129,976 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
A novel comparison of Moller and Compton electron-beam polarimeters
No full textWe have performed a novel comparison between electron-beam polarimeters based on Moller and Compton scattering. A sequence of electron-beam polarization measurements were performed at low beam currents (< 5 mu A) during the Qweakexperiment in Hall-Cat Jefferson Lab. These low current measurements were bracketed by the regular high current ( 180 mu A) operation of the Compton polarimeter. All measurements were found to be consistent within experimental uncertainties of 1% or less, demonstrating that electron polarization does not depend significantly on the beam current. This result lends confidence to the common practice of applying Moller measurements made at low beam currents to physics experiments performed at higher beam currents. The agreement between two polarimetry techniques based on independent physical processes sets an important benchmark for future precision asymmetry measurements that require sub-1% precision in polarimetry. (C) 2017 The Authors. Published by Elsevier B.V.Physic
Demonstration of an orexinergic central innervation of the pineal gland of the pig
No full textOrexins/hypocretins, two isoforms of the same prepropeptide, are widely distributed throughout the brain and are involved in several physiological and neuroendocrine regulatory patterns, mostly related to feeding, sleep, arousal, and cyclic sleep-wake behaviors. Orexin-A and orexin-B bind with different affinities to two G-protein-coupled transmembrane receptors, orexin-1 and orexin-2 receptors (OR-R1 and OR-R2, respectively). Because of the similarities between the human and the swine brain, we have studied the pig to investigate the orexinergic system in the diencephalon, with special emphasis on the neuroanatomical projections to the epithalamic region. By using antibodies against orexin-A and orexin-B, immunoreactive large multipolar perikarya were detected in the hypothalamic periventricular and perifornical areas at the light and electron microscopic levels. In the region of the paraventricular nucleus, the orexinergic neurons extended all the way to the lateral hypothalamic area. Immunoreactive nerve fibers, often endowed with large varicosities, were found throughout the hypothalamus and the epithalamus. Some periventricular immunoreactive nerve fibers entered the epithalamic region and continued into the pineal stalk and parenchyma to disperse among the pinealocytes. Immunoelectron microscopy confirmed the presence of orexinergic nerve fibers in the pig pineal gland. After extraction of total mRNA from the hypothalamus and pineal gland, we performed RT-PCR and nested PCR using primers specific for porcine orexin receptors. PCR products were sequenced, verifying the presence of both OR-R1 and OR-R2 in the tissues investigated. These findings, supported by previous studies on rodents, suggest a hypothalamic regulation of the pineal gland via central orexinergic nervous inputs
Viridarivm Epistolicum : Das ist: Ein Lust-Garte/ Vieler/ mit anmuhtiger Wort-Zierligkeit/ und edlen Red-Arte[n]/ jetztbeliebtem Styli nach/ eingekleidten Send-Schreiben : Zusambt schönen/ bey hochzeitlichen Freuden-Fest/ Kind-Tauffen und Beerdigung hoher Stands-Personen/ gebräuchlichen Abdankungen ... ; Welchem mit angefüget ist: Procervm Mvndi Index Insignium, Ein Anzeige und Auflösung aller in- und ausländischen Potentaten ... Wapen ... / verfertiget dieses. Alhardus Moller, F. der Rechten und Weltweißheit Beflissener
No full textPhysical attractiveness and health: Comment on Weeden and Sabini (2005)
No full textEvolutionary behavioral biology suggests that certain characteristics of the human face and body are important for mate preferences and are therefore subject to sexual selection. J. Weeden and J. Sabini (2005) identify a number of weaknesses in the association between traits' attractiveness and health. In contrast, the authors argue that (a) studies on preferences for physical characteristics that rely on I trait permit only limited interpretation, (b) limitations placed on J. Weeden and J. Sabini's review exclude important associations, (c) there are misconceptions in their treatment of some traits, and (d) their selected literature provides an inaccurate picture regarding effect size. The authors suggest that future research in this field should seek conceptual and methodological constancy in trait selection and in the evaluation of attractiveness- and health-related traits
Le Spectre de Lillian Moller Gilbreth ::les images parlent
No full textSouvent considérée comme la « Little Woman » du tayloriste Frank B. Gilbreth, l’ingénieure en étude du mouvement, la docteure Lillian Moller Gilbreth a longtemps œuvré à la réussite professionnelle de son époux avant d’inviter ses concitoyennes à construire – quitte à le simuler– un regard spécifiquement féminin d’empouvoirement à partir de la maison et des tâches ménagères. Cet article construit en trois temps, revient en premier sur la fructueuse collaboration du couple avant de montrer comment à partir du décès de son mari en 1924, Moller Gilbreth s’émancipe en prenant, seule, la tête de l’entreprise Gilbreth, Inc. Enfin, en s’appropriant l’outil cinématographique, et à partir du déplacement de la femme / ménagère devenue réalisatrice / actrice, Moller Gilbreth articule de nouvelles recherches révélant par l’image en mouvement la dimension politique des gestes du travail et l’émancipation de la femme
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
Dr. Edwin Wright Collection: Author Unknown
No full textNotes - The author relates several short stories about his neighbours including Alex McDonell, homesteading and life around Meanook and Athabasca (1 page
PARTIAL GASTRECTOMY AND SUBSEQUENT GASTRIC-CANCER RISK
No full textStudy objective - The aim was to analyse the relationship between partial gastrectomy and gastric cancer risk. Design - This was a case control study, using a structured questionnaire to obtain problem orientated medical history and sociodemographic data. Setting - The study was conducted in a network of hospitals in the Greater Milan area between january 1985 and February 1990. Subjects - Subjects were 563 incident cases of histologically confirmed gastric carcinoma (347 males, 216 females, median age 60 years, range 28 to 74) and 1501 controls (885 males, 626 females, median age 58 years, range 23 to 74) in hospital for acute, non-neoplastic, non-digestive-tract disorders. Less than 3% of cases or controls refused to be interviewed. Measurements and main results -Relative risks (RR) and the corresponding 95% confidence intervals (CI) were determined, adjusted for age and sex plus area of residence, education, and smoking when specified. Within 20 years after gastrectomy, the relative risk of gastric cancer was not significantly raised (RR = 1.2, 95% CI 0.5-2.8), but a positive association emerged after longer time intervals. The RR was 1.6 (95% CI 0.7-4.1) after 20 to 29 years, and 3.5 (95% CI 1.3-10.0) after 30 years or more. These results were consistent in the two sexes and in the subsequent age groups, and not materially influenced by allowance for a number of identified potential confounding factors using multivariate analysis. Conclusions - The risk of gastric cancer is increased in the long term (20 years or more) after gastrectomy. This is explainable in terms of increased intragastric carcinogen formation following gastrectomy, and/or potential similarities in aetiological correlates of gastric ulcer and carcinoma of the stomach
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