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500 results for “Regular”
Data from: Regular or covert sex defines two lineages and worldwide superclones within the leaf-curl plum aphid (Brachycaudus helichrysi, Kaltenbach)
Asexual reproduction occurs widely in plants and animals, particularly in insects. Aphid species usually reproduce by cyclic parthenogenesis, but many species include obligate asexual lineages. We recently showed that the leaf-curl plum aphid, Brachycaudus helichrysi, actually encompasses two lineages, B. helichrysi H1 and H2. Ecological data suggest that these lineages have different life cycles. We conducted a large population genetic study, based on 14 microsatellite loci, to infer their respective life cycles and investigate their population structure and geographic distribution. Brachycaudus helichrysi H1 displayed the genetic signature of cyclical parthenogenesis, using plum trees as primary hosts for sexual reproduction, as classically described for B. helichrysi. This global survey showed that the Central Asian population of H1 was clearly differentiated from American - European populations. By contrast, B. helichrysi H2 displayed the typical signature of obligate asexual reproduction. H2 encompassed at least eight highly successful genotypes or superclones. This lack of ability to undergo sexual reproduction was confirmed for one of the superclones by sex induction experiments. We found only one B. helichrysi H2 population that underwent sexual reproduction, which was collected from peach trees, in Northern India. Our results confirm that H1 and H2 have different life cycles. Brachycaudus helichrysi H1 is clearly heteroecious using plum trees as primary hosts while B. helichrysi H2 encompasses several anholocyclic lineages and some heteroecious populations that until now have only been found associated with peach trees as primary hosts. We discuss implications of these findings for the pest status of B. helichrysi lineages.
Regular Stylized Axe.
Just another typical Axe. Source: Objaverse 1.0 / Sketchfab
Transsaccadic perception of changes in object regularity
<p>Dataset from the following publication:<br><br>Sharvashidze, N., Valsecchi, M., & Schütz, A. C. (2024). Transsaccadic perception of changes in object regularity. Journal of Vision, 0(0):09163, 1–21, https://doi.org/10.1167/jov.0.0.09163.</p>
Resource availability and heterogeneity shape the self‐organisation of regular spatial patterning
<p>Explaining large-scale ordered patterns and their effects on ecosystem functioning is a fundamental and controversial challenge in ecology. Here, we coupled empirical and theoretical approaches to explore how competition and spatial heterogeneity govern the regularity of colony dispersion in fungus-farming termites. Individuals from different colonies fought fiercely, and inter-nest distances were greater when nests were large and resources scarce—as expected if competition is strong, large colonies require more resources, and foraging area scales with resource availability. Building these principles into a model of inter-colony competition showed that highly ordered patterns emerged under high resource availability and low resource heterogeneity. Analysis of this dynamical model provided novel insights into the mechanisms that modulate pattern regularity and the emergent effects of these patterns on system-wide productivity. Our results show how environmental context shapes pattern formation by social-insect ecosystem engineers, which offers one explanation for the marked variability observed across ecosystems.</p>
Long-term effect of regular physical activity and exercise habits in patients with early parkinson disease
<p><span><span><span><span><span><span><span><span><span><span><span>Objective: Owing to the lack of long-term observations and/or comprehensive adjustment for confounding factors, reliable conclusions regarding long-term effects of exercise and regular physical activity in Parkinson's disease (PD) have yet to be drawn. Here, using data from the Parkinson's Progression Markers Initiative study that includes longitudinal and comprehensive evaluations of many clinical parameters, we examined the long-term effects of regular physical activity and exercise habits on the course of PD. </span></span></span></span></span></span></span></span></span></span></span></p> <p><span><span><span><span><span><span><span><span><span><span><span>Methods: In this observational cohort study, we primarily used the multivariate linear mixed-effects models to analyze the interaction effects of their regular physical activity and moderate-to-vigorous exercise levels, measured through the Physical Activity Scale for the Elderly questionnaire, on the progression of clinical parameters, after adjusting for age, sex, levodopa-equivalent dose, and disease duration. We also calculated bootstrapping 95% confidence intervals (CIs), and conducted sensitivity analyses using the multiple imputation method and subgroup analyses using the propensity score matching to match for all baseline background