Results 11 to 20 of about 23,628 (107)

Flocking together : collective animal minds in contemporary fiction [PDF]

, 2020
The remarkable coordination displayed by animal groups such as an ant colony or a flock of birds in flight is not just a behavioral feat; it reflects a full-fledged form of collective cognition.
Caracciolo, Marco
core   +2 more sources

Self-propelled Worm-like Filaments: Spontaneous Spiral Formation, Structure, and Dynamics

, 2015
Worm-like filaments that are propelled homogeneously along their tangent vector are studied by Brownian dynamics simulations. Systems in two dimensions are investigated, corresponding to filaments adsorbed to interfaces or surfaces.
Elgeti, Jens, Gompper, Gerhard, Isele-Holder, Rolf E.   +2 more
core   +1 more source

The RMS Survey: Resolving kinematic distance ambiguities towards a sample of compact HII regions using HI absorption [PDF]

, 2011
We present high-resolution HI data obtained using the Australia Telescope Compact Array to resolve the near/far distance ambiguities towards a sample of compact HII regions from the Red MSX Source (RMS) survey.
Anderson, Araya, Araya, Bains, Benjamin, Binney, Blitz, Blum, Brand, Burton, Busfield, Caswell, Caswell, Churchwell, Clarke, Cohen, Dame, Downes, Dwek, Fish, Furness, Georgelin, Green, Green, H. C. Rogers, H. D. B. Cooper, Hammersley, Haynes, Hoare, J. C. Mottram, J. S. Urquhart, Jackson, Kolpak, Lockman, Lumsden, M. G. Hoare, M. Mottram, McClure-Griffiths, Moisés, Mottram, Mottram, Mottram, Mottram, Pandian, R. D. Oudmaijer, Reid, Roberts, S. L. Lumsden, Sewilo, Stark, Stil, T. J. T. Moore, Urquhart, Urquhart, Urquhart, Urquhart, Urquhart, Urquhart, Watson, Xu, Xu   +60 more
core   +1 more source

Upper-bounding bias errors in satellite navigation

, 2014
A satellite navigation system for a safety critical application is required to provide an integrity alert of any malfunction; the probability that a navigation positioning error exceeds a given alert limit without an integrity alert is required to be ...
Iwamoto, Takashi
core   +1 more source

Visual Localization Method for Fastener-Nut Disassembly and Assembly Robot Based on Improved Canny and HOG-SED

Applied Sciences
Visual positioning accuracy is crucial for ensuring the successful execution of nut disassembly and assembly tasks by a fastener-nut disassembly and assembly robot.
Xiangang Cao, Mengzhen Zuo, Guoyin Chen, Xudong Wu, Peng Wang, Yizhe Liu   +5 more
doaj   +1 more source

Evaluation of post‐tensioned reinforced and fiber reinforced concrete beams by using DOFS

Structural Concrete, EarlyView.
Abstract Prestressed concrete provides several advantages over traditional reinforced concrete; however, some markets remain skeptical about the use of post‐tensioned structures. A crucial factor in these structures is assessing and quantifying the final force introduced into the element.
Ignasi Fernandez, Daniel Ekström, Rasmus Rempling, Carlos G. Berrocal   +3 more
wiley   +1 more source

Dynamics of active filaments in porous media

, 2019
The motion of active polymers in a porous medium is shown to depend critically on flexibilty, activity and degree of polymerization. For given Peclet number, we observe a transition from localisation to diffusion as the stiffness of the chains is ...
Mokhtari, Zahra, Zippelius, Annette
core   +1 more source

Improvement of Mechanical Performance of Large Capacity Dry‐Type On‐Board Traction Transformer Under Short‐Circuit Electromagnetic Force

High Voltage, EarlyView.
ABSTRACT The application of dry‐type on‐board traction transformers (D‐OBTTs) aims to achieve lightweight electric multiple units (EMUs) and support the approach for carbon neutrality. However, the production of large capacity D‐OBTTs are limited due to the defects in insulation materials under the impact of short‐circuit electromagnetic force.
Woyang Li, Dongyang Wang, Yingyi Xia, Tiandong Chen, Lijun Zhou, Qian Lei, Yunyun Qian   +6 more
wiley   +1 more source

Observational evidence for self-interacting cold dark matter [PDF]

, 2000
Cosmological models with cold dark matter composed of weakly interacting particles predict overly dense cores in the centers of galaxies and clusters and an overly large number of halos within the Local Group compared to actual observations.
A. A. de Laix, A. A. Klypin, A. Dekel, A. Kusenko, B. Moore, B. Moore, B. Moore, B.-A. Gradwohl, C. W. Stubbs, David N. Spergel, E. D. Carlson, G. Dvali, G. Dvali, G. Kauffmann, G. Quinlan, G. Starkman, G. Toth, J. A. Tyson, J. Dalcanton, J. Dalcanton, J. Dalcanton, J. F. Navarro, J. Goodman, J. J. Mohr, J. V. Kepner, L. Blitz, M. E. Machacek, M. M. MacLow, M. Mateo, M. Weinberg, M. Zwann, N. Bahcall, P. D. Sackett, Paul J. Steinhardt, R. A. C. Croft, R. A. Flores, R. Bernabei, R. Schaeffer, V. P. Debattista, W. H. Press, W. J. G. De Blok   +40 more
core   +2 more sources

The “Pesticide Chip”: Chemical Legacies and Agrarian Futures in Costa Rica

Antipode, EarlyView.
Abstract For decades, agro‐industrial capital has adopted cascading chemical and biotechnical interventions, or fixes, to secure accumulation through the cultivation of monocrops. We develop a framework that centres on how monocrop‐induced susceptibility to pests and pathogens—and the patchwork of fixes to address these—produces uneven chemical ...
Soledad Castro‐Vargas, Marion Werner
wiley   +1 more source