Results 71 to 80 of about 25,634 (239)

Preprocessing Procedure for Propagation Measurements on MEO Satellite Links

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper presents a software tool designed for preprocessing data from an experimental campaign aimed at characterizing the tropospheric propagation channel using Medium Earth Orbit (MEO) satellites. The collected data provide critical insights into the channel in scenarios involving continuous variations in azimuth and elevation, along with
Marlene Brás, Susana Mota, Armando Rocha   +2 more
wiley   +1 more source

A facile chemical strategy to synthesize precise AAV-protein conjugates for targeted gene delivery

Molecular Therapy: Oncology
Current adeno-associated virus (AAV) gene therapies are limited by a lack of tissue-specificity, leading to toxic off-target impacts and increased therapeutic costs. More target-specific AAV vectors can offer safer and less expensive therapies.
Quan Pham, Jake Glicksman, Boyang Han, Seyed Sadegh Shahraeini, Delilah Jewel, Conor Loynd, Soumya Jyoti Singha Roy, Abhishek Chatterjee   +7 more
doaj   +1 more source

Insights From the Alphasat Aldo Paraboni Experiment at Tito Scalo and Spino d'Adda: Characterizing Scintillation and Rain Attenuation at Ka‐ and Q‐Band Frequencies

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT We present experimental results on the relationship between rain attenuation and simultaneous scintillation during rain events, based on beacon signal measurements at 19.7 (Ka‐band) and 39.4 GHz (Q‐band) from the geosynchronous Alphasat satellite (25° E), received at two Italian ground stations, Spino d'Adda (42.1° slant path) and Tito Scalo ...
Miles Turner, Alef Comisso, Carlo Riva, Lorenzo Luini, Giuseppe Codispoti, Giorgia Parca   +5 more
wiley   +1 more source

Integrating Image Segmentation and Deep Learning to Improve Radio Frequency Propagation Models

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper proposes a multi‐sensor approach to improve radio frequency (RF) propagation models, which play a key role in the rapidly expanding field of connected vehicle technology. Focusing on the 1‐ to 20‐GHz frequency range, which is critical for both satellite‐to‐vehicle and base station‐to‐vehicle communications, our study introduces a ...
Jonathan Israel, Xavier Boulanger, Vegard Arneson   +2 more
wiley   +1 more source

Development and performance testing of a positioning system for tank floor in-service inspection robots

You-qi chuyun
ObjectivePrecise positioning capability is essential for enabling tank floor in-service inspection robots to avoid obstacles, quantify defects, and achieve autonomous navigation.
Yewei KANG, Changfang WU, Zhenghong GUO
doaj   +1 more source

Applying measurement standards to evolution education assessment instruments

Evolution: Education and Outreach, 2019
Over the past 25 years a number of instruments have been published that attempt to measure understanding and acceptance of evolution. Science educators have been administering these instruments and reporting results, however, it is not clear these ...
Louise S. Mead, Cory Kohn, Alexa Warwick, Kathryn Schwartz   +3 more
doaj   +1 more source

Opportunistic Beacon Networks [PDF]

, 2016
Modern society is surrounded by an ample spectrum of personal mobile devices with short-range wireless communication support. This ubiquity creates an immense potential of new concepts for people-centric ad hoc networks that can be applied to every personal and social dimension of life.
openaire   +3 more sources

Electrocatalytically Amplified Immunosensing Enabled by Titanium Oxynitride‐Supported Ru Nanodots on Graphene Oxide Hybrid Architecture

Small, EarlyView.
A synergistic effect among the electrocatalytic Ru/TiON‐GO nanocomposite, biorecognition elements, and the [Fe(CN)6]3−/4− redox probe for highly sensitive and selective impedimetric detection of PSA protein in human serum was demonstrated. The immunosensor exhibited a limit of detection of only 0.06 ng mL−1 PSA protein, underscoring the importance and ...
Mitja Koderman, Milutin Smiljanić, Filip Cernatič, Marjan Bele, Francisco Ruiz‐Zepeda, Nejc Hodnik, Mitja Kolar, Samo B. Hočevar, Nikola Tasić   +8 more
wiley   +1 more source

Reconfiguration of Localized Ruthenium Surface via Incorporating Single Platinum Atoms for Favorable Hydrogen Oxidation Catalysis

Small, EarlyView.
The introduction of a Pt single atom changes the Ru surface structure and results in the reconstruction of the active sites for hydrogen and CO oxidation catalysis. With a Pt loading of only 1 wt.%, RuPtSA exhibited superior HOR activity and resistance to impurities compared to commercial Pt catalysts in both acid and alkaline electrolytes.
Daeil Choi, Dong Wook Lee, Hochang Song, Seung‐hoon Kim, Dohoon Kim, Jongkyung Ryu, Jue‐Hyuk Jang, Sungyong Cho, Sungchul Lee, Segeun Jang, Hyung Chul Ham, Sung Jong Yoo   +11 more
wiley   +1 more source

Tailoring Model‐Based Systems Engineering for Sub‐100 g PlanarSats: A Power‐First View Stack

Systems Engineering, EarlyView.
ABSTRACT This paper addresses how to apply model‐based systems engineering (MBSE) to ultrasmall planar satellites under severe power and resource constraints. PlanarSats are sub‐100‐gram spacecraft built as single printed‐circuit boards where the same surface must host both electronics and solar cells, so power generation, geometry, and component ...
Mehmet Şevket Uludaǧ, Alim Rüstem Aslan   +1 more
wiley   +1 more source