المنشورات و المؤلفات
يعد هذا الكتاب أساساً لعلم الإحصاء والاحتمالات وأيضاً مدخلاً للاستدلال الإحصائي، كما يعد مرجعاً مهماً لكل دارسي الإحصاء بجميع تخصصاتهم العلمية والهندسية حيث يحتوي هذا الكتاب على المبادئ الأساسية لعلم الإحصاء وكيفية وصف وعرض البيانات الإحصائية...
We solve the vertex p-centre problem optimally using an exact method that considers both upper and lower bounds as part of its search engine. Tight upper bounds are generated quickly via an efficient three-level heuristic, which are then used to...
This paper is concerned with the optimal control of a production inventory system with time-varying deteriorating items. It is assumed that the deterioration rate follows the two parameters generalized exponential distribution. The continuous review...
In this paper we will discuss the stochastic analysis of a three state semi-Markov reliability model. Maximum likelihood procedure will be used to obtain the estimators of the parameters included in this reliability model. Based on the assumption...
We present an efficient metaheuristic based on Simulated Annealing
for solving the p-Median problem. These ideas are tested on the well
known OR-Lib set of problems with excellent results
This paper studies the chaos and control of a continuous time food
chain model which contains one prey, one predator and super-predator.
We show that this system can be asymptotically stabilized using a nonlinear
feedback control inputs. The...
Abstract
This paper presents estimations of the parameters included in linear exponential distributions, based on grouped and censored data. The methods of maximum likelihood, regression and Bayes are discussed. The maximum likelihood method does...
This paper presents estimations of the generalized Rayleigh distribution model based
on grouped and censored data. The maximum likelihood method is used to derive
point and asymptotic con¯dence estimates of the unknown parameters. The results...
Abstract
A new class of bivariate Gompertz distributions is presented in this paper. The model introduced here is of Marshall-Olkin type. The used procedure is based on a latent random variable with exponential dis- tribution. A mixture of the...
Abstract
This paper discusses the reliability equivalences of a parallel- series system. It is assumed that the system components are independent and identical. Each has a constant failure rate. We assumed three difierent method to improve the...
Abstract
This paper investigates the queueing process of a bulk service queueing system under Bernoulli schedule. It also generalizes some known scenarios concerning the choice of service and re-service types. The queueing process is studied both in...
Abstract
This paper is concerned with the optimal control of a production inventory system with deteriorating items. It is assumed that the deterioration rate follows the two-parameter Weibull distribution. The continuous-review and periodic-review...
Abstract
Enhancements to two exact algorithms from the literature to solve the vertex P-center problem are proposed. In the first approach modifications of some steps are introduced to reduce the number of ILP iterations needed to find the optimal...