1,721,002 research outputs found
Diaquabis[4-(dimethylamino)benzoato-kappa O]-(nicotinamide-kappa N-1)manganese(II) dihydrate
No full textThe title manganese complex, [Mn(C9H10NO2)(2)(C6H6N2O)(2)(H2O)(2)]center dot 2H(2)O, is monomeric and centrosymmetric. It contains two 4-(dimethylamino) benzoate ( DMAB) and two nicotinamide (NA) ligands, two coordinated and two uncoordinated water molecules, all ligands being monodentate. The four O atoms in the equatorial plane around the Mn atom form a slightly distorted square-planar arrangement, while the distorted octahedral coordination is completed by the two NA N atoms in the axial positions. In the crystal structure, intermolecular O-H center dot center dot center dot O and N-H center dot center dot center dot O hydrogen bonds link the molecules to form a supramolecular structure
Diaquabis[4-(dimethylamino)benzoato-kappa O]-(nicotinamide-kappa N-1)cobalt(II) dihydrate
No full textThe title complex, [ Co( C9H10NO2)(2)( C6H6N2O)(2)( H2O)(2)]center dot 2H(2)O, is monomeric with the Co atom situated on a crystallographic center of inversion. It contains two 4( dimethylamino) benzoate ( DMAB) and two nicotinamide ( NA) ligands, and two coordinated and two uncoordinated water molecules, all ligands being monodentate. The four O atoms coordinating the Co atom form a slightly distorted square-planar arrangement, while the distorted octahedral coordination is completed by the two NA N atoms in the axial positions. The crystal structure is determined by intra- and intermolecular O-H center dot center dot center dot O and N-H center dot center dot center dot O hydrogen bonds
Tetraaquabis[4-(dimethylamino)benzoato-kappa O]manganese(II) dihydrate
No full textThe title Mn-II complex, [Mn(C9H10NO2)(2)(H2O)(4)](.)2H(2)O, is monomeric and centrosymmetric. It contains two 4-dimethyl-aminobenzoate ligands, four coordinated and two uncoordinated water molecules, all ligands being monodentate. The four O atoms in the equatorial plane around the Mn atom form a slightly distorted square-planar arrangement, while the distorted octahedral coordination is completed by the two water O atoms in the axial positions. In the crystal structure, intra- and intermolecular O-(HO)-O-... hydrogen bonds link the molecules into chains
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
Diaquabis(4-bromobenzoato-kO)-bis(nicotinamide-kappa N-1)cobalt(II)
No full textThe title complex, [Co(C7H4BrO2)(2)(C6H6N2O)(2)(H2O)(2)], is monomeric and centrosymmetric, and contains two water molecules, two 4-bromobenzoate (BB) anions and two nicotinamide (NA) ligands, all acting as monodentate ligands. The four nearest O atoms in the equatorial plane around the Co atom form a slightly distorted square-planar arrangement, while the distorted octahedral coordination is completed by the two NA N atoms in the axial positions. Intermolecular O - H center dot center dot center dot O and N - H center dot center dot center dot O hydrogen bonds link the molecules into two-dimensional sheets
Diaquabis(4-fluorobenzoato-kappa O)bis(nicotinamide-kappa N-1)cobalt(II)
No full textThe title Co II complex, [Co(C7H4FO2)(2)(C6H6N2O)(2)(H2O)(2)], is monomeric and centrosymmetric. It contains two 4-fluoro-benzoate and two nicotinamide ligands and two water molecules, all ligands being monodentate. The four O atoms in the equatorial plane around the Co atom form a slightly distorted square-planar arrangement, while the distorted octahedral coordination is completed by the two N atoms in the axial positions. In the crystal structure, O-H center dot center dot center dot O and N-H center dot center dot center dot O hydrogen bonds link the molecules, to form a twodimensional network parallel to the (10 (1) over bar) plane
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
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