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European phenological response to climate change matches the warming pattern
A Menzel, TH Sparks, N Estrella, E Koch, A Aasa, R Ahas, K Alm‐Kübler, ...
Global change biology 12 (10), 1969-1976, 2006
35122006
Onset of spring starting earlier across the Northern Hemisphere
MD Schwartz, R Ahas, A Aasa
Global change biology 12 (2), 343-351, 2006
12102006
Using mobile positioning data to model locations meaningful to users of mobile phones
R Ahas, S Silm, O Järv, E Saluveer, M Tiru
Journal of urban technology 17 (1), 3-27, 2010
4802010
Evaluating passive mobile positioning data for tourism surveys: An Estonian case study
R Ahas, A Aasa, A Roose, Ü Mark, S Silm
Tourism Management 29 (3), 469-486, 2008
4592008
Changes in European spring phenology
R Ahas, A Aasa, A Menzel, VG Fedotova, H Scheifinger
International Journal of Climatology: A Journal of the Royal Meteorological …, 2002
4182002
Seasonal tourism spaces in Estonia: Case study with mobile positioning data
R Ahas, A Aasa, Ü Mark, T Pae, A Kull
Tourism management 28 (3), 898-910, 2007
3722007
Location based services—new challenges for planning and public administration?
R Ahas, Ü Mark
Futures 37 (6), 547-561, 2005
3162005
Daily rhythms of suburban commuters’ movements in the Tallinn metropolitan area: Case study with mobile positioning data
R Ahas, A Aasa, S Silm, M Tiru
Transportation Research Part C: Emerging Technologies 18 (1), 45-54, 2010
3132010
Measuring tourism destinations using mobile tracking data
J Raun, R Ahas, M Tiru
Tourism Management 57, 202-212, 2016
3122016
The use of tracking technologies in tourism research: The first decade
N Shoval, R Ahas
Tourism Geographies 18 (5), 587-606, 2016
3062016
Variations of the climatological growing season (1951-2000) in Germany compared with other countries
A Menzel, G Jakobi, R Ahas, H Scheifinger, N Estrella
International Journal of climatology 23 (7), 793-812, 2003
2972003
Understanding monthly variability in human activity spaces: A twelve-month study using mobile phone call detail records
O Järv, R Ahas, F Witlox
Transportation Research Part C: Emerging Technologies 38, 122-135, 2014
2932014
Variation in cold hardiness and carbohydrate concentration from dormancy induction to bud burst among provenances of three European oak species
X Morin, T Améglio, R Ahas, C Kurz-Besson, V Lanta, F Lebourgeois, ...
Tree physiology 27 (6), 817-825, 2007
2642007
Long-term phyto-, ornitho-and ichthyophenological time-series analyses in Estonia
R Ahas
International Journal of Biometeorology 42, 119-123, 1999
2611999
The phenological calendar of Estonia and its correlation with mean air temperature
R Ahas, J Jaagus, A Aasa
International Journal of Biometeorology 44, 159-166, 2000
1942000
Everyday space–time geographies: using mobile phone-based sensor data to monitor urban activity in Harbin, Paris, and Tallinn
R Ahas, A Aasa, Y Yuan, M Raubal, Z Smoreda, Y Liu, C Ziemlicki, M Tiru, ...
International Journal of Geographical Information Science 29 (11), 2017-2039, 2015
1842015
Ethnic differences in activity spaces: A study of out-of-home nonemployment activities with mobile phone data
S Silm, R Ahas
Annals of the Association of American Geographers 104 (3), 542-559, 2014
1632014
Atmospheric mechanisms governing the spatial and temporal variability of phenological phases in central Europe. Int J Climatol
H Scheifinger, E Koch, R Ahas
Int. J. Climatol 22, 1739-1755, 2002
1542002
Ethnic differences in activity spaces as a characteristic of segregation: A study based on mobile phone usage in Tallinn, Estonia
O Järv, K Müürisepp, R Ahas, B Derudder, F Witlox
Urban Studies 52 (14), 2680-2698, 2015
1522015
Dynamic cities: Location-based accessibility modelling as a function of time
O Järv, H Tenkanen, M Salonen, R Ahas, T Toivonen
Applied geography 95, 101-110, 2018
1472018
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