining methods are discussed and provides examples of their applications. In the second part of the article presents the companies selling on the Polish market commercial data mining software and examples od free open-source data mining software are discussed.
Źródło:
Zeszyty Naukowe PWSZ w Płocku. Nauki Ekonomiczne; 2015, 1(21); 143-150
1644-888X
Pojawia się w:
Zeszyty Naukowe PWSZ w Płocku. Nauki Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rodzina modeli Lee-Cartera
Autorzy:
Ojrzyńska, Anna
Powiązania:
https://bibliotekanauki.pl/articles/587418.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Metody prognozowania
Metody statystyczne
Umieralność
Forecasting methods
Mortality
Statistical methods
Opis:
This paper presents a proposal for the application of selected models of the group of models using the Lee and Carter methodology for forecasting mortality rates. These include the original Lee-Carter, the Lee-Miller (2001) and Booth-Maindonald-Smith (2002) variants, and the more flexible Hyndman-Ullah (2005) and de Jong (2006) extensions. Based on estimates of mortality rates derived from the selected models was verified the ability to use these models to estimate mortality rates in Poland.
Źródło:
Studia Ekonomiczne; 2013, 162; 99-106
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical methods of solving equations of hydrodynamics from perspectives of the code FLASH
Autorzy:
Murawski, K.
Lee, D.
Powiązania:
https://bibliotekanauki.pl/articles/202336.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
numerical methods for hyperbolic equations
finite volume method
Godunov-type methods
Opis:
In this paper we review numerical methods for hydrodynamic equations. Internal complexity make numerical solutions of these equations a formidable task. We present results of advanced numerical simulations for a complex system with a use of a publicly available code, FLASH. These results proof that the numerical methods cope very well with this task.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2011, 59, 1; 81-91
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods Used in Undergraduate Study Programmes for Tourism and Sustainability at the University of Latvia
Autorzy:
Bērziņa, Kristīne
Ilze, Medne
Powiązania:
https://bibliotekanauki.pl/articles/1390623.pdf
Data publikacji:
2016
Wydawca:
Wyższa Szkoła Bankowa w Poznaniu
Tematy:
tourism
tourism education
sustainability
quantitative research methods
qualitative research methods
Opis:
Globalisation in education sector, intense competition between universities in Latvia, increase in requirements of applied teaching from private companies, growing exactingness from students – it all makes base to improve University curricula using different active teaching techniques for better knowledge capture. In the case study of University of Latvia tourism study programme authors included practice of active teaching method application used to improve student understanding and competences including research, surveys, observations, shadowing, monitoring and register of the tourist tracks, expert interviews and industry seminars, discussions and interviews with industry stakeholders, field trips, different tourism sector enterprise and organisation visits inspections, colloquiums, research result presentations in seminars and conferences, knowledge enhancing for sustainability, best practices and systems used by other countries. Many of active learning methods are as additional activities for students not included in the compulsory part of studies, therefore it is needed to establish an additional separate entity for tourism and sustainability activities for applied teaching and research at university – Tourism and Sustainability Research Laboratory. Separate research entity gives possibility to involve interested students from different study programmes and cooperation with other faculties.
Źródło:
Studia Periegetica; 2016, 15(1); 133-143
1897-9262
2658-1736
Pojawia się w:
Studia Periegetica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of Preferred Didactic Forms and Methods in Homeschooling
Autorzy:
Rochovská, Ivana
Droščák, Martin
Šilonová, Viera
Powiązania:
https://bibliotekanauki.pl/articles/1963646.pdf
Data publikacji:
2020-09-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
homeschooling
homeschooling methods and forms
parents of homeschooled children
classical homeschooling methods and forms
Opis:
The research dealt with opinions of homeschooling parents on preferred homeschooling methods and forms. Using the questionnaire method, it mapped opinions of 78 parents from Slovakia, the Czech Republic and Poland. It examined the influence of selected variables, i.e. age of parents and number of homeschooled children, on the preference for methods and forms of education. On the basis of research findings it could be stated that younger respondents preferred unschooling more than older respondents. The older respondents, on the other hand, preferred classical teaching methods and forms more. It was also found that the number of homeschooled children had no influence on parents’ choice of homeschooling methods and forms.
Źródło:
The New Educational Review; 2020, 61; 13-25
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods of finding and identyfication of pathogens in seeds.
Autorzy:
Marcinkowska, Joanna Z.
Powiązania:
https://bibliotekanauki.pl/articles/2198875.pdf
Data publikacji:
2002-06-23
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
detection
identification
methods
seedborne pathogens
Opis:
Methods for detection and identification of seedborne pathogens are discussed. Traditional, immunodiagnostic and nucleic acid-based methods are briefly described including their use for fungi, bacterial and viral pathogens finding and identification in seeds.
Źródło:
Plant Breeding and Seed Science; 2002, 46, 1; 31-48
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Superconvergence in the finite element method
Autorzy:
Leyk, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/748740.pdf
Data publikacji:
1982
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Finite elements, Rayleigh-Ritz and Galerkin methods, finite methods
Opis:
MR0707821
For some variants of the finite element method there exist points having a remainder value or a derivation remainder remarkably less than those given by global norms. This phenomenon is called superconvergence and the points are called superconvergence points. The generalized problem corresponding to (1) is as follows: Let Hk(Ω) be Sobolev space and Hk0(Ω) the completion of the space C∞0(Ω) with norm ∥⋅∥k,Ω. Find u∈H10(Ω) such that for each v∈H10(Ω), (2) a(u,v)=(f,v)0 holds, where a(u,v)=∫Ω(∑n|α|=0aα(x)DαuDαv)dx, (f,v)0=∫Ωf(x)v(x)dx, Dα=Dα11⋯Dαnn,1.5pt Dαiiu=∂αiu/∂xαii, i=1,n¯¯¯¯¯¯¯¯. The approximate problem of the finite element variant considered is the following: Find uh∈Vh such that (3) for all v∈Vh, a(uh,v)=(f,v)0. The main result is the theorem: Let ai∈C(Ω¯), D1ai,D2ai∈L∞(Ω),i=1,2,∥σ∥∞L(Ω)≤σ,f∈L2(Ω). Suppose the eigenvalues of the operator L are different from zero, and u∈H4(Ω)∩H10(Ω). Then there exists h0 such that for h≤h0, h2∑P∈G|grad(u−uh)(P)|≤Ch3(|u|3+|u|4), where u and uh are the solutions of problems (2) and (3), respectively, and C is some constant independent of h. Further, |u|k={∫Ω(∑|α|=k(Dαu)2)dx}1/2, G=⋃N1N2i=1Fi(R), R={(±3√/3,±3√/3)} is a Gauss point set in the quadrant S={(ξ1,ξ2):|ξk|≤1,k=1,2}, and Fi(F(1)i,F(2)i):S→ei, ei an element; F(1)i(ξ1,ξ2)=x(i)0+h1ξ1/2, F(2)i(ξ1,ξ2)=y(i)0+h2ξ2/2, and (x(i)0,y(i)0) is the middle element.
Źródło:
Mathematica Applicanda; 1982, 10, 20
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods of machine tool error compensation
Autorzy:
Turek, P.
Jędrzejewski, J.
Modrzycki, W.
Powiązania:
https://bibliotekanauki.pl/articles/99544.pdf
Data publikacji:
2010
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
machine tool
errors compensation methods
Opis:
The most important tendencies in the development of modern machine tools are pointed out, including the improvement of their design and development of error compensation methods. An overview of the most popular and useful error compensation methods for machine tools is presented. Based on examples, the effectiveness and limitations of each method are discussed. An integrated 5-axis machine tool behaviour model is presented, which assists in the elaboration of an error model required for the compensation purposes.
Źródło:
Journal of Machine Engineering; 2010, 10, 4; 5-25
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Notification methods in wireless systems
Autorzy:
Nawrocki, P.
Jakubowski, M.
Godzik, T.
Powiązania:
https://bibliotekanauki.pl/articles/305806.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
notification methods
wireless systems
energy consumption
Opis:
Recently, there has been an increasing need for secure, efficient, and simple notification methods for wireless systems. Such systems are meant to provide users with precise tools best suited for work or leisure environments, and a lot of effort has been put into creating a multitude of applications. At the same time, however, not much research has been made into determining which of the available protocols are best suited for each individual task. A number of basic notification methods are presented here, and tests have been performed for the most-promising ones. An attempt has been made to determine which of the methods have the best throughput, latency, security, and other characteristics. A comprehensive comparison is provided, which can be used to select the right method for each individual project. Finally, conclusions are provided, and the results from all of the tests conducted are discussed.
