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互联网金融崛起下中国上市商业银行效率研究——基于三阶段DEA法

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征信 2018年第12期36卷 72-78页

作者：周朝波彭欢重庆理工大学经济金融学院重庆400054

利用三阶段DEA法,对中国上市商业银行2013—2017年在互联网金融崛起背景下的效率进行研究,结果表明:外部环境因素对商业银行效率的影响差异较大,剔除外部环境因素影响的三阶段DEA法测算结果比经典DEA法更能客观反映商业银行的效率水平;... 详细信息

利用三阶段DEA法,对中国上市商业银行2013—2017年在互联网金融崛起背景下的效率进行研究,结果表明:外部环境因素对商业银行效率的影响差异较大,剔除外部环境因素影响的三阶段DEA法测算结果比经典DEA法更能客观反映商业银行的效率水平;整体而言,上市商业银行在面对互联网金融的冲击时,仍不能有效抵御负面影响;股份制商业银行的经营表现高于国有商业银行;目前达到效率相对有效的商业银行数量较少,大部分商业银行效率水平存在提升空间。基于研究结论,提出了应对互联网金融冲击的建议,如重视客户金融需求、加强与互联网金融企业的合作、重点挖掘和培养复合型金融人才、提升科技创新能力等。

关键词：商业银行效率互联网金融三阶段DEA法

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构建和谐社会与媒介“民生新闻”改革

西南民族大学学报（人文社会科学版） 2005年第7期26卷 41-43页

作者：彭焕萍四川大学文学与新闻学院四川成都610064

民生新闻的蓬勃发展和民生新闻栏目火爆,都无法掩饰民生新闻“市民化”、低俗化的倾向。民生新闻要避免在激烈的新闻恶战中迷失方向、实现可持续良性发展,必须借鉴公共新闻理念:报道题材的选择要突出公共服务性;强化平民意识的同时,要... 详细信息

民生新闻的蓬勃发展和民生新闻栏目火爆,都无法掩饰民生新闻“市民化”、低俗化的倾向。民生新闻要避免在激烈的新闻恶战中迷失方向、实现可持续良性发展,必须借鉴公共新闻理念:报道题材的选择要突出公共服务性;强化平民意识的同时,要突出舆论导向和人文关怀主旨。

关键词：民生新闻低俗化公共新闻人文关怀

Large-scale identification of wheat genes resistant to cereal cyst nematode Heterodera avenae using comparative transcriptomic analysis

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Large-scale identification of wheat genes resistant to cerea...

DSMC-LES方法数值模拟鼓泡流化床内气泡和颗粒流动行为

中国植物病理学会第十二届青年学术研讨会

作者： Ling'an Kong Duqing Wu Wenkun huang huan peng Gaofeng Wang Jiangkuan Cui Shiming Liu Zhigang Li Jun Yang Deliang peng State Key Laboratory of Agrobiotechnology and MOA Key Laboratory of Plant Pathology China Agricultural University

Cereal cyst nematode Heterodera avenae,an important soil-borne pathogen on wheat,causes numerous yield losses annually worldwide,and utilization of resistant cultivars is one of the best strategies to control ***,target genes were scare available for breeding resistant *** identify more applicable candidate resistance genes against *** for breeding cultivars,RNA-sequencing for comparative transcriptomic analysis was performed by using an incompatible wheat cultivar VP1620 infected with *** at early stage（24 h,3d and 8 d,respectively）,while the cultivar WEN19 was used as compatible *** assays showed that VP1620 failed to block penetration and migration of *** but delay transition of developmental stages,and eventually leading to significant reduction in cyst formation.A novel strategy was then established to generate clean data by removing the transcripts of *** within raw data before *** types of expression profiles were established to predict candidate resistance *** the uncoordinated expression profiles with transcript abundance as a standard,totally 424 candidate resistance genes including 302 overlapping genes and 122 VP1620-specific genes were *** genes with similar expression patterns were further classified according to the scales of changed transcript abundances,and 182 genes were totally identified as supplemental candidate resistance *** characterizations revealed that diverse defense-related pathways were responsible for resistance against ***,phospholipase was found to involve in many defense-related pathways and localize in the connection ***,strong bursts of reactive oxygen species（ROS） within VP1620 roots infected with *** were induced at 24 h and 3 d rather than 8 d,and eight ROS-producing genes including three class III peroxidase and five lipoxygenase genes,were significantly *** high throughput identific

