On Self-Scaling Variable-Metric Algorithms
Abbas
Al-Bayati
College of Computer Sciences and Mathematics
University of Mosul, Mosul, Iraq
author
Mardin
Taher
College of Computer sciences and Mathematics
University of Mosul/Iraq
author
text
article
2007
eng
In this paper, we have developed a new self-scaling VM-method for solving unconstrained nonlinear optimization problems. The numerical and theoretical results demonstrate the general effectiveness of the new self-scaling VM-method when compared with PHUA & ZENG algorithm ; we have tested these algorithms on several high-dimension test functions with promising numerical results.
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
11
18
https://csmj.mosuljournals.com/article_163992_9040bb336fbc0ea07a5ee7e8d1face1a.pdf
dx.doi.org/10.33899/csmj.2007.163992
Stability Study of Stationary Solutions of the Viscous Burgers Equation
Mohammad
Sabawi
College of Computer sciences and Mathematics
University of Mosul, Iraq
author
text
article
2007
eng
Stability study of stationary solutions of the viscous Burgers equation using Fourier mode stability analysis for the stationary solutions , where is constant and , in two cases is analyzed. Firstly when the wave amplitude is constant and secondly when the wave amplitude is variable. In the case of constant amplitude, the results found to be: The solution is always stable while the solution is conditionally stable. In the case of variable amplitude, it has been found that the solutions and are conditionally stable.
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
19
40
https://csmj.mosuljournals.com/article_163993_0b0c8b6a22bb788f98b128756f165a63.pdf
dx.doi.org/10.33899/csmj.2007.163993
On α-strongly θ-continuity, αθ-openness and (α, θ)-closed graphs in Topological Spaces
Abdullah
Abdul-Jabbar
College of Science
University of Salahaddin
author
text
article
2007
eng
Chae et. al. (1995) have studied the concept of a-strongly q-continuous functions and (a, q)-closed graph. The aim of this paper is to investigate several new characterizations and properties of a-strongly q-continuous functions and (a, q)-closed graph. Also, we define a new type of functions called aq-open functions, which is stronger than quasi a-open and hence strongly a-open, and we obtain some characterizations and properties for it. It is shown that the graph of f, G ( f ) is (a, q)-closed graph if and only if for each filter base Y in X q-converging to some p in X such that f (Y) a-converges to some q in Y holds, f ( p) = q.
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
41
56
https://csmj.mosuljournals.com/article_163994_9c285194b6fd588c381deee741124108.pdf
dx.doi.org/10.33899/csmj.2007.163994
On Rings whose Maximal Essential Ideals are Pure
Raida
Mahmood
College of Computer Sciences and Mathematics
University of Mosul, Mosul, Iraq
author
Awreng
Mahmood
College of Computer science
and Mathematics,
University of Mosul
author
text
article
2007
eng
This paper introduces the notion of a right MEP-ring (a ring in which every maximal essential right ideal is left pure) with some of their basic properties; we also give necessary and sufficient conditions for MEP – rings to be strongly regular rings and weakly regular rings.
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
57
62
https://csmj.mosuljournals.com/article_163995_6d822e2ca46cf5ad8ba3a72a5f167060.pdf
dx.doi.org/10.33899/csmj.2007.163995
On Rings Whose Principal Ideals are Generalized Pure Ideals
Husam
Mohammad
College of Computer Sciences and Mathematics
University of Mosul, Mosul, Iraq
author
text
article
2007
eng
This paper , introduces the notion of a right PIGP-ring (a ring in which every principal ideal of R is a GP-ideal ) with some of their basic properties ; we also give necessary and sufficient conditions for PIGP-rings to be a division ring and a regular ring .
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
63
68
https://csmj.mosuljournals.com/article_163996_c76dcfef04a2db7a63d194baf278b728.pdf
dx.doi.org/10.33899/csmj.2007.163996
On the Wiener Polynomials of Some Trees
Ali
Ali
Academic Professor
University of Mosul, Mosul, Iraq
author
Ahmed
Ali
College of Computer Sciences and Mathematics
University of Mosul, Mosul, Iraq
author
text
article
2007
eng
The Wiener index is a graphical invariant which has found many applications in chemistry. The Wiener Polynomial of a connected graph G is the generating function of the sequence (C(G,k)) whose derivative at x=1 is the Wiener index W(G) of G, in which C(G,k) is the number of pairs of vertices distance k apart. The Wiener Polynomials of star-like trees and other special trees are found in this paper; and hence a formula of the Wiener index for each such trees is obtained .
