Archives-September 2013

In this article neuro-fuzzy systems for active management of packet queue of the output port of a router of a telecommunication network are considered. The employment of this systems allows reduction of average packet delay in a queue of the output port of a router and lowering of the probability of packet discard.

Polycystic ovarian syndrome (PCOS) is a common reproductive disorder which leads to infertility in association with several disorders like oligomenorrhea, obesity, type II diabetes mellitus and cardiovascular disorder. It is characterized by an increased level of androgen production and disordered gonadotropin secretion, which results in chronic anovulation. In fact, it is the leading cause of anovulatory infertility. It mostly affects the women of reproductive age. In this review, there is a detailed description about the clinical manifestations, diagnosis, etiologies and treatments.

The present paper reports the findings of a study on gender (sex) difference in the attitude of post-graduate male and female students towards motion pictures. A sample of 100 (Boys-50 and Girls-50) post-graduate students belonging to all SES categories was selected and comprised the subjects. A standardized film preference questionnaire was used to ascertain the gender (sex) difference in attitude towards motion pictures. Findings suggest that females posses more favourable attitude towards motion pictures than males. Again, females are talent and sympathetic towards changes where as males are more critical in their attitude towards motion pictures.

Static analysis means examining a program code and overcoming all possible errors that tend to occur at run-time. Static analysis tools are efficient in finding bugs and correction of defects that arise due to improper functioning of the code, before the actual execution of the code [10]. In recent times, technology has facilitated us with new tools that do deeper and more efficient code analysis and have a higher defect detection rate along with low fake warning ratio. This paper aims to deal with buffer overrun anomalies occurring in many areas of source code in Java.

Travelling salesman problem is an NP complete problem and can be solved using approximation algorithms. It is a minimization problem starting and finishing at a specified vertex after having visited every other vertex exactly once. Often, the model is a complete graph. An algorithm that returns near-optimal solutions is called approximation algorithms. Through analyzing the Metric TSP, the performance of the approximation algorithm can be improved significantly using parallelization that implements a program to find a path with approximately minimum travelling cost through parallel depth-first search and the result can be verified using graphical analysis of spanning trees.

Experimental and numerical investigation of the thermal conductivity in particulate filler filled (wood dust) epoxy composites have been studied in the present work. The thermal conductivity of particulate filled polymer composite is calculated experimentally using guarded heat flow meter method in accordance with ASTM-E 1530 standard. This study shows that the incorporation of wood dust results in reduction of conductivity of epoxy resin and there by improves its thermal insulation capability. Further the thermal conductivity of particle filled composites has been calculated numerically using the microstructure images by identifying each pixel with a finite difference equation and accompanying appropriate image processing. It has been observed that numerical results, experimental values and all other models are close to each other at low particulate content. On comparison, it has been found that the errors associated with the numerical values with respect to experimental ones lie in the range of 3.4 to 14.8%, the same results from Rules-of- mixture and Maxwell’s correlations lie in the ranges of 3.4 to 29.2% and 4.2 to 46.7% respectively. The incorporation of glass fibre in wood dust filled epoxy resin reduces the thermal conductivity further. With addition of 6.5vol%, 11.3vol%, 26.8vol% and35.9vol%of wood dust and 9.6vol% glass fibre the thermal conductivity of epoxy resin dropped by about 43.6%, 47.5%, 60.3% and 62.8% respectively.

The principal objective of this paper is to investigate the behavior and load carrying capacity of reinforced concrete (indirectly loaded flanged deep beams) strengthened with carbon fiber reinforced polymer (CFRP) strips in shear. Using three types of concrete (normal strength concrete, high strength concrete, light weight concrete) group three consists of five indirectly loaded flanged deep beams (with light weight concrete) to investigate the effect of different strengthening case on the behavior and load carrying capacity of the deep beam like, three sides strengthening with CFRP (V shape), and strengthening the two opposite sides of deep beam, one side strengthening of deep beam, (L shape) strengthening.

Bullwhip effect is a phenomenon of increase in variation of demand as one move up the supply chain. Bullwhip effect has adverse effects on the sustainable growth of the industries. Bullwhip effect is very predominant in case of seasonal products. In this paper author has identified the major factors that affects the Bullwhip effect, and has derived a Multi-level model of these factors, on the basis of their contextual relationship, using Interpretive Structural Modelling (ISM) technique.

In present paper, we investigated the water samples taken from sewage treatment plant (STP) at Habak of famous Dal lake Srinagar (Jammu and Kashmir). Comparative analysis was carried out for inlet of the STP and outlet discharged into the Dal Lake. Some essential physico-chemical parameters like pH, electrical conductivity (EC), biochemical oxygen demand (BOD),chemical oxygen demand (COD),dissolved oxygen (DO),chloride (Cl-),total alkalinity (TA),total hardness (TH),total solids (TS), total dissolved solids (TDS),total suspended solids (TSS) were studied. TS,TDS and TSS were determined by oven dry method, COD was determined by reflux digestion method, BOD was estimated by Azide modification of Winkler method, TA as HCO3-,TH (Calcium, Ca2+, Magnesium,Mg2+) and Chloride (Cl-), were estimated by standard titrimetry. For major and minor trace element (TE) determination, energy dispersive x-ray (EDAX) facilities attached to Scanning Electron Microscope (SEM) were employed. It was observed that the concentration of TS, TSS, TE, BOD and COD reduces but the Dissolved Oxygen (DO) increases after treatment at STP. It was found that the contents or proportions of most of the parameters (TS, TSS, TE, BOD and COD) decrease whereas the dissolved oxygen was found to increase after treatment. Various possibilities are explored vis a vis the current observed data.

The study was conducted during January 2012 to December 2012. The butterflies were collected from different altitudes of Yelagiri hills. Seventy three species of butterflies from fourty six genera in five families were documented. Observations were made on the basis of different seasonal occurrence. We have also documented the rare butterflies in the study area which acknowledges the value of this region for conservation.