资源类型

期刊论文 1352

会议视频 90

会议信息 5

会议专题 1

年份

2024 2

2023 126

2022 168

2021 153

2020 96

2019 82

2018 96

2017 59

2016 61

2015 78

2014 52

2013 52

2012 44

2011 62

2010 54

2009 55

2008 28

2007 31

2006 21

2005 15

展开 ︾

关键词

能源 52

可持续发展 13

核能 11

可再生能源 10

节能 10

碳中和 9

建筑科学 8

钢结构 8

能源安全 6

2035 4

工程管理 4

新能源 4

氢能 4

环境 4

能源战略 4

能源结构 4

能源转型 4

能源革命 4

节能减排 4

展开 ︾

检索范围：

排序： 展示方式：

Efficient photoelectrochemical oxidation of rhodamine B on metal electrodes without photocatalyst or supporting electrolyte

Xuejiao Wang, Xiang Feng, Jing Shang

《环境科学与工程前沿（英文）》 2018年 第12卷 第6期 doi: 10.1007/s11783-018-1061-8

摘要：

•The efficient PEC degradation of RhB is realized using no photocatalyst.

•The efficient PEC degradation of RhB features the low salinity.

•The PEC degradation of RhB takes place on the anode and cathode simultaneously.

关键词： Energy relay structure     Energy saving     Photocatalyst-free and low-salinity degradation     Photoelectrochemical cell    

HTML PDF 收藏

Joint cooperative beamforming and artificial noise design for secure AF relay networks with energy-harvesting Article

He-hao NIU, Bang-ning ZHANG, Dao-xing GUO, Yu-zhen HUANG, Ming-yue LU

《信息与电子工程前沿（英文）》 2017年 第18卷 第6期   页码 850-862 doi: 10.1631/FITEE.1601832

摘要： 研究AF中继网络同时信息与能量传输的物理层安全技术，提出利用鲁棒协作波束成形和人工噪声提升系统的安全和能量传输性能。将能量接收机视作潜在窃听者，在中继功率及能量采集门限约束下，提出最大化源节点与合法接收机之间的最差安全速率优化问题。为求解该非凸问题，提出了双层优化方法，其中包括一维搜索与半正定松弛。证明了该半正定松弛为紧松弛。仿真结果表明本文算法比其他方案有更好的安全速率性能。

关键词： 同时无线信息与能量传输；物理层安全；中继网络；协作波束成形；人工噪声    

HTML PDF 收藏

Efficient detection methods for amplify-and-forward relay-aided device-to-device systems with full-rate Article

Kang-li ZHANG, Cong ZHANG, Fang-lin GU, Jian WANG

《信息与电子工程前沿（英文）》 2017年 第18卷 第6期   页码 788-795 doi: 10.1631/FITEE.1700018

摘要： 中继辅助设备到设备通信是下一代蜂窝网络中一项极具潜力的技术。研究了适用于配置多天线的放大转发中继辅助设备到设备通信系统的不同传输方案。为了解决基于全速率空时块码传输方案的传统最大似然检测算法复杂度高的问题，文中提出两种低复杂度检测方法，分别为采用最大似然合并算法的检测方法和采用联合条件最大似然检测器的检测方法。特别是，所提的基于联合条件最大似然检测器的检测方法，能够通过牺牲一定的存储空间换取较好的并行处理能力。仿真结果表明：针对采用全速率空时块码传输方案提出的两种检测方法，能够获得与传统最大似然检测方法近乎相同的误符号率，但所提检测方法复杂度更低；同时，采用基于全速率空时块码的传输方案比复用传输方案具有更优的误码性能。仿真结果还进一步验证了对所提检测方法的分集增益分析。

关键词： 设备到设备通信；中继；检测；全速率空时块码    

HTML PDF 收藏

Impact of energy structure adjustment on air quality: a case study in Beijing, China

