四阶微分系统第二特征值的上界估计

研究四阶微分系统第二特征值的上界估计.利用试验函数、Rayleigh定理、分部积分和Schwartz不等式等估计方法与技巧,获得了用第一特征值来估计第二特征值的上界的不等式,估计系数与区间的度量无关.其结果在物理学和力学中有着广泛的应用,在常微分方程的研究中起着重要的作用.     

一类任意阶微分方程第二特征值的上界估计

考虑了一类任意阶微分方程第二特征值的上界估计 ,获得了用第一特征值来估计第二特征值的上界不等式 ,其估计系数与区间的度量无关 .此结果在物理学和力学中有着广泛的应用 ,在微分方程的研究中起着重要的作用     

四阶微分系统Dirichet第二特征值的估计

考虑四阶微分系统广义第二特征值的含权上界估计,利用算子的特征值及特征函数空间的定性理论、矩阵运算、分部积分、Schwartz和Young不等式等方法,获得了用第一特征值来估计第二特征值上界的显式不等式,其上界仅与系统的系数有关,而与区间的度量及位置无关,其结果是参考文献结论的进一步拓展.     

某类微分系统第二特征值的上界估计

利用试验函数、分部积分、Rayleigh定理和不等式估计等方法与技巧,获得了用第一个特征值来估计第二个特征值的上界的结果,其估计系数与区域的几何度量无关,其结果在物理学和力学等领域中应用广泛,G.H.Hile和R.Z.Yeh所得的结果是本文的特例。     

一类常微分方程特征值的上界估计

考虑一类常微分方程特征值的上界估计,利用分部积分、Rayleigh定理和不等式估计等方法,获得了用前n个特征值来估计第n+1个特征值的上界的不等式,其估计系数与区间的几何度量无关,其结果在物理学和力学等领域中应用广泛.     

高阶微分方程第二特征值的上界

本文考虑了对高阶微分方程用第一特征值来估计第二特征值的上界，其估计系数与区间的度量无关，其结果在物理和力学中有着广泛的应用。     

膜振动一致椭圆型问题的加权特征值上界估计

考虑膜振动一致椭圆型问题的加权特征值上界估计,利用试验函数、分部积分法、Rayleigh定理以及不等式估计等方法,建立了用前n个特征值来估计第n＋1个特征值的上界估计,其估计系数与区域度量无关．这个结果在力学和物理学中有着广泛的应用．     

一类偏微分方程特征值的上界估计

考虑一类偏微分方程特征值的上界估计,利用分部积分、Rayleigh定理和不等式估计等方法,获得了用前n个特征值来估计第n＋1个特征值的上界的不等式,其估计系数与区域的度量无关,这个结果在力学和物理学中有着广泛的应用。     

一类偏微分系统谱的上界估计

考虑一类偏微分系统谱（又称特征值）的上界估计,利用分部积分、Rayleigh定理和不等式估计等方法,获得了用前n个特征值来估计第n＋1个特征值的上界不等式,其估计系数与区域的几何度无关,其结果在物理和力学等领域中应用广泛。     

一类微分系统特征值的上界估计

本文考虑一类微分系统特征值的上界估计,利用分部积分、Rayleigh定理和不等式估计等方法和技巧,获得了用前n个特征值来估计第n＋1个特征值的上界的不等式．     

Working with families of children with special needs

Katie Sefton, Richard M. Gargiulo, and Stephen B. Graves are with the School of Education, Department of Curriculum & Instruction, University of Alabama at Birmingham.     

Correlates of young children's interactions with classmates with disabilities

Although including children with developmental disabilities in preschool classes has become increasingly common, little is known about how experiences in an inclusive classroom affect young children's development. In Study 1, 36 typically developing children (mean age = 55.2 months) attending an inclusive, university-based early childhood program were interviewed about their knowledge of and attitudes toward children with disabilities. Parents answered questions about: (a) expectations for their children's prosocial behaviors and (b) their own beliefs about interacting with children with disabilities. Parents' beliefs and children's attitudes toward children with disabilities were positively related to the frequency of children's actual contacts with classmates with disabilities during free play time. In Study 2, the beliefs and behaviors of 20 children from an inclusive university-based early childhood program and 18 children from an inclusive community-based program were compared. There was no difference between the two programs in the amount of contact typically developing children had with classmates with disabilities.     

