In this paper we discuss the problem of designing a key predistribution scheme (KPS). We present a composite deterministic KPS based on “multiple key spaces” construction principle. As building blocks for it we take a KPS generated by affine planes and the well-known Blom’s scheme. The analysis of the resulting scheme shows its high global connectivity and resilience against nodes’ compromise. ...

the notions of quasi-prime submodules and developed  zariski topology was introduced by the present authors in cite{ah10}. in this paper we use these notions to define a scheme. for an $r$-module $m$, let $x:={qin qspec(m) mid (q:_r m)inspec(r)}$. it is proved that $(x, mathcal{o}_x)$ is a locally ringed space. we study the morphism of locally ringed spaces induced by $r$-homomorphism $mrightar...

In this paper, a numerical efficient method is proposed for the solution of time fractional mobile/immobile equation. The fractional derivative of equation is described in the Caputo sense. The proposed method is based on a finite difference scheme in time and Legendre spectral method in space. In this approach the time fractional derivative of mentioned equation is approximated by a scheme of ord...

In this paper I develop a Proxy Means Tests (PMT) model and examine several targeting lines based on 2008 household survey data to identify beneficiaries for a targeting subsidy scheme in Iran. Based on the findings of this study, setting a cut-off percentile of 40% is expected to provide compensation for almost 70 percent of the poorest households. This will result in the highest accuracy main...

In this study, an in-house multi-dimensional code has been developed which simulates the combustion of n-heptane in a Homogeneous Charge Compression Ignition (HCCI) engine. It couples the flow field computations with detailed chemical kinetic scheme which involves the multi-reactions equations. A chemical kinetic scheme solver has been developed and coupled for solving the chemical reactions an...

In this paper we propose a novel high resolution scheme for scalar nonlinear hyperbolic conservation laws. The aim of high resolution schemes is to provide at least second order accuracy in smooth regions and produce sharp solutions near the discontinuities. We prove that the proposed scheme that is derived by utilizing an appropriate flux limiter is nonlinear stable in the sense of total varia...

This paper addresses the design of an observer-based fault diagnosis scheme, which is applied to some of the sensors and actuators of a wind turbine benchmark model. The methodology is based on a modified sliding mode observer (SMO) that allows accurate reconstruction of multiple sensor or actuator faults occurring simultaneously. The faults are reconstructed using the equivalent output err...

The study investigated the levels of awareness and use of agricultural insurance scheme in Kogi State of Nigeria. A total of 240 respondents from eight communities were selected through a multistage random sampling technique. Data collected through structured questionnaire were analyzed using descriptive statistic, percentages and sigma scoring model. The results revealed that farmers in the St...