In many particulate industries, one of the major unit operations used is fluidized bed drying process. In industries, which process large amount of solids, continuous dryers play significant role. The multistage fluidized bed dryer is adapted in research to improve the drying efficiency of final product. The moisture content is an important controlled variable in any drying process. In the present

Testing of equality of populations is one of the fundamental problems in Science. In this paper, we propose a new class of nonparametric tests for testing of location parameters of the distribution of populations against restricted alternatives. The asymptotic distribution of the proposed test statistics is derived. In order to attain maximum efficiency of the proposed tests, a general optimal choice

In this paper, the ratio estimators are suggested which perform better than other ratio estimators in the presence of outliers using redescending M-estimator. For this purpose, we adopt the ratio estimators proposed by Kadilar and Cingi (Appl Math Comput 151:893–902, 2004) using robust regression. The proposed ratio estimators are based on redescending M-estimator proposed by Noor-ul-Amin et al. (J

Modification of surface of natural fibers by high-energy gamma irradiation (6 MV) is a competent process for enhancing the adhesion between fiber and matrix. Composites reinforced with natural fiber have gained a prominent place in the field of research and innovation due to the advantages such as low cost, lightweight and environment friendly. We have studied the thermal properties of biodegradable

Electrodeposition method was used for synthesis of CdO thin films. In the experiments, 0.02 M CdCl2 and 0.02 M Cd(NO3)2were used as to be an electrolyte in various volumes. As concentration of Cd(NO3)2increased, film thicknesses and crystallite sizes decreased. Remarkable results were observed in the optical properties of the CdO thin films. As the volume of used Cd(NO3)2increased, the band gap also

In this paper, a modified extreme ranked set sampling (MERSS) scheme is presented. The ratio estimator under the modified scheme is discussed, and expression of mean square error is derived. The performance of the ratio estimator under MERSS is compared with simple random sampling (SRS), ranked set sampling (RSS), median ranked set sampling (MRSS), quartile ranked set sampling (QRSS) and extreme ranked

In this paper, we study the concepts of Wijsman lacunary \({\mathcal{I}}\)-invariant convergence \(\left( {{\mathcal{I}}_{\sigma \theta }^{W} } \right),\) Wijsman lacunary \({\mathcal{I}}^{ *}\)-invariant convergence \(\left( {{\mathcal{I}}_{\sigma \theta }^{ *W} } \right),\) Wijsman \(p\)-strongly lacunary invariant convergence \(\left( {[WN_{\sigma \theta } ]_{p} } \right)\) of sequences of sets

A multilayer perceptron–artificial neural network (MLP-ANN)-based prediction model is proposed to predict the execution time of tasks in cloud environment. Significant input parameters are identified and selected through interpretive structural modeling (ISM) approach. A prediction model is proposed for predicting the task execution time for varying number of inputs. The proposed model is validated

Nanopowders of Eu2Ce2O7 were synthesized via solid-state reactions between Eu2O3 and (NH4)2Ce(NO3)6 raw materials at stoichiometric 1:1 Eu/Ce molar ratio at 800 °C (S1), 900 °C (S2), 1000 °C (S3) for 8 h and 1000 °C for 10 h (S4). The synthesized materials were characterized by powder X-ray diffraction (PXRD) technique. Structural analyses were performed by FullProf program employing profile matching

In the present paper, we study the magnetohydrodynamic stagnation point flow dealing with heat and mass transfer of a micropolar nanofluid influenced with heat generation and viscous dissipation. Nonlinear ordinary differential equations are obtained by applying suitable similarity transformation on the governing partial differential equations. These differential equations have been solved by successive

In the present paper, we study the regression-cum-exponential estimators for estimating ratio of two population means under two different situations. The bias and mean square errors (MSE) are obtained up to the first order of approximation and the conditions for attaining the minimum mean square error of suggested estimators are derived. Theoretical comparisons of suggested estimators with relevant