Bin ZHAO, Jiayu XU, Jiming HAO

《环境科学与工程前沿（英文）》 2011年 第5卷 第3期   页码 378-390 doi: 10.1007/s11783-011-0357-8

摘要： Energy consumption is a major cause of air pollution in Beijing, and the adjustment of the energy structure is of strategic importance to the reduction of carbon intensity and the improvement of air quality. In this paper, we explored the future trend of energy structure adjustment in Beijing till 2020, designed five energy scenarios focusing on the fuel substitution in power plants and heating sectors, established emission inventories, and utilized the Mesoscale Modeling System Generation 5 (MM5) and the Models-3/Community Multiscale Air Quality Model (CMAQ) to evaluate the impact of these measures on air quality. By implementing this systematic energy structure adjustment, the emissions of PM , PM , SO , NO , and non-methane volatile organic compounds (NMVOCs) will decrease distinctly by 34.0%, 53.2%, 78.3%, 47.0%, and 30.6% respectively in the most coal-intensive scenario of 2020 compared with 2005. Correspondingly, MM5-Models-3/CMAQ simulations indicate significant reduction in the concentrations of major pollutants, implying that energy structure adjustment can play an important role in improving Beijing’s air quality. By fuel substitution for power plants and heating boilers, PM , PM , SO , NO , and NMVOCs will be reduced further, but slightly by 1.7%, 4.5%, 11.4%, 13.5%, and 8.8% respectively in the least coal-intensive scenario. The air quality impacts of different scenarios in 2020 resemble each other, indicating that the potential of air quality improvement due to structure adjustment in power plants and heating sectors is limited. However, the CO emission is 10.0% lower in the least coal-intensive scenario than in the most coal-intensive one, contributing to Beijing’s ambition to build a low carbon city. Except for energy structure adjustment, it is necessary to take further measures to ensure the attainment of air quality standards.

关键词： Beijing     energy structure adjustment     air quality     Community Multiscale Air Quality Model (CMAQ)     scenario    

HTML PDF 收藏

Correlation between carbon emissions and energy structure –Reliability analysis of low carbon target

Ben HUA

《能源前沿（英文）》 2011年 第5卷 第2期   页码 214-220 doi: 10.1007/s11708-010-0133-7

摘要： The influence of energy intensity on carbon intensity depends upon the fraction of energy mixes with high carbon emissions in the total energy mixes . The correlation of with a variety of primary energy mix fractions and technology advances such as CCS and CCHP is analyzed and deduced. Taking the long-term carbon reduction target in 2050 settled upon by the Copenhagen Agreement and the mid-term target suggested by the “450 Scenes Program” of the International Energy Agency (IEA) as constraints, the new pattern of the energy transition of the world in 2020, 2030, and 2050 are estimated and figured out. The peak value of energy consumption will lag behind the peak value of carbon emissions; the world energy structure shifting point will be in 2020–2025. Estimates show that China’s mid-2020 and long-term targets of energy-saving and emission reduction announced by the Chinese government might be achieved.

关键词： correlation     carbon emissions     energy consumption     high carbon emissions energy mix     target of emission reduction     reliability    

HTML PDF 收藏

Determination of energy dissipation of a spider silk structure under impulsive loading

Jorge ALENCASTRE,Carlos MAGO,Richard RIVERA

《机械工程前沿（英文）》 2015年 第10卷 第3期   页码 306-310 doi: 10.1007/s11465-015-0349-7

摘要：

Various researches and studies have demonstrated that spider silk is much stronger and more deformable than a steel string of the same diameter from a mechanical approach. These excellent properties have caused many scientific disciplines to get involved, such as bio-mechanics, bio-materials and bio-mimetics, in order to create a material of similar properties and characteristics. It should be noted that the researches and studies have been oriented mainly as a quasi-static model. For this research, the analysis has taken a dynamic approach and determined the dissipation energy of a structure which is made of spider silk “Dragline” and produced by the Argiope-Argentata spider, through an analytical-experimental way, when being subjected to impulsive loading. Both experimental and analytical results, the latter obtained by using adjusted models, have given high levels of dissipation energy during the first cycle of vibration, which are consistent with the values suggested by other authors.

