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Evolution and Effectiveness of Loss Functions in Generative Adversarial Networks

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China Communications 2021年第10期18卷 45-76页

作者： Ali Syed Saqlain Fang Fang Tanvir Ahmad Liyun Wang zain-ul Abidin School of Control and Computer Engineering North China Electric Power UniversityBeijing 102206China Department of Computer Science Portland State UniversityPortland 97207U.S. School of Information and Communication Engineering South West Jiaotong UniversityChengdu 610031China

Recently,the evolution of Generative Adversarial Networks(GANs)has embarked on a journey of revolutionizing the field of artificial and computational *** improve the generating ability of GANs,various loss functions are introduced to measure the degree of similarity between the samples generated by the generator and the real data samples,and the effectiveness of the loss functions in improving the generating ability of *** this paper,we present a detailed survey for the loss functions used in GANs,and provide a critical analysis on the pros and cons of these loss ***,the basic theory of GANs along with the training mechanism are ***,the most commonly used loss functions in GANs are introduced and ***,the experimental analyses and comparison of these loss functions are presented in different GAN ***,several suggestions on choosing suitable loss functions for image synthesis tasks are given.

关键词： loss functions deep learning machine learning unsupervised learning generative adversarial networks(GANs) image synthesis

Research on Game Environment Optimization with the Shadow Masking and Level of Detail

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Research on Game Environment Optimization with the Shadow Ma...

作者： ABIDIN zain ul 济南大学

学位级别：硕士

Re-analysis of temperature dependent neutron capture rates and stellarβ-decay rates of^(95-98)Mo

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Chinese Physics C 2024年第9期48卷 142-149页

作者： Abdul Kabir Jameel-Un Nabi Muhammad Tahir Abdul Muneem zain ul Abideen Space and Astrophysics Research lab National Centre of GIS and Space ApplicationsDepartment of Space ScienceInstitute of Space TechnologyIslamabad 44000Pakistan University of Wah Quaid AvenueWah Cantt 47040PunjabPakistan Faculty of Engineering Sciences GIK Institute of Engineering Sciences and TechnologyTopi 23640Khyber PakhtunkhwaPakistan

The neutron capture rates and temperature dependent stellar beta decay rates of Mo isotopes are investigated within the framework of the statistical code TALYS v1.96 and the proton neutron quasi particle random phase approximation(pn-QRPA)*** Maxwellian average cross-section(MACS)and neutron capture rates for the^(95-98)Mo(n,γ)^(96-99)Mo radiative capture process are analyzed within the framework of the statistical code TALYS v1.96 based on the phenomenological nuclear level density model and gamma strength *** present model-based computations for the MACS are comparable to the existing measured *** sensitivity of stellar weak interaction rates to various densities and temperatures is investigated within the framework of the pn-QRPA *** attention is paid to the impact of thermally filled excited states in the decaying nuclei(^(95-98)Mo)on electron emission and positron capture ***,we compare the neutron capture rates and stellar beta decay *** is found that neutron capture rates are higher than stellar beta decay rates at both lower and higher temperatures.

关键词： cross-section TALYS nuclear level density decay rates capture rates

The Role of Machine Learning and Reconfigurable Intelligent Surfaces in Next-Generation Wireless Security

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The Role of Machine Learning and Reconfigurable Intelligent ...

作者： SYED zain ul ABIDEEN 青岛大学

学位级别：硕士

Multi-Attribute Group Decision-Making Method under Spherical Fuzzy Bipolar Soft Expert Framework with Its Application

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Computer Modeling in Engineering & Sciences 2023年第11期137卷 1891-1936页

作者： Mohammed M.Ali Al-Shamiri Ghous Ali Muhammad zain ul Abidin Arooj Adeel Department of Mathematics Faculty of Science and ArtsMahayl AssirKing Khalid UniversityAbhaSaudi Arabia Department of Mathematics and Computer Faculty of ScienceIbb UniversityIbbYemen Department of Mathematics Division of Science and TechnologyUniversity of EducationLahorePakistan

