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19922026
most citedInvestigating the relationship between biodiversity and ecosystem multifunctionality: Challenges and solutions

947 citations

Showing 2011Show all

71 papers · 1 filter

math-ph2011

Stabilized Finite Element Method for the Radial Dirac Equation

Hasan Almanasreh, Sten Salomonson, Nils Svanstedt

A challenging difficulty in solving the radial Dirac eigenvalue problem numerically is the presence of spurious (unphysical) eigenvalues among the correct ones that are neither rel…

cond-mat.mes-hall2011★ 1 cited

Selective self-excitation of higher vibrational modes of graphene nano-ribbons and carbon nanotubes through magnetomotive instability

Anders Nordenfelt

We demonstrate theoretically the feasibility of selective self-excitation of higher-mode flexural vibrations of graphene nano-ribbons and carbon nanotubes by the means of magnetomo…

cond-mat.mes-hall2011★ 14 cited

Spin controlled nanomechanics induced by single-electron tunneling

Danko Radić, Anders Nordenfelt, Anatoli M. Kadigrobov +3

We consider dc-electronic transport through a nanowire suspended between normal- and spin-polarized metal leads in the presence of an external magnetic field. We show that magnetom…

q-bio.PE2011★ 26 cited

Metapopulation dynamics on the brink of extinction

A. Eriksson, F. Elias-Wolff, B. Mehlig

We analyse metapopulation dynamics in terms of an individual-based, stochastic model of a finite metapopulation. We suggest a new approach, using the number of patches in the popul…

cond-mat.mtrl-sci2011★ 27 cited

Temperature dependence of linewidth in nano-contact based spin torque oscillators: effect of multiple oscillatory modes

P. K. Muduli, O. G. Heinonen, Johan Åkerman

We discuss the effect of mode transitions on the current (I) and temperature (T) dependent linewidth (Δf) in nanocontact based spin torque oscillators (STOs). At constant I, Δf exh…

math.AP2011★ 6 cited

Periodic Homogenization of strongly nonlinear reaction-diffusion equations with large reaction terms

Nils Svanstedt, Jean Louis Woukeng

We study in this paper the periodic homogenization problem related to a strongly nonlinear reaction-diffusion equation. Owing to the large reaction term, the homogenized equation h…

cond-mat.mes-hall2011

Umklapp-Assisted Electron Transport Oscillations in Metal Superlattices

S. I. Kulinich, L. Y. Gorelik, S. A. Gredeskul +2

We consider a superlattice of parallel metal tunnel junctions with a spatially non-homogeneous probability for electrons to tunnel. In such structures tunneling can be accompanied…

math.NA2011★ 2 cited

Iterative methods for shifted positive definite linear systems and time discretization of the heat equation

William McLean, Vidar Thomée

In earlier work we have studied a method for discretization in time of a parabolic problem which consists in representing the exact solution as an integral in the complex plane and…

physics.med-ph2011

Magnetoencephalography based on high-Tc superconductivity: a closer look into the brain?

F. Öisjöen, J. F. Schneiderman, G. A. Figueras +5

Magnetoencephalography (MEG) enables the study of brain activity by recording the magnetic fields generated by neural currents and has become an important technique for neuroscient…

astro-ph.HE2011★ 1 cited

Radiative corrections to the neutron star mass inferred from QPO frequencies

M. A. Abramowicz, W. Kluźniak, W. Yu

The frequencies of kHz QPOs are widely interpreted as being indicative of the values of characteristic frequencies related to orbital motion around neutron stars, e.g., the radial…

math.RT2011★ 2 cited

Discrete components in restriction of unitary representations of rank one semisimple Lie groups

Genkai Zhang

We consider spherical principal series representations of the semisimple Lie group of rank one , $\mathbb K=\br, \bc, \bh$. There is a family of unitarizable…

math.PR2011★ 1 cited

Linear-fractional branching processes with countably many types

Serik Sagitov

We study multi-type Bienaymé-Galton-Watson processes with linear-fractional reproduction laws using various analytical tools like contour process, spinal representation, Perron-Fro…

quant-ph2011★ 124 cited

Entanglement of distant optomechanical systems

Chaitanya Joshi, Jonas Larson, Mats Jonson +2

We theoretically investigate the possibility to generate non-classical states of optical and mechanical modes of optical cavities, distant from each other. A setup comprised of two…

physics.data-an2011★ 7 cited

Searching for optimal variables in real multivariate stochastic data

Frank Raischel, Ana Russo, Maria Haase +2

By implementing a recent technique for the determination of stochastic eigendirections of two coupled stochastic variables, we investigate the evolution of fluctuations of NO2 conc…

math.CA2011

Heat maximal function on a Lie group of exponential growth

Peter Sjögren, Maria Vallarino

Let G be the Lie group R^2\rtimes R^+ endowed with the Riemannian symmetric space structure. Let X_0, X_1, X_2 be a distinguished basis of left-invariant vector fields of the Lie a…

physics.data-an2011★ 37 cited

Estimation of drift and diffusion functions from time series data: A maximum likelihood framework

David Kleinhans

Complex systems are characterized by a huge number of degrees of freedom often interacting in a non-linear manner. In many cases macroscopic states, however, can be characterized b…

math.NA2011★ 10 cited

Localization of Elliptic Multiscale Problems

Axel Malqvist, Daniel Peterseim

This note constructs a local generalized finite element basis for elliptic problems with heterogeneous and highly varying coefficients. The basis functions are solutions of local p…

math.AP2011★ 55 cited

Optimal Regularity for Semilinear Stochastic Partial Differential Equations with Multiplicative Noise

Raphael Kruse, Stig Larsson

This paper deals with the spatial and temporal regularity of the unique Hilbert space valued mild solution to a semilinear stochastic partial differential equation with nonlinear t…

math.PR2011★ 58 cited

Kinetic limits for pair-interaction driven master equations and biological swarm models

Eric Carlen, Pierre Degond, Bernt Wennberg

We consider a class of stochastic processes modeling binary interactions in an N-particle system. Examples of such systems can be found in the modeling of biological swarms. They l…

math.CV2011

-estimates for the -operator acting on super forms

Aron Lagerberg

In the setting of super forms developed in a previous article by the author, we introduce the notion of -Kähler metrics on . We consider existence theor…

cs.CL2011★ 7 cited

From Contracts in Structured English to CL Specifications

Seyed M. Montazeri, Nivir K. S. Roy, Gerardo Schneider

In this paper we present a framework to analyze conflicts of contracts written in structured English. A contract that has manually been rewritten in a structured English is automat…

cs.LO2011★ 3 cited

Timed Automata Semantics for Visual e-Contracts

Enrique Martínez, M. Emilia Cambronero, Gregorio Díaz +1

C-O Diagrams have been introduced as a means to have a more visual representation of electronic contracts, where it is possible to represent the obligations, permissions and prohib…

physics.chem-ph2011★ 19 cited

Collision Dynamics and Solvation of Water Molecules in a Liquid Methanol Film

Erik S. Thomson, Xiangrui Kong, Patrik U. Andersson +2

Environmental molecular beam experiments are used to examine water interactions with liquid methanol films at temperatures from 170 K to 190 K. We find that water molecules with 0.…

cond-mat.mtrl-sci2011★ 48 cited

Evaluation of New Density Functional with Account of van der Waals Forces by Use of Experimental H2 Physisorption Data on Cu(111)

Kyuho Lee, André K Kelkkanen, Kristian Berland +5

Detailed experimental data for physisorption potential-energy curves of H2 on low-indexed faces of Cu challenge theory. Recently, density-functional theory has been developed to al…