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Articles by Ryan MJ
The first occurrence of a probable pachycephalosaurian hyoid element
The first occurrence of a probable pachycephalosaurian hyoid element 1Phillip and Patricia Frost Museum of Science, Miami, FL, United States 2Museum of the Rockies, Bozeman, Montana, United States 3American Museum of Natural History, New York, New York, United States 4Department of Anatomy and Cell Biology, Oklahoma State University, Tulsa, OK, United States 5The Children’s Museum of Indianapolis, Indianapolis, IN, United States DOI 10.7717/peerj.21719 Academic Editor Paula Bona Subject Areas...
Body reconstruction and size estimation of plesiosaurs
Body reconstruction and size estimation of plesiosaurs Department of Mathematics, Northwest University, Xi’an, China DOI 10.7717/peerj.21146 Academic Editor Kenneth De Baets Subject Areas Computational Biology, Evolutionary Studies, Mathematical Biology, Paleontology, Zoology Keywords Ribcage restoration, Plesiosaurs, Body size estimation, Cross-sectional method, Biological scaling, Skeletal reconstruction, Volumetric-density, Marine reptiles, Regression, Body mass Copyright © Licence This is...
Three new Pristimantis species in the subgenus Huicundomantis (Amphibia: Anura: Strabomantidae) from Reserva Biológica Cerro Plateado, southern Ecuador
Three new Pristimantis species in the subgenus Huicundomantis (Amphibia: Anura: Strabomantidae) from Reserva Biológica Cerro Plateado, southern Ecuador 1Museo de Zoología, Universidad Técnica Particular de Loja, Loja, Ecuador 2Laboratorio de Ecología Tropical y Servicios Ecosistémicos (EcoSs-Lab), Facultad de Ciencias Exactas y Naturales, Departamento de Ciencias Biológicas y Agropecuarias, Universidad Técnica Particular de Loja, Loja, Ecuador 3Faculty of Natural and Agricultural Sciences,...
Prolonged growth and extended subadult development in the Tyrannosaurus rex species complex revealed by expanded histological sampling and statistical modeling
Prolonged growth and extended subadult development in the Tyrannosaurus rex species complex revealed by expanded histological sampling and statistical modeling 1Department of Anatomy and Cell Biology, Oklahoma State University Center for Health Sciences, Tulsa, Oklahoma, United States 2Intellectual Ventures, Bellevue, Washington, United States 3Schmid College of Science and Technology, Chapman University, Orange, California, United States DOI 10.7717/peerj.20469 Academic Editor Fabien Knoll...
Advancing thyroid diagnosis: integrating AI-driven CAD framework with numerical data and ultrasound images
The diagnosis of thyroid disorders has undergone significant advancements in recent years, with numerous studies utilizing various methodologies and technologies to improve diagnostic accuracy and efficiency. Researchers such as Liu et al. (2023) and Bal-Ghaoui et al. (2023) have made notable contributions to this field, employing innovative approaches to address the challenges associated with thyroid disease diagnosis.
Psittacosaurus houi, a longer snouted psittacosaurid from the Lower Cretaceous Lujiatun Unit of Yixian Formation, China, with the synonymy of the unresolved genus Hongshanosaurus revisited
Psittacosaurus houi, a longer snouted psittacosaurid from the Lower Cretaceous Lujiatun Unit of Yixian Formation, China, with the synonymy of the unresolved genus Hongshanosaurus revisited 1Department of Bioscience and Biotechnology, Fukui Prefectural University, Eiheiji, Fukui, Japan 2Zhejiang Museum of Natural History, Hangzhou, Zhejiang, China 3Faculty of Dinosaur Paleontology, Fukui Prefectural University, Eiheiji, Fukui, Japan 4Fukui Prefectural Dinosaur Museum, Katsuyama, Fukui, Japan...
