Results 41 to 50 of about 604,375 (292)

Overview of the First Pathloss Radio Map Prediction Challenge

IEEE Open Journal of Signal Processing
Pathloss quantifies the reduction in power density of a signal radiated from a transmitter. The attenuation is due to large-scale effects such as free-space propagation loss and interactions (e.g., penetration, reflection, and diffraction) of the signal ...
Cagkan Yapar, Fabian Jaensch, Ron Levie, Gitta Kutyniok, Giuseppe Caire   +4 more
doaj   +1 more source

An Unsupervised Learning Technique to Optimize Radio Maps for Indoor Localization

Sensors, 2019
A major burden of signal strength-based fingerprinting for indoor positioning is the generation and maintenance of a radio map, also known as a fingerprint database.
Jens Trogh, Wout Joseph, Luc Martens, David Plets   +3 more
doaj   +1 more source

Noise reduction for radio map crowdsourcing building in WLAN indoor localization system

EURASIP Journal on Advances in Signal Processing, 2021
Recent years have witnessed a growing interest in using WLAN fingerprint-based method for indoor localization system because of its cost-effectiveness and availability compared to other localization systems.
Liye Zhang, Zhuang Wang, Xiaoliang Meng, Chao Fang, Cong Liu   +4 more
doaj   +1 more source

Indoor Radio Map Construction via Ray Tracing With RGB-D Sensor-Based 3D Reconstruction: Concept and Experiments in WLAN Systems

IEEE Access, 2023
This paper proposes an RGB-D sensor-aided ray-tracing simulation framework for indoor radio map construction that models indoor information, such as walls and obstacles, as a set of cuboids.
Norisato Suga, Yoshihiro Maeda, Koya Sato   +2 more
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Towards accurate positioning: Directionality-enhanced fingerprinting radio map

ICT Express
The most essential element of location based service is accurate user localization. Considering the existing indoor infrastructure of the internet of things and WiFi access points, along with the widespread use of smartphones by individuals ...
Beomju Shin, Taehun Kim, Taikjin Lee
doaj   +1 more source

Radio map construction based on BERT for fingerprint-based indoor positioning system

EURASIP Journal on Wireless Communications and Networking, 2023
Due to the heavy workload of RSS collection, the instability of WLAN signal strength and the disappearance of signals caused by complex indoor environments, the construction of radio map for wireless local area network (WLAN) fingerprint-based indoor ...
Zhuang Wang, Qun Kong, Bingcai Wei, Liye Zhang, Aikui Tian   +4 more
doaj   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Faraday Rotation as a diagnostic of Galactic foreground contamination of CMB maps [PDF]

, 2012
The contribution from the residuals of the foreground can have a significant impact on the temperature maps of the Cosmic Microwave Background (CMB). Mostly, the focus has been on the galactic plane, when foreground cleaning has taken place.
A. M. Frejsel, Bennett, Bennett, Borka, Cayon, Condon, Cruz, Cruz, Cruz, Cruz, Das, Dineen, Dineen, Doroshkevich, Gold, Guzman, Górski, Hinshaw, Hinshaw, J. Kim, Jarosik, Kobulnicky, Komatsu, Large, Large, M. Hansen, McKee, Melioli, Milogradov-Turin, Naselsky, O. V. Verkhodanov, Oppermann, Oppermann, P. D. Naselsky, Pogosian, Quigley, Rudnick, Smith, Stil, Urosevic, Verkhodanov, Vielva, W. Zhao   +42 more
core   +1 more source

Function‐driven design of a surrogate interleukin‐2 receptor ligand

FEBS Letters, EarlyView.
Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang, Zelin Cheng, Teng Li, Fulian Wang, Liangminghui Zhang, Xiuxiu He, Lili Liu, Wei Wang, Aibin Liang, Guang Yang   +9 more
wiley   +1 more source