Results 1 to 10 of about 2,188 (203)

An Overview of Sky Brightness Surrounding Timau National Observatory (TNO), Indonesia

Indonesian Journal of Geography
This study aims to analyze skylight conditions surrounding the newly constructed Timau National Observatory (TNO) in Kupang, Indonesia. The analysis was carried out with the primary reason of determining the initial conditions and surroundings of the ...
Clara Yono Yatini, Jehunias L. Tanesib, Siti Maryam, A. Gunawan Admiranto, M. Ferdhiansyah Noor   +4 more
doaj   +1 more source

Performance of Smartphone BDS-3/GPS/Galileo Multi-Frequency Ionosphere-Free Precise Code Positioning

Remote Sensing, 2023
The continuously improving performance of mass-market global navigation satellite system (GNSS) chipsets is enabling the prospect of high-precision GNSS positioning for smartphones.
Ruiguang Wang, Chao Hu, Zhongyuan Wang, Fang Yuan, Yangyang Wang   +4 more
doaj   +1 more source

Device for automatic measurement of light pollution of the night sky

Scientific Reports, 2022
Research on light pollution of the night sky has been carried out in Toruń, Poland since 2017. Initially, the measurements were conducted within a network of 24 points using a handheld sky quality meter with lens (SQM-L) photometer (Unihedron, Canada ...
Dominika Karpińska, Mieczysław Kunz
doaj   +1 more source

On the correspondence between surface UV observations and TOMS determinations of surface UV: a potential method for quality evaluating world surface UV observations

Annals of Geophysics, 2003
A comparison of erythemally weighted surface UV irradiance observations with similar NASA TOMS surface UV determinations is described. Comparisons are made for two observation periods: the Robertson-Berger (R-B) meter period from 1974 to the ...
C. Cornwall, G. Hodges, E. Weatherhead, K. Lantz, P. Disterhoft, J. Augustine, D. Theisen, J. DeLuisi, I. Petropavlovskikh, A. Stevermer   +9 more
doaj   +1 more source

Health Impacts of Surface Ozone in Outdoor and Indoor Environments of Hattar Industrial Units, KPK, Pakistan

Atmosphere, 2022
This research was carried out to analyze variations in indoor and outdoor ozone concentrations and their health impact on local communities of megacities in Pakistan.
Suneela Jadoon, Shamyla Nawazish, Zahid Majeed, Ayesha Baig, Syed Majid Bukhari, Abu ul Hassan Faiz, Abdulnoor A. J. Ghanim, Muhammad Irfan, Saifur Rahman, Farid Ullah   +9 more
doaj   +1 more source

DEVELOPING A SOLAR HEATING SYSTEM FOR HEATING SWEET COLOUR PEPPER GREENHOUSE [PDF]

Journal of Soil Sciences and Agricultural Engineering, 2010
The objective of the present study was to evaluate the effect of solar heating system on the microclimatic conditions of sweet colour pepper greenhouse during winter season of 2009-2010. The use of solar energy system for greenhouse heating in winter and
Y. Mohamed, S. Abdellatif
doaj   +1 more source

Determinación del grado de contaminación luminosa producto de las luces artificiales en el sector Oeste de la ciudad de Managua, Nicaragua. Periodo diciembre 2016 a enero 2017

Revista Científica de FAREM-Estelí, 2020
En este estudio se pretende dar los primeros pasos para cuantificar la contaminación lumínica como consecuencia de la iluminación artificial en el occidente de la ciudad de Managua, Nicaragua.
Humberto A. Garcia Montano, Maarcel Chow Martinez, Rosalba Silva Soza   +2 more
doaj   +1 more source

Light Pollution in the City of Zagreb, December 2010 Through July 2011

Rudarsko-geološko-naftni Zbornik, 2015
Light pollution can be defined as an increase in the amount of the light levels in the environment caused by the human activity. Although a part of the electromagnetic spectrum just as e.g.
Indramani Sharma, Ana Mostečak, Željko Andreić   +2 more
doaj   +1 more source

Machine-Learning-Based Monitoring of Night Sky Brightness Using Sky Quality Meters and Multi-Source Remote Sensing

Remote Sensing
With the rapid pace of urbanization, light pollution has emerged as a critical environmental issue. Evaluating and managing light pollution effectively is challenging, as traditional monitoring methods often fail to capture its spatial distribution and ...
Siyue Zheng, Yanrong Chen, Anwar Eziz, Alishir Kurban, Tim Van de Voorde, Philippe De Maeyer   +5 more
doaj   +1 more source

Decade-Long Photometric Observations of Light Pollution and Cloud Effects on Night Sky Brightness in Hong Kong

Remote Sensing
This study examines how night sky brightness (NSB) in Hong Kong has evolved over the past decade. It combines recent datasets covering 2019–2023 with the earlier dataset analyzed in a previous study (2010–2013).
Chu Wing So, Chun Shing Jason Pun, Shengjie Liu   +2 more
doaj   +1 more source