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大兴安岭白桦削度方程

林业科学 2020年第11期56卷 87-96页

作者： shahzad muhammad Khurram Hussain Amna 何培姜立春东北林业大学林学院森林生态系统可持续经营教育部重点实验室哈尔滨150040

【目的】确定预测东北地区白桦不同高度直径和材积的最优削度方程,以弥补该地区没有白桦削度方程的不足。【方法】以伊勒呼里山北坡西北部立地亚区253株白桦伐倒木3795对直径/高度数据为基础,基于林业上广泛应用的8个削度方程,利用SAS... 详细信息

【目的】确定预测东北地区白桦不同高度直径和材积的最优削度方程,以弥补该地区没有白桦削度方程的不足。【方法】以伊勒呼里山北坡西北部立地亚区253株白桦伐倒木3795对直径/高度数据为基础,基于林业上广泛应用的8个削度方程,利用SAS软件的非线性回归SUR法对方程进行拟合。使用一阶连续自回归误差结构模拟方程误差项并解释空间自相关,采用条件数评价方程多重共线性,选择确定系数(R 2)、均方根误差(RMSE)、平均误差绝对值(MAB)和相对误差绝对值(MPB)作为方程评价指标,运用拟合统计量、直径和材积残差分布箱式图及检验统计量进行削度方程的综合比较。【结果】1)从各削度方程拟合统计量来看,Kozak(2004)-2、Fang等(2000)和Max等(1976)方程排在前3位,Sharma等(2001)方程表现最差;2)基于直径和材积残差分布箱式图,Kozak(2004)-2、Fang等(2000)、Max等(1976)和Bi(2000)方程在预测直径和材积时误差较小且具有相似的等方差分布,Sharma等(2001)、Sharma等(2004)、Sharma等(2009)和Kozak(2004)-1方程具有较强的方差异质性;3)模型检验证实Kozak(2004)-2、Fang等(2000)和Max等(1976)方程表现较好,Kozak(2004)-2削度方程在预测直径和材积方面表现出一致性,且优于其他削度方程。【结论】根据模型拟合和检验统计量、图形分析和条件数,Kozak(2004)-2方程被推荐用于预测东北地区白桦不同高度的直径、总材积和商品材积。

关键词：白桦削度材积自相关多重共线性

Effect of Reaction Temperature and Time on the Structural Properties of Cu(In,Ga)Se_2 Thin Films Deposited by Sequential Elemental Layer Technique

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Journal of Materials Science & Technology 2007年第4期23卷 499-503页

作者： Saira RIAZ shahzad NASEEM Centre for Solid State Physics University of the Punjab QACLahore-54590Pakistan

Thin films of copper indium gallium selenide Cu（In,Ga）Se2 （CIGS） were prepared by sequential elemental layer deposition in vacuum at room temperature. The as-deposited films were heated in vacuum for compound formation, and were studied at temperature as high as 1250℃ for the first time. These films were concurrently studied for their structural properties by X-ray diffraction （XRD） technique. The XRD analyses include phase transition studies, grain size variation and microstrain measurements with the reaction temperature and *** has been observed that there are three distinct regions of variation in all these parameters. These regions belong to three temperature regimes：〈450℃, 450-950℃, and 〉950℃. It is also seen that the compound formation starts at 250℃, with ternary phases appearing at 350℃ or above. Whereas, there is another phase shift at 950℃ without any preference to the quaternary compound.

关键词： Cu(In,Ga)Se2 (CIGS) X-ray Diffraction Thin films Structural analysis

Resource Based Automatic Calibration System (RBACS) Using Kubernetes Framework

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Intelligent Automation & Soft Computing 2023年第1期35卷 1165-1179页

作者： Tahir Alyas Nadia Tabassum muhammad Waseem Iqbal Abdullah S.Alshahrani Ahmed Alghamdi Syed Khuram shahzad Department of Computer Science Lahore Garrison UniversityLahore54000Pakistan Department of Computer Science&IT Virtual University of PakistanLahore54000Pakistan Department of Software Engineering The Superior UniversityLahore54000Pakistan Department of Computer Science&Artificial Intelligence College of Computer Science&EngineeringUniversity of Jeddah21493Saudi Arabia Department of Software Engineering College of Computer Science and EngineeringUniversity of Jeddah21493Saudi Arabia Department of Informatics&Systems University of Management&TechnologyLahore54000Pakistan

Kubernetes,a container orchestrator for cloud-deployed applications,allows the application provider to scale automatically to match thefluctuating intensity of processing *** cluster technology is used to encapsulate,isolate,and deploy applications,addressing the issue of low system reliability due to interlocking ***-based platforms usually entail users define application resource supplies for eco container *** is a constant problem of over-service in data centers for cloud service *** operating costs and incompetent resource utilization can occur in a waste of *** revolutionized the orchestration of the container in the cloud-native *** can adaptively manage resources and schedule containers,which provide real-time status of the cluster at runtime without the user’s *** clusters face unpredictable traffic,and the cluster performs manual expansion configuration by the *** to operational delays,the system will become unstable,and the service will be *** work proposed an RBACS that vigorously amended the distribution of containers operating in the entire Kubernetes *** allocation pattern is analyzed with the Kubernetes *** estimate the overall cost of RBACS,we use several scientific benchmarks comparing the accomplishment of container to remote node migration and on-site *** experiments ran on the simulations to show the method’s effectiveness yielded high precision in the real-time deployment of resources in eco *** to the default baseline,Kubernetes results in much fewer dropped requests with only slightly more supplied resources.

