125,225 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
Plasmacytoid dendritic cells : an overview of their presence and distribution in different inflammatory skin diseases, with special emphasis on Jessner’s lymphocytic infiltration of the skin and cutaneous lupus erythematosus
No full textBackground: Plasmacytoid dendritic cells (PDC) play a pivotal role in the induction of autoimmune diseases and other skin diseases. The present study focuses on the distribution patterns of PDC in patients with cutaneous lupus erythematosus (LE) and Jessner's lymphocytic infiltrate (LI) of the skin and compares them with other skin diseases. The goal was to scrutinize the involvement of PDC in LI, and to show that PDC present a specific pattern of distribution in various cutaneous disorders. Methods: 353 skin biopsies of LE (various subtypes), LI, and other inflammatory skin diseases as well as two halo melanocytic nevi and 10 epithelial tumors were immunohistochemically investigated for the presence of PDC by employing antibodies against CD123 and CD2AP. Results: PDC were constantly detected as distinct perivascular and periadnexal clusters in LE and LI. In other forms of dermatitis, PDC could be found as single cells or scattered throughout the infiltrate or beneath the epidermis. Conclusions: Our data suggest that the distribution of PDC in tumid LE and LI is identical, and this observation suggests that both designations signify one disease. The distinct PDC arrangement in LE represents as useful diagnostic tool in the differential diagnosis with other forms of dermatitis. Tomasini D, Mentzel T, Hantschke M, Cerri A, Paredes B, Rütten A, Schärer L, Kutzner H. Plasmacytoid dendritic cells: an overview of their presence and distribution in different inflammatory skin diseases, with special emphasis on Jessner's lymphocytic infiltrate of the skin and cutaneous lupus erythematosus. Copyrigh
Tonkinospira tomasini Pall-Gergely & Jochum 2017
No full text<i>Tonkinospira tomasini</i> Páll-Gergely & Jochum, 2017 <p>(Fig. 1)</p> <p> <i>Tonkinospira tomasini</i> Páll-Gergely & Jochum <i>in</i> Páll- Gergely et al., 2017: 337: figs 1a, 5, 6, 7a, b. (type locality: Northern Vietnam, Ha Giang Province, Quan Ba District, Tam Son, Cong Troi Cave, 980 m, 23°02′44.7″N, 104°59′23.9″E)</p> <p> <b>Diagnosis.</b> A large <i>Tonkinospira</i> species with a conical shell, rounded body whorl, shallow sutures, weak growth lines and spiral striation, and a peristome that is adnate to penultimate whorl.</p> <p> <b>Differential diagnosis.</b> See under <i>Tonkinospira suturata</i> new species, and <i>T. triangulata</i> new species.</p>Published as part of <i>Páll-Gergely, Barna, Grego, Jozef, Vermeulen, Jaap J., Reischütz, Alexander, Hunyadi, András & Jochum, Adrienne, 2019, New Tonkinospira Jochum, Slapnik & Páll-Gergely, 2014 species from Laos and Vietnam (Gastropoda: Pulmonata: Hypselostomatidae), pp. 517-535 in Raffles Bulletin of Zoology 67</i> on page 533, DOI: 10.26107/RBZ-2019-0041, <a href="http://zenodo.org/record/4576444">http://zenodo.org/record/4576444</a>
La autonomía universitaria
No full textFil: Tomasini, Mabel B. Universidad de Buenos Aires. Facultad de Derecho. Buenos Aires, ArgentinaI. - Introducción. II.-La autonomía universitaria como aspiración o ideal. III. -Sentido jurídico de la expresión Autonomía universitaria. 1 -Autonomía y autarquía. 2.-Régimen legal de la Universidad. 3.-Autonomía o autarquía universitaria a través de nuestra dinámica legislativa. IV. -La autonomía universitaria como producto de una delegación legislativa. l. - Delegación legislativa. 2.- Constitucionalidad o inconstitucionalidad de la delegación legislativa en materia universitaria. V. -Contralor administrativo sobre la Universidad. VI. -Designación de profesore
O que motiva as jovens a participar: Ativismo de gênero e devires identitários em estudantes do ensino médio de Córdoba, Argentina
No full textEste artículo aborda la participación de jóvenes, estudiantes de escuelas secundarias de Córdoba, Argentina, en movilizaciones convocadas por colectivos feministas. Se analizan los motivos que las llevan a concurrir a las marchas, los temas que les preocupan y las demandas que plantean. El interés teórico gira en torno a sus devenires identitarios, a partir de instancias de participación donde luchan por producir transformaciones en las relaciones sexo-genéricas. La identidad como un devenir implica pensarla como incompleta, en proceso y abierta a la posibilidad de transformación.Se realizaron 28 entrevistas breves grabadas a jóvenes durante las marchas (años 2017 y 2018) y se hicieron siete entrevistas grupales en profundidad con estudiantes que participaron en las movilizaciones. Algunos ejes de indagación fueron: conocimiento y posicionamiento acerca de las consignas propuestas por el colectivo organizador; motivos para ir a la movilización, aspectos organizativos y vivencias