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Tytuł:
Wykorzystanie metod wielowymiarowych w określeniu pozycji konkurencyjnej gminy na przykładzie województwa lubelskiego
The use of multi dimensional methods in defining the competitive position of the community on the example Lubelskie voivodeship
Autorzy:
Adamowicz, Mieczysław
Janulewicz, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/453073.pdf
Data publikacji:
2012
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
konkurencyjność gminy
metoda Hellwiga
metoda Warda
competitiveness of the municipality
Hellwig method
the method of Ward
Opis:
Artykuł prezentuje wyniki badań konkurencyjności gmin województwa lubelskiego przy wykorzystaniu metod wielowymiarowych. W pracy wykorzystano dwie metody: wzorca rozwoju Hellwiga oraz analizę skupień Warda. Badania wykazały przydatność tych metod w strategicznym zarządzaniu gminą. Metoda Wzorcowa Hellwiga pozwala na dokonanie klasyfikacji gmin pod względem konkurencyjności, a metoda analizy skupień Warda okazała się pomocna do klasyfikacji gmin według podobieństwa względem przyjętych zmiennych.
Streszczenie (jęz. angielski) - The paper presents an attempt to use both quantitative and qualitative veriables to analyze complex phenomena. First part of the paper focuses some normalisation methods that often occur in empirical works regarding their characteristics. Special attention concerns zero unitarization method due its adequacy in normalising both quantitative and qualitative veriables. The latter part of the paper presents the metod of quantification and normalization chosen qualitative variables. The whole procedure of normalization, construction of synthetic variable and ranking is illustrated by empirical example. Results of research on the competitiveness of communes in Lubelskie voivodeship consented with the use of multi dimensional methods are presented in the article. Two methods: Hellwig development pattern and Ward aggregation analysis were used in the work. The Hellwig pattern method enable the classification of communes according the level of competitiveness while Ward aggregation analysis is helpful for classification of communes according variables used in research Results of research on the competitiveness of communes in Lubelskie voivodeship consented with the use of multi dimensional methods are presented in the article. Two methods: Hellwig development pattern and Ward aggregation analysis were used in the work. The Hellwig pattern method enable the classification of communes according the level of competitiveness while Ward aggregation analysis is helpful for classification of communes according variables used in research The aim of the study was to show the analogy in the changes in the structure of household expenses in the chosen EU countries and Poland between1988 and 2009. The direction and pace of the changes in the budgets of Polish households can be predicted by using the principle of analogy. Classification of the objects has been carried out based on the modified kmeans method. Three classes of similarities have been distinguished. The structure of Polish households budgets from 2004 – 2008 has turned out the most similar to the structure of the expenses of Portuguese households from 1988 – 2005. In this work we analyzed the changes of the structure of value of agriculture products’ exports in Poland during 1980 – 210 in comparison to other EU countries. In this comparative analysis we chose those EU countries whose largest fraction of exports is constituted by agriculture products: Germany, France, Great Britain, Netherlands, Spain and Italy. To study the changes of the structure of export of agriculture products during those 31 years we used multidimensional analysis methods: Gini index and GCCA – Grade Correspondence Cluster Analysis. To visualize the differentiation of structures of export of agriculture products we used overrepresentation maps (prepared in GradeStat). Analysis was based on 9 groups of agriculture products in million USD: live animals (S2-00), meat and preparations (S2-01), dairy products and birds’ eggs (S2-02), Fish, crustacean and molluscs, and preparations thereof (S2-03), cereals and cereal preparations (S2-04), vegetables and fruit (S2-05), suger, suger preparations and honey (S2-06), coffee, tea, cocoa, spices, and manufactures thereof (S2-07), feeding stuff for animals (not including unmilled cereals (S2-08), miscellaneous edible products and preparations (S2-09). The completed studies have shown a large differentiation of the structure of export of agriculture products in all researched countries. However, the largest differentiation was present in Poland. A significantly high dynamic of growth was observed within three groups of products: dairy products and birds’ eggs (S2-02), Fish, crustacean and molluscs, and preparations thereof (S2-03), vegetables and fruit (S2-05). The participation of those groups in the country’s export has been steadily growing. On the other hand, the participation of until now standard groups of agriculture products (unprocessed: live animals (S2-00) and meat and preparations (S2-01)) has been decreasing. In this work we analyzed the changes of the structure of value of agriculture products’ exports in Poland during 1980 – 210 in comparison to other EU countries. In this comparative analysis we chose those EU countries whose largest fraction of exports is constituted by agriculture products: Germany, France, Great Britain, Netherlands, Spain and Italy. To study the changes of the structure of export of agriculture products during those 31 years we used multidimensional analysis methods: Gini index and GCCA – Grade Correspondence Cluster Analysis. To visualize the differentiation of structures of export of agriculture products we used overrepresentation maps (prepared in GradeStat). Analysis was based on 9 groups of agriculture products in million USD: live animals (S2-00), meat and preparations (S2-01), dairy products and birds’ eggs (S2-02), Fish, crustacean and molluscs, and preparations thereof (S2-03), cereals and cereal preparations (S2-04), vegetables and fruit (S2-05), suger, suger preparations and honey (S2-06), coffee, tea, cocoa, spices, and manufactures thereof (S2-07), feeding stuff for animals (not including unmilled cereals (S2-08), miscellaneous edible products and preparations (S2-09). The completed studies have shown a large differentiation of the structure of export of agriculture products in all researched countries. However, the largest differentiation was present in Poland. A significantly high dynamic of growth was observed within three groups of products: dairy products and birds’ eggs (S2-02), Fish, crustacean and molluscs, and preparations thereof (S2-03), vegetables and fruit (S2-05). The participation of those groups in the country’s export has been steadily growing. On the other hand, the participation of until now standard groups of agriculture products (unprocessed: live animals (S2-00) and meat and preparations (S2-01)) has been decreasing. In this work we analyzed the changes of the structure of value of agriculture products’ exports in Poland during 1980 – 210 in comparison to other EU countries. In this comparative analysis we chose those EU countries whose largest fraction of exports is constituted by agriculture products: Germany, France, Great Britain, Netherlands, Spain and Italy. To study the changes of the structure of export of agriculture products during those 31 years we used multidimensional analysis methods: Gini index and GCCA – Grade Correspondence Cluster Analysis. To visualize the differentiation of structures of export of agriculture products we used overrepresentation maps (prepared in GradeStat). Analysis was based on 9 groups of agriculture products in million USD: live animals (S2-00), meat and preparations (S2-01), dairy products and birds’ eggs (S2-02), Fish, crustacean and molluscs, and preparations thereof (S2-03), cereals and cereal preparations (S2-04), vegetables and fruit (S2-05), suger, suger preparations and honey (S2-06), coffee, tea, cocoa, spices, and manufactures thereof (S2-07), feeding stuff for animals (not including unmilled cereals (S2-08), miscellaneous edible products and preparations (S2-09). The completed studies have shown a large differentiation of the structure of export of agriculture products in all researched countries. However, the largest differentiation was present in Poland. A significantly high dynamic of growth was observed within three groups of products: dairy products and birds’ eggs (S2-02), Fish, crustacean and molluscs, and preparations thereof (S2-03), vegetables and fruit (S2-05). The participation of those groups in the country’s export has been steadily growing. On the other hand, the participation of until now standard groups of agriculture products (unprocessed: live animals (S2-00) and meat and preparations (S2-01)) has been decreasing. In this work we analyzed the changes of the structure of value of agriculture products’ exports in Poland during 1980 – 210 in comparison to other EU countries. In this comparative analysis we chose those EU countries whose largest fraction of exports is constituted by agriculture products: Germany, France, Great Britain, Netherlands, Spain and Italy. To study the changes of the structure of export of agriculture products during those 31 years we used multidimensional analysis methods: Gini index and GCCA – Grade Correspondence Cluster Analysis. To visualize the differentiation of structures of export of