مرور Volume 13, Issue 1 بر اساس عنوان
در حال نمایش موارد 173  192 از 324

Mathematical analysis wavelets characteristics and their applications
(Semnan University, 20220101)Wavelets are now perceived as a groundbreaking new mathematical apparatus in signal and picture handling, time arrangement analysis, geophysics, guess hypothesis, and numerous various zones. Wavelet analysis has been an ...

Mathematical modeling of diffusion problem
(Semnan University, 20220101)This work aims to introduce a numerical approximation procedure based on an operational matrix of block pulse functions, which is employed in solving integralalgebraic equations arising from the diffusion model. It ...

Mathematical optimization modeling for estimating the incidence of clinical diseases
(Semnan University, 20220101)The notion that infectious disease transmission and dissemination are governed by rules that may be expressed mathematically is not new. In fact, the nonlinear dynamics of infectious illness transmission were only fully ...

Maximum likelihood for fuzzy pure spatial autoregressive model
(Semnan University, 20220101)This paper deals with the study about the formulation of spatial regression models for independent and dependent fuzzy variables, while the parameters crisp values, which are estimated by the maximum likelihood method. In ...

Measuring the efficiency of three methods for estimating the parameters and reliability of a twoparameter weighted exponential distribution
(Semnan University, 20220101)The purpose of this research is to investigate a weighted exponential distribution with two parameters [shape \& scale], including calculating the cumulative distribution and reliability functions, as well as estimating ...

Medical data encryption in private cloud based on MAR
(Semnan University, 20220101)It's easy to exchange files, folders, and emails in a private network with the aid of a private cloud (PriCld). However, the most common attack with this sort of system is the guessing of the password. The unencrypted ...

A meshfree radial basis function method for nonlinear phifour equation
(Semnan University, 20220101)Radial basis function pseudospectral method is applied to obtain the solution for nonlinear Phifour time dependant equation with nonhomogeneous initial and boundary conditions. In this method, the efficient pseudospectral ...

Modeling causal and interfering conditions in corruption from auditing perspective using Grounded theory
(Semnan University, 20220101)This study aimed to identify and model the causal and interfering conditions against corruption by auditing firms. This research is applied objectively and it is among the studies with mixed methods. In the qualitative ...

Modelling the influence of prey switching and optimal foraging on the control of banana weevil Cosmopolites Sordidus(Germar)
(Semnan University, 20220101)A mathematical model for the control of the banana weevil Cosmopolites Sordidus (Germar) by predatory ant species is formulated and analyzed. The model incorporates predator switching to a nondynamic alternative food ...

A modification of the CayleyPurser algorithm
(Semnan University, 20220101)Cayley Purser Algorithm is a public key algorithm invited by Sarah Flannery in 1998. The algorithm of CayleyPurser is much faster than some public key methods like RSA but the problem of it is that it can be easily broken ...

Multiclass LDA classifier and CNN feature extraction for student performance analysis during Covid19 pandemic
(Semnan University, 20220101)In our modern world, education is essential for developing high moral values and excellence in individuals. But the spread of Covid19 widely affects the student's education, the majority of students have continued their ...

Multifunctional control design for voltage control, frequency and active microgrid power
(Semnan University, 20220101)Increasing the number of microgrids will challenge centralized control and telecommunications control structures. Multifunctional systems are a good alternative to decentralized control and management structures. The focus ...

nJordan *Derivations in Frechet locally C*algebras
(Semnan University, 20220101)Using the fixed point method, we prove the HyersUlam stability and the superstability of $n$Jordan $*$derivations in Fr'echet locally $C^*$algebras for the following generalized Jensentype functional equation$$ ...

Near fixed point, near fixed interval circle and their equivalence classes in a $b$interval metric space
(Semnan University, 20220101)We introduce a novel distance structure called a b−interval metric space to generalize and extend metric interval space. Also, we demonstrate that the collection of open balls, which forms a basis of a b−interval metric ...

Nearly locally hollow modules
(Semnan University, 20220101)Let $R$ be a commutative ring with identity and let $M$ be an Rmodule. This study presents the nearly locally hollow module that's a strong form of a hollow module. We present that an $R$module $M$ is nearly locally ...

A new [0, 1] truncated inverse Weibull rayleigh distribution properties with application to COVID19
(Semnan University, 20220101)In this paper, we introduce a new 2 parameters family of distributions named [0,1] Truncated Inverse Weibull  $G$ family ([0,1] TIWG) family, to generate new types of continues distributions. A special model namely, ...

A new bond portfolio optimization model as twostage stochastic programming problems in U.S. market
(Semnan University, 20220101)We formulate a new bond portfolio optimization model as a twostage stochastic programming problem in which a decision maker can optimize the cost of bond portfolio selection while deciding which bonds to sell, which bonds ...

New bound for edge spectral radius and edge energy of graphs
(Semnan University, 20220101)Let $ X(V,E) $ be a simple graph with $ n $ vertices and $ m $ edges without isolated vertices. Denote by $ B = (b_{ij})_{mtimes m} $ the edge adjacency matrix of $ X $. Eigenvalues of the matrix $ B $, $mu_1, mu_2, cdots, ...

New fixed point theorems in midconvex subgroups of abelian Banach groups
(Semnan University, 20220101)In this paper, using continuous, injective, and sequentially convergent mappings on a group, new generalizations of Kannan and Chatterjea's fixed points in Banach groups are presented. we generalize contractions with ...

A new Jackknifing ridge estimator for logistic regression model
(Semnan University, 20220101)In reducing the effects of collinearity, the ridge estimator (RE) has been consistently demonstrated to be an attractive shrinkage method. In application, when the response variable is binary data, the logistic regression ...