Źródło:
Computer Science; 2016, 17 (4); 519-539
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methodology and Teaching Methods of the Study Course: Theory of Cooperation in Education
Autorzy:
ZHURAVSKA, NINA
MARIIA, LYCHUK
Powiązania:
https://bibliotekanauki.pl/articles/455195.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Rzeszowski
Tematy:
methodology
teaching methods
methods of professions
learning theory
theory of cooperation in education
Opis:
Scientific methods that are part of knowledge – it is whole arsenal of accumulated research methods and stage of scientific activity (techniques, methods) used in the process of scientific activity in this particular cycle. In particular, problems and hypotheses is scientific knowledge also, but they are more significant than stages of scientific activity. Scientific activity – intellectual creative activity aimed at obtaining and use of new knowledge. It comprises the steps of obtaining scientific production: 1) formulation (appearance) of the problem; 2) construction of hypotheses and using those that already exist; 3) creation and implementation of new methods of research aimed at proving the hypotheses; 4) summary the results of scientific activity. It is necessary to mean that the main product that meets the objectives and problems which are resolved, science gets only at the end of the cycle in the form of laws and theories. In the intermediate stages the science gets a by-product a part of which is used in the same cycle, and part goes to replenish the knowledge and the formation of new cycles. Scientific activity exists in various forms, such as: scientific and research activity; scientific and organizational activity; scientific and educational activity; scientific and information activity; scientific and support activity, etc. (Розвиток науки…).
Źródło:
Edukacja-Technika-Informatyka; 2017, 8, 3; 38-42
2080-9069
Pojawia się w:
Edukacja-Technika-Informatyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie metod symulacji komputerowej w badaniach hałasu przemysłowego
The use of computer simulation methods in industrial noise research
Autorzy:
Kuboszek, A.
Powiązania:
https://bibliotekanauki.pl/articles/112730.pdf
Data publikacji:
2016
Wydawca:
STE GROUP
Tematy:
hałas
metody symulacyjne
metody geometryczne
noise
simulation methods
geometric methods
Opis:
W artykule przedstawiono przykłady wykorzystania komputerowych metod symulacji zjawisk akustycznych w pracach projektowych zmierzających do opracowania optymalnych sposobów ograniczenia hałasu na stanowisku pracy. Zastosowanie symulacji komputerowej daje możliwość opracowania strategii prac wyciszeniowych najkorzystniejszej pod kątem skuteczności akustycznej oraz opłacalności ekonomicznej.
This paper presents examples of using computer-based methods of acoustic simulation for optimal designing of noise reduction projects at the workplaces. Using of the acoustic simulations provides the opportunity to develop optimal strategies for noise reduction in terms of acoustic efficiency and cost-effectiveness.
Źródło:
Systemy Wspomagania w Inżynierii Produkcji; 2016, 2 (14); 199-210
2391-9361
Pojawia się w:
Systemy Wspomagania w Inżynierii Produkcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Visual data analysis with computational intelligence methods
Autorzy:
Kruse, R.
Steinbrecher, M.
Powiązania:
https://bibliotekanauki.pl/articles/200693.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
visual data analysis
computational intelligence methods
Opis:
Visual data analysis is an appealing and increasing field of application. We present two related visual analysis approaches that allow for the visualization of graphical model parameters and time-dependent association rules. When the graphical model is defined over purely nominal attributes, its local structure can be interpreted as an association rule. Such association rules comprise one of the most prominent and wide-spread analysis techniques for pattern detection, however, there are only few visualization methods. We introduce an alternative visual representation that also incorporates time since patterns are likely to change over time when the underlying data was collected from real-world processes. We apply the technique to both an artificial and a complex real-life dataset and show that the combined automatic and visual approach gives more and faster insight into the data than a fully-automatic approach only. Thus, our proposed method is capable of reducing considerably the analysis time.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2010, 58, 3; 393-401
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variable multistep methods
Autorzy:
Marz, Roswitha
Powiązania:
https://bibliotekanauki.pl/articles/719375.pdf
Data publikacji:
1984
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Źródło:
Banach Center Publications; 1984, 13, 1; 407-424
0137-6934
Pojawia się w:
Banach Center Publications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Large-scale nonlinear programming algorithm using projection methods
Autorzy:
Białoń, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/729340.pdf
Data publikacji:
2000
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
nonlinear optimization
large scale optimization
projection methods
zigzagging
Opis:
A method for solving large convex optimization problems is presented. Such problems usually contain a big linear part and only a small or medium nonlinear part. The parts are tackled using two specialized (and thus efficient) external solvers: purely nonlinear and large-scale linear with a quadratic goal function. The decomposition uses an alteration of projection methods. The construction of the method is based on the zigzagging phenomenon and yields a non-asymptotic convergence, not dependent on a large dimension of the problem. The method preserves its convergence properties under limitations in complicating sets by geometric cuts. Various aspects and variants of the method are analyzed theoretically and experimentally.
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2000, 20, 2; 171-194
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
MODERN METHODS OF VALUATION OF ENTERPRISES AND ITS FUTURE CHALLENGES
Autorzy:
Miciuła, Ireneusz Maciej
Powiązania:
https://bibliotekanauki.pl/articles/659061.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
METHODS OF VALUATION OF ENTERPRISES
Opis:
  In today’s world the valuation of the company as a measure of the efficiency of its operations is of great importance for the functioning of the future. Knowledge about how much the company is worth is of fundamental importance at the time of a commercial transaction, as well as the possibility of its business.   Presents the objectives of the valuation of the company and company specific life stages at which such a valuation is required. In the paper the classification of valuation methods used in modern enterprises. On this basis, the methodology of the valuation by the concept of MDI–R (Assets, Income, Intellectual Capital – Market), which measures the effectiveness of a broad spectrum of activities of the company and in accordance with the current characteristics of a goodvaluation seeks to determine the fair value of the company. At the same time an attempt to draw attention to the risks arising from modern methods of business valuation and its challenges in the future.
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2014, 2, 300
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Axiomatization of divisor methods and weakly degressive proportionality
Autorzy:
Dniestrzański, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/421295.pdf
Data publikacji:
2017
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
degressive proportionality
fair division
axiomatization of divisor methods
Opis:
The paper analyzes the differences between weakly degressive proportionality and proportional allocations represented by divisor methods. The analysis is accomplished by the axiomatization of divisor methods in line with Balinski and Young.
Źródło:
Didactics of Mathematics; 2017, 14(18); 19-26
1733-7941
Pojawia się w:
Didactics of Mathematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel measurement methods in the evaluation of biomaterials’ properties
Autorzy:
Pabjańczyk-Wlazło, E.
Komisarczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/285742.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
biomaterials
implants
measurement methods
Źródło:
Engineering of Biomaterials; 2016, 19, 138; 101
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
O metodach wirtualnych w paradygmacie obiektowym
Virtual methods in object paradigm
Autorzy:
Janusz, Robert
Powiązania:
https://bibliotekanauki.pl/articles/690636.pdf
Data publikacji:
2007
Wydawca:
Copernicus Center Press
Tematy:
object oriented programming
virtual methods
Opis:
The role of virtual methods in object oriented programming is presented. The object oriented approach is extended to the philosophical domain of rational thinking and virtual methods are used as a link between scientific and philosophical domains.
Źródło:
Zagadnienia Filozoficzne w Nauce; 2007, 41; 125-131
0867-8286
2451-0602
Pojawia się w:
Zagadnienia Filozoficzne w Nauce
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal control problem for Roesser systems
Autorzy:
Biły, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/747892.pdf
Data publikacji:
1990
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Methods of nonlinear programming type
Computational methods
Discrete-time systems
Opis:
.
The quadratic performance index in a fixed rectangle for the Roesser model of two-dimensional, linear, stationary, discrete systems is considered. Using a method of transformation for the System and the performance index, the problem of finding the optimal sequence of control vectors is solved by a method of mathematical programming. The simple numerical example illustrates the presented method.
Źródło:
Mathematica Applicanda; 1990, 18, 32
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A method for solving the Neumann problem for the Poisson equation on the exterior of a poligon
Autorzy:
Roliński, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/747369.pdf
Data publikacji:
1993
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Boundary element methods
Finite elements, Rayleigh-Ritz and Galerkin methods, finite methods
Opis:
.
This paper is concerned with a numerical method for solving the problem Δu=f in Ωc (=intR2\Ω), (du/dn)|Γ=g, where ΩR2 is a polygon and Γ is the boundary of Ω. The method is based on coupling finite and boundary element techniques. To compensate for the loss of smoothness of the solution u near the corners of the polygon Ω we refine the triangulation without changing the number of triangles. We apply the affine triangular Lagrangean element of degree kN and the Lagrangean boundary element of degree k−1 to obtain the optimal order of convergence via the Galerkin projection.
Źródło:
Mathematica Applicanda; 1993, 22, 36
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The optimal explicit unconditionally stable box scheme
Autorzy:
Moszyński, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/747543.pdf
Data publikacji:
1997
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Finite difference methods
Stability and convergence of numerical methods
Opis:
.
The finite difference “box” scheme, (see also [1],[2]), is considered on the simplest possible model of single first order linear hyperbolic equation: ut+mux=0 with constant, coefficient m, and one space variable. The optimal version of the scheme, which is nonoscilating and unconditionally stable with respect to the initial and boundary conditions, is derived in the class of box schemes of the order at, least one. If apropriately iterated, this ścinane may be applied to general systems of quasilinear first order hyperbolic equations in one space variable, as an explicit, unconditionally stable solver. For more than one space variable this solver is applicable via splitting (see [3]).
Źródło:
Mathematica Applicanda; 1997, 26, 40
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods for stimulating creativity in production engineering
Autorzy:
Wasilewska, B.
Knosala, R.
