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7622. Ekonomické aspekty třískového obrábění

Creator:
Zeman, Pavel
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
precision mechanics, přesná mechanika, obrábění, výrobní náklady, and optimální řezné podmínky
Language:
Czech
Description:
Besides its occupation with basic research the VCSVTT is also engaged in cooperation with industrial companies. Cutting operation team in VCSVTT occupies itself the most often with problems in connection with recommendation of cutting technologies and processes, choice or testing of cutting tools, measurement of the workpiece quality, analysis of energy intensity of cutting process or choice of optimal cutting conditions with the aim to minimize production costs or maximize production productivity. The most recent cooperation of VCSVTT and SHM focused on questions about the possibility of reducing production costs at cutting. and Výzkumné centrum pro strojírenskou výrobní techniku a technologii (VCSVTT) se, kromě řešení témat základního výzkumu, zabývá také spoluprací s průmyslovými podniky. Skupina třískového obrábění ve VCSVTT přitom řeší nejčastěji problematiku spojenou s návrhy obráběcích technologií a postupů, volbou či testováním řezných nástrojů, měřením kvality obrobku, rozborem energetické náročnosti řezného procesu nebo volbou optimálních řezných podmínek s cílem minimalizovat výrobní náklady, či maximalizovat produktivitu výroby. V rámci nedávné spolupráce Výzkumného centra a firmy SHM, s. r. o. byla řešena problematika možnosti snižování výrobních nákladů při obrábění.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

7623. Ekonomické možnosti obnovitelných zdrojů energie

Creator:
Fiedler, Jan
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
energetická politika, energie a životní prostředí, obnovitelné zdroje energie, energy policy, energy and environment, and renewable power sources
Language:
Czech
Description:
Příspěvek vyhodnocuje ekonomické možnosti obnovitelných zdrojů energie ve srovnání s fosilními a jadernými palivy. Porovnává strukturu spotřeby primárních energetických zdrojů ve světovém měřítku a v ČR. V tabulkové formě uvádí výrobní a měrné investiční náklady pro vybrané technologie, specifikuje podmínky uplatnění obnovitelných zdrojů v konkurenci fosilních a jaderných paliv. V závěru si všímá výhledu možností využití obnovitelných zdrojů energie v ČR. and Jan Fiedler.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

7624. Ekonomie hlavního proudu je bariérou pro genderovou rovnost: rozhovor Zuzany Uhde a Aleny Křížkové s Ewou Rumińskou-Zimny

Creator:
Rumińska-Zimny, Ewa, Zuzana Uhde, and Alena Křížková
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
sociologie, gender, 18, and 316
Language:
Czech
Description:
Ewa Rumińska-Zimny přednáší genderová studia na Polské akademii věd a je prezidentkou Mezinárodního fóra pro ženy v akademii a obchodu na Varšavské vysoké škole ekonomické. Akademickou práci spojuje s prací pro Organizaci spojených národů. Autorsky a editorsky se podílela na přípravě řady zpráv OSN, například Zpráv o lidském rozvoji, a v Evropské hospodářské komisi OSN v Ženevě spolupracovala na hodnocení závazků přijatých na Konferenci OSN o ženách v Pekingu. Odborně se zabývá procesy tranzice ve východní a střední Evropě, feministickou ekonomií a genderovou rovností. Je členkou Mezinárodní asociace feministických ekonomů a ekonomek (IAFFE) a spoluzakladatelkou GEM-Europe, který je součástí globální vědecké sítě Gender a makroekonomika., Dr. Ewa Rumińska-Zimny is a lecturer in Gender Studies at the Polish Academy of Science and the President of the International Forum of Women in Academia and Business at the Warsaw School of Economics. She combined academic work with work for the United Nations. Her work included writing and coordination of UN reports, e.g., Human Development Reports, analyses of the transition process in Eastern and Central Europe and reviews of progress in gender equality within the framework of the Beijing process at the UN Economic Commission for Europe in Geneva. She is a member of the International Association of Feminist Economists (IAFFE) and the initiator of GEM Europe, a part of the global network of researchers on Gender and Macroeconomics., Ewa Rumińska-Zimny, Zuzana Uhde, Alena Křížková., and Obsahuje seznam literatury
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

