Philip Coppens, Anatoliy Volkov,
... interaction between non-overlapping densities, the agreement with theory is much improved when a newly developed hybrid EP/MM (exact potential/multipole model) method is employed.
Tópico(s): Inorganic Fluorides and Related Compounds
2004 - Wiley | Acta Crystallographica Section A Foundations of Crystallography
Magnus Rattray, Oliver Stegle, Kevin Sharp, John Winn,
... Bayes (VB) algorithms as well as a novel hybrid of VB and Expectation Propagation (EP). For the case of a single latent factor we derive a theory for learning performance using the replica method. We ...
Tópico(s): Bayesian Methods and Mixture Models
2009 - IOP Publishing | Journal of Physics Conference Series
... EP) composite plates. The thermal stability equations of hybrid SMA/CNT/GF/EP composite plates are derived based on the first-order shear deformation theory (FSDT), and solved using generalized differential quadrature (GDQ) method. The influences of CNTs and SMA wires on the buckling temperature of the hybrid composite plates are assessed for different geometric parameters, ...
Tópico(s): Nonlocal and gradient elasticity in micro/nano structures
2022 - Taylor & Francis | Mechanics of Advanced Materials and Structures
Qimin Yan, Patrick Rinke, M. Winkelnkemper, A. Qteish, D. Bimberg, Matthias Scheffler, Chris G. Van de Walle,
... bandgaps, crystal-field splittings, effective masses, Luttinger, and EP parameters) and strain deformation potentials for MgO, ZnO, and CdO in the wurtzite phase. To overcome the limitations of density-functional theory in the local-density and generalized gradient approximations, we employ a hybrid functional as well as exact-exchange-based quasiparticle ...
Tópico(s): Physics of Superconductivity and Magnetism
2012 - American Institute of Physics | Applied Physics Letters
Produção Nacional
Revisado por pares
Jing Hong, Tong Wu, Haiyang Wu, Birong Zeng, Shanni Zeng, Ting Chen, Xiutong Wang, Zhenwu Lu, Conghui Yuan, Balaji Krishnasamy, Denise Freitas Siqueira Petri, Lizong Dai,
... It showed that flammable pyrolysis products released from EP during combustion were distinctly inhibited because Ag nanoparticles could catalyze the conversion of flammable gas CO to nonflammable CO2, which were verified by the density functional theory (DFT) calculations. It was assumed that halloysite-based hybrid flame retardant could have an impact on toxicity- ...
Tópico(s): Polymer Nanocomposites and Properties
2020 - Elsevier BV | Chemical Engineering Journal
Sai Ho Ling, Herbert Ho‐Ching Iu, F.H.F. Leung, K.Y. Chan,
... the parameters of the proposed WNN. The proposed hybrid PSO incorporates a wavelet-theory-based mutation operation. It applies the wavelet theory to enhance the PSO in more effectively exploring the solution space to reach a better solution. A case study of MFD-EP is employed to demonstrate the effectiveness of the ...
Tópico(s): Color Science and Applications
2008 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Industrial Electronics
Tomasz G. Smolinski, Grzegorz M. Boratyn, Mariofanna Milanova, Jacek M. Żurada, Andrzej Wróbel,
... those components that provide a substantial discernibility between EPs of different groups are relevant. In this paper, we propose an approach based on the Rough Set theory’s (RS) feature selection mechanisms to deal with this problem. We design an EA and RS-based hybrid system capable of signal decomposition and, based on ...
Tópico(s): Neural dynamics and brain function
2002 - Springer Science+Business Media | Lecture notes in computer science
Weiyuan Tang, Xue Jiang, Kun Ding, Yi-Xin Xiao, Zhao-Qing Zhang, C. T. Chan, Guancong Ma,
... in non-Hermitian systems. We demonstrate with both theory and acoustic experiments an "exceptional nexus" (EX), which is not only a higher-order EP but also the cusp singularity of multiple exceptional arcs (EAs). Because the parameter space is segmented by the EAs, the EX possesses a hybrid topological invariant (HTI), which consists of distinct winding ...
