Приказано Природно-математички факултет за наслов
Приказ резултата 211-230 од 269
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Some new identities for the second covariant derivative of the curvature tensor
In this paper, we have studied the second covariant derivative of Riemannian curvature tensor. Some new identities for the second covariant derivative have been given. Namely, identities obtained by cyclic sum with respect ... -
Some New Results for Jaggi-W-Contraction-Type Mappings on b-Metric-like Spaces
(MDPI (Basel, Switzerland), 2021-08-12)In this article, we generalize, improve, unify and enrich some results for Jaggi-W-contraction-type mappings in the framework of b-metric-like spaces. Our results supplement numerous methods in the existing literature, and ... -
Some recent fixed point results of F-contractive mappings in metric space
The opinion is that the most important result in the metrical theory of fixed points is the famous Banach contraction principle from 1922. It has been generalized and extended in several directions. One of the most ... -
Some Remarks and New Results in Ordered Partial b-Metric Spaces
(MDPI (Basel, Switzerland), 2019-04-06)We improve and generalize some new results in fixed point theory in the context of partial b-metric spaces -
Some remarks on TAC-contractive mappings in b-metric spaces
(Društvo matematičara Srbije, 2018-09-03)In this paper we complement and improve fixed point results established on TAC-contractive mappings in the framework of b-metric spaces. Our analysis starts by a recent paper of Babu and Dula [G. V. R. Babu and T. M. ... -
Spa environments in central Serbia: Geothermal potential, radioactivity, heavy metals and PAHs
This study aims to estimate geothermal potential, radioactivity levels, and environmental pollution of sixmost popular spas in Central Serbia (Ovcar, Gornja Trepca, Vrnjacka, Mataruska, Bogutovacka and Sokobanja), as well ... -
Spatial division multiplexing in nine-core graded index plastic optical fibers
(IOP Science, 2020-07-28)We propose a spatial division multiplexing in a new designed multimode multicore graded index plastic optical fiber with nine cores arranged in an octagonal array. The influence of mode coupling on two-channel spatial ... -
Spatio-temporal variabilty of air temperatures in Central Serbia from 1949 to 2018
(2021-06-20)The paper presents trends for three categories of variables: average annual, average maximum and average minimum air temperatures. Data was provided by the meteorological yearbooks of the Republic Hydrometeorological Service ... -
Speaker Recognition Using Constrained Convolutional Neural Networks in Emotional Speech
(Molecular Diversity Preservation International, 2022-03-16)Speaker recognition is an important classification task, which can be solved using several approaches. Although building a speaker recognition model on a closed set of speakers under neutral speaking conditions is a ... -
SSC Reception over Kappa-Mu Shadowed Fading Channels in the Presence of Multiple Rayleigh Interferers
(Kaunas University of Technology, 2018-06-22)Modelling of complex wireless transmission scenario over fading channels in the presence of multiple co- channel (CCI) interferers will be presented in this paper. Propagation environment will be modelled with general ... -
Statistical causality and extremal measures
(2018-10-21)In this paper we consider the concept of statistical causality in continuous time between ows of information, represented by ltra- tions. Then we relate the given concept of causality to the equivalent change of measure ... -
Statistical causality and local uniqueness for solutions of the martingale problem
(2018-06-15)In this paper we consider the concept of statistical causality between filtrations associated with stopping times, which is based on Granger’s definition of causality. Especially, we consider a generalization of a causality ... -
Statistical causality and measurable separability of σ-algebras
(Science direct, 2021-07-21)In this paper we consider a concept of statistical causality, based on Granger’s definition of causality and analyze the relationships between given causality and the concept of measurable separability of σ-algebras. The ... -
Statistical causality and purely discontinuous local martingales
(Taylor and Francis, 2021-07-21)The statistical concept of causality in continuous time between filtered probability spaces considered in this paper is based on Granger’s definition of causality. The given concept of causality can be connected to the ... -
Statistical causality and separable processes
(Science Direct, 2020-11-21)In this paper we consider the statistical concept for continuous-time stochastic processes, which is based on Granger’s definition of causality. We, also, show that separability is directly related to causality concepts. ... -
Statistical causality, martingale problems and local uniqueness
(Taylor and Francis, 2018-07-21)The paper considers a statistical concept of causality in continuous time in the filtered probability spaces which is based on the Granger’s definition of causality. The given causality concept is then applied to the ... -
Statistics of simultaneous Rice, Nakagami-m and α−μ fadings after SC combining
(2020 19th International Symposium INFOTEH-JAHORINA (INFOTEH), 2020-04-16)This paper presents initial results of a research towards statistical description of diversity-combined wireless signals that propagate over different environments. This kind of situation is encountered when receiver has ... -
A Stochastic Model for Achieving Required Level of Availability Based on the Repair Rate Analysis
(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 ... -
A stochastic model for estimation of repair rate for system operating under performance based logistics
(Polish Maintanace Society, 2018-09-01)Performance Based Logistics (PBL) concept has an aim to improve the system availability and it has been extensively researched in the recent years. These researches showed that inventory level does not impact system ... -
STRUKTURIRANJE EKOLOSKI PRIHVATLJIVIH ELASTOMERNIH KOMPOZITNIH MATERIJALA
(Univerzitet u Kragujevcu, Agronomski fakultet u Čačku, 2018-03-09)Kod recikliranja otpadne gume neophodno je poznavati hemijski sastav otpadnog proizvoda, ukoliko će se on koristiti u recepturama za nove hibridne elastomerne materijale. Kompozitni elastomerni materijali dobijeni od ...