Results 41 to 50 of about 3,008 (290)
Rethinking LEO constellations routing
International Journal of Satellite Communications and NetworkingSummary This study investigates the unsplittable multicommodity flow (UMCF) as a routing algorithm for LEO constellations. Usually, LEO routing schemes enable the Floyd–Warshall algorithm (shortest path) to minimize the end‐to‐end latency of the flows crossing the constellation. We propose to solve the UMCF problem associated with the
Paul Grislain +7 more
openaire +2 more sources
Dianxin kexue, 2023 With the growing maturity of millimeter wave technology and high-throughput satellite communication technology, as well as the urgent need for global broadband communication services, the construction of LEO giant communication constellation has ...
Yafei ZHAO +3 more
doaj +2 more sources
Optimal Progressive Pitch for OneWeb Constellation with Seamless Coverage
Sensors, 2022 Large-scale broadband low earth orbit (LEO) satellite systems have become a possibility due to decreased launch costs and rapidly evolving technology. Preventing huge LEO satellite constellations from interfering with the geostationary earth orbit (GSO ...
Cheng Zou +5 more
doaj +1 more source
On Dual Connectivity in 6G Leo Constellation
2024 IEEE International Mediterranean Conference on Communications and Networking (MeditCom)Dual connectivity (DC) has garnered significant attention in 5G evolution, allowing for enhancing throughput and reliability by leveraging the channel conditions of two paths. However, when the paths exhibit different delays, such as in terrestrial and non-terrestrial integrated networks with multi-orbit topologies or in networks characterized by ...
Machumilane A., Gotta A.
openaire +3 more sources
DESIGN OF A MINI LEO GNSS CONSTELLATION AND A CUSTOM GNSS SIGNAL SIMULATOR DEVELOPMENT
, 2023 This thesis is concerned with Low Earth Orbit (LEO) Global Navigation Satellite Systems (GNSS) constellations and signals, and how can they provide rapid Positioning, Navigation, and Timing (PNT) services for the emerging technologies.
Yaser, Mohamed Mohamed
core
Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis
FEBS Letters, EarlyView.Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee +7 more
wiley +1 more source
Modeling Environments for Exploration of Business Dynamics within P-LEO Constellation Markets [PDF]
, 2023 Due to recent investments in the space industry, companies have begun to further explore the business feasibility for space-based systems. This rapidly expanding space resources economy includes proliferated low Earth orbit (P-LEO) satellite ...
Qureshi, Rehman
core
Tumor B‐cell infiltration in platinum‐treated advanced muscle‐invasive urothelial carcinoma
Molecular Oncology, EarlyView.Bladder tumors with higher pretreatment memory B‐cell infiltration were linked to longer survival after cisplatin chemotherapy, but not carboplatin. These tumors also showed more organized immune structures (tertiary lymphoid structures) and a shared pro‐inflammatory B‐cell‐rich community, suggesting that memory B cells may help identify patients most ...
Konrad Stawiski +10 more
wiley +1 more source
Scalable Cloud-Based LEO Satellite Constellation Simulator
, 2015 Distributed applications deployed on LEO satellites and ground stations require substantial communication between different members in a constellation to overcome the earth coverage barriers imposed by GEOs.
Karim Sobh +3 more
core +1 more source
Molecular Oncology, EarlyView.Single‐cell multi‐omics reveals epigenetic heterogeneity across therapy‐adaptive tumor states, including quiescent/dormant, drug‐tolerant persister, and EMT‐like phenotypes. By linking regulatory features with state‐associated biomarkers, these approaches inform biomarker‐guided therapeutic strategies for evolving tumors.
Hee Jung Kim +3 more
wiley +1 more source