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基于IFC与gbXML标准的建筑信息模型与绿色建筑分析软件互操作性测试与评估

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图学学报 2018年第3期39卷 530-537页

作者：陈远康虹范运昌郑州大学土木工程学院河南郑州450001

绿色建筑和建筑节能是建筑行业可持续发展的重要因素,然而建筑信息模型(BIM)软件种类繁多、数据标准各异、软件之间的数据传递经常丢失信息。为解决不同软件之间的"信息孤岛"问题和互操作性问题,分析了基于工业基础类标准(IFC)和gbXML... 详细信息

绿色建筑和建筑节能是建筑行业可持续发展的重要因素,然而建筑信息模型(BIM)软件种类繁多、数据标准各异、软件之间的数据传递经常丢失信息。为解决不同软件之间的"信息孤岛"问题和互操作性问题,分析了基于工业基础类标准(IFC)和gbXML标准的绿色建筑模型的结构框架,选取BIM建模软件ArchiCAD和绿色建筑性能分析软件Ecotec,对基于IFC和gbXML标准的软件之间的互操作性进行了测试和评估,确定了建筑信息模型在交互过程中的问题。针对相关问题本文提出了减少IFC标准中的信息冗余、提高IFC标准领域层对绿色建筑信息的支持、提高资源层对相关信息定义的针对性等建议。

关键词：建筑信息模型工业基础类标准 gbXML 绿色建筑评估

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离子色谱法检测腐竹、粉丝中的乌洛托品

应用化学 2014年第11期31卷 1352-1355页

作者：张社利许文静范云场焦作师范高等专科学校焦作454000 河南理工大学物理化学学院焦作454003

建立了腐竹和粉丝中违禁添加剂乌洛托品的离子色谱检测法。实验优化了萃取溶剂和萃取条件。结果表明,乌洛托品在0.10～4.0μg/g范围内线性关系良好,相关系数为0.99937。方法对腐竹和粉丝的检出限为0.079μg/g。腐竹和粉丝的加标回收率为... 详细信息

建立了腐竹和粉丝中违禁添加剂乌洛托品的离子色谱检测法。实验优化了萃取溶剂和萃取条件。结果表明,乌洛托品在0.10～4.0μg/g范围内线性关系良好,相关系数为0.99937。方法对腐竹和粉丝的检出限为0.079μg/g。腐竹和粉丝的加标回收率为86%～96%,相对标准偏差为1.9%。该方法简便,快速,可用于腐竹和粉丝中乌洛托品的检测。

关键词：乌洛托品腐竹粉丝离子色谱法

Semi-analytical Solutions for Wellbores with Graded Skin Zones in Poroelastic Media

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Acta Mechanica Solida Sinica 2024年第3期37卷 385-395页

作者： Zhiqiang fan Zhihe Jin School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi’an710072China Department of Mechanical Engineering University of MaineOronoME04469USA

In analyzing the complex interaction between the wellbore and the reservoir formation,the hydromechanical properties of the region proximal to the wellbore,referred to as the“wellbore skin zone”,play a pivotal role in determining flow dynamics and the resulting formation *** models of the wellbore skin zone generally assume a constant permeability throughout,resulting in a sharp permeability discontinuity at the skin-reservoir *** paper introduces a model for a wellbore with a continuously graded skin zone of finite thickness within a poroelastic *** solutions are derived using the Laplace transform method,addressing both positive and negative skin *** results are presented to illustrate the effects of graded permeability/skin zone thickness on pore pressures and stresses around a *** results highlight a distinct divergence in stress and pore pressure fields when comparing wellbores with negative skin zones to those with positive skin zones or no skin at all.

关键词： Poroelastic Graded permeability Analytical solution Wellbore Skin zone

A progressive framework for rotary motion deblurring

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Defence Technology（防务技术） 2024年第2期32卷 159-172页

作者： Jinhui Qin Yong Ma Jun Huang fan fan You Du School of Electronic Information Wuhan UniversityWuhan430072China

The rotary motion deblurring is an inevitable procedure when the imaging seeker is mounted in the rotating *** rotary motion deblurring methods suffer from ringing artifacts and noise,especially for large blur *** solve the above problems,we propose a progressive rotary motion deblurring framework consisting of a coarse deblurring stage and a refinement *** the first stage,we design an adaptive blur extents factor(BE factor)to balance noise suppression and details *** a novel deconvolution model is proposed based on BE *** the second stage,a triplescale deformable module CNN(TDM-CNN)is designed to reduce the ringing artifacts,which can exploit the 2D information of an image and adaptively adjust spatial sampling *** establish a standard evaluation benchmark,a real-world rotary motion blur dataset is proposed and released,which includes rotary blurred images and corresponding ground truth images with different blur *** results demonstrate that the proposed method outperforms the state-of-the-art models on synthetic and real-world rotary motion blur *** code and dataset are available at https://***/JinhuiQin/RotaryDeblurring.

