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Wyświetlanie 1-15 z 271
Tytuł:
Multivariate Analysis in Gas Sensing Applications
Autorzy:
Szpakowski, A.
Tyszkiewicz, C.
Pustelny, T.
Powiązania:
https://bibliotekanauki.pl/articles/1811555.pdf
Data publikacji:
2008-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
02.50.Sk
07.07.Df
Opis:
In gas sensing applications we often use sensors which have poor selectivity. Such sensors are mature, cheap devices with simple application circuits. Unfortunately, their cross sensitivity greatly restricts their usefulness when used in systems which employs univariate analysis. One method which allows to overcome this difficulty is utilization of multivariate analysis methods applied to the response from the group of such non-selective sensors. This work presents the multivariate, pattern recognition system utilized to process the response of an array of non-selective semiconductor sensors to obtain the qualitative information.
Źródło:
Acta Physica Polonica A; 2008, 114, 6A; A-239-A-242
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simultaneous test procedures in multivariate analysis of variance
Autorzy:
Caliński, Tadeusz
Dyczkowski, Andrzej
Sitek, Mirosława
Powiązania:
https://bibliotekanauki.pl/articles/748461.pdf
Data publikacji:
1979
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Analysis of variance and covariance
Opis:
Rozważane jest zagadnienie testowania wielu hipotez w analizie doświadczenia, w którym każda jednostka doświadczalna obserwowana jest ze względu na p wyróżnionych zmiennych. Zmienne te mogą przedstawiać różne cechy lub tę samą cechę obserwowaną róznych warunkach pomiarowych; mogą także przedstawiać różne cechy i różne warunki pomiarowe.
The article contains no abstract
Źródło:
Mathematica Applicanda; 1979, 7, 14
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multivariate analysis in 3x3 type table
Autorzy:
Mantaj, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/658370.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
statistics
four-fold tables
multi-feature observations
Opis:
Praca zawiera propozycję metod analizy cech jednostek przestrzennych w tabelach wielo- dzielczych, przedstawioną na przykładzie tabeli dwudzielczej typu 3×3. Do prezentacji zastoso- wanych metod wykorzystano dane dotyczące 143 gmin wiejskich i miejsko-wiejskich woj. pod- karpackiego według stanu na 31.12.2007 r. Przedstawiona w pracy analiza, poza oceną kształtowania się charakterystyk w wydzielonych ze względu na przyjęte cechy kryterialne podklasach, objęła również przykłady zastosowania me- tod jednoczesnego opisu zmienności i współzależności badanych charakterystyk oraz ustalanie wpływowych jednostek przestrzennych, wykorzystując w tym celu uogólnione odchylenie stan- dardowe, średnie z bezwzględnych wartości różnic między współczynnikami korelacji, wyznacz- niki macierzy korelacji, statystykę Kaisera-Meyera-Olkina, wartości własne macierzy korelacji, a także macierze rzutowania i wartości dźwigniowe.
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:
Multivariate analysis of covariance and some applications of it
Autorzy:
Kaczmarek, Z.
Powiązania:
https://bibliotekanauki.pl/articles/747828.pdf
Data publikacji:
1975
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
62J10
Opis:
In many physical problems we make use of experimental data in which each measured unit is characterized by a definite system of properties. A large number of such properties are necessary to interpret the results of an experiment. However, complete information can be used only if all properties observed during the experiment are considered simultaneously. For this reason the application of multivariate analysis of variance or covariance is justified when processing data with many properties. In this work we discuss the theory and practical applications of univariate and multivariate analysis of covariance. This work is a continuation of a paper by B. Ceranka and the author [Mat. Stos. (3) 4 (1975), 65–75; MR0451560], and generalizes multivariate analysis of covariance for block designs to an arbitrary experimental arrangement. A general linear model of multivariate analysis of covariance, a special case of which yields analysis of variance and regression analysis, is given in Chapter 1. Chapter 2 is devoted to analysis of covariance in one and many variables and to the testing of hypotheses concerning the main and auxiliary variables. In this chapter we introduce estimators for the matrices of regression coefficients of the main variables relative to the auxiliary variables and for the matrix of parameters. Formulas are given for the sums of squares and for the matrices of the sums of squares which are needed in hypothesis testing in the analysis of covariance. Practical applications of multivariate analysis of covariance are illustrated with an example of the growth of plants. (MR0483212)
Źródło:
Mathematica Applicanda; 1975, 3, 5
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Advances on Permutation Multivariate Analysis of Variance for big data
Autorzy:
Bonnini, Stefano
Assegie, Getnet Melak
Powiązania:
https://bibliotekanauki.pl/articles/2107160.pdf
Data publikacji:
2022-06-14
Wydawca:
Główny Urząd Statystyczny
Tematy:
big data
MANOVA
permutation test
multivariate analysis
Opis:
In many applications of the multivariate analyses of variance, the classic parametric solutions for testing hypotheses of equality in population means or multisample and multivariate location problems might not be suitable for various reasons. Multivariate multisample location problems lack a comparative study of the power behaviour of the most important combined permutation tests as the number of variables diverges. In particular, it is useful to know under which conditions each of the different tests is preferable in terms of power, how the power of each test increases when the number of variables under the alternative hypothesis diverges, and the power behaviour of each test as the function of the proportion of true alternative hypotheses. The purpose of this paper is to fill the gap in the literature about combined permutation tests, in particular for big data with a large number of variables. A Monte Carlo simulation study was carried out to investigate the power behaviour of the tests, and the application to a real case study was performed to show the utility of the method.
