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Macroscopic model and statistical model to characterize electromagnetic information of a digital coding metasurface

National Science Review 2024年第3期11卷 159-171页

作者： rui wen shao Jun Wei Wu Zheng Xing Wang Hui Xu Han Qing Yang Qiang Cheng Tie Jun Cui Institute of Electromagnetic Space Southeast University State Key Laboratory of Millimeter Waves Southeast University Peng Cheng Laboratory Pazhou Laboratory(Huangpu)

A digital coding metasurface is a platform connecting the digital space and electromagnetic wave space, and has therefore gained much attention due to its intriguing value in reshaping wireless channels and realizing new communication architectures. Correspondingly, there is an urgent need for electromagnetic information theory that reveals the upper limit of communication capacity and supports the accurate design of metasurface-based communication systems. To this end, we propose a macroscopic model and a statistical model of the digital coding metasurface. The macroscopic model uniformly accommodates both digital and electromagnetic aspects of the meta-atoms and predicts all possible scattered fields of the digital coding metasurface based on a small number of simulations or measurements. Full-wave simulations and experimental results show that the macroscopic model is feasible and accurate. A statistical model is further proposed to correlate the mutual coupling between meta-atoms with covariance and to calculate the entropy of the equivalent currents of digital coding metasurface. These two models can help reconfigurable intelligent surfaces achieve more accurate beamforming and channel estimation, and thus improve signal power and coverage. Moreover, the models will encourage the creation of a precoding codebook in metasurface-based direct digital modulation systems, with the aim of approaching the upper limit of channel capacity. With these two models, the concepts of current space and current entropy, as well as the analysis of information loss from the coding space to wave space, is established for the first time, helping to bridge the gap between the digital world and the physical world, and advancing developments of electromagnetic information theory and new-architecture wireless systems.

关键词： electromagnetic information theory current entropy current space digital coding metasurface macroscopic model statistical model

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公共财政绩效审计质量评价指标体系研究

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安徽工业大学学报（社会科学版） 2015年第6期32卷 34-38页

作者：芮绍文马鞍山市审计局安徽马鞍山243000

根据相关法律法规,并借鉴英国审计委员会"质量环节"与"3E体系",将审计质量评价指标按比例分为一般性指标和绩效指标,其中一般指标包括针对审计前、中、后三个阶段的具体指标,绩效指标涵盖经济性、效率性、效果性三方面的指标,从而构建... 详细信息

根据相关法律法规,并借鉴英国审计委员会"质量环节"与"3E体系",将审计质量评价指标按比例分为一般性指标和绩效指标,其中一般指标包括针对审计前、中、后三个阶段的具体指标,绩效指标涵盖经济性、效率性、效果性三方面的指标,从而构建一个较为完善的审计质量评价指标体系,作为国家预算执行审计的评价工具,以提高公共预算执行审计质量,促进公共预算执行审计工作的发展。

关键词：公共预算执行审计质量绩效评价指标

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Primary parenchymal squamous cell carcinoma of the kidney:A case report

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World Journal of Clinical Cases 2025年第4期13卷 34-40页

作者： Zhi-Hui Zheng Bo shao Chao-Min Xu Ke Wang Jia-Zhu wen Li-Kang Luo Jia-Cheng Guan Department of Ultrasound The Second People’s Hospital of QuzhouQuzhou 324000Zhejiang ProvinceChina Department of Radiology Shulan(Quzhou)HospitalQuzhou 324000Zhejiang ProvinceChina Department of Radiology The Second People’s Hospital of QuzhouQuzhou 324000Zhejiang ProvinceChina Department of Pathology The Second people’s Hospital of QuzhouQuzhou 324000Zhejiang ProvinceChina