factors. </span></span></span></span></span></span></span></span></span></span></span></p> <p><span><span><span><span><span><span><span><span><span><span><span>Results: 237 early PD patients [median (interquartile range); age, 63.0 (56.0–70.0) years; Male, 69.2%; follow-up duration, 5.0 (4.0–6.0) years] were included. Regular physical activity and moderate-to-vigorous exercise levels at the baseline did not significantly affect the subsequent clinical progression of PD. However, average regular overall physical activity levels over time were significantly associated with slower deterioration of postural and gait stability [standardized fixed-effects coefficients of the interaction term (βinteraction) = -0.10 (95% CI, -0.14 to -0.06)], activities of daily living [βinteraction = 0.08 (95% CI, 0.04 to 0.12)], and processing speed [βinteraction = 0.05 (95% CI, 0.03 to 0.08)] in PD patients. Moderate-to-vigorous exercise levels were preferentially associated with slower decline of postural and gait stability [βinteraction = -0.09 (95% CI, -0.13 to -0.05)] and work-related activity levels were primarily associated with slower deterioration of processing speed [βinteraction = 0.07 (95% CI, 0.04 to 0.09)]. Multiple imputation and propensity score matching confirmed the robustness of our results. </span></span></span></span></span></span></span></span></span></span></span></p> <p><span><span><span><span><span><span><span><span><span><span><span>Conclusions: In the long-term, the maintenance of high regular physical activity levels and exercise habits was robustly associated with better clinical course of PD, with each type of physical activity having different effects.</span></span></span></span></span></span></span></span></span></span></span></p>
Regular expression with their instances
<p>This dataset contains randomly generated regular expression along with a set of randomly instances for each regexp.</p> <p>Used to train a machine learning regexp inference model.</p> <p>Encoded using python 3.8 pickle with HIGHEST_PROTOCOL.</p>
Rigidity of 4-regular Ramanujan graphs
<p>This data set collects all 4-regular Ramanujan graphs with at most 16 vertices grouped by their rigidity properties:</p> <ul> <li>Rigid</li> <li>Non-rigid</li> <li>Globally rigid</li> <li>Rigid but not globally rigid</li> </ul> <p>All files are in Graph6 data format. If a file for a given order does not exist, there are no graphs with that order and the respective property.</p>
Distribution. Subantarctic and Antarctic waters S of, or just N of, the Antarctic Convergence, and scattered islands in this zone, mainly South Georgia. Regular haul-out areas include the Antarctic Peninsula. in Otariidae
Distribution. Subantarctic and Antarctic waters S of, or just N of, the Antarctic Convergence, and scattered islands in this zone, mainly South Georgia. Regular haul-out areas include the Antarctic Peninsula.
Data for: Regularly occurring bouts of retinal movements suggest an REM sleep–like state in jumping spiders
<p>Sleep and sleep-like states are present across the animal kingdom, with recent studies convincingly demonstrating sleep-like states in arthropods, nematodes, and even cnidarians. However, the existence of different sleep phases across taxa is as yet unclear. In particular, the study of rapid eye movement (REM) sleep is still largely centered on terrestrial vertebrates, particularly mammals and birds. The most salient indicator of REM sleep is the movement of eyes during this phase. Movable eyes, however, have evolved only in a limited number of lineages—an adaptation notably absent in insects and most terrestrial arthropods—restricting cross-species comparisons. Jumping spiders, however, possess movable retinal tubes to redirect gaze, and in newly emerged spiderlings, these movements can be directly observed through their temporarily translucent exoskeleton. Here, we report evidence for an REM sleep–like state in a terrestrial invertebrate: periodic bouts of retinal movements coupled with limb twitching and stereotyped leg curling behaviors during nocturnal resting in a jumping spider. Observed retinal movement bouts were consistent, including regular durations and intervals, with both increasing over the course of the night. That these characteristic REM sleep–like behaviors exist in a highly visual, long-diverged lineage further challenges our understanding of this sleep state. Comparisons across such long-diverged lineages likely hold important questions and answers about the visual brain as well as the origin, evolution, and function of REM sleep.</p>
Fluorescence spectroscopy data (both regular and solid phase fluorescence spectroscopy)
<p>Data attached to an Emergent Scientist type of article, produced for IDCS class.</p>
FIGURE 2 in An annotated species list of regular echinoids from Sri Lanka with notes on some rarely seen temnopleurids
FIGURE 2. Test features of Microcyphus ceylanicus (WUSL/ER/87): A, aboral view; B, oral view; C, lateral view; D, ambital ambulacrum; E, ambital interambulacrum; F, oblique view through peristome showing an auricle D and E whitened with ammonium chloride.