agriculture products we used overrepresentation maps (prepared in GradeStat). Analysis was based on 9 groups of agriculture products in million USD: live animals (S2-00), meat and preparations (S2-01), dairy products and birds’ eggs (S2-02), Fish, crustacean and molluscs, and preparations thereof (S2-03), cereals and cereal preparations (S2-04), vegetables and fruit (S2-05), suger, suger preparations and honey (S2-06), coffee, tea, cocoa, spices, and manufactures thereof (S2-07), feeding stuff for animals (not including unmilled cereals (S2-08), miscellaneous edible products and preparations (S2-09). The completed studies have shown a large differentiation of the structure of export of agriculture products in all researched countries. However, the largest differentiation was present in Poland. A significantly high dynamic of growth was observed within three groups of products: dairy products and birds’ eggs (S2-02), Fish, crustacean and molluscs, and preparations thereof (S2-03), vegetables and fruit (S2-05). The participation of those groups in the country’s export has been steadily growing. On the other hand, the participation of until now standard groups of agriculture products (unprocessed: live animals (S2-00) and meat and preparations (S2-01)) has been decreasing. The paper presents an investigation within the subject of fuzzy methodology concerning some phenomena, which is the consequence of their fuzzy nature. In order to illustrate some fuzzy procedures and their results an empirical example is included. The paper presents the forecast of agrarian structure of voivodships up to 2020 according to typological groups. The data were taken from Statistical Yearbook of Agriculture edited by Central Statistical Office. The forecast was based on the method of structures’ forecasting proposed by Nowak. Then, on the basis of fuzzy classification method, the prediction of spatial differentiation of the structure under investigation up to 2020 was evaluated. The forecast presents what kind of changes in agrarian structure of voivodships will take place if the direction and rate of changes within the period of 2002 – 2009 remain stable. Investments of local communes are intentional expenditures of capital aimed at increase in tangible and intangible benefits of the commune. All effective expenditures born by the commune on construction and reconstruction of its wealth are treated as funds positively influencing its development and well-being of citizens. The paper was intended to assess the level of dispersion, i.e. concentration of expenditures on investments born by 19 cities acting as counties in Silesian voivodship. The fundamental measure used in research was concentration coefficient proposed by Karol Kukuła and the basis for calculations was data presented in budget usage collected by Regionalna Izba Obrachunkowa in Katowice. The regression theory involves methods and tools of exact description of relations between various types of phenomena. Since many years, it is used for the economic and econometric models formulation, however, as the analyze of literature indicates, regression is understood in different ways. This article is a reflection on the application of quantitative methods in economics processes modeling, with particular emphasis on the relations between them, expressed by regression. The regression theory involves methods and tools of exact description of relations between various types of phenomena. Since many years, it is used for the economic and econometric models formulation, however, as the analyze of literature indicates, regression is understood in different ways. This article is a reflection on the application of quantitative methods in economics processes modeling, with particular emphasis on the relations between them, expressed by regression. The article shows the practical application of the Analytic Network Process in solving decision problems from the field of management. The ANP Model proposed in this paper includes all kinds of dependencies and feedback between decision-making elements in the area of manufacturing management, reflecting the complexity of the problem and actual compounds that occur both between the agents within the company as well as in its surroundings. The paper emphasises the possibility of using experts’ opinion, who gave importance (specifying the validity) of decision-making elements using pairwise comparisons, allowing the identification of factors and the evaluation of their impact on the increase in the volume of production. The article shows the practical application of the Analytic Network Process in solving decision problems from the field of management. The ANP Model proposed in this paper includes all kinds of dependencies and feedback between decision-making elements in the area of manufacturing management, reflecting the complexity of the problem and actual compounds that occur both between the agents within the company as well as in its surroundings. The paper emphasises the possibility of using experts’ opinion, who gave importance (specifying the validity) of decision-making elements using pairwise comparisons, allowing the identification of factors and the evaluation of their impact on the increase in the volume of production. Entering into European Union and financial markets crisis left their stamps on Polish economy. Land market was influenced by these changes the most significantly since December 5, 1989, when new regulations concerning free transactions in land appeared. In the nineties farmland was treated as an additional superfluous ballast, however, together with Polish accession to EU it became one of the most popular alternative investments bringing profiteers huge profits in short term. Unfortunately, financial crisis trundling on the real estate market sadly revised investors’ optimistic plans. Abortive investments in too expensive lands without possibility of being transformed into building terrains became problems to people without appropriate knowledge and skills who had wanted to earn quickly. Currently, despite of spreading fashion of land purchase, the market has been weakened significantly. It can be admitted that finally the farmers instead of profiteers are interested in land purchase, which is the beginning of situation stabilization and the first sign of market maturity. Calculus of variations and optimal control theory are on one hand side intensively developing mathematical theories on the other at the center of both of them lies investigating of extremal problems. In connection with extremal problems there naturally arise questions important for mathematics and applications: 1) does there exist a solution of the problem? 2) is the solution unique? 3) how to really find the solution? For problems with constrains, a general principle was proposed by Lagrange. This idea can be generalized far beyond the limits of the problems that he considered. In the paper we present unified formulation of problems of calculus of variations and optimal control in connection with Lagrange principle. There is a 5:1 ratio between the number of households and business entities. This ratio is considered “quantum satis”. The purpose of this paper is to estimate level of local government unit’s financial independence in eastern Poland. For this purpose it was used multidimensional statistical analysis allowing to describe complex effect with help of one variable, so called value of synthetic variable (Hellwig’s method, additive aggregation function). The purpose of this paper is to estimate level of local government unit’s financial independence in eastern Poland. For this purpose it was used multidimensional statistical analysis allowing to describe complex effect with help of one variable, so called value of synthetic variable (Hellwig’s method, additive aggregation function). A number of recent papers on the management of the stock portfolio describes the advantages of the naïve diversification. The naïve strategy performs similarly to the ones which use sophisticated mathematical models. In this paper the strategy is presented which statistically significantly overperforms the naïve strategy. The aim of the paper was to make an attempt to assess the influence of belonging to selected population groups on the size of flows between different states of economic activity, as well as to determine the nature of unemployment found in the various population groups, especially among the rural population. The research showed that the changes in economic activity are mainly affected by structural factors, but in some population groups it is possible to improve the employment situation through actions towards an improvement of the prosperity on the market of goods and services. The aim of the paper was to make an attempt to assess the influence of belonging to selected population groups on the size of flows between different states of economic activity, as well as to determine the nature of unemployment found in the various population groups, especially among the rural population. The research showed that the changes in economic activity are mainly affected by structural factors, but in some population groups it is possible to improve the employment situation through actions towards an improvement of the prosperity on the market of goods and services. Dynamic development of organic farming in Poland is observed since 2004. At that time were introduced the subsidies to organic agricultural production for farms with the certificate of conformity and were in the course of the