Results 1 to 10 of about 15,934 (218)
npj Microgravity, 2022 AbstractIn the last 20 years, active matter has been a highly dynamic field of research, bridging fundamental aspects of non-equilibrium thermodynamics with applications to biology, robotics, and nano-medicine. Active matter systems are composed of units that can harvest and harness energy and information from their environment to generate complex ...
Volpe, G +6 more
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Earth, Planets and Space, 2023 In this study, the neutral wind observations from the Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI) instrument onboard Ionospheric CONnections (ICON) are used to investigate the longitudinal structure of zonal wind ...
Dan Li +6 more
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Space as an Invention of Active Agents [PDF]
Frontiers in Robotics and AI, 2016 The question of the nature of space around us has occupied thinkers since the dawn of humanity, with scientists and philosophers today implicitly assuming that space is something that exists objectively. Here, we show that this does not have to be the case: the notion of space could emerge when biological organisms seek an economic representation of ...
Alexander V. Terekhov +1 more
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Driving, Space, and Access to Activity [PDF]
The Journals of Gerontology Series B: Psychological Sciences and Social Sciences, 2015 The definition of health, according to the World Health Organization (WHO), is as follows: “Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.” (WHO, 1948). The interplay of physical and mental health, social interactions, and the environment of an individual contribute to their ...
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Solar activity and space weather
Journal of Physics: Conference Series, 2022 Abstract After providing an overview of solar activity as measured by the sunspot number (SSN) and space weather events during solar cycles (SCs) 21-24, we focus on the weak solar activity in SC 24. The weak solar activity reduces the number of energetic eruptions from the Sun and hence the number of space weather events.
Gopalswamy, Nat +4 more
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Astronomy & AstrophysicsContext. Switchbacks–transient, large-angle deflections of the interplanetary magnetic field–pervade the solar wind, yet their origin remains disputed. Current ex situ theories, notably coronal jets and interchange reconnection, are typically tested on ...
Dai Fanzhuo +5 more
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Access control for Active Spaces [PDF]
18th Annual Computer Security Applications Conference, 2002. Proceedings., 2003 Active Spaces are physical spaces augmented with heterogeneous computing and communication devices along with supporting software infrastructure. This integration facilitates collaboration between users, and promotes greater levels of interaction between users and devices.
Geetanjali Sampemane +2 more
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Activity triangles: a new approach to measure activity spaces
Journal of Geographical Systems, 2023 AbstractThere is an on-going challenge to describe, analyse and visualise the actual and potential extent of human spatial behaviour. The concept of an activity space has been used to examine how people interact with their environment and how the actual or potential spatial extent of individual spatial behaviour can be defined.
Katarzyna Sila-Nowicka +2 more
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Earth and Planetary PhysicsAtmospheric gravity waves (AGWs) observed by the All-Sky Airglow Imager (ASAI) require accurate identification for the study of atmospheric coupling mechanisms and space weather prediction.
YuBin He +8 more
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On the Variability of Human Activity Spaces [PDF]
, 2004 Arbeitsberichte Verkehrs- und Raumplanung ...
Schönfelder, Stefan, Axhausen, Kay W.
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