Prikazano Природно-математички факултет za naslov
Prikaz rezultata 21-40 od 269
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Assessment of natural environment for the purposes of recreational tourism-example on Drina river flow (Serbia)
(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 ... -
Assessment of observed and projected climate changes in Bačka (Serbia) using trend analysis and climate modeling
(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 ... -
Assessment of soil erosion rates using Revised Universal Soil Loss Equation (RUSLE) and GIS in Bačka (Serbia)
(2021-10-01)Soil erosion assessment enables the identification of manifested soil erosion categories, their spatial distribution and the relationship between soil erosion and land use patterns. The integrated approach of the RUSLE ... -
Average Bit Error Rate Calculation Based on Using Piecewise Spline Approximation
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 ... -
Binary Quantization Analysis of Neural Networks Weights on MNIST Dataset
(Kaunas University of Technology, 2021-08-23)This paper considers the design of a binary scalar quantizer of Laplacian source and its application in compressed neural networks. The quantizer performance is investigated in a wide dynamic range of data variances, and ... -
Biocomposites Based On Cellulose And Starch Modified Urea-Formaldehyde Resin: Hydrolytic, Thermal And Radiation Stability
(Wiley, 2019-04-10)Two biocomposites based on cellulose (UFC) and starch modified urea formaldehyde (UFS) resin (F/U ratio of 0.8) were synthesized using the same procedure. The hydrolitical, thermal, and radiation stability of biocomposites ... -
Boron-doped diamond electrode as efficient sensing platform for simultaneous quantification of mefenamic acid and indomethacin
Mefenamic acid and indomethacin, medicaments belonging to the group of non-steroidal anti-inflammatory agents, were determined separately and simultaneously at anodically prepared BDDE. Differential pulse voltammetry was ... -
Boron-doped diamond electrode-a prestigious unmodified carbon electrode for simple and fast determination of bentazone in river water samples
Bentazone (BZ) is selective contact-past herbicide with suspected reproductive toxicity potential for human due to possible contamination of ground and surface waters. This work presents simple, rapid, sensitive and accurate ... -
(C , Ψ * , G ) Class of Contractions and Fixed Points in a Metric Space Endowed with a Graph
(MDPI (Basel, Switzerland), 2019-05-27)In this paper, we introduce the (C,Ψ∗,G) class of contraction mappings using C-class functions and some improved control functions for a pair of set valued mappings as well as a pair of single-valued mappings, and prove ... -
C-class functions on some fixed point results in ordered partial metric spaces via admissible mappings
(Department of Mathematics and Informatics, Faculty of Sciences, Novi Sad, 2018-06-05)In this paper, we generalized the results presented in the paper W. Long, S. Khaleghizadeh, P. Salimi, S. Radenović and S. Shukla, Some new fixed point results in partially ordered metric spaces via admissible mappings, ... -
Calculation of Bandwidth of Multimode Step-Index Polymer Photonic Crystal Fibers
(MDPI, 2021-12-01)By solving the time-dependent power flow equation, we present a novel approach for evaluating the bandwidth in a multimode step-index polymer photonic crystal fiber (SI PPCF) with a solid core. The bandwidth of such fiber ... -
Calculation of the bandwidth of W-type photonic crystal fibers by time-dependent power flow equation
(Elsevier, 2018-06-30)A multimode photonic crystal fiber with a solid-core takes the characteristic W-shaped index profile upon forming an inner cladding layer with its own value of the effective refractive index corresponding to the distinct ... -
Calculation of the mode coupling coefficient in step-index plastic optical fibers based on the far field measurements
(Frontiers, 2022-05-25)Using the power flow equation (PFE), this article investigates mode coupling in step-index (SI) multimode (MM) polymer optical fiber (POF). This equation’s coupling coefficient was initially fine-tuned so that it could ... -
Caristi, Nadler and H + -Type Contractive Mappings and Their Fixed Points in θ-Metric Spaces
(MDPI (Basel, Switzerland), 2019-04-07)A new proper generalization of metric called as θ -metric is introduced by Khojasteh et al. (Mathematical Problems in Engineering (2013) Article ID 504609). In this paper, first we prove the Caristi type fixed point theorem ... -
Causality between stopped filtrations and some applications
(2021-11-21)In this paper we consider the concept of statistical causality in continuous time between filtrations associated with stopping times, which is based on Granger’s definition of causality. Especially, we consider a ... -
CeO2-doped – domestic carbon material decorated with MWCNT as an efficient green sensing platform for electrooxidation of dopamine
The goal of this work was to develop green electrode material that unites all advantages of domestic made, synthesized porous carbon powder and ceria dioxide nanoparticles known due to exceptional catalytic properties. ... -
Characterization of new syntethesized Fe2O3 nanoparticles and their application as detection signal amplifiers in herbivide bentazone electroanalytical determination
The iron oxide nanoparticles (Fe2O3 NPs) were synthesized from two different iron salts by solid-state synthesis method. The synthesized powder of Fe2O3 NPs is soluble in water, and the colloidal dispersion was characterized ... -
Chemometrics based on the mineral content as a tool for the assessment of the pollution of top soils
This is the first research of this type which includes the wider area of Kosovo taking into account the mineral wealth. The concentrations of 20 elements: Al, As, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, P, Pb, Se, ... -
Coincidence Point Results for Multivalued Suzuki Type Mappings Using θ-Contraction in b-Metric Spaces
(MDPI (Basel, Switzerland), 2019-10-25)In this paper, we introduce the concept of coincidence best proximity point for multivalued Suzuki-type α -admissible mapping using θ -contraction in b-metric space. Some examples are presented here to understand the use ... -
Commercial software packages in relation to standard methods of teaching physics in primary education in rural areas of Serbia
(2019-12-19)Na osnovu pregleda najsavremeniji nastavni proces fizike u osnovnim školama svake godine postaje izazovniji. Glavno pitanje je kako pronaći prikladna sredstva za približavanje fizike učenicima. Na fizici primarnog nivoa ...