anselin l 2000 computing environments for spatial data analysis journal of

Báo cáo hóa học: " A cross-layer resource allocation scheme for spatial multiplexing-based MIMO-OFDMA systems" docx

... total transmission power of P max watts and S subchannels are available for transmission Assuming that the total power available for subchannel s is distributed equally across spatial channels, ... is the set of subchannels assigned to user k V Suboptimal power and subchannel allocation Ideally, the subchannels and power levels must be allocated jointly to achieve the optimal solution to ... O(S) Therefore, the overall complexity of the posed algorithm can be roughly given as O(SK) , which is still efficient compared to the complexity of the brute-force search over all possible combinations,...

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Statistical Methods for Survival Data Analysis - Third Edition potx

Danh mục: Cao đẳng - Đại học

... available in electronic format Library of Congress Cataloging-in-Publication Data: Lee, Elisa T Statistical methods for survival data analysis. 3rd ed./Elisa T Lee and John Wenyu Wang p cm. (Wiley ... of survival data in biomedical sciences, although all the methods are suitable for applications in industrial reliability, social sciences, and business Examples of survival data in these ﬁelds ... Statistical Methods for Survival Data Analysis Statistical Methods for Survival Data Analysis Third Edition ELISA T LEE JOHN WENYU WANG Department of Biostatistics and Epidemiology and Center for American...

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Báo cáo khoa hoc:" EM-REML estimation of covariance parameters in Gaussian mixed models for longitudinal data analysis" docx

Danh mục: Báo cáo khoa học

... parameters) ML REML {1} {2} {3} Method Model Table III Likelihood statistics (ML, REML, − 2L) of several models for the analysis of facial growth in 11 girls and 16 boys (Pothoﬀ and Roy [22]; Little and ... temporal and environmental levels [8, 24, 25, 27] which enlarges the range of potentially useful models for longitudinal data analysis σ 2[t+1] = i=1 ˆ yi H−1 (ρ[t] )yi − θ i 140 J. -L Foulley et al ... Diggle P.J., Liang K.Y., Zeger S .L. , Analysis of longitudinal data, Oxford Science Publications, Clarendon Press, Oxford, 1994 [5] Foulley J .L. , Quaas R .L. , Heterogeneous variances in Gaussian linear...

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Báo cáo sinh học: "Speeding up the Consensus Clustering methodology for microarray data analysis" doc

Danh mục: Báo cáo khoa học

... GB: Loevinger’s measures of rule quality for assessing cluster stability Computational Statistics & Data Analysis 2006, 50:992-1015 32 Klie S, Nikoloski Z, Selbig J: Biological Cluster Evaluation ... earlier, all other stability-based methods available in the literature follow the same strategy for the construction of a large number of clustering solutions Therefore, the FC speed-up applies ... capable of granting scalability with dataset size Such a lack of scalability for the most precise internal validation measures is one of the main computational bottlenecks in the process of cluster...

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Advanced Methods and Tools for ECG Data Analysis - Part 1 ppt

Danh mục: Sức khỏe giới tính

... paradigm of multidimensional signal analysis is well known to the ECG signal analyst, and parallel analysis of the ECG (or ECG-derived parameters) almost always enhances an algorithm’s performance For ... cardiac cell, will propagate along the cell membrane until the entire cell is depolarized Myocardial cells have the unique property of transmitting action potentials from one cell to adjacent cells ... a parallel set of cellular and molecular processes known as excitation-contraction coupling: the cell’s depolarization leads to high intracellular calcium concentrations, which in turn unlocks...

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Advanced Methods and Tools for ECG Data Analysis - Part 2 doc

Danh mục: Sức khỏe giới tính

... extensibility of the annotations format to allow the use of defined labels and links to external documents, including the use of hypertext links; The inclusion of libcurl libraries to allow access ... roll-off of kHz cutoff Bessel antialiasing analog filter) sampled at kHz has spectral copies at multiples of kHz and suffers aliasing (overlapping regions) Figure 2.6 The same signal, band-limited ... and writing data available for all the operating systems on which the ECG will be analyzed? Are there additional associated libraries for signal processing freely available? Can the libraries be...

