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Pocock, T. |
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Title |
Advanced lighting technology in controlled environment agriculture |
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Journal Article |
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Year |
2016 |
Publication |
Lighting Research and Technology |
Abbreviated Journal |
Lighting Research and Technology |
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48 |
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1 |
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83-94 |
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Keywords |
Plants; Lighting |
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Abstract |
There is a recent awareness of the importance of plants in our everyday lives. Light is a requirement for plants and serves two important roles. It provides energy for growth and provides information that elicits plant responses including, among others, plant shape, pigmentation, nutritional content and resistance to stress. Light is paradoxical to plants, it is a requirement however, in excess it is damaging. Plants sense and interpret light through many families of photoreceptors and through the energy state of the photosynthetic apparatus. Light emitting diodes (LEDs) are quickly replacing traditional light sources for human applications, and currently there is effort being put into tailoring these technology platforms for the plant community. Potential plant sensing pathways and the spectral effects on pigmentation and photochemistry in red lettuce are described. |
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1477-1535 |
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LoNNe @ kyba @ |
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1383 |
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Choi, T.; Shao, X.; Cao, C.; Weng, F. |
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Title |
Radiometric Stability Monitoring of the Suomi NPP Visible Infrared Imaging Radiometer Suite (VIIRS) Reflective Solar Bands Using the Moon |
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Journal Article |
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2016 |
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Remote Sensing |
Abbreviated Journal |
Remote Sensing |
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8 |
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1 |
Pages |
15 |
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Instrumentation |
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The Suomi NPP (S-NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) performs the scheduled lunar roll maneuver on a monthly basis. The lunar calibration coefficients and lunar F-factor are calculated by taking the ratio of the lunar observed radiance to the simulated radiance from the Miller and Turner (MT) lunar model. The lunar F-factor is also validated against that derived from the VIIRS Solar Diffuser (SD). The MT model-based lunar F-factors in general agree with SD F-factors. The Lunar Band Ratio (LBR) is also derived from two channel lunar radiances and is implemented in the National Oceanic and Atmospheric Administration (NOAA) Integrated Calibration and Validation System (ICVS) to monitor the VIIRS long-term radiometric performance. The lunar radiances at pixels are summed for each of the VIIRS Reflective Solar Bands (RSBs) and normalized by the reference band M11 which has the most stable SD-based calibration coefficient. LBRs agree with the SD based F-factor ratios within one percent. Based on analysis with these two independent lunar calibration methods, SD-based and LBR-based calibrations show a lifetime consistency. Thus, it is recommended that LBR be used for both VIIRS radiometric calibration and lifetime stability monitoring. |
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2072-4292 |
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LoNNe @ kyba @ |
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1384 |
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Matsuda, R.; Yamano, T.; Murakami, K.; Fujiwara, K. |
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Effects of spectral distribution and photosynthetic photon flux density for overnight LED light irradiation on tomato seedling growth and leaf injury |
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Journal Article |
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Year |
2016 |
Publication |
Scientia Horticulturae |
Abbreviated Journal |
Scientia Horticulturae |
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198 |
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363-369 |
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Plants |
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0304-4238 |
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LoNNe @ kyba @ |
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1387 |
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Tian, J.F.; Deng, L.C.; Zhang, X.B.; Lu, X.-M.; Sun, J.J.; Liu, Q.L.; Zhou, Q.; Yan, Z.Z., Xin, Y.; Wang, K.; Jiang, X.-J.; Luo, Z.Q., Yang, J. |
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Title |
Optical Observing Conditions at Delingha Station |
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Report |
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Year |
2016 |
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n/a |
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n/a |
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n/a |
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n/a |
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Skyglow; China; Tibet; SONG; Delingha; Qinghai-Tibetan Plateau; Tibetan Plateau |
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SONG is a global ground based network of 1 meter telescopes for stellar time-domain science, an international collaboration involving many countries across the world. In order to enable a favourable duty cycle, the SONG network plans to create a homogeneous distribution of 4 nodes in each of the northern and southern hemispheres. A natural possibility was building one of the northern nodes in East Asia, preferably on the Qinghai-Tibetan Plateau. During the last decade, a great deal of effort has been invested in searching for high a quality site for ground based astronomy in China, since this has been one of the major concerns for the development of Chinese astronomy. A number of sites on the plateau have been in operation for many years, but most of them are used only for radio astronomy, as well as small optical telescopes for applied astronomy. Several potential sites for large optical instruments have been identified by the plateau site survey, but as yet none of them have been adequately quantitatively characterised. Here we present results from a detailed multi-year study of the Delingha site, which was eventually selected for the SONG-China node. We also describe the site monitoring system that will allow an isolated SONG and 50BiN node to operate safely in an automated mode. |
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English |
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IDA @ john @ |
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1391 |
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Author |
Bergs, R. |
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Title |
Exploring the Spatial Economy by Night |
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Report |
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Year |
2016 |
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n/a |
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Economics; DMSP; DMSP-OLS; remote sensing; spatial distribution |
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Night satellite images may offer an interesting tool to generate socio-economically relevant data and to analyse the evolution of space, e.g. cities or rural areas, and how spatial units interact over time. This paper is just an essay with preliminary ideas for discussion; the approach is explorative-methodological rather than one putting an empirical focus on a defined research item. Empirics discussed in this paper are just various examples collected from tinkering.
The DMSP-OLS images and adequate image analysis software such as ImageJ (in some cases to be complemented by further statistics software) provide a useful perspective for the analysis of spatial change. Since there is a stable and significant correlation between social and economic variables (population density, GDP PPP) and luminosity, such image analyses contain important information on spatial economic development. Analysis of night imagery is certainly not adequate to replace the statistical analysis of regional data, but it is a good tool to confirm and illustrate patterns of spatial heterogeneity and spatial dependence over time. |
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PRAC – Bergs & Issa Partnership Co., Bad Soden, Germany |
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English |
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Planung & Forschung Spolicy Research & Consultancy Discussion Paper Series |
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IDA @ john @ |
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1392 |
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