The influence of alloying on elastic, thermal and ultrasonic properties has been investigated for wurtzite (wz) structured ScxAl1-xN alloy at room temperature along the unique axis. Firstly, the higher order elastic constants have been computed by means of Lennard-Jones potential model. The mechanical constants are estimated to determine mechanical properties like stability, stiffness, compressibility, hardness and ductility etc. The ultrasonic wave velocities have been appraised using the second order elastic constants (SOECs) at different angle of propagation, which have been further used to calculate thermal properties like Debye temperatures, thermal conductivities and thermal relaxation time of ScxAl1-xN at room temperature (300 K). Finally, the coefficient of ultrasonic attenuation due to the thermoelastic relaxation process and due to the phonon-viscosity interaction process has been analyzed for wz- ScxAl1-xN at 300K. The achieved results have been interpreted with existing results on wz- ScxAl1-xN as well as with other wz materials.
{"title":"Impact of alloying on elastic, thermal and ultrasonic properties of wurtzite ScxAl1-xN","authors":"Anurag Singh , Devraj Singh , Sudhanshu Tripathi , Rabah Khenata","doi":"10.1016/j.physleta.2024.130010","DOIUrl":"10.1016/j.physleta.2024.130010","url":null,"abstract":"<div><div>The influence of alloying on elastic, thermal and ultrasonic properties has been investigated for wurtzite (wz) structured Sc<sub>x</sub>Al<sub>1-x</sub>N alloy at room temperature along the unique axis. Firstly, the higher order elastic constants have been computed by means of Lennard-Jones potential model. The mechanical constants are estimated to determine mechanical properties like stability, stiffness, compressibility, hardness and ductility etc. The ultrasonic wave velocities have been appraised using the second order elastic constants (SOECs) at different angle of propagation, which have been further used to calculate thermal properties like Debye temperatures, thermal conductivities and thermal relaxation time of Sc<sub>x</sub>Al<sub>1-x</sub>N at room temperature (300 K). Finally, the coefficient of ultrasonic attenuation due to the thermoelastic relaxation process and due to the phonon-viscosity interaction process has been analyzed for wz- Sc<sub>x</sub>Al<sub>1-x</sub>N at 300K. The achieved results have been interpreted with existing results on wz- Sc<sub>x</sub>Al<sub>1-x</sub>N as well as with other wz materials.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"527 ","pages":"Article 130010"},"PeriodicalIF":2.3,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In order to enhance the emission performance of transmission-mode GaAs photocathodes used in optoelectronic field, different exponential doping structures are designed for the GaAs emission layer to generate different types of built-in electric fields. These built-in electric fields include the constant, increasing and decreasing types, which can help photoelectron transport toward the emission surface. By solving the one-dimensional continuity equation using the finite difference method, the electron concentration distribution and quantum efficiency of the three types of exponential doping GaAs photocathodes are derived. Meanwhile, the light absorption distributions in the emission layer are simulated by the finite difference time domain method. By comparing the optical absorption distribution and the electron concentration distribution, it is concluded that, among the three types of exponential doping structures, the exponential doping structure generating the increasing built-in electric field has the most sufficient long-wave light absorption capacity and the strongest photoelectron transport ability, thereby achieving the highest quantum efficiency. This theoretical work can help understand the mechanism of improving the photoemission performance of GaAs photocathodes through doping engineering.
