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现代隧道技术 2024年第2期61卷 1-4页

作者：王建宇中铁西南科学研究院有限公司成都611731

时值《现代隧道技术》创刊60周年,本文回顾了60年来中国隧道工程技术进步,追赶现代化水平的历史,并展望未来,论述技术创新目标从“长隧道机械化快速施工”到“安全,优质和环境友好”的提升。

关键词：《现代隧道技术》创刊60周年中国隧道工程技术进步技术创新目标

Robust Transmission for Cognitive Relay Networks

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China Communications 2012年第1期9卷 1-12页

作者： Cao Zhigang wang jianyu Liu Juan wang Xijun Chen Wei State Key Laboratory on Microwave and Digital Communications Tsinghua National Laboratory for Information Science and Technology(TNList)Department of Electronic EngineeringTsinghua UniversityBeijing 100084P.R.China

In cognitive relay networks, the transmission of Secondary Users （SUs） suffers from the activity of Primary Users （PUs） and wireless channel fading. Therefore, how to achieve robust transmission for cognitive relay networks is a challenging task. In this paper, we propose a relaying transmission scheme which exploits robust beamforming at the physical layer and rateless codes at higher layers. We derive the optirml beamforng weight vector and analyze the perforrmnce of the pro- posed scheme when the channel estirmtion is not accurate between two SU nodes. We also study how the anaount of channel information between SU and PU impacts the system perforroance. Sinlation results validate our theoretical analysis and demonstrate that the proposed scheme can signifi- cantly enhance the system throughput.

关键词： cognitive radio relaying transmission robust beamforrning rateless codes

A likely autotetraploidization event shaped the Chinese mahogany(Toona sinensis)genome

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Horticultural Plant Journal 2023年第2期9卷 306-320页

作者： jianyu wang Ziyi Yang Tianyu Lei Yan Zhang Qimeng Xiao Zijian Yu Jiaqi Zhang Sangrong Sun Qiang Xu Shaoqi Shen Zimo Yan Mengnan Fang Yue Ding Zihan Liu Qianwen Zhu Ke Ren Yuxin Pan Haibin Liu Jinpeng wang School of Life Sciences Center for Genomics and Computational BiologyNorth China University of Science and TechnologyTangshanHebei 063000China State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of ScienceBeijing 100093China University of Chinese Academy of Sciences Beijing 100049China

Chinese mahogany(Toona sinensis) is of considerable medical and economic importance, and its genome has been deciphered. However, the process underlying its polyploidy is unclear, and the chromosomal evolutionary trajectory is poorly understood. Here, by reanalysing the *** genome, we found evidence of a tetraploidization event(T. sinensis special tetraploidization, TST) that occurred approximately 15-17 million years ago(MYA) after the core eudicot-common hexaploidization(ECH or gamma) event. We characterized the synonymous nucleotide substitution rates(Ks values) of collinear genes and found that T. sinensis genes affected by the TST evolve at a slower rate than Acer yangbiense genes. Furthermore, we identified homologous genes related to polyploidization and speciation and constructed multiple alignments with different reference genomes. Notably, the significant balance of gene retention and loss characterized in the two TST-derived subgenomes suggests an autopolyploid nature of the TST. Moreover, we deduced the chromosomal karyotypes of the two subgenomes and identified 7chromosomal fusions that have shaped the T. sinensis genome;more information is available on a newly constructed karyotype platform(http://***/Toona_sinensis/***). The T. sinensis genome preserves the ancestral chromosome structure of dicotyledons well and could serve as a good reference for understanding genomic changes in other Meliaceae and Sapindales plants. In addition, we verified that tandem duplication and the ECH have promoted the expansion of terpene synthase(TPS) genes;conversely, the TST seems to have inhibited expansion of these genes. This present effort has clarified the polyploidy events of the T. sinensis genome, filled gaps in the history of karyotype evolution, and laid a solid foundation for further genomic studies in the Meliaceae research community and beyond.

关键词： Toona sinensis Alignment Autotetraploidization Karyotype evolution Terpene synthase genes

PV Abnormal Shading Detection Based on Convolutional Neural Network

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PV Abnormal Shading Detection Based on Convolutional Neural ...

