Municipality of Trstenik located in spacious valley of Zapadna Morava, has always provided favorable conditions for the settlement of the population and the development of settlements. After the World War II, there was a need for recruiting a large number of people because of a huge development of metal industry in Trstenik, and that fact attract the immigrants from the area of Rasina, Aleksandrovačka Župa, Podibra, Lepenica, Levač and Temnić. The ratio between autochthonous and migrant population according to 1961 Census was 69%:31%, while the same ratio for the 2011 census was 59%:41%. Nearly a quarter (24%) of total number of immigrants immigrated in the inter-census period from 1981. to 1991, and almost all (94% of immigrants) immigrated from the same area of the republic. The process of emigration particularly intensified in the early nineties of the XX century when young and highly educated population emigrate, and the main reason for that was a poor economic situation.
特拉斯滕尼克市位于扎帕德纳莫拉瓦广阔的山谷中，一直为人口的定居和住区的发展提供了有利条件。第二次世界大战后，由于特尔斯捷尼克金属工业的巨大发展，需要招募大量的人，这一事实吸引了来自Rasina, aleksandrova ka Župa, Podibra, Lepenica, levakei和temniki地区的移民。根据1961年人口普查，本地人口与外来人口的比例为69%:31%，而2011年人口普查的比例为59%:41%。近四分之一(24%)的移民是在1981年以来的两次人口普查期间移民的。到1991年，几乎所有的移民(94%的移民)都来自共和国的同一地区。移民的过程在20世纪90年代初尤其加剧，当时年轻和受过高等教育的人口移民，其主要原因是经济状况不佳。
{"title":"Contemporary migratory movements in the municipality of Trstenik","authors":"Saša Milosavljević","doi":"10.5937/UNIVTHO8-14183","DOIUrl":"https://doi.org/10.5937/UNIVTHO8-14183","url":null,"abstract":"Municipality of Trstenik located in spacious valley of Zapadna Morava, has always provided favorable conditions for the settlement of the population and the development of settlements. After the World War II, there was a need for recruiting a large number of people because of a huge development of metal industry in Trstenik, and that fact attract the immigrants from the area of Rasina, Aleksandrovačka Župa, Podibra, Lepenica, Levač and Temnić. The ratio between autochthonous and migrant population according to 1961 Census was 69%:31%, while the same ratio for the 2011 census was 59%:41%. Nearly a quarter (24%) of total number of immigrants immigrated in the inter-census period from 1981. to 1991, and almost all (94% of immigrants) immigrated from the same area of the republic. The process of emigration particularly intensified in the early nineties of the XX century when young and highly educated population emigrate, and the main reason for that was a poor economic situation.","PeriodicalId":22896,"journal":{"name":"The University Thought - Publication in Natural Sciences","volume":"51 1","pages":"34-39"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71153070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Culture and cultural phenomena are always in the focus of studying cultural geography. The study of Jerusalem from the aspect of supranational spread of culture is a special challenge. The cultural-geographical determinants of Jerusalem represent the features seen through the factors of time and space in which Jerusalem became and survived. The study of the morphology of cultural-geographical determinants in Jerusalem represents scientifically study of the relationship between man and his environment, the man's belief and application of perception of cultural-geographic determinants.
{"title":"CULTURAL-GEOGRAPHIC DETERMINANTS OF JERUSALEM","authors":"Jovo Medojević","doi":"10.5937/univtho8-15547","DOIUrl":"https://doi.org/10.5937/univtho8-15547","url":null,"abstract":"Culture and cultural phenomena are always in the focus of studying cultural geography. The study of Jerusalem from the aspect of supranational spread of culture is a special challenge. The cultural-geographical determinants of Jerusalem represent the features seen through the factors of time and space in which Jerusalem became and survived. The study of the morphology of cultural-geographical determinants in Jerusalem represents scientifically study of the relationship between man and his environment, the man's belief and application of perception of cultural-geographic determinants.","PeriodicalId":22896,"journal":{"name":"The University Thought - Publication in Natural Sciences","volume":"8 1","pages":"30-33"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71153216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Elementary description and information on a grid-connected photovoltaic solar power plant (PV plant) of 2 kWp installed in Niš and the influence of meteorological parameters on its operation are given in this paper. Besides, experimental results of the calculation of the energy efficiency, electrical energy generated and output power of this PV plant operating in the real climate conditions in 2017 are presented. The results regarding climate parameters and characteristic performance parameter of 2 kWp PV plant in Niš in 2017 are discussed and it was found that in 2017 annual energy efficiency of this PV plant was 10.63% and it decreased with the ambient temperature increasing.
