The article examines ideological and institutional role of the “greening” policy in the Soviet urban planning practice of 1920-1930s. Relying on the example of the socialist city of Uralmash in Yekaterinburg (Sverdlovsk) the author traces how the idea of the “green city” affected the development of the urban settlement in terms of its functional mechanism and symbolic transformation. By analyzing the logic of the Uralmash “green” policy and its main narratives he argues that successful improvement of the post-Soviet green zones depends not so much on the new urban city-planning initiatives as on the new symbols and meanings that could give a clear vision of these spaces in the current social and cultural context.
This paper provides an overview of developments affecting Slovenian social housing after the country’s transition to a market economy. It analyses the Slovenian institutional framework, its functioning and critically evaluates its sustainability. The economic and social impacts of the global financial crisis saw the sector face strong challenges and revealed its weaknesses. A new strategic document was adopted in 2015 to respond to the situation. Although this new document offers a transition to the more sustainable and better provision of social housing in practice, it is still too early for optimism since it would not be the first time in Slovenia that a strategic document has primarily remained only on the declaratory level.
The revival of the UN Security Council’s regulatory powers after the end of the Cold War as well as new challenges to international peace and security have led to the development and diversification of UN operational tools. In the absence of United Nations’ own material capacities to undertake necessary military action, due to the non-conclusion of agreements provided for in Article 43 of the UN Charter by which UN Member States would commit to provide the necessary force and other assistance to the Security Council upon its call, the latter developed other means. Today, there co-exist two mandated operations by the Security Council vested with the power to use force, each however within a different scope, limits and objective: UN-led “Blue Helmets” and UN-authorized military operations. This functional rapprochement causes nevertheless a great confusion, both in practice and recently in the judicial sphere. Hence, the clarification of the legal regime of each is essential. While the UN-led Blue Helmets vested with the limited power to use force represent the new generation of peacekeeping operations, the UN-authorized operations constitute a decentralized execution of the Council’s enforcement measure. In the latter case the Security Council turns to UN Member States or regional organizations and delegates them its exclusive power to use force under Article 42 of the UN Charter to execute it under set conditions. The limitation of the use of force by the UN-led operation to the strict defence of its civilian mandate does not exempt it from the regime of coercion established under Chapter VII of the UN Charter either. This raises a question of the legal status of this UN-led operation and whether possibly such tool approaches the original concept of UN enforcement forces laid down in Article 43. Analysis of the converging and diverging elements of both operations shows the complexity of this operational domain, the clarification of which is proposed in this article via a legal perspective.
The article deals with the regulation of the use of Czech, German and classical languages in the administrative, school and Church spheres as it appears in the decrees published during Joseph II’s reign for the lands of the Bohemian crown. The author attempts to reconstruct the emperor’s vision of the usage of the different languages in the Czech lands, find the reasoning behind it, and identify the methods of this regulation. He also asks whether, in Joseph II’s case, one can speak about a "language policy" as a deliberate strategy to change the language situation in the Czech lands., Dmitrij Timofejev., and Obsahuje bibliografické odkazy
Egypt is considered to be one of the few countries in which Arab culture flourished among the Jews, in both the popular and the canonical fields. Some of Jews, such as Yacqūb Ṣanūc (James Sanua) (1839-1912), Togo Mizraḥī (1901-1987), and Laylā Murād (1918-1995), rose to prominence. However, on the whole, Jewish involvement was relatively limited in comparison to Iraq, probably because Arabic had low status among Egyptian Jews. A Jew as “a carbon copy of ibn al-balad” was never a desired option for most of the Egyptian-Jewish writers, artists, and intellectuals. Due to the peculiar demographic structure of Egyptian Jewry, the dreams of its members were much more infused with the spirit of Alexandrian cosmopolitanism, which was the product of a limited period and singular history – that of the crumbling Ottoman Empire.
