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Author Lazar, M. url  doi
openurl 
  Title Shedding Light on the Global Distribution of Economic Activity Type Journal Article
  Year 2010 Publication The Open Geography Journal Abbreviated Journal Togeogj  
  Volume 3 Issue 1 Pages 147-160  
  Keywords Economics; Remote Sensing  
  Abstract Collection of data on economic variables, especially sub-national income levels, is problematic, due to various shortcomings in the data collection process. Additionally, the informal economy is often excluded from official statistics. Nighttime lights satellite imagery and the LandScan population grid provide an alternative means for measuring economic activity. We have developed a model for creating a disaggregated map of estimated total (formal plus informal) economic activity for countries and states of the world. Regression models were developed to calibrate the sum of lights to official measures of economic activity at the sub-national level for China, India, Mexico, and the United States and at the national level for other countries of the world, and subsequently unique coefficients were derived. Multiplying the unique coefficients with the sum of lights provided estimates of total economic activity, which were spatially distributed to generate a spatially disaggregated 1 km2 map of total economic activity.  
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  ISSN 1874-9232 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number GFZ @ kyba @ Serial 2440  
Permanent link to this record
 

 
Author Schulte-Römer, N. url  doi
openurl 
  Title Research in the Dark Type Journal Article
  Year 2019 Publication Nature and Culture Abbreviated Journal  
  Volume 14 Issue 2 Pages 215-227  
  Keywords Society; Review  
  Abstract  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1558-6073 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number GFZ @ kyba @ Serial 2546  
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Author Arnott, J. T. url  openurl
  Title Growth Response of White and Englemann Spruce Seedlings to Extended Photoperiod Using Three Light Intensities Type Report
  Year 1982 Publication Technical Report: Pacific Forestry Centre Abbreviated Journal  
  Volume Issue Pages  
  Keywords Plants  
  Abstract Four seedlots of white spruce (Picea glauca (Moench) Voss) and three of Engelmann spruce (Picea engelmannii Parry), covering a range of 10 degrees of latitude and a range of altitudes, were sown in BC/ CFS Styroblocks and grown in a heated greenhouse and an unheated shadehouse, using incandescent light to provide a 19-h photoperiod. Four intensities of lighting were used: 0, 100,200, and 400 Ix. A second experiment with the same seedlots was conducted in growth rooms that were programmed to evaluate the effect of low night temperature on seedling shoot growth when the photoperiod was extended to 19 h, using a light intensity of 200 Ix.

Shoot length of white and Engelmann spruce seedlings grown under an extended daylength of 100 Ix were significantly taller than the control (0 Ix). There were no significant differences in shoot length or weight among the three intensities of light used to extend the photoperiod for all seedlots except the southern latitude-low elevation population of Engelmann spruce. The more northern populations of white spruce and the high altitude populations of Engelmann spruce did not require light intensities higher than 100 Ix to maintain apical growth. Low night temperature (7°C) did produce significantly smaller seedlings than the warm night (1SoC) regime. However, terminal resting buds of seedlings grown under the cool night regime did not form any sooner than on those seedlings grown under warm nights.
 
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  Notes Approved no  
  Call Number IDA @ intern @ Serial 2372  
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Author Bissonnette, T.H. url  doi
openurl 
  Title Modification of mammalian sexual cycles. V. The avenue of reception of sexually stimulating light Type Journal Article
  Year 1936 Publication Journal of Comparative Psychology Abbreviated Journal Journal of Comparative Psychology  
  Volume 22 Issue 1 Pages 93-103  
  Keywords Animals  
  Abstract The author subjected female ferrets of controlled previous light and sexual history to added nightly lighting (1) without hoods, (2) with hoods which exposed the eyes through holes, and (3) with heads covered by light-tight hoods. The conditions of decreased light on the eyes were associated with delayed oestrus. “The facts indicate that the eyes are the receptors for photo-periodic sexual stimulation in ferrets, mediated by the anterior hypophysis, and that closing their eyes in sleep does not prevent the activation.”  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0093-4127 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number GFZ @ kyba @ Serial 2400  
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Author Brundin, T.M. url  doi
openurl 
  Title Light reactions of terrestrial amphipods Type Journal Article
  Year 1913 Publication Journal of Animal Behavior Abbreviated Journal Journal of Animal Behavior  
  Volume 3 Issue 5 Pages 334-352  
  Keywords Animals  
  Abstract Investigated the responses of amphipods to light. A series of experiments were conducted to determine the mechanism of the phototactic response, and the cause of reversal in the sense of phototaxis. Varying numbers of Ss were tested on reaction time to light and heat. The more terrestrial forms among the amphipoda were more positive. Concluded that the conditions which brought about the positive phototaxis were the same, as prevailed in the environment of the more terrestrial amphipoda. Heat and dryness favored positive reactions, while cold, moisture and silence favored negative reactions. The small specimen of O. traskiana had shorter periods of negative reactions than the more sluggish specimen, which could be made positive to the light by enforced activity, dryness and heat, resulting in metabolic processes through which chemical responses necessary for a response took place. The modification of the response helped in adaptation. (PsycINFO Database Record (c) 2016 APA, all rights reserved)  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0095-9928 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number GFZ @ kyba @ Serial 2419  
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