compression of time series flow field data

... topology of the network and measurement data is studied In particular, the authors of [12] seek to identify a small subset of representative sensors which leads to minimal distortion of the data ... {κ(x1 , ·), , κ(xn , ·)} of kernel functions, and the family of disks of radius ν centered at each κ(xk , ·) Within this framework, a set cover is a collection of some of these disks whose union ... world of wireless sensor networks suffers from lack of real system deployments and available data experiments Researchers often evaluate their algorithms and protocols with model-driven data [38]...

Ngày tải lên: 21/06/2014, 17:20

... methods of timeseries analysis in the time domain which arose largely as a consequence of the failure of the traditional methods of periodogram analysis The synthesis of the two branches of time- series ... astronomical data Even more remarkable is the way in which the generalised harmonic analysis that gave rise to the concept of the spectral density of a time 12 1: THE METHODS OF TIME- SERIES ANALYSIS series ... central technologies of the latter half of this century, places most of its weight on one side of the scales D.S.G POLLOCK xxvi Introduction CHAPTER The Methods of Time- Series Analysis The methods...

Ngày tải lên: 27/05/2014, 02:44

... and heatmap visualization of simultaneous clustering of curves and time points Finally, some elements of discussion about the analysis of times -series gene expression data are given to conclude ... coclustering of Anopheles gene expression time series: study of immune defense response to multiple experimental challenges,” Proceedings of the National Academy of Sciences of the United States of America, ... representations of time- series gene expression data, ” Journal of Computational Biology, vol 10, no 34, pp 341–356, 2003 [13] Z Bar-Joseph, “Analyzing time series gene expression data, ” Bioinformatics,...

Ngày tải lên: 22/06/2014, 19:20

... of dynamic system 10 Figure 2.2 Flow chart of SEIR compartmental model 11 Figure 2.3 Time series plot of weekly measles for the aggregated data 13 Figure 2.4 Time series ... the time series plot Figure 2.5 shows the time series plot of biweekly measles data for each year Due to the seasonality, i.e the school and non-school time, 16 Chapter SIR Model and Measles Data ... discuss the time series- susceptible-infected-recovered (TSIR) model which bridges the gap between the theoretical models in epidemics and the discrete time series data Using the measles data of London...

Ngày tải lên: 30/09/2015, 13:49

... Preamble Compared to the study of linear time series, the development of nonlinear time series analysis and forecasting is still in its infancy The beginning of nonlinear time series analysis has been ... of stochasticity in time series by postulating that every time series can be regarded as the realization of a stochastic process Based on this simple idea, a number of time series methods have ... especially in the context of finance, forecasting time series with a discrete sample space (such as time series of counts) is still its infancy (see Section 9) Such data are very prevalent in...

Ngày tải lên: 04/09/2016, 08:48

... jiffies; jiq _data. queue = NULL; /* don't requeue */ init_timer(&jiq_timer); /* init the timer structure */ jiq_timer.function = jiq_timedout; jiq_timer .data = (unsigned long)&jiq _data; jiq_timer.expires ... currentime currentime currentimegettime: 846157215.937221 xtime: 846157215.931188 jiffies: 1308094 gettime: 846157215.939950 xtime: 846157215.931188 jiffies: 1308094 gettime: 846157215.942465 xtime: ... current time, as calculated at the last timer tick #include void do_gettimeofday(struct timeval *tv); void get_fast _time( struct timeval *tv); The functions return the current time; ...

Ngày tải lên: 24/12/2013, 01:17

... types of time series data Figure Output of our system with limit = 10 BP is stable around 30 kpa until 5:59:59 Figure Output of our system with limit = 30 Figures and show example output of our ... Segmenting Time Series In: Proceedings of IEEE International Conference on Data Mining„ pp 289-296 Karen Kukich 1983 Design and implementation of a knowledge-based report generator In: Proceedings of ... in the data set RESUME (Shahar, 1997) uses knowledge based temporal abstraction for producing abstractions of clinical data TREND (Boyd, 1998) uses wavelets to analyze archives of weather data...

Ngày tải lên: 22/02/2014, 02:20

... preliminary understating of the time behavior of the series Fig.1 shows time series plot of selected time series air pollution concentration This Figure shows different time behavior of air pollutants ... analysis A time series is a set of observations that are arranged chronologically In time series analysis, the order of occurrence of the observation is crucial If the chronological ordering of data ... synchronous time fluctuations of air pollutants The different time correlation behavior of the pollutants is further discussed in section 3.3 Time series results The first step in time series analysis...

Ngày tải lên: 15/03/2014, 20:20

... number of change-points, mi is the number of time points in segment i, and n is the total number of time pointsl If the change points are not known, the maximum likelihood estimate (MLE) of the ... is a time variable It is assumed that the time series can be modeled mathematically, where each model is characterized by a set of parameters The problem of event detection becomes one of recognizing ... Figure 6: Data Set: V274 Figure 7: Data Set: V287 Figure 8: Data Set: V Figure 9: Data Set: V315 Ol The proposed algorithm’s behavior was evaluated on four different data sets, the results of which...

Ngày tải lên: 16/03/2014, 19:20

... smooth functions of time and weather variables to adjust for the time- varying confounders In the last 10 years, many advances have been made in the statistical modelling of time series data on air ... implementation for time series analyses of pollution and health delayed the review of the National Ambient Air Quality Standard (NAAQS) for PM, as the time series findings were a critical component of the ... quite expensive for very long time series Notice also that, because of the availability of a closed form solution of the back-fitting estimate of the smooth part of the GAM model — that is f =...

