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Journal of Kufa for Mathematics and Computer

مجلة الكوفة للرياضيات والحاسوب

ISSN: 11712076
Publisher: University of Kufa
Faculty: Mathematics and Computer Science
Language: Arabic and English

This journal is Open Access

About

Description of The Journal
The Journal is one of the major contribution to the Scientific Research Programmes at University of Kufa. It is published by Faulty of Mathematics and Computer Sciences at the University of Kufa.
The Journal is mainly concern with publications of a high quality researches that meet the publication conditions in a specialist of Mathematics and Computing. It is quarterly journal, to include two numbers during a year (paper and electronic).
The journal release its first issue successfully in April 2010, followed by four other numbers that contain several papers submitted for publication, of which many papers presented and accepted by our first scientific conference held by our faculty, entitled “Recent Trends in Information Technology and Mathematics for the period 13-14 April 2011 .
The last number V is dedicated to papers presented and accepted at our second scientific research conference, entitled “The First International Scientific Conference for Information Technology , Telecommunications and E-learning for the period 24 – 25 April 2012. The Conference is held by our faculty in co-operation with College of Education for Girls and College for Education, and Research Centre for Information Rehabilitation.

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الهاتف الخاص بالمجلة/07601504330
magazine.csm@uokufa.edu.iq البريد الالكتروني

Table of content: 2014 volume:2 issue:1

Article
Design an Engineering Model of Electronic Instructional Content
تصــميم أنمــوذج المهندس محـــتوى تعليمـي الكترونـي

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Abstract

There was a need to employ e-learning systems in accordance with the model helps resolve problems facing application, using some limited models employ educational technology in e-learning systems. Therefore suggested in this new paradigm design search called (Engineering Model) for an educational content, the words on the basis of building a database of electronic educational pieces can be loaded on the e-learning system, or in the absence of necessary laboratory, can be executed on the internal computer network. Model consists of twelve steps, revolves around three main axes: learning as a source of information, the second axis, the mixed teaching and teaching management the third axis. Design model in that search, one of the types of designs branching (Branching Backward), where the reverse transition between analyses field, evaluation, and follow-up. Through several Arab and foreign models, it was found that the most important point in the design of an instructional content is to be simple, and has the ability to navigate forward or go back or go to any point in the program.ظهرت الحاجة إلى توظيف منظومات التعليم الإلكتروني وفق أنموذج يساعد في حل المشكلات التي تواجه تطبيقه، حيث استخدمت بعض النماذج المحدودة لتوظيف تكنولوجيا التعليم في منظومات التعليم الإلكتروني. لذا فقد اقترح في هذا البحث تصميم أنموذج المهندس لمحتوى تعليمي الكتروني، تعتمد مفرداته على أساس بناء قاعدة بيانات لقطع تعليمية إلكترونية يمكن أن يتم تحميلها على منظومة التعليم الإلكتروني، أو في حال عدم توفر المختبرات اللازمة، فيمكن تحميلها على شبكة الحاسوب الداخلية. يتكون الأنموذج من أثنى عشرة خطوة، تدور حول ثلاثة محاور رئيسية هي:التعليم الإلكتروني كمصدر للمعلومات، المحور الثاني التدريس المتمازج، والمحور الثالث إدارة التدريس.يعتبر تصميم الأنموذج في هذا البحث، أحد انواع التصاميم المتفرعة (التفرع الخلفي)، حيث تجري عملية الانتقال العكسي بين التحليل الميداني، والتقويم، والمتابعة. ومن خلال عرض العديد من النماذج الاجنبية والعربية، فقد تم التوصل الى إن أهم نقطة في تصميم محتوى تعليمي الكتروني هو أن يكون بسيطاً، وله القدرة على التنقل للأمام أو الرجوع للخلف أو الذهاب الى أي نقطة في البرنامج.


