Journal of Al-Qadisiyah for Computer Science and Mathematics

Many concerned and pay attention to when the term reliability or estimate the reliability of existing product , we will examine how to improve the reliability of products and processes through the use of designed experiments, in such experiments, each unit is tested up to fail or are still working at the end of the experiment. If it fails to respond will be the time of failure .reliability and design of experiments (DOE) different types of threads. Reliability is character the product , and design of experiments is the advantage of access to knowledge and organization , but they share a midwife application on a range of product designs , and are also the most effective when used together as tools by professionals in disciplines such as design engineering and process engineering and even product purchase marketing . We have addressed in this paper combine design experiments and reliability to improve product . Using design of experiments is to know and determine the level of the factors affecting the reliability it is certain that there are specific factors affecting theReliability . In the theoretical side touched on some basic concepts about the design of experiments and reliability and evolve overlapping and the relationship between them , It was possible to derive the greatest natural function of the logarithmic as algorithm to program (-R-) used to estimate model parameters and factors affecting the time of the failure (product life) through likelihood ratio test , The practical side of the data recorded for the time of the failure of the two types of tires after exposure to various Quicken and sample number (51) Show from the lab records Tires Babylon in the province of Najaf to see the estimated values of the parameters ( β_0 ، β_1 ، β_2 ، σ ( and the limits of confidence and ratio test possible main factor (B & A) and statistical significance of this ratio and the level of significance (5% and 1%). have been identified variance for every the ability of a parameter [ Var((β ) ̂_0 ) ، Var((β ) ̂_1 ) ، Var((β ) ̂_2 ) ، Var((σ^' ) ̂ )] Add to estimate the covariance between each two parameters , through a matrix calculation Fisher (F) and (F^(-1)) depending on the logarithmic function of the possibility of the greatest .

The main goal of this work is to find numerical value of a double integral where the integrand is continuous, by derivation composite rules and its correction terms. Depending on these terms we improve these values by using Romberg acceleration, after that we used these rules to find the values of integral with continuous integrands on the region of integral and we compare these results with composite rule of trapezoidal on the two dimensions (exterior and interior), the resulting values are better if accuracy and number of sub-intervals are taken in account.

In this paper, a new definition of fuzzy topological vector space was introduced. this kind of fuzzy topological vector spaces have peculiarity that differ from the other kinds. An idea of this definition was dependence on fuzzy topology that define by science of Michálek. Some theorems about this subject was proved.

In this paper we introduce new types of intuitionistic regular generalized closed set intuitionistic generalized pre regular -closed set,intuitionistic weakly generalized closed set , intuitionistic strongly generalized semi closed set,intuitionistic weakly closed set ,intuitionistic semi weakly generalized closed set,intuitionistic pre weakly generalized closed set, intuitionistic regular-weakly generalized closed set,intuitionistic regular w-closed set , intuitionistic regular generalized α-closed set and study the relations among them .Through the seconcepts we introduce a new class of mapping of intuitionistic generalized pre regular -closed map intuitionistic , weakly generalized closed map, intuitionistic strongly generalized semi closed map,intuitionistic weakly closed map ,intuitionistic semi weakly generalized closed map intuitionistic pre weakly generalized closed map, intuitionistic regular weakly generalized closed map,intuitionistic regular w-closed map , strongly Irgα-continuous ,Irgα-irresolute map, Irgα-continuous map .We study and investigate some characterizations and relationships among them .

In this paper we studied the nonlinear elastic beams equation on elastic foundations. We used the local Lyapunov- Schmidt method to find The bifurcation equation and the Discriminant set. Also, we calculated the topological indices of the solutions of the problem.

In this paper we study the fuzzy norm and the fuzzy normed space, then we define the fuzzy normed space and study the notion of weak and strong fuzzy convergence of sequences in fuzzy normed spaces. After that we prove some basic results of fuzzy convergent in these spaces.