Asian Journal of Current Engineering and Maths

In this paper we analyze certain behaviors of preopen sets in minima structureon X . By using m-structures  m₁, m₂ on a topological space (X,Ï„), some properties are obtained.

 

In this paper, we introduce -locally closed sets and different notions of generalization of continuous functions, namely LC-continuity, LC*-continuity, LC**-continuity, LC-irresoluteness, LC*-irresoluteness and LC**-irresoluteness are introduced for topological spaces along with some of their characterizations and some inter relationships.

 

2010 Mathematics Subject code Classification : 54A05, 54C10

The aim of this paper is to study the concept of connectedness in fuzzy Čech closure spaces and establish the  relation between the connectedness in fuzzy Čech closure spaces with its associated fuzzy topological spaces.

 

Mathematical Subject Classification: 54A40

In this paper we have presented an inventory system for non-instantaneous deteriorating items with demand as quadratic function of time, constant deteriorating rate and linear holding cost. This model is developed in which shortages are allowed and partially backlogged, where the backlogging rate is variable and dependent on the waiting time for the next replenishment. The major objective is to determine the optimal selling price, the length of time in which there is no inventory shortage and the replenishment cycle time simultaneously such that the total profit per unit time has a maximum value. An algorithm is developed to find the optimal solution, and numerical examples are provided to illustrate the theoretical result. A sensitivity analysis of the optimal solution with respect to major parameters is also carried out.

In cold spray technology micro size metallic particles are accelerated with the help of nozzle and air momentum. In this article micro size metallic particles are accelerated by momentum of ions. But the main condition of momentum transfer is that energy of plasma ions should not transfer to micro size metallic particles. This can be achieved when vacuum is maintained through-out the process.  The velocity of micro size metallic particles is calculated when density gradient is zero in plasma.