Spherical fuzzy soft expert set(SFSES)theory blends the perks of spherical fuzzy sets and group decision-making into a unified *** allows solutions to highly complicated uncertainties and ambiguities under the unbiased supervision and group decision-making of multiple ***,SFSES theory has some deficiencies such as the inability to interpret and portray the bipolarity of *** work highlights and overcomes these limitations by introducing the novel spherical fuzzy bipolar soft expert sets(SFBSESs)as a powerful hybridization of spherical fuzzy set theory with bipolar soft expert sets(BSESs).Followed by the development of certain set-theoretic operations and properties of the proposed model,important problems,including the selection of non-powered dam(NPD)sites for hydropower conversion are discussed and solved under the proposed *** problems mainly focus on the need for an efficient tool capable of considering the bipolarity of parameters,complicated ambiguities,and multiple *** the new approach by a detailed comparative analysis,it is concluded that the proposed model is more comprehensive and reliable for multi-attribute group decisionmaking(MAGDM)than the previous tools,particularly considering the bipolarity of parameters under SFSES environment.

关键词： Spherical fuzzy sets bipolar soft expert sets group decision-making algorithm non-powered dams

Tectonic Imprints of the Hazara Kashmir Syntaxis on the Mesozoic Rocks Exposed in Munda, Mohmand Agency, Northwest Pakistan

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Acta Geologica Sinica(English Edition) 2016年第2期90卷 440-455页

作者： Asghar ALI Umer HABIB Atta Ur REHMAN Noor ZADA zain ul ABIDIN Muhammad ISMAIL Department of Geology University of Peshawar

Two well-developed mesoscopic folds, D_2 and D_3, which postdate the middle amphibolite metamorphism, were recognized in the western hinterland zone of Pakistan. NW–SE trending D_2 folds developed during NE–SW horizontal bulk shortening followed by NE–SW trending D_3 folds, which developed during SE–NW shortening. Micro- to mesoscopically the NW–SE trending S2 crenulation cleavage, boudins and mineral stretching lineations are overprinted by D_3. The newly established NW–SE trending micro- to mesoscopic structures in Munda termed D_2, which postdated F_1/F_2, is synchronously developed with F3 structures in the western hinterland zone of Pakistan. We interpret that D2 and D3 folds are counterclockwise rotated in the tectonic event that has evolved the Hazara Kashmir Syntaxis after the main phase Indian plate and Kohistan Island Arc collision. Chlorite replacement by biotite in the main matrix crenulation cleavages indicates prograde metamorphism related with D2. The inclusion of muscovite and biotite in garnet porphyroblasts and the presence of staurolite in these rocks indicate that the Barrovian metamorphic conditions predate D2 and D3. We interpret that garnet, staurolite and calcite porphyroblasts grew before D2 because the well developed S2 crenulation cleavage wraps around these porphyroblasts.

关键词： western hinterland zone Hazara Kashmir Syntaxis mesostructures microstructures metamorphism tectonics

Reversible and irreversible adsorption of bare and hybrid silica nanoparticles onto carbonate surface at reservoir condition

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Petroleum 2020年第3期6卷 277-285页

作者： zain-ul-Abedin Arain Sarmad Al-Anssari Muhammad Ali Shoaib Memon Masood Ahmed Bhatti Christopher Lagat Mohammad Sarmadivaleh Department of Petroleum Engineering WA School of Mines:MineralsEnergy and Chemical EngineeringCurtin University26 Dick Perry Avenue6151KensingtonAustralia Department of Chemical Engineering College of EngineeringUniversity of BaghdadBaghdadIraq School of Engineering Edith Cowan University270 Joondalup DriveJoondalupWA6027Australia Premier Oilfield Solutions Australia

