The relationship between ideals I of Turing degrees and groups of I-recursive automorphisms of the ordering on rationals is studied. We discuss the differences between such groups and the group of all automorphisms, prove that the isomorphism type of such a group completely defines the ideal I, and outline a general correspondence between principal ideals of Turing degrees and the first-order properties of such groups.

We study the relationship between algebraic structures and their inverse semigroups of partial automorphisms. We consider a variety of classes of natural structures including equivalence structures, orderings, Boolean algebras, and relatively complemented distributive lattices. For certain subsemigroups of these inverse semigroups, isomorphism of the subsemigroups yields isomorphism of the underlying structures. We also prove that for some classes of computable structures, we can reconstruct a computable structure, up to computable isomorphism, from the isomorphism type of its inverse semigroup of computable (...) partial automorphisms. (shrink)

This paper calculates, in a precise way, the complexity of the index sets for three classes of computable structures: the class $K_{\omega _{1}^{\mathit{CK}}}$ of structures of Scott rank $\omega _{1}^{\mathit{CK}}$ , the class $K_{\omega _{1}^{\mathit{CK}}+1}$ of structures of Scott rank $\omega _{1}^{\mathit{CK}}+1$ , and the class K of all structures of non-computable Scott rank. We show that I(K) is m-complete $\Sigma _{1}^{1},\,I(K_{\omega _{1}^{\mathit{CK}}})$ is m-complete $\Pi _{2}^{0}$ relative to Kleen's O, and $I(K_{\omega _{1}^{\mathit{CK}}+1})$ is m-complete $\Sigma _{2}^{0}$ relative to O.

We construct a computable vector space with the trivial computable automorphism group, but with the dependence relations as complicated as possible, measured by their Turing degrees. As a corollary, we answer a question asked by A.S. Morozov in [Rigid constructive modules, Algebra and Logic, 28 570–583 ; 379–387 ].

Considering the genesis of "critical theory" as an ideological current, we discover its deeper roots in the sociopolitical orientations of German social democracy between the two world wars. We have in mind: a) the negation of the Leninist analysis of imperialism and the Leninist theory of socialist revolution; b) the loss of faith in the revolutionary possibilities of the working class ; c) the fetishism of the economic factor , the isolation of economics from politics, culture and ideology; d) the (...) idea of Eurocentrism; e) an elitist position. (shrink)

The level of medical care to patients and the success of the implementation of the national project "Health" depend on the health status and doctor's professionalism. Modern healthcare reform is being implemented by optimizing costs, merging medical organizations, closing ineffective hospitals, expanding the use of high-tech care and informatization of the doctor's activities. All this makes it necessary to assess the health of doctors. Scientists have studied the quality of life and identified the professional burnout of doctors in children's clinics (...) in different age groups. Primary care pediatricians have a higher quality of life score when compared to the standard [1]. However, all groups have a high level of professional burnout. The pre-retirement group of doctors has more unfavorable profile. They are highly professional specialists but may experience emotional discomfort because the pension system has been reformed. This situation requires the introduction of preventive work with doctors of this age as a group with great potential and capable of professional longevity. (shrink)

In [5] it has been shown that for first-order definability over the reals there exists an effective procedure which by a finite formula with equality defining an open set produces a finite formula without equality that defines the same set. In this paper we prove that there exists no such procedure for Σ-definability over the reals. We also show that there exists even no uniform effective transformation of the definitions of Σ-definable sets into new definitions of Σ-definable sets in such (...) a way that the results will define open sets, and if a definition defines an open set, then the result of this transformation will define the same set. These results highlight the important differences between Σ-definability with equality and Σ-definability without equality. (shrink)

The article presents a theoretical analysis of the extramural polemic between Slavoj Žižek and Evald Ilyenkov, undertaken in the context of the search for the foundational underpinnings of the two philosophers’ perspectives on the limit-logical definitions of being. It shows how this apparently “abstract” search grows out of the socio-historical circumstances of the thinkers’ lives, which are inscribed in the dramatic conditions of existence of the political events of the twentieth century. The active life-political position of the follower of Marx’s (...) ideas, figuratively expressed in the text by Lenin’s term “tactics of social democracy” (Lenin 1962), is justified by one or another cognitive position: the unified attitude “not to explain but to transform the world” breaks down into various “tactics” precisely in the attempt to solve the problem of radical negativity (as Žižek formulates it). This is expressed in the division of Marxism into “Western” and “Eastern”. This article analyzes the legitimacy of such a division and shows the conditions for a disintegration of the divide. The relation of Ilyenkov and Žižek to Hegel’s works turns out to be the key to understanding this division, and consequently to the essential difference in socio-political attitudes and “tactics”, of which they are creative representatives. The analysis leads to the formulation of the “germ cell” of disagreement between Ilyenkov and Žižek—the problem of the universal—which unfolds in the difference between the thinkers’ positions on certain theoretical points. The limitation of Ilyenkov’s position, established under the fire of Žižek’s criticism, is removed, according to the author, by the development of a new category of “fractality”, which acts as a counterpart to the main dialectical category of “totality” and provides a concrete (in the Hegelian sense) solution to the problem of radical negativity in the spirit of the classical philosophical tradition. (shrink)

