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733 results for “passive”
Evaluating the impact of design decisions on passive DNS-based domain rankings: ranking files (type: web, weighting: IDENTITY, days: 7, dates: 24 August 2023-11 October 2023)
See <a href="https://domain-ranking-design-decisions.distrinet-research.be/">https://domain-ranking-design-decisions.distrinet-research.be/</a> for a full project description.
Evaluating the impact of design decisions on passive DNS-based domain rankings: ranking files (type: web, weighting: IDENTITY, days: 1, dates: 17 October 2023-08 November 2023)
See <a href="https://domain-ranking-design-decisions.distrinet-research.be/">https://domain-ranking-design-decisions.distrinet-research.be/</a> for a full project description.
Evaluating the impact of design decisions on passive DNS-based domain rankings: ranking files (type: root, weighting: IDENTITY, days: 7, dates: 16 December 2023-30 December 2023)
See <a href="https://domain-ranking-design-decisions.distrinet-research.be/">https://domain-ranking-design-decisions.distrinet-research.be/</a> for a full project description.
Evaluating the impact of design decisions on passive DNS-based domain rankings: ranking files (type: root, weighting: TTLBOUNDED, days: 7, dates: 13 July 2023-28 July 2023)
See <a href="https://domain-ranking-design-decisions.distrinet-research.be/">https://domain-ranking-design-decisions.distrinet-research.be/</a> for a full project description.
Biomechanical effects of adding an articulating toe joint to a passive foot prosthesis for incline and decline walking
<p>Dataset from Teater et al. (2024) "Biomechanical effects of adding an articulating toe joint to a passive foot prosthesis for incline and decline walking," <em>PLOS ONE</em></p> <p>See ReadMe.txt for more information.</p>
A Multi-site Passive Approach for Studying the Emissions and Evolution of Smoke from Prescribed Fires
<p>The uploaded data consists of ground measurements of CO, O3, PM2.5 mass, and PM2.5 BC taken at Fort Moore, Columbus, GA, USA, during the prescribed burning seasons of 2021-2022. This data was used in a manuscript that will be submitted to ACP for review. Each Excel file includes a header that details the measurement location, instruments used, and units. The data is provided in its highest resolution and can be averaged over different durations to smooth out fluctuations and cancel noise at background levels.</p>
A comprehensive experimental analysis of the local passive response across the healthy porcine left ventricle
<p>This work provides a comprehensive characterization of porcine myocardial tissue, combining biaxial (Bx), simple triaxial shear (STS) and confined compression (CC) tests to analyze its elastic behavior under cyclic loads. We expanded this study to different zones of the ventricular free wall, providing insights into the local behavior along the longitudinal and radial coordinates. The aging impact was also assessed by comparing two age groups (4 and 8 months). Resulting data showed that the myocardium exhibits a highly nonlinear hyperelastic and incompressible behavior. We observed an anisotropy ratio of 2-2.4 between averaged peak stresses in Bx tests and 1-0.59-0.41 orthotropy ratios for normalised fiber-sheet-normal peak stresses in STS tests. We obtained a highly incompressible response, reaching volumetric pressures of 2-7 MPa for perfused tissue in CC tests, with notable differences when fluid drainage was allowed, suggesting a high permeability. Regional analysis showed reduced stiffness and anisotropy (20-25%) at the apical region compared to the medial, which we attributed to differences in the fiber field dispersion. Compressibility also increased towards the epicardium and apical regions. Regarding age-related variations, 8-month animals showed stiffer response (at least 30% increase), particularly in directions where the mechanical stress is absorbed by collagenous fibers (more than 90%), as supported by a histological analysis. Although compressibility of perfused tissue remained unchanged, permeability significantly reduced in 8-month-old animals. Our findings offer new insights into myocardial properties, emphasizing on local variations, which can help to get a more realistic understanding of cardiac mechanics in this common animal model.</p>
In vivo intracellular recording in the mouse V1 during passive visual stimulations and audiovisual discrimination task
<p>Whole cell recordings (Vm channel) performed in the layer 2/3 primary visual cortex (V1) of awake mice. Recordings are performed in current clamp (Im channel). A local ECoG was placed on the dura in the vincinity of the recorded neuron. Vistim channels indicate the orientation of the drifting grating (Vistim 1 frequency), contrast (Vistim 1 amplitude), temporal frequency (Vistim 2 frequency), and spatial frquency (Vistim 2 amplitude). The diode signal indicates the exact timing of the stimulus presentation. The two mouse channels (Mouse1 adn Mouse2) indicate the movement of the spherical treadmill on which the animal is standing. In the behavior database, the mice are performing a behavioral task (additional information can be found in those files: licking channel, auditory channel (one of two tones) reward (laser channel)). The script and the data are using an Igor Pro format. For converting the two mouse signals into locomotion, please refer to the script AnalysisMouseWaveProc.ipf or the functions imbeded in LoadExperiments 2013.ipf . Those data have been used for the article Einstein et al., 2017 (https://doi.org/10.1523/JNEUROSCI.3868-16.2017). The excel sheet provides additional information about the recording. If you want to open the ibw files directly in Matlab, use IBWread, m file</p> <p> </p>
Dataset: Forced subduction at passive margin
<p>This dataset contains simulation results used for visualizing Figures in <br> “Forced subduction initiation at passive continental margins: velocity-driven versus stress-driven”</p>
Seismic dataset in "Source-Independent Passive Seismic Reverse-time Structure Imaging with Grouping Imaging Condition: Method and Application to Microseismic Events Induced by Hydraulic Fracturing"
<p>This dataset contains the seismic data and the velocity model used in the manuscript entitled "Source-Independent Passive Seismic Reverse-time Structure Imaging with Grouping Imaging Condition: Method and Application to Microseismic Events Induced by Hydraulic Fracturing" submitted to Journal of Geophysical Research-Solid Earth.</p>
XPS investigation of Co-Ni oxidized compounds surface using peak on satellites ratio. Application to Co20Ni80 passive layer structure and composition.
