Reform of the Teaching Model of Korean Intensive Reading Courses in Vocational High Schools in the Era of All-Media

The use of multimedia technology in the teaching process is the current mainstream trend in teaching development.The arrival of the all-media era is not only a huge challenge to the traditional teaching model,but also a huge opportunity for the reform of the teaching model.Combining traditional education models with modern scientific and technological means,and learning from each other’s strengths can stimulate students’subjective initiative in learning.On the other hand,it is also an important way for teachers to improve their teaching abilities.This article analyzes the opportunities brought by the all-media era to the reform of education models based on the teaching status and teaching difficulties of Korean intensive reading courses in vocational high schools,and proposes a teaching model reform strategy for Korean intensive reading courses in vocational high schools in the all-media era.

Modeling, Simulation and Optimization of a Whole Industrial Catalytic Naphtha Reforming Process on Aspen Plus Platform

A new 18-lump kinetic model for naphtha catalytic reforming reactions is discussed. By developing this model as a user module, a whole industrial continuous catalytic reforming process is simulated on Aspen plus plat-form. The technique utilizes the strong databases, complete sets of modules, and flexible simulation tools of the Aspen plus system and retains the characteristics of the proposed kinetic model. The calculated results are in fair agreement with the actual operating data. Based on the model of the whole reforming process, the process is opti-mized and the optimization results are tested in the actual industrial unit for about two months. The test shows that the process profit increases about 1000yuan·h-1 averagely, which is close to the calculated result.

Dynamic Modeling and Simulation of a Commercial Naphtha Catalytic Reforming Process

A first principles-based dynamic model for a continuous catalyst regeneration (CCR) platforming process, the UOP commercial naphtha catalytic reforming process, is developed in this paper. The lumping details of the naphtha feed and reaction scheme of the reaction model are given. The process model is composed of the reforming reaction model with catalyst deactivation, the furnace model and the separator model, which is capable of capturing the major dynamics that occurs in this process system. Dynamic simulations are performed based on Gear numerical algorithm and method of lines (MOL), a numerical technique dealing with partial differential equations (PDEs). The results of simulation are also presented. Dynamic responses caused by disturbances in the process system can be correctly predicted through simulations.

Kinetic model on coke oven gas with steam reforming

The effects of factors such as the molar ratio of H2O to CH4 (n(H2O)/n(CH4)), methane conversion temperature and time on methane conversion rate were investigated to build kinetic model for reforming of coke-oven gas with steam. The results of experiments show that the optimal conditions for methane conversion are that the molar ratio of H2O to CH4 varies from 1.1 to 1.3 and the conversion temperature varies from 1 223 to 1 273 K. The methane conversion rate is more than 95% when the molar ratio of H2O to CH4 is 1.2, the conversion temperature is above 1 223 K and the conversion time is longer than 0.75 s. Kinetic model of methane conversion was proposed. All results demonstrate that the calculated values by the kinetic model accord with the experimental data well, and the error is less than 1.5%.

A Lumping Kinetic Model for Catalytic Reforming

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One-dimensional Dynamic Modeling and Simulation of a Planar Direct Internal Reforming Solid Oxide Fuel Cell

This article aims to investigate the transient behavior of a planar direct internal reforming solid oxide fuel cell(DIR-SOFC) comprehensively.A one-dimensional dynamic model of a planar DIR-SOFC is first developed based on mass and energy balances,and electrochemical principles.Further,a solution strategy is presented to solve the model,and the International Energy Agency(IEA) benchmark test is used to validate the model.Then,through model-based simulations,the steady-state performance of a co-flow planar DIR-SOFC under specified initial operating conditions and its dynamic response to introduced operating parameter disturbances are studied.The dynamic responses of important SOFC variables,such as cell temperature,current density,and cell voltage are all investigated when the SOFC is subjected to the step-changes in various operating parameters including both the load current and the inlet fuel and air flow rates.The results indicate that the rapid dynamics of the current density and the cell voltage are mainly influenced by the gas composition,particularly the H2 molar fraction in anode gas channels,while their slow dynamics are both dominated by the SOLID(including the PEN and interconnects) temperature.As the load current increases,the SOLID temperature and the maximum SOLID temperature gradient both increase,and thereby,the cell breakdown is apt to occur because of excessive thermal stresses.Changing the inlet fuel flow rate might lead to the change in the anode gas composition and the consequent change in the current density distribution and cell voltage.The inlet air flow rate has a great impact on the cell temperature distribution along the cell,and thus,is a suitable manipulated variable to control the cell temperature.

