Physica Scripta最新文献_第4页

A novel asymmetric extension of power XLindley distribution: properties, inference and applications to engineering data 幂 XLindley 分布的新型非对称扩展：特性、推理及工程数据应用

IF 2.9 3区物理与天体物理

Physica Scripta Pub Date : 2024-09-17 DOI: 10.1088/1402-4896/ad77fa

Najwan Alsadat, Amal S Hassan, Mohammed Elgarhy, Vasili B V Nagarjuna, Sid Ahmed Benchiha and Ahmed M Gemeay

{"title":"A novel asymmetric extension of power XLindley distribution: properties, inference and applications to engineering data","authors":"Najwan Alsadat, Amal S Hassan, Mohammed Elgarhy, Vasili B V Nagarjuna, Sid Ahmed Benchiha and Ahmed M Gemeay","doi":"10.1088/1402-4896/ad77fa","DOIUrl":"https://doi.org/10.1088/1402-4896/ad77fa","url":null,"abstract":"It is impossible to overstate the importance of using trigonometric functions appropriately in distribution theory. The main contribution of the research is to construct a flexible trigonometric extension of the power XLindley distribution. More specifically, we build an innovative two-parameter lifetime distribution known as the sine power XLindley distribution (SPXLD) using characteristics from the sine-generated family of distributions. As the main motivational fact, it provides an attractive alternative to the power Lindley, power XLindley, weighted Lindley, and extended power Lindley distributions; it may be better able to model lifetime phenomena presenting data of leptokurtic and platkurtic nature. In contrast to the increasing, decreasing, and reversed-j-shaped hazard rate function, the density exhibits asymmetric shapes with varying peakedness levels. Several significant characteristics are illustrated, including moments, the quantile function, the probability density function in series representation, the stress-strength reliability, and incomplete moments. To analyze the behavior of the suggested distribution, sixteen estimation techniques are applied, such as the maximum likelihood, percentiles, some methods of minimum distances, some methods based on minimum and maximum spacing distances, and the Kolmogorov method. After that, an extensive simulation study and the examination of two survival real datasets are used to show the viability, usefulness, and adaptability of the SPXLD. Relevant goodness of fit criteria demonstrates that the SPXLD fits several current distributions.","PeriodicalId":20067,"journal":{"name":"Physica Scripta","volume":"4 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257487","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}

引用次数: 0

Quantum transport of topological surface states in presence of circular n-p junctions 存在圆形 n-p 结时拓扑表面态的量子输运

IF 2.9 3区物理与天体物理

Physica Scripta Pub Date : 2024-09-17 DOI: 10.1088/1402-4896/ad78c7

Neetu Agrawal

引用次数: 0

Coupled awareness-epidemic spreading with the consideration of self-isolation behavior 认识--流行病传播耦合，考虑自我隔离行为

IF 2.9 3区物理与天体物理

Physica Scripta Pub Date : 2024-09-15 DOI: 10.1088/1402-4896/ad7409

Jiajun Xian, Teng Wang, Wei Zhang, Kunwei Chen, Nan Meng, Jiawen Sun, Dan Yang, Ming Liu, Jinlin Ye and Wei Wang

{"title":"Coupled awareness-epidemic spreading with the consideration of self-isolation behavior","authors":"Jiajun Xian, Teng Wang, Wei Zhang, Kunwei Chen, Nan Meng, Jiawen Sun, Dan Yang, Ming Liu, Jinlin Ye and Wei Wang","doi":"10.1088/1402-4896/ad7409","DOIUrl":"https://doi.org/10.1088/1402-4896/ad7409","url":null,"abstract":"Epidemic transmission and the associated awareness diffusion are fundamentally interactive. There has been a burgeoning interest in exploring the coupled epidemic-awareness dynamic. However, current research predominantly focuses on self-protection behavior stimulated by awareness, paying less attention to self-isolation behavior. Given the constraints of government-mandated quarantine measures, spontaneous self-isolation actions assume greater significance in the long-term response to epidemics. In response, we propose a coupled awareness-epidemic spreading model with the consideration of self-isolation behavior and subsequently employ a Micro Markov Chain Approach to analyze the model. Extensive experiments show that self-isolation behavior can effectively raise the epidemic threshold and reduce the final outbreak scale. Notably, in multiplex networks with positive inter-layer correlation, the inhibitory effect is the greatest. Moreover, there exists a metacritical point, only when the awareness diffusion probability exceeds the critical value of this point, the epidemic threshold will increase with the increase of awareness diffusion probability. In addition, the growth of the average degree of the virtual-contact layer can reduce the value of this metacritical point. This research emphasizes the significant role of self-isolation behavior in curbing epidemic transmission, providing valuable perspectives for epidemic prevention through the interplay of awareness and epidemic spreading.","PeriodicalId":20067,"journal":{"name":"Physica Scripta","volume":"54 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257525","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}