第32届中国控制与决策会议

作者： jianyu wang Bo Zhao Xianshuang Yao School of Automation Engineering Northeast Electric Power University

Abnormal shading on the surface of photovoltaic panels will seriously damage its power generation efficiency and *** paper established an abnormal shading detection system for photovoltaic ***,remove the photovoltaic panel and find the ***,the object detection algorithm is used to identify and classify the *** results show that the system’s abnormal shading classification accuracy is 94.5%,which is 23% higher than the old method.

关键词： Photovoltaic Shading Convolutional Neural Network Object Detection

来源： cnki会议评论

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理念的更新——对软弱围岩隧道工程的思考

现代隧道技术 2018年第6期55卷 1-10页

作者：王建宇中铁西南科学研究院有限公司成都611731

文章着眼于矿山法修建的软弱围岩隧道工程,从现代隧道工程理念出发,探讨了隧道开挖引起的围岩力学形态从松弛到离散的变化过程以及针对这种过程的控制技术和超前支护的功能等问题;针对高地应力软弱围岩挤压性大变形的难题,文章着重论述... 详细信息

文章着眼于矿山法修建的软弱围岩隧道工程,从现代隧道工程理念出发,探讨了隧道开挖引起的围岩力学形态从松弛到离散的变化过程以及针对这种过程的控制技术和超前支护的功能等问题;针对高地应力软弱围岩挤压性大变形的难题,文章着重论述了可让型支护系统作用原理和设计方法。在此基础上,结合工程实际提出了几点看法,供进一步探索、思考和实践。

关键词：新奥法软弱岩体挤压性地层超前支护可让型支护

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隧道工程高水头地下水的处治

现代隧道技术 2013年第1期50卷 46-52页

作者：王建宇郑波中铁西南科学研究院有限公司成都611731

为兼顾人居生态环境保护和衬砌结构的优化,高水头富水地层中的隧道工程的地下水处治,应同时满足控制地下水排放流量和消减作用在衬砌结构上的水压力荷载两个要求。文章借助渗流理论和数值分析,得出水压力折减系数的简单表达式:β=(Q_g-Q... 详细信息

为兼顾人居生态环境保护和衬砌结构的优化,高水头富水地层中的隧道工程的地下水处治,应同时满足控制地下水排放流量和消减作用在衬砌结构上的水压力荷载两个要求。文章借助渗流理论和数值分析,得出水压力折减系数的简单表达式:β=(Q_g-Q_C)/Q_g。从而提出建议:(1)地下水水头大于60m的隧道不适宜采用全封堵型衬砌,在衬砌中必须设置完善的地下水排导系统;(2)地下水排放流量的控制主要通过围岩注浆而不是衬砌封堵;(3)衬砌排水系统通畅的关键是保证防水板背后透水垫层的足够厚度。

关键词：隧道防排水高水头地下水衬砌水压力围岩注浆

Efficient generation of mouse ESCs-like pig nduced pluripotent stem cells

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Protein & Cell 2014年第5期5卷 338-342页

作者： Qi Gu Jie Hao Tang Hai jianyu wang Yundan Jia Qingran Kong Juan wang Chunjing Feng Binghua Xue Bingteng Xie Shichao Liu Jinyu Li Yilong He Jialu Sun Lei Liu Liu wang Zhonghua Liu Qi Zhou State Key Laboratory of Reproductive Biology Institute of Zoology Chinese Academy of Sciences Beijing 100101 China.

Dear Editor, Porcine induced pluripotency stem cells （piPSCs） are promised in basic research, animal husbandry and regen- erative medicine. However, the efficiency of the piPSCs induction has been low and the generated piPSCs varied in cell morphology and cell characteristics. Here we report a novel approach to improve efficiency of piPSCs generation, The induced piPSCs are dome-shaped mouse embryonic stem cells （ESCs）-Iike and display molecular properties of mouse ESCs. Electroporation study reveals that mouse ESCs-like status facilitates .qenetic manipulatinq of piPSCs.