Powiązania:
https://bibliotekanauki.pl/articles/406712.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
creativity
stimulating methods
case study
innovation management
Opis:
The article presents possibilities of using fields of creative problem solving in engineering issues. Fields associated with so-called advanced creativity allow to combine stimulation of creativity with seeking innovative solutions. The article introduces stages leading to creative ideas as shown by two case studies of studied companies. The authors, in line with their research activity, highlighted the merits of forming creative sessions and creative teams in the company.
Źródło:
Management and Production Engineering Review; 2014, 5, 4; 76-84
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pomiary impedancji metodami algorytmicznymi
Algorithmic methods of impedance measurement
Autorzy:
Augustyn, J.
Powiązania:
https://bibliotekanauki.pl/articles/156617.pdf
Data publikacji:
2006
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
pomiary impedancji
metody algorytmiczne
impedance measurement
algorithmic methods
Opis:
W artykule przedstawiono metody pomiaru impedancji wykorzystujące ciągi próbek sygnałów napięcia i prądu do wyznaczenia ich składowych ortogonalnych za pomocą odpowiedniego algorytmu przetwarzania danych. W zależności od przyjętego modelu sygnałów zaproponowano dwie grupy algorytmów wykorzystujące metodę najmniejszych kwadratów oraz realizujące pośrednią i bezpośrednią metodę pomiaru. Pokazano przykład realizacji jednej z zaproponowanych metod w scalonym przetworniku impedancji.
In this paper some algorithms based on the digital signal processing for the evaluation of impedance components in circuits with sampling sensor have been presented. Dependently on the accepted model of applied signals two groups of fitting sine wave algorithms have been described. Both of them are based on the least mean square technique. The first one reconstructs indirect measurement method. In the second group of algorithms the unknown impedance components are estimated by direct method. Additionally, an example of the application of one of proposed methods in the integrated impedance converter system has been given.
Źródło:
Pomiary Automatyka Kontrola; 2006, R. 52, nr 4, 4; 14-16
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The coexistence of controlling and other management methods
Autorzy:
Bieńkowska, A.
Zgrzywa-Ziemak, A.
Powiązania:
https://bibliotekanauki.pl/articles/406599.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
management methods
controlling
coexistence
organizational effects
Opis:
The effects of the coexistence of Controlling and other management methods (benchmarking, BPM, BPR, BSC, Competency-based Management, CRM, ERP, KM, LM, Outsourcing, Six Sigma, TQM) have been analysed. The complexity and dynamics of modern management systems in fact require simultaneous and/or sequential application of many concepts and methods of management. Controlling is a comprehensive method with an interdisciplinary character, which acts as an integrating plane for many methods and techniques. The coexistence of controlling with other management methods depends on the type of relationship between controlling and these methods. In the main, however, coexistence should be beneficial for an organization. Theoretical concepts on the relations between controlling and other methods are thus empirically tested by analysing the effect of using selected management methods, both in conjunction with controlling, as well as separately (business, efficiency, management, social and environmental effects). One-Way ANOVA was used based on a sample of 167 Polish organizations.
Źródło:
Operations Research and Decisions; 2014, 24, 2; 5-33
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Alternating direction Galerkin method for quasilinear parabolic equations
Autorzy:
Dryja, M.
Powiązania:
https://bibliotekanauki.pl/articles/748658.pdf
Data publikacji:
1979
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Finite elements, Rayleigh-Ritz and Galerkin methods, finite methods
Opis:
MR0549983
Consider the following parabolic equation: (1) ∂u/∂t−∑2i=1(d/dxi)ai(x,t,u,D1u,D2u)+a0(x,t,u,D1u,D2u)=f(x,t), x=(x1,x2)∈Ω⊂R2, t∈[0,T], with the initial value condition u(x,0)=u0(x), x∈Ω, and with the boundary value condition u(x,t)=0, x∈∂Ω, t∈[0,T]. For the solution of equation (1) the author proposes a variational-difference method. Namely, he approximates equation (1) by Galerkin's method with respect to the variables x1,x2 and by the finite-difference method with respect to the variable t. Under some assumptions concerning the coefficients ai, i=0,1,2, an estimate of the error is given.
Źródło:
Mathematica Applicanda; 1979, 7, 15
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Artificial Intelligence in Medicine
Sztuczna inteligencja w medycynie
Autorzy:
Wajs, W.
Powiązania:
https://bibliotekanauki.pl/articles/274631.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
metody klasyfikacji
metody korelacji
systemy ekspertowe
sztuczne sieci immunologiczne
metody statystyczne
classification methods
correlation methods
expert systems
artificial immune network
statistics methods
Opis:
Medicine is a discipline that requires both judgment and action. Information science can help in several aspect. It can help the physician in collecting complete and relevant data. It can support the physician by providing access to the rapidly increasing sets of medical knowledge through different kinds of the data bases. It can facilitate the management of medical records which may be used for clinical follow-up of patients, clinical research, evaluation of medical action and education. In all these aspects, information science gives indirect help to medical decision.
Medycyna jest dyscypliną, która wymaga zarówno oceny jak też działania. Informatyka może być pomocna w wielu aspektach. Informatyka może pomóc lekarzowi w zbieraniu użytecznych danych. Techniki komputerowe mogą pomóc lekarzowi w dostępie do dużych zbiorów danych poprzez różnego rodzaju bazy danych. Informatyka dostarcza także licznych metod, które mogą mieć zastosowanie w systemach wspomagania decyzji oraz w procesach uczenia.
Źródło:
Pomiary Automatyka Robotyka; 2011, 15, 12; 106-108
1427-9126
Pojawia się w:
Pomiary Automatyka Robotyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical methods for fast magnetoacoustic waves in solar coronal loops
Autorzy:
Gruszecki, M.
Murawski, K.
Powiązania:
https://bibliotekanauki.pl/articles/1943226.pdf
Data publikacji:
2009
Wydawca:
Politechnika Gdańska
Tematy:
numerical simulations
Godunov methods
magnetohydrodynamics
Opis:
Numerical methods for standing fast magnetoacoustic kink waves in an isothermal solar coronal slab with a field aligned flow are considered. Such waves are triggered impulsively by a velocity pulse that is initially launched in an ambient medium. The spatial and temporal signatures of these waves are determined by solving two-dimensional, ideal magnetohydrodynamic equations numerically. The Ramses code which resolves complex spatial structures by adopting an adaptive mesh refinement technique and shock-capturing capabilities is used. The numerical results show that spatial and temporal wave signatures are reminiscent to the recent observational findings.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2009, 13, 1-2; 75-81
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some variants of projection methods for large nonlinear optimization problems
Autorzy:
Białoń, P.
Powiązania:
https://bibliotekanauki.pl/articles/307702.pdf
Data publikacji:
2003
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
projection methods
penalty shifting method
nonlinear optimization
Opis:
Two ideas of modifying projection methods for the case of smooth nonlinear optimization are presented. Projection methods were originally successfully used in solving large- scale linear feasibility problems. The proposed instantiations of projection methods fall into two groups. One of them is a decomposition approach in which projections onto sets are realized as optimization problems which themselves involve much portions of original problem constraints. There are two subproblems: one build with linear constraints of the original problem and the second one build with original nonlinear constraints. These approaches use special accelerating cuts so that the separation of nonlinear and linear constraints can be effective and some problem sparsity preserved. The second group bases on penalty-shifting/multiplier methods and draws from the observation that unconstrained subproblems obtained there may solve very slowly due to their nonsmooth character. Thus it is proposed to solve them with modified projection methods which inherit from conjugate gradient methods a multi-dimensional subspace in one epoche.
Źródło:
Journal of Telecommunications and Information Technology; 2003, 3; 43-49
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Forest ecosystem services – assessment methods
Autorzy:
Kornatowska, Bożena
Sienkiewicz, Jadwiga
Powiązania:
https://bibliotekanauki.pl/articles/2045717.pdf
Data publikacji:
2018
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
forest functions
non-market forest values
economic valuation methods
biodiversity
Opis:
Forest ecosystems represent the most important values of natural assets. In economic valuation techniques, to estimate the value of forest ecosystem services, the attention is still focused mainly on their market values, i.e. the value of benefits measured in the economic calculation based, first of all, on the price of timber. The valuation of natural resources is currently supported by considerations of the global policy, in order to strengthen the argumentation justifying the need to incur expenditure related to the protection of biodiversity. There is increasing evidence that biodiversity contributes to forest ecosystem functioning and the provision of ecosystem services. Natural capital of forests can be consumed directly as food, wood and other raw materials or indirectly – by benefitting from purified water and air, safeguarded soils or protected climate. At the same time, forest ecosystems provide us with a range of intangible values – scientific, cultural, religious as well as encompass heritage to pass on to future generations. In the era of increasing pressure on the use of free public goods (natural resources), it is necessary to improve understanding of the role of forests in creating national natural capital, and in enhancing the quality of human life. All things considered, the so called non-market forest ecosystem services may have a much higher value than the profits from the production of timber and raw materials. Needless to say, non-market values of forest ecosystems are of great importance for the quality of human life, and the awareness of this should translate into social behavior in the use of natural resources. This paper reviews the methods to estimate the value of forest ecosystem services in view of recently acknowledged paradigm to move forward from economic production to sustainable human well-being.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2018, 60, 4; 248-260
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical solutions of magnetohydrodynamic equations
Autorzy:
Murawski, K.
