MERGING EPISTEMIC AND TEMPORAL MODELS: A HISTORY-FREE APPROACH

There are two approaches to merging temporal and epistemic models. The first one consists in starting with a temporal model and enriching it with epistemic dimension (as tem- poral epistemic logic), while the second one is supposed to start with an epistemic model intro- ducing temporal dimension (dynamic epistemic logic, epistemic temporal logic). The proposed evolutionary epistemic model (EEM) is based on the standard epistemic model with an evolu- tionary relation. EEM captures knowledge changes in terms of the evolution of worlds included in different epistemic contexts. Unlike other temporal-epistemic models, EEM is free from the concept of history and enriched with quantification operators over the worlds’ evolution stages.There are two approaches to merging temporal and epistemic models. The first one consists in starting with a temporal model and enriching it with epistemic dimension (as temporal epistemic logic), while the second one is supposed to start with an epistemic model introducing temporal dimension (dynamic epistemic logic, epistemic temporal logic). The proposed evolutionary epistemic model (EEM) is based on the standard epistemic model with an evolu- tionary relation. EEM captures knowledge changes in terms of the evolution of worlds included in different epistemic contexts. Unlike other temporal-epistemic models, EEM is free from the concept of history and enriched with quantification operators over the worlds’ evolution stages

Excitation of magnetic precession in bismuth iron garnet via a polarization-independent impulsive photomagnetic effect

A polarization-independent, nonthermal optical effect on the magnetization in bismuth iron garnet is found, in addition to the circular polarization-dependent inverse Faraday effect and the linear polarization-dependent photoinduced magnetic anisotropy. Its impulsive character is demonstrated by the field dependence of the amplitude of the resulting precession, which cannot be explained by a long-living photo or heat-induced anisotropy.Comment: 12 pages, 3 Figure

Digitalization Possible – Main Achievements in Bulgarian Libraries

The aim of the paper is to systematize the main achievements regarding the digitalization of the cultural heritage in Bulgaria and to highlight the problems and recommendations for the continued integration of the Bulgarian cultural heritage in the pan-European context. The study is focused on six projects, split into two categories – initiated by Bulgarian institutions and participation in global initiatives. The idea is to show the overall progress in the development of Bulgarian libraries, and not to compare the importance of different projects. It is time to show some good examples and practices, which strengthened the place of Bulgarian specialists on the European and world stage: Projects BG0046 “Digitization and preservation of the written heritage of Bulgaria” and “Manuscripts and documentary monuments from the Bulgarian lands XIII – XVIII c.”; Project “Varna Digital Library”; Project “Digital cultural and historical heritage of The Municipality of Plovdiv”; IMPACT project; TELPlus project. The results achieved in these projects are an important example of progress in the perception of digitalization as a key method for preserving cultural heritage. The specificity of this process in the modern information society requires reconsideration of some important issues regarding copyright and preparation of well informed specialists. This is why the report also presents a short description of the аcademic discipline “Digitalization and Copyright” in University of Library Studies and Information Technologies (ULSIT) in order to show how important it is to integrate knowledge about the problems and achievements of the modern information society in the educational system

A shallow layer laboratory model of large-scale atmospheric circulation

A new shallow layer laboratory model of global atmosphere circulation is realized. The shallow rotating cylindrical layer of fluid with the localized heater at the bottom periphery and localized cooler in the central part of the upper boundary is considered. The rim heater imitates the equator heating and disc cooler -- the north pole cooling. The rim heater is intentionally shifted from the sidewall to decrease the influence of the no-slip vertical boundaries and provide anticyclonic-cyclonic motion in the upper layer, imitating the formation of large-scale zonal flows (easterlies and westerlies) in the low latitudes. The low-viscous silicon oil is used instead of water to avoid complex effects provided by the formation of a thin film of a surface-active substance on the open surface. The flow transforms from the Hadley-like regime to the baroclinic wave regime through transitional states. The decrease in the thermal Rossby number for the fixed value of Taylor number results in the regularization of the baroclinic waves. The main difference between presented and classical annulus configurations is the absence of the steady waves. All wave regimes, even with regular wave structures, are characterized by strong non-periodic fluctuations. The observed baroclinic wave structures are a combination of temporarily evolving different baroclinic modes. The presented model provides the formation of atmospheric-like flows, characterized by complex temporal behaviour and can serve as an efficient tool for studying different aspects of global atmospheric circulation

Rethinking Roma holocaust : victims or/and victors

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Orientalism in Romani studies : the case of Eastern Europe

The article offers an critical analysis of the current state of the academic approaches in the field of Romani studies through prism of Orientalist approach not only toward research subject but also towards Romani scholars from Roma and Non-Roma origin. The article presents different approaches and methodological problems that appear in the study of Roma who live in Eastern Europe, or of Eastern European Origin. Two basic paradigms of Romani studies and in social practice and politics are discussed – their exoticization and their marginalisation, which can take on features of one or both of these two paradigms. On this backdrop the issues of academic ethic in Romani studies is raised. The emergence of NGO-science and native science as specific reflection of the two basic paradigms are discussed as well.Postprin

Valery Sanarov – biography, creation, legends

The article presents the life and scientific work of V. I. Sanarov, scholar in the field of Gypsy studies, who actively worked in the 1960s and 1970s. This was a difficult period in the development of Gypsy studies in Russia and Eastern Europe. After publishing several articles in Russian and international journals, he married a Gypsy woman and suddenly disappeared from the sight of colleagues. Based on the personal correspondence, the memories of colleagues, Internet and other sources, the authors examine the main stages of V. I. Sanarov’s unusual biography and creation.Publisher PDFPeer reviewe