journal of the college of basic education

This research includes the development of a self-tracking system for
solar concentrators which can increase the gained solar energy.
This system is specified by using the generated power from the solar cells
to feed the tracking system directly. In other words the electrical needed is self generated. Therefore, this system can be used in agricultural places in our country.

abstract:%0APerson's%20identification%20or%20recognition%20is%20a%20first%20problem%20step%20in%20all%20security%20systems.%20In%20these%20systems,%20Ear%20biometric%20was%20suggested%20to%20be%20a%20crucial%20tool%20for%20recognizing%20people%20in%20critical,%20important%20organizations%20and%20government%20security%20agencies.%20It%20is%20unique%20to%20each%20individual%20and%20relatively%20unchanging%20during%20lifetime.%20The%20proposed%20system%20in%20this%20study%20presents%20a%20new%20algorithm%20for%20ear%20recognition.%20It%20offers%20a%20mathematical%20model%20based%20on%20centroied%20and%20related%20cluster%20analysis%20which%20tries%20to%20find%20a%20reciprocal%20twin%20sample%20to%20the%20nearest%20neighbors%20and%20then%20they%20are%20grouped%20as%20a%20cluster.%20System%20is%20trained%20on%20individual%20subjects%20with%20the%20same%20conditions.%20Each%20enrolled%20image%20subject%20is%20converted%20to%20a%20gray%20scale.%20Experimental%20results%20reflect%20that%20the%20proposed%20system%20can%20be%20offered%2093%25%20accuracy,%20less%20complexity%20and%20can%20make%20more%20accuracy%20with%20subjects%20who%20are%20those%20have%20a%20short%20hair.

Due to the various advantages which such Bond Letters create for all its parties,we made this study to focus on this issue For this purpose,we Have divided this study into two chapters in the first chapter we Introduced the definition of bond letter in general with respect to its Parties, advantages and that it is distinguished form other similar banking Transaction. In the second chapter we studied our basic subject which is The five types of the bond letter in FICID contracts, which are: tender Entrance bond ,performance bond ,Adaned payment bond and the return of the lent machinery bond. We Introduced the definition ,significance and termination methods of each Type of such bonds in a separate section. In the first section we illustrated the legal relation from the issuance of such bonds with respect to the relation between the contractor and employer ,the relation between the contractor and the bank or the
bank and the employer and the obligations of each involved
party. We lastly found that bond Letter in FICID contracts are non- conditioned bond letters in which the bank is committed to make payments upon the request of the employer without considering any objection or protest by the contractor unless such contractor proved that there is a clear and obvious cheating and in such case he should go to court of law to get an order of imposing a provisional attachment on the bond amount in the bank .
We also recommended that there should be a code regulating the rules of The guarantee letter in Jordan as a banking system which is different from other banking system such as banking guarantees and we advised the parties dealing in this issue, the goovermment, banks, employers and contractors to use the phrase bond letters instead of bank guarantees

With the revolution of information technology and Wide Area Networking, data has become less and less private where the accesses of media as well as the attempts to change and manipulate the contents of media data have become a common case. For that, we need to use a watermarking technique to protect the copyright of the media as well as for digital right management but without leaving a visual effect. [1]

this paper studies the problem of putting data mining techniques in personalized web services as assistance tool for collaborative filtering tool of personalization. Collaborative filtering collect information for the customer from the opinion of other people in some fields, by matching the favorites of customer with others like, matching the same data and meta data, here in this article will consider the algorithm of A-prior from association rule method of data Mining as assistance tool to get collaborative filtering from the customer baskets to find out the associate things normally other customers likes to buy within their baskets.

the present work the design and development of ciphering method on colored images is studied. The method use incryption keys for ciphering and deciphering, where a random number generation program is used to produce a set of values that determine the incryption keys. In that mid point circles generating algorithmis used to locate a number of interrelated circles so as to determine the pixels to be ciphered.

fractal compression the image to be encoded is partitioned into blocks called ranges. Each range is coded by reference to some other part of the image called domain and by some affine transformation parameters. The number of ranges plays an important rule in encoding parameters. In order to obtain high compression ratio, only a small number of blocks are allowed in encoding process. In this paper we suggested a new technique called Composed Partitioning Technique (CPT) to reduce the number of partitioning blocks with keeping as much as possible the quality of the reconstructed image. CPT is used the features of both quadtree and H-V techniques, it uses the uniformity criterion to decide the range block is to be partitioned or not, then it uses a criterion that depends on both the pixel and the edges information of the image to decide the type and the direction of the partitioning and this will give a more restriction to the partitioning process.

this work presents models and analytical techniques for studying the nature of the doing system of an interrupt-driven kernel due to high packet arrival rate appeared in Gigabit networks. An analytical study is presented describing the effect of high interrupt rate on system performance.
The
performance is studying in requisites of throughput, latency, and system power.
The derived equations of system throughput, latency, system power, and
stability condition. The effect of interrupts on system performance had never been denoted to it yet analytically in the past. and this analytical work is the first of its kind. In this work is also using simulation considered both Poisson and bursty traffic with empirical packet size distribution.