Powiązania:
https://bibliotekanauki.pl/articles/202271.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
numerical methods for hyperbolic equations
finite volume method
Godunov-type methods
magnetohydrodynamics
Opis:
In this paper we review several mathematical aspects in numerical methods for magnetohydrodynamic equations. The intrinsic complexity and the requirements of the selenoidity condition make numerical solutions of these equations a formidable task. We present results of advanced numerical simulations for a complex system, which reveal that the numerical methods cope very well with this task.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2011, 59, 2; 219-226
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Godunov-type methods for two-component magnetohydrodynamic equations
Autorzy:
Murawski, K.
Tanaka, T.
Powiązania:
https://bibliotekanauki.pl/articles/201296.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
two-component magnetohydrodynamic equations
Godunov-type methods
Opis:
This paper is concerned with a numerical solutions of two-component magnetohydrodynamic equations. While a hyperbolic system of wave equations admits a shock solution as a result of the selenoidality condition the MHD equations are not strictly hyperbolic. As a consequence of that these equations require special numerical treatment. An application of a resulting numerical code to a problem of solar wind interaction with the ionosphere of the planet Venus is presented.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2012, 60, 2; 343-348
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ewolucja metod wartościowania stanowisk pracy w ujęciu literaturowym
Evolution of job evaluation methods in literature aspect
Autorzy:
Olek, Krystian
Powiązania:
https://bibliotekanauki.pl/articles/419933.pdf
Data publikacji:
2015
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
job evaluation
summary methods of evaluation
analytical methods of evaluation
synthetic criterion
analytical criterion
competence evaluation
Opis:
The theme of the article is a synthetic presentation of various methods of job evaluation and showing the direction of changes in defining value of work positions. Human capital as the most important resource of the organization should be organized in the best way and rewarded in the most efficient way. The changing nature of the work content forces managers to adapt the techniques and methods’ evaluation to changing working conditions. The first part of the paper characterizes methods and techniques of job evaluation. The second part presents trends in constructing new methods, which are useful for modern businesses.
Źródło:
Nauki o Zarządzaniu; 2015, 4 (25); 78-90
2080-6000
Pojawia się w:
Nauki o Zarządzaniu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Samoleczenie betonu. Cz. 2, Metody biologiczne i specjalne
Concrete self-healing. Part 2, Biological and special methods
Autorzy:
Zając, B.
Gołębiowska, I.
Powiązania:
https://bibliotekanauki.pl/articles/2073204.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
samonaprawa
beton
metody biologiczne
metody specjalne
self-healing
concrete
biological methods
special methods
Opis:
W tej części pracy opisano metody biologiczne i specjalne samoleczenia betonu oraz przeprowadzono analizę ich efektywności. Efektywność metod biologicznych zależy głównie od żywotności zarodników bakterii (która powinna być dłuższa od cyklu życia budowli betonowej) i od obecności wody przeciekającej przez rysę. Efektywność ta ma charakter losowy z powodu przypadkowości równoczesnego przecięcia rysą kapsułek z bakterią i z pożywieniem. Samoleczący kompozyt cementowy ECC ze względu na efektywnie przebiegający proces samoleczenia wewnętrznego posiada większość cech charakteryzujących zrównoważony materiał samoleczący. Efektywność metody samoleczenia betonu z dodatkami mineralnymi będzie zależała od ich ilościowego i jakościowego doboru.
In this part of the paper, biological and special methods are described and analysis of their effectiveness is conducted. Effectiveness of biological methods depends primarily on vitality of bacterial spores (which must be longer than cycle of life of concrete construction), and also on the presence of water leaking through the crack. Effectiveness is random in its nature because of randomness of simultaneous cut by crack of the capsules with bacteria and the food. Engineered Cementitious Composite (ECC) due to efficient running process of autogenous self-healing possesses most of features characterizing sustainable self-healing material. Effectiveness of methods of concrete self-healing with mineral additives depends on their quantitative and qualitative selection.
Źródło:
Inżynieria i Aparatura Chemiczna; 2016, 5; 210--211
0368-0827
Pojawia się w:
Inżynieria i Aparatura Chemiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Accelerated methods for estimating the durability of plain bearings
Autorzy:
Czerniec, M.
Powiązania:
https://bibliotekanauki.pl/articles/103001.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
enhanced numerical methods
durability evaluation
plain bearings
accuracy deviations
Opis:
The paper presents methods for determining the durability of slide bearings. The developed methods enhance the calculation process by even 100000 times, compared to the accurate solution obtained with the generalized cumulative model of wear. The paper determines the accuracy of results for estimating the durability of bearings depending on the size of blocks of constant conditions of contact interaction between the shaft with small out-of-roundedness and the bush with a circular contour. The paper gives an approximate dependence for determining accurate durability using either a more accurate or an additional method.
Źródło:
Advances in Science and Technology. Research Journal; 2014, 8, 23; 73-79
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metody realizacji robót rozbiórkowych
Realization methods of demolition works
Autorzy:
Rawska-Skotniczny, A.
Nalepka, M.
Powiązania:
https://bibliotekanauki.pl/articles/128938.pdf
Data publikacji:
2016
Wydawca:
PWB MEDIA Zdziebłowski
Tematy:
demolition
methods
equipment
rozbiórka
metody
sprzęt
Opis:
W artykule omówiono podstawowe metody prowadzenia prac rozbiórkowych obiektów budowlanych. Podano ogólne zasady dotyczące poszczególnych metod. W rzeczywistych sytuacjach nie stosuje się zwykle jednej metody, lecz używa się ich zamiennie, w zależności od potrzeb i możliwości rozbiórki.
Basic methods of leading demolition works of buildings have been described in the article. General principles regarding respective methods have been presented. In actual situations it is very rare to use only one method. They are used interchangeably, depending on the requirements and possibilities of the demolition case.
Źródło:
Builder; 2016, 20, 2; 84-87
1896-0642
Pojawia się w:
Builder
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some problems connected with the absolute stability of explicit one-step methods
Autorzy:
Szyszkowicz, Mieczysław
Powiązania:
https://bibliotekanauki.pl/articles/748597.pdf
Data publikacji:
1985
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Stability and convergence of numerical methods
Opis:
.
Regions of absolute stability for several examples of Runge-Kutta methods, Bobkov methods, Richardson extrapolation of Runge-Kutta methods are investigated. For the Richardson extrapolation of Runge-Kutta methods the method with maximal order of convergence is found.
Źródło:
Mathematica Applicanda; 1985, 13, 26
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Legal Regulations and Methods Neutralising Expired Food Products
Autorzy:
Kazimierowicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/123824.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
expired food products
neutralising organic waste
legal regulations
methods neutralising
Opis:
In retail chains, an expired product is withdrawn from sales and becomes waste which should be managed properly. Expired products cannot be placed back on the market for sale, sold at a reduced price or in promotion. The losses in the food trade result mainly from an inefficient organisation and excessive stocks that cause food expiration and perishability. In this chain, the expired food products, which in majority go to landfill sites, constitute a significant part. This article presents the legal regulations regarding neutralisation of expired food products together with their utilisation possibilities. One of the basic documents is the Directive 2009/28/EC of the European Parliament and the Council of 23 April 2009 on the promotion of the use of energy from renewable sources. The second important document is the Directive of the Council 1999/31/EC on the landfill of waste. According to the Regulation No 852/2004 of 29 April 2004 on the hygiene of foodstuffs, every facility should have elaborated procedures describing the manner of handling foodstuffs not meeting the requirements of health quality as well as food waste. One of the most often applied methods to manage waste is its thermal treatment. Incineration is problematic in environmental and social aspects. It includes numerous requirements and legal restrictions. Pyrolysis is an alternative to incineration. Composting in aerated bed is a widely known utilisation method of biological waste from agriculture and agri-food industry. Mineralisation of organic substances in biogas plants is a method for controlled course of processes aiming at the production of greenhouse gases, the negative effect on meteorological conditions of which is unquestionable in many social circles. Biomass fermentation in biogas plants is prospective because it enables to limit the emission of methane during uncontrolled biochemical processes accompanying landfill of waste.
Źródło:
Journal of Ecological Engineering; 2018, 19, 6; 217-224
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spectral and integral methods of determining parameters in selected electric arc models with a forced sinusoid current circuit
Autorzy:
Sawicki, A.
Haltof, M.
Powiązania:
https://bibliotekanauki.pl/articles/140881.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
electric arc
Mayr model
Cassie model
Pentegov model
spectral methods
integral methods
Opis:
The paper discusses problems arising in attempts to accurately represent dynamic processes of an electric arc by means of simple mathematical models. It describes the properties of the universal Pentegov model, employing any shape of static voltagecurrent characteristics of an arc. Next, it presents spectral and integral measuring methods for determining arc parameters in the Mayr, Cassie and Pentegov models of the electric arc with a forced sinusoid current circuit, with the raising static characteristics of hyperbolic-flat and hyperbolic-linear shape. The influence is discussed of the random power supply disturbances on errors of determining the mathematical model parameters.