关键词： Rotary motion deblurring Progressive framework Blur extents factor TDM-CNN

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构造煤萃取物光谱特征与排烃层析效应

煤炭转化 2016年第2期39卷 11-19页

作者：麻志浩阳虹张玉贵范云场河南理工大学物理化学学院 454000 中原经济区煤层(页岩)气河南省协同创新中心河南焦作454000 河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地河南理工大学河南焦作454000

基于"相似相溶"原理,采用三氯甲烷溶剂萃取方法对不同煤级原生结构煤和共生构造煤进行超声-微波协同萃取,借助红外光谱、柱层析和色谱-质谱测试手段,对萃取物结构组成进行分析.研究表明:随煤级的增加,原生结构煤的萃取率全部小于共生构... 详细信息

基于"相似相溶"原理,采用三氯甲烷溶剂萃取方法对不同煤级原生结构煤和共生构造煤进行超声-微波协同萃取,借助红外光谱、柱层析和色谱-质谱测试手段,对萃取物结构组成进行分析.研究表明:随煤级的增加,原生结构煤的萃取率全部小于共生构造煤,原生结构煤萃取率呈减少趋势,构造煤萃取率呈增加趋势,主要取决于演化过程中煤体结构的变化;萃取物呈阶段性、爆发性溶出,脂肪族类物质表现尤为明显,这与不同煤级煤中小分子的赋存形式有关;色谱-质谱测定与红外光谱分析预测结果基本一致,各煤级萃取物脂肪烃较多,芳香烃较少.从微观成烃理论和化学动力学原理对煤成烃成因进行探讨,用层析理论对烃类运移进行了描述.

关键词：构造煤红外光谱色谱-质谱层析效应

Impact of non-ideal UE hardware on cell-free massive MIMO network with centralized operation

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Science China(Information Sciences) 2024年第4期67卷 255-271页

作者： Ning LI Pingzhi fan Institute of Mobile Communications Southwest Jiaotong University

This paper investigates the impact of non-ideal user equipment(UE) hardware on a cell-free(CF) massive MIMO(mMIMO) network with centralized operation under spatially correlated channels. The minimum mean-squared error(MMSE) estimator can be derived with the help of the generic non-ideal UE hardware model. It is demonstrated that even if the effective signal-to-noise ratio approaches infinity, pilot contamination and imperfect hardware can cause a non-zero estimation error floor. After that, a lower bound is determined for the ergodic uplink capacity of the centralized CF mMIMO network under non-ideal UE hardware. Moreover, the optimal receive combining vector is obtained to maximize the uplink spectral efficiency(SE). The maximum ratio(MR) and regularized zero-forcing(RZF) combining schemes are offered as alternatives in light of the computational complexity of the MMSE receiver. Comparing the RZF to the MMSE scheme under different levels of hardware impairments, our findings indicate that the RZF receiver suffers a negligible loss in total SE. For MR combining, a novel closed-form uplink achievable SE expression is obtained based on the MMSE estimator and the use-and-then-forget bounding technique. This expression gives vital insights into the achievable uplink performance with UE hardware impairments. Besides, for various hardware impairment factors, the impact of pilot sequence length on average sum SE is disclosed for different receive combining schemes. To increase the overall SE of the max-min fairness scheme, a heuristic fractional power control scheme with UE hardware impairments is developed, which can essentially avoid sacrificing the SE of other UEs while maximizing the SE of the unluckiest UE in the whole network. Finally,our theoretical performance analysis and power control algorithm are validated by simulation results, and fundamental design guidelines are provided for selecting hardware satisfying the practical UE requirements.

