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A Quarterly High RFM Mining Algorithm for Big Data Management

Computers, Materials & Continua 2024年第9期80卷 4341-4360页

作者： Cuiwei Peng Jiahui Chen Shicheng Wan guotao Xu School of International Education Guangdong University of TechnologyGuangzhou510006China School of Computer Science and Technology Guangdong University of TechnologyGuangzhou510006China Business Administration South China University of TechnologyGuangzhou510641China Guangzhou Institute of Technology Xidian UniversityGuangzhou710071China

In today’s highly competitive retail industry,offline stores face increasing pressure on *** hope to improve their ability in shelf management with the help of big data *** this,on-shelf availability is an essential indicator of shelf data management and closely relates to customer purchase ***(recency,frequency,andmonetary)patternmining is a powerful tool to evaluate the value of customer ***,the existing RFM patternmining algorithms do not consider the quarterly nature of goods,resulting in unreasonable shelf availability and difficulty in *** solve this problem,we propose a quarterly RFM mining algorithmfor On-shelf products named *** algorithmmines the high recency,high frequency,and high monetary patterns and considers the period of the on-shelf goods in quarterly *** conducted experiments using two real datasets for numerical and graphical analysis to prove the algorithm’s *** with the state-of-the-art RFM mining algorithm,our algorithm can identify more patterns and performs well in terms of precision,recall,and F1-score,with the recall rate nearing 100%.Also,the novel algorithm operates with significantly shorter running times and more stable memory usage than existing mining ***,we analyze the sales trends of products in different quarters and seasonal *** analysis assists businesses in maintaining reasonable on-shelf availability and achieving greater profitability.

关键词： Data mining recency pattern high-utility itemset RFM pattern mining on-shelf management

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A Gaussian Noise-Based Algorithm for Enhancing Backdoor Attacks

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Computers, Materials & Continua 2024年第7期80卷 361-387页

作者： Hong Huang Yunfei Wang guotao Yuan Xin Li School of Computer Science and Engineering Sichuan University of Science&EngineeringYibin644000China

Deep Neural Networks(DNNs)are integral to various aspects of modern life,enhancing work ***-less,their susceptibility to diverse attack methods,including backdoor attacks,raises security *** aim to investigate backdoor attack methods for image categorization tasks,to promote the development of DNN towards higher *** on backdoor attacks currently faces significant challenges due to the distinct and abnormal data patterns of malicious samples,and the meticulous data screening by developers,hindering practical attack *** overcome these challenges,this study proposes a Gaussian Noise-Targeted Universal Adversarial Perturbation(GN-TUAP)*** approach restricts the direction of perturbations and normalizes abnormal pixel values,ensuring that perturbations progress as much as possible in a direction perpendicular to the decision hyperplane in linear *** limits anomalies within the perturbations improves their visual stealthiness,and makes them more challenging for defense methods to *** verify the effectiveness,stealthiness,and robustness of GN-TUAP,we proposed a comprehensive threat *** on this model,extensive experiments were conducted using the CIFAR-10,CIFAR-100,GTSRB,and MNIST datasets,comparing our method with existing state-of-the-art attack *** also tested our perturbation triggers using various defense methods and further experimented on the robustness of the triggers against noise filtering *** experimental outcomes demonstrate that backdoor attacks leveraging perturbations generated via our algorithm exhibit cross-model attack effectiveness and superior ***,they possess robust anti-detection capabilities and maintain commendable performance when subjected to noise-filtering methods.

关键词： Image classification model backdoor attack gaussian distribution Artificial Intelligence(AI)security

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Hybrid 3D printed three-axis force sensor aided by machine learning decoupling

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International Journal of Smart and Nano Materials 2024年第2期15卷 261-278页

作者： guotao Liu Peishi Yu Yin Tao Tao Liu Hezun Liu Junhua Zhao Jiangnan Key Laboratory of Advanced Food Manufacturing Equipment and Technology School of Mechanical EngineeringJiangnan UniversityWuxiPR China Jiangsu Province Engineering Research Center of Micro-Nano Additive and Subtractive Manufacturing Institute of Advanced TechnologyJiangnan UniversityWuxiPR China

