Results 61 to 70 of about 166,346,941 (209)

Sir and Guys in 20th‐ and 21st‐Century American English

World Englishes, EarlyView.
ABSTRACT This paper examines the diachronic development of formal and informal address and reference terms in American English as an effect of democratization using the COHA corpus (1900–2020). In focus are two address/reference terms with especially drastic frequency trends in the timespan investigated: the honorific sir, which declines sharply from ...
Hanna Bruns, Svenja Kranich
wiley   +1 more source

BASAT: BLE AOA-Based Spatio-Temporal Acoustic TOA Estimator

IEEE Access
In severely reverberant indoor environments, acoustic Time-of-Arrival (TOA) localization on commercial smartphones is prone to multipath-induced bias and unreliable ranging.
Can Xue, Huixin Zhuge, Zhi Wang
doaj   +1 more source

A novel time of arrival estimation algorithm using an energy detector receiver in MMW systems

EURASIP Journal on Advances in Signal Processing, 2017
This paper presents a new time of arrival (TOA) estimation technique using an improved energy detection (ED) receiver based on the empirical mode decomposition (EMD) in an impulse radio (IR) 60 GHz millimeter wave (MMW) system.
Xiaolin Liang, Hao Zhang, Tingting Lyu, Han Xiao, T. Aaron Gulliver   +4 more
doaj   +1 more source

A Mechanism for Analyzing the Energy Consumption and Environmental Impact of LoRa Sensors Over Time

International Journal of Communication Systems, Volume 39, Issue 15, October 2026.
An SPN‐based mechanism, validated against NS‐3 with MAPE below 0.3%, reveals how packet generation rate and spreading factor shape LoRa sensor lifetime, energy consumption, and operational CO2$$ {}_2 $$ emissions, supporting sustainable planning of large‐scale IoT deployments. ABSTRACT Long Range (LoRa) sensors are widely adopted in Internet of Things (
Vandirleya Barbosa, Melissa Alves, Iago Almeida, Iure Fé, Jean Araujo, Francisco Airton Silva   +5 more
wiley   +1 more source

A Closed-Form Localization Algorithm and GDOP Analysis for Multiple TDOAs and Single TOA Based Hybrid Positioning

Applied Sciences, 2019
Cellular communication systems support mobile phones positioning function for Enhanced-911 (E-911) location requirements, but the positioning accuracy is poor. The fifth-generation (5G) cellular communication system can use indoor distribution systems to
Zhongliang Deng, Hanhua Wang, Xinyu Zheng, Xiao Fu, Lu Yin, Shihao Tang, Fuxing Yang   +6 more
doaj   +1 more source

When two diseases collide: Endometriosis as a risk factor for severe pelvic inflammatory disease

Acta Obstetricia et Gynecologica Scandinavica, Volume 105, Issue 10, Page 2060-2067, October 2026.
Endometriosis is associated with a more severe clinical course of pelvic inflammatory disease in hospitalized patients, including higher rates of antibiotic treatment failure, longer hospital stay, and increased need for surgical intervention. Abstract Introduction Our objective was to compare the severity of pelvic inflammatory disease (PID) in ...
Marta Camacho, Mariona Rius, Maria Angeles Martínez‐Zamora, Meritxell Gracia, Lara Quintas‐Marquès, Cristian De Guirior, Francisco Carmona, Cristina Ros   +7 more
wiley   +1 more source

Multi-Sensor Passive Localization Using Second Difference of Coherent Time Delays With Incomplete Measurements

IEEE Access, 2019
The passive localization using multiple sensors is considered for emitter transmitting pulse signals with unknown start transmission time and period.
Shangyu Zhang, Zhen Huang, Xuefeng Feng, Jiazhi He, Lei Shi   +4 more
doaj   +1 more source

Lakes Modify the Magnitude and Timing of the Northern Hemisphere Terrestrial Cryosphere Radiative Effect

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Vast areas of Earth's Northern Hemisphere are covered in lakes that form seasonal ice cover, yet their influence on the terrestrial Cryosphere Radiative Effect (CrREt) has not previously been quantified. Here we use 22 years of satellite data to constrain the contribution of lakes to CrREt.
Sarah W. Cooley, Elizabeth E. Webb, Eric S. Levenson, Jonathan C. Ryan   +3 more
wiley   +1 more source

More Stabilizing Radiative Feedbacks in CO2 Removal Scenarios

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Recent studies show that global mean surface temperature exhibits a transient hysteresis during CO2 ${\mathrm{C}\mathrm{O}}_{2}$ removal, where temperatures remain elevated after CO2 ${\mathrm{C}\mathrm{O}}_{2}$ concentrations return to pre‐industrial levels.
Ivan Mitevski, Gabriel A. Vecchi
wiley   +1 more source

Location Algorithms and Errors in Time-of-Arrival Systems [PDF]

, 2001
This report describes least squares solution methods and linearized estimates of solution errors caused by data errors. These methods are applied to event locating systems which use time-of-arrival (TOA) data.
Aaronson, Eugene A.
core   +1 more source