Search

Computational Fluid Dynamics (CFD) of indoor environment as well as quality considerations are important element in the study of energy consumption, thermal comfort and indoor air quality in buildings. This paper investigate a comparison work between impinging jet, displacement, and mixing ventilation systems for an isothermal and nonisothermal ventilated room for Indoor Air Quality (IAQ) and thermal human comfort under Iraqi climate. For IJV system, draught discomfort is the issue of most concern since it supplies cooled air directly to the occupied zone. This study investigated a number of factors influencing draught discomfort and temperature stratification in an office environment. The considered factors, supply airflow rate and supply air temperature. RNG K-Ɛ turbulence model was used with the turbulent flow. The second aspect included numerical analyses by adopting ANSYS FLUENT15 code to generate simulation models. A square shaped air supply device was used with [0.1 times room height (h)] outlet terminal height from the foot level end. The IJV system proved more efficient than displacement and mixing ventilation systems. The Air Distribution Performance Index (ADPI) obtained for an isothermal and non-isothermal ventilated room adopting IJV system gave best values (0.80, 0.83) respectively compared with the other two ventilation systems.

Modern psychological studies are directed towards psychological health of teachers in general and the teachers of college of sport education specially. The phenomenon Psychological Burnout among workers in the teaching professional has received prominent attention especially in the last few years and a large number of studies showed that teachers are most subjected to psychological burnout because they are subjected pressures which negatively affects their performance and their attitudes towards their students and to their work in general and leading that some quit their jobs in purse of other professions. Stemming stated above, the importance of this study emerged for the teachers of sport education colleges and comparing them while the study problem is confined to find the differences among sport education teachers in three departments (Sport Science Dept. team Games Dept. and gamy Sports Dept.) Whom are subjected to a number of pressures that affect their daily activity thus their profession and leading to psychological burnout. The aim of the study: The study aimed to expound the differences in psychological burnout among teachers in the college of sport education in the departments of (Sport Science Dept. Group Games Dept. and Single Sports Dept). The theoretical context of the study considered psychological burnout, the theories explaining it, the reasons behind it and the most prominent symptoms accompanying it in addition to a review of a number of studies that dealt with this subject. The method used in study was the descriptive method appropriate to the nature of the study. The study sample consisted of (21) male and female teacher deliberately selected from the population of the study from the three departments representing (83) male and female teachers. The psychological burnout scale was adopted for the study while the statistical tools used were (Arithmetic Mean, Standard Deviation, and Percentage, Variance Analysis and, L.S.D test). The most important results were as following: 1-The level of psychological burnout is high in general among the teachers in the three departments. 2-Significant differences have been shown to exist between Sport science department and group games department in favor for the later. 3-No Significant differences exists between Sport Science Dept and Single Sports Dept from one side and Group Games Dept. and Single Sports Dept. from the other as it didn’t reach significant levels. 4-The closeness in level of psychological burnout measured based on percentage. The researcher recommended the following: 1- Establishing support for teachers in Sport education by providing the equipment and tools necessary for their work. 2- Providing immunity for all college and university teachers in addition to teachers in Sport education from persisting daily threats stemming from current security conditions. 3-Emphasize on methods of deterring students when crossing the lines with their teachers. 4-Emphasizing on providing equal opportunities for teachers to decrease the psychological burnout among them stemming from feelings of aggrievance 5- Emphasizing on strengthening social relations among teacher and higher entities in administration and to be open to their problems and attempt to solve them as much as possible.

The study aims to expound some biomechanic variables of the rotation and movement on pony device for amateurs and comparing these moves among some of the most best players in the Fotowa sports Club in Ninevah and players of Irbill sport club, Through the observations of the players in these sport clubs especially on the pony device during teaching the rotation and movement performance and previous experience with the players of both sport clubs, the researchers decided that the subject sample consisted of the best four players in the Fotowa and Irbill sport clubs and they were deliberately selected and homogenized according to body mass, age, and training experience. The researcher adopted the descriptive method which appropriate to the nature of the study and the data were collected through observation using a video capture device.The main experiment was carried out in Ninaveh and Irbill using the special statistic tools and research methodology for correlated samples the results were presented according the calculated statistical marks. The researchers deducted after studying the results that significant differences in the favor of the AL-Fotowa club appeared in the height of the shoulder joint on the base of support and displacement of hip when supported on the right hand or the left hand in addition significant differences in favor for the Fotowa club in sholder angle and inclination of shoulder blade and hip angle. The performance of the players of AL- Fotowa club is better than that for Erbill Club because of the accessory devices aiding in developing the technical performance of this club including the split support device in this club which is made in accordance to international standards (area larger than the one used in Irbil club). Therefore, researcher recommended the use of aiding devices in training and that they are build and manufactured in accordance with international standards which help players to be ideal in their prefor mance.

ABSTRACT This research was performed to compare the efficiency of three methods for bacteriological analysis of drinking water, Most Probable Number (MPN), Membrane Filtration (MF) and Total Plate Count (TPC) in detection of microbial contamination of drinking water in Nineveh province for two months, result showed differences in the percentage contamination of drinking water samples taken from one part depending on the method type, and the higher average in failure percentage appeared by using (MF) method (%67.77) followed by (MPN) method (%58.88) and then (TPC) method (%50), also (MF) results changed (%43.2) of accepted results in (MPN) method into failure results, and country sides was the most higher in average of failure percentage (%73.3).