scholarly journals Modeling the Spectral Properties of Obtrusive Light Incident on a Window: Application to Montréal, Canada

2021 ◽  
Vol 13 (14) ◽  
pp. 2767
Author(s):  
Martin Aubé ◽  
Julien-Pierre Houle ◽  
Justine Desmarais ◽  
Nikki Veilleux ◽  
Émie Bordeleau
Keyword(s):  
Spectral Properties ◽  
Space Station ◽  
Epidemiological Studies ◽  
Spectral Irradiance ◽  
Source Spectrum ◽  
Color Information ◽  
International Space ◽  
Melatonin Suppression ◽  
The City ◽  
Suppression Index

This paper describes the use of a new obtrusive light module of the Illumina v2 model to estimate the light that may enter bedroom windows. We used the following as input to the model: (1) the sources’ flux and spectrum derived from the color images taken by astronauts from the International Space Station (ISS), (2) an association between source spectrum and angular emission, and (3) a per zone inventory of obstacles properties and lamp height. The model calculates the spectral irradiance incident to buildings’ windows taking into account the orientation of the street. By using the color information from an ISS image, we can classify pixels as a function of their spectra. With the same image, it is also possible to determine the upward photopic radiance for each pixel. Both serve as inputs to the model to calculate the spectral irradiance on any window. By having the spectral irradiance, it is possible to determine the Melatonin Suppression Index and the photopic irradiance on the window. Such information can later be used to perform epidemiological studies. The new methodology is applied to the city of Montréal in Canada for a set of houses’ locations. The computations are made for 2013 (pre-LED era).

scholarly journals Evaluating the Potential Health Impact of Obtrusive Light: Application to Montréal, Canada

2021 ◽  
Author(s):  
Martin Aubé ◽  
Julien-Pierre Houle ◽  
Justine Desmarais ◽  
Nikki Veilleux ◽  
Émie Bordeleau
Keyword(s):  
Space Station ◽  
Health Impact ◽  
Epidemiological Studies ◽  
Spectral Irradiance ◽  
Source Spectrum ◽  
Color Information ◽  
Potential Health ◽  
International Space ◽  
Melatonin Suppression ◽  
Suppression Index

This paper describes the use of a new obtrusive light module of the Illumina v2 model to estimate the light that may enter bedroom windows. We used as input to the model, 1- the sources’ flux and spectrum derived from the color images taken by astronauts from the international space station, 2- an association between source spectrum and angular emission, and 3- a per zone inventory of obstacles properties and lamp height. The model calculate the spectral irradiance incident to buildings’ windows taking into account for the orientation of the street. By using the color information from an ISS image, we can classify pixels as a function of their spectra. With the same image, it is also possible to determine the upward photopic radiance for each pixel. Both serve as inputs to the model to calculate the spectral irradiance on any window. By having the spectral irradiance, it is possible to determine the Melatonin Suppression Index and the photopic irradiance on the window. Such information can later be used to perform epidemiological studies. The new methodology is applied to the case of Montréal in Canada for a set of houses’ locations. The computations are made for 2013 (pre-LED era).

Solar Spectral Irradiance Variability in November/December 2012: Comparison of Observations by Instruments on the International Space Station and Models

Solar Physics ◽  
2014 ◽  
Vol 289 (12) ◽  
pp. 4433-4452 ◽  
Author(s):  
G. Thuillier ◽  
G. Schmidtke ◽  
C. Erhardt ◽  
B. Nikutowski ◽  
A. I. Shapiro ◽  
...  
Keyword(s):  
International Space Station ◽  
Space Station ◽  
Spectral Irradiance ◽  
International Space ◽  
Solar Spectral Irradiance

Human factors assessment of International Space Station (ISS) medical equipment packs

2005 ◽  
Author(s):  
Danielle Paige Smith ◽  
Vicky E. Byrne ◽  
Cynthia Hudy ◽  
Mihriban Whitmore
Keyword(s):  
Human Factors ◽  
International Space Station ◽  
Medical Equipment ◽  
Space Station ◽  
International Space

Dose Tracker Application for Collecting Medication Use Data from International Space Station Crew

2020 ◽  
Vol 91 (1) ◽  
pp. 41-45 ◽  
Author(s):  
Virginia. E. Wotring ◽  
LaRona K. Smith
Keyword(s):  
Data Collection ◽  
International Space Station ◽  
Sleep Disturbances ◽  
Space Station ◽  
Medication Use ◽  
International Space ◽  
Flight Data ◽  
Open Questions ◽  
Share Data ◽  
Usability Feedback

INTRODUCTION: There are knowledge gaps in spaceflight pharmacology with insufficient in-flight data to inform future planning. This effort directly addressed in-mission medication use and also informed open questions regarding spaceflight-associated changes in pharmacokinetics (PK) and/or pharmacodynamics (PD).METHODS: An iOS application was designed to collect medication use information relevant for research from volunteer astronaut crewmembers: medication name, dose, dosing frequency, indication, perceived efficacy, and side effects. Leveraging the limited medication choices aboard allowed a streamlined questionnaire. There were 24 subjects approved for participation.RESULTS: Six crewmembers completed flight data collection and five completed ground data collection before NASA’s early study discontinuation. There were 5766 medication use entries, averaging 20.6 ± 8.4 entries per subject per flight week. Types of medications and their indications were similar to previous reports, with sleep disturbances and muscle/joint pain as primary drivers. Two subjects treated prolonged skin problems. Subjects also used the application in unanticipated ways: to note drug tolerance testing or medication holiday per research protocols, and to share data with flight surgeons. Subjects also provided usability feedback on application design and implementation.DISCUSSION: The volume of data collected (20.6 ± 8.4 entries per subject per flight week) is much greater than was collected previously (<12 per person per entire mission), despite user criticisms regarding app usability. It seems likely that improvements in a software-based questionnaire application could result in a robust data collection tool that astronauts find more acceptable, while simultaneously providing researchers and clinicians with useful data.Wotring VE, Smith LK. Dose tracker application for collecting medication use data from International Space Station crew. Aerosp Med Hum Perform. 2020; 91(1):41–45.

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