检索结果-南通市图书馆

建设工程全生命周期虚拟仿真实训基地教学探索与实践

在线全文

学校读者我要写书评

暂无评论

办公自动化 2024年第17期29卷 30-32页

作者：张广进张福栋山东城市建设职业学院济南250103

随着建设工程行业的快速发展,培养高素质的建筑工程人才成为迫切的需求,传统教学模式已不能满足学生对实践能力的要求,因此,建设工程全生命周期虚拟仿真实训基地应运而生。文章通过对已有的相关研究进行综述,分析建设工程全生命周期虚... 详细信息

随着建设工程行业的快速发展,培养高素质的建筑工程人才成为迫切的需求,传统教学模式已不能满足学生对实践能力的要求,因此,建设工程全生命周期虚拟仿真实训基地应运而生。文章通过对已有的相关研究进行综述,分析建设工程全生命周期虚拟仿真实训基地的特点和优势,介绍该实训基地在教学中的应用与实践情况,并对其效果进行评估。然而,该实训基地在应用中还存在各种问题,未来研究可进一步探索如何提高实训基地的教学效果,以及如何解决在实训基地应用中的问题。

关键词：建设工程全生命周期虚拟仿真实训基地教学

在线全文

学校读者我要写书评

暂无评论

儒家“仁民爱物”的生态伦理之当代审视

现代交际 2024年第5期 87-93+123-124页

作者：张富栋李广良黑龙江大学云南师范大学

西方工业文明的发展引发了生态危机，使得生态伦理的研究开始转向东方生态伦理范式，从中国思想文化传统中找寻伦理资源，开展人类对待自然关系的道德革命。异于道家的“道法自然”与佛家的“诸法无相”主题，儒家的“仁民爱物”将仁爱... 详细信息

西方工业文明的发展引发了生态危机，使得生态伦理的研究开始转向东方生态伦理范式，从中国思想文化传统中找寻伦理资源，开展人类对待自然关系的道德革命。异于道家的“道法自然”与佛家的“诸法无相”主题，儒家的“仁民爱物”将仁爱对象由人推及天地万物，并以天人合一为哲学基础，展现了“应时而使之”和“不夭其生，不绝其长”的生态伦理智慧。同时，对“仁民爱物”的生态伦理进行当代审视，不仅有利于探索习近平生态文明思想的中国生态伦理传统渊源，践行新时代的生态文明理念，而且有利于提高人民的生活水平。

关键词：儒家仁民爱物生态伦理天人合一当代审视

An Open Access 4×4 MIMO Testbed and its Validation with an IEEE 802,11n WLAN System

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

China Communications 2014年第A1期11卷 64-71页

作者： SUN Jian LI fudong zhang Haixia JIANG Mingyan YUAN Dongfeng SchoolofInformationScienceandEngineering ShandongUniversityJinan250100ShandongChina

Multiple-Input Multiple-Output （MIMO） and Orthogonal Frequency Division Multiplexing （OFDM） have been widely accepted as key techniques of the current and future wireless communication systems. In this paper, an open access MIMO testbed is presented, on which the researchers can demonstrate and evaluate their baseband algorithms over the real wireless channel, without knowing much details about the hardware of the testbed. Moreover, an IEEE 802.11n transmission scheme is implemented as a design example to validate this testbed as well as demonstrate the transmission characteristics of MIMO-OFDM.

关键词： open access testbed MIMO MIMO-OFDM IEEE 802.1 ln receiver algorithms

Sodium bismuth titanate-based perovskite ceramics with high energy storage efficiency and discharge performance

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

Journal of Materiomics 2022年第5期8卷 1077-1085页

作者： Jiahui Wang fudong zhang Zhanhui Peng Xiaolian Chao Zupei Yang Key Laboratory for Macromolecular Science of Shaanxi Province Shaanxi Key Laboratory for Advanced Energy DevicesSchool of Materials Science and EngineeringShaanxi Normal UniversityXi'an710062ShaanxiChina

Designing dielectric materials with the tremendous energy storage density is fundamentally important for developing pulse power *** effective approach was proposed to favorably modify the dielectric energy storage properties(ESP)of Bi_(0.5)Na_(0.5)TiO_(3) ceramics using CaTiO_(3) *** dielectric breakdown strength was effectively enhanced,and simultaneously the relaxor behavior was optimized to lower the remnant polarization,which is resulted from the decreased grains size with the introduction of Ca^(2+)***,at a CaTiO_(3) doping level of 0.2,a 0.8Bi_(0.5)Na_(0.5)TiO_(3)-0.2CaTiO_(3)(0.8BNT-0.2CT)ceramic obtained both high energy storage density(Wtotal)of~1.38 J/cm^(3) together with excellent efficiency(h)of~91.3%.Furthermore,an ultrafast discharge response speed(t0:9)~94 ns was achieved in 0.8BNT-0.2CT ceramic,as well as tremendous current density(C_(D)~1520 A/cm2)and power density(P_(D)~115 MW/cm^(3)).This study not only revealed the superior ESP mechanism as regards Bi_(0.5)Na_(0.5)TiO_(3) based ceramics but also provided candidate materials in pulse power capacitor devices.

