Results 41 to 50 of about 251 (164)

Characterization of Pseudorange Errors in Hybrid LEO/MEO PNT System

open access: yesSensors
Integrating low Earth orbit (LEO) satellites into GNSS (Global Navigation Satellite System) MEO (Medium Earth Orbit) constellations enhances global positioning but faces technical bottlenecks. Through a 1D vehicular scenario simulation using MATLAB-based
Andrea Bianconi   +3 more
doaj   +1 more source

Concomitant Use of Oral Anticoagulants With Oral Dipeptidyl Peptidase‐4 Inhibitors and Serious Bleeding Events

open access: yesClinical Pharmacology &Therapeutics, Volume 117, Issue 4, Page 1012-1016, April 2025.
In a prior screening study, saxagliptin, a dipeptidyl peptidase‐4 inhibitor (DPP‐4i), was found to have an increased rate of serious bleeding when used concomitantly with several oral anticoagulants (OACs). We aimed to confirm or refute the associations between concomitant use of individual OACs and DPP‐4is and serious bleeding in a large US database ...
Thanh Phuong Pham Nguyen   +8 more
wiley   +1 more source

Design of Extended Weil Code Families via Goldbach-Based Prime Concatenation for LEO-PNT Systems

open access: yesApplied Sciences
Low Earth Orbit (LEO)-based positioning, navigation, and timing (PNT) systems have attracted growing interest owing to their strong transmission power and rapid Precise Point Positioning (PPP) convergence.
Jae Duk Yoo   +4 more
doaj   +1 more source

Overview of Hybrid Satellite–Terrestrial Networks (HSTNs): Key Technologies and Upcoming Challenges

open access: yesJournal of Computer Networks and Communications, Volume 2025, Issue 1, 2025.
Hybrid satellite–terrestrial networks (HSTNs) represent a crucial technology in the advancement of next‐generation communication systems, including 6 G. This paper presents an in‐depth review of cooperative and cognitive HSTNs, highlighting the key technologies, system models, and performance metrics that define their operation.
Akbar Asgharzadeh-Bonab   +4 more
wiley   +1 more source

Survey on positioning technology based on signal of opportunity from low earth orbit

open access: yesFrontiers in Physics
Positioning, Navigation, and Timing (PNT) services are essential for supporting various aspects of modern society. Fields such as communications, transportation, and military operations heavily rely on accurate and reliable PNT services, with this ...
Jiawei He   +9 more
doaj   +1 more source

Poster Sessions

open access: yes
HemaSphere, Volume 10, Issue S1, June 2026.
wiley   +2 more sources

The Impact and Sources of Radio Frequency Interference on GNSS Signals

open access: yesRadio Science, Volume 59, Issue 12, December 2024.
Abstract The utilization of the global navigation satellite systems (GNSS) services in both military and civilian applications as well as for scientific investigation has grown exponentially. However, the increasing reliance on GNSS applications has raised concerns about potential risks from intentional radio frequency interference (RFI) transmitters ...
Endawoke Yizengaw
wiley   +1 more source

Facets of security and safety problems and paradigms for smart aerial mobility and intelligent logistics

open access: yesIET Intelligent Transport Systems, Volume 18, Issue S1, Page 2827-2855, December 2024.
Sporadic deployment of unmanned aerial vehicles for priority‐based logistics demands inclusive safety‐driven and security smartness to address the myriads of associated risks. The incremental integration of explainable AI, blockchain, and zero trust cybersecurity paradigms is essential to achieving this, albeit with several requirements and ...
Simeon Okechukwu Ajakwe   +1 more
wiley   +1 more source

Effectiveness of French Phonological Components Analysis in individuals with chronic aphasia

open access: yesInternational Journal of Language &Communication Disorders, Volume 59, Issue 6, Page 2239-2264, November/December 2024.
Abstract Background Over 50% of individuals with aphasia face ongoing word‐finding issues. Studies have found phonologically oriented therapy helpful for English speakers, but this has not yet been studied in French. It is essential to assess the effectiveness of such a therapy in French, considering the distinct linguistic typologies between both ...
Michèle Masson‐Trottier   +4 more
wiley   +1 more source

Critical care unit bed availability and postoperative outcomes: a multinational cohort study

open access: yesAnaesthesia, Volume 79, Issue 11, Page 1165-1179, November 2024.
Summary Background Critical care beds are a limited resource, yet research indicates that recommendations for postoperative critical care admission based on patient‐level risk stratification are not followed. It is unclear how prioritisation decisions are made in real‐world settings and the effect of this prioritisation on outcomes.
Ruaraidh A. S. Campbell   +3008 more
wiley   +1 more source

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