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
69
83
https://csmj.mosuljournals.com/article_163997_6ee1803663df0652dc36498fa708e139.pdf
dx.doi.org/10.33899/csmj.2007.163997
Connectable Internet Address Object Point using the Active Accessibility
Mohammed
Hasan
College of Computer Sciences and Mathematics
University of Mosul
author
Manar
Ahmed
College of Computer sciences and Mathematics
University of Mosul, Iraq
author
text
article
2007
eng
This paper focuses on how building application components using Visual Basics that are accessible to people or computer users from client with disabilities. The main purpose of it is to perform a job by the server that can't be used by some with a disability essentially denies that otherwise qualified person job. An application was designed through connection point by the COM+ programming. The application performs a security for both the client and server computers and have the ability of disable option to prevent the user from making trouble in the computer.
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
85
94
https://csmj.mosuljournals.com/article_163998_9be326d0b7e507c6d07e6e76d0b94373.pdf
dx.doi.org/10.33899/csmj.2007.163998
The Prime Spectra of Regular Rings
Nazar
Shuker
College of Computer sciences and Mathematics
author
Abdul
Mohammad
College of Education
University of Mosul, Iraq
author
Huda
Khalil
College of Basic Education
author
text
article
2007
eng
In this work, we study the prime spectrum of regular rings. Also we study some topological concepts as quasi-compact, compact, totally disconnected, and irreducible topological space in order to prove some new results on the prime spectrum of regular ring.
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
95
106
https://csmj.mosuljournals.com/article_163999_8cbef4f18299d961c66665de91e4227f.pdf
dx.doi.org/10.33899/csmj.2007.163999
Using Mask Technique and Center Detection for Congenital Dislocation of the Hip (CDH) Diagnosis
Nidal
AL-Assady
College of Computer Sciences and Mathematics
author
Mafaz
Khalil Alanezi
College of Computer Sciences and Mathematics
University of Mosul, Mosul, Iraq
author
Shahla
Ahmad
Dentistry College
University of Mosul, Iraq
author
text
article
2007
eng
The aim of this study, is the diagnosis of Congenital Dislocation of the Hip (CDH) from routine X-Ray Image by measuring the retardation of the growth center of the head of femur bone in the abnormal joint in comparison with the normal side in cases of unilateral CDH using Mask Technique and algorithm of Center Detection and measurement. What is new about this study in comparison with the previous methods about diagnosis of CDH (which used artificial technique images matching subject to detect the diseased image only by compare the diseased images with normal image without giving any percent of disease) can be summarized by:
1.Going into the details of the X-Ray and cutting out the necessary parts ( head of femur ) for both the diseased and normal sides in cases of unilateral CDH, to make comparison between them instead of using the complete image.
2.Using Mask Technique and algorithm of Center Detection to extract the features (Center, Intensity value of the center, and Diameter ) from the two captured images. Then we do a comparison for both sides for these features using Euclidean Distance to know the diseased side from the normal one.
We applied this system in computer using Matlab 7.0 programming Langue.
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
107
122
https://csmj.mosuljournals.com/article_164000_538b39c83dd8f80fbba04d3e5129f7cd.pdf
dx.doi.org/10.33899/csmj.2007.164000
Enriched Algorithms for Large Scale Unconstrained Optimization
Abbas
Al-Bayati
College of Computer Sciences and Mathematics
University of Mosul, Mosul, Iraq
author
Omar
Mohammad
College of Computer Sciences and Mathematics
University of Mosul, Iraq
author
text
article
2007
eng
A new method for solving Large-Scale problems in the unconstrained optimization has been proposed in this research depending on the BFGS method.
The limited memory is used in the BFGS method by multiplying the BFGS matrix by a vector to obtain vectors instead of matrices and only two vectors can be stored, by modifying the algorithm given by Nocedal J (1999).
The purpose of this algorithm is to enable us to solving the Large-Scale Problems, as it is obvious to everyone that the computer can store millions of vectors, whereas its ability in storing matrices is limited.
The present method in this research is applied on seven nonlinear functions in order to evaluate the method efficiency in the numbers of iterations (NOI), number of functions (NOF) and function value and comparing it with the standard BFGS method after updating.
This method has been applied on functions with variables till 1000000 and more than that.
From comparing the results, we fined that this algorithm was the best.
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
11
37
https://csmj.mosuljournals.com/article_164001_055867937feab4751cd86e443e8dbe02.pdf
dx.doi.org/10.33899/csmj.2007.164001
Numerical Solution and Stability Analysis of the Sine-Gordon Equation
Saad
Manna
College of Computer Science and Mathematics
University of Mosul, Iraq
author
Norjan
Juma
College of Computer Science and Mathematics
University of Mosul, Iraq
author
text
article
2007
eng
The Sine – Gordon equation has been solved numerically by using two finite differences methods: The first is the explicit scheme and the second is the Crank – Nicholson scheme. A comparison between the two schemes has been made and the results were found to be : the first scheme is simpler and has faster convergence while the second scheme is more accurate . Also , the stability analysis of the two methods by the use of Fourier (Von Neumann) method has been done and the results were found to be : The explicit scheme is conditionally stable if and the Crank–Nicholson is unconditionally stable .