关键词： Bi_(0.5)Na_(0.5)TiO_(3)ceramics Grain size Relaxor behavior High energy storage density Energy storage efficiency Ultrafast charge-discharge

Mechanism investigation of PtPd decorated Zn_(0.5)Cd_(0.5)S nanorods with efficient photocatalytic hydrogen production combining with kinetics and thermodynamics

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

Chinese Journal of Catalysis 2021年第10期42卷 1677-1688页

作者： Linhe zhang fudong zhang Huaqing Xue Jianfeng Gao Yong Peng Weiyu Song Lei Ge State Key Laboratory of Heavy Oil Processing College of New Energy and MaterialsChina University of Petroleum BeijingBeijing 102249China Department of New Energy Research Institute of Petroleum Exploration&DevelopmentPetroChinaBeijing 100083China Department of Applied Chemistry College of ScienceChina University of Petroleum BeijingBeijing 102249China

Different components of PtPd bimetallic cocatalysts modified Zn_(0.5)Cd_(0.5)S nanorods have already been designed and prepared in this *** obtained hybrid photocatalysts were tested and characterized by XPS,ICP-OES and UV-Vis spectra,TEM and EDX *** characterizations can prove the formation of PtPd bimetallic alloy particles in hybrid *** visible light illumination,an outstanding hydrogen producing rate of 9.689mmol·g^(-1)·h^(-1) and a high AQY efficiency up to 10.43%at 420 nm are achieved in this *** addition,thermodynamics(DFT calculations)and kinetics(Photoluminescence emission,photocurrent responses,electrochemical impedance spectroscopy and surface photovoltage spectra)investigations illustrate that PtPd bimetallic alloy has similar catalytic thermodynamic properties to Pt,which can greatly boost the charge separation and speed up the charge transfer,and decrease the activation energy of H2 ***,the calculation data suggests that Pt is thermodynamically favorable,while PtPd alloy is kinetically beneficial to H_(2)production,which can be ascribed to the higher activity of PtPd/Zn_(0.5)Cd_(0.5)S than Pt/Zn_(0.5)Cd_(0.5)*** work can propose a fresh perspective for preparing high efficiency hybrid photocatalysts.

关键词： PtPd alloy Zn_(0.5)Cd_(0.5)S nanorods Photocatalytic hydrogen evolution DFT calculation

Asymmetric multilayered MXene-Ag NWs/cellulose nanofiber composite films with antibacterial properties for high-efficiency electromagnetic interference shielding

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2022年第34期129卷 181-189页

作者： fudong zhang Penggang Ren Zhengzheng Guo Jin Wang Zhengyan Chen Ze Zong Jie Hu Yanling Jin Fang Ren The Faculty of Printing Packaging Engineering and Digital Media TechnologyXi’an University of TechnologyXi’an 710048China School of Materials Science and Engineering Xi’an University of TechnologyXi’an 710048China

Flexible, lightweight, robust and versatile properties are essential for the next generation of wearable as well as intelligent electromagnetic interference(EMI) shielding materials. In this work, multilayered films containing cellulose nanofiber(CNF) layers, CNF/MXene layers, and CNF/silver nanowires(CNF/Ag NWs)layers were fabricated by an efficient and easy-to-use vacuum filtration method. Compared with a uniformly mixed film, the resultant layered composite films that loaded with a low MXene and AgNWs content exhibit superior mechanical properties with a tensile strength of 137 MPa, a strain at break of 5.7%, excellent EMI shielding effectiveness(EMI SE) of 61.9 d B, and higher EMI SE/t of 20,653 d B cm^(-1).This is attributed to the high-performance CNF substrate, the highly efficient layered structures, and extensive hydrogen-bonding interactions. In particular, a high degree of ohmic loss of multiple interfaces and polarization relaxation of local defects, as well as an abundance of terminal groups, favor the loss of electromagnetic waves(EMW) within the material. In addition, the prepared multifunctional layered composite films also show good antibacterial properties. As a result, the obtained new kind of flexible layered structure EMI shielding composite films with excellent EMI shielding performance, and mechanical properties present promising application prospects in the fields of EMI shielding and protection for aerospace, portable, and wearable flexible electronic devices.