Źródło:
Archives of Electrical Engineering; 2016, 65, 1; 87-103
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Samoleczenie betonu. Cz. 1, Metody naturalne i chemiczne
Concrete self-healing. Part 1, Natural and chemical methods
Autorzy:
Zając, B.
Gołębiowska, I.
Powiązania:
https://bibliotekanauki.pl/articles/2073138.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
samonaprawa
beton
metody naturalne
metody chemiczne
self-healing
concrete
natural methods
chemical methods
Opis:
Pracę dotyczącą samoleczenia betonu podzielono na dwie części. W części pierwszej opisano metody naturalne i chemiczne oraz przeprowadzono analizę ich efektywności. Efektywność metod naturalnych samoleczenia betonu zależy od składu jego matrycy, który determinuje możliwości wystąpienia reakcji chemicznych w chwili tworzenia się rys oraz od obecności wody i dwutlenku węgla. Efektywność metod chemicznych zależy przede wszystkim od rodzaju czynnika leczącego, liczby nośników (kapsułek, rurek, układu sieci naczyń), stopnia ich rozproszenia w betonie, ich średnicy. Nośniki czynnika leczącego powinny być wykonane z materiałów niereaktywnych z betonem i czynnikiem leczącym i nie mogą ulec uszkodzeniu podczas mieszania. Stosowanie rurek i sieci naczyń możliwe jest tylko w przypadku elementów prefabrykowanych, ponieważ wymagane jest ręczne wprowadzenie ich do formy przed wypełnieniem jej betonem.
This work is divided into two parts. In the first one, natural and chemical methods are described and the analysis of their effectiveness is presented. The effectiveness of natural methods of self-healing concrete depends on the composition of matrix, which determines the possibility of occurrence of chemical reactions at the moment of cracks formation, and also depends on the presence of water and carbon dioxide. The effectiveness of chemical methods depends primarily on a type of healing agent, number of carriers (capsules, tubes, vascular networks), degree of dispersion of carriers in concrete and their diameter. The carriers of healing agent should be made of materials which are nonreactive with concrete and healing agent. The carriers also cannot be damaged during mixing. The application of tubes and vascular networks is only possible for prefabricated elements, because it is required to manually introduce them to a form before filling it with concrete.
Źródło:
Inżynieria i Aparatura Chemiczna; 2016, 4; 160--161
0368-0827
Pojawia się w:
Inżynieria i Aparatura Chemiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Współczesne militarne zagrożenia powietrzne i metody ich oceny
Contemporary military air threats and methods for their evaluation
Autorzy:
Dobija, K.
Powiązania:
https://bibliotekanauki.pl/articles/120138.pdf
Data publikacji:
2014
Wydawca:
Akademia Sztuki Wojennej
Tematy:
wojna
zagrożenie lotnicze
metody oceny zagrożenia
warfare
air threat
evaluation methods
methods of hazard evaluation
Opis:
Novadays the success of the military operations largely on the domination in the airspace. Although the traditional air threats, fixed wing and rotary wing aircraft, are still useful and formidable, the 21st century proliferation trend includes unmanned threats such as: tactical ballistic missles, cruise missles, unmanned aerial vehicles or rocket artillery and mortars munitions. Technological transformation from manned to the unmanned aircraft and their armaments makes more and more often to be expected with new, previously rarely evaluated air threats. This situation prompted the author of the article to review modern military air constructions and the concept of their use in both warfare and asymmetrical conflicts. This writing presents also methods of enemy air threat evaluation which are used in the decision-making process, focusing on the three essential: normative, capacitive, and objective one.
Źródło:
Zeszyty Naukowe AON; 2014, 2(95); 81-115
0867-2245
Pojawia się w:
Zeszyty Naukowe AON
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wybrane statystyki odporne
Some Robust Statistical Methods
Autorzy:
Trzpiot, Grażyna
Powiązania:
https://bibliotekanauki.pl/articles/586408.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Estymatory
Metody statystyczne
Modele regresji
Statystyka
Estimators
Regression models
Statistical methods
Statistics
Opis:
Outliers are sample values that cause surprise in relation to the majority of the sample. This is not a pejorative term; outliers may be correct, but they should always be checked for transcription errors. Many robust and resistant methods have been developed since 1960 to be less sensitive to outliers. This methods can be used instead or be even better than classical one. Robust methods were used early in me works (Trzpiot 2009, 2011a, 2011b) as an application in finance and economy. This article has a descriptive character, connected with new book for students.
Źródło:
Studia Ekonomiczne; 2013, 152; 163-173
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The comparison of model-based clustering with heuristic clustering methods
Autorzy:
Witek, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/657968.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
heurisic methods of clustering
probability models
model-based clustering
Opis:
Najczęściej w różnych analizach statystycznych wykorzystywane są klasyczne metody analizy skupień, opierające się na podejściu heurystycznym. W referacie zaprezentowane zostanie podejście modelowe w analizie skupień (model-based clustering), bazujące na modelach probabilistycznych. W części empirycznej referatu podejście to zostanie porównane z klasycznymi metodami taksonomicznymi (metodami hierarchicznymi oraz metodami iteracyjno- aglomeracyjnymi).
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2011, 255
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods of evaluating and motivating an IT project team
Autorzy:
Krysiak, Monika
Powiązania:
https://bibliotekanauki.pl/articles/1179359.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
IT department
methods of evaluation
motivation
project manager
project team
Opis:
The paper describes what a project team is, what are its components, and what skills are required from a project team manager. In addition, most commonly used techniques of team evaluation are described, along with methods used in motivating team members and whole teams. The aim of the paper was to confront literary sources with the real experience of IT project team members. A survey of 100 respondents was conducted. All respondents have worked in an IT department during the last five years. The group of respondents was diverse in terms of age and gender. The questions pertained to methods of evaluating and motivating team members in IT departments.
Źródło:
World Scientific News; 2017, 78; 140-156
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The creation process for methods of financial situation of enterprises
Autorzy:
Miciuła, Ireneusz
Powiązania:
https://bibliotekanauki.pl/articles/1189914.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Financial monitoring
methods
evaluation of the financial situation
enterprises
Opis:
Monitoring of a financial situation of enterprises is highly significant, what was proved by the latest world financial crisis. Such a monitoring will allow early identification of a threat, and thus undertaking preventive actions, which will protect from loses that may lead to a bankruptcy. Therefore, it is so significant to employed the verified analytical tools. The aim of the article is to present the methods of monitoring the financial situation of the company and directions for further research in this area. As part of the presents the essence of indicator analysis, with the release of its application to the quintessential area, namely financial liquidity. In the later part of the study are shown the directions of the development of new methods for monitoring the financial situation of the business entities that require further research.
Źródło:
World Scientific News; 2016, 48; 276-285
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Godunov-type numerical methods for one- and two-component magnetohydrodynamic equations
Autorzy:
Murawski, K.
Powiązania:
https://bibliotekanauki.pl/articles/1943228.pdf
Data publikacji:
2009
Wydawca:
Politechnika Gdańska
Tematy:
numerical simulations of hyperbolic equations
Godunov methods
magnetohydrodynamics
Opis:
In this paper we review Godunov-type numerical methods for one- and two-component magnetohydrodynamic equations. Solving these equations numerically is a formidable task as a result of the internal complexity of these equations and the requirements of [delta] B=0. We present several results of advanced numerical simulations for complex systems. These results prove that the numerical codes which are based on Godunov-type methods, cope with all problems very well.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2009, 13, 1-2; 45-73
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of environmetric methods to investigate control factors on water quality
Autorzy:
Boyacioglu, H.
Powiązania:
https://bibliotekanauki.pl/articles/205171.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
water quality
factor analysis
environmetric methods
discriminant analysis
Opis:
In the study, environmetric methods were successfully performed a) to explore natural and anthropogenic controls on reservoir water quality, b) to investigate spatial and temporal differences in quality, and c) to determine quality variables discriminating three reservoirs in Izmir, Turkey. Results showed that overall water quality was mainly governed by “natural factors” in the whole region. A parameter that was the most important in contributing to water quality variation for one reservoir was not important for another. Between summer and winter periods, difference in arsenic concentrations were statistically significant in the Tahtalı, Ürkmez and iron concentrations were in the Balçova reservoirs. Observation of high/low levels in two seasons was explained by different processes as for instance, dilution from runoff at times of high flow seeped through soil and entered the river along with the rainwater run-off and adsorption. Three variables “boron, arsenic and sulphate” discriminated quality among Balçova & Tahtalı, Balçova & Ürkmez and two variables “zinc and arsenic” among the Tahtalı & Ürkmez reservoirs. The results illustrated the usefulness of multivariate statistical techniques to fingerprint pollution sources and investigate temporal/spatial variations in water quality.
Źródło:
Archives of Environmental Protection; 2017, 43, 3; 17-23
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Review: J. Stoer; Introdution to numeric methods, vol. I; J. Stoer, R. Bulirsch; Introdution to numeric methods, vol. II
Autorzy:
Regińska, Teresa
Powiązania:
https://bibliotekanauki.pl/articles/747447.pdf
Data publikacji:
1983
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
.