Realistic implementation of nanofluids in subsurface projects including carbon geosequestration and enhanced oil recovery requires full understanding of nanoparticles(NPs)adsorption behaviour in the porous *** physicochemical interactions between NPs and between the NP and the porous media grain surface control the adsorption behavior of *** study investigates the reversible and irreversible adsorption of silica NPs onto oil-wet and water-wet carbonate surfaces at reservoir *** carbonate sample was treated with different concentrations of silica nanofluid to investigate NP adsorption in terms of nanoparticles initial size and hydrophobicity at different temperatures,and *** behaviour and the reversibility of NP adsorption onto carbonate surfaces was measured using dynamic light scattering(DLS),scanning electron microscope(SEM)images,energy dispersive X-ray spectroscope(EDS),and atomic force microscope(AFM)*** show that the initial hydrophilicity of the NP and the carbonate rock surface can influence the NPs adsorption onto the rock ***,oppositely charged NP and rock surface are attracted to each other,forming a mono or multilayers of NPs on the *** conditions including pressure and temperature have shown minor influence on nano-treatment ***,DLS measurement proved the impact of hydrophilicity on the stability and adsorption trend of *** was also confirmed by SEM ***,AFM results indicated that a wide-ranging adsorption scenario of NPs on the carbonate surface *** results were obtained from the EDS *** study thus gives the first insight into NPs adsorption onto carbonate surfaces at reservoirs conditions.

关键词： Nanofluid Silica nanoparticles Wettability Contact angle Surface treatment Adsorption Salinity Carbonate reservoir Carbonate

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空间域安全图像隐写技术研究

空间域安全图像隐写技术研究

作者： zain ul Abedin 华北电力大学(北京)

学位级别：硕士

隐写术是一种将信息或数据隐藏到数字图像中的技术。根据是否带有隐藏信息,可以将图像分为含密图像和载体图像。数字图像在表示上具有很高的冗余度,因此可用于隐藏数据。图像隐写术主要可以分为空间域和变换域。图像隐写术的最基本技术... 详细信息

隐写术是一种将信息或数据隐藏到数字图像中的技术。根据是否带有隐藏信息,可以将图像分为含密图像和载体图像。数字图像在表示上具有很高的冗余度,因此可用于隐藏数据。图像隐写术主要可以分为空间域和变换域。图像隐写术的最基本技术是利用最低有效位（LSB）替换隐写算法。存在大量可以将秘密信息或数据隐藏到数字图像中的隐写技术。每种方法各有利弊。因此,有必要建立更准确的隐写分析技术,能够检测出使用各种隐写方法所产生的隐藏信息。本工作旨在提出一种以更好的视觉质量提高隐藏容量的算法,首先采用无损霍夫曼压缩技术来压缩秘密信息,此外,还测量了从载体图像中获取的信息块与秘密信息块之间的相似性,以减小载体图像中比特的变化。本文将所提出的技术的结果与现有技术进行了比较,所得的参数,即峰值信噪比（PSNR）、均方误差（MSE）和归一化互相关（NCC）均优于现有技术。所提工作的实验结果显示了出色的性能。这给实际的部署和未来工作提供进一步的帮助。

关键词：信息隐藏隐写术空间域隐写术隐秘图像自适应嵌入隐写分析

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深基坑双排支护桩受力特性研究

深基坑双排支护桩受力特性研究

作者： zain ul ABDIN 西安理工大学

学位级别：硕士

当前,随着社会经济的逐步发展和越来越城市化,在土木建设工程中深基坑支护获得了越来越多的关注,也成为了时下的难点。靠近地铁隧道、地铁站等地下结构的深基坑支护结构,受附近地下建筑物和土体的约束,影响支护结构的支护方式和变形稳定... 详细信息