Źródło:
Statistics in Transition new series; 2022, 23, 2; 163-183
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of size and shape features of hazelnuts using multivariate analysis
Autorzy:
Milošević, T.
Milošević, N.
Powiązania:
https://bibliotekanauki.pl/articles/11543547.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Opis:
Nut and kernel size, shape and some sensorial traits in ten hazelnut (Corylus avellana L.) cultivars were evaluated using an objective procedure based on multivariate analysis in order to obtain an important value of these cultivars for growers, processing and consumers. Cultivars were compared with nuts and kernels of C. avellana L. and C. colurna L. Significant differences in all physical properties were found among the cultivars, and also among cultivars and hazelnut species. A high correlation was found among some hazelnut traits. Cluster and principal component analysis supported results obtained by analysis of variance, and segregated genotypes in similar groups according to their characteristics evaluated. Procedure described may be useful in analyzing impacts of genotype per se on nut and kernel physical and sensorial properties, and also determine the factors for growers, breeders, especially for harvesting, sorting and other postharvest operations in order to establish optimal machine and equipment design.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2017, 16, 5; 49-61
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
MULTIVARIATE ANALYSIS OF HEALTHCARE SYSTEMS IN SELECTED EUROPEAN UNION COUNTRIES. CLUSTER ANALYSIS
Autorzy:
Miszczyńska, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/453371.pdf
Data publikacji:
2013
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
multivariate statistical analysis
cluster analysis
EU healthcare systems
Opis:
The European Union as a whole tends to be a highly diversified entity. Therefore it should not be surprising that the main goal of EU authorities is the limitation of inequalities among member countries. The aim of this study is to identify some groups of countries from the EU that show similar characteristics concerning the functioning of healthcare sectors. The selected countries will be analysed through the prism of characteristics connected with the financial and organizational issues. The study will be backed up by a chosen multivariate statistical analysis — cluster analysis.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2013, 14, 2; 99-107
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ubezpieczenie komunikacyjne w Polsce – analiza wielowymiarowa
Motor Insurance in Poland – Multivariate Analysis
Autorzy:
Pastusiak, Radosław
Powiązania:
https://bibliotekanauki.pl/articles/907440.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
motor insurance
financial situation
non-life insurance companies
Opis:
Motor insurance in the Polish insurance sector are a major source of revenue. Rapid increase in number of passenger cars registered in Poland since 2000 caused the increase in revenue of Insurance Companies (IC) of this title. The primary objective of this paper is to describe the role of insurance in the Polish insurance sector, in particular, seeking answers to questions about the impact of insurance on the insurance sector. Results obtained analyzes indicate that the motor insurance sector determines the shape of the Polish life insurance. Evidenced by the high gross premiums depending on the number of section II cars, the footnote of motor sector. You can definitely tell that the motor insurance market growing at the same rate as the number of registered cars in Poland, as measured by gross. At the same time changing the cost structure of insurance, since the communication net profitability is not dependent on technical profit on car insurance. But while the profits of Section II is dependent on gross premiums collected from insurance. What can you mean that car insurance is a kind of vehicle for reaching customers with other more effective property insurance. And that motor insurance are key competitive battleground among IC. Loss ratio for motor insurance is not dependent on the number of registered passenger cars. Net efficiency of IC property is not dependent on the efficiency of motor insurance, the measured result of technology.
