84,783 research outputs found
Register / bearbeitet von Holger Hansen
No full textREGISTER / BEARBEITET VON HOLGER HANSEN
Bibliotheca Germanorum erotica & curiosa (-)
Register / bearbeitet von Holger Hansen (Register) ([1])
Cover ( - )
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Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Cleone Hansen, Utah Uranium Oral History Project
No full textTranscript (35 pages) of an interview by Dorothy Erick with Cleone Hansen, on August 12, 1970. From tape number 120 in the Uranium History ProjectHansen spoke with Dorothy Erick in Monticello, Utah. Subjects: winter work at the Happy Jack, psychological effects of prospecting and mining, pioneer family, the ferry, medicine and supplies in Monticello, the boom, selling the mine, family optimism, sellers and buyers, mine safety, transportation (35 pages)
Evaluating Asset-Pricing Models Using The Hansen-Jagannathan Bound: A Monte Carlo Investigation
No full textWe conduct Monte Carlo experiments to examine whether the bound proposed by Hansen and Jagannathan (1991) is a useful device for evaluating asset pricing models. Specifically, we use recently developed statistical tests, which are based on a 'distance' between the model and the Hansen-Jagannathan bound, to compute the rejection rates of true models. We provide finite-sample critical values for asset pricing models with time separable preferences, and show how they depend upon nuisance parameters—risk aversion and the rate of time preference. Further, we show that the finite-sample distribution of the test statistic associated with the risk-neutral case is extreme, in the sense that critical values based on this distribution will deliver type I errors no larger than intended—regardless of risk aversion or the rate of time preference. Extending the analysis to accommodate other preferences, we show that in the state non-separable case, the small-sample distributions of the test statistics are influenced significantly by the degree of intertemporal substitution, but not by attitudes toward risk. For habit formation preferences, the small-sample distributions are strongly influenced by the habit parameter. However, the maximal-size critical values for time-separable preferences are appropriate for habit formation as well as state non-separable preferences. We conclude that with these critical values the HJ bound is indeed a useful evaluation device. We then use the critical values to evaluate three asset pricing models using U.S. data. We find evidence against the time-separable model and mixed evidence on the remaining two models.
Comparison Results From 'A Global Comparison Of Integrated Water Vapour Estimates From Wmo Radiosondes, Aeronet Sun Photometers And Gps For The 17 Year Period From 1997 To 2013' By Wilson, Hansen, Bingley And Milton
No full textThis dataset contains the raw comparison results from the paper A global comparison of integrated water vapour estimates from WMO radiosondes, AERONET sun photometers and GPS for the 17 year period from 1997 to 2013 by Wilson, Hansen, Bingley and Milton.
The three files contain comparisons between:
a) AERONET and Radiosonde (Validation_AERONET-Radiosonde.csv)
b) AERONET and GPS (Validation_AERONET.csv)
c) Radiosonde and GPS (Validation_Radiosonde.csv)</span
Measurement of the ratio of branching fractions B(B0→K∗0γ )/B(B0s→φγ ) and the directCP asymmetry inB 0→K∗0γ
No full textThe ratio of branching fractions of the radiative B decays B0→K⁎0γ and B0s→ϕγ has been measured using an integrated luminosity of 1.0 fb−1 of pp collision data collected by the LHCb experiment at a centre-of-mass energy of s√=7TeV. The value obtained is
B(B0→K⁎0γ)B(B0s→ϕγ)=1.23±0.06(stat.)±0.04(syst.)±0.10(fs/fd),
where the first uncertainty is statistical, the second is the experimental systematic uncertainty and the third is associated with the ratio of fragmentation fractions fs/fd. Using the world average value for B(B0→K⁎0γ), the branching fraction B(B0s→ϕγ) is measured to be (3.5±0.4)×10−5.
The direct CP asymmetry in B0→K⁎0γ decays has also been measured with the same data and found to be
ACP(B0→K⁎0γ)=(0.8±1.7(stat.)±0.9(syst.))%.