The relevance of the research. The various approaches are analyzed on the essence of nostalgia, ranging from psychological understanding of this phenomenon as emigrant`s neurosis and mental illness to a more profound comprehension of it as a cultural and philosophical “universalia” that concerns complicated mechanisms of historical memory, identity, time and eternity. Analysis of research and publications. Among contemporary researchers investigating the ethical, religious and cultural-historical dimensions of nostalgia, there should be mentioned S. Boim, F. Davis, S. Merzlyakov, V. Nurkov, (...) Y. Davydov, E. Loftus, O. Fedkov, M. Rewakowicz, M. Shkandrij, M. Boichenko, O. Yakovleva, V. Liakh, E. Novikov and many others researchers. The purpose of the paper is to examine the ethical and religious dimensions of nostalgia, to figure out the connection of nostalgia with the problems of memory, time and eternity. Presentation of the main research material. The article deals with the cultural phenomenon of nostalgia, its religious, ethical and general philosophical aspects. It is shown that nostalgia is based on memory value selectivity, due to which a moral tradition, social and individual identity, and the continuity of generations are established. Modern man rebels against the actual state of being as untrue and non-authentic. He feels nostalgia for the past as something right and proper. A person not only mythologizes, but also seeks to resurrect the past in a symbolic way. In this almost religious faith in the resurrection of what is gone there is an existential certainty for the final cancellation of time and triumph of eternity, within which everything is preserved and nothing is forgotten. Nostalgic lust for the past is inherent to humanity throughout its history and is especially actualized in the culture of postmodernism. Conclusion. Nostalgia is a kind of personal and social myth creation, the construction of the historical identity. It reconstructs the past, which appears not only valuable and significant for the present, but also proper. Nostalgia is a moral phenomenon based on a morally healthy memory, capable of forgiveness, reconciliation and love for one's own destiny. The attention is stressed on metaphysical, political and aesthetic forms of nostalgia that oppose destructive force of nihilism. (shrink)

Left-libertarianism comes in two main varieties: equal share and equal opportunity for well-being. Although equal share left-libertarians have supported a basic income guarantee, its equal opportunity counterparts either ignore a basic income in their theorizing or reject it. This article offers four reasons why left-libertarians should consider a basic income as a way to promote equality of opportunity for well-being: a basic income enhances self-respect, a basic income opens up the possibility of personal projects beyond traditional employment, a basic income (...) protects negative freedom, and a basic income minimizes potential for abuses and mistakes of centralized authorities. Peter Vallentyne’s objection to basic income is also considered. His asset-oriented account of the Lockean proviso is rejected in favor of an equality-promoting account that requires a substantial basic income. (shrink)

In recent years, Fabian Wendt’s sufficientarian or moderate libertarianism has stood out among theories of distributive justice. This theory is based on the project pursuit argument and recognizes individual’s rights to self-ownership and ownership of external resources. But the second of these rights is limited by the sufficiency proviso, which requires that all people have a minimum sufficient share of resources to engage in personal projects. This article takes a critical look at moderate libertarianism, showing that its limitation to the (...) sufficiency threshold is incompatible with its reliance on the project pursuit argument, since this argument implicitly assumes a presumption of equal concern for persons. In the absence of additional reasons, this presumption requires that people as projects pursuers be given not a sufficient, but an equal share of external resources. (shrink)

Humans are fundamentally social and tend to create emergent organizations when interacting with each other; from dyads to families, small groups, large groups, societies and civilizations. The study of the neuronal substrate of human social behavior is currently gaining momentum in the young field of social neuroscience. Hyperscanning is a neuroimaging technique by which we can study two or more brain simultaneously while participants interact with each other. The aim of this article is to discuss several factors that we deem (...) important in designing hyperscanning experiments. We first review hyperscanning studies performed by means of electroencephalography (EEG) that have been relying on a continuous interaction paradigm. Then, we provide arguments for favoring ecological paradigms, for studying the emotional component of social interactions and for performing longitudinal studies, the last two aspects being largely neglected so far in the hyperscanning literature despite their paramount importance in social sciences. Based on these premises we argue that music performance is a suitable experimental setting for hyperscanning and that for such studies EEG is an appropriate choice as neuroimaging modality. (shrink)

