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Tytuł:
An application of radar charts to geometrical measures of structures’ of conformability
Autorzy:
Binderman, Zbigniew
Borkowski, Bolesław
Szczesny, Wiesław
Powiązania:
https://bibliotekanauki.pl/articles/453247.pdf
Data publikacji:
2011
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
radar method
radar measure of conformability
Dice’s Jaccard’s measure of similarity
synthetic measures
classification
cluster analysis
Opis:
In the following work we presented a method of using radar charts to calculate measures of conformability of two objects according to formulasgiven by, among others, Dice, Jaccard, Tanimoto and Tversky. This method incorporates another one presented by the authors of this study [Binderman, Borkowski, Szczesny 2010]. Presented methods can be also utilized to define similarities between given objects, as well as to order and group objects. Measures described in this work satisfy the condition of stability as they do not depend on the order of studied features.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2011, 12, 1; 1-14
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ANALIZA KONWERGENCJI ROZWOJU REGIONALNEGO W POLSCE W LATACH 2001-2012
A CONVERGENCE ANALYSIS OF REGIONAL DEVELOPMENT IN POLAND
Autorzy:
Kudrycka, Izabella
Powiązania:
https://bibliotekanauki.pl/articles/659993.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Rozwój regionalny
PKB i inne mierniki
analiza konwergencji
entropia. miara niedokładności miara podobieństwa
cechy rozwoju regionalnego Polski.
Regional development
GDP and other indicators
convergence analysis
entropy
inequality measure
similarity measure
features of regional development in Poland.
Opis:
A new method based on information theory is used in analysis of the characteristic features of the regional development in Poland during the period 2001–2013. The first part of this paper contains the presentation of the method and its advantages with comparison to other methods used in convergence analysis of regional development. Regional distributions of certain variables representing different socio-economic phenomena are compared with the distribution of basic variables treated as a pattern, and the proposed similarity measures are estimated.  An analysis of the changes in the similarity measures over time is the basis for concluding whether convergence of regional development has been observed. The second part is devoted to an empirical analysis of convergence versus divergence of regional development on the second level disaggregation (16 provinces) in Poland. The different aspects of regional development such as human capital, economy, households, infrastructure and environment are examined. The convergence or divergence processes are presented in the charts. Conclusions of the economical nature, as well as methodological, ended the paper.
Nowa metoda – oparta na teorii informacji – została wykorzystana w analizie charakterystycznych cech rozwoju regionalnego w Polsce, w latach 2001–2013. Pierwsza część referatu poświęcona jest prezentacji metody i jej zalet w porównaniu z innymi metodami stosowanymi w analizie konwergencji rozwoju regionalnego. Rozkłady wybranych zmiennych odzwierciedlających różne zjawiska społeczno-gospodarcze według regionów, porównywane są z rozkładami zmiennych bazowych traktowanych, jako wzorzec i stanowią podstawę oszacowania miar podobieństwa. Z kolei analiza zmian w czasie miar podobieństwa umożliwia określenie czy występuje konwergencja rozwoju regionalnego, czy też mamy do czynienia z procesem dywergencji. Druga część referatu zawiera wyniki badań empirycznych dla 16 województw Polski i określenie charakteru rozwoju regionalnego, a więc występowania konwergencji, lub też zjawiska przeciwnego. Analiza konwergencji dotyczy różnych aspektów rozwoju regionalnego takich, jak kapitał ludzki, gospodarka, gospodarstwa domowe, infrastruktura i środowisko. Procesy konwergencji, bądź też dywergencji prezentowane są na wykresach. Ostatnia część referatu zawiera wnioski zarówno natury ekonomicznej, jak i metodologicznej.
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2014, 6, 308
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza ruchu w sieci komputerowej w oparciu o modele multifraktalne
Computer network traffic analysis based on multifractal models
Autorzy:
Burdacki, M.
Dymora, P.
Mazurek, M.
