a phase-locked loop (pll) based frequency synthesizer is an important circuit that is used in many applications, especially in communication systems such as ethernet receivers, disk drive read/write channels, digital mobile receivers, high-speed memory interfaces, system clock recovery and wireless communication system. other than requiring good signal purity such as low phase noise and low spu...

abstract while task-based instruction is considered as the most effective way to learn a language in the related literature, it is oversimplified on various grounds. different variables may affect how students are engaged with not only the language but also with the task itself. the present study was conducted to investigate language and task related engagement on the basis of the task typolog...

پرسش از زمان از جمله سوالاتی است که همواره ذهن بشر را به خود مشغول کرده از این رو رساله حاضر تلاش می کند با طرح پرسش از زمان در تفکر حکیم شهیر آلمانی افق جدیدی را پیش روی مخاطب قرار دهد، زمان از بنیادی ترین مسائلی است که همواره فکر و ذهن انسان را به خود مشغول کرده است. پیشینه مسئله زمان بسیار بیشتر از اندیشه مابعدالطبیعی است و در هیچ یک از دوره های تاریخی حیات انسان از ذهن و فکر او بیرون نرفته ...

the central purpose of this study was to conduct a case study about the role of self monitoring in teacher’s use of motivational strategies. furthermore it focused on how these strategies affected students’ motivational behavior. although many studies have been done to investigate teachers’ motivational strategies use (cheng & d?rnyei, 2007; d?rnyei & csizer, 1998; green, 2001, guilloteaux & d?...

Hakim Dashtaki has viewed human being as spacio-temporal being and future etrnal but not past eternal. He has proved the view by relying on the verse: Hath there come Upon man (ever) any period of time in which he was a thing unremembered? Ibn Arabi, however, views human being as both past eternal and future eternal. The article has intended to study some commenators` opinions of the verse and ...

چکیده مجموعه حاضر با هدف معرفی و ارائه ی توصیفی برای اصطلاحات رایج در دانش معنی شناسی تهیه شده است. برای دستیابی به چنین هدفی سعی بر آن بود تا صرفاً به واژگان نقش مند در شاخه ی عمده ی معنی شناسی زبانی توجه شود. در حوزه معنی شناسی زبانی، به اصطلاحات در شاخه ای از این دانش، یعنی معنی شناسی نظری (theoretical semantics) و آنچه معنی شناسی کاربردی (applied semantics) نامیده ایم، اشاره شود. و هدف از ت...