BACKGROUND Primary squamous cell carcinoma(SCC)of the renal parenchyma is extremely rare,with only nine cases *** SUMMARY This study reports a 51-year-old man with primary SCC of the renal *** patient was admitted with recurrent dull pain and discomfort in the right lumbar region,which had worsened over 2 weeks,accompanied by painful gross *** antigen(SCCA)levels were elevated,and imaging revealed a renal mass with associated *** patient underwent laparoscopic unilateral nephrectomy and lymph node *** pathology confirmed highly differentiated SCC with necrosis in the right renal parenchyma,with negative renal pelvis and *** pathological stage was *** months after surgery,the tumor recurred with involvement of the liver,right psoas major muscle,and inferior vena *** patient refused chemotherapy and succumbed to the disease 6 months postoperatively due to disease *** We report a case of primary SCC of the renal parenchyma,a rare renal *** clinical symptoms,laboratory tests,and imaging findings are nonspecific,making accurate and timely diagnosis *** to the literature,for patients with renal calculi accompanied by a renal mass,elevated serum SCCA levels,and magnetic resonance imaging showing cystic or cystic-solid masses within the kidney with pseudocapsules and heterogeneous mild enhancement,the possibility of this disease should be considered.

关键词： Renal tumor Renal parenchyma Squamous cell carcinoma Renal calculi Computed tomography Case report

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负离子功能粘胶纤维的研制

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天津工业大学学报 2004年第4期23卷 44-47页

作者：谢跃亭张瑞文邵长金新乡白鹭化纤集团新乡453011

选用自然界中宝石级电气石经过特殊表面处理工艺,制作成纳米级化纤添加剂,再经特殊工艺使其均匀地分散在纺丝粘胶中,经过近似常规纺丝方法得到产生负离子功能的粘胶纤维.文中对负离子粘胶纤维的生产工艺、负离子发生的原理以及负离子功... 详细信息

选用自然界中宝石级电气石经过特殊表面处理工艺,制作成纳米级化纤添加剂,再经特殊工艺使其均匀地分散在纺丝粘胶中,经过近似常规纺丝方法得到产生负离子功能的粘胶纤维.文中对负离子粘胶纤维的生产工艺、负离子发生的原理以及负离子功能粘胶纤维的功能及产品性能做了详细陈述.

关键词：负离子粘胶纤维电气石功能纤维

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Two-dimensional gersiloxenes with tunable band gap as new photocatalysts

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Rare Metals 2020年第6期39卷 610-612页

作者： shao-wen Cao State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Designing highly efficient and stable photocatalysts is of vital importance for solar-to-fuel conversion,as a potential strategy to address the concerns of global energy crisis and environmental *** development of novel photocatalytic materials is desirable to overcome those shortcomings of traditional semiconductor photocatalysts.

关键词： catalysts overcome shortcomings

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Learn Robust Pedestrian Representation Within Minimal Modality Discrepancy for Visible-Infrared Person Re-Identification

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Journal of Computer Science & Technology 2022年第3期37卷 641-651页

作者： Yu-Jie Liu wen-Bin shao Xiao-rui Sun College of Computer Science and Technology China University of Petroleum(East China)Qingdao 266580China

Visible-infrared person re-identification has attracted extensive attention from the community due to its potential great application prospects in video *** are huge modality discrepancies between visible and infrared images caused by different imaging *** studies alleviate modality discrepancies by aligning modality distribution or extracting modality-shared features on the original ***,they ignore a key solution,i.e.,converting visible images to gray images directly,which is efficient and effective to reduce modality *** this paper,we transform the cross-modality person re-identification task from visible-infrared images to gray-infrared images,which is named as the minimal modality *** addition,we propose a pyramid feature integration network(PFINet)which mines the discriminative refined features of pedestrian images and fuses high-level and semantically strong features to build a robust pedestrian ***,PFINet first performs the feature extraction from concrete to abstract and the top-down semantic transfer to obtain multi-scale feature ***,the multi-scale feature maps are inputted to the discriminative-region response module to emphasize the identity-discriminative regions by the spatial attention ***,the pedestrian representation is obtained by the feature *** experiments demonstrate the effectiveness of PFINet which achieves the rank-1 accuracy of 81.95%and mAP of 74.49%on the multi-all evaluation mode of the SYSU-MM01 dataset.

