Results 31 to 40 of about 1,379 (241)

An Affine Arithmetic-Based Model of Interval Power Flow With the Correlated Uncertainties in Distribution System

IEEE Access, 2020
An interval power flow (IPF) method that considers the interval correlations of input random variables is proposed to improve the calculation accuracy of IPF, i.e., as correlated distributed generations (DGs) and some correlated DGs-loads are integrated ...
Shipeng Leng, Kaipei Liu, Xiaohong Ran, Shuyao Chen, Xunyue Zhang   +4 more
doaj   +1 more source

Implementation and improvements of affine arithmetic

Nonlinear Theory and Its Applications, IEICE, 2015
Affine arithmetic is a well-known tool to reduce the wrapping effect of ordinary interval arithmetic. We discuss several improvements both in theory and in terms of practical implementation. In particular details of INTLAB's affine arithmetic toolbox are presented. Computational examples demonstrate advantages and weaknesses of the approach.
Rump, Siegfried M., Kashiwagi, Masahide
openaire   +2 more sources

Optimal scheduling method of regenerative electric heating for emergency residential building heating: An affine arithmetic‐based model predictive control approach

IET Energy Systems Integration, 2023
Residential heating faces the challenge of heating interruption when an electric power outage occurs. As a promising heating electrification form, regenerative electric heating (REH) equipped with thermal energy storage (TES) has the flexibility of ...
Jiarui Zhang, Yunfei Mu, Zeqing Wu, Zhe Liu, Yi Gao, Hongjie Jia, Hairun Li   +6 more
doaj   +1 more source

Affine mappings of translation surfaces: geometry and arithmetic

Duke Mathematical Journal, 2000
The main result of this paper is an explicit general formula for the quadratic constant, \(c(S)\), where \(S\) is a Veech surface. The proof is based on the counting of vectors in the orbit of a lattice which is reduced to a counting of horocycles in the hyperbolic plane.
Gutkin, Eugene, Judge, Chris
openaire   +2 more sources

Enhanced image security using residue number system and new Arnold transform

Jurnal Teknologi dan Sistem Komputer, 2021
This paper aims to improve the image scrambling and encryption effect in traditional two-dimensional discrete Arnold transform by introducing a new Residue number system (RNS) with three moduli and the New Arnold Transform. The study focuses on improving
Akinbowale Nathaniel Babatunde, Afeez Adeshina Oke, Abdulkareem Ayopo Oloyede, Aisha Oiza Bello   +3 more
doaj   +1 more source

Interval optimal power flow applied to distribution networks under uncertainty of loads and renewable resources

Journal of Modern Power Systems and Clean Energy, 2018
Optimal power flow (OPF) has been used for energy dispatching in active distribution networks. To satisfy constraints fully and achieve strict operational bounds under the uncertainties from loads and sources, this paper derives an interval optimal power
Pengwei CHEN, Xiangning XIAO, Xuhui WANG
doaj   +1 more source

An Uncertain Optimal Energy Flow Model for CCHP Campus Microgrid Using Parameterized Probability Boxes

Journal of Modern Power Systems and Clean Energy, 2023
Due to the uncertain fluctuations of renewable energy and load power, the state variables such as bus voltages and pipeline mass flows in the combined cooling, heating, and power campus microgrid (CCHP-CMG) may exceed the secure operation limits. In this
Shunjiang Lin, Xuan Sheng, Yuquan Xie, Yanghua Liu, Mingbo Liu   +4 more
doaj   +1 more source

How Affine Arithmetic Helps Beat Uncertainties in Electrical Systems [PDF]

IEEE Circuits and Systems Magazine, 2015
The ever-increasing impact of uncertainties in electronic circuits and systems is requiring the development of robust design tools capable of taking this inherent variability into account. Due to the computational inefficiency of repeated design trials, there has been a growing demand for smart simulation tools that can inherently and effectively ...
DING, TONGYU, TRINCHERO, RICCARDO, Manfredi, Paolo, STIEVANO, IGOR SIMONE, CANAVERO, Flavio   +4 more
openaire   +3 more sources

Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +2 more
wiley   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source