Powiązania:
https://bibliotekanauki.pl/articles/194509.pdf
Data publikacji:
2017
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
analiza ruchu sieciowego
sniffing
analiza samopodobieństwa
analiza multifraktalna
wykładnik Hursta
network traffic analysis
self-similarity analysis
multifractal analysis
Hurst exponent
Opis:
Celem badań była analiza ruchu w sieci komputerowej z wykorzystaniem wybranych modeli multifraktalnych. W części teoretycznej omówiono podstawowe zagadnienia związane z oprogramowaniem zbierającym dane w sieci komputerowej, klasyfikacją przebiegów czasowych przy użyciu wykładnika Hurst’a. Opisano metody wykorzystane do wyznaczenia widm multifraktalnych. W części badawczej dokonano analizy przepływu ruchu w sieci komputerowej na podstawie liczby pakietów oraz prędkości przesyłania danych. Wykonano analizę wykładnika Hurst’a wyznaczanego dla poszczególnych przebiegów czasowych. Dokonano analizy widm multifraktalnych utworzonych dla badanych rodzajów ruchu sieciowego.
The aim of this work was computer network traffic analysis. Theoretical part describes issues referring to network traffic capture software, time-series classification using Hurst exponent and multifractal spectrum creating methods. In research part was made an analysis of network traffic based on a number of packets and data transfer speed. It was also made a Hurst exponent analysis and a multifractal spectrum analysis for each type of analyzed network traffic. After the research it was possible to draw conclusions about characteristic of analyzed network traffic.
Źródło:
Zeszyty Naukowe Politechniki Rzeszowskiej. Elektrotechnika; 2017, z. 36 [296], nr 3, 3; 43-52
0209-2662
2300-6358
Pojawia się w:
Zeszyty Naukowe Politechniki Rzeszowskiej. Elektrotechnika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Gas and Dust Emissions From the Mining and Quarrying Sector in the European Union Countries
Autorzy:
Tutak, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/2064909.pdf
Data publikacji:
2020
Wydawca:
STE GROUP
Tematy:
mining and quarrying
gas emissions
dust emissions
analysis of similarity
European Union countries
Opis:
Despite the ongoing changes in the energy and economic structure of the European Union countries, mineral and energy resources such as hard coal, brown coal, natural gas, copper ores, zinc ores and many other minerals continue to be extracted. Each year, the mining and extraction sector emits thousands of tons of harmful substances into the atmosphere, in the form of greenhouse and other air-polluting gases, as well as harmful dusts. These substances include, amongst others, carbon dioxide, methane, carbon monoxide, as well as PM2.5 and PM10. The European Union climate policy clearly recommends that the exploitation of mineral resources be carried out in full respect of the principles of their rational, economical and environmentally neutral acquisition, which is confirmed by the promoted strategy of sustainable development economy. Therefore, this means the necessity to undertake actions aimed at limiting the emission of greenhouse gases and air pollutants into the atmosphere. To assess the actions taken by the European Union countries to date with respect to limiting those emissions, a comparative analysis was carried out for the particular countries. This analysis encompassed the emission of harmful substances from the mining and quarrying sector by the European Union countries in the years 2008 and 2017. The purpose of the analysis was to show the diversity of those countries in terms of the emission of harmful gases and dusts, as well as to divide them into similar groups. Such a division paves the way for developing a common climate policy and exchanging experiences between the countries from the particular groups. The European Union countries were divided into similar groups using the k-means grouping method. Comparison was also made for the emissions of the substances under analysis for the particular countries over the research years. The results obtained unequivocally demonstrate that this emission has been limited in the European Union, but there are countries where the emission of certain substances has increased.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2020, 3, 1; 71--82
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of series of measurements from job-centric monitoring by statistical functions
Autorzy:
Hilbrich, M.
Frank, M.
Powiązania:
https://bibliotekanauki.pl/articles/305830.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
job-centric monitoring
monitoring
similarity
series of measurements
statistical functions
grid
cloud
analysis
Opis:
The rising number of executed programs (jobs) enabled by the growing amount of available resources from Clouds, Grids, and HPC (for example) has resulted in an enormous number of jobs. Nowadays, most of the executed jobs are mainly unobserved, so unusual behavior, non-optimal resource usage, and silent faults are not systematically searched and analyzed. Job-centric monitoring enables permanent job observation and, thus, enables the analysis of monitoring data. In this paper, we show how statistic functions can be used to analyze job-centric monitoring data and how the methods compare to more-complex analysis methods. Additionally, we present the usefulness of job-centric monitoring based on practical experiences.