The 48-hour "Aladin" forecast model can predict significant meteorological quantities in a middle scale area. Neural networks could try to replace some statistical techniques designed to adapt a global meteorological numerical forecast model for local conditions, described with real data surface observations. They succeed commonly a cut above problem solutions with a predefined testing data set, which provides bearing inputs for a trained model. Time-series predictions of the very complex and dynamic weather system are sophisticated and not any time faithful using simple neural network models entered only some few variables of their own next-time step estimations. Predicted values of a global meteorological forecast might instead enter a neural network locally trained model, for refine it. Differential polynomial neural network is a new neural network type developed by the author; it constructs and substitutes for an unknown general sum partial differential equation of a system description, with a total sum of fractional polynomial derivative terms. This type of non-linear regression is based on trained generalized data relations, decomposed into many partial derivative specifications. The characteristics of composite differential equation solutions of this indirect type of a function description can facilitate a much greater variety of model forms than is allowed using standard soft-computing methods. This adjective derivative model type is supposed to be able to solve much more complex problems than is usual using standard neural network techniques.
In the wake of the national and political conflict in the Middle East, Arab-Jewish culture has undergone a process of marginalization and negligence, as well as a gradual descent into utter oblivion, owing to both Arab-Musim and Hebrew-Jewish-Zionist national and culural systems. Both sides, each with its own form of limited reasoning and particularistic considerations, have refused to accept the legitimacy of Arab-Jewish hybridism highlighting instead "pure" nationally, culturally, and religiously exclusive identities. The article explores the gradual demise of Arab-Jewish cultural hybridism, which, from a historical point of view, coexisted with Arab-Muslim and Arab-Christian hybridisms during some periods. Following a short era in the twentieth century during which Arab-Jewish culture flourished, especially in Egypt and Iraq, we are currently witnessing the demise of that culture. Consequently, Israeli-Arab Jews, or those seen as their offspring, currently have, or will have in the near future, three man cultural options. The first - the revival of active Jewish involvement in Arab canonical culture - is probably impossible. The second option is involvement in popular Israeli culture; this option is characterized by a strong longing for legitimacy - Jewish musicians and singers of Arab origin have accomplished a great deal in this field. The third option is participation in the activities of the canonical Hebrew culture.
The author examines the clientele of the Bratislava booksellers Anton Löwe and Philip Ulrich Mahler in the context of the Hungarian book trade from 1770 to 1800. By analysing the extant correspondence of Michal Institoris Mošovský, a protestant pastor in Bratislava, she was able to partially identify one segment of their customer base - protestant clergymen. For many years these members of the petty intelligentsia purchased from the Bratislava booksellers, in particular imported works by the German pietists and Enlightenment theologians. The author also investigated the social and geographical limits of the distribution process, some of the contact and distribution networks, and the identity of key figures., Petronela Križanová., and Obsahuje bibliografické odkazy
This study examines how South Africans construct and negotiate racial identities in written commentaries via a forum of the Mail@Guardian website Thought Leader in response to a blog by Ndumiso Ngcobo entitled “I’m a coconut and I am proud of it – say it with me.” Ngcobo’s ironic opinion piece, written in 2008, which plays with the label “coconut” (frequently employed in South Africa among “black” people in reference to another “black” person who seemingly behaves “white”), triggered 163 responses from individual readers. An essential point made by Ngcobo is that perceptions and attitudes around “whiteness” and “blackness,” or what can be considered “white” or “black” in racial terms, vary greatly, depending on circumstances and perspective. However, the author’s irreverent and ironic style is misunderstood and misinterpreted by many of the comment writers. Relying partially on the methodological framework of Critical Discourse Analysis, I analyze the commentary texts and interpret the categories people use in their discursive constructions of race and identity by examining their stylistic choices and content markers and focusing on sociolinguistic and cultural issues. It is argued that the analyzed comments are representative not only of the pervasiveness of “rigid” race thinking but also of how intra-racial boundaries are constructed in the post-apartheid state.
The sequence diversity in the mitochondrial cytochrome-c oxidase I (COI) gene was evaluated as a tool for resolving differences among species of European adelgids collected from several localities across the Czech Republic. Members of 7 genera and 16 species were examined, and as outgroups, two species of Phylloxeridae were used. Sequence divergences within species were on average less than 0.15%, whereas divergences between species ranged from 0.0 to 4.12% for congeneric and to 13.24% for intergeneric comparisons. It is concluded that DNA barcoding of Adelgidae is a powerful tool for identifying genera, but at the species level it works only in those cases where there are no species complexes. Nevertheless, it can be used as a complement to traditional, morphological taxonomy.