关键词： Docker container virtualization cloud resource kubernetes

Bulk moduli of two-dimensional Yukawa solids and liquids obtained from periodic compressions

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Plasma Science and Technology 2023年第3期25卷 15-20页

作者：卢少瑜黄栋 A shahzad 冯岩 Institute of Plasma Physics and Technology School of Physical Science and TechnologySoochow UniversitySuzhou 215006Peopleʼs Republic of China Department of Physics Government College University Faisalabad(GCUF)Allama Iqbal RoadFaisalabad 38040Pakistan National Laboratory of Solid State Microstructures Nanjing UniversityNanjing 210093Peopleʼs Republic of China

Langevin dynamical simulations are performed to determine the bulk modulus in twodimensional(2D) dusty plasmas from uniform periodic radial compressions. The bulk modulus is calculated directly from its physical definition of the ratio of the internal pressure/stress to the volume strain. Under various conditions, the bulk moduli obtained agree with the previous theoretical derivations from completely different approaches. It is found that the bulk moduli of2D Yukawa solids and liquids are almost independent of the system temperature and the external compressional frequency.

关键词： bulk modulus dusty plasma simulation Langevin complex plasma Yukawa systems

Enhancement in energy product in Sm-Co/Fe exchange coupled magnetic layers with molybdenum interlayers

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Journal of Rare Earths 2010年第2期28卷 274-276页

作者： Furrukh shahzad Saadat Anwar Siddiqi Centre for Solid State Physics University of the Punjab School of Physics and Microelectronics Shandong University

Trilayers of Sm-Co/Mo/Fe were deposited by DC and RF magnetron sputtering on Si(100) substrate at 650 °*** of very thin Mo interlayers on energy product of magnetic layers was *** the samples showed strong exchange coupling and single phase *** increasing Mo interlayer thickness,we observed oscillating behavior of saturation magnetization and energy *** rise in energy product was observed as 22% for 0.3 nm Mo interlayer as compared to sample without Mo interlayer.

关键词： exchange spring magnet nanocomposite (BH)max product rare earths

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基于嗅觉可视化技术的眉茶等级分类方法

食品科学 2022年第24期43卷 335-341页

作者：丁煜函葛东营荆磊 muhammad shahzad 江辉江苏大学高效能电机系统与智能控制研究院江苏镇江212013 江苏大学电气信息工程学院江苏镇江212013

为了快速、准确地对眉茶等级进行分类,提出了一种基于嗅觉可视化技术的眉茶等级快速分类方法。首先,根据卟啉显色反应预实验结果,选定了12种显色效果明显的卟啉指示剂制备嗅觉可视化传感器阵列,通过该传感器阵列与不同等级的眉茶茶汤进... 详细信息

为了快速、准确地对眉茶等级进行分类,提出了一种基于嗅觉可视化技术的眉茶等级快速分类方法。首先,根据卟啉显色反应预实验结果,选定了12种显色效果明显的卟啉指示剂制备嗅觉可视化传感器阵列,通过该传感器阵列与不同等级的眉茶茶汤进行反应,获取不同的特征图像。然后,对特征图像数据进行主成分分析和降维,将得到的不同维数的主成分分析结果作为输入变量,构建支持向量机(support vector machine,SVM)眉茶等级分类模型。最后,引入3种群体智能优化算法(萤火虫算法、灰狼优化算法、布谷鸟算法)对SVM分类模型的惩罚因子c和核函数参数g进行优化。结果显示:未经优化的SVM分类模型对测试集的分类正确率为80%,所需的主成分个数为12个;经过优化的SVM模型的分类正确率均有所提升,其中经过布谷鸟算法优化的SVM模型对测试集的分类正确率达到了93.3%,且所需的主成分个数减少为6个。这表明应用嗅觉可视化技术能够实现对眉茶等级的分类,而通过群体智能优化算法优化SVM分类模型可以显著增强模型的性能,提高分类正确率。

关键词：眉茶嗅觉可视化等级分类支持向量机群体智能优化算法

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Improved-Equalized Cluster Head Election Routing Protocol for Wireless Sensor Networks

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Computer Systems Science & Engineering 2023年第1期44卷 845-858页

作者： muhammad Shahzeb Ali Ali Alqahtani Ansar Munir Shah Adel Rajab Mahmood Ul Hassan Asadullah Shaikh Khairan Rajab Basit shahzad Department of Computer Science Institute of Southern PunjabMultan5932Pakistan College of Computer Science and Information Systems Najran UniversityNajran61441Saudi Arabia Department of Computer Skills Deanship of Preparatory YearNajran UniversityNajran61441Saudi Arabia Department of Engineering National University of Modern LanguagesIslamabad44000Pakistan

