巧用克鲁金定理

巧妙地运用克鲁金定理，仅用代数方法就解决了一些积分问题。笔者还从克鲁金定理出发，导出了库斯科夫公式，并举出其应用实例。     

TIN地形曲面任意点法向量的高精度解算模型

曲面法向量是基于TIN完成数字地形解析分析的重要参考基础。本文首先分析了TIN中的三角形形状与地形曲面姿态的关系问题,然后构建了以地形曲面形态的相近相似特征为基点的V-Rub法向量解算模型。实验结果显示,V-Rub模型解算法向量的精度高,速度快,具有很好的实用价值。     

“有点（儿）＋‘小＋ adj’”格式语义语用分析

“有点（儿）＋‘小＋adj’”作为近几年出现并流行的格式,其组合时的临时性特征以及丰富的语用意义使得它成为青年群体的口头禅。在已有研究的基础上,通过定量与定性分析,从音节、语义特征、形容词的属性三个方面探讨了该格式中adj的语义特征以及该格式语用意义的成因。     

NM7Ti合金棒材超声波探伤异常反射波原因分析

在对超导用Nb47Ti合金棒材进行超声波探伤检查时,发现棒材多处存在异常反射波现象．通过低倍组织、高倍组织、变形实验、XRE和成分分析等,对异常反射波的原因进行了分析．结果表明,造成棒材超声波探伤杂波异常反射波的根本原因是成分的不均匀、异常反射波区域的Nb元素含量较高、低倍组织存在“亮斑”等,且锻棒经过大变形改锻仍无法消除异常反射波．     

釉的化学组成与导热系数之间关系的研究

本文采用在基础釉中添加氧化物的方法,研究了SnO_2、Cr_2O_3、Co_2O_3、Fe_2O_3和CuO对釉的导热系数的影响,建立了釉的导数系数与SnO_2、Cr_2O_3、Co_2O_3、Fe_2O_3和CuO含量之间的经验关系式,并从微观结构的角度进行了分析和探讨。     

傅科棱镜的空气层厚度对偏振光的影响

全内反射时由于表面波的存在,直接影响傅科棱镜出射偏振光的纯度。本文提出为了获得高纯度的偏振光,利用消光比的大小来选择空气层厚度的方法。     

Influence of different surface treatments of H13 hot work die steel on its thermal fatigue behaviors

Thermal fatigue checking is general failure of hot work die steels,which is relative with the structures and properties of the steels and the stress alternated during the employment.The Uddeholm test method on thermal fatigue is used to compare the behaviors of different samples,which are treated with plasma nitriding 、plasma sulfur-carbon-nitriding、boronizing or not treated.The results show that the nitriding improves the thermal fatigue property of the tool steel,while the plasma sulfur-carbon-nitriding and the boronizing impair the property.The mechanisms are induced as follows .By increasing the hardness and changing the stress distribution in the surface layer,surface treatment can decrease the plastic deformation and the temsile stress during the cycling.Therefore,the generation and growth of the cracks are restrained.On the other hand,as results of surface treating,in the surface layer the toughness declines and the expanding coefficient ascendes;the latter change caused the strengthening of the tensile and compressive stress during the cycling.Thus the resistance to thermal fatigue is weakened.Whether or not the surface treatment is favor to thermal fatigue of tool steels relies on which factor is dominant.     

论中国花鸟画构图

构图是画家向观众传递思想情感的一道重要的表现手法.一幅完美的构图,是要经过作者的苦心经营、精心锤炼才能达到的.     

Inclusive practices at the teacher and class level: the experts’ view

One concern for teachers and schools is how to implement inclusion. This paper examines its implementation at the teacher and class level in Styria, (a state in Austria). To do so, a qualitative study with expert interviews was conducted. Twenty-five experts from seven schools and four Centres for Inclusion and Special Education were interviewed. This paper highlights four areas: (1) teachers’ attitudes; (2) co-teaching; (3) individualised instruction; and (4) classroom composition. The results showed that for the inclusion process to be successful, positive attitudes towards inclusion of children with special educational needs are critical. Furthermore, negative attitudes towards inclusion can change if resources and support systems are available. Like every change process, high reliability is necessary to promote inclusion. The special education teacher was seen as an important resource, thus meaningful cooperation between the general and special education teacher was considered as a first step in implementing inclusive education. The use of differentiated teaching methods, along with individual initiatives, were other indispensable practices. According to the experts, these differentiated teaching instructions are implemented better in heterogeneous classrooms, meaning that a classroom composition that corresponds to the normal heterogeneity of the student population is seen as an essential part of teaching.