منابع مشابه
اقلیم شناسی رخداد پوشش ابرهای پائین در ایران (2010-1981)
هدف از انجام این مطالعه، اقلیم شناسی ابرهای پائین در فصول مختلف سال و تطبیق آنها با الگوهای بلند مدت جوی به منظور کاربری در عملیات بارورسازی ابرها در ایران می باشد. داده های فراوانی رخداد ابرهای پائین شامل پوشن کومه‌ای (استراتوکومولوس)، پوشنی (استراتوس)، و کومه ای (کومولوس) از 44 ایستگاه همدیدی سازمان هواشناسی کشور در بازه زمانی 30 ساله در طول روز شامل ساعات 06، 09، 1...
متن کاملTrends in worker hearing loss by industry sector, 1981-2010.
BACKGROUND The purpose of this study was to estimate the incidence and prevalence of hearing loss for noise-exposed U.S. workers by industry sector and 5-year time period, covering 30 years. METHODS Audiograms for 1.8 million workers from 1981-2010 were examined. Incidence and prevalence were estimated by industry sector and time period. The adjusted risk of incident hearing loss within each ...
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When a surface is approximated by polygonal facets, often only the vertex positions are known, but associated vertex normals are required for smooth shading. Sometimes the model is just a polyhedron, and there is no single correct normal at a vertex. However, in other cases, there is an underlying smooth surface approximated by the facets, whose true normals are to be estimated from the facet g...
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Data engineering becomes increasingly important with the increasing popularity of service oriented architecture (SOA) and web services. Such data engineering requires a design methodology within an ontology framework. In this paper, the System Entity Structure (SES) serves as an abstract ontology framework for world state descriptionsontology framework for world state descriptions particularly ...
متن کاملModels of climatic normals for genecology and climate change studies in British Columbia
Maps of interpolated climate normals have recently become essential tools for many types of forestry research, such as studying genetic adaptation of trees to local environments, modeling species ranges shifts, or forest productivity under climate change scenarios. In this paper, we evaluate two widely used climate models for British Columbia with respect to their general precision and regional...
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ژورنال
عنوان ژورنال: Pesquisa Agropecuária Brasileira
سال: 2018
ISSN: 1678-3921,0100-204X
DOI: 10.1590/s0100-204x2018000200001