Results 41 to 50 of about 241,015 (255)

Adaptive particle swarm optimization [PDF]

, 2009
An adaptive particle swarm optimization (APSO) that features better search efficiency than classical particle swarm optimization (PSO) is presented. More importantly, it can perform a global search over the entire search space with faster convergence ...
Zhan, Z-H., Li, Y., Chung, H.S-H., Zhang, J.   +3 more
core   +1 more source

Simultaneous field‐aligned currents at Swarm and Cluster satellites [PDF]

Geophysical Research Letters, 2015
AbstractWe show for the first time, with direct, multispacecraft calculations of electric current density, and other methods, matched signatures of field‐aligned currents (FACs) sampled simultaneously near the ionosphere at low (~500 km altitude) orbit and in the magnetosphere at medium (~2.5 RE altitude) orbits using a particular Swarm and Cluster ...
M. W. Dunlop, J.‐Y. Yang, Y.‐Y. Yang, C. Xiong, H. Lühr, Y. V. Bogdanova, C. Shen, N. Olsen, Q.‐H. Zhang, J.‐B. Cao, H.‐S. Fu, W.‐L. Liu, C. M. Carr, P. Ritter, A. Masson, R. Haagmans   +15 more
openaire   +3 more sources

Combining polar-orbiting and low-inclination satellites — Joint analysis of data from MSS-1 and Swarm

Earth and Planetary Physics
This article investigates the combination of magnetic data from the MSS-1 and Swarm satellites for improved investigations of Earth’s magnetic field and Geospace. The study highlights the complementary nature of polar-orbiting (Swarm) and low-inclination
Nils Olsen
doaj   +1 more source

SLR, GRACE and Swarm Gravity Field Determination and Combination

Remote Sensing, 2019
Satellite gravimetry allows for determining large scale mass transport in the system Earth and to quantify ice mass change in polar regions. We provide, evaluate and compare a long time-series of monthly gravity field solutions derived either by ...
Ulrich Meyer, Krzysztof Sosnica, Daniel Arnold, Christoph Dahle, Daniela Thaller, Rolf Dach, Adrian Jäggi   +6 more
doaj   +1 more source

Optimal on-off cooperative manoeuvers for long-term satellite cluster flight [PDF]

, 2014
When a group of satellites is equipped with a particulary simple propul- sion system, e.g. cold-gas thrusters, constraints on the thrust level and total propellant mass renders cluster-keeping extremely challenging.
Gurfil, Pini, Mazal, Leonel, Mingotti, Giorgio   +2 more
core   +1 more source

In vitro and in silico modelling of ROS1‐positive non‐small cell lung cancer reveals fusion‐dependent tyrosine kinase inhibitor responses

Molecular Oncology, EarlyView.
Drug resistance limits treatment success in a subset of lung cancers driven by ROS1 gene alterations. Using patient‐derived cells and computer simulations, we studied three key mutations and how they affect five targeted drugs. The mutations reduced drug effectiveness in different ways by altering protein structure and behavior.
Farhan Ul Haq, Marc Terrones, Felicia Rodrigues Fortes, Anne Schepers, Alessia Denis, Christophe Deben, Ken Op de Beeck, Guy Van Camp, Geert Vandeweyer   +8 more
wiley   +1 more source

Insights into Conjugate Hemispheric Ionospheric Disturbances Associated with the Beirut Port Explosion on 4 August 2020 Using Multi Low-Earth-Orbit Satellites

Remote Sensing
In this study, we analysed remote sensing data collected during the Beirut port explosion on 4 August 2020 at 15.08 UT. For this purpose, we selected three Low-Earth-Orbit (LEO) satellite missions that passed near the Beirut port explosion site ...
Adel Fathy, Yuichi Otsuka, Essam Ghamry, Dedalo Marchetti, Rezy Pradipta, Ahmed I. Saad Farid, Mohamed Freeshah   +6 more
doaj   +1 more source

Communication protocol for a satellite-swarm interferometer

, 2023
Orbiting low frequency antennas for radio astronomy (OLFAR) that capture cosmic signals in the frequency range below 30MHz could provide valuable insights on our Universe. These wireless swarms of satellites form a connectivity graph that allows data exchange between most pairs of satellites.
Nagy, Oliver, Pandey, Manish, Exarchakos, Georgios, Bentum, Mark, van der Hofstad, Remco   +4 more
openaire   +4 more sources

Circulating microRNA signatures of cachexia and cancer in Canis familiaris as a comparative oncology model for human disease

Molecular Oncology, EarlyView.
Circulating microRNAs as biomarkers of cachexia and sex‐specific cancer in senior dogs. In 25 client‐owned dogs, four circulating miRNAs (miR‐15a, miR‐15b, miR‐16, miR‐140) were downregulated in cachexia, with miR‐16 the strongest individual biomarker (AUC = 0.899).
Soon‐Seok Park, Kyongman An, Gyeonghwa Kim, Soo‐Nyun Choi, Hong‐Ki Lee, Keun Hur, Kyu‐Shik Jeong   +6 more
wiley   +1 more source

Tandem Observations of Nighttime Mid‐Latitude Topside Ionospheric Perturbations

Space Weather, 2023
Nighttime medium‐scale traveling ionospheric disturbances (MSTIDs) have been generally observed by ground‐based instruments. However, they provide 2‐dimensional images over only a limited field of view and are not distributed globally.
Hosub Song, Jaeheung Park, Yaqi Jin, Yuichi Otsuka, Stephan Buchert, Jaejin Lee, Yu Yi   +6 more
doaj   +1 more source