changes. The aim of this study is to present the dynamics of growth of the number and size of organic farms and the number of organic ecological factories in Poland in the years 2004-2010 and the designation of the forecasts for the next three years. To designate the forecasts of investigated phenomena it was used extrapolation of models of development trends method. In this paper we discuss the development of the rural population in Poland over the past 60 years and the latest demographic projections of Central Statistical Office. The main objects of our attention are the demographic processes in rural-urban cross-section. Poland belongs to the less urbanized countries in Europe. Among Polish neighbors, a lower proportion of urban population is only in Slovakia. However, in the past, differences in the level of urbanization between Poland and other European countries were much higher. In the years 1950-1990 the percentage of urban population in Poland increased from 35 to 62%. However, since 1990. share of rural population has ceased to fall and in the last few years have seen a decline in urbanization even in our country. The main reason for the change is a systematic change in the directions of rural-urban migration. More and more urban population moves to the village. Quite interestingly, this process began much earlier than the changed political system in Poland. Since 1975. decreases systematically negative balance of net rural-urban migration. Since 2000. more and more of the population migrates to the country than comes out. We also pay attention that a similar phenomenon of the growing importance of the share of rural population also occurs in other countries. However, while Poland is following the European countries also in the sphere of customary transformation, the village population seems to be the mainstay of traditional family values. In this paper we discuss the development of the rural population in Poland over the past 60 years and the latest demographic projections of Central Statistical Office. The main objects of our attention are the demographic processes in rural-urban cross-section. Poland belongs to the less urbanized countries in Europe. Among Polish neighbors, a lower proportion of urban population is only in Slovakia. However, in the past, differences in the level of urbanization between Poland and other European countries were much higher. In the years 1950-1990 the percentage of urban population in Poland increased from 35 to 62%. However, since 1990. share of rural population has ceased to fall and in the last few years have seen a decline in urbanization even in our country. The main reason for the change is a systematic change in the directions of rural-urban migration. More and more urban population moves to the village. Quite interestingly, this process began much earlier than the changed political system in Poland. Since 1975. decreases systematically negative balance of net rural-urban migration. Since 2000. more and more of the population migrates to the country than comes out. We also pay attention that a similar phenomenon of the growing importance of the share of rural population also occurs in other countries. However, while Poland is following the European countries also in the sphere of customary transformation, the village population seems to be the mainstay of traditional family values. In this article, the problem of optimization of crop production was formulated as nonlinear generalized transportation problem. As a solution the author proposed generalized quasi-basis method. The illustrative example completes the presentation. The study exemplifies an application of the multidimensional comparative analysis aiming at quantification of international competitiveness of the agri-food economy. The international competitive position was equated to a form of a synthetic measure. The coefficients trends allowed quantifying perspectives of equalization of international competitiveness levels between countries. The empirical investigation identified six patterns of the observed interdependences. Convergence should not be expected in the whole set, but in subgroups of objects. In the light of the Central Statistical Office data from 2010, farm equipment is shows very high differentiation in spatial aspect across Poland. The paper presents an attempt to construct ranking of voivodships with respect to the level of farm equipment. On the basis of zero unitarization method different variables are compared and used to form the synthetic variable. In consequence, three groups of districts were distinguished: of high, moderate and low level of farm equipment. This work is devoted to discussions on application of relative measures of accuracy of the ex-post forecasts. The authors showed that when the variable has a very large amplitude of seasonality indicators the average absolute forecast error (MAPE) can not be used. Theoretical study are illustrated on the example of thermal energy production. This work is devoted to discussions on application of relative measures of accuracy of the ex-post forecasts. The authors showed that when the variable has a very large amplitude of seasonality indicators the average absolute forecast error (MAPE) can not be used. Theoretical study are illustrated on the example of thermal energy production. The analysis of monthly prices of broiler chicken livestock in years 1991 - 2011 in this paper was presented. Decomposition of price time series was performed using method Census II/X11. Price of broiler chicken livestock characterize stable an stronger in recent years seasonality. In 2011 the seasonal index was ranged from 107,3% in August to 92,2% in December. In the range of six month more than half of price variability (51,4%) is a result of long period changes, 44,9% of variability is shaped by seasonal fluctuations and only 3,7% is made by irregulars fluctuations. In this paper, the rankings of the food industry sector companies listed on the Warsaw Stock Exchange were made on the basis of Taxonomic Attractiveness Measure of Investment. The following groups of variables were included in this study: liquidity ratios, profitability ratios, debt ratios, activity ratios, market-based ratios. Then analyzed whether the positions in the rankings of investigated companies remained stable over the period 2009-2011. In this paper, the rankings of the food industry sector companies listed on the Warsaw Stock Exchange were made on the basis of Taxonomic Attractiveness Measure of Investment. The following groups of variables were included in this study: liquidity ratios, profitability ratios, debt ratios, activity ratios, market-based ratios. Then analyzed whether the positions in the rankings of investigated companies remained stable over the period 2009-2011. The article focuses on trade between Japan and Poland, in 2000-2010 years, using the SITC (Standard International Trade Classification), identifying trends occurring among one of classification group: Food and live animals. Analysis of exports and imports between Japan and Poland shows big changes in trade with Japan and the large growing difference in the trade balance. Furthermore the imported and exported groups of products show market differences and demand in Japan. The paper presented classification of voivodships due to the selected financial data business accommodation and catering department. For this purpose it was used the multidimensional statistical analysis allowing describe complex effect with help of one variable, so called value synthetic variable. Among the factors that impact the absorption of European Union funds in Polish agriculture, natural, demographic, technical and organisational conditions of the development of agriculture can be differentiated. The basic objective of the article is to identify and quantify the factors, which significantly impact the territorial differentiation of the absorption of European Union Funds in Polish agriculture within the framework of the “Modernisation of agricultural holdings” Rural Development Programme for 2007-2013. Among the factors that impact the absorption of European Union funds in Polish agriculture, natural, demographic, technical and organisational conditions of the development of agriculture can be differentiated. The basic objective of the article is to identify and quantify the factors, which significantly impact the territorial differentiation of the absorption of European Union Funds in Polish agriculture within the framework of the “Modernisation of agricultural holdings” Rural Development Programme for 2007-2013. The wage effects of student numbers on particular fields of study in Poland are analyzed. It is found that any of the fields of study, i.e. humanitarian, business and economics, technical or natural sciences, contributes to an increase in wages on the macroeconomic level, but the whole effect is smaller for studies in economics, which could be an outcome of too high interest in that kind of education. On the other side, our results for technical studies could be viewed as an argument in favor of an excess labor market demand for engineers compared to their supply by the educational system.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2012, 13, 1; 17-28
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystanie analizy korespondencji w badaniach transgranicznego ruchu turystycznego w Wolińskim Parku Narodowym
Using the correspondence analisys in the research on transboundary tourist traffic in Wolin National Park
Autorzy:
Bąk, I.
