电子商务中基于深度学习的虚假交易识别研究

为了解决电子商务平台中存在的虚假交易问题,本文依据商品的销售记录以及商家的基本信息,提出了一种结合深度置信网络和多层感知器的虚假交易识别方法,通过识别出以通过刷单增加销量的商品来识别虚假交易。首先利用深度置信网络对交易特征进行学习,得到更高层次的抽象特征;然后利用多层感知器进行分类任务,从而识别出虚假交易。从淘宝中爬取商品的交易记录和评论数据进行实验验证,与其他机器学习模型的实验结果进行对比,其性能有明显的提升。     

学习科学视角下促进大学数学深度学习的元认知训练模式研究

大学数学是大学中受众面非常广的一门公共基础课程,其核心是培养学生的逻辑思维、创造性思维、建模意识等高阶思维能力。深度学习的目标就是发展学习者的高阶思维能力,元认知能力是指个体对于自身认知过程的调节能力,很多研究者认为深度学习与元认知能力之间存在相互促进的关系。该文从学习科学视角将元认知训练与大学数学深度学习过程的一般模型相结合,以期通过提高大学生的元认知能力实现大学数学深度学习。     

产品设计课程教学实施过程的优化

要想将创新及其实现有效的落实在产品设计的课堂上,培养学生建立一种系统化的思维模式,必须做合理而又前瞻的设计。文章从调研、合作及创新三个方面阐述了产品设计课程教学实施的途径,以实现产品设计课程的教学目标。     

The Meaning of Surface Structure and Deep Structure to Translation

Surface structure and deep structure first come up with by Chomsky is an innovative action in linguistics. Despite the arguments involved around surface structure and deep structure, it is instructiona...     

基于生态理念的幼儿深度学习探究

在生态理念教育背景下,教师要关注幼儿有什么、能够做什么,然后把主动权交还给幼儿,让幼儿拥有自由支配和自由选择的权利,让幼儿能够在幼儿园这一特定的环境中自主地探索、操作、交往、合作、成长。文章从以生活为起点、确定活动主题,梳理幼儿经验、预设思维导图,合理利用资源、做好准备工作,开展正式制作、注重过程学习,立足幼儿生活,展开深度学习等五方面对基于生态理念的幼儿深度学习进行探索研究。     

狭长深基坑开挖引起的地表沉降变形及影响因素分析

狭长深基坑的开挖会对周边环境产生较大影响。鉴于此,文章基于有限元软件MIDAS GTS建立三维模型,重点分析基坑开挖过程中周围地表沉降的发展规律,并将数值模拟结果与施工现场监测数据进行对比,结果表明二者数据吻合良好。在此基础上对狭长深基坑开挖引起的地表沉降变形的影响因素进行分析,结果表明:基坑周围地表沉降值对基坑开挖深度敏感,且随着基坑开挖深度的增加而逐渐增大;地表最大沉降值出现在离墙后约8 m的位置,地表沉降的主要影响范围为0.5He~1.5He;增大地连墙厚度和嵌入深度、减小内支撑水平和竖向间距均使地表沉降值呈现减小趋势。     

主体论视域的深度学习内涵及策略冯铁山

学生“学得怎么样”是学科“教什么”和“怎么教”的根本目的与终极关怀, 学科教学需要重视学习主体的需要、教学意义的生成。从主体论视域审视,任何学科教学均有教材作者主体、教师主体、教材编辑主体以及学生主体之分。从尊重并发挥学生的主体性出发,深度学习是学生发挥主体性过程中与作者主体、教师主体、教材编辑主体构成主体间性关系而创造性运用语言文字等符号认识自然、社会、自我获得的归真、求善、至美情意的活动。其意义的生成自然也就是在与自然、社会、自我互动中达成认知、社会参与、自我发展的建构。     

深度校企合作视野下高职学生思想政治教育模式浅析

校企合作是高职教育发展的必然趋势,为适应校企深度合作的需要,必须对高职教育形式作出相应的调整,思想政治教育也不例外。分析了深度校企合作背景下高职思想政治教育发生的变化,包括教育者及受教育者的变化、教育方法及内容的变化、教育环境的变化;同时对深度校企合作视野下的高职学生思想政治教育模式进行了探讨。     

深基坑支护的工程实践应用分析

目前在建筑工程施工中,深基坑支护是其中一项重要部分,施工前应当根据现场情况合理选择支护方案,确保施工安全和质量,进而按照预定工期完工。本文主要阐述了深基坑支护方案的选择,并结合工程实例,针对深基坑支护施工技术进行探讨。     

Deformation mechanism of high-stress and broken-expansion surrounding rock and supporting optimization based on the gray correlation theory

Aiming at the large deformation and support problems of high-stress and broken-expansion surrounding rock, and taking 1 000 m level roadway of Mine II in Jinchuan as the research object, an investigation on the deformation and damage of roadway surrounding rock and an analysis of its mechanism were carried out. The gray correlation theory was used in support scheme optimization design. First, causes and mechanism of deformation of the 1 000 m horizontal transport channel were analyzed through field investigation, laboratory test and data processing methods. We arguued that poor engineering geological conditions and deep pressure increases were the main factors, and the deformation mechanism was mainly the ground deformation pressure. Second, the gray correlation theory was used to construct supporting optimization decision method in the deep roadway. This method more comprehensively considers various factors, including construction, costs, and supporting material functions. The combined support with pre-stressed anchor cables, shotcrete layer, bolt and metal net was put forward according to the actual roadway engineering characteristics. Finally, 4 support schemes were put forward for new roadways. The gray relational theory was applied to optimizing the supporting method, undertaking technical and economic comparison to obtain the correlation degree, and accordingly the schemes were evaluated. It was concluded as follows： the best was the flexible retaining scheme using the steel strand anchor; the second best was the one using plate anchors on the top and rigid common screw steel bolt on the two sides; the ttiird was; the rigid common screw steel bolt in full section of roadway; and the worst is the planished steel rigid support. The optimized scheme was applied to the 1000 m level of new excavation roadway. The results show that the roadway surrounding rock can reach a stable state after 5 to 6 months monitoring, with a convergence rate less than 1 mm/d.