Results 11 to 20 of about 2,231,192 (331)
On Special Berwald Metrics [PDF]
In this paper, we study a class of Finsler metrics which contains the class of Berwald metrics as a special case. We prove that every Finsler metric in this class is a generalized Douglas-Weyl metric.
Peyghan, Esmaeil, Tayebi, Akbar
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Quasi-metric and metric spaces [PDF]
We give a short review of a construction of Frink to obtain a metric space from a quasi-metric space. By an example we illustrate the limits of the construction.
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The prevalence of onchocerciasis in Africa and Yemen, 2000–2018: a geospatial analysis
Background Onchocerciasis is a disease caused by infection with Onchocerca volvulus, which is transmitted to humans via the bite of several species of black fly, and is responsible for permanent blindness or vision loss, as well as severe skin disease ...
Chris A. Schmidt+8 more
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Health system strategies to increase HIV screening among pregnant women in Mesoamerica
Background To propose health system strategies to meeting the World Health Organization (WHO) recommendations on HIV screening through antenatal care (ANC) services, we assessed predictors of HIV screening, and simulated the impact of changes in these ...
Charbel El Bcheraoui+12 more
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Predictive performance of international COVID-19 mortality forecasting models
Forecasts of COVID-19 mortality have been critical inputs into a range of policies, and decision-makers need information about their predictive performance.
Joseph Friedman+12 more
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MORE ON THE METRIC SPACE OF METRICS [PDF]
The paper brings two results (about cardinality and porosity) of the metric space of metrics on a set \(X\).
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On length spectrum metrics and weak metrics on Teichmüller spaces of surfaces with boundary [PDF]
We define and study metrics and weak metrics on the Teichmüller space of a surface of topologically finite type with boundary. These metrics and weak metrics are associated to the hyperbolic length spectrum of simple closed curves and of properly ...
Liu, L.+3 more
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Metric topological groups: their metric approximation and metric ultraproducts [PDF]
We define a metric ultraproduct of topological groups with left-invariant metric, and show that there is a countable sequence of finite groups with left-invariant metric whose metric ultraproduct contains isometrically as a subgroup every separable topological group with left-invariant metric.
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Percept of the duration of a vibrotactile stimulus is altered by changing its amplitude
There have been numerous studies conducted on time perception. However, very few of these have involved tactile stimuli to assess a subject’s capacity for duration discrimination. Previous optical imaging studies in non-human primates demonstrated that
Eric M Francisco+5 more
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Introduction In 2017, development assistance for health (DAH) comprised 5.3% of total health spending in low-income countries. Despite the key role DAH plays in global health-spending, little is known about the characteristics of assistance that may be ...
Angela E Micah+7 more
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