关键词： cereal cyst nematode anti-development transcripts filteration genetic background unification expression profile plant-nematode interactions

来源： cnki会议评论

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高校化学工程学报 2006年第2期20卷 180-185页

作者：刘欢鹏刘玉成李巍哈尔滨工业大学能源科学与工程学院黑龙江哈尔滨150001 大庆石油管理局电力集团电调中心黑龙江大庆163000

基于稠密气体分子动力学和气固两相流体动力学，建立流化床稠密气固两相离散颗粒运动-碰撞解耦模型，采用直接模拟蒙特卡罗方法（DSMC）模拟颗粒间的碰撞，采用考虑颗粒脉动流动对气相湍流流动影响的大涡模拟（LES）研究气相湍流，单颗... 详细信息

基于稠密气体分子动力学和气固两相流体动力学，建立流化床稠密气固两相离散颗粒运动-碰撞解耦模型，采用直接模拟蒙特卡罗方法（DSMC）模拟颗粒间的碰撞，采用考虑颗粒脉动流动对气相湍流流动影响的大涡模拟（LES）研究气相湍流，单颗粒运动满足牛顿第二定律，颗粒相和气相相间作用的双向耦合由牛顿第三定律确定。数值模拟流化床中颗粒流动以及气泡的生成、长大和破碎过程，获得颗粒轴向和径向速度的概率密度分布，及颗粒浓度分布。计算结果表明床内气泡的形成造成床内颗粒的循环，使得流化床内颗粒具有不同的轴向和径向脉动速度，颗粒分速度分布近似服从高斯分布。颗粒温度随颗粒浓度增加，达到最大值后，随颗粒浓度增大而下降。流化床颗粒浓度脉动主要是低频部分，高频分量较低，表明在流化床内颗粒浓度脉动频率低，能量高，颗粒浓度脉动主频率为0．04～1．0Hz，其值与Pain et al．获得的颗粒浓度脉动主频率基本吻合。

关键词： DSMC方法大涡模拟离散颗粒运动-碰撞解耦模型颗粒温度

An unprotected vulnerable relict subtropical conifer-Keteleeria evelyniana: Its forests, populations, growth and endangerment by invasive alien plant species in China

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Plant Diversity 2024年第5期46卷 648-660页

作者： Cindy Q.Tang Min-Rui Du huan-Chong Wang You-Cai Shi Jia-Le Zeng Shu-Li Xiao peng-Bin Han Jian-Ran Wen Shi-Qian Yao Ming-Chun peng Chong-Yun Wang Yong-Ping Li Jordi López-Pujol Institute of Ecology and Geobotany College of Ecology and Environmental ScienceYunnan UniversityBuilding#3Guozhong DalouDongwaihuan South RoadUniversity TownChenggong New DistrictKunming 650504YunnanChina College of Life Sciences Yunnan UniversityShengming Kexueyuan Building#2Chenggong CampusDongwaihuan South RoadUniversity TownChenggong New DistrictKunming 650504YunnanChina College of Natural Resources Yunnan UniversityChenggong CampusDongwaihuan South RoadUniversity TownChenggong New DistrictKunming 650504YunnanChina Botanic Institute of Barcelona(IBB CSIC-CMCNC)Passeig del Migdia s/nBarcelona 08038CataloniaSpain Escuela de Ciencias Ambientales Universidad Espíritu Santo(UEES)Samborondon 091650Ecuador