The present paper deals with the problem of estimating the product of two population means using the information of auxiliary character under double sampling the non-respondents. Two different cases are considered for suggesting the estimators to estimate the product of two population means. The bias and mean square errors are obtained up to the first order of approximation, and the conditions for

In this article, a new version of extended F-expansion method is suggested. A multiple Jacobi elliptic functions are presented in the solution function. We achieve analytical solutions of the (1 + 1)-dimensional dispersive long wave (DLW) equation and (2 + 1)-dimensional Kadomtsev–Petviashvili (KP) equation using the new version of extended F-expansion method. Then, the single and the combined non-degenerative

We have considered the posterior estimation of two-component mixture of Weibull distribution under type-I right censoring. As the resultant Bayes estimators and posterior risks are not in close form, we have proposed Lindley’s approximation and importance sampling for the approximate solutions. The performance of the approximation methods and estimators under study has been compared using simulated

In this work, a new computational approach is proposed to solve the linear Fredholm integro-differential-difference equations with variable coefficients under the mixed conditions. This method yields the solution of the governing equation with the form of a linear combination of a special kind of basis functions. Those unknown coefficients of the solution of the given problem are determined by solving

This investigation is concerned with the availability prediction of a non-Markovian model for the multi-component complex repairable manufacturing system. The system is prone to multiple types of failures, either due to an individual or common cause failure. The system can also fail catastrophically which may occur due to the incorrect start of the system or due to some errors by an untrained and inexperienced

In this work, we present two approaches for simulation of fourth-order parabolic partial differential equations. In the first method, cubic B-spline quasi-interpolation is used to approximate the spatial derivative of the dependent variable and forward difference to approximate the time derivative. In the second method, we have used modified cubic B-spline functions-based differential quadrature method

In the present study, MASW tests have been performed at thirteen locations of Varanasi city to measure shear wave (SW) velocity. Varanasi city (Uttar Pradesh, India) is under high seismic risk as it is situated in Indo-Gangetic plain, which falls under seismically active Himalayan belt. Measured SW velocity from MASW test was used to estimate \(V_{\text{s}}^{30}\) for site classification (IBC 2009)

In this paper, we prove the existence of solution of the self-similar equations representing the swirling flow of an electrically conducting viscous fluid near an infinite rough rotating disk. The fluid is subjected to an external uniform magnetic field perpendicular to the plane of the disk. Numerical solutions of the resulting system of nonlinear equations are also obtained over the entire range

In this paper, we study the generalized Kropina change of generalized m-th root metrics. We find the conditions under which the generalized Kropina change of generalized m-th root metrics to be locally projectively flat and locally dually flat. Further, we find the conditions under which such transformed metric of constant flag curvature reduces to a flat Finsler metric.

In this study, an attempt has been made to investigate the wear characteristics of aluminium (Al) 6063 alloy reinforced with Al2O3/SiC/Al2O3 + SiC particles of double particle size (DPS) and triple particle size (TPS). The hybrid Al-metal matrix composites (MMC’s) were prepared by using a synergistic combination of fused deposition modeling and V-process assisted stir casting and wear performance was

In this paper, we develop a class of methods based on exponential spline at off-step points for the solution of the nonlinear and linear fourth-order boundary value problems (BVPs). Spline relations and boundary equations are developed, and the methods of order two, four and six have been obtained. Convergence analysis of the method is discussed. Numerical examples for linear and nonlinear BVPs are

The first general Zagreb index \(M^{\alpha }_{1}(G)\) of a graph G is equal to the sum of the \(\alpha \)th powers of the vertex degrees of G. For \(\alpha \ge 0\) and \(k \ge 1\), we obtain the lower and upper bounds for \(M^{\alpha }_{1}(G)\) and \(M^{\alpha }_{1}(L(G))\) in terms of order, size, minimum/maximum vertex degrees and minimal non-pendant vertex degree using some classical inequalities

Another proof of a supercongruence conjecture of Sun has been given in this paper, using tools of Gaussian hypergeometric series and the p-adic \(\Gamma\)-function together with a combinatorial identity.

