21615 research activity

báo cáo hóa học: " Air pollution research: visualization of research activity using density-equalizing mapping and scientometric benchmarking procedures" pptx

báo cáo hóa học:
... served as a measure of both public interest and scientific productivity concerning the topic of air pollution The comparison of results in "Web of Science" (26,253) and "PubMed" (28,565) indicated ... The New England journal of medicine 2009, 360(4):376-386 doi: 10.1186/1745-6673-5-5 Cite this article as: Zell et al., Air pollution research: visualization of research activity using density-equalizing ... "air pollution" and "air quality" were connected with the Boolean operator "OR" and entered in the search field "General Search" The time frame was limited to the period between 1955 and 2006 For...
  • 9
  • 110
  • 0

Báo cáo hóa học: " Research Article Titan: An Enabling Framework for Activity-Aware “Pervasive Apps ” in Opportunistic Personal Area Networks" pptx

Báo cáo hóa học:
... Titan allows for the inclusion of such techniques into an activity-aware system Combining these techniques with Titan further supports our objective of deploying activity-aware Pervasive Apps in ... standards for accessing, describing, and composing services in a globally connected network of thousands of sensors, actuators, and processing units Titan provides dynamic mechanisms allowing ... Computing, vol 8, no 2, pp 49–56, 2009 G Fortino, A Guerrieri, F L Bellifemine, and R Giannantonio, “SPINE2: developing BSN applications on heterogeneous sensor nodes ,” in Proceedings of the IEEE International...
  • 22
  • 144
  • 0

Báo cáo hóa học: " Research Article The Effect of a Voice Activity Detector on the Speech Enhancement Performance of the Binaural Multichannel Wiener Filter" ppt

Báo cáo hóa học:
... with attack and release time constants τraise and τdecay The differences between the maxima and minima are calculated to obtain the current dynamic range of the signal (4) The decision for a speech ... vectors containing speech samples will be added to the noise data matrix in (5), which leads to cancellation of parts of the speech signal On the other hand, if too many actual noise samples are detected ... stationary directional noise and nonstationary diffuse noise The nonstationary noise is derived from recordings in a restaurant to approach a real world situation Section provides a discussion of...
  • 12
  • 118
  • 0

Báo cáo hóa học: "Research Article A Method for Visualizing Independent Spatio-Temporal Patterns of Brain Activity" potx

Báo cáo hóa học:
... eigenvalues of the transformed covariance matrices have maximal variance for one class and minimal variance for the other class First, for the two classes (1 and 2), the classlabeled observations are ... Laplacian spatial filter as well as a manageable feature space for the ISTP method 4.1 Common Spatio-Temporal Patterns Prior to performing the ICA, the Common Spatio-Temporal Patterns (CSTPs) can ... produces a set of independent spatio-temporal patterns that are informative in terms of substantiating the morphology of the EEG during different mental states The Method of Common Spatial Patterns...
  • 6
  • 74
  • 0

Báo cáo hóa học: " Research Article Extraction of Desired Signal Based on AR Model with Its Application to Atrial Activity " doc

Báo cáo hóa học:
... PARAMETERS OF AA SOURCE The above algorithm turns the problem of how to extract a desired signal into that of how to estimate the corresponding AR parameters Then we focused the research on how to estimate ... corresponding PSD along with the atrial frequency, where the spectral content above Hz is discarded due to its low contribution The extracted one can be regarded as AA signal, for that it has only one ... different sources for a different given AR parameter (p = 10) Given AR of s1 Given AR of s2 Given AR of s3 Given AR of s4 MSPE of s1 MSPE of s2 MSPE of s3 MSPE of s4 0.9974 0.9559 0.9459 0.9596 1.9918...
  • 9
  • 130
  • 0

Báo cáo hóa học: "Research Article Activity Representation Using 3D Shape Models" pot

Báo cáo hóa học:
... calculated, is used to estimate the 3D shapes, some of which are shown in Figure and used in activity recognition experiments 5.1.2 Activity representation using 3D models Using the video sequences and ... for using 3D deformable shape models for activity modeling and representation This has the potential to provide invariance to viewpoint and more detailed modeling of illumination effects The 3D shape ... required number of basis shapes 3.2 Estimation of deformable shape models We hypothesize that each shape sequence can be represented by a linear combination of 3D basis shapes Mathematically, if...
  • 16
  • 114
  • 0

Báo cáo hóa học: " Research Article Combination of Accumulated Motion and Color Segmentation for Human Activity Analysis" ppt

