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Paddle

About: Paddle is a research topic. Over the lifetime, 5649 publications have been published within this topic receiving 28389 citations.


Papers
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Patent
19 Sep 1985
TL;DR: A handle for attachment to the shaft of a paddle to improve the efficiency and comfort of paddling is described in this article, where the handle has a grip portion and spaced outwardly extending arms on the grip portion.
Abstract: A handle for attachment to the shaft of a paddle to improve the efficiency and comfort of paddling The handle having a grip portion and spaced outwardly extending arms on the grip portion The arms are coupled to the paddle shaft so that the handle is swingable about the paddle shaft and positioned at an angle with respect to the longitudinal axis of the shaft

37 citations

01 Jan 2001
TL;DR: Magic Paddle is an AR interaction system including virtual object manipulations in tabletop environment that can construct a 3D scene by manipulating virtual objects with a physical paddle as if he manipulates real objects.
Abstract: In this demonstration we show a computer vision based Augmented Reality system called Magic Paddle. This system has been designed to support a Tangible Augmented Reality approach in which lessons from Tangible User Interface design are applied to the design of AR interfaces. Magic Paddle is an AR interaction system including virtual object manipulations in tabletop environment. User can construct a 3D scene by manipulating virtual objects with a physical paddle as if he manipulates real objects.

37 citations

Journal ArticleDOI
TL;DR: 8-kg paddle force achieves 95% of the overall attainable decrease in TTI when using adult defibrillation paddles placed in an anterior-apical position, with a maximum force of 12 kg if physically possible.
Abstract: In summary, 8-kg paddle force achieves 95% of the overall attainable decrease in TTI when using adult defibrillation paddles placed in an anterior-apical position. We recommend that this is the minimum force that should be applied, with a maximum force of 12 kg if physically possible.

37 citations

Journal ArticleDOI
TL;DR: TPX paddles <2.5 mm were the most ideal for ultrasound and mammogram imaging requirements and, after accounting for signal loss through the paddle, appearance of cysts was comparable to images obtained from handheld, direct contact sweeps.
Abstract: We are developing a combined digital mammography/3D ultrasound system to improve detection and/or characterization of breast lesions. Ultrasound scanning through a mammographic paddle could significantly reduce signal level, degrade beam focusing and create reverberations. Thus, appropriate paddle choice is essential for accurate sonographic lesion detection and assessment with this system. In this study, we characterized ultrasound image quality through paddles of varying materials (lexan, polyurethane, TPX, mylar) and thicknesses (0.25 to 2.5 mm). Analytical experiments focused on lexan and TPX, which preliminary results demonstrated were most competitive. Spatial and contrast resolution, side-lobe and range lobe levels, contrast and signal strength were compared with no-paddle images. When the beamforming of the system was corrected to account for imaging through the paddle, the TPX 2.5 mm paddle performed the best. Test objects imaged through this paddle demonstrated ≤ 15% reduction in spatial resolution, ≤ 7.5 dB signal loss, ≤ 3 dB contrast loss and range lobe levels ≥ 35 dB below signal maximum over 4 cm. TPX paddles rbooi@umich.edu )

37 citations

Journal ArticleDOI
TL;DR: In this article, it was shown that very low frequency fluctuations in the velocity signal from several seconds to several minutes in scale are usually observed in agitated vessels and that these fluctuations result from the abrupt replacement of the flow pattern in the vessel, even in part.
Abstract: Very low frequency fluctuations in the velocity signal from several seconds to several minutes in scale are usually observed in agitated vessels. It is shown in this work that these fluctuations result from the abrupt replacement of the flow pattern in the vessel, even in part. Pattern recognition studies of the flow in the impeller region of a paddle were carried out, using high-speed VTR. The results showed that the flow between blades is characterized into five patterns which are replaced one after another. They are classified into the discharge and the cross-pass types of flow. The latter means that flow passes between impeller blades, upwardly or downwardly. The lifetime of the discharge flow type was three times that of the cross-pass flow type. The velocity distributions of the discharge and cross-pass flow types estimated from visualized pictures were quite different from each other and were different from the average distributions obtained by LDV. When the cross-pass pattern had developed over the whole region between blades, a horizontal figure-eight pattern of flow developed in the entire vessel with abrupt reduction of the torque.

37 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20242
202364
2022146
202143
2020174
2019272