黄皮种子黄酮类化合物和多糖的提取与测定研究

自我调节学习是指学习者为了达到学习目标,主动在头脑中构建学习模式,并根据内外环境的变化不断地对先前的学习模式进行监控、调节的过程。影响自我调节学习的因素可以概括为个人、环境和行为3个方面。自我调节学习的策略涉及元认知、动机、情绪、行为、意志、环境等内容。未来的自我调节学习研究需要在理论、对象、方法、领域、跨文化研究及应用等方面进一步加强。     

浅论网络环境下英语口语学习策略的培养

英语口语历来是中国大学生学习英语的一道难关。作为高校英语教师,除了更新自身的教学理念、学习运用先进的教学方法之外,还必须利用丰富的网络资源,加强对学生口语学习策略和方法的指导,帮助学生养成良好的口语学习习惯,使学生具备必要的自学能力,最终实现学生口语能力的飞跃。     

强化学习型匝道控制模型的研究

高速公路上的交通堵塞造成了道路利用效率低下,并伴随着能源消耗和环境污染问题,因此各种各样的高速公路控制方法应用于缓解交通堵塞。本文提出强化学习型匝道控制模型,该模型以交通流模拟为预测工具,以人工智能的强化学习为最优化选择模型,并具有一定的自主性、有记忆功能和性能反馈功能,且是一种动态的过程。应用JAVA针对不同的交通状态进行模拟再现,模拟结果表明匝道控制模型对于减少交通堵塞具有显著的效果。     

大学英语兴趣课堂的构建

学习兴趣是学生进行知识学习的重要动力,不仅适用于英语初学者,大学生学习英语的过程也是如此。在大学英语教学中,教师要通过兴趣教学,激发学生对英语的兴趣,使他们能在兴趣的引导下,轻松愉快地学习英语。因此,兴趣课堂的构建就变得相当重要。本文从教师态度对构建大学英语兴趣课堂的影响,了解学生,充分备课和师生互动,共建兴趣课堂几个方面做出论述。     

大学生学习动机的影响因素与提升对策研究

本文采用改编的大学生学习动机调查问卷,对河北工业大学173名大学生进行了有效调查。通过统计分析,得出了大学生学习动机由强到弱依次为：成绩目标型、报答型、求知型、就业与生活型、社会奉献型、消极回避型。消极回避型动机在性别、专业、年级上存在显著差异;成绩目标型动机在性别、是否为独生子女上存在显著差异;报答型动机在是否为独生子女上存在显著差异;求知型动机在不同家庭状况上存在显著差异。最后本文从教学方法和教学管理模式等方面提出了改进对策。     

Improving Risk Management: From Lame Excuses to Principled Practice

The three classic pillars of risk analysis are risk assessment (how big is the risk and how sure can we be?), risk management (what shall we do about it?), and risk communication (what shall we say about it, to whom, when, and how?). We propose two complements as important parts of these three bases: risk attribution (who or what addressable conditions actually caused an accident or loss?) and learning from experience about risk reduction (what works, and how well?). Failures in complex systems usually evoke blame, often with insufficient attention to root causes of failure, including some aspects of the situation, design decisions, or social norms and culture. Focusing on blame, however, can inhibit effective learning, instead eliciting excuses to deflect attention and perceived culpability. Productive understanding of what went wrong, and how to do better, thus requires moving past recrimination and excuses. This article identifies common blame‐shifting “lame excuses” for poor risk management. These generally contribute little to effective improvements and may leave real risks and preventable causes unaddressed. We propose principles from risk and decision sciences and organizational design to improve results. These start with organizational leadership. More specifically, they include: deliberate testing and learning—especially from near‐misses and accident precursors; careful causal analysis of accidents; risk quantification; candid expression of uncertainties about costs and benefits of risk‐reduction options; optimization of tradeoffs between gathering additional information and immediate action; promotion of safety culture; and mindful allocation of people, responsibilities, and resources to reduce risks. We propose that these principles provide sound foundations for improving successful risk management.     

No Mind Reading Necessary: Conducting Evidence-Based Electronic Resource Marketing and Outreach Using Marketing Research Assessment

Abstract

In her presentation entitled “No Mind Reading Necessary: Conducting Evidence-Based Electronic Resource Marketing and Outreach” at the North Carolina Serials Conference April 2019, Kate Hill discussed marketing research strategies and outreach tools used to increase online users’ access to electronic resources and primary resources. In an effort to connect users to seldom-used resources, Jackson Library collaborated with university partners to develop surveys to identify the information-seeking behavior of its users and apply the gathered marketing research to strategically plan outreach activities.     

机器学习视角下中国去产能产业的识别

随着中国环境压力的增加,政府提出了供给侧改革,去产能是改革的主要内容,但是由于产业特征的实时演变,需要对政策进行完善。文章运用模糊C均值算法和支持向量机算法分析现阶段需要进行去产能的产业,结果发现在现行去产能政策中大部分行业是需要去产能的,但煤炭开采和洗选业以及铁路、船舶、航空航天和其他运输设备制造业已不适合继续去产能,同时将化学原料和化学制品制造业加入去产能行列中。     

目标取向对员工创新行为的影响机制研究——基于隐性知识共享行为的视角

在目前中国经济创新驱动转型的时代,企业对员工个人创新行为的依赖度越来越高.文章基于11家企业184名被试的问卷调查数据,采用结构方程分析方法,探索员工不同的目标取向通过隐性知识共享行为对创新行为的影响机制.研究结果表明,学习目标取向对隐性知识共享行为产生正向影响;绩效证明取向对隐性知识共享行为产生正向影响;绩效回避取向对隐性知识共享行为的影响效果不显著;同时,隐性知识共享行为对员工创新行为有显著影响,目标取向通过隐性知识共享行为对员工创新行为起间接作用.该研究结论进一步拓展了隐性知识共享行为在目标取向和员工创新行为中间接作用的研究领域,也为创新驱动型组织建设提供理论指导依据.