Cooling of a Diesel Reformate Fuelled Solid Oxide Fuel Cell by Internal Reforming of Methane： A Modelling Study

In this paper a system combining a diesel reformer using catalytic partial oxidation (CPOX) with the Solid Oxide Fuel Cell (SOFC) for Auxiliary Power Unit (APU) applications is modeled with respect to the cooling effect provided by internal reforming of methane in anode gas channel. A model mixture consisting of 80% n-hexadecane and 20% 1-methylnaphthalin is used to simulate the commercial diesel. The modelling consists of several steps. First, equilibrium gas composition at the exit of CPOX reformer is modelled in terms oxygen to carbon (O/C) ratio, fuel utilization ratio and anode gas recirculation. Second, product composition, especially methane content, is determined for the methanation process at the operating temperatures ranging from 500 ℃ to 520 ℃. Finally, the cooling power provided by internal reforming of methane in SOFC fuel channel is calculated for two concepts to increase the methane content of the diesel reformate. The results show that the first concept, operating the diesel reformer at low O/C ratio and/or recirculation ratio, is not realizable due to high probability of coke formation, whereas the second concept, combining a methanation process with CPOX, can provide a significant cooling effect in addition to the conventional cooling concept which needs higher levels of excess air.

Teaching Reform and Practice in Engineering Drawing Based on 3D Modeling with Computer

Based on the necessity of three dimensional modeling with computer in teaching reform, this paper is the summarization of reform practice of teaching engineering drawing in our institute. The teaching reform begins with three dimensional modeling that used computer instead of board. On the basis of target of teaching reform, set of teaching content, arrangement of class hour and teaching method, the research of teaching practice have been done, and very good effects in teaching of engineering drawing have been achieved.

Modeling the kinetics of methane conversion in steam reforming process of coke-oven gas based on experimental data

Steam-reforming is an effective approach for upgrading methane and hydrocarbon of coke-oven gas into CO and H2, but the kinetic behavior needs more study. We investigated the conversion of methane in coke-oven gas by steam reforming process in an electric tubular flow at 14 kPa with temperature varying from 500 °C to 950 °C, and developed a kenetic model for , ignoring the effects of adsorption and diffusion. The optimal dynamic conditions for methane conversion 14 kPa are as follows:the ratio of the amount of water to the amount of methane is from 1.1 to 1.3;the reaction temperature is from 1 223 K to 1 273 K. The methane conversion rate is larger than 95% when the ratio of the amount of water to the amount of methane is 1.2 at a temperature above 1 223 K with the residence time up to 0.75 s.

Dynamic Model Study and Analysis of DME Auto-Thermal Steam Reforming Reaction

Through the study of the kinetics of dimethyl ether steam reforming reaction, a two-dimensional model of the reactor is established. At the same time, rate equations of simplified elementary reactions of DME steam reforming reaction are deduced by the mechanism of Langmuir-Hinshel-wood, and the rate constants are obtained by correcting the pre-exponential factor of Arrhenius equation. Finally, the analog data of DME steam reforming reaction under a variety of conditions are obtained, and making a simulation diagram. The two-dimensional model is substantially correct because of the analog data more in line with a variety of knowledge.

What Is the “China Model” of Financial Reform?

Based on a comparative study of China’s three-decade financial system reform and the financial reform model of Russia and selected Eastern European countries, we found noticeable discrepancies between China and other transitional countries in respect to objective setting, path and sequence selection, power sources and advancement strategy. We conclude that a "China model" of nancial system reform does exist. The formation and evolution of the "China model" is closely related to China’s special political and economic environment. More importantly, it is significantly influenced by China’s overall economic reform model as well.

新工科背景下融合“互联网+”模式的应用型人才培养改革

应用型人才教育必须在实践中进行,而学生也应该进行系统的知识学习与能力培养。该文为响应我国加快建设高水平应用型本科人才,以青岛理工大学信息与控制工程学院为试点,研究基于新工科背景下融合“互联网+”新模式的教学理念,充分利用“互联网+”模式对高校实践创新本科教学进行发展优化,培养出适应新工科发展变革下的创新应用人才,并形成了“一中心两融合三维度四平台”的本科应用型人才教育教学改革新模式。

基于互联网+构建药理学课程OTO混合式教学模式

互联网技术的迅速发展和普及,使得教学工作的形式、场所和对象都发生了巨大的改变。传统教学模式需适应技术的发展,进行整体变革与重构,才能克服发展与传统的矛盾掣肘。建立与“互联网+”背景相适应的教学机制,构建新型线上线下课堂教学体系是当今课堂教学改革的重要方向。文章基于教学实践,思考和讨论如何将互联网技术与传统课堂教育相融合,建立以互联网结合课堂的平台为依托,以学生能力培养为核心,符合我国国情,促进师生共同成长发展的药理学教学新模式。

