在大学物理探究课中引入演示实验的尝试

物理教学改革使得探究课越来越重要,为使探究课更有成效,尝试将演示实验引进物理探究课堂,在演示实验时从学生学习过程的特点、规律和一些做法中体现如何探究,从而提高演示实验教学的自觉性和实效性。     

HT-7U装置冷却回路概念设计

】HT-7U超导托卡马克核聚变实验装置是国家九五重大科学工程 ,包括一个具有非圆小截面的大型超导托卡马克 HT-7U实验装置和低温、真空、水冷、电源及控制、数据采集和处理、波加热、波驱动电流、诊断以及公共基础设施等重要子系统。文中概要地介绍 HT-7U装置冷却回路的基础结构和主要参数 ,对冷却回路进行了概念设计 ,给出了冷却回路流程的初步方案     

Simulation vs. Understanding: A Tension,in Quantum Chemistry and Beyond. Part C. Toward Consilience

In the last part of our Essay, we outline a future of consilience, with a role both for fact-seekers, and for searchers for understanding. We begin by looking at theory and simulation, surrounded as they are by and interacting with experiment, especially in Chemistry. Experimenters ask questions both conceptual and numerical, and so draw the communities together. Two case studies show what brings the theoretician authors joy in this playground, and two more detailed ones make it clear that computation/simulation is anyway deeply intertwined with theory-building in what we do, or for that matter, anywhere in the profession. From a definition of science we try to foresee how simulation and theory will interact in the AI-dominated future. We posit that Chemistry's streak of creation provides in that conjoined future a link to Art, and a passage to a renewed vision of the sacred in science.     

Wall Conditioning Operation on the HL-2A Tokamak and Conceptual Design for the Device Modification

During the 2006 experiment campaign of HL-2A, about 2000 shots have been implemented, the plasma current of 433 kA and 3.0 s duration have been obtained. The wall conditioning methods such as glow discharge cleating （GDC） , siliconization and Ti sublimation were applied. The experiment results of wall conditioning research will be introduced in this report. At the same time, the conceptual design of modification of HL-2A tokamak has obtained great progress, two modification schemes have been obtained, and the conceptual design results will be presented.     

球环型氚生产聚变堆概念设计

先进的球环型氚生产聚变堆是聚变能发展的中间应用产物。与传统托卡马克氚生产堆不同，在设计中利用了球形环的先进等离子体物理性能，并具有紧凑的结构特征，尽量利用真空室内的空间安置氚生产包层以减少氚泄露而增加氚增殖率，达到年生产富余氚lkg的目的，相应的堆利用因子为40％。在二维中子学计算的基础上，提出了ST-TPR的初步概念设计．为下一步更详细具体的概念设计提供了直接的依据和重要的参考价值。     

语言声学的进展

本文涉及语言声学的语音学研究、文语转换技术、语音识别技术及自然语言处理等方面，简要介绍了有关汉语在前三方面的进展和发展方向；重点介绍了面向整个自然语言理解处理的新理论一概念层次网络（HNC）理论的主要内容及其进展，试图在理论层面上给出HNC理论的基本概貌。     

RGC: A new conceptual clustering algorithm for mixed incomplete data sets

In this paper, a new conceptual algorithm for the conceptual analysis of mixed incomplete data sets is introduced. This is a logical combinatorial pattern recognition (LCPR) based tool for the conceptual structuralization of spaces. Starting from the limitations of the elaborated conceptual algorithms, our laboratories are working in the application of the methods, the techniques, and in general, the philosophy of the logical combinatorial pattern recognition with the task to improve those limitations. An extension of Michalski's concept of l-complex for any similarity measure, a generalization operator for symbolic variables, and an extension of Michalski's refunion operator are introduced. Finally, the performance of the RGC algorithm is analyzed. A comparison with several known conceptual algorithms is presented.     

Appropriate use of a CAS in the teaching and learning of mathematics

If the use of a computer algebra system (CAS) is to be meaningful and have an impact on students, then it must be grounded in good pedagogy and have some clearly defined goals. It is the authors' belief that an important goal for teaching mathematics with the CAS is that courses be designed so that students can become active participants in their learning experience, planning the problem-solving strategies and carrying them out. The CAS becomes an important tool and a partner in this learning process. To this end, here the authors' have linked the use of the CAS to an existing classification scheme for Mathematical Tasks, called the MATH Taxonomy, and illustrated, through concrete examples, how the goals of teaching and learning of mathematics can be set using this classification together with the CAS.     

Algorithmic contexts and learning potentiality: a case study of students’ understanding of calculus

The study explores the nature of students’ conceptual understanding of calculus. Twenty students of engineering were asked to reflect in writing on the meaning of the concepts of limit and integral. A sub-sample of four students was selected for subsequent interviews, which explored in detail the students’ understandings of the two concepts. Intentional analysis of the students’ written and oral accounts revealed that the students were expressing their understanding of limit and integral within an algorithmic context, in which the very ‘operations’ of these concepts were seen as crucial. The students also displayed great confidence in their ability to deal with these concepts. Implications for the development of a conceptual understanding of calculus are discussed, and it is argued that developing understanding within an algorithmic context can be seen as a stepping stone towards a more complete conceptual understanding of calculus.