{"title":"Different built-in electric fields for transmission-mode GaAs photocathodes through doping engineering: Design and modeling","authors":"Zehao Tong , Yijun Zhang , Yu Jiang , Shiman Li , Jianpo Gao , Feng Shi , Hongchang Cheng , Xin Guo , Yunsheng Qian , Yugang Zeng","doi":"10.1016/j.physleta.2024.130009","DOIUrl":"10.1016/j.physleta.2024.130009","url":null,"abstract":"<div><div>In order to enhance the emission performance of transmission-mode GaAs photocathodes used in optoelectronic field, different exponential doping structures are designed for the GaAs emission layer to generate different types of built-in electric fields. These built-in electric fields include the constant, increasing and decreasing types, which can help photoelectron transport toward the emission surface. By solving the one-dimensional continuity equation using the finite difference method, the electron concentration distribution and quantum efficiency of the three types of exponential doping GaAs photocathodes are derived. Meanwhile, the light absorption distributions in the emission layer are simulated by the finite difference time domain method. By comparing the optical absorption distribution and the electron concentration distribution, it is concluded that, among the three types of exponential doping structures, the exponential doping structure generating the increasing built-in electric field has the most sufficient long-wave light absorption capacity and the strongest photoelectron transport ability, thereby achieving the highest quantum efficiency. This theoretical work can help understand the mechanism of improving the photoemission performance of GaAs photocathodes through doping engineering.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"527 ","pages":"Article 130009"},"PeriodicalIF":2.3,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-24DOI: 10.1016/j.physleta.2024.130004
Tapan K. Sengupta , Bhavna Joshi , Prasannabalaji Sundaram
Direct numerical simulation (DNS) of Rayleigh-Taylor instability (RTI) has been reported in Sengupta, et al. (2022) [35] using more than 4 billion points with initial time steps of 7.69 . The set-up consists of quiescent heavy (cold) fluid atop lighter (hot) fluid initially separated by an insulated partition. Removal of this partition creates acoustic pulses in the directions normal to the interface, which provides the receptivity route of RTI to transient acoustic pulses spread over several mega-Hz frequencies, far in excess of ultrasonic frequencies. The DNS and its analysis reveal the pulses to be severely attenuated, which cannot be explained by the classical wave equation. In the present research, after demonstrating the features of the DNS results, we report in detail, the theoretical development of a wave equation incorporating losses based on the Navier-Stokes equation without Stokes' hypothesis for a quiescent ambience. Apart from the physical properties of this altered wave equation, the numerical solution of the same is obtained. The governing partial differential equation (PDE) for the propagation of disturbances in the spectral plane, provides the dispersion relation between wavenumber and circular frequency in the dissipative medium accounting for viscous losses. The presented analysis provides physical properties using the global spectral analysis (GSA). This shows the far-field perturbation to propagate either as attenuated waves or strictly in a diffusive manner depending upon the wavenumber. The PDE is solved numerically by a high-accuracy compact scheme and the four-stage, Runge-Kutta scheme for time advancement. The computed solution is shown to match not only with the developed theoretical analysis but also explains the DNS results for RTI at early times when the computed flow field truly represents the quiescent ambience.
{"title":"Receptivity of Rayleigh-Taylor instability to acoustic pulses: Theoretical explanation of pulse propagation","authors":"Tapan K. Sengupta , Bhavna Joshi , Prasannabalaji Sundaram","doi":"10.1016/j.physleta.2024.130004","DOIUrl":"10.1016/j.physleta.2024.130004","url":null,"abstract":"<div><div>Direct numerical simulation (DNS) of Rayleigh-Taylor instability (RTI) has been reported in Sengupta, et al. (2022) <span><span>[35]</span></span> using more than 4 billion points with initial time steps of 7.69 <span><math><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>8</mn></mrow></msup><mi>s</mi></math></span>. The set-up consists of quiescent heavy (cold) fluid atop lighter (hot) fluid initially separated by an insulated partition. Removal of this partition creates acoustic pulses in the directions normal to the interface, which provides the receptivity route of RTI to transient acoustic pulses spread over several mega-Hz frequencies, far in excess of ultrasonic frequencies. The DNS and its analysis reveal the pulses to be severely attenuated, which cannot be explained by the classical wave equation. In the present research, after demonstrating the features of the DNS results, we report in detail, the theoretical development of a wave equation incorporating losses based on the Navier-Stokes equation without Stokes' hypothesis for a quiescent ambience. Apart from the physical properties of this altered wave equation, the numerical solution of the same is obtained. The governing partial differential equation (PDE) for the propagation of disturbances in the spectral plane, provides the dispersion relation between wavenumber and circular frequency in the dissipative medium accounting for viscous losses. The presented analysis provides physical properties using the global spectral analysis (GSA). This shows the far-field perturbation to propagate either as attenuated waves or strictly in a diffusive manner depending upon the wavenumber. The PDE is solved numerically by a high-accuracy compact scheme and the four-stage, Runge-Kutta scheme for time advancement. The computed solution is shown to match not only with the developed theoretical analysis but also explains the DNS results for RTI at early times when the computed flow field truly represents the quiescent ambience.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"527 ","pages":"Article 130004"},"PeriodicalIF":2.3,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-24DOI: 10.1016/j.physleta.2024.130002
Jingyun Ouyang , Gaofei Xu , Yufen Liu , Shangling He , Yingji He , Dongmei Deng , Xi Peng
We analyze the propagation of spatiotemporal Airy-Laguerre complex-variable-function Gaussian (ALCG) wave packets using phase modulation. These wave packets can split into left circularly polarized ALCG (LCP-ALCG) and right circularly polarized ALCG (RCP-ALCG) components due to circular birefringence in a chiral medium. Our discussion primarily focuses on the effects of polynomial order, angle parameters, distribution factor, cross-phase factor, first-order chirp factor, and chiral parameter on the ALCG wave packets. The distinct LCP-ALCG and RCP-ALCG wave packet characteristics are obtained, and the radiation forces on Rayleigh dielectric particles are investigated. Our results emphasize the influence of various parameters in the propagation properties of ALCG wave packets, unveiling their potential for advancements in optical communication and optical trapping domains.
