Search

Your search keyword '"Waddell J"' showing total 1,887 results
Start Over Author "Waddell J"
1,887 results on '"Waddell J"'

1. Using Sunrise to Surmise Acute Transient Patellar Dislocation.

Author

Misfeldt, M. W., Crist, J., Hund, S., Frager, L., and Waddell, J.

Subjects
PATELLA dislocation, RECEIVER operating characteristic curves
Abstract

This article, titled "Using Sunrise to Surmise Acute Transient Patellar Dislocation," discusses the use of imaging in the diagnosis of acute transient patellar dislocation (ATPD). The study aimed to determine if there is a comparative measurement on bilateral sunrise view radiographs that can help predict ATPD. The researchers conducted a retrospective chart review of two patient groups, one with ATPD diagnosed by MRI and a control group with knee injury not involving the patella or medial retinaculum. The results showed that increased medial patellofemoral angle (MPFA) measured on the affected knee compared with the unaffected knee was the most accurate predictor of ATPD. The authors conclude that sunrise view knee radiographs can help predict the diagnosis of ATPD with high specificity, prompting early MRI evaluation for definitive diagnosis and treatment planning. [Extracted from the article]

Published
2024
Full Text
View/download PDF

2. Proceedings of the 2023 Meeting of the Animal Science Modelling Group.

Author

Kebreab, E., Cant, J.P., Knapp, J.R., Souza, V.C., Bougouin, A., Archimede, H., Balehegn, M., Adegbola, A., Choi, E., Mueller, N.D., Olthof, L.A., Briggs, K.R., Bradford, B.J., Pressman, E.M., Cabezas-Garcia, E. H., Waddell, J., Hu, H., Reed, K. F., Muñoz-Tamayo, R., and Tedeschi, L. O.

Subjects
ANIMAL science, RUMEN fermentation, MILK yield, PHYSIOLOGICAL effects of cold temperatures, SCIENTIFIC models, BIOENGINEERING, METABOLIZABLE energy values
Abstract

This document contains three separate articles related to dairy cattle research. The first article explores the use of depth imaging as a noninvasive method to measure daily dry matter intake (DMI) in dairy cattle. The researchers found that depth imaging showed promise as a constant measure of DMI on an individual cow basis, potentially providing a more accurate and efficient method for monitoring feed intake. The second article compares different nutrient requirement models and their effects on dairy cattle diets and methane emissions. The study found that using the NASEM (2021) model resulted in lower methane emissions compared to the NRC (2001) model. The third article focuses on optimizing diets for automatic milking systems using mixed-integer, nonlinear programming. The study developed optimized diets that reduced cost and predicted group performance. [Extracted from the article]

Published
2024
Full Text
View/download PDF

5. A functional clustering algorithm for the analysis of dynamic network data

Author

Feldt, S., Waddell, J., Hetrick, V. L., Berke, J. D., and Zochowski, M.

Subjects
Quantitative Biology - Neurons and Cognition, Physics - Data Analysis, Statistics and Probability
Abstract

We formulate a novel technique for the detection of functional clusters in discrete event data. The advantage of this algorithm is that no prior knowledge of the number of functional groups is needed, as our procedure progressively combines data traces and derives the optimal clustering cutoff in a simple and intuitive manner through the use of surrogate data sets. In order to demonstrate the power of this algorithm to detect changes in network dynamics and connectivity, we apply it to both simulated neural spike train data and real neural data obtained from the mouse hippocampus during exploration and slow-wave sleep. Using the simulated data, we show that our algorithm performs better than existing methods. In the experimental data, we observe state-dependent clustering patterns consistent with known neurophysiological processes involved in memory consolidation., Comment: 19 pages, 7 figures, significant changes to structure of paper, added methods sections and new measures

Published
2008
Full Text
View/download PDF

8. Nanometer-Scale Metallic Grains Connected with Atomic-Scale Conductors

Author

Anaya, A., Korotkov, A. L., Bowman, M., Waddell, J., and Davidovic, D.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science
Abstract

We describe a technique for connecting a nanometer-scale gold grain to leads by atomic-scale gold point contacts. These devices differ from previous metallic quantum dots in that the conducting channels are relatively well-transmitting. We investigate the dependence of the Coulomb blockade on contact resistance. The high-resistance devices display Coulomb blockade and the low-resistance devices display a zero-bias conductance dip, both in quantitative agreement with theory. We find that in the intermediate regime, where the sample resistance is close to $h/e^2$, the I-V curve displays a Coulomb staircase with symmetric contact capacitances., Comment: Submitted to Journal of Applied Physics

Published
2002
Full Text
View/download PDF

12. Meteoritic Material Recovered from the 07 March 2018 Meteorite Fall into the Olympic Coast National Marine Sanctuary

Author

Fries, M, Waddell, J, Pugel, B, Zeigler, R, Harvey, R, Welzenbach, L, McCubbin, F, and Abell, P

