Journal of Kufa for Mathematics and Computer

This research presents the Local and
Public Traffic Concrete Barrier software
(TCB) which work as a first defensive line
to the computer from any remotely or
locally attackers or intruders. The key
feature in the TCB software that it does
not depend or use the built in windows
firewall which is became week against the
new attacking techniques. The TCB
software can blocks all TCP process based
on rules that can be specified and saved
by the user such as base on Process Name,
Remote IP or Remote/Local Port. In order
to make the user rules unchangeable the
TCB is password protected software with
3 different security levels and it can also
Logs and save all the activity. Depending
on the user defined rules the TCB act like
a Virus/Spyware/Adware basic protector
that alerts the user when it s automatically
scans any Processes, IP or Port that
matches with the user preset rules. All the
above mentioned TCB capabilities and
features helps to keep the computer more
secure. As well it restricts information that
comes to the computer from other
computers,
providing more control over the data on the computer and providing a line of defense against people or programs (including viruses and worms) that attempts to connect to the computer without invitation (unsolicited request).Introductio

For years, people think that the major
threat to various companies' computer
networks doesn't come from outside
hackers,but from internal(often disgruntled)
employees.
However, a new study disputes that, saying that outside hack attacks are the
largest threat. In fact, the outside hackers use
the ability of messenger to not only transfer
text messages,but also to files transferring. Consequently, messengers can transfer
worms and other malicious software
( malware).
This research includes many practical
methods and tricks to attack yahoo
messenger by sending executable files that
are compressed and masqueraded, that files
are responsible for converting Yahoo! Music
and other options to malicious web site, and
also it is possible to insert messenger into
infinite loop, delete messenger after forcing
it to close, or convert its path into malicious
program path, insuring that done even after
restart computer. And also it contains
protection methods for that attack which are
responsible for disabling system program
such as (task manager, system restore, system configuration utility etc) to ensure
that the user couldn't remove the program
that caused attack.
Finally in this research, software is
designed to break that attack by enabling
system tools and that will lead to facilitate
the task of ending attack. Actually, this
software is considered as a solution to
widespread problem caused by many
malware.

The growth of new imaging
technologies has created a need for
techniques that can be used for copyright
protection of digital images. In this paper, a new and robust spread spectrum based
watermarking scheme has been proposed. The proposed scheme depend on both
Discrete Wavelet Transform (DWT) and
Discrete Cosine Transform (DCT). First, we decompose the image by DWT into a
single level. Then, the approximation part
is divided into blocks. The embedding is
done in an adaptive fashion depending on
the mean (M) of the block. A chaotic
sequence of real numbers, depends on a
secret key, is embedded as a watermark
in the DCT coefficients of the selected
blocks. Detection stage generates a
watermark which would be compared
with the original watermark, by the
correlation measure, to determine the
existing of the watermark or not. Different
tests have been experimented to explain
the transparency and the robust of the
proposed scheme.

The success of distributed multimedia
traffic presents many challenges to the
network designer, certain bandwidth as well
as bounds on delay, loss probability and
jitter in order to maintain reception quality
are issues of Constraint Base Routing
(CBR). Flow routing requires deterministic
path coordination in comparison with data
routing. This paper presents a new technique
for best CBR-rout path computation using
genetic algorithm. Available bandwidth,
delay jitter, and path availability are the
fitness function, the genetic algorithm try to
optimize. Source routed packets were
established to hold the complete elected path
in packet header. All studies made on NS2
simulator, where SARBE approach for rapid
on-line estimation of available bandwidth
shows performance optimization on OSPF
algorithm for multimedia streaming
applications.

In this paper, I present a new search engine
system to find the home page of any
university. This system ( University Search
Engine ) depends on building a database
that has information which it used to access
the home page of any university by entering
a keyword. This keyword is used to
generate a hyperlink for this university . In
fact, most students use the Internet for
accessing and using the webpages; therefore, the target of this research is to build a new
search engine that makes the students access
the home pages of the universities easily. When testing the system ( University
Search Engine ) it succeeds in accessing the
Iraqi universities ( kufa university, Baghdad
university etc) and give the exact home
pages for these universities. It is also tested
for foreign universities ( University Saine
Malaysia, University Collage Lincoln
etc), and it succeeds in giving the exact
home pages for these universities. I build my
system ( University Search Engine ) under
visual basic 6 language (VB6) and
Microsoft Access 2003.

