The majority of current security architectures for grid systems use public key infrastructure (PKI) to authenticate identities of grid members and to secure resource allocation to these members. Identity-based secret public keys have some attractive properties which seem to align well with the demands of grid computing. In this Paper, we proposed identity-based secret public keys. Our new identity-based approach allows secret public keys to be constructed in a very natural way using arbitrary random strings, eliminating the structure found in, for example, RSA or Diffie-Hellman keys. We examine identity-based secret public key protocols and give informal security analyses which show that they may well be secure against online password guessing and other attacks. More importantly, we present an identity-based secret public key version of the standard TLS protocol. Our new protocol allows passwords to be tied directly to the establishment of secure TLS channels.

The goal of this paper is to present an application of variational Monte Carlo method for solving one dimensional harmonic oscillator problem.

In this paper, we solve nonlinear system of Fredholm-Volterra integro-differential equations by using discrete collocation method. These types of systems of integral equations are important and they can be used in engineering and some of the applied sciences such as population dynamics, reaction-diffusion in small cells and models of epidemic diffusion. Also these equations with convolution kernel can be solved by discrete collocation method. By the above mentioned method we approximate solution of equation by no smooth piecewise polynomials, for validity and ability the method we solve some examples with high accuracy.

A Single item EOQ model is modeled using crisp arithmetic approach in decision making process with demand unit cost and dynamic setup cost varies with the quantity produced/Purchased. This paper considers the modification of objective function and storage area in the presence of estimated parameters. The model is developed for the problem by employing NLP modeling approaches over an infinite planning horizon. It incorporates all concepts of crisp arithmetic approach, the quantity ordered, the demand per unit and compares with other model that of the crisp would optimal ordering policy of the problem over an infinite time horizon is also suggested. Investigation of the properties of an optimal solution allows developing an algorithm for obtaining solution through LINGO 13.0 version whose validity is illustrated through an example problem. Sensitivity analysis of the optimal solution is also studied with respect to changes in different parameter values and to draw managerial insights.

This paper generalizes a method of determining the objective value range of quadratic programming problems to a general class of interval convex programming ones, where all coefficients in objective function and constraints are interval numbers. The upper bound and lower bound of the objective values of the interval quadratic program is calculated by formulating a pair of two-level mathematical programs. Based on the duality theorem and by applying the variable transformation technique, the pair of two-level mathematical programs is transformed into conventional one-level convex programming problem. Solving the pair of convex programs produces the interval of the objective values of the problem. Numerical results confirms the procedure of the presented approach.

This paper presents a numerical method for solving Abel’s integral equation as singular Volterra integral equations. In the proposed method, the functions in Abel’s integral equation are approximated based on Bernstein polynomials (BPs) and therefore, the solving of Abel’s integral equation is reduced to the solving of linear algebraic equations. Illustrative examples are included to demonstrate the validity and applicability of the technique.

Entrepreneurship is one of the important resources in all human societies regarded as one of the most important assets for each country. In todays complicated world those organizations are more important that are having human resources withrich intelligence. This study probes to find the relationship between organizational intelligence and entrepreneurship from the view point of educational managers of Mazandaran University. To this purpose a number of 202 managers were selected through census. This study is descriptive- correlational in nature and the instruments used for data collection are Albercht’s Organizational Intelligence questionnaire and Robbins’ entrepreneurship questionnaire. Data was analyzed through Pearson Correlation Coefficient, stepwise regression and structural equations were used to find out the relationship between variables. Results of regression analysis showed alignment and congruence had the most direct effect on entrepreneurship,( β = 0.39, P <0.01) and after that heart and appetite for change come. Other variables also have effects on entrepreneurship indirectly and through these three variables. The most indirect effect of variables on dependent variable is pertinent to the performance pressure ( β = 0.28) .The analytical model developed in this study for the relationship between variables shows high correlation between organizational intelligence and entrepreneurship.

A numerical method is proposed to solve linear fredholm fuzzy integral equations(LFFIE). The proposed method in this paper is based on concept of the parametric form of fuzzy numbers and Sinc wavelet. By using the parametric form of fuzzy numbers linear fredholm fuzzy integral equations have been converted into a system of fredholm integral equations in the crisp form, and Sinc approach this problem reduced to solving algebraic equations. The efficiency of the proposed approach is demonstrated by numerical examples.

In this paper, we prove the existence of positive weak solution for the nonlinear elliptic system \[ \begin{cases} -\Delta_p u=\lambda_1u^a+\mu_1v^b,\,\,\,\,\, x\in\Omega,\\ -\Delta_q v=\lambda_2u^c+\mu_2v^d,\,\,\,\,\, x\in\Omega,\\ u=0=v,\,\,\,\,\, x\in \partial \Omega. \end{cases} \] where \(\Delta_sz=div(|\nabla z|^{s-2}\nabla z), s>1, \lambda_1, \lambda_2, \mu_1\) and \(\mu_2\) are positive parameters, and \(\Omega\) is a bounded domain in \(R^N, a + c < p - 1\) and \(b + d < q - 1\). We also discuss a multiplicity result when \(0 < \lambda_1, \lambda_2, \mu_1, \mu_2<\lambda^* \) for some \(\lambda^* \). We obtain our results via the method of sub - and super solutions.