نتایج جستجو برای: such as hurricanes
تعداد نتایج: 5963195 فیلتر نتایج به سال:
applications such as high definition viedeo reproduction, portable computers, wireless, and multimedia demand, and ever-increasing need for ligh-frequency high-resolution and low-power analog-to-digital converters. flash, two-step flash, and pipeline convertors are fast but consume large amount of power and require large area. to overcome these problems, successive approximation converter blo...
Hurricanes, rapidly increasing in complexity and strength a warmer world, are one of the worst natural disasters 21st century. Further studies integrating changing hurricane features thus crucial to aid prediction major hurricanes. With this mind, we present new framework based on automated decision tree analysis, which has capability identify most important cloud structural parameters from GOE...
issues of science and politics. Because of their significant and visceral impacts, discussion of extreme events is a frequent locus of such conflation. Linda Mearns, of the National Center for Atmospheric Research (NCAR), aptly characterizes this context: “There’s a push on climatologists to say something about extremes, because they are so important. But that can be very dangerous if we really...
347 MARCH 2008 AMERICAN METEOROLOGICAL SOCIETY | T ropical cyclones account for the majority of natural catastrophic losses in the developed world and, next to floods, are the leading cause of death and injury among natural disasters affecting developing countries (UNDP/BCPR 2004). It is thus of some interest to understand how their behavior is affected by climate change, whether natural or ant...
determination of uranium in natural water and complex solutions using ion exchange chromatography: a combined procedure using ion exchange chromatography and uv-vis spectrophotometry techniques has been developed to measure uranum in natural water and complex solutions. after conditicing , one hundred milli liters of sample solutions have been passed through an ion exchange column,pachked with ...
charles dickens was a voracious reader even in his childhood. his early reading of seventeenth- and eighteenth-century picaresque fiction greatly influenced his writing style. his first novel, the pickwick papers, is a tale of rogues and swindlers, adventures and quests, satire and comedy, and innocence and experience. oliver twist, dickens’ second novel, is a young boy’s progress through a cor...
due to lack of knowledge management system in the organization of technical and vocational university of iran (tvuni) and losing good employees because of retirement and substitution causes huge amount of costs to replace the similar expertise. there is no any suitable system in the tvuni to store, to document, and to distribute knowledge. based on the university’s features such as it has diffe...
in this thesis, a new optically active poly(amide-imide) (pai) was synthesized by the indirect polycondensation reaction of the l-phenylalanine based diacid chloride and 4,4?-diaminodiphenylether in the presence of triethylamine in n-methyl-2-pyrrolidone. the formation of pai was confirmed by ftir, 1h nmr and elemental analysis. in next step, the surface of titanium dioxide (tio2) nanoparticles...
The potential for a gliding UAV to sustain flight by dynamically soaring in a hurricane is investigated. Leveraging extensive storm observations, the wind profile of the hurricane eye is modeled as a continuous function that is zero at the center and increases as a power of the radius. We then derive the equations of motion for a UAV flying in this wind field, and prove analytically that if the...
abstract pragmatics is the study of communicative action in its sociocultural context. communicative action includes not only using speech acts (such as apologizing, complaining, complimenting, and requesting), but also engaging in different types of discourse and participating in speech events of varying length and complexity. the present study aimed to investigate the assessment of pragm...
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