One of the current challenges in the development of robot control systems is making them capable of intelligent and suitable responses to changing environments. But, the control of the robot's behavior in uncertai...
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ISBN:
(纸本)9780769542638
One of the current challenges in the development of robot control systems is making them capable of intelligent and suitable responses to changing environments. But, the control of the robot's behavior in uncertain and dynamic environments is very challenging when the problem is how to guarantee the robot's safety by minimizing the interaction with other actors. The most popular methods are based on reactive local navigation schemes that tightly couple the robot actions to the sensor information. These approaches are well based on distance between the robot and the obstacles. This information does not allow the robot to make an intelligent decision while it navigates in unknown environments. Whereas, the robot needs to anticipate environment evolution in order to minimize interaction and avoid conflict with other agents. In this paper, we present a multi-agent simulation model of an autonomous robot in dynamic and uncertain environments. We focus on cases of interactions between agents sharing the same space. The robot should minimize the conflict with other agents when it navigates headed for its goal. Our model is based on fuzzy logic technique in order to deal with the uncertainty of perception.
In this paper, the impact of different dynamic logic design styles is evaluated considering as benchmark a fast carry-skip adder. Four different adder designs were implemented in standard domino, footless domino, data...
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ISBN:
(纸本)9781612841519
In this paper, the impact of different dynamic logic design styles is evaluated considering as benchmark a fast carry-skip adder. Four different adder designs were implemented in standard domino, footless domino, data driven dynamic, and dynamic hybrid (standard domino + data driven dynamic) logic design styles, by exploiting the STMicroelectronics 45nm 1V CMOS technology. When applied to a 32-bit carry-skip adder, the data driven dynamic approach assures an energy-delay product 29%, 33% and 39% lower than the standard domino, footless domino, and dynamic hybrid implementations, respectively.
This work presents the concept of Continuous Search (CS), which objective is to allow any user to eventually get their constraint solver achieving a top performance on their problems. Continuous Search comes in two mo...
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ISBN:
(纸本)9780769542638
This work presents the concept of Continuous Search (CS), which objective is to allow any user to eventually get their constraint solver achieving a top performance on their problems. Continuous Search comes in two modes: the functioning mode solves the user's problem instances using the current heuristics model;the exploration mode reuses these instances to train and improve the heuristics model through Machine Learning during the computer idle time. Contrasting with previous approaches, Continuous Search thus does not require that the representative instances needed to train a good heuristics model be available beforehand. It achieves lifelong learning, gradually becoming an expert on the user's problem instance distribution. Experimental validation suggests that Continuous Search can design efficient mixed strategies after considering a moderate number of problem instances.
The Single Electron Nano-Devices (SEnds) are attractive candidates for post-CMOS VLSI era mainly due to its very low power consumption. In this paper, the Linear Threshold Gate (LTG) SEnd is reviewed. An Artificial Ne...
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ISBN:
(纸本)9781612841519
The Single Electron Nano-Devices (SEnds) are attractive candidates for post-CMOS VLSI era mainly due to its very low power consumption. In this paper, the Linear Threshold Gate (LTG) SEnd is reviewed. An Artificial Neural Network (ANN) Majority logic Gate (MLG) with 3 inputs (MLG3) is proposed. The MLGs with three and four inputs are implemented using LTG and SET inverter SEnds. The detailed parameters for all used devices as well as the corresponding SIMON 2.0 simulation results of these MLGs are included.
This paper illustrates some design strategies for the design of mixed analog-digital integrated circuits in CMOS technology. In mixed-signal systems, crosstalk from switching logic gates can disturb the operation of a...
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ISBN:
(纸本)9781612841519
This paper illustrates some design strategies for the design of mixed analog-digital integrated circuits in CMOS technology. In mixed-signal systems, crosstalk from switching logic gates can disturb the operation of analog circuitry. Therefore, it is necessary to take into account digital switching noise from early stages of design, by means of a suitable model. The analog designer should select the most suitable architectures with respect to crosstalk robustness. Finally, physical design must be optimized for the fabrication technology, to ensure a proper isolation between digital and analog sections.
