Results 71 to 80 of about 7,056 (211)
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 +4 more
doaj +1 more source
Journal of Anatomy, EarlyView.New World vultures are the only avian clade proposed to lack a syrinx and have been described as non‐vocal. Using dissection, diceCT, and histology, we demonstrate that cathartid vultures have novel syringeal features that form a syrinx and vocal characterization reveals that they produce more complex vocalizations than previously reported.
Bradley A. Ibarra +3 more
wiley +1 more source
Research on Time of Arrival Estimation Algorithm Based on ESPRIT
International Journal of Computer Science & Information Technology (IJCSIT)The ESPRIT (Estimation of Signal Parameters via Rotational Invariance Techniques) algorithm is a high-resolution method used for estimating the Direction of Arrival (DOA) of signals.
Jiawei Liu
semanticscholar +1 more source
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 +6 more
doaj +1 more source
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 +4 more
doaj +1 more source
Measurement and modeling of diffuse ultraviolet radiation: A review
Photochemistry and Photobiology, EarlyView.Solar UV radiation consists of direct and diffuse UV components. The diffuse component contributes to the exposure received by humans and to the risk of skin cancer and sun‐related eye disorders. This review aims to determine future research directions for the measurement and modeling of diffuse solar UV radiation.
Alfio V. Parisi +7 more
wiley +1 more source
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
IEEE AccessThis study analyzes the performance of positioning techniques based on configuration changes of 5G New Radio (NR) signals. In 5G networks, a terminal’s position is determined from the Time of Arrival (TOA) of Positioning Reference Signals (PRS ...
Hyejin Shin +3 more
doaj +1 more source
New Zealand Journal of Marine and Freshwater Research, Volume 60, Issue 3, September 2026.Seagrass flowering underpins seed‐based restoration and is governed by the interaction of multiple abiotic and biotic drivers operating across a range of temporal and spatial scales. In New Zealand/Aotearoa, flowering was historically considered rare, but emerging evidence indicates it is more widespread than previously recognised, creating new ...
Dana E. Clark +13 more
wiley +1 more source
Disaster Schooling Experiences and Emergent Crises: Lessons From Puerto Rico
Anthropology &Education Quarterly, Volume 57, Issue 3, September 2026.ABSTRACT This paper examines the disaster schooling experiences of Puerto Rican educators, families, and students across multiple crises following Hurricane Maria. Drawing on 11 months of ethnographic research, we analyze how schooling unfolded across disasters and how long‐standing vulnerabilities and structural inequalities shaped responses. Findings
Melissa Colón +2 more
wiley +1 more source