Subjects
Space Sciences (General)
Abstract

On 07 March 2018 at 20:05 local time (08 March 03:05 UTC), a dramatic meteor occurred over Olympic Coast National Marine Sanctuary (OCNMS) off of the Washington state coast (“OCNMS fall”, henceforth). Data to include seismometry (from both on-shore and submarine seismometers), weather radar imagery (Figure 1), and a moored weather buoy, were used to accurately identify the fall site. The site was visited by the exploration vessel E/V Nautilus (Ocean Exploration Trust) on 01 July 2018 [1] and by the research vessel R/V Falkor (Schmidt Ocean Institute) from 03-06 June 2019. Remotely operated vehicles (ROVs) from both vessels were used to search for meteorites and sample seafloor sediments. These expeditions performed the first attempts to recover meteorites from a specific observed fall in the open ocean. Analysis of weather radar data indicates that this fall was unusually massive and featured meteorites of unusually high mechanical toughness, such that large meteorites were disproportionately produced compared to other meteorite falls (Figure 2)[2-4]. We report the recovery of many (>100) micrometeorite-sized melt spherules and other fragments, and one small (~1mm3 ) unmelted meteorite fragment identified to date. Approximately 80% of the fragments were recovered from a single sample, collected from a round pit in the seafloor sediment. Melt spherules are almost exclusively type I iron-rich spherules with little discernible oxidation. Analyses are currently underway to attempt to answer the primary science question by identifying the parent meteorite type. Also, differences in the number and nature of samples collected by Nautilus and Falkor reveal a distinct loss rate to oxidation over the 15 months following the fall that is useful to inform future recovery efforts.

Published
2020

13. Bonding Universal Dental Adhesive to Developmentally Hypomineralised Enamel.

Author

Yu-Lynn Lee, Kai Chun Li, Cynthia Kar Yung Yiu, Boyd, Dorothy H., Waddell, J. Neil, and Ekambaram, Manikandan

Abstract

Purpose: To investigate the effect of pretreatment protocols involving Papacarie Duo gel and Scotchbond Universal (SU) on the microshear bond strength (µSBS) of resin composite (RC) to hypomineralised enamel (HE). Materials and Methods: Specimens of normal enamel (NE) and HE were derived from extracted hypomineralised first permanent molars (FPMs). Based on the colour of demarcated opacities, HE specimens were classified as creamy/white (CW) or yellow/brown (YB). The specimens were randomly allocated into eight groups (n = 20). Each group involved pretreatment with Papacarie Duo gel or no pretreatment, and SU applied in etch-and-rinse (E&R) or self-etch (SE) mode. All specimens were bonded with RC and subjected to µSBS testing. Failure modes were analysed using an optical microscope and SEM. Results: Comparing NE with HE, the following factors were found to be significant (p < 0.001): type of enamel substrate, deproteinising pretreatment, and etching mode. Comparing CW HE with YB HE, a significant interaction between "deproteinising pretreatment" and "etching mode" was demonstrated (p = 0.028). When subjected to the concurrent use of Papacarie Duo gel and phosphoric acid etching, HE specimens showed a significant increase in µSBS (p < 0.001). Conclusion: Deproteinising pretreatment using Papacarie Duo gel followed by the application of SU in E&R mode led to increased µSBS of resin composite to HE. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

17. Changes in kelp forest communities off Washington, USA, during and after the 2014-2016 marine heatwave and sea star wasting syndrome

Author

Tolimieri, N, primary, Shelton, AO, additional, Samhouri, JF, additional, Harvey, CJ, additional, Feist, BE, additional, Williams, GD, additional, Andrews, KS, additional, Frick, KE, additional, Lonhart, S, additional, Sullaway, G, additional, Liu, O, additional, Berry, HD, additional, and Waddell, J, additional

Published
2023
Full Text
View/download PDF

36. The Great Lakes Runoff Intercomparison Project Phase 4: the Great Lakes (GRIP-GL)

Author

Mai, J., Shen, H. R., Tolson, B. A., Gaborit, E., Arsenault, R., Craig, J. R., Fortin, V., Fry, L. M., Gauch, M., Klotz, D., Kratzert, F., O'Brien, N., Princz, D. G., Koya, S. R., Roy, T., Seglenieks, F., Shrestha, N. K., Temgoua, A. G. T., Vionnet, V., Waddell, J. W., Mai, J., Shen, H. R., Tolson, B. A., Gaborit, E., Arsenault, R., Craig, J. R., Fortin, V., Fry, L. M., Gauch, M., Klotz, D., Kratzert, F., O'Brien, N., Princz, D. G., Koya, S. R., Roy, T., Seglenieks, F., Shrestha, N. K., Temgoua, A. G. T., Vionnet, V., and Waddell, J. W.

Abstract

Model intercomparison studies are carried out to test and compare the simulated outputs of various model setups over the same study domain. The Great Lakes region is such a domain of high public interest as it not only resembles a challenging region to model with its transboundary location, strong lake effects, and regions of strong human impact but is also one of the most densely populated areas in the USA and Canada. This study brought together a wide range of researchers setting up their models of choice in a highly standardized experimental setup using the same geophysical datasets, forcings, common routing product, and locations of performance evaluation across the 1×106 km2 study domain. The study comprises 13 models covering a wide range of model types from machine-learning-based, basin-wise, subbasin-based, and gridded models that are either locally or globally calibrated or calibrated for one of each of the six predefined regions of the watershed. Unlike most hydrologically focused model intercomparisons, this study not only compares models regarding their capability to simulate streamflow (Q) but also evaluates the quality of simulated actual evapotranspiration (AET), surface soil moisture (SSM), and snow water equivalent (SWE). The latter three outputs are compared against gridded reference datasets. The comparisons are performed in two ways – either by aggregating model outputs and the reference to basin level or by regridding all model outputs to the reference grid and comparing the model simulations at each grid-cell. The main results of this study are as follows: The comparison of models regarding streamflow reveals the superior quality of the machine-learning-based model in the performance of all experiments; even for the most challenging spatiotemporal validation, the machine learning (ML) model outperforms any other physically based model. While the locally calibrated models lead to good performance in calibration and temporal validation (even outp

Published
2022

Catalog

Books, media, physical & digital resources
See catalog results