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466 results for “contract”
Deep Learning-Based Methodology for Vulnerability Detection in Smart Contracts
<p>智能合约漏洞检测公共数据集</p>
Patterns of niche contraction identify vital refuge areas for declining mammals
<p><i>Aim</i></p> <p>Investigation of realised niche contraction in declining species can help us understand how and where threats are being either mediated or tolerated across landscapes. It also provides insights into species' sensitivity to environmental change that are unable to be identified through analysis of declines in range size or abundance alone. Here, we apply the recently proposed 'niche reduction hypothesis' to investigate relationships between trends in niche breadth and geographic distribution of declining species.</p> <p><i>Location</i></p> <p>Northern Australia</p> <p><i>Methods</i></p> <p>We compare and contrast contemporary and historical datasets to examine the relationship between extent of occurrence (EOO) and realised niche hypervolume, and investigate changes in species' utilisation of environmental space through time via generalised linear modelling and bootstrapping of historical values. We also use the 'Maxent' algorithm to create and stack contemporary and historical ecological niche models (ENMs) and identify regions where resilience to threatening processes is maximised.</p> <p><i>Results</i></p> <p>We found larger mean reductions in niche hypervolume (39%) than EOO (30.5%), with little correlation (<i>r</i> = 0.07) between the two measures, suggesting that contraction of realised niche breadth can be largely independent of reduction in EOO. We also identified a general set of environmental conditions towards which species' realised niches contracted. <a name="_Hlk40866810">Comparison of stacked ENMs allowed us to identify regions of natural refuge </a>where environmental conditions are associated with increased species resilience to threats, and conversely, regions where habitat suitability has declined.</p> <p><i>Main conclusions</i></p> <p>Examining species declines from an ecological niche perspective provides a powerful tool for understanding how environmental conditions, biotic interactions, and species traits shape responses to local and global environmental changes. Quantifying reductions in niche breadth is crucial as contraction to a narrower subset of environmental space can reduce a species' ability to tolerate other threats and potentially lower adaptive capacity and genetic diversity, increasing extinction risk.</p>
Projected climate change threatens significant range contraction of Cochemiea halei (Cactaceae), an island endemic, serpentine adapted plant species at risk of extinction
<p>Threats faced by narrowly distributed endemic plant species in the face of the Earth's sixth mass extinction and climate change exposure are especially severe for taxa on islands. We investigated the current and projected distribution and range changes of Cochemiea halei, an island endemic cactus. This taxon is of conservation concern, currently listed as vulnerable on the International Union for the Conservation of Nature Red List and as a species of special concern under Mexican federal law.</p> <p>The goals of this study are to 1). identify the correlations between climate variables and current suitable habitat for C. halei; 2). determine if the species is a serpentine endemic or has a facultative relationship with ultramafic soils; 3). predict range changes of the species based on climate change scenarios.</p> <p>Location: The island archipelago in Bahía Magdalena on the Pacific coast, Baja California Sur, Mexico.</p> <p>Main conclusions: The occurrence of the species is found to be strongly correlated with ultramafic soils. The most important climate predictor for habitat suitability is annual temperature range. The species is predicted to undergo range contractions from 21% to 53%, depending on the severity and duration of exposure to climate change. The broader implications for a wide range of narrowly adapted, threatened and endemic plant species indicate an urgent need for threat assessment based on habitat suitability and climate change modeling.</p>
Figure 2 from: Drees C, Brandmayr P, Buse J, Dieker P, Gurlich S, Habel J, Harry I, Hardtle W, Matern A, Meyer H, Pizzoloto R, Quante M, Shafer K, Schuldt A, Taboada Palomares A, Assmann T (2011) Poleward range expansion without a southern contraction in the ground beetle Agonum viridicupreum (Coleoptera, Carabidae). ZooKeys 100: 333-352. https://doi.org/10.3897/zookeys.100.1535
Figure 2 - Distribution of Agonum viridicupreum (shaded in grey) in North-West Germany with eastern parts of the Netherlands. Arrows indicate minimum range expansion in the last three decades (for explanation and records see text). Range expansion in the Netherlands indicated after Turin, pers. comm.
Figure 1 from: Drees C, Brandmayr P, Buse J, Dieker P, Gurlich S, Habel J, Harry I, Hardtle W, Matern A, Meyer H, Pizzoloto R, Quante M, Shafer K, Schuldt A, Taboada Palomares A, Assmann T (2011) Poleward range expansion without a southern contraction in the ground beetle Agonum viridicupreum (Coleoptera, Carabidae). ZooKeys 100: 333-352. https://doi.org/10.3897/zookeys.100.1535
Figure 1 - Distribution of Agonum viridicupreum (shaded in grey) and its sister taxon Agonum fulgidicolle in the western Palaearctic. Map modified after Turin et al. (2003) using information from Brandmayr et al. (2005) and personal observations. Frames indicate regions selected for more detailed analyses of records, see Figs 2 and 3.