Opis:
Artykuł nie zawiera streszczenia
The article contains no abstract
Źródło:
Mathematica Applicanda; 1983, 11, 22
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Review of methods for data sets with missing values and practical applications
Autorzy:
Korczyński, Adam
Powiązania:
https://bibliotekanauki.pl/articles/433946.pdf
Data publikacji:
2014
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
missing data pattern
missing data mechanism
complete-case analysis
available-case analysis
single imputation
likelihood-based methods
multiple imputation
weighting methods
Opis:
The aim of this paper is to revise the traditional methods (complete-case analysis, available-case analysis, single imputation) and current methods (likelihood-based methods, multiple imputation, weighting methods) for handling the problem of missing data and to assess their usefulness in statistical research. The paper provides the terminology and the description of traditional and current methods and algorithms used in the analysis of incomplete data sets. The methods are assessed in terms of the statistical properties of their estimators. An example is provided for the multiple imputation method. The review indicates that current methods outweigh traditional ones in terms of bias reduction, precision and efficiency of the estimation.
Źródło:
Śląski Przegląd Statystyczny; 2014, 12(18); 83-104
1644-6739
Pojawia się w:
Śląski Przegląd Statystyczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimisation of high-speed steels chemical composition using the artificial intelligence methods
Autorzy:
Sitek, W.
Powiązania:
https://bibliotekanauki.pl/articles/99657.pdf
Data publikacji:
2011
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
tool steel
materials design
artificial intelligence methods
Opis:
The main goal of the research carried out was developing the design methodology for the new high-speed steels with the required properties, including hardness and fracture toughness, as the main properties guaranteeing the high durability and quality of tools made from them. It was decided that hardness and fracture toughness KIc are the criteria used during the high-speed steels design. In case of hardness, the statistical and neural netw chemical composition and its heat treatment parameters, i.e., austenitizing- and tempering temperatures. In the second case - high-speed steels fracture toughness, the neural network model was developed, makin it possible to compute the KIc factor based on the steel chemical composition and its heat treatment parameters. The developed material models were used for designing the chemical compositions if the new high-speed steel, demonstrating the desired properties, i.e., hardness and fracture toughness. Methodology was developed to this end, employing the evolutionary algorithms, multicriteria optimisation of the high-speed steels chemical composition.
Źródło:
Journal of Machine Engineering; 2011, 11, No. 1-2; 120-133
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stan aktualny i przyszłość metod geoinżynieryjnych
Present state and perspectives of geoengineering methods
Autorzy:
Stryczek, S.
Powiązania:
https://bibliotekanauki.pl/articles/299437.pdf
Data publikacji:
2005
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
geoinżynieria
metody geoinżynieryjne
geoengineering
geoengineering methods
Opis:
W artykule przedstawiono propozycję podziału metod geoinżynieryjnych z uwzględnieniem szeroko rozumianej geotechniki, geomechaniki i geologii inżynierskiej. Geoinżynieria zaczyna rozwijać się w nowych, dawniej nieznanych obszarach, takich jak: budownictwo lądowe, inżynieria środowiska, budownictwo górnicze, technologie bezwykopowe, budownictwo hydrotechniczne, powierzchniowe konstrukcje ziemne. Można zaryzykować stwierdzenie, że w najbliższych dziesięcioleciach rola geoinżynierii będzie wzrastać. Z tego powodu trzeba nie tylko rozwijać badania w tam zakresie, ale także kształcić odpowiednio przygotowanych geoinżynierów, którzy sprostają tym wyzwaniom. Należy mieć świadomość, że niewłaściwe przygotowanie kadry, źle wykonane projekty oraz budowle podziemne i nadziemne mogą prowadzić do katastrof o trudnych do przewidzenia skutkach.
A division of geoengineering methods has been proposed, accounting for geotechnics, geomechanics and engineering geology, in their broadest sense. Geoengineering started to develop in new, unknown domains, i.e.: civil engineering, environmental engineering, mining construction, trenchless construction, hydrotechnical construction, surface earthworks. One may risk a conclusion that geoengineering is going to grow in power in the coming decades. Therefore, it is vital to develop researches in this respect and also educate future geoengineers who could undertake this challenge. It should be born in mind that unprofessional staff, erroneous projects and badly done surface and underground works may result in grand catastrophes of unpredictable scale.
Źródło:
Wiertnictwo, Nafta, Gaz; 2005, 22, 1; 303-310
1507-0042
Pojawia się w:
Wiertnictwo, Nafta, Gaz
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computing Generalized Inverse Systems Using Matrix Pencil Methods
Autorzy:
Varga, A.
Powiązania:
https://bibliotekanauki.pl/articles/908054.pdf
Data publikacji:
2001
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
macierz
metody numeryczne
system inversion
rational matrices
descriptor systems
numerical methods
Opis:
We address the numerically reliable computation of generalized inverses of rational matrices in descriptor state-space representation. We put particular emphasis on two classes of inverses: the weak generalized inverse and the Moore-Penrose pseudoinverse. By combining the underlying computational techniques, other types of inverses of rational matrices can be computed as well. The main computational ingredient to determine generalized inverses is the orthogonal reduction of the system matrix pencil to appropriate Kronecker-like forms.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2001, 11, 5; 1055-1068
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some methods of proving measurability
Autorzy:
Ursell, H.
Powiązania:
https://bibliotekanauki.pl/articles/1383800.pdf
Data publikacji:
1939
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Źródło:
Fundamenta Mathematicae; 1939, 32, 1; 311-330
0016-2736
Pojawia się w:
Fundamenta Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Homogenization Methods in Prediction of Strength Properties for WPC Composites
Autorzy:
Frącz, W.
Janowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/118023.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
WPC composites
homogenization methods
Digimat software
Opis:
In order to reduce costs of experimental research, new methods of forecasting material properties are being developed. The current intensive increase in computing power motivates to develop the computer simulations for material properties prediction. This is due to the possibility of using analytical and numerical methods of homogenization. In this work calculations for predicting the properties of WPC composites using analytical homogenization methods, i.e. Mori-Tanaka (first and second order) models, Nemat-Nasser and Hori models and numerical homogenization methods were performed.
Źródło:
Applied Computer Science; 2017, 13, 3; 77-89
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metody oceny homogenności mieszanek paszowych
Methods evaluating the homogenity of feed mixtures
Autorzy:
Walczyński, S.
Powiązania:
https://bibliotekanauki.pl/articles/291319.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
mieszanka paszowa
homogenność
feed mixture
homogeneity
testing methods
Opis:
W pracy przedstawiono dwie metody oceny jednorodności mieszanek paszowych, które można wykorzystywać dla doraźnej kontroli procesu technologicznego oraz w nadzorze paszowym. Cechują się niskimi kosztami i łatwością wykonania. Obliczane parametry jakościowe, uzyskane za pomocą metody wskaźnikowej, sugerowały niższy poziom homogenności mieszanki w porównaniu z metodą węglanową. W praktyce paszowej, ocenę jakości mieszanek paszowych, pod względem jednorodności, należy przeprowadzać, co najmniej dwiema metodami.
Paper presented two methods of evaluating the homogeneity of feed mixtures which may be applied to immediate control of technological process and feed supervision. The methods are characterized by low costs and simple procedure. Calculated quality parameters, available by means of indicatory method, suggested lower level of the mixture homogeneity in comparison to carbonate method. In feed manufacturing practice the quality of feed mixtures in respect of their homogeneity should be evaluated at least by two methods.
Źródło:
Inżynieria Rolnicza; 2005, R. 9, nr 11, 11; 481-488
1429-7264
Pojawia się w:
Inżynieria Rolnicza
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Technical efficiency and the methods of its measurement
Efektywność techniczna i metody jej pomiaru
Autorzy:
Kulik, Justyna
Powiązania:
https://bibliotekanauki.pl/articles/425209.pdf
Data publikacji:
2017
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
efficiency
technical efficiency
measurement
methods
DEA
Opis:
The main purpose of this publication was to try systemizing the efficiency per-formance with particular regard to technical efficiency and measurement methods, and to identify the problems in defining and measuring the existing problems. The paper presents definitions of efficiency by selected authors, the classification and characterization of vari-ous types of efficiency made with particular emphasis on technical efficiency, and the basic methods for testing the effectiveness of the division on the indicator parametric and para-metric detailing the different measurement methods. A detailed analysis of the non-parametric methods for testing the effectiveness of technical support is the DEA (Data En-velopment Analysis) method presented with the example of the procedure for calculation of relative efficiency. The study identifies various modifications of the DEA method and also signalled areas where this method can be used to measure the effectiveness of specific enti-ties. The main research method used in the present study was to review and analyze the lit-erature on the subject topic.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2017, 3 (57); 72-87
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A conjugate gradient method with quasi-Newton approximation
Autorzy:
Koko, Jonas
Powiązania:
https://bibliotekanauki.pl/articles/1208176.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Newton and quasi-Newton methods
unconstrained high-dimensional optimization
conjugate gradient methods
Opis:
The conjugate gradient method of Liu and Storey is an efficient minimization algorithm which uses second derivatives information, without saving matrices, by finite difference approximation. It is shown that the finite difference scheme can be removed by using a quasi-Newton approximation for computing a search direction, without loss of convergence. A conjugate gradient method based on BFGS approximation is proposed and compared with existing methods of the same class.
