Applying Shrinkage Estimation Technique of P(Y<Max X1, X2,â€¦, Xk) in Case of Generalized Exponential Distribution

Adel Abdulkadhim Hussein; Mohammad Khairallah Yaseen; Abbas Najim Salman

doi:10.30526/33.3.2480

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Publication Date

Mon Jul 20 2020

Journal Name

Ibn Al-haitham Journal For Pure And Applied Sciences

Volume

33

Issue Number

3

DOI

10.30526/33.3.2480

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Applying Shrinkage Estimation Technique of P(Y<Max X1, X2,â€¦, Xk) in Case of Generalized Exponential Distribution

Generalized Exponential Distribution (GED)

Stressâ€“Strength (S-S) models

Maximum likelihood estimator (MLE)

Shrinkage estimator (Sh) and mean squares error (MSE).

Adel Abdulkadhim Hussein

Mohammad Khairallah Yaseen

Abbas Najim Salman

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This paper concerned with estimation reliability (Â for K components parallel system of the stress-strength model with non-identical components which is subjected to a common stress, when the stress and strength follow the Generalized Exponential Distribution (GED) with unknown shape parameter Î± and the known scale parameter Î¸ (Î¸=1) to be common. Different shrinkage estimation methods will be considered to estimate Â depending on maximum likelihood estimator and prior estimates based on simulation using mean squared error (MSE) criteria. The study approved that the shrinkage estimation using shrinkage weight function was the best.

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Publication Date

Tue Aug 01 2023

Journal Name

Innovative Food Science & Emerging Technologies

Non-thermal pasteurization of milk by an innovative energy-saving moderate electrical field equipped with elongated electrodes and process optimization

Ali Wali M.

Azhar J.

Asaad R.

Mohsen

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(11)

Publication Date

Thu Nov 07 2024

Journal Name

Journal Of Thermal Analysis And Calorimetry

Performance improvement of phase change material (PCM)-based shell-and-tube-type latent heat energy storage system utilizing curved fins

Tuqa

Nirmalendu

Thamir

Farhan Lafta

Abbas Fadhil

Abdellatif M.

Ali E.

Hussein

Ahmed Kadhim

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(8)

Publication Date

Sat Sep 01 2018

Journal Name

Polyhedron

Novel dichloro (bis {2-[1-(4-methylphenyl)-1H-1, 2, 3-triazol-4-yl-κN3] pyridine-κN}) metal (II) coordination compounds of seven transition metals (Mn, Fe, Co, Ni, Cu, Zn and Cd)

The 1

3-dipolar cycloaddition “click” reaction between an azide and an alkyne to give a 1

2

3-triazole was reported by Huisgen in 1961 [1]. In 2002 the Copper(I)-catalyzed Azide-Alkyne Cycloaddition (CuAAC) to prepare a 1

2

3-triazole was reported [2]

[3]. The existence of relatively basic nitrogen atoms in the 1

2

3-triazole rings

and the possibility of introducing additional donor groups in the substituents (Fig. 1)

made the CuAAC “click” reaction an attractive method to prepare differently substituted 1

2

3-triazoles. These compounds have been used as ligands to coordinate to various metal ions that display a range of applications such as in electrochemical and photochemical studies

in supramolecular chemistry

magnetism

metal-ion sensing and catalysis [4]. The reasons for the success of the “click” reaction

is that it is easy to carry out and is widely applicable. It is not affected by a variety of functional groups

and can be carried out with a variety of Cu(I) catalysts and solvents

including aqueous conditions. The Cu(I) catalysts overcome the high activation energy barrier of the non-catalyzed Huisgen reaction by changing the mechanism of the reaction. A large variety of copper catalysts can be used for the CuAAC reaction

on condition that the maximum concentration of Cu(I) species is generated during the reaction. The pre-catalyst can be a Cu(II) salt (usually CuSO4) together with a reducing agent (often sodium ascorbate) or a Cu(I) compound in the presence of a base or amine ligand and a reducing agent to prevent oxidation to Cu(II). Some strong oxidising cupric salts or complexes such as Cu(OAc)2 also work. The solvent is very flexible from organic to aqueous

with the most commonly used combination water + an alcohol (t-BuOH

MeOH or EtOH). The key role of the solvent or solvent mixture is to solubilize the substrates and Cu(I) catalyst in order to ensure rapid reactions. Such aqueous conditions are very useful for biochemical conjugations

as well as for organic syntheses. We recently reported on the synthesis of a series of differently substituted 1

