Separation of identifier and locator provides good conditions of routing scalability and mobility for Internet routing and IP addressing. Based on the idea of identifier and locator separation, in this paper we introd...
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The purpose of this research was to develop a combined sense system that uses both force feedback and visual feedback to determine the shape of the microscopic features of a microsample. It is thought that the efficie...
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This paper presents a new pipeline inspection robot with a linkage type mechanical clutch, which is designed for inspection of pipelines with 100mm diameter. This robot has three powered wheel chains each of which has...
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This paper presents a new pipeline inspection robot with a linkage type mechanical clutch, which is designed for inspection of pipelines with 100mm diameter. This robot has three powered wheel chains each of which has a mechanical clutch. The mechanical clutch is designed by using a parallel linkage mechanism. The kinematic model of the pipeline inspection robot is driven and its proto type has been developed. The performance of this robot system is verified by both simulation and experimentation.
Digital libraries have shouldered the mission of preserving and spreading human culture in the era of information. However, knowledge extraction for digital libraries is not well studied, and that holds back the role ...
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Digital libraries have shouldered the mission of preserving and spreading human culture in the era of information. However, knowledge extraction for digital libraries is not well studied, and that holds back the role promotion of digital libraries from information collector to knowledge provider. This paper presents an ontology-based approach, which extracts detailed attributes of Traditional Chinese Medicine (TCM) from digitized textbooks. According to the characters of digitized textbooks, we propose an extraction ontology that is compatible with both textbook extraction and TCM theory. To improve extraction tolerance for OCR errors, we extract features of different aspects. Finally, a structured pattern based extraction method is adopted to minimize extraction supervision. The result shows that our method is a practical and robust exploration to address the problem of information extraction for digitized textbooks of TCM.
Most routing protocols in MANETs don't scale well in networks with large numbers of nodes where the scalability of the routing protocols plays a vital role. And it is well known that these routing protocols usuall...
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In this paper, we revisit the energy-based swing-up control for the Pendubot, a two-link underactuated planar robot with a single actuator at the base joint (shoulder). Different from previous energy-based control sol...
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In this paper, we revisit the energy-based swing-up control for the Pendubot, a two-link underactuated planar robot with a single actuator at the base joint (shoulder). Different from previous energy-based control solutions, we obtain the following results: 1) we provide a bigger control parameter region for achieving the control objective. Specifically, we present a necessary and sufficient condition for avoiding the singular points in the control law. We obtain a necessary and sufficient condition on the control parameters such that the up-down equilibrium point (at which links 1 and 2 are in the upright and downward positions, respectively) is the only undesired closed-loop equilibrium point. 2) We prove that the up-down equilibrium point is saddle (hyperbolic and unstable) via an elementary proof by using the Routh-Hurwitz criterion to show that the Jacobian matrix valued at the point has two and two eigenvalues in the open left- and right-half planes, respectively. This paper prove that the Pendubot will eventually enter the basin of attraction of any stabilizing controller for all initial conditions with the exception of a set of Lebesgue measure zero provided that these improved conditions on the control parameters are satisfied. The simulation results are provided to validate these results.
Delay Tolerant Mobile Networks (DTMNs) focus on scenarios where most of the time contemporaneous end-to-end paths between source and destination do not exist, and mobility should be explored for message delivery. Ant ...
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A low-voltage, low-power, wide gain-range variable gain amplifier (VGA) design has been proposed. To provide wide gain range feature, the proposed VGA utilizes a novel pseudo-exponential function. The design synthesis...
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ISBN:
(纸本)9789746724913
A low-voltage, low-power, wide gain-range variable gain amplifier (VGA) design has been proposed. To provide wide gain range feature, the proposed VGA utilizes a novel pseudo-exponential function. The design synthesis is simplified and optimized using gm=ID method which enables us to characterize transistors in any operating region based on their g m=ID and VGS relation. As the result, in CMOS 90nm technology under 1.2V supply voltage the proposed VGA has 75dB gain-range over 0.81V control voltage range, with 30MHz-184.8MHz bandwidth, and 0.72mW power consumption.
Although biometrics technology has progressed substantially, its performance is still to be improved for real applications. This paper aims to improve the accuracy of personal identification, when only single sample i...
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Although biometrics technology has progressed substantially, its performance is still to be improved for real applications. This paper aims to improve the accuracy of personal identification, when only single sample is registered as template, by integrating multiple hand-based biometrics, i.e. palmprint and finger-knuckle-print. To make fusion much easier, the same feature, so called fusion code, and decision level fusion strategy are used. Experimental results show that much better performance than single modal biometrics has been achieved.
Field programmable gate arrays (FPGAs) are widely used in building systems-on-Programmable-Chips (SOPCs) since they contain plenty of reconfigurable heterogeneous resources providing the facility to implement various ...
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Field programmable gate arrays (FPGAs) are widely used in building systems-on-Programmable-Chips (SOPCs) since they contain plenty of reconfigurable heterogeneous resources providing the facility to implement various intellectual property cores. However, with the shrinking device feature size and the increasing die area, nowadays FPGAs can be deeply affected by the errors induced by electromigration and radiation, which results in challenges of building reliable SOPCs. In this paper, a SOPC implementing a smart 1553B bus node is presented to investigate the challenges and illustrate a feasible approach for building a complex system aimed at high reliability and low recovery latency on a commercial FPGA. First, a general reliability model, the DomainPartition (DP) model, is introduced to formulate the SOPCs which contain multiple alternative configurations proving the fault recovery capability. The assignment of the alternative configurations for maximizing the reliability is then determined according to a first-order optimal solution under the DP framework. Finally, the blind reconfiguration technique is used to reduce the recovery latency. The experiments based on a Monte Carlo simulation approach are carried out to evaluate the reliability and the latency. The obtained results show that higher reliability is attainable with less overhead than the generic triple-modular redundancy method.
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