The use of the 3-D electromagnetic program, TRIFOU, for the solution of an eddy-current problem is described. The emphasis is on the facilities offered by the model (formulation) and by the program to solve a 3-D indu...
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The use of the 3-D electromagnetic program, TRIFOU, for the solution of an eddy-current problem is described. The emphasis is on the facilities offered by the model (formulation) and by the program to solve a 3-D industrial problem with a reasonable number of elements. Displays of eddy-current distributions are shown.< >
We explore the correctness of the Certified Propagation Algorithm (CPA) [6,1,8,5] in solving broadcast with locally bounded Byzantine faults. CPA allows the nodes to use only local information regarding the network to...
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We explore the correctness of the Certified Propagation Algorithm (CPA) [6,1,8,5] in solving broadcast with locally bounded Byzantine faults. CPA allows the nodes to use only local information regarding the network topology. We provide a tight necessary and sufficient condition on the network topology for the correctness of CPA. (C) 2014 Elsevier B.V. All rights reserved.
In this paper we apply a modern signal processing approach for the determination of the Rabi frequency value and some frequency shifts in a Cs beam standard. The Rabi frequency is computed by two new methods from a si...
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In this paper we apply a modern signal processing approach for the determination of the Rabi frequency value and some frequency shifts in a Cs beam standard. The Rabi frequency is computed by two new methods from a single experimental Ramsey pattern. These methods are based on the derivative and the cepstrum properties of the Ramsey fringes, Then we show how some integrals over the time of flight distribution can be computed from a Ramsey record without the knowledge of the time of Right distribution, As an example the second order Doppler and the phase shift are computed directly from one Ramsey pattern.
A computationally efficient method is presented for calculating field pressure distributions from a circular phased array transducer. This method employs a form of the rectangular radiator approach modified for use wi...
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A computationally efficient method is presented for calculating field pressure distributions from a circular phased array transducer. This method employs a form of the rectangular radiator approach modified for use with the geometry of a circular array. The validity of this approach is verified through comparisons with experimental data from a circular phased array. The results show that the location and amplitude of the grating lobes and main lobe width can be predicted with reasonable accuracy using this method.
The problem of real-time leader election in a shared memory environment requires a single processor to be distinguished as the leader and requires an upper bound on the duration for which no leader is present. This pr...
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The problem of real-time leader election in a shared memory environment requires a single processor to be distinguished as the leader and requires an upper bound on the duration for which no leader is present. This processor can be used to provide services that must be continuously available. We propose an improved protocol, which requires O(log N) time and O(N/log N) variables.
We discuss the design of a multicast event distribution service intended to support extremely large-scale event distribution. To date, event notification services have been limited in their scope due to limitations of...
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We discuss the design of a multicast event distribution service intended to support extremely large-scale event distribution. To date, event notification services have been limited in their scope due to limitations of the infrastructure. At the same time, Internet network and transport layer multicast services have seen limited deployment due to lack of user demand (with the exception more recently of streaming services, e.g., on Sprint's U.S. core network and in the Internet II). Recent research in active networks and reflective middleware suggests a way to resolve these two problems at one go. The goal of this article is to describe a reflective middleware system that integrates the network, transport, and distributed middleware services into a seamless whole. The system integrates this "low-level" technology into an event middleware system, suitable for telemetry, novel mobile network services, and other as yet unforeseen applications.
The magnetization M and the magnetic field intensity H are conventionally used as implementational variables in the Preisach model. However, the distribution function obtained from M-H curves is strongly localized, ca...
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The magnetization M and the magnetic field intensity H are conventionally used as implementational variables in the Preisach model. However, the distribution function obtained from M-H curves is strongly localized, causing difficulty during iterative computations. In this paper, a method that uses the magnetization M and the magnetic nux density B instead of M and H in the Preisach model is proposed. The Preisach distribution function and the Everett function obtained from M-B curves are compared with those of the conventional method. The former functions are much smoother than the latter, and this improves convergence and efficiency in computations because the slope of the M-B curves is lower than that of the M-H curves. A two-permanent-magnet system, as an example, is chosen and analyzed. The results are in good agreement with experiment.
A two's complement bit-serial arithmetic unit (Au) that operates at very high clock rates is presented in this paper. It is designed for a bit-serial SIMD data-path architecture and can perform several different a...
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A two's complement bit-serial arithmetic unit (Au) that operates at very high clock rates is presented in this paper. It is designed for a bit-serial SIMD data-path architecture and can perform several different arithmetic operations;for example sum-of-two-products. In order to attain a very high clock rate, the AU circuitry employs the true single-phase clocking (TSPC) technique, which encourages a high degree of pipelining. A 5-bit AU chip on an active area of 0.073 mm2 has been fabricated in a 1.0-mum standard CMOS process. Tests have verified correct chip operation up to a clock rate of 470 MHz at V(dd) = 5 V. At this frequency the AU power consumption is 11.5 mW.
This short note shows how a simple extension of object types with consensus number 2 boosts them to an infinite consensus number. This extension is a simple embedding of a shared memory write within the base operation...
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This short note shows how a simple extension of object types with consensus number 2 boosts them to an infinite consensus number. This extension is a simple embedding of a shared memory write within the base operation defining the corresponding type with consensus number 2. The style of this note is voluntarily informal. (c) 2009 Elsevier B.V. All rights reserved.
Several types of board computers, such as VME, CompactPCI, and so on, are used in high energy physics experiments. They are usually used as a diskless system booted through a network. Such an architecture is easy to u...
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Several types of board computers, such as VME, CompactPCI, and so on, are used in high energy physics experiments. They are usually used as a diskless system booted through a network. Such an architecture is easy to use once the setup is completed. However, if the network goes down, the system can no longer be started up. One of the solutions for this problem is to use an on-board flash memory device as a boot device. As the basic architecture of a flash memory-based data acquisition system, we have developed a networked on-board Linux environment (NOBLE) distribution package in order to ensure easy installation of an operating system on a flash memory device.
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