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2012, 274
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Innovation activities of Polish firms. Multivariate analysis of the moderate innovator countries
Autorzy:
Zygmunt, Aleksandra
Powiązania:
https://bibliotekanauki.pl/articles/18797226.pdf
Data publikacji:
2017
Wydawca:
Instytut Badań Gospodarczych
Tematy:
innovation activities
firm
the European Union
moderate innovator countries
Opis:
Research background: The uncertainty in the environment and rapid changes have impact on firms, regions and countries. The necessity to adapt to new conditions requires a stimulation of actions aimed at enhancing competitiveness and economic growth. In this respect, the European Union strategy called Europe 2020 should be mentioned. Regarding the role of firms? innovation activities in economic growth of regions and countries, substantial im-portance was attached to how innovation activities of Polish firms differ from those from the other EU countries with a level of innovation similar to Poland. Here, a particular emphasis was put on Moderate Innovator countries. Purpose of the article: The aim of this paper is to investigate Polish firms? innovation activities against those by other Moderate Innovator countries. Methodology: In the study a multivariate analysis and zero unitarization methods were applied. These methods allowed for a division of Moderate Innovator countries into four groups and for a multivariate analysis of firms? innovation activities in Poland and other EU countries with a level of innovation similar to Poland. The study was based on data from the European Innovation Scoreboard 2016 relating to dimensions of firm activities: firm in-vestments, linkage & entrepreneurship and intellectual assets. The study referred to the period 2008?2015. Findings & Value added: This paper contributes to the existing literature by providing new insight on understanding the issues related to firms? innovation activities. The analysis has revealed several conclusions. One of them indicated the highest distance of Polish firms to those from the other Moderate Innovator countries, in terms of SMEs innovating in-house, innovative SMEs collaborating with others and public-private co-publications. The findings have practical and policy implications. It is assumed that the obtained results may be useful for firms, regions and countries in adaptation to uncertainty in the environment and, therefore, in maintaining  competitive advantage capacity.
Źródło:
Oeconomia Copernicana; 2017, 8, 4; 505-521
2083-1277
Pojawia się w:
Oeconomia Copernicana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of the Kronecker and products of two mean vectors in multivariate analysis
Autorzy:
Neudecker, Heinz
Trenkler, Götz
Powiązania:
https://bibliotekanauki.pl/articles/729660.pdf
Data publikacji:
2005
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
multivariate normal distribution
Kronecker product
inner product
generalized jackknife
best unbiased estimator
Opis:
In this paper the Kronecker and inner products of mean vectorsof two different populations are considered. Using the generalized jackknife approach, estimators for these products are constructed which turn out to be unbiased, provided one can assume multinormal distribution.
Źródło:
Discussiones Mathematicae Probability and Statistics; 2005, 25, 2; 207-215
1509-9423
Pojawia się w:
Discussiones Mathematicae Probability and Statistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza wielowymiarowa w wykrywaniu oszustw księgowych
Multivariate Analysis in Detection of Accounting Fraud
Autorzy:
Tomanek, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/588766.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Analiza wielowymiarowa
Księgowość
Oszustwa w sprawozdaniach finansowych
Wiarygodność sprawozdania finansowego
Bookkeeping
Fraud in the financial statements
Multi-dimensional analysis
Reliability of financial report
Opis:
The article introduces the reader to the subject of detection of the potential accounting fraud. One can get familiar with basic concepts and directions of the analysis of accounting records to detect potential fraud. After that, a method of identification of multivariate outliers is presented (in the view of classical and robust framework) as an example of a multi-dimensional analysis that could be used in the detection of anomalies. The analysis was performed in the R-project software.
Źródło:
Studia Ekonomiczne; 2014, 192; 155-169
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multivariate analysis of 200-m front crawl swimming performance in young male swimmers
Autorzy:
Nasirzade, A.
Sadeghi, A.
Sobhkhiz, A..
Mohammadian, K.
Nikouei, A.
Baghaiyan, M.
Fattahi, A.
Powiązania:
https://bibliotekanauki.pl/articles/306342.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
regresja krokowa
antropometria
pływanie
sport
stepwise regression
stroke length
anthropometry
fascicle length
front crawl
Opis:
The aim of the present study was to evaluate the biomechanical (stroke rate, stroke length, and stroke index), anthropometrical (body height, body mass, body mass index, arm span, shoulders width, thigh, leg and upper arm lengths), and muscle architectural (muscle thickness, pennation angle, and fascicle length) parameters as predictors of 200-m front crawl swimming performance in young male swimmers. Twenty-two county level male swimmers (mean ±SD: age: 14.52 ± 0.77 years; body height: 173 ± 5 m; body mass: 60.5 ± 5.7 kg) performed a 200-m front crawl swimming test in a 25-m pool. Stepwise regression analysis revealed that biomechanical parameters (87%) characterized best 200-m front crawl swimming performance, followed by anthropometrical (82%) and muscle architectural (72%) parameters. Also, stroke length (R2 = 0.623), body height (R2 = 0.541), fascicle length of Triceps Brachii (R2 = 0.392) were the best single predictors that together explained 92% of the variability of the 200-m front crawl swimming performance in these swimmers. As a conclusion, with respect to higher performance prediction power of biomechanical parameters, technique should represent the core of the training program at these ages. In addition, these findings could be used for male young swimmers selection and talent identification.