FIGURE 4 in An annotated species list of regular echinoids from Sri Lanka with notes on some rarely seen temnopleurids
FIGURE 4. Test features and spines of Salmacis virgulata (WUSL/ER/89): A, aboral view; B, oral view; C, ambital ambulacrum; D, ambital interambulacrum; E, ambital spines.
FIGURE 1 in An annotated species list of regular echinoids from Sri Lanka with notes on some rarely seen temnopleurids
FIGURE 1. Map of sample collection and observation sites (AH—Ahangama, BC—Batticaloa, BR—Beruwala, DI— Dickwella, GO—Godawaya, HK—Hikkaduwa, HR—Hiriketiya, KL1—Kalpitiya 1, KL2—Kalpitiya 2, KR—Kirinda, MD— Mandathiv, MN—Mannar, ML—Mulathiv, ND—Nagadeepa, NE—Negombo, NL—Nilwella, PN—Panama, PP—Point Pedro, PL—Polhena, RK—Rakawa, SL—Silavathurai, TN—Trincomalee; see Appendix 1 for more information).
FIGURE 5 in An annotated species list of regular echinoids from Sri Lanka with notes on some rarely seen temnopleurids
FIGURE 5. Test features and spines of Temnopleurus toreumaticus (WUSL/ER/95): A, aboral view (with spines); B, oral view (with spines); C, lateral view; D, adapical ambulacrum; E, adapical interambulacrum.
FIGURE 3 in An annotated species list of regular echinoids from Sri Lanka with notes on some rarely seen temnopleurids
FIGURE 3. Test features and spines of Salmacis bicolor (WUSL/ER/88): A, aboral view; B, oral view; C, lateral view; D, ambital spines.
Complementary files for Stability of classical planar dipole matter on regular and aperiodic lattices manuscript
Open the record for dataset details and reuse information.
Deliverable 1.1.1.1 BEL-Float project | Dataset containing the results of numerical simulations (motions, forces) of the operational performance analysis - Part 9: Operational and damaged scenarios in regular waves
<p>This dataset contains the results of OpenFAST simulations performed on the DeepCwind OC4 semi-submersible combined with the 5MW NREL turbine for various wind and wave conditions. The basis of the OpenFAST input files are taken from <a href="https://github.com/OpenFAST/r-test/tree/main/glue-codes/openfast/5MW_OC4Semi_WSt_WavesWN">OpenFAST r-test GitHub repository (5MW_OC4Semi_WSt_WavesWN)</a> and adapted to simulate various wind and wave conditions. The turbulent wind field as the input to the InflowWind module is generated using <a href="https://www.nrel.gov/wind/nwtc/turbsim.html">TurbSim</a>. The simulations are performed on a modified version of OpenFAST v3.5.3 to which adaptation to the code is made to extract additional Morison drag output up to 16 cylindrical members. This adapted code is <a href="https://github.com/abkpribadi/openfast/tree/Morison_additional_output">uploaded on GitHub as a branch from a forked OpenFAST repository</a>. In total there are 1152 simulation results consists of 768 irregular waves and 384 regular waves cases. The complete dataset is divided into 9 sub-datasets to which this is part number 9. A report describing this dataset is available on the BEL-Float project website: https://www.owi-lab.be/bel-float.</p>
Supplementary Data "Robustness and Generalization in Quantum Reinforcement Learning via Lipschitz Regularization"
<p>Pe-computed data for re-producing the results of "Robustness and Generalization in Quantum<br>Reinforcement Learning via Lipschitz Regularization".</p> <p>See also the GitHub repository https://github.com/nicomeyer96/regularized-qpg </p>
FIGURE 8. Grantia arctica, spicules from the fringe. A. Triactine with unproportionally large paired actines. B–C. Triactines regular. D–D3 in On some Calcaronea (Porifera: Calcarea) from the Barents Sea and adjacent Polar Basin
FIGURE 8. Grantia arctica, spicules from the fringe. A. Triactine with unproportionally large paired actines. B–C. Triactines regular. D–D3. Diactines.
FIGURE. Chamaecrista claussenii. A. Habit, note the leaves regularly distributed throughout the branches. B in Taxonomic review of Chamaecrista sect. Absus subsect. Absus ser. Paniculatae (Benth.) H.S. Irwin & Barneby (Leguminosae, Caesalpinioideae)
FIGURE. Chamaecrista claussenii. A. Habit, note the leaves regularly distributed throughout the branches. B. Portion of the stem showing the cerous main axis and the leaves in an ascending pattern. C. Panicle. D. Buds. E. Flower. F. Fruit.
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.