Bishop Heber College

About: Bishop Heber College is a based out in . It is known for research contribution in the topics: Thin film & Band gap. The organization has 548 authors who have published 692 publications receiving 7144 citations.

Preparation and characterization of PVA/PAM/NH4SCN polymer film by ultrasound-assisted solution casting method for application in electric double layer capacitor

Abstract: The structural analysis of PVA/PAM blend polymer electrolytes made in the different ratio of 70: 30, 50: 50 and 30: 70 by ultrasound-assisted solution casting technique shows a good miscibility between the polymers. The different weight percentage of ammonium thiocyanate (NH4SCN) salt as an ionic dopant was added to the PVA/PAM (50: 50) blend film and tested for the structural changes, electrical and electrochemical properties. The 50 wt% PVA-50 wt% PAM-20 wt% NH4SCN (UN20) blend film prepared in the presence of ultrasound exhibits a high conductivity value of 1.66 × 10−4 S cm−1, whereas the above blend membrane prepared in the absence of ultrasound (WN20) exhibits a conductivity value of 3.98 × 10−5 S cm−1. The electric double–layer capacitor (EDLC) fabricated using the activated carbon as the electrode and the film UN20 as the polymer electrolyte exhibited a specific capacitance value of 1230 mF g−1 as observed by the cyclic voltammetry studies, whereas the EDLC made with the film WN20 exhibited a poor specific capacitance value of 293 mF g−1. The charge-discharge studies of the device made using the film UN20 was found to exhibit a first cycle discharge capacitance of 2562 mF g−1 for a current load of 1 mA in the voltage range of 0–1 V. The reasons for the changes in the properties of the films prepared in presence and in absence of the ultrasound and its effect in performance of EDLC were discussed.

Analysis of non-linear singular system from fluid dynamics using extended runge-kutta methods

Abstract: A non-linear singular system from fluid dynamics has been analysed by considering various possibilities using three different fourth order extended Runge–Kutta (RK) methods based on arithmetic mean, harmonic mean and heronian mean. It is observed that the extended RK methods suit well for the nuclear reactor core problem, when compared to the Single Term Walsh Series (STWS) method [1,10]. The simple and direct methods presented here can easily be implemented in a digital computer.

MAGDM Problems with Correlation Coefficient of Triangular Fuzzy IFS

Abstract: Correlation coefficient of Intuitionistic Fuzzy Set (IFS), Interval valued IFS, Triangular IFS and Trapezoidal IFS are already present in the literature. This paper proposes the correlation coefficient for Triangular Fuzzy Intuitionistic Fuzzy set (TrFIFS). The method on uncertain Multiple Attribute Group Decision Making (MAGDM) problems based on aggregating intuitionistic fuzzy information is investigated for TrFIFSs. The Triangular Fuzzy Intuitionistic Fuzzy Ordered Weighted Averaging (TrFIFOWA) operator is proposed for TrFIFSs and the Triangular Fuzzy Intuitionistic Fuzzy Ordered Weighted Geometric (TrFIFOWG) operator is utilized for decision making models where expert weights are completely unknown. Based on these operators and the correlation coefficient defined for the TrFIFSs, new decision making models are proposed with numerical illustrations. Some comparisons are also made with existing ranking methods for validity.