{"title":"Propagation of spatiotemporal Airy-Laguerre complex-variable-function Gaussian wave packets in a chiral medium","authors":"Jingyun Ouyang , Gaofei Xu , Yufen Liu , Shangling He , Yingji He , Dongmei Deng , Xi Peng","doi":"10.1016/j.physleta.2024.130002","DOIUrl":"10.1016/j.physleta.2024.130002","url":null,"abstract":"<div><div>We analyze the propagation of spatiotemporal Airy-Laguerre complex-variable-function Gaussian (ALCG) wave packets using phase modulation. These wave packets can split into left circularly polarized ALCG (LCP-ALCG) and right circularly polarized ALCG (RCP-ALCG) components due to circular birefringence in a chiral medium. Our discussion primarily focuses on the effects of polynomial order, angle parameters, distribution factor, cross-phase factor, first-order chirp factor, and chiral parameter on the ALCG wave packets. The distinct LCP-ALCG and RCP-ALCG wave packet characteristics are obtained, and the radiation forces on Rayleigh dielectric particles are investigated. Our results emphasize the influence of various parameters in the propagation properties of ALCG wave packets, unveiling their potential for advancements in optical communication and optical trapping domains.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"527 ","pages":"Article 130002"},"PeriodicalIF":2.3,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-24DOI: 10.1016/j.physleta.2024.130003
Ao-Xiang Liu , Ma-Cheng Yang , Cong-Feng Qiao
To optimize the entanglement detection, we formulate the metrologically operational entanglement condition in quantum Fisher information by maximizing the QFI on the measurement orbit. Specifically, we consider two classes of typical local observables, i.e. the local orthonormal observables and symmetric informationally complete positive operator-valued measures. Result shows that the symmetric informationally complete positive operator-valued measures are superior to local orthonormal observables in entanglement detection, which in some sense hints the yet unconfirmed generally superiority of symmetric informationally complete positive operator-valued measures in quantum information processing.
{"title":"Entanglement criteria based on quantum Fisher information","authors":"Ao-Xiang Liu , Ma-Cheng Yang , Cong-Feng Qiao","doi":"10.1016/j.physleta.2024.130003","DOIUrl":"10.1016/j.physleta.2024.130003","url":null,"abstract":"<div><div>To optimize the entanglement detection, we formulate the metrologically operational entanglement condition in quantum Fisher information by maximizing the QFI on the measurement orbit. Specifically, we consider two classes of typical local observables, i.e. the local orthonormal observables and symmetric informationally complete positive operator-valued measures. Result shows that the symmetric informationally complete positive operator-valued measures are superior to local orthonormal observables in entanglement detection, which in some sense hints the yet unconfirmed generally superiority of symmetric informationally complete positive operator-valued measures in quantum information processing.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"527 ","pages":"Article 130003"},"PeriodicalIF":2.3,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-23DOI: 10.1016/j.physleta.2024.130006
D.V. Khveshchenko
This latter addresses the effects of long-ranged and/or retarded interactions on the bosonic collective modes in the so-called ‘strange metals’. Recently, there have been conflicting reports on the very existence of such stable collective excitations and their properties. Extending a number of approaches that have been previously used in the analyses of the standard Fermi liquid one finds evidence for, both, conventional and novel behaviors of the non-Fermi-liquid counterparts of the zero-, shear-, and other ‘sounds’.
