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Matrix multiplication (GEMM) is a core operation to numerous scientific applications. Traditional implementations of Strassen-like fast matrix multiplication (FMM) algorithms often do not perform well except for very large matrix sizes, due to the increased cost of memory movement, which is particularly noticeable for non-square matrices. Such implementations also require considerable workspace and...
This paper is focused on challenges related to an increased quantity of distribution energy resources connected to the distribution network within the context of newly defined requirements ENTSO-E, follow-up European standards TS 50549 and codes of distribution system operators on regulation of voltage through control of the reactive power in terms of P-Q diagram. A high number of connected and operated...
The paper discusses the impact of microgeneration on the energy quality in a low-voltage (LV) network. Expressions are formulated for obtaining voltage deviations and fluctuations caused by microgeneration sources. Simulations are carried out to predict the impact of microgeneration on voltage drops in nodes of low-voltage lines.
Gas-insulated metal-enclosed switchgear (GIS) is an important switching equipment in modern power system. Since GIS equipment has a fully enclosed structure, once failure occurs, it will always be followed by a huge economic loss and an adverse social impact. On-site lightning impulse (LI) test is very important to improve the quality of the GIS equipment since it is particularly sensitive to some...
Obtaining an unbiased data sample is an important task in the statistical analysis of experimental data. The unbiased data sample is a representative data sample. The natural desire is to obtain a representative data sample using computational methods. A procedure for adjusting the structure of the data sample in line with the structure of statistical population is called “correction of a data sample”...
Current mixed-signal BIST approaches are aimed to move test instrumentation on-chip to reduce the cost of test. However, this can result in a high overhead even for non-time critical DSP tasks that could be executed remotely if a suitable access was available. The new IEEE 1687-2014 standard provides such a portable and efficient infrastructure and can allow decoupling of digital and analog development...
The increasing industrial demand for low data-rate and low power networking protocols for IoT communications from past several years led to the development of ZigBee technology. As a result of advancement in VLSI technologies, development of more power efficient, accurate, and small digital ZigBee transmitter design has become achievable but yet challenging. This paper presents digital design and...
In a destabilizing attack against a power system, the adversary hacks into generators or load control mechanisms to insert positive feedback into the power system dynamics. The implementation of destabilizing attacks, both on the generation and load sides, have recently been studied. There are also recent advances on how to detect, i.e., realize the presence of, destabilizing attacks in power systems...
This paper proposes a Dynamic Regulation Market Mechanism (DRMM) that results in improved financial settlements for wholesale electricity markets. The DRMM dispatches control signals at the Tertiary Control (TC) level based on a co-optimization problem that jointly optimizes energy production and reserve capacity. At the Secondary Control (SC) level the DRMM dispatches control signals using an iterative...
In case of time-symmetric delta-pulse shaped perturbation, phase portrait of physical system simulated via the Chirikov standard map has an axial symmetry, while the Chirikov standard map does not. In this paper it is shown that a symmetric integration method applied to numerical simulation of system motion allows obtaining discrete maps with axial symmetry. A symmetric modification of the Chirikov...
Due to the increasing complexity of software systems, model-driven engineering has been introduced to shift the developer's focus from machine-centric program code to human-centric models of the software under development. In model-driven approaches, program code in conventional programming languages (e.g., C++, Java) is commonly generated from models and then compiled or interpreted. Intermediate...
Steam turbines can be damaged upon loss of steam flow while the generator remains connected to the power system. Reverse power relays are used to detect the motoring power into the electrical machine and open the generator main breaker to prevent damage from this abnormal operating condition. The motoring power for large steam turbines can be a very small fraction of the power rating, leading to sensitivity...
Variability is a fundamental issue which gets exponentially worse as CMOS technology shrinks. Therefore, characterization of statistical variations has become an important part of the design phase. Monte Carlo-based simulation method is a standard technique for statistical analysis and modeling of integrated circuits. However, crude Monte Carlo sampling based on pseudo-random selection of parameter...
Random number generators are an essential part of cryptographic systems. For the highest level of security, true random number generators (TRNG) are needed instead of pseudorandom number generators. In this paper, the stochastic behavior of the spin transfer torque magnetic tunnel junction (STT-MTJ) is utilized to produce a TRNG design. A parallel structure with multiple MTJs is proposed that minimizes...
In this paper, we propose a new generic construction of signatures from trapdoor commitments with strong openings in the random oracle model. Our construction is very efficient; signatures consist of just a single decommitment of the underlying commitment scheme. Furthermore, assuming the commitment scheme provides sufficiently strong statistical hiding and trapdoor opening properties, the reduction...
In this paper, we construct efficient and practical signature schemes which allows a tight reduction from security in the multi-user setting to standard hardness assumptions. Firstly, we show that, for a general class of signature schemes, which we denote key convertible schemes, it is possible to construct a tight reduction from multi-user security to single-user security. Combined with the well-known...
Renewable Energy Resources (RER), especially wind and solar energy resources, have been growing steadily, and supplying all electric power needs from renewable resources appears more achievable than ever. Solar energy has had the greatest growth rate among renewable energy resources in recent years. The main challenge of employing Photovoltaic (PV) systems is the intermittent nature of solar energy...
Ultra-low-power (ULP) sensor technologies for the future internet of things have presented challenges in ULP implementation of reference circuits while keeping traditional requirements of stable performance. For voltage reference circuits, as an essential block in SoCs to generate various internal supply voltages, the bandgap voltage-reference (BGVR) scheme has been widely used since it provides a...
The paper is devoted to a research of modern block cryptoalgorithms statistical secure. The influence of each nonlinear round function step on transformed sequence statistical properties is analyzed. Theoretical calculations of the minimum rounds quantity necessary for full information dispersion and hashing are performed. The experimental results of modern stochastic algorithms nonlinear function...
Software Defined Networking (SDN) is an emerging paradigm that allows network operators to have more control of their infrastructure. Control is achieved by decoupling control and data plane of the network. Controller is the place where all the intelligence of SDN resides; hence it is important to test the capabilities of the controller before deploying it in production networks. This paper presents...
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