The deterioration of physical and mechanical properties of rock and soil mass caused by fault fracture zone has a very important influence on the instability of rock slope.In order to help researchers understand the current research lev-el and progress in this field,so as to better grasp the research direction and research focus,by using the literature re-search method,the previous studies on the influence of faults on the stability and failure law of rock slopes are sorted out and summarized,the current research progress is pointed out from the perspectives of research content,research scope,research means,research objects,research working conditions,and research conclusions,and also the problems that need further research are analyzed.Due to the existence of these problems,the law of the influence of faults on the stability and failure mode of rock slopes has not been clearly understood,and further research is still needed.
"蛋白质"一直是高中生物学教学的难点.为解决传统蛋白质教学中照本宣科、图形视频限制思维、模型操作参与有限等问题,消除学生思维上对蛋白质结构产生的困扰,突破教学难点,将 Ras-Mol可视化软件引入高中生物学课堂,动态展示氨基酸和蛋白质的三维结构,让学生在人机互动过程中掌握氨基酸与蛋白质的结构,探究蛋白质结构与功能的多样性.RasMol 在教学中能激发学生学习兴趣并产生良好学习动机,实现人机交互,提升学习参与感,增强动手操作能力.教学实践证明,在蛋白质教学中运用RasMol能够显著提高学生成绩,实现"学生主体".
"四翼"不仅是评价学生素质高低的基本维度,也是评价高考试题质量优劣的基本指标.本文以"基础性、综合性、创新性、应用性"的视角,分析了核心素养的不同水平在"四翼"试题中的体现,结合基础性试题以概念体系夯实核心素养、综合性试题以能力表现体现核心素养、创新性试题以信息转化呈现核心素养、应用性试题以实际应用彰显核心素养的考查特点,提出"依据课程标准,把握生物学概念""建构知识框架,培养综合能力""丰富评价形式,激发创新思维""创设真实情境,引导理论联系实际"的建议,促进核心素养达成.
国家森林公园是我国生态文明建设的重要阵地,森林研学将成为国家森林公园发展的重要方向.研学旅行视角下,基于共生理论深入分析森林公园与研学旅行间的耦合机制,构建森林研学发展潜力评价模型,以大别山国家森林公园为例,采用模糊层析分析法测算其森林研学的发展潜力.研究发现:大别山国家森林公园森林研学为Ⅱ级开发潜力,评价层因子权重和得分排序一致,依次为:开发效益、森林资源价值、开发条件、开发价值.表明大别山国家森林公园具备较好的森林研学发展潜力,开发效益是森林研学发展的直接动力,优质资源是森林研学开发的潜在优势,开发条件是影响森林研学开发的制约因素.研究提出森林研学资源向森林研学课程转变、基础设施向研学基地转变、单一效益向综合效益转变的建议,为国家森林公园发展建设提供思路.
Aggregation-induced emission(AIE)materials have important application potential due to their excellent solid-state luminescence properties.Triphenylamine is a common building block for the synthesis of AIE molecules,in this work,a sample AIE-active triphenylamine derivative(DTO)was prepared by a one-step Friedel-Crafts acylation reaction.DTO shows bright orange-yellow fluorescence in the aggregated state,and can detect explosive DNT effectively.At the same time,its solid powder displays obvious mechanochromic properties.
本文阐明了高校实验技术队伍在培养理工科研究生创新能力过程中的角色定位与作用.探讨了理工科研究生创新能力训练过程中存在对实验技术队伍重视程度不够和实验技术队伍建设成效不足等问题.提出要多层面重视实验技术队伍建设,全方位提升实验技术队伍综合素质,多措施提高实验技术队伍境遇,多途径充实壮大实验技术队伍实力,让实验技术队伍积极融入研究生培养体系,不断完善以提升研究生培养质量,为研究生教学科研及"双一流"建设提供支撑.
问题解决教学是落实《义务教育数学课程标准(2022 年版)》提出的数学核心素养的有效路径.以初中数学"电话计费问题"教学为例,循着大师的足迹前行,设计了波利亚理论下课堂实施的四个环节:梳理条件、以图示意、理解题目;数据悟律、分解问题、拟定方案;构建方程、执行方案、得出结论;回顾反思、深化概念、发展能力.学生在有效的教学设计与实施中,学会用数学的眼光观察,用数学的头脑思考,用数学的语言表达,逐渐成长为能主动解决问题的高素养的人才,也揭示了遵循教育理论指导教学实践提升核心素养的有效策略.
