Results 81 to 90 of about 1,652 (216)

Secure Mobile-Phone Based Visible Light Communications With Different Noise-Ratio Light-Panel

open access: yesIEEE Photonics Journal, 2018
We propose and demonstrate a visible light communication (VLC) system using a light-panel and a mobile-phone camera. We also propose the rolling-shutter-effect (RSE) pattern synchronization and demodulation algorithms. By using our developed mobile-phone
Chi-Wai Chow   +7 more
doaj   +1 more source

Energy Optimization Models for the Locomotive Assignment Problem

open access: yesNetworks, EarlyView.
ABSTRACT Reducing energy consumption is a key objective in transportation. Using detailed infrastructure data, this study introduces the Green Locomotive Assignment Problem (GLAP) to minimize energy consumption in railway operations by efficiently assigning locomotives to pre‐scheduled trains.
Gislind Baumgartner   +3 more
wiley   +1 more source

Ecological significance of fruit displays in Myrtaceae: relationship between fruit colour, maturation stage, attractiveness and seed germination

open access: yesOikos, EarlyView.
Fruit colour has long fascinated scientists and is widely considered an evolutionary adaptation to attract both avian and mammalian frugivores. While fleshy fruits play a key role in plant–animal interactions by promoting seed dispersal, the functional significance of colour variation, particularly multicoloured displays during ripening, remains poorly
Hercília Freitas da Cunha   +3 more
wiley   +1 more source

Color-Shift Keying for Optical Camera Communication Using a Rolling Shutter Mode

open access: yesIEEE Photonics Journal, 2019
An optical camera communication (OCC) is a special type of a visible light communication that uses a complementary metal-oxide semiconductor as a receiver. However, it is difficult to apply a high-order modulation scheme to such communications because of
Hao-Wei Chen   +6 more
doaj   +1 more source

FLSea: Underwater Visual–Inertial and Stereovision Forward‐Looking Data Sets

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT Visibility underwater is challenging and degrades as the distance between the subject and the camera increases. That is why forward‐looking underwater computer vision tasks are difficult. We have collected underwater forward‐looking stereovision and visual–inertial image sets using two underwater imaging platforms, a stereo camera rig, and an ...
Yelena Randall   +2 more
wiley   +1 more source

Application of Circular Economy Principles to Power Generation: Extending the Life of A Hydropower Plant by Pumped Hydro Energy Storage

open access: yesSustainable Development, EarlyView.
ABSTRACT The application of circular economy, which aims to maximize efficiency and reduce waste, to renewable energy sources necessitates, given the intermittent nature of the latter, robust energy storage solutions to ensure grid stability and avoid wasting energy.
Ó. Martín‐Llorente   +4 more
wiley   +1 more source

Supersampled Scanning Transmission X‐Ray Microscopy for High‐Resolution Vibration‐Independent Time‐Resolved Imaging

open access: yesSmall, EarlyView.
ABSTRACT Scanning transmission x‐ray microscopy (STXM) is a nanoscale imaging technique that can utilize several powerful contrast mechanisms for the quantitative mapping of chemical and physical materials properties. Spatial resolutions down to 7 nm at the soft x‐ray energy range have been demonstrated.
Simone Finizio   +6 more
wiley   +1 more source

Rolling OFDM for Image Sensor Based Optical Wireless Communication

open access: yesIEEE Photonics Journal, 2019
Orthogonal frequency-division multiplexing (OFDM) is a digital multicarrier modulation scheme that is employed in broadband wired and wireless communication as an effective solution with inter-symbol interference caused by a multipath channel.
Huy Nguyen   +3 more
doaj   +1 more source

“It's Not Equality, …It's Not Humanizing:” Content‐Area Teachers' Tensions Between CCR Curriculum and Linguistically Responsive Professional Development

open access: yesTESOL Quarterly, EarlyView.
Abstract This qualitative study explores how secondary content‐area teachers of emergent bilingual (EB) students navigate tensions between linguistically responsive professional development (PD) and the implementation of state‐mandated College and Career Readiness (CCR) curricula in south Texas.
Caryn Calisi   +8 more
wiley   +1 more source

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