منابع مشابه
DTT coverage predictions – how they are made and tested
Planning of the UK terrestrial digital network was carried out as a Joint Planning Project by the BBC, NTL and ITC. The project was set up to plan the first 81 stations, providing six digital multiplexes. The planning of the network was a very complex operation with many constraints. At each station it was necessary to select the digital channels so as to give the best possible coverage, taking...
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The development of nanotechnology has led to the design of cutting-edge nanomaterials with increasing levels of complexity. Although "traditional" solid, uniform nanoparticles are still the most frequently reported structures, new generations of nanoparticles have been constantly emerging over the last several decades. The outcome of this nano-art extends beyond nanomaterials with alternative c...
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In recent work we compared transcriptions of German spontaneous dialogues of the VERBMOBIL corpus to ascertain differences between transcribers and quality. A better understanding of where and what kind of inconsistencies occur will help us to improve the working environment for transcribers, to reduce the effort on correction passes, and will finally result in better transcription quality. The...
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We studied the frequency of malfunction, variability in rate of nebulization, and effect of this variability on aerosol particle size of eight disposable jet nebulizer models produced by six manufacturers. Four of eight models showed visual signs of malfunction, including spraying of large, individually visible droplets, leaking of nebulizer solution, and air leaks that completely prevented neb...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1909
ISSN: 0036-8733
DOI: 10.1038/scientificamerican07101909-29supp