Wake structure and similar behavior of wake profiles downstream of a plunging airfoil

Vortical Patterns in the Wake of an Oscillating Airfoil

Study of mechanisms and factors that influence the formation of vortical wake of a heaving airfoil

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Unsteady flow past a plunging airfoil

This paper presents simulations of unsteady flow past a plunging airfoil using the highorder spectral difference (SD) method. Both third-order and fourth-order SD methods are used on unstructured quadrilateral grids. The vortex shedding pattern of an airfoil in an oscillating plunge motion becomes asymmetric at a sufficiently high frequency. The SD method is able to capture this effect and reve...

SLEEP-WAKE BEHAVIOR IN CHRONIC FATIGUE SYNDROME Sleep-Wake Behavior in Chronic Fatigue Syndrome

671 Sleep-Wake Behavior in CFS—Rahman et al about the mechanisms responsible for the experience of poor quality sleep in CFS. Human sleep is part of an oscillating sleep-wake pattern following a circadian rhythm.8 These cyclical rhythms are directed by the brain’s biological “clock” located in the suprachiasmatic nucleus and cause fluctuation of body temperature, hormone levels, and sleep over ...

a comparison of linguistic and pragmatic knowledge: a case of iranian learners of english

در این تحقیق دانش زبانشناسی و کاربردشناسی زبان آموزان ایرانی در سطح بالای متوسط مقایسه شد. 50 دانش آموز با سابقه آموزشی مشابه از شش آموزشگاه زبان مختلف در دو آزمون دانش زبانشناسی و آزمون دانش گفتار شناسی زبان انگلیسی شرکت کردند که سوالات هر دو تست توسط محقق تهیه شده بود. همچنین در این تحقیق کارایی کتابهای آموزشی زبان در فراهم آوردن درون داد کافی برای زبان آموزان ایرانی به عنوان هدف جانبی تحقیق ...