This study examines the possibilities and limitations of centralizing reforms within the western part of the Habsburg monarchy, as illustrated by the problematic issue of ennoblement in the Czech lands. The administrative reforms of 1749 resulted in the administrative union of both state entities in a single whole of (all) so-called Hereditary Lands. They also led to the closure of separate offices at court representing the Czech and Austrian lands, replacing them with a single Directorium in publicis et cameralibus, which took over the ennoblement programme hitherto operated by those two offices. Despite the apparently centralizing tendency of the reforms, this did not extend to any unification of entitlements to ennoblement, which continued to be based on particular ranks and titles specific to either the Kingdom of Bohemia or the Archduchy of Austria. It was not until 1752 that, on the urging of Maria Theresa herself, a unified, legally binding system for dispensing preferment and privilege, including a unified scale of aristocratic titles for all the Hereditary Lands, was introduced. In practice, ennoblement rights in the two state entities remained differentiated as to specific titles up until the early 19th century, when the two systems were superseded by a new Austrian Imperial ranking. Thus one of the last relics of the conception of the Czech Crown Lands as an autonomous historical entity finally ceased to exist., Jiří Brňovják., and Obsahuje bibliografické odkazy
The concept of "Exclusivism" is considered to represent one of the most characteristic features of International Nuclear Law. This concept is reflected by regulating matters of uses of nuclear energy and ionising radiation exclusively by distinct principles, that govern legal relations arising in these matters. The concept of "Exclusivism" has been widely reflected in the provisions of international conventions, which have been adopted since the 1960s. This article aims to revisit this concept, taking the most recent developments in international and European law into regard. The article is dealing with the reasons and origins of the concept of "Exclusivism" in International Nuclear Law, with reflections of this concept in existing international treaties and at last but not at least, with most recent tendencies, that aim at jeopardising this concept., Jakub Handrlica., and Obsahuje bibliografické odkazy
From the 1780s on, the court of the Princes of Schwarzenberg generally maintained four or five personal doctors. These privileged positions were frequently held by individuals who also practised as municipal or county physicians. In their castles in Bohemia the Schwarzenbergs also employed surgeons and apothecaries, and in line with the professionalization of medical care during the Enlightenment they attached great importance to the training of health workers. In the first three decades of the 19th century health care in the context of the Schwarzenberg primogeniture became even more specialized and the number of medical staff on the various Schwarzenberg estates increased. In addition to their own physicians, the Schwarzenbergs also entrusted their health needs to eminent medical experts drawn primarily from the Habsburg court and the University of Vienna and later, from the 1830s on, to many doctors working in the Czech Lands. This study considers the relationship between the high nobility as representatives of social elites on the one hand and the Enlightenment medicalization of society with its professionalization of health care on the other. It maps the structure of medical care within one aristocratic family and their estates and its transformation over a fifty‐year period. It also attempts to discover who the Schwarzenbergs’ doctors were and what socio‐cultural background they came from., Václav Grubhoffer., and Obsahuje bibliografické odkazy
This paper uses a corpus of 14 hours of recorded interactions to analyze the “normative” and “strategic” honorifics usage of speakers of Korean as a second language. I define “normative” honorifics as usage that reflects recognized “power”, “distance” and “formality” factors. “Strategic” honorifics usage breaks from these norms, is pragmatically “marked” and is motivated by interactional goals. Previous studies into the honorifics usage of speakers of Korean as a second language focus on analysis of “errors” judged against prescriptive norms. However, the current paper adopts an interactional socio-pragmatic perspective and looks at the ideology and specific intentions that underlie second language usage. According to my data, in comparison with native interaction, second language speaker discourse displays less variation according to normative factors but may show more marked strategic alterations. Regarding normative usage, speakers prefer to establish equal relationships and minimize “power” differences. As for strategic use, speakers may alternate honorific levels according to the sensitivity of the situation or the illocutionary force of particular utterances. I explain these differences with reference to conflicting ideologies as to language usage between Korean and “Western” cultures, prevalent during the interview process. I conclude the paper by discussing the implications for Korean applied linguistics.
