1,721,002 research outputs found
Object Detection on Depth Map with YOLO
No full textA neural network, based on the ‘You Only Look Once’ (YOLO) network, has been trained to detect objects, using conventional RGB images. Taking advantage of the pixel relationship between the RGB image and the depth map, the positions of the detected objects will be projected onto a depth map. After some statistic analysis, the pixels pertaining to one object will be extracted. Finally, the 3D position of the object in the surroundings will be calculated
Two new species of Chelifera Macquart from China (Diptera: Empididae)
No full textWang, Xiwei, Yan, Shanchun, Yang, Ding (2014): Two new species of Chelifera Macquart from China (Diptera: Empididae). Zootaxa 3795 (2): 187-192, DOI: 10.11646/zootaxa.3795.2.
FIGURES 4–6 in Two new species of Chelifera Macquart from China (Diptera: Empididae)
No full textFIGURES 4–6. Chelifera tibetensis sp. nov. (male). 4. Genitalia, lateral view; 5. cerci, dorsal view; 6. hypandrium and phallus, lateral view. Scale bar = 0.2 mm.Published as part of Wang, Xiwei, Yan, Shanchun & Yang, Ding, 2014, Two new species of Chelifera Macquart from China (Diptera: Empididae), pp. 187-192 in Zootaxa 3795 (2) on page 190, DOI: 10.11646/zootaxa.3795.2.8, http://zenodo.org/record/22565
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
Chelifera
No full textKey to species (primarily males) of Chelifera from China (modified from Yang et al. 2005) 1 Thoracic dorsum entirely or mostly black, or brownish yellow with 2 black longitudinal stripes on mesonotum; pterostigma present except C. sheni................................................................................ 2 - Thorax uniformly yellowish to dark brownish; pterostigma absent.............................................. 6 2 Mesonotum entirely or mostly black; pterostigma present; male cercus not as below................................. 3 - Mesonotum brownish yellow with 2 black longitudinal stripes; pterostigma absent; male cercus much narrower than epan- drium in lateral view (Yang & Yang 2004, fig. 80)....................................... C. sheni Saigusa & Yang 3 Pterostigma short and wide; thorax black, or thorax yellow except dorsum mainly black............................. 4 - Pterostigma long and narrow; thorax black except pleura brownish yellow [male unknown]...... C. lateralis Yang & Yang 4 Thorax black except postalar calli dark yellow; male cercus not furcated, or apically furcated with short acute ventral process................................................................................................... 5 - Thorax mainly yellow except dorsum mainly black; male cercus apically furcated with short acute dorsal process (Fig. 1)........................................................................................... C. liuae sp. nov. 5 Fore tarsomere 5 and mid and hind tarsomeres 4–5 blackish to black; male cercus not furcate apically (Yang & Yang 2004, fig. 83)............................................................................. C. sinensis Yang & Yang - All tarsi from tip of tarsomere 3 brown to dark brown onward; male cercus furcate apically with short acute ventral process (Yang & Yang 2004, fig. 77)........................................................ C. incisa Saigusa & Yang 6. Only foreleg raptorial; male cercus not as below............................................................ 7 - Male fore and mid legs raptorial and modified; male cercus nearly straight, with many inner denticles along middle portion (Horvat 2002, figs 8–9)............................................................... C. ornamenta Horvat 7 Thorax brownish yellow or dark brownish; male cercus not furcated apically (Fig. 4)............................... 8 - Thorax yellowish; male cercus furcate apically (Horvat 2002, fig. 1)........................... C. emeishanica Horvat 8 Thorax brownish yellow; male cercus narrowed apically (in dorsal view) and with 4–5 inner denticles on median lobe; epan- drium shorter than cercus, apically not long finger-like (in lateral view) (Yang et al. 2005, fig. 1).......................................................................................... C. nanlingensis Yang, Grootaert & Horvat - Thorax dark brownish; male cercus wide apically (in dorsal view) and with only 2 inner denticles on subapical lobe (Fig. 5); epandrium distinctly longer than cercus, apically long finger-like (in dorsal view) (Fig. 4)............ C. tibetensis sp. nov.Published as part of Wang, Xiwei, Yan, Shanchun & Yang, Ding, 2014, Two new species of Chelifera Macquart from China (Diptera: Empididae), pp. 187-192 in Zootaxa 3795 (2) on pages 187-188, DOI: 10.11646/zootaxa.3795.2.8, http://zenodo.org/record/22565
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