引用次数: 0

Low-voltage organic field-effect transistors by using solution-processable high-κ inorganic-polymer hybrid dielectrics 使用可溶液加工的高κ无机聚合物混合电介质的低电压有机场效应晶体管

IF 2.9 3区物理与天体物理

Physica Scripta Pub Date : 2024-09-15 DOI: 10.1088/1402-4896/ad7648

Bin Rong, Wei Zhao, Yi Liao, Yixiao Zhang, Yangyang Zhu, Wei Shi and Bin Wei

{"title":"Low-voltage organic field-effect transistors by using solution-processable high-κ inorganic-polymer hybrid dielectrics","authors":"Bin Rong, Wei Zhao, Yi Liao, Yixiao Zhang, Yangyang Zhu, Wei Shi and Bin Wei","doi":"10.1088/1402-4896/ad7648","DOIUrl":"https://doi.org/10.1088/1402-4896/ad7648","url":null,"abstract":"Organic field-effect transistors (OFETs) incorporating hybrid high-κ inorganic Al2O3 and polymer dielectrics, including polyvinyl alcohol (PVA), polystyrene (PS), or polymethyl methacrylate (PMMA), through solution-processing techniques were fabricated. The analyses revealed that the high surface energy and hydrophilicity property of Al2O3 and PVA, and the relatively hydrophobic property of PS surface, hindered the performance of corresponding OFETs. The Al2O3/PMMA-based OFET achieved the optimized performance, with a threshold voltage of −2.7 V, a hole carrier mobility of 0.056 cm2/Vs, and a current on/off ratio of 1.0 × 104 at a low operating voltage of −5 V. Through analyzing the characteristics of leakage current, capacitance, contact resistance, and trap density of OFETs, we found that the PMMA-engaged films possessed the optimized electrical properties. The introduction of PMMA eliminated the interfacial trapping, thereby lowering the threshold voltage and enhancing the performance of the device. The COMSOL Multiphysics simulation was conducted to confirm the physical mechanism. The strategy of utilizing Al2O3/PMMA hybrid dielectric could simultaneously ensure the low operating voltage and good performance of OFET, while guaranteeing the low leakage current by the thick PMMA.","PeriodicalId":20067,"journal":{"name":"Physica Scripta","volume":"1 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257527","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}

引用次数: 0

Lateral stress induced blistering of tungsten exposed to deuterium plasma 暴露于氘等离子体中的钨在横向应力作用下产生的水泡

IF 2.9 3区物理与天体物理

Physica Scripta Pub Date : 2024-09-15 DOI: 10.1088/1402-4896/ad75ce

Zhenyu Jiang, Tongjun Xia, Wenjia Han, Yongzhi Shi, Wenjie Zhang and Kaigui Zhu

引用次数: 0

An energy efficient leaky integrate and fire neuron using Ge-source TFET for spiking neural network: simulation analysis 针对尖峰神经网络使用 Ge-source TFET 的高能效漏整合与发射神经元：仿真分析

