基于若干教学理论的高职英语教学现状探究

随着招生规模的扩大,学生人数成倍增长,为了应对这一现状,高职英语教学只能进行合班式大班教学。然而,学生之间的层次悬殊,英语水平参差不齐,学校对他们却采取同样的教学模式。面对这种教学现状,文章基于对克拉申的i＋1理论、个体差异理论、因材施教理论、需求分析理论探究当前高职英语教学的弊端,提出＂新东方式＂分层教学模式。     

老子“无为”思想的“低碳”意蕴

当今社会科技高速发展,可是也带来了资源日益枯竭、生态环境逐渐恶化的后果。重新审视老子的＂无为＂思想,挖掘其内在的＂低碳＂意蕴,为低碳生活、低碳文化和低碳哲学提供传统文化的支撑。     

组建校本研究团队 促进中小学健康发展

为了消除传统工具性教育目的、行政化管理方式等消极因素的影响,开展优质、高效的基础教育,中小学有必要组建校本研究团队。我国中小学教师素质的不断提高、研究手段和技术的快速发展、管理决策层对研究的逐渐重视,以及专业研究与中小学教育实践联系的日益加强,为组建校本研究团队打下了坚实基础。校本研究团队的组建与工作的开展需要遵循一些基本原则,才能发挥校本研究团队促进学校健康发展的作用。     

师心论与唐音说的理论演进

师心论通过圆融处理物我关系,形成了物我双观、两忘与合一,成为盛唐诗歌基本的观照方式。而在此基础上所形成的“搜求于心”,成为中晚唐诗歌创新的出口,推动了险怪诗风的发展。晚唐“心师造化”基础上发展出来的活法为诗,成为宋调中的唐音论,被作为宋诗救弊的参照。     

在课堂教学中发展学生能力

新课改要求教师把课堂还给学生,让学生在教师指导下通过自主学习、合作探究的方式构建高效课堂。那么在课堂教学中如何发展学生能力呢?从发展学生创新思维、合作学习、语言表达能力等方面来阐述。     

关于校企合作共建实训基地的研究

目前我国高等工程实践教育理论脱离实际的现象比较严重,大部分高校存在实验室投入经费不足的情况,而校企合作共建实训基地可以有效地解决这个问题.在实施过程中要注意解决好几个存在的问题,以达到学校、企业和学生"三赢".     

“互联网+”视阈下高校政府采购信息化建设研究

互联网与高校政府采购工作的融合有利于采购便利化,降低采购成本,并实现阳光采购。高校采购过程中主要存在制度体系不完善,采购周期长、效率低,采购管理信息化程度不高,人员基础薄弱等问题,提出通过建立统一、完善的政府采购操作执行体系,统筹规划、做好顶层设计,构建统一的高校政府采购云服务平台,培养专业化政府采购人才队伍等方面着手加强“互联网+”时代高校政府采购建设。     

Olivine-norite rock detected by the lunar rover Yutu-2 likely crystallized from the SPA-impact melt pool

Chang’E-4 landed in the South Pole-Aitken (SPA) basin, providing a unique chance to probe the composition of the lunar interior. Its landing site is located on ejecta strips in Von Kármán crater that possibly originate from the neighboring Finsen crater. A surface rock and the lunar regolith at 10 sites along the rover Yutu-2 track were measured by the onboard Visible and Near-Infrared Imaging Spectrometer in the first three lunar days of mission operations. In situ spectra of the regolith have peak band positions at 1 and 2 μm, similar to the spectral data of Finsen ejecta from the Moon Mineralogy Mapper, which confirms that the regolith''s composition of the landing area is mostly similar to that of Finsen ejecta. The rock spectrum shows similar band peak positions, but stronger absorptions, suggesting relatively fresh exposure. The rock may consist of 38.1 ± 5.4% low-Ca pyroxene, 13.9 ± 5.1% olivine and 48.0 ± 3.1% plagioclase, referred to as olivine-norite. The plagioclase-abundant and olivine-poor modal composition of the rock is inconsistent with the origin of the mantle, but representative of the lunar lower crust. Alternatively, the rock crystallized from the impact-derived melt pool formed by the SPA-impact event via mixing the lunar crust and mantle materials. This scenario is consistent with fast-cooling thermal conditions of a shallow melt pool, indicated by the fine to medium-sized texture (<3 mm) of the rock and the SPA-impact melting model [Icarus 2012; 220: 730–43].     

Diagnosis of CO2 dynamics and fluxes in global coastal oceans

Global coastal oceans as a whole represent an important carbon sink but, due to high spatial–temporal variability, a mechanistic conceptualization of the coastal carbon cycle is still under development, hindering the modelling and inclusion of coastal carbon in Earth System Models. Although temperature is considered an important control of sea surface pCO₂, we show that the latitudinal distribution of global coastal surface pCO₂ does not match that of temperature, and its inter-seasonal changes are substantially regulated by non-thermal factors such as water mass mixing and net primary production. These processes operate in both ocean-dominated and river-dominated margins, with carbon and nutrients sourced from the open ocean and land, respectively. These can be conceptualized by a semi-analytical framework that assesses the consumption of dissolved inorganic carbon relative to nutrients, to determine how a coastal system is a CO₂ source or sink. The framework also finds utility in accounting for additional nutrients in organic forms and testing hypotheses such as using Redfield stoichiometry, and is therefore an essential step toward comprehensively understanding and modelling the role of the coastal ocean in the global carbon cycle.     

Encapsulating metal organic framework into hollow mesoporous carbon sphere as efficient oxygen bifunctional electrocatalyst

Applying metal organic frameworks (MOFs) in electrochemical systems is a currently emerging field owing to the rich metal nodes and highly specific surface area of MOFs. However, the problems for MOFs that need to be solved urgently are poor electrical conductivity and low ion transport. Here we present a facile in situ growth method for the rational synthesis of MOFs@hollow mesoporous carbon spheres (HMCS) yolk–shell-structured hybrid material for the first time. The size of the encapsulated Zeolitic Imidazolate Framework-67 (ZIF-67) is well controlled to 100 nm due to the spatial confinement effect of HMCS, and the electrical conductivity of ZIF-67 is also increased significantly. The ZIF@HMCS-25% hybrid material obtained exhibits a highly efficient oxygen reduction reaction activity with 0.823 V (vs. reversible hydrogen electrode) half-wave potential and an even higher kinetic current density (J_K = 13.8 mA cm⁻²) than commercial Pt/C. ZIF@HMCS-25% also displays excellent oxygen evolution reaction performance and the overpotential of ZIF@HMCS-25% at 10 mA cm⁻² is 407 mV. In addition, ZIF@HMCS-25% is further employed as an air electrode for a rechargeable Zn–air battery, exhibiting a high power density (120.2 mW cm⁻² at 171.4 mA cm⁻²) and long-term charge/discharge stability (80 h at 5 mA cm⁻²). This MOFs@HMCS yolk–shell design provides a versatile method for the application of MOFs as electrocatalysts directly.