Identification of magnitude and orientation for spatially applied loading is highly desired in the fields of not only the machinery components but also human-machine *** the fact that the 3-axis force sensor with different structures has been proposed to measure the spatial force,there are still some common limitations including the multi-step manufacturing-assembly processes and complicated testing of decoupling ***,we propose a rapid fabrication strategy with low-cost to achieve high-precision 3-axis force *** sensor is designed to compose of structural Maltese cross base and sensing *** is directly fabricated within one step by a hybrid 3D printing technology combining deposition modeling(FDM)with direct-ink-writing(DIW).In particular,a machine learning(ML)model is used to convert the strain signal to the force *** of a mount of calibration tests,this ML model is trained by sufficient simulation data based on programmed batch finite element *** sensor is capable of continuously identifying a spatial force with varying magnitude and orientation,which successfully quantify the applied force of traditional Chinese medicine physiotherapy including Gua Sha and *** work provides insight for design and rapid fabrication of multi-axis force sensors,as well as potential applications.

关键词： Hybrid 3D printing 3-axis force sensor machine learning nonlinear decoupling

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Bubble dynamics properties of B-particles in a quasi-2. gas-solid fluidized bed:Computational particle fluid dynamics numerical simulation and post-processed by digital image analysis technique

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Particuology 2024年第3期86卷 223-238页

作者： Zemin Yuan Zhong Huang guotao Qin Guanjia Zhao Suxia Ma Hairui Yang Guangxi Yue Key Laboratory of Clean and Efficient Combustion and Utilization in the Circulating Fluidized Bed Taiyuan University ofTechnologyTaiyuan030024China Department of Energy and Power Engineering Tsinghua UniversityBeijing100084.China

Bubble dynamics properties play a crucial and significant role in the design and optimization of gas-solid fluidized *** this study,the bubble dynamics properties of four B-particles were investigated in a quasi-two-dimensional(quasi-2.)fluidized bed,including bubble equivalent diameter,bubble size distribution,average bubble density,bubble aspect ratio,bubble hold-up,bed expansion ratio,bubble radial position,and bubble *** studies were performed by computational particle fluid dynamics(CPFD)numerical simulation and post-processed with digital image analysis(DIA)technique,at superficial gas velocities ranging from 2._(mf) to 7u_(mf).The simulated results shown that the CPFD simulation combining with DIA technique post-processing could be used as a reliable method for simulating bubble dynamics properties in quasi-2. gas-solid fluidized ***,it seemed not desirable for the simulation of bubble motion near the air distributor at higher superficial gas velocity from the simulated average bubble density *** superficial gas velocity significantly affected the bubble equivalent diameter and evolution,while it had little influence on bubble size distribution and bubble aspect ratio distribution for the same *** time-averaged bubble hold-up and bed expansion ratio increased with the increase of superficial gas *** core-annular flow structures could be found in the fluidized bed for all *** average bubble rising velocity increased with the increasing bubble equivalent *** bubble lateral movement,the smaller bubbles might be more susceptible,and superficial gas velocity had a little influence on the absolute lateral velocity of *** simulated results presented a valuable and novel approach for studying bubble dynamics *** comprehensive understanding of bubble dynamics behaviors in quasi-2. gas-solid fluidized beds would provide support in the design,operation,and optimization of gas-solid

关键词： Bubble dynamics properties CPFD simulation Quasi-2. gas-solid fluidized bed Digital image analysis

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Effect of exogenous additives on heavy metal passivation and nitrogen retention in pig manure composting

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Frontiers of Agricultural Science and Engineering 2024年第3期11卷 468-484页

作者： Ziqi WANG guotao SUN Jiamin WANG Gongshe YANG College of Animal Science and Technology Northwest A&F UniversityYangling 712100China College of Horticulture Northwest A&F UniversityYangling 712100China

The widespread use of feed additives in intensive and large-scale pig farming has resulted in high levels of heavy metals in pig *** long-term application of organic fertilizers containing high levels of heavy metals leads to the accumulation of heavy metals in the soil,which not only causes heavy metal pollution in the soil,and also affect food safety and endanger human *** is an economical and effective technical measures to achieve environmentally-sustainable treatment of pig manure and is a practical method to reduce the problem of heavy metals and to improve the resource value of pig *** composting process is accompanied by high temperatures and the production and emission of gases,and also lead to changes in the nitrogen content of the compost and provide opportunity for heavy metal passivation *** paper summarizes the forms and types of heavy metals present in pig manure and reviews the progress of research as well as the techniques and problems of in the composting process,and provides recommendations for research on heavy metal passivation and nitrogen retention in pig manure composting.

