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Search Results: 1 - 10 of 20 matches for " Gaudenji Tivadar "
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Quaternary stratigraphy: Recent changes
Gaudenji Tivadar,Jovanovi? Mla?en
Glasnik Srpskog Geografskog Dru?tva , 2012, DOI: 10.2298/gsgd1204001g
Abstract: Corrections to the Quaternary stratigraphic division of Serbia was updated/renewed by lowering limit of the Pleistocene / Quaternary to the beginning of the Gelasian that is at approximately 2.588 million years. Rather than the officially rejected Penck & Brückner Alpine stratigraphic model, the use of oxygen isotope stages (OIS / MIS) is recommended. Climatostratigraphic terms glacial and interglacial have a regional applicability and their use is recommended only in areas where there are traces of glaciation, while the terms cold and warm stage (or moderate) stages should be used within the global context. Eopleistocene is a regional term for the former Soviet Union and due to its uniqueness it can hardly be applied in the stratigraphical scheme of the Quaternary depostis in Serbia. With the latest extension of the Lower Pleistocene, further use of Eopleistocene would lead to further confusion in stratigraphic correlation as such the use of the Lower / Early Pleistocene or other appropriate stratigraphic units is recommended. [Projekat Ministarstva nauke Republike Srbije, br. 47007]
Pannonian plain as a morphostructural unit of Serbia
?ali? Jelena,Milo?evi? Marko V.,Gaudenji Tivadar,?trbac Dragoljub
Glasnik Srpskog Geografskog Dru?tva , 2012, DOI: 10.2298/gsgd1201047c
Abstract: Differentiation between the terms “Pannonian Basin” and “Pannonian Plain” is not clear enough in geographical literature. The paper discusses the usage of the term “plain” in geomorphology, as well as the usage of a quantitative method for plain delineation, through calculation of relief roughness coefficient (using a digital elevation model). Qualitative analysis, which includes the definition of dominant geomorphological processes and the distribution of Quaternary sediments, is an addition to the quantitative analysis. In the Republic of Serbia, the area of the Pannonian plain defined in this way is 24,448 km2, which is 27.5% of the total territory of the country. The paper gives the overview of the geotectonic structure and evolution of the Pannonian Basin System, with special stress on the territory of Serbia, as well as the chronology of the Pannonian sedimentation area in Serbia from the Lower Miocene till present. In order to explain the status of the Pannonian plain as one of the morphostructural units of Serbia, the theoretical basics of morphostructures are discussed, as well as the principles of their spatial definition and the relation to the notion of a geological structure. [Projekat Ministarstva nauke Republike Srbije, br. 47007]
Christoffel functions on Jordan curves with respect to measures with jump singularity
Tivadar Danka
Mathematics , 2015,
Abstract: In this paper we establish asymptotic results for Christoffel functions with respect to measures supported on Jordan curves having a Radon-Nikodym derivative with a jump singularity. We extend the results known for measures supported in the interval $ [-1,1] $ to more general sets, for example a system of Jordan curves, using polynomial inverse images. It is shown that the asymptotic limit can be written in terms of the equilibrium measure or Green's function.
Making connections through foodways: contemporary issues in anthropological and sociological studies of food
Liza Debevec,Blanka Tivadar
Anthropological Notebooks , 2006, DOI: 1234567
Abstract: This article is an introductory discussion of a special collection of articles on food, all based on research that looks at the world through the food lens, exploring the role of food as a medium for addressing ‘controversies’ that are not necessarily about food. The authors highlight major theoretical concepts from anthropology and the sociology of food and eating which arise out of seven research articles based on ethnographies from Malta, Great Britain, Spain, Indonesia, Central America and Slovenia. The first part of this article discusses the concept of a proper meal and related subjects, such as homemade food, health and the medicalisation of the everyday diet; the second part introduces theoretical accounts of the role of food in the perpetuation of social and ethnic differences, the appropriation of foreign foods into local cultures, and the revival of ‘authentic’food practices through the process of inventing traditions.
Asymptotic behavior of critical indecomposable multi-type branching processes with immigration
Tivadar Danka,Gyula Pap
Mathematics , 2014,
Abstract: In this paper the asymptotic behavior of a critical multi-type branching process with immigration is described when the offspring mean matrix is irreducible, in other words, when the process is indecomposable. It is proved that sequences of appropriately scaled random step functions formed from periodic subsequences of a critical indecomposable multi-type branching process with immigration converge weakly towards a process supported by a ray determined by the Perron vector of the offspring mean matrix. The types can be partitioned into nonempty mutually disjoint subsets (according to communication of types) such that the coordinate processes belonging to the same subset are multiples of the same squared Bessel process, and the coordinate processes belonging to different subsets are independent.
Christoffel functions with power type weights
Tivadar Danka,Vilmos Totik
Mathematics , 2015,
Abstract: Precise asymptotics for Christoffel functions are established for power type weights on unions of Jordan curves and arcs. The asymptotics involve the equilibrium measure of the support of the measure. The result at the endpoints of arc components is obtained from the corresponding asymptotics for internal points with respect to a different power weight. On curve components the asymptotic formula is proved via a sharp form of Hilbert's lemniscate theorem while taking polynomial inverse images. The situation is completely different on the arc components, where the local asymptotics is obtained via a discretization of the equilibrium measure with respect to the zeros of an associated Bessel function. The proofs are potential theoretical, and fast decreasing polynomials play an essential role in them.
