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The purpose of this study was to determine whether Physical activity could reduce violent behavior among undergraduate Sport Science students and may differ according to gender. The sample of study consisted of (80) male and female students of the expected graduating students in the Faculty at a rate of (%80) from the original community. a questionnaire consisted of (10) paragraphs was used. And after doing the suitable statistical treatments it was pin-pointed that practicing the sport activities has a big role in belittling the level of violence and at a very big degree amongst students of the Faculty of Physical Education and Sport Science in theHashemiteUniversity, and there are no differences between males and females. The researchers recommended with the necessity of preparing more studies about the phenomenon of violence for the different age stages.

The aim of this study is to identify the link between online sales systems, infrastructure, ease of use & information accuracy in improving Jordanian restaurants’ call centers' performance effectiveness (JRCCPE). In order to achieve the study's objectives, a questionnaire was conducted for measuring the link between online sales systems (OSS), infrastructure, ease of use & information accuracy in improving JRCCPE. The study sample was selected by distributing 220 questionnaires to all employees of Jordanian restaurants’ call centers (JRCC) from the set of employees working in an online sales system where 173 were retrieved. Aiming to answer the study questions and test hypotheses, the researcher extracted the means and standard deviations to apply the multiple regression equation. Accordingly, the study reached many results, showing a statistically significant effect for using the OSS, infrastructure, ease of use & information accuracy in improving JRCCPE. The study suggested that JRCC seeks adding various characteristics of editing, deleting, copying, and setting the time on the basis of text messaging through such networks as well as the need to conduct marketing studies in order to enable companies to achieve the customers' wishes in a method matching their expectations.

This study aims to identify the most athletic common injuries among a sample of 125 swimmers from the college of Physical Education and Sport Sciences at the Hashemite University. The results of the study indicate that the most common injuries among swimmers are the injuries of muscle tension in the areas of the leg and wrist. However, the neck and elbow areas are less vulnerable to injury among swimmers. The researchers recommend that swimmers should focus on the importance of good warming-up before swimming training in addition to taking into account the factors of safety inside and around the swimming pool.

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