检索结果-南通市图书馆

Structural and Ferroelectric Transition in Few-Layer HfO_(2) Films by First Principles Calculations

Chinese Physics Letters 2024年第8期41卷 94-106页

作者： ruiling gao Chao Liu Bowen Shi Yongchang Li Bing Luo Rui Chen Wenbin Ouyang Heng gao Shunbo Hu Yin Wang Dongdong Li Wei Ren Materials Genome Institute State Key Laboratory of Advanced Special SteelShanghai Key Laboratory of High Temperature SuperconductorsInternational Center of Quantum and Molecular StructuresPhysics DepartmentInstitute for the Conservation of Cultural HeritageShanghai UniversityShanghai 200444China Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China Shanghai World Foreign Language Academy Shanghai 200233China Key Laboratory of Silicate Cultural Relics Conservation(Ministry of Education) Shanghai UniversityShanghai 200444China Hongzhiwei Technology(Shanghai)Co. Ltd.Shanghai 201206China Zhangjiang Laboratory Shanghai 201210China

The discovery of ferroelectricity in HfO_(2)-based materials with high dielectric constant has inspired tremendous research interest for next-generation electronic ***,films structure and strain are key factors in exploration of ferroelectricity in fluorite-type oxide HfO_(2) *** we investigate the structures and straininduced ferroelectric transition in different phases of few-layer HfO_(2) films(layer number𝑁=1–5).It is found that HfO_(2) films for all phases are more stable with increasing films *** them,the Pmn2_(1)(110)-oriented film is most stable,and the films of𝑁=4,5 occur with a𝑃21 ferroelectric transition under tensile strain,resulting in polarization about 11.8μC/cm^(2) along in-plane𝑎-*** ferroelectric transition is caused by the strain,which induces the displacement of Hf and O atoms on the surface to non-centrosymmetric positions away from the original paraelectric positions,accompanied by the change of surface Hf–O bond *** importantly,three new stable HfO_(2)2D structures are discovered,together with analyses of computed electronic structures,mechanical,and dielectric *** work provides guidance for theoretical and experimental study of the new structures and strain-tuned ferroelectricity in freestanding HfO_(2) films.

关键词： properties ferroelectric positions

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

ABC分类绩效管理法对医务人员服务质量、心理健康及工作满意度的影响

引用

中国健康心理学杂志 2024年第2期32卷 240-245页

作者：李聪艺高瑞玲河南省南阳市第一人民医院 473000 郑州市第一人民医院

目的:探究基于ABC分类绩效管理法对医务人员的影响。方法:选取2021年3月-2022年3月某院200名在职医务人员,随机分为对照组和观察组,各100例,对照组采用统一医院绩效管理模式,观察组给予基于ABC分类绩效管理法。比较两组服务质量[医疗服... 详细信息

目的:探究基于ABC分类绩效管理法对医务人员的影响。方法:选取2021年3月-2022年3月某院200名在职医务人员,随机分为对照组和观察组,各100例,对照组采用统一医院绩效管理模式,观察组给予基于ABC分类绩效管理法。比较两组服务质量[医疗服务质量量表(CQS)]、心理健康[焦虑自评表(SAS)和抑郁自评表(SDS)]、主观幸福感[主观幸福感量表(GWB)]、工作满意度[明尼苏达工作满意度问卷短式量表(MSQ)]及同情疲劳状况调查[职业生命质量量表中文版(ProQOL)]。结果:干预后与对照组相比,观察组CQS各维度评分明显较高(t=-6.944,-6.920,-7.220;P<0.05),SAS评分和SDS评分明显较低(t=4.894,4.145;P<0.05),GWB各维度评分明显较高(t=-8.548,-4.699,-5.972,-6.778,-9.472,-6.377;P<0.05),MSQ各维度评分明显较高(t=-7.939,-8.925,-7.151;P<0.05),ProQOL各维度评分明显较低(t=10.441,9.667,5.661;P<0.05)。结论:针对医务人员给予基于ABC分类绩效管理法,可明显改善其服务质量,促进心理健康,增加主观幸福感,提升工作满意度,改善同情疲劳状况。

关键词： ABC分类绩效管理法医务人员服务质量心理健康工作满意度

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Research progress of siloxane removal from biogas

引用

International Journal of Agricultural and Biological Engineering 2017年第1期10卷 30-39页

