1,721,539 research outputs found
CIL:13739
No full textBoi (green) localizes predominantly to apical cells in Drosophila wild-type germaria but not in boi[e] mutant germaria (CIL#13740). Germ cells are identified using anti-Vasa (blue). Image is Fig 2B in J Cell Biol. 2010. 191: 943-952. Other images in Fig 2 include CIL# 13738, 13739, 13740, 13741, 13742)
North-South Trade and Growth: The Role of Product Quality.
Get PDFThe traditional trade models, which rely on a comparative advantage based on regions’ technology or endowments, or the new trade theory, designed to explain trade between the countries at a similar level of development, fail to replicate recent evidence on world trade patterns and prices. This evidence reveals North-South specialization across products of the same industries and product groups but different quality, rather than across different industries. Furthermore, countries at a higher level of technological development have higher export prices, which shows that more advanced technology does not necessarily imply higher cost efficiency. Therefore, in order to analyze the endogenous growth mechanisms and implications of the IPR protection policy in a North-South trade set-up, this thesis develops a fully-endogenous theoretical framework based on the notion of quality vintages, which results in the North-South production and trade specialization in different quality segments of the market. The model is used to investigate the growth effects of the South opening to trade and the welfare effects of different IPR policy instruments. Finally, the last chapter abstracts from endogenous growth mechanismsQuality of products; International trade;
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
Border spreading limiter of fertiliser spreader testing in accordance with SIST EN 13739 standard
Get PDFV diplomskem delu smo se posvetili problematiki gnojenja robov parcel. V skladu s standardom SIST EN 13739 smo testirali centrifugalni razsipalnik INO FERTI II, opremljenim z robnim omejevalcem gnojenja. Preizkušali smo različne nastavitve in opazovali gnojilne slike ter odstopanja leteh od določitev standarda. Preizkusili smo 9 različnih nastavitevnastavitve omejevalca robnega gnojenja pri dveh različnih delovnih širinah. Rezultati so pokazali, da pri nastavljeni delovni širini 18 m in nastavitvah omejevalca na pozicijo 0, 1, 2 in 3 niso primerne za robno gnojenje, saj je maksimalna količina trošenja gnojila na asimetrični strani prevelika ter izguba gnojila na robu gnojenja prevelika, hkrati se tudi delovna širina zmanjša. Nastavitve 4 in 4.5 so primernejše za gnojenje roba parcel, vendar še ne idealne. Pri nastavljeni delovni širini 15 m je učinek omejevalca robnega gnojenja še oslabljen, obenem se delovna širina še dodatno zmanjša.In our thesis we have focused on issues in fertilising borders of plots. In accordance to SIST EN 13739 standard we have tested centrifugal spreader INO FERTI II, which is equipped with border spreader limiter. Different settings have been tested and spreading displays have been observed as well as deviations from the standard requirement. We have tested 9 different settings and the setting of the border spreading limiter in two different working widths. The results have shown that with the working width at 18 meters and with the limiter being set to positions 0, 1, 2 and 3 they are not suitable for border spreading since the maximum quantity of fertiliser usage is too high on the asymmetric side and also that the loss of fertiliser on the border is too high. Working width is reduced as well. Settings 4 and 4.5 are more suitable for fertilising a border of plot although not ideal. With working width being set to 15 meters the effect of the border spreader limiter is reduced and working width is additionally decreased
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