ORCID Profile
0000-0001-6649-0653
Current Organisations
NASA Jet Propulsion Laboratory
,
American University of Beirut
,
Johns Hop
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Publisher: American Astronomical Society
Date: 12-2007
DOI: 10.1086/523853
Publisher: JMIR Publications Inc.
Date: 07-11-2019
Abstract: ith thousands of health apps in app stores globally, it is crucial to systemically and thoroughly evaluate the quality of these apps due to their potential influence on health decisions and outcomes. The Mobile App Rating Scale (MARS) is the only currently available tool that provides a comprehensive, multidimensional evaluation of app quality, which has been used to compare medical apps from American and European app stores in various areas, available in English, Italian, Spanish, and German. However, this tool is not available in Arabic. his study aimed to translate and adapt MARS to Arabic and validate the tool with a s le of health apps aimed at managing or preventing obesity and associated disorders. e followed a well-established and defined “universalist” process of cross-cultural adaptation using a mixed methods approach. Early translations of the tool, accompanied by confirmation of the contents by two rounds of separate discussions, were included and culminated in a final version, which was then back-translated into English. Two trained researchers piloted the MARS in Arabic (MARS-Ar) with a s le of 10 weight management apps obtained from Google Play and the App Store. Interrater reliability was established using intraclass correlation coefficients (ICCs). After reliability was ascertained, the two researchers independently evaluated a set of additional 56 apps. ARS-Ar was highly aligned with the original English version. The ICCs for MARS-Ar (0.836, 95% CI 0.817-0.853) and MARS English (0.838, 95% CI 0.819-0.855) were good. The MARS-Ar subscales were highly correlated with the original counterparts ( i P /i & .001). The lowest correlation was observed in the area of usability ( i r /i =0.685), followed by aesthetics ( i r /i =0.827), information quality ( i r /i =0.854), engagement ( i r /i =0.894), and total app quality ( i r /i =0.897). Subjective quality was also highly correlated ( i r /i =0.820). ARS-Ar is a valid instrument to assess app quality among trained Arabic-speaking users of health and fitness apps. Researchers and public health professionals in the Arab world can use the overall MARS score and its subscales to reliably evaluate the quality of weight management apps. Further research is necessary to test the MARS-Ar on apps addressing various health issues, such as attention or anxiety prevention, or sexual and reproductive health.
Publisher: Springer Science and Business Media LLC
Date: 18-05-2022
DOI: 10.1038/S41586-022-04616-1
Abstract: Reservoirs of dense atomic gas (primarily hydrogen) contain approximately 90 per cent of the neutral gas at a redshift of 3, and contribute to between 2 and 3 per cent of the total baryons in the Universe
Publisher: American Astronomical Society
Date: 04-09-2018
Publisher: Springer Science and Business Media LLC
Date: 08-2015
DOI: 10.1038/NATURE14616
Abstract: The specifics of how galaxies form from, and are fuelled by, gas from the intergalactic medium remain uncertain. Hydrodynamic simulations suggest that 'cold accretion flows'--relatively cool (temperatures of the order of 10(4) kelvin), unshocked gas streaming along filaments of the cosmic web into dark-matter halos--are important. These flows are thought to deposit gas and angular momentum into the circumgalactic medium, creating disk- or ring-like structures that eventually coalesce into galaxies that form at filamentary intersections. Recently, a large and luminous filament, consistent with such a cold accretion flow, was discovered near the quasi-stellar object QSO UM287 at redshift 2.279 using narrow-band imaging. Unfortunately, imaging is not sufficient to constrain the physical characteristics of the filament, to determine its kinematics, to explain how it is linked to nearby sources, or to account for its unusual brightness, more than a factor of ten above what is expected for a filament. Here we report a two-dimensional spectroscopic investigation of the emitting structure. We find that the brightest emission region is an extended rotating hydrogen disk with a velocity profile that is characteristic of gas in a dark-matter halo with a mass of 10(13) solar masses. This giant protogalactic disk appears to be connected to a quiescent filament that may extend beyond the virial radius of the halo. The geometry is strongly suggestive of a cold accretion flow.
Publisher: SPIE
Date: 16-07-2010
DOI: 10.1117/12.856644
Publisher: American Astronomical Society
Date: 12-2007
DOI: 10.1086/516642
Publisher: American Astronomical Society
Date: 06-2018
Publisher: JMIR Publications Inc.
Date: 03-03-2020
DOI: 10.2196/16956
Abstract: With thousands of health apps in app stores globally, it is crucial to systemically and thoroughly evaluate the quality of these apps due to their potential influence on health decisions and outcomes. The Mobile App Rating Scale (MARS) is the only currently available tool that provides a comprehensive, multidimensional evaluation of app quality, which has been used to compare medical apps from American and European app stores in various areas, available in English, Italian, Spanish, and German. However, this tool is not available in Arabic. This study aimed to translate and adapt MARS to Arabic and validate the tool with a s le of health apps aimed at managing or preventing obesity and associated disorders. We followed a well-established and defined “universalist” process of cross-cultural adaptation using a mixed methods approach. Early translations of the tool, accompanied by confirmation of the contents by two rounds of separate discussions, were included and culminated in a final version, which was then back-translated into English. Two trained researchers piloted the MARS in Arabic (MARS-Ar) with a s le of 10 weight management apps obtained from Google Play and the App Store. Interrater reliability was established using intraclass correlation coefficients (ICCs). After reliability was ascertained, the two researchers independently evaluated a set of additional 56 apps. MARS-Ar was highly aligned with the original English version. The ICCs for MARS-Ar (0.836, 95% CI 0.817-0.853) and MARS English (0.838, 95% CI 0.819-0.855) were good. The MARS-Ar subscales were highly correlated with the original counterparts (P .001). The lowest correlation was observed in the area of usability (r=0.685), followed by aesthetics (r=0.827), information quality (r=0.854), engagement (r=0.894), and total app quality (r=0.897). Subjective quality was also highly correlated (r=0.820). MARS-Ar is a valid instrument to assess app quality among trained Arabic-speaking users of health and fitness apps. Researchers and public health professionals in the Arab world can use the overall MARS score and its subscales to reliably evaluate the quality of weight management apps. Further research is necessary to test the MARS-Ar on apps addressing various health issues, such as attention or anxiety prevention, or sexual and reproductive health.
Publisher: American Astronomical Society
Date: 24-04-2014
Publisher: American Astronomical Society
Date: 17-01-2005
DOI: 10.1086/425251
Publisher: American Astronomical Society
Date: 18-03-2005
DOI: 10.1086/429993
Publisher: American Astronomical Society
Date: 18-03-2005
DOI: 10.1086/429377
Publisher: SPIE
Date: 24-09-2012
DOI: 10.1117/12.924729
Publisher: Oxford University Press (OUP)
Date: 03-08-2018
Publisher: American Astronomical Society
Date: 02-06-2016
Publisher: American Astronomical Society
Date: 26-06-2018
Publisher: American Astronomical Society
Date: 24-04-2014
Publisher: American Astronomical Society
Date: 12-2007
DOI: 10.1086/522088
Location: United States of America
No related grants have been discovered for Lilian Ghandour.