关键词： Additives composting heavy metals passivation nitrogen retention pig manure

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A statistical study on the correlation between sporadic Ca+ layer and Es in Beijing（40.5°N, 116°E）

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Earth and Planetary Physics 2024年第5期8卷 753-761页

作者： YuChang Xun ZhiShan Chen LiFang Du HaoRan Zheng Jing Jiao ZeLong Wang ShaoHua Gong guotao Yang College of Physics College of Electronic Information and Optical Engineering Taiyuan University of Technology State Key Laboratory of Space Weather National Space Science Center Chinese Academy of Sciences School of Science Jiangsu University of Science and Technology School of Physics and Electronics Engineering Hainan Normal University

From April 2.2. to June 2.2., a Ca+lidar with dual-wavelength and narrow-band emitting lasers utilizing all-solid-state technology was employed to conduct observations in Beijing（40.41°N, 116.01°E） for a total duration of 1797.79 hours over 2.0 nights. A total of 2.6 sporadic Ca+layers were observed, with heights ranging from 88 to 12. km and densities varying from 5.33 to 2.00 cm-3. We simultaneously observed the ionosonde, located 2. km from the lidar, and found a correlation of 61.89% between the sporadic Ca+ layer and the sporadic E layer. When the sporadic Ca+layer has a downward phase trend, there is a correlation of 76.84%. By excluding the influence of ionosonde sensitivity, we focus only on calcium ions that have a density exceeding 140 cm-3, which exhibit a correlation of82.2.%. Above 100 km, the correlation significantly increases, reaching approximately 90%. Furthermore, the correlation between the sporadic Ca+ layer and the sporadic E layer is particularly noticeable during the summer season, reaching around 90%. This phenomenon can be attributed to the variations in metal ions that occur during different seasons.

关键词： the Meridian Project lidar sporadic Ca+ layer sporadic E layer

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Genesis of the Nuri Cu-W-Mo Deposit,Tibet,China:Constraints from in situ Trace Elements and Sr Isotopic Analysis of Scheelite

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Acta Geologica Sinica(English Edition) 2024年第1期98卷 117-131页

作者： WANG Yiyun WU Zhishan CHEN Wenqing DU Qing’an TANG Liwei SHI Hongzhao MA guotao ZHANG Zhi LIANG Wei WU Bo MIAO Hengyi Chengdu Center China Geological Survey(Geoscience Innovation Center of Southwest China)Chengdu 610081China The Second Geological Institute of China’s Metallurgical Geology Bureau Fuzhou 351111China

The Nuri deposit is the only Cu-W-Mo polymetallic deposit with large-scale WO3 resources in the eastern section of the Gangdese metallogenic belt,Tibet,***,the genetic type of this deposit has been controversial since its *** on a study of the geological characteristics of the deposit,this study presents mineralization stages,focusing on the oxide stage and the quartz-sulfide stage where scheelite is mainly formed,referred to as Sch-A and Sch-B,*** LA-ICP-MS trace element and Sr isotope analyses,the origin,evolutionary process of the oreforming fluid and genesis of the ore deposit are *** Electron Microscope-Cathodoluminescence(SEMCL)observations reveal that Sch-A consists of three generations,with dark gray homogenous Sch-A1 being replaced by relatively lighter and homogeneous Sch-A2.and Sch-A3,with Sch-A2.displaying a gray CL image color with vague and uneven growth bands and Sch-A3 has a light gray CL image color with hardly any growth *** contrast,Sch-B exhibits a‘core-rim’structure,with the core part(Sch-B1)being dark gray and displaying a uniform growth band,while the rim part(Sch-B2.is light gray and *** normalized distribution pattern of rare earth elements in scheelite and Sr isotope data suggest that the early ore-forming fluid in the Nuri deposit originated from granodiorite porphyry and,later on,some country rock material was mixed in,due to strong water-rock *** the O-H isotope data further indicates that the ore-forming fluid in the Nuri deposit originated from magmatic-hydrothermal sources,with contributions from metamorphic water caused by water-rock interaction during the mineralization process,as well as later meteoric *** intense water-rock interaction likely played a crucial role in the precipitation of scheelite,leading to varying Eu anomalies in different generations of scheelite from the oxide stage to the quartz-sulfide stage,while also causing a

关键词： trace elements in situ Sr isotopes tungsten mineralization Gangdese metallogenic belt Tibet

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Does the Negative Arctic Oscillation Always Favor Winter PM2.5 Diffusion in North China?

