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cbulogin.et2Server is OKThe ARTable: An AR-Based Tangible User Interface System | SpringerLink
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The ARTable: An AR-Based Tangible User Interface SystemYoungmin ParkWoontack WooConference paper
Augmented Reality (AR) and Tangible User Interface (TUI) have been proven to provide intuition to human computer interface with richness of a tactile sense. Recent implementations in that field, however, have inherited a 2D Graphical User Interface (GUI) scheme and work as isolated systems. Consequently, the systems are limited in supporting intuitive interfaces and various applications. This paper presents an AR-based tangible interaction system for table-top interaction environments. A projector displays information or graphical images on the table through back-projection. Two cameras on and under the table track the tangible objects which are attached with ARToolKit markers and that are used as interaction tools. Furthermore, a Augmentation Display beside the table shows graphical objects combined with the real table. The system shares the object tracking information of the object as context through the vr-UCAM [8]. Moreover, we also present a scheme of tracking smoothing based on a tracking prediction using Kalman Filter. As an application, the ARTable is integrated with Responsive Multimedia System (RMS), a storytelling system [3,4]. The proposed system is applicable to a wide range of usages such as virtual reality and augmented reality applications.Kalman Filter Augmented Reality Virtual World Interaction Space Graphical Object
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to check access.Unable to display preview.&1.Azuma, R.: A Survey of Augmented Reality. Presence: Teleoperators and Virtual Environments 6(4), 355–385 (1997)2.Ishii, H., Ullmer, B.: Tangible Bits: Towards Seamless Interfaces between People, Bits and Atoms. In: Proceedings of ACM CHI 1997, pp. 234–241 (March 1997)3.Lee, Y., Oh, S., Woo, W.: A Context-based Storytelling with Responsive Multimedia System (RMS). In: Subsol, G. (ed.) ICVS-VirtStory 2005. LNCS, vol. 3805, pp. 12–21. Springer, Heidelberg (2005)4.Lee, Y., Kim, D., Lim, Y., Kim, K., Kim, H., Woo, W.: Dream of Mee-luck: Aspiration for a New Dawn. In: Subsol, G. (ed.) ICVS-VirtStory 2005. LNCS, vol. 3805, pp. 282–285. Springer, Heidelberg (2005)5.Rekimoto, J., Saitoh, M.: Augmented Surfaces: A Spatially Continuous Work Space for Hybrid Computing Environments. In: Proceedings of CHI 1999, pp. 378–385. ACM Press, New York (1999)6.Poupyrev, I.: Augmented Groove: Collaborative Jamming in Augmented Reality. In: ACM SIGGRAPH 2000 Conference Abstracts and Applications, p. 77 (2000)7.Oh, S., Woo, W.: Manipulating Multimedia Contents with Tangible Media Control System. In: Rauterberg, M. (ed.) ICEC 2004. LNCS, vol. 3166, pp. 57–67. Springer, Heidelberg (2004)8.Lee, Y., Oh, S., Suh, Y., Woo, W.: Developing vr-UCAM for Interaction on Distributed Virtual Environments. In: KHCI 2005, pp. 507–512 (2005)9.Welch, G., Bishop, G.: An introduction to the kalman filter. CS TR 95-041, UNC (1995)10.ARToolKit,
11.Li, B., Sezan, I.: Automatic keystone correction for smart projectors with embedded camera. In: ICIP
International Conference on Image Processing 2004, vol. 4, pp.
(October 2004)Youngmin Park1Woontack Woo11.GIST U-VR Lab.GwangjuS.KoreaFull-text links:
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Improved measurements of $D_s$ meson decay constant and branching
fractions of $D_s^+\to K^-K^+π^+$, $\bar{K}{}^0K^+$ and $ηπ^+$ decays
from Belle
Abstract: We present preliminary absolute branching fraction measurements of leptonic
$D_s^+$ decays to $\mu^+\nu_{\mu}$ and $\tau^+\nu_{\tau}$, and of hadronic
$D_s^+$ decays to $K^-K^+\pi^+$, $\bar{K}{}^0K^+$ and $\eta\pi^+$. The results
are obtained from a large data sample collected near the $\Upsilon(4S)$ and
$\Upsilon(5S)$ resonances with the Belle detector at the KEKB asymmetric-energy
$e^+e^-$ collider. We obtain the the branching fractions ${\cal
B}(D_s^+\to\mu^+\nu_{\mu})=(0.528\pm0.028\pm0.019)%$ and ${\cal
B}(D_s^+\to\tau^+\nu_{\tau})=(5.70\pm0.21{}^{+0.31}_{-0.30})%$ which are
combined to determine the $D_s$ decay constant $\fds=(255.0\pm4.2\pm5.0)$ MeV,
where the first and second uncertainties are statistical and systematic,
respectively. Branching fractions of hadronic decays are measured to be ${\cal
B}(D_s^+\to K^-K^+\pi^+)=(5.06 \pm 0.15\pm 0.19)%$, ${\cal
B}(D_s^+\to\bar{K}{}^0K^+)=(2.84 \pm 0.12\pm 0.08)%$ and ${\cal
B}(D_s^+\to\eta\pi^+)=(1.79\pm0.14\pm 0.05)%$.
High Energy Physics - Experiment (hep-ex)
[hep-ex] for this version)
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From: Anže Zupanc []
[v1] Mon, 17 Dec :25 GMTExtremes of fractional noises: A model for the timings of arrhythmic heart beats in... - Abstract - Europe PMC
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Annette Witt
Biomedical Physics Group, Max-Planck Institute for Dynamics and Self-Organization, G?ttingen, Germany.
Frithjof Ehlers
Biomedical Physics Group, Max-Planck Institute for Dynamics and Self-Organization, G?ttingen, Germany.
Stefan Luther
Biomedical Physics Group, Max-Planck Institute for Dynamics and Self-Organization, G?ttingen, Germany.
German Center for Cardiovascular Research (DZHK), Partner Site G?ttingen, G?ttingen, Germany.
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[01 Sep ):093942]
Journal Article
We have analyzed symbol sequences of heart beat annotations obtained from 24-h electrocardiogram recordings of 184 post-infarction patients (from the Cardiac Arrhythmia Suppression Trial database, CAST). In the symbol sequences, each heart beat was coded as an arrhythmic or as a normal beat. The symbol sequences were analyzed with a model-based approach which relies on two-parametric peaks over the threshold (POT) model, interpreting each premature ventricular contraction (PVC) as an extreme event. For the POT model, we explored (i) the Shannon entropy which was estimated in terms of the Lempel-Ziv complexity, (ii) the shape parameter of the Weibull distribution that best fits the PVC return times, and (iii) the strength of long-range correlations quantified by detrended fluctuation analysis (DFA) for the two-dimensional parameter space. We have found that in the frame of our model the Lempel-Ziv complexity is functionally related to the shape parameter of the Weibull distribution. Thus, two complementary measures (entropy and strength of long-range correlations) are sufficient to characterize realizations of the two-parametric model. For the CAST data, we have found evidence for an intermediate strength of long-range correlations in the PVC timings, which are correlated to the age of the patient: younger post-infarction patients have higher strength of long-range correlations than older patients. The normalized Shannon entropy has values in the range 0.5&hLZ&1.0 which indicates a high degree of randomness in the PVC timings. For the CAST and the model data, the ranges of both measures were found to be in good accordance. The correlation between the age and the persistence strength found for the CAST data could be explained as a change of model parameters.
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