Relict subtropical coniferous forests in China face severe fragmentation,resulting in declining populations,and some are under significant threat from invasive alien *** the crucial importance of understanding forest dynamics,knowledge gaps persist,particularly regarding the impact of invasive plants on vulnerable natives like Keteleeria *** this study,we investigated the impact of invasive plants on the regeneration of forests dominated by ***,a subtropical relict species in southwestern *** this purpose,we characterized forest dynamics of 160 forest plots featuring *** as the primary dominant species and determined whether the presence of invasive plants was correlated with regeneration of *** identified four distinct forest types in which *** was *** found that radial growth of *** trees is faster in younger ageclasses today than it was for older trees at the same *** population structure of *** in each forest type exhibited a multimodal age-class ***,three forest types lacked established saplings younger than 10 years old,a situation attributed to the dense coverage of the invasive alien Ageratina *** invasive species resulted in a reduction of understory species ***,our analysis uncovered a significant negative correlation in phylogenetic relatedness(net relatedness index)between native and invasive alien plant species in eastern *** suggests closely related invasive species face heightened competition,hindering successful *** together,our findings indicate that successful establishment and habitat restoration of *** seedling/saplings require effective measures to control invasive plants.

关键词： Keteleeria evelyniana Age structure Regeneration Species diversity Invasive alien species Phylogenetic relatedness

Amplifiable protein identification via residue-resolved barcoding and composition code counting

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National Science Review 2024年第07期 205-217页

作者： Weiming Guo Yuan Liu Yu Han huan Tang Xinyuan Fan Chu Wang peng R.Chen Synthetic and Functional Biomolecules Center Beijing National Laboratory for Molecular SciencesKey Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of Chemistry and Molecular Engineering Peking University Peking-Tsinghua Center for Life Sciences Academy for Advanced Interdisciplinary Studies Peking University

Ultrasensitive protein identification is of paramount importance in basic research and clinical diagnostics but remains extremely challenging. A key bottleneck in preventing single-molecule protein sequencing is that, unlike the revolutionary nucleic acid sequencing methods that rely on the polymerase chain reaction(PCR) to amplify DNA and RNA molecules, protein molecules cannot be directly amplified. Decoding the proteins via amplification of certain fingerprints rather than the intact protein sequence thus represents an appealing alternative choice to address this formidable challenge. Herein, we report a proof-of-concept method that relies on residue-resolved DNA barcoding and composition code counting for amplifiable protein fingerprinting(AmproCode). In AmproCode, selective types of residues on peptides or proteins are chemically labeled with a DNA barcode, which can be amplified and quantified via quantitative PCR. The operation generates a relative ratio as the residue-resolved ‘composition code’ for each target protein that can be utilized as the fingerprint to determine its identity from the proteome database. We developed a database searching algorithm and applied it to assess the coverage of the whole proteome and secretome via computational simulations, proving the theoretical feasibility of AmproCode. We then designed the residue-specific DNA barcoding and amplification workflow, and identified different synthetic model peptides found in the secretome at as low as the fmol/L level for demonstration. These results build the foundation for an unprecedented amplifiable protein fingerprinting method. We believe that, in the future,AmproCode could ultimately realize single-molecule amplifiable identification of trace complex samples without further purification, and it may open a new avenue in the development of next-generation protein sequencing techniques.