原花青素联用胡椒碱减轻抑郁样行为的机制研究

目的：探讨原花青素（proanthocyanidin,OPC）不同剂量联用胡椒碱（piperine,PIP）的抗抑郁样行为及其机制.方法：采用慢性不可预知性温和应激模型,连续造模联合给药21d后,d 22测定小鼠悬尾、强迫游泳不动时间;用高效液相电化学法测定小鼠海马和前额叶皮层中单胺递质及其代谢产物的含量,荧光分光光度法检测全脑单胺氧化酶活性.结果：与正常组相比,模型组小鼠悬尾和强迫游泳测试中的不动时间显著增加;同时其海马、前额叶皮层中5-羟色胺（5-hydroxytryptamine,5-HT）、去甲肾上腺素（norepinephrine,NE）含量显著下降,但5-羟吲哚乙酸（5-hydroxyindoleacetic acid,5-HIAA）与5-HT比值（5-HIAA/5-HT）显著上升.OPC （50、25、12.5 mg·kg-1）剂量组联用PIP（5 mg·kg-1）能够逆转这种现象.此外,OPC （50、25、12.5 mg·kg-1）剂量组联用胡椒碱（5 mg·kg-1）组还能降低由于应激引起的单胺氧化酶（monoamine oxidase,MAO）A型活性升高,但不影响单胺氧化酶B型活性.结论：原花青素联用胡椒碱可以改善由于慢性应激对小鼠造成的抑郁样行为,其机制可能与降低单胺氧化酶活性,增加单胺递质含量有关.     

从石墨的教学谈课堂“走向”工厂的重要性

中专化学教材涉及的化学知识都是经典的基础知识 ,一般来说比较抽象 .在教学中 ,针对教学的重点和难点 ,采用直观教学法 ,适当地引入一些理论联系实际的内容 ,将有利于提高学生的学习兴趣 ,调动其学习的主动性和积极性 .这也是加强素质教育 ,提高学生创新能力的一种重要手段 .     

以技能竞赛促进会计电算化课程教学

要突出电算化专业培养技能型人才的特色，加强学生电算化应用技能的培养尤为重要。目前，除采用案例，强化实验、实训教学外，开展电算化应用技能竞赛也是提高电算化课程教学效果的有效途径．     

Inclusion of pupils with ADHD symptoms in mainstream classes with PBS

Inclusion is never only a practical issue of placement. School-wide systemic change, together with well-functioning, multi-tiered support, can promote the inclusion of all pupils. This paper draws on research conducted in two mainstream primary schools in Finland. The primary focus was to gain insight into practical solutions to facilitate the inclusion of pupils with attention-deficit hyperactivity disorder (ADHD) in mainstream teaching. Using an experimental, multiple-baseline, single-case design, we examined the effects of Check-in Check-out (CICO) support on changes in the behaviour of two pupils who displayed ADHD-type behaviours. The key features of CICO are brief morning and afternoon meetings with an adult, the use of a daily report card, regular positive feedback during the day, and parental involvement. This study examined if behavioural gains made during the implementation of CICO support can be maintained. Visual data analysis revealed differences in two CICO-ending strategies on maintenance in pupils with ADHD symptoms. The results suggest that consistent universal positive behaviour support systems together with additional behavioural support can facilitate the successful inclusion of pupils observed by teachers to have even severe disruptive behaviours in a mainstream learning environment.     

道法传统与立法宽简

"道"是中国传统刑事政策思想的重要理论渊源之一,也是人定法的根据.立法宽简是道法传统的重要主张,并对中国古代立法影响深远.立法宽简应成为当下构建和谐社会的立法取向.     

证券数目增加时受扰动的M-V有效前沿研究

本文在均值-方差证券选择理论的基础上,引入扰动因子对增加证券数目后原有证券组合间相关性的改变进行了描述,运用代数运算简化模型推导,分析了在市场允许卖空条件下受扰动的M-V有效前沿,并且得出了有效前沿发生漂移的结论。为投资者及其投资决策提供了基本的方法和有意义的思路。     

理论分析与电磁仿真结合的微波器件设计教学

以介质谐振天线的典型工程应用为案例,将理论推导与电磁仿真相结合,对介质谐振天线进行分析和演示,增强学生对器件特性的理解,使学生从理论到仿真、从公式推导到可视化的演示,构建全面的知识结构。该教学模式发挥了电磁仿真在微波器件设计教学中良好的辅助作用,增强了学生解决复杂工程问题的能力,对器件设计类教学改革有一定的参考意义。