The aim of the research is to prepare practical volleyball lessons by using the four pillars strategy for middle school students, and to identify the effect of the four pillars strategy in performing the transmission and volleyball skills in the second intermediate students, to assume that the two researchers assume that there are no statistically significant differences between the results of my skill performance tests Sending and preparing tribal and remote volleyball for the experimental and controlled groups, and there are no statistically significant differences between the results of the performance of the transmission and preparation skills of the volleyball between the two experimental and control groups, and the research community available in the second -grade middle -grade students persistently in the morning study in the high school for boys within the secondary school within Forms of the General Directorate for Baghdad Education/ Rusafa for the academic year (2023/2024), The total number of (180) students, who are inherently distributed to the six study people, the application sample of the number of (40) random students in the two divisions (A) and (C) represented (22,222 %) of the origin society, and after preparing the performance tests The skill and preparation of practical lessons in this strategy was applied after tribal tests by experimenting with a period of (8) weeks at a rate of (1) one lesson per week and for each skill (4) consecutive weeks, and then conducting dimensional tests and processing the results automatically with a system (SPSS) so that the conclusions and recommendations are to apply The strategy of the four pillars in practical physical education is suitable for middle school students, and helps in improving the performance of the transmission and preparation skills of their volleyball, and they outperform the improvement level of the performance of these two skills for students who study without them, and it is necessary to increase interest in modernizing teaching strategies in active learning and employ their applications In the lesson of physical education by adopting individual differences to suit the age and level of middle school students, It is necessary to include the applications of the strategy of the four pillars in the preparation courses and training in the General Directorates of Training and to introduce teachers to how to employ them in practical lessons of volleyball because of their positive returns to the skill factor for second-grade intermediate students.
order to increase the level of security, as this system encrypts the secret image before sending it through the internet to the recipient (by the Blowfish method). As The Blowfish method is known for its efficient security; nevertheless, the encrypting time is long. In this research we try to apply the smoothing filter on the secret image which decreases its size and consequently the encrypting and decrypting time are decreased. The secret image is hidden after encrypting it into another image called the cover image, by the use of one of these two methods" Two-LSB" or" Hiding most bits in blue pixels". Eventually we compare the results of the two methods to determine which one is better to be used according to the PSNR measurs
The study of cohomology groups is one of the most intensive and exciting researches that arises from algebraic topology. Particularly, the dimension of cohomology groups is a highly useful invariant which plays a rigorous role in the geometric classification of associative algebras. This work focuses on the applications of low dimensional cohomology groups. In this regards, the cohomology groups of degree zero and degree one of nilpotent associative algebras in dimension four are described in matrix form.
In this paper, an eco-epidemiological prey-predator system when the predator is subjected to the weak Allee effect, and harvesting was proposed and studied. The set of ordinary differential equations that simulate the system’s dynamic is constructed. The impact of fear and Allee’s effect on the system's dynamic behavior is one of our main objectives. The properties of the solution of the system were studied. All possible equilibrium points were determined, and their local, as well as global stabilities, were investigated. The possibility of the occurrence of local bifurcation was studied. Numerical simulation was used to further evaluate the global dynamics and understood the effects of varying parameters on the asymptotic behavior of t
... Show More
The idea of this research is the basis of the role exercised by the dimensions of performance management (Performance Planning- performance evaluation- improve the performance and development- feedback - Review and Performance Monitor) In order to achieve the success Organizational Is through the (strategic vision- the operational activity- development of the company- selection of personnel- the company's culture- Leadership and Management- Personal Development - Assessment and Review).And The research aims to identify the extent of the responsibility of performance management in achieving success Organizational through main hypotheses branched out by the sub-hypotheses to knowing out the&nbs
... Show MoreMO Khudhair, 2020
In this research, we studied the effect of concentration carriers on the efficiency of the N749-TiO2 heterogeneous solar cell based on quantum electron transfer theory using a donor-acceptor scenario. The photoelectric properties of the N749-TiO2 interfaces in dye sensitized solar cells DSSCs are calculated using the J-V curves. For the (CH3)3COH solvent, the N749-TiO2 heterogeneous solar cell shows that the concentration carrier together with the strength coupling are the main factors affecting the current density, fill factor and efficiency. The current density and current increase as the concentration increases and the