1,720,960 research outputs found
On Reeder’s Conjecture for Type B and C Lie Algebras
Full text linkIn the paper we propose a proof of Reeder’s Conjecture on the graded multiplicities of small representation in the exterior algebra Λg for simple Lie algebras of type B and C
Reeder’s Conjecture for Even Orthogonal Lie Algebras
Full text linkIn the paper we complete a case by case proof of Reeder’s Conjecture started in our previous work, proving the conjecture for simple Lie algebras of type D and for the exceptional cases
Surprising identities for the hypergeometric 4 F 3 function
Full text linkA convolution approach leading to an explicit computation of a value of a 4F3 function is outlined. We also investigate about the role of the dilogarithm reflection formula, leading to a remarkable consequence: in some cases, values of 4F3 are given by linear combinations of a squared arctangent and a squared logarithm
On the Homotopy Type of Multipath Complexes
Full text linkA multipath in a directed graph is a disjoint union of paths. The multipath complex of a directed graph (Formula presented.) is the simplicial complex whose faces are the multipaths of (Formula presented.). We compute Euler characteristics, and associated generating functions, of the multipath complexes of directed graphs from certain families, including transitive tournaments and complete bipartite graphs. We show that if (Formula presented.) is a linear graph, polygon, small grid or transitive tournament, then the homotopy type of the multipath complex of (Formula presented.) is always contractible or a wedge of spheres. We introduce a new technique for decomposing directed graphs into dynamical regions, which allows us to simplify the homotopy computations
Risk assessment in stock calf transportation from France to Italy: the contribution of road inspections
Full text linkIn order to assess the risk associated with the transport of stock calves imported from France to Italy, information obtained from inspections carried out in Piedmont by competent authorities between 2001 and 2010 was considered. The inspections concerned 246 trucks transporting a total of 13,857 fattening calves. Based on the types of infringements recorded, several hazards related to animal welfare, such as overcrowding, tying by the horns and inappropriate mixing, were identified and characterized. The inspection of vehicles revealed hazards concerning partitions, bedding, decks, lighting, drinking and mechanical ventilation systems. A calculation was made of the incidence of these infringements and the consequent exposure of calves to such hazards and risk characterization was performed. The ranking shows overcrowding and the absence of partitions to be major risks in stock calf transportation from France to Italy. A logistic regression was adopted to evaluate the effect on the exposure to hazards of the only two variables recordable during the inspections: number of calves inside each vehicle and distance of the journey. The results showed a direct relationship between the number of calves per vehicle and exposure to overcrowding or to absence of partitions. The journey distance was found weakly and inversely related to exposure to the absence of partitions. The information obtained from the inspections provides not only a basis for evaluating the welfare of calves during transport but also an objective contribution to the assessment of the risks tied to their transportation
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
The significance of hospital triage in the context of trauma patients
No full textBackground: In the field of emergency medicine, the question of how to ensure that patients receive the care they require in a timely manner has been a topic of debate for approximately 30 years throughout Europe. This is due to the fact that, as a result of advances in medical science and technology, it is now possible to assess the criticality of a patient's condition with greater accuracy than was previously possible. Case report: Authors analyzed a peculiar case occurred in a hospital in the South of Italy. A patient who had sustained multiple injuries underwent an understate in triage procedure, resulting in an unfavorable outcome. The assignment of a Code Red rather than a Code Blue would have resulted in the initiation of interventional care, including transfer to a hospital with the necessary resources for the subject's condition. This would have increased the likelihood of survival for the subject. Discussion: As illustrated by the presented case, inaccurate triage estimation by nursing staff can have dire consequences, as subsequent control levels are contingent upon the initial triage code assigned to a patient. This exemplifies the necessity for a unified national consensus on triage procedures in emergency departments, irrespective of hospital size. Conclusion: The subject matter is of significant national and international interest. A reformulation of the parameters governing access to emergency care would be necessary in order to significantly reduce the incidence of knowledge-based errors attributable to nurses who are sometimes compelled to work in conditions that are wholly unreliable3. The use of territorial structures located on the territory would be used to manage minor emergencies and appropriately treat patients in need of advanced care. It is possible to propose using local medicine to lessen the burden of emergency rooms, which are increasingly overcrowded with minor emergencies
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