<p>The .xls files contain the data of the Ni2p and Co2p spectra recorded on the spontaneously oxidized alloy sample, during sputtering.</p>
PLATE 1 in Coprophilous ascomycetes with passive ascospore liberation from Brazil
PLATE 1. Coprophilous ascomycetes with passive ascospore liberation recorded in Brazil. Corynascus sepedonium 1. Ascoma, 2. peridium, 3. ascospores and 4. conidium. Kernia nitida 5. Ascoma on dung and 6. hair tip. Leuconeurospora pulcherrima 7. Ascoma, 8. peridium and 9. ascospores. Lophotrichus bartlettii 10. Ascoma on dung, 11. mounted and 12. asci. Melanospora damnosa 13. Ascoma on dung and 14. mounted. M. zamiae 15. Ascoma in mounting and 16. ascospores. Monascus ruber 17. Ascoma in mounting. Mycoarachis inversa 18. Ascoma on incubation paper and 19. mounted, 20. asci and 21. ascospores. Pseudoallescheria boydii 22. Ascoma in mounting, 23. ascus and 24. mature ascospores. Thielavia terrestris 25. Ascomata on dung. 26. mature ascospores. Tripterosporella pakistani 27. Ascoma in mounting, 28. ascus and 29. mature ascospore. Zopfiella erostrata 30. Cleistothecium in mounting. Z. longicaudata 31. Cleistothecium in mounting. Scale bars: 1, 6, 9, 16, 17=10 μm. 2, 21= 2.5 μm. 3, 4, 20, 22, 23, 24, 26= 5 μm. 5=200 μm. 7, 11, 14=50 μm. 8, 12, 13= 20 μm. 15, 18=100 μm. 19=25 μm. 10, 25= 300 μm. Figure: R.F.R. Melo.
Passivating polysilicon recombination junctions for crystalline silicon solar cells
<p>Data underlying the publication</p>
Digital holographic microscope recordings of passive motion of small particles
<p>Digital holographic microscopy provides the ability to observe throughout a volume that is large compared to its resolution without the need to actively refocus to capture the entire volume. This enables simultaneous observations of large numbers of small objects within such a volume. We have constructed a microscope that can observe a volume of 0.4 x 0.4 x 1.0 µm with submicrometer resolution (in xy) and 2 µm resolution (in z) for observation of microorganisms and minerals in liquid environments on Earth and on potential planetary missions. Because environmental samples are likely to contain mixtures of inorganics and microorganisms of comparable sizes near the resolution limit of the instrument, discrimination between living and non-living objects may be difficult. The active motion of motile organisms can be used to readily distinguish them from non-motile objects (live or inorganic), but additional methods are required to distinguish non-motile organisms and inorganic objects that are of comparable size but different composition and structure. We demonstrate the use of passive motion to make this discrimination by evaluating diffusion and buoyancy characteristics of cells, styrene beads, alumina particles, and gas-filled vesicles of micron scale in the field of view.</p>
Unaltered soil microbial community composition, but decreased metabolic activity in a semi-arid grassland after two years of passive experimental warming
<p>Soil microbial communities regulate soil carbon feedbacks to climate warming through microbial respiration (i.e. metabolic rate). A thorough understanding of the responses of composition, biomass and metabolic rate of soil microbial community to warming is crucial to predict soil carbon stocks in a future warmer climate. Therefore, we conducted a field manipulative experiment in a semi-arid grassland on the Loess Plateau of China to evaluate the responses of the soil microbial community to increased temperature from April 2015 to December 2017. Soil temperature was 2.0 <sup>o</sup>C higher relative to the ambient when open-top chambers (OTCs) were used. Warming did not affect microbial biomass or the composition of microbial functional groups. However, warming significantly decreased microbial respiration, directly resulting from soil pH decrease driven by the co-mediation of aboveground biomass increase, inorganic nitrogen increase and moisture decrease. These findings highlight that the soil microbial community structure of semi-arid grasslands resisted the short-term warming by 2 <sup>o</sup>C, although its metabolic rate declined.</p>
Passive acoustic records of Lake Sturgeon calling activity in Detroit River