{"title":"Strange sounds","authors":"D.V. Khveshchenko","doi":"10.1016/j.physleta.2024.130006","DOIUrl":"10.1016/j.physleta.2024.130006","url":null,"abstract":"<div><div>This latter addresses the effects of long-ranged and/or retarded interactions on the bosonic collective modes in the so-called ‘strange metals’. Recently, there have been conflicting reports on the very existence of such stable collective excitations and their properties. Extending a number of approaches that have been previously used in the analyses of the standard Fermi liquid one finds evidence for, both, conventional and novel behaviors of the non-Fermi-liquid counterparts of the zero-, shear-, and other ‘sounds’.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"527 ","pages":"Article 130006"},"PeriodicalIF":2.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-22DOI: 10.1016/j.physleta.2024.130000
Marcelo V. Flamarion , Efim Pelinovsky , Denis V. Makarov
In this work, we examine the classical Burgers equation and investigate the effects of a random force on the wave field. Two scenarios are considered: the impact of a random force on different wave fields within the viscous Burgers equation and the effect of a periodic random force in the inviscid Burgers equation. For the first case, we demonstrate that the random force primarily causes wave fronts to increase or decrease depending on the dispersion parameter. For an initially deformed sinusoidal wave, the external force causes the mean wave field to spread out and dampen over time. The Cole-Hopf transformation is also used to obtain asymptotically the averaged wave field in certain regimes. For the inviscid problem, we assume the random force to be periodic with random phase to show that the mean wave field corresponds to the solution of the classical inviscid Burgers equation without external forces.
{"title":"Wave fields under the influence of a random-driven force: The Burgers equation","authors":"Marcelo V. Flamarion , Efim Pelinovsky , Denis V. Makarov","doi":"10.1016/j.physleta.2024.130000","DOIUrl":"10.1016/j.physleta.2024.130000","url":null,"abstract":"<div><div>In this work, we examine the classical Burgers equation and investigate the effects of a random force on the wave field. Two scenarios are considered: the impact of a random force on different wave fields within the viscous Burgers equation and the effect of a periodic random force in the inviscid Burgers equation. For the first case, we demonstrate that the random force primarily causes wave fronts to increase or decrease depending on the dispersion parameter. For an initially deformed sinusoidal wave, the external force causes the mean wave field to spread out and dampen over time. The Cole-Hopf transformation is also used to obtain asymptotically the averaged wave field in certain regimes. For the inviscid problem, we assume the random force to be periodic with random phase to show that the mean wave field corresponds to the solution of the classical inviscid Burgers equation without external forces.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"527 ","pages":"Article 130000"},"PeriodicalIF":2.3,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-22DOI: 10.1016/j.physleta.2024.130005
X.Y. Yang , H.Y. Song
The effect of the distribution and concentration of rare earth (RE) element Y, crack orientation, temperature, and strain rate on the crack propagation behavior of the Mg alloys is investigated by molecular dynamics/Monte Carlo simulations. The results show that the RE element Y tends to form locally short-range order structures in the Mg alloys, and the introduction of the RE element Y can enhance the fracture toughness of the Mg alloys. The results indicate that with the increase of Y concentration, the crack propagation mode of the Mg alloys shifts from a mode, dominated by the dislocation emissions at the crack tip and the crack cleavage propagation to a mode dominated by the solid-state amorphization and the slip of amorphous bands. In addition, the results show that the faster the strain rate, the slower the crack propagation speed, and the crack propagation resistance increases with increasing temperature.