Historically, the main focus of the study of housing in advanced economies has been on houses that meet the accommodation needs of households: houses as the main residence of families. In recent decades there has been the growth in the numbers of houses used for purposes other than as a main residence, for example in the forms of the recent global spread of Airbnb and of foreign engagement in housing as an investment tool; alongside a set of ‘for housing’ houses (FHH) another, overlapping, set of ‘not for housing’ houses (NFHH) is emerging. The present paper begins by identifying four types of NFHH, and considers the significance of their growth. It argues that while the NFHH sector is relatively small it has large impacts, and these are such that they challenge housing researchers and policy makers to develop additional ways of looking at housing systems.
The cuticular structure of juveniles of several oribatids of different families with wrinkled cuticles were compared: Hermannia gibba, Tectocepheus velatus, Scutovertex minutus, Achipteria coleoptrata and Eupelops occultus. Both the surface and internal structures of the "plissée" were studied. Light microscopy revealed several patterns in mites studied with Masson's triple stain and these results were supported by TEM. Although the "plissée" looks similar at the body surface, the structure and ultrastructure differ among groups. Some types of wrinkling is supported by small muscles, probably for changing body shape. Differences in the structure of the cuticle of the prosoma and opisthosoma were observed. The differences in the wrinkling in the cuticle in diferent lines is associated with change in the body shape in response to different moisture conditions.
This article examines the administration of rescue operations to save people from drowning and the distribution of rewards to rescuers in Bohemia during the 1780s and 1790s. Based on documented interrogations and official records, the article looks at the investigatory process, the conditions rescuers had to fulfil in order to apply for a reward from the Bohemian Gubernium, and the role of other actors in this process, such as witnesses and doctors. The study departs from the concept of biopolitics developed by French philosopher Michel Foucault and shows how the state authorities tried to foster mutual solidarity among town dwellers. While Enlightenment thinkers continued to stress the role of "love for human beings" (Menschenliebe), i.e. universal interpersonal solidarity, the elites held the view that the biggest motivation for anyone to save a person from drowning was monetary reward. The aim of the enlighteners, however, was to encourage people to embrace the ideal of "Menschenliebe" and to fully identify with it - hence their emphasis on cases of selfless acts, especially in newspapers and popular literature. Besides that, the article analyses the trend towards the medicalization of society in the Enlightenment period and changes in attitudes to death., Ondřej Hudeček., and Obsahuje bibliografické odkazy
The purpose of this paper is to examine the image of the city as represented and conceptualized in the works of prominent modern Arab poets, mainly since the 1950s. In this article, I will argue that the attitude of these modernists toward the city is characterized by a unique ambivalence. On the one hand, many of them (particularly those who migrated from provincial towns and rural areas to a capital city) unequivocally depict the city or metropolis as a harsh and cruel prison. On the other hand, these same poets recognize the immeasurable possibilites and the immense cultural space the big city offers its inhabitants, especially its poets and artists. Accordingly, a more incisive reading of their works reveals that modern Arab poets are also enthralled and captivated by the modern city. They feel that they have to put up with the metropolis, awe inspiring as it may be, distant from the "firsts sky" as it may be, because it allows them to confront paradox and incongruity, thus eliciting creativity. Therefore, as far as most Arab modernist poets are concerned, having been uprooted from their home village has put them face to face with "the other". In their eyes, it is exactly this challenge to their comfortable and somewhat stolid existence that propels them to the forefront of artistic creation.
