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银税互动、融资约束与小微企业投融资

经济研究 2021年第12期56卷 77-93页

作者：陈彪罗鹏飞杨金强上海财经大学金融学院 200433 湖南大学金融与统计学院 410006 上海财经大学上海市金融信息技术研究重点实验室 200433

为促进大众创业、万众创新,国家税务总局和银保监会联合推出了小微企业新型融资模式——银税互动。本文试图探究银税互动对小微企业融资约束、投融资决策以及纳税行为的影响。研究发现:(1)银税互动可以消除小微企业融资约束;(2)企业投... 详细信息

为促进大众创业、万众创新,国家税务总局和银保监会联合推出了小微企业新型融资模式——银税互动。本文试图探究银税互动对小微企业融资约束、投融资决策以及纳税行为的影响。研究发现:(1)银税互动可以消除小微企业融资约束;(2)企业投资动机与银行信贷乘数呈U型关系,且对增长率较低的企业,宽松的信贷政策对其投资有较大促进作用;(3)银行更青睐于给增长率较高、波动率较低的小微企业贷款;(4)银税互动对小微企业逃税的抑制作用依赖于银行的信贷政策。本文为银税互动受到政府部门和小微企业青睐提供了新的理论解释,同时也为完善银税互动更好助力小微企业诚信纳税、让小微企业享受到诚信纳税红利提供了理论指导。

关键词：银税互动融资约束小微企业投融资信贷政策

苏北盆地典型地区中低温地热流体地球化学特征研究

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高校地质学报 2022年第2期28卷 262-273页

作者：邹鹏飞邱杨范迪富江苏省地质调查研究院南京210018 南京大学地球科学与工程学院南京210023 江苏华东基础地质勘查有限公司南京210007

苏北盆地作为江苏省地热地质条件最优的地区,发育丰富的中低温地热资源。文章选择存在已探明的中温地热井及干热岩验证孔所在的盆地区作为研究区,利用地热流体携带的地球化学信息,了解深部地热储层基本特征及不同深度地热资源的成生关... 详细信息

苏北盆地作为江苏省地热地质条件最优的地区,发育丰富的中低温地热资源。文章选择存在已探明的中温地热井及干热岩验证孔所在的盆地区作为研究区,利用地热流体携带的地球化学信息,了解深部地热储层基本特征及不同深度地热资源的成生关系。结果表明:研究区地热流体中优势阳离子为Na^(+),阴离子呈复合离子型,以Cl^(-)为主,Na^(+)、TDS与Cl^(-)均有着非常好的正相关性。经Na-K-Ca阳离子地热温标与SiO_(2)地热温标法估算研究区地热流体热储温度介于73.8~145.1℃,推测黄荡地热田深部地热流体循环深度为2.1~2.8 km。通过定量计算,获得了地热流体补给高程范围为203.5~418.5 m。经过贝叶斯算法校正后的地热流体^(14)C年龄自西向东呈增加趋势,与地热流体自西向东的径流方向有关,补给区可能位于研究区西南侧的沿盱眙老子山、明光、滁州分布的张八岭丘陵区。结合地热流体循环深度、循环周期(地热流体年龄)、氢氧同位素补给高程、热储温度及宝应1井测井成果,首次建立了宝应黄荡地热田的成矿模式。

关键词：苏北盆地地热流体热储温度地球化学黄荡地热田

有机酸金属盐阴阳离子对卷烟纸燃烧性能影响研究

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中华纸业 2024年第9期45卷 87-92页

作者：刘明李俊慧张鹏飞徐秋菊马欢刘淮张俊华彭林才云南红塔蓝鹰纸业有限公司云南建水654300 昆明理工大学化学工程学院昆明650500

通过制备含有不同金属阳离子(钾和钠离子)的柠檬酸盐以及不同阴离子(柠檬酸根、草酸根、酒石酸根、苹果酸根和氯离子)的钾盐,研究了有机酸金属盐阴阳离子对卷烟纸燃烧性能的影响。研究结果表明:钾离子的助燃效果优于钠离子,而不同阴离... 详细信息

通过制备含有不同金属阳离子(钾和钠离子)的柠檬酸盐以及不同阴离子(柠檬酸根、草酸根、酒石酸根、苹果酸根和氯离子)的钾盐,研究了有机酸金属盐阴阳离子对卷烟纸燃烧性能的影响。研究结果表明:钾离子的助燃效果优于钠离子,而不同阴离子中柠檬酸根离子的助燃效果最佳;因此,柠檬酸根离子协同钾离子使得柠檬酸钾具有最快的阴燃速率和最低的纸样热解活化能,成为所测试添加剂中助燃效果最好的一种。

关键词：卷烟纸助燃剂金属有机酸盐热解燃烧性

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共价有机框架材料在光催化领域中的应用

高等学校化学学报 2020年第9期41卷 1917-1932页

作者：李丽李鹏飞王博北京理工大学化学与化工学院原子分子簇科学教育部重点实验室光电转换材料北京市重点实验室北京理工大学前沿交叉科学研究院北京100081

共价有机框架(COFs)材料是有机构筑基元通过共价键连接而形成的晶态有机多孔材料.COFs具有孔道结构规整、及比表面积高等特点,被广泛地应用于气体储存与分离、催化、传感、储能及光电转化等领域.将具有可调吸光能力的有机构筑基元引入到... 详细信息

