Results 151 to 160 of about 11,866 (295)

Security Performance Analysis of LEO Satellite Constellation Networks under DDoS Attack. [PDF]

Sensors (Basel), 2022
Zhang Y, Wang Y, Hu Y, Lin Z, Zhai Y, Wang L, Zhao Q, Wen K, Kang L.   +8 more
europepmc   +1 more source

Investigating the suitability of Analytical and Semi-analytical Satellite theories for Space Object Catalogue maintenance in Geosynchronous regime

, 2013
Currently, the number of space debris particles is about 33,500, out of which approximately 1100 are in geosynchronous orbits, which are tracked and whose orbital data are provided from US Space surveillance network, with instances of colliding and ...
Setty, Srinivas, Fiedler, Hauke, Montenbruck, Oliver, Cefola, Paul   +3 more
core  

The Development of high fidelity linearized J2 models for satellite formation flying control [PDF]

, 2005
The inclusion of the linearized J2 effect in the Hill equations of relative motion gives greater insight into satellite formation flying dynamics, and the opportunity to investigate alternative feedback control strategies for the station keeping task.
Roberts, Peter C. E., Roberts, Jennifer A.   +1 more
core  

Rod Origami (RodOri) Spring Metamaterials for Tunable Vibration Control via Tailored Structural Instabilities

Advanced Science, EarlyView.
Rod Origami (RodOri) springs harness snap‐through instabilities of pre‐stressed curved rods with geometrically programmable buckling behavior. Integrating RodOri springs with distinct geometries yields multistable metamaterials that undergo stepwise reconfiguration via sequential snapping, achieving wide‐range tunability of stiffness and resonance ...
Jeseung Lee, Sophie Leanza, Ruike Renee Zhao   +2 more
wiley   +1 more source

A Cooperative Routing Scheme Using Inter-Satellite Links to Assist Data Downloading for LEO Satellite Networks. [PDF]

Sensors (Basel), 2022
Yang Z, Liu H, Jin J, Tian F.
europepmc   +1 more source

Unveiling a Hidden Conversion Pathway in CoSe2 Anodes via Rationally Designed CNT‐Interwoven Hollow Carbon Microclusters for High‐Performance Potassium‐Ion Batteries

Advanced Science, EarlyView.
A rational architectural design of hierarchical, CNT‐interwoven hollow carbon microclusters unlocks and stabilizes a unique monoclinic Co3Se4‐mediated conversion–insertion pathway for potassium storage. This structural confinement effectively guides the reaction kinetics and accommodates severe mechanical strain.
Ho Rim Kim, Seohyeon Jang, Hong Geun Oh, Jaewoo Lee, Jihun Yeom, Daiha Shin, Jiung Cho, Inho Nam, Seung‐Keun Park   +8 more
wiley   +1 more source

An Asynchronous Collision-Tolerant ACRDA Scheme Based on Satellite-Selection Collaboration-Beamforming for LEO Satellite IoT Networks. [PDF]

Sensors (Basel), 2023
Hong T, Liu R, Liu Z, Ding X, Zhang G.
europepmc   +1 more source

5G NTN LEO Based Demonstrator Using OpenAirInterface5G

69753GPP Release-17 formally recognizes Non-Terrestrial Network (NTN) components as an integral part of future telecommunication networks. The integration of 5G with NTN has gained significant traction due to the joint effort from academia, industry, and
Heyn, Thomas, Schlichter, Thomas, Kumar, Sumit, Hammouda, Marwan, Marques, Paulo A.C., Conti, Matteo, Yilmaz, Turker, Chatzinotas, Symeon, Pereira, Luís, Kapovits, Ádám, Querol, Jorge, Magueta, Roberto, Cioni, Stefano, Sheemar, Chandan Kumar   +13 more
core   +1 more source

Beyond Potency: Emerging Determinants and Optimization Strategies Enhancing Therapeutic Efficacy of Adult Stem Cells

Advanced Science, EarlyView.
Adult stem cell therapy requires more than high in vitro potency. This review proposes a systems framework in which cell‐intrinsic programs, instructive microenvironmental cues, and pre‐/post‐delivery engineering are co‐designed under standardized translational rules.
Soo‐Rim Kim, Yun Jae Jung, Hwa‐Yong Lee   +2 more
wiley   +1 more source

The Potential of LEO Satellite-Based Opportunistic Navigation for High Dynamic Applications. [PDF]

Sensors (Basel), 2022
Jardak N, Jault Q.
europepmc   +1 more source