关键词： MXene AgNWs Laminar structure Electromagnetic interference shielding Flexibility

CNPC's Future Exploration Targets for Giant Gas Fields

在线全文

学校读者我要写书评

暂无评论

China Oil & Gas 2012年第2期19卷 14-20页

作者： Fan Wenke zhang fudong Wang Zongli Yang Dong Yang Shen PetroChina Exploration and Production Company Langfang Brach of PetroChina Petroleum Exploration and Development Research Institute

Potential exploration targets for giant gas fields Based on the distribution of remaining gas resources, the exploration targets selection as well as an analysis of controlling factors for giant gas reservoirs （ proven gas reserve in place 〉 30 bcm）, CNPC determined to focus its exploration in the Sulige area and east part of Erdos Basin, the Xujiahe Formation and reef flat in central Sichuan Basin, Tazhong and Kuche areas in Tarim Basin,

关键词：中国石油天然气集团公司勘探目标大气田塔里木盆地油气资源分布鄂尔多斯盆地天然气储量控制因素

Tuning SMSI to stabilize metallic Pd species:A case study on Pd/TiO_(2) for HCHO oxidation

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第3期35卷 162-166页

作者： Chunying Wang Xiaofeng Liu Jingyi Wang Yaobin Li Shaohua Xie fudong Liu Changbin zhang Yuming Zheng Wenpo Shan Hong He Center for Excellence in Regional Atmospheric Environment Key Laboratory of Urban Pollutant ConversionInstitute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control Ningbo Urban Environment Observation and Research StationChinese Academy of SciencesNingbo 315800China Department of Civil Environmentaland Construction Engineering(CECE)Catalysis Cluster for Renewable Energy and Chemical Transformations(REACT)Nano Science Technology Center(NSTC)University of Central FloridaOrlandoFL 32816USA State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-environmental SciencesChinese Academy of SciencesBeijing 100085China

Pretreatment of the carrier for supported catalysts can effectively improve the strong metal-support interaction(SMSI)and increase the dispersion of precious metals,which are critical to many important catalytic *** this work,we tuned SMSI on Pd/TiO_(2)catalysts through inducing surface defects of TiO_(2)by pretreated with different atmospheres(H_(2)/N_(2),N_(2),O_(2)/N_(2))at the high temperature(800℃).Multiple characterization results illustrated that surface defects anchored Pd species and thus enhanced their *** reduction,Ti^(3+)species formed and transferred onto the metallic Pd species and then induced SMSI,which effectively stabilize Pd species in the metallic *** stronger MSI,the more stability of Pd *** a case,Pd/TiO_(2)–800H_(2),with strongest MSI,displayed the best HCHO oxidation performance at low temperature(10℃).

关键词： Pd/TiO_(2) Surface defects SMSI Formaldehyde Stability of Pd species

基于最小二乘支持向量机的油页岩含油率近红外光谱分析

在线全文

学校读者我要写书评

暂无评论

高等学校化学学报 2016年第10期37卷 1792-1798页

作者：张福东刘杰王智宏吉林大学仪器科学与电气工程学院长春130021

为了提高油页岩含油率近红外光谱分析建模的预测精度和稳定性,开展了基于最小二乘支持向量机(LS-SVM)建模方法的对比研究.采用主成分-马氏距离(PCA-MD)和基于蒙特卡洛采样(MCS)2种方法进行了奇异样本的检测,采用径向基核函数的LS-SVM、... 详细信息

为了提高油页岩含油率近红外光谱分析建模的预测精度和稳定性,开展了基于最小二乘支持向量机(LS-SVM)建模方法的对比研究.采用主成分-马氏距离(PCA-MD)和基于蒙特卡洛采样(MCS)2种方法进行了奇异样本的检测,采用径向基核函数的LS-SVM、偏最小二乘(PLS)和反向传播神经网络(BPANN)3种方法进行建模方法对比.结果表明,对于64个油页岩岩芯样本,与PCA-MD方法相比,采用MCS方法剔除奇异样本后所建PLS模型的预测精度提高了28%.对于MCS方法剔除奇异样本后的58个样品,采用KennardStone法划分了44个样品的校正集和14个样品的预测集,采用2阶导数和标准化预处理方法,建立了100个LS-SVM的校正模型,模型的预测决定系数R2平均值达到0.90以上,高于PLS和BPANN模型的对应值;且R2的变化量(0.02)小于BPANN模型的对应值(0.32).因此,MCS奇异样本检测结合LS-SVM方法可提高油页岩含油率样本建模的精度和稳定性.

关键词：最小二乘支持向量机油页岩含油率近红外光谱分析奇异样本