Zbaraszewski, W.
Pieńkowski, D.
Powiązania:
https://bibliotekanauki.pl/articles/96518.pdf
Data publikacji:
2014
Wydawca:
Fundacja Ekonomistów Środowiska i Zasobów Naturalnych
Tematy:
analiza korespondencji
twarz Chernoffa
metoda Warda
turystyka transgraniczna
obszary chronione
parki narodowe
correspondence analysis
Chernoff's faces
Ward's method
cross-border tourism
protected areas
national parks
Opis:
Celem artykułu jest prezentacja wykorzystania wielowymiarowej analizy korespondencji do badania podróży turystycznych turystów polskich i niemieckich związanych z odwiedzinami Wolińskiego Parku Narodowego. Podjęto próbę wykrycia powiązań pomiędzy zmiennymi charakteryzującymi te podróże. Do obliczeń wykorzystano moduł Analiza korespondencji w pakiecie Statistica 10.0. W celu podwyższenia jakości odwzorowania przeprowadzono modyfikację wartości własnych według propozycji Greenacre’a. Ze względu na dość dużą liczbę wariantów analizowanych zmiennych zastosowano metodę Warda, która umożliwiła wyznaczenie powiązań pomiędzy wariantami zmiennych. Dodatkowo, dane zostały zobrazowane za pomocą metody twarzy Chernoffa, która umożliwiła zaprezentowanie różnic pomiędzy profilem preferencji statystycznego turysty niemieckiego i polskiego odwiedzającego Woliński Park Narodowy.
There is still a small contribution of German tourists visiting Polish natural protection areas at Polish- German borderlands despite the border checks elimination in 2007. An example of protected areas in Poland located at the borderland is the Wolin National Park (WNP); the share of foreign visitors of the park including Germans, is still marginal (approx. 0.7%). The paper is aimed at presentation of the possibilities of using multiple correspondence analysis to study Polish and German tourists visiting WPN. At fi rst the travel preferences have been illustrated by the method of Chernoff faces. The specific objective of the research was to investigate relationship between variables characterizing German and Polish tourists. Also Ward’s method was applied because of the relatively large number of analyzed variable variants; it allowed indicating the links between the variants. The latter revealed 3 groups of tourists visiting WPN; two of them distinguished different nationalities. The calculations and graphical presentations of the results have been computed with Statistica software version 10.0.
Źródło:
Ekonomia i Środowisko; 2014, 2; 238-251
0867-8898
Pojawia się w:
Ekonomia i Środowisko
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena wykorzystania narzędzi informatycznych na studiach
The use of IT tools in higher education
Оценка использования электронных приборов (инструментов) в университетах и других высших школах
Autorzy:
Bąk, Iwona
Wawrzyniak, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/543104.pdf
Data publikacji:
2016-11
Wydawca:
Główny Urząd Statystyczny
Tematy:
proces uczenia się
ICT
wielowymiarowa analiza korespondencji
metoda Warda
learning
multivariate correspondence analysis
Ward's method
процесс обучения
многомерный анализ соответственности
метод Уорда
Opis:
W artykule zaprezentowano wyniki badania, którego głównym celem było uzyskanie odpowiedzi na pytanie, w jakim stopniu korzystanie z komputera i Internetu wspomaga uczenie się na studiach wyższych. Badanie pozwoliło poznać również stan wyposażenia studentów w sprzęt informatyczny, sposoby jego wykorzystania oraz ocenić ich umiejętności informatyczne. Podjęto też próbę zbadania, czy cechy społeczno-demograficzne mogły mieć wpływ na udzielane przez studentów odpowiedzi. Ankietę przeprowadzono w kwietniu i maju 2015 r. wśród studentów studiów stacjonarnych największych szczecińskich uczelni. W badaniu wykorzystano metody statystyczne mające na celu charakterystykę rozkładów odpowiedzi oraz zależności między nimi. Ponadto zastosowano wielowymiarową analizę odpowiedniości (korespondencji), aby zidentyfikować współwystępowanie wybranych kategorii cech.
The article presents the results of a study whose main objective was to answer the question to what extent the use of the computer and the Internet supports learning in higher education. The study also made it possible to know the status of the equipment the students in the computer equipment, how to use it and to assess their skills. The survey was conducted in April and May 2015 among full-time students of the largest Szczecin universities. The study used statistical methods aiming at the characteristics of the distributions of responses and relationships between them. In addition, the authors used multivariate correspondence analysis (suitability) to identify the coexistence of selected categories of characteristics.
В статье были представлены результаты обследования, в котором главной целью было получить ответ на вопрос, в какой степени использование компьютера и Интернета поддерживает обучение в системе высшего образования. Обследование позволило также узнать состояние оборудования в области компьютерной техники среди студентов, узнать способы его использования, а также оценить знания в этой области. Опрос был проведен в апреле и мае 2015 г. среди студентов стационарной учебы самых больших высших школ в г. Щецин. В обследовании были использованы статистические методы, целью которых была характеристика распределений ответов и отношении между ними. Кроме того был использован многомерный анализ соответственности, необходимой для определения сосуществования отдельных категорий признаков.