PurposeThe information technology related ethical issues will only increase in frequency and complexity with the increasing diffusion of IT in economies and societies. The purpose of this paper is to explore Egyptian students' attitudes towards the information ethics issues of privacy, access, property, and accuracy, and it evaluates the possible impact of a number of personal characteristics on such attitudes.Design/methodology/approachThis research utilized a cross‐sectional sample and data set to test five hypotheses. It adopted an instrument to collect the respondents' background (...) information and assess their attitudes towards the information ethics issues of privacy, property, accuracy, and access. Egyptian business students at Alexandria University were asked to participate in the survey. A total of 305 responses were collected and analyzed.FindingsThe analysis revealed that students are sensitive to the ethicality of information privacy, information accuracy, and information access. However, students are insensitive to the ethicality of property right. In addition, years of education have a main effect on students' attitudes towards property, and gender and age have an interaction effect on students' attitudes towards access.Research limitations/implicationsThe findings of this research are based on a cross‐sectional data set collected from a sample of business students at a public university. Students, however, may make poor surrogates for business or IT professionals. Future similar research designs that employ large samples from Egyptian working professionals and students in other private and public universities are needed to verify the findings of this research.Practical implicationsThe findings suggest that the investigated university as well as the other similar Egyptian universities should consider integrating ethics education into their curricula. Teaching information ethics, especially from an Islamic perspective, is expected to positively influence students' information ethical attitudes. The enforcement of the existing property right protection laws should also curb software piracy in the Egyptian market.Originality/valueIt is vital to expand the ethical research currently being performed in IT in order to help bridge the gap between behavior and IT. The findings of this research extend the understanding of students' attitudes towards the information ethics issues in Egyptian culture and contribute to the growing body of knowledge on global information ethics. (shrink)

Anna J Dare,1 Anthony RJ Phillips,1–3 Michael Chu,1 Anthony JR Hickey,2 Adam SJR Bartlett1–31Department of Surgery, 2Maurice Wilkins Centre for Biodiscovery, University of Auckland, Auckland, New Zealand; 3New Zealand Liver Transplant Unit, Auckland City Hospital, Auckland, New ZealandBackground: Hepatic steatosis is increasingly encountered among organ donors. Currently, there is no consensus guideline as to the type or degree of donor steatosis considered acceptable for liver transplantation, and little is known about local practices in this area. The aim of this survey (...) was to evaluate current clinical practices amongst liver transplant surgeons in Australia and New Zealand in the evaluation and use of steatotic donor livers in LT.Methods: An anonymous online twelve-question survey was emailed to all practicing LT surgeons in ANZ in January 2010.Results: The response rate was 83%. Estimated prevalence of steatosis in donor livers was between 40% and 60%. In determining suitability for LT, 90% of respondents reported rejecting organs with "severe" steatosis based on visual and palpation grounds alone. A total of 68% sought further histological assessment if the donor liver looked bad and there were risk factors for steatosis. The majority of respondents performed only one biopsy of the liver, using hematoxylin and eosin staining for fat assessment. There was wide variation in the upper limit of steatosis considered to be acceptable for LT. A total of 21% of respondents still considered microvesicular steatosis a risk factor for primary graft nonfunction.Conclusion: This survey highlights the significant variation in the appraisal and use of steatotic grafts by LT surgeons in ANZ. Accurate evaluation and judicious use of mild and moderately steatotic grafts is required if we are to utilize the available donor pool best.Keywords: liver transplantation, steatosis, fatty liver, organ donors. (shrink)

Critical study of of the addresses of Sir Muhammad Iqbal, 1877-1938 from philosophical and religious point of view.

On fundamentals of Nyaya philosophy with Nūtanāloka autocommentary and Ālokaprakāśa commentary by disciples.

Treatise on Viśiṣṭādvaita philosophy; Sanskrit text with coomentary and translation.

Книга предназначена для учащихся и преподавателей средних и высших учебных заведений, а также научных и работников и методистов, интересующихся вопросами социологии, религиоведения.

Hindu philosophical classic text on Vedānta philosophy, compiled from 108 Upanishads and Upadeśapañcadaśī of Satyanārāyaṇa Jhā; text with commentaries.

This paper is a survey of V.A. Smirnovs main results in modern logic.

Michael Choniates (c. 1138–c. 1222), a pupil of Eustathius of Thessalonica, who was Greek Orthodox Metropolitan of Athens for some 25 years up to that city's capture by Frankish crusaders ina.d.1205, is best known to classical scholars as the possessor of probably the last complete copy of Callimachus'HecaleandAetia. He had brought with him from Constantinople many books of all kinds, and added to his collection when in Athens. Although an immense task, it would be well worth trying to identify all (...) Michael's classical allusions, as an indication of how much ancient Greek literature was still available just before Constantinople too succumbed to the crusaders. (shrink)

HSÜN Tzu's essay on "Rectifying Terms" is justly considered a work of "great logical interest." For in this essay, one finds a remarkably modern concern with such topics as the rationale for having terms; the empirical and pragmatic bases for the classification of terms; the formation of generic and specific terms; the importance of observing established linguistic practices; the necessity of complying with proper standards for the institution, ratification, and regulation of the uses of language ; the nature of argumentative (...) discourse ; and the problems inherent in successful linguistic communication. A careful examination of some passages in other essays also suggests an awareness of the distinction between deductive, inductive, and analogical inferences, though Hsün Tzu provides us no explicit discussion of the nature of reasoning and its validating rules. (shrink)