Results 61 to 70 of about 399,123 (289)

Is cranial anatomy indicative of fossoriality? A case study of the mammaliaform Hadrocodium wui

The Anatomical Record, EarlyView.
Abstract Determining the ecology of fossil species presents considerable challenges due to the often fragmentary preservation of specimens. The mammaliaform Hadrocodium wui from the Jurassic of China is known only from the cranium and mandible but may have had a fossorial lifestyle.
Molly Tumelty, Stephan Lautenschlager
wiley   +1 more source

Entropy Evaluation Method for Sandstone Uranium Reservoir Characteristics Based on Convex Hull Search

IEEE Access, 2020
The continuity and homogeneity of sandstone uranium deposits are inherent characteristics that affect in situ leaching performance indexes and have important guiding effects on the optimization of mining design.
Kang He, Ming-Tao Jia, Chen Mei-Fang
doaj   +1 more source

The kynurenic acid analog SZR104 induces cytomorphological changes associated with the anti-inflammatory phenotype in cultured microglia

Scientific Reports, 2023
We previously showed the anti-inflammatory effects of kynurenic acid (KYNA) and its brain-penetrable analog N-(2-(dimethylamino)ethyl)-3-(morpholinomethyl)-4-hydroxyquinoline-2-carboxamide (SZR104) both in vivo and in vitro.
Melinda Szabo, Noémi Lajkó, Karolina Dulka, Gábor Barczánfalvi, Bálint Lőrinczi, István Szatmári, András Mihály, László Vécsei, Karoly Gulya   +8 more
doaj   +1 more source

“Visiting scientist effect”? Exploring the impact of time‐lags in the digitization of 2D landmark data

The Anatomical Record, EarlyView.
Abstract Measurement error (ME) in geometric morphometrics has been the subject of countless articles, but none specific to the effect of time lags on landmark digitization error. Yet, especially for visiting scientists working on museum collections, it is not uncommon to collect data in multiple rounds, with interruptions of weeks or years. To explore
Andrea Cardini
wiley   +1 more source

Deephullnet: a deep learning approach for solving the convex hull and concave hull problems with transformer

International Journal of Digital Earth
Convex and concave hulls originating from computational geometry are widely applied in practice. For instance, to determine the boundaries of a geographical area within a group of cities, convex hulls can represent the approximate boundaries of the areas.
Haojian Liang, Shaohua Wang, Song Gao, Huilai Li, Cheng Su, Hao Lu, Xueyan Zhang, Xi Chen, Yinan Chen   +8 more
doaj   +1 more source

A Fast and Robust Support Vector Machine With Anti-Noise Convex Hull and its Application in Large-Scale ncRNA Data Classification

IEEE Access, 2019
Support vector machine (SVM) achieves successful classification performance with the application in non-coding RNA (ncRNA) data. With the rapid increase of the species and sizes of ncRNA sequences, several fast SVM methods based on data distribution and ...
Xiaoqing Gu, Tongguang Ni, Yiqing Fan
doaj   +1 more source

Morphology and paleoecology of a hybodontiform with serrated teeth, Priohybodus arambourgi, from the Late Jurassic of northeastern Brazil

The Anatomical Record, EarlyView.
Abstract Hybodontiformes was a diverse, successful, and important group of shark‐like chondrichthyans known from a variety of ecosystems. Some representatives of the order had a wide palaeogeographic distribution, as is the case with Priohybodus arambourgi. With a multicuspidate crown, P. arambourgi was the first hybodontiform to develop fully serrated
Estevan Eltink, Kelly Roberta da Silva, Marco Aurélio Gallo de França, Débora Melo Ferrer de Morais, Matías Soto, Christopher J. Duffin   +5 more
wiley   +1 more source

Robust transmission expansion planning using pair-based convex hull uncertainty sets under high penetration of renewable energy generation

Energy Reports, 2022
Robust optimization is a practical and effective mathematical framework for coping with uncertainty in the transmission expansion planning (TEP) process, while computing the full convex hull is an outstanding data-driven means of searching for robust ...
Xin Yin, Haoyong Chen, Zipeng Liang, Qianya He   +3 more
doaj  

The relationship between form and function of the carnivore mandible

The Anatomical Record, EarlyView.
Abstract Dietary morphology diversified extensively in Carnivoraformes (living Carnivora and their stem relatives) during the Cenozoic (the last 66 million years) as they evolved to capture, handle, and process new animal and plant diets. We used 3D geometric morphometrics, mechanical advantage, and finite element analysis to test the evolutionary ...
Charles J. Salcido, P. David Polly
wiley   +1 more source

Generalizing the Convex Hull of a Sample: The R Package alphahull

Journal of Statistical Software, 2010
This paper presents the R package alphahull which implements the α-convex hull and the α-shape of a finite set of points in the plane. These geometric structures provide an informative overview of the shape and properties of the point set.
Beatriz Pateiro-López, Alberto Rodríguez-Casal   +1 more
doaj