Al-Rafidain University College For Sciences

The open communication network, Internet, has problems surrounding the security of the Internet sites. Such as hacker intrusion costing organizations a large amount of money and untold losses in productivity; hate groups using the Internet to distribute their malicious works to these sites, and many other types of attacks. A firewalls strategies protect Internet sites from intentional hostile intrusion that could compromise confidentiality or results in data corruption or denial of service.

This research would build a firewall against the unauthorized intruders, viruses which have specified signatures, worms and Trojan horse. Depending on the dual bastion host configuration for the web hardware, packet filtering firewall, detect the IP impersonate attack (by both worm and Trojan horse to enter the web as authorized IP) by the proposed SYN/ACK checkup procedure and last install a virus scanner for the data in all packets of the session by the proposed procedure which is three handshaking proxy procedure.

When we try to extract information from a database, we need tools to help us find what's relevant and what's important and to explore different scenarios. A report, whether printed on paper or viewed on-screen, is at best a two-dimensional representation of data, a table using columns and rows. That's sufficient when we have only two factors to consider, but in the real world we need more powerful tools. On-Line Analytical Processing (OLAP) is a category of software technology that enables analysts, managers and executives to gain insight into data through fast, consistent, interactive access to a wide variety of possible views of information that has been transformed from raw data to reflect the real dimensionality of the enterprise as understood by the user. An OLAP system can be modeled by a three-level architecture that consists of a Query Client, a Data Cube engine and a Data Warehouse or Relational DB.
In this paper we introduce a Client Graphical Application Interface to Design & Create Local Cube from relational database and to connect to SQL Analysis Service OLAP Cube Server to make complex queries, switch from summary to detail data, and filter or slice data into meaningful subsets.

This paper presents a new method on separate the overlapped character of handwritten and printed Arabic script. The method depends on vertical scan and region growing method, region growing procedure that starts with a set of seed pixels. The aim is to grow a uniform and connected region from each seed. Applied to cursive Arabic script, where ligatures, overlap and style variation pose challenge to the recognition system.
Keywords: Arabic character segmentation, optical character recognition (OCR), overlapped Arabic character.

One of the common techniques in analyzing multivariate data is analyzing of the principal components. This transforms large number of related variables into lesser number of no related components (PCA).
In case of existence of outliers, which can be detected in several ways, then
the dependence of variance and ordinary covariance matrices, also correlation matrix, would lead to misleading results in analyzing the principal components.
The aim of this research is to introduce a new and fast algorithm in analyzing the robust principal components; when data contain outliers, while conventional methods fall in detecting outliers in data; then the results are misleading. The method is implemented to show its real effectiveness on variables affecting the increase of aluminum level in blood.

One of the most difficult tasks in image processing is the determination of a suitable set of features which can be used to segment images. In this research, the standard deviation that represents feature of image has been used in image segmentation as indicator to determine the isolation of one object from another or an object from a background. This feature has been used by a Genetic Algorithm (GA) to become a fitness function that will help in searching process for the optimal solution. The value of standard deviation is high in the case of a difference between various diverse regions of the image and small in one region. Using this feature in maximizes the difference among different regions and minimizes the interclass variance, a GA is used to evolve a sub-image convolution kernel to produce kernel with a best features that can be used in the segmentation of image. The space-filling curve approach has been used to convert the kernel from a one dimensional (1-D) form into a two dimensional (2-D) form. The evolution process of a genetic algorithms are done on a kernel in array form, while the convolution process between a kernel and image is used a kernel in a matrix form.

In this research , we use The statistical techniques for detecting shift in quality for production in Babel – factory 2 . By application The exponentially weighted moving average (EWMA) control charts with asymptotic limits , the EWMA control charts with time- varying limits with the fast initial response (FIR-EWMA).this showed that the FIR-EWMA charts are more efficiency for detecting shift in quality

The Success of companies that execute Business within Competitive global Environment depends on the degree of compatibility between Business strategy and effective Global Information System. Each of these factors has an effect on the other. The Business strategy depends on the strong Support to their Dealers around the world applying Effective global information system.
This paper presents model for Simulation of companies in competitive Global Environment. The simulation is integrated into a large Scale competitive Global Environment model. Which includes Business strategy and Information system? An Object oriented frame work has been used as a development Platform presented results provide and insight into the population dynamics and distribution of Dealers. The transfer of Sales Quantities through the information system is analyzed with the model and some estimations are made conceding the type of sailing control found in competitive Global Environment system . By analyzing the number of companies in Global market and the dynamic of Dealers population, the trend and value of Sales in the system are estimated. This is important in determining the CGE System value of resource. The model was also used ‘to test the impact on Companies Population of different development Scenarios the Competitive global Environment (CGE) due to urban growth and development of Information system due to the development of networked computing that links number of computers and other electronic media by Tele communication network were compared to reference situation and impacts of increases in companies stock were examined.