Ngày tải lên: 23/03/2014, 00:20

... in multicity time series studies of air pollution and mortality The complexity of the time series data requires the application of sophisticated statistical models that are capable of estimating ... investigators in the area of time series modelling of air pollution and health data A general strategy is to use a data- driven method and to select the number of degrees of freedom (df) which optimizes ... all the methods to the NMMAPS database, the largest publicly available database containing time series data of air pollution and mortality Our analysis of the NMMAPS data is important because it...

Ngày tải lên: 29/03/2014, 18:20

... University of North Carolina at Chapel Hill TIME SERIES DATA ANALYSIS USING EVIEWS TIME SERIES DATA ANALYSIS USING EVIEWS I Gusti Ngurah Agung Graduate School Of Management Faculty Of Economics ... over time and panel data This book introduces and discusses time series data analysis, and represents the first book of a series dealing with data analysis using EViews After more than 25 years of ... 570 571 Preface Time series data, growth, or change over time can be observed and recorded in all their biological and nonbiological aspects Therefore, the method of time series data analysis should...

Ngày tải lên: 30/03/2014, 04:21

... H B CP B C H X X R e B b R C b B C $GDG(Di($W(ƯfciăgD$lWDăpiq`Ô9fDfDf9$Ôjă9Ô DISCRETIZING TIME SERIES w b B V X B B e P B CP X R CT e b BT S S R V X R CT X F b R C 3tDă`ÔDAD(D(lAăhw9$GDfÔDc(dƯ$A9$G`9GÔ9$Ôb ... w t e E V @F V eT R V B C X U RT B e X P C e X V X e R X B @ B e V e 8 B e b B V X F V e of 1p#(GD` of` oDÔ`ÔDÔD1ƯDÔD`tD1`w$tcT r UT S P C @ e V XT 8 B e z p X w RT B e X b R B 8P B S R ... wF V R UT X e P C R V H e RT V e R C b F @ HT X e R 8T b p C v$Ư$G`j9Dsăhăpf9Diăt#Ôc9pG`ƯÔG of Ôb B 8T B C Ô F V B e X B Q e S R V e R 8T b p C b e 8F V e X B Q fGD($9ƯăDAD(f9DhƯăÔGÔpffjfGÔÂ7AD(W(75...

Ngày tải lên: 30/03/2014, 13:20

... for the real price -series of Fig (top left) and a random walk price -series (top right) Bottom: histogram of individual agents’ time- averaged success rate ance) in the prediction of N0−1 using S0−1 ... the majority of movements in high-frequency market data are self-generated, i.e produced by the internal activity of the market itself The price -series P (t) can hence be thought of as being produced ... linear function of S0+1 The predicted pdf for an arbitrary number j of timesteps into the future, is then generated by calculating the net value of S0−1 along all possible future routes of the third-party...

Ngày tải lên: 23/04/2014, 16:11

... each of the study questions, including the study site, the study month (a measure of the effect of time) , the number of monthly MD/MO visits (a measure of MD/MO capacity), and the number of monthly ... adults of over 15 years of age Pediatric patients were excluded from this analysis, as CD4 nurses were not authorized to screen this subset of the population Study data were derived from existing databases ... absorb some of the overflow Another important limitation of the study is due to differential implementation of the intervention itself The results from the first outcome (the proportion of visits...

Ngày tải lên: 18/06/2014, 17:20

... treatment of specific phobias (e.g fear of heights) [8,19] Wide field of view (FOV), screen-based projection devices (or spatially immersive displays) originated with the CAVE™ at the University of ... majority of responses and the presence of long tails, we tabulated the frequency of non-zero responses for each dependent variable The effect of visit number and trial number on the frequency of non-zero ... different types of gaze movements under different optic flow conditions On 75% of the trials, subjects reported no subjective discomfort On 69% of the trials subjects reported no symptoms of simulator...

Ngày tải lên: 19/06/2014, 10:20

... Furthermore, the mean of four short time series of 256 points was shown to provide a better estimate of H than a single time series of 1024 points The results of the reliability analysis of the present ... effect of time on HDFA The interpretation of HDFA depends on the values detected Values of HDFA greater than 0.5 are indicative of a persistent times series, with higher values due to a smoother time ... the biological time series was mapped as a stochastic process, and the resulting estimations of H The method of Collins and De Luca did not take into account that biological time series have bounds...

Ngày tải lên: 19/06/2014, 10:20

... magnetic relaxation time of cluster is more and more Page of above the period of external field (The relaxation time is constant while the period of field is the reciprocal of frequency) Then, ... of external field is low enough, the field will be incapable of inducing the assembly of magnetic Figure SEM images of DMSA-coated g-Fe2O3 nanoparticles after solvent drying In the presence of ... than that of nanoparticulate cluster The relaxation time of 11-nm particle was calculated to be 0.004 ms, far below the periods of external field of any frequency It means that the variety of magnetic...

Ngày tải lên: 21/06/2014, 02:20

... INp Now the data dependent pilot sequence is given as pd = −JT x d The data dependent pilot sequence is added on top of the data sequence in order to remove the cyclic mean of the data sequence, ... σd /Nc , is the expected power of the data- dependent pilot sequence In Figure 3, we have shown the true distribution of the real part of the cyclic mean component of QPSK constellation based on ... discussed in [20] In a sense, the idea of using only the most significant components of the decomposition is similar to our idea of truncating the time window of the channel estimator to take into...

Ngày tải lên: 21/06/2014, 23:20

... University—thesis on “Development and real -time test of video compression algorithms,” and Ph.D degree—thesis on “Implementation and simulation of real -time multimedia embedded system for video telephony ... technique avoids database overload due to video/audio data relative high bit-rate Database can therefore store long event sequences, even during tasks such as data reordering or data defragmentation ... defragmentation operations Reference data are stored in the database as small records Figure shows the web browser interface From the data telecommunication point of view, one of the development challenges...

Ngày tải lên: 22/06/2014, 19:20