关于低值易耗品摊销等问题的探讨

根据会计学课程教学实践,就高等专科学校会计学教科书中有关低易耗品摊销等问题进行了探讨,提出了一些建设性看法。     

关于幂等矩阵乘积的迹的不等式

研究一些未必对称的矩阵乘积的迹的不等式,给出了关于幂等矩阵Bellman不等式成立的条件．     

关于辅助函数在不等式证明中的作用

通过研究函数曲线的性态与有关定理,找出了一些超越不等式的证明方法及其规律,文中列举了对不同形式的不等式,如何给出相应的辅助函数。     

“广义知识教学过程模型”下的高职英语教学研究

广义知识教学过程模型视教学过程为＂三阶段六步骤＂,缺少任何一步,学习或者不能发生,或者发生了但不能持久保持。本文作者在高职英语课堂教学上引入该模型,旨在探索广义知识教学过程模型能否指导高职英语教学。研究结果表明：广义知识教学过程模型能促进高职英语的教学成效。     

A relational vector space model using an advanced weighting scheme for image retrieval

In this paper, we lay out a relational approach for indexing and retrieving photographs from a collection. The increase of digital image acquisition devices, combined with the growth of the World Wide Web, requires the development of information retrieval (IR) models and systems that provide fast access to images searched by users in databases. The aim of our work is to develop an IR model suited to images, integrating rich semantics for representing this visual data and user queries, which can also be applied to large corpora.     

基于支持向量机的储层参数反演

支持向量机是基于统计学理论的一种新的数学方法,近几年得到了快速的发展,国内外已将其应用到各个领域。该文应用支持向量回归机的方法,用测井数据、地震属性数据对储集层的储层参数进行了预测,得到了精度较高的储层参数;并通过对实验结果的分析,说明了这种方法的优势。     

文本分类C#实现*

设计并实现一个基于向量空间模型和简单贝叶斯的文本分类系统,系统采用层级多标签的分类策略。详细介绍词语切分统计、终分类器值计算、层级小类校正和兼类判断四个子系统模块。基于向量空间模型分类的第一级大类和层级小类的微平均分别为89.7%和77.8%,简单贝叶斯分别为67.6%和66.5%。     

Intersecting barriers to adolescents’ educational access during COVID-19: Exploring the role of gender,disability and poverty

This article explores the social determinants of adolescents’ access to education during the COVID-19 pandemic in three diverse urban contexts in Bangladesh, Ethiopia and Jordan. It provides novel empirical data from the Gender and Adolescence: Global Evidence longitudinal study, drawing on phone surveys (4441), qualitative interviews with adolescents aged 12–19 years (500), and key informant interviews conducted between April and October 2020. Findings highlight that the pandemic is compounding pre-existing vulnerabilities to educational disadvantage, and that gender, poverty and disability are intersecting to deepen social inequalities. The paper concludes by reflecting on policy implications for inclusive distance education in emergencies.     

火电厂烟气量在线软测量系统研究

针对火电厂锅炉烟气流量的在线监测问题,提出了一种基于支持向量机的在线软测量方法,并对软硬件系统进行了设计.