Most of the existing automotive interaction interfaces are in line with the needs of middle-aged and young peo-ple,but have a low degree of aging adaptability.The auxiliary effect of this interface design on the elderly driving group is not obvious.In order to meet the safe travel needs of the elderly driving group,it is necessary to consider the driving needs of the elderly group,improve the visibility of the interaction interface information,strengthen the auxiliary func-tions of the interaction interface through multiple channels,reduce the physical load on the driver caused by using the in-teraction interface,and simplify the operation steps of the interaction interface,when designing an automotive aging friendly interaction interface based on service orientation.In this way,the interactive interface can be optimized from the aspects of function,language,vision and touch,so as to realize the multi-channel interaction between the elderly driving group and the vehicle system,so that they can feel the convenience,comfort and safety of driving in the intelligent era.
Dabie Mountain area of Huanggang is a treasure house of ecological resources in eastern Hubei Province,with unique and diverse geoheritage resources,which provides superior natural conditions for the development of geological tourism.SWOT analysis is used to systematically analyze the advantages,disadvantages,opportunities and threats of the protection,development and utilization of geoheritage resources in Dabie Mountain area of Huanggang.In order to realize the protection and sustainable development of geoheritage resources,the author puts forward some strategies,such as in-novating the ways of protection,development and utilization of geoheritage resources,implementing the popular science tourism mode integrating"industry-university-research-application"and building a multi-party shared and win-win com-munity.Based on this,it is proposed to take the lead in the pilot construction of geological cultural villages in Dabie Mountain area of Huanggang,play a leading role in demonstration,help rural industrial transformation and upgrading,and achieve green,low-carbon and high-quality development.
阅读是大学生成长、成才的重要途径.阅读推广是时代赋予高校图书馆的重要使命和责任.地方高校由于其属地管辖的地方性特征,使得其图书馆阅读推广工作比部属高校图书馆面临着更多的困境,如思想认识定位不明确;组织机构、人员编制不到位;阅读推广专项资金严重短缺;阅读推广工作主体力量整合缺失;阅读推广工作的规章制度建设、测评考核机制不健全等.为了切实解决地方高校图书馆开展阅读推广工作所面临的困境,从五个方面提出了相应的对策:构建完善的阅读推广工作机制;创新阅读推广活动形式;拓展阅读推广工作途径;丰富阅读推广工作主题和实施阅读学分制等.
我国乡村学校课后服务从政策制定、资源配置到学校实施,遵循城乡一体、均衡发展的目标准则.但"双减"政策实施近两年来,乡村学校课后服务实施与成效相比城市存在着明显差距.研究发现:乡村学校课后服务政策保障体系存在着主体责任不明确、内容供给不精准、经费来源不稳定、结果反馈不及时等问题,乡村学校持续推进"双减"阻力较大.因此,建立责任共担机制,明确主体责任分工;创设服务适配环境,提升内容供给准度;拓宽经费开源渠道,稳定经费保障水平;秉持持续改进理念,发挥结果导向效用,从而保障"双减"政策在乡村学校更好地实施和发展.
This paper synthesized a new Gd(Ⅲ)-Sr(Ⅱ) bimetallic complex using 4-chloro-2,6-pyridinedicarboxylic acid as a ligand and strontium chloride and gadolinium nitrate through solvent thermal synthesis.Through X-ray single crystal diffraction analysis,the molecular formula of the complex was determined to be[Gd2L8Sr5(CH3OH)2(H2O)8]·2H2O(Gd-Sr-1)(H2L=4-chloro-2,6-pyridinedicarboxylic acid),a three-dimensional network of metal organic framework com-plexes(MOFs).The structure and stability of the complex were characterized by X-ray powder diffraction,infrared spec-troscopy,and thermal analysis.Finally,the solid-state fluorescence properties of this complex were studied.
社会责任是高中生物学学科核心素养的重要内容,高中生对社会责任的认识相对薄弱,高中教师在培养学生社会责任素养方面缺乏系统思考,情境教学是培养学生社会责任素养的有效策略和手段.本文将《普通高中生物学课程标准(2017 年版 2020 年修订)》中对社会责任素养要求分为"关注社会、运用知识""关注生活、解决问题""关注生态、参与实践""关注生命健康、践行宣传"四个维度,通过选用科学历史、前沿科技、本土资源及教材内容等素材,创设适合的故事情境、实验情境、生活情境与问题情境等类型,促进课程标准中社会责任素养四维度要求的达成,可为高中生社会责任素养养成提供情境教学策略参考.
