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非财务信息在上市公司比较法中应用的难点与解决方案

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中国资产评估 2024年第1期 40-47页

作者：田文韬大连财经学院会计学院辽宁大连116622

传统的财务价值比率在企业价值评估中扮演着重要的角色,但是对于企业的全面发展而言,它们并不能完全反映企业的整体情况。然而,当前实务中上市公司比较法仍然主要使用财务价值比率,相关理论研究发展也不充分,根本原因在于相当多的非财... 详细信息

传统的财务价值比率在企业价值评估中扮演着重要的角色,但是对于企业的全面发展而言,它们并不能完全反映企业的整体情况。然而,当前实务中上市公司比较法仍然主要使用财务价值比率,相关理论研究发展也不充分,根本原因在于相当多的非财务信息天然不是以定量形式呈现。基于此背景,本文首先分析了上市公司比较法第一步可比公司选择及可比性评价、第二步价值比率比较体系构建和第三步非财务价值比率量化中应用非财务信息的具体困难,并结合区间灰数模糊聚类、离散灰数灰靶决策和区间灰数白化三种定量分析方法探讨如何处理这三步中的指标选择及权重确定问题,以期为该方向的进一步研究提供参考。

关键词：财务信息非财务信息市场法模糊聚类灰靶决策

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Python技术在计算机软件中的应用

集成电路应用 2024年第2期41卷 344-346页

作者：田文涛哈尔滨职业技术学院黑龙江150036

阐述Python解释器是一种基于软件平台拓展设计的计算机语言编程技术手段。分析Python技术在计算机软件中的应用优势,具有简单便捷、针对性强、跨平台性、生态系统完善的特点。探讨应用方法,包括用于数据挖掘、软件测试、数据科学、网站... 详细信息

阐述Python解释器是一种基于软件平台拓展设计的计算机语言编程技术手段。分析Python技术在计算机软件中的应用优势,具有简单便捷、针对性强、跨平台性、生态系统完善的特点。探讨应用方法,包括用于数据挖掘、软件测试、数据科学、网站开发。

关键词：计算机技术 Python解释器计算机软件设计编程

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计算机图像处理技术在网页设计中的应用

集成电路应用 2024年第1期41卷 422-424页

作者：田文涛哈尔滨职业技术学院黑龙江150036

阐述计算机图像处理技术具有再现性、精准度、适用宽度的特点,探讨图像处理技术、图像分析技术、压缩处理技术、去噪处理技术,分析计算机图像处理技术在网页设计中的运用,包括网页风格设计、摄影图片设计、网页插图设计、网页LOGO设计... 详细信息

阐述计算机图像处理技术具有再现性、精准度、适用宽度的特点,探讨图像处理技术、图像分析技术、压缩处理技术、去噪处理技术,分析计算机图像处理技术在网页设计中的运用,包括网页风格设计、摄影图片设计、网页插图设计、网页LOGO设计、图像外形与色彩调整设计。

关键词：计算机技术图像处理技术去噪处理网页设计

基于MaxViT和改进几何特征点法的车载单目视觉测速方法研究

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铁道科学与工程学报 2024年第5期21卷 1805-1815页

作者：韩锟田文涛李蔚樊运新张浩波中南大学交通运输工程学院湖南长沙410075 重载快捷大功率电力机车全国重点实验室湖南株洲412000

车载视觉测速技术作为自动驾驶车辆组合测速技术的重要组成,具有硬件成本低、算法拓展性强、低速下测量准确等特点,应用前景广阔。为进一步提高视觉测速算法在各类工况下的精度和鲁棒性,将几何特征点法在特征点充足时测速精度高和深度... 详细信息

车载视觉测速技术作为自动驾驶车辆组合测速技术的重要组成,具有硬件成本低、算法拓展性强、低速下测量准确等特点,应用前景广阔。为进一步提高视觉测速算法在各类工况下的精度和鲁棒性,将几何特征点法在特征点充足时测速精度高和深度学习方法在多场景下测速稳定的优势进行结合,提出一种基于MaxViT和改进几何特征点法的车载单目视觉测速算法。该算法构建基于双输入MaxViT网络和改进几何特征点法的双通道,并行处理车载前视相机获取的连续3帧输入图像序列,滚动估计车辆当前速度,其中双输入MaxViT网络差异化提取图像不同区域的光流特征,估计当前速度所在的置信度为90%的速度区间,改进特征点法基于特征点运动计算当前速度估计值。当速度估计值落在双输入MaxViT网络估计的速度区间时,以该估计值作为实时车速测量值,否则以速度区间中值作为实时车速测量值。当算法迭代运行多帧后,将速度区间中值作为本帧速度输出以减小累积误差。使用6个车速小于40 km/h且包括加减速等工况与直弯道等场景的自建数据集进行实验验证,以理论测速精度0.1 m/s的GPS速度信号为参考速度,本文方法平均相对测速误差少于1.37%,最大相对测速误差少于6.13%。实验结果表明,提出的新方法有效提高了车载视觉测速精度与鲁棒性,可为多元车载视觉测速方法融合提供理论支撑。

