Приказ резултата 461-480 од 1190

    • Mathematical Modeling of Integral Characteristics of Repair Process under Maintenance Contracts 

      Kontrec, Nataša; Vujaković, Jelena; Tošić, Marina; Panić, Stefan; Panić, Biljana (MDPI, 2021-12-08)
      The repair rate is a very important parameter for system maintainability and can be defined as a frequency of successfully performed repair actions on a failed component per unit of time. This paper analyzes the integral ...
    • Assessment of natural environment for the purposes of recreational tourism-example on Drina river flow (Serbia) 

      Pecelj, Milica; Vagić, Nemanja; Ristić, Dušan; Šušnjar, Sanda; Bogdanović, Uroš (European Association of Geographers (EUROGEO), 2019-09-10)
      The role of applied geography has been increasing in interdisciplinary research due to the advantage of knowing spatial processes and relations. This role has reflected in the geo-ecological evaluations of a particular ...
    • A Novel Approach for Determination of Reliability of Covering a Node from K Nodes 

      Panić, Biljana; Kontrec, Nataša; Vujošević, Mirko; Panić, Stefan (MDPI, 2020-09-05)
      In this paper, a stochastic problem of multicenter location on a graph was formulated through the modification of the existing p-center problem to determine the location of a given number of facilities, to maximize the ...
    • Novel Composite Approximation for the Gaussian Q-Function 

      Perić, Zoran; Marković, Aleksandar; Kontrec, Nataša; Panić, Stefan; Spalević, Petar (Kaunas University of Technology, 2020-10-27)
      This paper, by using Borjesson’s and Benitez’s approximation of Q-function, presents a novel and improved composite approximation of Q-function with wide applicability. The presented approach is very general and can be ...
    • System performances of sc reception in asymmetric multipath fading environments 

      Djosić, Danijel; Stefanović, Caslav; Milić, Dejan; Stefanović, Mihajlo (2019-06-23)
      The paper takes into consideration dual-branch selection combining (SC) diversity reception technique in the presence of dissimilar fading at their branches. We efficiently obtained first and second order closed form ...
    • Comparison of adaptive algorithms for free space optical transmission in Malaga atmospheric turbulence channel with pointing errors 

      Smilić, Marko; Nikolić, Zorica; Milić, Dejan; Spalević, Petar; Panić, Stefan (2019)
      In this study, the authors investigate average capacity of free space optics communication over Málaga atmospheric turbulence channel with pointing errors and path loss, for intensity modulated/direct detection (IM/DD) and ...
    • A Stochastic Model for Achieving Required Level of Availability Based on the Repair Rate Analysis 

      Контрец, Наташа; Петровић, Милена; Панић, Стефан; Милошевић, Хранислав (Strojarski fakultet u Slavonskom Brodu; Fakultet elektrotehnike, računarstva i informacijskih tehnologija Osijek; Građevinski i arhitektonski fakultet Osijek, 2019-07-25)
      The aim of this paper is to set framework for the repair rate in order to achieve required availability of a repairable system with alternating renewal process where the failure rate is Weibull distributed. In order to ...
    • Average Bit Error Rate Calculation Based on Using Piecewise Spline Approximation 

      Marković, Aleksandar; Perić, Zoran; Panić, Stefan; Spalević, Petar
      In this paper, an approximation of the average bit error rate (ABER) probability expression, standard performance measure of wireless transmission over fading channels using linear spline functions with corresponding number ...
    • Efficient Numerical Methods for Analysis of Square Ratio of kappa-mu and eta-mu Random Processes with Their Applications in Telecommunications 

      Milovanović, Gradimir; Suljović, Suad; Panić, Stefan; Kalčo, Ismet; Stefanović, Mihajlo
      We will provide statistical analysis of the square ratio of and random processes and its application in the signal-to-interference ratio (SIR) based performance analysis of wireless transmission subjected to the influence ...
    • Determinisanje promena u SRP “Gornje Podunavlje” (AP Vojvodina) primenom CORINE Land Cover (CLC) baze podataka (1990-2018) 

      Milentijević, Nikola; Ostojić, Miloš; Božović, Sanja; Stevanović, Vladica; Cimbaljević, Marija; Pantelić, Milana (Asocijacija prostornih planera Srbije, Univerzitet u Beogradu – Geografski fakultet, Beograd., 2021-10-27)
      Specijalni rezervat prirode (SRP) „Gornje Podunavlje“ je lociran u severozapadnoj Bačkoj, uz panonski sektor toka Dunava. U radu su predstavljene promene na osnovu CORINE Land Cover (CLC) baze podataka (1990-2018) za ...
    • Assessment of air temperature and precipitation trends: case study of Mačva (Serbia) 