{"title":"Influence of meteorological parameters on the operation of a grid - connected PV solar plant","authors":"D. Milosavljević","doi":"10.5937/UNIVTHO8-17271","DOIUrl":"https://doi.org/10.5937/UNIVTHO8-17271","url":null,"abstract":"Elementary description and information on a grid-connected photovoltaic solar power plant (PV plant) of 2 kWp installed in Niš and the influence of meteorological parameters on its operation are given in this paper. Besides, experimental results of the calculation of the energy efficiency, electrical energy generated and output power of this PV plant operating in the real climate conditions in 2017 are presented. The results regarding climate parameters and characteristic performance parameter of 2 kWp PV plant in Niš in 2017 are discussed and it was found that in 2017 annual energy efficiency of this PV plant was 10.63% and it decreased with the ambient temperature increasing.","PeriodicalId":22896,"journal":{"name":"The University Thought - Publication in Natural Sciences","volume":"8 1","pages":"56-61"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71153818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Concept of causality is very popular and applicable nowadays, especially when we consider the cases "what would happen if" and "what would have happened if". Here we consider the concept of causality based on the Granger’s definition of causality, introduced in Mykland (1986). Many of the systems to which it is natural to apply tests of causality take place in continuous time, so we will consider the continuous time processes. Here we consider the connection between the concept of causality and the property of being a quasimartingale. Quasimartingales were investigated by Fisk (1965), Orey and specially Rao (1969). Namely, in this paper we prove an equivalence between the given concept of causality and preservation of quasimartingale property if the filtration is getting larger. We prove the same equivalence for the stopped quasimartingale with respect to the truncated filtrations.
{"title":"Statistical causality and quasimartingales","authors":"D. Valjarević, L. Petrovic","doi":"10.5937/UNIVTHO8-18934","DOIUrl":"https://doi.org/10.5937/UNIVTHO8-18934","url":null,"abstract":"Concept of causality is very popular and applicable nowadays, especially when we consider the cases \"what would happen if\" and \"what would have happened if\". Here we consider the concept of causality based on the Granger’s definition of causality, introduced in Mykland (1986). Many of the systems to which it is natural to apply tests of causality take place in continuous time, so we will consider the continuous time processes. Here we consider the connection between the concept of causality and the property of being a quasimartingale. Quasimartingales were investigated by Fisk (1965), Orey and specially Rao (1969). Namely, in this paper we prove an equivalence between the given concept of causality and preservation of quasimartingale property if the filtration is getting larger. We prove the same equivalence for the stopped quasimartingale with respect to the truncated filtrations.","PeriodicalId":22896,"journal":{"name":"The University Thought - Publication in Natural Sciences","volume":"13 1","pages":"49-53"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71153797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A comparative analysis of electronic and traditional learning","authors":"N. Denić, Merdan Zejnelagić, Nataša Kontrec","doi":"10.5937/UNIVTHO8-18627","DOIUrl":"https://doi.org/10.5937/UNIVTHO8-18627","url":null,"abstract":"","PeriodicalId":22896,"journal":{"name":"The University Thought - Publication in Natural Sciences","volume":"8 1","pages":"67-72"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71153606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Svetlana Belošević, M. Rodić, M. Radanović, V. Leovac
The molecular and crystal structure of a newly synthesized Co(II) complex with 2,6-diacetylpyridine bis(phenylhydrazone) (L), of the formula [CoL2]I2 are described. The reaction of warm EtOH solutions of the ligand, 2,6-diacetylpyridine bis(phenylhydrazone) and CoI2 in molar ratio 1:1 resulted in formation of black single crystals of the title complex. This is the first and so far, the only metal complex with this ligand that is characterized by single crystal X-ray crystallography. Co(II) is situated in a distorted mer-octahedral surrounding of two tridentate N3 coordinated ligand molecules. Complex crystallizes in monoclinic crystal system in C2/c space group. Besides X-ray analysis, conductometric, spectroscopic and magnetic properties of the complex are investigated.
