نتایج جستجو برای: frequency content
تعداد نتایج: 884269 فیلتر نتایج به سال:
This paper examines newly-available high frequency consumer confidence data, notably a daily survey conducted by Rasmussen. The information content of competing confidence measures is assessed. The Rasmussen survey is found to have some predictive power for future consumption growth, though a bit less than the lower-frequency Michigan survey. We also consider the determinants of consumer confid...
Stereoacuity depends not only on the carrier frequency of Gabor stimuli, but also upon their size. To determine if this is also the case at large disparities, we have measured the upper limit for stereopsis, "Dmax", and assessed its dependence on carrier frequency and overall envelope size. The results differ markedly from the stereoacuity data. Dmax for stereopsis is primarily dependent on the...
In this study, the effect of earthquake frequency content and noise effects on damage detection has been investigated. For this purpose, the damage was defined as nonlinear behavior of beams and columns, and several ground motion records were scaled so that some elements yield under the applied excitation. Then the acceleration response data of each floor obtained using the nonlinear dynamic an...
A coarse-mesh finite element model of an engine cradle structure is experimentally correlated using the structural system identification technique. The coarsemesh model represents the cradle structure with beam and spring elements. The structural system identifcation code SSID is used to update the structural properties to correlate the model with measured natural frequency and modeshape data. ...
In this work is presented a method for the optimization of digital correlators to improve the characteristic detection on images using wavelet transform as well as subband filtering. It is proposed an approach of wavelet-based image contrast enhancement in order to increase the performance of digital correlators. The multiresolution representation is employed to improve the high frequency conte...
The use of RFID technology in HCI research is emerging. We identify its promising application in the healthcare sector by empowering the process of capturing, extracting and analyzing data, which help understand task patterns underlying human errors and other intriguing phenomena. RFID and video as research tools are compared to identify their strengths and weaknesses. RFID can be cost-effectiv...
In this paper a new relevance feedback (RF) methodology for content based image retrieval (CBIR) is presented. This methodology is based on Gaussian Mixture (GM) models for images. According to this methodology, the GM model of the query is updated in a probabilistic manner based on the GM models of the relevant images, whose relevance degree (positive or negative) is provided by the user. This...
Now adays, content-based image retrieval (CBIR) is the mainstay of image retrieval systems. To be more profitable, Relevance Feedback (RF) techniques were incorporated into CBIR such that more precise results can be obtained by taking user's feedbacks into account. In this paper Content Based Image Retrieval algorithms using Relevance Feedback technique are discussed. The comparative study...
This paper presents a dynamically reconfigurable multi-radio RF architecture concept, which can be used for RF platform and control optimization. The platform realization is based on the RF hardware and its configuration mechanisms. The related control software is realized through functional separation of configuration management and timing control. Both key hardware and software elements are d...
For each scanned object 3D triangulation laser scanners deliver multiple sweeps corresponding to multiple laser motions and orientations. The problem of aligning these scans has been well solved by using rigid and, more recently, non-rigid transformations. Nevertheless, there are always residual local offsets between scans which forbid a direct merging of the scans, and force to some preliminar...
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