Źródło:
Wiadomości Statystyczne. The Polish Statistician; 2016, 11; 73-90
0043-518X
Pojawia się w:
Wiadomości Statystyczne. The Polish Statistician
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie analizy korespondencji w badaniu aktywności turystycznej emerytów i rencistów
The application of the correspondence analysis in the study of tourist activity of pensioners and annuitants
Autorzy:
Bąk, Iwona
Powiązania:
https://bibliotekanauki.pl/articles/453385.pdf
Data publikacji:
2010
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
aktywność turystyczna
analiza korespondencji
metoda Warda
tourist activity
multiple correspondence analysis
Ward method
Opis:
Celem artykułu jest analiza aktywności turystycznej emerytów i rencistów zamieszkujących województwo zachodniopomorskie a w szczególności wykrycie powiązań pomiędzy zmiennymi charakteryzującymi ich wyjazdy turystyczne. Jako narzędzie badawcze wykorzystano wielowymiarową analizę korespondencji. Ze względu na dość dużą liczbę wariantów analizowanych zmiennych zastosowano metodę Warda, która umożliwiła wyznaczenie powiązań pomiędzy wariantami zmiennych.
The purpose of the article is an analysis of tourism activity and pensioners living in West County in particular, to detect relationships between variables characterizing their vacations. The study used a multidimensional analysis of the correspondence. Due to the relatively large number of variants of the analyzed variables using Ward method, which allowed setting the links between the variants of variables.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2010, 11, 2; 1-11
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie wybranych metod taksonomicznych i prospektywnych w polityce oraz strategicznym zarządzaniu publicznym
The use of selected taxonomic and foresight methods in policy making and strategic public management
Autorzy:
Baron, Marcin
Ochojski, Artur
Polko, Adam
Warzecha, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/593014.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Metoda delficka
Metoda k-średnich
Metoda warda
Prowadzenie polityki
Rozwój lokalny
Rozwój regionalny
Usługi publiczne
Zarządzanie strategiczne
Delphi method
K-means algorithm
Local development
Policy making
Public services
Regional development
Strategic management
Ward’s method
Opis:
W artykule prezentowane jest podejście metodyczne do prowadzenia kompleksowych analiz na potrzeby polityki i strategicznego zarządzania publicznego. Do identyfikacji podobnych regionów, pomiędzy którymi mogą wystąpić efekty uczenia się, zaproponowano metody taksonomiczne, natomiast metodę delficką wskazano jako odpowiednią dla lepszego zrozumienia przyszłości usług publicznych oraz zwiększenia zdolności adaptacyjnych na różnych poziomach sprawowania władzy. Metody zostały zilustrowane przykładami zastosowań, zaczerpniętymi z dorobku projektu ADAPT2DC („New innovative solutions to adapt governance and management of public infrastructures to demographic change”).
The paper aims at presenting method approach to complex analysis in support of policy making and strategic public management. Taxonomic methods are used to identify similar regions that can benefit of mutual learning and improve their performance in public service delivery. Delphi study is proposed to better understand public service futures and increase adaptation capacities on different levels of governance. The methods are illustrated with samples of ADAPT2DC project („New innovative solutions to adapt governance and management of public infrastructures to demographic change”) works and reflections concerning their application.
Źródło:
Studia Ekonomiczne; 2015, 233; 56-72
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
APPLYING THE WARD METHOD IN THE ANALYSIS OF FINANCIAL SITUATION OF COMMERCIAL BANKS (Ocena sytuacji finansowej banków komercyjnych z wykorzystaniem metody hierarchicznej Warda)
Autorzy:
Bieniasz, Anna
Majchrzak, Anna
Powiązania:
https://bibliotekanauki.pl/articles/599459.pdf
Data publikacji:
2011
Wydawca:
Wyższa Szkoła Informatyki i Zarządzania z siedzibą w Rzeszowie
Tematy:
COMMERCIAL BANKS
FINANCIAL SITUATION
WARD METHOD
Opis:
The article presents the evaluation of the financial situation of commercial banks in Poland. The ratio analysis shows that the biggest variations between analyzed units were in productivity of tangible fixed assets, share of non-performing loans and overall liquidity. The financial indicators constituted the basis for the process of grouping banks into clusters of similar financial standing. The use of Ward method enabled us to differentiate five clusters. The most profitable banks belong to the first cluster, while the most productive ones are from the fourth cluster. The third cluster comprises the banks with the relatively worst financial situation.
Źródło:
Finansowy Kwartalnik Internetowy e-Finanse; 2011, 7, 3; 1-13
1734-039X
Pojawia się w:
Finansowy Kwartalnik Internetowy e-Finanse
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Regionalne zróżnicowanie bilansu glebowej materii organicznej w województwie podkarpackim
Regional differentiation of the balance of soil organic matter in Podkarpackie province
Autorzy:
Buczek, J.
Bobrecka-Jamro, D.
Jarecka, A.
Powiązania:
https://bibliotekanauki.pl/articles/339222.pdf
Data publikacji:
2014
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
analiza skupień Warda
bilans glebowej materii organicznej
słoma
regionalne zróżnicowanie
województwo podkarpackie
balance
Podkarpackie Province
regional differentiation
soil organic matter
straw
Ward's cluster method
Opis:
Określono zmiany regionalnego zróżnicowania bilansu glebowej materii organicznej (MOG) na tle warunków siedliskowych i organizacyjno-ekonomicznych w województwie podkarpackim na przestrzeni lat 2002–2012. Podstawę analizy stanowiły dane Urzędu Statystycznego w Rzeszowie oraz informacje ze starostw powiatowych województwa podkarpackiego. Bilans materii organicznej gleby obliczono, wykorzystując współczynniki jej degradacji i reprodukcji. Uzyskane wyniki opracowano statystycznie, obliczając współczynniki trendu i zmienności oraz przeprowadzając analizę skupień Warda. Ogólny bilans glebowej materii organicznej w województwie podkarpackim w latach 2002–2012 był ujemny i wynosił średnio –0,19 t•ha-1, co powodowało konieczność przyorania słomy w ilości średnio 0,90 t s.m.•ha-1. Zmniejszenie obsady zwierząt z 0,44 DJP•ha-1 w 2002 r. do 0,26 DJP•ha-1 w 2012 r., dodatkowo ograniczyło dopływ do gleby materii organicznej z obornika. Spośród wydzielonych skupień najniższy stopień degradacji glebowej materii organicznej (–0,17 t•ha-1) oraz największą produkcję obornika – ponad 1,27 t s.m.•ha-1 – stwierdzono w powiatach położonych w środkowo-zachodniej części Podkarpacia. Powiaty należące do tego skupienia charakteryzują się największą w województwie obsadą zwierząt 0,51 DJP•ha-1i najniższą intensywnością organizacji produkcji roślinnej, wskutek ekstensywnej uprawy zbóż, zajmujących ponad 80% w strukturze zasiewów. Zdecydowanie ujemne wartości bilansu MOG (–0,45 t•ha-1) odnotowano w powiatach zlokalizowanych w środkowo-wschodniej części Podkarpacia. Duża intensywność organizacji produkcji roślinnej, głównie w powiatach łańcuckim, jarosławskim i przemyskim, z dominacją w strukturze zasiewów pszenicy ozimej, kukurydzy na ziarno oraz rzepaku ozimego, sprzyjała mineralizacji substancji organicznej i występowaniu ujemnego bilansu, dla zrównoważenia którego niezbędne było coroczne nawożenie słomą w ilości ponad 2,14 t•ha-1.
