初中历史与社会课"问问题"活动教学策略探讨

美国著名学者布鲁巴克很精辟地指出:“最精湛的教学艺术,遵循的最高准则就是让学生自己提问题。”由于当前学生的提问能力较弱,本文特别提出了一些基本方法和策略来改善和提高学生的提问能力、学习能力,逐渐养成问问题的好习惯。

口述历史，新形式的历史科学--不仅仅是问问题

口述历史通过采访人对受访人个人记忆的挖掘和记录来了解和重建历史。采访者和受访者互动的成功与否在很大程度上决定了采访的成功与否。成功的口述历史离不开问问题，但是口述历史和问问题并不是完全等同的，口述历史的提问要讲究一定的技巧，非常值得我们探讨。

初中社思课五步法助推学生“问问题”能力

针对当前学生提问能力的缺乏,笔者在科学的教学理论指导下,在充分实践的基础上,归纳出了以下五个步骤营造民主环境,培养学生“问问题”的意识;利用保障机制,扩充学生问问题的数量;尝试问题卡片,增强学生问问题的价值性;依托探究平台,激发学生问问题的探究能力;借助习惯驱动,提升学生问问题的升华能力.采用环环相扣的办法可以逐级规范学生的提问能力,达到既提高学生学习兴趣,也培养学生提问的学习品质.

好的初中数学老师,都会问问题

人的思维过程都是始于问题情境,而问题情境又具有情感上的吸引力,能使人产生学习的兴趣,激发其求知欲与好奇心。所以在初中生学习数学的过程中,培养学生数学问题提出能力是非常重要的。对于以训练逻辑思维能力为主旨的数学学习,提出问题,思考问题,回答问题贯穿于整个学习过程,因此,在数学教学中,教师要精心创设问题情境,激起学生对新知学习的热情,拉近学生与新知的距离,为学生的学习作好充分的心理准备。而在创设情境,引起学生的学习兴趣后,要使学生思考、理解所要学习的内容的主要途径在于提问,所以,好的初中数学老师,都会研究在数学课上,怎么向学生问问题。

“问”渠清如许源头“活”水来——论创建“爱问问题”班集体文化

笔者从2016年开始展开了一届3年持续的“学问”课堂的教学研究,在实践中越来越深刻的认识到创建一个“爱问问题”班集体文化十分重要。本文将浅薄阐述班集体“爱问”文化氛围的基本特征,创建“爱问问题”班集体文化的实施的原因与意义,及创建的具体措施。

中层生数学课的预问问题探讨

一、中层生的预问问题预问问题就是他们在学习数学过程中,把碰到的数学问题、经过反复思考、查阅资料、与同学讨论后仍解决不了的问题抄下来,在老师辅导中层生时间前交给老师。

汉语句子相似度计算在FAQ中的应用

通过对传统的汉语句子相似度模型进行改进,提出一种基于关键词加权的汉语句子相似度计算方法,在此基础上实现一个基于常问问题库的中文问答系统。该系统通过将用户输入的自然语言问句与常问问题库中的候选问题集进行相似度计算,自动返回最匹配的答案给用户,自动更新和维护常问问题库。实验结果表明该方法在问句匹配上比传统方法具有更高的准确率。

New signature scheme based on two cryptographic assumptions

In order to improve the security of the signature scheme, a digital signature based on two hard-solved problems is proposed. The discrete logarithm problem and the factoring problem are two well known hard- solved mathematical problems. Combining the E1Gamal scheme based on the discrete logarithm problem and the OSS scheme based on the factoring problem, a digital signature scheme based on these two cryptographic assumptions is proposed. The security of the proposed scheme is based on the difficulties of simultaneously solving the factoring problem and the discrete logarithm problem. So the signature scheme will be still secure under the situation that any one of the two hard-problems is solved. Compared with previous schemes, the proposed scheme is more efficient in terms of space storage, signature length and computation complexities.

交流对小学数学教学的影响

交流是一种很好的学习方式,教育本就不是一种闭门就能很好完成的工作,所以在小学数学教育方面,我们应该重视学生之间、师生之间以及学校之间的交流,了解对方的学习水平和学习状态,这些对于我们学生的进步和发展有积极的作用。

Feature combination via importance-inhibition analysis

A new method for combining features via importance-inhibition analysis （IIA） is described to obtain more effective feature combination in learning question classification. Features are combined based on the inhibition among features as well as the importance of individual features. Experimental results on the Chinese questions set show that, the IIA method shows a gradual increase in average and maximum accuracies at all feature combinations, and achieves great improvement over the importance analysis（IA） method on the whole. Moreover, the IIA method achieves the same highest accuracy as the one by the exhaustive method, and further improves the performance of question classification.

A FICTITIOUS DOMAIN METHOD FOR DIRICHLET PROBLEM AND ITS APPLICATIONS TO GENER ALIZED STOKES PROBLEM

This paper discusses a fictitious domain method for the linear Dirichlet problem and its applications to the generalized Stokes problem. This method treats Dirichlet boundary condit ion via a Lagrange multiplier technique and is well suited to the no-slip bound ary condition in viscous flow problems. In order to improve the accuracy of solu tions, meshes are refined according to the a posteriori error estimate. The mini -element discretization is applied to solve the generalized Stokes problem. Fin ally, some numerical results to validate this method are presented for partial d ifferential equations with Dirichlet boundary condition.

