Search Results - subject:"Wavelet Analysis"

Studies of spectral properties of short genes using the wavelet subspace Hilbert–Huang transform (WSHHT)

Jiang, Rong; Yan, Hong - In: Physica A: Statistical Mechanics and its Applications 387 (2008) 16, pp. 4223-4247

This paper presents a new algorithm for the analysis of spectral properties of short genes using the wavelet transform and the Hilbert–Huang transform (HHT). A wavelet subspace algorithm combined with the empirical mode decomposition (EMD) is introduced to create subdivided intrinsic mode...

Persistent link: https://www.econbiz.de/10010872223

Statistical features of traffic flow on urban freeways

Guan, Wei; He, Shuyan - In: Physica A: Statistical Mechanics and its Applications 387 (2008) 4, pp. 944-954

Urban freeways play an important role in urban traffic networks. Compared with highway traffic, urban freeway traffic has different characteristics, such as denser on- and off-ramps, more complex road conditions, and lower velocity limits. Until now, however, there has been no comprehensive...

Persistent link: https://www.econbiz.de/10010872939

How fused is the euro area core?: An evaluation of growth cycle co-movement and synchronization using wavelet analysis

Crowley, Patrick M.; Mayes, David G. - In: OECD Journal: Journal of Business Cycle Measurement and … 2008 (2008) 1, pp. 63-95

This paper uses several recent advances in time-varying spectral methods to analyse the growth cycles of the core of the euro area in terms of frequency content and phasing of cycles. There are two main findings. First that coherence and phasing between the three core members of the euro area...

Persistent link: https://www.econbiz.de/10008492343

Instantaneous frequency–time analysis of physiology signals: The application of pregnant women’s radial artery pulse signals

Su, Zhi-Yuan; Wang, Chuan-Chen; Wu, Tzuyin; Wang, Yeng-Tseng - In: Physica A: Statistical Mechanics and its Applications 387 (2008) 2, pp. 485-494

This study used the Hilbert–Huang transform, a recently developed, instantaneous frequency–time analysis, to analyze radial artery pulse signals taken from women in their 36th week of pregnancy and after pregnancy. The acquired instantaneous frequency–time spectrum (Hilbert spectrum) is...

Persistent link: https://www.econbiz.de/10010589783

Long Run Inflation Indicators – Why the ECB got it Right

Andersson, Fredrik N. G. - Nationalekonomiska Institutionen, Ekonomihögskolan - 2008

This paper studies the issue of whether money contains useful information about future inflation in a panel of nine developed countries. A low frequency estimate of excess money growth is compared to an estimate of the inflation trend following the discussion in Woodford (2007). The empirical...

Persistent link: https://www.econbiz.de/10005419375

Estimation of ApEn for short-term HFECG based on multi-resolution analysis

Xu, Yinlin; Ma, Xiaofei; Ning, Xinbao - In: Physica A: Statistical Mechanics and its Applications 376 (2007) C, pp. 401-408

detail signals with multi-resolution wavelet analysis, and then their ApEn is calculated. A conclusion can be drawn that …

Persistent link: https://www.econbiz.de/10010872090

Classification of spontaneous EEG signals in migraine

Bellotti, R.; De Carlo, F.; de Tommaso, M.; Lucente, M. - In: Physica A: Statistical Mechanics and its Applications 382 (2007) 2, pp. 549-556

We set up a classification system able to detect patients affected by migraine without aura, through the analysis of their spontaneous EEG patterns. First, the signals are characterized by means of wavelet-based features, than a supervised neural network is used to classify the multichannel...

Persistent link: https://www.econbiz.de/10010874473

Wavelet entropy of stochastic processes

Zunino, L.; Pérez, D.G.; Garavaglia, M.; Rosso, O.A. - In: Physica A: Statistical Mechanics and its Applications 379 (2007) 2, pp. 503-512

We compare two different definitions for the wavelet entropy associated to stochastic processes. The first one, the normalized total wavelet entropy (NTWS) family [S. Blanco, A. Figliola, R.Q. Quiroga, O.A. Rosso, E. Serrano, Time–frequency analysis of electroencephalogram series, III. Wavelet...

Persistent link: https://www.econbiz.de/10011062642

The Relationship Between Financial Variables and Real Economic Activity: Evidence From Spectral and Wavelet Analyses

Kim, Sangbae; In, Francis - In: Studies in Nonlinear Dynamics & Econometrics 7 (2007) 4, pp. 1183-1183

this relationship, we adopt two time-series techniques: spectral analysis and a newly developed method, wavelet analysis …. The major innovation of this paper is to apply wavelet analysis to the investigation of the relationship between various … confirmed by wavelet analysis. The lead-lag relationship, in the sense of Granger causality, varies over time, depending on the …

Persistent link: https://www.econbiz.de/10004966242

Wavelet Analysis of the Cost-of-Carry Model

Lin, Shinn-Juh; Stevenson, Maxwell - In: Studies in Nonlinear Dynamics & Econometrics 5 (2007) 1, pp. 87-102

In this paper, it is shown how one can employ the wavelet analysis to reconstruct data based only on the subset of …

Persistent link: https://www.econbiz.de/10005007691