The Advantages and Disadvantages of the Usage of Multi-media College English Teaching

In English teachinig,the use of multi-media makes a vivid learning atmosphere for students.It can get a better teaching effect in all-around education.Meanwhile,thereare some problems inevitably in this field,leaving for the English teachers to solve.

College English teaching aided by multi-media

College English listening teaching plays an essential role in college English teaching. Although traditional listening teaching is quite helpful in improving listening, its disadvantages in teaching are obvious. With the development of the multi-media, more and more disadvantages are popping up in the radio-oriented language lab teaching. College English listening teaching is a must since it can arouse students＇ interest in learning English and also a great improvement in English teaching.

Probes Into Application of Multi-media Technology in Teaching Chinese as the Second Language Acquisition Class

The multi-media teaching method refers to using computer as a teaching assistant in the teaching Chinese as the second language （TCSL） class. The purpose of employing multi-media technology is to encourage students＇ class participation, giving them explicit and specific impression of abstract contents and cultivating their intuitive grasp of linguistic points. Based on the current study of usage of multi-media technology in class teaching, this paper attempts to investigate mainly on its positive influence of multi-media technology in teaching.

On the Multi-media Assisted Interpreting Teaching Strategies

This paper discusses the strengths of using the intemet and building corpus in interpretation teaching. The authors propose multi-media assisted interpretation teaching strategies such as building a small -sized controlled internal interpretation corpus, encouraging students to search information via the internet, and conducting teacher-student, student-student communication at all levels via E-mall, BBS, skype-in-English, audio/video conference and etc.

A Study on the Application of Modem Multi-media Technology to Physical Education

With theoretical research method and literature research method, the application of modem multi-media technology to Physical Education （PE） and the existing weaknesses are analyzed in this paper by comparing the modem and traditional PE modes. The modem multi-media technology features the integration of the audio and video technologies and the simultaneous use of eyes and hands, embodies the inherent inspiration for its simulation, feedback, games, etc., and emanates enormous appeal. Its dynamic integration with physical education brings about a brand-new education approach in the history of physical education reformation. It has been involving to be an important education approach for PE teachers. Nevertheless, there are still a lot of key and difficult points that are not easy for the students to grasp regarding the application of modem multi-media technology to the physical education; and the teachers are weak in this new education approach and their course preparations are of low quality. Therefore, more attention needs to be paid to the integration of the advantages of multi-media teaching and the peculiarities of physical education so that multi-media technology can be made the best use in physical education.

The New Development for Teaching Foreign Language-Combination of Traditional Teaching with Modern Multi-Media Methods

With the development of society and economy,more and more talents capable persons are badly needed in the world.Under the influence of traditional English teaching mode,most English learners can only read and write.They are usually called "deaf-mutes".Therefore,traditional English teaching mode isn't satisfied by the teachers and received greatly challenged.Due to applying multimedia to English teaching could create more authentic language environment for the learners,which enables them to communicate in English in real-life situations.At present,the multi-media approach is the most popular language teaching method in the world.The most effective way to develop the teaching is combine multimedia with the traditional methods.This is of special significance to English teaching and make the English teaching receiving the best effect.

Multi-Media Technology and Products in China

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The Utilization Methods of Multi-Media Technology in Higher VocationalEnglish Teaching

Not only does the multi-media technology in teaching help students arouse curiosity and draw their attention,but also it makes students enhance their language skills and master knowledge.It makes English teaching smooth.

Research on soil multi-media environmental pollution around a Pb-Zn mining and smelting plant in the karst area of Guangxi Zhuang Autonomous Region,Southwest China

The method of principal component analysis was applied to systematical research on the soil multi-media environment, including soil, surface water, ground water, waterbody sediment and agricultural crops, as well as pollution-inducing wastewater, mullock (or waste ore) and slag in the periphery of a large-sized Pb-Zn mining and smelting plant in a karst area of Guangxi Zhuang Autonomous Region. The results revealed that soils in the area studied have been heavily polluted by Cd, Zn, Pb and Hg, and the levels of these metals in the samples of agricultural crop greatly exceed the standards. The above-mentioned pollutants exist in all soil-multi-media environments. The mullock, slag, wastewater, surface water, ground water, soil, and agricultural crops constitute a composite ecological chain. Therefore, the improper disposal of mullock and slag, and the use of polluted wastewater for agricultural irrigation are the main causes of soil pollution. Heavy metals in the soil have three transition progresses: point (improved soil with slag, ground water inflow plot), linear (river transition) and non-point transition (regional pollution by slag) patterns, and the tailing yard is the most important locus for heavy metals to release into the environment.

