PhysicsRN EM Feeds最新文献

Efficient Hybrid Symbolic-Numeric Computational Method for Piecewise Linear Systems with Coulomb Friction 具有库仑摩擦的分段线性系统的高效符号-数值混合计算方法

PhysicsRN EM Feeds Pub Date : 2023-03-27 DOI: 10.2139/ssrn.3940122

Amirhosein Shahhosseini, Meng-Hsuan Tien, Kiran D’Souza

{"title":"Efficient Hybrid Symbolic-Numeric Computational Method for Piecewise Linear Systems with Coulomb Friction","authors":"Amirhosein Shahhosseini, Meng-Hsuan Tien, Kiran D’Souza","doi":"10.2139/ssrn.3940122","DOIUrl":"https://doi.org/10.2139/ssrn.3940122","url":null,"abstract":"\u0000 A wide range of mechanical systems have gaps, cracks, intermittent contact or other geometrical discontinuities while simultaneously experiencing Coulomb friction. A piecewise linear model with discontinuous force elements is discussed in this paper that has the capability to accurately emulate the behavior of such mechanical assemblies. The mathematical formulation of the model is standardized via a universal differential inclusion and its behavior, in different scenarios, is studied. In addition to the compatibility of the proposed model with numerous industrial systems, the model also bears significant scientific value since it can demonstrate a wide spectrum of motions, ranging from periodic to chaotic. Furthermore, it is demonstrated that this class of models can generate a rare type of motion, called weakly chaotic motion.\u0000 After their detailed introduction and analysis, an efficient hybrid symbolic-numeric computational method is introduced that can accurately obtain the arbitrary response of this class of nonlinear models. The proposed method is capable of treating high dimensional systems and its proposition omits the need for utilizing model reduction techniques for a wide range of problems. In contrast to the existing literature focused on improving the computational performance when analyzing these systems when there is a periodic response, this method is able to capture transient and non-stationary dynamics and is not restricted to only steady state periodic responses.","PeriodicalId":375434,"journal":{"name":"PhysicsRN EM Feeds","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130627672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Improved Variable Scale-Convex-Peak Method for Weak Signal Detection 改进的变尺度-凸峰微弱信号检测方法

PhysicsRN EM Feeds Pub Date : 2022-03-01 DOI: 10.2139/ssrn.3946841

Haiping Li, R. Tian, Qiang Xue, Yangkun Zhang, Xiaolong Zhang

{"title":"Improved Variable Scale-Convex-Peak Method for Weak Signal Detection","authors":"Haiping Li, R. Tian, Qiang Xue, Yangkun Zhang, Xiaolong Zhang","doi":"10.2139/ssrn.3946841","DOIUrl":"https://doi.org/10.2139/ssrn.3946841","url":null,"abstract":"Based on the rectification of detectable domain method and elimination of blind domain method, the variable scale-convex-peak method for the identification frequency of weak signal is improved. For the initial phase of weak signal to be detected, the analytic expression of chaotic threshold is obtained by using stochastic Melnikov method. The influence of phase on chaotic threshold is clarified, which leads to that the frequency of weak signal can be identified. Specifically, the initial phase in a period is divided into the detectable domain and the blind domain. In the detectable domain, when the frequency identification deviates, the rectification of detectable domain method is introduced. Specifically, the Newton interpolation method is used to give the calculation formula to rectify the deviation, which improves the accuracy of frequency identification. In the blind domain, the elimination of blind domain method is given by constructing the detection equations. The feasibility of the improved variable scale-convex-peak method is verified by numerical simulation and circuit experiment. Furthermore, by comparing the identified frequency value with the theoretical fault frequency value, the fault location of the wheelset bearing of high-speed train is determined. The improved variable scale-convex-peak method is applied when the initial phase is in the frequency detectable domain or the blind domain, respectively. The accuracy of the detection effect can be 96.69%, and the minimum signal-to-noise ratio(SNR) can be - 50.8757dB.","PeriodicalId":375434,"journal":{"name":"PhysicsRN EM Feeds","volume":" March","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113946856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Vulnerable European Option Pricing in a Markov Regime-Switching Heston Model with Stochastic Interest Rate 随机利率下马尔可夫制域交换赫斯顿模型的易损欧式期权定价