{"title":"Synthesis and structure of cobalt(II) complex with 2,6-diacetylpyridine-bis(phenylhydrazone)","authors":"Svetlana Belošević, M. Rodić, M. Radanović, V. Leovac","doi":"10.5937/UNIVTHO8-19451","DOIUrl":"https://doi.org/10.5937/UNIVTHO8-19451","url":null,"abstract":"The molecular and crystal structure of a newly synthesized Co(II) complex with 2,6-diacetylpyridine bis(phenylhydrazone) (L), of the formula [CoL2]I2 are described. The reaction of warm EtOH solutions of the ligand, 2,6-diacetylpyridine bis(phenylhydrazone) and CoI2 in molar ratio 1:1 resulted in formation of black single crystals of the title complex. This is the first and so far, the only metal complex with this ligand that is characterized by single crystal X-ray crystallography. Co(II) is situated in a distorted mer-octahedral surrounding of two tridentate N3 coordinated ligand molecules. Complex crystallizes in monoclinic crystal system in C2/c space group. Besides X-ray analysis, conductometric, spectroscopic and magnetic properties of the complex are investigated.","PeriodicalId":22896,"journal":{"name":"The University Thought - Publication in Natural Sciences","volume":"8 1","pages":"33-38"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71153933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper, the analysis of Shannon capacity for selection combining (SC) and maximal ratio combining (MRC) diversity systems in the generalized α − κ − μ fading channel is presented. Closed-form expressions for probability density function (PDF) at the output of SC and MRC diversity systems are given. Also, closed-form expressions for Shannon capacity for cases of SC diversity with independent and identically distributed branches, MRC diversity with independent and identically distributed branches and for case of no diversity are derived. The obtained results are numerically calculated and graphically presented for different combinations of fading parameters α, κ and μ.
{"title":"Analysis of Shannon capacity for SC and MRC diversity systems in α - κ - μ fading channel","authors":"Milan S. Savic, Marko Smilic, B. Jaksic","doi":"10.5937/UNIVTHO8-19491","DOIUrl":"https://doi.org/10.5937/UNIVTHO8-19491","url":null,"abstract":"In this paper, the analysis of Shannon capacity for selection combining (SC) and maximal ratio combining (MRC) diversity systems in the generalized α − κ − μ fading channel is presented. Closed-form expressions for probability density function (PDF) at the output of SC and MRC diversity systems are given. Also, closed-form expressions for Shannon capacity for cases of SC diversity with independent and identically distributed branches, MRC diversity with independent and identically distributed branches and for case of no diversity are derived. The obtained results are numerically calculated and graphically presented for different combinations of fading parameters α, κ and μ.","PeriodicalId":22896,"journal":{"name":"The University Thought - Publication in Natural Sciences","volume":"8 1","pages":"61-66"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71154135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Prodanović, Z. Krivošej, M. Stanojevic, S. Ćirić
This paper reports the chorological data on 3 internationally significant floristic species in Serbia, in the Ibar river valley, Kosovo and Metohija North. Those are: Gladiolus palustris Gaudin, Himantoglossum caprinum (M. Bieb) Spreng. and Narcissus poeticus subsp. radiiflorus (Salisb.) Baker. It also reports new research findings on a rare species of vascular flora of Serbia Phlomoides tuberosa (L.) Moench. The distribution of the mentioned species is shown in UTM 10 km X 10 km squares, based on the field researches, herbarium collections inspections and literature data. As the studied species belong to the group of internationally important and rare species, the familiarity with the status of their populations and degree of their vulnerability would present a good basis for monitoring their protection both in Serbia and Europe.