A revised turtle assemblage from the Upper Cretaceous Menefee Formation (New Mexico, North America) with evolutionary and paleobiostratigraphic implications
A revised turtle assemblage from the Upper Cretaceous Menefee Formation (New Mexico, North America) with evolutionary and paleobiostratigraphic implications 1School of Human Evolution and Social Change, Arizona State University, Tempe, Arizona, United States 2Department of Anatomy, Midwestern University, Glendale, Arizona, United States 3Western Science Center, Hemet, California, United States DOI 10.7717/peerj.19340 Academic Editor Huiting Wu Subject Areas Evolutionary Studies, Paleontology,...
Deep cryptic diversity in the Craugastor podiciferus Species Group (Anura: Craugastoridae) of Isthmian Central America revealed by mitochondrial and nuclear data
Deep cryptic diversity in the Craugastor podiciferus Species Group (Anura: Craugastoridae) of Isthmian Central America revealed by mitochondrial and nuclear data 1Escuela de Biología, Universidad de Costa Rica, San José, Costa Rica 2Museo de Zoología, Centro de Investigaciones en Biodiversidad y Ecología Tropical, Universidad de Costa Rica, San José, Costa Rica 3Zoology, Instituto de Biología, UNAM, Mexico City, Mexico 4Departamento de Ciencias Biológicas, Universidad de los Andes, Bogotá,...
Spatial layout optimization model integrating layered attention mechanism in the development of smart tourism management
Recent years have witnessed a rapid rise in China’s tourist industry, propelled by the country’s economic growth and the rapid expansion of the Internet (Liu, Gao & Li, 2024). Moreover, China boasts a wealth of tourism resources that support the industry’s development and contribute to the steady increase in the number of tourists visiting the country. With the increasing number of tourists, this has also brought about some challenges to the development of the tourism industry.
The critical elements of the health system that could make for resilience in the World Health Organization African Region: a scoping review
There has never been a better opportunity for countries to embrace the idea of health system resilience than this time, when we are still recovering from the COVID-19 pandemic, one of the deadliest in the history of public health crises. The COVID-19 pandemic has further exposed the fragility of the health systems. This review, therefore, aimed to provide an overview of methods that countries, especially in Africa, might utilise to make their health care systems more resilient.
Lost, hidden, broken, cut-estimating and interpreting the shapes and masses of damaged assemblages of plesiosaur gastroliths
Lost, hidden, broken, cut-estimating and interpreting the shapes and masses of damaged assemblages of plesiosaur gastroliths Royal Tyrrell Museum of Palaeontology, Drumheller, Alberta, Canada DOI 10.7717/peerj.17925 Academic Editor Mark Young Subject Areas Paleontology, Zoology Keywords Plesiosaur, Gastroliths, Body mass, Taphonomy Copyright © Licence This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use,...
Morphology and vocalization comparison of the Houston Toad and the Dwarf American Toad: implications for their historic range
Morphology and vocalization comparison of the Houston Toad and the Dwarf American Toad: implications for their historic range 1Cambrian Environmental, Austin, TX, United States of America 2Biological Research and Teaching Collection, Department of Ecology and Conservation Biology, Texas A&M University, College Station, TX, United States of America 3Texas A&M Natural Resources Institute, College Station, TX, United States of America 4Department of Biology, Texas State University, San Marcos,...
Not so cryptic-differences between mating calls of Hyla arborea and Hyla orientalis from Bulgaria
Not so cryptic–differences between mating calls of Hyla arborea and Hyla orientalis from Bulgaria Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciensces, Sofia, Bulgaria DOI 10.7717/peerj.17574 Academic Editor Javier Manjarrez Subject Areas Biodiversity, Taxonomy, Zoology Keywords Bioacoustics, Call parameters, Sister species, Taxonomy, Treefrogs Copyright © Licence This is an open access article distributed under the terms of the Creative Commons Attribution...
