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基于语料库多文本整合的高中英语教学对发展学生阅读微技能的作用研究

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英语教师 2024年第13期24卷 51-55页

作者：刘佳蕾惠州学院外国语学院广东惠州516000

分析语料库在国内基础教育阶段英语学科教学中的应用现状。运用语料库技术进行“地震灾害”话题阅读文本的多文本整合,并将获得的资源应用于人教版(2019)高中《英语》必修第一册Unit 4 Natural Disasters的英语阅读教学设计及课堂教学,... 详细信息

分析语料库在国内基础教育阶段英语学科教学中的应用现状。运用语料库技术进行“地震灾害”话题阅读文本的多文本整合,并将获得的资源应用于人教版(2019)高中《英语》必修第一册Unit 4 Natural Disasters的英语阅读教学设计及课堂教学,探究语料库辅助下的高中英语阅读教学模式对长期接受传统英语阅读教学的学生发展阅读微技能的作用。调查问卷及访谈结果表明,大部分学生对该模式的阅读教学持肯定态度且认为其对自身英语阅读微技能的发展有一定的促进作用。

关键词：语料库多文本整合高中英语阅读教学阅读微技能

改性复合生物降解地膜的制备及玉米田间应用评价

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山西农业大学学报（自然科学版） 2024年第4期44卷 60-70页

作者：郭波杨振兴何文清张茂林刘家磊山西农业大学资源环境学院山西晋中030801 中国农业科学院农业环境与可持续发展研究所/农业农村部农膜污染防控重点实验室北京100081

[目的]使用生物降解地膜替代传统聚烯烃地膜已成为治理农业白色污染的一项重要技术。主流材料聚对苯二甲酸-己二酸丁二醇酯(PBAT)在制备生物降解地膜时表现出优异的成膜性能,但其水蒸气阻隔性较差,导致降解时间短,限制了其在农用地膜方... 详细信息

[目的]使用生物降解地膜替代传统聚烯烃地膜已成为治理农业白色污染的一项重要技术。主流材料聚对苯二甲酸-己二酸丁二醇酯(PBAT)在制备生物降解地膜时表现出优异的成膜性能,但其水蒸气阻隔性较差,导致降解时间短,限制了其在农用地膜方面的应用。因此,需要进行改性研究以解决PBAT生物降解地膜在拉伸强度、水蒸气阻隔性能和降解期等方面的不足。[方法]本研究将PA6(尼龙6)与PBAT相结合,使用高分子共混法制备PBAT/PA6改性生物降解地膜。该方法制备的生物降解地膜有效地将PBAT与PA6融合在一起,电子显微镜测试表明,混合地膜的表面和横截面均无明显缺陷。于2023年春玉米生长季,在北京顺义地区农田设置不同覆膜处理(PBAT地膜覆盖,PBAT/PA6-10地膜覆盖,PE地膜覆盖,不覆膜处理即CK)的田间对比试验,研究土壤温度、地膜田间降解情况、春玉米产量及其构成因素的变化。[结果]与纯PBAT生物降解地膜相比,本研究所开发的生物降解地膜的拉伸强度提高了约2.7倍,水蒸气阻隔性能提高了79.44%,功能期延长了30 d。玉米作物田间试验表明,改性生物降解地膜更适合农业生产,因其可提高隔热性和保湿性,使玉米产量较纯PBAT地膜提高7.03%,接近传统聚乙烯地膜产量。[结论]将PA6与PBAT材料相结合,开发出了一种新型复合生物降解地膜PBAT/PA6。PA6的加入与PBAT反应形成酰胺键使其整体结构具有稳定性,所制备复合生物降解地膜表面和截面形貌良好,内部无明显孔洞,较PBAT地膜表面更光滑,同时在力学性能和水蒸气阻隔性能上较纯PBAT地膜有显著提升,在田间试验过程中,复合生物降解地膜PBAT/PA6具有优秀的耐降解性能,延长了覆盖时间,并较纯PBAT地膜显著提高春玉米的产量。