共价有机框架(COFs)材料是有机构筑基元通过共价键连接而形成的晶态有机多孔材料.COFs具有孔道结构规整、及比表面积高等特点,被广泛地应用于气体储存与分离、催化、传感、储能及光电转化等领域.将具有可调吸光能力的有机构筑基元引入到COFs中,可使其展现出强大的光催化潜力.近年来,COFs在光催化领域中发展迅猛.本文总结了COFs在光催化产氢、光催化二氧化碳还原、光催化有机反应以及光催化污染物降解等方面的研究进展,并展望了其在光催化领域的应用前景.

关键词：共价有机框架材料光催化光解水产氢二氧化碳还原有机反应污染物降解

Attachable Transparent Luminescent Solar Concentrators for Photovoltaic

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Attachable Transparent Luminescent Solar Concentrators for P...

含时滞反馈与涨落质量的记忆阻尼系统的随机共振

2021全国太阳能电池材料器件与技术大会

作者： pengfei Xia Shuhong Xu Fan Liu Qingyang Lu Kuo yang Zhuyuan Wang Yiping Cui Dayan Ban Chunlei Wang Advanced Photonics Center School of Electronic Science and Engineering Southeast University Waterloo Institute for Nanotechnology and Department of Electrical and Computer Engineering University of Waterloo

As large-area photon collection devices designed to convert sunlight into electricity, luminescent solar concentrators(LSCs) have been proposed for more than 30 years. In practical sunlight-harvesting applications, existing glass windows or curtain walls need to be torn down and then replaced by traditional LSCs with planar optical waveguides, leading to high manufacture and installation costs. One alternative and attractive approach is to design and manufacture LSCs that are compatible with and can be attached directly onto the original building glass windows, which substantially reduces the overall costs. In this paper, we propose a feasible strategy of attachable transparent LSCs, converting ordinary glass to LSCs by simply attaching novel luminescent films. Three basic challenges in fabricating the attachable transparent LSCs are addressed, including(1) the low photoluminescence quantum yield(PLQY) of conventional perovskite-Polyvinylidene fluoride(PVDF) composite films for red-light emission,(2) low optical transmittance due to strong optical scattering of the film, and(3) serious photoluminescence quenching and film decomposition observed typically during film installation. By integrating a phenylethylammonium(PEA)-assisted perovskite-PVDF composite film with a polymer anti-reflection/barrier layer, as-prepared composite films show dramatical improvement in photoluminescence quantum yield from 4.1% to 45.8%(11-fold enhancement), substantially-increased optical transmittance from 30.9% to 71.1%(@700 nm), as well as strongly-suppressed PL quenching during the attaching process. The fabricated attachable LSCs demonstrate a maximum optical efficiency of 2.8% at the geometric factor of 5 and retain 87% of initial optical efficiency after two months of storage in ambient conditions. Webelieve that our attachable LSCs strategy provides a new idea for reducing the practical cost during the manufacturing and application of LSCs.

关键词：

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力学学报 2018年第4期50卷 880-889页

作者：公徐路许鹏飞山西农业大学软件学院山西太谷030801 北京理工大学力学系北京100081

针对具有记忆效应的欠阻尼系统,存在时滞反馈与涨落质量,本文主要研究了其输出稳态响应振幅的随机共振效应.首先通过引入新变量和运用小时滞近似展开理论,将具有非马尔科夫特性的原系统转化为等价的两维马尔科夫线性系统,再利用Shapiro-... 详细信息

针对具有记忆效应的欠阻尼系统,存在时滞反馈与涨落质量,本文主要研究了其输出稳态响应振幅的随机共振效应.首先通过引入新变量和运用小时滞近似展开理论,将具有非马尔科夫特性的原系统转化为等价的两维马尔科夫线性系统,再利用Shapiro-Loginov公式和Laplace变换获得了系统响应的一阶稳态矩和稳态响应振幅的解析表达式.结果表明:当系统参数满足Routh-Hurwitz稳定条件时,稳态响应振幅随质量涨落噪声强度、周期驱动信号频率以及时滞的变化均存在随机共振现象,其中随机多共振现象也被观察到.在适当范围内,通过控制时滞反馈,系统的随机共振效应随着时滞的增大而增强,而较长的记忆时间及增大阻尼参数均对共振行为呈现抑制作用.有效调控时滞反馈与记忆效应的变化关系将有助于增强系统对周期驱动信号的响应强度.最后,通过数值模拟计算验证了理论结果的有效性.