The research aims at studying strategic risks and uncertainty at ten joint stock companies listed in Iraq stock exchange .

This has done using a transition matrix within the framework of Markov chain . the results have shown that the hypothesis of research (the probability of exposure to strategic risk and uncertainty is reduced when the competitive position of a a firm is in advanced is highly valid. This in turn , is regarded as the most important conclusion .

The appearance of the Internet is considered to be one of the major events of the last years; information become available on-line, all users who have a computer can easily connect to the Internet and search for information they want to find. The result is that everybody can read the latest news on-line and also consult digital libraries, read about firms, universities, cultural events, exhibitions, etc. So, sensitive Internet sites must be protected against the intentional hostile intrusion by strong protection systems. Althogh the strongness of these protection systems, there are alwayes vulnerabilites in them and give the intruders a big chance to penetrate the protected sites.
This research proposd a method to attack the protected site by taking the advantage of the NTFS (New Tecnology File System) and ADS (Alternete Data Stream) properties as a security holes.
This method has two steps: The first, the attacker (clean intruder) using the IP Address Spoofing Attack to make authorized access to the protected site. The secod, the clean intruder could insert any malicious programs in any others of NTFS, without any changes to these files especially their size. The result is, the clean intruder (by inserted malicious programs) will determine the holes and vulnerabilities of the protection system to penetrate the security in simple and efficient way

Integrated systems based on Inertial Navigation System (INS) and the Global Positioning System (GPS) generated increased interest in the airborne survey and remote sensing community over the past few years. Where, with full operational GPS capability, it has been recognized that an optimal combination of GPS with inertial navigation brings a number of advantages over stand-alone inertial or GPS navigation.
This paper aims at introducing GPS and INS system integration approach for fusing data utilizing wavelet analysis. Where the wavelet used to compare the sensers outputs at different resolution levels, for several types of errors in INS and GPS, to smooth and predect the INS erros.

In this research I used the Survival analysis – Kaplan – Meier Method to study the Survival time concerning the Master students for College of education and College of science for women and to get the proportion Surviving , Comulative proportion

The research is studying some of important tests, for the hypothesis statistic to the universes and Multivariate, with one sample and two sample, by using t, T2 , F , and find the Confidence interval from the means , the research using tow application the first is the college for the phys education for the women and Scand the college of administration and economic and then will compare with nine variables between

Let A be the set of solutions of a max – min product fuzzy relation equation on finite spaces. In this paper we use some algorithms to solve max – min product relation equation.

The Multiplicative Cyclic Group [3] is one of the algebraic systems which can be used to generate a various long period digital sequences with elements ranged 0..m-1, where mZ+, m  2 that’s done by using one (or more than one) primitive element(s) of the group. The generated sequences can be used in Stream Cipher Systems. In this paper, we introduce the mathematical process to generate a sequence from one generator of The Multiplicative Cyclic Group (MCG). The generated sequence may have no good statistical properties, so we suggest a two generators sequence. The two generators with some initial variables (keys) make a unit called MCG unit. A number of MCG units are combined with each other by a combining logical function to get MCG system. This paper includes some algorithms to describe the mentioned process and some tables describe the tests results of the generated sequences.

In this research a new formula of B-spline functions have been used to approximate a set of given data points for both uniform and non uniform spaced, that is when satisfy either or .

The first order B-spline , the second order B-spline and the third order B-spline have been used. In the second & third order B-spline we need the first &second derivatives at x=0, in this research we use Lagrange's interpolation polynomial & Taylor's series to find at x=0 using three point formula for both cases, i.e., uniform & non uniform spaced.

The research contains the flowchart and the algorithm that described our work with its implementation, also the program written using visual basic language.

In this paper we will design and Implement a character device driver which uses two device special files to allow a pair of processes to send short variable-length text message to each other. The driver should make sure that multiple readers and multiple writers are not permitted and also that read ( ) s will not block even when there are no messages to read and that write ( )s will not block however many messages are written before the next read ( ) occurs .This device driver is just going to control some system memory as its “hardware device” and effectively provide an extra IPC mechanism in addition to those already available.