نتایج جستجو برای: area traverse
تعداد نتایج: 588600 فیلتر نتایج به سال:
The Dynamic Albedo of Neutron (DAN) instrument on board the Mars Science Laboratory Curiosity rover acquired a series of measurements as part of an observational campaign of the Kimberley area in Gale crater. These observations were planned to assess the variability of bulk hydrogen and neutron-absorbing elements, characterized as chlorine-equivalent concentration, in the geologic members of th...
Glen Torridon (GT) is a geomorphic feature of Aeolis Mons (informally Mt. Sharp) in Gale crater, Mars, variably covered by local regolith and wind-blown basaltic sands. The Mars Reconnaissance Orbiter's Compact Imaging Spectrometer for (CRISM) detected clay minerals GT, making GT target investigation the Science Laboratory (MSL) rover, Curiosity, which confirmed large abundance clays. MSL Dynam...
Rover localization accuracy is critical for Mars surface exploration missions. It is especially crucial for future longrange rover missions, such as MER (Mars Exploration Rover) 2003. The geometry of the rover image traverse network is one of the most important factors to achieving high accuracy. A systematic study of geometric image traverse design was carried out. Several traverses of side lo...
This paper explores the process of adaptation to new methods in a simple model where the growth rate of labour supply is exogenously given and constant. It shows that competition for a primary input in short supply changes the mechanism of adaptation and its consequences: If surplus labour exists, differential capacity accumulation effectuates adaptation and leads to a logistic replacement patt...
Mobile robots need to navigate in their environment in order to perform useful tasks. Doors appear in almost every office-like indoor environment and they have to be crossed often during the navigation process. We present in this paper a new approach that uses visual information to anticipate that a door has to be crossed. Combining then visual information with ultrasonic sensors, the robot app...
Using a newly developed vibrating electrode, we have explored the electric fields around lily pollen germinating in vitro. From these field measurements, we infer that each weeted pollen drives a steady current of a few hundred picoamperes through itself. Considered as a flow of positive ions, this current enters an ungerminated grain's prospective growth site and leaves it opposite end. Aft...
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