Lazarus’ map of Hungary
Gaudenyi Tivadar,Jovanovi? Mla?en
Journal of the Geographical Institute Jovan Cvijic, SASA , 2012, DOI: 10.2298/ijgi1202117g
Abstract: Lazarus' map, Tabula Hungariae, is considered the oldest survived map of Hungary. The original was made around 1515, while a printed version appeared in 1528 in Ingolstadt. The technology used was stereotypical - printed in wood carving after which it was hand-painted. The map included the areas of present day Hungary, Slovakia, parts of Austria, the Czech Republic, Romania, Serbia, Croatia, Slovenia, Poland, and Ukraine. It was a much more detailed depiction, than anything produced up to that point, illustrating fortifications, settlements, and some historical events. It is an authentic and very valuable document with respect, also, to the situation in the northern part of present day Serbia, just before the Battle of Mohács and the Ottoman expansion after the battle. After its "re-discovery" in 1906, it represents a subject of study for a large number of researchers. It also represents a segment of planetary cultural heritage and, as of 2007, has found its place on UNESCO's Memory of the World Register. The original is kept in the Map Collection Hungarica, at the National Széchényi Library in Budapest. [Projekat Ministarstva nauke Republike Srbije, br. MNTR 47007]
What do Andy Warhol, pecorino and wasabi have in common? Food practices in Ljubljana and Maribor
Tanja Kamin,Blanka Tivadar,Samo Kropivnik
Dru?boslovne Razprave , 2012,
Abstract: The authors present an analysis of food practices based on the research project Media consumption, class and cultural stratification . A cluster analysis of data obtained from a random sample of the adult population in Ljubljana and Maribor, the two biggest cities in Slovenia, revealed four food cultures: Aspiring traditionalists (27% of the sample), Struggling traditionalists (32%), Health conscious and socially responsible hedonists (29%) and Traditionalists, adapted to urban trends (12%). The findings support previous research which recognises significant associations between food practices, socio-demographic factors (particularly education), values and cultural consumption. The data show that food practices in Ljubljana and Maribor are still primarily traditionalistic, as are several other practices of everyday life.
Reasoning Under the Principle of Maximum Entropy for Modal Logics K45, KD45, and S5
Tivadar Papai,Henry Kautz,Daniel Stefankovic
Computer Science , 2013,
Abstract: We propose modal Markov logic as an extension of propositional Markov logic to reason under the principle of maximum entropy for modal logics K45, KD45, and S5. Analogous to propositional Markov logic, the knowledge base consists of weighted formulas, whose weights are learned from data. However, in contrast to Markov logic, in our framework we use the knowledge base to define a probability distribution over non-equivalent epistemic situations (pointed Kripke structures) rather than over atoms, and use this distribution to assign probabilities to modal formulas. As in all probabilistic representations, the central task in our framework is inference. Although the size of the state space grows doubly exponentially in the number of propositions in the domain, we provide an algorithm that scales only exponentially in the size of the knowledge base. Finally, we briefly discuss the case of languages with an infinite number of propositions.
Serrated Pathway Adenocarcinomas: Molecular and Immunohistochemical Insights into Their Recognition
Simona Gurzu, Zoltan Szentirmay, Erika Toth, Tivadar Bara, Tivadar Bara, Ioan Jung
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0057699
Abstract: Introduction Colorectal adenocarcinomas (CRC) developed through serrated pathway seem to present particular behavior compared with the non-serrated ones, but recognition of them is difficult to do. The aim of our paper was to establish some criteria to facilitate their identification. Materials and Methods In 170 consecutive CRCs, we performed immunohistochemical staining with Cytokeratin 7 (CK7) and Cytokeratin 20 (CK20) and also with p53 and MLH-1. At the same time, we analyzed BRAF and K-ras mutations and the microsatellite status of CRC. Results 26.47% of cases expressed CK7, and 16.47% were CK20-negative. Diffuse positivity for CK7 was associated in the proximal colon with CK20 negativity or weak positivity, BRAF mutations, lack of K-ras mutations, and p53 and MLH-1 negativity. All these cases were microsatellite-unstable and were diagnosed in stage II. Those cases from the distal colon and rectum that expressed CK7 were K-ras-mutated and had low p53 index and MLH-1 positivity, independent of the CK20 expression. Conclusions CK7, associated with MLH-1 and p53 expression, and also with the microsatellite status, BRAF and K-ras pattern, might be used to identify the CRC potentially going through serrated pathway. The serrated pathway adenocarcinomas of the proximal colon that do not display the morphological features of this pattern are more frequent CK7+/p53?/MLH-1?/BRAF-mutated/K-ras-wt/M?SIcases, but those located in the distal colorectal segments seem to be CK7+/CK20+/p53?/MLH-1+/BRAF wt/K-ras-mutated/MSS cases.
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