The aim of this study was to estimate changes in the regional differentiation of soil organic matter balance against a background of environmental, organizational and economic conditions in Podkarpackie Province. The analysis covered the years 2002–2012 and was based on data from Statistical Office in Rzeszów and from district authorities of Podkarpackie Province. The balance of soil organic matter was calculated using degradation and reproduction coefficients. The obtained results were subjected to statistical analysis, calculating trend and variability coefficients and using Ward’s cluster analysis. Total balance of soil organic matter in Podkarpackie Province in the years 2002–2012 was negative and amounted –0.19 t•ha-1 on average, which resulted in the necessity of ploughing straw in the average amount of 0.90 t DM•ha-1. Reducing livestock density from 0.44 in 2002 to 0.26 LU•ha-1 in 2012 additionally limited the supply of organic matter from farmyard manure to soil. From among the distinguished clusters, the lowest degree of degradation of soil organic matter (–0.17 t•ha-1) and the highest manure production of over 1.27 t DM•ha-1 was found in districts located in the central-western part of Podkarpacie. Localities belonging to this cluster were characterised by the highest animal stock of 0.51 LU•ha-1 and by the lowest intensity of organization of crop production as a result of extensive cultivation of cereals that covered more than 80% in the crop structure. Definitely negative values of soil organic matter balance (–0.45 t•ha-1) were recorded in districts located in the central-eastern part of Podkarpacie. High intensity of crop production organization, mainly in the Łańcut, Jarosław and Przemyśl districts, with predominance of winter wheat, maize for grain and winter oilseed rape in their structure of cropland, favoured mineralization of organic substance and the occurrence of negative balance, which requires annual fertilisation with straw in the amount of more than 2.14 t•ha-1 to achieve the balance.
Źródło:
Woda-Środowisko-Obszary Wiejskie; 2014, 14, 4; 17-26
1642-8145
Pojawia się w:
Woda-Środowisko-Obszary Wiejskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wielowymiarowa analiza porównawcza jako narzędzie oceny spółek deweloperskich notowanych na GPW
Multivariate comparative analysis as a toolto evaluate the development of companies listed on the Warsaw Stock Exchange
Autorzy:
Chrzanowska, Mariola
Zielińska-Sitkiewicz, Monika
Powiązania:
https://bibliotekanauki.pl/articles/425133.pdf
Data publikacji:
2013
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
Ward’s method
k-means method
Polish developer companies
Opis:
The diversity and multiplicity of information associated with investment in the stock market can cause problems with the proper understanding of the analyzed phenomena. In particular it refers to small investors who invest directly in stocks. Therefore, evaluating the financial condition of listed companies is very important, hence the need to use methods that will simplify and thus make stock market analysis easier. This paper presents an attempt to apply the selected financial ratios for the classification of 17 real estate companies listed on the Warsaw Stock Exchange into groups characterized by a similar economic condition. In the study multidimensional comparative analysis was used, i.e. Ward’s method and the method of k-means. The analysis was carried out in the period 2010-2012. In the experiment it was proved that using Ward’s method could identify companies with the weakest condition.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2013, 4(42); 60-71
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Position of Chosen European Union Countries in Respect of Financial Efficiency of Higher Education in the Area of Didactics
Klasyfikacja wybranych krajów Unii Europejskiej pod względem efektywności finansowej szkolnictwa wyższego w zakresie dydaktyki
Autorzy:
Ćwiąkała – Małys, Anna
Mościbrodzka, Monika
Powiązania:
https://bibliotekanauki.pl/articles/434989.pdf
Data publikacji:
2017-03-15
Wydawca:
Uniwersytet Opolski
Tematy:
financial efficiency
didactical process
non-parametric methods
Ward method
European Union higher education
efektywność finansowa
szkolnictwo wyższe
metody nieparametryczne
metoda Warda
Unia Europejska
Opis:
This article is continuation of the authors’ research on financial efficiency evaluation in higher education in the area of didactics in countries that belong to European Union. On the basis of the results of researches, in which a non-parametric approach was used, a classification of member countries into uniform groups has been conducted with reference to researched feature.
Artykuł ten jest kontynuacją badań autorek w tematyce oceny efektywności finansowej w szkolnictwie wyższym w zakresie dydaktyki w krajach, które należą do Unii Europejskiej. W artykule, na podstawie uzyskanych wyników podejścia nieparametrycznego metodą DEA, dokonano klasyfikacji krajów członkowskich w jednorodne grupy pod względem ich efektywności finansowej szkolnictwa wyższego w zakresie dydaktyki
Źródło:
Economic and Environmental Studies; 2017, 17, 41; 83-93
1642-2597
2081-8319
Pojawia się w:
Economic and Environmental Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Segmentacja facebookowiczów - ujęcie ilościowe
Segmentation of Facebook users – quantification
Autorzy:
Czerska, Iwona
Powiązania:
https://bibliotekanauki.pl/articles/419807.pdf
Data publikacji:
2015
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
segmentation
Facebook users
Ward’s method
k-means method
segments profiling
Opis:
The purpose of this study is the statistical analysis of results of the online survey in order to make market segmentation of Facebook users. Non-random sampling methods were used: convenience sampling and snowball sampling method. Because the sample was not representative, it did not give rise to statistical inferences about the population of Facebook users. The survey results were only part of the initial diagnosis, a description of the existing state of affairs. On the basis of selected market segmentation criteria and using the generalized k-means clustering algorithm and the Ward agglomeration method three clusters were formed: “Informed over-cautious persons” (56,31% of the sample), “Committed risktakers” (20,39% of the sample) and “Persistent assertive people” (23,30% of the sample). Segments were profiled on the basis of psychographic and behavioral criteria. The statistical significance of the relationship between clusters of Internet users and individual variables was confirmed by the chi-square test.
