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Chinese prototype building models for simulating the energy performance of the nationwide building stock

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Building Simulation 2023年第8期16卷 1559-1582页

作者： Jingjing An Yi Wu Chenxi gui Da Yan School of Environment and Energy Engineering Beijing University of Civil Engineering and ArchitectureBeijingChina Building Energy Research Center School of ArchitectureTsinghua UniversityBeijingChina

Building energy modeling(BEM)has become increasingly used in building energy conservation *** building models are developed to represent the typical urban building characteristics of a specific building type,meteorological conditions,and construction *** study included four residential buildings and 11 commercial buildings to represent nationwide building types in *** consideration of five climate zones and different construction years corresponding to national standards,a total of 151 prototype building models were *** building envelope properties,occupancy and energy-related behaviors,and heating,ventilation,and air-conditioning(HVAC)system characteristics were defined according to the corresponding building energy efficiency design standards,HVAC design standards,and through other sources,such as questionnaire surveys,on-site measurements,and literature,which reflect the real situation of existing buildings in *** on the developed prototype buildings,a large database of 9225 models in 270 cities was further developed to facilitate users to simulate building energy in different *** conclusion,the developed prototype building models can represent realistic building characteristics and construction practices of the most common residential and commercial buildings in China,serving as an important foundation for *** models can be used for analyses related to building energy conservation research on typical individual buildings,including energy-saving technologies,advanced controls,and new policies,and providing a reference for the development of building energy codes and standards.

关键词： prototype building models building stock modeling Chinese building building performance simulation energy conservation

Experimental performance evaluation of quadrature amplitude modulation signal transmission in a silicon microring

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Photonics Research 2016年第5期4卷 168-172页

作者： Chengcheng gui Jian Wang Wuhan National Laboratory for Optoelectronics School of Optical and Electronic InformationHuazhong University of Science and Technology

We comprehensively characterize the transmission performance of m-ary quadrature amplitude modulation(m-QAM) signals through a silicon microring resonator in the experiment. Using orthogonal frequency-division multiplexing based on offset QAM(OFDM/OQAM) which is modulated with m-QAM modulations, we demonstrate low-penalty data transmission of OFDM/OQAM 64-QAM, 128-QAM, 256-QAM, and 512-QAM signals in a silicon microring resonator. The observed optical signal-to-noise ratio(OSNR) penalties are 1.7 dB for 64-QAM,1.7 dB for 128-QAM, and 3.1 dB for 256-QAM at a bit-error rate(BER) of 2 × 10^(-3) and 3.3 dB for 512-QAM at a BER of 2 × 10^(-2). The performance degradation due to the wavelength detuning from the microring resonance is evaluated, showing a wavelength range of ~0.48 nm with BER below 2 × 10^(-3). Moreover, we demonstrate data transmission of 191.2-Gbit/s simultaneous eight wavelength channel OFDM/OQAM 256-QAM signals in a silicon microring resonator, achieving OSNR penalties less than 2 dB at a BER of 2 × 10^(-2).

关键词： QAM Experimental performance evaluation of quadrature amplitude modulation signal transmission in a silicon microring OSNR BER OFDM WDM

Surface properties of superfine alumina trihydrate after surface modification with stearic acid

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International Journal of Minerals,Metallurgy and Materials 2015年第5期22卷 537-542页

作者： gui-hua Liu Bo-hao Zhou Yun-feng Li Tian-gui Qi Xiao-bin Li School of Metallurgy and Environment Central South University

The surface properties of superfine alumina trihydrate （ATH） after surface modification were studied by measuring the contact angle, active ratio, oil adsorption, total organic carbon, adsorption ratio, and Fourier transform infrared （FTIR） spectrum. The contact angle increased initially and then slowly decreased with an increase of the amount of stearic acid. However, the surface flee energy decreased ini- tially and then increased. Surface modification with stearic acid or sodium stearate can benefit from elevating temperature. The base surface tension component and the free energy of Lewis acid-base both declined sharply following the surface modification. Excess stearic acid was physically adsorbed in the form of multilayer adsorption, and an interaction between oxygen on the ATH surface and hydroxyl in stearic acid was subsequently determined. Our results further indicated that the contact angle and adsorption ratio can be used as control indicators for surface modification compared with active ratio, oil adsorption and total organic carbon.