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Advanced Methods and Tools for ECG Data Analysis - Part 3 docx

Danh mục: Sức khỏe giới tính

... frequency plotted horizontally on a log scale Note that the gradient β of the l og − l og plot is only meaningful for the longer scales (After: [46].) or calculating the slope,17 β, of the log − log ... average value of all individual measurements is calculated For the calculation of the mean TO in the current version (1.11) of the freely available HRT-algorithm [121], at least 15 normal intervals ... Utilization of the LSP, therefore, reveals a theoretical lower information threshold for accepting segments of an RR tachogram for spectral analysis in the upper HF region If RR intervals of...

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Advanced Methods and Tools for ECG Data Analysis - Part 4 ppsx

Danh mục: Sức khỏe giới tính

... plane, the impulse response of all channels are of equal length This implies that the STFT offers the same temporal resolution across all frequencies Similarly the bandwidth of all the channels ... are often initiated by abnormal electrical activity at the cellular scale or the ionic channel level Cellular automata provide an effective means of constructing whole heart models and of simulating ... mechanisms at cell, channel, and molecular level [96] In the following, we review some promising research in the area of whole heart modeling, such as cellular autonoma and multiscale modeling approaches...

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Advanced Methods and Tools for ECG Data Analysis - Part 5 pdf

Danh mục: Sức khỏe giới tính

... changing complexity from relatively small amounts of data arising from RR intervals [47] Sample entropy [40] has also been employed to explore the multiple time scales involved in physiological dynamics ... information is gained by knowing that the variable X takes a value in some interval of length 1/n Alternatively, if the variable X always falls into one of the n intervals, all the probabilities ... plot the spectrum of this signal, we will observe a 1/ f β -like slope in the log − log plot Performing a regression on this line gives us our value of β, which corresponds to the the color of...

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Advanced Methods and Tools for ECG Data Analysis - Part 6 docx

Danh mục: Sức khỏe giới tính

... (discordant alternans), leading to unidirectional block and ventricular fibrillation [8] 7.4 Measurable Indices of ECG T-Wave Alternans Several measurable indices of TWA have demonstrated clinical relevance, ... the simplest clinical scenario that may apply during cardiac pacing, and it lends itself readily to spectral analysis The seminal clinical reports of Smith et al [2] and Rosenbaum et al [3] determined ... been applied to clinical datasets or validated against clinically meaningful endpoints During steadystate, many methods may be similarly effective for computing TWA However, TWA analysis should increasingly...

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Advanced Methods and Tools for ECG Data Analysis - Part 7 ppt

Danh mục: Sức khỏe giới tính

... “Essai exp´ rimental et analytique: sur les lois de la dilatabilit´ de flue e ´ ides elastiques et sur celles de la force expansive de la vapeur de l eau et de la ` vapeur de l alkool, a diff´ rentes ... the means of each class Such a single mean multiclass approach retains means and therefore utilizes the spatial distribution of individual classes, while exclusion of noisy outliers yields a robust ... Gallino, A., et al., “Computer System for Analysis of ST Segment Changes on 24 Hour Holter Monitor Tapes: Comparison with Other Available Systems,” Journal of the American College of Cardiology,...

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Advanced Methods and Tools for ECG Data Analysis - Part 8 docx

Danh mục: Sức khỏe giới tính

... statistical technique for predicting real-world clinical performance and robustness A graphic user interface module of the tool provides display of all evaluation results The tool has been made freely ... time-varying global and local ST segment reference level trend [srg (i, k) and srl (i, k), respectively], of the ST level functions, sl (i, k), by applying two movingaverage lowpass filters The ST level ... approximation zl of zl is constructed as N zl = clmΦm (9A.13) m=1 where N < M, the expected MSE, L e2 ( N) = p( l ) E{|zl − zl |2 } (9A.14) l= 1 is minimized for all N Another optimal property of the KLT...

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Advanced Methods and Tools for ECG Data Analysis - Part 9 ppsx

Danh mục: Sức khỏe giới tính

... modes For the purpose of simple comparison of all systems, we have calculated also the average of all mean errors in the learning and testing modes Moreover, in order to obtain reliable results ... results For all 13 beat types, an average error rate, calculated as the average of the mean misclassification errors of all classes, of 7.12% was obtained The error rate calculated as the simple ... of such approaches is a collection of clusters, which refer to a group of data vectors with numerically close values of a specified similarity metric A cluster may be linked to significant classes...

