Institution
Stockholm University
Education•Stockholm, Sweden•
About: Stockholm University is a education organization based out in Stockholm, Sweden. It is known for research contribution in the topics: Population & Supernova. The organization has 21052 authors who have published 62567 publications receiving 2725859 citations. The organization is also known as: University of Stockholm & Stockholms universitet.
Topics: Population, Supernova, Galaxy, Large Hadron Collider, Arctic
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TL;DR: In this article, the authors analyze data on the sexual behavior of a random sample of individuals, and find that the cumulative distributions of the number of sexual partners during the twelve months prior to the survey decays as a power law with similar exponents for females and males.
Abstract: Many ``real-world'' networks are clearly defined while most ``social'' networks are to some extent subjective. Indeed, the accuracy of empirically-determined social networks is a question of some concern because individuals may have distinct perceptions of what constitutes a social link. One unambiguous type of connection is sexual contact. Here we analyze data on the sexual behavior of a random sample of individuals, and find that the cumulative distributions of the number of sexual partners during the twelve months prior to the survey decays as a power law with similar exponents $\alpha \approx 2.4$ for females and males. The scale-free nature of the web of human sexual contacts suggests that strategic interventions aimed at preventing the spread of sexually-transmitted diseases may be the most efficient approach.
1,476 citations
TL;DR: Based on theory from consumer behavior and cognitive psychology, the purpose of this paper is to discuss and test corporate image and customer satisfaction as two routes to customer loyalty as mentioned in this paper, which is consistent with high and low service expertise.
Abstract: Based on theory from consumer behavior and cognitive psychology, the purpose of this paper is to discuss and test corporate image and customer satisfaction as two routes to customer loyalty. Based on data from 600 individual customers categorized as having high or low service expertise of three companies within the package tour industry, a conceptual model is proposed and tested empirically using structural equation modeling. The data used in the study are included in The Norwegian Customer Satisfaction Barometer. The paper concludes by claiming that for complex services, corporate image and customer satisfaction are not two separate routes to customer loyalty. Corporate image impacts customer loyalty directly whereas customer satisfaction does not. This finding was consistent with high and low service expertise. These results challenge the disconfirmation paradigm which predicts customer satisfaction as the primary route to customer loyalty. From a managerial perspective, information regarding the relative strength of the two routes is vital with regard to resource allocation in order to improve customer loyalty.
1,442 citations
Bjerknes Centre for Climate Research1, Stockholm University2, Saint Petersburg State University3, Russian Academy of Sciences4, University of Cambridge5, Geological Museum6, Gas Technology Institute7, Lund University8, University of Copenhagen9, Alfred Wegener Institute for Polar and Marine Research10, University of Iceland11, University of New Hampshire12, Geological Survey of Sweden13, University of Oulu14, Aarhus University15, Ohio State University16, Geological Survey of Finland17, University of Bristol18, Leibniz Association19
TL;DR: In this paper, the maximum limits of the Eurasian ice sheets during four glaciations have been reconstructed: (1) the Late Saalian (>140 ka), (2) the Early Weichselian (100-80 ka),(3) the Middle Weichsellian (60-50 ka), and (4) the late Weichselsian (25-15 ka) based on satellite data and aerial photographs combined with geological field investigations in Russia and Siberia, and with marine seismic and sediment core data.
1,426 citations
Stockholm University1, Lawrence Berkeley National Laboratory2, University of California, Berkeley3, Pierre-and-Marie-Curie University4, Colorado College5, University of Colorado Boulder6, University of Utah7, Space Telescope Science Institute8, University of Tokyo9, University of Victoria10, Carnegie Institution for Science11, University of Oxford12, INAF13, Las Cumbres Observatory Global Telescope Network14, University of California, Santa Barbara15, Drexel University16, University of Bonn17, Japan Society for the Promotion of Science18, University of Barcelona19, Texas A&M University20, University of Pittsburgh21
TL;DR: Kowalski et al. as mentioned in this paper reported on work to increase the number of well-measured Type Ia supernovae (SNe Ia) at high redshifts.