7626. Ekosocializmus

Creator:
Gažo, Patrik
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
ecosocialism, ecological Marxism, eco-anarchism, social ecology, degrowth, environmentalism, social-ecological transformation, social movements, non-human nature, and political strategy
Language:
Czech
Description:
This paper contributes to Contradictions’ “Conceptual Dictionary” by exploring the history, theory, and practical implications of the notion of “ecosocialism”. The first part of the text follows the historical and ideological development of ecosocialism and examines its broad and diverse anarchist, feminist, and Marxist roots. This part of the text also introduces key authors of ecosocialism and their work. The subsequent part identifies critical ideas and offers a theoretical overview of scholarly and political debates about the relationship between ecosocialism and other environmental and socio-critical approaches. Finally, the text further explores the practical and political vision of the concept and reflects on the future of ecosocialist strategy.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

7627. Ekvivalence a blokové modelování v analýze sociálních sítí

Creator:
Diviák, Tomáš
Format:
print, bez média, and svazek
Type:
article, články, journal articles, model:article, and TEXT
Subject:
Sociální interakce. Sociální komunikace, sociální interakce, shluková analýza, social interaction, cluster analysis, social network analysis, blockmodeling, relational data, 18, and 316.4/.7
Language:
Czech
Description:
The paper presents to Czech social scientists an introductory review of the concept of equivalence and the method of blockmodeling in social network analysis (SNA). After introducing the central concepts of SNA such as node and tie, along with their basic metrics such as centrality and cohesion, I present the concepts of role and position. These are treated by SNA as clusters of nodes with similar ties, something I juxtapose to algorithms to identify cohesive subgroups of nodes. Subsequently, I define and compare the two most frequently applied types of equivalence - structural, which is strict but broadly applicable, and regular, which is more liberal but has limited uses. Structural equivalence builds on a strict definition of similarity of ties, treating as equivalent only such nodes that have the same ties to the same other nodes. Regular equivalence works with looser criteria and better corresponds with both the theoretical and the intuitive notions of role; this, however, is outweighed by the absence of a unique regular-equivalent solution within a network and by the difficulty to process networks with undirected ties. Regular-equivalent nodes are such that have ties to other mutually equivalent nodes. I present examples to demonstrate the differences between both definitions. In the following section, I discuss measurement of similarity between the different nodes’ profiles of ties (e.g., correlation and Euclidean distance) and possible uses of the standard statistical methods of cluster analysis and multidimensional scaling to detect equivalent classes of nodes within networks. After pointing to the weaknesses of these techniques in network data analysis, I present blockmodeling as a method designed specifically to identify roles and positions within networks. Ischematize the blockmodeling procedure and present its basic terms before comparing classic inductive blockmodeling, which is primarily fit for the purposes of exploration and network reduction, with deductive generalized blockmodeling, which is applicable in testing hypotheses about basic structural characteristics of a network. I bring attention to the strengths and weaknesses of both approaches. Relatedly, I present an application of blockmodeling especially for the purposes of simplified network representation, comparing structural patterns across networks, and testing structural theories. In the following section, I demonstrate specific blockmodeling algorithms based on both structural equivalence (CONCOR and Tabu Search optimization) and regular equivalence (REGE and Tabu Search optimization). Then I verify the adequacy of their resulting assignment of positions to nodes using eta coefficient, Q modularity and correlation of the ideal blocked and the empirical adjacency matrices. In the concluding section, I demonstrate the entire blockmodeling procedure on an empirical case of a small network with undirected ties using the UCINET software tool, including interpretation of results. Finally, I reflect the contemporary position of blockmodeling among leading research approaches in SNA, referring to other empirically oriented studies that demonstrate the broad applicability and utility of position analysis., Tomáš Diviák., and Obsahuje použitou literaturu a poznámky
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

7629. Elastoplastic reaction of a container to water freezing

Creator:
Krejčí, Pavel
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
phase transition, water, ice, energy, entropy, and elastoplastic boundary
Language:
English
Description:
The paper deals with a model for water freezing in a deformable elastoplastic container. The mathematical problem consists of a system of one parabolic equation for temperature, one integrodifferential equation with a hysteresis operator for local volume increment, and one differential inclusion for the water content. The problem is shown to admit a unique global uniformly bounded weak solution.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

7630. Electoral competition with rationally inattentive voters

Creator:
Matějka, Filip and Tabellini, Guido
Publisher:
CERGE-EI
Format:
electronic, bez média, svazek, and 50 stran : ilustrace.
Type:
model:monograph and TEXT
Subject:
Volby, volební kampaně, referenda, volební chování, modelování a simulace, electoral behavior, modeling and simulation, 324:316.62, 303.094.7, (048.8), 15, and 324
Language:
English and Czech
Description:
Filip Matějka, Guido Tabellini., Obsahuje bibliografii a bibliografické odkazy, and České a anglické resumé
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

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