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The purpose of this study was to investigate the reliability and validity of the U-shape electronic walkway (USEW) in assessing gait variation in persons with Parkinson's disease (PD). Gait parameters from the straight part and corner part of the USEW were calculated and compared. Most of the gait parameters in PD group were significantly different as compared with that in the healthy elderly (HE)...
Now, cross-modal retrieval similarity on multimedia with texts and images have attracted scholars' more and more attention. The difficulty of cross-modal retrieval is how to effectively construct correlation between multi-modal heterogeneous data. According to canonical correlation analysis, most existing cross-modal methods embed the heterogeneous data into a joint abstraction space by linear projections...
The time series remote sensing data and meteorological satellite data offer new opportunities for understanding the earth system. Spatio-temporal data clustering becomes a kind of idea tool to explore huge data space of spatio-temporal data. Because there are many uncertainties in the huge spatio-temporal data, including fuzziness and randomness, the spatio-temporal clustering methods with uncertainties...
Spatial data clustering is an effective method to find interesting spatio-temporal clustering patterns. There are many uncertainties in sea surface temperature (SST) clustering, so clustering methods with uncertainty must be used. Type-2 fuzzy theory takes into account the uncertainty of membership grade while fuzzy C means (FCM) not. Based on the analysis of interval type-2 fuzzy C means (IT2FCM),...
Jamming resistance is crucial for applications where reliable wireless communication is required. Spread spectrum techniques such as Frequency Hopping Spread Spectrum (FHSS) and Direct Sequence Spread Spectrum (DSSS) have been used as countermeasures against jamming attacks. Traditional anti-jamming techniques require that senders and receivers share a secret key in order to communicate with each...
Delay Tolerant Wireless Sensor Networks (DTWSNs) are sensor networks where continuous connectivity between the sensor nodes and their final destinations (e.g., the base station) cannot be guaranteed. Storage constraints are particularly a concern in DTWSNs, since each node may have to store sensed data for a long period of time due to intermittent communication while continuously collecting data....
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