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中国货币运行中现金漏损率的变化规律及其原因分析

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商业经济与管理 2011年第4期 56-62页

作者：彭欢冯尧皮天雷重庆理工大学经济与贸易学院重庆400054 中信控股有限责任公司战略规划与业务发展部北京100004 重庆大学经济与工商管理学院重庆400030

文章首次采用结构突变模型,将现金漏损率纳入资产需求理论分析框架对中国的现金漏损率的变化规律和影响因素进行实证研究。得到如下结论:现金漏损率的变化在1992年发生了明显的结构突变,改革开放以来,中国现金漏损率变化呈现先上升后下... 详细信息

文章首次采用结构突变模型,将现金漏损率纳入资产需求理论分析框架对中国的现金漏损率的变化规律和影响因素进行实证研究。得到如下结论:现金漏损率的变化在1992年发生了明显的结构突变,改革开放以来,中国现金漏损率变化呈现先上升后下降的阶段性特征,存在明显的季节性波动规律;1992年之前,现金漏损率的不断上升主要归因于物价上涨因素,而1992年之后,现金漏损率的逐渐下降则主要是由于中国经济的持续增长与金融改革的深化造成的;而近段时间通胀预期和各地出台的各种地产调控有可能导致现金漏损率反弹。因此文章建议,当前在稳定物价和房价的同时,必须开辟更多的金融投资渠道,以免现金漏损率的反弹带来通胀的潜在隐患。

关键词：现金漏损率结构突变资产需求理论货币政策

国外甜菜孢囊线虫发生危害、生物学和控制技术研究进展

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植物保护 2015年第5期41卷 1-7页

作者：彭德良彭焕刘慧中国农业科学院植物保护研究所植物病虫害生物学国家重点实验室北京100193 全国农业技术推广服务中心北京100125

甜菜孢囊线虫（Heterodera schachtii Schmidt）是全世界重要检疫性有害生物,对甜菜具有毁灭性危害,该线虫已在全世界50多个国家或地区有分布,22个国家将其列为检疫对象。甜菜孢囊线虫寄主多达23科95属218种植物,可导致甜菜产量损失达25... 详细信息

甜菜孢囊线虫（Heterodera schachtii Schmidt）是全世界重要检疫性有害生物,对甜菜具有毁灭性危害,该线虫已在全世界50多个国家或地区有分布,22个国家将其列为检疫对象。甜菜孢囊线虫寄主多达23科95属218种植物,可导致甜菜产量损失达25%～70%,甚至绝产,在欧洲每年造成的经济损失已超过9000万欧元,严重威胁当地甜菜生产和制糖业。甜菜孢囊线虫是我国重要进境检疫性有害生物,因其对甜菜具有毁灭性危害,我国各级农业行政主管部门对甜菜孢囊线虫都高度重视,严防该线虫的暴发和危害,本文介绍国外甜菜孢囊线虫研究进展。

关键词：甜菜孢囊线虫生物学控制技术

Treatment of anastomotic stricture after rectal cancer operation by magnetic compression technique:A case report

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World Journal of Gastrointestinal Surgery 2024年第5期16卷 1443-1448页

作者： Miao-Miao Zhang huan-Chen Sha Hai-Rong Xue Yuan-Fa Qin Fang-Fang Dong Li Zhang Yi Lyu Xiao-peng Yan Department of Hepatobiliary Surgery The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina Shaanxi Provincial Key Laboratory of Magnetic Medicine The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina Department of Gastroenterology The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina

BACKGROUNDThe treatment of postoperative anastomotic stenosis(AS)after resection of colorectalcancer is *** balloon dilation is used to treat stenosisin such cases,but some patients do not show improvement even after multipleballoon *** compression technique(MCT)has been used for gastrointestinalanastomosis,but its use for the treatment of postoperative AS aftercolorectal cancer surgery has rarely been *** SUMMARYWe report a 72-year-old man who underwent radical resection of colorectal cancerand ileostomy one year *** ileostomy closure was prepared six months ago,but colonoscopy revealed a narrowing of the rectal *** balloondilation was performed three times,but colonoscopy showed no significantimprovement in *** AS was successfully treated using *** is a minimally invasive method that can be used for the treatment of postoperativeAS after colorectal cancer surgery.

关键词： Rectostenosis Magnetic surgery Magnetic Surgery Clinic Rectal cancer Magnetic compression technique Case report