《家畜环境卫生学》混合教学模式设计

混合教学模式可以发挥教师在教学过程中的主导作用,保证知识体系的系统性,可以培养学生的学习能力,提高教学质量。《家畜环境卫生学》是动物科学、动物医学专业重要的专业基础课。随着现代畜牧业的高速发展,该课程所涵盖的内容不断拓宽,使该课程的教学具有更多的可变性和挑战性。混合教学模式因其独特的优势而适合在《家畜环境卫生学》的教学中应用。为了保证教学效果,需要对线上线下时间、教学内容、教学方法、考核和管理等教学活动进行设计。

Kinetics modeling for the mixed reforming of methane over Ni-CeO_2/MgAl_2O_4 catalyst

Kinetics model was developed for the mixed （steam and dry） reforming of methane, which is useful for the control of H2/CO ratio. The equilibrium constants of reaction rate were determined using the experimental equilibrium data at different reaction temperatures, while the forward reaction rate constants were estimated using the experimental data under non-equilibrium （high inert fraction and high space velocity） conditions. The comparison between calculated and experimental data clearly showed that the developed model described satisfactorily, and further analysis using the parametric sensitivity determined the wall temperature and CO2 fraction in the feed gas as effective parameters for the manipulation of CH4 conversion and H2/CO ratio of synthesis gas under the equilibrium condition. Meanwhile, the inert fraction, rather than the residence time, was selected as additional parameter under non-equilibrium condition.

乡村振兴背景下西藏动物医学专业教育模式改革探索

[目的]为了推进动物医学专业改革,培养适应乡村振兴战略的应用型高级人才。[方法]分析本校动物医学专业教育存在的问题,寻找制约学生未来投身乡村振兴的症结,探索培养提升学生动手实践、理论联系西藏实际能力的方法。[结果]通过教育模式改革,增加了学生实践学时;降低了学生对实验动物的排斥心理;解决了学生实践机会较少的问题;使教学能够理论联系实践;解决了分散实习下教师不足的问题;部分弥补了试验动物较少的遗憾;打通了动物医学人才培养与乡村振兴的通道。[结论]通过多种手段的教学改革,能使动物医学专业的学生动手实践能力得到提升,能让学生发挥兽医专业技能、更好地服务于西藏乡村振兴。

以OBE为导向的多元教学模式在实验诊断学教学改革中的应用

目的 探究以成果导向教育(outcomes-based education,OBE)为基础的多元教学模式在实验诊断学教学中的应用效果。方法 2022年2—8月,选取河北大学2019级临床专业3班、4班学生作为研究对象,共计159名学生,将3班79名学生作为对照组,4班80名为试验组。对照组学生应用传统教学模式教学,试验组学生应用以OBE为导向的多元教学模式教学,比较两组学生的总成绩、笔试成绩、课堂提问+出勤成绩,并从多维度对教学满意度进行调查,对比分析两组学生的学习效果。结果 试验组总成绩、笔试成绩高于对照组,差异有统计学意义(P <0.05);两组课堂提问+出勤成绩比较,差异无统计学意义(P> 0.05)。试验组学生对教学的课程设计、教学方法、教学内容、学习兴趣、学习效率、检验报告解读能力、临床思维培养能力的满意度均高于照组,差异有统计学意义(P <0.05)。结论OBE导向的多元教学模式在实验诊断学教改中的应用提高了学生的学习能力、学习兴趣、团结合作和沟通能力,有助于培养适应医学发展所需要的具有创新能力的实用型医学人才。

基于OBE理念的工业设计校企协同育人模式研究

文章旨在探讨基于OBE理念的新型校企协同育人模式,目的是通过校企合作提升学生的工作与创新能力,并实现教育资源的配置优化。文章采用了理论研究分析与实证研究相结合的方法,结果显示该模式能显著提升学生的综合能力,满足社会经济发展的需求。为成功实施该模式,需要高校与企业之间建立稳定且高效的合作机制,优化课程体系,并采用多元化的评价方法。文章最后指出,未来研究应当探索优化操作模式,以促进高质量人才的培养,满足未来的发展需求。以期通过持续优化策略,校企协同育人模式能够长期成功地培养出高素质人才,以适应社会和经济的发展。

中学生物学教学论课程教学模式改革研究与实践——以德州学院为例

结合德州学院学生从业技能的培养、就业素质的提高、课程思政在培养师范生以及师范生将其融入教学实践三个方面,依托线上线下混合方式,通过重构课程内容体系、充分应用信息技术、创新高效教学方法、全过程多层次多维度评价等途径,构建了可复制、可推广的教学模式,取得了良好的教学效果,对师范类专业的学科教学论和专业课的教学具有参考价值.