Throughout the use of the small battery-operated sensor nodes encou-rage us to develop an energy-efficient routing protocol for wireless sensor networks(WSNs).The development of an energy-efficient routing protocol is a mainly adopted technique to enhance the lifetime of *** routing protocols are available,but the issue is still *** is one of the most important techniques in the existing routing *** the clustering-based model,the important thing is the selection of the cluster *** this paper,we have proposed a scheme that uses the bubble sort algorithm for cluster head selection by considering the remaining energy and the distance of the nodes in each ***,the bubble sort algorithm chose the two nodes with the maximum remaining energy in the cluster and chose a cluster head with a small *** proposed scheme performs hierarchal routing and direct routing with some energy *** simulation will be performed in MATLAB to justify its performance and results and compared with the ECHERP model to justify its ***,the simulations will be performed in two scenarios,gate-way-based and without gateway to achieve more energy-efficient results.

关键词： Bubble sort algorithm gateway energy thresholds wireless sensor networks

Deep metallogenic mechanism in southeastern China based on receiver function data

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Transactions of Nonferrous Metals Society of China 2022年第1期32卷 273-284页

作者： Jian-xin LIU Syed muzyan shahzad Ya SUN Asim shahzad Chuan LI Meryem FANIDI Ishfaque muhammad School of Geosciences and Info-physic Central South UniversityChangsha 410083China Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of EducationCentral South UniversityChangsha 410083China Hunan Provincial Key Laboratory of Nonferrous Resources and Geological Hazard Detection Central South UniversityChangsha 410083China College of Earth Sciences Guilin University of TechnologyGuilin 541006China

Crustal deformation and deep metallogenic mechanisms in southeastern(SE)China are still *** this study,we applied the receiver function method to measure crustal thickness and Poisson’s ratio for crustal rock using teleseismic data recorded at 207 seismic stations from China Earthquake Administration *** results showed that crustal thickness varied from~27 km in the eastern part to~43 km in the western part of the study area,with an average crustal thickness of 31 *** crust is thick in the west and thin in the *** observed Poisson’s ratio for crustal rock was relatively high in the southern Cathaysia Block(CB),with an average of 0.295,while in the Qinling—Dabie terrane,it was relatively low,with an average of *** the middle of the Yangtze craton and central east of the CB,Poisson’s ratio for crustal rock varied from 0.257 to *** comparing Poisson’s ratio of the intrusive deposits with that of igneous rocks in volcanic complexes,we deduced that the metallic mineral system might be associated with orogenic and hydrothermal *** results indicated that multistage magma and mineralization in the study area might be attributed to the tectonic-magma-thermal *** high Poisson’s ratio for crustal rock in the southeastern margin of the CB and northeastern Upper Yangtze Craton might be related to Mesozoic lower crustal mafic partial melt,which provides an important environment for various magmatic intrusions and metallogenies.

关键词： deep metallogenic mechanism Poisson’s ratio southeastern China crustal thickness

Optimal Location and Sizing of Conglomerate DG-FACTS using an Artificial Neural Network and Heuristic Probability Distribution Methodology for Modern Power System Operations

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Protection and Control of Modern Power Systems 2022年第1期7卷 124-148页

作者： Anwar shahzad Siddiqui Prashant Department of Electrical Engineering Faculty of Engineering&TechnologyJamia Millia IslamiaJamia NagarOkhlaNew Delhi 110025India

In existing power system networks,the positioning and sizing of multi-DG is critical at the optimum locations for effective energy *** optimal power flow is assessed using the NR method(without DG)in which performance parameters such as real power loss,accuracy,selectivity and MSE are obtained,but in an undesirable *** meet load demand;multi-DGs are placed and their optimal locations are assessed by the proposed heuristic probability distribution methodology and an ANN because existing techniques provides poor performance parameters for selecting the location and sizing of *** optimal positions of multi-DGs are estimated in terms of performance parameters including real power loss of transmission network,accuracy,selectivity and MSE,while the performance parameters obtained with the ANN are better than the heuristic ***,the sizing of multi-DGs is evaluated in relation to active and reactive *** is found that that sizes of multi-DGs are smaller with ANN than with heuristic *** is preferable to connect the buses having lowest real power losses with the smallest *** performance analysis is tested in the standard IEEE 9-bus and IEEE 57-bus systems on *** improve the distortion level in real and reactive power,multi-FACTS namely TCSC,TSC and STATCOM are *** switching of TCSC and TSC is done by SPWM while STATCOM switching is controlled with *** locations of multi-FACTS devices are chosen for buses having larger distortion and the sizing of multi-FACTS devices is also optimally *** application of multi-FACTS devices helps to improve power quality and fulfill load demand with minimal size in order to make the system economical.

关键词： DG Location Sizing FACTS ANN ANFIS