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Tajaldini M.,Universiti Sains Malaysia | Tajaldini M.,Islamic Azad University at Baft | Jafri M.Z.M.,Universiti Sains Malaysia

This paper proposes the modal propagation analysis (MPA) as a desirable way to study the all-optical switch based on small dimension MMI coupler in nonlinear regime. The finite difference method as a rigorous numerical method applies to solve the nonlinear modal equations and measure the modal propagation constant. The contrast ratio between ON and OFF outputs that is called switching performance gain (SPG) is used to optimize the switch via output width. The results show good efficiency in few micrometer of MMI length and sensitivity of SPG to output width as well as input intensity. © 2014 Elsevier GmbH. Source

Kor N.M.,Islamic Azad University at Baft | Ziaei N.,University of Jiroft
Asian Journal of Animal and Veterinary Advances

Reproductive management has an important role in animal production; therefore, the objective of this study was to determine the effect of different dosages of equine chronic gonadotropin (eCG) on reproductive performance of mature Raini goats during the breeding season. One hundred Raieni goats (42±2.5 kg) were randomly allocated to five groups to receive different dosages of eCG; (0 IU as control group; and other treated groups received 350, 450, 550 and 650 IU of eCG respectively). The interval to onset of estrus was detected by using five aproned bucks. Oestrus was induced by prostaglandin and occurred 24 to 48 h after the second injection. The results showed the estrus incidence rates were not significantly different between groups (p>0.05). The pregnancy rates were 90, 90, 95, 100 and 85% in treatments and control group, respectively, with the pregnancy rate in 550 and 650 IU groups being significantly higher than the other groups (p<0.05). Twinning rates were higher in treated goats (55, 58 and 65%) than in controls (36%, p<0.05). The results of the present study show that eCG treatments increase the twinning rate in Iranian Raieni goats. © 2012 Academic Journals Inc. Source

Noruzy A.,University of Tehran | Dalfard V.M.,Islamic Azad University at Kerman | Azhdari B.,Islamic Azad University at Baft | Nazari-Shirkouhi S.,University of Tehran | Rezazadeh A.,Islamic Azad University at Ahar
International Journal of Advanced Manufacturing Technology

The aim of this study is to determine relations between transformational leadership, organizational learning, knowledge management, organizational innovation, and organizational performance among Iranian manufacturing companies through structural equation modeling. Two hundred eighty senior, executive, administrative, and other-level managers are selected from among 106 companies having more than 50 employees. Data are analyzed using structural equation modeling. The following findings are found: transformational leadership directly influenced organizational learning and knowledge management. Organizational learning directly and positively influenced knowledge management of manufacturing firms. Transformational leadership positively influenced organizational innovation and organizational performance of manufacturing firms. Organizational learning and knowledge management directly influenced organizational innovation; whereas organizational learning and organizational innovation directly influenced organizational performance among manufacturing firms. Meanwhile, transformational leadership positively and indirectly influenced organizational innovation through organizational learning and knowledge management. Knowledge management and organizational learning effected organizational performance indirectly by organizational innovation. The fit indices shows that the proposed model have an appropriate fit (χ 2/df = 2.33, RMSEA = 0.069, NFI = 0.95, NNFI = 0.95, CFI = 97). If leaders of manufacturing firms undertake a transformational role and use organizational learning and knowledge management, this will facilitate organizational innovation and will consequently improve organizational performance to a great extent in manufacturing firms. © 2012 Springer-Verlag London Limited. Source

Barshan M.,Islamic Azad University at Baft | Shojaei M.,University of Isfahan
Communications in Computer and Information Science

The next-generation networks should provide users with highly intelligent and integrated services and applications. From the other hand, the increasing numbers of users and services have made the integrated management of the networks complicated. Still traditional management systems are not efficient enough and the heterogeneity and complexity of next-generation networks causes many challenges in network management. Therefore network operators and service providers have to provide users with high quality services. This paper reviews the challenges of management in next-generation networks and the proposed solutions. © 2013 Springer-Verlag. Source

Amirfakhraei A.,Islamic Azad University at Bandar Abbas | Alinaghizadeh A.,Islamic Azad University at Baft
Life Science Journal

Introduction: Mental health issues are common in Iran. This study examined the impact of praying and fasting on the mental health of students attending the Bandar Abbas Branch of Islamic Azad University in Iran in 2012. Methods: A total of 200 undergraduate students (85 girls and 115 boys) at the Bandar Abbas Branch of Islamic Azad University were selected as the sample using a multi-stage cluster random sampling process. The GHQ-28 mental health questionnaire was administered to them 2 weeks before Ramadan as a pre-test and 2 weeks after Ramadan as a post-test. Results: After analyzing data using a one-way ANOVA test and t-test, it was revealed that people who fasted the whole month of Ramadan or most of it, even they did so just for amusement, received more favorable scores on all the mental health subscales; meanwhile, reduced scores were evident after Ramadan among those who did not fast at all or, due to religious or medical reasons, could not fast. In addition, people who always or usually prayed also received higher scores on the mental health subscales. Conclusion: The results of this study indicate that fasting, even for amusement purposes, enhances individuals' mental health. In addition, people who always or usually pray have higher mental health scores than those who never or rarely pray. Source

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