Results 91 to 100 of about 53,602 (307)
Mars base buildup scenarios [PDF]
, 1985 Two Mars surface based build-up scenarios are presented in order to help visualize the mission and to serve as a basis for trade studies. In the first scenario, direct manned landings on the Martian surface occur early in the missions and scientific ...
Blacic, J. D.
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Robust Mars Atmospheric Entry Integrated Navigation based on Parameter Sensitivity
, 2015 This paper presented a robust integrated navigation algorithm based on a special robust desensitized extended Kalman filtering with analytical gain (ADEKF) during the Mars atmospheric entry.
Lou, Taishan, Zhao, Liangyu
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American Journal of Botany, EarlyView.Abstract Premise Evolutionary theory predicts polymorphism should be rare; however, intraspecific variation in floral color is common and can be attributed to genetic drift, plasticity, or variable selection. Examining floral color polymorphism both within contact zones and across a species' range can reveal the mechanisms maintaining this variation ...
Emma Fetterly +6 more
wiley +1 more source
Meteorology of proposed Mars Exploration Rover landing sites [PDF]
, 2003 A. D. Toigo, M. I. Richardson
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MarsBots: Robotic Learning Module [PDF]
, 2006 This learning module offers hands-on, minds-on activities investigating the Martian environment and robotic technologies of space exploration. The learning module contains 16 national standards-based lessons designed to progress logically from learning ...
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Facilitators and barriers to neighborhood social integration
American Journal of Community Psychology, EarlyView.Abstract Social isolation has reached concerning rates, particularly in the wake of the COVID‐19 pandemic. Social integration is critical to combatting social isolation and loneliness by promoting a sense of community and belonging. Yet, most existing research centers on fostering close personal relationships within family and friend networks.
Joelle Fuchs +6 more
wiley +1 more source
Geology of the MER 2003 “Elysium” candidate landing site in southeastern Utopia Planitia, Mars [PDF]
, 2003 Kenneth L. Tanaka +4 more
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Mars landing mission: A structural approach [PDF]
A Mars landing mission in 2000 presents a structural challenge. Earlier studies have indicated that a Mars landing was then feasible using current structural techniques. Since these earlier studies, technology advances were made to enhance the capability.
Fuller, Stan
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Mars Orbiter Laser Altimeter: Experiment summary after the first year of global mapping of Mars [PDF]
, 2001 The Mars Orbiter Laser Altimeter (MOLA), an instrument on the Mars Global Surveyor spacecraft, has measured the topography, surface roughness, and 1.064-μm reflectivity of Mars and the heights of volatile and dust clouds.
Ivanov, Anton B. +2 more
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Australian Journal of Social Issues, EarlyView.ABSTRACT Embedded in the framework of intergenerational solidarity, this paper explores the interactions between older immigrants' participation in volunteering activities and intergenerational family relationships in the Chinese community in Sydney, Australia. The study investigates the effects of volunteering on the lives of older Chinese immigrants.
Bingqin Li +5 more
wiley +1 more source