关键词： dissipation energy     impact     visco-elastic material     spider silk    

HTML PDF 收藏

Analysis and experiment on structure parameters for an energy reclaiming suspension

CHEN Shi‘an, HE Ren, LU Senlin

《机械工程前沿（英文）》 2008年 第3卷 第2期   页码 200-204 doi: 10.1007/s11465-008-0024-3

摘要： An energy reclaiming suspension is proposed to reclaim vibration energy in the suspension. To study its riding performance and reclaiming energy performance, a hydraulic energy reclaiming device prototype is produced and its mechanical behavior is analyzed and tested according to the hydraulic theory. Theoretical analysis shows that mechanical behavior of the energy reclaiming device is embodied by a viscidity damping parameter and an analogous coulomb damping parameter determined by its structure; their expressions are obtained. Experimental investigation shows that theoretical predictions agree with test results.

关键词： Experimental investigation     analogous coulomb     hydraulic     performance     suspension    

HTML PDF 收藏

New method for computer numerical control machine tool calibration: Relay method

LIU Huanlao, SHI Hanming, LI Bin, ZHOU Huichen

《机械工程前沿（英文）》 2007年 第2卷 第3期   页码 301-304 doi: 10.1007/s11465-007-0053-3

摘要： Relay measurement method, which uses the kilogram-meter (KGM) measurement system to identify volumetric errors on the planes of computer numerical control (CNC) machine tools, is verified through experimental tests. During the process, all position errors on the entire plane table are measured by the equipment, which is limited to a small field. All errors are obtained first by measuring the error of the basic position near the original point. On the basis of that positional error, the positional errors far away from the original point are measured. Using this analogy, the error information on the positional points on the entire plane can be obtained. The process outlined above is called the relay method. Test results indicate that the accuracy and repeatability are high, and the method can be used to calibrate geometric errors on the plane of CNC machine tools after backlash errors have been well compensated.

关键词： positional     volumetric     information     process     repeatability    

HTML PDF 收藏

Adaptive robust beamformer formulti-pair two-way relay networks with imperfect channel state information

Jin WANG,Feng SHU,Ri-qing CHEN,Yu-di CUI,Yu CHEN,Jun LI

《信息与电子工程前沿（英文）》 2016年 第17卷 第3期   页码 265-280 doi: 10.1631/FITEE.1500134

摘要： In wideband multi-pair two-way relay networks, the performance of beamforming at a relay station (RS) is intimately related to the accuracy of the channel state information (CSI) available. The accuracy of CSI is determined by Doppler spread, delay between beamforming and channel estimation, and density of pilot symbols, including transmit power of pilot symbols. The coefficient of the Gaussian-Markov CSI error model is modeled as a function of CSI delay, Doppler spread, and signal-to-noise ratio, and can be estimated in real time. In accordance with the real-time estimated coefficients of the error model, an adaptive robust maximum signal-to-interferenceand- noise ratio (Max-SINR) plus maximum signal-to-leakage-and-noise ratio (Max-SLNR) beamformer at an RS is proposed to track the variation of the CSI error. From simulation results and analysis, it is shown that: compared to existing non-adaptive beamformers, the proposed adaptive beamformer is more robust and performs much better in the sense of bit error rate (BER); with increase in the density of transmit pilot symbols, its BER and sum-rate performances tend to those of the beamformer of Max-SINR plus Max-SLNR with ideal CSI.

关键词： Multi-pair two-way relay     Adaptive robust beamformer     Channel state information (CSI)     Maximum signal-to-interference-and-noise ratio (Max-SINR)     Maximum signal-to-leakage-and-noise ratio (Max-SLNR)    

HTML PDF 收藏

Damage detection in beam-like structures using static shear energy redistribution

《结构与土木工程前沿（英文）》 2022年 第16卷 第12期   页码 1552-1564 doi: 10.1007/s11709-022-0903-4

摘要： In this study, a static shear energy algorithm is presented for the damage assessment of beam-like structures. According to the energy release principle, the strain energy of a damaged element suddenly changes when structural damage occurs. Therefore, the change in the static shear energy is employed to determine the damage locations in beam-like structures. The static shear energy is derived from the spectral factorization of the elementary stiffness matrix and structural deflection variation. The advantage of using shear energy as opposed to total energy is that only a few deflection data points of the beam structure are required during the process of damage identification. Another advantage of the proposed approach is that damage detection can be performed without establishing a structural finite-element model in advance. The proposed technique is first validated using a numerical example with single, multiple, and adjacent damage scenarios. A channel steel beam and rectangular concrete beam are employed as experimental cases to further verify the proposed approach. The results of the simulation and experiment examples indicate that the proposed algorithm provides a simple and effective method for defect localization in beam-like structures.