2

3-triazole chromophores

the substituted 2-(1-phenyl-1H-1

2

3-triazol-4-yl)pyridine ligands [5]

see Fig. 2 middle

with substituents R = H (L1)

CH3 (L2)

OCH3 (L3)

COOH

F

Cl

CN

CF3

O(CH2)3CH3 and N(CH3)2. These versatile ligands were found to coordinate to various first row transition metals

such as manganese

cobalt and nickel [6]. Here we extend the series to include more first row transition metal(II) coordination compounds

iron

copper and zinc

as well as a second row transition metal(II) coordination compound

cadmium

containing the 2-(1-(4-methyl-phenyl)-1H-1

2

3-triazol-1-yl)pyridine chromophore (Fig. 2 right with R = CH3). This series of seven novel coordination compounds is the first series of pyridyl-triazole based transition metal coordination compounds where seven different transition metals are coordinated to the same 1

2

3-triazole chromophore

namely 2-(1-(4-methyl-phenyl)-1H-1

2

3-triazol-1-yl)pyridine.

Kinaan M

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Publication Date

Wed Oct 01 2014

Journal Name

Journal Of Economics And Administrative Sciences

Building standardized Growth Curves for Iraqi Children Under Five Years

Centile

LMSP Method

Box-Cox Distribution

General Additive model for location scale and shape.

خلود يوسف

احمد

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The growth curves of the children are the most commonly used tools to assess the general welfare of society. Particularity child being one of the pillars to develop society; through these tools, we can path a child's growth physiology. The Centile line is of the important tools to build these curves, which give an accurate interpretation of the information society, also respond with illustration variable age. To build standard growth curves for BMI, we use BMI as an index. LMSP method used for finding the Centile line which depends on four curves represents Median, Coefficient of Variation, Skews, and Kurtosis. These can be obtained by modeling four parameters as nonparametric Smoothing functions for the illustration variable. Ma

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Publication Date

Tue Apr 11 2023

Journal Name

Indonesian Journal Of Chemistry

Synthesis of Co (ll), Ni (ll), Cu (ll), Pd (ll), and Pt (lV) Complexes with 14, 15, 34, 35-Tetrahydro-11 H, 31 H-4, 8-diaza-1,3 (3,4)-ditriazola-2,6 (1,4)-dibenzenacyclooctaphane-4,7-dien-15, 35-dithione, and the Thermal Stability of Polyvinyl Chloride Modified Complexes

Schiff base

PVC

photostability

photodegradation

PVC films

weight loss

Al-Khazraji

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In the current endeavor, a new Schiff base of 14,15,34,35-tetrahydro-11H,31H-4,8-diaza-1,3(3,4)-ditriazola-2,6(1,4)-dibenzenacyclooctaphane-4,7-dien-15,35-dithione was synthesized. The new symmetrical Schiff base (Q) was employed as a ligand to produce new complexes comprising Co(II), Ni(II), Cu(II), Pd(II), and Pt(II) metal-ions at a ratio of 2:1 (Metal:ligand). There have been new ligands and their complexes validated by (FTIR), (UV-visible), 1H-NMR, 13C-NMR, CHNS, and FAA spectroscopy, Thermogravimetric analysis (TG), Molar conductivity, and Magnetic susceptibility. The photostabilization technique to enhance the polymer was also used. The ligand Q and its complexes were mixed in 0.5% w/w of polyvinyl chloride in tetrahydrofuran

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Publication Date

Mon Sep 20 2021

Journal Name

Key Engineering Materials

Effect of Partial Substitution of Sr by Ba on the Structural Properties of Tl0.8Ni0.2Sr2-xBrxCa2Cu3O9-δ System

Mohammed Abdul Nebi

Rihab Nassr

Naba

Kareem Ali

Auday H.