IF 2.9 3区物理与天体物理

Physica Scripta Pub Date : 2024-09-15 DOI: 10.1088/1402-4896/ad76ea

Shreyas Tiwari, Rajesh Saha and Tarun Varma

引用次数: 0

The electrodynamic analysis and manipulation of PEGDA semicircular tubular structures based on optically induced dielectrophoresis 基于光诱导介电泳的 PEGDA 半圆管状结构的电动分析和操纵

IF 2.9 3区物理与天体物理

Physica Scripta Pub Date : 2024-09-15 DOI: 10.1088/1402-4896/ad77f8

Wenguang Yang, Wenhao Wang, Xiangyu Teng, Zezheng Qiao, Haibo Yu and Shuxiang Cai

{"title":"The electrodynamic analysis and manipulation of PEGDA semicircular tubular structures based on optically induced dielectrophoresis","authors":"Wenguang Yang, Wenhao Wang, Xiangyu Teng, Zezheng Qiao, Haibo Yu and Shuxiang Cai","doi":"10.1088/1402-4896/ad77f8","DOIUrl":"https://doi.org/10.1088/1402-4896/ad77f8","url":null,"abstract":"The manipulation of micron-scale semicircular tubular structures has wide applications in micro-nano processing, device manufacturing, biomedicine, and micron sensing and measurement. Here, we propose a method to fabricate and manipulate semicircular tubular structures based on optically induced dielectrophoresis (ODEP). First, electric field intensity simulations are performed for polyethylene glycol diacrylate (PEGDA) semicircular tubular structures with different conductivities and of different heights. In addition, the polarization model based on slender rods reveals that the semicircular tubular structure is subject to a negative dielectrophoretic force and tends to move along the vertical direction of the central axis. Finally, according to the maximum movement speed of the semicircular tubular structure, the resistance and dielectrophoretic force it receives are characterized. This allows for the realization of the translation and rotation operations of semicircular tubular structures of different lengths, and the assembly of multiple structures into different shapes. This assembly method holds significant promise for applications in biomedicine and the manufacturing and processing of micro-nano devices.","PeriodicalId":20067,"journal":{"name":"Physica Scripta","volume":"213 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257530","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}

引用次数: 0

A crack identification scheme based on neural network surrogate model and XFEM 基于神经网络代用模型和 XFEM 的裂纹识别方案

IF 2.9 3区物理与天体物理

Physica Scripta Pub Date : 2024-09-15 DOI: 10.1088/1402-4896/ad7706

Yudong Zhong, Xue Zeng, Junjian Hou, Ruolan Wang, Liangwen Wang, Dengfeng Zhao, Wenbin He and Yinan Zheng

{"title":"A crack identification scheme based on neural network surrogate model and XFEM","authors":"Yudong Zhong, Xue Zeng, Junjian Hou, Ruolan Wang, Liangwen Wang, Dengfeng Zhao, Wenbin He and Yinan Zheng","doi":"10.1088/1402-4896/ad7706","DOIUrl":"https://doi.org/10.1088/1402-4896/ad7706","url":null,"abstract":"Crack detection and identification is of great significance to the safety issues of engineering structures. In this paper, an intelligent crack identification scheme based on extended finite element and neural network surrogate model is proposed to realize the accurate identification of crack parameters. The method firstly employs extended finite element forward analysis to obtain the displacement data of measurement points on geometric models with different crack lengths, and inputs them as sample data to train the agent model, establishes a neural network-based inverse analysis model for crack identification, and automatically updates the threshold and weight of the neural network by using the Gray Wolf optimization algorithm to finally compute the globally optimal results. In the screening of the surrogate model, this paper verifies the advantages of the neural network surrogate model in data fitting and crack information extraction by comparing and analyzing the characteristics of neural network, support vector machine and other surrogate models, and optimizing the neural network surrogate model by adopting the Gray Wolf optimization algorithm. Finally, several numerical examples of different types of cracks are given to verify the validity of the proposed method, and the results show that the proposed method can accurately invert the geometric information of cracks.","PeriodicalId":20067,"journal":{"name":"Physica Scripta","volume":"41 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257529","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}