关键词： alumina trihydrate surface modification stearic acid surface flee energy surface tension contact angle

Wavelet Analysis of Several Important Periodic Properties in the Relative Sunspot Numbers

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Chinese Journal of Astronomy and Astrophysics 2003年第5期3卷 391-394页

作者： gui-MingLe Jia-LongWang CenterforSpaceScienceandAppliedResearch ChineseacademyofSciencesBeijing100080 NationalAstronomicalObservatories ChineseAcademyofSciencesBeijing100012

We investigate the wavelet transform of yearly mean relative sunspot number series from 1700 to 2002. The curve of the global wavelet power spectrum peaks at 11-yr, 53-yr and 101-yr periods. The evolution of the amplitudes of the three periods is studied. The results show that around 1750 and 1800, the amplitude of the 53-yr period was much higher than that of the the 11-yr period, that the ca. 53-yr period was apparent only for the interval from 1725 to 1850, and was very low after 1850, that around 1750, 1800 and 1900, the amplitude of the 101-yr period was higher than that of the 11-yr period and that, from 1940 to 2000, the 11-yr period greatly dominates over the other two periods.

关键词： Sun: sunspots - Sun: activity - methods: data analysis

Effect of indomethacin on cell cycle proteins in colon cancer cell lines

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World Journal of Gastroenterology 2005年第11期11卷 1693-1696页

作者： Mei-HuaXu gui-YingZhang DepartmentofGastroenterology XiangyaHospitalCentralSouthUniversityChangsha410008HunanProvinceChina

AIM: To studythe effect of indomethacin (IN) on human colon cancer cell line SW480 with p53 mutant and SW480transfected wild-type p53 (wtp53/SW480) in vitro and investigate molecular mechanism of anti-tumor effect of IN on colon ***: SW480 cells and wtp53/SW480 cells were treated with different concentrations of IN respectively,the expressions of CDK2, CDK4 and p21WAF1/CIP1 protein were detected by Western ***: IN gradually down-regulated the expression of CDK2, CDK4 protein of wtp53/SW480 cells in a dosedependent manner, and inhibitory effect reached the maximum level at 600 μmol/L; IN up-regulated the expression of p21WAF1/CIP1 protein in a dose-dependent manner at a certain concentration range, and the expression reached the maximum level at 400 μmol/L,and returned to the base level at 600 μmol/L. The expression of CDK2, CDK4 and p21WAF1/CIP1 protein of SW480cells did not ***: IN exerts antitumor effect partly through down regulation of the expression of CDK2, CDK4 protein and up regulation of the expression of p21WAF1/PIC1.

关键词： CDK2 CDK4 p21WAF1/CIP1 SW480 Colon cancer

Hamiltonian Systems and Darboux Transformation Associated with a 3 × 3 Matrix Spectral Problem

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Communications in Theoretical Physics 2007年第2X期48卷 205-210页

作者： LUO Lin FAN En-gui Department of Mathematics Xiaogan University Xiaogan 432100 China School of Mathematics Fudan University Shanghai 200433 China

Starting from a 3 × 3 matrix spectral problem, we derive a hierarchy of nonlinear equations. It is shown that the hierarchy possesses bi-Hamiltonian structure. Under the symmetry constraints between the potentials and the eigenfunctions, Lax pair and adjoint Lax pairs including partial part and temporal part are nonlinearied into two finitedimensional Hamiltonian systems （FDHS） in Liouville sense. Moreover, an explicit N-fold Darboux transformation for CDNS equation is constructed with the help of a gauge transformation of the spectral problem.

