Results 61 to 70 of about 389,954 (258)

Asymptotics for the Spectrum of the Laplacian in Thin Bars with Varying Cross Sections

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT We consider spectral problems for the Laplace operator in 3D rod structures with a small cross section of diameter O(ε)$$ O\left(\varepsilon \right) $$, ε$$ \varepsilon $$ being a positive parameter. The boundary conditions are Dirichlet (Neumann, respectively) on the bases of this structure, and Neumann on the lateral boundary.
Pablo Benavent‐Ocejo   +2 more
wiley   +1 more source

Recuperación y divulgación de las memorias colectivas socioculturales del Departamento de Santander a través de filminutos históricos

open access: yesI+D Revista de Investigaciones, 2013
Esta investigación tuvo como objetivo la generación de un dispositivo tecnológico informático virtual denominado filminuto o video de corta duración, como mecanismo de divulgación y recuperación del patrimonio cultural santandereano y como medio ...
Ana Milena Valdés Peña   +2 more
doaj   +1 more source

Where Have I Seen You Before? Networks, Trust and Reciprocity as a Source of Collaboration in the Public Service

open access: yesPublic Administration and Development, EarlyView.
ABSTRACT Although some studies focus on how bureaucrats' interactions with one another affect performance, they rarely focus on why these public servants collaborate. Bureaucrats' collaboration matters because it can significantly contribute to achieving policy goals.
Nathalie Mendez
wiley   +1 more source

Reflection formulas for order derivatives of Bessel functions

open access: yes, 2018
From new integral representations of the $n$-th derivative of Bessel functions with respect to the order, we derive some reflection formulas for the first and second order derivative of $J_{\nu }\left( t\right) $ and $% Y_{\nu }\left( t\right) $ for ...
González-Santander, J. L.
core  

Africa and Brazil: Brazil’s African strategy is a quest for power, profit and sharing knowledge [PDF]

open access: yes, 2014
Sebastian Santander[1] of the University of Liege examines why Africa is such an attractive place to do business for emerging powers such as ...
Santander, Sebastian
core  

More pumas (Puma concolor) does not change perceptions: The mismatched response of ranchers to the presence of a top carnivore

open access: yesPeople and Nature, EarlyView.
Abstract Human‐wildlife conflicts (HWCs) are one of the most critical conservation challenges worldwide. Large carnivores are frequently at the centre of these conflicts because of the perceived and real threats they pose to livestock and human safety.
Esperanza C. Iranzo   +10 more
wiley   +1 more source

El sentimiento de la posguerra: la Revista de Santander y el existencialismo, 1945-1967

open access: yesEstudios de Literatura Colombiana, 2019
La Revista de Santander se constituyó en un referente intelectual del departamento de Santander desde su primera entrega en junio de 1945, pues abrió una puerta para que el pensamiento crítico fuera expresado por las letras de intelectuales tanto ...
Angie Daniela Ortega Rey   +2 more
doaj   +1 more source

Comparing combinatorial models of moduli space and their compactifications

open access: yes, 2015
In this paper we compare two combinatorial models for the moduli space of two-dimensional cobordisms: B\"odigheimer's radial slit configurations and Godin's admissible fat graphs, producing an explicit homotopy equivalence using a "critical graph" map ...
Kupers, Alexander   +1 more
core  

Superintegrability on N-dimensional spaces of constant curvature from so(N+1) and its contractions

open access: yes, 2007
The Lie-Poisson algebra so(N+1) and some of its contractions are used to construct a family of superintegrable Hamiltonians on the ND spherical, Euclidean, hyperbolic, Minkowskian and (anti-)de Sitter spaces.
A. A. Izmest’ev   +28 more
core   +1 more source

Control System for the Navigation of the Agricultural Robots: A Review

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT Control systems for the navigation of autonomous agricultural robots—particularly those operating in uneven terrain and in the presence of static or dynamic obstacles—have advanced considerably in recent years. As conventional machinery evolves toward increasingly automated systems, the design of reliable navigation controllers has become ...
Edna Carolina Moriones Polanía   +3 more
wiley   +1 more source

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