In order to integrate identity authentication and key agreement, a novel academic thought is set out, a fasting one-way accumulator is constructed, and a fasting one-way accumulator-based key management protocol is put forward for Heterogeneous Sensor Networks (HSNs). The experiments and analysis show that the proposed protocol not only implements identity authentication function, but has high ...

A large-scale integrated-circuit chip has been designed under the sponsorship of the Air Force Avionics Laboratory. The chip was developed as part of a logic synthesizer effort of the Design Automation group at Litton Systems, Inc., Guidance and Control Systems Division. It was designed as a type or category to be multiply used with one other gating type chip whose format is prescribed by the l...

Arithmetic function modules which are available in many circuits can be utilized to generate test patterns and compact test responses. Recently, it was shown that an adder or an accumulator cannot be used as a bit serial test pattern generator due to the poor random properties of the generated sequences. Thus, accumulator-multiplier or adder-multiplier structures have been proposed. In this pap...

One way to approximate inference in richly-connected graphical models is to apply the sum-product algorithm (a.k.a. probability propagation algorithm), while ignoring the fact that the graph has cycles. The sum-product algorithm can be directly applied in Gaussian networks and in graphs for coding, but for many conditional probability functions including the sigmoid function direct application ...

A pulsed source of positrons has been developed which may be useful for antihydrogen (Iq) formation because it is portable when compared to accelerator-based sources. This positron accumulator uses a Penning-style trap to collect moderated positrons from a radioactive source. The positron pulses may be emitted with repetition rates in the range of 50-1000 Hz, which is appropriate for I:I produc...

Economical design with sufficient fracture resistance is of high importance in any offshore pipeline projects. Using an Engineering Critical Assessment (ECA), alternate acceptance criteria for pipeline girth weld inspection can significantly reduce the cost of constructing of offshore oil and gas pipeline by minimizing unnecessary repairs. Offshore pipelines consist of short pipeline segments c...

Free-span occurs normally in a pipeline at uneven seabed, dynamic seabed and pipeline crossing. Free spanning in pipeline causes Vortex Induced Vibration (VIV) fatigue, fracture and bursting. In this paper, a pipeline located in South Pars Gas Field is assessed against local buckling and VIV fatigue using probability of failure theory based on the recommended methodology by Det Norske Veritas (...

This work presents a technique for computing dense disparity maps from a binocular stereo camera system. The methods are applied in an Augmented Reality setting for combining real and virtual worlds with proper occlusions. The proposed stereo correspondence technique is based on area matching and facilitates an efficient strategy by using the concept of a three-dimensional similarity accumulato...

This paper presents a generalization of the race models involving parallel channels. Previous versions of this class of models involved only serial channels, either dependent or independent. Further, concrete applications of these models did not involve variability in the accumulator size (Logan, 1988) or were based on a specific distribution (Bundesen, 1990). We show that the distributions of ...