求解开放性化学题的六种策略

1 准确回忆,逐一列举 这一类是指教材中研究的问题,在教材中可能集中在一起,也可能分散在不同的章节,有的有明确的说明,有的是以后逐步出现的,但通过归纳总结可形成完整的体系.求解时,只要准确回忆、逐一列举即可.     

化归思想及解题策略

用化归思想方法解决数学问题，是将问题变形，使其归结为另一已能解决的问题(即化未知为已知)，从而求得原问题的答案。对学生化归意识的培养，是提高学生解题能力的关键。     

数学问题解决的基本要素和策略研究

数学问题解决,是以思考为内涵,以问题目标为定向的心理活动及心理过程。数学问题的解决受到很多方面的影响,现就知识结构、技能因素和情感因素这三方面来谈它们对数学问题解决的影响并对其提出一些改进的策略.     

论英语课堂教学中的信息反馈问题和解决策略

本文对英语课堂教学中的信息反馈问题和解决策略进行了研究,教师信息反馈是课堂教学结构当中不可缺少的组成部分,是提高教学过程,使教与学同步的重要环节,英语教师应正确的改变教学观念,使用多样化的反馈途径,可以采用现代化科技互联网技术和学生进行沟通,得到课堂信息反馈,大量重复练习学习过的语法、单词,活学套用等方法不断培养学生学习兴趣,增强学生学习英语的自信及学习潜能。     

探究小学校道德情感教育存在的问题及解决策略

当前小学道德教育的目的,不仅是传授小学生道德原则和规范,而且还要培养小学生将外在的道德要求内化为个体自身的道德追求。本文从小学校道德情感教育的含义入手,剖析了当前存在的问题,并提出了切实可行的解决策略。     

初中政治教学中存在的问题及解决的策略

初中生处于人生观、价值观形成的阶段,初中政治课在塑造这种价值观的过程中有着至关重要的作用。但是,长期以来,初中政治教学中存在诸多问题,如学生对政治课缺乏学习兴趣,政治教师素质有待提高等。文章针对这些问题,从教学理念、教学方法和教师素质三个方面分析了产生这些问题的原因,并提出了解决这些问题的策略,包括积极转变教学理念、改革教学方法和努力提高教师队伍的素质。     

探究农村小学课堂教学中存在的问题及解决策略

近年来,国家教育改革在深层次展开,特别是在农村教育领域发生了很大变化,其存在的问题也逐渐凸显出来,被越来越多的人关注和研究。本文力图从农村小学课堂教学中存在的问题出发,分析其问题存在的原因,从而进一步有针对性地提出解决策略。     

Analysis of problem solving strategies on electricity problems in 12 to 13 year olds

Strategies implemented by 12–13 year olds to solve electricity problems are examined. Three factors account for observed strategies:

1. type of problem representation, itself dependent on the knowledge base;
2. cognitive personality dimensions;
3. form of problem statement.

Individual interviews were conducted. Each problem statement contained a perceptual ‘trap’ designed to induce contradictory responses. Strategies were coded for accuracy, latency, justification and control. Five types of problem solving strategies were observed:

1. a strategy based on misconceptions such as the vanishing current model;
2. a similar strategy but greater verbalization of doubt;
3. rush to use formulas;
4. sequential analysis of circuit;
5. application of principles learned in class.

Analysis shows that the target problems fell into two classes: problems that triggered automatic (canonical or calculatory) responses, and problems which were much more disruptive. The latter differentiated students who could handle contradictions and control their responses. Mention is also made of difficulties caused by the signified/signifier relationship.     

利用联想发现法解数学题

联想发现法是常用的解题方法技巧,本文阐述了在求解数学问题时,根据新问题与原型的相似、接近、对比等关系,通过联想、类比、对比等探讨、发现新问题解决的方法,提供了一条新的探索新问题思路路径。     

Problem solving in the rat: Piecemeal acquisition of cognitive maps

The purpose of this experiment was to compare the problem-solving performance of rats allowed to explore either one or two tables of Maier’s three-table-problem apparatus on successive days. The feeding experience and test trial were administered on the day after all tables and runways had been explored in this piecemeal fashion. No rat that explored only one table and runway per day was able to solve the problem, whereas 60% of the rats that explored two tables and their interconnecting runways did solve the problem. All rats that explored the entire apparatus on each exploratory day were able to solve the problem. These data support the notion that animals can conceptually link objects experienced successively into cognitive representations which specify the constant relationships existing between those objects. The existence of such an absolute spatial mechanism makes it unnecessary for an organism to depend upon relative spatial mechanisms such as routes or cues.     

化学教学中结构不良问题的解决策略

结构不良问题主要可以分为三种不同的类型,本文结合结构良好问题与结构不良问题的异同,利用几个具体化学实例来分析化学教学中不同类型结构不良问题的解决策略.     

Neural network method for solving elastoplastic finite element problems

INTRODUCTION An Artificial Neural Network (ANN) is an in-formation-processing paradigm that is inspired by the way biological nervous systems, such as the brain, process information. It is composed of a large number of highly interconnected processing elements (neu-rons) working in unison to solve specific problems. In recent years, neural network has been widely applied in the field of engineering construction as a large dimensional nonlinear dynamic system, because of its support for …     

改进遗传算法求解TSP问题

遗传算法(GA)是由遗传进化理论指导的随机搜索寻优算法,传统GA的寻优能力与随机搜索能力之间存在着相互制约的关系,所以对地形极其复杂、极无规律的TSP的应用效果并不十分理想.通过利用互换启迪交叉算子加快局部搜索算法的收敛速度,利用模式增加修补算子防止算法早熟收敛,给出了一种求解TSP问题的新型遗传算法.仿真实验表明该算法是有效的和可行的.     

科技型初创企业知识产权融资的问题与对策

中小企业融资难的问题一直被广泛关注,对于缺乏有形资产作为担保要件的科技型初创企业而言更甚。本文从我国现行的相关法律制度出发,重点探讨了科技型初创期企业利用知识产权获得质押担保贷款的主要障碍和解决思路。