Vocal repertoire of Microhyla nilphamariensis from Delhi and comparison with closely related M. ornata populations from the western coast of India and Sri Lanka
Megha Srigyan performed the experiments, participated in fieldwork, analyzed the data, prepared figures and/or tables, prepared the manuscript, authored and reviewed drafts of the paper, and approved the final draft. Abdus Samad performed the experiments, participated in fieldwork, analyzed the data, prepared tables, reviewed drafts of the paper, and approved the final draft.
An improved differential evolution algorithm for multi-modal multi-objective optimization
MODE is widely used for solving MMOPs, which are named as MMEAs. First, the definition of DE algorithm and APC is presented. The corresponding definitions, including local PS, global PS, local PF and global PF, can be referred to Li et al. (2022). In a typical MMOP, only one global PF maps to either a single PS or multiple global PSs, as shown in Fig. 1. However, in an MMOP with a local Pareto front (MMOPL), there exist local PFs and only one global PF, as depicted in Fig. 2.
Indoor surface classification for mobile robots
This section presents a detailed description of the dataset generated in this study, along with an in-depth discussion about the selection and architecture design of pre-trained state-of- the-art feature-extraction models, as well as the application of various optimization algorithms. It specifically focuses on the generation of a new dataset, pre-processing steps, implementation of CNN-based models, and the selection of the appropriate optimization algorithms.
Restudy of shoulder motion in the theropod dinosaur Mononykus olecranus (Alvarezsauridae)
Restudy of shoulder motion in the theropod dinosaur Mononykus olecranus (Alvarezsauridae) Department of Biological and Forensic Sciences, Fayetteville State University, Fayetteville, North Carolina, United States DOI 10.7717/peerj.16605 Academic Editor John Hutchinson Subject Areas Animal Behavior, Evolutionary Studies, Paleontology, Zoology Keywords Mononykus, Alvarezsauridae, Theropoda, Myrmecophagy, Insectivory, Functional morphology, Range of motion, Forelimb, Skalodactyly, Skalodactyl...
Sperm specificity and potential paternal effects in gynogenesis in the Amazon Molly (Poecilia formosa)
Sperm specificity and potential paternal effects in gynogenesis in the Amazon Molly (Poecilia formosa) 1Division of Comparative Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America 2Department of Biology, University of Oklahoma, Norman, Oklahoma, United States of America 3Lab Animal Resource Center, The University of Texas at Dallas, Richardson, TX, United States of America 4International Stock Center for Livebearing Fishes, University of...
Hidden shifts in allometry scaling between sound production and perception in anurans
Hidden shifts in allometry scaling between sound production and perception in anurans 1Laboratório de História Natural de Anfíbios Brasileiros, Universidade Estadual de Campinas, Campinas, São Paulo, Brasil 2Department of Biology, University of Richmond, Richmond, VA, United States of America 3Laboratório de Ecologia Evolutiva de Anfíbios, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil 4Programa de Pós Graduação em Biologia Animal, Universidade Estadual de Campinas,...
Optimization of predictive performance of intrusion detection system using hybrid ensemble model for secure systems
The increase in the active internet users has set off significant risks to the network resources and communication security (Abdulhammed et al., 2018). Any unauthorized activity by an illicit individual, triggering changes to the network resources and systems, stealing sensitive/valuable network resources, or malicious actions to disrupt normal routine of the network is considered as intrusion (Saeed, 2022).
Proposal for an objective binary benchmarking framework that validates each other for comparing MCDM methods through data analytics
Literature review In this section, we will first examine some of the classical views in the literature on rationality on which the concepts of selection, comparison, and capacity for an appropriate MCDM are based. Second, we look at MCDM-based FP measurement and evaluation studies.
Rapid growth in Late Cretaceous sea turtles reveals life history strategies similar to extant leatherbacks
Methods Humeri and femora were thin sectioned to assess ontogenetic stage and growth rates (Fig. 1). Humeri were sectioned just distal to the deltopectoral crest and femora were sectioned at the mid-diaphysis. Zug, Wynn & Ruckdeschel (1986) sectioned multiple elements from loggerhead cranial, axial, and appendicular skeletons to access suitability for osteohistology analysis.
