Shape disparity of bovid (Mammalia, Artiodactyla) horn sheaths and horn cores allows discrimination by species in 3D geometric morphometric analyses
نویسندگان
چکیده
منابع مشابه
New Results for Horn Cores and Envelopes of Horn Disjunctions
We provide a characterization of Horn cores for formulas in conjunctive normal form (CNF) and, based on it, a novel algorithm for computing Horn cores of disjunctions of Horn CNFs that has appealing properties (e.g., it is polynomial for a bounded disjunction). Furthermore, we show that recognizing the Horn envelope of a disjunction of two Horn CNFs is intractable, and that computing a compact ...
متن کاملDisjunctions of Horn Theories and Their Cores Disjunctions of Horn Theories and Their Cores
In this paper, we study issues on disjunctions of propositional Horn theories. In particular, we consider deciding whether a disjunction of Horn theories is Horn, and, if not, computing a Horn core (i.e., a maximal Horn theory included in this disjunction) and Horn envelope (i.e., the minimum Horn theory including the disjunction). The problems are investigated for different representations of ...
متن کامل3D shape discrimination using relative disparity derivatives
Three-dimensional (3D) shape discrimination could be achieved using relative disparity signals or it could be achieved using a higher-order disparity derivative detector. Two 3D shape discrimination tasks were used to distinguish between these possibilities: a within-shape task and a between-shape task. Disparity thresholds were larger when discriminating within the same shape than when discrim...
متن کاملDisjunctions of Horn Theories and Their Cores
In this paper, we study issues on disjunctions of propositional Horn theories. In particular, we consider deciding whether a disjunction of Horn theories is Horn, and, if not, computing a Horn core, i.e., a maximal Horn theory included in this disjunction. The problems are investigated for different representations of Horn theories, namely for Horn CNFs and characteristic models. While the prob...
متن کاملSize and shape analysis of two close Cyprinidae species (Garra variabilis-Garra rufa) by geometric morphometric methods
In this study, the shape and size differences between 30 samples of Garra rufa and Garra variabilis species captured in Tigris River were investigated by using geometric morphometric methods. According to the results of this study, there is no difference between these two species in terms of size (CS); however, they are quite different from each other in terms of shape and this difference is si...
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ژورنال
عنوان ژورنال: Journal of Morphology
سال: 2017
ISSN: 0362-2525,1097-4687
DOI: 10.1002/jmor.20778