Tópico(s): Quantum chaos and dynamical systems
2020 - American Association for the Advancement of Science | Science
Wei Huang, Xinwei Miao, Sun Yu-Jiao, Reng Shanshan,
... based on the test results and the damage theory and considering the coupling relationship between plasticity and damage, a damage constitutive model was proposed for hybrid fibre-reinforced EPS lightweight aggregate concrete under uniaxial compression.
Tópico(s): Structural Behavior of Reinforced Concrete
2020 - Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering i | Tehnicki vjesnik - Technical Gazette
Majid Mirzaee, Abdolvahab Seif, Alimorad Rashidi, Pier Luigi Silvestrelli, Ziyang Zhou, Sepideh Pourhashem, Jizhou Duan, Maryam Sirati Gohari,
... day and 28 days, respectively. Furthermore, density functional theory (DFT) alongside the experimental investigations proves the mechanisms involved in corrosion protection properties through considering interactions and electronic properties. For EP/Fh-BCNNS@F-ZnO nanohybrid, the value of Z f =0.01 Hz of EP/Fh-BCNNS@F-ZnO hybrids after 1 day and 4 weeks of immersion, ...
Tópico(s): Concrete Corrosion and Durability
2022 - Elsevier BV | Journal of environmental chemical engineering
Hala J. El‐Khozondar, Fady El-batta, Rifa J. El‐Khozondar, Yasser F. Nassar, Mansour Alramlawi, Samer Alsadi,
This work is motivated by the need in overcoming the electricity crisis in Gaza, which is initiated due to political reasons and the spread of COVID-19. Building quarantine centers is one of the most important means used in combating the COVID-19, but connecting these centers to the electricity distribution network at the appropriate time is not always possible and increases the burden on the local utility company. This article proposed a hybrid off-grid energy system (HES) to effectively energize ...
Tópico(s): Advanced Battery Technologies Research
2022 - Wiley | Environmental Progress & Sustainable Energy
Mingtan Wang, Guoqing Xiao, Fei Wang, Chunlin Chen, Junjie Cao, Jing Gou, Xiyi Ma, Hongxin Yan,
... and anticorrosion properties of the BN@Zn-Hdtmp hybrid materials were predicted by molecular dynamics and density functional theory. Furthermore, after immersion in a 3.5 % NaCl solution for 45 days, the BN@Zn-Hdtmp/EP composite coating exhibited a significant decrease in resistance, ...
Tópico(s): Conducting polymers and applications
2024 - Elsevier BV | Chemical Engineering Journal
Sara Tortorella, Emanuele Carosati, Giulia Sorbi, Giovanni Bocci, Simon Cross, Gabriele Cruciani, Loriano Storchi,
... established molecular mechanics' force field and applied a hybrid quantum mechanics and machine learning approach to parametrize the hydrogen‐bonding (HB) potentials of small molecules, improving this aspect of the molecular description. Approximately 66,000 molecules were chosen from available drug databases and subjected to density functional theory calculations (DFT). For each atom, the molecular electrostatic potential (EP) was extracted and used to derive new HB ...
Tópico(s): Machine Learning in Materials Science
2021 - Wiley | Journal of Computational Chemistry
Shaoxian Li, Xueqian Zhang, Quan Xu, Meng Liu, Ming Kang, Jiaguang Han, Weili Zhang,
Observation of exceptional points (EPs) in non-Hermitian parity-time ( PT ) symmetric systems has led to various nontrivial physics and exotic phenomena. Here, a metal-graphene hybrid non-Hermitian metasurface is proposed in the terahertz regime, whose unit cell is composed of two orthogonally oriented split-ring resonators (SRRs) with identical dimensions but only one SRR containing a graphene patch at the gap. An EP in polarization space is theoretically observed at a certain Fermi level of the graphene ...
Tópico(s): Orbital Angular Momentum in Optics
2020 - Optica Publishing Group | Optics Express
Cong Gao, Yucai Shen, Tingwei Wang,
... 1 K −1 with 60 wt% content of hybrid filler, which was 91% higher than that of EP/SiO 2 samples and was around 12% higher than that of epoxy composites with unmodified BN and SiO 2 . In addition, the EP/SiO 2 @BN exhibited lower thermal interface resistance in comparison with EP/SiO 2 &BN composites according to the effective medium theory (EMT). The encapsulation of BN on the surface ...