PhysicsRN EM Feeds Pub Date : 2022-03-01 DOI: 10.2139/ssrn.3934307

Yurong Xie, G. Deng

{"title":"Vulnerable European Option Pricing in a Markov Regime-Switching Heston Model with Stochastic Interest Rate","authors":"Yurong Xie, G. Deng","doi":"10.2139/ssrn.3934307","DOIUrl":"https://doi.org/10.2139/ssrn.3934307","url":null,"abstract":"This paper considers pricing of European-style vulnerable options under the Heston stochastic volatility and stochastic interest rate model in which the mean-reversion levels of both variance and interest rate processes are modulated by a continuous-time Markov process with a finite state space. An analytical pricing formula is derived by using the Esscher transform, joint characteristic function and multivariate Fourier transform technique, where the closed-form solution of the characteristic function is obtained by the law of iterated expectation. Then we provide the efficient approximation to calculate the analytical pricing formula of option using the FFT approach and examine the accuracy of the approximation by Monte Carlo simulation. Finally, the sensitivity analysis of different parameters in the proposed model on the vulnerable call option price and its Delta value are provided, and the difference between the proposed model and the Heston and stochastic interest rate model with non-Markov regime-switching are presented by some numerical experiments, which shows the influence of introducing regime-switching into Heston model with stochastic interest rate.","PeriodicalId":375434,"journal":{"name":"PhysicsRN EM Feeds","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124406049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Resonantly Enhanced Absorption in Bifurcation Plasmon Nanostructures for Refractive Index Sensing 用于折射率传感的分岔等离子体纳米结构共振增强吸收

PhysicsRN EM Feeds Pub Date : 2022-02-01 DOI: 10.2139/ssrn.3947716

Ran Li, Junqiao Wang, Mengke Ren, Wenhan Zhao, Mengyue He, Shuai Sun, Yu Mao, Shuo Tian, Yan Li, P. Ding

引用次数: 4

Optical Trapping Force on Two Types of Particles with a Focused Partially Coherent Lommel-Gaussian Beam 聚焦部分相干洛梅尔-高斯光束对两类粒子的光捕获力

PhysicsRN EM Feeds Pub Date : 2021-12-01 DOI: 10.2139/ssrn.3934344

Wen Zuo, Yannan Han, Zhengxian Zhou, Hua-Feng Xu, Zhenglan Zhou, Qu Jun

{"title":"Optical Trapping Force on Two Types of Particles with a Focused Partially Coherent Lommel-Gaussian Beam","authors":"Wen Zuo, Yannan Han, Zhengxian Zhou, Hua-Feng Xu, Zhenglan Zhou, Qu Jun","doi":"10.2139/ssrn.3934344","DOIUrl":"https://doi.org/10.2139/ssrn.3934344","url":null,"abstract":"In order to explore the capture of two types of particles with different refractive-indexes with focused partially coherent Lommel-Gaussian beam (PCLGB), we numerically derived the expressions of the intensity, and its distribution is also simulated. We found that the focused PCLGB is able to capture two high refractive-index particles at different positions on the focal plane and a low refractive-index particle at the focus, respectively. when the orbital angular momentum（OAM）quantum number, lens focal length, asymmetry parameter decreased, and the spatial correlation length and beam waist increased, the transverse gradient force of the focused PCLGB increased; when the OAM quantum number, lens focal length, asymmetry parameter, spatial correlation length decreased and the beam waist increased, the axial gradient force and scattering force of the focused PCLGB increased. We can choose the optimum optical and lens parameters, a large range and stable trapping can be achieved. The obtained results have certain reference value for the focused PCLGB applied in micromanipulation technology and biotechnology.","PeriodicalId":375434,"journal":{"name":"PhysicsRN EM Feeds","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129483170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Effects of the Vibrating Graphene Membrane and the Driven Classical Field on an Atomic System Coupled to a Cavity Field 振动石墨烯膜和驱动经典场对耦合空腔场的原子系统的影响

PhysicsRN EM Feeds Pub Date : 2021-11-01 DOI: 10.2139/ssrn.3944524

Maged Faihan Alotibi, E. Khalil, S. Abdel-Khalek, M. Y. Abd-Rabbou, M. Omri

引用次数: 12

Tunable Multiwavelength Thulium-Doped Fiber Laser Based on Parallel Lyot Filter 基于平行Lyot滤波器的可调谐多波长掺铥光纤激光器

PhysicsRN EM Feeds Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3931776

Muhammad Syauqi Kusyairi Jamalus, A. Sulaiman, F. Abdullah, N. Zulkifli, M. Alresheedi, M. Mahdi, Nelidya Md Yusoff

引用次数: 0

Nonlinear Dynamics of Dust-Ion-Acoustic Waves in Magnetized Collisional Opposite Polarity Dusty Plasmas 磁化反极性尘埃等离子体中尘埃-离子-声波的非线性动力学