Źródło:
Nauki o Zarządzaniu; 2015, 3 (24); 33-40
2080-6000
Pojawia się w:
Nauki o Zarządzaniu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Classification of communes of the Małopolskie voivodeship as regards selected factors of local development
Klasyfikacja gmin Małopolski w zakresie wybranych czynników rozwoju lokalnego
Autorzy:
Dedio, K.
Powiązania:
https://bibliotekanauki.pl/articles/100276.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie
Tematy:
classification of communes
local development
Małopolskie voivodeship
Ward's method
multivariate object
study of communes
klasyfikacja gmin
rozwój lokalny
Małopolska
metoda Warda
obiekt wielocechowy
badanie gmin
Opis:
The study is an attempt at classification of 182 communes (gminy) of the Małopolskie voivodeship from the point of view of chosen factors influencing their local development. The adopted set of variables included 5 thematic categories: demography, economy, infrastructure, environmental management and land management. The scope of the variables is related to availability of statistical material. The data were acquired form public statistical sources – CSO (GUS) Local Data Bank for 2013–2014. The classification was carried out by Ward’s hierarchical clustering method. The analysis led to isolation of factors shaping local development of a group of communes. It was demonstrated that in prevailing part of the studied area one main factor determines local development of these communes, namely environmental management.
Przedmiotem podjętych badań była próba klasyfikacji 182 gmin woj. małopolskiego z punktu widzenia wybranych czynników kształtujących ich rozwój lokalny. Przyjęty do badania zestaw zmiennych obejmował 5 kategorii tematycznych: demografia, ekonomia, infrastruktura, gospodarka środowiskowa oraz gospodarka przestrzenna. Zakres przyjętych do badań zmiennych wynikał z dostępności materiału statystycznego. Powyższe dane pozyskano ze źródeł statystyki publicznej - Banku Danych Lokalnych GUS z lat 2013-2014. W celu przeprowadzenia klasyfikacji posłużono się metodą Warda. W wyniku przeprowadzonych analiz wyodrębniono jednorodne pod względem czynników kształtujących rozwój lokalny grupy gmin. Stwierdzono, że na badanym obszarze występują w przeważającej części gminy, których głównym czynnikiem determinującym ich rozwój lokalny jest gospodarka środowiskowa.
Źródło:
Geomatics, Landmanagement and Landscape; 2016, 4; 7-24
2300-1496
Pojawia się w:
Geomatics, Landmanagement and Landscape
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of changes in the labour markets of post-communist countries with other EU member states
Autorzy:
Dmytrów, Krzysztof
Bieszk-Stolorz, Beata
Powiązania:
https://bibliotekanauki.pl/articles/22444312.pdf
Data publikacji:
2021
Wydawca:
Instytut Badań Gospodarczych
Tematy:
European labour market
linear ordering
Dynamic Time Warping
Ward’s method
cluster analysis
Opis:
Since 2004, 11 post-communist countries joined the EU. It has helped to strengthen their international competitiveness. This was linked to the implementation of institutional and economic reforms, significant technological changes and improvements in the quality of human capital, as well as fiscal stabilisation policies. These changes affected their situation in the labour market. Purpose of the article: The aim of the study is to assess changes in the situation in the labour market in the EU with particular emphasis on the post-communist countries in the period 2002? 2019. Methods: The situation of countries in the European labour market was estimated using the TOPSIS method. A similarity matrix of changes in the composite variable for each country was then constructed using the Dynamic Time Warping method. On its basis, homogeneous clusters of countries were determined using the Ward's method. Findings & value added: Four homogenous clusters of countries were formed. The post-communist ones belonged to two groups. In one, there were two countries ? Croatia and Slovakia. The rest of the post-communist countries were in a large cluster, which also included Germany, Malta, Finland, Portugal, France and Belgium. Changes of the situation in the post-communist countries in this group improved very much during the analysed period (this was particularly evident for Czechia, Estonia and Poland). It is interesting to investigate whether the reaction of labour markets to changes in the global economic situation in post-communist countries is similar to that in the old EU countries. The similarity of changes can be measured using the DTW method. There is an empirical research gap in this respect. Therefore, the added value is the use of this method in assessing similarities of changes in the labour market situation in post-communist countries in comparison to the Western European ones.
Źródło:
Equilibrium. Quarterly Journal of Economics and Economic Policy; 2021, 16, 4; 741-764
1689-765X
2353-3293
Pojawia się w:
Equilibrium. Quarterly Journal of Economics and Economic Policy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Generacja Baby Boomers na rynku bankowości internetowej w Europie
Baby Boom generation in the online banking market in Europe
Autorzy:
Kaczmarek, Mirosława
Powiązania:
https://bibliotekanauki.pl/articles/962783.pdf
Data publikacji:
2019
Wydawca:
Główny Urząd Statystyczny
Tematy:
bankowość internetowa
Baby Boomers
analiza skupień
metoda Warda
internet banking
baby boomers
cluster analysis
the ward method
Opis:
Generacja Baby Boomers (BB), czyli osób urodzonych pomiędzy 1944 a 1963 r., obejmuje ponad 1/5 ogółu mieszkańców Europy, co czyni ją znaczącym segmentem konsumentów. Ważną cechą tej generacji jest wysokie zaufanie do systemu bankowego, które stanowi jeden z warunków adaptacji zmian technologicznych zachodzących w obszarze dystrybucji usług bankowych, w tym akceptacji bankowości internetowej (BI). W 2018 r. w Europie z BI korzystało średnio 37,1% osób z generacji BB, co pokazuje, że ten kanał dystrybucji ma nadal duże możliwości rozwoju. Poszczególne kraje europejskie wyraźnie różnią się zakresem wykorzystania internetu w realizacji usług bankowych przez osoby w wieku od 55 do 74 lat. Celem badania jest określenie struktury rynku BI w generacji BB pod względem cech społeczno-demograficznych (wykształcenia i płci). Wykorzystano dane Eurostatu za 2018 r. Analizy struktury rynku BI dokonano pod względem płci i wykształcenia użytkowników, stosując jedną z metod analizy skupień – metodę Warda. Przeprowadzona analiza wykazała, że w pokoleniu BB liderami w BI są kraje nordyckie i Holandia, natomiast najmniejszy odsetek jej użytkowników znajduje się w krajach bałkańskich i południowej Europy, m.in. w Turcji i we Włoszech. Spośród analizowanych cech społeczno-demograficznych wykształcenie różnicuje wyodrębnione grupy krajów silniej niż płeć.
