2,378 research outputs found
On-field player workload exposure and knee injury risk monitoring via deep learning
In sports analytics, an understanding of accurate on-field 3D knee joint
moments (KJM) could provide an early warning system for athlete workload
exposure and knee injury risk. Traditionally, this analysis has relied on
captive laboratory force plates and associated downstream biomechanical
modeling, and many researchers have approached the problem of portability by
extrapolating models built on linear statistics. An alternative approach would
be to capitalize on recent advances in deep learning. In this study, using the
pre-trained CaffeNet convolutional neural network (CNN) model, multivariate
regression of marker-based motion capture to 3D KJM for three sports-related
movement types were compared. The strongest overall mean correlation to source
modeling of 0.8895 was achieved over the initial 33 % of stance phase for
sidestepping. The accuracy of these mean predictions of the three critical KJM
associated with anterior cruciate ligament (ACL) injury demonstrate the
feasibility of on-field knee injury assessment using deep learning in lieu of
laboratory embedded force plates. This multidisciplinary research approach
significantly advances machine representation of real-world physical models
with practical application for both community and professional level athletes
Complete larval development of the hermit crabs Clibanarius aequabilis and Clibanarius erythropus (Decapoda : Anomura : Diogenidae), under laboratory conditions, with a revision of the larval features of genus Clibanarius
The complete larval development (four zoeae and one megalopa) of Clibanarius aequabilis and C. erythropus, reared under laboratory conditions, is described and illustrated. The larval stages of the two northeastern Atlantic Clibanarius species cannot be easily differentiated. Their morphological characters are compared with those of other known Clibanarius larvae. The genus Clibanarius is very homogeneous with respect to larval characters. All Clibanarius zoeae display a broad and blunt rostrum, smooth abdominal segments and an antennal scale without a terminal spine. Beyond the second zoeal stage, the fourth telson process is present as a fused spine, and the uropods are biramous. In the fourth larval stage all species display a mandibular palp. The Clibanarius megalopa presents weakly developed or no ocular scales, symmetrical chelipeds, apically curved corneous dactylus in the second and third pereiopods, and 5-11 setae on the posterior margin of the telson. Apart from the number of zoeal stages, Clibanarius species may be separated, beyond the second zoeal stage, by the telson formula and the morphology of the fourth telson process.info:eu-repo/semantics/publishedVersio
Cerebral fungal infection with mycotic aneurysm of basilar artery and subarachnoid haemorrhage
A 28-year-old Pakistani man was admitted with unresolved severe headaches for the past four weeks. Magnetic resonance (MR) imaging and MR angiography showed an enhancing mass in the sphenoid sinus, bilateral cerebellar infarcts and aneurysmal dilatation of the basilar artery. The differential diagnosis included fungal infection versus neoplastic lesion. The scrappings taken through the endoscope from the sphenoid sinus were initially negative for fungal infection. However, the second biopsy, done after putting him on antifungal, itraconazole 200 mg twice daily, revealed the presence of a fungal infection (aspergillosis). MR imaging revealed extension of the fungal infection from the sphenoid sinus into the clivus, and then intracranially. Imaging also revealed aneurysmal dilatation of the basilar artery and infarctions in the cerebellum and subarachnoid haemorrhage. Despite aggressive antifungal treatment, the Patient died after 29 days. This case report describes the probable mechanism of fungal mycotic aneurysmal vascular dilatation and growth. It also points to the need for a rapid diagnosis of potential cases and an aggressive treatment approach of confirmed cases of fungal infections of the central nervous system
DDFT calibration and investigation of an anisotropic phase-field crystal model
The anisotropic phase-field crystal model recently proposed and used by
Prieler et al. [J. Phys.: Condens. Matter 21, 464110 (2009)] is derived from
microscopic density functional theory for anisotropic particles with fixed
orientation. Further its morphology diagram is explored. In particular we
investigated the influence of anisotropy and undercooling on the process of
nucleation and microstructure formation from atomic to the microscale. To that
end numerical simulations were performed varying those dimensionless parameters
which represent anisotropy and undercooling in our anisotropic phase-field
crystal (APFC) model. The results from these numerical simulations are
summarized in terms of a morphology diagram of the stable state phase. These
stable phases are also investigated with respect to their kinetics and
characteristic morphological features.Comment: It contain 13 pages and total of 7 figure
Efficiency of universal barcode gene (Cox1) on morphologically cryptic Mugilidae fishes delineation.
An effort was made to assess the utility of 650 bp partial Cytochrome C oxidase subunit I (DNA barcode) gene in delineating the members of taxonomically ambiguous marine fin fishes (Family: Mugilidae). To address the issue we used all the 95 barcode sequences of Mugilidae family available at NCBI (National Centre for Biotechnological Information) along with the barcode data generated from Mugilidae fishes of Parangipettai coastal waters. The average GC content of Mugilidae was found to be 46.46%. Crenimugil crenilabis showed less GC content (44.55%) whereas Liza macrolepis showed high GC content (48.53%) among the mullet species studied. The phylogenetic and genetic distance data showed that Mugil platanus and M. liza represent the continuum of same species. Among the members of family Mugilidae, the genus Mugil might possibly contains more haplotype diversity as revealed by intra-species genetic distance data. Species within genera of Mugilidae family invariably clustered in single clade with high bootstrap value. We conclude that partial COI sequencing (barcoding) in identifying the members of the family and that way has resolved the taxonomic ambiguity among the members of the family Mugilidae
Effects of antiplatelet therapy on stroke risk by brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases: subgroup analyses of the RESTART randomised, open-label trial
Background
Findings from the RESTART trial suggest that starting antiplatelet therapy might reduce the risk of recurrent symptomatic intracerebral haemorrhage compared with avoiding antiplatelet therapy. Brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases (such as cerebral microbleeds) are associated with greater risks of recurrent intracerebral haemorrhage. We did subgroup analyses of the RESTART trial to explore whether these brain imaging features modify the effects of antiplatelet therapy
The Influence of Leadership and Training on Teacher Competence and Performance
This research aims to determine the effect of leadership and education, and training on teacher competence and performance at private Islamic secondary schools (MTSS) in Muhammadiyah Bulukumba Regency. This study uses a quantitative approach. The data used in this study are primary data and secondary data. Primary data was obtained by distributing questionnaires to respondents, the teachers at MTSS Muhammadiyah Bulukumba Regency. Meanwhile, secondary data were obtained from institutions/organizations or parties related to this research, namely data from the MTSS Muhammadiyah Region, Bulukumba Regency, in the form of data on the influence of leadership and training on teacher performance through competence. The sampling technique used in this research is purposive sampling. The analytical method used is path analysis in testing the hypothesis test with the help of PLS 3.0. The results of this study indicate that the leadership and training variables have a positive effect on teacher competence and performance at MTSS Muhammadiyah Bulukumba Regency, and leadership variables affect teacher performance at MTSS Muhammadiyah Bulukumba Regency. The results of this study are used as input for MTSS Muhammadiyah Bulukumba Regency in matters of leadership, training, and competence and their influence on teacher performance, as well as reference material for further researchers who are interested in leadership, training, competence, and teacher performance
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