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
39
56
https://csmj.mosuljournals.com/article_164002_4f2763aa77b4c29810dcede770b819b8.pdf
dx.doi.org/10.33899/csmj.2007.164002
Speech Files Compression Based on Signal Feature
Khalil
Alsaif
college of computer science and mathmatic/mosul university
author
Saja
Mohammed
University of Mosul/ College of Computer Science and Mathematics
author
text
article
2007
eng
In this research a new algorithm was suggested for compressing speech files added a new style for storing signals, The suggested idea of compression begins with recording the speech via the microphone, then starting the proposed processing steps as follows :
Removing silent period.
Select the number of resulted signal samples.
Segmenting the resulting signal to number of frames.
Applying one of the curves fitting algorithms and obtaining the coefficients for the mathematical representation.
Storing the results in a new file format with .ssc (Speech Signal Compression) extension.
While the decompression process consisted of the reversal compression process steps, the signal is reconstructed using curve fitting coefficients which were stored in the new file, followed by returning the selected sample, then returning the silent period to their original location and finally listening to the retrieved speech signal. When the proposed algorithm had been applied on the files with different speech contents, the compression ratio was approximately (16.283%), and the ratio of SEGSNR was approximately (25.195dB).
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
57
79
https://csmj.mosuljournals.com/article_164003_72bd9a88ef5f0246ed99c2f18c082c09.pdf
dx.doi.org/10.33899/csmj.2007.164003
Using genetic Algorithm in Task scheduling for Multiprocessing System
Asmaa
Hammo
College of Computer Sciences and Mathematics/University of Mosul
author
Ghosun
Basheer
College of Computer Sciences and Mathematics
University of Mosul, Iraq
author
Muna
Jawhar
College of Computer Sciences and Mathematics
University of Mosul, Iraq
author
text
article
2007
eng
In this work we use Genetic Algorithm for best section to implement many independent tasks on multiprocessor systems. The chromosome represented by numbers of integer value, every value represents one of the processors in the system, we use the simple crossover to generate the next population, and we us the mutation of type partial gen for mutation which has a good role to improve results of scheduling, the program written by matlab (6.5).The results, after a small number of iterations, were very good .
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
81
98
https://csmj.mosuljournals.com/article_164004_2c4e44f461df42fbdd6d735fc828748f.pdf
dx.doi.org/10.33899/csmj.2007.164004
Examination Committee Work Management System
Abdul
Suleiman
College of Computer Science and Mathematics
University of Mosul, Iraq
author
Turfa
Hamed
College of Computer Science and Mathematics
University of Mosul, Iraq
author
Nadia
Saleh
College of Computer Science and Mathematics
University of Mosul, Iraq
author
text
article
2007
eng
The aim of this paper is to design a software for examination committee work management using Visual FoxPro programming language, which is considered as one of the most popular and useful visual programming languages that supports Database Management System (DBMS).
This software is designed to facilitate the management of examination committee work to assist the documentation for the important data like card files and records and to retrieve examination information.
The software has the ability to display the students’ marks after data insertion. These data are gained from Microsoft Excel tables. In addition, the software could compute the annual total marks, the final marks, the average, and the estimation. Besides it could search the database for a specified student name. The students’ marks, the final results, and the sequence and estimation for passed students could be organized as a printing material. Also the software gives printed reports for first semester, midyear, second semester, and annual total marks, for all studied subjects of a specified stage and according to that stage classes. In addition to the capability of statistical computing for the pass ratio, total number of students and the number of passed students according to the stage, with printed capabilities.
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
99
118
https://csmj.mosuljournals.com/article_164005_7c83eea0fec47a10d04e2b3c99ff13be.pdf
dx.doi.org/10.33899/csmj.2007.164005
Numerical Analysis of the Burger Equation using Finite Differences
Saad
Manna
College of Computer Science and Mathematics
University of Mosul, Iraq
author
Badran
Salem
College of Basic Education
University of Mosul, Iraq
author
text
article
2007
eng
The Burger equation had been solved numerically by using two finite differences methods. The first is explicit scheme method and the second is Crank–Nicholson method. A comparison had been made between the two and we find that the Crank–Nicholson method is the best and most accurate than the explicit scheme method, as it is shown in (Table 1). Also the numerical stability for both methods has been made, the explicit scheme method is conditionally stable and the condition is , while Crank–Nicholson method is unconditionally stable.
