Compared Some Estimators Ordinary Ridge Regression And Bayesian Ridge Regression With Practical Application

عماد حازم عبودي; احمد جبار حمود

doi:10.33095/jeas.v25i112.1673

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Publication Date

Sat Jun 01 2019

Journal Name

Journal Of Economics And Administrative Sciences

Volume

25

Issue Number

112

DOI

10.33095/jeas.v25i112.1673

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Compared Some Estimators Ordinary Ridge Regression And Bayesian Ridge Regression With Practical Application

انحدار الحرف الاعتيادية المتحيزة

انحدار الحرف الاعتيادية غير المتحيزة

انحدار الحرف البيزية.

biased unbiased Bayesian

عماد حازم عبودي

احمد جبار حمود

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Maulticollinearity is a problem that always occurs when two or more predictor variables are correlated with each other. consist of the breach of one basic assumptions of the ordinary least squares method with biased estimates results, There are several methods which are proposed to handle this problem including the method To address a problem and method To address a problem , In this research a comparisons are employed between the biased method and unbiased method with Bayesian using Gamma distribution method addition to Ordinary Least Square method, We will use the simulation to compare these methods using the mean squares error criteria. The method of biased gave good results by using sizes different samples.

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Publication Date

Fri Mar 06 2026

Journal Name

Journal Of Studies And Researches Of Sport Education

The effect of using the educational bag on the level of learning some offensive skills with the epee weapon

The effect of using the educational bag on the level of learning some offensive skills with the epee weaponDr. Lamia Hassan Al-Diwan

D. Fatima Abdel-Maliki

Dr. Kholoud Laith Abdel Karim2005 Technical and technological development has been increasing day after day and has included all areas of life

including the educational process

which has benefited from technologies such as (computer

video

and pictorial models) in introducing them as tools to aid the learning process. Educational packages have proven their effectiveness in education as they prepare learners with different areas of experience. Sensory audio-visual

through which the learner acquires different educational experiences through interaction

practice

participation

and communication with the data of the surrounding environment through the diversity of knowledge sources that suit his inclinations and needs. The research aimed to prepare an educational bag to teach some offensive skills in the epee weapon. And to find out the effect of using the proposed educational bag on the level of learning some offensive skills in the epee weapon. We hypothesized that the proposed educational package has a positive impact on the level of learning some offensive skills with the epee weapon. There were statistically significant differences in testing the level of learning some offensive skills with the epee weapon between the post-tests of the experimental and control groups

and in favor of the experimental group. The researchers used the experimental method to suit the nature of solving the research problem

and the research sample was chosen intentionally from the girls’ fencing club players (beginners) in the governorate. Basra for the year 2005. The number of players was (16)

which represented the entire study population. The experiment was conducted in the sports hall of the South Oil Sports Club in Basra. We concluded that the educational package has a positive impact on the level of learning some offensive skills in the epee weapon. There were statistically significant differences in the learning level test for some offensive skills in the epee weapon between the experimental group and the control group in the post-tests and in favor of the experimental group. We recommended the necessity of using the proposed educational curriculum to learn some offensive skills in the epee weapon in fencing lessons or in sports clubs. Adopting modern techniques in training

teaching or teaching fencing skills and searching for new methods. Conducting similar studies on other skills or different samples.Keywords: educational bag

offensive skills with an epee weapon

fencing game. Teaching methods. Basra Girl Sports ClubLamya Hassan Aldewan [email protected] of Basra - College of Education and Sports Scienceshttps://orcid.org/0000-0003-0377-6915 Keywords educational bag

offensive skills with an epee weapon

fencing game. Teaching methods. Basra Girl Sports Club

‏Lamyaa

Fatima

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Publication Date

Wed Jan 01 2020

Journal Name

Plant Archives

The effect of adding some essential oils to the physicochemical properties of frozen beef sausage with different storage periods

Al-Zaidi R.M.K.

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Publication Date

Tue Mar 31 2015

Journal Name

Al-khwarizmi Engineering Journal

Influence of Coating with Some Natural Based Materials on the Erosion Wear Behavior of Glass Fiber Reinforced Epoxy Resin

Keywords: Composites

Preparation of natural materials

Erosion wear

glass fiber

Coating.

Aseel Basim

Emad Saadi

Reem Alaa

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Abstract

In the present study, composites were prepared by Hand lay-up molding. The composites constituents were epoxy resin as a matrix, 6% volume fractions of glass fibers (G.F) as reinforcement and 3%, 6% volume fractions of preparation natural material (Rice Husk Ash, Carrot Powder, and Sawdust) as filler. Studied the erosion wear behavior and coating by natural wastes (Rice Husk Ash) with epoxy resin after erosion. The results showed the non – reinforced epoxy have lower resistance erosion than natural based material composites and the specimen (Epoxy+6%glass fiber+6%RHA) has higher resistance erosion than composites reinforced with carrot powder and sawdust at 30cm , angle 60

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Publication Date

Mon Sep 01 2014

Journal Name

Al-khwarizmi Engineering Journal

Numerical Investigation of Transient Heat Conduction through a Thermal Insulation of Temperature Dependant Thermal Properties

Mishaal Abdulameer

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The two-dimensional transient heat conduction through a thermal insulation of temperature dependent thermal properties is investigated numerically using the FVM. It is assumed that this insulating material is initially at a uniform temperature. Then, it is suddenly subjected at its inner surface with a step change in temperature and subjected at its outer surface with a natural convection boundary condition associated with a periodic change in ambient temperature and heat flux of solar radiation. Two thermal insulation materials were selected. The fully implicit time scheme is selected to represent the time discretization. The arithmetic mean thermal conductivity is chosen to be the value of the approximated thermal conductivity at the i

