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232 results for “time measurement”
Data from: Accelerometers can measure total and activity-specific energy expenditure in free-ranging marine mammals only if linked to time-activity budgets
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No consistent effect of daytime versus night-time measurement of thermal tolerance in nocturnal and diurnal lizards
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Automating the interpretation of PM2.5 time-resolved measurements using a data-driven approach
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Acoustic Doppler Profiler (ADP) Time Series Measurements at Hog Island Bay at the Virginia Coast Reserve 2002-2004
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Longwave measurements of phase and amplitude for five european time transmitters
<p>Data from continuous measurements of amplitude af phase of the carrier signal for five european time transmitters during the full years of 2018 and 2019.</p> <p>For each year there are four files</p> <ul> <li>raw dataset - these are the originally recorded data (tar.gz)</li> <li>converted dataset - more compact with redundancy removed (tar.gz)</li> <li>filelist raw - a list of the filenames in the raw dataset (ascii)</li> <li>filelist converted - list of filenames in the converted dataset (ascii)</li> </ul>
High-resolution time series of leaf length and leaf thickness of strawberry and tomato measured in a growth chamber
<p>This dataset captures leaf thickness and leaf length of two strawberry plants and one tomato seeding. Leaf thickness measurements are only available of the strawberry plants. Additional data included light intensity data, soil water content (of one plant), relative humidity and temperature data. All sensors were read every second over a period of two weeks.</p>
A review of response rates over time in registry-based studies using patient-reported outcome measures
<p class="Brdtekst1"><b>Objectives</b>: Gain an overview of expected response rates (RRs) to patient-reported outcome measures (PROMs) in clinical quality registry-based studies and long-term cohorts in order to better evaluate the validity of registries and registry-based studies. Examine the trends of RRs over time and how they vary with study type, questionnaire format, and the use of reminders.</p> <p class="Brdtekst1"><b>Design</b>: Literature review with systematic search.</p> <p class="Brdtekst1"><b>Data</b> <b>sources</b>: PubMed, MEDLINE, EMBASE, kvalitetsregistre.no, kvalitetsregister.se, and sundhed.dk.</p> <p class="Brdtekst1"><b>Eligibility criteria</b>: Articles in all areas of medical research using registry-based data or cohort design with at least two follow-up time-points collecting PROMs and reporting RRs. Annual reports of registries including PROMs that report RRs for at least two time-points.</p> <p class="Brdtekst1"><b>Primary outcome measure</b>: Response rates to PROMs.</p> <p class="Brdtekst1"><b>Results</b>: A total of 10 articles, 12 registry reports, and 6 registry articles were included in the review. The overall RR at baseline was 75% ±22.1 but decreased over time. Cohort studies had a markedly better RR (baseline 97% ±4.7) compared to registry-based data at all time points (baseline 72% ±21.8). For questionnaire formats, paper had the highest RR at 86% ±19.4, a mix of electronic and paper had the second highest at 71% ±15.1, and the electronic-only format had a substantially lower RR at 42% ±8.7. Sending one reminder (82% ±16.5) or more than one reminder (76% ±20.9) to non-responders resulted in a higher RR than sending no reminders (39% ±6.7).</p> <p class="Brdtekst1"><b>Conclusions</b>: The large variation and downward trend of RRs to PROMs in cohort and registry-based studies are of concern and should be assessed and addressed when using registry data in both research and clinical practice.</p>
A time-series of strains in response to wind measured on 19 trees in Danum Valley, Malaysia
<p>Strain data measured on the trunks of 19 trees in the Danum Valley, Malaysia. It also contains wind speed data measured using anemometers attached to emergent trees nearby. This data can be used to extract the fundamental swaying frequencies of these trees, and to quantify the relationship between wind speed and bending strain and so estimate wind damage risk. This data would be useful for anyone studying the interaction between wind and trees. The tallest tree in this data set is approximately 51 m tall. The nearby field centre is located at (4°57'53.0"N 117°48'18.3"E) and the measured trees are part of the 50ha Smithsonian plot and the 1ha intensive carbon monitoring plot 1. </p>
Data from: Measurement of infection efficiency of a major wheat pathogen using time-resolved imaging of disease progress
Infection efficiency is a key epidemiological parameter that determines the proportion of pathogen spores able to infect and cause lesions once they have landed on a susceptible plant tissue. In this study, we present an improved method to measure infection efficiency of Zymoseptoria tritici using a replicated greenhouse experiment. Z. tritici is a fungal pathogen that infects wheat leaves and causes Septoria tritici blotch (STB), a major disease of wheat worldwide. We devised an original experimental setup, where we (i) attached living wheat leaves to metal plates allowing for time‐resolved imaging of disease progress in planta. Since lesions were continuously appearing, expanding and merging during the period of up to three weeks, daily measurements were necessary for accurate counting of lesions. We also (ii) used reference membranes to characterize the density and the spatial distribution of inoculated spores on leaf surfaces. In this way, we captured the relationship between the number of lesions and the number of viable spores deposited on the leaves and estimated the infection efficiency of about 4% from the slope of this relationship. Our study provides a proof of principle for an accurate and reliable measurement of infection efficiency of Z. tritici. The method opens opportunities for determining the genetic basis of the component of quantitative resistance that suppresses infection efficiency. This knowledge would improve breeding for quantitative resistance against STB, a control measure considered more durable than deployment of major resistance genes.
