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Metrics on the Real Quantum Plane
No full textAbstract: Using the frame formalism we determine some possible metrics and metric-compatible connections on the noncommutative differential geometry of the real quantum plane. By definition a metric maps the tensor product of two 1-forms into a `function' on the quantum plane. It is symmetric in a modified sense, namely in the definition of symmetry one has to replace the permutator map with a deformed map \sigma fulfilling some suitable conditions. Correspondingly, also the definition of the hermitean conjugate of the tensor product of two 1-forms is modified (but reduces to the standard one if \sigma coincides with the permutator). The metric is real with respect to such modified *-structure
The real quantum plane as part of 2D-Minkowski space
No full textUsing the frame formalism we consider some possible metrics on the real quantum plane. We require that the metric be real and symmetric. In practice this means that we use the freedom of noncommutative geometry to impose a different 'sigma-symmetry', which is chosen so that a complex metric is 'sigma-real' and an un-symmetric metric is 'sigma-symmetric'. The notion of reality and symmetry are changed so that the definition of hermitian does not change. An analysis is then made of a set of possible metrics
Some Metrics on the Manin Plane
No full textDetermination of some possible metrics and metric-compatible connections on the noncommutative differential geometry of the real quantum (Manin) plane
Metrics on the Real Quantum Plane
No full textAbstract: Using the frame formalism we determine some possible metrics and metric-compatible connections on the noncommutative differential geometry of the real quantum plane. By definition a metric maps the tensor product of two 1-forms into a `function' on the quantum plane. It is symmetric in a modified sense, namely in the definition of symmetry one has to replace the permutator map with a deformed map \sigma fulfilling some suitable conditions. Correspondingly, also the definition of the hermitean conjugate of the tensor product of two 1-forms is modified (but reduces to the standard one if \sigma coincides with the permutator). The metric is real with respect to such modified *-structure
Health Care Financing Reform: Issues and Updates
Get PDFGeneration of funds and its efficient utilization have remained as a challenge to health authorities. This issue presents the recent efforts on health care financing as well as the concerns regarding its coverage, efficiency and sustainability. Policy recommendations ensue.health maintenance organizations, devolution, health care reform, health care financing, Primary Health Care Program, National Health Insurance Program, PHIC
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Some Metrics on the Manin Plane
No full textDetermination of some possible metrics and metric-compatible connections on the noncommutative differential geometry of the real quantum (Manin) plane
Variations on the Author
Get PDF“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
Get PDFWe 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
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