初授《高分子物理》课程的几点体会

作为初次参加《高分子物理》课程教学的教师,从听课、备课、上课、课后等方面进行了总结。只有做好这每个环节,并不断提高自身素质,才能逐渐成长为一名合格的专业教师。     

On a class of least-element complementarity problems

The present paper studies the linear complementarity problem of finding vectorsx andy inR ₊ ⁿ such thatc + Dx + y 0,b – x 0 andx ^T (c + Dx + y) = y ^T (b – x) = 0 whereD is aZ-matrix andb > 0. Complementarity problems of this nature arise, for example, from the minimization of certain quadratic functions subject to upper and lower bounds on the variables. Two least-element characterizations of solutions to the above linear complementarity problem are established first. Next, a new and direct method to solve this class of problems, which depends on the idea of least-element solution is presented. Finally, applications and computational experience with its implementation are discussed.Research partially supported by the National Science Foundation Grant MCS 71-03341 A04 and the Air Force Office of Scientific Research Contract F 44620 14 C 0079.     

滑坡防治工程安全性评价研究

滑坡灾害防治是一门综合性工程,防治工程的安全性取决于滑坡勘察、设计以及施工质量,本文就滑坡治理过程中各阶段易出现的问题予以实例说明,探讨滑坡防治工程中应注意的几个问题,对这些经验教训进行总结,同时强调监测在防治工程中的作用,其对于滑坡防治工程具有一定借鉴意义。     

医用有机化学教学经验谈

就医用有机化学教学中的绪论课讲授、教学过程设计、教学内容组织、前沿知识补充谈了点滴经验,希望对培养和提高学生的学习兴趣和科学思维能力有所帮助。     

Conceptualism and the Problem of Illusory Experience

According to the conceptualist view in the philosophy of perception, we possess concepts for all the objects, properties, and relations which feature in our experiences. Richard Heck has recently argued that the phenomenon of illusory experience provides us with conclusive reasons to reject this view. In this paper, I examine Heck’s argument, I explain why I think that Bill Brewer’s conceptualist response to it is ineffective, and I then outline an alternative conceptualist response which I myself endorse. My argument turns on the fact that both Heck, in constructing his objection to conceptualism, and Brewer, in responding to it, miss a crucial distinction between perceptual demonstrative concepts of objects, on the one hand, and perceptual demonstrative concepts of properties, on the other.

Separability criterion for quantum effects

Entanglement of quantum states is absolutely essential for modern quantum sciences and technologies. It is natural to extend the notion of entanglement to quantum observables dual to quantum states. For quantum states, various separability criteria have been proposed to determine whether a given state is entangled. In this Letter, we propose a separability criterion for specific quantum effects (binary observables) that can be regarded as a dual version of the Bell–Clauser–Horne–Shimony–Holt (Bell–CHSH) inequality for quantum states. The violation of the dual version of the Bell–CHSH inequality is confirmed by using IBM's cloud quantum computer. As a consequence, the violation of our inequality rules out the maximal tensor product state space, that satisfies information causality and local tomography. As an application, we show that an entangled observable which violates our inequality is useful for quantum teleportation.     

环境监测分析中校准曲线可靠性和检验方法的探讨

介绍了环境监测分析中校准曲线的分类、拟合方法和应用范围,提出了对拟合校准曲线进行可靠性检验的设想和建议的经验指标。如相对剩余标准差、截距、斜率检验、失拟方差检验等,这些方法在实际监测分析中具有一应用价值。     

XRF法在密闭鼓风炉粗锌分析中的应用

本文研究了用X－射线荧光光谱法测定密闭鼓风炉粗锌中铅、锌、铁和镉等元素,样品从炉前取出后铸成一定形状,被测表面经抛光后直接测定,不经化学处理。用经验系数法校正基体效应。用人工模拟制备标准,其浓度与X－射线强度的线性相关系数均在0．98以上,标准偏差小于0．0056;相对标准偏差小于2．41％。测定结果与化学结果相符。     

校园环境质量监测实践课程的实施与体会

校园环境质量监测实践课程是一门实践性很强的综合性实践课程。课程目标既有知识与技能目标,又有过程与方法目标,还有情感、态度和价值观目标。为了较好地达成课程目标,既要制定合理的实施方案,又要执行严格的实施过程。指导教师要做好集体备课、课前动员、分组指导、成绩评定和课后总结的每一个环节。     

The influence of experience on the quality of chemical measurements made on soils from former gasworks

 A strategy for ensuring that measurements of ten common contaminants found in soils from former gasworks are of optimum quality over long timescales is described. In particular, the performance of laboratories in applying validated measurement methods in both small- and large-scale inter-laboratory trials over a 5-year period is assessed. It is shown that a production engineering concept, the experience curve, has a significant influence on the quality of some of the measurements made and that this concept can be used to model the performance of laboratories. Complexity of the measurement procedure and familiarity of analysts with the measurement operations are suggested as the main drivers of method error. The implications of the achievable quality of measurement on the costs of land re-development and on confidence in the quality of the rejuvenated land are discussed. Received: 31 August 1996 Accepted: 5 February 1997