Simulation and experimental data of frequency domain and time domain optical signal measurements for optical network digital twins
<p>The dataset contains IQ optical constellation samples for 16-QAM optical connections. Data have been generated both experimentally and through simulations with a MATLAB-based simulator. Different configurations have been simulated: 62 lightpaths having a different number of spans and links and 4 soft-failures affecting a lightpath with increasing failure magnitude.</p>
Design of a custom-made device for real-time optical measurement of differential mineral concentrations in 3D scaffolds for bone tissue engineering
<p>Monitoring bone tissue engineered constructs during their maturation is important to ensure the quality of applied protocols. Several destructive, mainly histochemical, methods are conventionally used to this aim, requiring the sacrifice of the investigated samples. This implies i) to plan several scaffold replicates, ii) expensive and time consuming procedures and iii) to infer the maturity level of a given tissue construct from a cognate replica. To solve these issues, non-destructive techniques such as light spectroscopy-based methods have been reported to be useful. Here, a miniaturized and inexpensive custom-made spectrometer device is proposed to enable the non-destructive analysis of hydrogel scaffolds. Testing involved samples with a differential amount of calcium salt. When compared to a reference standard device, the custom-made spectrometer demonstrates the ability to perform measurements without requiring elaborate sample preparation and/or a complex instrumentation. This preliminary study shows the feasibility of light spectroscopy-based methods as useful for the non-destructive analysis of tissue engineered constructs. Based on these results the custom-made spectrometer device appears as a useful option to perform real-time/in-line analysis. Finally, the device can be considered as a component that can be easily integrated on board of recently prototyped bioreactor systems, for the monitoring of the tissue engineered constructs during their conditioning.</p>
F-statistics and ICC measures for testing agreement in DNA methylation across batches, tissues and time
<p>These are the datasets related to the submitted paper: <em>Agreement in DNA methylation levels from the Illumina 450K array, across batches, tissues and time.</em></p> <p>The raw methylation measures are not available due to patient confidentiality. However, we provide the F-statistics and the ICC measures for different subgroupings, and for both datasets. </p>
RESTORATION AND ANALYSIS OF ENGLISH TRANSLATIONS OF LEXEMAS OF MEASUREMENT OF TIME UNITS IN "BOBURNOMA"
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Sources and meteorology influencing highly-time resolved PM2.5 trace elements at 3 urban sites in extremely polluted Indo Gangetic Plain in India, Measurement_Report_Data_21-06-2024
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Рис. 6. Суточный бюΑжет времени основных виΑов ΑеятеΛьности поΑземной поΛевки (на примере активности ♂ № 4; июΛь 2000 г., манеж БиНИИ) Fig. 6. Daily time budget of the main activities of the common pine vole. (on the example of the activity of ♂ No. 4; July 2000, measured in a pen at the Scientific Research Institute of Biology) in Spatial Organization Of Common Pine Vole (Microtus Subterraneus Selys-Longchamps, 1836) Colonies
Рис. 6. Суточный бюΑжет времени основных виΑов ΑеятеΛьности поΑземной поΛевки (на примере активности ♂ № 4; июΛь 2000 г., манеж БиНИИ) Fig. 6. Daily time budget of the main activities of the common pine vole. (on the example of the activity of ♂ No. 4; July 2000, measured in a pen at the Scientific Research Institute of Biology)
Time lens photon Doppler velocimetry (TL-PDV) for extreme measurements
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DATA_measure and predict the travel time reliability on the urban rail transit network
<p>(1)The automatic fare collection data recorded the time of entering and exiting stations for each trip.<br>(2)The automatic fare collection data format is CSV, and the columns of the table are in Chinese. The columns are ticket card number, ticket card type, date, time of entering the station, entering station name, time of exiting the station, exiting station name, and day of the week.</p>
Quantum information phases in space-time: measurement-induced entanglement and teleportation on a noisy quantum processor
<p>Data for the manuscript at https://arxiv.org/abs/2303.04792</p>
Fulldome video about using astronomy to measure time
<p>Fulldome video that explores the basics of using astronomy to measure time.</p> <p>Produced in collaboration with CeSDA (Italy) and NOESIS (Greece)</p>
Pre-oxygenation With Real Time End-tidal Oxygen Measurements Versus Single Breath Measurements
ClinicalTrials.gov study NCT03840486. IPD Sharing: NO. 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
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.