PhysicsRN EM Feeds Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3931775

Md. Rakib Hassan, S. Biswas, K. Habib, S. Sultana

{"title":"Nonlinear Dynamics of Dust-Ion-Acoustic Waves in Magnetized Collisional Opposite Polarity Dusty Plasmas","authors":"Md. Rakib Hassan, S. Biswas, K. Habib, S. Sultana","doi":"10.2139/ssrn.3931775","DOIUrl":"https://doi.org/10.2139/ssrn.3931775","url":null,"abstract":"A four-component magnetized collisional superthermal opposite polarity dusty plasma (OPDP), containing stationary dust grains of opposite charges, inertial ion fluid, and non-inertial superthermal electrons, has been considered to study different modes of dust-ion-acoustic waves (DIAWs) theoretically and numerically. In addition, the collisional effect between ion and neutral particles and the temperature effect of adiabatic warm ions have been taken into account to draw a more generalized picture of DIAWs. To investigate the growth, evaluation, propagation, and fundamental features (e.g., speed, amplitude, energy, width, etc.) of DIAWs, the reductive perturbation theory has been employed to derive the damped Zakharov-Kuznetsov-Burgers (dZKB) equation, and the hyperbolic tangent method is adopted to find the solution of dZKB equation. The fundamental attributes of DIAWs are seen to be affected significantly due to the variation of basic plasma parameters (e.g., adiabaticity, superthermality, viscosity, ion temperature, obliquity angle, magnetic field intensity, the amount of charge residing onto the dust grains, ion-neutral collision frequency, etc.). In addition, the coexistence of oppositely charged dust grains has a notable effect on the dynamics of linear and nonlinear DIAWs, which has been established in the bifurcation analysis. The polarity of the DIAWs changes if the amount of positive charge on dust is excessively greater than that of negative charge and vice versa. The findings of this research work may be apply to examine the properties of DIAWs in experimental and space dusty plasmas, where the opposite polarity dust grains are present, adiabatic thermal pressure of warm ion and damping due to ion-neutral collision are accountable.","PeriodicalId":375434,"journal":{"name":"PhysicsRN EM Feeds","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114935030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Singular Optical Characteristics Generated by Fibonacci Multilayers Composed of PT-Symmetric Elements 由pt对称元组成的斐波那契多层膜产生的奇异光学特性

PhysicsRN EM Feeds Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3931773

Fen Tang, Xiangbo Yang, Xiaomin Wang, Yao Zhang, D. Deng, Hongzhan Liu, Zhongchao Wei

{"title":"Singular Optical Characteristics Generated by Fibonacci Multilayers Composed of PT-Symmetric Elements","authors":"Fen Tang, Xiangbo Yang, Xiaomin Wang, Yao Zhang, D. Deng, Hongzhan Liu, Zhongchao Wei","doi":"10.2139/ssrn.3931773","DOIUrl":"https://doi.org/10.2139/ssrn.3931773","url":null,"abstract":"In this paper, a class of one-dimensional (1D) Fibonacci quasi-periodic multilayers composed of two parity-time-symmetric (PT -symmetric) elements are designed. Their scattering spectra, transparencies, invisibilities, and other singular optical properties are investigated in detail. It is found that three types of new systematic phases, ten types of new unidirectional transparencies, two types of new bidirectional transparencies and one type of new bidirectional invisibility are created by this class of interesting systems, which possess more types compared with the PT -symmetric periodic multilayers and the Thue-Morse multilayers composed of PT -symmetric elements. It can be seen that although the order degree of the Fibonacci multilayers is lower than that of the other two systems, their types of systematic phases, transparencies, and invisibilities are obtained, their types of systematic phases, transparencies, and invisibilities are more abundant. This proves that, as the order degree of the PT -symmetric system decreases, its types of singular optical properties become more abundant. This work sheds some light on the PT -symmetric optical structures and Fibonacci sequence, offering the possibility to widen their application field. Moreover, it provides a\u2028theoretical basis to design new optical devices.","PeriodicalId":375434,"journal":{"name":"PhysicsRN EM Feeds","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134021460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

HM-3DCE-Net for Superior 3D Photoacoustic Imaging Enhancement and Segmentation HM-3DCE-Net用于优越的三维光声成像增强和分割

PhysicsRN EM Feeds Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3948474

Huangxuan Zhao, Jia Huang, Ningbo Chen, Leqing Chen, Chengbo Liu, Chuansheng Zheng, Fan Yang

引用次数: 1