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1.
There has been a shift in college classrooms from students recording lecture notes using a longhand pencil-paper medium to using laptops. The present study investigated whether note-taking medium (laptop, longhand) influenced note taking and achievement when notes were recorded but not reviewed (note taking’s process function) and when notes were recorded and reviewed (note taking’s product function). One unique aspect of the study was determining how laptop and longhand note taking influence the recording of lecture images in notes and image-related achievement. Note-taking results showed that laptop note takers recorded more notes (idea units and words) and more verbatim lecture strings than did longhand note takers who, in turn, recorded more visual notes (signals and images) than did laptop note takers. Achievement results showed that when taking laptop notes, the process function of note taking was more beneficial than the product function of note taking (i.e., better image-related learning and similar text-related learning). When taking longhand notes, the product function of note taking was more beneficial than the process function of note taking (i.e., better text-related learning and similar image-related learning). Achievement findings suggest that the optimal note-taking medium depends on the nature of the lecture and whether notes are reviewed.  相似文献   
2.
Accumulating evidence indicates the critical importance of cerebrovascular dysfunction in the pathogenesis of Alzheimer''s disease (AD). However, systematic comparative studies on the precise brain vasculature of wild-type and AD model mice are still rare. Using an image-optimization method for analysing Micro-Optical Sectioning Tomography (MOST) data, we generated cross-scale whole-brain 3D atlases that cover the entire vascular system from large vessels down to smallest capillaries at submicron resolution, for both wild-type mice and a transgenic (APP/PS1) mouse model of AD. In addition to distinct vascular patterns in different brain regions, we found that the main vessels of the molecular layer of the hippocampal dentate gyrus (DG-ml) undergo abrupt changes in both diameter and branch angle, spreading a unique comb-like pattern of capillaries. By using a quantitative analysis workflow, we identified in the hippocampus of AD mice an overall reduction of the mean vascular diameter, volume fraction and branch angle, with most significant impairment in the DG-ml. In addition, virtual endoscopy revealed irregular morphological features in the vessel lumen of the AD mice, potentially contributing to the impairment of blood flow. Our results demonstrate the capability of high-resolution cross-scale evaluation of brain vasculature and underscore the importance of studying hippocampal microcirculation for understanding AD pathogenesis.  相似文献   
3.
本文将教师阻抗定义为由于自身或外界因素导致教师对现有体育教学改革表现出的不满、反对、甚至抵制心理和行为。研究以教师阻抗为问题切入点,重点探究教师阻抗的内在原因。具体分析内容包括:现有体育教学改革实施现状、体育教师态度真相、冷落改革,阻抗缘由,并结合阻抗缘由提供相关消解建议。本研究主要以现象学研究方法作为方法论基础,由悬置与还原、体验与描述、反思与归纳、本质的呈现作为重点环节,参照Pollio的现象学研究方法流程,采用深度访谈,访谈对象20人,每轮访谈结束后及时将访谈录音转录为文本形式,访谈文本132571字。对访谈文本采取归纳与演绎相结合的形式,精简提炼并进行具体论证分析。结论:(1)高职院校体育改革情况并不理想,阻抗现象真实存在;(2)体育教师内心支持改革,主观排斥现象罕见,阻抗现象另有他因;(3)体育教师阻抗主要由于教师对公共体育课程教学指导纲要无从下手,各校围绕体育教学改革中需要变更新的大纲、教学方法、评价方式等工作茫然无措所导致。以此建议多安排一线教师参加培训学习;制定更为客观、易操作的教学方法和评价方式应用于高职院校体育教学一线;增大资金及人力投入;提高教师文化自信等方面,消除改革中出现的部分教师阻抗,也为高职体育改革提出一些思路。  相似文献   
4.
ABSTRACT

The aim of this study was to assess if tactical and technical performance indicators (PIs) could be used in combination to model match outcomes in Australian Football (AF). A database of 101 technical PIs and 14 tactical PIs from every match in the 2009–2016 Australian Football League (AFL) seasons was merged. Two outcome measures Win-loss and Score margin were used as dependent variables. The top 45 ranked technical and tactical PIs from a feature selection process were used to model match outcome using decision tree and Generalised Linear Models (GLMs). Of the top 45 selected features, this included seven tactical PIs. The Win-loss-based Decision tree model achieved a classification accuracy of 89.0% and GLM 93.2%. A Score margin-based GLM achieved a root mean squared error (RMSE) of 6.9 points. A combined approach to the classification of match outcomes provided no improvement in model accuracy compared with previous literature. However, this study has established the relative importance of technical and tactical measures of performance in relation to successful team performance in AF.  相似文献   
5.
