基于BlackBoard的金融工程混合教学模式研究

互联网技术催生的教学模式转变是当前高校教研教改研究的热点。本文基于BlackBoard教学平台探讨金融工程学混合教学模式。文章首先总结了金融工程传统教学模式的缺陷,基于此提出了该课程教学改革的必要性;其次考察了BlackBoard教学平台的特点;然后探讨了通过BlackBoard平台进行金融工程学教学改革的具体方案。结论表明,BlackBoard平台提供的全程跟踪和随时互动特性有利于提高金融工程学的教学效率。     

基于微课的大学日语翻转课堂教学模式研究

高校日语传统教学中以教师教授为主,存在学生日语操练不足、学习效果一般、积极性不高、个性化需求无法满足等问题。随着科技和信息技术的发展,新的教学理念和教学模式不断被提出和验证,为高校日语教学改革提供了新思路。作为全球教育界最为关注的两种教学模式,“翻转课堂”和“微课”已经取得了国内外较多的研究成果和教学效果。本文旨在研究在高校日语课程教学中采用基于微课的翻转课堂教学新模式。通过在教学改革中对新模式的应用,提高大学生日语学习的自主性和积极性,同时满足个性化学习需求和课程教改需求。     

关于中等职业学校数学课堂教学策略的探索与实践

在中职学校数学课堂教学中,合理有效的数学教学策略,包括根据不同专业需求灵活处理现有教材中的教学内容,合理有效的教学设计,适合学生的教学方法、途径与教学评价等。教学策略对优化课堂教学过程、培养学生的学习兴趣、提高课堂教学效率起着重要作用。     

新时代中国特色社会主义文化自信提升过程中的问题研究

“文化自信是更基础、更广泛、更深厚的自信”,能赐予新时代中国特色社会主义事业发展更基本、更深沉、更持久的动力。本文通过阐释新时代中国特色社会主义文化自信的多维内涵,梳理坚定新时代中国特色社会主义文化自信的重要意义,探寻提升新时代中国特色社会主义文化自信过程中存在的问题,希望能为提升文化自信做出些有益探索。     

Paving the road toward the use of β-Fe2O3 in solar water splitting: Raman identification,phase transformation and strategies for phase stabilization

Although β-Fe₂O₃ has a high theoretical solar-to-hydrogen efficiency because of its narrow band gap, the study of β-Fe₂O₃ photoanodes for water splitting is elusive as a result of their metastable nature. Raman identification of β-Fe₂O₃ is theoretically and experimentally investigated in this study for the first time, thus clarifying the debate about its Raman spectrum in the literature. Phase transformation of β-Fe₂O₃ to α-Fe₂O₃ was found to potentially take place under laser and electron irradiation as well as annealing. Herein, phase transformation of β-Fe₂O₃ to α-Fe₂O₃ was inhibited by introduction of Zr doping, and β-Fe₂O₃ was found to withstand a higher annealing temperature without any phase transformation. The solar water splitting photocurrent of the Zr-doped β-Fe₂O₃ photoanode was increased by 500% compared to that of the pure β-Fe₂O₃ photoanode. Additionally, Zr-doped β-Fe₂O₃ exhibited very good stability during the process of solar water splitting. These results indicate that by improving its thermal stability, metastable β-Fe₂O₃ film is a promising photoanode for solar water splitting.     

A highly alkaline-stable metal oxide@metal–organic framework composite for high-performance electrochemical energy storage

Most metal–organic frameworks (MOFs) hardly maintain their physical and chemical properties after exposure to alkaline aqueous solutions, thus precluding their use as potential electrode materials for electrochemical energy storage devices. Here, we present the design and synthesis of a highly alkaline-stable metal oxide@MOF composite, Co₃O₄ nanocube@Co-MOF (Co₃O₄@Co-MOF), via a controllable and facile one-pot hydrothermal method under highly alkaline conditions. The obtained composite possesses exceptional alkaline stability, retaining its original structure in 3.0 M KOH for at least 15 days. Benefitting from the exceptional alkaline stability, unique structure, and larger surface area, the Co₃O₄@Co-MOF composite shows a specific capacitance as high as 1020 F g⁻¹ at 0.5 A  g⁻¹ and a high cycling stability with only 3.3% decay after 5000 cycles at 5 A g⁻¹. The as-constructed solid-state flexible device exhibits a maximum energy density of 21.6 mWh cm⁻³.     