关键词： nonlinear equations Hamiltonian system symmetry constraint Darboux transformation

Dissipative Particle Dynamics Simulation of Onion Phase in Star-block Copolymer

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Chemical Research in Chinese Universities 2013年第1期29卷 171-176页

作者： WUShao-gui DU Ting-ting College of Chemistry and Materials Sciences Sichuan Normal University Chengdu 610068 P. R. China

A dissipative particle dynamics simulation technique was used to investigate the effect of molecular architecture of star-block copolymer on the patterned structure in a nanodroplet. With increasing the ratio of solvophilic to block length to solvophobic block length（RwT）, solvophobic sphere, ordered hexagonal phase, onion phase, perforated onion phase and flocculent phase are formed, respectively. Since onion phase has potential application in controlled drug release, it has received wide attention experimentally and theoretically. Our simulation indicates onion phase forms at a certain RH/T（close to but less than 1）. A star-block copolymer molecule has two conformations in onion phase： either fully located in a shell or shared by two neighboring shells. Central structure affects onion＇s final shape. The molecular number of the copolymer in each shell is a quadratic function of the shell＇s radius. The arm number of star-block copolymer has little influence on onion＇s structure, but slightly affects the solvent content. Additionally, we studied the influence of arm length on onion＇s structure.

关键词： Star-block copolymer Dissipative particle dynamics Onion phase

Changes in Synapses and Axons Demonstrated by Synaptophysin Immunohistochemistry Following Spinal Cord Compression Trauma in the Rat and Mouse

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Biomedical and Environmental Sciences 2004年第3期17卷 281-290页

作者： gui-LINLI MOHAMMADFAROOQUE JONASISAKSSON YNGVEOLSSON BeijingNeurosurgicalInstttute Beijing100050China ResearchGroupofNeuropathology DepartmentofGeneticsandPathologyUniversityHospitalUppsalaSwedenS-75185

Objective and methods To evaluate synaptic changes using synaptophysin immunohistochemstry in rat and mouse, which spinal cords were subjected to graded compression trauma at the level of Th8-9. Results Normal animals showed numerous fine dots of synaptophysin immunoreactivity in the gray matter. An increase in synaptophysin immunoreactivity was observed in the neuropil and synapses at the surface of motor neurons of the anterior horns in the ThS-9 segments lost immunoreactivity at 4-hour point after trauma. The immunoreactive synapses reappeared around motor neurons at 9-day point. Unexpected accumulation of synaptophysin immunoreactivity occurred in injured axons of the white matter of the compressed spinal cord. Conclusion Synaptic changes were important components of secondary injuries in spinal cord trauma. Loss of synapses on motor neurons may be one of the factors causing motor dysfunction of hind limbs and formation of new synapses may play an import,ant role in recovery of motor function. Synaptophysin immunohistochemistry is also a good tool for studies of axonal swellings in spinal cord injuries.

关键词： Synaptophysin Synapses Axons Rat Spinal cord Trauma

考虑客户时间敏感度的众包物流多目标路径优化问题

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物流科技 2025年第1期48卷 17-23页

作者：赵爽耀桂屏屏合肥工业大学管理学院安徽合肥230009

针对传统物流目标规划模型无法挖掘客户时间偏好问题,提出了一种基于客户时间敏感度的物流路径优化模型,以应对众包物流扩大市场份额、提升同业竞争力的需求。在模型中,将不同客户对配送人员到达时间与客户期望偏离程度作为时间敏感信息... 详细信息

针对传统物流目标规划模型无法挖掘客户时间偏好问题,提出了一种基于客户时间敏感度的物流路径优化模型,以应对众包物流扩大市场份额、提升同业竞争力的需求。在模型中,将不同客户对配送人员到达时间与客户期望偏离程度作为时间敏感信息,并引入模糊隶属度函数挖掘客户时间偏好与客户满意度的关系,构建综合成本最小和客户满意度最大的双目标路径优化模型。同时设计带精英策略的非支配排序遗传算法(Elitist Non-dominated Sorting Genetic Algorithm,NSGA-II)求解仿真算例并针对客户时间敏感性差异进行实验分析,为众包物流平台优化配送方案决策提供理论依据。

关键词：带时间窗的车辆路径优化众包物流 NSGA-II 时间敏感性分析