Figure 3 from: Drees C, Brandmayr P, Buse J, Dieker P, Gurlich S, Habel J, Harry I, Hardtle W, Matern A, Meyer H, Pizzoloto R, Quante M, Shafer K, Schuldt A, Taboada Palomares A, Assmann T (2011) Poleward range expansion without a southern contraction in the ground beetle Agonum viridicupreum (Coleoptera, Carabidae). ZooKeys 100: 333-352. https://doi.org/10.3897/zookeys.100.1535
Figure 3 - Distribution of Agonum viridicupreum in Israel. The striped area indicates Mediterranean climate zone (according to Yom-Tov and Tchernov 1988). Species' records are taken from collections TAU, CAB and CWB.
Warming drives poleward range contractions of Beringian endemic plant species at high latitudes
<p><strong><span>Aim</span></strong><span>: Species are expected to disperse poleward in response to climate change. For species that are endemic to the high latitudes, this implies that many in the future would face a "no-where-to-go" situation as they are currently occupying the northernmost portion of the continent. Further, because endemism may arise from a combination of physical barriers, climate, and geological history, the persistence of many species may require spatial matching of multiple environmental factors within a limited dispersal space. Thus, it is not clear how endemic species might spatially adjust their distributions in response to climate change and whether there are future climate change refugia for these species. </span></p> <p><strong><span>Location</span></strong><span>: Northwest North America </span></p> <p><strong><span>Taxa</span></strong><span>: Plants </span></p> <p><span><strong>Time</strong> <strong>period</strong></span><span>: Current and the future (2040)</span></p> <p><strong><span>Methods</span></strong><span>: We used ensemble bioclimatic models to evaluate drivers and directional patterns of future change in the distributions of 66 North American Beringian and Amphi-Beringian species currently occurring in Alaska and the Yukon. We explored the spatial pattern of species richness, losses and climate change refugia across the region.</span></p> <p><strong><span>Results</span></strong><span>: More than 80% of the species showed northward shifts in their latitudinal centroids under intermediate warming and are expected to shift their range northward by more than 140km on average by 2040. Additionally, more than 60% were projected to experience range contractions and up to 20% of the species would have the potential to expand their ranges by more than 100%. </span></p> <p><strong><span>Main conclusions</span></strong><span>: Suitable habitat for endemic species in northwest North America is expected to decline significantly, especially for species occupying the Arctic tundra. Although the models identified several potential refugia from future climate change, especially at high latitude and elevation, whether the species would be able to colonize new habitats on their own and/or capitalize sufficiently on in situ refugia remains a pertinent conservation question. </span></p>
General Exercises With and Without TA Contraction in Patients With Nonspecific Acute LBP
ClinicalTrials.gov study NCT05838040. IPD Sharing: YES. Countries: 1. Publications: 0.
Is Non-Cardiac Chest Pain Caused by Sustained Longitudinal Smooth Muscle Contraction?
ClinicalTrials.gov study NCT01839058. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Contract-Relax (CR) Technique in the Management of Diaphragmatic Paresis After Cardiac Surgery
ClinicalTrials.gov study NCT05068219. IPD Sharing: NO. Countries: 1. Publications: 0.
Remote Magnetic Versus Manual Navigation-guided Ablation for Non-outflow Tract Premature Ventricular Contractions: a Prospective, Randomized, Controlled Trial
ClinicalTrials.gov study NCT04519112. IPD Sharing: NO. Countries: 0. Publications: 2.
Age-related Differences in Shoulder Dynamic and Isometric Contractions
ClinicalTrials.gov study NCT04706169. IPD Sharing: NO. Countries: 0. Publications: 3.
Effect of Lubiprostone on Small Bowel Contractions in Female Patients With Constipation Irritable Bowel Syndrome (C-IBS)
ClinicalTrials.gov study NCT01085643. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Muscle Contraction in Patients With Focal Hand Dystonia
ClinicalTrials.gov study NCT00376753. IPD Sharing: Not stated. Countries: 1. Publications: 3.
Premature Ventricular Contractions (PVCs) and Blood Pressure Control
ClinicalTrials.gov study NCT01833455. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Pilot Study to Evaluate a Prototype Electronic Uterine Inhibitor to Prevent Preterm Contractions
ClinicalTrials.gov study NCT00212446. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Preliminary Muscle Contraction in the Rehabilitation and Prevention of Degenerative Pain in the Locomotor System
ClinicalTrials.gov study NCT06415825. IPD Sharing: YES. Countries: 0. Publications: 3.
Accuracy and Reliability of Fetal Heart Rate and Uterine Contraction Monitoring Method
ClinicalTrials.gov study NCT01280357. IPD Sharing: Not stated. Countries: 1. Publications: 0.
The Bodily Complaints Barometer: The Impact of the Corona Measures and of Contracting a COVID-19 Infection on the Body.
ClinicalTrials.gov study NCT05638685. IPD Sharing: NO. Countries: 1. Publications: 0.
Effects of Light on Melatonin and Contractions in Pregnant Women
ClinicalTrials.gov study NCT01863446. IPD Sharing: Not stated. Countries: 1. Publications: 0.
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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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.