Źródło:
Acta of Bioengineering and Biomechanics; 2015, 17, 3; 137-143
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multivariate analysis of hierarchical classification in split plot design with respect to the control
Autorzy:
Kuna-Broniowska, I.
Powiązania:
https://bibliotekanauki.pl/articles/26467.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
multivariate analysis
hierarchical classification
split plot design
Źródło:
International Agrophysics; 2000, 14, 3
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ES-QUAL model and customer satisfaction in online banking: evidence from multivariate analysis techniques
Autorzy:
Ahmed, Rizwan Raheem
Romeika, Giedrius
Kauliene, Raimonda
Streimikis, Justas
Dapkus, Rimantas
Powiązania:
https://bibliotekanauki.pl/articles/19233490.pdf
Data publikacji:
2020
Wydawca:
Instytut Badań Gospodarczych
Tematy:
ES-QUAL model
customer satisfaction
financial performance
Internet banking
normal theory method
bootstrapping method
Structural Equation Modeling
SEM
Opis:
Research background: The commercial banks are adopting online services for their transactions to stay competitive and fulfill the customers' needs. There is a dire need to satisfy online customers in a competitive environment. Thus, this paper employed the ES-QUAL model and two mediating variables and outlined the recommendations to the management of the online banking industry to develop effective strategies. Purpose of the article: The undertaken research aimed to examine the electronic banking service quality and customer satisfaction. For this purpose, we employed the ES-QUAL model and examined the direct impact of ES-QUAL dimensions and customer's satisfaction. The secondary task of this paper is to investigate the mediation effect of customer's trust and the perceived value in an association between the ES-QUAL model and customer satisfaction. Finally, we examine and check whether customer satisfaction translates into the business performance of commercial banks or not. Methods: To achieve the overall goal of this research, SEM-based multivariate approach has been used, including confirmatory factor analysis, exploratory factor analysis, and multiple approaches (normal theory, and bootstrapping) to examine the moderation between the exogenous and endogenous variables. For the validation of hypotheses and results, a financial analysis has been performed simultaneously with the primary analysis. The research is done for a sample of 910 respondents of the account holders of five top commercial banks of Pakistan. Findings & Value added: The outcomes of the direct investigation revealed an affirmative, and potent impact of ES-QUAL dimensions on customer's satisfaction. The outcomes of the indirect relationship exhibited that the perceived value and trust mediate ES-QUAL dimensions and customer satisfaction. The secondary data of selected five commercial banks and ratios analysis validated the results of the ES-QUAL model, and it is concluded that the results are linear with the outcomes of customers' satisfaction of primary analysis.
Źródło:
Oeconomia Copernicana; 2020, 11, 1; 59-93
2083-1277
Pojawia się w:
Oeconomia Copernicana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
BIM w projektowaniu konstrukcji. Optymalizacja kratownicy przestrzennej
Multivariate analysis of space frame using BIM technology
Autorzy:
Radzik, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/128988.pdf
Data publikacji:
2017
Wydawca:
PWB MEDIA Zdziebłowski
Tematy:
modelowanie informacji o budynku
technologia BIM
analiza wielowymiarowa
kratownica przestrzenna
parametryzacja modelu
building information modelling
BIM technology
multivariate analysis
space frame
model parameterization
Opis:
W artykule zostało przedstawione wykorzystanie technologii BIM przy optymalizacji kratownicy przestrzennej. Została zobrazowana analiza wielowariantowa kratownicy dla ustalonych wartości parametrów geometrycznych oraz zaproponowano schemat postępowania przy optymalizacji tego typu konstrukcji. Na podstawie przeprowadzonych obliczeń wyciągnięto wnioski dotyczące zaleceń odnośnie do kształtowania kratownic przestrzennych oraz wrażliwości wyników wobec wartości przyjętych parametrów.
The article shows the use of BIM technology in the optymalization of space frame. Multivariate analysis of structure for fixed values of geometrical parameters was illustrated. Worklow for optimizing this type of construction was proposed. Conducted calculations shown some recommendations for the shape of space frame forming.
Źródło:
Builder; 2017, 21, 4; 75-77
1896-0642
Pojawia się w:
Builder
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 271

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