关键词： person re-identification modality discrepancy discriminative feature

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不同宿主来源产气荚膜梭菌生物被膜形成前后药物敏感性分析

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动物医学进展 2025年第1期46卷 38-42页

作者：吴莹邵长军刘文华青岛农业大学动物医学院山东青岛266109 烟台市农科院山东烟台264200

为了检测5株不同宿主来源产气荚膜梭菌形成生物被膜能力及其对抗菌药物的敏感性差异,首先用纸片扩散法药敏试验测定5株不同来源的产气荚膜梭菌对7种抗菌药物的敏感性;筛选高敏药物测定各菌株的最小抑菌浓度(MIC);利用结晶紫染色法检测... 详细信息

为了检测5株不同宿主来源产气荚膜梭菌形成生物被膜能力及其对抗菌药物的敏感性差异,首先用纸片扩散法药敏试验测定5株不同来源的产气荚膜梭菌对7种抗菌药物的敏感性;筛选高敏药物测定各菌株的最小抑菌浓度(MIC);利用结晶紫染色法检测不同来源产气荚膜梭菌生物被膜形成能力和高敏药物对生物被膜的抑制和清除能力。药敏结果显示,5株不同宿主来源产气荚膜梭菌均对氨苄西林高度敏感,对其余6种抗菌药物有不同程度耐药;氨苄西林对不同菌株的MIC值在0.031~2.000μg/mL之间;所有菌株均能生成生物被膜,但生物被膜生成能力有差异;不同菌株在各自4、2、1 MIC下生物被膜的生成受到不同程度抑制,而亚抑菌浓度的氨苄西林能刺激生物被膜的生成,氨苄西林对已经生成的生物被膜不能完全清除。结果表明,不同来源产气荚膜梭菌形成生物被膜前后对药物敏感性不同,可为产气荚膜梭菌的临床用药选择及使用剂量提供一定的参考依据。

关键词：产气荚膜梭菌生物被膜最小抑菌浓度耐药性

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Characteristics of structural loess strength and preliminary framework for joint strength formula

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Water Science and Engineering 2014年第3期7卷 319-330页

作者： Rong-jian LI Jun-ding LIU rui YAN wen ZHENG Sheng-jun shao Institute of Geotechnical Engineering Xi'an University of Technology Open Research Laboratory of Geotechnical Engineering Ministry of Land and ResourcesChang'an University

The strength of structural loess consists of the shear strength and tensile strength. In this study, the stress path, the failure envelope of principal stress （ Kf line）, and the strength failure envelope of structurally intact loess and remolded loess were analyzed through three kinds of tests： the tensile strength test, the uniaxial compressive strength test, and the conventional triaxial shear strength test. Then, in order to describe the tensile strength and shear strength of structural loess comprehensively and reasonably, a joint strength formula for structural loess was established. This formula comprehensively considers tensile and shear properties. Studies have shown that the tensile strength exhibits a decreasing trend with increasing water content. When the water content is constant, the tensile strength of the structurally intact soil is greater than that ofremolded soil. In the studies, no loss of the originally cured cohesion in the structurally intact soil samples was observed, given that the soil samples did not experience loading disturbance during the uniaxial compressive strength test, meaning there is a high initial structural strength. The results of the conventional triaxial shear strength test show that the water content is correlated with the strength of the structural loess. When the water content is low, the structural properties are strong, and when the water content is high, the structural properties are weak, which means that the water content and the ambient pressure have significant effects on the stress-strain relationship of structural loess. The established joint strength formula of structural loess effectively avoids overestimating the role of soil tensile strength in the traditional theory of Mohr-Coulomb strength.

