University of Technology-IraqEngineering and Technology Journal1681-6900371B20190425Improvement of Harris Algorithm Based on Gaussian Scale Space1516882310.30684/etj.37.1B.1ENAbdul Amir A.KarimDepartment of Computer Science, University of Technology, Baghdad - IraqRafal A.SameerDepartment of Computer Science, University of Technology, Baghdad - IraqJournal Article20180128Features is the description of the image contents which could be corner, blob or edge. Corners are one of the most important feature to describe image, therefore there are many algorithms to detect corners such as Harris, FAST, SUSAN, etc. Harris is a method for corner detection and it is an efficient and accurate feature detection method. Harris corner detection is rotation invariant but it isn’t scale invariant. This paper presents an efficient harris corner detector invariant to scale, this improvement done by using gaussian function with different scales. The experimental results illustrate that it is very useful to use Gaussian linear equation to deal with harris weakness.https://etj.uotechnology.edu.iq/article_168823_1fbde80c1ed177ae17f4e829dd066b71.pdfUniversity of Technology-IraqEngineering and Technology Journal1681-6900371B20190425Synthesis, Characterization and Antibacterial activities of Uracil and Uracil–Oxalate Complexes with Cr(III) and Fe(III)61616882410.30684/etj.37.1B.2ENShatha M.H.ObaidChemistry DepartmentEducation College of Pure Sciences - Ibn AlHaitham, University of Baghdad, Baghdad - IraqJournal Article20170718New complexes of the some trivalent transition metal ions of the uracil such as [M(Ura)3Cl3] and mixed ligand metal complexes with uracil and oxalic acid [M(Ura)2(OA)(OH2)Cl].H2O type, where (Ura)=Uracil, (OA= Oxalic acid dihydrate, (M= Cr+3 and Fe+3) were synthesized and characterized by the elemental analysis, FT.IR, electronic spectra, mass spectra and magnetic susceptibility as well as the conductivity measurements. Six–coordinated metal complexes were suggested for the isolated complexes of Cr+3 and Fe+3 with molecular formulas dependent on the nature of uracil and oxalic acid present. The proposed molecular structure for all complexes with their ions is octahedral geometries. The antibacterial efficiency was tested of metal salts, ligands and metal complexes to the pathogenic bacteria activity have been studied.https://etj.uotechnology.edu.iq/article_168824_b34388df78d390e464be70600c46029d.pdfUniversity of Technology-IraqEngineering and Technology Journal1681-6900371B20190424Morphological and Optical Properties of Porous Silicon172016882510.30684/etj.37.1B.3ENMohammed S.MohammedDepartment of Applied Sciences, The University of Technology, Baghdad - IraqRuqaya A.ShlagaDepartment of Applied Sciences, The University of Technology, Baghdad - IraqJournal Article20171019In this work photo-electrochemical etching was used to synthesize uniform and non-uniform macro porous silicon from n-type with orientation (100). Specimens were anodized in a sol of 25% HF: C2H2OH at 1:1 rate. Morphology and porosity of the samples were studied. Optical characteristics (reflection and photoluminescence) of PS samples by changing current density (10, 12, 14 and 16 mA/cm2 ) for fixed etching time (8min) and power density (17mW/cm2 ) by using red laser illumination wavelength (645nm) were investigated. Porous silicon samples imaged via scanning electron microscope (SEM), which showed the topography of silicon surface and pores distribution.https://etj.uotechnology.edu.iq/article_168825_06dde54ab3250d458f3ec8d9bf764b9a.pdfUniversity of Technology-IraqEngineering and Technology Journal1681-6900371B20190424Preparation and Study the Structure of Pure and Impure Barium Titanate with Zr4+ Ion212416882610.30684/etj.37.1B.4ENMojahid M.NajimDepartment of Applied Sciences, University of Technology, Baghdad - IraqWasan A.HekmatDepartment of Applied Sciences, University of Technology, Baghdad - IraqJournal Article20180306In this research, pure and impure barium titanate with Zr4+ ion with two molar ratios x= (5, 10) % have been synthesized by solid-state reaction technique. The powders calculations at two temperatures (950°C and 1400°C). An XRD technique was used in order to study the crystal structure of pure and impure barium titanate, which confirmed the formation of the tetragonal phase of BaTiO3, then calculate the lattice parameters of pure and impure barium titanate, the addition of zirconium ion Zr4+ lead to increases lattice parameters.https://etj.uotechnology.edu.iq/article_168826_948deaeb3eb8c8a0e16e79c21af541b9.pdfUniversity of Technology-IraqEngineering and Technology Journal1681-6900371B20190424Properties of Fuzzy Closed Linear Operator253116882710.30684/etj.37.1B.5ENJehad R.KiderDepartment of Mathematics and Computer Applications, School of Applied Sciences, University of Technology, Baghdad - IraqNoor A.KadhumDepartment of Mathematics and Computer Applications, School of Applied Sciences, University of Technology, Baghdad - IraqJournal Article20180312In this paper we recall the definition of fuzzy norm of a fuzzy bounded linear operator and the fuzzy convergence of sequence of fuzzy bounded linear operators in order to prove the uniform fuzzy bounded theorem and fuzzy open mapping theorem. The definition of fuzzy closed linear operators on fuzzy normed spaces is introduced in order to prove the fuzzy closed graph theorem.https://etj.uotechnology.edu.iq/article_168827_42de2e77a24c6a9315f7aaa26035fba1.pdf