The Baby Boom generation, i.e. persons born between 1944 and 1963, constitutes over one fifth of the total European population, which makes it a significant segment of consumers. The important feature of this generation is their high trust in the banking system, which is one of the conditions for adapting technological changes in the area of banking service distribution, including the acceptance of the internet banking (IB). In 2018, the average of 37.1% Baby Boomers used IB, which demonstrates that this distribution channel still has a large potential for development. There are distinct differences among European states regarding the scope of the internet usage for banking services by persons aged 55–74. The aim of this study is to define the structure of IB market for the European Baby Boom generation according to social and demographical characteristics (education and gender). The study is based on Eurostat’s corresponding data for 2018. The analysis of the structure of the IB market has been based on the gender and the level of education of its users, adopting one of the methods of cluster analysis, the Ward method. The analysis demonstrates that Nordic countries and the Netherlands are the European leaders in terms of IB usage among Baby Boomers, whereas the lowest percentage of IB usage among Baby Boomers has been observed in the Balkan and Southern European countries, e.g. Turkey and Italy. Among the analysed social and demographic characteristics, education differentiates the selected groups of states to a larger extent than gender.
Źródło:
Wiadomości Statystyczne. The Polish Statistician; 2019, 64, 8; 5-18
0043-518X
Pojawia się w:
Wiadomości Statystyczne. The Polish Statistician
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena poziomu zagrożenia terroryzmem w krajach Unii Europejskiej z wykorzystaniem GTI
Assessment of the terrorism threat level in European Union countries using the GTI index
Autorzy:
Kądziołka, Kinga
Powiązania:
https://bibliotekanauki.pl/articles/646240.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
terroryzm
GTI
metoda Warda
Unia Europejska
terrorism
Global Terrorism Index
Ward’s method
European Union
Opis:
The purpose of the article is to present the method of constructing the GTI index used for a multidimensional assessment of a terrorist threat. Next, using Ward’s method, groups of EU countries similar in terms of the terrorism threat level will be identified. Particular attention was paid to the position of Poland, which due to its active participation in military operations in Afghanistan and Iraq, may be the target of a terrorist attack. The analyses show that Poland is in the group of countries with the lowest terrorism threat level. However, this threat cannot be underestimated.
Celem artykułu była prezentacja sposobu konstruowania miernika GTI wykorzystywanego do wielowymiarowej oceny zagrożenia terroryzmem. Następnie przy użyciu metody Warda zidentyfikowano grupę krajów UE podobnych pod względem zagrożenia terroryzmem. Szczególną uwagę zwrócono na pozycję Polski, która z powodu aktywnego udziału w działaniach militarnych w Afganistanie i Iraku czy rozmieszczenia wojsk amerykańskich może być celem ataku terrorystycznego. Z przeprowadzonych analiz wynika, że Polska znajduje się w grupie krajów o najmniejszym zagrożeniu terroryzmem, jednak zagrożenia tego nie można lekceważyć.
Źródło:
Ekonomia Międzynarodowa; 2018, 23
2082-4440
2300-6005
Pojawia się w:
Ekonomia Międzynarodowa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Propozycja metody wspomagającej wybór miernika taksonomicznego na przykładzie oceny atrakcyjności giełd kryptowalut
A proposal of the method supporting the selection of a composite indicator on the example of the assessment of attractiveness of cryptocurrency exchanges
Autorzy:
Kądziołka, Kinga
Powiązania:
https://bibliotekanauki.pl/articles/2098010.pdf
Data publikacji:
2021-05-06
Wydawca:
Zachodniopomorska Szkoła Biznesu w Szczecinie
Tematy:
wybór metody porządkowania liniowego
giełdy kryptowalut
miernik taksonomiczny
grupowanie hierarchiczne
metoda Warda
metoda k-średnich
porządkowanie liniowe
linear ordering
cryptocurrency exchanges
taxonomic measure
composite indicator
hierarchical clustering
Ward’s method
k-means
Opis:
W niniejszej pracy zaproponowano metodę wyboru miernika taksonomicznego spośród wielu mierników opisujących analizowane zjawisko. W pracach dotyczących zastosowania mierników taksonomicznych często prezentowane są rankingi uzyskane za pomocą kilku różnych mierników. Ocena zgodności rankingów dokonywana jest m. in. za pomocą współczynników korelacji Spearmana, natomiast kwestia wyboru finalnego reprezentanta (miernika taksonomicznego i rankingu obiektów uzyskanego na podstawie jego wartości) jest zazwyczaj pomijana. Zaproponowana metoda wyboru finalnego miernika taksonomicznego uwzględnia zarówno stopień podobieństwa rankingu uzyskanego na podstawie wartości tego miernika do innych rankingów jak również zdolność miernika do grupowania obiektów. Ponadto wykorzystano grupowanie hierarchiczne połączone z metodą k-średnich do identyfikacji podzbiorów obiektów (tu: giełd walut kryptograficznych) podobnych pod względem wartości miernika taksonomicznego. Grupowanie hierarchiczne umożliwia podział obiektów na taką liczbę grup, jaka wyraźnie uwidoczni się na uzyskanym dendrogramie, zamiast popularnego w literaturze przedmiotu, „sztywnego” podziału na cztery grupy wg średniej i odchylenia standardowego wartości miernika (który nie zawsze jest optymalny). W analizowanym przykładzie metoda Warda została zastosowana do wyznaczenia początkowej liczby i środków (centroidów) grup, wykorzystanych następnie w metodzie k-średnich. Wykorzystanie dodatkowo metody k-średnich umożliwiło poprawę jakości grupowania w porównaniu z użyciem tylko metody Warda.
The aim of work is to propose a method for selection the final taxonomic measure from many its variants accepted by the researcher. The idea of the method is to choose the representative in such a way that the ranking obtained by the use of the taxonomic measure is strong similar to other rankings. The proposed method takes into account both similarity of rankings and the discrimination ability of the taxonomic measure. There was also proposed to use combined Ward’s method with k-means algorithm to identify groups of cryptocurrency exchanges with similar level of the taxonomic measure. The hybrid clustering method allowed to obtain higher clustering quality than Ward’s method.
Źródło:
Zeszyty Naukowe ZPSB Firma i Rynek; 2021, 1(59); 65-76
2657-3245
Pojawia się w:
Zeszyty Naukowe ZPSB Firma i Rynek
Dostawca treści:
Biblioteka Nauki
Artykuł

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