关键词： damage detection     beam structure     strain energy     static displacement variation     energy damage index    

HTML PDF 收藏

Influence of fluid-structure interaction on vortex induced vibration and lock-in phenomena in long span

Nazim Abdul NARIMAN

《结构与土木工程前沿（英文）》 2016年 第10卷 第4期   页码 363-384 doi: 10.1007/s11709-016-0353-y

摘要： In this paper, deck models of a cable stayed bridge are generated in ABAQUS-finite element program once using only CFD model (one-way fluid-structure interaction) and another by using both the CFD model and the CSD model together (two-way fluid-structure interaction) in a co-simulation. Shedding frequencies for the associated wind velocities in the lock-in region are calculated in both approaches. The results are validated with Simiu and Scanlan results. The lift and drag coefficients are determined for the two approaches and the latter results are validated with the flat plate theory results by Munson and coauthors. A decrease in the critical wind velocity and the shedding frequencies considering two-way approach was determined compared to those obtained in the one-way approach. The results of the lift and drag forces in the two-way approach showed appreciable decrease in their values. It was concluded that the two-way approach predicts earlier vortex induced vibration for lower critical wind velocities and lock-in phenomena will appear at lower natural frequencies of the long span bridges. This helps the designers to efficiently plan and consider for the design and safety of the long span bridge against this type of vibration.

关键词： vortex-induced vibration     fluid-structure interaction     Strouhal number     lock-in     kinetic energy    

HTML PDF 收藏

无线传感器网络中基于尺度的协同中继跨层QoS路由算法

徐楠,孙亚民,于继明,王华

《中国工程科学》 2011年 第13卷 第3期   页码 45-49

摘要：

提出了一种基于尺度的协同中继自主转发跨层QoS路由算法(MCRICQR)。节点根据能量、信道、拥塞以及与汇点的距离等综合因素形成一个选择度量，度量最大的节点根据自己所处状态自主选择直接转发、中继转发以及跃进转发数据包。仿真结果表明，该算法能根据网络状况及时转发数据，提高网络可靠性，对网络负载进行均衡，提高网络吞吐量和能量效率，从而延长网络寿命，保障了无线传感器网络的QoS需求。

关键词： 服务质量     跨层设计     协同中继     自主转发     无线传感器网络    

HTML PDF 收藏

Review of the crushing response of collapsible tubular structures

Vivek PATEL, Gaurav TIWARI, Ravikumar DUMPALA

《机械工程前沿（英文）》 2020年 第15卷 第3期   页码 438-474 doi: 10.1007/s11465-019-0579-1

摘要： Studies on determining and analyzing the crushing response of tubular structures are of significant interest, primarily due to their relation to safety. Several aspects of tubular structures, such as geometry, material, configuration, and hybrid structure, have been used as criteria for evaluation. In this review, a comprehensive analysis of the important findings of extensive research on understanding the crushing response of thin-walled tubular structures is presented. Advancements in thin-walled structures, including multi-cell tube, honeycomb and foam-filled, multi wall, and functionally graded thickness tubes, are also discussed, focusing on their energy absorption ability. An extensive review of experimentation and numerical analysis used to extract the deformation behavior of materials, such as aluminum and steel, against static and dynamic loadings are also provided. Several tube shapes, such as tubes of uniform and nonuniform (tapered) cross sections of circular, square, and rectangular shapes, have been used in different studies to identify their efficacy. Apart from geometric and loading parameters, the effects of fabrication process, heat treatment, and triggering mechanism on initiating plastic deformation, such as cutouts and grooves, on the surface of tubular structures are discussed.