引用次数: 0

Symmetric structures and dynamic analysis of a (2+1)-dimensional generalized Benny-Luke equation (2+1)维广义班尼-卢克方程的对称结构和动态分析

IF 2.9 3区物理与天体物理

Physica Scripta Pub Date : 2024-09-15 DOI: 10.1088/1402-4896/ad7538

Jie Sun, Qiulan Zhao and Xinyue Li

{"title":"Symmetric structures and dynamic analysis of a (2+1)-dimensional generalized Benny-Luke equation","authors":"Jie Sun, Qiulan Zhao and Xinyue Li","doi":"10.1088/1402-4896/ad7538","DOIUrl":"https://doi.org/10.1088/1402-4896/ad7538","url":null,"abstract":"We study the symmetric structures and dynamic analysis of a (2 + 1)-dimensional generalized Benny-Luke (GBL) equation based on the Lie symmetry method, the GBL equation is an important non-integrable model of water waves. Specifically, we construct multiple exact solutions of the GBL equation and obtain its nonlocally related systems. Firstly, the Lie point symmetries and conservation laws of the GBL equation are computed, and then we get the reduced ordinary differential equation from one of the conservation laws. Multiple methods, for example, the dynamical systems method, the power series method, the homogeneous balancing method and generalized variable separation method, are used to solve the ordinary differential equation and abundant exact solutions of the GBL equation are got. Finally, we extend these exact solutions by discrete symmetries, and give three-dimensional graphs of partial exact solutions. In addition, we construct the nonlocally related PDE systems, which contains the potential systems from the conservation laws and an inverse system from a Lie point symmetry of the GBL equation. These findings reveal the dynamical behavior behind the GBL equation and broaden the range of nonlinear water wave model solutions.","PeriodicalId":20067,"journal":{"name":"Physica Scripta","volume":"281 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269258","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}

引用次数: 0

Neural network approach to investigate heat transfer in SWCNTs nanofluid within trapezoidal cavity with varied corrugated rod amplitudes 用神经网络方法研究梯形腔内不同波纹杆振幅的 SWCNTs 纳米流体的传热问题

IF 2.9 3区物理与天体物理

Physica Scripta Pub Date : 2024-09-15 DOI: 10.1088/1402-4896/ad7201

Zakir Hussain, Fazia and Muhammad Shoaib Anwar

{"title":"Neural network approach to investigate heat transfer in SWCNTs nanofluid within trapezoidal cavity with varied corrugated rod amplitudes","authors":"Zakir Hussain, Fazia and Muhammad Shoaib Anwar","doi":"10.1088/1402-4896/ad7201","DOIUrl":"https://doi.org/10.1088/1402-4896/ad7201","url":null,"abstract":"This article presents Artificial Neural Networks (ANN) for convective heat transfer in a trapezoidal cavity subjected to corrugated heated rod inside it. The LevenbergMarquardt algorithm is utilized to optimize the Neural Networks. The trapezoidal cavity has low-temperature inclined walls and adiabatic upper and lower walls compared to the corrugated heated rod. Single-wall carbon (SWCNTs) nanomaterials are submerged in the base liquid water. The flow of SWCNTs-water is generated due to the temperature gradient in the cavity. The system of dimensional partial differential equations has been formulated for the physical setup under investigation. The dimensional system has been converted into a non-dimensional form using dimensionless variables. Finite element is used for the solutions. The dimensionless functions velocity, temperature, and heat transfer rates are studied against the Rayleigh number (Ra). The outcomes are presented in the form of isotherms, contours, tabular values, and graphs. The data for Artificial Neural Networks (ANN) has been generated by FEM against the Nusselt number. The ANN has been trained for a specific amplitude of the rod and predicted heat transfer against a larger amplitude. The results show good agreement for both training and testing data. The outcomes of analysis reveals that convection caused by temperature gradient is dominant for higher values of the Rayleigh number (Ra). Local Nusselt number has been discussed against different amplitudes, and predicted enhancement for the larger amplitude of the rod.","PeriodicalId":20067,"journal":{"name":"Physica Scripta","volume":"213 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257491","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}

引用次数: 0