Źródło:
Computer Science; 2017, 18 (1); 3-19
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Similarities Between the European Union Countries in Terms of Sustainable Energy and Climate Development
Autorzy:
Tutak, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/2064549.pdf
Data publikacji:
2021
Wydawca:
STE GROUP
Tematy:
sustainable energy and climate development
similarity analysis
EU countries
artificial neural networks
Opis:
Energy and climate issues are an essential part of the sustainable development process of the EU countries. They are also one of the primary objectives of international policy, as evidenced by their inclusion in Agenda 2030, adopted by the UN in 2015 among the Sustainable Development Goals. The implementation of these goals is also taking place in the EU countries. Although climate protection and energy transition activities have been undertaken in the EU for years, individual countries significantly vary in this regard. The aim of the research, the results of which are presented in this paper, was to analyze similarities between the EU countries in terms of sustainable energy and climate development. The analysis was conducted for all EU countries, based on 14 indicators characterizing energy and climate sustainability, in energy, climate, social and economic dimensions. Kohonen’s artificial neural networks were used for analysis. The research was conducted for data from the period between 2009-2018. The results showed that in the studied period (10 years), significant differences were found between the EU countries. A high level of energy and climate development was reported for Sweden, Denmark, Austria and France, among other states, and a low level for e.g., the Czech Republic, Poland and Bulgaria.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2021, 4, 1; 86--96
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the similarity of hard coal mines in terms of the number of dangerous incidents caused by the activation of natural hazards
Autorzy:
Tutak, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/2064775.pdf
Data publikacji:
2019
Wydawca:
STE GROUP
Tematy:
coal mine
natural hazards
cluster analysis
taxonomic methods
analysis of similarity
Opis:
Hard coal mines and mining enterprises involved in hard coal exploitation in the area of the Upper Silesian Coal Basin (Górnośląskie Zagłębie Węglowe) are characterised by the presence of natural hazards typical of this type of exploitation. These hazards include the risks related to methane, coal dust explosion, endogenous fires, as well as rock burst and caving of roof rocks. The article presents the results of a taxonomic analysis aimed at determining the similarity of hard coal mines and mining enterprises in Poland in terms of the dangerous incidents caused by the risks related to methane, coal dust explosion, endogenous fires, as well as rock burst and caving of roof rocks. The analysis was carried out for the 2008-2018 data and encompassed a total of 26 hard coal mines and mining enterprises located in the Upper Silesian Coal Basin. The analysis was performed using the k-means method of non-hierarchical clustering. The main objective of the article was to determine homogenous groups (clusters) of mines exhibiting the greatest similarity in terms of dangerous incidents caused by the activation of natural hazards in the years 2008-2018. These data can be successfully used for the development of preventive measures and risk analyses for these enterprises.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2019, 2, 1; 91--100
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of similarity method of distance courses describing the elements content in cement concrete after 50 forced thermal cycles
Autorzy:
Linek, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/245164.pdf
Data publikacji:
2019
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
cement concrete
airfield pavement
analysis of similarity
forced thermal cycles
Opis:
The article presents material solution based on the application of ceramic dust as concrete mix component intended for airfield pavements. The applied dust influences the changes in internal structure of concrete composite. Diversification of internal microstructure of cement concrete using the suggested dust has significant influence on the improvement of compressive strength. The laboratory analyses included concretes curing in standard conditions and concretes subject to thermal cycles representing the destructive influence of imposed loading. Comparative SEM observations of concretes subject to 50 thermal cycles proved significant influence of dust on internal structure of composite. In the study 6 samples were selected, which, each time, were intended for the laboratory tests. The applied similarity analysis of distance courses in case of this concrete. Similarity indexes between input and target sequence were defined. Diagrams presenting the similarity of the analysed concretes were prepared (after 28 days of curing and after 50 thermal cycles). It was proved that the suggested method can be used to assess the elements content and define the similarity of concrete intended for airfield pavements in the selected of areas (cement matrix, contact area between fine aggregate and cement matrix, contact area between coarse aggregate and cement matrix and contact area between air voids and cement matrix).
