212,145 research outputs found
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
Australobius anamagnus Ma, Song & Zhu 2008
No full textAustralobius anamagnus Ma, Song & Zhu, 2008 Australobius anamagnus Ma, Song & Zhu, 2008 b: 172, Figs 1–7 Previous records. Tibet Autonomous Region (Shannan City) (Ma, Song & Zhu, 2008 b). Remarks. Only known from China.Published as part of Ma, Huiqin, Pei, Sujian, Hou, Xiaojie, Zhu, Tiegang, Wu, Dayong & Gai, Yonghua, 2014, An annotated checklist of Lithobiomorpha of China, pp. 333-358 in Zootaxa 3847 (3) on page 350, DOI: 10.11646/zootaxa.3847.3.2, http://zenodo.org/record/23128
Using performance assessment in secondary school mathematics: an empirical study in a Singapore classroom
No full textThis article reports an exploratory study on using performance assessment in mathematics instruction in a high-performing secondary school in Singapore. An intact mathematics class participated in the study, and received chapter-based performance tasks as intervention during regular mathematics lessons for about one and a half school years. The performance tasks used included authentic and/or open-ended tasks. The students’ academic achievements and attitudes in mathematics were compared with a comparison class that did not receive the intervention. Both quantitative and qualitative data were collected, mainly through questionnaire surveys, performance task tests, conventional school exams, and interviews with students and teachers. The results suggest that the students receiving the intervention performed significantly better than their counterparts in solving conventional exam problems, and in general they also showed more positive changes in attitudes towards mathematics and mathematics learning. The students from the experimental class also expressed positive views about the benefits of using performance tasks in promoting their ability in higher order thinking, though no statistically significant difference was detected between the two classes of students in solving unconventional tasks before and after intervention. Overall, the results appear to support teachers’ using contextualised problems in real life situations and open-ended investigations in students’ learning of mathematic
Validifemur xinyang Ma, Song and Zhu 2007
No full text<i>Validifemur xinyang</i> Ma, Song and Zhu, 2007 <p> <i>Validifemur xinyang</i> Ma, Song and Zhu, 2007c: 65, figs 1–4</p> <p> <b>Previous records.</b> Henan Province (XinYang City) (Ma <i>et al</i>, 2007c).</p> <p> <b>Remarks.</b> Only known from China. Ma, Song & Zhu’s original description of this species was based on a single male specimen from Henan Province.</p>Published as part of <i>Ma, Huiqin, Pei, Sujian, Hou, Xiaojie, Zhu, Tiegang, Wu, Dayong & Gai, Yonghua, 2014, An annotated checklist of Lithobiomorpha of China, pp. 333-358 in Zootaxa 3847 (3)</i> on page 352, DOI: 10.11646/zootaxa.3847.3.2, <a href="http://zenodo.org/record/231285">http://zenodo.org/record/231285</a>
Bothropolys stoevi Ma, Song and Zhu 2008
No full text<i>Bothropolys stoevi</i> Ma, Song and Zhu, 2008 <p> <i>Bothropolys stoevi</i> Ma, Song and Zhu, 2008d: 249, figs 1 a <b>–</b> h</p> <p> <b>Previous records.</b> Hebei Province (Zhangjiakou City) Shanxi Province (Xinzhou City) (Ma <i>et al</i>., 2008d). <b>Remarks.</b> Only known from China.</p>Published as part of <i>Ma, Huiqin, Pei, Sujian, Hou, Xiaojie, Zhu, Tiegang, Wu, Dayong & Gai, Yonghua, 2014, An annotated checklist of Lithobiomorpha of China, pp. 333-358 in Zootaxa 3847 (3)</i> on page 354, DOI: 10.11646/zootaxa.3847.3.2, <a href="http://zenodo.org/record/231285">http://zenodo.org/record/231285</a>
Datasets for BAYOMA with EM
No full textThis folder contains the synthetic and laboratory datasets used in the paper: Zhu W, Li B. EM-aided fast posterior covariance computation in Bayesian FFT method [J]. Mechanical Systems and Signal Processing, 2024, 211: 111211
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