基于“金课”引领“学生为中心”的线上线下混融教学模式研究与实践——以“PLC控制设计”课程为例

高等教育领域要积极贯彻高质量发展的要求,切实提升课程质量则是核心环节,也是教书育人的主战场。文章选取机电类专业典型课程—“PLC控制设计”开展教学研究实践,基于“金课”标准、以“学生为中心”进行线上线下混融教学模式改革探索。从教学理念转变、教学设计创新等方面入手,打造游戏趣味课堂,运用探究式学习等积极学习策略,建立了基于学习成效的多元化激励性评价标准,以此进一步提高课程质量,切实提升学生的学习成效。研究实践取得了较好的效果,为相关课程改革提供了参考。

“师生双元互融”线上教学模式探究

线上教学受到教学条件等的客观限制,需要进行教学改革与创新。论文以学习金字塔理论作为研究理论基础,提出在进行市场营销学(双语)教学过程中,构建“师生双元互融”线上教学模式。学生作为一级教学主体实施教学,教师作为次级教学主体辅助教学,促使学生变被动学习为主动学习,实现教师、学生双元教学主体互相学习、互为补充,融合发展。实践表明,该模式能够取得较好的教学效果,学生满意度较高。最后,对该线上教学模式的实施进行了反思与总结。

“清洁生产与循环经济”线上线下混融教学改革

旨在全过程预防污染产生和减少资源能源消耗的清洁生产与循环经济是实现可持续发展的重要途径。通过研究选修课“清洁生产与循环经济”教学中存在的学时短、教学内容涉及面广和实践性强等问题与需求,对线上和线下混融式教学改革与实践进行了探索。充分利用网络教学资源,将慕课、网络教学视频和课堂PPT讲授融为一体,对教学内容优化整合,嵌入了丰富的行业生产实际典型案例;贯彻“以学生为中心、以教师为指导”理念,强化了教学过程的实施和管理,并对未来课程教学进行了展望。

后疫情时代两线混融教学的探索与思考

新冠肺炎疫情这一重大社会突发事件突如其来,在疫情基本控制的后疫情时代,线上教学模式何去何从问题亟待解决。在对后疫情时代线上教学与线下教学进行多方比较的基础上,点出后疫情时代高职院校两线融合教学存在的问题,并从三大方面有针对性、给出后疫情时代两线混融教学模式构建策略。

小学线上线下混融教学的问题探析及对策研究

线上线下混融教学,是“互联网+教育”时代的一种新型教学方式。但在实施过程中,一些地方存在线上学习学生参与度低、线下学习个性化难满足、“双线并行”却无交点等问题。要解决这些问题,教师需要提高对线上线下混融教学的科学认知;做好教学资源、人力的准备;有效运用线上线下混融教学的模式选择、资源整合、交往互动、情感交流、评价激励等策略,将线上教学与线下教学的理念、资源、场景、方式等要素充分融通整合,使线上教学与线下教学优势互补、混融共生,促进学生个性发展。

如何以“三融纬度”构筑受众基础——对党报融媒体新闻报道策划的思考

面对新竞争、新市场、新挑战,融媒体的“融”字成为新时代党报新闻策划最重要的体现。本文以镇江报业传媒集团金融融媒中心策划的“惠企纾困金融行”集中宣传报道为例,从“融实践、融线上、融热度”三个纬度详细分析了如何做好党报融媒体新闻报道的策划工作,为党报融媒体的发展提出了一些建议和意见。

“一核双线三融四化”的专创融合人才培养模式研究

将创业教育与专业教育相融合,是深化高等教育教学改革的重要路径。创业教育的开展离不开专业教育,而专业教育的发展必然要融入创业教育的理念和方法。基于此,提出“一核双线三融四化”的专创人才培养模式。以培育创新创业人才为核心,坚持立德树人根本任务,以创业教育和专业教育为双线,坚持两条线协同推进,加强师资队伍融合、课程体系融合、教学方法融合,实现“德、技、赛、研”的创新转化,实现培养创新型人才的教学目标。

“点全·线联·面融”式教材解读与实践思考--以“有理数的乘方”为例

教材解读为教学素材与素养目标之间勾画实践路径.教师可利用“点全·线联·面融”式的解读方法对教材进行单元整体分析及知识整合,让零散的知识变得立体有层次、系统有框架,帮助学生构建完整的知识体系,综合提高学生的数学素养.

