A sad message
نویسندگان
چکیده
منابع مشابه
A Message from New Editor-in-Chief
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Every winter, especially when the days are short, I feel tired, depressed, and unproductive. Then the spring comes and I start feeling myself again. Is this just a normal seasonal cycle? I've heard about SAD, Seasonal Affective Disorder, but don't know much about it. Answer Dear Melancholy Baby, Somebody must've been feeling a bit clever when they christened the wintertime blues with the acrony...
متن کاملStochastic Differential Equations: A SAD Primer
1 The Wiener Process The stochastic process W t is a Wiener Process if its increments are normally distributed: W t − W s ∼ N (0, t − s) (1) and are independent if non-overlapping: E{(W t 1 − W s 1)(W t 2 − W s 2)} = 0 if (s 1 , t 1) ∩ (s 2 , t 2) = ∅ (2) In particular, we have E{W t − W s } = 0 (3) E{(W t − W s) 2 } = t − s (4) Furthermore, if we fix the initial value of the process to be zero...
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ژورنال
عنوان ژورنال: Journal of Rehabilitation Medicine
سال: 2012
ISSN: 1650-1977
DOI: 10.2340/16501977-1045