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Publication Date

Mon Jun 22 2020

Journal Name

Systematic Reviews In Pharmacy

Effect of Application of BMP2/TGF β1 in Traumatic Pulp of Osteoporotic Rat

BMP-2

osteoporosis

pulptomy

reparative dentin

TGF β1

tooth repair

Abdulla

Athraa

Dhuha

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Introduction: Dental pulp tissue contains many undifferentiated mesenchymal cells, which have the ability to differentiate into different specialized cells. Induced pluripotent stem cells have been developed by various growth factors. The present study was designed to evaluate the effect of application of a combination BMP2/TGF β1 as capped material for traumatic pulp in osteoporotic rat. Materials and Methods: Twelfth female rats (6 normal rat and other 6 osteoporotic rat)., their maxillary anterior teeth subjected to mechanical traumatized pulptomy, the left tooth has speared without treatment, while the right tooth capped with application of 0.5 μl of BMP2 and 0.5μl of TGF β1 .Evaluation of histological changes includes scoring of pu

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Publication Date

Wed May 29 2019

Journal Name

Iraqi Journal Of Physics

Weathering effects on the thermal conductivity of PS/PMMA blends for packaging application

PS

PMMA

PS/PMMA blend

UV-weathering

rain-weathering.

Nahida J.

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This work describes the weathering effects (UV-Irradiation, and Rain) on the thermal conductivity of PS, PMMA, PS/PMMA blend for packaging application. The samples were prepared by cast method at different ratios (10, 30, 50, 70, and 90 %wt). It was seen that the thermal conductivity of PMMA (0.145 W/m.K), and for PS(0.095 W/m.K), which increases by PS ratio increase up to 50% PS/PMMA blend then decreased that was attributed to increase in miscibility of the blend involved. By UV-weathering, it was seen that thermal conductivity for PMMA increased with UV-weathering up to (30hr) then decreased, that was attributed to rigidity and defect formation, respectively. For 30%PS/PMMA, there results showed unsystematic decrease in thermal conduct

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Publication Date

Tue Dec 01 2020

Journal Name

International Journal Of Electrical And Computer Engineering (ijece)

A Haptic feedback system based on leap motion controller for prosthetic hand application

Hussam

...Show More Authors

Leap Motion Controller (LMC) is a gesture sensor consists of three infrared light emitters and two infrared stereo cameras as tracking sensors. LMC translates hand movements into graphical data that are used in a variety of applications such as virtual/augmented reality and object movements control. In this work, we intend to control the movements of a prosthetic hand via (LMC) in which fingers are flexed or extended in response to hand movements. This will be carried out by passing in the data from the Leap Motion to a processing unit that processes the raw data by an open-source package (Processing i3) in order to control five servo motors using a micro-controller board. In addition, haptic setup is proposed using force sensors (F

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(4)

(3)

Publication Date

Fri Jan 01 2016

Journal Name

Journal Of Engineering

Application of SWAT Model for Sediment Loads from Valleys Transmitted to Haditha Reservoir

SWAT model

sediment load

runoff

Haditha Dam Reservoir

Ayad Sleibi

Sadeq Oleiwi

Omar Manfi

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This study included the extraction properties of spatial and morphological basins studied using the Soil and Water Assessment Tool (SWAT) model linked to (GIS) to find the amount of sediment and rates of flow that flows into the Haditha reservoir . The aim of this study is determine the amount of sediment coming from the valleys and flowing into the Haditha Dam reservoir for 25 years ago for the period (1985-2010) and its impact on design lifetime of the Haditha Dam reservoir and to determine the best ways to reduce the sediment transport. The result indicated that total amount of sediment coming from all valleys about (2.56 * 10⁶ ton). The maximum annual total sediment load was about (488.22 * 10³ ton) in year 1988

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Publication Date

Wed Jan 01 2020

Journal Name

Technologies And Materials For Renewable Energy, Environment And Sustainability: Tmrees20

Opto- electrical properties of p-SnSe:S/N-Si heterojunction for solar cell application

Ghuzlan Sarhan

Bushra K. H.

Bushra H.

Hanan K.

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(4)

(3)

Publication Date

Sun Mar 05 2017

Journal Name

Baghdad Science Journal

The Effect of Organic Matter Application on Phosphorus Status in the Calcareous Soil

Compost

Addition levels

Time of addition

(NaHCO3) extractable phosphorus

Soil depth

Cropped soil

Uncropped soil

Ayad Ghazi

Ibrahim Bakri A.

Shafiek C. S.

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A field experiment is conducted to study the effect of different levels of peat (0, 25, 50, 75, and 100 Mg ha-1 to uncropped and cropped soil to wheat. Soil samples are taken in different period of time (0, 3, 30, 60, 90, 120, and 180 days after cultivation to determine (NaHCO3-Exteractable P at 3 different depths (0-10, 10-20, and 20-30 cm). Field Experiment is conducted in a randomized complete block design (RCBD) with four replicates. Wheat, Al-Rasheed variety, is cultivated as a testing crop. The entire field is equally dived in two divisions. One of the two divisions is cultivated to wheat and the second is left uncropped. The effect of five levels of peat namely 0, 25, 50, 75, 100 Mg ha-1 is investigated. Soils are fully analyzed

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