关键词： PBAT/PA6生物降解地膜水蒸气阻隔性能机械性能绿色可持续发展 “白色”塑料污染

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穴位贴敷联合生化汤用于无痛人工流产术患者的价值研究

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系统医学 2024年第1期9卷 157-160页

作者：高霞何云云刘嘉蕾南京市六合区中医院妇产科江苏南京211500

目的探究穴位贴敷与生化汤联合应用在无痛人工流产手术患者中的临床治疗效果。方法选取2021年1月—2023年7月于南京市六合区中医院妇产科开展无痛人工流产手术治疗的患者83例为研究对象,按随机数表法分为对照组和观察组,对照组(n=41)常... 详细信息

目的探究穴位贴敷与生化汤联合应用在无痛人工流产手术患者中的临床治疗效果。方法选取2021年1月—2023年7月于南京市六合区中医院妇产科开展无痛人工流产手术治疗的患者83例为研究对象,按随机数表法分为对照组和观察组,对照组(n=41)常规应用生化汤治疗,观察组(n=42)应用穴位贴敷+生化汤治疗,比较两组患者术后疼痛程度、阴道出血量以及持续时间。结果在疼痛评分方面,观察组术后6 h(1.32±0.41)分、术后12 h(1.58±0.61)分以及术后24 h(1.09±0.55)分均低于对照组,差异有统计学意义(t=4.889、3.054、2.541,P均<0.05);观察组术后1 d、2 d和3 d阴道出血量少于对照组,且阴道出血持续时间比对照组更短,差异有统计学意义(P均<0.05)。结论无痛人工流产手术患者经过穴位贴敷和生化汤治疗的效果十分确切,可减轻患者术后疼痛感,改善术后阴道出血量,缩短阴道出血持续时间。

关键词：穴位贴敷生化汤无痛人工流产手术疼痛程度阴道出血量

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1,4-二碘苯对碘铅甲胺钙钛矿层的改性

大连工业大学学报 2024年第1期43卷 56-60页

作者：郑中祥史非刘敬肖李文思刘佳磊大连工业大学纺织与材料工程学院辽宁大连116034

通过向钙钛矿前驱液中加入1,4-二碘苯钝化碘铅甲胺(MAPbI3)钙钛矿层缺陷,降低钙钛矿层的缺陷密度。利用XRD、SEM对钙钛矿薄膜的晶相组成和微观形貌进行表征,以荧光光谱及空间限制电荷电流分析对MAPbI3缺陷密度进行分析。结果表明,前驱... 详细信息

通过向钙钛矿前驱液中加入1,4-二碘苯钝化碘铅甲胺(MAPbI3)钙钛矿层缺陷,降低钙钛矿层的缺陷密度。利用XRD、SEM对钙钛矿薄膜的晶相组成和微观形貌进行表征,以荧光光谱及空间限制电荷电流分析对MAPbI3缺陷密度进行分析。结果表明,前驱液中引入1,4-二碘苯后缺陷密度明显降低。电化学阻抗及J-V曲线测试结果表明,相较于未引入1,4-二碘苯改性的钙钛矿太阳能电池,当钙钛矿层中1,4-二碘苯的摩尔分数为2.1%时,电池的开路电压由0.83 V提升至0.95 V,填充因子由52.5%提升至62.3%,光电转化效率由6.79%提升至8.47%,并且经过多次重复实验后性能保持稳定。

关键词： 1,4-二碘苯缺陷钝化碘铅甲胺

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Overbooking-Enabled Task Scheduling and Resource Allocation in Mobile Edge Computing Environments

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Intelligent Automation & Soft Computing 2023年第7期37卷 1-16页

作者： Jixun Gao Bingyi Hu jialei liu Huaichen Wang Quanzhen Huang Yuanyuan Zhao School of Computer Henan University of EngineeringZhengzhou451191China School of Computer Science and Technology Henan Polytechnic UniversityJiaozuo454000China School of Computer Hubei University of Arts and ScienceXiangyang441053China School of Software Engineering Anyang Normal UniversityAnyang455000China School of Computer and Information Engineering Henan Normal UniversityXinxiang453003China The Publicity Department Zhengzhou University of TechnologyZhengzhou450044China