In order to study the mechanical properties of autoclaved ceramic lightweight aggregate concrete,the dry apparent den-sity,compressive strength,splitting tensile strength,and ultrasonic velocity of autoclaved lightweight aggregate concrete under different water cement ratios were studied.The results showed that the dry apparent density of autoclaved lightweight aggregate concrete ranged from 1855 to 1988 kg/m3,and the strength of autoclaved lightweight aggregate concrete at 1d,3d,and 7d was 37%～66%,73%～76%,and 84%～92%of the 28d strength,respectively.The splitting tensile strength meets the require-ments of structural concrete.The compressive strength of concrete at 1d,3d,and 7d has a good linear relationship with its 28d strength,and the splitting tensile strength at 28d has a good exponential relationship with its 28d compressive strength.The strength of concrete has a strong exponential relationship with the speed of ultrasonic velocity.The research results will provide technical support for the application of autoclaved ceramic granules in concrete.
虚拟现实技术以时空四维、实时交互、场景接入等特点,成为众多学科教学应用创新的重要方向.高中化学教学中存在一些难以用语言表达或现实无法实际观察、参与甚至是危险的情境,虚拟现实技术能将这些场景以虚拟仿真的方式在课堂教学中呈现,无论是增进学生身临其境之感受,还是提升课堂教学效果都具有积极的意义.本研究系统梳理了虚拟现实技术在中学化学教学课程中的必要性,针对中学化学教学特点和虚拟现实技术的应用情况,分析了虚拟现实技术在当下化学课堂教学中的问题,给出解决思路,并对合理利用虚拟现实技术提出了合理建议,以此确立虚拟现实技术在新时代中学化学教学中的辅助地位,为正确引导和规范虚拟现实技术的中学化学教学应用实践提供科学指导.
数学建模是六大数学学科核心素养之一,高中数学建模活动是培养学生数学建模素养的有效途径.针对如何对数学建模活动进行教学设计,培养高中生数学建模素养.本文依据发现和提出问题、建立和求解模型、检验和完善模型、分析和解决问题的四个数学建模素养表现构建教学设计框架,并将其应用于人教A版高中数学"指数函数的概念"的教学设计.提出的教学设计框架及应用于教学设计的策略,可为教师和学生在教和学的过程中提升数学建模素养提供参考.
在数字化转型背景下,教育部颁布的教学质量国家标准明确了高等院校在结合自身办学定位的前提下进行人才培养方案的修订,作为人才培养关键环节的实践教学,应积极思考构建适合的实践教学模式.本文以某地方应用型高校市场营销专业为例,分析数字化营销人才需求背景下专业实践教学现状,在《教育部工商管理类专业教学质量国家标准》的指导下,从实践教学培养目标、课程体系、教学条件与师资队伍、质量保障体系等角度构思"双元"模式的实践教学分段式人才培养方案.
课程思政是落实教育立德树人的重要途径.高中数学课程思政元素的挖掘、提炼分析及应用,是推进课程思政的关键环节,是凸显数学课程育人价值的内在要求.针对目前高中数学课程思政在教育实践中存在的问题,以人教A版普通高中数学教科书必修第一册第五章"三角函数"为例,从科学素养、辩证思维、数学审美、应用意识、民族自信、个性品质六个维度挖掘提炼其蕴含的思政元素,并从传扬数学之美、类比对象特性、追溯发展历程、延伸背景材料四个方面举例讨论高中数学课程思政的教学方法运用.教学启示为:有效挖掘思政元素是实施课程思政的重要环节,教师是实施课程思政的关键因素,课堂是实施课程思政的主阵地.
Smart window3s,as part of intelligent building,reduce energy consumption by reducing artificial lighting and heating/cooling needs on the one hand,and reduce glare and heat gain on the other hand,thus improving comfort and controlling privacy needs;realizing the dual benefits of"energy-saving"and"intelligence".This paper summarizes recent research advances in differ-ent types of smart window technologies(including thermochromic smart windows,electrochromic smart windows,photochromic smart windows,gasochromic smart windows,mechanochromic smart windows,and Magneto-optical smart windows),high-lighting their applications in terms of energy efficiency,indoor comfort,and environmental sustainability.Future research will continue to explore new materials,smarter control systems and a wider range of applications.
初中数学跨学科学习是为实现初中数学课程目标,运用以数学为主的多门学科知识或方法,解决现实世界中的实际问题,深化和拓展学生对数学学科知识与方法的理解和掌握的一种学习方式,应渗透在日常学习活动之中.文章在解读初中数学跨学科学习内涵的基础上,认为初中数学跨学科学习是科技发展的需要,是学生数学核心素养发展的重要载体,有助于学生理解数学本质,并从学习内容的设计、学习活动的组织、学习方式的选用以及学习评价的导向四个方面提出初中数学跨学科学习的策略.