作者： gao ruiling Cheng Shikun Li Zifu School of Energy and Environmental Engineering Beijing Key Laboratory of Resource-oriented Treatment of Industrial PollutantsUniversity of Science and Technology BeijingBeijing 100083China

Siloxanes in biogas are detrimental to engine,turbine,fuel cell,etc.,thus it is necessary to remove siloxanes from biogas before biogas high-value *** present,there are few domestic researches and related reports in view of siloxanes removal from *** paper introduces the property of siloxanes as well as sampling and analysis method,and then presents the research progress of siloxanes removal from *** commercial technologies overseas are adsorption,absorption and cryogenic *** them,adsorption on activated carbon is the most widely used *** technologies,such as biological removal,catalytic processes,membranes,source controlling,*** under exploration and *** last,this paper summarizes the advantages and disadvantages of siloxanes removal technologies as well as the applicability and analyzes the future research trend and *** paper could provide a reference in the field of biogas high-value utilization.

关键词： biogas purification siloxane removal activated carbon adsorption physical and chemical absorption biological removal

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

W2V-ATT-LSTM:一种针对线上线下消费模式的新型顾客满意度预测模型

引用

上海第二工业大学学报 2024年第3期41卷 289-297页

作者：张金高瑞玲谭文安毛文逸侯英琦上海第二工业大学计算机与信息工程学院上海201209

随着移动互联网+的广泛发展,各行各业的线上线下电子商务模式(online to offline,O2O)也应运而生,然而,同质化竞争和数据价值挖掘不足的问题限制了市场的持续向好发展。聚焦于O2O模式下的顾客满意度研究,提出了一种新型的中文文本预测模... 详细信息

随着移动互联网+的广泛发展,各行各业的线上线下电子商务模式(online to offline,O2O)也应运而生,然而,同质化竞争和数据价值挖掘不足的问题限制了市场的持续向好发展。聚焦于O2O模式下的顾客满意度研究,提出了一种新型的中文文本预测模型,命名为W2V-ATT-LSTM。该模型引入Attention机制以提高对重要文本的感知能力,进一步融合W2V和LSTM结构,深度挖掘头部企业真实交易数据进行分析处理、特征选择和模型训练。通过LDA模型进行主题挖掘,深入了解消费者对产品或服务的感受,为企业提供有针对性的改进建议。实验结果显示,W2V-ATT-LSTM模型在公开数据集任务中的准确率(91.4%)、精确率(82.2%)、召回率(81.7%)和F1(81.4%)等指标均优于KNN、贝叶斯、决策树、SVM等传统机器学习算法;在爬虫真实数据集任务中的准确率(94%)、精确率(90%)、召回率(89%)和F1(89%)也优于W2V、LSTM、Bi-LSTM和Bert;在多个公开中文情感分析数据集上的优越性能也表明W2V-ATT-LSTM对于理解和处理自然语言文本具有显著的实际应用价值。在当前竞争激烈的O2O市场,W2V-ATT-LSTM模型能为顾客与商家提供可靠的决策参考,有望帮助企业更好地理解顾客需求,提升服务水平,推动行业良性发展。

关键词： W2V-ATT-LSTM模型 O2O模式顾客满意度深度学习

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Online measurement of alkalinity in anaerobic co-digestion using linear regression method

引用

International Journal of Agricultural and Biological Engineering 2017年第1期10卷 176-183页

作者： Bai Xue Li Zifu Wang Xuemei He Xi Cheng Shikun Bai Xiaofeng gao ruiling School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants Beijing 100083China International Science and Technology Cooperation Base for Environmental and Energy Technology of MOST Beijing 100083China

Alkalinity is a reliable indicator of process stability in anaerobic digestion *** alkalinity(TA)and partial alkalinity(PA)are usually monitored offline as indicators for the status of anaerobic digestion *** order to online monitor TA and PA,the linear regression method was used as estimator to predict alkalinity via software sensor ***,namely,pH,oxidation and reduction potential(ORP),and electrical conductivity(EC),were used as input *** was the most significant parameter with TA and *** linear regression(MLR)models and simple linear regression models with EC were constructed to predict TA and PA in anaerobic co-digestion *** the basis of the evaluation of prediction accuracy,the applications of linear regression models were better for monitoring PA than *** models provided higher accuracy for alkalinity prediction than simple linear regression *** two MLR models based on single-phase anaerobic digestion system were also feasible to predict TA in anaerobic co-digestion ***,the accuracy of these models should be improved by calibrating for broad applications of linear regression method in online alkalinity measurement.

