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Recently, a hybrid deep neural network/i-vector framework has been proved effective for speaker verification, where the DNN trained to predict tied-triphone states (senones) is used to produce frame alignments for sufficient statistics extraction. In this work, in order to better understand the impact of different phonetic precision to speaker verification tasks, three levels of phonetic granularity...
Hidden failure of protection relays is one of the important reasons of cascading failure and disconnection of power systems. It is significant to improve the reliability for protection. So far, the hidden failure remains undetected. An analytic model based on protection signals is proposed to detect hidden failures of protection relays in this paper. In this model, fault location, protection start...
Traditional spectrum image analysis method stays in pixel-level image analysis, so its analysis results are not accurate enough. Hyper-spectrum image has more spectrum bands, thus making it possible to analyze image in sub-pixel level. The method of hyper-spectrum data analysis contains linear model and nonlinear model. This article combines Approximate Hapke Model and single physical volume method...
In this letter, an analytical model is proposed for 3-channel-based neighbor discovery in Bluetooth Low Energy (BLE) networks. The model can be used to determine some important performance metrics, such as average latency or average energy consumption during the course of discovering neighbors. Since intermittent connections are frequently encountered in practical scenarios of BLE, the modeling results...
Reasonably arranging the occupation plan of arrival and departure track is the key of compiling stage plan. In order to arrange arrival and departure track rationally and effectively, building utilization's mathematical model is needed. The model of the occupation plan of arrival and departure track in this paper is a nonlinear integer programming model, so it is difficult to be solved directly. For...
This thesis attempts to study the consumer satisfaction of communications enterprises from the perspective of experiential marketing. In order to make the study more targeting and convincing, this thesis selects China Mobile as its studying object, adopts theories from management, marketing, consumer behavior and other courses theories, and employs the research method of integrating theoretical and...
Data assimilation is important to the improvement of numerical weather prediction (NWP). Recently, much progress has been made in the direct assimilation of satellite radiance in NWP. In order to use radiance from the infrared channels of the visible and infrared radiometer (VIRR) on FY-3A, biases between the observed radiances and those simulated from model must be corrected. Using the radiosonde...
It is important for the improvement of numerical weather forecast accuracy to reseach the simulation error of rapid radiative transfer model. Using the radiosonde data as the input of rapid radiant transfer model CRTM, the simulation error of infrared channels observation of VIRR on FY-3A is analyzed. The distribution of model biases in radiance of three infrared channels are approximate normal ditribution,...
This paper considers making balance on the tradeoff between power consumption and extra delay in WiMAX Power Saving. Though it seems quite well understood in case of Poisson traffic, the tradeoff between energy and delay has not been adequately studied in existing literature. We therefore investigate in this work to propose a mechanism of tuning the tradeoff such that users/applications can make their...
Transaction of workflow systems composition has long-running feature which a global-transaction is divided into several sub-transactions. When the sub-transactions fail, it must back to the beginning of them, consistency property is preserved by using compensating transactions, which semantically undo the effects of the completed sub-transactions. However, the cost of compensation may be expensive...
The application of virtual maintenance technology can find the problems in products maintainability design as early as possible, assuring the qualities and reducing the life-cycle cost. So it is very important for the design of complicated equipments such as aircraft. Aimed at the requests of aircraft maintainability design, this paper compared two kinds of virtual maintenance modes, non-immersive...
RET (reliability enhancement testing) is the most advanced technology from western countries. RET's concept, process and stress limit classification were introduced. The basic theory of RET was explained. Interference model was introduced into RET, to settle the problem that RET couldn't be analyzed quantitatively. The failure mechanism occurred in RET was analyzed by using interference model. By...
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