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Advanced Methods and Tools for ECG Data Analysis - Part 10 pps

Danh mục: Sức khỏe giới tính

... University of Birmingham, England, and is a Fellow of the Royal College of Physicians of London He pursued postdoctoral training in neuro-electrophysiology at the University of California, Los Angeles, ... available [14] A single clustering algorithm may not always perform well for different types of data sets Therefore, the application of more than one clustering model is recommended to facilitate ... boards of BioMedical Engineering OnLine and the Journal of Biological Systems His research interests include multidimensional biomedical signal processing, linear and nonlinear time series analysis, ...

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Statistical Methods for Survival Data Analysis 3rd phần 1 pps

Danh mục: Quản trị kinh doanh

... available in electronic format Library of Congress Cataloging-in-Publication Data: Lee, Elisa T Statistical methods for survival data analysis. 3rd ed./Elisa T Lee and John Wenyu Wang p cm. (Wiley ... of survival data in biomedical sciences, although all the methods are suitable for applications in industrial reliability, social sciences, and business Examples of survival data in these ﬁelds ... Statistical Methods for Survival Data Analysis Statistical Methods for Survival Data Analysis Third Edition ELISA T LEE JOHN WENYU WANG Department of Biostatistics and Epidemiology and Center for American...

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Statistical Methods for Survival Data Analysis 3rd phần 2 ppsx

Danh mục: Quản trị kinh doanh

... applied to patients with a given disease who have been followed for a period of time Life tables constructed for patients are called clinical life tables Although population and clinical life ... published The annual life tables are often seen in ﬁve-year age intervals and are called abridged life tables Tables 4.4 and 4.5 are, respectively, a complete decennial life table for the total ... foundation of the life table from which all of the other columns are derived Number living at beginning of age interval (l ) The initial value of l , the V V size of the hypothetical population,...

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Statistical Methods for Survival Data Analysis 3rd phần 3 docx

Danh mục: Quản trị kinh doanh

... written classic reports on life-table analysis Peto et al (1976) published an excellent review of some statistical methods related to clinical trials The term life-table analysis that they use includes ... the data in life-table format Provide a life-table like Table 4.5 What you ﬁnd out? 4.8 Do a complete life-table analysis for the two sets of data given in Table 3.5 Plot the three survival functions ... simple to apply 5.3.1 Kruskal Wallis Test The Kruskal—Wallis H-test (Kruskal and Wallis, 1952; Hollander and Wolfe, 1973; Marascuilo and McSweeney, 1977), analogous to the F-test in the usual analysis...

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Statistical Methods for Survival Data Analysis 3rd phần 4 pot

Danh mục: Quản trị kinh doanh

... gamma, and log-logistic distributions Applications of survival distributions can be found easily in medical and epidemiological journals The following are a few examples: Dharmalingam et al (2000) , ... exact survival times of n individuals under investiga L tion If their survival times follow the Weibull distribution, the log-likelihood function is L l( , ) : n log ; n log ; [( 1) log t AtA] ... (1958) as a statistical model for life length of materials Since then, this distribution has been used frequently as a model for industrial reliability problems and human survival   ...

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Statistical Methods for Survival Data Analysis 3rd phần 5 pptx

Danh mục: Quản trị kinh doanh

... Exponential Exponential LL X * df l %% l *, l % l l # l # l # 2 (l l ) %% *, 2 (l l ) %% % 2 (l l ) %% 2 (l l ) %% # 2 (l l ) % # 2 (l l ) # 1 1 ? LL, log-likelihood; X , likelihood ratio chi-square ... Weibull distribution appears to be a good ﬁt graphically The following hypothetical example illustrates the use of the Weibull probability plot The small number of observations used in the example ... exponential and the extended generalized gamma, :9(1/ ) log for the Weibull, : for the lognormal, and :9(1/ ) log for the log-logistic distribution A B : 1/ for the Weibull and log-logistic, : for...

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Statistical Methods for Survival Data Analysis 3rd phần 6 pdf

Danh mục: Quản trị kinh doanh

... ? LL, log-likelihood; LLR, log-likelihood ratio statistic; p, probability that the respective chi-square random variable 9LLR @ Lognormal relative to extended generalized gamma A Weibull relative ... regression model, the Weibull regression model is also a special case of the proportional hazard models The following example illustrates the use of the Weibull regression model and of computer software ... Table 11.8 Goodness -of- Fit Tests Based on Asymptotic Likelihood Inference on Lung Cancer Data Distribution Extended generalized gamma Log-logistic Lognormal Weibull Exponential Exponential LL? LLR?...

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