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Raspini Jéssica Prats Bonfante Mariele Canal Cúnico Franciele Rossetti Alarcon Orestes Estevam Campos Lucila M. S. 《Journal of Material Cycles and Waste Management》2022,24(5):1747-1759
Journal of Material Cycles and Waste Management - The transition from the current linear to a circular economy (CE) is a great challenge, especially in industries where the theme was barely... 相似文献
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J.?Orestes?CerdeiraEmail author Kevin?J.?Gaston Leonor?S.?Pinto 《Environmental Modeling and Assessment》2005,10(3):183-192
The spatial relations of sites within networks of priority areas for conservation is critical to the long-term maintenance
of key genetic, population and ecosystem processes. However, these relations have received relatively little attention in
the development of mathematical methods for objectively identifying such networks. Here we present a novel heuristic for incorporating
connectivity explicitly as part of the model constraints, provide an integer linear programming formulation for the same problem,
describe an integer cutting procedure which defines a sequence of non-decreasing lower bounds on the optimal solution and
report the results of some computational experiments using these algorithms. 相似文献
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Pedro C. Silva J. Orestes Cerdeira M. João Martins T. Monteiro-Henriques 《Environmental and Ecological Statistics》2014,21(1):27-39
Given a set $X$ of $k$ points and a point $z$ in the $n$ -dimensional euclidean space, the Tukey depth of $z$ with respect to $X$ , is defined as $m/k$ , where $m$ is the minimum integer such that $z$ is not in the convex hull of some set of $k-m$ points of $X$ . If $z$ belongs to the closed region $B$ delimited by an ellipsoid, define the continuous depth of $z$ with respect to $B$ as the quotient $V(z)/\text{ Vol }(B)$ , where $V(z)$ is the minimum volume of the intersection of $B$ with the halfspaces defined by any hyperplane passing through $z$ , and $\text{ Vol }(B)$ is the volume of $B$ . We consider $z$ a random variable and prove that, if $z$ is uniformly distributed in $B$ , the continuous depth of $z$ with respect to $B$ has expected value $1/2^{n+1}$ . This result implies that if $z$ and $X$ are uniformly distributed in $B$ , the expected value of Tukey depth of $z$ with respect to $X$ converges to $1/2^{n+1}$ as the number of points $k$ goes to infinity. These findings have applications in ecology, namely within the niche theory, where it is useful to explore and characterize the distribution of points inside species niche. 相似文献
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Bonetti Beatriz Waldow Etienne C. Trapp Giovanna Hammercshmitt Marta E. Ferrarini Suzana F. Pires Marçal J. R. Estevam Sabrina T. Aquino Thiago F. D. 《Environmental science and pollution research international》2021,28(3):2638-2654
Environmental Science and Pollution Research - The use of different types of zeolites (X, Na-P1, and 4A) synthesized by different methods and scales were tested in this work to adsorb nutrients... 相似文献
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