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The efficiency of spatial query processing is crucial for many applications such as location-based services. In spatial networks, queries like k-NN queries are all based on network distance evaluation. Classic solutions for these queries rely on network expansion and are not efficient enough for large networks. Some approaches have improved the query efficiency but brought considerable space cost...
A simple, objective and quantitative unsupervised outcome measure is considered vital in the home-based rehabilitation for stroke patients. The Fugl-Meyer Assessment (FMA) scale is widely utilized in the clinical practice, while not suitable in the home settings due to its subjective and time-consuming property. In this paper, a Support Vector Regression (SVR) based evaluation model was presented...
A model-based controller for artificial pancreas requires a model that is able to predict future glucose trends precisely. To quantify the effect of meal intake on the quality of empirical dynamic models (EDM), changing meal conditions (e.g., the meal amounts and times variation, individual differences) were simulated to generate data. Both single-input single-output (SISO) and multi-input single-output...
Walking parameters (walking speed, stride period, walking distance) are very important for the stroke rehabilitation assessment and guide because the walking parameters of stroke patients in contrast to normal person change a lot and they are great quantitative indexes of walking capacity. In order to detect the stroke patients' walking parameters, a method of real-time walking parameters estimation...
Automatic reclosure is widely used in power system which can effectively reduce the influence of transient fault and improve power supply reliability. But, when re-closure is closed at the line which have permanent fault, the power system can be affected by the impulse fault current. The paper analyses transmission character of traveling wave generated by breaker and presents a method to judge fault...
This paper proposes a novel wall-following strategy for mobile robots. This strategy establishes the self-convergence mathematical model by analyzing the relationship between the motion characteristics of mobile robots and installation position of sensors. Different from conventional wall-following approaches that are mostly based on the multi-sensor information fusion technology, this strategy manages...
Distributed power generation technology is an important part of smart grid. Because of its clean and efficient characteristics, it has been recognized, and obtains a strong development. Henan is a population intensive province, and consumes more energy relatively. So developing a clean and efficient energy is necessary, in order to satisfy the demands. The problem can be solved with the use of distributed...
SCS-CN (Soil Conserve Service—Curve Number) model was used for calculating runoff volumes of different land uses and soil types in Xiamen Island based on GIS. By using spatial extension module, overlapping and rasterizing functions of ArcView, nitrogen and phosphorus loads are calculated and displayed as spatial maps. With 12 mm rainfall, Total nitrogen and phosphorus loads for this urban runoff of...
In this paper, we study the problem of effective keyword search over XML documents. We begin by introducing the notion of HFLCA(High Frequency Lowest Common Ancestor) to accurately and effectively answer keyword queries over XML documents by the meaningful trees rooted as HFLCA. Then, with the help of the DTD document, we propose an optimization strategy for speeding up the computation. We have conducted...
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