الحاسب الآلي

خوارزميات اختيار واستخلاص الخصائص المميزة لواجهة الدماغ الحاسوبية

أنس عبدالقادر محمد هادي

Title in English: 
FEATURE SELECTION & EXTRACTION ALGORITHMS FOR BRAIN COMPUTER INTERFACE
Abstract in English: 
A brain-computer interface (BCI) is a direct communication pathway between a human brain and an external device. In other words, a BCI allows users to act on their environment by using only brain activity, without using peripheral nerves and muscles. In BCI there are many paradigms; one of them is P300 which occurs in response to a significant but low-probability event. BCI data is considered to be high in their dimensionalities which reduce the system performance. Feature selection is a dimensionality reduction technique. Feature selection techniques study how to select a subset of features that enhance the performance of the system. The reason behind using feature selection techniques include reducing dimensionality, removing irrelevant and redundant features, reducing the amount of data needed for learning, and improving algorithms’ predictive accuracy. In this thesis, three types of feature selection techniques are compared and applied. These types are filter, wrapper, and hybrid. Fisher score, Determination Coefficient (r2), Regularized Fisher Linear Discriminant (RFLD), and Bayesian Linear Discriminant Analysis (BLDA) were used as evaluation functions. Differential Evolution (DE) optimization technique was used as searching technique. Two datasets were used to evaluate the results. Filter types were the preferred to be selected as feature selection method for P300 based BCI, in particular r2. This is due to the good reduction in dimension 64.8% and low computational cost 6.75ms. The time required for training and testing the classifier was improved by 83.62%.
المؤلفون: 

Employing "Mobile Agents (MAs)" In the Internet services

Dr.Alla talal Yassin etc.
Abstract
In this paper, it is obvious show how current
technological trends may lead to present the employing of mobile agents in Internet services

Title in English: 
Employing "Mobile Agents (MAs)" In the Internet services
Abstract in English: 
Abstract In this paper, it is obvious show how current technological trends may lead to present the employing of mobile agents in Internet services because of Use of the Internet has exploded in recent years with the appearance of the World- Wide Web, and also It seems likely that, within a few years, nearly all major will be capable of hosting and willing to host some form of mobile code or mobile agents and it is also contributes towards such an evaluation and implements an Internet services using mobile agents. This paper also summarizes the advantages and disadvantages that arise in using these technological trends and discussed some of the trend deployment of mobile agent systems in internet services. It is also discuss other experiences on integrating components internet sites and applications, enabling them to receive and send agents with critical evolutionary and requirements of team work. However other experiences approach involves wrapping the components inside a Java that can be included in any internet services enables the servers to receive and send agents that can query of information. We discuss several technical and nontechnical hurdles along the path to that eventuality. A few years, nearly all major Internet sites will be capable of hosting and willing to host some form of mobile code or mobile agents. Keywords: mobile agents, internet services, Advantage of employing (MAs).
المؤلفون: 
ملف: 

فاعلية برنامج تعليمي الكتروني في تنمية بعض من مهارات الاستعداد للقراءة لدى أطفال ما قبل المدرسة

عزيزة مبارك العلوني, مريم عبد الرحمن السهلي, مهرة فارس المطيري, ندى محمد ميمني
المقدمة:

اللغة: 

أثر استخدام الحاسوب في تحصيل طلاب الصف الأول الثانوي في مقرر الفيزياء

بحث محكم منشور في مجلةالعلوم التربوية والنفسية رجب 1423

المؤلفون: 

Enhancing the DBSCAN and Agglomerative Clustering Algorithms to Solve Network Planning Problem

Title in English: 
Enhancing the DBSCAN and Agglomerative Clustering Algorithms to Solve Network Planning Problem
Abstract in English: 
It is a research in data mining field for Enhancing the DBSCAN and Agglomerative Clustering Algorithms to Solve Network Planning Problem It was published in 2009 IEEE International Conference on Data Mining Workshops

إثراء وحدة البرمجة في مقرر تكنلوجيا المعلومات في ضوء المعايير الأدائية للبرمجة وأثره على مهارة البرمجة لدى طلاب الصف الحادي عشر

أثر تجربة التعليم الالكتروني في المدارس الإعدادية المصرية على التحصيل الدراسي للطلال واتجاهاتهم نحوها

أثر استخدام برنامج حاسوبي في تدريس مادة تقنيات التعليم على تحصيل طلاب كلية المعلمين في مدينة حائل

أثر استخدام برنامج حاسوبي في تدريسمادة تقنيات
التعليم على تحصيل طلاب كلية المعلمين في مدينة
حائل.
( دراسةشبه تجريبية)

Abstract in English: 
Praise be to Allah, the All- Strong, the All-Mighty. Peace and blessings be upon the prophet of Islam, the prophet of guidance, Mohammed, Peace and prayers may be upon him, and upon his family and all his companions. The research's title: The effects of using the suggestive computer program in teaching the teaching the educational technology subject on the acquisition of the teacher college's students in Ha'el city. The research's problem was to identify the effect of the suggestive computer program on teaching the educational technology subject and its effects on the acquisition of the teacher college's students in Ha'el city. The research aima to identify the efficiency of the suggestive computer program upon the students' acquisition in the teachers' college in Ha'el City. In addition, the research aima to identify the method of overcoming the individual differences when using the traditional teaching methods in comparing with using the suggestive computer program. In addition, the research was looking for new teaching methods by using the computer programs, and the effects of using these programs in the skills of remembering and understanding, compared with the traditional teaching methods. To achieve the research's aims, the researcher used the experimental method applied upon two equivalent groups. The research designd two studying tools, the first is the suggestive computer program and the second is the acquisition test. After applying the two tools upon the research's sample of the teacher college's students in Ha'el, learning the educational technology subject (100w), the researcher used the following statistical methods; Richard Equation, Alpha Cronbach equation, the Internal Consistency , T – test, and ANOVA test. The research shows the following results: 1- There is no statistical significance (0.05) between the experimental and control groups in the level of remembering skill of Teacher college students' acquisition in Ha'el city. 2- There is a statistical significance of (0.05) between the experimental and control groups in the understanding skill of Teacher college students' acquisition in Ha'el city. 3- There is a statistical significance of (0.05) between the experimental and control groups in the skill of Teacher college students' and their acquisition level in Ha'el city. The research reaches the following important results; - Preparing more computer programs specialized in the field of teaching technology, and other elated subjects. - Holding training courses to the teaching stuff of the teacher colleges, under the supervision of the qualified computer program trainers to teach them how to use and prepare these programs. The research suggests the following points; - Performing more researches looking for the efficiency of the computer programs on the teaching technology subject and other subjects in the teacher colleges and looking for the motivations to encourage the production of these programs. In addition, the research suggests performing more studies about the effect of using the computer programs upon the selfeducation in the teaching technology subject and the other subjects of the teacher college
المؤلفون: 

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