Electro-mechanically controlled assembly of reconfigurable 3D mesostructures and electronic devices based on dielectric elastomer platforms

The manufacture of 3D mesostructures is receiving rapidly increasing attention, because of the fundamental significance and practical applications across wide-ranging areas. The recently developed approach of buckling-guided assembly allows deterministic formation of complex 3D mesostructures in a broad set of functional materials, with feature sizes spanning nanoscale to centimeter-scale. Previous studies mostly exploited mechanically controlled assembly platforms using elastomer substrates, which limits the capabilities to achieve on-demand local assembly, and to reshape assembled mesostructures into distinct 3D configurations. This work introduces a set of design concepts and assembly strategies to utilize dielectric elastomer actuators as powerful platforms for the electro-mechanically controlled 3D assembly. Capabilities of sequential, local loading with desired strain distributions allow access to precisely tailored 3D mesostructures that can be reshaped into distinct geometries, as demonstrated by experimental and theoretical studies of ∼30 examples. A reconfigurable inductive–capacitive radio-frequency circuit consisting of morphable 3D capacitors serves as an application example.     

基于生态系统服务评估的农地生态补偿机制研究进展

为推进生态保护与修复,中共中央对生态补偿制度体系建设提出了新的指导意见,并在重点区域进行了实践。但是,生态系统服务空间供需错位导致参与主体不明确,生态补偿标准不统一阻碍机制的稳定运行,影响了生态补偿机制的实施效果。因此,本文剖析生态系统服务供给和需求的概念,总结二者的相互关系,分析生态系统服务流的定义和传递过程,介绍生态系统服务评估的主要建模方法,同时归纳农地生态补偿机制构建、补偿标准确定和参与主体识别的现状。在此基础上,指出生态系统服务评估的不足之处和未来方向,概括生态系统服务建模方法的发展趋势,为农地生态补偿机制的设计和改进提出可行的方向和思路。根据分析和梳理得出主要的研究进展为：①目前的生态系统服务评估侧重功能和潜力,忽视了生态系统服务传递的中间过程;②生态系统服务的建模方法不断被完善,技术门槛逐渐提高,并更加注重多元化、交叉学科的融合;③农地生态补偿机制的方案设计亟需结合生态系统服务的空间流动属性进行改进。因此,合理地改进农地生态补偿方案,可根据农地生态系统服务流的空间流量分布测度生态补偿标准,并通过识别生态系统服务效益的接收对象确定参与主体,从而建立农地生态补偿机制的运行平台。     

北京郊区参与型体育旅游资源时空演化特征及影响因素

体育旅游已成为中国当前体育产业转型升级和旅游消费的热点。为科学认识大都市周边体育旅游资源空间分布特征并优化资源开发布局,本文以北京郊区为案例地,在对参与型体育旅游资源（Participatory Sport Tourism Resources, PSTR）分类基础上,运用空间分析等方法,探讨了1998、2008和2018年参与型体育旅游资源的时空演化特征及影响因素。研究发现：①北京郊区参与型体育旅游资源分为休闲娱乐型、拓展运动型和刺激探险型3类;经统计,休闲娱乐型资源数量最多,刺激探险型资源数量最少但增速最快;就资源集聚度而言,刺激探险型>拓展运动型>休闲娱乐型。②北京郊区PSTR空间分布整体呈现“东南密、西北疏”的特征,且随距中心城区距离的增加,PSTR数量波状递减;1998、20008和2018年北京郊区PSTR分布由西北向东南演进,且趋向中心城区布局的特征越来越显著,PSTR集聚峰值区由距中心城区30~40 km逐步缩减至20~30 km;3类资源的时空演化格局存在显著差异。③北京郊区PSTR空间格局的形成受地形、水系、人口、交通、政策与规划等自然和人文因素的综合影响,在不同因素作用下3类资源呈现不同的空间分布规律。其中,交通是影响空间分布的基础性因素,政策与规划因素发挥着关键性引导作用,一定程度上塑造和强化了PSTR的空间格局。以上研究发现对进一步优化北京郊区体育旅游资源的开发和体育旅游产业的合理布局具有重要理论和实践意义。     

混合式教学在产学协同育人模式中的实践研究——以安徽师范大学ACCA方向班为例

ACCA认证资质近年越来越受到用人单位的关注与认可,在高校ACCA方向班的人才培养方案中,结合了ACCA认证考试课程和专业本科课程的教学内容,对提升国际化、综合型会计人才专业素养发挥了积极作用.以安徽师范大学产学合作育人模式下的会计学ACCA方向班为例,对混合式教学模式在高校ACCA专业的应用及推广进行实践研究,通过线...