9,995 research outputs found
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Connecting the dots: Why does what and who came before us matter?
A "Coloring Outside the Lines" editorial column.Ā A review of organizations who pioneered the involvement of persons of color in park stewardship, outdoor recreation, historic preservation, and other forms of place-based conservation.
Recommended from our members
Sea-level rise and vanishing coastal parks: A call to action for park managers and leaders
A "Coloring Outside the Lines" editorial column
Use of Multiple Methods: An Examination of Constraints Effecting Ethnic Minority Visitor Use of National Parks and Management Implications
Understanding outdoor recreation participation and national park visitation by members of ethnic minority groups has been a particular focus of outdoor recreation researchers for the past twenty years. Attracting ethnic minorities, and understanding their recreation needs and interests, demands a multi-faceted approach and sustained commitment not only by the U.S. National Park Service (NPS) but by other resource management agencies as well
Melting and Freezing Lines for a Mixture of Charged Colloidal Spheres with Spindle-Type Phase Diagram
We have measured the phase behavior of a binary mixture of like-charged
colloidal spheres with a size ratio of 0.9 and a charge ratio of 0.96 as a
function of particle number density n and composition p. Under exhaustively
deionized conditions the aqueous suspension forms solid solutions of body
centered cubic structure for all compositions. The freezing and melting lines
as a function of composition show opposite behavior and open a wide, spindle
shaped coexistence region. Lacking more sophisticated treatments, we model the
interaction in our mixtures as an effective one-component pair energy
accounting for number weighted effective charge and screening constant. Using
this description, we find that within experimental error the location of the
experimental melting points meets the range of melting points predicted for
monodisperse, one component Yukawa systems made in several theoretical
approaches. We further discuss that a detailed understanding of the exact phase
diagram shape including the composition dependent width of the coexistence
region will need an extended theoretical treatment.Comment: 25 pages, 4 figure
Symbol detection in online handwritten graphics using Faster R-CNN
Symbol detection techniques in online handwritten graphics (e.g. diagrams and
mathematical expressions) consist of methods specifically designed for a single
graphic type. In this work, we evaluate the Faster R-CNN object detection
algorithm as a general method for detection of symbols in handwritten graphics.
We evaluate different configurations of the Faster R-CNN method, and point out
issues relative to the handwritten nature of the data. Considering the online
recognition context, we evaluate efficiency and accuracy trade-offs of using
Deep Neural Networks of different complexities as feature extractors. We
evaluate the method on publicly available flowchart and mathematical expression
(CROHME-2016) datasets. Results show that Faster R-CNN can be effectively used
on both datasets, enabling the possibility of developing general methods for
symbol detection, and furthermore, general graphic understanding methods that
could be built on top of the algorithm.Comment: Submitted to DAS-201
Biomechanical factors may explain why grasping violates Weber's law
Copyright Ā© 2015. Published by Elsevier Ltd. Acknowledgments The experiment was part of N. Aschennellerās MD thesis. The study was funded by the Staedtler Stiftung (Nuremberg, Germany).Peer reviewedPostprin
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