The Black Death plague constituted a major disruption of the ordinary pace of life of the society in early modern period. As such it attracted interest and drew attention. The Black Death menace caused panic and fear, and therefore various measures and actions which were supposed to prevent the outbreak of the plague or at least considerably limit its consequences were defined and carried out. Such practices were shaped by contemporary ideologies and mentalities and reflected everyday experience. The study of various means of dealing with the Black Death menace may be like looking in a mirror in which the curves of the quotidian lifestyle of the period are reflected. The present paper which analyses the last Black Death plague of 1713-1714 in the environment of a southBohemian town offers one such view. The mechanisms which the inhabitants of the regional capital Písek formulated and applied in the attempt to confront the iimpending Black Death menace, are specifically examined. The bearing of these mechanisms on contemporary devoutness is also problematized at the level of socalled semifolk discourse., Zdeněk Duda., and Obsahuje bibliografické odkazy
The article presents a survey of the so-called noun-verb transitions – which are traditionally labeled as huóyòng or “live usage” – in the Shījīng, and touches upon the more general issue of word-class flexibility in old varieties of Chinese. It is based on a theoretical platform elaborated in my previous study, which itself drew on the corpus of Classical Chinese prose. An application of the theory on the Shījīng thus constitutes an extension of this material by reference to data from Pre-Classical poetry, which enables us to observe both similarities and possible differences between the two periods and styles of the language. Instances of well-established patterns are summarized in a list and supplemented by a brief commentary; much space is, on the other hand, dedicated to less predictable derivations, which deserve closer attention and call for a more detailed investigation. Special attention is paid also to the role of metaphor and metonymy in the respective processes. The analysis reveals the complexity and fine-grained stratification of the phenomenon at issue, tests and proves the usefulness of the system of interpretative instruments proposed earlier, and invites further exploration in relation to the role and distribution of noun-verb huóyòng in this canonical book.
For integers $m > r \geq0$, Brietzke (2008) defined the $(m,r)$-central coefficients of an infinite lower triangular matrix $G=(d, h)=(d_{n,k})_{n,k \in\mathbb{N}}$ as $ d_{mn+r,(m-1)n+r}$, with $n=0,1,2,\cdots$, and the $(m,r)$-central coefficient triangle of $G$ as $G^{(m,r)} = (d_{mn+r,(m-1)n+k+r})_{n,k \in\mathbb{N}}. $ It is known that the $(m,r)$-central coefficient triangles of any Riordan array are also Riordan arrays. In this paper, for a Riordan array $G=(d,h)$ with $h(0)=0$ and $d(0), h'(0)\not= 0$, we obtain the generating function of its $(m,r)$-central coefficients and give an explicit representation for the $(m,r)$-central Riordan array $G^{(m,r)}$ in terms of the Riordan array $G$. Meanwhile, the algebraic structures of the $(m,r)$-central Riordan arrays are also investigated, such as their decompositions, their inverses, and their recessive expressions in terms of $m$ and $r$. As applications, we determine the $(m,r)$-central Riordan arrays of the Pascal matrix and other Riordan arrays, from which numerous identities are constructed by a uniform approach., Sheng-Liang Yang, Yan-Xue Xu, Tian-Xiao He., and Obsahuje bibliografii
It is known that a ring $R$ is left Noetherian if and only if every left $R$-module has an injective (pre)cover. We show that $(1)$ if $R$ is a right $n$-coherent ring, then every right $R$-module has an $(n,d)$-injective (pre)cover; $(2)$ if $R$ is a ring such that every $(n,0)$-injective right $R$-module is $n$-pure extending, and if every right $R$-module has an $(n,0)$-injective cover, then $R$ is right $n$-coherent. As applications of these results, we give some characterizations of $(n,d)$-rings, von Neumann regular rings and semisimple rings.
In the present paper we are concerned with convergence in $\mu $-density and $\mu $-statistical convergence of sequences of functions defined on a subset $D$ of real numbers, where $\mu $ is a finitely additive measure. Particularly, we introduce the concepts of $\mu $-statistical uniform convergence and $\mu $-statistical pointwise convergence, and observe that $\mu $-statistical uniform convergence inherits the basic properties of uniform convergence.
Let $R$ be a ring and $M$ a right $R$-module. $M$ is called $ \oplus $-cofinitely supplemented if every submodule $N$ of $M$ with $\frac{M}{N}$ finitely generated has a supplement that is a direct summand of $M$. In this paper various properties of the $\oplus $-cofinitely supplemented modules are given. It is shown that (1) Arbitrary direct sum of $\oplus $-cofinitely supplemented modules is $\oplus $-cofinitely supplemented. (2) A ring $R$ is semiperfect if and only if every free $R$-module is $\oplus $-cofinitely supplemented. In addition, if $M$ has the summand sum property, then $M$ is $\oplus $-cofinitely supplemented iff every maximal submodule has a supplement that is a direct summand of $M$.