Źródło:
Journal of KONES; 2019, 26, 4; 155-162
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of similarity method of distance courses describing the elements content in cement concrete after frost resistance test
Autorzy:
Linek, M.
Powiązania:
https://bibliotekanauki.pl/articles/246285.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
airfield pavements
cement concrete
ceramic additive
frost resistance
analysis of similarity
Opis:
The work concerns test results of cement concrete and the use of similarity analysis of distance course. Research procedure was presented and the obtained laboratory tests results were discussed. Composition of concrete mixes was designed. The cement concrete composition includes cement, coarse aggregate, fine aggregate, water, admixtures and a ceramic addition. The addition of ceramic was used as a replacement for part of the fine aggregate Fresh concrete mixture parameters were tested and basic parameters of hardened concrete were defined (density, compression strength and tensile strength). The scope of works included concretes intended for airfield pavements and this concretes after frost resistance test. The test has been conducted in diversified media generally used in the course of winter maintenance. Subject to observations of internal structure of concretes and conducted chemical microanalyses using scanning electron microscope, the contents of diversified elements in four zones were specified. The following zones were subject to analysis: cement matrix, contact area between air pores and cement matrix, contact area between fine aggregate and cement matrix and contact area between coarse aggregate and cement matrix. Based on the results obtained diagrams similarity of the analysed concretes were prepared.
Źródło:
Journal of KONES; 2018, 25, 3; 331-337
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of similarity method of distance courses describing the elements content in concrete intended for airfield pavements
Autorzy:
Linek, M.
Powiązania:
https://bibliotekanauki.pl/articles/244596.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
cement concrete
airfield pavement
analysis of similarity
Opis:
The work presents the applied similarity methods of distance courses in case of cement concrete intended for airfield pavements. Composition of concrete mixes was designed and their parameters were defined. Compressive strength of hardened concrete and components thereof and the occurrence of crystal phases were determined. Subject to observations of internal structure of concretes and conducted chemical microanalyses using scanning electron microscope, the contents of diversified elements in four zones were specified. Similarity indexes between input and target sequence were defined. Diagrams presenting the similarity of the analysed concretes were prepared. It was proved that the suggested method could be used to assess the elements content and define the similarity of concrete intended for airfield pavements. The scope of works consisted of two stages. During the first one, two series of cement concrete were prepared. The analysis included cement concretes intended for airfield pavements, in compliance with requirements. The influence of variable environmental conditions with respect to standard ones on the selected features of hardened concretes was assessed.
Źródło:
Journal of KONES; 2017, 24, 4; 385-392
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of similarity method of distance courses describing the elements content in pavement quality concrete
Autorzy:
Linek, M.
Nita, P.
Powiązania:
https://bibliotekanauki.pl/articles/245753.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
cement concrete
airfield pavement
analysis of similarity
Opis:
The publication presents the application of similarity analysis of distance courses. This method has been applied to define similarity of cement concrete intended for airfield pavements. The scope of works included standard concretes intended for airfield pavements and concretes after frost resistance test. The test has been conducted in diversified media used in the course of winter maintenance. The nature of resistance of pavement quality concrete was discussed with respect to frost resistance thereof. Research procedure was presented and the obtained laboratory tests results were discussed. Concrete samples were subject to observations using scanning electron microscope in order to define changes occurring in the internal microstructure. Chemical microanalysis of concrete composition before, in the course of and after the frost resistance test and the occurring changes were specified. The obtained laboratory tests results were intended for the purposes of the similarity analysis. Results obtained in case of standard pavement quality concrete were considered as comparative values. Characteristics of the remaining concretes were referred to these values and then similarity of distance courses were analysed. It was proved that BWMt concrete was the most similar concrete to the comparative concrete.
Źródło:
Journal of KONES; 2017, 24, 4; 393-398
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of similarity method of distance courses describing the elements content in typical cement concrete
Autorzy:
Linek, M.
