步枪作战效能评估

应用联系数、关联度、模糊综合评判以及层次分析方法分别对两代(共10种)冲锋枪和自动步枪作战效能的评估和排序进行了讨论,并对其作战效能和技术水平进行了判断.所得结论对了解我军装备的先进程度,适应新时期军事科学和战备具有特别重要的意义.     

从换路定律证明看扩充实数的必要性

指出了在电路分析课程中换路定律证明方面存在的矛盾,证明矛盾的根源在于实数的完备性,并依此说明了建立广义实数概念的必要性.     

平等问题的哲学思考

一方面,每个人因其最基本的贡献完全平等——每个人一生下来便都同样是缔结、创建社会的一个股东——而应该完全平等地享有基本权利、完全平等地享有人权,可以名之为完全平等原则;另一方面,每个人因其具体贡献的不平等而应享有相应不平等的非基本权利,也就是说,人们所享有的非基本权利的不平等与自己所做出的具体贡献的不平等比例应该完全平等,可以名之为比例平等原则。社会所提供的发展才德、做出贡献、竞争职务和地位以及权力和财富等非基本权利的机会,是全社会每个人的基本权利,是全社会每个人的人权,应该人人完全平等。反之,家庭、天赋、运气等非社会所提供的机会,则是幸运者的个人权利,无论如何不平等,他人都无权干涉;但幸运者利用较多机会所创获的较多权利,却因较多地利用了共同资源＂社会合作＂而应补偿给机会较少者以相应权利。这就是机会平等原则。     

有界模糊数的比较与排序

利用两模糊数之间的距离公式,将模糊数之间的比较转换为模糊数与纵轴距离之间的比较。在此基础之上定义了模糊数空间上的序关系,并证明了它们的一些性质。这种方法的排序效果与人们的直觉是一致的且不悖逆于实数的自然序。利用距离方法定义的序关系,便于理解与计算机实现。     

一类部分和乘积的重对数律

对独立同分布的正的均方可积的随机序列,证明了一类部分和乘积在适合的正则化因子下的某种重对数律,进一步丰富了概率极限理论     

Hilbert‘s Sixteenth Problem and Its Generalization

This paper deals with Hilbert‘s 16th problem and its generalizations.The configurations of all closed branches of an algebraic curve of degreee n are discussed.The maximum number of sheets for an algebraic equation of degree n and the maximum number of limit cycles for a planar algebraic autonomous system are achieved.The author also considers different generalizations and some related problems.     

三个连续的发现与用几何方法研究数论的新构想

在对毛比斯面的证明方法的深入研究中，发现了一种证明方法——“递推法”；在对“递推法”的进一步探索中，发现了一类新几何体——“棱环体”；在研究“棱环体”的边数的变化规律中，得到了一张“数表”，对“数表”的进一步研究，又相继发现了“最大公约数定理”、“素数规律”等．“棱环体”的发现，引发了“扭曲几何学”的构想；“数表”的发现，为一种新的数论研究方法——“数论的几何研究法”的提出，奠定了基础。     

Discriminating Quantity: New Points for Teaching Children with Down Syndrome About Number?

ABSTRACT

The focus of much mathematics teaching has been on the acquisition of counting, an area where children with Down syndrome can experience particular difficulties. Research with typically developing children has highlighted how early awareness of quantity provides a strong platform for the acquisition of later mathematical skills and programmes of early intervention have been introduced. Many of these studies are embedded in the work and traditions of developmental and cognitive psychology and can be difficult to access. Consequently, this is an area that has been largely ignored in the curricula of children with Down syndrome. This paper seeks to make this literature more available. It systematically reviews previous research with children with Down Syndrome on these early foundations. It considers seemingly contradictory findings in the light of differences in tasks, their presentation and instructions, and the responses required, in order to draw conclusions and reflect on the implications for teaching and learning. Some of these propositions are in contrast to existing practices and call for further research to test their effectiveness.     

关于Lucas数的一个程序解

在分析Lucas数列{Ln}的有关性质及相关规律的基础上定义新的广义Lucas数，利用TURBOC语言，给出了Lucas数及广义Lucas数的一个程序解，从而使其在组合数学以及工程技术中的应用范围进一步拓宽。     

When screens replace backyards: strategies to connect digital-media-oriented young people to nature

Abstract

Children’s connection to nature (CTN) is declining with each generation, a concerning trend given that CTN is positively linked to wellbeing and environmentalism. A primary cause of this decline is that twenty-first-century youth engage with screens for several hours each day, which to a large extent replaces nature-based play. Researchers have proposed that this change represents a transition in human orientation, particularly in Westernized societies, from nature (biophilia) to digital media (videophilia). Interventions promoting nature-based play must acknowledge digital-media use as a competing leisure pursuit, but the literature presents little guidance for designing programs that will attract young people who are more oriented toward digital media than nature. Drawing on a wide breadth of research, we address this gap through (1) exploring the implications of videophilia for nature-based programming and (2) summarizing recommendations from a narrative literature review for designing interventions that appeal to digital-media-oriented youth.