A sign pattern $A$ is a $\pm $ sign pattern if $A$ has no zero entries. $A$ allows orthogonality if there exists a real orthogonal matrix $B$ whose sign pattern equals $A$. Some sufficient conditions are given for a sign pattern matrix to allow orthogonality, and a complete characterization is given for $\pm $ sign patterns with $n-1 \le N_-(A) \le n+1$ to allow orthogonality.
We prove a separable reduction theorem for $\sigma $-porosity of Suslin sets. In particular, if $A$ is a Suslin subset in a Banach space $X$, then each separable subspace of $X$ can be enlarged to a separable subspace $V$ such that $A$ is $\sigma $-porous in $X$ if and only if $A\cap V$ is $\sigma $-porous in $V$. Such a result is proved for several types of $\sigma $-porosity. The proof is done using the method of elementary submodels, hence the results can be combined with other separable reduction theorems. As an application we extend a theorem of L. Zajíček on differentiability of Lipschitz functions on separable Asplund spaces to the nonseparable setting.
In [1], Jakubík showed that the class of $\sigma $-interpolation lattice-ordered groups forms a radical class, but left open the question of whether the class forms a torsion class. In this paper, we show that this class does indeed form a torsion class.
By analogy with the projective, injective and flat modules, in this paper we study some properties of $C$-Gorenstein projective, injective and flat modules and discuss some connections between $C$-Gorenstein injective and $C$-Gorenstein flat modules. We also investigate some connections between $C$-Gorenstein projective, injective and flat modules of change of rings.
For a nontrivial connected graph $F$, the $F$-degree of a vertex $v$ in a graph $G$ is the number of copies of $F$ in $G$ containing $v$. A graph $G$ is $F$-continuous (or $F$-degree continuous) if the $F$-degrees of every two adjacent vertices of $G$ differ by at most 1. All $P_3$-continuous graphs are determined. It is observed that if $G$ is a nontrivial connected graph that is $F$-continuous for all nontrivial connected graphs $F$, then either $G$ is regular or $G$ is a path. In the case of a 2-connected graph $F$, however, there always exists a regular graph that is not $F$-continuous. It is also shown that for every graph $H$ and every 2-connected graph $F$, there exists an $F$-continuous graph $G$ containing $H$ as an induced subgraph.
In this paper, we prove that a space $X$ is a $g$-metrizable space if and only if $X$ is a weak-open, $\pi $ and $\sigma $-image of a semi-metric space, if and only if $X$ is a strong sequence-covering, quotient, $\pi $ and $mssc$-image of a semi-metric space, where “semi-metric” can not be replaced by “metric”.
The concepts of $k$-systems, $k$-networks and $k$-covers were defined by A. Arhangel’skiǐ in 1964, P. O’Meara in 1971 and R. McCoy, I. Ntantu in 1985, respectively. In this paper the relationships among $k$-systems, $k$-networks and $k$-covers are further discussed and are established by $mk$-systems. As applications, some new characterizations of quotients or closed images of locally compact metric spaces are given by means of $mk$-systems.
Let $R$ be a commutative Noetherian ring. It is shown that the finitely generated $R$-module $M$ with finite Gorenstein dimension is reflexive if and only if $M_{\mathfrak p}$ is reflexive for ${\mathfrak p} \in {\rm Spec}(R) $ with ${\rm depth}(R_{\mathfrak p}) \leq 1$, and ${\mbox {G-{\rm dim}}}_{R_{\mathfrak p}} (M_{\mathfrak p}) \leq {\rm depth}(R_{\mathfrak p})-2 $ for ${\mathfrak p}\in {\rm Spec} (R) $ with ${\rm depth}(R_{\mathfrak p})\geq 2 $. This gives a generalization of Serre and Samuel's results on reflexive modules over a regular local ring and a generalization of a recent result due to Belshoff. In addition, for $n\geq 2$ we give a characterization of $n$-Gorenstein rings via Gorenstein dimension of the dual of modules. Finally it is shown that every $R$-module has a $k$-torsionless cover provided $R$ is a $k$-Gorenstein ring.
