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914 results for “filtered”
Fig. 5 in New cranial material of the earliest filter feeding flamingo Harrisonavis croizeti (Aves, Phoenicopteridae) informs the evolution of the highly specialized filter feeding apparatus
Fig. 5 Digital reconstruction of Harrisonavis croizeti comprising newly reported material compared with the cast of the lectotype of H. croizeti. Reconstruction in left (a) and right (b) views. Cast of the lectotype skull of H. croizeti (NMNH Av 6544) (c). In addition to other characters (see text), the new upper bill is less curved compared to the previously reported and presumably adult bill, suggesting a sub-adult condition for NMB MA 9594. In the reconstruction of H. croizeti (a, b), the component fossils (indicated by specimen number and by color) have not been modified from their original scales and were fitted by eye in three- dimensional space. Some overlap occurs where the specimens pre- serve the same region of the skull. Scale bars 1 cm
Fig. 2 in Filter feeding in the mysid crustacean Limnomysis benedeni: Evidence of the maxillary pump and the ventral filtration current
Fig. 2. The maxillae of L. benedeni in their original positions (adult female, body length: 10 mm). A: ventral view after the removal of the maxillipeds. B: close-up of the filtering setae (position indicated by the rectangle in Fig. 2A). The anterior direction points toward the top of the picture.
12 Weeks of Hemodialysis With Medium Cut-Off Filter Compared to Hemodiafiltration With Standard High-flux Filter.
ClinicalTrials.gov study NCT03416192. IPD Sharing: NO. Countries: 0. Publications: 0.
Effectiveness of Carbon Filters to Reduce the Anesthetic Gas Concentration in an Anesthetized Patient
ClinicalTrials.gov study NCT01624558. IPD Sharing: Not stated. Countries: 0. Publications: 0.
Protocol for Evaluation of Quarter-Time Cardiac Imaging: 5-Minutes Rest and 3-Minutes Stress Wide Beam Reconstruction (WBR) Versus Full-Time Filtered Back Projection (FBP)
ClinicalTrials.gov study NCT00661752. IPD Sharing: Not stated. Countries: 0. Publications: 0.
Comparison of the Complications in Multiple Myeloma Patients Who Received Autologous Stem Cell Transplantation Between in HEPA-filtered Room and Non-HEPA-filtered Room
ClinicalTrials.gov study NCT06286241. IPD Sharing: UNDECIDED. Countries: 0. Publications: 0.
Clinical Evaluation of Air Handling in Baby fx Oxygenator With Integrated Arterial Filter Versus Baby rx Oxygenator With Non Integrated Arterial Line Filter
ClinicalTrials.gov study NCT01296685. IPD Sharing: Not stated. Countries: 0. Publications: 0.
Using a Novel Algorithm to Improve the Retrieval Rate of Inferior Vena Cava Filters (iRetrieve Study)
ClinicalTrials.gov study NCT02160964. IPD Sharing: Not stated. Countries: 0. Publications: 0.
Ultrasound-Guided Microbubble Removal and Filter Lifespan During CRRT: A Pilot Crossover Study
ClinicalTrials.gov study NCT07005531. IPD Sharing: NO. Countries: 0. Publications: 0.
Study Comparing the Kinetics of Endothelial Cell Loss Associated With the XEN® Implant Versus Traditional Filtering Surgery for Glaucoma
ClinicalTrials.gov study NCT04781283. IPD Sharing: Not stated. Countries: 0. Publications: 0.
Post-Operative Sub-Tenon Kenalog in Glaucoma Filtering Surgery
ClinicalTrials.gov study NCT00238563. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Modeling Li-ion Battery Capacity Depletion in a Particle Filtering Framework
This paper presents an empirical model to describe battery behavior during individual discharge cycles as well as over its cycle life. The basis for the form of the model has been linked to the internal processes of the battery and validated using experimental data. Subsequently, the model has been used in a Particle Filtering framework to make predictions of remaining useful life for individual discharge cycles as well as for cycle life. The prediction performance was found to be satisfactory as measured by performance metrics customized for prognostics. The work presented here provides initial steps towards a comprehensive health management solution for energy storage devices.*
Draft Genome Sequence of Solibacillus kalamii, Isolated from an Air Filter Aboard the International Space Station
Solibacillus kalamii was isolated from a HEPA filter in the International Space Station. This strain was of particular interest due to the unique environment in which it was isolated from.
