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11 results for “self-similarity”
Self-similarity, density-size dynamics and the sinking speed of marine aggregates.
<p>A collated and referenced data base of observed size and sinking speeds of marine particle aggregates including Reynolds number and estimated excess density.</p>
Supplemental Data for "Self-similarity of spectral response functions for fractional quantum Hall states"
<p>Scripts and data to supplement the paper "Self-similarity of spectral response functions for fractional quantum Hall states".</p>
Data from: Maximum mutational robustness in genotype-phenotype maps follows a self-similar blancmange-like curve
<div class="section abstract"> <p>Phenotype robustness, defined as the average mutational robustness of all the genotypes that map to a given phenotype, plays a key role in facilitating neutral exploration of novel phenotypic variation by an evolving population. By applying results from coding theory, we prove that the maximum phenotype robustness occurs when genotypes are organised as bricklayer's graphs, so called because they resemble the way in which a bricklayer would fill in a Hamming graph. The value of the maximal robustness is given by a fractal continuous everywhere but differentiable nowhere sums-of-digits function from number theory. Interestingly, genotype-phenotype (GP) maps for RNA secondary structure and the HP model for protein folding can exhibit phenotype robustness that exactly attains this upper bound. By exploiting properties of the sums-of-digits function, we prove a lower bound on the deviation of the maximum robustness of phenotypes with multiple neutral components from the bricklayer's graph bound, and show that RNA secondary structure phenotypes obey this bound. Finally, we show how robustness changes when phenotypes are coarse-grained and derive a formula and associated bounds for the transition probabilities between such phenotypes.</p> </div>
Data from: Maximum mutational robustness in genotype-phenotype maps follows a self-similar blancmange-like curve
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Self-similarity of solitary waves on inertia-dominated falling liquid films (Supporting data)
<p>This data accompanies the paper "Self-similarity of solitary waves on inertia-dominated falling liquid films", published in Physical Review E 93 (2016), 033121, DOI: 10.1103/PhysRevE.93.033121</p>
Measurement, self-similarity, and TNT equivalence of blasts from exploding wires
<p>This dataset contains raw overpressure time histories from blasts generated from exploding aluminum wires, recorded under controlled conditions at five energy levels and six standoff distances. The time histories, referenced in the accompanying study, provide detailed information about the shock wave profiles specific to aluminum-wire explosions.</p>
Data set of simulated rimed aggregates for "A riming-dependent parameterization of scattering by snowflakes using the self-similar Rayleigh-Gans approximation"
<p><strong>Simulated rimed aggregates</strong> generated with https://github.com/jleinonen/aggregation in setting "aggregation followed by riming".</p> <p>Aggregates were built from between 10 to 700 monomer crystals of <strong>columns, dendrites, needles, plates or rosettes</strong> with mean sizes of 100 or 200 micrometer. Then they were exposed to ELWP = 2.0 kg m⁻². Monomer crystals are composed of cubical elements with resolution 20 micrometer. Frozen rime droplets are also represented by 20 micrometer cubes.</p> <p>The data set contains folders with <strong>evolution (evol) and shape files for each monomer crystal type</strong>. For each particle one evolution and one corresponding shape file exists. The evolution (evol) file contains particle mass, rime mass, area, size, fall speed (Heymsfield&Westbrook, 2010), fall speed (Khvorostyanov&Curry, 2005) for each step during the aggregation and riming process. The corresponding shape file contains the x,y,z positions of the cubical elements that compose the particle for each step. <strong>For further documentation see readme.</strong></p>
Data from: A lognormal distribution of the lengths of terminal twigs on self-similar branches of elm trees
Lognormal distributions and self-similarity are characteristics associated with a wide range of biological systems. The sequential breakage model has established a link between lognormal distributions and self-similarity and has been used to explain species abundance distributions. To date, however, there has been no similar evidence in studies of multicellular organismal forms. We tested the hypotheses that the distribution of the lengths of terminal stems of Japanese elm trees (Ulmus davidiana), the end products of a self-similar branching process, approaches a lognormal distribution. We measured the length of the stem segments of three elm branches and obtained the following results: (i) each occurrence of branching caused variations or errors in the lengths of the child stems relative to their parent stems; (ii) the branches showed statistical self-similarity; the observed error distributions were similar at all scales within each branch and (iii) the multiplicative effect of these errors generated variations of the lengths of terminal twigs that were well approximated by a lognormal distribution, although some statistically significant deviations from strict lognormality were observed for one branch. Our results provide the first empirical evidence that statistical self-similarity of an organismal form generates a lognormal distribution of organ sizes.
A strong statistical link between aerosol indirect effects and the self-similarity of rainfall distributions
<p>Supporting data for "A strong statistical link between aerosol indirect effects and the self-similarity of rainfall distributions". Atmos. Chem. Phys., 22, 1–17, 2022. https://doi.org/10.5194/acp-22-1-2022.</p>
Data from: A lognormal distribution of the lengths of terminal twigs on self-similar branches of elm trees
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Geometric renormalization unravels self-similarity of the multiscale human connectome
<p>Connectomes (edge list) and their hyperbolic maps (coordinates and parameters), as well as the GR flows for 84 healthy subjects in the UL and HCP datasets used in "Geometric renormalization unravels self-similarity of the multiscale human connectome".</p> <p> </p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.