In this paper, we consider the global existence, uniqueness and $L^{\infty }$ estimates of weak solutions to quasilinear parabolic equation of $m$-Laplacian type $u_{t}-\mathop {\rm div}(|\nabla u|^{m-2}\nabla u)=u|u|^{\beta -1}\int _{\Omega } |u|^{\alpha } {\rm d} x$ in $\Omega \times (0,\infty )$ with zero Dirichlet boundary condition in $\partial \Omega $. Further, we obtain the $L^{\infty }$ estimate of the solution $u(t)$ and $\nabla u(t)$ for $t>0$ with the initial data $u_0\in L^q(\Omega )$ $(q>1)$, and the case $\alpha +\beta < m-1$.
In this paper $LJ$-spaces are introduced and studied. They are a common generalization of Lindelöf spaces and $J$-spaces researched by E. Michael. A space $X$ is called an $LJ$-space if, whenever $\lbrace A,B\rbrace $ is a closed cover of $X$ with $A\cap B$ compact, then $A$ or $B$ is Lindelöf. Semi-strong $LJ$-spaces and strong $LJ$-spaces are also defined and investigated. It is demonstrated that the three spaces are different and have interesting properties and behaviors.
We characterize statistical independence of sequences by the $L^p$-discrepancy and the Wiener $L^p$-discrepancy. Furthermore, we find asymptotic information on the distribution of the $L^2$-discrepancy of sequences.
We show for $2\le p<\infty $ and subspaces $X$ of quotients of $L_{p}$ with a $1$-unconditional finite-dimensional Schauder decomposition that $K(X,\ell _{p})$ is an $M$-ideal in $L(X,\ell _{p})$.
We study the position of compact operators in the space of all continuous linear operators and its subspaces in terms of ideals. One of our main results states that for Banach spaces $X$ and $Y$ the subspace of all compact operators $\mathcal K(X,Y)$ is an $M(r_1 r_2, s_1 s_2)$-ideal in the space of all continuous linear operators $\mathcal L(X,Y)$ whenever $\mathcal K(X,X)$ and $\mathcal K(Y,Y)$ are $M(r_1,s_1)$- and $M(r_2,s_2)$-ideals in $\mathcal L(X,X)$ and $\mathcal L(Y,Y)$, respectively, with $r_1+s_1/2>1$ and $r_2+s_2/2>1$. We also prove that the $M(r,s)$-ideal $\mathcal K(X,Y)$ in $\mathcal L(X,Y)$ is separably determined. Among others, our results complete and improve some well-known results on $M$-ideals.
In analogy with effect algebras, we introduce the test spaces and $MV$-test spaces. A test corresponds to a hypothesis on the propositional system, or, equivalently, to a partition of unity. We show that there is a close correspondence between $MV$-algebras and $MV$-test spaces.
In this paper, we study the existence of the $n$-flat preenvelope and the $n$-FP-injective cover. We also characterize $n$-coherent rings in terms of the $n$-FP-injective and $n$-flat modules.
We introduce the notion of weak dually residuated lattice ordered semigroups (WDRL-semigroups) and investigate the relation between $R_0$-algebras and WDRL-semigroups. We prove that the category of $R_0$-algebras is equivalent to the category of some bounded WDRL-semigroups. Moreover, the connection between WDRL-semigroups and DRL-semigroups is studied.
We observe that a separable Banach space $X$ is reflexive iff each of its quotients with Schauder basis is reflexive. Similarly if $\mathcal L(X,Y)$ is not reflexive for reflexive $X$ and $Y$ then $\mathcal L(X_1, Y)$ is is not reflexive for some $X_1\subset X$, $X_1$ having a basis.
