Results 31 to 40 of about 264,022 (279)

Smart learning environment: Teacher’s role in assessing classroom attention [PDF]

open access: yesResearch in Learning Technology, 2019
The main purpose of this article is to investigate the impact of teacher’s position on students’ performance in higher education. A new pedagogical approach based on collaborative learning is used due to the design of a smart learning environment (SLE ...
Rawia Bdiwi   +3 more
doaj   +1 more source

PluralisMAC: a generic multi-MAC framework for heterogeneous, multiservice wireless networks, applied to smart containers [PDF]

open access: yes, 2012
Developing energy-efficient MAC protocols for lightweight wireless systems has been a challenging task for decades because of the specific requirements of various applications and the varying environments in which wireless systems are deployed.
De Mil, Pieter   +4 more
core   +2 more sources

The Future of Intelligent Wavefront Shaping for Smart Radio Environments

open access: yes, 2021
As the electromagnetic spectrum becomes more congested and the environments in which we need to operate become more complicated, control over the environment itself becomes necessary to ensure the integrity of wireless communication channels. Wavefront shaping with programmable metasurfaces allows wave fields to be manipulated in both time and space ...
Frazier, Benjamin W., Anlage, Steven M.
openaire   +2 more sources

Trust Evaluation Model in IoT Environment: A Comprehensive Survey

open access: yesIEEE Access, 2023
The Internet of Things (IoT) is a rapidly evolving field that provides seamless connections to a physical object, making it part of a smart environment.
Somya Abdulkarim Alhandi   +2 more
doaj   +1 more source

A new stochastic spatio-temporal propagation model (SSTPM) for mobile communications with antenna arrays [PDF]

open access: yes, 2001
In order to evaluate the performance of third-generation mobile communication systems, radio channel models are required. The models should be capable of handling nonstationary scenarios with dynamic evolution of multipath. In this context and due to the
McGeehan, JP, Piechocki, RJ, Tsoulos, G
core   +2 more sources

Development of a Smart Cyber-Physical Manufacturing System in the Industry 4.0 Context

open access: yesApplied Sciences, 2019
The complexity and dynamic of the manufacturing environment are growing due to the changes of manufacturing demand from mass production to mass customization that require variable product types, small lot sizes, and a short lead-time to market. Currently,
Ngoc-Hien Tran   +3 more
doaj   +1 more source

Exploring the Design of Pay-Per-Use Objects in the Construction Domain [PDF]

open access: yes, 2008
Equipment used in the construction domain is often hired in order to reduce cost and maintenance overhead. The cost of hire is dependent on the time period involved and does not take into account the actual use equipment has received. This paper presents
Brown, J   +6 more
core   +1 more source

Opportunistic Mobility Support for Resource Constrained Sensor Devices in Smart Cities

open access: yesSensors, 2015
A multitude of wireless sensor devices and technologies are being developed and deployed in cities all over the world. Sensor applications in city environments may include highly mobile installations that span large areas which necessitates sensor ...
Daniel Granlund   +2 more
doaj   +1 more source

IoT-Enabled Smart Agriculture: Architecture, Applications, and Challenges

open access: yesApplied Sciences, 2022
The growth of the global population coupled with a decline in natural resources, farmland, and the increase in unpredictable environmental conditions leads to food security is becoming a major concern for all nations worldwide.
Vu Khanh Quy   +7 more
doaj   +1 more source

A Robust Zero-Calibration RF-based Localization System for Realistic Environments

open access: yes, 2016
Due to the noisy indoor radio propagation channel, Radio Frequency (RF)-based location determination systems usually require a tedious calibration phase to construct an RF fingerprint of the area of interest.
Elbakly, Rizanne, Youssef, Moustafa
core   +1 more source

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