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
119
132
https://csmj.mosuljournals.com/article_164006_3341b5423a97e5e288c5b4fefe1a5ab8.pdf
dx.doi.org/10.33899/csmj.2007.164006
Using Computer in Primary Education
Shaima
Al-Mashhadani
College of Computer Science and Mathematics
University of Mosul, Iraq
author
text
article
2007
eng
This research develops a new program to teach (reading, mathematics, and sciences for the first primary class in Iraq and with simple and interactive techniques where the computer is considered as one of the most popular electronics innovations that convey humanity into vast fields.
Accordingly, numerous life fields have been affected with the revolutionary effectiveness related to it, and hence, it becomes a significant device, which cannot be neglected at all.
Having a quick look at the computer and its educational utilizations, one could recognize that theComputer Assisted learning system is nowadays the most common educational contribution in the learning process.
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
133
147
https://csmj.mosuljournals.com/article_164007_51714d6efd487495391c3d65b97b095d.pdf
dx.doi.org/10.33899/csmj.2007.164007
Flow in Inclined Thin Liquid Films with no Inertia Force
Joseph
Abdel-Ahd
College of Education
University of Mosul
author
Hikmat
Mustafa
College of Education
University of Mosul
author
Khidr
Khidr
College of Science
University of Kirkuk
author
text
article
2007
eng
In this paper we have investigated viscous flow in symmetric thin liquid films which are inclined by an inclination angle to the horizontal for an incompressible liquids in two dimensions with no inertia force. We use the (Navier-Stocks) equations and we obtain equations that govern such flow and we solved these equations by numerical methods to obtain the thickness of the film.
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
149
159
https://csmj.mosuljournals.com/article_164008_e4d33df52744af89c17492311a9b0387.pdf
dx.doi.org/10.33899/csmj.2007.164008
Steganographic Algorithm in Spatial Domain
Dujan
Taha
College of Computer Sciences and Mathematics
University of Mosul, Iraq
author
Ghada
Tahir Qasim
College of Computer Sciences and Mathematics
University of Mosul, Mosul, Iraq
author
text
article
2007
eng
This research deals with design and implementation of a new steganographic algorithm to hide secret messages inside digital images. To achieve security to the transmitted messages, a secret key is used to prevent unauthorized persons from extracting these messages.
Embedding has been achieved using grey and color images as a cover. Matlab is used to implement the algorithm due to the facilities it provides for dealing with digital images and matrices as well as GUI.
Finally, experimental results demonstrate the effieciency of the algorithm in hiding information in imperceptible manner.
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
160
176
https://csmj.mosuljournals.com/article_164009_0b498cc8ac9ce4d902f61f0c3162369e.pdf
dx.doi.org/10.33899/csmj.2007.164009
Using Digital Image Processing for Studying Hydrological Behavior of Tigirs River at Mosul City
Muhammad
Omar
Remote Sensing Center
University of Mosul, Iraq
author
Khattab
Mustafa
Remote Sensing Center
University of Mosul, Iraq
author
text
article
2007
eng
Recently, the applications of the remote sensing increased in hydrology studies and waters management especially that concerned with rivers basins. This research includes using digital image processing applications on Mosul images for studying hydrological behavior of Tigirs river at mosul city. By the application of a set of operations that belong to digital image process, which include preprocessing and enhancement images.
The result of these applications showed a perfect image covering all river in the study area, with high contrast ratio equal (2.455) and with a small error equals (0.099). as well as getting four segments for Tigers river which represent the changes in the state and capacity of the river.
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
177
192
https://csmj.mosuljournals.com/article_164010_65879cec55dd4eed5ba126497c4e5395.pdf
dx.doi.org/10.33899/csmj.2007.164010
Development Hyper Algorithm for Encryption Arabic Text using Mors Code
Najla
Dabagh
College of Computer Science and Mathematics, University of Mosul, Iraq
author
Melad
saeed
College of Computer Science and Mathematics
University of Mosul, Iraq
author
Subhi
Hamadi
College of Computer Science and Mathematics, University of Mosul, Iraq
author
text
article
2007
eng
Morse code is considered as one of the codes that are used to transfer information among long distant areas.
The research concentrates on Morse code applications, transmissions to overcome weakpoints, a necessary mixture between coding and cryptography to get benefits from the properties of each one of them to increase the secrecy of morse code transmission.
Anew algorithm was put in use for encryption and decryption which passes through multistage process, each stage has special properties that make the transmission more confident and safer than the stage before.
In addition to the ability of using password as a key, which is at the same time passed through the same encryption processes which make it hard to break.
This work is applied on integrated programming environoment which is (MATHCAD).
AL-Rafidain Journal of Computer Sciences and Mathematics
University of Mosul
1815-4816
4
v.
1
no.
2007
193
209
https://csmj.mosuljournals.com/article_164011_dfe2aa2e3c5b87eb58f2edf6abfbdb34.pdf
dx.doi.org/10.33899/csmj.2007.164011