133,185 research outputs found
A quality index for decision tree pruning
No full text@article{RI-CREMILLEUX-2002, author = {Fournier, D. and Crémilleux, B.}, title = {A Quality Index for Decision Tree Pruning}, journal = {Knowledge-Based Systems}, volume = {15}, pages = {37-43}, year = {2002} }International audienc
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
Fournier gangrene: role of imaging
No full textFournier gangrene is a rapidly progressing necrotizing fasciitis involving the perineal, perianal, or genital regions and constitutes a true surgical emergency with a potentially high mortality rate. Although the diagnosis of Fournier gangrene is often made clinically, emergency computed tomography (CT) can lead to early diagnosis with accurate assessment of disease extent. CT not only helps evaluate the perineal structures that can become involved by Fournier gangrene, but also helps assess the retroperitoneum, to which the disease can spread. Findings at CT include asymmetric fascial thickening, subcutaneous emphysema, fluid collections, and abscess formation. Subcutaneous emphysema is the hallmark of Fournier gangrene but is not seen in all cases. Compared with radiography and ultrasonography, CT provides a higher specificity for the diagnosis of Fournier gangrene and superior evaluation of disease extent; however, diagnosis and evaluation can also be performed with these other modalities. The administration of broad-spectrum antibiotics and aggressive surgical debridement of the nonviable tissue are both essential for successful treatment. An awareness of the CT features of Fournier gangrene is imperative for prompt diagnosis and effective treatment planning
Einführung in das Studium der Geschichte, von Dr. Wilhelm Bauer. Tübingen, J.-C.-B Mohr (P. Sicbeck), 1921.
No full textFournier Pierre-François. Einführung in das Studium der Geschichte, von Dr. Wilhelm Bauer. Tübingen, J.-C.-B Mohr (P. Sicbeck), 1921.. In: Bibliothèque de l'école des chartes. 1923, tome 84. pp. 355-356
Force transmission in migrating cells
No full textDuring cell migration, forces generated by the actin cytoskeleton are transmitted through adhesion complexes to the substrate. To investigate the mechanism of force generation and transmission, we analyzed the relationship between actin network velocity and traction forces at the substrate in a model system of persistently migrating fish epidermal keratocytes. Front and lateral sides of the cell exhibited much stronger coupling between actin motion and traction forces than the trailing cell body. Further analysis of the traction - velocity relationship suggested that the force transmission mechanisms were different in different cell regions: at the front, traction was generated by a gripping of the actin network to the substrate, whereas at the sides and back, it was produced by the network's slipping over the substrate. Treatment with inhibitors of the actin - myosin system demonstrated that the cell body translocation could be powered by either of the two different processes, actomyosin contraction or actin assembly, with the former associated with significantly larger traction forces than the latter. © 2010 Fournier et al.LC
Gender differences in youths’ political engagement and participation. The role of parents and of adolescents’ social and civic participation
No full textResearch examining youths’ political development mostly focused on young people as a general group; comparatively less attention has been devoted to the examination of gender pathways toward citizenship. Two studies were conducted addressing (a) the role of parents’ participation and the moderating role of adolescent gender and age group (n = 1419) and (b) the role of adolescent social and civic participation and the moderating role of adolescent gender and type of school (n = 1871). Results confirmed the gender gap in political interest and in the use of the Internet for political participation, while no differences emerged for political activity and voting intentions. Adolescents’ political engagement and participation are influenced by parents’ participation (especially among girls) and by adolescents’ social and civic participation (especially among boys). The impact of adolescents’ social and civic participation on conventional participation (voting intentions) is partially mediated by sense of community and institutional trust
Gangrena de Fournier numa Mulher
No full textA fasceíte necrotizante dos tecidos infra-diafragmáticos (gangrena de Fournier) é uma
grave infecção sinergística por agentes aeróbicos/anaeróbicos, com uma evolução
clínica súbita e rápida de gangrena da fascia e sepsis generalizada, associada a elevada mortalidade. Trata-se de uma emergência médico-cirúrgica necessitando de tratamento intensivo englobando a correcção das anomalias hemodinâmicas, hidroelectrolí-
ticas e metabólicas, antibioterapia dupla/tripla de largo espectro por via endovenosa, desbridamento cirúrgico agressivo do tecido necrótico infectado e correcção da determinante etiológica da gangrena. É frequente encontrar como factores de risco a diabetes mellitus, doença crónica hepática, doenças malignas, doenças imunológicas congénitas ou adquiridas, tratamento com fármacos imuno-supressores, alcoolismo crónico e má nutrição. As fontes infecciosas originais conducentes a uma gangrena de Fournier são geralmente abcessos da área peri-anal ou processos infecciosos genitourológicos. Embora a gangrena de Fournier seja muito menos frequente na mulher que no homem, é importante pensar nesse diagnóstico, de forma a proporcionar às doentes a possibilidade de tratamento com sucesso. Descreve-se o caso de uma gangrena de
Fournier, determinada porumabscesso da fossa ísquio-rectal, numa mulher diabética e
em tratamento de um penfigus vulgaris com fármacos imuno-supressores, com evolução fatal, possivelmente em resultado de diagnóstico e tratamento tardios
Pragmatic Case Studies as a Source of Unity in Applied Psychology
No full textTo unify or not to unify applied psychology: that is the question. In this article we review pendulum swings in the historical efforts to answer this question—from a comprehensive, positivist, “top-down,” deductive yes between the 1930s and the early 60s, to a postmodern no since then. A rationale and proposal for a limited, “bottom-up,” inductive yes in applied psychology is then presented, employing a case-based paradigm that integrates both positivist and postmodern themes and components. This paradigm is labeled “pragmatic psychology” and, its specific use of case studies, the “Pragmatic Case Study Method” (“PCS Method”). We call for the creation of peer-reviewed journal-databases of pragmatic case studies as a foundational source of unifying applied knowledge in our discipline. As one example, the potential of the PCS Method for unifying different angles of theoretical regard is illustrated in an area of applied psychology, psychotherapy, via the case of Mrs. B. The article then turns to the broader historical and epistemological arguments for the unifying nature of the PCS Method in both applied and basic psychology.Peer reviewe
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