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Journal of Meteorological Research 2024年第05期 954-968页

作者： Yueyue YU Zhengfei CUI Haishan CHEN guotao LIU Chunhua SHI Jian RAO Key Laboratory of Meteorological Disaster Ministry of Education (KLME)/Joint International Research Laboratory of Climate and Environment Change (ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD)Nanjing University of Information Science&Technology Department of Geography University College London (UCL)

Previous studies have reported a close relationship between the negative Arctic Oscillation（AO） and the PM2.5(particulate matter with a diameter of2.5μm or less) diffusion in North China in winter. Using the North China regional mean meridional wind at 850 hPa derived from the ERA5（ECMWF Reanalysis version 5） reanalysis data in1979–2.2. as a useful substitute for station observed PM2.5concentration（since the latter is available only since2.14）, our study detected strong/weak northerly events representing the abnormal PM2.5diffusion/accumulation events, and revisited the AO–PM2.5diffusion relationship in North China during 1979–2.2.. The results show that only when the AO was characterized by a 2.month continuously negative/positive phases and with twin peaks respectively before and after the diffusion/accumulation events, would there be higher occurrences of the abnormal PM2.5diffusion/*** second peak of negative AO acted to prolong the strong northerly winds by an average of 2.days. Further analysis reveals that the AO with twin peaks always has a footprint in the stratospheric northern annular mode（NAM） during the abnormal PM2.5events, and the coupling between the stratosphere and troposphere plays a critical role in the second peak of AO. Vertical propagation of baroclinically amplifying waves leads to changes in isentropic meridional mass fluxes in the stratosphere following the changes in the troposphere. The stronger/weaker poleward mass fluxes increase/decrease the polar mass in the stratosphere, which dominates the total column air mass changes and leads to the second peak of AO. Considering the subseasonal predictability of the stratospheric NAM based on existing evidence, particular attention should be paid to these AO-related abnormal PM2.5diffusion and accumulation events in North China because they might be more predictable at a longer lead time.

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多措并举标本兼治有力有效做好基督教工作

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中国宗教 2024年第5期 33-34页

作者： 1.中共山东省委统战部 2.山东省民宗委中共山东省委统战部山东省民宗委

近年来,山东省结合实际,采取有力举措,扎实做好基督教工作,有效推进基督教中国化山东实践,全省基督教领域呈现出和谐稳定的良好局面。一、严格落实宗教工作责任制,着力构建齐抓共管的宗教事务管理格局山东严格落实各级各部门宗教工作责... 详细信息

近年来,山东省结合实际,采取有力举措,扎实做好基督教工作,有效推进基督教中国化山东实践,全省基督教领域呈现出和谐稳定的良好局面。一、严格落实宗教工作责任制,着力构建齐抓共管的宗教事务管理格局山东严格落实各级各部门宗教工作责任制,通过强化组织保障“小切口”,推动基层宗教事务管理“大文章”。一是压实主体责任。将宗教工作纳入各级党委重要议事日程,构建起各级党委齐抓共管的工作体制。

关键词：基督教中国化齐抓共管宗教事务管理主体责任工作责任制和谐稳定严格落实标本兼治

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礼器、礼与中国早期社会治理

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河南社会科学 2024年第8期32卷 118-124页

作者：贾国涛河南财经政法大学河南郑州450016

中国早期社会的礼器属于一种威望物品,不仅具有表征等级贵贱、参与社会层级划分、社会秩序建构的功能,而且可以规范社会成员的行为、地位和特权,成为一种权力符号。在史前社会中,权贵阶层主导这些权力物化象征符号的生产与再生产,控制... 详细信息

中国早期社会的礼器属于一种威望物品,不仅具有表征等级贵贱、参与社会层级划分、社会秩序建构的功能,而且可以规范社会成员的行为、地位和特权,成为一种权力符号。在史前社会中,权贵阶层主导这些权力物化象征符号的生产与再生产,控制了礼器制作的资料和技术,利用礼器来建构礼仪形态与意识形态,从而实现政治社会秩序的生产与再生产。青铜时代的礼器是礼的载体,其社会功能是用以“明贵贱,辨等列”,使各等级的人各守其位、不得越轨,从而维系等级秩序。青铜饮食礼器,体现出三代社会对饮食礼仪的高度重视。饮食礼在协调社会关系、敦睦人伦、促进社会成员团结等方面发挥了重要的社会治理作用。

关键词：礼器社会整合社会治理

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