“一核双线三融”:中职建筑装饰专业木工课程教学设计创新探索

“一核双线三融”是指基于新时代培育“鲁班工匠”的核心目标,融合思政、企业、信息三种元素,提升学生的操作技能和职业素养,培养符合建筑装饰行业需要的人才。本文提出了教学设计的创新思路,并以木工课程为例,阐述了实践方法和实施成效,以期为同类专业教学创新提供参考。

技工院校图书馆线上线下融合阅读推广创新研究

技工学院学生的阅读兴趣较低、阅读时间较短、阅读量较少、阅读质量较低,整体阅读效果较差。“互联网+”背景下,线上线下融合阅读推广是技工院校图书馆提高服务效能的重要渠道,基于融合阅读推广效果的关键影响因素,提出技工院校图书馆线上线下融合阅读推广的创新策略:完善图书馆线上线下服务系统平台;推进图书馆纸电一体化资源整合;促进图书馆资源精准化推送;提高学生的图书馆服务体验。

后疫情时代下高校“线上+线下”混融式教学的探索

新冠肺炎疫情期间,线上教学平台较多、功能完善,保障了高校教育教学的顺利进行。但是,线上教学的实践存在教师准备不充分、学生自我管理能力存在差异、在线教学平台技术不成熟等问题。在当前信息时代的大背景下“,互联网+教育”已成为高校教育教学改革的趋势,且传统的线下教学在教师示范作用、同伴关系及促进学生的社会性发展等方面具有不可替代性。因此,后疫情时代下,高校应积极探索“线上+线下”混融式教学形式,顺应时代发展,更新教育理念,重构教师专业发展内容,建立常态化的混融式教学形式,充分发挥“线上”与“线下”的教学优势,提高高校的教育教学质量。文章通过分析疫情期间线上教学的现状,探讨了高校推进“线上+线下”混融式教学的必然趋势,并提出了相应的策略。

数智时代应用型本科高校电子商务专业人才培养问题与对策研究

文章通过分析应用型本科高校电子商务专业人才培养过程中存在的主要问题,提出了电子商务专业“一体双线三层四融”人才培养对策,即“以强化应用型人才培养为核心,培养具备‘三商(智商、情商、数商)三创(创新、创意、创业)’能力的电子商务人才;以传授专业知识技能为明线,以训练可迁移能力为暗线;设计递进式数智化课程模块,区别化培养;‘课内模拟实验+课程练习企业任务植入+专业学科竞赛+综合实践真实化’四种方式有机融合”,以期探索出数智时代适用于应用型本科高校电子商务专业人才培养的实践路径。

高中数学“双线混融作业创新”的实践研究——以平面解析几何为例

本文旨在探讨高中数学线上线下作业混融的教学实践及其效果。通过对实验结果的分析,发现线上线下混融作业可以提高学生完成作业的积极性和学习效果,同时也可以促进教师对学生的学习情况进行监控和指导。本研究采用问卷调查和课堂观察等方法,对实验班级的学生和教师进行调查和观察。结果表明,线上线下混融作业可以有效提高学生的学习效果,同时也需要教师在教学实践中进行适当的调整和优化。

