Direction-of-arrival (DOA) estimation is a key area of sensor array processing which is encountered in many important engineering applications. Although various studies have focused on the uniform hexagonal array for direction finding, there is a scanty use of the uniform hexago...
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Research Article10.9734/jamcs/2019/v32i630161
This investigation is concerned with analytically determining the dynamic buckling load of an imperfect cubic-quintic nonlinear elastic model structure struck by an explicitly time-dependent but slowly varying load that is continuously decreasing in magnitude. A multi-timing regu...
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Research Article10.9734/jamcs/2019/v32i630160
Mycobacterium tuberculosis is the causative agent of Tuberculosis in humans [1,2]. A mathematical model that explains the transmission of Tuberculosis is developed. The model consists of four compartments; the susceptible humans, the infectious humans, the latently infected human...
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Research Article10.9734/jamcs/2019/v32i530159
This paper deals with the construction of l-stable implicit one-block methods for the solution of stiff initial value problems. The constructions are done using three different multi-block methods. The first multi-block method is composed using Generalized Backward Differentiatio...
Open access
Research Article10.9734/jamcs/2019/v32i530158
This paper proposes a method for constructing a predictive estimator for logistic regression. We make a provisional assumption that the predictive estimator is given by multiplying the maximum likelihood estimators by constants, which are estimated using a parametric bootstrap me...
Open access
Research Article10.9734/jamcs/2019/v32i530154
The Gompertz model is one of the earliest most influential mortality models. The model dominated for more than 100 years and is still one of the most important models in the field of mortality. Even though the model was designed exclusively for human mortality, it has found its a...
Open access
Research Article10.9734/jamcs/2019/v32i530155
This paper investigates a new approach called Homotopy Analysis Decomposition Method (HADM) for solving nonlinear differential equations, the method was developed by incorporating Adomian polynomial into Homotopy Analysis Method. The Adomian polynomial was used to decompose the n...
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Research Article10.9734/jamcs/2019/v32i530157
According to the relationship between the speed of vehicle and the amber light, we establish the differential equation model of the amber light duration. And based on the relevant conditions given in the title, three differential equation models of amber light duration under diff...
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Research Article10.9734/jamcs/2019/v32i430153
Aims/ Objectives: This paper presents a one step hybrid numerical scheme with one off grid points for solving directly the general second order initial value problems. Study Design: Section one which is the introduction, give a brief about initial value problem. In...
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Research Article10.9734/jamcs/2019/v32i430152
Fifth order over-damp nonlinear differential systems can be used to describe many engineering problems and physical phenomena occur in the nature. In this article, the Krylov-Bogoliubov-Mitropolskii (KBM) method has been extended to investigate the solution of a certain fifth ord...
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Research Article10.9734/jamcs/2019/v32i430151
In this article, A Variation of -Expansion Method and -Expansion Method have been applied to find the traveling wave solutions of the (3+1)-dimensional Zakhrov-Kuznetsov (ZK) equation, the (3+1)-dimensional Potential-YTSF Equation and the (3+1)-dimensional generalized Shallow wat...
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Research Article10.9734/jamcs/2019/v32i430149
The development of higher education is an extremely important issue. It is the source of the country's technological innovation and the realization of innovation and development, especially in China, where higher education is still at an exploratory stage. Aiming at the shortcomi...
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Research Article10.9734/jamcs/2019/v32i430150
This paper proposes a new sensor-array geometry (the 2-circle concentric array geometry), that maximizes the array's spatial aperture mainly for bivariate azimuth-polar resolution of direction-of-arrival estimation problem. The proposed geometry provides almost invariant azimuth...
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Research Article10.9734/jamcs/2019/v32i330148
The paper deals with very weak solutions u to boundary value problems of the nonhomogeneous p-harmonic equation. We show that, any very weak solution u to the boundary value problem is integrable provided that r is sufficiently close to p.
Open access
Research Article10.9734/jamcs/2019/v32i330147
An -bit comparator is a celebrated combinational circuit that compares two -bit inputs and and produces three orthonormal outputs: G (indicating that is strictly greater than ), E (indicating that and are equal or equivalent), and L (indicating that is strictly less than )....
Open access
Research Article10.9734/jamcs/2019/v32i330146