Results 71 to 80 of about 7,634,909 (286)

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

open access: yesAdvanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang   +9 more
wiley   +1 more source

Poetics of Transcendence: Stylistic Reduction as a Tool for Representation of Sacred Meanings

open access: yesRespectus Philologicus, 2016
The main direction of the work is connected to the representation of abstract (transcendent) objects in music and literature. The article analyses “Cantus in Memoriam Benjamin Britten” by Arvo Pärt and some poems of Czesław Miłosz.
Elena Brazgovskaya
doaj   +1 more source

100 Glimpses : Lyle Kirk

open access: yes, 2023
100 Glimpses is a series of short documentaries produced by the Sight Center of Northwest Ohio. The series explores the organization's history. The Sight Center was founded in 1923 as the Toledo Society for the Blind.
Sight Center of Northwest Ohio (Toledo, Ohio)
core  

A Full Physical Strategy for Electrical Contacts on Laser‐Induced Graphene (LIG) Electrodes

open access: yesAdvanced Electronic Materials, EarlyView.
A fully dry fabrication strategy combining PVD and dual‐laser processing enables direct integration of laser‐induced graphene with metallic current collectors. Ultralow Au‐LIG contact resistance is achieved without binders, adhesives, or chemical treatments, while preserving electrochemical performance.
Davide Arcoraci   +9 more
wiley   +1 more source

Does Contract Farming Reduce Pesticide Use? Panel Data Evidence From Smallholder Farmers in China

open access: yesAgribusiness, EarlyView.
ABSTRACT The inappropriate and excessive use of pesticides poses a major threat to human and ecosystem health in the agri‐food sector. While existing studies have examined the potential of contract farming to address this issue, most have focused on large‐scale farms and relied on small or transactional datasets, often leaving the role of crop‐specific
Zhihui Liang, Shan Jin, Matthew Gorton
wiley   +1 more source

A Research on the Simultaneous Localization Method in the Process of Autonomous Underwater Vehicle Homing with Unknown Varying Measurement Error

open access: yesApplied Sciences, 2019
We propose an acoustic-based framework for automatically homing an Autonomous Underwater Vehicle (AUV) to the fixed docking station (F-DS) and mobile docking station (M-DS).
Lingyan Dong   +4 more
doaj   +1 more source

In Situ Contact Angle Measurement for Autonomous Spin Coating in Self‐Driving Labs

open access: yesAdvanced Intelligent Discovery, EarlyView.
A vision‐based add‐on transforms commercial spin coaters into autonomous modules of Self‐Driving Labs. Combining a width‐scaled U‐Net with classical geometric analysis, the system simultaneously measures contact angles and estimates substrate pose using a single camera.
Sven Fischer, Micha Hiegle, Holger Röhm
wiley   +1 more source

Available Degrees of Spatial Multiplexing of a Uniform Linear Array With Multiple Polarizations: A Holographic Perspective

open access: yesIEEE Open Journal of Signal Processing
The capabilities of multi-antenna technology have recently been significantly enhanced by the proliferation of extra large array architectures. The high dimensionality of these systems implies that communications take place in the near-field regime ...
Xavier Mestre   +2 more
doaj   +1 more source

Collaborative Visual Localization for Modular Self‐Reconfigurable Robots

open access: yesAdvanced Intelligent Systems, EarlyView.
Relative localization in modular self‐reconfigurable robots is challenged by hardware limitations, constrained fields of view, and sensor faults. This paper, based on the SnailBot platform, presents a vision‐based collaborative localization method that combines ArUco markers with learning‐based algorithms to enable robust pose estimation from ...
Guanqi Liang   +4 more
wiley   +1 more source

Measuring and Evaluating TV White Spaces in Samsun, Turkey

open access: yesJournal of New Results in Science, 2016
The aim of this study is to determine the available Television White Space (TVWS) spectrums in Samsun with the aid of TV spectrum measurements at 73 different locations.
Cetin Kurnaz, Zafer Emre Albayrak
doaj  

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