Estimating agent's skill ratings from team competition results has many applications in the real world. Existing models assume skills are the same for all contexts. However, skills are context-sensitive in a varie...
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ISBN:
(纸本)9780769542638
Estimating agent's skill ratings from team competition results has many applications in the real world. Existing models assume skills are the same for all contexts. However, skills are context-sensitive in a variety of cases. In this paper, we present a Factor-Based Context-Sensitive Skill Rating System(FBCS-SRS). Instead of estimating agent skills under every context, which is hard due to data sparisity, we propose a factor model where individual skills are modelled by the inner product of an agent factor vector and a context factor vector. Collapsed Gibbs sampling is used for approximate inference. We formulate the problem of sampling linear constraint factors as a variant of MAX-SAT, and solve it by linear programming algorithms. We validate our model on two real-world datasets. Experiments show that FBCS-SRS achieves significantly higher prediction accuracy than other skill rating systems. The improvement is even more obvious when there are a lot of contexts.
Side channel attacks (SCAs) exploit the fact that security IC physical implementation of a cryptographic algorithm can leak information of the secret key. One of the most important SCA is Differential Power Analysis (...
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ISBN:
(纸本)9781612841519
Side channel attacks (SCAs) exploit the fact that security IC physical implementation of a cryptographic algorithm can leak information of the secret key. One of the most important SCA is Differential Power Analysis (DPA), that uses the power consumption dependence with the data processed to reveal critical information. To protect security devices against this issue, differential logic styles with constant power dissipation have been widely used. However, the right use of such circuits for secure applications needs not only a fully symmetric structure, but also removing any memory effect that could leak information. We propose an improved memory-less fully symmetric Xor/Xnor pull-down logic configuration, to be used with any differential technique, for immediate application in cryptographic secure applications.
InP-based double-barrier resonant tunnelling diodes have been optimized for high speed digital circuits. We present the scalability of high current density (J(P) approximate to 150 kA/cm(2)) resonant tunnelling diodes...
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ISBN:
(纸本)9781424459209
InP-based double-barrier resonant tunnelling diodes have been optimized for high speed digital circuits. We present the scalability of high current density (J(P) approximate to 150 kA/cm(2)) resonant tunnelling diodes in the sub-micrometer electrode area range. A small signal equivalent circuit has been developed and its parameters are precisely deduced from DC and RF measurements. Based on this model the scalability has been investigated with emphasis on a low but also scalable series resistance in order to keep the peak voltage constant. A comparison of dry and wet etching methods in the device fabrication will be presented. A multiple mesa concept has been adopted to provide reliable scalability at low emitter area (A(E) < 1 mu m(2)).
In this paper we make the design, the simulation and the implementation of a NoC (Network on Chip) 2-ary 4-fly in order to evaluate the speed up of an application with different NoC sizes. For the conception of the No...
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ISBN:
(纸本)9781612841519
In this paper we make the design, the simulation and the implementation of a NoC (Network on Chip) 2-ary 4-fly in order to evaluate the speed up of an application with different NoC sizes. For the conception of the NoC, we use the tool NoCcompiler from Arteris Company. To test the performance of this NoC we integrate it as an IP (Intellectual Property) into an EDK project where masters are 16 Microblazes processors and slaves are 16 blocks memories. As an application, we choose the parallel programming to compute a filter Harris of an image 256x256. This work is implemented on Eve platform emulation called Zebu UF4. Results have proved the efficiency of this parallel architecture with a reduction equal to 90% of the execution time. The non linearity of the speed up's curve is coherent with the theorical modelisation and simulation presented in[1].
In this paper we propose a new algorithm for the least square fitting of ellipses from scattered data. Originally based on the one proposed by Fitzgibbon et Al in 1999, our procedure is able to overcome the numerical ...
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ISBN:
(纸本)9780769542638
In this paper we propose a new algorithm for the least square fitting of ellipses from scattered data. Originally based on the one proposed by Fitzgibbon et Al in 1999, our procedure is able to overcome the numerical instability of that algorithm. We test our approach versus the latter and another approach with different ellipses. Then, we present and discuss our results.
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