当前,随着社会经济的逐步发展和越来越城市化,在土木建设工程中深基坑支护获得了越来越多的关注,也成为了时下的难点。靠近地铁隧道、地铁站等地下结构的深基坑支护结构,受附近地下建筑物和土体的约束,影响支护结构的支护方式和变形稳定性,导致土压力分布不同本研究在前人研究的基础上,针对地铁隧道双排桩、基坑、基坑支护结构的联合作用,建立了三维有限元模型,采用大型通用计算程序ABAQUS模拟西安施工过程的单元计算模型。研究了有限宽度土深基孔双排桩支护系统的理想设计方法和变形特性,得出以下结论:1、在地铁隧道附近的深基坑工程中,双排桩能有效应对复杂的周边环境,减少基坑周围土体位移,为基坑开挖提供良好的支撑。本文介绍了双排桩支撑系统的参数优化:桩长33米,桩径1.2米,桩刚度,桩间距2D,桩排间距4D。2、双排桩支护结构与单排桩的变形特征不同:单排桩的变形曲线是上大下小的渐变曲线,而双排桩的变形曲线是上下小、中间大的弓形或双反弯点曲线。双排桩支撑体系中桩体的最大位移明显小于单排桩支撑结构。冠梁的存在可以极大地改变双排桩的变形状况,导致桩顶位移显著减小。前后桩会有一个中间大的弓形或双反弯点位移曲线并且两侧细小。3、双排桩支护系统受力或变形情况的变化,可由桩长、直径、刚度、桩间距、桩排间距的变化引起:使基坑周围的土壤更受限制。(1)桩长由27m增加到35m时,桩的最大水平位移降低了 2cm左右,降低幅度为29%。桩长可以改变双排桩支撑结构的变形形式,有效减小桩顶位移和最大位移,有效增加桩的嵌入效果。能有效减小双排桩的水平位移,有利于双排桩支护结构的稳定性。(2)桩径由0.6m增加至1.4m时,桩身最大水平位移降低3cm左右,降低幅度为38%°双排桩的横向抗弯刚度随着桩径的增加而增加,这显著增强了双排桩对基坑周围土体的限制作用。该技术有效地减少了基坑周围的水平土壤位移,同时还增加了双排桩支撑结构的稳定性。(3)当柱刚度从0.5EI增加到1.5EI时,桩的最大水平位移减少了 2.2cm左右,相关减少了 27%。增加桩身刚度,提高桩身对周围土体的抵抗力,从而减小桩身的水平位移,有利于双排桩支护系统的稳定性。(1)国家研究表明,当桩距从2D增加到6D时,后桩的最大水平位移增加了1.99cm,而前桩的最大水平位移增加了 3.3c,上升率分别为52%和75%,前排桩的水平位移增加比后排桩大得多。随着桩间距的增加,相同间距内的双排桩数量会减少,其横向抗弯能力会不知不觉地降低,这对基坑的支护条件是不利的。(2)桩排间距由2D增加到6D时,前后桩最大水平位移分别减少3.32cm和2.65cm,减少幅度分别为50.69%和38.97%。通过增加双排桩的桩排间距,可以调整桩间土壤的分布比例,从而减少桩的水平位移。随着桩排间距的增加,桩的水平位移会继续减小。1、针对双排桩不同弯矩分布特点,采用多种加固方法,降低工程造价:当桩长和单桩弯矩分布不同时,可采用分段加固。当前后排桩的直径和弯矩不同时,可以使用不对称加固。当桩排间距和单桩弯矩增加量不同时,可以同时使用分段配筋和不对称配筋。2、随着基础隧道距离从10米增加到30米,地铁隧道水平位移从5.6米下降到2.1米,相关减少62.9%;垂直位移从3.7米减少到0.7米,减少了 80.7%。由于减小幅度较大,水平和竖向位移均呈下降趋势。基坑开挖对地铁隧道的影响越明显,基坑与隧道的距离越近。地铁隧道的存在会使基坑与隧道距离较小时改变双排桩的力学变形性能,降低基坑与隧道之间的地表沉降,但地表沉降距离基坑末端会不断增加,地铁隧道对基坑有一定的屏蔽作用;当基坑与隧道距离较大时,基坑与隧道之间的地表沉降减小,但地表沉降远离。3、随着基坑开挖深度由15米增加到25米,地铁隧道水平位移由0.7厘米增加到11.6厘米,相差1426.3%;垂直位移由2.5cm增加到10.4cm,相差308.2%。横轴和纵轴位移均呈上升趋势,增长幅度异常大。基坑开挖对地铁管道的影响越大,基坑开挖深度越深。地铁隧道的存在对其紧邻的基坑开挖有重大影响。地铁隧道的存在可以改变基坑与地铁隧道之间的土体沉降方式,以及双排桩支护系统的变形特性。随着基坑开挖深度的增加,地铁隧道对基坑开挖的影响会逐渐减弱,双排桩支护结构的水平位移会明显增加,基坑周围的地表沉降会迅速增加。

关键词：深基坑双排桩地铁隧道有限元数值模拟