Results 151 to 160 of about 22,833 (190)

DISPERSAL LIMITATION AND PATCH OCCUPANCY IN FOREST HERBS

Ecology, 2000
The distribution of species depends on the availability of suitable habitats, the capacity to disperse to these habitats, and the capacity of populations to persist after establishment.
Johan Ehrlen, Ove Eriksson
exaly   +2 more sources

Plant Attributes that Drive Dispersal and Establishment Limitation in Tropical Agricultural Landscapes

Forests, 2018
Factors that influence tropical-forest regeneration have been of interest across the tropics. We tested the degree of dispersal and establishment limitation of pioneer and non-pioneer tree species with different dispersal modes and seed sizes, using data
Cristina Martínez-Garza, Henry F Howe, Howe Henry F   +2 more
exaly   +2 more sources

Environmental filtering affects soil fungal community composition more than dispersal limitation at regional scales [PDF]

Fungal Ecology, 2014
The relative importance of dispersal limitation versus environmental filtering for community assembly has received much attention for macroorganisms. These processes have only recently been examined in microbial communities.
Stephanie N Kivlin, Michael L Goulden, Kathleen K Treseder   +2 more
exaly   +2 more sources

QUANTIFYING DISPERSAL AND ESTABLISHMENT LIMITATION IN A POPULATION OF AN EPIPHYTIC LICHEN [PDF]

Ecology, 2006
Dispersal is a process critical for the dynamics and persistence of metapopulations, but it is difficult to quantify. It has been suggested that the old-forest lichen Lobaria pulmonaria is limited by insufficient dispersal ability.
Silke Werth, Hélène H Wagner, Felix Gugerli   +2 more
exaly   +2 more sources

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Linear Dispersion Codes with Limited Feedback

IEICE Transactions on Communications, 2007
LDCs system with finite-rate error-free feedback is proposed in this letter. The optimal transmission codeword is selected at the receiver and the codeword index is sent to the transmitter. A simple random search algorithm is introduced for codebook generation. Moreover, the max-min singular value criterion is adopted for codeword selection. Simulation
Dan Deng, Jinkang Zhu, Ling Qiu
openaire   +1 more source

Limit Theorems for Dispersing Billiards with Cusps

Communications in Mathematical Physics, 2011
This paper investigates certain probability limit theorems for dispersing billiards with cusps. Since these systems enjoy only polynomial decay of correlations of order \(1/n\), they exhibit weak and delicate statistical properties. The authors first prove the central limit theorem (CLT) for dynamical systems under fairly general conditions and then ...
Bálint, P., Chernov, N., Dolgopyat, D.
openaire   +2 more sources

Compression Limit by Third-Order Dispersion in the Normal Dispersion Regime

IEEE Photonics Technology Letters, 2006
Preprint: Weierstraß-Institut für Angewandte Analysis und Stochastik, vol ...
Demircan, Ayhan, Kroh, Marcel, Bandelow, Uwe, Hüttl, Bernd, Weber, Hans-Georg   +4 more
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Error Limits in Dispersion Analysis

Optical Interference Coatings, 1997
There is a wide variety of methods for determination of the optical functions N(λ)=n(λ)+ik(λ) or ε(w)=ε1(ω)+iε2(ω), often named "constants", from experimental measurements.1 The methods can be split into two main categories a) One measurement over an extended wavelength range and b) two (or more) measurements at a single wavelength.
Carl G. Ribbing, Andreas Malmport
openaire   +1 more source

Theoretical Limits for the Dispersion Limited Optical Channel

2006
In this paper, we study the theoretical limits of optical communication channels affected by chromatic dispersion. By using as a metric the energy transfer ratio, we find the optimal transmitted pulse shape that allows minimizing the impact of dispersion, together with an interesting definition of the dispersive channel equivalent bandwidth. This paper,
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Limitations to dispersion relations

Annals of Physics, 1960
Abstract We attempt to understand the limitations to the validity of dispersion relations by considering fourth-order terms for elastic scattering in perturbation theory. For the exchange scattering of equal mass, scalar, neutral bosons, we obtain Δ max 2 = 2 m 2 for the limit of the validity of the general proof, but closer inspection shows ...
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