关键词： anaerobic digestion alkalinity online measurement model linear regression

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Two-Dimensional Electron Gas in MoSi_(2)N_(4)/VSi_(2)N_(4)Heterojunction by First Principles Calculation

引用

Chinese Physics Letters 2022年第12期39卷 57-64页

作者： ruiling gao Chao Liu Le Fang Bixia Yao Wei Wu Qiling Xiao Shunbo Hu Yu Liu Heng gao Shixun Cao Guangsheng Song Xiangjian Meng Xiaoshuang Chen Wei Ren Physics Department State Key Laboratory of Advanced Special SteelMaterials Genome InstituteShanghai Key Laboratory of High Temperature SuperconductorsInternational Center of Quantum and Molecular StructuresShanghai UniversityShanghai 200444China Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials(Ministry of Education) Anhui University of TechnologyMaanshan 243002China State Key Laboratory of Surface Physics and Department of Physics Fudan UniversityShanghai 200433China State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083China

Van der Waals(vdW)layered two-dimensional(2D)materials,which may have high carrier mobility,valley polarization,excellent mechanical properties and air stability,have been widely investigated *** explore the possibility of producing a spin-polarized two-dimensional electron gas(2DEG)in the heterojunction composed of insulators MoSi_(2)N_(4)and VSi_(2)N_(4)by using first-principles *** to the charge transfer effect,the 2DEG at the interface of the MoSi_(2)N_(4)/VSi_(2)N_(4)heterojunction is ***,for different kinds of stacking of heterojunctions,lattice strain and electric fields can effectively tune the electronic structures and lead to metal-to-semiconductor *** compressive strain or electric field parallel to c axis,the 2DEG disappears and band gap opening *** the contrary,interlayer electron transfer enforces the system to become metallic under the condition of tensile strain or electric field anti-parallel to c *** changes are mainly attributed to electronic redistribution and orbitals’*** addition,we reveal that MoSi_(2)N_(4)/VSi_(2)N_(4)lateral heterojunctions of armchair and zigzag edges exhibit different electronic properties,such as a large band gap semiconductor and a metallic *** findings provide insights into electronic band engineering of MoSi_(2)N_(4)/VSi_(2)N_(4)heterojunctions and pave the way for future spintronics applications.

关键词： heterojunction polarization metallic

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于AIGC+NLP的电子商务系统——内容生成与智能交互的应用研究

引用

上海第二工业大学学报 2024年第3期41卷 298-306页

作者：侯英琦欧丽滢胡彦博裴垣江张金白云伟俞映洲高瑞玲谭文安上海第二工业大学计算机与信息工程学院上海201209 东华大学计算机科学与技术学院上海201620 上海建桥学院信息技术学院上海201306

为解决传统电子商务系统缺乏个性化服务的问题,提出了基于生成式人工智能(artificial intelligence generated content,AIGC)和自然语言处理(natural language processing,NLP)的设计方案,并进行了关键算法和组件的原型实现。首先,利用... 详细信息

为解决传统电子商务系统缺乏个性化服务的问题,提出了基于生成式人工智能(artificial intelligence generated content,AIGC)和自然语言处理(natural language processing,NLP)的设计方案,并进行了关键算法和组件的原型实现。首先,利用K均值聚类算法(K-means clustering algorithm,K-means)对用户进行聚类,生成用户画像,进一步借助AIGC和NLP技术创建虚拟主播,为不同类型的用户提供个性化服务。在NLP相关研究中提出的生成对抗网络-双向编码器表征法(generative adversarial networks-bidirectional encoder representations from transformers,GAN-BERT)模型可用于实现虚拟主播与用户的智能对话功能,基于开源数据集上的对比测试,该模型效果相比于其他模型有明显提升,双语替换评测(bilingual evaluation understudy,BLEU)值可达到44.25。电子商务系统采用前后端分离的开发模式,前端引入***框架对数据进行双向绑定,后端采用Spring Cloud架构和微服务组件,保证服务的可靠性和稳定性。本系统的设计与实现过程将为其他电商平台的开发和优化提供不错的参考价值,进一步推动电商平台的发展。

关键词：生成式人工智能自然语言处理 K均值聚类算法系统开发

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Defatted Hickory Meal Hydrolysate's Impact on Memory Impairment Induced by D-Galactose in Mice

