منابع مشابه
FAZLOLLAHTABAR, Hamed; HAJMOHAMMADI, Hamed, RELIABILITY ASSESSMENT OF USERS' VIRTUAL LEARNING QUEUE SYSTEM
In this paper we consider Virtual Learning Systems (VLSs) in which users utilize educational programs. Regarding the role of each system, some infrastructure as software and hardware exist. While several users exist in the VLS, a queue of users is configured. Fault would break down the system and cause learning defects being more serious in virtual learning environment. We consider the queue of...
متن کاملMohamed Abbas-08
The accuracy of measuring the crossing moment of a given signal to a specific reference voltage plays a crucial role in determining the bandwidth of the signal that could be converted by a level-crossing ADC. This timing accuracy is mainly determined by delay dispersion of the comparator and the accuracy of the time-to-digital converter (TDC) comprising the levelcrossing ADC. With the pico-seco...
متن کامل112-116- Abbas
COPD is a chronic multisystem disorder with various co morbidities. Smoking is a major risk factor. It’s etiology and multisystem effects may contribute to depression and anxiety. Interplay of various factors along with gender, socioeconomic, educational and marital status also do contribute to depression and anxiety in COPD. Unfortunately, Evaluation of anxiety and depression are often neglect...
متن کامل115-119-Waseem Abbas
Mild COPD is an asymptomatic disease but as oxidant antioxidant imbalance increases the severity of the disease also increases. The aim of the present study was to evaluate the oxidant antioxidant imbalance in mild and moderate COPD groups. The present study included 73 patients with COPD out of which 32 were of Mild impairment and 41 were suffering from Moderate COPD. The results indicated tha...
متن کاملEnvironmental Negotiations as Dynamic Games : Why so Selfish ? Raouf BOUCEKKINE
SUMMARY We study a trade-off between economic and environmental indicators using a two-stage optimal control setting where the player can switch to a cleaner technology, that is environmentally " efficient " , but economically less productive. We provide an analytical characterization of the solution paths for the case where the considered utility functions are increasing and strictly concave w...
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ژورنال
عنوان ژورنال: Review of Middle East Studies
سال: 2008
ISSN: 2151-3481,2329-3225
DOI: 10.1017/s0026318400052147