Results 111 to 120 of about 15,440 (218)

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

Geometric Models of Rolling-Shutter Cameras

open access: yes, 2005
Cameras with rolling shutters are becoming more common as low-power, low-cost CMOS sensors are being used more frequently in cameras. The rolling shutter means that not all scanlines are exposed over the same time interval. The effects of a rolling shutter are noticeable when either the camera or objects in the scene are moving and can lead to ...
Meingast, Marci   +2 more
openaire   +2 more sources

Mujeres Públicas and women in public: Scrutinising the history of prostitution in eighteenth‐ and nineteenth‐century Mexico

open access: yesGender &History, EarlyView.
Abstract Past studies of prostitution have mislabelled Mexican women as prostitutes when it is not clear that they had engaged in transactional sex. Here, we examine the history of prostitution between 1750 and 1865, detailing both legal frameworks and judicial evidence to address the reasons for the inflation of prostitution's presence in Mexico ...
Nora E. Jaffary, Luis Londoño
wiley   +1 more source

Far From Routine: Employers' Recruitment and Control Strategies in Two Low Wage Sectors

open access: yesHuman Resource Management Journal, EarlyView.
ABSTRACT Contrary to HRM's prevailing view that low wage work is routine and not requiring specific HR strategies, this study reveals how employers within low wage sectors pursue active and diverse strategies to segment the labour force and shape the work package.
Eva Herman, Jill Rubery, Gail Hebson
wiley   +1 more source

Design and Implementation of a Novel Compatible Encoding Scheme in the Time Domain for Image Sensor Communication

open access: yesSensors, 2016
This paper presents a modulation scheme in the time domain based on On-Off-Keying and proposes various compatible supports for different types of image sensors. The content of this article is a sub-proposal to the IEEE 802.15.7r1 Task Group (TG7r1) aimed
Trang Nguyen   +2 more
doaj   +1 more source

Shape and deformation measurement using heterodyne range imaging technology [PDF]

open access: yes, 2006
Range imaging is emerging as a promising alternative technology for applications that require non-contact visual inspection of object deformation and shape.
Conroy, Richard M.   +4 more
core   +1 more source

Sanctions, National Security, and Free Speech

open access: yesGlobal Policy, EarlyView.
ABSTRACT A fundamental, but largely overlooked, aspect of the New Washington Consensus is the use of national security arguments to restrict speech and punish disfavored speakers. Although the United States has a longer history of using sanctions to restrict speech in the terrorism context, it has recently applied sanctions to restrict political speech,
Joshua Andresen
wiley   +1 more source

Relative Position Estimation Using Cross Filter for Rolling-Shutter Cameras

open access: yesIEEE Photonics Journal
We propose an estimation method of the relative position of a light emitting diode (LED) from a rolling-shutter (RS) camera with a cross filter (CF).
Daisuke Sekimoto   +3 more
doaj   +1 more source

AutoChamber: A broadly accessible 3D‐printed floating chamber to automate measurements of greenhouse gas emissions from surface waters

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Fresh waters provide environmental conditions that favour microbial CO2 and CH4 production, leading to the release of large quantities of greenhouse gases (GHG) to the atmosphere. Despite their importance, these fluxes remain poorly defined, weakening estimates of global GHG budgets that are critical in implementing effective climate ...
Benjamin J. Archer   +2 more
wiley   +1 more source

Region-of-Interest Signaling Vehicular System Using Optical Camera Communications

open access: yesIEEE Photonics Journal, 2017
This technical paper introduces an optical camera communication system for vehicles. The purpose of the communication system incorporated into car (using existing light-emitting diode (LED) lights and ordinary cameras) is to add region-of-interest ...
Trang Nguyen   +2 more
doaj   +1 more source

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