Źródło:
Applicationes Mathematicae; 2000, 27, 2; 153-165
1233-7234
Pojawia się w:
Applicationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pomiary refraktometryczne w GUM
Autorzy:
Warzywoda, B.
Powiązania:
https://bibliotekanauki.pl/articles/1426137.pdf
Data publikacji:
2013
Wydawca:
Główny Urząd Miar
Tematy:
metody analityczne
metody pomiarowe
metoda goniometryczna
metoda refraktometryczna
analytical methods
measurement methods
goniometric method
refractometric method
Opis:
W artykule przedstawiono metody pomiaru współczynnika załamania, goniometryczną i refraktometryczną. Metoda goniometryczna jest bezwzględną metodą pomiaru i pozwala na uzyskanie najwyższych dokładności. Metoda refraktometryczna najczęściej oparta jest na zjawisku całkowitego wewnętrznego odbicia i wykorzystywana w przyrządach zwanych refraktometrami.
Źródło:
Metrologia i Probiernictwo : biuletyn Głównego Urzędu Miar; 2013, 3; 29-34
2300-8806
Pojawia się w:
Metrologia i Probiernictwo : biuletyn Głównego Urzędu Miar
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Regular matrix methods of summability and real interpolation
Autorzy:
Kryczka, Andrzej
Kurlej, Konrad
Powiązania:
https://bibliotekanauki.pl/articles/2078962.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
Real interpolation spaces
regular methods of summability
Banach–Saks property
Opis:
We show that the Banach–Saks property with respect to a regular positive matrix method of summability is inherited by the real interpolation spaces from a space forming the interpolation family and possessing this property. The proof refers to the Galvin–Prikry theorem on Ramsey sets. The results apply to several matrix methods of summability, such as Cesaro, Nørlund or Holder methods.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica; 2021, 75, 1; 53-59
0365-1029
2083-7402
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kierunki rozwoju metod geoinżynieryjnych
Directions of development of geoengineering methods
Autorzy:
Stryczek, S.
Gonet, A.
Wiśniowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/299439.pdf
Data publikacji:
2005
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
geoinżynieria
metody geoinżynieryjne
geoengineering
geoengineering methods
Opis:
Rozwój gospodarczy, jaki przeżywa świat od początku XX wieku, związany jest z ciągłym wzrostem zapotrzebowania na informację, środki energetyczne i stymuluje zwiększone wymagania w dziedzinie komunalnej. Potrzeby te determinują między innymi konieczność rozwoju i modernizacji metod geoinżynieryjnych. Postęp techniczny pozwolił na opracowanie zupełnie nowych technologii stanowiących alternatywę dla dotychczasowych tradycyjnych metod. Deficyt terenów przydatnych pod względem geomechanicznym dla realizacji obiektów budowlano-inżynieryjnych, przy równocześnie wysokich kosztach wykonywania głębokich fundamentów, stały się bodźcem do poszukiwania tańszych i skuteczniejszych metod wzmacniania i uszczelniania gruntów i skał. W pracy przedstawiono kierunki rozwoju oraz zakres stosowania metod geoinżynieryjnych w różnej działalności inżynierskiej.
Since the beginning of the 20th century the economic development has been related with the constantly increasing need for information and power sources, stimulating at the same time higher demands in the communal sector. These needs determine the necessity to develop and modernize geoengineering methods as well. Technical advancement enabled elaboration of new technologies, being an alternative for the traditional methods used so far. Deficiency of areas that would be geomechanically suitable for the construction of new building and engineering objects and the high costs of deep foundations spurred the idea of searching new, cheaper and more efficient methods of reinforcing and sealing ground and rock mass. The directions and scope of applied geoengineering methods are presented in view of various engineering activities to be undertaken.
Źródło:
Wiertnictwo, Nafta, Gaz; 2005, 22, 1; 311-323
1507-0042
Pojawia się w:
Wiertnictwo, Nafta, Gaz
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
W stronę psychologii personalistycznej
Towards Personalistic Psychology
Autorzy:
Koczanowicz-Dehnel, Iwona
Powiązania:
https://bibliotekanauki.pl/articles/2141302.pdf
Data publikacji:
2014-12-31
Wydawca:
Wydawnictwo Naukowe Dolnośląskiej Szkoły Wyższej
Tematy:
impersonalizm
personalizm
metody ilościowe
metody jakościowe
impersonalism
personalism
quantitative methods
qualitative methods
Opis:
Artykuł jest próbą przedstawienia toczącego się we współczesnej psychologii sporu metodologicznego dotyczącego stosowania metod badawczych. Kontrowersje związane są z opozycją między metodami ilościowymi a metodami jakościowymi. Obszar dyskusji metodologicznej zawiera również pytanie o przedmiot badań w psychologii, w którym odnajdujemy de facto pytanie o koncepcje człowieka. Szczególną rolę w tej dyskusji odgrywa psychologia personalistyczna zorientowana na badanie niepodzielnej całości zawierającej podstawową zasadę unitas multiplex tworzącą osobę. W tak zdefiniowanym przedmiocie psychologii metodologia oparta na parametrach statystycznych (metody ilościowe) nie umożliwia poznania wielowarstwowej rzeczywistości psychicznej osoby, gdyż w tym przypadku zakwestionowana zostaje teza o symetrii wyjaśniania i przewidywania stanowiąca podstawę neopozytywistycznego wzorca nauki.
The article depicts an ongoing methodological discussion in contemporary psychology concerning the application of research methods. These controversies are linked to the opposition between qualitative methods and quantitative methods. These methodological discussions include also the question of the research subject of psychology in which we find the issue of the concept of man. What plays a special role in these discussions is personalistic psychology aimed at the investigation of an indivisible entity which contains the basic principle of unitas multiplex constituting the person. If we define in this way the subject of psychology then the method based on statistical parameters cannot help to get to know the multilayer psychic reality of the person, because in this case the thesis of the symmetrical relations between explanation and prediction is put into question.
Źródło:
Teraźniejszość – Człowiek – Edukacja; 2014, 17, 4(68); 7-17
1505-8808
2450-3428
Pojawia się w:
Teraźniejszość – Człowiek – Edukacja
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sampling methods for investment portfolio formulation procedure at increased market volatility
Autorzy:
Dzicher, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/2027253.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Investment decisions
Optimization techniques
Portfolio selection
Statistical simulation methods
Opis:
Aim/purpose–In this paper, a market volatility-robust portfolio composition frame-work under the modified Markowitz’s approach with the use of sampling methods is developed in order to improve the allocation efficiency for a portfolio of financial instruments formulation procedure at an increased market volatility.Design/methodology/approach–In order to overcome the risk of not receiving an optimal solution to the portfolio optimization (suboptimal outcomes of attribution of weights in allocation procedures) the developed model, first, implements the rationale that financial markets largely feature two states, i.e., quiescent (non-crisis; low market volatility) periods that are occasionally interspersed with stress (crisis; high market volatility) periods and, second, relies on many input samples of rates of return, either from an empirical distribution or a theoretical distribution (mitigating estimation risk). All computational results are reported for publicly available historical daily data sets on selected Polish blue-chip securities. Findings–Not only did the presented method produce more diversified allocation, but also successfully minimized the unfavorable effects of increased market volatility by providing less risky portfolios in comparison to Newton’s method, typically used for optimization under portfolio theory. Research implications/limitations–The research emphasized that in order to get a more diversified investment portfolio it is crucial to outdo the limitations of a single sample approach (utilized in Markowitz’s model) which may on some occasions be statistically biased. Thus it was proved that sampling methods allow to obtain a less concentrated and volatile allocation which contributes the investment decision-making. However, the current research focused solely on publicly available input data of particular securities. In this manner, an additional analysis can be prepared for other jurisdictions and asset classes. There can also be considered a use of other than variance risk measures.Originality/value/contribution–The suggested framework contributes to existing methods a wide array of quantitative data analysis and simulation tools for composing an unique approach that directly addresses the task of minimizing the adverse implications of increased market volatility that, in consequence, pertains to knowledgeable attributing of investment portfolio proportions of either individual or institutional investors. The prepared method is also proved to hold demanded computational quality and, importantly, the capacity for further development.
Źródło:
Journal of Economics and Management; 2021, 43; 70-89
1732-1948
Pojawia się w:
Journal of Economics and Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Review of the book 'Statistics for imaging, optics, and photonics' by Peter Bajorski
Autorzy:
Szajowski, Krzysztof J.
Powiązania:
https://bibliotekanauki.pl/articles/748440.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Optics – Statistical methods
Image processing – Statistical methods, Photonics – Statistical methods.
