1,721,022 research outputs found
Learning from Linnaeus: towards developing the foundation for a general structure concept for morphology*
No full textVogt, Lars (2008): Learning from Linnaeus: towards developing the foundation for a general structure concept for morphology*. Zootaxa 1950 (1): 123-152, DOI: 10.11646/zootaxa.1950.1.11, URL: https://biotaxa.org/Zootaxa/article/view/zootaxa.1950.1.1
FIGURE 4 in Learning from Linnaeus: towards developing the foundation for a general structure concept for morphology*
No full textFIGURE 4. Example of two definitions of concepts expressed in RDF: a) the definition of 'polarized junctioned cell' (for more information see text); b) the definition of 'protonephridium'—a protonoephridium always consists of a nephropore cell, a duct cell, a terminal cell, and extracellular matrix. However, some structures cannot be defined satisfactorily without reference to dispositions of being able to actively participate in specific biological processes. This is also the case for protonephridium, which participates in the process of excretion. This process can be partitioned into different phases, which at their turn have different parts of the protonephridium as their participants.Published as part of Vogt, Lars, 2008, Learning from Linnaeus: towards developing the foundation for a general structure concept for morphology*, pp. 123-152 in Zootaxa 1950 (1) on page 146, DOI: 10.11646/zootaxa.1950.1.11, http://zenodo.org/record/524058
FIGURE 4 in Learning from Linnaeus: towards developing the foundation for a general structure concept for morphology*
No full textFIGURE 4. Example of two definitions of concepts expressed in RDF: a) the definition of 'polarized junctioned cell' (for more information see text); b) the definition of 'protonephridium'—a protonoephridium always consists of a nephropore cell, a duct cell, a terminal cell, and extracellular matrix. However, some structures cannot be defined satisfactorily without reference to dispositions of being able to actively participate in specific biological processes. This is also the case for protonephridium, which participates in the process of excretion. This process can be partitioned into different phases, which at their turn have different parts of the protonephridium as their participants.Published as part of Vogt, Lars, 2008, Learning from Linnaeus: towards developing the foundation for a general structure concept for morphology*, pp. 123-152 in Zootaxa 1950 (1) on page 146, DOI: 10.11646/zootaxa.1950.1.11, http://zenodo.org/record/524058
FIGURE 1 in Learning from Linnaeus: towards developing the foundation for a general structure concept for morphology*
No full textFIGURE 1. Aristotelian definitions: The definition of the 'parent' kind is inherited by all of its 'first child generation' kinds and forms the Genus part of their definitions. These represent properties that an instance of a 'child' kind necessarily has to possess. On the other hand, the essential property of a 'child' kind represents the distinguishing property that is in combination with the Genus part sufficient for the recognition of an instance of that kind, since all and only individuals that are instances of this kind do possess this property. This forms the Differentia part of the kind's definition. Genus and Differentia together represent the essence of the kind and at the same time its definition.Published as part of Vogt, Lars, 2008, Learning from Linnaeus: towards developing the foundation for a general structure concept for morphology*, pp. 123-152 in Zootaxa 1950 (1) on page 126, DOI: 10.11646/zootaxa.1950.1.11, http://zenodo.org/record/524058
Molecular phylogeny of lugworms (Annelida, Arenicolidae) inferred from three genes
No full textArenicolids comprise a group of four genera in which about 30 nominal species are described. Whereas the biology of many arenicolids is well known, the phylogenetic relationships of these worms are inadequately studied. A close relationship of Arenicolidae and Maldanidae is generally accepted. The phylogenetic relationships of arenicolid taxa were reconstructed based on sequence data of the mitochondrial 16S rRNA gene, the nuclear 18S rRNA gene, and a small fraction of the nuclear 28S rRNA gene. Members of all described arenicolid genera are included in the data set. Phylogenetic analyses were conducted using Maximum Likelihood, Bayesian inference, and Maximum Parsimony. The monophyly of the Maldanidae, as well as of the Arenicolidae is supported by all conducted analyses. Two well supported major clades are highest ranked sister taxa in the Arenicolidae: one containing all Abarenicola species and one containing Arenicola, Arenicolides, and Branchiomaldane. Evidence is given for a closer relationship between the two investigated Branchiomaldane species and Arenicolides ecaudata in the combined analysis. In the light of the molecular data the best explanation for structural and morphological observations is that Branchiomaldane evolved by progenesis
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
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