Tópico(s): Thermal Radiation and Cooling Technologies
2020 - IOP Publishing | Materials Research Express
N. Damavandi, S. Safavi‐Naeini,
A hybrid evolutionary programming (EP) method is presented for global optimization of complex circuits. The conventional EP is integrated with a clustering algorithm to improve the robustness of the algorithm for complex multimodal circuit optimization problems. The EP generates populations around the regions of the search space which can potentially contain a minimum but may be overlooked. The clustering algorithm is used to identify these regions dynamically. In order to improve the speed of optimization, ...
Tópico(s): Metaheuristic Optimization Algorithms Research
2005 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Circuits and Systems I Fundamental Theory and Applications
Tsuneya Yoshida, Robert Peters, Norio Kawakami,
... Our analysis based on the dynamical mean-field theory elucidates that the single-particle spectral weight shows the exceptional points (EPs). Correspondingly, the spectral weight exhibits the band touching, resulting in a structure similar to the Fermi arc. Furthermore, we find an intriguing phenomenon arising from the periodicity of the lattice. The EPs generated by two distinct Dirac points merge and change into a hybrid point, which vanishes as the exchange interaction is ...
Tópico(s): Advanced Condensed Matter Physics
2018 - American Physical Society | Physical review. B./Physical review. B
Xianqu Wang, H Wang, Y. Todo, Yuhong Xu, Jialei Wang, H F Liu, J. Huang, Xiaoping Zhang, Hai Liu, Junyi Cheng, C. J. Tang,
... investigated using a three-dimensional nonlinear kinetic-magnetohydrodynamic hybrid simulation code. Both the symmetric chirping inside the Alfvén continuum gap for upward and downward directions and the asymmetric chirping affected by the Alfvén continuum are found in the simulations depending on the EP drive and the mode damping. For weak drive and damping, symmetric frequency chirping is observed with a chirping rate consistent with the Berk–Breizman theory (Berk et al 1997 Phys. Lett. A 234 ...
Tópico(s): Ionosphere and magnetosphere dynamics
2020 - IOP Publishing | Plasma Physics and Controlled Fusion
... electronic structure calculations at the MP4 level of theory with extended basis sets and experimental thermochemical data. Similar calculations on two additional potential surfaces derived from PES1 are also reported. The intramolecular energy transfer dynamics obtained on these surfaces are compared with one another and with previously reported results using an empirical hybrid-type surface (EPS) fitted to thermochemical, structural, kinetic, and spectroscopic data ...
Tópico(s): Advanced Chemical Physics Studies
2000 - American Chemical Society | The Journal of Physical Chemistry A
Ningbo An, Hanshuang Chen, Chuang Ma, Haifeng Zhang,
... of α. Using stochastic simulations and mean-field theory, we show that the type of phase transition from a disease-free phase to an endemic phase (EP) depends on the value of α. When α is small enough, the system undergoes a usual continuous phase transition as an effective spreading rate β increases, as in single-layer networks. Interestingly, when α exceeds a critical value the system shows either a hybrid two-step phase transition or a one-step ...
Tópico(s): Mathematical and Theoretical Epidemiology and Ecology Models
2018 - IOP Publishing | New Journal of Physics
LC Zeng, QH Ansari, DavidS Shyu, J-C Yao,
Abstract The purpose of this paper is to introduce and study two modified hybrid proximal-point algorithms for finding a common element of the solution set EP of a generalized equilibrium problem and the set "Equation missing" for two maximal monotone operators "Equation missing" and "Equation missing" defined on a Banach space "Equation missing". Strong and weak convergence theorems for these two modified hybrid proximal-point algorithms are established.
Tópico(s): Advanced Optimization Algorithms Research
2010 - Springer Nature | Fixed Point Theory and Applications
... possessing small size elementary unit cells at the hybrid density functional theory (DFT) (B3LYP) and general gradient approximation (GGA) Perdew-Burke-Ernzerhof (PBE) levels and then used to fit the dependences versus geometry variables for the Mulliken charges and versus special coordinate for the AMMs. Fitted and exact charges and AMMs are used to compute electrostatic potential (EP) and electric field (EF) for all-siliceous zeolites ...
