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Non-malleable commitments are a fundamental cryptographic tool for preventing against (concurrent) man-in-the-middle attacks. Since their invention by Dolev, Dwork, and Naor in 1991, the round-complexity of non-malleable commitments has been extensively studied, leading up to constant-round concurrent non-malleable commitments based only on one-way functions, and even 3-round concurrent non-malleable...
Circuit Breaker (CB) reliability is needed to maintain the availability of power transmission system. However, its reliability decreases with time due to ageing process. In order to maintain availability of power system, PLN established a refreshment regulation of high voltage equipment. The refreshment criteria are based on technical, age, and risk consideration. This paper discusses parameters used...
Capacitive current switching test is an important test for high voltage ac circuit breaker. In recent years, many problems, such as frequent restrikes under special environment condition and non-sustained disruptive discharge (NSDD) and restrike after more than one cycles of recovery voltage, were met when ultra (extra)-high voltage circuit breaker switching capacitive current in system and test....
The shock absorber Electro-hydraulic Servo-testing system conformed to national standard QC/T 545–1999 is designed, error compensating PID regulation method which is appropriate for signal condition was applied. According to use the MTS407 controller and LabVIEW virtual instrument software, implement dynamometer diagram testing, speed diagram testing, friction diagram testing, temperature wearing...
This paper describes the design and testing process of low power current sensors using PCB rogowski-coil for high current application. The design and testing process of PCB rogowski-coil transducer and electronic circuit are explained in deeply analyze based on the physical structure. It also reveals the linearity and error rates of PCB rogowski-coil current sensors. Tests carried out using Current...
In this paper, we propose a pixel current calibration technique for reducing the fixed pattern noise due to the deviations in the bolometer resistance. Usually, it is difficult to calibrate the fixed pattern noise of a bolometer array. The principle of the pixel current calibration technique is that the dark current of a reference pixel is subtracted from the dark current of each active pixel. To...
Precise control methods of the electric drives with induction machines like field oriented control (FOC) or direct torque control (DTC) need an accurate model of the machine they control. Certain parameters of the model have to be obtained with sufficient accuracy before the drive can be put into the operation. This article concerns an offline parameter identification method that is suitable for on-site...
Bonding technology using anisotropic conductive paste shows great promise to achieve the denser integration schemes that are required for the application of high resolution ultrasonic imaging. A design of experiments has been carried out to characterize and optimize a flip-chip bonding technology that utilizes a novel, magnetically aligned anisotropic conductive paste. This optimized process has the...
By using a Papkovich Neuber potential based 3D numerical contact modeling method [1], it has been shown that using a wave structured contact surface topography can reduce contact interface resistance by a factor of 2 at a given normal load. It has been proposed that a wave structured topography can be used to reduce contact normal force as a method to reduce connector mating forces. Since there is...
Under today's global market requirements, products may be manufactured in a different country than where they are used, and may thus be manufactured to a different standard than that which is required for its intended use. It is important to understand different requirements in order to determine if the product can be used. Considerable alignment between the National Electrical Manufacturers Association...
Since the introduction of the IEEE C37.20.7 standard and predecessor documents for testing switchgear under arcing fault conditions, the use of arc-resistant equipment has increased and is now the standard in many companies in the petrochemical and oil industries. Equipment designs have evolved to be more robust under fault conditions to meet the testing criteria, but there is limited knowledge of...
There are several works on the formalization of security protocols and proofs of their security in Isabelle/HOL; there have also been tools for automatically generating such proofs. This is attractive since a proof in Isabelle gives a higher assurance of the correctness than a pen-and-paper proof or the positive output of a verification tool. However several of these works have used a typed model,...
Spin based memories have garnered major interest in recent times. With all of the alluring features like-non-volatility, zero-stand by leakage and dense integration in array, they suffer from not having satisfactory distinguishability between stored memory states. Recently, a novel approach of using Phase transition materials (PTM) to assist magnetic tunnel junction (MTJ) in spin memories has been...
This paper introduces the realization and calibration of complex impedance standard which is a kind of active simulation impedance. As a new calibration equipment for digital bridge, complex impedance standard can simulate any amplitude or angle of complex impedance by generating voltage and current to calibrate digital bridge in the whole complex plane, which can make up for deficiency in the calibration...
Based on measurement of AC impedance, this paper presents a new method for evaluating measurement uncertainty of AC impedance. The method of equal potential measurement is introduced, which can calibrate AC impedance and trace to voltage ratio standard and phase standard by adjusting the current in the circuit. What's more, the measurement data of 1 kHz, 100 Ω is given in the paper, whose measurement...
The effects of environment pollution, climate change, and extensive use of fossil fuel for transportation are driving the trend to replace internal combustion engine vehicles by Electric Vehicles (EVs). One of the main concerns regarding the increased deployment of EVs is the effect on the grid. In contrast, EVs can provide opportunities to support the grid with Smart charging and Vehicle to Grid...
This paper reviews performance factors for comparing soft magnetic materials, including components subject to high frequency ac winding resistance effects. These concepts are extended in order to define the ranges in which they apply and provide a more direct comparison between the different ranges. The effect of permeability on component performance factors is investigated, showing that even low...
In 3DIC design, we may face the problem in manufacturing faults of through silicon vias (TSVs) and microbumps, and it will cause insufficient power delivery and eventually result in fatal error of functioning. In this work, we propose a power TSV/microbump fault tolerance scheme to resolve this issue. First, we use a fast heuristic to predict the worst IR-drop distribution under a given faulty rate...
It is common to assume that there is only one degradation mechanism in the system in recent works on prognostics focusing on estimation of the remaining useful life (RUL) of an electromechanical system. However, there are cases in which the system may be subjected to more than one failure (degradation) mechanisms due to different stress factors, types of components and their interactions with one...
In this work, HfO2 based resistive random access memory (RRAM) is fabricated and 3-bit storage capacity per cell is demonstrated under both DC and AC mode. In the AC mode, a new operation scheme of balancing set process and reset process is proposed to improve the resistance distribution uniformity (relative standard deviation about 21.1%). The relatives between set and reset parameters are also discussed...
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