In this paper, we present an efficient quartile paired double ranked set sampling (QPDRSS) scheme to estimate the population mean. QPDRSS provides an unbiased improved population mean estimator when the distribution is symmetric and bears negligible biasness for non-symmetric distribution. The performance of the proposed mean estimator is compared to its competitors in simple random sampling, double

A large number of the path key establishment schemes regard same probability of the node capture attack for each node in the wireless sensor networks. However, in certain critical applications this statement may not be right making such schemes less practical for many real-world applications like border surveillance and disaster management. In this paper, an attack matrix (AM) is designed to calculate

The cubic intuitionistic implicative ideals in BCK-algebras and the relationship between a cubic intuitionistic subalgebra, a cubic intuitionistic ideal and a cubic intuitionistic implicative ideal are discussed. Conditions for a cubic intuitionistic ideal to be a cubic intuitionistic implicative ideal are provided. Characterizations of a cubic intuitionistic implicative ideal are considered. The cubic

The thermal and mass boundary layer flow of a time-dependent isochoric viscous fluid over an oscillating cylinder entrenched in a porous medium is investigated numerically. The governing problem contains a set of coupled nonlinear partial differential equations with significant initial and boundary conditions and are solved using an implicit finite difference scheme, namely Crank–Nicholson method.

In this paper, we have considered all the possible continuous subgroups of the Lie group \(SL(2;{\mathbb {R}})\) (upto conjugacy) from dimension zero to three. For each of the classification, we have defined group action on the same line as Kisil. Möbius transformation has been taken as the corresponding action. This action is defined on the homogeneous spaces of various dimensions generated by the

Abstract Attempts have been made to propose a software reliability growth model (SRGM) based on non-homogeneous Poisson process for NVP system. The proposed model concerns the combined effect of increasing fault detection rate and fault removal efficiency under imperfect debugging. Moreover, a cost model has been developed. Also, an optimal release policy based on the proposed cost model and the number

Abstract Transportation plays a major role in the industrial and corporate world and so as uncertainty. Several ways have been given in the literature to deal with the imprecision originated from various uncontrollable factors and conditions. In this paper, we consider transportation problems with uncertainty in transportation costs and propose an alternate algorithm to find its initial basic feasible

Abstract Lorentz hypersurfaces \(M_{1}^{4}\) is studied in \(E_{1}^{5}\) with non-diagonal shape operators having characteristic equation \((y-\lambda )^2(y-\lambda _3)(y-\lambda _4)\) or \((y-\lambda )^3(y-\lambda _4)\) or \(((y-\lambda )^2+\mu ^2)(y-\lambda _3)(y-\lambda _4)\). It is proved that if the mean curvature vector field \(\vec {H}\) of Lorentz hypersurfaces \(M_{1}^{4}\) in \(E_{1}^{5}\)

Abstract Carbon nanotubes are cylindrical carbon molecules which offer promising applications in nanotechnology due to high thermal conductivity. These carbon allotropes can be utilized as additives in various structural materials. Recent development in numerous technological and industrial sectors such as chemical bonding process, optics, and microelectronics requires a strong need to develop such

Abstract Attempts have been made to introduce generalization of structured manifolds as the most general Riemannian metric g associated with an endomorphism F and initiate a study of their semi-invariant submanifolds. These submanifolds are generalizations of CR submanifolds of almost complex geometry and semi-invariant submanifolds of several interesting geometries (almost product, almost contact

Abstract The geometries, electronic and magnetic properties of Bi2Cn (n = 1–16) clusters have been systematically studied using density functional theory. The results show that Bi2Cn (n = 1–16) clusters prefer linear structures with the two Bi atoms at the two ends of a linear Cn cluster. We predict that the magic number of Bi2Cn (n = 1–16) clusters should be 4, 6, 8, 11, 13, and 15. According to the

Abstract The paper discusses a hypergraph-based polynomial time algorithm for constructing a DNA sequence corresponding to a given spectrum with no errors. The presence of n-ary relations in the expression of DNA sequencing led to the advent of hypergraphs in DNA sequencing. An efficient algorithm, unimodular hypergraph (UMHG), has been proposed for constructing unimodular hypergraph that represents