Advances in Uncertainty Representation and Management for Particle Filtering Applied to Prognostics
Particle filters (PF) have been established as the de facto state of the art in failure prognosis. They combine advantages of the rigors of Bayesian estimation to nonlinear prediction while also providing uncertainty estimates with a given solution. Within the context of particle filters, this paper introduces several novel methods for uncertainty representations and uncertainty management. The prediction uncertainty is modeled via a rescaled Epanechnikov kernel and is assisted with resampling techniques and regularization algorithms. Uncertainty management is accomplished through parametric adjustments in a feedback correction loop of the state model and its noise distributions. The correction loop provides the mechanism to incorporate information that can improve solution accuracy and reduce uncertainty bounds. In addition, this approach results in reduction in computational burden. The scheme is illustrated with real vibration feature data from a fatigue-driven fault in a critical aircraft component.
Tracking Filters for Estimation of Jet Engine Deterioration
This presentation will review the use of knowledge management in the development and support of Condition Based Maintenance (CBM) systems for complex systems with particular emphasis on the experience of the development of the Fault Model for large commercial aircraft. The presentation is divided into four sections: 1. Review of experience of building fault models and Central Maintenance Computer for large commercial aircraft. 2. Review of the key functions and usage scenarios for a typical CBM Knowledge Management System 3. Identification of criteria for evaluation of implementation alternatives The presentation will conclude with a short discussion of future directions for CBM Knowledge Management Systems. **Speaker: Tim Felke, Honeywell** Tim Felke joined Honeywell in 1984 as a control systems analyst and was the manager for their Systems Analysis and Engineering Sciences department for several years. He was a principle author of the proposal for the Central Maintenance Computer for the Boeing 777 and then was a leader in its development. Since then he has been an Engineering Fellow for the diagnostic and knowledge management functions of the Aircraft Diagnostic and Maintenance Systems group. In this work he has published several papers and is the principle inventor or significant contributor on nearly a dozen patents. He holds a BS in Electrical Engineering from Arizona State University.
Model-based Prognostics with Fixed-lag Particle Filters
Model-based prognostics exploits domain knowl- edge of the system, its components, and how they fail by casting the underlying physical phenom- ena in a physics-based model that is derived from first principles. In most applications, uncertain- ties from a number of sources cause the predic- tions to be inaccurate and imprecise even with accurate models. Therefore, algorithms are em- ployed that help in managing these uncertainties. Particle filters have become a popular choice to solve this problem due to their wide applicability and ease of implementation. We present a gen- eral model-based prognostics methodology using particle filters. In order to provide more accu- rate and precise estimates, and, therefore, more accurate and precise predictions, we investigate the use of fixed-lag filters. We develop a detailed physics-based model of a pneumatic valve, and perform comprehensive simulation experiments to illustrate our prognostics approach. The exper- iments demonstrate the advantages that fixed-lag filters may provide in the context of prognostics, as measured by prognostics performance metrics.
IHW COMET HALLEY INFRARED FILTER SETS, V2.0
This data set contains filter set parameters for all IR filters referenced in any of the data sets archived by the International Halley Watch (IHW) Infrared Studies Network (IRSN).
SAR Image Enhancement using Particle Filters
In this paper, we propose a novel approach to reduce the noise in Synthetic Aperture Radar (SAR) images using particle filters. Interpretation of SAR images is a difficult problem, since they are contaminated with a multiplicative noise, which is known as the “Speckle Noise”. In literature, the general approach for removing the speckle is to use the local statistics, which are computed in a square window. Here, we propose to use particle filters, which is a sequential Bayesian technique. The proposed method also uses the local statistics to denoise the images. Since this is a Bayesian approach, the computed statistics of the window can be exploited as a priori information. Moreover, particle filters are sequential methods, which are more appropriate to handle the heterogeneous structure of the image. Computer simulations show that the proposed method provides better edge-preserving results with satisfactory speckle removal, when compared to the results obtained by Gamma Maximum a posteriori (MAP) filter.
EIGHT COLOR ASTEROID SURVEY FILTER CURVES V1.0
The Eight Color Asteroid Survey provides reflectance spectra for minor planets in eight filter passbands. This dataset contains the response curves of the eight filters used in the survey, as well as the response curves of the dichroic beam splitter. The wavelength range covered is from .29 to 1.1 micrometers, with a .005 wavelength interval.
Uncertainty Representation and Interpretation in Model-based Prognostics Algorithms based on Kalman Filter Estimation
This article discusses several aspects of uncertainty represen- tation and management for model-based prognostics method- ologies based on our experience with Kalman Filters when applied to prognostics for electronics components. In par- ticular, it explores the implications of modeling remaining useful life prediction as a stochastic process and how it re- lates to uncertainty representation, management, and the role of prognostics in decision-making. A distinction between the interpretations of estimated remaining useful life probability density function and the true remaining useful life probabil- ity density function is explained and a cautionary argument is provided against mixing interpretations for the two while considering prognostics in making critical decisions.
ScienceDex guides
Understand access before you commit
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.