Tópico(s): Spectroscopy and Quantum Chemical Studies
2011 - Wiley | Journal of Computational Chemistry
... PGTM) is developed as an extension of game theory (GT) to explicitly account for uncertainties and remove the limitations of traditional decision-making based solely on EPs. The problem of selecting robust optimal CTSSs under uncertainty is modeled as a Bayesian sequential defender–attacker game pictured in the form a hybrid decision-game tree. The analysis uses Monte Carlo ...
Tópico(s): Terrorism, Counterterrorism, and Political Violence
2016 - Wiley | Systems Engineering
Tosihide H. YOSIDA, Surender Reddy Salkuti,
This paper proposes a dynamic dual active bridge (DAB) converter and a hybrid phase shift control (HPSC) scheme for a (0.5-1) variation in the voltage conversion ratio. The proposed HPSC scheme is a combination of extended phase shift (EPS) and triple phase shift (TPS) modulations. It also provides a simple closed-form implementation for the primary and secondary-side phase-shift angles. During the light load operation of dynamic DAB converter, the TPS modulation is employed such that the practical zero ...
Tópico(s): Advanced DC-DC Converters
2019 - | International Journal of Engineering & Technology
Mingfang Lu, Wan Azlan Wan Zainal Abidin, T. Masri,
... these methods in the area of load shedding. EP, GA within Evolutionary Algorithm (EA) and PSO stand out among the methods due to their simplicity of theory and application. Hybrid methods consisting of a combination of evolutionary and ...
Tópico(s): Scheduling and Optimization Algorithms
2018 - RELX Group (Netherlands) | SSRN Electronic Journal
... drift motions of both thermal and energetic particles (EPs), can play a crucial role in stabilizing/destabilizing the RWM. The mode physics in such cases are well described by the MHD-kinetic hybrid approach. This contribution reports the recent new developments in the RWM theory, based on a non-perturbative, or self-consistent, approach for numerical modelling of the RWM stability in the presence of energetic particles. Two important aspects of the EPs effects are examined: (i) the anisotropy of the ...
Tópico(s): Ionosphere and magnetosphere dynamics
2013 - Cambridge University Press | Bulletin of the American Physical Society
Tarun Kumar Joshi, Giriraj Sharma, Yogita R. Sharma, Ajay Singh Verma,
... thereby increasing its stability. This paper will examine EP + based hybrid perovskite (CH3CH2PH3PbI3 or EPPbI3) as an alternative absorber material for photovoltaic cells of high efficiency and that too at affordable processing costs. By using FP-LAPW + lo methodology as used in density functional theory (DFT), we have examined physical features such as ...
Tópico(s): Solid-state spectroscopy and crystallography
2024 - Elsevier BV | Physica B Condensed Matter
Mohamed Kamal Cherier, Maamar Hamdani, Mawloud Guermoui, Kada Bouchouicha, Sidi Mohammed El Amine Bekkouche,
Abstract The increase in electricity demand requires improved energy planning programs, which involve better energy distribution. Therefore, precise energy demand forecasting is of great importance for optimizing energy distribution. In this respect, a new hybrid forecasting model was proposed in this study for multi‐hour forecasting of total energy requirement (cooling and heating load of buildings) in three different regions in Algeria with different climate conditions. The proposed models are ...
Tópico(s): Grey System
2022 - Wiley | Environmental Progress & Sustainable Energy
Mohamed Nasri, Dounia Saifia, Mohammed Chadli, Salim Labiod,
This paper presents a design of H∞ fuzzy controller for electric power steering (EPS) with actuator saturation. By considering the friction nonlinearity in the steering column, motor column and in the rack, as internal disturbances and using the sector nonlinearity method, a new T-S model is proposed to represent exactly the nonlinear dynamics of an EPS system. To provide a stable driving, an H∞ nonlinear state feedback is designed to control an EPS system in the presence of actuator saturation and ...
Tópico(s): Electric and
2018 - Springer Science+Business Media | Lecture notes in electrical engineering
Jian Tang, Hao Jiang, Guo Qing Geng, Nian Wen Xue,
... modeling the system of multiple energy, bond-graph theory is applied to the modeling for electric power steering system which is electromechanical hybrid. Bond graph models for C type, P type and R type of EPS dynamic system are built respectively. The CH7140 type ...
Tópico(s): Advanced Computational Techniques and Applications
2011 - Trans Tech Publications | Key engineering materials