Existence of Solutions for S-L Singular Boundary Value Problems with p-Laplacian Operators

The existence of solutions for singular nonlinear two point boundary value problems subject to Sturm Liouville boundary conditions with p Laplacian operators is studied by the method of upper and lower solutions. The proof is based on an application of Schauder’s fixed point theorem to a modified problem whose solutions are that of the original one. At the same time, Arzela Ascoli theorem is used to prove that the defined operator N is a compact map.

An Existence Theorem of Positive Solution for Fourth-order Superlinear Semipositone Eigenvalue Problems

In this paper we investigate the existence of positive solution for a class of fourth_order superlinear semipositone eigenvalue problems. This class of problems usually describes the deformation of the elastic beam whose both end_points are fixed.

Question classification in question answering based on real-world web data sets

To improve question answering （QA） performance based on real-world web data sets,a new set of question classes and a general answer re-ranking model are defined.With pre-defined dictionary and grammatical analysis,the question classifier draws both semantic and grammatical information into information retrieval and machine learning methods in the form of various training features,including the question word,the main verb of the question,the dependency structure,the position of the main auxiliary verb,the main noun of the question,the top hypernym of the main noun,etc.Then the QA query results are re-ranked by question class information.Experiments show that the questions in real-world web data sets can be accurately classified by the classifier,and the QA results after re-ranking can be obviously improved.It is proved that with both semantic and grammatical information,applications such as QA, built upon real-world web data sets, can be improved,thus showing better performance.

为什么婴幼儿爱问"为什么"

1~3岁的婴幼儿总是问很多让人觉得难以回答的问题.为什么他们要问问题?养育者和教育者又该如何回应他们的问题?婴幼儿的问题给成人提供了了解婴幼儿认知阶段和发展的机会.在这篇文章里,我们将回顾过往关于婴幼儿提问和成人的回应对婴幼儿思维的影响的科学研究.首先,研究证明婴儿甚至在会说话之前就会问问题了,这说明他们的好奇心和主动的求知欲早已存在.其次,婴幼儿的提问并不是随机的;相反,他们会有选择性地挑选问什么和问谁.最后,成人对于婴幼儿问题的回应十分重要:成人的回应不仅可以促进婴幼儿的认知发展,还可以让他们借此评估成人作为信息来源的可信度.基于科学证据,我们还对成人应如何回应孩子提供了切实的建议,以更好地促进孩子的认知发展.整体而言,科学地理解婴幼儿的"为什么",可以帮助养育者和教育者对他们的认知发展有更深刻的了解,从而做出更有助于促进婴幼儿学习的回应.

L~∞-Error Estimate of a Nonconfoming Rectangular Plate Element

In this paper,a nonconforming rectangular plate element,the modified incomplete biquadratic plate element,is considered. The asympotic optimal L~∞-error estimate is obtained for the plate bending problem. This proof is based on the method of regularized Green's function and 'the trick of auxiliary element'.

2-median location improvement problems under weighted l_1 norm and l_∞ norm on trees

This paper focuses on the 2-median location improvement problem on tree networks and the problem is to modify the weights of edges at the minimum cost such that the overall sum of the weighted distance of the vertices to the respective closest one of two prescribed vertices in the modified network is upper bounded by a given value.l1 norm and l∞norm are used to measure the total modification cost. These two problems have a strong practical application background and important theoretical research value. It is shown that such problems can be transformed into a series of sum-type and bottleneck-type continuous knapsack problems respectively.Based on the property of the optimal solution two O n2 algorithms for solving the two problems are proposed where n is the number of vertices on the tree.

Generalized Variational Iteration Solution of Soliton for Disturbed KdV Equation

The corresponding solution for a class of disturbed KdV equation is considered using the analytic method. From the generalized variational iteration theory, the problem of solving soliton for the corresponding equation translates into the problem of variational iteration. And then the approximate solution of the soliton for the equation is obtained.

Blending Scheduling under Uncertainty Based on Particle Swarm Optimization Algorithm

Blending is an important unit operation in process industry. Blending scheduling is nonlinear optimiza- tion problem with constraints. It is difficult to obtain optimum solution by other general optimization methods. Particle swarm optimization (PSO) algorithm is developed for nonlinear optimization problems with both contin- uous and discrete variables. In order to obtain a global optimum solution quickly, PSO algorithm is applied to solve the problem of blending scheduling under uncertainty. The calculation results based on an example of gasoline blending agree satisfactory with the ideal values, which illustrates that the PSO algorithm is valid and effective in solving the blending scheduling problem.

A Remark on the Positive Definite Problem of a Binary Quartic Form

In this paper,we discussed the positive definite problem of binary quartic forms and obtained a necessary and sufficient conditions.