关键词： structurally intact loess, remolded loess, tensile strength shear strength stress path failure envelope of principal stress ( Kf line) strength failure envelope joint strength formula

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内蒙古自治区2008-2015年手足口病流行病学特征及病原学分析

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中国病毒病杂志 2017年第2期7卷 107-112页

作者：程学森王东艳张勇王文瑞闫绍宏许文波田晓灵内蒙古医科大学内蒙古呼和浩特010059 中国疾病预防控制中心病毒病预防控制所卫生部医学病毒病重点实验室北京102206 内蒙古自治区综合疾病预防控制中心内蒙古自治区重点实验室内蒙古呼和浩特010031

目的分析内蒙古自治区2008-2015年手足口病的流行特征和主要致病病原,为手足口病防控提供基础依据。方法应用描述性流行病学方法,对内蒙古自治区2008-2015年手足口病流行进行三间分布和主要病原的统计分析。结果内蒙古自治区2008-2015... 详细信息

目的分析内蒙古自治区2008-2015年手足口病的流行特征和主要致病病原,为手足口病防控提供基础依据。方法应用描述性流行病学方法,对内蒙古自治区2008-2015年手足口病流行进行三间分布和主要病原的统计分析。结果内蒙古自治区2008-2015年累计报告手足口病144 915例,死亡32例,发病高峰主要集中在6~7月份;发病人群主要集中在1~5岁,占总发病数的85.80%;男性发病率高于女性,性别比为1.45∶1;2009年和2011年发病率较高,分别为133.62/10万和94.04/10万,2015年发病率为48.77/10万,为2008年之后发病率最低年份;各盟市中,乌海市发病率最高,达184.83/10万,乌兰察布市最低,为26.35/10万。实验室检测和监测结果提示8年平均病原构成以EV-A71为优势病原(占33.15%),CV-A16次之(占22.42%),其他肠道病毒所占比例接近一半(占44.43%)。结论内蒙古自治区手足口病具有明显的时间、地域、人群流行特征,2015年发病率为2008年之后历年新低,提示未来几年可能出现手足口病发病率升高趋势,甚至可能出现暴发疫情,应通过加强预警监测,做好应急处置准备,加大宣传教育力度等措施来预防手足口病大规模暴发疫情的出现。

关键词：手足口病流行病学特征病原学肠道病毒

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Numerical study of the deep removal of R134a from non-condensable gas mixture by cryogenic condensation and de-sublimation

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Chinese Journal of Chemical Engineering 2023年第9期61卷 180-191页

作者： Hongbo Tan Boshi shao Na wen Department of Refrigeration and Cryogenic Engineering School of Energy and Power EngineeringXi’an Jiaotong UniversityXi’an 710049China

Nowadays,the limits on greenhouse gas emissions are becoming increasingly *** present research,a two-dimensional numerical model was established to simulate the deep removal of 1,1,1,2-tetrafluoroethane(R134a)from the non-condensable gas(NCG)mixture by cryogenic condensation and *** wall condensation method was compiled into the Fluent software to calculate the condensation of R134a from the gas ***,the saturated thermodynamic properties of R134a under its triple point were extrapolated by the equation of *** simulation of the steam condensation with NCG was conducted to verify the validity of the model,the results matched well with the experimental ***,the condensation characteristics of R134a with NCG and the thermodynamic parameters affecting condensation were *** results show that the section with relatively higher removal efficiency is usually near the *** cold wall temperature has a great influence on the R134a removal performance,e.g.,a 15 K reduction of the wall temperature brings a reduction in the outlet R134a molar fraction by 85.43%.The effect of changing mass flow rate on R134a removal is mainly reflected at the outlet,where an increase in mass flow rate of 12.6% can aggravate the outlet molar fraction to 210.3% of the *** research can provide a valuable reference for the simulation of the deep removal of various low-concentration gas using condensation and de-sublimation methods.

关键词： Numerical simulation Greenhouse gas Condensation De-sublimation Vapor deep removal Non-condensable gas

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