Metody statystyczne w optyce
metody statystyczne przetwarzania obrazów
metody statystyczne fotoniki
Opis:
Niniejsza książka [1] 1 ma na celu zwięzłe przedstawienie metod statystycznych przydatnych w przetwarzaniu rzeczywistych danych pochodzących z różnych źródeł. Format i charakter danych, do których zebrane z różnych źródeł modele i algorytmy wnioskowania zostały zebrane, jest skutkiem rozwoju metod diagnostycznych i pomiarowych rozwijanych w medycynie, technice, astronomii, ogólnie rozumianych metodach śledzenia zmian w chronionych obszarach otaczającej człowieka i chronione obiekty przestrzeni. Wszystkie techniki zaprezentowane w książce są poparte rzeczywistymi zbiorami danych z teledetekcji, analizy barw, druku i innych pokrewnych zagadnień. W celu wzmocnienia intuicji i lepszego zrozumienia geometrycznych aspektów poruszanych zagadnień w książce zamieszczono 198 zdjęć, obrazów, rycin i wykresów. Każdy z dziesięciu rozdziałów zawiera wprowadzenie w omawianą metodologię przed jej zastosowaniem do złożonych struktur danych. Książka adresowana jest głównie do studentów i doktorantów kierunków interdyscyplinarnych. Znajdą w niej również ważne informacje matematycy rozwiązujący zagadnienia praktyczne oraz tematy do dalszych badań statystycy prowadzący badania podstawowe w tej dyscyplinie. Trzy rozdziały dodatkowe pomyślane są jako wprowadzenie do specjalistycznego języka stosowanego przez statystyków oraz przetwarzania danych dla celów wnioskowania statystycznego.
The book under review presents necessary analytical techniques in thecontext of real examples from various areas within the field, including remote sensing,color science, printing, and astronomy. Except the textbook the author provided aweb-page related material containing the data sets and various other material whichmakes the book more useful as the course monograph.
Źródło:
Mathematica Applicanda; 2015, 43, 2
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Teacher, democratic values and methods
Autorzy:
Gluchmanová, Marta
Powiązania:
https://bibliotekanauki.pl/articles/2141763.pdf
Data publikacji:
2009
Wydawca:
Instytut Studiów Międzynarodowych i Edukacji Humanum
Źródło:
Humanum. Międzynarodowe Studia Społeczno-Humanistyczne; 2009, 3(3); 335-342
1898-8431
Pojawia się w:
Humanum. Międzynarodowe Studia Społeczno-Humanistyczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Method vs. form - an attempt to classify cartographic presentation methods
Autorzy:
Mazur, M.
Powiązania:
https://bibliotekanauki.pl/articles/92398.pdf
Data publikacji:
2017
Wydawca:
Oddział Kartograficzny Polskiego Towarzystwa Geograficznego
Tematy:
cartographic methodology
presentation method
presentation form
classification
cartographic presentation methods
Opis:
The author of the article discusses the subject of terminology in the field of cartographic methodology. The general purpose is to propose an internally consistent system of concepts which allows classification of cartographic presentation methods based on unambiguous criteria. For this purpose, in the article the concept of presentation method and the concept of presentation form were differentiated, the cartographic presentation method was divided into stages, and possible data transformation and visualization aspects during application of a method were specified. Then, review of the previous classifications of cartographic presentation methods was conducted which allows differentiation of two fundamental approaches to classification and comparison of the applied criteria. On this basis, the author’s classification of cartographic presentation methods was suggested in which three qualitative and four quantitative methods were differentiated. It constitutes a compromise between accepting unambiguous criteria and the possibility to differentiate methods fixed in cartographic convention.
Źródło:
Polish Cartographical Review; 2017, 49, 2; 47-57
2450-6974
Pojawia się w:
Polish Cartographical Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Procurements of modern methods of construction based on wood
Autorzy:
Švajlenka, J.
Kozlovská, M.
Powiązania:
https://bibliotekanauki.pl/articles/104246.pdf
Data publikacji:
2018
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
modern methods of construction
wood
construction costs
construction time
Opis:
In the last years we have witnessed increasingly frequent interest in an individual way of living in family houses. This provides a more natural way of living and living freely in contrast to the impersonal and restrictive living in panel housing estates. On this change largely responded companies offering a variety of system construction and technological solutions. With traditional and proven construction materials, the company also new, modern and fully-fledged alternative housing. One of them is the modern prefabricated structural systems based on wood. Even despite undeniable advantages that are associated with wooden buildings, preventing their more widespread low level of knowledge and awareness on the part of consumers and investors, as well as strong ties to traditional brick technology. An important factor in deciding the most building owners in choosing the construction of wooden houses is a measure of coping and recovery advantages of individual design systems that will mainly be reflected in the costs, quality and speed of construction. For this reason, we have decided to carry out a survey aimed at examining the impact of the procurement method on existing wood buildings in the context of construction time and acquisition costs.
Źródło:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury; 2018, 65, 4; 31-38
2300-5130
2300-8903
Pojawia się w:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ensembles of instance selection methods: A comparative study
Autorzy:
Blachnik, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/330413.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
machine learning
instance selection
ensemble methods
uczenie maszynowe
selekcja przypadków
metoda zespołowa
Opis:
Instance selection is often performed as one of the preprocessing methods which, along with feature selection, allows a significant reduction in computational complexity and an increase in prediction accuracy. So far, only few authors have considered ensembles of instance selection methods, while the ensembles of final predictive models attract many researchers. To bridge that gap, in this paper we compare four ensembles adapted to instance selection: Bagging, Feature Bagging, AdaBoost and Additive Noise. The last one is introduced for the first time in this paper. The study is based on empirical comparison performed on 43 datasets and 9 base instance selection methods. The experiments are divided into three scenarios. In the first one, evaluated on a single dataset, we demonstrate the influence of the ensembles on the compression–accuracy relation, in the second scenario the goal is to achieve the highest prediction accuracy, and in the third one both accuracy and the level of dataset compression constitute a multi-objective criterion. The obtained results indicate that ensembles of instance selection improve the base instance selection algorithms except for unstable methods such as CNN and IB3, which is achieved at the expense of compression. In the comparison, Bagging and AdaBoost lead in most of the scenarios. In the experiments we evaluate three classifiers: 1NN, kNN and SVM. We also note a deterioration in prediction accuracy for robust classifiers (kNN and SVM) trained on data filtered by any instance selection methods (including the ensembles) when compared with the results obtained when the entire training set was used to train these classifiers.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2019, 29, 1; 151-168
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Machine Learning Methods in E-mail Spam Classification
Autorzy:
Świtalski, Piotr
Kopówka, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/1819261.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:
spam detecting
machine learning
classification methods
spam filters
malicious messages
Opis:
Increasing number of unwanted e-mails has influence on users’ security in the Internet. Today spam e-mails can store potential malicious messages which e.g. can redirect user to fake sites. These messages recently appeared in social media. Filtering of this content is important due to minimize financial and branding costs. Traditional methods of spam filtering cannot be sufficient for present threats. We required new methods for constructing more dependable and robust antispam filters. Machine learning recently becomes very popular technique in classification methods. It has been successfully used in spam classification. In this paper we present some methods of machine learning for spam detecting. We would also like to introduce ways to solve the spam classification problem. We show that these methods can be useful in classification of malicious messages. We also compared developed methods and presented results in the experimental section.
Źródło:
Studia Informatica : systems and information technology; 2019, 1-2(23); 57--76
1731-2264
Pojawia się w:
Studia Informatica : systems and information technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Formal Methods and Science in Philosophy: Introduction to the Special Issue
Autorzy:
Blackburn, Patrick
Kovač, Srećko
Świętorzecka, Kordula
Powiązania:
https://bibliotekanauki.pl/articles/750028.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
methods and science in philosophy
Opis:
Introduction to the Special Issue.
Źródło:
Bulletin of the Section of Logic; 2020, 49, 2
0138-0680
2449-836X
Pojawia się w:
Bulletin of the Section of Logic
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using interactive teaching methods in economic education: a problematic aspect
Autorzy:
ZURAVSKA, Nina
YAKOVENKO, Olena
Powiązania:
https://bibliotekanauki.pl/articles/456352.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Rzeszowski
Tematy:
economic education
interactive methods of teaching
professional competence
Opis:
The article emphasizes the modern demands of training of competent specialists. It is proposed to solve this problem by using interactive teaching methods, such as the most appropriate for the ultimate aim of education. Classification of such methods is done. It’s emphasized on the problems of their application, analyzed of the main aspects of their poor using in economic education. Suggestions for better implementation of interactive teaching methods in vocational education are done.
Źródło:
Edukacja-Technika-Informatyka; 2013, 4, 2; 128-132
2080-9069
Pojawia się w:
Edukacja-Technika-Informatyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microscopic methods for analysis of mortars from historical masonry structures
Autorzy:
Owsiak, Zdzisława
Powiązania:
https://bibliotekanauki.pl/articles/2090727.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
historical buildings
mortar
microscopic methods
budynki historyczne
metody mikroskopowe
zaprawa
Opis:
The process of historical building conservation includes the repair of mortars eroded due to material and environmental factors. Identification of old mortar constituents is necessary to enable duplicating the material. Information on the binder and aggregate types and contents can be obtained from microscopic observation used in combination with instrumental methods. This paper presents the results of microstructure and mineral composition tests of mortars collected from the walls of thirteenth century buildings. A combination of techniques was used, which included X-ray diffraction, transmitted light optical microscopy and scanning electron microscopy with micro-area elemental composition analysis. The test results revealed porous lime and sand mortars with a binder-aggregate ratio often beyond the commonly adopted values. The mortars contained sand grains of up to 0.5 mm and larger pieces of limestone, flint, feldspar and brick. Transmitted light optical microscopy and scanning microscopy were found to be essential techniques for mortar characterization in existing buildings and structures.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 1; e136042, 1--8
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł

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