Both measurements are the most precise to date and are in agreement with the previous experimental results and theoretical expectations
Lophogaster intermedius Hansen 1910
No full text<i>Lophogaster intermedius</i> Hansen, 1910 <p> <b>Junior synonym.</b> <i>Lophogaster hawaiensis</i> Fage, 1940.</p> <p> <b>Records from</b> <b>Indonesia.</b> Halmahera Sea, Seram Sea and northern entrance of Buton Strait (south Sulawesi). Depth range: 75–141 m (Hansen 1910).</p> <p> <b>Remarks.</b> <i>Lophogaster intermedius</i> is very similar to <i>L</i>. <i>inermis</i>, but the apex of the antennal scale of the former species features a short, sharp spine with 4 to 6 small, serrate spines on the distal part of the outer margin. The lateral margin of the telson has one pair of spines, and the posterior tip two pairs of spines; the apical plate bears 2 to 4 short spinules and 2 long bristles (Hansen 1910; Casanova 1997).</p>Published as part of <i>Yolanda, Rofiza, Lheknim, Vachira, Price, W. Wayne & Hendrickx, Michel E., 2023, The lophogastrids (Crustacea: Peracarida: Lophogastrida) of Indonesia and its adjacent waters. An updated checklist, pp. 413-429 in Zootaxa 5330 (3)</i> on page 418, DOI: 10.11646/zootaxa.5330.3.5, <a href="http://zenodo.org/record/8254853">http://zenodo.org/record/8254853</a>
Afrotormus metallescens Hansen 1999
No full text<i>Afrotormus metallescens</i> Hansen, 1999 <p>(Figs 18 D–E, 18J, 19B)</p> <p> <i>Afrotormus metallescens</i> Hansen, 1999a: 147. Type locality. Republic of South Africa, Western Cape Province, Heuningnes River, 34.42°S 20.02°E.</p> <p> <b>Type material examined.</b> HOLOTYPE: ♂ (TMSA): ‘ S. Afr., S. W. Cape / Heuningnes Riv. / 34.42 S – 20.02 E // 28.10.1983; E-Y: 2030 / from under stones / leg. Endrödy-Younga // HOLOTYPE / Afrotormus metallescens / M. Hansen’. PARATYPE: ♀ (ZMUC): same locality data, but with type label ‘ PARATYPE / Afrotormus / metallescens / M. Hansen’.</p> <p> <b>Additional material examined.</b> None.</p> <p> <b>Diagnosis.</b> Dorsal coloration brown to dark brown, with bronze metallic reflections; sides of pronotum and elytra and whole ventral portion and appendages reddish. Head and pronotum with rather distinct punctuation consisting of simple punctures; elytral punctures slightly smaller but still distinct. Male labial palpi modified, widened, palpomere 3 with large transparent disc; female labial palpi simple. Mesoventrite divided from anepisterna by distinct anapleural suture; mesoventral plate ca. 1.6× longer than wide, with weakly convex lateral margins. Hind wings not developed.Aedeagus with phallobase slightly shorter than parameres, parameres subangulate in apical fourth of outer margin, apex narrowed into a hook-like apex. Male sternite 9 wide basally, projecting as a narrow median projection mesally.</p> <p> <b>Distribution.</b> Republic of South Africa: Western Cape. Known only from the type locality.</p>Published as part of <i>Fikáček, Martin, Minoshima, Yûsuke, Vondráček, Dominik, Gunter, Nicole & Leschen, Richard A. B., 2013, Morphology of adults and larvae and integrative taxonomy of southern hemisphere genera Tormus and Afrotormus (Coleoptera: Hydrophilidae), pp. 75-126 in Acta Entomologica Musei Nationalis Pragae 53 (1)</i> on pages 118-119, DOI: <a href="http://zenodo.org/record/4503766">10.5281/zenodo.4503766</a>
Paralophogaster glaber Hansen 1910
No full text<i>Paralophogaster glaber</i> Hansen, 1910 <p> <b>Records from Indonesia.</b> Seram Sea, Taam Island, between Kei Kecil and Kei Besar Islands, Arafura Sea, and eastern part of Jamdena Island (Arafura Sea). Depth range: 118–314 m (Hansen 1910; Casanova 1996).</p> <p> <b>Remarks.</b> This species is included in the Glaber-group, in which the large lateral spines on the telson are very long and overreach the apical spines. <i>Paralophogaster glaber</i> can be recognized by its antennal sympod armed with a strong, stout spine. The lateral margin of the telson is armed with 9–10 pairs of robust setae including two large setae, where the most anterior pair is the strongest and can reach the middle part of the distal setae. The apical plate is armed with 5 short spinules and 4 long bristles (Băcescu 1981), sometimes with 6 spinules and 5 long bristles (Hansen 1910).</p>Published as part of <i>Yolanda, Rofiza, Lheknim, Vachira, Price, W. Wayne & Hendrickx, Michel E., 2023, The lophogastrids (Crustacea: Peracarida: Lophogastrida) of Indonesia and its adjacent waters. An updated checklist, pp. 413-429 in Zootaxa 5330 (3)</i> on page 419, DOI: 10.11646/zootaxa.5330.3.5, <a href="http://zenodo.org/record/8254853">http://zenodo.org/record/8254853</a>
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