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In this manuscript, the effect of substituting strontium with barium on the structural properties of Tl_0.8Ni_0.2Sr_2-xBr_xCa₂Cu₃O_9-δcompound with x= 0, 0.2, 0.4, have been studied. Samples were prepared using solid state reaction technique, suitable oxides alternatives of Pb₂O₃, CaO, BaO and CuO with 99.99% purity as raw materials and then mixed. They were prepared in the form of discs with a diameter of 1.5 cm and a thickness of (0.2-0.3) cm under pressures 7 tons / cm², and the samples were sintered at a constant temperature o

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(3)

Publication Date

Fri Sep 22 2017

Journal Name

Ibn Al-haitham Journal For Pure And Applied Sciences

Synthesis A.nd Study The Biological Activity of Some Schiff-Bases Derived F,rom 2- Aminothiazole or 2-Aminobenzothiazole and Vanillin Derivatives

E. T.

J. H.

S. S.

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Two series of 1,n-alkylene glycol di [4{N(T-thiazolylazoÂ

nrethinyl)}2-metho y] phenyl ether and I ,n-alkylene glycol di[4{N(r-benzo-thiazolylazomethinyl)}2-methoxy]phenyl ether were synthesize-d via rea tions 2-aminothiazole and 2-aminobenzothiazole with dialdehyde â€¢ (which are synthesized from .reaction vanil.lin with

l ,n-dibromo or ehloro. alkane in the basic me'dia ) . &nb

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Publication Date

Sun Mar 01 2015

Journal Name

Baghdad Science Journal

Performance evolution of a hybrid thermal solar air conditioning system and compare it with a traditional system according to Iraq weather

Salah Subhe

Ali Raheemb

Amer Abdullah

Hassan Issa

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In a hybrid cooling solar thermal systems , a solar collector is used to convert solar energy into heat energy in order to super heat the refrigerant leaving the compressor, and this process helps in the transformation of refrigerant state from gaseous state to the liquid state in upper two-thirds of the condenser instead of the lower two-thirds such as in the traditional air-conditioning systems and this will reduce the energy needed to run the process of cooling .In this research two systems with a capacity of 2 tons each were used, a hybrid air-conditioning system with an evacuated tubes solar collector and a traditional air-conditioning system . The refrigerant of each type was R22.The comparison was in the amou

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Publication Date

Sat Dec 17 2022

Journal Name

Iraqi Journal Of Laser

PDF Photodynamic effect of Rose Bengal activated by low-level laser light on S. aureus : Qusay K. Abbas*, Layla M. Hassan

الطالب قصي خضير و د ليلى

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Abstract: Background: Staphylococcus aureus is Gram-positive bacteria that lives as a normal flora in living organisms but can be pathogenic to humans. Although a relatively unspectacular, nonmotile coccoid bacterium, S. aureus is a dangerous human pathogen in both community-acquired and nosocomial infections. Due to the increasing emergence of new strains of this antibiotic-resistant bacteria, it has become essential to approach different methods to control this pathogen. One of these methods is the antimicrobial photodynamic inactivation process using a low-level laser, in this paper, the Photodynamic effects of Rose Bengal and LLLL on the virulence factors of S.aureus were evaluated.

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Publication Date

Tue Dec 01 2020

Journal Name

Journal Of Economics And Administrative Sciences

The effect of the Iraqi dinar exchange rate on inflation and economic growth using the joint integration methodology "a standard study"

سعر الصرف

التضخم

النمو الاقتصادي

exchange rate

inflation

economic growth

Ghufran noori

Hamdia shaker

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The exchange rate is of great importance at the global and local levels alike, as this importance increases with the increasing rates of development of economic relations between countries of the world due to openness and integration into the global economy, expressed by the expansion of the volume of trade and financial relations between countries. The Central Bank of Iraq has set the need to stabilize this price as a goal to reduce inflation rates and reduce them to the internationally accepted rates by using the foreign currency sale window to achieve a balance between the forces of supply and demand for foreign currency and to preserve the value of the Iraqi dinar. The research concluded that the central bank was It has a maj

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