Abstract: We report on work to increase the number of well-measured Type Ia supernovae (SNe Ia) at high redshifts. Light curves, including high signal-to-noise HST data, and spectra of six SNe Ia that were discovered during 2001 are presented. Additionally, for the two SNe with z > 1, we present groundbased J-band photometry from Gemini and the VLT. These are among the most distant SNe Ia for which ground based near-IR observations have been obtained. We add these six SNe Ia together with other data sets that have recently become available in the literature to the Union compilation (Kowalski et al. 2008). We have made a number of refinements to the Union analysis chain, the most important ones being the refitting of all light curves with the SALT2 fitter and an improved handling of systematic errors. We call this new compilation, consisting of 557 supernovae, the Union2
1,424 citations
Humboldt University of Berlin1, University of California, Berkeley2, Lawrence Berkeley National Laboratory3, University of Lisbon4, DSM5, University of Paris6, Harvard University7, University of Toronto8, Hamilton College9, Carnegie Institution for Science10, American Astronomical Society11, California Institute of Technology12, Centra13, University of California, Santa Cruz14, University of Arizona15, University of Illinois at Urbana–Champaign16, Dublin City University17, Stockholm University18, Université Paris-Saclay19, University of Oxford20, Fermilab21, Vanderbilt University22, European Southern Observatory23, University of Barcelona24, Southwestern College25, Rensselaer Polytechnic Institute26, Louisiana State University27, Western Kentucky University28, Texas A&M University29, University of Cambridge30
TL;DR: A new compilation of Type Ia supernovae (SNe Ia), a new data set of low-redshift nearby-Hubble-flow SNe, and new analysis procedures to work with these heterogeneous compilations is presented in this article.
Abstract: We present a new compilation of Type Ia supernovae (SNe Ia), a new data set of low-redshift nearby-Hubble-flow SNe, and new analysis procedures to work with these heterogeneous compilations This "Union" compilation of 414 SNe Ia, which reduces to 307 SNe after selection cuts, includes the recent large samples of SNe Ia from the Supernova Legacy Survey and ESSENCE Survey, the older data sets, as well as the recently extended data set of distant supernovae observed with the Hubble Space Telescope (HST) A single, consistent, and blind analysis procedure is used for all the various SN Ia subsamples, and a new procedure is implemented that consistently weights the heterogeneous data sets and rejects outliers We present the latest results from this Union compilation and discuss the cosmological constraints from this new compilation and its combination with other cosmological measurements (CMB and BAO) The constraint we obtain from supernovae on the dark energy density is ΩΛ = 0713+ 0027−0029(stat)+ 0036−0039(sys) , for a flat, ΛCDM universe Assuming a constant equation of state parameter, w, the combined constraints from SNe, BAO, and CMB give w = − 0969+ 0059−0063(stat)+ 0063−0066(sys) While our results are consistent with a cosmological constant, we obtain only relatively weak constraints on a w that varies with redshift In particular, the current SN data do not yet significantly constrain w at z > 1 With the addition of our new nearby Hubble-flow SNe Ia, these resulting cosmological constraints are currently the tightest available
1,420 citations
Authors
Showing all 21326 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| Hongjie Dai | 197 | 570 | 182579 |
| Hyun-Chul Kim | 176 | 4076 | 183227 |
| Richard S. Ellis | 169 | 882 | 136011 |
| Stanley B. Prusiner | 168 | 745 | 97528 |
| Anders Björklund | 165 | 769 | 84268 |
| Yang Yang | 164 | 2704 | 144071 |
| Tomas Hökfelt | 158 | 1033 | 95979 |
| Bengt Winblad | 153 | 1240 | 101064 |
| Zhenwei Yang | 150 | 956 | 109344 |
| Marvin Johnson | 149 | 1827 | 119520 |
| Jan-Åke Gustafsson | 147 | 1058 | 98804 |
| Markus Ackermann | 146 | 610 | 71071 |
| Hans-Olov Adami | 145 | 908 | 83473 |
| Markku Kulmala | 142 | 1487 | 85179 |
| Kjell Fuxe | 142 | 1479 | 89846 |