Physical Sciences and Engineering

Productivity enhancement with lean concepts in belt driven compressor industry

Productivity has been an important concern to all the manufacturing industry. Lean manufacturing emerged as production strategy capable of increasing productivity by identifying and eliminating non value added activities. This article deals with productivity improvement in a Compressor manufacturing industry with a case study using lean concepts with the use of Process flow chart and Time study. The data are collected and analyzed with the use of lean tools namely Value stream mapping, 5S principle, Poka-yoke, Assembly line balancing and Layout design.

Decompositions of m(1,2)*-Continuity

In this paper, we introduce and investigate the notions of α -sets, semi- open sets, pre-open sets. Then we also introduce the notions of α-continuous mappings, semi-open continuity. Using these concepts we Obtain decompositions of - continuity. Also we investigate some properties and characterizations of these kind of sets with some theorems, examples and counter examples.

Solving fuzzy transportation problem using symmetric triangular fuzzy number

The transportation problem is one of the earliest applications of linear programming problems. In the literature, several methods are proposed for solving transportation problems in fuzzy environment but in all the proposed methods, the parameters are normal fuzzy numbers. In this paper, a general fuzzy transportation problem is discussed. In the proposed method, transportation cost, availability and demand of the product are represented by symmetric triangular fuzzy numbers. We develop fuzzy version of Vogel’s algorithms for finding fuzzy optimal solution of fuzzy transportation problem.