{"title":"Supplement to the phytogeographical studies of the rare and internationally significant species in the flora of Serbia, Kosovo and Metohija north","authors":"D. Prodanović, Z. Krivošej, M. Stanojevic, S. Ćirić","doi":"10.5937/UNIVTHO8-15361","DOIUrl":"https://doi.org/10.5937/UNIVTHO8-15361","url":null,"abstract":"This paper reports the chorological data on 3 internationally significant floristic species in Serbia, in the Ibar river valley, Kosovo and Metohija North. Those are: Gladiolus palustris Gaudin, Himantoglossum caprinum (M. Bieb) Spreng. and Narcissus poeticus subsp. radiiflorus (Salisb.) Baker. It also reports new research findings on a rare species of vascular flora of Serbia Phlomoides tuberosa (L.) Moench. The distribution of the mentioned species is shown in UTM 10 km X 10 km squares, based on the field researches, herbarium collections inspections and literature data. As the studied species belong to the group of internationally important and rare species, the familiarity with the status of their populations and degree of their vulnerability would present a good basis for monitoring their protection both in Serbia and Europe.","PeriodicalId":22896,"journal":{"name":"The University Thought - Publication in Natural Sciences","volume":"8 1","pages":"10-16"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71153170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper we study infinitesimal bending of curves that lie on the ruled surfaces in Euclidean 3-dimensional space. We obtain an infinitesimal bending field under whose effect all bent curves remain on the same ruled surface as the initial curve. Specially, we consider infinitesimal bending of the curves which belong to the cylinder as well as to the hyperbolic paraboloid and find corresponding infinitesimal bending fields. We examine the variation of the curvature of a curve under infinitesimal bending on the hyperbolic paraboloid. Some examples are visualized using program packet Mathematica.
{"title":"Infinitesimal bending of curves on the ruled surfaces","authors":"Marija S. Najdanovic, L. Velimirović","doi":"10.5937/UNIVTHO8-17403","DOIUrl":"https://doi.org/10.5937/UNIVTHO8-17403","url":null,"abstract":"In this paper we study infinitesimal bending of curves that lie on the ruled surfaces in Euclidean 3-dimensional space. We obtain an infinitesimal bending field under whose effect all bent curves remain on the same ruled surface as the initial curve. Specially, we consider infinitesimal bending of the curves which belong to the cylinder as well as to the hyperbolic paraboloid and find corresponding infinitesimal bending fields. We examine the variation of the curvature of a curve under infinitesimal bending on the hyperbolic paraboloid. Some examples are visualized using program packet Mathematica.","PeriodicalId":22896,"journal":{"name":"The University Thought - Publication in Natural Sciences","volume":"8 1","pages":"46-51"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71153890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Novica R. Ristić, N. Radulović, B. Dekić, Milenko N. Ristić, V. Dekić
Synthesis, spectral characterization, and evaluation of in vitro antioxidant activity of a new coumarin derivative, 4- ((1,3,4-thiadiazol-2-yl)amino)-3-nitro-2H-chromene-2-one, are described. The synthesis of the new product was performed in three reaction steps, with a good overall yield (78%). The structure was corroborated by detailed spectral analysis, including the 1D and 2D NMR experiments (1H- and 13C NMR; 1H-1H COSY, NOESY, HSQC, and HMBC). The in vitro antioxidant activity was evaluated using the DPPH test. The synthesized compound possesses a good free-radical scavenging activity, IC50=596.7±0.3 μg/ml, and can serve as a model for the synthesis of similar compounds with promising antioxidant effects.
{"title":"Synthesis and antioxidant activity of a new 4-aminocoumarin derivative","authors":"Novica R. Ristić, N. Radulović, B. Dekić, Milenko N. Ristić, V. Dekić","doi":"10.5937/UNIVTHO8-19770","DOIUrl":"https://doi.org/10.5937/UNIVTHO8-19770","url":null,"abstract":"Synthesis, spectral characterization, and evaluation of in vitro antioxidant activity of a new coumarin derivative, 4- ((1,3,4-thiadiazol-2-yl)amino)-3-nitro-2H-chromene-2-one, are described. The synthesis of the new product was performed in three reaction steps, with a good overall yield (78%). The structure was corroborated by detailed spectral analysis, including the 1D and 2D NMR experiments (1H- and 13C NMR; 1H-1H COSY, NOESY, HSQC, and HMBC). The in vitro antioxidant activity was evaluated using the DPPH test. The synthesized compound possesses a good free-radical scavenging activity, IC50=596.7±0.3 μg/ml, and can serve as a model for the synthesis of similar compounds with promising antioxidant effects.","PeriodicalId":22896,"journal":{"name":"The University Thought - Publication in Natural Sciences","volume":"8 1","pages":"27-32"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71154205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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