Powiązania:
https://bibliotekanauki.pl/articles/242521.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
transport
airfield pavement
cement concrete
concrete microstructure
analysis of similarity
Opis:
The article concerns the use of similarity analysis of distance course in the internal area of cement concrete intended for airfield pavements. Research procedure was presented and the obtained laboratory tests results were discussed. The contents of diversified elements in four zones (cement matrix, contact area between air pores and cement matrix, contact area between fine aggregate and cement matrix and contact area between coarse aggregate and cement matrix) were specified by using scanning electron microscope. Based on the results obtained diagrams similarity of the analysed of areas in the concretes were prepared. The purpose of this article has been the assessment of an opportunity to apply the analysis of similarity of distance courses with respect to cement concrete intended for airfield pavements. The scope of article consisted of two stages. The analysis included cement concretes intended for airfield pavements, in compliance with requirements. The thermal analysis method was used; the selected concrete components were determined by means of quantitative method. The occurrence of crystalline stages was determined using X-ray diffraction method. Internal structure of concrete composite was assessed with the scanning electron microscope.
Źródło:
Journal of KONES; 2018, 25, 4; 239-246
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of similarity method of distance courses describing the elements content in typical cement concrete after thermal cycles
Autorzy:
Linek, Małgorzata
Nita, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/242490.pdf
Data publikacji:
2019
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
cement concrete
airfield pavement
analysis of similarity
thermal cycles
Opis:
The work concerns the use of similarity analysis of distance course. Composition of concrete mixes was designed. The cement concrete composition includes cement, coarse aggregate, fine aggregate, water and admixtures. The laboratory analyses included concretes curing in standard conditions and concretes subject to thermal cycles representing the destructive influence of imposed loading. Laboratory tests assumed the fifty thermal test cycles. A single test cycle included process of alternate heating and cooling. Recurrent influence of temperature stimulated the impact of aircraft on airfield pavements. The assumed heating and cooling time corresponded to the time during which the aircraft effected the most frequently used airfield pavement within the area of Poland. Comparative SEM observations of concretes subject to thermal cycles were conducted. An increase in the width of microcracs has been observed. In case of crystallization, there is diversification within the area of cement matrix, contact area between cement matrix and aggregate grains and in case of porosity characteristics of both concretes. Similarity indexes between input and target sequence were defined. Diagrams presenting the similarity of the analysed concretes were prepared (after 28 days of curing and after thermal cycles). It was proved that the suggested method could be used to define the similarity of concrete intended for airfield pavements.
Źródło:
Journal of KONES; 2019, 26, 4; 163-170
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of genetic diversity in cultivated tomato (Solanum lycopersicum L.) genotypes using RAPD primers
Autorzy:
Sharifova, S.
Mehdiyeva, S.
Theodorikas, K.
Powiązania:
https://bibliotekanauki.pl/articles/2114.pdf
Data publikacji:
2013
Wydawca:
Instytut Ogrodnictwa
Tematy:
random amplified polymorphic DNA analysis
tomato
Solanum lycopersicum
genotype
unweighted pair group method
cluster analysis
breeding
polymorphism
similarity
Źródło:
Journal of Horticultural Research; 2013, 21, 1
2300-5009
Pojawia się w:
Journal of Horticultural Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chemical properties and similarity of habitats of Utricularia species in Lower Silesia, Poland
Autorzy:
Kosiba, P
Powiązania:
https://bibliotekanauki.pl/articles/57236.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
cluster analysis
habitat
microhabitat
chemical property
similarity
botany
water property
Utricularia
Opis:
The study object consisted of 28 microhabitats of five Utricularia species localized in the Province of Lower Silesia, Poland. The aim of the study was to analyse the chemical properties of water and to present the differentiation of microhabitats in respect of their chemism, i.e., whether there are differences between the microhabitats, and which of the Utricularia species show the highest tolerance to the chemical properties of water. Analysed were the contents of NO-2, NO-3, NH+4, PO-24, K+, Ca+2, Mg+2, Na+, Fe+3, SO-24, total hardness of water, organic substance, pH and trophicity of water. The differentiation of microhabitats of Utricularia intermedia and U. minor appeared to be small, but much higher in case of U. vulgaris, U. australis and U. ochroleuca. The similarity of microhabitats has been determined by cluster analysis. The tree plot showed the least similarity of U. minor and U. intermedia, which occupy an extreme position in relation to microhabitats of the remaining species. Such a grouping suggests that this species is clearly distinct because of its connection with water properties.
Źródło:
Acta Societatis Botanicorum Poloniae; 2004, 73, 4
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
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