Mobile Edge Computing(MEC)is proposed to solve the needs of Inter-net of Things(IoT)users for high resource utilization,high reliability and low latency of service ***,the backup virtual machine is idle when its primary virtual machine is running normally,which will waste *** the backup virtual machine under the above circumstances can effectively improve resource ***,these virtual machines are deployed into slots randomly,and then some tasks with cooperative relationship are off-loaded to virtual machines for *** deployment locations have different resource utilization and average service response *** want toﬁnd a balanced solution that minimizes the average service response time of the IoT application while maximizing resource *** this paper,we propose a task scheduler and exploit a Task Deployment Algorithm(TDA)to obtain an optimal virtual machine deployment ***,the simulation results show that the TDA can signiﬁcantly increase the resource utilization of the system,while redu-cing the average service response time of the application by comparing TDA with the other two classical *** experimental results conﬁrm that the perfor-mance of TDA is better than that of other two methods.

关键词： Mobile edge computing overbooking resource utilization service response time task deployment algorithm

Decoupled water electrolysis:Flexible strategy for pure hydrogen production with small voltage inputs

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Journal of Energy Chemistry 2024年第7期94卷 340-356页

作者： Kexin Zhou Jiahui Huang Daili Xiang Aijiao Deng jialei Du Hong liu Institute for Advanced Interdisciplinary Research(iAIR) Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of ShandongUniversity of JinanJinan 250022ShandongChina State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100ShandongChina Zhengzhou Vocational College of Industrial Safety Zhengzhou 451192HenanChina

Hydrogen gas is widely regarded as an ideal green energy carrier and a potential alternative to fossil fuels for coping with the aggravating energy crisis and environmental ***,the vast majority of the world's hydrogen is produced by reforming fossil fuels;however,this hydrogen-making technology is not sustainable or environmentally friendly because ofits high energy consumption and large carbon ***-driven water splitting(2H_(2)0-2H_(2)+0_(2))becomes an extensively studied scheme for sustain-able hydrogen *** water electrolysis requires an input voltage higher than 1.23 V and forms a gas mixture of H_(2)/O_(2),which results in high electricity consumption,potential safety hazards,and harmful reactive oxygen *** virtue of the auxiliary redox mediators(RMs)as the robust H^(+)/e^(-)reservoir,decoupled electrolysis splits water at a much lower potential and evolves O_(2)(H_(2)O+RMS_(ox)-O_(2)+H-RMS_(red))and H_(2)(H-RMS_(red)-H_(2)+RMS_(ox))at separate times,rates,and spaces,thus pro-ducing the puretarget hydrogen gas *** electrolysis has accelerated the development ofwater electrolysis technology for H_(2) ***,itis still lack of a comprehensive and in-depth review in this field based on different types of *** review highlights the basic principles and critical progress of this emerging water electrolysis mode over the past *** representative examples are then dis-played in detail according to the differences in the *** rational choice and design of RMs have also been ***,novel applications of decoupled water splitting are briefly discussed,including the manufacture of valuable chemicals,Cl_(2) production,pollutant degradation,and other half-reactions in artificial ***,thekey characteristics and disadvantages of each type of mediator are sum-marized in *** addition,we present an outlook for future directions in decoupled

关键词： Hydrogen production Conventional water splitting Decoupled water splitting Redox mediators Biomimetics

Cobalt phosphide-based composites as anodes for lithium-ion batteries:From mechanism,preparation to performance

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Particuology 2024年第5期88卷 11-31页

作者： Bo Lan Yishan Wang jialei Lu Dongdong liu Chuncheng Wei Xueqian Zhang Xiaoxiao Huang Guangwu Wen School of Materials Science and Engineering Shandong University of TechnologyZibo255000China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin150001China School of Materials Science and Engineering Harbin Institute of TechnologyWeihai264209China