引用

Food Science and Human Wellness 2024年

作者： Fanping Qin ruiling Liu Qi Kong Hangjun Chen Xiangjun Fang Huizhi Chen Weijie Wu Haiyan gao State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Key Laboratory of Post-Harvest Vegetable Preservation and Processing (Co-construction by Ministry and Province)， Ministry of Agriculture and Rural Affairs，Key Laboratory of Light Industry Fruit and Vegetable Preservation and Processing， Institute of Food Science， Zhejiang Academy of Agricultural Sciences

Defatted hickory meal (DHM)， a by-product of hickory oil production， is a protein source rich in essential amino acids. In this study， the functional properties of DHM hydrolysate (DHMH) were assessed using in vitro and in vivo assays in context to its antioxidant and memory-enhancing effects. To induce memory impairment， D-galactose (D-gal) was administered to mice at a dose of 120 mg/kg body weight per day， and DHMH was orally administered at doses of 300， 600， and 1000 mg/kg body weight per day for 8 weeks. DHMH treatment led to improved memory performance in D-gal-induced memory-impaired mice， as observed in the Morris water maze test. Furthermore， DHMH mitigated the accumulation of amyloid beta 1-42 triggered by D-gal exposure. Notably， high-dose DHMH significantly reduced the elevation of pro-inflammatory markers， including tumor necrosis factor alpha， interleukin 1β， and interleukin 6. Additionally， DHMH prevented the decline in total superoxide dismutase activity， glutathione peroxidase activity， and glutathione levels， while reducing malondialdehyde content in D-gal-induced mice， indicative of its antioxidant properties. Moreover， DHMH treatment effectively prevented histological alterations in neurons within the hippocampal CA1 area induced by D-gal. Collectively， our findings suggest that DHMH may counteract memory dysfunctions resulting from oxidative stress injury in the brain， positioning it as a potential candidate for use as a functional food.

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Record-high efficiency perovskite LEDs achieved by accelerating radiative recombination

引用

Science China Materials 2024年第9期67卷 3039-3040页

作者： Feng gao Department of Physics Chemistry and BiologyLinköping UniversityLinköping58183Sweden

Light-emitting diodes(LEDs)have revolutionized the lighting and displays due to their superior energy *** increasing demand for more efficient and brighter thin-film LEDs in flat-panel displays and solid-state lighting applications has driven extensive research into perovskite materials,which show great promise for high brightness and efficiency.

关键词： lighting radiative high

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Stress tensor determination by modified hydraulic tests on pre-existing fractures:Method and stress constraints

引用

Journal of Rock Mechanics and Geotechnical Engineering 2024年第5期16卷 1637-1648页

作者： Guiyun gao Chenghu Wang Ke gao National Institute of Natural Hazards Ministry of Emergency Management of ChinaBeijing100085China Beijing Engineering Research Center of Earthquake Observation Beijing100085China Key Laboratory of Compound and Chained Natural Hazards Dynamics Ministry of Emergency Management of ChinaBeijing100085China Department of Earth and Space Sciences Southern University of Science and TechnologyShenzhen518055China

The hydraulic testing of pre-existing fractures(HTPF)is one of the most promising in situ stress measurement methods,particularly for three-dimensional stress tensor ***,the stress tensor determination based on the HTPF method requires at least six tests or a minimum of 14-15 tests(under different conditions)for reliable *** this study,we modified the HTPF method by considering the shear stress on each pre-existing fracture,which increased the number of equations for the stress tensor determination and decreased the number of tests *** shear stresses were attributed to different fractures by random sampling;therefore,the stress tensors were obtained by searching for the optimal solution using the least squares criterion based on the Monte Carlo ***,we constrained the stress tensor based on the tensile strength criterion,compressive strength criterion,and vertical stress *** inverted stress tensors were presented and analyzed based on the tensorial nature of the stress using the Euclidean mean stress *** stress-measurement campaigns in Weifang(Shandong Province,China)and Mercantour road tunnel(France)were implemented to highlight the validity and efficiency of the modified HTPF(M-HTPF)*** results showed that the M-HTPF method can be applied for stress tensor inversion using only three to four tests on pre-existing fractures,neglecting the stress *** inversion results were confined to relatively small distribution dispersions and were significantly reliable and stable due to the shear stresses on the fractures and the stress constraints *** M-HTPF method is highly feasible and efficient for complete stress tensor determination in a single borehole.

关键词： Stress tensor Hydraulic tests on pre-existing fractures Mean stress Stress constraint Hydraulic fracturing

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：