In this paper, we mainly concentrate on the control issue of a variable length drilling riser under condition of unknown disturbances and output constraint. The studied flexible drilling riser system with variable length, variable tension, variable speed and restricted boundary output is essentially a nonlinear distributed parameter system. For achieving the vibration suppression and ensuring the boundary output within the constrained range, an appropriate control scheme with output signal barrier is put forward by integrating boundary control method, barrier Lyapunov function with finite-dimensional backstepping technique, where disturbance observer is employed for coping with the boundary disturbance. Moreover, the Lyapunov’s synthetic method is applied for the steadiness research of the studied flexible drilling riser system, and the simulations are presented to display the usefulness of proposed control scheme.  相似文献   
6.
[目的/意义]研究时间因素对专利被引频次的影响,可以减少时间因素对技术评价活动的制约,提高评价的准确性和可信度。[方法/过程]采集1975-2017年的美国专利数据,开展基于固定效应法的专利被引频次的修正研究。将专利按照不同公开年份和不同技术领域分组,选定组内均值和6个TOP分位数为被引频次基准,统计当前时间点的被引频次基准线及基准线的历史时序变化情况。建立神经网络模型,拟合基准线的时序变化规律,并预测未来统计时间点的基准线。[结果/结论]专利公开年份和统计年份的时间差异,使得专利被引频次无法直接进行比较。本文建立了基于不同技术领域、不同公开年份和不同统计年份的专利被引频次基准线,为专利评估提供参考。  相似文献   
7.
Environmental degradation has become one of the major obstacles to sustainable development and human well-being internationally. Scientific efforts are being made to understand the mechanism of environmental degradation and sustainability. Critical Zone (CZ) science and research on the multi-functional landscape are emerging fields in Earth science that can contribute to such scientific efforts. This paper reviews the progress, similarities and current status of these two scientific research fields, and identifies a number of opportunities for their synergistic integration through functional and multi-functional approaches, process-based monitoring, mechanistic analyses and dynamic modeling, global long-term and networked monitoring and systematic modeling supported by scaling and deep coupling. These approaches proposed in this paper have the potential to support sustainable human well-being by strengthening a functional orientation that consolidates multi-functional landscape research and CZ science. This is a key challenge for sustainable development and human well-being in the twenty-first century.  相似文献   
8.
借鉴ACSI顾客满意度测评指数模型,结合中国群众性马拉松赛事的特点,运用探索性因子分析法建立中国马拉松赛事参赛者满意度测评指标体系,基于此,构建中国马拉松赛事参赛者满意度测评指数模型。研究发现:中国马拉松赛事参赛者满意度测评指数模型的指标包括参赛者期望、硬服务质量感知、软服务质量感知、感知价值、参赛者满意度、参赛者抱怨、参赛者忠诚度7个因素。就各个自变量对中国马拉松赛事参赛者满意度的影响路径来看,参赛者对服务的预期通过对软服务质量感知、硬服务质量感知间接正向影响中国马拉松赛事参赛者满意度;参赛者的服务质量感知既直接又间接地正向影响参赛者的满意度,参赛者的软服务质量感知通过硬服务质量感知和感知价值间接正向影响参赛者的满意度,参赛者的硬服务质量感知通过感知价值间接正向影响参赛者的满意度。就各个自变量对中国马拉松赛事参赛者满意度的影响程度而言,参赛者的软服务质量感知对其满意度影响最大,其次依次为硬服务质量感知、服务期望和感知价值。  相似文献   
9.
新一轮工业革命的加速进行和新经济的快速发展, 迫使我国工程教育发生变革以适应 新挑战,新工科研究与建设应运而生。传统工科在专业设置的契合性、人才质量标准的针对性、专业 建设的开放性、课程体系的交叉复合性、教师教学实施的有效性、教学资源和保障条件的满足性等 方面, 都不能确保新工科人才培养和满足新时代经济社会发展需要。根据新工科专业质量建设内 涵,尽快制定科学有效的新工科专业评估方案,为新工科专业建设提供切实有效质量保障成为当务之急。文章针对目前地方高校专业评估面临的问题,指出新工科背景下专业评估思路与目标,最后提出“评估+ 认证”模式的新工科专业评估方案。通过在地方本科高校进行初步实践,为新工科专业评估提供了有益的探索。  相似文献   
10.
代宝  罗蕊  续杨晓雪 《现代情报》2019,39(9):142-150
[目的/意义]把握国内外关于社交媒体倦怠的研究现状和发现可能的研究机会。[方法/过程]从社交媒体倦怠的含义、前因和后果三方面对相关文献予以系统分析。[结果/结论]社交媒体倦怠主要从情感体验、行为表现和两者的综合3个视角来定义;社交媒体倦怠的前因主要包括社交媒体相关因素(系统特征因素、信息特征因素)和用户相关因素(心理性因素、行为性因素和社会性因素);社交媒体倦怠的后果主要表现为影响用户的心理(不满意等)和行为(社交媒体不持续使用/转移行为、消极使用行为等)。  相似文献   
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