      Milentijević, Nikola; Bačević, Nikola; Valjarević, Aleksandar; Radaković, Milica; Pantelić, Milana (University of Novi Sad, Faculty of Sciences, Department of Geography, Tourism and Hotel Management, Novi Sad, 2021-09-29)
      Recent climate change causes significant natural and socio-economic consequences. Global climate changes are caused by natural processes and anthropogenic factor. They represent one of the major environmental problems of ...
    • GIS analysis of land cover changes on the territory of the Prokuplje municipality 

      Valjarević, Aleksandar; Živković, Dragica; Valjarević, Dragana; Stevanović, Vladica; Golijanin, Jelena (Hindawi, 2014-01-03)
      The monitoring of the territory of Prokuplje Municipality was done based on 1 : 25,000 topographic maps in three different time periods (1969, 1974, and 1984) and land cover map in 2012. Analogous topographic maps done in ...
    • Application of Mann-Kendal (MK) test in trend analysis of air temperature and precipitation: Case of Mačva district (Serbia) 

      Milentijević, Nikola; Bačević, Nikola; Ristić, Dušan; Valjarević, Aleksandar; Pantelić, Milana; Kićović, Dušan (2020-06-30)
      Recent climate changes cause significant natural and socio-economic consequences. They represent one of the major environmental problems of the late 20th and early 21st centuries. Changes in temperature and precipitation ...
    • Assessment of observed and projected climate changes in Bačka (Serbia) using trend analysis and climate modeling 

      Milentijević, Nikola; Valjarević, Aleksandar; Bačević, Nikola; Ristić, Dušan; Kalkan, Kristina; Cimbaljević, Marija; Dragojlović, Jovan; Savić, Stevan; Pantelić, Milana (Hungarian Meteorological Service, 2022-03-08)
      Climate change is one of the largest environmental issues causing hydroclimatological extremes such as floods, droughts, and aridity. The aim of this study is to assess the observed and projected climate changes in Bačka ...
    • On a quarter-symmetric generalized metric connection in a generalized Riemannian manifold 

      Maksimović, Miroslav
      In this talk, we will discuss the generalized Riemannian manifold and introduce a quarter-symmetric connection that preserves the generalized Riemannian metric. We will also observe a quarter-symmetric connection with a ...
    • VISUALIZATION OF GEOMETRIC OBJECTS USING PROGRAM PACKAGE MATHEMATICA 

      Ljajko, Eugen; Najdanović, Marija; Maksimović, Miroslav; Kontrec, Nataša
      In geometry teaching, visualization is an indispensable method of work. Its importance is emphasized in the study of abstract theories when the human mind is not capable enough to perceive the regularities determined by ...
    • Analiza efekata primene GEOGEBRA-e na praćenje nastave geometrije 

      Maksimović, Miroslav; Kontrec, Nataša; Panić, Stefan; Petrović, Milena
      Istraživanja su pokazala da uprkos brojnim prednostima primene savremenih tehnologija u nastavi matematike sam proces uvođenja istih u učionice je spor i dosta složen. Upravo iz tih razloga, ovaj rad istražuje mogućnosti ...
    • CURVES ON RULED SURFACES UNDER INFINITESIMAL BENDING 

      Najdanović, Marija; Maksimović, Miroslav; Velimirović, Ljubica (Faculty of Sciences and Mathematics, University of Priština in Kosovska Mitrovica, Republic of Serbia., 2021-01-01)
      Infinitesimal bending of curves lying with a given precision on ruled surfaces in 3-dimensional Euclidean space is studied. In particular, the bending of curves on the cylinder, the hyperbolic paraboloid and the helicoid ...
    • Analysis of geodesics on different surfaces 

      Maksimović, Miroslav; Jovanović, Tanja; Ljajko, Eugen; Ivanović, Milica
      It is widely known that some surfaces contain special curves as a geodesics, while a lots of geodesics on surface have complicated shapes. Goal of this research is to find on what surfaces are u- and v- parameter curves ...
    • USE OF GEOGEBRA IN THE STUDY OF ROTATIONS 

      Maksimović, Miroslav; Kontrec, Nataša; Panić, Stefan (Western Serbia Academy of Applied Studies, Užice (Serbia), 2021-10-08)
      With the development of information technologies and educational software, there was a need for research and examination of how and in what way to use them in teaching, without losing the quality of existing traditional ...