Báo cáo hóa học:
... shift color segmentation In Figure 9(g) we see the results of color segmentation on the activity areas of a frame of the video sequence After comparing and matching the color histograms of the color ... (b) (c) Activity area for table tennis, frames 10–20 Activity area for table tennis, frames 1–20 Color segmentation in the activity area (d) (e) (f) Color segmentation for background area Segmentation ... Activity area for frames 31 to 60 (c) Activity area for frames to 60 (d) MEI for tennis serve (e) (f) Color segmentation in the action mask Segmentation result for frame Segmentation result for frame...
  • 20
  • 99
  • 0

Báo cáo hóa học: " Research Article Joint Wavelet Video Denoising and Motion Activity Detection in Multimodal Human Activity Analysis: Application to Video-Assisted " doc

Báo cáo hóa học:
... presenting the BRFR segmentation methods developed by Collins et al [25] and T¨ reyin et al [26], since they were o used as the basis for the modified joint wavelet video denoising and motion activity ... SNR in order to reconfigure Wiener filter for a second wavelet processing scheme In the current work, we avoid to perform IWT by using the exact wavelet topology in both denoising stages (autowavelet ... on Advances in Signal Processing to motion- vector-based motion estimation approaches The method was tested in a video- assisted biomedical monitoring application and it was proved to efficiently...
  • 19
  • 90
  • 0

Báo cáo hóa học: " Research Article Activity Representation Using 3D Shape Models" docx

Báo cáo hóa học:
... calculated, is used to estimate the 3D shapes, some of which are shown in Figure and used in activity recognition experiments 5.1.2 Activity representation using 3D models Using the video sequences and ... for using 3D deformable shape models for activity modeling and representation This has the potential to provide invariance to viewpoint and more detailed modeling of illumination effects The 3D shape ... ground plane activities The 3D shapes in this case are reduced to 2D shapes due to the ground plane constraint The main reason for using our 3D approach (as opposed to a 2D shape matching one) is...
  • 16
  • 56
  • 0

Báo cáo hóa học: " Research Article Diurnal Changes of Heart Rate and Sympathovagal Activity for Temporal Patterns of Transient Ischemic Episodes in 24-Hour Electrocardiograms" pptx

Báo cáo hóa học:
... [7] A Smrdel and F Jager, Diurnal changes of heart rate and sympatho-vagal activity for temporal patterns of transient ischemia,” in Proceedings of 32th Annual Meeting on Computers in Cardiology, ... time- and frequency-domain parameters of instantaneous heart rate (IHR) before and during ischemic episodes for records with distinct temporal patterns of ischemia (salvo, periodic, sporadic) during ... Slight increase in heart rate for the salvo-episode set might be interpreted as an attempt to increase the blood supply to a heart muscle by an increase in heart rate Interestingly, the records in...
  • 10
  • 54
  • 0

Báo cáo hóa học: " Research Article A Semi-Continuous State-Transition Probability HMM-Based Voice Activity Detector" pdf

Báo cáo hóa học:
... incorrect transitions based on only one of H Othman and T Aboulnasr a1 1 a0 0 Setting τ0 to infinity results in a constant a0 0 and a constant a0 1 , and the transition matrix A becomes a0 1 S0 A= S1 a1 0 Speech ... slower adjustment To avoid starting with a large adaptation value at the beginning of a data stream, ρ is initially set a value that is less than There is no minimum value for ρ, thus, this learning ... semi-continuous state-transition probability scheme in the proposed HMM-based VAD, we first present the performance of an HMM-based VAD with univariate state PDFs and discrete -state-transition probabilities...
  • 7
  • 74
  • 0

Báo cáo hóa học: " Research Article Particle Filter with Integrated Voice Activity Detection for Acoustic Source Tracking" pot

Báo cáo hóa học:
... Johansson, E A Lehmann, and S Nordholm, “Realtime implementation of a particle filter with integrated voice activity detector for acoustic speaker tracking,” in Proceedings of the IEEE Asia Pacific ... December 2006 E A Lehmann and A M Johansson, “Experimental performance assessment of a particle filter with voice activity data fusion for acoustic speaker tracking,” in Proceedings of the 7th IEEE ... Experimental results from previous research carried out on particle filtering for ASLT have shown that steered beamforming (SBF) delivers an improved tracking performance compared to TDE-based methods...
  • 11
  • 73
  • 0

Xem thêm

Nạp tiền Tải lên
Đăng ký
Đăng nhập