Results 301 to 310 of about 16,742,792 (332)
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The regulation of space activities and the space environment
2015Tl1e international legal regulation of outer space has e!Jolved itt response to the rapidly expanding activities involving the exploration and use of outer space, beginning at the height of the cold war era. Space law is now an important part of public intemational law, incorporating significant developments in both space tecltnofogy and international ...
Bohlmann, Ulrike M. +1 more
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Modeling User Activity Space from Location-Based Social Media: A Case Study of Weibo
, 2020Activity space studies are beneficial for discovering meaningful activity patterns and providing a deeper understanding of human behaviors. There is insufficient research, however, on how reliable location-based social media (LBSM) is as a new data ...
Xujiao Wang, Yihong Yuan
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Ca++ activity in the endolymphatic space
Archives of Oto-Rhino-Laryngology, 1986We measured Ca++ activity in the different parts of the endolymphatic space by using a double-barrelled electrode with calcium liquid ionic exchanger. In the region of the endolymphatic sac, Ca++ activity (4.7 X 10(-4) M) was much higher than in the cochlear duct (2.7 X 10(-5) M) and semicircular canal (2.6 X 10(-4) M). These findings suggest that Ca++
A. Meyer zum Gottesberge, O. Ninoyu
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Space activity and programs at SOFRADIR
SPIE Proceedings, 2016SOFRADIR is one of the leading companies involved in the development and manufacturing of infrared detectors for space applications. As a matter of fact, SOFRADIR is involved in many space programs from visible up to VLWIR spectral ranges. These programs concern operational missions for earth imagery, meteorology and also scientific missions for ...
N. Péré Laperne +8 more
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Social Network, Activity Space, Sentiment, and Evacuation: What Can Social Media Tell Us?
Annals of the American Association of Geographers, 2019Hurricanes are one of the most common natural hazards in the United States. To reduce fatalities and economic losses, coastal states and counties take protective actions, including sheltering in place and evacuation away from the coast.
Yuqin Jiang, Zhenlong Li, S. Cutter
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THE KEY FACTORS FOR A LEARNING SPACE - TIME, SPACE AND ACTIVITY
EDULEARN Proceedings, 2018Technology is a valuable tool in education both to increase access to knowledge and to promote learning. On the one hand, the ability of ICTs to centralize and organize large amounts of knowledge and, on the other hand, the students' familiarization with information networks and the internet, aims to interconnect students in networks and learning ...
Silva, Pedro Moreira da +1 more
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Acta Astronautica, 1985
Abstract Measures for the safety of space activities have to be elaborated by the scientific community. They should include principles for collision avoidance, possibly in the form of traffic separation schemes. A reduction of collision probabilities could be achieved by systematic removal of inactive satellites, by establishing disposal orbital ...
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Abstract Measures for the safety of space activities have to be elaborated by the scientific community. They should include principles for collision avoidance, possibly in the form of traffic separation schemes. A reduction of collision probabilities could be achieved by systematic removal of inactive satellites, by establishing disposal orbital ...
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Safe spaces and community activism
2018This chapter tells the story of community development in Rotherham and discusses some implications for policy and practice. The 1990s saw a decline in community development due to a lack of funding for posts, a lack of training being offered, changing funding priorities, and government policies.
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Active Optics for Space Telescopes
Optical Design and Fabrication 2019 (Freeform, OFT), 2019Active optics has been proposed for application to space telescopes since the mid 1960s since it can help to relax manufacturing tolerances while guaranteeing diffraction-limited image quality, correct for thermal gradients and any errors due to launch loads.
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Exploring Service Usage and Activity Space Evolution in a Free-Floating Carsharing Service
Transportation Research Record, 2019This paper proposes to empirically investigate the members’ behaviors over time in a free-floating carsharing system. With a continuously evolving service in terms of service area and fleet size, member usage intensity and activity space are explored ...
Grzegorz Wielinski +2 more
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