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Search Results: 1 - 10 of 455 matches for " Ili? An?elija ?. "
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Preliminary results of ion trajectory tracking in the acceleration region of the VINCY cyclotron
Ili? An?elija ?.,Risti?-?urovi? Jasna L.,?irkovi? Sa?a T.
Nuclear Technology and Radiation Protection , 2006, DOI: 10.2298/ntrp0601029i
Abstract: In an accelerating region of a cyclotron, an ion makes a large number of turns; thus, its n the Runge-Kutta method of the fourth order with the adaptive time step has been developed. The accuracy requirement is simultaneously set on position and momentum calculation. Magnetic fields used as inputs, have been evaluated in terms of the radial fluctuations of the orbital frequency, i.e. their isochronisms. Ion trajectory tracking has been performed for the following four test beams: H-, H+3, 4He+, He+, and 40Ar6+.
Preliminary results of the ion trajectory tracking in the acceleration region of the VINCY Cyclotron
Ili? An?elija ?.,Risti?-?urovi? Jasna L.,?irkovi? Sa?a T.
Journal of Automatic Control , 2006, DOI: 10.2298/jac0601005i
Abstract: In an accelerating region of a cyclotron an ion makes a large number of turns; thus its tracking requires fast as well as highly accurate computation. Computer code, based on the adaptive time step fourth order Runge Kutta method, has been developed. Accuracy requirement is set simultaneously on the position and momentum calculation. Magnetic fields used as input, have been evaluated in terms of the radial fluctuations of the orbital frequency, i.e. their isochronism. Ion trajectory tracking has been performed for the four test beams: H-, H2 +, 4He+, and 40Ar6+.
Focusing limit of a cyclotron: Axial betatron instability against beam dynamics approach
?irkovi? Sa?a T.,Risti?-?urovi? Jasna L.,Ili? An?elija,Ne?kovi? Neboj?a
Nuclear Technology and Radiation Protection , 2006, DOI: 10.2298/ntrp0602040c
Abstract: In an isochronous relativistic cyclotron, axial defocusing of a beam caused by the radial growth of the isochronous magnetic field is compensated by the azimuthal field gradient introduced by sectors. The focusing capabilities of sectors set the maximum ion energy obtainable from the machine. Usually, the focusing limit of a machine is determined by using the criterion for axial beam instability evolving from the equations of betatron oscillations. The obtained value of the focusing limit is approximate because the equations of betatron oscillations it originates from are approximate as well. The accurate value of the focusing limit is obtained by simulating accelerated beam dynamics in the extraction region. It is shown that the focusing limit of a cyclotron resulting from the two methods could differ for more than 9%. The suggested third method for focusing limit computation relies on the beam dynamics simulation along the critical equilibrium orbit rather than the acceleration orbit and thus it is less time consuming although equally accurate.
Primary characteristic marriage in the neighbor countries
Ivkov An?elija
Glasnik Srpskog Geografskog Dru?tva , 2005, DOI: 10.2298/gsgd0501095i
Abstract: There is a number of data referring to the process of marriage and divorce witch show the marital situation region and also compare it with the situations in other regions or abroad. Apart from the average age of first marriage, we have also analyzable the rate of marriages and divorces, we compared our results with the data referring to Serbia, in the Republic of Srpska and some of the former republics of SFRY (Croatia, Slovenia Federation of Bosnia and Herzegovina) and neighbors Bulgaria, Romania Greece.
Folklore text in a process of oblivion
Ili? Marija
Glasnik Etnografskog Instituta SANU , 2005, DOI: 10.2298/gei0553319i
Abstract: The paper presents contemporary research of the traditional folklore from the perspective of ethno linguistics and anthrop linguistics. The analysis is based on material collected among Serbs from Szigetcsep (Hungary, 2001) during the ethno linguistic field survey. The paper specifically discusses the methods of collecting traditional folklore texts in the ethno linguistic interview, discourse analysis of utterances commenting on folklore texts and ways of memorization of folklore texts.
The first Alexandrian text-type on content analysis
Ili? Vladimir
Sociologija , 2011, DOI: 10.2298/soc1104453i
Abstract: The paper contains the examination of social and epistemological preconditions of the content analysis. The impact of social factors as well as one of the fashions in the science is stressed. The first section is devoted to epistemological problems concerning the relations among content analysis and the cognitive principles such as objectivity, reliability and validity. The second part deals with the relation between the theory and the empirical research in the case of content analysis. This text exposes introductional considerations for following paper that will be devoted to the clarification of technical research problems related to the content analysis.
