Results 11 to 20 of about 41,676 (242)

Reading Analysis for Barcode Scanner With Interference from LED-Based Lighting

open access: yesIEEE Access, 2019
This paper addresses reading failures of a barcode scanner interfered by light emitting diode (LED) lamps. It quantifies the reading performance in terms of timing signal-to-interference ratio (TSIR), in particular, as a function of modulation depth and ...
Xiong Deng   +3 more
doaj   +1 more source

Lighting of pedestrian and pedestrian-driving routes in a housing estate as a source of light pollution

open access: yesTechnical Transactions, 2022
This paper is devoted to the extremely important issue of lighting pedestrian and pedestrian-driving routes within a housing estate. Both aspects are discussed with regard to the safety of route users and the potential impact on the natural environment ...
Ściężor Tomasz
doaj   +1 more source

O descoperire arheologică unică la Noviodunum: arhetipuri, tipare şi producerea opaiţelor [PDF]

open access: yesPeuce, 2016
Noviodunum fortress, identified approx 2 km NW of the town of Isaccea, on the Danube’s left bank, became a landmark for the Roman and Roman-Byzantine period, due to both numerous historic sources and to archaeological finds that drew the picture of its ...
Florin TOPOLEANU, Laurent CHRZANOVSKI
doaj  

Interleaving-based converter system with features of external auxiliary triggering and universal line input for driving medical laser equipment

open access: yesThe Journal of Engineering, 2019
A novel power converter system to drive medical laser equipment is proposed here, which has the major features of interleaving, external auxiliary triggering, and lighting period control.
Chih-Lung Shen   +2 more
doaj   +1 more source

On the issue of taking into account the light climate in the calculation and design of natural lighting in buildings

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2022
Objective. The aim of the study is to develop an algorithm for the method of calculating the area of light openings of buildings, which allows the transition to a differentiated accounting of light climate resources at any geographical point.Method.
H. M. Guketlov, I. Z. Srukov
doaj   +1 more source

School and community reopening during the COVID-19 pandemic: a mathematical modelling study

open access: yesRoyal Society Open Science, 2022
Operating schools safely during the COVID-19 pandemic requires a balance between health risks and the need for in-person learning. Using demographic and epidemiological data between 31 July and 23 November 2020 from Toronto, Canada, we developed a ...
Pei Yuan   +9 more
doaj   +1 more source

AULOS AND CROTALS IN GRAECO-ROMAN EGYPT [PDF]

open access: yesJournal of the General Union of Arab Archaeologists, 2018
(En) aulos and crotals are two totally different musical instruments. Aulos is a wind instrument, while the crotals are of percussion type. They were preferably played in Egypt during the Graeco-roman period.
Marwa Elkady
doaj   +1 more source

Opaiţe plastice descoperite la Durostorum–Ostrov (Ferma 4) [PDF]

open access: yesPeuce, 2017
The Lower Danube Museum of Călărași houses over 1400 Roman lamps, most of them discovered by the author of this paper during field research and preventive or systematic excavations made within the territory of the civil settlement of Durostorum (Ostrov ...
Dan ELEFTERESCU
doaj  

Power Quality and Harmonic Analysis of End User Devices

open access: yesEnergies, 2012
Among the non-linear loads used in household, Compact Fluorescent Lamps (CFLs) and LED lamps are becoming more widespread, while incandescent lamps are intended to be replaced by these types of lighting devices.
Sonia Leva, Alberto Dolara
doaj   +1 more source

Recycling and Material Flow Analysis of End-of-Life Fluorescent Lamps in South Korea

open access: yesEnergies, 2022
Proper management and treatment of end-of-life fluorescent lamps with a toxic metal of mercury has attracted critical concern in the solid waste community.
Yong-Chul Jang   +4 more
doaj   +1 more source

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