4,033 research outputs found
Visual enhancement training for baseball players
The purpose of this study was to determine if visual enhancement training is beneficial to a baseball player\u27s hitting abilities. We found that the group of players who received the visual training sessions showed a statistically significant (p\u3c.05) increase in their hitting abilities as compared to a group of players who did not receive the visual training sessions. This study shows that a generalized visual enhancement training program can help a baseball player improve his hitting abilities
Axisymmetric polydimethysiloxane microchannels for in vitro hemodynamic studies
The current microdevices used for biomedical research are often manufactured using microelectromechanical systems (MEMS) technology. Although it is possible to fabricate precise and reproducible rectangular microchannels using soft lithography techniques, this kind of geometry may not reflect the actual physiology of the microcirculation. Here, we present a simple method to fabricate circular polydimethysiloxane (PDMS) microchannels aiming to mimic an in vivo microvascular environment and suitable for state-of-the-art microscale flow visualization techniques, such as confocal µPIV/PTV. By using a confocal µPTV system individual red blood cells (RBCs) were successfully tracked trough a 75 µm circular PDMS microchannel. The results show that RBC lateral dispersion increases with the volume fraction of RBCs in the solution, i.e. with the hematocrit
Model-independent test of gravity with a network of ground-based gravitational-wave detectors
The observation of gravitational waves with a global network of
interferometric detectors such as advanced LIGO, advanced Virgo, and KAGRA will
make it possible to probe into the nature of space-time structure. Besides
Einstein's general theory of relativity, there are several theories of
gravitation that passed experimental tests so far. The gravitational-wave
observation provides a new experimental test of alternative theories of gravity
because a gravitational wave may have at most six independent modes of
polarization, of which properties and number of modes are dependent on theories
of gravity. This paper proposes a method to reconstruct the independent modes
of polarization in time-series data of an advanced detector network. Since the
method does not rely on any specific model, it gives model-independent test of
alternative theories of gravity
Skew Detection, Skew Normalization and Segmentation of Document Images using Segmented Block Code
Article信州大学工学部紀要 63: 9-18 (1988)departmental bulletin pape
Cosmological test of gravity with polarizations of stochastic gravitational waves around 0.1-1 Hz
In general relativity, a gravitational wave has two polarization modes
(tensor mode), but it could have additional polarizations (scalar and vector
modes) in the early stage of the universe, where the general relativity may not
strictly hold and/or the effect of higher-dimensional gravity may become
significant. In this paper, we discuss how to detect extra-polarization modes
of stochastic gravitational wave background (GWB), and study the separability
of each polarization using future space-based detectors such as BBO and DECIGO.
We specifically consider two plausible setups of the spacecraft constellations
consisting of two and four clusters, and estimate the sensitivity to each
polarization mode of GWBs. We find that a separate detection of each
polarization mode is rather sensitive to the geometric configuration and
distance between clusters and that the clusters should be, in general,
separated by an appropriate distance. This seriously degrades the signal
sensitivity, however, for suitable conditions, space-based detector can
separately detect scalar, vector and tensor modes of GWBs with energy density
as low as ~10^-15.Comment: 16 pages, 11 figure
Prostate-specific antigen, Gleason sum and clinical T stage for predicting the need for radionuclide bone scan for prostate cancer patients in Japan
The definitive version is available at www.blackwell-synergy.com.ArticleINTERNATIONAL JOURNAL OF UROLOGY. 12(8): 728-732 (2005)journal articl
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