通过分子动力学/蒙特卡洛模拟研究了稀土元素 Y 的分布和浓度、裂纹取向、温度和应变速率对镁合金裂纹扩展行为的影响。结果表明，RE 元素 Y 有在镁合金中形成局部短程有序结构的趋势，引入 RE 元素 Y 可以提高镁合金的断裂韧性。结果表明，随着 Y 浓度的增加，镁合金的裂纹扩展模式从以裂纹尖端位错发射和裂纹劈裂扩展为主的模式转变为以固态非晶化和非晶带滑移为主的模式。此外，研究结果表明，应变速率越快，裂纹扩展速度越慢，裂纹扩展阻力随温度升高而增大。
{"title":"Effect of rare earth element Y on the crack propagation behavior of Mg alloys: A molecular dynamics simulation","authors":"X.Y. Yang , H.Y. Song","doi":"10.1016/j.physleta.2024.130005","DOIUrl":"10.1016/j.physleta.2024.130005","url":null,"abstract":"<div><div>The effect of the distribution and concentration of rare earth (RE) element Y, crack orientation, temperature, and strain rate on the crack propagation behavior of the Mg alloys is investigated by molecular dynamics/Monte Carlo simulations. The results show that the RE element Y tends to form locally short-range order structures in the Mg alloys, and the introduction of the RE element Y can enhance the fracture toughness of the Mg alloys. The results indicate that with the increase of Y concentration, the crack propagation mode of the Mg alloys shifts from a mode, dominated by the dislocation emissions at the crack tip and the crack cleavage propagation to a mode dominated by the solid-state amorphization and the slip of amorphous bands. In addition, the results show that the faster the strain rate, the slower the crack propagation speed, and the crack propagation resistance increases with increasing temperature.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"527 ","pages":"Article 130005"},"PeriodicalIF":2.3,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-22DOI: 10.1016/j.physleta.2024.129995
Chun Wang , Wei Tang , Jinxiu Pi
It is not uncommon for firms to gain access to the information concerning not only the previous decisions of others but also their decision-making methodologies. However, few literatures study the information concerning decision-making methodologies in dynamic Cournot games. This paper considers a dynamic Cournot game with adaptive expectation. It is assumed that each firm extra acquires the information regarding the other competitors' decision-making methodologies, and the information will be employed to estimate the outputs of other firms in the next period. The information leads to a decline in the stability of the original Cournot-Nash equilibrium, as demonstrated by both theoretical analysis and numerical simulation. It implies that boundedly rational firms need be vigilant for the information concerning decision-making methodologies in certain cases.
{"title":"Demerit of the information concerning decision-making methodology: A dynamic Cournot game with adaptive expectation","authors":"Chun Wang , Wei Tang , Jinxiu Pi","doi":"10.1016/j.physleta.2024.129995","DOIUrl":"10.1016/j.physleta.2024.129995","url":null,"abstract":"<div><div>It is not uncommon for firms to gain access to the information concerning not only the previous decisions of others but also their decision-making methodologies. However, few literatures study the information concerning decision-making methodologies in dynamic Cournot games. This paper considers a dynamic Cournot game with adaptive expectation. It is assumed that each firm extra acquires the information regarding the other competitors' decision-making methodologies, and the information will be employed to estimate the outputs of other firms in the next period. The information leads to a decline in the stability of the original Cournot-Nash equilibrium, as demonstrated by both theoretical analysis and numerical simulation. It implies that boundedly rational firms need be vigilant for the information concerning decision-making methodologies in certain cases.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"527 ","pages":"Article 129995"},"PeriodicalIF":2.3,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-22DOI: 10.1016/j.physleta.2024.129996
Qiang Guo , Min-Hui Yi , Jian-Guo Liu
The TOPSIS method identifies the spreading influences nodes by gathering different methods together with equal weights regardless the physics that different methods are effective for different scenarios. In this paper, by introducing the cascading model to measure the target node's influence, we present a weighted TOPSIS method by taking into 1% nodes cascading influence ability to calculate the weight. Experimental results for nine real-world networks show that, comparing with the traditional TOPSIS method, average speaking, accuracy of the WTOPSIS could be enhanced by 4.471%.
{"title":"Identifying node importance for networked systems in terms of the cascading model","authors":"Qiang Guo , Min-Hui Yi , Jian-Guo Liu","doi":"10.1016/j.physleta.2024.129996","DOIUrl":"10.1016/j.physleta.2024.129996","url":null,"abstract":"<div><div>The TOPSIS method identifies the spreading influences nodes by gathering different methods together with equal weights regardless the physics that different methods are effective for different scenarios. In this paper, by introducing the cascading model to measure the target node's influence, we present a weighted TOPSIS method by taking into 1% nodes cascading influence ability to calculate the weight. Experimental results for nine real-world networks show that, comparing with the traditional TOPSIS method, average speaking, accuracy of the WTOPSIS could be enhanced by 4.471%.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"527 ","pages":"Article 129996"},"PeriodicalIF":2.3,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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