Article
SOLUTION OF SECOND ORDER PARTIAL DIFFERENTIAL EQUATIONS WITH VARIABLE COEFFICIENTS
حل المعادلات التفاضلية الجزئية من الرتبة الثانية ذات المعاملات المتغيرة

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Abstract

Our aim in this paper is to solve some special types of second order partial differential equations with variable coefficients and the general form: Such that , , , , and are functions of and , by using the assumption . This assumption will transforms the second order partial differential equations to first order linear ordinary differential equations with two independent functions and . الهدف من هذا البحث هو حل المعادلات التفاضلية الجزئية من الرتبة الثانية ذات المعاملات المتغيرة التي صيغتها العامة : حيث ان , , , و دوال بالمتغيرين و . باستخدام التعويض الذي يحول المعادلات التفاضلية الجزئية من الرتبة الثانية الى معادلات تفاضلية اعتيادية خطية من الرتبة الاولى بالدالتين المستقلتين و


Article
Solving Some Kinds of Non-Linear Homogeneous Ordinary Differential Equations of Second Order

Authors: AtheraNemaKathem
Pages: 6-13
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Abstract

In this paper ,we will find the solution of some kinds ofhomogeneous non-linear ordinary differential equations of second order which are defined as the following "The equation that each degree of any term in it is equal in the degree with the other termsin its dependent variable and derivatives ".Specific assumptions is used to find the general solution of these kinds of equations, this assumption transforms the non-linear differential equations of second order to the simple formula of differential equations of first order . في هذا البحث سنجد الحل لبعض ألأنواع من المعادلات التفاضلية الاعتيادية اللاخطية ذات الدرجة المتجانسة منالرنبةالثانية والتي نستطيع ان نعرفها كالاتي "المعادلة التفاضلية الاعتيادية التي درجة كل حد فيها تكون مساوية لدرجةحدودها الاخرى في منغيرهاالعتمد واشتقاقاته " .نعويض محدد يستخدم لأيجاد الحل العام لهذه الانواع من المعادلات وهذا التعوبضيحول المعادلات التفاضلية اللاخطية ذات الرتبة الثانية الى معادلات تفاضلية من الرتبة الاولى .


Article
Evaluation of Double Integral with Continuous Integrands by using Method
إيجاد قيم التكاملات الثنائية ذات المكاملات المستمرة عدديا باستخدام طريقة

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Abstract

The aim of this search is to evaluate double integral numerically with continuous integrands .And we choose Trapezoidal method (one of the Newton-Cotes formulas)to use it with respect to the two dimension. (interior x and exterior y).Also we will use Romberg Acceleration to improve the results with respect to accuracy and the number of subintervals that is used it and the time . We will use the symbol RTRT to this method where as R meaning Romberg acceleration and T Trapezoidal method هدفنا في هذا البحث حساب قيم تقريبية للتكاملات الثنائية عدديا والتي مكاملاتها مستمرة . وقد قمنا باختيار قاعدة شبه المنحرف والتي هي احدى صيغ نيوتن – كوتس وتم تطبيقها على كلا البعدين (البعد الداخلي x والبعد الخارجي y ) وقد استخدمنا تعجيل رومبرك وذلك لتعجيل التقارب Accelerating Convergence وللحصول على نتائج أفضل من حيث الدقة وعدد الفترات الجزئية المستخدمة والوقت المستغرق وسنرمز لهذه الطريقة بالرمز حيث طريقة تعجيل رومبرك و قاعدة شبه المنحرف .


Article
Stability of Linear Large Scale System

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In this paper the stability of linear large scale systemis studied, by using definite matrices. The concept of family of linear systemis introduced, by using permutation matrices. A proposition is introduced to study the linear system in the large.


Article
بناء أنموذج برمجه لا خطية لتحقيق أفضل الخدمات الطبية الممكنة للمرضى الراقدين في المستشفيات

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Iraqi hospitals try to get good medical service of high quality through analyzing the cost and specifying the actual requirements in human resources, equipments and financial allocation needed in this hospitals In this paper, a nonlinear programming model was developed to obtain an optimal utilization of the available medical resources(human and equipments) in the emergency department in Al-yarmouk hospital according to model results a plan can be implemented to distribute the available resources in an optimal manner to achieve many goals. تهدف المستشفيات العراقية إلى تقديم خدمات طبية جيدة وعالية الجودة إلى المراجعين من خلال الاستخدام الأمثل للموارد المتاحة في المستشفيات والذي يتم عبر تحليل التكاليف وترشيدها وتشخيص الاحتياجات الفعلية التي تحتاجها هذه المستشفيات سواء الاحتياجات في الموارد البشرية والمعدات والتخصيصات المالية المطلوبة. تم في هذا البحث بناء أنموذج برمجه لا خطية لتحقيق الاستخدام الأمثل للموارد المتاحة (البشرية و المعدات( لقسم الطوارئ في مستشفي اليرموك التعليمي. وبموجب النتائج التي تم الحصول عليها من حل الأنموذج يمكن لأداره المستشفى وضع خطه لتامين هذه الاحتياجات وسد النواقص الموجودة في احتياجات القسم الفعلية واستغلال الموارد المتاحة إلي قسم الطوارئ بشكل امثل لتحقيق أهداف المستشفي لتقديم أفضل خدمه طبية الى مراجعي المستشفى