The authors consider the changes in the conception, organization, ways of spending, and forms of leisure in the Czech Lands from the establishment of the Communist monopoly on power in early 1948 to the second half of the 1950s. (After this point leisure time here began strikingly to change under the infl uence of consumerist trends.) They consider the topic in the context of the dominant ideology and changes in economic, social, and arts policies. The authors take into account gender differences, contrasts between town and country, and special features of social groups. They pay particular attention to leisure amongst young people and children. The authors do not, however, see the Communist takeover of February 1948 as a watershed in the sphere of leisure. Instead, they demonstrate both the continuity and differences between the period of limited democracy, from May 1945 to February 1948, and the years that followed. In some cases, they highlight features that were identical in Nazi German and Communist approaches to leisure activities (the rejection of jazz, ''trash'' (brak) in the arts, and Western infl uences in general). The authors discuss how the Communist regime intervened intensively in the way people chose to spend their free time, in its endeavour to shape a new type of man and woman in the new social conditions. At the same time, particularly in the late 1940s and early 1950s, the State so emphasized the importance of the work of building socialism, that leisure was seen as a ''necessary evil'', since it used up valuable physical and mental energy that would have been better spent on increasing productivity. For the same aims, but also with regard to the idea of somewhatdemocratising the arts, the regime gave preference to activities such as political and vocational self-education as well as the study of selected arts and cultural values. In keeping with the subordination of the individual to the interests of society, collective forms of recreation and the leisure (holidays spent with groups of co-workers, mass group visits to plays, fi lms, concerts, museums, galleries, and, later, Pioneer camps) were given priority. Traditional club activity and individual leisure were seen as ''bourgeois survivals''. Some young people’s non-conformist leisure activities met with suspicion from the authorities or with outright repression. Amongst the models of leisure that the regime held worthy of emulation were the Socialist youth construction projects (stavby mládeže), ''volunteer'' work, and additional instruction or training. The new organizations, such as the Revolutionary Trades Union Movement (Revoluční odborové hnutí - ROH), the Czechoslovak Union of Youth (Československý svaz mládeže - ČSM), and the Union for Co-operation with the Army (Svaz pro spolupráci s armádou - Svazarm), which took the place of the earlier clubs and associations, comported with the new ideology and provided the required forms of leisure. The authorities endeavoured also to support considerably developed and differentiated hobbies, such as making art, playing board games, and collecting. Special facilities were established to run these activities, including the enterprise-based clubs of the ROH, houses of culture (kulturní domy), and people’s educational societies (osvětové besedy). Forms of universally accessible activity, like chess and phillumeny (collecting matchbox labels), were supported, whereas fi nancially more demanding hobbies or those linked to private gain, such as philately or numismatics, were marginalized. A slight retreat from the ideologised conception of leisure came with the so-called ''new course'' of 1953. But more striking changes were made in the second half of the 1950s. These years, which saw shorter working weeks, a higher standard of living than before, and the emergence of consumerist trends, are described by the authors as a period of the planned expansion of leisure and its gradual individualisation.
The study deals with issues of corporate management and pitfalls of the ''socialist supervision'' in Czechoslovak enterprises in the period of late socialism. Using documents of the Communist Party of Czechoslovakia and the State Security, period texts and specialized publications, it shows how party organs and state authorities were unsuccessfully trying to make supervisory mechanisms and audits a functional tool of the implementation of the ruling party´s economic policy. The author analyzes the supervisory and audit mechanisms that were used, and outlines basic reasons of the almost fatal failure of supervisory activities of the system which was, in a way, obsessed with supervision and control. He explains the systemic conditionality of the supervisory system which socialist managers often and in many respects bent to suit the needs of the enterprises they were in charge of; such situation naturally did not match the needs of the society as a whole. Using many specifi c cases as an example, the study graphically shows that members of the Czechoslovak corporate management community in the 1980s were fully aware of systemic, political and social limitations of the supervisory system which they managed to modify, fairly successfully, to suit intra-corporate conditions. The result was a situation in which the party leadership was reacting to increasingly obvious symptoms of the “agony of the centrally planned economy” by adopting various directives and guidelines to make the supervisory process more effective and to consistently promote the ''whoever manages - supervises'' principle. However, the anticipated effect did not materialize and, at the end of the day, the non-functional supervisory mechanisms made a substantial contribution to the collapse of the Communist regime in Czechoslovakia. and Překlad: Jiří Mareš