With the further requirements of electronic products and powered vehicles,the development of a new generation with low-voltage and high-capacity anode materials is crucial for lithium-ion batteries(LIBs).Transition metal phosphides,especially cobalt phosphide(CoP)composites,have become a research hotspot for LIBs anode materials in recent years due to their high theoretical specific capacity,low polarization,and suitable voltage *** review first systematically discusses the lithium storage mechanism and preparation methods of CoP in current ***,the applications of CoP anode materials in LIBs are categorically reviewed,including the composites of CoP with various types of carbon materials and ***,the challenges and future development directions of CoP anode materials are summarized to provide guidance for further improving the lithium storage performance of CoP and its practical applications.

关键词： CoP Composites Preparation Anodes Lithium-ion batteries

SLA-driven container consolidation with usage prediction for green cloud computing

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Frontiers of Computer Science 2020年第1期14卷 42-52页

作者： jialei liu Shangguang WANG Ao ZHOU Jinliang XU Fangchun YANG State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100029China School of Computer and Communication Engineering Zhengzhou University of Light IndustryZhengzhou 450002China

Since service level agreement(SLA)is essentially used to maintain reliable quality of service between cloud providers and clients in cloud environment,there has been a growing effort in reducing power consumption while complying with the SLA by maximizing physical machine(PM)-level utilization and load balancing techniques in infrastructure as a ***,with the recent introduction of container as a service by cloud providers,containers are increasingly popular and will become the major deployment model in the cloud environment and specifically in platform as a ***,reducing power consumption while complying with the SLA at virtual machine(VM)-level becomes *** this context,we exploit a container consolidation scheme with usage prediction to achieve the above *** obtain a reliable characterization of overutilized and underutilized PMs,our scheme jointly exploits the current and predicted CPU utilization based on local history of the considered PMs in the process of the container *** demonstrate our solution through simulations on real *** experimental results show that the container consolidation scheme with usage prediction reduces the power consumption,number of container migrations,and average number of active VMs while complying with the SLA.

关键词： container consolidation service level agreement power consumption usage prediction

工业信息物理系统间隙DoS攻击的自适应事件触发稳定控制

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华南理工大学学报（自然科学版） 2023年第3期51卷 146-156页

作者：孙子文刘加磊江南大学物联网工程学院江苏无锡214122 物联网技术应用教育部工程研究中心江苏无锡214122

针对具有间隙拒绝服务(DoS)攻击的工业信息物理系统(ICPS),研究一种基于观测器的自适应事件触发稳定控制方案。首先构造一个观测器估计系统状态,并采用一种新的自适应事件触发通信方案以节约网络资源;然后通过受频率和持续时间限制的间... 详细信息

针对具有间隙拒绝服务(DoS)攻击的工业信息物理系统(ICPS),研究一种基于观测器的自适应事件触发稳定控制方案。首先构造一个观测器估计系统状态,并采用一种新的自适应事件触发通信方案以节约网络资源;然后通过受频率和持续时间限制的间隙DoS攻击对ICPS的影响建立攻击模型,将受到DoS攻击的ICPS划分为DoS攻击活跃期系统和DoS攻击休眠期系统,并用一些过去成功触发状态重构当前受到攻击的状态,得到基于动态估计器的攻击补偿机制,保证系统在DoS攻击活跃期间的渐进稳定;最后运用分段Lyapunov泛函方法、Jensen’s不等式和Schur补引理,得到系统的稳定条件,并提出自适应事件触发参数、观测器增益和控制器增益的协同设计方案。用间歇反应器系统模拟间隙DoS攻击下基于自适应事件触发的ICPS系统稳定性能。仿真结果表明,自适应事件触发策略和基于动态估计器的补偿机制不仅能够提升系统的稳定性,还能有效降低数据传输的次数,系统在静态事件触发策略下的触发次数大约是在自适应事件触发策略下的4.5倍。

关键词：工业信息物理系统间隙拒绝服务攻击自适应事件触发稳定控制状态重构观测器