Article
PROPOSED METHOD OF INFORMATION HIDING IN IMAGE
طريقة مقترحة لإخفاء البيانات في الصور الرقمية

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Information hiding techniques have recently been useful in a many application areas, there are many techniques to achieve hiding data, and hiding text inside image is one field of them. In this paper we hiding our data in round of image without changing the details of image. The basic idea of the paperis to present a method that hides information in cover image using Least Significant Bit (LSB) oflight part of image (.jpg) and codingmethod along with encryption so as to increase the security. الإخفاء في الصور الرقمية من التقنيات الحديثة وتستخدم في مجالات عدة, منها الإخفاء النصوص داخل الصور الرقمية.في هذا البحث تناولنا طريقة مقترحة للإخفاء في محيط الصور الرقمية دون التغيير في المحتوى الداخلي للصورة وذلك باستخدام اقل بت ذات تأثير في جزء الإضاءة من صور ذات الامتداد واستخدمنا تشفير النص قبل إخفاءه في هذا البحث (jpg)


Article
T- SEQUENTIALLY ABSOLUTELY CLOSED SPACES

Authors: Hadi J. Mustafa --- Zahra Ismaal Salman
Pages: 28-30
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In this work, we introduce the concept of T- sequentially absolutely closed spaces which is a generalization of the concept of sequentially absolutely closed spaces [1]. Several properties of this new concept are proved.في هذا العمل قدمنا مفهوم T- الفضاءات المغلقة تماما المتتابعة التي هي تعميم لللفضاءات المغلقة تماما المتتابعة. برهنا مجموعة الخصائص الجديدة لهذه الفضاءات.


Article
Certain results on a class of multivalent functions of power order defined by a linear integral operator

Authors: WaggasGalibAtshan --- Ahmed sallalJoudah
Pages: 31-38
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Abstract

By using a linear integral operator , a class of multivalent functions of power order is introduced. Some important results of this class such as coefficient estimates , integral means inequalities and other property are found.


Article
(k,n,f)-arcs of Type (n-11,n) and monoidal (k,n,f)-arc in PG(2,11)

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Thepurpose of this work is to construct an examples of (k,n,f)-arcs of type (n-11,n) when the points of weight zero are greater than or equal seventy. We constructed a monoidal(k,n,f)-arc when the points of weight zero form a (110,11)-arc of type (10,121,2), also we constructed a maximum(100,10)-arc of type (30,100,3) in PG(2,11). Finally, we proved that there are(k,n,f)-arcs of type (n-11,n) when the points of weight one lies on only one n-weighting line of (k,n,f)-arcsand the points of weight two lies on exactly two n-weighting lines of (k,n,f)-arcs.


Article
Parameter Estimation of Binomial distribution using T.O.M with Exponential Family

Authors: Jubran Abdulameer K
Pages: 48-51
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In this research we will estimate the parameter of binomial distribution that has exponential family using T.O.M (Term Omission Method) and compare it with (MLE) method using MSE (Mean Square Error) with simulation.


Article
On Geometry of Viasman-Gray Manifold

Authors: Habeeb M. Abood --- FatinA.Rejab
Pages: 56-63
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In this paper, we studied the geometric structure of one important class of almost Hermitian manifold which is called Viasman-Gray manifold. This manifold is a generalization of the classes nearly Kahler manifold and the locally conformal Kahler manifold. We provedthat, if MisViasman-Gray manifold with flat conformal curvature tensor, then M is a manifold of class R_1if and only if,Mis a manifold of flat Ricci tensor. The necessary condition that M is of zero scalar curvature tensor has been found. Finally, we proved that,ifM is VG-manifold of class W_1 and of flat Ricci tensor then MisKahler manifold.


Article
Dominating Sets and Domination Polynomial of Complete Graphs with Missing Edges

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Let be a simple graph. set is a dominating set of , if every vertex in is adjacent to at least one vertex in . Let be complete graph with order n. Let be the family of dominating sets of a complete with cardinality , and let . In this paper, we construct , and obtain a recursive formula for . Using this recursive formula, we consider the polynomial , which we call domination polynomial of complete graphs and obtain some properties of this polynomial.