关键词： monolithic structure     crashworthiness     energy absorber     static and dynamic loadings     multicellular tube structure     filled tube    

HTML PDF 收藏

能源4.0：重塑经济结构——互联网技术与智慧能源

顾为东

《中国工程科学》 2015年 第17卷 第3期   页码 4-9

摘要：

本文根据几十年系统研究，提出与工业4.0相适应的能源4.0概念，其特征是通过互联网与电网，将太阳能、风能、化石能源、核能等供电侧与电解铝、氯碱、大规模海水淡化、制氢、煤炭清洁化、煤化工、冶金等高耗能产业用电侧，构建一个有机的高效、低成本、可持续、可调控的网络，即构建我国产业能源互联网体系，重塑经济结构，实现经济优化升级、成为实现经济新常态的重要抓手。

关键词： 能源4.0；产业能源互联网；高耗能产业；调峰    

HTML PDF 收藏

能源革命与中国能源经济安全保障探析

黄维和,梅应丹,吴丽丽,梁赟玲,赵晓丽

《中国工程科学》 2021年 第23卷 第1期   页码 124-132 doi: 10.15302/J-SSCAE-2021.01.018

摘要：

能源是经济运行的血脉，能源革命伴生的能源结构调整对宏观经济运行所产生的影响是值得关注的问题。本文基于计量模型和统计分析方法，定量研究了能源结构变化影响能源价格对宏观经济运行产生的效应。分析结果表明，天然气消费占全部能源消费比例每增加 1%，能源价格将增加 0.82%；煤炭消费占比每增加 1%，能源价格将减少 0.24%；技术取得进步、能源投资增长、市场化程度提高、能源效率提升有利于降低能源价格；整体上，中国能源革命不会对能源经济安全产生较大影响，能源价格上升幅度仍处于国民经济和能源消费可承受的范围内。研究针对性提出了中国能源革命进程中更好保障能源经济安全的建议：注重技术进步，深化能源市场改革，提高能源市场竞争程度，这些措施有利于减缓能源革命对能源价格的冲击作用。

关键词： 能源革命     能源经济安全     能源结构     能源价格     国民经济    

HTML PDF 收藏

标题 作者 时间 类型 操作

Efficient photoelectrochemical oxidation of rhodamine B on metal electrodes without photocatalyst or supporting electrolyte

Xuejiao Wang, Xiang Feng, Jing Shang

期刊论文

Joint cooperative beamforming and artificial noise design for secure AF relay networks with energy-harvesting

He-hao NIU, Bang-ning ZHANG, Dao-xing GUO, Yu-zhen HUANG, Ming-yue LU

期刊论文

Efficient detection methods for amplify-and-forward relay-aided device-to-device systems with full-rate

Kang-li ZHANG, Cong ZHANG, Fang-lin GU, Jian WANG

期刊论文

Impact of energy structure adjustment on air quality: a case study in Beijing, China

Bin ZHAO, Jiayu XU, Jiming HAO

期刊论文

Correlation between carbon emissions and energy structure –Reliability analysis of low carbon target

Ben HUA

期刊论文

Determination of energy dissipation of a spider silk structure under impulsive loading

Jorge ALENCASTRE,Carlos MAGO,Richard RIVERA

期刊论文

Analysis and experiment on structure parameters for an energy reclaiming suspension

CHEN Shi‘an, HE Ren, LU Senlin

期刊论文

New method for computer numerical control machine tool calibration: Relay method

LIU Huanlao, SHI Hanming, LI Bin, ZHOU Huichen

期刊论文

Adaptive robust beamformer formulti-pair two-way relay networks with imperfect channel state information

Jin WANG,Feng SHU,Ri-qing CHEN,Yu-di CUI,Yu CHEN,Jun LI

期刊论文

Damage detection in beam-like structures using static shear energy redistribution

期刊论文

Influence of fluid-structure interaction on vortex induced vibration and lock-in phenomena in long span

Nazim Abdul NARIMAN

期刊论文

无线传感器网络中基于尺度的协同中继跨层QoS路由算法

徐楠,孙亚民,于继明,王华

期刊论文

Review of the crushing response of collapsible tubular structures

Vivek PATEL, Gaurav TIWARI, Ravikumar DUMPALA

期刊论文

能源4.0：重塑经济结构——互联网技术与智慧能源

顾为东

期刊论文

能源革命与中国能源经济安全保障探析

黄维和,梅应丹,吴丽丽,梁赟玲,赵晓丽

期刊论文