基于“三力”理论的高中Python编程教学中计算思维培养初探

随着信息技术的高速发展,计算思维作为人的新思维活动,成为解决问题的又一新途径,是社会公民必备的素养。陶行知先生倡导的“三力”理论中提出,生活力是基础,自动力是引导,创造力是关键。在教育领域内,对学生的计算思维仍处在不断摸索中,如何在基于“三力”理论的高中信息技术课堂中有效培养学生的计算思维值得探讨和思考。在基于“三力”理论的高中Python编程教学实践中培养学生的计算思维显得尤为重要。

基于AVC理论的南京桦墅村生产性景观评价模型的研究

为了促进我国乡村一二三产业的融合发展,对以农业为主导的乡村生产性景观进行合理有效的评价,是乡村景观设计策略的重要组成部分。文章基于AVC理论,从吸引力(Attraction)、生命力(Vitality)、承载力(Capacity)3方面,以层次分析法及专家咨询法选取了8个评价因素层、28个指标层,以定性与定量相结合的方法构建了综合评价模型,对南京桦墅村生产性景观进行评价。研究得出,桦墅村生产性景观综合分值为6.457,处于良好的发展阶段。其中承载力(6.401)>吸引力(5.829)>生命力(5.744),社会经济成为桦墅村生产性景观发展的限制因素。最后根据研究结果提出了生产性景观在生活空间的设施化、传统产业的景观化、生态空间的经济化等相关优化建议。

用生态学的观点指导居住小区规划

居住小区是人类社会发展的重要产物。随着过度建设 ,居住小区出现了诸多影响人类生活的问题。要解决这些问题 ,需要应用系统的生态学观点指导居住小区规划 ,提高居住小区生态系统自我调控能力。生态学理论对居住小区规划的作用表现在生态环境是小区规划的基础 ;提高生态系统自我调控能力是小区规划的重要依据 ;实现生态平衡是规划科学合理的标志。根据生态学理论 ,居住小区规划应遵循先行控制原则、体现人性原则、充分利用原则和动态稳定原则。

教师生活力评价撬动学校高质量发展

以落实立德树人为根本任务,以陶行知先生的“三力论”(生活力、自动力、创造力)为指导思想,重庆市合川区凉亭子小学结合学校文化传承和发展定位,提出“生活力教育”办学主题,构建了以学习力、创新力、领导力为核心的新“三力”理论模型;将“唤醒每一位师生生命活力,使生活更加润泽、丰富、强健”作为学校办学愿景;提炼出“品致正、行致知、学致活”的办学理念。同时,把教育评价改革和提高学校办学质量作为推动学校“生活力教育实践”的总牵引,建构了“教师生活力发展”评价体系,以此推动学校高质量发展。

Quantitative description of infrared radiation characteristics for solid materials subjected to external loading

Based on the thermodynamics theory and physical micro-properties of solid materials subjected to external loading at room temperature,a formula of calculating temperature difference of infrared radiation in terms of the sum of three principal strains was deduced to quantitatively investigate the infrared radiation characteristics in test. Two typical specimens,the three-point bending beam and the disc pressed in diameter,were tested and their principal strains were calculated by finite element method in order to obtain the temperature differences of infrared radiation. Numerical results are in a good agreement with test results,which verifies the validity of the formula of calculating temperature differences of infrared radiation and the model of quantitatively describing the infrared radiation characteristics of solid materials,and reveals the corresponding inner physical mechanism.

Number Concentration of Cylindrical Particles in a Fluidized Bed

In this study, a three-dimensional model based on RANS, slender-body theory and Newton-Euler dynamics is established to study the number concentration, one of the most important fluidization characteristics of cylindrical particles. Also, the effects of interaction between cylindrical particles are taken into account by introducing the rigid collision dynamics. To validate the model, the fluidization experiments of cylindrical particles in a cold-state fluidized bed are carried out. The number concentration characteristics of cylindrical particles are obtained from computational fluid dynamics (CFD) simulation. It is found that cylindrical particles arriving at the exit of the riser the earliest come from the near-wall regions, the horizontal transfer of so many cylindrical particles from the radial centre regions to the near-wall regions is evident. Meanwhile, there is no distinct relationship between the number concentration and inlet wind velocity.

Tripartite Nonlinear Entangled State Representations in Quantum Mechanics

Based on the technique of integral within an ordered product of nonlinear bosonic operators we construct a kind of tripartite nonlinear entangled states, which can make up a complete set. As its application, we also derive nonlinear 3-mode charge-related entangled state. The essential point for constructing these states lies in choosing the appropriate charge operator.

Imitation of Fabric Flagging Based on Amplitude Modulation

A model-independent 3-D texture synthesis of physical and stochastic algorithms,based on an amplitude modulation method,is presented to realize 3-D fabric dynamic simulation.The physical functions are built to simulate fabric basic deformation.The stochastic functions,generated by Perlin noise,are used to simulate fabric natural motion in the wind.The two kinds of functions are synthesized by method of amplitude modulation.As the arithmetic uses stochastic functions in stead of recursive algorithm,it is capable of simulating the fabric material,the wind force and direction in real-time.Given the fabric material and wind strength,the stochastic functions can be created to simulate fabric motion in the wind and this model can be adjusted by controlling some certain parameters to achieve a good simulation effect.This method is conceptually intuitive,computationally fast and efficient.Furthermore,the combination of fabric physical and statistic motion characteristics provides an attractive way to improve the display effect and rate.

Fluid solid coupling model based on endochronic damage for roller compacted concrete dam

According to the characteristics of thin-layer rolling and pouting construction technology and the complicated mechanical behavior of the roller compacted concrete dam （RCCD） construction interface, a constitutive model of endochronic damage was established based on the endochronic theory and damage mechanics. The proposed model abandons the traditional concept of elastic-plastic yield surface and can better reflect the real behavior of rolled control concrete. Basic equations were proposed for the fluid-solid coupling analysis, and the relationships among the corresponding key physical parameters were also put forward. One three-dimensional finite element method （FEM） program was obtained by studying the FEM type of the seepage-stress coupling intersection of the RCCD. The method was applied to an actual project, and the results show that the fluid-solid interaction influences dam deformation and dam abutment stability, which is in accordance with practice. Therefore, this model provides a new method for revealing the mechanical behavior of RCCD under the coupling field.

远程教育的宏观理论

本文在简述远程教育和开放学习这两个核心概念的基础上，探讨国内外远程教育研究工作者在建立远程教育的普遍理论体系、远程教育的发展动力基础理论、远程教育的工业化理论、三代信息技术和三代远程教育的理论等宏观理论方面的探索及其部分成果。这些理论体系既反映了对远程教育的内在本质和发展规律的认识，又总结得出了远程教育与其所处社会环境相互关系的某些规律性认识，为构建未来比较完整的远程教育宏观理论提供了有益的借鉴。