Hand gesture recognition is a rich area
of research and covers a wide scope of
applications from human machine
interaction (e.g in games) to Deaf people
computer interface and from 3D animation
to control of mechanical systems. In this
work a new algorithm for hand gesture
recognition is proposed and evaluated. This
algorithm uses moment invariants for
feature extraction and neural networks for
classification. To evaluate the algorithm a
subset from the ASL (American Sign
Language) is used, this subset consists of
the 26 American one-handed sign language
alphabet as a training set for the system. The system then tested using images that
are different from the training set in size, orientation and position and the results for
these tests are presented and discussed.

For fixed positive integer n³3 ,let Dn be the dihedral group, Dnh= Dn ÏC2 and cf(Dnh,Z) be the abelian
group of Z-valued class functions of the group Dnh .The intersection of cf(Dnh,Z) with the group of all
generalized characters of Dnh , R(Dnh) is a normal subgroup of cf(Dnh,Z) denoted by R (Dnh),then
cf(Dnh,Z)/ R (Dnh) is a finite abelian factor group which is denoted by K(Dnh).
In this paper ,we determine the cyclic decomposition of the finite abelian factor group cf(Dnh,Z)/R(Dnh)
when n is an odd number, we find that the cyclic decomposition of K(Dnh) depends on the elementary divisor of
n ,if n= p 1
1
a
.p
2
2
a
..p
m
m
a
where p1
,p 2
,…, p m are distinct primes and
1
a ,a2
,..,am
are positive integers, then ;
K(Dnh)=
2
=1
Å
i
K(Dn)
( )( ) ( ) 1 1 1 2
1
1+ × 2 + + -
=
Å
m
i
a a L a
C2
Å
K(C4). And we find the rational valued
characters table of the group Dnh

The growth of the Internet and the World
Wide Web (WWW) has resulted in a large
number of Web Systems and Web
Applications. Today many people are relying
on Web applications like Internet banking, entertainment and E-commerce applications. They expect these applications to be
available, safe, secure and reliable. In this research, the purpose is to give an
understanding of the special characteristics of
Web Applications and the Web Engineering
process used to develop these applications. We first analyze the current state of the art of
Web applications design, stating the need for
an approach that clearly separates concerns
(conceptual, navigational, interface). Briefly
introduce the ISIRS (Instructors and Students
Information & Registration System)
application as an object behavioral model of
Web applications design.

In this work, we study S - continuous functions, a function f : X Y is called S -continuous function if the
inverse image of every semi- open set in Y
is semi open in X .Several properties of
these functions are proved.

This work discusses the compression
objects ratio for Macromedia Flash File
(SWF) Image by Wavelet functions for
compression and there effect for
Macromedia Flash File (SWF) Images compression . We discusses classification
objects in Macromedia Flash (SWF) image
in to nine types objects Action, Font, Image, Sound, Text, Button, Frame, Shape
and Sprite. The work is particularly targeted
towards wavelet image compression best
case by using Haar Wavelet Transformation
with an idea to minimize the computational
requirements by applying different
compression thresholds for the wavelet
coefficients and these results are obtained in
fraction of seconds and thus to improve the
quality of the reconstructed image. The
promising results obtained concerning
reconstructed images quality as well as
preservation of significant image details, while, on the other hand achieving high
compression rates and better image quality
while DB4 Wavelet Transformation higher
compression rates ratio without kept for
image quality .

This research is mainly concerned with
novel strategies to teach average. It looks
into the relevance understanding of some
properties of the average (the arithmetic
mean) to students general education in
order to access its importance and place in
curriculum design and to assess the effects
of different teaching strategies, materials
and media of presentation on student s
understanding of that concept.
Teaching materials were designed and put
into practice with a group of students.
One of the two groups followed the
teaching materials that was taught by us, using innovatory and various other teaching
strategies. The other group was taught it by
their usual teacher using standard teaching
methods. We compared the learning
outcome of both methods, and evaluated
teaching methods and materials.

This paper presents an approach for
analyzing data of the Information
Technology graduates according to the
employability knowledge areas in order to
predict feedback recommendations to
improve the IT programmes teaching and
learning resources and processes towards
the improvement of the programme
learning outcomes. The approach is based
on features (knowledge areas) extracted
from logged data for employment and
university graduates. Link analysis is an
efficient approach to study the correlation
and relationships between different
attributes that highly affect jobs in IT
market, including different skills areas in
both the market and the programme
curriculum, and it gives good weighted
evaluation for these knowledge areas. The
link analysis shows great relationship and
associations between these attributes
(Student Performance in Bachelor degree, analytical and development skills, Programming skills (Java, C++, C#, etc), practical skills, communication skills, and
training and certificates) and the market
demands. Data set from IT market and
university records is used to create and test
the model. WEKA was used as a software
for mining tasks.