نتایج جستجو برای: changes inversely with frequency stockwell et al
تعداد نتایج: 9936834 فیلتر نتایج به سال:
To generate an all in focus image, the Shape-FromFocus (SFF) is used. The SFF key is finding the optimal focus depth at each pixel or area in an image within sequence of images. In this paper two new focusing measure operators are suggested to be used for SFF. The suggested operators are based on modification for the state of art tool for time-frequency analysis, the Stockwell Transform (ST). T...
Time-varying coherence is a powerful tool for revealing functional dynamics between different regions in the brain. In this paper, we address ways of estimating evolutionary spectrum and coherence using the general Cohen’s class distributions. We show that the intimate connection between the Cohen’s class-based spectra and the evolutionary spectra defined on the locally stationary time series c...
کنه های خانواده استیگمئیده استان های همدان و مرکزی طی سالهای 1390-1392 مورد مطالعه قرار گرفت.در این بررسی جمعأ 18 گونه متعلق به 7 جنس جمع آوری و شناسایی شدکه یک جنس اولین گزارش برای ایران بودکه با(?) مشخص شد. ??گونه برای اولین بار در دنیا شناسایی و توصیف گردیدکه با علامت(**) مشخص شده اند. لیست گونه ها در ذیل ذکر شده است. genus stigmaeus koch, 1836: stigmaeuscariae khanjani et al., 2012; stigma...
Introduction: Climatic components are the vital factors influencing the dust event. It was believed that changes in climate parameters play a crucial role in the occurrence of dust events. Former studies have shown that temperature, rainfall, and wind speed contribute to poor vegetation, providing requirements of dust events. Long-term dust data indicated that climate has a profound effect on d...
استافیلوکوکوس اورئوس نوعی کوکسی گرم مثبت است که یکی از عوامل تورم پستان در گاو می-باشد. اغلب مزمن بوده و با درمان آنتی بیوتیکی به آسانی درمان نمی شود لذا مشکلات جدی برای تولید شیر و صنعت لبنی ایجاد می نماید (sol, 1997). تورم پستان بیماری عفونی است که در بخش تولید با هزینه های بالای مالی درمان می شود. مقاومت دارویی در گونه های استافیلوکوکوس ارئوس مثل مقاومت به بتا لاکتام ها از جمله متی سیلین شنا...
according to cheng (1999), in recent esl/efl literature, asian (especially east asian) learners of english as a foreign/second language have been arguably reported as reticent and passive learners. the most common allegations are that these students are reluctant to participate in classroom discourse; they are unwilling to give responses; they do not ask questions; and they are passive and over...
A fast-growing theoretical literature on the political economy of reform has provided a sizable collection of models that have deepened our understanding concerning how distributional conflict manifests itself in the political process and can prevent efficiency-enhancing economic reform from taking place (see e.g., Allan Drazen [2000 Ch. 10, 13] for an insightful review). Unfortunately, systema...
in this paper, we have examined abrupt changes in volatility of tepix index in tehran stock exchange during august 23, 2010 to june 12, 2014. applying the iterated cumulative sum of squares (icss) algorithm proposed by inclan and tiao (1994) and the modified version of this algorithm consisting kappa 1 and kappa 2 test statistics developed by sansó et al. (2004), we have specified that the dete...
9 Country Comparisons of Human Stroke Research Since 2001 A Bibliometric Study Kjell Asplund, MD; Marie Eriksson, PhD; Olle Persson, PhD (Stroke. 2012;43:830-837.)
Comparative Performance of Multi-view Stereoscopic and Mammographic Display Modalities for Breast Lesion Detection by Lincoln Jon Webb Medical Physics Graduate Program Duke University Date:_______________________ Approved: ___________________________ Ehsan Samei, Supervisor ___________________________ Joseph Lo ___________________________ Sua Yoo An abstract of a thesis submitted in partial ful...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید