Results 181 to 190 of about 70,247 (289)

An Extended Formulation With Valid Inequalities for the Capacitated Steiner Arborescence Problem

Networks, EarlyView.
ABSTRACT Given a directed graph, the Capacitated Steiner Arborescence Problem (CSAP) aims to determine the least‐cost connection from the root node to terminal nodes requiring a demand through Steiner nodes coming with a capacity, such that there is a unique path from the root to each terminal. This paper presents a new extended formulation of the CSAP,
Francesco Contu, Massimo Di Francesco, Enrico Gorgone, Ishwar Murthy   +3 more
wiley   +1 more source

Linking regional and global functional trait data: insights from mammal communities in a fragmented Atlantic Forest landscape

Oikos, EarlyView.
Accurate functional trait data are essential for understanding ecosystem services and processes in fragmented landscapes. We evaluated whether the global EltonTraits 1.0 database adequately represents the functional structure of mammal communities in forest fragments and restoration sites in a highly fragmented Atlantic Forest landscape.
Maria F. R. Godoi, Fábio Z. Farneda, Alan D. Pereira, Marcos Akira‐ Umeno, Fernanda C. Marques, Marcos Robalinho Lima   +5 more
wiley   +1 more source

On Using Cutting Planes in Pseudo-Boolean Optimization

, 2006
Cutting planes are a well-known, widely used, and very eective technique for Integer Linear Programming (ILP). However, cutting plane techniques are seldom used in Pseudo-Boolean Optimization (PBO) algorithms.
Marques-Silva, J. P., Manquinho, V., Vasco M. Manquinho, João Marques-Silva   +3 more
core  

Partial recovery of large seed arrival following ecological restoration in fragmented tropical rainforests

Oikos, EarlyView.
Forest restoration success depends crucially on the reinitiation of ecological processes such as seed arrival that drive natural regeneration. We know little about whether, by increasing and diversifying local seed sources to alleviate seed limitation, and attracting animal frugivores to alleviate dispersal limitation, restoration could shift seed ...
Aparna Krishnan, Jyotsna Nag, S. Arun, Divya Mudappa, T. R. Shankar Raman, Mahesh Sankaran, Anand M. Osuri   +6 more
wiley   +1 more source

Mixed integer programming formulations and heuristics for joint production and transportation problems.

In this thesis we consider different joint production and transportation problems. We first study the simplest two-level problem, the uncapacitated two-level production-in-series lot-sizing problem (2L-S/LS-U).
De Melo, Rafael Augusto
core  

School Disruption and Classroom Climate on Teachers’ Burnout and Wellbeing

Psychology in the Schools, EarlyView.
ABSTRACT Teachers with high levels of burnout and reduced levels of wellbeing are twice as likely to leave the teaching profession. For those that stay, it can result in strained relationships with their pupils and a difficulty to effectively manage classroom behavior.
Julia R. Badger, Andrew J. Maile, Paul Thompson, Lucy Bowes, Judy Hutchings, Matthew R. Broome   +5 more
wiley   +1 more source

From traditional practice to unsustainable exploitation: Fruit overharvesting on the endangered relict palm Jubaea chilensis

PLANTS, PEOPLE, PLANET, EarlyView.
Overharvesting of wild edible plants poses a growing threat to plant populations worldwide, particularly for slow‐growing species with limited regeneration. We quantified fruit extraction from the third‐largest known population of Jubaea chilensis—an endangered palm endemic to Chile—modeled the critical harvest threshold, and assessed consumer ...
Sebastián Cordero, Francisca Gálvez, Marisol Arriagada‐Honores, Andrés Jesús Garrido, Daniela Paredes‐Muñoz, Bastián Fuentes‐Valdés, Fernanda Torres‐Cifuentes, Francisco E. Fontúrbel   +7 more
wiley   +1 more source

Optimal Homogeneous ℒp$$ {\boldsymbol{\mathcal{L}}}_{\boldsymbol{p}} $$‐Gain Controller

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Nonlinear ℋ∞$$ {\mathscr{H}}_{\infty } $$‐controllers are designed for arbitrarily weighted, continuous homogeneous systems with a focus on systems affine in the control input. Based on the homogeneous ℒp$$ {\mathcal{L}}_p $$‐norm, the input–output behavior is quantified in terms of the homogeneous ℒp$$ {\mathcal{L}}_p $$‐gain as a ...
Daipeng Zhang, Benjamin Calmbach, Jaime A. Moreno, Johann Reger   +3 more
wiley   +1 more source

Development of a mixed binary integer programming model for nurse-patient assignment

, 2013
In every hospital, during a typical working shift, patients’ conditions are varied. Some of them only need usual care activities while others may need higher care levels. The process of nurse-patient assignment occurs at the beginning of each shift.
Shilandari, Hooman
core  

Large‐scale characterization of horizontal forest structure from remote sensing optical images

Remote Sensing in Ecology and Conservation, EarlyView.
Sub‐meter resolution remote sensing data and tree crown segmentation techniques hold promise in offering detailed information that can support the characterization of forest structure from a horizontal perspective, offering new insights in the tree crown structure at scale.
Xin Xu, Martin Brandt, Xiaowei Tong, Maurice Mugabowindekwe, Yuemin Yue, Sizhuo Li, Qiue Xu, Siyu Liu, Florian Reiner, Kelin Wang, Zhengchao Chen, Yongqing Bai, Rasmus Fensholt   +12 more
wiley   +1 more source