119,910 research outputs found

    Vàzquez Consuegra

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    monografia sull'architetto Vasquez Consuegra; saggio di critica architettonica, schede critiche di presentazione dei progetti e bibliografia. Il volume è stato presentato alla Casa dell'architettura in occasione di una conferenza tenuta a Roma dall'architetto andaluso, con interventi di F. Moschini, L. Montuori e G. Salimeimonograph on the architect Vasquez Consuegr

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

    Contracaecum gibsoni n. sp. and C. overstreeti n. sp. (Nematoda: Anisakidae) from the Dalmatian pelican Pelicanus crispus (L.) in Greek waters: morphological and genetic evidence

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    Two new species of Contracaecum Railliet & Henry, 1912, previously referred to as C. multipapillatum sp. A and C. multipapillatum sp. B by Nascetti et al. (1990) from the Dalmatian pelican Pelecanus crispus (L.) in the Ambracian Gulf off Greece, are described as C. gibsoni n. sp. and C. overstreeti n. sp., respectively. Morphological analysis and the differential diagnosis of genetically recognised male specimens of C. gibsoni and C. overstreeti with respect to C. multipapillatum (von Drasche, 1882) (sensu lato) from Egretta alba (L.) in northern Colombia and other morphologically related Contracaecum spp. enabled the detection of differences between the two species in a number of characters, including spicule length and the shape of its tip, and the arrangement of the proximal and distal papillae on the male tail. Accordingly, formal descriptions are presented for C. gibsoni n. sp. and C. overstreeti n. sp. from P. crispus. The genetic characterisation of the two taxa is based on 20 allozyme loci and sequence analyses (519 bp) of the mtDNA cox2 gene. Reproductive isolation was demonstrated between these two taxa, which sympatrically infect the same definitive host, and fixed allele differences between the two species were found at some (Aat-2, PepC-1, PepC-2 and Pgm-1) of the 20 allozyme loci analysed. Their genetic divergence, estimated at the allozyme level, was D (Nei) = 0.31. The genetic relationships of C. gibsoni and C. overstreeti with respect to C. multipapillatum (s. l.) collected from E. alba in Colombia, as well as with other congeners from fish-eating birds which had previously been genetically characterised using the same genetic markers, i.e. C. rudolphii A and C. rudolphii B of Bullini et al. (1986), C. septentrionale Kreis, 1955, C. microcephalum (Rudolphi, 1809), C. bioccai Mattiucci et al., 2008, C. pelagicum Johnston & Mawson, 1942 and C. micropapillatum (Stossich, 1890), were inferred from mtDNA cox2 sequence analysis. The MP, NJ and BI trees obtained were congruent in depicting C. gibsoni and C. overstreeti as closely related species but quite distinct from each other and forming a subclade with specimens of C. multipapilllatum (s. l.) from E. alba (L.) in Colombia. This subclade was also found to be distinct from the remainder of the taxa considered

    Square Dancing with the Stars to Enhance Dynamic Hirschman Linkages?

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    In this Presidential Address, the author takes the reader on a reconnaissance of his life and time as a regional scientist. He points out scenery he found scintillating along the way, hoping that some may pick up the banner and chew on a few of the ideas for a while. He suggests a revisit to Albert O. Hirschman’s notion of key sectors and more empirical analysis related to Marcus Berliant’s and Masahisa Fujita’s notion of knowledge creation and transfer.Presidential Address, San Antonio, Texas, March 29, 2014 (53rd Meetings of the Southern Regional Science Association

    Appropriate Similarity Measures for Author Cocitation Analysis

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    We 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

    Epidemiology, pharmacology and clinical characterization of bisphosphonate-related osteonecrosis of the jaw. A retrospective study of 70 cases.

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    BACKGROUND AND OBJECTIVES: Bisphosphonates are widely prescribed drugs whose principal capacity is inhibiting the osteoclast function. In 2003 a complication related to their administration, bisphosphonate-related osteonecrosis of the jaw (BRONJ), was described. The objectives of this study were to identify diagnosed cases of BRONJ in a third-level hospital over 8years, evaluating the main features in relation to the disease, the bisphosphonate and the presence of local or general risk factors that could trigger the BRONJ. MATERIAL AND METHOD: Patients diagnosed with BRONJ in a centre of reference for a population of 1,100,000 inhabitants were selected. Variables analysed were classified into 3 groups: patients, bisphosphonate (focusing on dose and weighting dose/potency) and osteonecrosis. RESULTS: Seventy cases were studied -44 women and 26 men-, with a mean age of 66.8years. Eighteen patients received bisphosphonates orally and 52, intravenously. The mean time of administration was 26.53months. In 67.1% of the patients it was possible to identify a local trigger, with the most common being tooth extraction (48.6%). Bone exposure was present in 89.2% of the cases, while 12 patients developed BRONJ without exposed bone, with only pain and/or chronic sinus tracts. Complete resolution was achieved in 58.6% of the patients, with a mean time of control of 16.28months. CONCLUSIONS: 25% of the BRONJ cases were related to the administration of oral bisphosphonates, especially alendronate. Zoledronic acid was the bisphosphonate that required the fewest milligrams to induce osteonecrosis. Single bone exposure was the most common clinical finding, especially in the molar mandibular region in patients with metastatic disease

    Letter from unknown writer to Jesse L. Boyce

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    Letter to Jesse L. Boyce from unknown author (possibly Jack) about the investigation into the powder magazine located in the Grand Canyon. Some personal news is included in the letter such as the writer's marriage to the daughter of C.A. Taylor, former Supervisor of Cochise County
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