Abstract Attempts have been made to introduce a new class of algebras \(K_n\), which we define as generalized knot symmetric algebras. The reason for this name is that these new algebras have a basis consisting of knot diagrams. The multiplication of two of these graphs turns \(K_n\) into an associative. The semi-simplicity of these algebras over \(K_n\) has been proved by making use of conditional

Composite thin films of polyaniline (PAN)/ZnO are synthesized via electropolymerization (ECP) process in acidic medium on ITO (working electrode) with platinum mesh as a counter electrode and Ag/AgCl as a reference electrode. Acidic medium helps in polymerization and enhances the crystallinity of PAN. PAN films that are obtained in the presence of sulfuric acid give partial crystallinity in its high

Mobile IPv6 (MIPv6) is extended to Hierarchical MIPv6 (HMIPv6) by introducing a Mobile Anchor Point (MAP) between home agent (HA) and the mobile node’s (MN’s) temporary location. The MAP acts as a coordinator of the MN and reduces signaling cost for handoff management. It also reduces handoff latency suffered by MN. However, the MAP in the HMIPv6 architecture is a single point of failure, as all packets

In this paper, a fully implicit finite difference method is presented to solve the generalized equal width equation. This implicit method allows to handle any values of p. Since the equation is nonlinear the scheme leads to a system of nonlinear equations. At each time step, Newton’s method is used to solve this nonlinear system. The linear stability analysis of the proposed method is investigated

In this communication, one novel attempt has been made towards the design of minimum-phase finite impulse response (FIR) filter using one evolutionary computation technique, named differential evolution (DE) algorithm. Mean square error (MSE) between the frequency samples of the ideal filter and the designed filter in the pass-band and stop-band region and the minimum average error (MAE) between the

An experiment was conducted to investigate the heat transfer characteristics and friction factor characteristics of a concentric tube fitted with triangular-cut twisted tape (TCTT) insert with a twist ratio Y of 5.4 and depth of triangular cut of 1.2 cm, which were studied for laminar flow. This investigation also is used to find the heat transfer coefficient, Nusselt number and Reynolds number. The

Data analytics in granular computing framework is considered for several mining applications, such as in video analysis, bioinformatics and online social networks which have all the characteristics of Big data. The role of granulation, lower approximation and r–f information measure is exhibited. While the lower approximation over a video sequence signifies the object model for unsupervised tracking

The oxidovanadium(IV) complex of composition [VO(acac)(SHA)] (where acac = [CH3COCHCOCH3−]); (SHA = [2-OHC6H4C(O)NHO−]) has been synthesized by the reaction of [VO(acac)2] with salicylhydroxamic acid (SH2A) in methanol + tetrahydrofuran and characterized by physicochemical and various spectral studies. The FTIR spectra indicated that salicylhydroxamate ion is bonded through carbonyl and hydroxamic

In this article, we report a combined concept of linearties and nonlinearties of homotopy perturbation method using Laplace transform with He’s polynomials for solving complex delay differential equations which have a versatile application in signal processing, digital image processing, physics and applied sciences. Some examples are given to illustrate the ability and reliability of the proposed method

The present study presents the convective flow of an electrically conducting fluid in vertical microannulus formed by two concentric cylinders in the presence of imposed radial magnetic field and induced magnetic field. The governing equations of the motion are a set of simultaneous ordinary differential equations, and their exact solutions in dimensionless form have been obtained for the velocity

The present paper describes the study of semilocal convergence of seventh-order iterative method, in Banach spaces for solving nonlinear equations. The existence and uniqueness results have been verified followed by error bounds. It is also discussed that the considered scheme has not only the higher convergence order but also improved computational efficiency, which is the significant issue when dealing