工业机器人换枪盘防护罩切换方式改造

随着汽车制造业在我国的高速发展,工业机器人自动化生产在国内的主机厂和零部件制造厂快速普及,但是由于汽车的更新换代非常快,无论是主机厂还是零部件配套厂都不可能针对每个车型建设单独的生产线,这就涉及到多车型、多品种进行融线生产的工艺,而工业机器人在高柔性融线生产中起着举足轻重的作用。由于很多共线生产的产品差异较大,单纯依靠机器人柔性运动无法做到全兼容,此时就需要增加机器人,但是增加机器人就意味着要扩大场地。为了最大程序地减少设备和场地的投入,在有限的空间内实现最高柔性的自动化,引入了机器人工具快换装置(以下称换枪盘)。本文通过对机器人换枪盘防护的常用方案进行升级,有限的空间内实现机器人自动切换防护罩,为其他生产线的相同工况在使用换枪盘时提供了更为优化便捷的选择。

Segmental radiofrequency ablation of pulmonary vein ostia for patients with refractory paroxysmal atrial fibrillation using multi-slice spiral computed tomography guidance

Objective： To evaluate the safety and clinical efficacy of segmental radiofrequency ablation of pulmonary vein （PV） ostia for patients with refractory paroxysmal atrial fibrillation （AF） under multi-slice spiral computed tomography （MSCT） guidance before the procedure. Methods： A series of 58 consecutive patients with refractory paroxysmal AF were enrolled to undergo segmental radiofrequency ablation ofPV ostia. The 36 male and 22 female patients with mean age of （57.4±9.5） （32-79） years and no obvious organic heart disease. Before ablation, patients received MSCT to generate 3-dimentional image of the left atrium （LA） and proximal PVs. Patients then underwent segmental radiofrequency ablation ofPV ostia using PV circular mapping catheter manipulated several times to ensure complete isolation between PVs and LA. Results： No complications occurred during the procedure. One patient developed delayed cardiac tamponade, which was drained percutaneously. The mean follow-up time was （17.1±9.3） months. Forty-one patients （95%） experienced improved quality of life one month after the procedure. Thirty-six patients （83%） showed stable sinus rhythm, while 10 patients （23%） required additional anti-arrhythmic drugs. AF returned≥1 time in 6 （14%） patients who underwent anti-arrhythmic drug therapy, but the number of episodes was less than that before the procedure. However, one patient experienced recurrent episodes of atrial flutter. Conclusion： It is safe and effective to perform segmental radiofrequency ablation of PV ostia for patients with refractory paroxysmal AF using MSCT guidance mappening.

RVFLN-based online adaptive semi-supervised learning algorithm with application to product quality estimation of industrial processes

Direct online measurement on product quality of industrial processes is difficult to be realized,which leads to a large number of unlabeled samples in modeling data.Therefore,it needs to employ semi-supervised learning(SSL)method to establish the soft sensor model of product quality.Considering the slow time-varying characteristic of industrial processes,the model parameters should be updated smoothly.According to this characteristic,this paper proposes an online adaptive semi-supervised learning algorithm based on random vector functional link network(RVFLN),denoted as OAS-RVFLN.By introducing a L2-fusion term that can be seen a weight deviation constraint,the proposed algorithm unifies the offline and online learning,and achieves smoothness of model parameter update.Empirical evaluations both on benchmark testing functions and datasets reveal that the proposed OAS-RVFLN can outperform the conventional methods in learning speed and accuracy.Finally,the OAS-RVFLN is applied to the coal dense medium separation process in coal industry to estimate the ash content of coal product,which further verifies its effectiveness and potential of industrial application.

Multi-voltage X-ray image sequence fusion based on selection of valid region

A key step is to extract valid information region in the fusion of multi-voltage X-ray image sequence for complicated components. To improve the self-adaption of extraction, a method is presented in this paper. In this paper, the valid informa-tion region is selected by the grey level interval, which is computed by the optimization of image quality evaluation model. The model is based on the histogram equalization and the grey level interval. Then, every valid region of images at different voltages is extracted and they are fused according their grey level transformation function. The fusion image contains completed struc-ture information of the component. The fusion experiment of a cylinder head shows the effectiveness of the presented method.