关键词：随机共振广义Langevin方程时滞反馈质量涨落噪声

Prediction Method of Protein Disulfide Bond Based on Pattern Selection

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Engineering（科研） 2013年第10期5卷 409-412页

作者： pengfei Sun Yuanquan Cui Tiankai Chen Ying Zhao College of Computer Science and Technology Harbin Normal University Harbin China

The effect of the different training samples is different for the classifier when pattern recognition system is established. The training samples were selected randomly in the past protein disulfide bond prediction methods, therefore the prediction accuracy of protein contact was reduced. In order to improve the influence of training samples, a prediction method of protein disulfide bond on the basis of pattern selection and Radical Basis Function neural network has been brought forward in this paper. The attributes related with protein disulfide bond are extracted and coded in the method and pattern selection is used to select training samples from coded samples in order to improve the precision of protein disulfide bond prediction. 200 proteins with disulfide bond structure from the PDB database are encoded according to the encoding approach and are taken as models of training samples. Then samples are taken on the pattern selection based on the nearest neighbor algorithm and corresponding prediction models are set by using RBF neural network. The simulation experiment result indicates that this method of pattern selection can improve the prediction accuracy of protein disulfide bond.

关键词： Protein Disulfide Bond Neural Network Nearest Neighbor Algorithm Pattern Selection

Transcription factor ETV4 promotes the development of hepatocellular carcinoma by driving hepatic TNF-αsignaling

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Cancer Communications 2023年第12期43卷 1354-1372页

作者： Dandan Qi Min Lu pengfei Xu Xinli Yao Yongchen Chen Lipeng Gan Yong Li Yahua Cui Xiaomei Tong Shuhong Liu Jingmin Zhao Ningning Liu Xin Ye Key Laboratory of Pathogenic Microbiology and Immunology Institute of Microbiology Chinese Academy of Sciences Beijing P. R. China Savaid Medical School University of Chinese Academy of Sciences Beijing P. R. China The Fifth Medical Center of Chinese People's Liberation Army General Hospital Beijing P. R. China School of Life Sciences University of Science and Technology of China Hefei Anhui P. R. China

Background Hepatic inflammation is the major risk factor of hepatocellular carcinoma(HCC).However,the underlying mechanism by which hepatic inflammation progresses to HCC is poorly *** study was designed to investigate the role of ETS translocation variant 4(ETV4)in linking hepatic inflammation to *** Quantitative real-time PCR and immunoblotting were used to detect the expression of ETV4 in HCC tissues and cell *** sequencing and luciferase reporter assays were performed to identify the target genes of ***-specific ETV4-knockout(ETV4fl/fl,alb-cre)and transgenic(ETV4Hep-TG)mice and diethylnitrosamine-carbon tetrachloride(DEN-CCL4)treatment experiments were applied to investigate the function of ETV4 in *** Cancer Genome Atlas(TCGA)database mining and pathological analysis were carried out to determine the correlation of ETV4 with tumor necrosis factor-alpha(TNF-α)and mitogen-activated protein kinase 11(MAPK11).Results We revealed that ETV4 was highly expressed in *** levels of ETV4 predicted a poor survival rate of HCC *** we identified ETV4 as a transcription activator of TNF-αand ***4 was positively correlated with TNF-αand MAPK11 in HCC *** expected,an increase in hepatic TNF-αsecretion and macrophage accumulation were observed in the livers of ETV4Hep-TG *** protein levels of TNF-α,MAPK11,and CD68 were significantly higher in the livers of ETV4Hep-TG mice compared with wild type mice but lower in ETV4fl/fl,alb-cre mice compared with ETV4fl/fl mice as treated with DEN-CCL4,indicating that ETV4 functioned as a driver of TNF-α/MAPK11 expression and macrophage accumulation during hepatic ***-specific knockout of ETV4 significantly prevented development of DEN-CCL4-induced HCC,while transgenic expression of ETV4 promoted growth of *** ETV4 promoted hepatic inflammation and HCC by activating transcription of TNF-αand *** the ETV4/TNF-αand ETV4/MAPK11 a

关键词： ETV4 TNF-α MAPK11 macrophage hepatocellular carcinoma hepatic inflammation

基于内部控制质量的股利代理理论门槛效应研究

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系统工程理论与实践 2019年第8期39卷 1966-1975页

作者：马鹏飞董竹张欣大连海事大学航运经济与管理学院大连116026 吉林大学数量经济研究中心长春130012

本文以我国沪深两市2011-2016年上市公司作为研究样本,选择内部控制质量作为门槛变量,建立面板门槛模型,研究现金股利与代理成本之间的非线性关系.结果表明,在内部控制的影响下,现金股利与代理成本存在门槛效应:当内部控制质量高于门槛... 详细信息

本文以我国沪深两市2011-2016年上市公司作为研究样本,选择内部控制质量作为门槛变量,建立面板门槛模型,研究现金股利与代理成本之间的非线性关系.结果表明,在内部控制的影响下,现金股利与代理成本存在门槛效应:当内部控制质量高于门槛值时,现金股利可以有效降低代理成本;当内部控制质量低于门槛值时,现金股利则难以降低代理成本.这说明,良好的内部控制是现金股利发挥治理功能的前提与基础.通过统计发现,高于内部控制质量门槛值的公司数量更多、股利支付公司占比更高.表明股利代理理论在我国是有效的,且正是由于该门槛效应的存在,使内部控制质量较高的公司更愿意支付现金股利.因此,本文不赞同以往内部控制与现金股利之间的"结果"或"替代"假说.

关键词：现金股利代理成本内部控制面板门槛