The efficiency of ozonation for the removal of color from textile azo dye solution containing Acid Red 14 by ozone was studied. The effect of ozonation time on the decolorization of azo dye has been examined, and the results were analyzed in terms of color removal efficiency. The high color removal efficiency of 93% was obtained after 25 min of ozonation. The effect of buffer solution on the ozonation

In this paper, a simple survey technique is applied to estimate the population proportion π of a sensitive trait, in addition to T, the probability that a respondent truthfully states that he or she bears a sensitive character when questioned directly and examined its properties. It has been found that the suggested model is efficient. Numerical illustrations are presented to support the theoretical

In this paper, an attempt has been made to reduce the negative effect of random non-response in the estimation procedure of population variance in two-phase sampling. A difference-type imputation method has been considered to reduce the wrong impact of random non-response in the two-phase sampling. To build efficient estimation strategies, information on two auxiliary characters has been used in the

In this paper, we determine a rotational surface by means of generalized quaternions and study this flat rotational surface with pointwise 1-type Gauss map in four-dimensional generalized space \(\mathbb {E}_{\alpha \beta }^{4}\). Also, for some special cases of \(\alpha \) and \(\beta \), we obtain the characterizations of flat rotational surfaces with pointwise 1-type Gauss map in four-dimensional

In this paper, we have obtained some conditions under which the boundary of the numerical range of tridiagonal matrices has no point spectrum. As a consequence of these results, the boundary of the numerical range of these tridiagonal matrices may be non-round only at the points where it touches the essential spectrum.

Redundant gates of 4-2 compressor (hereafter, it is referred as 42C) has been removed by simplification of compressor output Boolean expression, that results in power consumption minimization. Further, the proposed design is implemented in full swing gate diffusion input logic, a low-power design technique with minimum transistor count. To evaluate the performance of existing and proposed compressor

The lower bound limit analysis technique in combination with the finite elements is implemented to generate the stability numbers for an unsupported vertical long trench in a sloping ground, associated with the critical state of shear failure in a cohesive-frictional soil medium. The computational results are derived for various combinations of normalized excavation depth, friction angle of soil and

The paper proposes a classification algorithm based on support tensor machines which finds the maximum margin between the tensor spaces. The proposed algorithm has been deployed to classify erythemato-squamous diseases (ESDs) with the help of its features. Features are derived from the skin lesion images of ESDs, and it has been represented as second-order tensors, i.e., \( \varvec{X} \in \varvec{

The objective of this article is to present a modified analytical scheme, namely homotopy analysis transform method (HATM), to investigate the exothermic reactions model in the presence of constant heat source and porous medium. The heat flow patterns profiles are required for the heat transfer in each type of the thermal insulation. The driving force model to analyze the temperature gradient is studied

An analysis has been carried out to study the effect of variable fluid properties on MHD mixed convection flow of second-grade fluid flowing along an infinite stretching sheet with convective boundary condition. The fluid is placed on an infinite heated elastic surface with linear stretching rate and a vertical velocity component due to suction at the sheet is considered. The combined effects of inertia

The hydrogeochemical study on glacial meltwater gives important information about the quality of meltwater and weathering processes controlling dissolved ions chemistry in the glacierized area. Anionic abundance in the Manimahesh Glacier meltwater shows a trend of HCO3− > SO42− > Cl− = NO3−, whereas cationic abundance in the meltwater shows a trend of Ca2+ > Mg2+ > K+ > Na+. On the basis of high equivalent

The main objective of the present study is to analyze a single-unit system under the concept of preventive maintenance, inspection, degradation and replacement. For this purpose, a stochastic model of single unit has been developed. The repair and preventive maintenance of the system are affected by abnormal environmental conditions, while replacement and operative original/degraded unit remain unaffected

The efficient k-distance domination number \(\gamma ^{k}_{e}(G)\) is the minimum among the cardinalities of efficient k-distance dominating sets of G. Upper bound in terms of order and maximum degree of an independent set S of vertices in a graph \(G=(V,E)\) called an efficient k-distance dominating set if every vertex in \(V-S\) be distance k from exactly one vertex in S has been presented. Sufficient