多种混合式教学模式在临床实习教学中的应用

目的探讨以问题为导向的教学法(problem-based learning,PBL)、以临床案例为基础的教学法(case-based learning,CBL)结合情景体验多媒体多种混合模式教学方式在临床实习教学中的应用效果。方法2020年9月—2021年1月,选择佳木斯大学2016级临床本科实习生共80名,随机分成2组,每组40名。A组接受情景体验多媒体结合PBL、CBL教学模式,B组接受传统教学。2组学生经过4个月采用不同教学方法的学习后,进行了临床技能和临床理论以及病例分析能力的考核。随后,对考核成绩进行了统计学分析。结果A组临床技能+临床理论考核成绩高于B组,差异有统计学意义(P<0.001)。A组病例分析能力考核成绩优于B组,差异有统计学意义(P<0.001)。结论PBL教学法、CBL教学法结合情景体验多媒体多种混合模式教学模式可以提高临床实习学生的临床理论知识、临床技能成绩以及病例分析能力。

弹塑性多孔介质流固耦合新理论:混合耦合理论

在全球气候变化和双碳政策的大背景下,多孔介质中固体的变形和流体的输运问题变得尤为重要。然而,在多孔介质中建立流固耦合模型仍面临的挑战之一是需要考虑跨越宏观尺度到纳米尺度的耦合作用。本文利用基于非平衡热力学的混合耦合理论,提出了一个弹塑性多孔介质流固耦合新模型,在同一个理论框架内研究了弹性变形、塑性变形和液体渗流之间跨尺度的耦合,考虑了耗散过程中的熵产,并利用Helmholtz自由能连接宏观尺度上的力学变形和纳米尺度上的液体输运之间的相互作用。在应力-应变关系中采用了弹塑性刚度系数以反映塑性的影响。同时,经典的达西定律扩展为可考虑固体的塑性变形。通过与文献中模型的比较,验证了该模型的有效性。最后,数值分析表明在多孔介质的流固耦合中塑性变形具有比较显著的影响。

立德树人视域下多介质新形态教学资源建设——以数字图像处理技术课程为例

立德树人是高等教育改革的终极目标,而教学资源建设是系列教改的基础。在分析新工科教育与传统工科教育差异基础上,揭示多介质新形态教学资源建设需求,提出立德树人视域下的多介质新形态教学资源建设方法,包括以先进的学习理论为指导安排教材结构、体例;以立体化教材、公众号、小程序和抖音等新形态介质传递教学内容;以新知识新技术为牵引促进创新创业能力;以不同领域新应用实例夯实跨界综合能力;以文化自信、忧患意识等为牵引强化课程思政,实现多介质新形态教学资源建设。

基于多模态掩码Transformer网络的社会事件分类

多模态社会事件分类的关键是充分且准确地利用图像和文字2种模态的特征。然而,现有的大多数方法存在以下局限性:简单地将事件的图像特征和文本特征连接起来,不同模态之间存在不相关的上下文信息导致相互干扰。因此,仅仅考虑多模态数据模态间的关系是不够的,还要考虑模态之间不相关的上下文信息(即区域或单词)。为克服这些局限性,提出一种新颖的基于多模态掩码Transformer网络(MMTN)模型的社会事件分类方法。通过图-文编码网络来学习文本和图像的更好的表示。将获得的图像和文本表示输入多模态掩码Transformer网络来融合多模态信息,并通过计算多模态信息之间的相似性,对多模态信息的模态间的关系进行建模,掩盖模态之间的不相关上下文。在2个基准数据集上的大量实验表明:所提模型达到了最先进的性能。

地质灾害多源基础数据结构体系及应用

地质灾害基础数据具有多源性、异构性、多尺度等特点,大量的数据没有形成统一的管理模式,共享程度较低。当前普遍施行的地质灾害数据管理,采用的是从多角度、多层面、多空间等对地质灾害体及其孕育环境表达的多尺度数据集,因此各类数据的表达形式、数据精度、数据质量、时间表达等多方面存在着较大的差异性。构建了地质灾害多源异构数据集成方法体系,系统总结了数据的结构特征与管理方法,结合数据结构特征,使用PostgreSQL数据库管理属性数据,使用MongoDB数据库集群进行管理,使用GeoServer平台进行空间数据服务发布。研发地质灾害大数据ETL工具,集成数据库驱动、数据库适配器、数据模型等模块,实现对多源异构地质灾害大数据的有效管理。研发了一体化数据管理可视化平台,实现对各类数据进行统一管理与集成,为地质灾害基础数据的统一管理提供了综合数据平台,为地质灾害的防灾减灾、应急决策等提供数据和平台支撑。

