Journal of College of Education

This paper is devoted to introduce the notion of fuzzy extremely disconnected space in fuzzy topological spaces on fuzzy sets , and study some theorems and properties on fuzzy b- extremely disconnected space and fuzzy b-hyper connected space.

This research aims at designing and developing an interactive distance learning system based on Internet, called Web-Based Distance Learning System (WBDLS), which manage Internet class activities and e-learning resources.This system integrates Web technology with database technology and provides a user-friendly teaching and learning environment for both instructors and students . It consists of a course server where the course contents are installed, and many client PCs from which instructor and students interact with the server using WWW as the interface

Thin films of (AgO70%:In30%) have been prepared on glass substrates under a vacuum ~10-4 Torr by the Thermal Vacuum Evaporation technique. Thickness of the films varied between (50-100) nm. The surface morphology and crystal structure were investigated by X-ray diffraction (XRD). The optical properties also investigated by UV- spectrometer, Atomic Force Microscopy (AFM) and Optical Microscopy respectively. The X-ray diffraction (XRD) analysis reveals the peaks at (012) (1̅12) and (222) plans Which confirm that the prepared films are AgO70%:In30%. Transmittance and absorption data in range of wavelength (320 – 1100) nm have been used to calculate the optical constants for the prepared films, and this optical results showed that AgO70%:In30% films has a band gap of 3. 5 eV. The AFM technique showed that the grain size of particle for AgO70%:In30% thin films was 46.2 nm.

In this paper, we introduce another type of quasinormal operator is called (K-N)*-quasinormal operator and give some properties of this concept with basic relations have been given.

This paper the undoped Tin Oxide( SnO₂) and Lithium doped( SnO₂:Li) were prepared with doping percentage (5%) for the Molartiy (0.05, 0.1 , 0.15 , 0.2 ) ,were prepared by using chemical Spray pyrolysis technique (CSP) . Have been deposited on a glass substrate temperature at (400℃) , And the thickness of the prepared films were (350∓15) nm . By the X-Ray diffraction technique the nature of structure was exmined with aprefered orientation along (110) . It was found that . The prepared undoped ( SnO₂) and indoped( SnO₂) have a (Tetragonal) polycrystalline structure . Also it was found that the average crystalline size increase as the increase in doping of the concentration(9.20 – 21.86) nm . AFM images the average grain size increase of the Molarity (73.60 -106.16)nm.

In the this paper , modified three − step iteration process for three self mappings is introduced in strictly convex and uniformly smooth Banach space . Also the strongly and weakly convergence theorems of this iteration are proved for three asymptotically quasi nonexpansive mappings in uniformly smooth and uniformly convex Banach space.