关键词：车载车辆测速视觉测速双输入MaxViT网络特征点法验证输出

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环境和缓控释肥复合处理对稻米品质的影响

江苏农业科学 2024年第14期52卷 54-63页

作者：田文涛胡玉婷严鹏刘越田小海长江大学农学院湖北荆州434025 主要粮食作物产业化湖北省协同创新中心湖北荆州434025

环境温度和氮肥是影响稻米品质的2个重要因素。灌浆期高温严重影响水稻的品质,缓控释肥有利于水稻品质的提升,缓控释肥对胁迫高温下不同粒位籽粒品质的交互作用研究较少。本试验采用2个播期、3种肥料下的双因素试验,研究缓控释肥、环境... 详细信息

环境温度和氮肥是影响稻米品质的2个重要因素。灌浆期高温严重影响水稻的品质,缓控释肥有利于水稻品质的提升,缓控释肥对胁迫高温下不同粒位籽粒品质的交互作用研究较少。本试验采用2个播期、3种肥料下的双因素试验,研究缓控释肥、环境温度及其交互作用对胁迫下水稻不同粒位籽粒淀粉组成、贮藏蛋白积累和稻米淀粉糊化特性的影响,探讨缓控释肥对高温胁迫下水稻不同籽粒品质的潜在调节作用。结果表明,播期处理对各品质的影响大于肥料处理。高温播期显著增加了清蛋白含量,显著降低了直链淀粉、醇溶蛋白含量。缓控释肥对直链淀粉和蛋白质的影响因品种不一致。高温播期对籼稻大米的适口性并未造成负面影响。粒位对直链淀粉和蛋白组分无显著影响。高温播期使米粉的峰值黏度和崩解值升高,消减值降低。整精米率与峰值黏度、崩解值BD呈负相关,高温降低碾米品质的同时利于食味品质的提升。不同缓控释肥对高温下不同品种白垩发生的影响不一致,腐殖酸包膜缓释肥加重了高温下Y两优911的垩白,降低了桃优香占的垩白。但缓控释肥在高温下对稻米食味品质影响总体不显著。

关键词：缓控释肥播期粒位稻米品质淀粉糊化特性

Molecular Dynamics Simulations of Displacement Cascade in Ni-Based Concentrated Solid Solution Alloys

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Acta Mechanica Solida Sinica 2024年第1期37卷 82-89页

作者： Chaoquan Zhao Rongxuan Xie Chuanlong Xu Xiaobao tian Qingyuan Wang wentao Jiang Haidong Fan Department of Mechanics Sichuan UniversityChengdu 610065China

Single-phase concentrated solid solution alloys(SP-CSAs),including high-entropy alloys,have received extensive attention due to their excellent irradiation *** this work,displacement cascade simulations are conducted using the molecular dynamics method to study the evolution of defects in Ni-based *** with pure Ni,the NiCr,NiCo,and NiCu alloys exhibit a larger number of Frankel pairs(FPs)in the thermal peak stage,but a smaller number of surviving ***,the NiFe alloy displays the opposite *** explain these different observations for NiFe and other alloys,the formation energy and migration energy of interstitials/vacancies are *** the NiFe alloy,both the formation energy and migration energy barrier are *** the other hand,in NiCr and other alloys,the formation energy of interstitials/vacancies is lower,as is the migration energy barrier of *** energy analysis agrees well with previous *** present work provides new insights into the mechanism behind the irradiation resistance of binary Ni-based SP-CSAs.

关键词： Molecular dynamics simulation Displacement cascade Point defect Ni-based concentrated solid solution alloys

Pre-mating nitenpyram exposure in male mice leads to depression-like behavior in offspring by affecting tryptophan metabolism in gut microbiota

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Journal of Environmental Sciences 2024年第3期137卷 120-130页

作者： Sen Yan Wei Sun Sinuo tian Zhiyuan Meng Jinling Diao Zhiqiang Zhou Li Li wentao Zhu Innovation Center of Pesticide Research Department of Applied ChemistryCollege of ScienceChina Agricultural UniversityBeijing 100193China College of Plant Protection/Joint International Research Laboratory of Agriculture&Agri-Product Safety Yangzhou UniversityYangzhou 225009China College of Plant Protection Shanxi Agricultural UniversityTaiyuan 030031China