基于COMSOL的纸浆模塑干燥模拟及验证

目的研究采用COMSOL Multiphysics模拟纸浆模塑干燥效率及厚度变化的可行性。方法基于多孔介质理论,应用有限元仿真软件COMSOL Multiphysics建立纸浆模塑干基含水率随时间变化的热湿、水分流动、非等温流动多物理场耦合模型,考虑干燥中含湿多孔介质的湿空气热对流及多孔基体的热传导,模拟在热板加热条件下纸浆模塑的干燥效率和厚度的变化,并与实验结果进行比较。结果模型内域探针所得模拟结果与实验结果具有良好的一致性,在干燥后期厚度预测误差范围为0.4%~7.7%,干燥效率预测差异值最低为4.3%。结论采用COMSOL Multiphysics模拟纸浆模塑干燥过程可行。

多源自媒体资源知识组织模型构建研究

[目的/意义]多源自媒体资源已成为获取信息的重要途径,其多源异构特性使有效知识组织面临挑战。鉴于当前缺乏统一的媒体资源元数据标准,本研究通过文本化、知识元抽取和语义关联等技术路径,旨在构建和实现针对多源自媒体资源的知识组织模型。[方法/过程]研究首先复用和自定义DC元数据,构建多源自媒体资源的元数据描述框架,并据此构建多源自媒体资源本体和语义网络。借助计算机算法实现多源自媒体资源的文本构建标准化,使知识组织研究可以深入到多源自媒体资源的具体内容中。此外,还实现了多源自媒体资源的命名实体、关键词和知识摘要的抽取,并设计了语义关联实验,以上研究都以B站、抖音、知乎等平台数据为基础。[结果/结论]通过算法在多源自媒体资源和给定虚拟馆藏资源进行关联,达成了虚拟馆藏资源到多源自媒体资源的语义关联映射,旨在发掘多源自媒体资源的多元价值,为图书馆的知识服务提供新思路。

基于L1范数自适应匹配滤波的重叠超声信号分离研究

在使用低频超声TOF技术对大厚度多层复合介质测厚时,超声反射回波之间容易出现有效回波和近表面干扰波重叠现象且难以分离,从而影响TOF的测量精度。针对此类问题,提出了基于L1范数的自适应匹配方法,基于时空域中近表面干扰表现出规律一致性,而有效回波则展现出推移特性的不同特征,在时空域对采集的超声阵列信号进行自适应匹配处理,实现有效回波和近表面干扰波的分离,从而增强有效回波的分辨率。仿真数据处理结果证明了所提方法的有效性,信噪比提高了3 dB。实验结果表明,该方法能高效解决重叠超声信号分离的问题,在固体火箭发动机测厚场景中展现出广阔的应用前景。

UASB-两级A/O-混凝工艺处理生猪养殖污水工程实例

针对某规模生猪养殖场污水成分复杂、污染物浓度高、可生化性较好等水质特征,设计采用预处理-UASB-两级A/O-混凝沉淀-多介质过滤-消毒组合工艺进行处理,介绍了工艺流程及主要设计参数,考察并分析了组合工艺对生猪养殖污水的处理效果。工程运行结果表明,该工艺处理效率高,出水稳定,主要污染物指标均达到GB 8978—1996《污水综合排放标准》中的一级标准,出水可用于农田灌溉。

基于多介质通信的井下电视技术研究

油水井因套管变形、破损造成油水井故障而停产,由此产生大量井下维修作业增加了企业运行成本。针对浅层油水井作业的需要,提出了基于光纤、无线WIFI等多介质通信的井下电视技术,以可见光视频勘察方式确定油水井落物及套管变形、破损情况,协助制定合理的作业措施。通过该井下电视系统可深入到人无法到达的油水井套管内进行视频勘察;复合式光缆连接视频前端与微型光纤收发器接收端光口、微型光纤收发器接收端电口和无线路由器连接,并与电池一起集成到绕线盘上,电池为系统提供电能,无线路由器提供WIFI网络可连接多台便携式计算机,为其提供视频访问通道。经过现场试验,证实了该井下电视技术的可行性和实用性,能够降低企业油水井运维成本,具有广阔的应用前景。

复合矿物介质动态去除重金属多污染物实验研究

本文针对广西某多金属矿山尾矿库渗滤液造成的地下水污染问题,以蛭石、十六烷基三甲基溴化铵(CTAB)改性蛭石及赤铁矿作为PRB复合介质材料,进行了动态去除水中多污染物Cu^(2+)、Zn^(2+)、Mn^(2+)、CrO_(4)^(2–)的实验,研究了三种介质材料的组装方式对多种污染物的去除行为。动态吸附实验表明,介质的不同组装方式会影响体系的p H值,及吸附柱对多污染物的去除效果。通过对反应前后矿物介质的物相、形貌等测试表征,讨论了矿物介质材料对污染物的去除机理。赤铁矿以表面吸附为主,蛭石、CTAB改性蛭石以离子交换为主,也存在表面吸附等过程。以上成果为复合矿物介质实际用于重金属污染地下水的原位修复奠定了重要基础。