Results 1 to 10 of about 3,656,515 (237)
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 ...
Giorgio Volpe +6 more
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On the Variability of Human Activity Spaces [PDF]
Transport Policy, 2004 Arbeitsberichte Verkehrs- und Raumplanung ...
Schönfelder, Stefan +1 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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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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Active experiments in space plasmas [PDF]
Eos, Transactions American Geophysical Union, 1980 Rather than observing purely natural phenomena, space physicists have in recent years planned and conducted ‘controlled’ experiments in the ionospheric and magnetospheric plasmas. In such experiments, the medium in the vicinity of the space vehicle is deliberately perturbed by the injection of a signal that has known characteristics; the signal may be ...
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A space for learning: An analysis of research on active learning spaces [PDF]
Heliyon, 2019 Active Learning Classrooms (ALCs) are learning spaces specially designed to optimize the practice of active learning and amplify its positive effects in learners from young children through university-level learners. As interest in and adoption of ALCs has increased rapidly over the last decade, the need for grounded research in their effects on ...
Robert Talbert, Anat Mor-Avi
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Space Activity Regulatory Matters of Space Law
Advanced Space Law, 2020 This article studies the issues of international space law and analyses the reasons for its occurrence. At the moment, space law actively develops, and space exploration has become increasingly popular and demanded. Nevertheless, this field’s legal regulations were drawn up in the mid-20th century and are now partly obsolete. Moreover, the set of space-
Andrey Ivanishchuk, Maria Markina
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Network Structure and Activity Spaces [PDF]
SSRN Electronic Journal, 2010 This research analyzes the in uence of network structure on household spatial patterns, as measured by activity spaces. The analysis uses street network and travel survey data from the Twin Cities and South Florida to compile measures of network structure. Statistical regression models test the relationship between network structure and travel.
Pavithra Parthasarathi +2 more
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A field guide for Activating Space
Education and Research Archive, 2020 This is a field guide for activating vacant urban spaces. It was prepared for the University of Alberta’s Kule Institute for Advanced Studies and Research Impact Canada's Knowledge Mobilization and Skills Fund.
Morrow, JA, Shields, Rob
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Population and species neighbor identity impact trait–trait relationships and plant performance
Population Ecology, EarlyView.We evaluated how populations and species identity influence plant performance and trait outcomes in mixtures, and assessed trait variation among populations of two forb species native to the western United States (Dieteria canescens and Heterotheca villosa) following three interaction treatments (single‐population monoculture, two‐population mixture ...
Alicia J. Foxx +2 more
wiley +1 more source