关键词： cell-free massive MIMO centralized operation spatially correlated channels hardware impairments channel estimation uplink spectral efficiency optimal receive combining pilot length design fractional power control

Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction:Efficient photodegradation of organic pollutant and toxicity evaluation

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Journal of Materials Science & Technology 2024年第3期170卷 200-211页

作者： Yanyan Zhao Xu fan Hongxing Zheng Enzhou Liu Jun fan Xuejun Wang College of Biology Pharmacy and Food Engineering Shangluo UniversityShangluo 726000China QinLing-Bashan Mountains Bioresources Comprehensive Development C.I.C. Shaanxi University of TechnologyHanzhong 723001China School of Chemical Engineering Northwest UniversityXi’an 710069China

Constructing of heterojunction was identified as a feasible way to improve photocatalytic activity of *** this work,a n-p type Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction was successfully prepared for organic pollutants *** Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction exhibited much higher pho-tocatalytic activity towards Rhodamine B(92.24%,expose to visible light for 60 min),norfloxacin(81.73%,expose to visible light for 90 min)and levofloxacin(87.46%,expose to visible light for 90 min)than pure Bi_(2)WO_(6)and pure AgInS_(2).Toxicity analysis indicated the low environmental toxicity of Rhodamine B degradation intermediates for Rye seeds and Sudangrass seeds germination and *** study displayed that AgInS_(2)and Bi_(2)WO_(6)work as the primary photocatalyst to form·O_(2)−and ·OH,*** improved photocatalytic activity of the Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction was due to the im-proved light response range and intensified carrier separation ***,a S-scheme charge transfer mechanism including multiple charge transfer channels was *** work could provide an effective strategy for organic pollutants degradation in wastewater.

关键词： Photocatalysis S-scheme heterojunction AgInS_(2) Bi_(2)WO_(6) Toxicity experiments

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风化煤中腐植酸的提取及其光谱学研究

煤炭转化 2013年第2期36卷 87-91页

作者：阳虹李永生范云场张磊河南理工大学物理化学学院河南焦作副教授454000 河南理工大学省部共建瓦斯地质与瓦斯治理国家重点实验室培育基地河南焦作硕士生454000

探讨了从风化煤中提取棕腐酸和黑腐酸的方法,分别用紫外可见光谱、傅立叶变换红外光谱和三维荧光光谱对提取的腐植酸进行了表征,并说明了两种腐植酸结构上的差异.结果表明,棕腐植酸和黑腐植酸官能团种类相似,但含量总体是棕腐酸高于黑腐... 详细信息

探讨了从风化煤中提取棕腐酸和黑腐酸的方法,分别用紫外可见光谱、傅立叶变换红外光谱和三维荧光光谱对提取的腐植酸进行了表征,并说明了两种腐植酸结构上的差异.结果表明,棕腐植酸和黑腐植酸官能团种类相似,但含量总体是棕腐酸高于黑腐酸.两种腐植酸的紫外可见光谱在整个区间的吸光度是随着波长的增大而减小的混合光谱.两种腐植酸都有荧光效应,且无论随着浓度增加或者pH值增加,棕腐植酸和黑腐植酸的发光峰都有红移现象.

关键词：腐植酸紫外可见光谱傅立叶红外光谱荧光光谱风化煤

Soliton resolution and asymptotic stability of N-solutions for the defocusing Kundu–Eckhaus equation with nonzero boundary conditions

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Communications in Theoretical Physics 2024年第1期76卷 1-6页

作者： Engui fan Yanxi Zhang School of Mathematical Sciences and Key Laboratory of Mathematics for Nonlinear Science Fudan UniversityShanghai200433China Tianjin Xinhua High School No.99 machang RoadTianjin300204China

In this paper,we address interesting soliton resolution,asymptotic stability of N-soliton solutions and the Painleve asymptotics for the Kundu-Eckhaus(KE)equation with nonzero boundary conditions iq_(t)+q_(xx)-2(l|q|^(2)-1)q+4β^(2)(lql^(4)-1)q+4iβ(lql^(2))_(x)q=0,q(x,0)=q_(0)(x)-±1,x→±∞.The key to proving these results is to establish the formulation of a Riemann-Hilbert(RH)problem associated with the above Cauchy problem and find its connection with the RH problem of the defocusing NLS *** the■-steepest descent method and the results of the defocusing NLS equation,we find complete leading order approximation formulas for the defocusing KE equation on the whole(x,t)half-plane including soliton resolution and asymptotic stability of N-soliton solutions in a solitonic region,Zakharov-Shabat asymptotics in a solitonless region and the Painlevéasymptotics in two transition regions.

关键词： defocusing Kundu-Eckhaus equation Riemann-Hilbert problems steepest descent method soliton resolution asymptotic stability Painleve transcendents