Free Space Optical (FSO) technology offers highly directional, high bandwidth communication channels. This technology can provide fiber-like data rate over short distances. In order to improve security associated with data transmission in FSO networks, a secure communication method based on chaotic technique is presented. In this paper, we have turned our focus on a specific class of piece wise linear one-dimensional chaotic maps. Simulation results indicate that this approach has the advantage of possessing excellent correlation property. In this paper we examine the security vulnerabilities of single FSO links and propose a solution to this problem by implementing the chaotic signal generator “reconfigurable tent map”. As synchronizat

Background: The prediction of changes in the mandibular third molar position and eruption is an important clinical concern because third molar retention may be beneficial for orthodontic anchorage. The aims of this study were to assess the mandibular third molar position by using medical CT scan and lateral reconstructed radiograph and evaluate gender differences. Materials and Methods: The sample of present study consisted of 39 patients (18 males and 21 females) with age range 11-15 years who were attending at Al-Suwayra General Hospital/ the Computerized Tomography department. The distance from anterior edge of ramus to distal surface of permanent mandibular second molar and mesio-distal width of developing mandibular third molar were

Did not The Baghdadi community in the seventh century thirteenth century AD was the appearance of a great scientists who have an important role in the intellectual movement at Baghdad in that period, despite the political corruption. Sit Al-melook Baghdadi is one of notables seventh century thirteen century AD who lived its events and interacted with these event, In spite of the lack of information in the historical sources wrote about what wrote about her refers to the assumption of a reputability place among scholars of its age.

المقدمة

تمثل حركة الاصلاح في تاريخ النهضة العربية معلما بارزا من معالم الوعي الذي تصدره مجموعة من المفكرين والمصلحين العرب والمسلمين وكان ظهور العلماء الشيخ محمد عبده وجمال الدين الافغاني والعلامة عبد الرحمن الكواكبي عاملا مساعدا من العوامل التي ساعدت على دعم تطلعات العرب لمواجهة الاحتلال العثماني والبريطاني وكل اشكال الاستبداد والاضطهاد والتي عاشتها الشعوب العربية ..وياتي هذا البحث ا

تعد شخصية الوزير علي بن يقطين من الشخصيات التاريخية البارزة بالرغم من كونه
عمله كوزير ف

To work for your world as if you lived forever and work for your hereafter as if you were dying tomorrow, great wisdom and a high-level literary text and a philosophical text with clear features and complex structure.

This text attributed to Imam Ali is the answer to a question that humanity has  put in place since its existence and to this day, which is: what is the decent and happy life for a dead person?. Myths and religions with different references and philosophers have answered this question in different ways and vision, including Imam Ali, who answered dualism of reason and faith, through his view of the human being and life and clear features.

The current study examined the impact of using PowerPoint presentation on EFL student’s attendance, achievement and engagement. To achieve the aim of this study, three null hypotheses have been posed as follows: There is no statistically significant difference between the mean score of the experimental group attendance and that of the control one; there is no statistically significant difference between the mean score of the experimental group achievement and that of the control one, and there is no statistically significant difference between the mean score of the experimental group engagement and that of the control one. To verify a hypothesis, a sample of sixty students is chosen randomly from the third year, department of English,

Typographic patterns are one of the design elements in commercial advertising for their ability to deliver the message and information to the recipient smoothly and quickly, and it is indicated that there are many different techniques that can use typographic patterns in commercial advertisements, including spacing, spaces between letters, letter height, length, weight, and contrast and this Usage must be studied according to the type of font and how it can be used in advertising campaigns.
Based on the above, the research came to study (employing typographic patterns in commercial advertising design) in which the researcher identified his question for the purpose of reaching a solution to his research problem which is (Is it possible