关键词： Efficient ESCs-like pluripotent

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星载光机扫描仪像移模型及补偿方法

红外与激光工程 2012年第4期41卷 952-957页

作者：王跃明王建宇中国科学院上海技术物理研究所上海200083 中国科学院红外探测与成像技术重点实验室上海200083

针对地球自转运动形成的星载光机扫描式成像仪的图像畸变问题,详细描述了畸变量与地球纬度及仪器工作参数之间的关系,给出了太阳同步轨道扫描成像仪的畸变量计算公式。针对传统地面畸变校正算法的不足,提出了基于光学补偿扫描和星上软... 详细信息

针对地球自转运动形成的星载光机扫描式成像仪的图像畸变问题,详细描述了畸变量与地球纬度及仪器工作参数之间的关系,给出了太阳同步轨道扫描成像仪的畸变量计算公式。针对传统地面畸变校正算法的不足,提出了基于光学补偿扫描和星上软件补偿采样的两种像移补偿方法。详细分析两种方法的特点与可行性,并给出仿真结果。该研究工作对于提高星载光机扫描式成像系统的图像质量具有参考意义。

关键词：星载光机扫描仪像移补偿畸变校正

Relationship between CO_2-bearing fluid and gold mineralization in Haigou gold deposit of Jilin

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Global Geology 2015年第1期18卷 1-9页

作者： GAO Song PENG Xiaolei SUN Jinggui FU Lingzhi wang jianyu College of Earth Sciences Jilin University Jilin Haigou Gold Mining Co. LTD

Haigou gold deposit is a typical orogenic gold deposit. There are a reasonable amount of fluid inclusions in the gold deposit,including three types: CO2-H2O-Na Cl inclusions,pure CO2 inclusions and Na Cl-H2 O inclusions,of which most of them are CO2-bearing inclusions. The fluid salinity is 1. 43%- 9. 08%,mainly concentrated in the range of 4. 69%- 5. 41%,the density of CO2 is 0. 69- 0. 80 g / cm3,indicating that the mineralization fluid is low-medium salinity and low density fluid. A series of studies on gold-bearing quartz vein and fluid inclusions show that there exists a positive correlation between the degree of the gold mi-neralization and the amount of CO2 in the inclusions,which means the more CO2-bearing inclusions there are,the higher the content of gold is. CO2 is mainly derived from mantle fluid,and the ore-forming fluid should be derived from mantle fluid and the crust shallow fluid. The conclusions have important denotative meaning on the metallogenic mechanism of orogenic gold deposit and the deep prospecting on metal deposit.

关键词： Haigou gold deposit CO2 fluid gold mineralization orogenic gold deposit ore-forming fluid

Paleo-polyploidization in Lycophytes

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Genomics, Proteomics & Bioinformatics 2020年第3期18卷 333-340页

作者： Jinpeng wang Jigao Yu Pengchuan Sun Chao Li Xiaoming Song Tianyu Lei Yuxian Li Jiaqing Yuan Sangrong Sun Hongling Ding Xueqian Duan Shaoqi Shen Yanshuang Shen Jing Li Fanbo Meng Yangqin Xie jianyu wang Yue Hou Jin Zhang Xianchun Zhang Xiu-Qing Li Andrew HPaterson Xiyin wang Center for Computational Biology and Genomics and School of Life SciencesNorth China University of Science and TechnologyTangshan 063200China National Key Laboratory for North China Crop Improvement and Regulation Agriculture University of HebeiBaoding 071001China State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of ScienceBeijing 100093China Fredericton Research and Development Centre Agriculture and Agri-Food CanadaFrederictonNew BrunswickE3B 4Z7Canada Plant Genome Mapping Laboratory University of AthensAthensGA 30602USA Department of Plant Biology University of GeorgiaAthensGA 30602USA Department of Crop and Soil Science University of GeorgiaAthensGA 30602USA Department of Genetics University of GeorgiaAthensGA 30602USA

Lycophytes and seed plants constitute the typical vascular *** have been thought to have no paleo-polyploidization although the event is known to be critical for the fast expansion of seed ***,genomic analyses including the homologous gene dot plot analysis detected multiple paleo-polyploidization events,with one occurring approximately 13–15 million years ago(MYA)and another about 125–142 MYA,during the evolution of the genome of Selaginella moellendorffii,a model *** addition,comparative analysis of reconstructed ancestral genomes of lycophytes and angiosperms suggested that lycophytes were affected by more paleopolyploidization events than seed *** from the present genomic analyses indicate that paleo-polyploidization has contributed to the successful establishment of both lineages—lycophytes and seed plants—of vascular plants.

关键词： Vascular plant Lycophytes Genome Polyploidy Evolution