Modified Mathematical Model of Tumor Treatment by Radiotherapy

Fatima Ahmed Shihab

doi:10.21123/bsj.2020.17.3.0841

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Publication Date

Tue Sep 01 2020

Journal Name

Baghdad Science Journal

Volume

17

Issue Number

3

DOI

10.21123/bsj.2020.17.3.0841

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Modified Mathematical Model of Tumor Treatment by Radiotherapy

Cancer

Laplace Adomian Decomposition method

Radiotherapy

Saad Naji

Fatima Ahmed Shihab

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In this research, a mathematical model of tumor treatment by radiotherapy is studied and a new modification for the model is proposed as well as introducing the check for the suggested modification. Also the stability of the modified model is analyzed in the last section.

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Publication Date

Fri Jul 01 2022

Journal Name

Iop Conference Series: Earth And Environmental Science

Computer Model Application for Sorting and Grading Citrus Aurantium Using Image Processing and Artificial Neural Network

Mina M.

Hussein A.

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Abstract<p>This study was conducted in College of Science \ Computer Science Department \ University of Baghdad to compare between automatic sorting and manual sorting, which is more efficient and accurate, as well as the use of artificial intelligence in automated sorting, which included artificial neural network, image processing, study of external characteristics, defects and impurities and physical characteristics; grading and sorting speed, and fruits weigh. the results shown value of impurities and defects. the highest value of the regression is 0.40 and the error-approximation algorithm has recorded the value 06-1 and weight fruits fruit recorded the highest value and was 138.20 g, Gradin</p> ... Show More

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(1)

Publication Date

Fri Apr 01 2016

Journal Name

Journal Of Economics And Administrative Sciences

A Comparison Between Classic Local Least Estimatop And Bayesian Methoid For Estimating Semiparametric Logistic Regression Model

الانحدار اللوجستي- أنموذج شبه المعلمي- المقدر - مقدر بيز- دالة اللب-عرض الحزمة .

قتيبة نبيل

علي محمد

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Semi-parametric models analysis is one of the most interesting subjects in recent studies due to give an efficient model estimation. The problem when the response variable has one of two values either 0 ( no response) or one – with response which is called the logistic regression model.

We compare two methods Bayesian and . Then the results were compared using MSe criteria.

A simulation had been used to study the empirical behavior for the Logistic model , with different sample sizes and variances. The results using represent that the Bayesian method is better than the at small samples sizes.

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Publication Date

Tue Mar 01 2022

Journal Name

Results In Engineering

Predictive model for stress at ultimate in internally unbonded steel tendons based on genetic expression programming

Nazar K.

Iqbal

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(15)

Publication Date

Wed Oct 17 2018

Journal Name

Journal Of Economics And Administrative Sciences

Comparison Between the Methods Estimate Nonparametric and Semiparametric Transfer Function Model in Time Series Using Simulation

Munaf Yousif

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Publication Date

Mon May 27 2019

Journal Name

Al-academy

Pluralism in Tuning the Contemporary Arab Oud Strings - Egyptian and Iraqi Schools Model: فراس ياسين جاسم

oud schools --- Egyptian school --- Iraqi school. Oud of five --- six and seven strings

Firas

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The Egyptian and Iraqi schools are one of the most important musical schools in the style of playing the oud. The influence of the style of these schools extended in the contemporary Arab world, and there were important names that emerged characterized with their style of playing. Thus, the ways of tuning the strings of oud varied between the two schools because of the difference in the ways of playing and the difference in the style of expression. The aim of the research was to identify the pluralism of the variable tunings of the strings of the contemporary Arab oud of the Egyptian and Iraqi schools, along the historical period extending from the late nineteenth and twentieth centuries to the present time. The oud has been classified i

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Publication Date

Thu Nov 21 2019

Journal Name

Journal Of Engineering

A Neural Networks based Predictive Voltage-Tracking Controller Design for Proton Exchange Membrane Fuel Cell Model

Neural Networks

Predictive Controller

Fuel Cell

Particle Swarm Optimization

Ahmed Sabah

Hayder A.

Essra A.

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In this work, a new development of predictive voltage-tracking control algorithm for Proton Exchange Membrane Fuel Cell (PEMFCs) model, using a neural network technique based on-line auto-tuning intelligent algorithm was proposed. The aim of proposed robust feedback nonlinear neural predictive voltage controller is to find precisely and quickly the optimal hydrogen partial pressure action to control the stack terminal voltage of the (PEMFC) model for N-step ahead prediction. The Chaotic Particle Swarm Optimization (CPSO) implemented as a stable and robust on-line auto-tune algorithm to find the optimal weights for the proposed predictive neural network controller to improve system performance in terms of fast-tracking de

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(7)

Publication Date

Sun Oct 19 2025

Journal Name

Lecture Notes In Networks And Systems

Using Artificial Intelligence in Analyzing Historical Documents: The Egyptian Libyan Border as a Model (1911–1951)

Rihab Hassan

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Publication Date

Sun Jun 23 2019

Journal Name

American Rock Mechanics Association

Using an Analytical Model to Predict Collapse Volume During Drilling: A Case Study from Southern Iraq

reservoir geomechanics

strength

Rock mechanics

borehole collapse

Reservoir Characterization

Upstream Oil & Gas

pore pressure

Wellbore Design

horizontal stress

Drilling

Ahmed K.

Asmaa

Usama

Ralph E.

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Zubair Formation is one of the richest petroleum systems in Southern Iraq. This formation is composed mainly of sandstones interbedded with shale sequences, with minor streaks of limestone and siltstone. Borehole collapse is one of the most critical challenges that continuously appear in drilling and production operations. Problems associated with borehole collapse, such as tight hole while tripping, stuck pipe and logging tools, hole enlargement, poor log quality, and poor primary cement jobs, are the cause of the majority of the nonproductive time (NPT) in the Zubair reservoir developments. Several studies released models predicting the onset of borehole collapse and the amount of enlargement of the wellbore cross-section. However, assump

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Publication Date

Mon Feb 01 2021

Journal Name

Journal Of Physics: Conference Series

The Fear Effect on a Food Chain Prey-Predator Model Incorporating a Prey Refuge and Harvesting

Zina Kh.

Azhar A.

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Abstract<p>In this paper, we investigate the impact of fear on a food chain mathematical model with prey refuge and harvesting. The prey species reproduces by to the law of logistic growth. The model is adapted from version of the Holling type-II prey-first predator and Lotka-Volterra for first predator-second predator model. The conditions, have been examined that assurance the existence of equilibrium points. Uniqueness and boundedness of the solution of the system have been achieve. The local and global dynamical behaviors are discussed and analyzed. In the end, numerical simulations are confirmed the theoretical results that obtained and to display the effectiveness of varying each parameter</p> ... Show More

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Publication Date

Tue Jan 01 2019

Journal Name

The 53rd U.s. Rock Mechanics/geomechanics Symposium

Using an analytical model to predict collapse volume during drilling: A case study from southern Iraq

A.K.

uSAMA

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(7)

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