Article
Analysis and Detection the Computer Script Worms

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A Script worm is defined as a self-replicating and self-containing malicious scripting program that can copy itself to remote computer in network and execute automatically. In our work, we surveyed different types of script worms according to their spreading method like Drive, Email, Network and Chat script worms, and analyzed the characteristics of their source codes during the target finding and propagation phases of a worm’s life cycle. From analyzing process, we extracted general objects and methods that are mostly used by different types of script worms and established the malicious common fixed patterns from them. Analyzed source code and extracted malicious patterns enable us to identify the behavior of worms that could be helpful in developing a broad spectrum of Anti-Script worm system software to detect and remove script worms. When we implemented the proposed Anti-Script worm on the large number of the mentioned above script worms, we saw that this system could detect and remove nearly all the known and unknown script worms. Furthermore, the proposed system could distinguish between the malicious scripts and the benign script files that contained the suspicious objects and methods by checking all commands in every script files.


Article
THE COMPACT OF THE COMPOSITION OPERATOR

Authors: Ammar Ali Neamah --- Aqeel Mohammed Hussein
Pages: 76-81
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Let U denote the unit ball in the complex plane, the Hardy space is the set of functions holomorphic on U such that with denotes the Taylor coefficient of f . Let  be a holomorphic self-map of U, the composition operator induced by  is defined on by the equation We have studied the composition operator induced by the bijective map  and discussed the adjoint of the composition operator .We have look also at some known properties of composition operator and tried to get the analogue properties in order to show how the results are changed by changing the map  in U. In order to make the work accessible to the reader , we have included some known results with the details of the proofs for some cases and proved some results.


Article
The Complete Solution of some Kinds of Linear Third Order Partial Differential Equations with Three Independent Variables

Authors: Layla Abd Al-Jaleel Mohsin
Pages: 82-90
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Our aim of this research is to find the complete solution of some kinds of linear third order partial differential equations of constant coefficients which have the general form where are constants. By use the assumption will transform the above equation to the nonlinear second order ordinary differential equation with three independent functions .


Article
V-SEMI-CONNECTED SPACES

Authors: Aqeel Ketab Mezaal Al-khafaji
Pages: 91-94
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This paper introduces a new topological concept of v-semi-connected spaces which depends on the worksofHamza[6] and Dorsett[4].This space is stronger than the semi-connected space, that is every v-semi-connected space is a semi-connected space but the converse is not always true as well as giving the condition that make the converse is true which is the semi-normality. We prove thatthis property is a topological property.


Article
Alpha Star Generalized ω - Closed Sets in Bitopological Spaces

Authors: Qays Hatem Imran
Pages: 95-102
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The aim of this paper is to introduce the concepts of alpha star generalized ω - closed sets, alpha star generalized ω - open sets and study their basic properties in bitopological spaces.


Article
Weighted (k,n)–arcs of Type (n-4,n) in PG(2, 8)

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The main purpose of this paper is to construct a (k,n;f)-arcs of type (n-4,n)in projective plane of order 8. We proved that there exist(66,16;f)-arc of type(12, 16)whenthepointsofweight0forma(7,3)-arc of type(7, 0, 42, 24 ) and(66,15;f)-arc of type(11, 15)when the points of weight 0 form (7, 3)-arc of types (3, 12, 30, 28) and (2,15,27, 29).


Article
ARTIFICIAL NEURAL NETWORK IMPLEMENTATION FOR SOLVING LINEARPROGRAMMING MODELS

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This work does not use the classical methods (simplex method, Branch and Bound techniques) which were normally used for solving Linear programming models. The proposed algorithm was considered for implementation with Artificial Neural Network (ANN) using MatLab tool box. It was found that implementation of the neural network will provide comprehensive results when applied with any linear programming models. Besides Artificial Neural Networks are artificial intelligence methods for modeling complex target functions, and are considered to be among the most effective learning methods currently known. Implementation in solving linear programming models became very interesting, as ANNs became appropriate solution where a huge data (number of variables and constraints) is considered. In this work, general model of ANN specified for solving the problem of linear programming will be shown and discussed.The results show a great improvement in prediction of results with a minimum percentage error.

Table of content: volume:2 issue:1