Journal of Al-Qadisiyah for Computer Science and Mathematics

We introduce and study the recall the notion of coc-b-connected space. And we prove many of the proposition and remarks which are related to it. And we discuss the definition of coc-b-locally connected, remarks and proposition about this concept . This study presents the definition of hyper connected by coc-b-open set. Also we give some proposition and remarks about this subject and give some important generalizations on this concept and we prove some results on the concept.

In this paper , we use the concept of coc-closed and coc-compact sets to construct a new type of functions which is coc-coercive function and investigate the properties of this concept.

In this paper, we suggest sufficied a method for solving a class of singularly perturbed boundary value problems (SPPBVP). The method is proposed the semi analytic, modest problem preparation and ready computer implementation. That is, we concerned with constructing polynomial solutions to two point second order of singularly perturbed problems of ordinary differential equation. A semi-analytic technique using two-point osculatory interpolation with the fit equal numbers of derivatives at the end points of an interval [0,1]. Numerical linear and non linear examples are given to illustrate the method. It is observed that the present method converges to the exact solution very well.

Congestion is the most important and greatest challenge that facing the transmission of data packets process. There are many sites, it is possible that the network congestion occurs as network devices (e.g. routers and switches, etc...) as well as transmission medium between network devices. There are a numerous of mechanisms to control congestion in routers. Random early detection algorithm (RED) is one of the most known mechanisms of control on the routers queues in order to reduce the proportion of the loss of packets. Random Early Detection algorithm is considered one of the active queue management. This paper uses random early detection algorithm to control the queues routers where the queues has been controlled by one of intelligent methods (fuzzy logic). The proposed method has used four parameters, which are the length of the queue rate, the rate of change in the queue and the rate of delay as inputs for fuzzy system and the dropping probability as output. The practical part has been done using object-oriented programming