A new juvenile Yamaceratops (Dinosauria, Ceratopsia) from the Javkhlant Formation (Upper Cretaceous) of Mongolia
Introduction Ceratopsian dinosaurs appeared in the Late Jurassic of Asia and flourished in the Late Cretaceous of North America. In early evolutionary history, basal ceratopsians were small, bipedal dinosaurs without much-elaborated structures (Xu et al., 2006; Han et al., 2016), but the Late Cretaceous ceratopsoids became quadrupedal giants with large horns and frills on their heads (Sues & Averianov, 2009; Wolfe et al., 2010).
The phylogenetic nomenclature of ornithischian dinosaurs
Protocol In order to be formally established under the ICPN, clade names must comply especially with the provisions of Articles 7 and 9–11 of the Code (ICPN: Art. 7.2d). These Articles are fully followed here. The entries, provided in ‘Phylogenetic nomenclature of ornithischian clades’ below, partly follow the scheme used in Phylonyms (de Queiroz, Cantino & Gauthier, 2020); they include the following sub-sections: ‘Definition’, ‘Reference phylogeny’, ‘Composition’, ‘Synonyms’, and ‘Comments’.
Geology and taphonomy of a unique tyrannosaurid bonebed from the upper Campanian Kaiparowits Formation of southern Utah: implications for tyrannosaurid gregariousness
Introduction Monodominant large theropod dinosaur bonebeds are rare in the geologic record.
A new elasmosaurid (Sauropterygia: Plesiosauria) from the non-marine to paralic Dinosaur Park Formation of southern Alberta, Canada
Introduction The Upper Cretaceous (upper Campanian) Dinosaur Park Formation (DPF) is an alluvial to paralic sedimentary unit exposed in southern Alberta and Saskatchewan (Eberth, 2005). These sediments were deposited on the eastern coastal plain of Laramidia, which drained eastwards into the Western Interior Seaway (Blakey, 2020).
Glucocorticoids enhance the antileukemic activity of FLT3 inhibitors in FLT3-mutant acute myeloid leukemia
MYELOID NEOPLASIA| August 27, 2020 You do not currently have access to this content.
New insights into chasmosaurine (Dinosauria: Ceratopsidae) skulls from the Upper Cretaceous (Campanian) of Alberta, and an update on the distribution of accessory frill fenestrae in Chasmosaurinae
The Belly River Group is a predominantly terrestrial sedimentary sequence that was deposited along the western margin of the Western Interior Seaway ( Eberth, 2005 ). This group includes, in ascending stratigraphic order, the Foremost, Oldman, and DPFs. The Oldman and DPFs both represent large-scale alluvial fans that thicken toward their respective sediment sources along the rising Cordillera to the west ( Eberth & Hamblin, 1993 ).
Neck biomechanics indicate that giant Transylvanian azhdarchid pterosaurs were short-necked arch predators
Neck biomechanics in giant azhdarchids EME 315 represents an anatomical extreme among pterosaur neck vertebrae: its size, bone wall thickness and massiveness are unprecedented among other flying reptile remains. Its structural properties, and utility within a possibly shorter variant of the azhdarchid neck, are therefore significant not only to our understanding of azhdarchid palaeobiology as a whole, but in that they represent a hitherto unreported morphological class of pterosaur anatomy.
A new leptoceratopsid dinosaur from Maastrichtian-aged deposits of the Sustut Basin, northern British Columbia, Canada
Introduction The dense boreal forest and thrusted, folded rocks of the Canadian Cordillera present a challenging environment in which to search for dinosaurs, compared to the better exposed and more easily accessible outcrops in the badlands of the prairie provinces. Nevertheless, a dinosaur specimen (RBCM P900) consisting of articulated and disarticulated limb and girdle elements was discovered in 1971 in the remote interior mountains of north-central British Columbia (Fig.
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