Attitudes of the ethnic elites members in Vojvodina to minority rights and to interethnic relations
Ili? Vladimir
Sociologija , 2002, DOI: 10.2298/soc0201025i
Abstract: A survey was done with 100 distinguished members of cultural and media elite members. The results showed that ethnic elites in Vojvodina had better economic position than ordinary citizens, but that one ninth of them was poor. On inter-personal level they are very open towards the members of other ethnic groups. As for the attitudes, ethnic elites members differed from ordinary citizens mostly by strongly supporting market economy and liberal concept of development. They couldn't differentiate clearly between individual and collective rights. This was understandable since in multi-ethnic surrounding where Serbian ethnic nationalism still prevailed individual rights were to the great extent determined by ethnic origin. Minority ethnic communities elites had clearer understanding of this fact because their ethnic groups paid higher price in such circumstances. Members of least numerous ethnic groups mostly favored individual over collective rights, major cause for this being probably their fear from Serbian-Hungarian deal at the expense of third party. Yet, this survey's findings regarding this topic were substantially better than any before, since the awareness of need for collective rights to be recognized grew in all ethnic groups, including Serbs.
The second Alexandrian text-type on content analysis
Ili? Vladimir
Sociologija , 2012, DOI: 10.2298/soc1203481i
Abstract: The paper is divided into three sections. The first one deals with the problems of the reliability and validity. Second part of the text is devoted to the discussion among qualitative vs. quantitative approaches supporters. The issues of the using of computers and some possibilities of comparative framework in relation to the content analysis are considered into the third part of the paper.
Dynamics of linguistic and social change: Minority languages in Hungary and the sociolinguistic situation of Serbian
Ili? Marija
Ju?noslovenski Filolog , 2009, DOI: 10.2298/jfi0965331i
Abstract: Over the past decades, minority languages and processes of language shift/maintenance have become an important scholarly concern. This paper aims to describe in brief the sociolinguistic situation of the Serbian minority language in Hungary with special attention paid to the relation between language ideology and processes of language shift/maintenance. The first section of this paper presents the current socio-political framework for protection of minority languages in Hungary. The second paper's section provides an overview of the main sociolinguistic surveys of the minority languages in Hungary that have had many centuries of contact with Serbian i.e. German, Romanian, Bulgarian, and Croatian. Finally, the paper provides a quick recapitulation of the Serbian language research in Hungary, and depicts the current sociolinguistic situation of Serbian.
Root canal obturation by hybrid technique of thermomechanical gutta-percha compaction
Ili? Dragan
Stomatolo?ki Glasnik Srbije , 2004, DOI: 10.2298/sgs0402077i
Abstract: The purpose of the study was to present and discuss the thermomechanical hybrid technique in root canal obturation and investigate the efficiency of apical hermeticity. The hybrid obturation technique is well explained and performed through the lexan models and extracted teeth in aim of better visualisation and comprehension as suggested by the author Tagger and McSpadden’s articles. The technique consisted of lateral condensation of gutta-percha that was followed by thermomechanical compaction of the same mass using Ni-Ti flexible compactor. Firstly the master gutta-percha cone had to be adapted and then the master machine compactor selected for setting inside the canal. Upon laterally arranging gutta-percha cones, the master compactor was inserted between canal wall and gutta-percha. The master compactor was rotated for 5-6 seconds to creat heat to soften the cones to merge themselves and fill the first half of the canal. The bigger compactor served to fill the rest of the canal adding more gutta-percha cones. In comparison to the single cone and simple manual compaction techniques the hybrid technique is less time consuming more efficient in homogenicity and apical leakage. Considering the many device-consuming techniques the hybrid one is simpler to perform and cheaper as well. Precaution is to be taken when treating curved and narrow canals where much patience is needed due to possible compactor breakage and root fracture. It can be concluded that this hybrid technique is preferable particularly in cases of relatively straight canals with preserved apical foramen when time is to be saved for the radiographic and prosthetics procedure that has to be done during the same visit, which is very often convenient for patient and therapist.
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