نتایج جستجو برای: tornado
تعداد نتایج: 1560 فیلتر نتایج به سال:
The intensification of tornado depends mainly on the synoptic conditions of the troposphere. The main objective of this paper is to differentiate the prevalent atmosphere from thermodynamically point of view. Atmospheric stability parameters such as Lifted Index (LI), Total Total Index (TT), Deep Convective Index (DCI), Wind Index (WI), Severe Weather Threat Index (SWEAT), Convective Available ...
In this paper, different types of learning networks, such as artificial neural networks (ANNs), Bayesian neural networks (BNNs), support vector machines (SVMs) and Bayesian support vector machines (BSVMs) are applied for tornado forecasting. The last two approaches utilize kernel methods to address nonlinearity of the data in the input space. All methods are applied to forecast when tornadoes o...
The correlation between tornadic activity in several regions of the United States and the monthly mean sea surface temperature over four zones in the tropical Pacific Ocean is examined. Tornadic activity is gauged with two mostly independent measures: the number of tornadoes per month, and the number of tornadic days per month. Within the assumptions set forth for the analysis, it is found that...
Parallel shared-memory software must control concurrent access to shared resources. This is typically accomplished via locking designs that result in low concurrency or that are highly complex. This paper presents two-phase update, which is an alternative method of updating concurrent data structures, and demonstrates that it is both simple and highly scalable in restricted but commonly occurri...
An ingredients-based approach (e.g., Johns and Doswell 1992) is used in the operational prediction of tornado threat, regardless of whether the favorable environment results from midlatitude or tropical perturbations. Since the majority of tropical cyclone (TC) tornadoes are associated with supercells (Edwards et al. 2012a; hereafter E12), the forecaster typically can focus on the same ingredie...
BACKGROUND Mucormycosis is a fungal infection caused by environmentally acquired molds. We investigated a cluster of cases of cutaneous mucormycosis among persons injured during the May 22, 2011, tornado in Joplin, Missouri. METHODS We defined a case as a soft-tissue infection in a person injured during the tornado, with evidence of a mucormycete on culture or immunohistochemical testing plus...
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