Several studies have confirmed that the health status of the paternal affects the health of the offspring,however,it remains unknown whether paternal exposure to pesticides affect the offspring ***,we used untargeted metabolomics and 16S rRNA sequencing technology,combined with tail suspension test and RT-qPCR to explore the effects of paternal exposure to nitenpyram on the neurotoxicity of *** results found that the paternal exposure to nitenpyram led to the offspring’s depressive-like behaviors,accompanied by the reduction of tryptophan content and the disorder of microbial abundance in the gut of the ***,we determined the expression of tryptophan metabolism-related genes tryptophanase(tnaA)and tryptophan hydroxylase 1(TpH1)in gut bacteria and colonic *** found that tryptophan is metabolized to indoles rather than being absorbed into colonocytes,which coursed the reduce of tryptophan availability after nitenpyram *** conclusion,our study deepens our understanding of the intergenerational toxic effects of pesticides.

关键词： Nitenpyram Depressive-like behaviors Gut microbiota Tryptophan metabolism

Product Knowledge Representation and Integration Technology in Web-based Collaborative Design

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武汉理工大学学报 2006年第S1期28卷 220-227页

作者： HAO wentao,tian Ling,LUO Wei,TONG Bingshu (Department of Precision Instruments and Mechanology,Tsinghua University,Beijing 100084,China) Department of Precision Instruments and Mechanology Tsinghua UniversityBeijing 100084China

Because of the complexity of modern product design,the web-based collaborative product design aroused considerable attention of manufacturers in the last few years with the development of Internet technology. But it is still hardly achievable due to the difficulty to share product knowledge from different designers and systems. In this paper,we firstly create an ontology-based product model,which consists of PPR (Product,Process and Resource) concept models and PPR characteristic models,to describe product knowledge. Afterwards,how to represent the model in XML is discussed in detail. Then the mechanism of product knowledge collection and integration from different application systems based on interface agents is introduced. At last,a web-based open-architecture product knowledge integrating and sharing prototype system AD-HUB is developed. An example is also given and it shows that the theory discussed in this paper is efficient to represent and integrate product knowledge in web-based collaborative design processes.

关键词： collaborative design knowledge representation ontology interface agent

Gga-miRNA-181-5p family facilitates chicken myogenesis via targeting TGFBR1 to block TGF-βsignaling

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Journal of Integrative Agriculture 2024年第8期23卷 2764-2777页

作者： Xiaoxu Shen Yongtong tian wentao He Can He Shunshun Han Yao Han Lu Xia Bo Tan Menggen Ma Houyang Kang Jie Yu Qing Zhu Huadong Yin Key Laboratory of Livestock and Poultry Multi-omics Ministry of Agriculture and Rural AffairsCollege of Animal Science and TechnologySichuan Agricultural UniversityChengdu 611130China Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province Sichuan Agricultural UniversityChengdu 611130China College of Forestry Sichuan Agricultural UniversityChengdu 611130China College of Resources Sichuan Agricultural UniversityChengdu 611130China Triticeae Research Institute Sichuan Agricultural UniversityChengdu 611130China Key Laboratory for Animal Disease Resistance Nutrition of China Institute of Animal NutritionMinistry of Education/Sichuan Agricultural UniversityChengdu 611130China

MicroRNAs(miRNAs)have been demonstrated to control chicken skeletal muscle growth,however,the potential function of the miR-181-5p family in chicken myogenesis remains largely ***,our study identified the two chicken(Gallus gallus;Gga)miR-181-5p family members widely expressed in various tissues,specifically miR-181a-5p and ***,the breast muscles of fast-growing broilers expressed higher levels of miR-181a-5p and miR-181b-5p than those of slow-growing ***,miR-181a-5p and miR-181b-5p both promote the expression level of myogenic factors including myogenin(MyoG),myogenic differentiation 1(MyoD1),and myosin heavy chain(MyHC),meanwhile accelerating the myotube formation of skeletal muscle satellite cells(SMSCs).Mechanistically,miR-181a-5p and miR-181b-5p directly bind to the 3′untranslated region(UTR)of the transforming growth factor beta receptor 1(TGFBR1)mRNA,further reducing the expression of ***1 is a key Transforming growth factor beta(TGF-β)signaling transduction receptor and had a negative function in muscle cell ***,knockdown of TGFBR1 facilitated the expression of chicken myogenic factors,boosted myotube formation,and decreased the SMAD family member 2/3(SMAD2/3)phosphorylation in chicken ***2/3 are downstream of TGF-βsignaling,and miR-181a-5p and miR-181b-5p could reduce the expression of TGFBR1 to further diminish the SMAD2/3 *** findings revealed that the miR-181-5p family targets TGFBR1 to break the TGF-βsignaling transduction,which resulted in promoting chicken skeletal muscle development.

关键词： miRNA-181-5p family SMSCs differentiation TGFBR1 TGF-βsignaling