نتایج جستجو برای: مدل mars
تعداد نتایج: 133736 فیلتر نتایج به سال:
Australia is an ideal testing ground in preparation for the robotic and human exploration of Mars. Numerous sites with landforms or processes analogous to those on Mars are present and the deserts of central Australia provide a range of locations for free-ranging Mars analogue mission simulations. The latest developments in testing technologies and strategies for exploration in Australian Mars ...
We report the detection of intense emission from magnesium and iron in Mars’ atmosphere caused by a meteor shower following Comet Siding Spring’s close encounter with Mars. The observations weremade with the Imaging Ultraviolet Spectrograph, a remote sensing instrument on the Mars Atmosphere and Volatile EvolutioN spacecraft orbiting Mars. Ionized magnesium caused the brightest emission from th...
We describe our initial experiences producing controlled digital elevation models (DEMs) of Mars with horizontal resolutions of ≤10 m and vertical precisions of ≤2 m. Such models are of intense interest at all phases of Mars exploration and scientific investigation, from the selection of safe landing sites to the quantitative analysis of the morphologic record of surface processes. Topomapping ...
Decades of robotic exploration have confirmed that in the distant past, Mars was warmer and wetter and its surface was habitable. However, none of the spacecraft missions to Mars have included among their scientific objectives the exploration of Special Regions, those places on the planet that could be inhabited by extant martian life or where terrestrial microorganisms might replicate. A major...
در این تحقیق به مقایسه تحلیلی و عددی آبشار جریان برگشتی مدل R با آبشارهای Q QI سیستمهای چندجزیی پایدار پرداخته میشود. راستا برای اولین بار کدهای جهت طراحی منظور کد نرمافزار متلب نوشته شدهاند. نتایج نشان میدهد که دو جزء 1k 2k از خوراک Nc جزء، تعداد معدودی قابل تعریف است همگی حالات خاصی میباشد. همچنین یافتهها مجموع مقدار برش جزیی همیشه برابر یک است. طریق داده میشود صورتی میانگین ...
PURPOSE To compare the reliability, validity, and responsiveness of the Mars Letter Contrast Sensitivity (CS) Test to the Pelli-Robson CS Chart. METHODS One eye of 47 normal control subjects, 27 patients with open-angle glaucoma, and 17 with age-related macular degeneration (AMD) was tested twice with the Mars test and twice with the Pelli-Robson test, in random order on separate days. In add...
INTRODUCTION Cytokines are believed to play an important role in acute-on-chronic liver failure (ACLF). Extracorporeal liver support systems may exert beneficial effects in ACLF via removal of cytokines. At present, two systems are commercially available, the Molecular Adsorbent Recirculating System (MARS) and Fractionated Plasma Separation, Adsorption and Dialysis (Prometheus). The aim of this...
Introduction: Much of the Martian surface is obscured by dust. The bright and ubiquitous nature of this dust makes remote sensing spectral analysis of the underlying surface materials difficult or impossible. As a result, the composition and mineralogy of the substrate materials in large areas of Mars have yet to be characterized in detail. Still, even in the dustiest regions of Mars, small hol...
This report presents the results of a limited evaluation of the block cipher MARS. No important weaknesses or flaws were found on MARS. The round function of MARS looks simple but is relatively complex to analyse because of the different natures of the involved components. MARS is an iterated cipher which runs in 32 rounds, but the rounds are not of the same type, which is somewhat unusual. The...
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