Examining mathematical discourse to understand in-service teachers’ mathematical activities
Pythagoras, 2013 In this article I use Sfard’s theory of commognition to examine the surprising activities of a pair of in-service mathematics teachers in South Africa as they engaged in a particular mathematical task which allowed for, but did not prescribe, the use ...
Margot Berger
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Evaluating the status of African wild dogs Lycaon pictus and cheetahs Acinonyx jubatus through tourist-based photographic surveys in the Kruger National Park [corrected]. [PDF]
PLoS ONE, 2014 The Kruger National Park is a stronghold for African wild dog Lycaon pictus and cheetah Acinonyx jubatus conservation in South Africa. Tourist photographic surveys have been used to evaluate the minimum number of wild dogs and cheetahs alive over the ...
Kelly Marnewick +5 more
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A Double Error Dynamic Asymptote Model of Associative Learning [PDF]
, 2019 In this paper a formal model of associative learning is presented which incorporates representational and computational mechanisms that, as a coherent corpus, empower it to make accurate predictions of a wide variety of phenomena that so far have eluded ...
Alonso, E., Mondragon, E., Kokkola, N.
core +1 more source
High‐Efficiency Deep Blue Single‐Gaussian Europium(II) Emitters and Their Emitter‐Host Interactions
Advanced Functional Materials, EarlyView.Crown‐ether ligands and carborate anions enable vacuum‐processable Eu(II) emitters with efficient single‐Gaussian deep‐blue luminescence. Combined photophysical and computational analyses reveal that excited‐electron confinement and steric shielding of the europium center jointly govern compatibility with OLED host materials, establishing molecular ...
Mahmoud Soleimani +8 more
wiley +1 more source
New Journal of Physics, 2015 The thresholding of time series of activity or intensity is frequently used to define and differentiate events. This is either implicit, for example due to resolution limits, or explicit, in order to filter certain small scale physics from the supposed ...
Francesc Font-Clos +3 more
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Characterization of the lactation curve of f1 Holstein-Zebu cows
Ecosistemas y Recursos Agropecuarios, 2018 The objective was to nd a function to describe the lactation curve of grazing Holstein - Zebu cows (n=23) in tropical México. Twelve were based on the general nonlinear function A*Φ1(x)*Φ2(x): A, a positive scalar; Φ1 , a positive monotonically ...
Epigmenio Castillo-Gallegos
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Full Analysis of Lung Cancer Mortality/Radon Relationship with Simple Nonlinear Concepts
Dose-Response, 2021 We analyze the relationship between the lung cancer mortality and the indoor radon intensity from the viewpoint of nonlinear mathematics. We conclude that their relationship is governed by the proportionality law where the cumulative lung cancer ...
Ralph W. Lai PhD
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Rethinking Charge Transport and Recombination in Donor‐Diluted Organic Solar Cells
Advanced Materials, EarlyView.Organic solar cells with 1–45% PM6 content in Y12 were studied to link structure and charge dynamics to performance. The conductivity follows a 3D percolation model without a sharp threshold. Donor dilution preserves the photogeneration yield, but limits the fill factor due to transport resistance losses.
Chen Wang +14 more
wiley +1 more source
Dominant Height Model for Site Classification of Eucalyptus grandis Incorporating Climatic Variables
International Journal of Forestry Research, 2013 This study tested the effects of inserting climatic variables in Eucalyptus grandis as covariables of a dominant height model, which for site index classification is usually related to age alone.
José Roberto Soares Scolforo +5 more
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On the Delayed Scaled Consensus Problems
Applied Sciences, 2017 In this note, we study the scaled consensus (tracking) problems, wherein all agents reach agreement, but with different assigned ratios in the asymptote.
Yilun Shang
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