Hungarian prisoners of War in Albania under Italian control during WWI

During the First World War, the Italian leadership transferred over ten thousand prisoners of war to Albania for forced labour, starting from the autumn of 1917. Among them there were more than four thousand Hungarians, who built and repaired roads, railroads, bridges, and communication networks, and cleared the land to stop the spread of malaria. The POWs were taken from Italian internment camps because the Albanian front did not generate the necessary amount of POW workforce. They lived in harsh circumstances due to food shortage, the spread of malaria and the hard physical work. Many wrote memoirs, or messages on postcards, including lance corporal János Kozeschnik and corporal László Horthy, which I also examined in the paper

High order discretizations for spatial dependent SIR models

In this paper, an SIR model with spatial dependence is studied and results regarding its stability and numerical approximation are presented. We consider a generalization of the original Kermack and McKendrick model in which the size of the populations differs in space. The use of local spatial dependence yields a system of integro-differential equations. The uniqueness and qualitative properties of the continuous model are analyzed. Furthermore, different choices of spatial and temporal discretizations are employed, and step-size restrictions for population conservation, positivity, and monotonicity preservation of the discrete model are investigated. We provide sufficient conditions under which high order numerical schemes preserve the discrete properties of the model. Computational experiments verify the convergence and accuracy of the numerical methods.Comment: 33 pages, 5 figures, 3 table

Operator splitting for space-dependent epidemic model

We present and analyse numerical methods with operator splitting procedures, applied to an epidemic model which takes into account the space-dependence of the infection. We derive conditions on the time step, under which the numerical methods preserve the non-negativity and monotonicity properties of the exact solution. Our results are illustrated by numerical experiments

Effects of the analysed variable set composition on the results of distance-based morphometric surveys.

Distance-based morphometry is still widely used in ichthyology. Beside others, this methodology is often used to characterise species or to compare intraspecific group (i.e. population level) differences. However, scarce information is available about: (a) which are the most widely used variables for these purposes, (b) how certain variables are selected for the morphometric analyses, and (c) how variable set compositions and the number of variables affect the results. To answer these questions, a literature review was compiled and our own three data- sets were analysed. The results showed that although a high number of variables can be used, previous authors have measured “common” ones most often, regardless of the taxonomic position of the studied group and the goal of the survey. Additionally, our review showed that authors rarely made a variable selection and often did not standardise their datasets; these are methodical problems that make the accuracy and usability of the results questionable. Analy- ses of our own three datasets showed that the number of variables and the variable set compositions in most cases strongly influenced stock subdivision and the percentage of correctly classified individuals. It was also shown that the most useable variable sets for morphometric purposes can differ considerably depending on the taxon and goal of the survey

Igei bővítménykeretek fordítási ekvivalenseinek kinyerése mélyen elemzett párhuzamos korpuszból

Jelen cikk célja annak vizsgálata, hogy a mély szintaktikai elemzés növeli-e a fedést és a pontosságot igei szerkezetek fordítási megfelelinek teljesen automatikus kinyerése során. Els lépésként a párhuzamos korpusz forrásnyelvi és célnyelvi oldalát külön-külön elemeztük, majd ebbl nyertük ki az igei szerkezeteket egy felügyelet nélküli tanuló algoritmussal. Az így elállt igeiszerkezet-listát gyakorisági alapon szrtük. A következ lépésben az igei szerkezeteket egytagú kifejezésekké vontuk össze a párhuzamos korpuszban, hogy az egytokenes igei szerkezetek az illesztési algoritmus bemeneteként szolgálhassanak. Eredményeink azt mutatják, hogy az alkalmazott módszer jól használható igei szerkezetek fordítási ekvivalenseinek detekciójára

Synthesis and characterization of long-chain tartaric acid diamides as novel ceramide-like compounds

molecule

The effect of tree-diffusion in a mathematical model of Easter Island’s population

A number of theories have been constructed to explain the ecological collapse of the Easter Island. Basener and his co-authors proposed a mathematical model in the form of a system of ordinary differential equations. This system describes the change of the number of people, rats and trees in some subregions of the island. The movement of the human and rat populations was described by some diffusion parameters. They showed that the increase of the diffusion parameters of people and rats makes the system unstable. In the present paper we introduce a diffusion parameter for the tree population and show that this parameter has a stabilizing effect. Thus, it behaves oppositely to the other two diffusion parameters from the stability point of view. The results are demonstrated with some numerical calculations of the stability region