afectivas durante la marcha; temas y situaciones vinculadas con género y sexualidad que les preocupan en sus realidades cotidianas.En el escrito se desarrollan algunos ejes analíticos tales como: (a) los motivos para ir a las marchas; aquí emerge un abanico amplio de situaciones que interpretan como desigualdades, discriminaciones, injusticias y violencias, que advienen al relato entrelazadas con sensaciones de malestar, enojo o dolor, por cuya transformación luchan (b) los marcadores sociales predominantes desde los cuales construyen su identidad en los relatos: género, generación y posicionamiento feminista. Finalmente se discute el devenir identitario desde tres procesos interrelacionados: agencia, intersubjetividad y conciencia.This paper addresses participation in feminist mobilizations of youngsters that attend secondary education in Córdoba, Argentina. It aims at comprehending their concurrence to public manifestations, issues of concern and demands. The theoretical interest spins around her identity becoming from their participation in actions oriented to the transformation of sex and gender relationships. Considering identity as a matter of becoming implies that it is incomplete, in process and open to transformation. For this purpose, we carried out twentyeight brief recorded interviews with youngsters during the public manifestations (in 2017 and 2018) and seven group interviews with students who participated in mobilizations. Some inquiry axes were: knowledge and positioning about the slogans proposed by the organizing collective; reasons to mobilize; organization and affective experiences during the manifestation; issues and situations regarding gender and sexuality to which they are concerned in their everyday realities. Two analytical topics are developed in the paper: (a) reasons for attending manifestations; this implies a variety of situations interpreted as inequalities, discriminations, injustices and violence, that come into to the narrative interlaced with feelings of discomfort, anger and pain they fight to transform. (b) The predominant markers through which they construct their identity throughout the narratives: gender, generation and feminist positioning. Finally, we discuss the identity becoming considering three interrelated processes: agency, intersubjectivity and conscience.Fil: Tomasini, Marina Edith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Humanidades. Universidad Nacional de Córdoba. Instituto de Humanidades; Argentin
Biodiversity of nematofauna of oilseed rape (Brassica napus L.)
No full textFew data is available on the nematodes found in Brassicaceae, except for the most important plant parasite. However, studying the structure of nematofauna could be an important database for the soil quality and in order to assess the effects of future disturbance. This is particularly important considering that the diffusion of the canola crop in the world is increasing because of its use as a bio-diesel. Very diffused is also the Bt variety of oil seed rape, and, in this case, the study of the impact on the soil health and on bio-diversity is essential. In this research we have analyzed the nematode community, used as a bio-indicator of the soil condition. The nematofauna found in canola (Brassica napus var. oleifera) fields located in Southern Italy (Metaponto - MT) was investigated. The nematode community was studied considering its abundance, genus composition and trophic structure. Maturity and biodiversity indices were also calculated. A total of 5286 nematodes were extracted. They belong to 14 families and 24 genera. Bacterial and fungal feeders, 50.18% and 42.90% of the total respectively, dominated the trophic structure. Aphelencus is the most abundant genus (23.71%) followed by Acrobeloides (20.49%) and Aphelencoides (19.18%). Among plant feeders (6.59%), Pratylenchus is the dominant genus (2.20%) and Tylenchidae the main family (3.54%). No infestation of Meloidogyne, Heterodera or Naboccus, important plant-parasitic nematodes of canola crops, was recorded. Other important phytophagous were Helycotylenchus (0.5%), Trichotylenchus (0.5%) and Filenchus (0.9%). All of them had an abundance level below injury level. The indices of biodiversity are rather low (H'=0.93, J'=0.67), as is typical for agro ecosystems. However, the nematofauna community is quite well structured (N2=6.31, D=0.16) and the maturity index rather high (EMI=1.94). These values demonstrate that oilseed rape has a lower impact on the soil compared to other crop systems and that it could be taken into consideration for crop rotation programs. Canola could follow other more stressful crops, trying to maintain soil equilibrium
Application of Micro Scanning Laser Doppler Vibrometer for dynamic characterization and Quality factor assessment in Micro Electro Mechanical Devices (MEMS)
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