Results 61 to 70 of about 10,144 (180)

Hummingbird flower visitation rates vary with species traits, floral abundance and phenology across bioregions

Oikos, Volume 2025, Issue 9, September 2025.
A myriad of factors influence species interactions, and determining their relative importance is a major challenge in community ecology. Here, we explored the multiple factors influencing hummingbird visitation rates to flowers by considering pollinator and floral traits alongside the broader ecological context (i.e.
Elisa Barreto, François Duchenne, Holger Beck, Carolina Bello, Rafaela Bobato, Emanuel Brenes, Daniela Bôlla, Nicole Büttner, Ana Paula Caron, José Alejandro Castro, Nelson Chaves‐Elizondo, María José Gavilanes, Esteban A. Guevara, Miriam Kaehler, Tiago Machado‐de‐Souza, Miguel Machnicki-Reis, Andrés S. Marcayata‐Fajardo, Cauã G. de Menezes, Andrea Nieto, Rafael de Oliveira, Ricardo A. C. de Oliveira, Alejandro Restrepo-González, Friederike Richter, Bryan G. Rojas, Luciele L. Romanowski, Ricardo Sánchez-Martín, Romulo C. da Silva, Wellinton Luiz de Souza, Danila S. Veluza, Ben Weinstein, Rafael Wüest, Thais B. Zanata, Krystal Zuniga, Tatiana Santander, Maria A. Maglianesi, Isabela G. Varassin, Catherine H. Graham   +36 more
wiley   +1 more source

DSRC versus 4G-LTE for Connected Vehicle Applications: A Study on Field Experiments of Vehicular Communication Performance

Journal of Advanced Transportation, 2017
Dedicated short-range communication (DSRC) and 4G-LTE are two widely used candidate schemes for Connected Vehicle (CV) applications. It is thus of great necessity to compare these two most viable communication standards and clarify which one can meet the
Zhigang Xu, Xiaochi Li, Xiangmo Zhao, Michael H. Zhang, Zhongren Wang   +4 more
doaj   +1 more source

A DSRC-Based Vehicular Positioning Enhancement Using a Distributed Multiple-Model Kalman Filter

IEEE Access, 2016
Some inherent shortcomings of the global positioning systems (GPSs), such as limited accuracy and availability, limit the positioning performance of a vehicular location system in urban harsh environments.
Yunpeng Wang, Xuting Duan, Daxin Tian, Min Chen, Xuejun Zhang   +4 more
doaj   +1 more source

Investigating and Modeling of Cooperative Vehicle-to-Vehicle Safety Stopping Distance

Future Internet, 2021
Dedicated Short-Range Communication (DSRC) or IEEE 802.11p/OCB (Out of the Context of a Base-station) is widely considered to be a primary technology for Vehicle-to-Vehicle (V2V) communication, and it is aimed toward increasing the safety of users on the
Steven Knowles Flanagan, Zuoyin Tang, Jianhua He, Irfan Yusoff   +3 more
doaj   +1 more source

Development and Performance Evaluation of a Connected Vehicle Application Development Platform (CVDeP) [PDF]

, 2019
Connected vehicle (CV) application developers need a development platform to build, test and debug real-world CV applications, such as safety, mobility, and environmental applications, in edge-centric cyber-physical systems.
Chowdhury, Mashrur, Deka, Lipika, Islam, Mhafuzul, Khan, Sakib Mahmud, Rahman, Mizanur   +4 more
core  

Increase of astrocyte apposition on GnRH neurons in early puberty onset induced by high fat diet

Journal of Neuroendocrinology, Volume 37, Issue 8, August 2025.
This study suggests that the HFD‐induced anticipation of puberty seems to be, at least partially, mediated by an increase in the interaction between astrocytes and GnRH neurons in both the MPOA and ARC/EM, which may increase the excitability of GnRH neurons.
Isabelle Rodrigues‐Santos, Raoni Conceição Dos‐Santos, Aline de Jesus, Rafael Appel Flores, Roberta Ribeiro Costa Rosales, Izabela Facco Caliman, Janete A. Anselmo‐Franci, José Antunes‐Rodrigues, Lucila Leico K. Elias   +8 more
wiley   +1 more source

Security of 5G-V2X: Technologies, Standardization and Research Directions

, 2019
Cellular-Vehicle to Everything (C-V2X) aims at resolving issues pertaining to the traditional usability of Vehicle to Infrastructure (V2I) and Vehicle to Vehicle (V2V) networking.
Guizani, Nadra, Sharma, Vishal, You, Ilsun   +2 more
core   +1 more source

An Unusual Winter Ozone Event in Colorado

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 14, 28 July 2025.
Abstract Surface ozone (O3) mixing ratios exceeding the National Ambient Air Quality Standard were measured at rural monitors along the Colorado Front Range on 17 April 2020 during the COVID‐19 lockdown. This unusual episode followed back‐to‐back upslope snowstorms and coincided with the presence of a deep stratospheric intrusion, but ground‐based ...
Andrew O. Langford, Kenneth C. Aikin, Raul J. Alvarez II, Sunil Baidar, W. Alan Brewer, Steven S. Brown, Matthew M. Coggon, Patrick D. Cullis, Jessica B. Gilman, Georgios I. Gkatzelis, Detlev Helmig, Bryan J. Johnson, K. Emma Knowland, Rajesh Kumar, Aaron D. Lamplugh, Brandi J. McCarty, Ann M. Middlebrook, Gabriele Pfister, Jeff Peischl, Irina Petropavlovskikh, Pamela S. Rickly, Michael A. Robinson, Andrew W. Rollins, Scott P. Sandberg, Christoph J. Senff, Carsten Warneke   +25 more
wiley   +1 more source

Collaborative Downloading in VANET using Network Coding

, 2012
Data downloading on the fly is the base of commercial data services in vehicular networks, such as office-onwheels and entertainment-on-wheels. Due to the sparse spacial distribution of roadside Base Stations (BS) along the road, downloading through ...
Firooz, Mohammad H., Roy, Sumit
core   +1 more source

The Energetics of Electron Transfer in Redox‐DNA Layers Mimics That of Redox Proteins

Chemistry – A European Journal, Volume 31, Issue 33, June 12, 2025.
The electron transfer in ferrocene‐labeled DNA (Fc‐DNA) layers mimics that of redox proteins, featuring a low reorganization energy (λ). The origin of the low λ in Fc‐DNA was unveiled by high‐scan‐rate cyclic voltammetry and molecular dynamics simulations, implying Fc‐DNA as a versatile tool to open new avenues in understanding the ET in biological ...
Zhiyong Zheng, Simon Grall, Soo Hyeon Kim, Arnaud Chovin, Nicolas Clement, Christophe Demaille   +5 more
wiley   +1 more source