This paper proposes and studies an ecotoxicant system with Lotka-Volterra functional response for predation including prey protective region. The equilibrium points and the stability of this model have been investigated analytically both locally and globally. Finally, numerical simulations and graphical representations have been utilized to support our analytical findings

إن أهم مايميز النص الأدبي شعراً كان أم نثراً نسيجه اللغوي الجمالي الذي يعبر عن التجارب الحياتية والمشاعر الوجدانية وترجمة ما يجول في الخاطر من أفكار واحاسيس الى صور انفعالية تؤثر في المتلقي. . يحاول هذا البحث الخوض في شعرية الخطاب الروائي في رواية ( النوم في حقل الكرز ) للكاتب العراقي ( أزهر جرجيز ) وهي واحدة من أهم الروايات الحائزة للجائز العالمية ( البوكر ) ودراسة الصورة الشعرية بانماطها المتنوعة التشبيهية وال

The variety of ideas and freedom of expression among the authors who are looking for everything new that serves the goals of musical and aesthetic expression, which calls for the use of traditional musical instruments with the great composition of musical instruments known as the orchestra represents a great challenge in several aspects. The incompetence of some of these instruments or limited capabilities or its costly method of performance sometimes forbids its use permanently in this great composition. It was necessary to have some problems facing the composer and the player on the one hand and the recipient on the other hand, who must be looking for perfection. Among those instruments that are used regularly in the works of the orche

Hypercholesterolemia is a predominant risk factor for atherosclerosis and cardiovascular disease (CVD). The World Health Organization (WHO), ) recommended reducing the intake of cholesterol and saturated fats. On the other hand, limited evidence is available on the benefits of vegetables in the diet to reduce these risk factors, so this research was conducted to compare the hypolipidemic effect between the extracts of two different types of Iraqi peppers, the fruit of the genus Capsicum traditionally known as red pepper extract (RPE), and Piper nigrum as black pepper extract (BPE), respectively, in different parameters and histology of the liver of the experimental animals. The red pepper was extracted by ethyl acetate, while the black pepp

تتسارع التحولات السياسية في العصر الحديث، وتتزايد التحديات التي تواجه المجتمعات، حيث يظهر التطرف كظاهرة تهدد أمن الدول واستقرارها، وتعد الإصلاحات السياسية خطوة حيوية نحو تحقيق تنمية مستدامة وتحقيق التوازن في المجتمعات. أذ يهدف هذا البحث إلى استكشاف وتحليل دور الأصلاح السياسي كآلية فعالة في مكافحة ظاهرة التطرف. وطالما أن الدول في المنطقة العربية تعاني من التسلط والأستبداد وغياب دور المؤسسات السياسية الفعل

Abstract
        This research aims to identify the relationship and the impact of the behavior of organizational citizenship in the performance of employees, as practiced behaviors organizational citizenship substantial role in achieving the objectives of both the organization and its staff at the same time, so it affects a large extent on the characteristics and performance of individuals employees and thus influence the success of the organization as a whole, problem of the research has indicated that there is a clear failure in the study of the impact of the behavior of organizational citizenship in the performance of employees, was chosen

This work is concerned with designing two types of controllers, a PID and a Fuzzy PID, to be used
for flying and stabilizing a quadcopter. The designed controllers have been tuned, tested, and
compared using two performance indices which are the Integral Square Error (ISE) and the Integral
Absolute Error (IAE), and also some response characteristics like the rise time, overshoot, settling
time, and the steady state error. To try and test the controllers, a quadcopter mathematical model has
been developed. The model concentrated on the rotational dynamics of the quadcopter, i.e. the roll,
pitch, and yaw variables. The work has been simulated with “MATLAB”. To make testing the
simulated model and the controllers m

The current research aims to investigate the effect of a specimen of Daniel in the acquisition of concepts for the Arabic language curricula material to the students of the third phase of the Faculty of Basic Education Department of Arabic Language. The sample consists of (93) applications and a student of (47) students in the Division (A), which represents the experimental group which studied the use of a specimen of Daniel, and (46) students in the Division (B), which represents the control group, which studied the traditional way. The subject of unified two groups, which subjects the Arabic language curricula which includes six chapters.
The duration of the experiment is a full semester. The researchers also prepared a tool for mea