The aim of this study is to produce composites of Cu -SiCp(10vol%). by using P/M method with different additions of active element like magnesium (0-10vol%) and investigating their characteristic properties..
The powders were prepared in suitable manner, blended in a ball- mill
for 2 hours for good homogeneity, then pressed in uniaxial steel die with (11) mm redius to (250)MPa. The samples were sintered in electric furence to (1100°C).Density and porosity for samples were preformed. The hardness test was investigated using Vicker microhardness (HV) tester. In addition, wear
resistance of specimens were also investigated by using a pin-on-disc type apparatus with a typical experimental plan of simultaneous variation of loads
(5,10,15)N for (10min) .It was found that the density would be increased gradually with the Mg content. The hardness and the wear performance of the composite increased with increasing volume percentage of Mg.

theory and it can apply to binary images and gray scale images, and the usual set operators can be applied to them.
The basic operation in mathematical morphology operate on two sets: the
first one is the image, and the second one is the structuring element. structuring element in practice is generally much smaller than the image, often

The aim of this research is designing and implementing proposed steganographic method. The proposed steganographic method don't use a specific type of digital media as a cover but it can use all types of digital media such as audio, all types of images, video and all types of files as a cover with the same of security, accuracy and quality of original data, considering that the size of embedded data must be smaller than the size of a cover. The proposed steganographic method hides embedded data at digital media without any changing and affecting the quality of the cover data. This means, the difference rate between cover before hiding operation and stego is zero. The proposed steganographic method hides embedded data at various locations in cover irregularly or randomly, whereas the locations of cover for information hiding are not constant, this property will increase the level of security for proposed method. In the proposed method, the sender needs sending a file that has small size via any communication channel and that considered as a key while sending a cover is not necessary to recipient if both agree about downloading it from the internet before sending a file. The contents of this file are invaluable for an attacker. The programming language that used in programming this proposed method is C++ language. Steganographically, The proposed steganographic method is strong and robust. It is possible classifying this proposed method as a public key steganography system and substitution system at the same time.

Through the experience of the researcher in the field of gymnastic as a player, international trainer and a referee of an international observation the researcher to the constant change in the skills and movements technical and that the increased difficulty and diversification in the various organs of the movements of flight or summer sold and turnover so, the researcher found that the skill summer sold side air of skills difficult and few use, regardless of it is interference from within the chains is compulsory in your balance beam as it excels in the antenna back and front hand technique and rotate the body side so the researcher to conduct research and analysis Elkinmeteki the best six players chosen on a balance beam to find the variables that occur when the player of this skill and differences between the players to gain access to the best achievement of them. Therefore, research aims to identify the body positions during the period of performance skill side air attack on a balance beam. And to identify the variables Elkinmetekip to body positions during the period of performance of the skill side air attack on a balance beam. The researcher used the descriptive method and the research sample included six best players in the world on a balance beam in 2008. The researcher has concluded a number of conclusions was the most important.

The Aim of study to perform of Effect to introduce the part
of learning on the warm up
in the lesson physical education with
Some Physiological in learning the some basic skills in volleyball
• Choose the subjects from the students of College of Physical Education from University of Al- mustansiriya and divided into groups (controlling group and experimental group), And using experimental research, and measures some Physiological (Heart rate, tow blood pressure, Breathing frequency, and proficiency of nervous system after the warm up in the lessons physical education. Conclusions it is the experimental variables take place by develop learning the some skills in volleyball,
recommendation of the research to necessary to introduc the part of learning on the warm up in the lessons physical education.

The First Section: Define the research and its importance and
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attentio aresear hamed at knowing the relatipashi he tv disconentrate
state of sitting for Wesam Al-Mahjed team in Baghdad.
Research Assumption: there is a relation with connected statiscal reference between concentrate attention and its relation with accuracy of dispatching for disabled from state of sitting