<p>Lake sturgeon (<i>Acipenser fulvescens</i>) are endangered in the Laurentian Great Lakes with increasing binational efforts to establish spawning grounds to aid restoration. While SCUBA surveys can document spawning activity, these are labour-intensive and may disrupt spawning. We used passive acoustic monitoring to quantify spawning sounds of lake sturgeon as a first step to developing remote sensing of sturgeon spawning grounds. <i>Acipenser</i> sp. are known to make a variety of sounds including, "thunders" (aka drums), which have been documented in <i>A. fulvescens</i> during spawning. We quantified drums from a known spawning bed. We recorded 5 different potential sturgeon sounds but only quantified drums as a marker for spawning activity. Drums were low frequency with average frequency peaks at 40 and 92 Hz and a rapid drop-off thereafter. There was no relationship between calling activity and water temperature but calling activity increased as the summer progressed. Call production was most active from 0600-1500h with little calling activity during nighttime recordings. The presence of low frequency boat sounds did correlate with a reduction in maximum calling rate so it is possible that commercial shipping may disrupt sturgeon communication, but more research is necessary to separate correlational from causative effects. These recordings represent a promising approach to map sturgeon spawning activity and show the potential effect of human activity on communication in this threatened species.</p>
Behavioral responses in an object segmentation task and neural responses during passive viewing
<p>The rodent visual system has attracted great interest in recent years due to its experimental tractability, but the fundamental mechanisms used by the mouse to represent the visual world remain unclear. In the primate, researchers have argued from both behavioral and neural evidence that a key step in visual representation is "figure-ground segmentation," the delineation of figures as distinct from backgrounds [<a href="https://www.biorxiv.org/content/10.1101/2021.07.04.451059v1#ref-1">1</a>–<a href="https://www.biorxiv.org/content/10.1101/2021.07.04.451059v1#ref-4">4</a>]. To determine if mice also show behavioral and neural signatures of figure-ground segmentation, we trained mice on a figure-ground segmentation task where figures were defined by gratings and naturalistic textures moving counterphase to the background. Unlike primates, mice were severely limited in their ability to segment figure from ground using the opponent motion cue, with segmentation behavior strongly dependent on the specific carrier pattern. Remarkably, when mice were forced to localize naturalistic patterns defined by opponent motion, they adopted a strategy of brute force memorization of texture patterns. In contrast, primates, including humans, macaques, and mouse lemurs, could readily segment figures independent of carrier pattern using the opponent motion cue. Consistent with mouse behavior, neural responses to the same stimuli recorded in mouse visual areas V1, RL, and LM also did not support texture-invariant segmentation of figures using opponent motion. Modeling revealed that the texture dependence of both the mouse's behavior and neural responses could be explained by a feedforward neural network lacking explicit segmentation capabilities. These findings reveal a fundamental limitation in the ability of mice to segment visual objects compared to primates.</p>
Dataset for Multi-Task Learning for Simultaneous Retrievals of Passive Microwave Precipitation Estimates and Rain/No-Rain Classification
<p>Dataset for Multi-Task Learning for "Simultaneous Retrievals of Passive Microwave Precipitation Estimates and Rain/No-Rain Classification".</p> <p>Global Precipitation Measurement (GPM) dual-frequency precipitation radar (DPR) and Goddard Profiling Algorithm (GPROF) were provided from NASA Global Precipitation Measurement Precipitation Data Directory (https://gpm.nasa.gov/data/directory). The original data used for this study have been supplied by JAXA’s GSMaP.</p> <p>The source code for preprocessing and model training is available at https://doi.org/10.5281/zenodo.7627112</p>
A_Dataset for Multi-Task Learning for Simultaneous Retrievals of Passive Microwave Precipitation Estimates and Rain/No-Rain Classification
<p>Dataset for Multi-Task Learning for "Simultaneous Retrievals of Passive Microwave Precipitation Estimates and Rain/No-Rain Classification".</p> <p>Global Precipitation Measurement (GPM) dual-frequency precipitation radar (DPR) and Goddard Profiling Algorithm (GPROF) were provided from NASA Global Precipitation Measurement Precipitation Data Directory (https://gpm.nasa.gov/data/directory). The original data used for this study have been supplied by JAXA’s GSMaP.</p> <p>The source code for preprocessing and model training is available at https://doi.org/10.5281/zenodo.7627112.</p>
qPCR data for "An innovative passive sampling approach for the detection of cyanobacterial gene targets in freshwater sources"
<p>qPCR data to accompany the manuscript "An innovative passive sampling approach for the detection of cyanobacterial gene targets in freshwater sources"</p>
ScienceDex guides
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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.