Effects of Concentration and Freeze-Thaw on the First Hydration Shell Structure of Zn^(2+) Ions

To investigate the effects of salt concentration and freeze-thaw (FT) on the first hydration shell of Zn2+ ions in Zn(NO_3)_2 aqueous solutions, extended X-ray absorption fine structure (EXAFS) spectroscopy was used to examine Zn K-edge EXAFS spectra of Zn(NO_3)_2 aqueous solutions with various concentrations before and after FT treatment. The influences of salt concentration and freeze-thaw on the structural parameters of the first hydration shell of Zn2+ ions, including hydration number, Zn-O distance and thermal disorder, were analyzed. The results show that Zn2+ ions have 3.2―6.8 nearest oxygen neighbors with the Zn-O distance being 0.202―0.207 nm. In highly concen-trated solutions, Zn2+ ions are hydrated with four water molecules in a tetrahedral form. The dilution of Zn(NO_3)_2 aqueous solutions increases the number of water molecules in the first hydration shell of Zn2+ ions to six with their octahedral arrangement. Both the hydration number in the first hydration shell of Zn2+ ions and the degree of thermal disorder increase when the FT treatment is operated in Zn(NO_3)_2 aqueous solutions.

PERFORMANCE EVALUATION OF SEVERAL FUSION APPROACHES FOR CCD/SAR IMAGES

Several image fusion approaches for CCD/SAR images are studied and the performance evaluation of these fusion approaches is completed in this paper. Firstly, the preprocessing of CCD/SAR images before fusion is fulfilled. Then, the image fusion methods including linear superposition, nonlinear operator method and multiresolution methods, of which the multiresolution methods include Laplacian pyramid, ratio pyramid, contrast pyramid, gradient pyramid, morphological pyramid and discrete wavelet transform, are adopted to fuse two types of images. Lastly, the four performance measures, standard deviation, entropy, cross entropy and spatial frequency, are calculated to compare the fusion results by different fusion approaches in this paper. Experimental results show that contrast pyramid, morphology pyramid and discrete wavelet transformation in multiresolution approaches are more suitable for CCD/SAR image fusion than other ones proposed in this paper and the objective performance evaluation of CCD/SAR image fusion approaches are effective.

Effectiveness of impedance monitoring during radiofrequency ablation for predicting popping

AIM： To retrospectively evaluate the effectiveness of impedance monitoring for predicting popping during radiofrequency ablation （RFA） using internally cooled electrodes. METHODS： We reviewed 140 patients （94 males, 46 females; age range 73.0 ＋ 11.1 year） who underwent RFA between February 2006 and November 2008 with a modified protocol using a limited power delivery rather than a conventional one to avoid popping. All the patients provided their written informed consent, and the study was approved by the institutional review board. Intraprocedural impedances were measured for the study subjects, and the tumors were classified into three types according to the characteristics of their impedance curves： increasing, flat, or decreasing. The tumors were further sorted into seven subtypes （A-G） depending on the curvature of the impedance curve＇ s increase or decrease. Relative popping rates were determined for the three types and seven subtypes. A chi-square test was performed to estimate statistical significance.RESULTS： A total of 148 nodules treated by RFA were analyzed. The study samples included 132 nodules of hepatocellular carcinoma, 14 nodules of metastatic liver cancer, and two nodules of intrahepatic cholangio- carcinoma. The numbers of nodules with each imped- ance curve type were as follows： 37 increasing-type nodules, 43 fiat-type nodules, and 68 decreasing-type nodules. Popping occurrence rates were 24.3%, 46.5% and 64.7%, respectively. Flat-type nodules exhibited a significantly higher rate of popping compared to increasing-type nodules （P = 0.039）. Decreasing-type nodules exhibited a significantly higher rate of popping compared to increasing-type nodules （P 〈 0.0001）. No- tably, nodules that showed a sharp decrease in imped- ance in the latter ablation period （subtype E） exhibited a significantly higher rate of popping compared to other subtypes. CONCLUSION： Intraprocedural impedance monitoring can be a useful tool to predict the occurrence of pop- ping during liver tumor RFA performed with internally cooled electrodes.