＂聚合物分子量的统计意义＂的互动教学

针对目前高等学校课堂教学过程中,尤其是基础理论的教学中,普遍存在学生参与课堂程度低、教学效果差的现状,本文以作者自身讲授“聚合物分子量的统计意义”为实例,详细记录了在课堂中如何实施老师引导、学生参与的互动教学过程。课堂设计从学生自身出发,讲解、讨论、练习等教学方法相互穿插,充分体现了以生为本的教学理念。经过多年教学实践,证明这种教学形式有助于学生掌握知识点,且学生参与课堂活动人数相比老师单独讲解有大幅度的提高。     

ISTMO: An interval reference point-based method for stochastic multiobjective programming problems

In this paper, we present an interactive algorithm (ISTMO) for stochastic multiobjective problems with continuous random variables. This method combines the concept of probability efficiency for stochastic problems with the reference point philosophy for deterministic multiobjective problems. The decision maker expresses her/his references by dividing the variation range of each objective into intervals, and by setting the desired probability for each objective to achieve values belonging to each interval. These intervals may also be redefined during the process. This interactive procedure helps the decision maker to understand the stochastic nature of the problem, to discover the risk level (s)he is willing to assume for each objective, and to learn about the trade-offs among the objectives.     

环境化学教学内容的优化整合与教学方法多样化

结合我校相关专业的实际情况和多年来教学实践中的经验与体会,为提高环境化学的教学效果,增强环境科学相关专业学生的职业胜任能力,对环境化学理论与实践课程内容进行优化整合,在教学过程中因材施教,实施多样化的教学方法,充分发挥教师的主导作用和学生的主体作用.     

Cumulative curves for exploration of demographic data: a case study of Northwest England

Summary  The paper introduces the idea of generalising a cumulative frequency curve to show arbitrary cumulative counts. For example, in demographic studies generalised cumulative curves can represent the distribution of population or area. Generalised cumulative curves can be a valuable instrument for exploratory data analysis. The use of cumulative curves in an investigation of population statistics in Northwest England allowed us to discover interesting facts about relationships between the distribution of national minorities and the degree of deprivation. We detected that, while high concentration of national minorities occurs, in general, in underprivileged districts, there are some differences related to the origin of the minorities. The paper sets the applicability conditions for generalised cumulative curves and compares them with other graphical tools for exploratory data analysis.     

Interactive fuzzy linear programming and an application sample at a textile firm

The purpose of this study is to examine Interactive Fuzzy Linear Programming (IFLP) model by using Zimmermann, Werners, Chanas and Verdegay’s approaches that provide best decision-making under fuzzy environments. In this study, it is used the method which can model the fuzzy structure of the real world and which operates with the decision maker interactively, which aims at obtaining the best solution by continuing this interactiveness in the solution process, which includes fuzziness with more realistic approach to the system. It is showed that the importance of fuzziness concept for IFLP problems, how it is applied on real-world problems and its effects.     

高分子材料课程的讨论与互动式教学

浙江大学《高分子材料》课程针对高分子专业本科生开设,教学内容包含了塑料、橡胶、纤维等主要的传统高分子材料以及聚合物共混材料的相关内容。该课程的特点是知识点多而分散、知识面宽,而内容相对陈旧。采用讨论与互动式教学,将老师讲授与学生讲授相结合,由学生组成学习小组,具体分配到某一种高分子材料的教学内容。学生课后收集和整理相关资料,制作幻灯片并在课堂上完成讲授以及问题解答。通过课程结束后的调查问卷收集学生反馈,说明该方法能够较好地完成教学内容,极大地调动学生的积极性,提高了学生参与课程讨论和学习的热情。     

Variations on play with interactive computer simulations: balancing competing priorities

U.S. mathematics teachers face considerable pressures to keep up with pacing guides and to prepare students for standardized tests. At the same time, they are called upon to engage students in innovative exploratory activities and to incorporate new technologies into their lessons. These competing priorities pose considerable challenges. Against this backdrop, we investigated how middle-school mathematics teachers incorporated play into lessons involving interactive computer simulations (sims). The teachers used PhET sims in a variety of lessons. Following general guidelines for teaching with PhET sims, these lessons included a short period of play prior to more structured work with the sim. Our analysis of 15 mathematics lessons involving play led to the identification of four characteristics that distinguish the play phases of these lessons. Based on combinations of these characteristics, we identified three specific profiles of play, which lie at different points along a continuum of priorities from foregrounding students’ ideas to keeping pace. We discuss the implications associated with each profile of the play phase, and we begin to articulate a theory that frames teaching with play as a matter of balancing divergent and convergent modes of activity.     

Novel prediction of interactive mode between antibiotics and their DNA/protein targets based on the antibiotic structure parameters

This paper focuses on investigating the structure parameters of antibiotics which have decisive influence on the interactive mode between antibiotics and DNAs. The analytical results of Best Prediction Set Support Vector Machine Method (BPSSVM) show that the number of N atoms, the number of double bonds, the number of lone-pair electrons, the molar refractivity and the molecular radius are the main structure parameters which functionally decide their reactive modes. It is clear that the BPSSVM is potent in predicting the interactive modes between antibiotics and DNAs.     

The generation of formulas held in common knowledge

Common knowledge of a finite set of formulas implies a special relationship between syntactic and semantic common knowledge. If S, a set of formulas held in common knowledge, is implied by the common knowledge of some finite subset of S, and A is a non-redundant semantic model where exactly S is held in common knowledge, then the following are equivalent: (a) S is maximal among the sets of formulas that can be held in common knowledge, (b) A is finite, and (c) the set S determines A uniquely; otherwise there are uncountably many such A. Even if the knowledge of the agents are defined by their knowledge of formulas, 1) there is a continuum of distinct semantic models where only the tautologies are held in common knowledge and, 2) not assuming that S is finitely generated (a) does not imply (c), (c) does not imply (a), and (a) and (c) together do not imply (b). Received November 1999/Revised version January 2000     

InterQuad: An interactive quad tree based procedure for solving the discrete alternative multiple criteria problem

In this paper an interactive procedure based upon a data structure called a quad tree is developed for solving the discrete alternative multiple criteria problem. Called InterQuad, the procedure has been designed with large discrete alternative problems in mind. InterQuad takes advantage of the ability of a quad tree to identify, store, and retrieve nondominated criterion vectors. Then, the user interacts with the nondominated criterion vectors stored in the quad tree in a fashion similar to that of the Combined Tchebycheff/Aspiration Criterion Vector Procedure of Steuer, Silverman and Whisman.