Using Action Research to Improve Communication and Facilitate Group Work in a Multicultural Classroom: A South African Case Study

This study started with problems that my colleagues (and I) were experiencing with interaction and intercultural communication among students in our diverse classrooms. Educators were also experiencing difficulties in motivating students to work effectively in groups. The purpose of this paper was to seek solutions to these problems by exploring variations of the group oral assessment structure in a multilingual and multicultural context. Four phases of assessments were conducted at two tertiary institutions in South Africa using a combination of action research and a participatory approach. Not only did this study succeed in addressing the problems but it also revealed the added benefits of using an action research methodology.     

EXISTENCE AND UNIQUENESS AND STABILITY OF SOLUTIONS FOR STOCHASTIC IMPULSIVE SYSTEMS

This paper studies the existence, uniqueness, and stability of solutions for stochastic impulsive systems. By employing Lyapunov-like functions, some sufficient conditions of the global existence, uniqueness, and stability of solutions for stochastic impulsive systems are established. Furthermore, the results are specialized to the case of linear stochastic impulsive systems. Finally, some examples are given to illustrate the applications of our theory.     

略论互联网对高校党建工作的影响及对策

分析了互联网对高校党建工作带来的挑战和影响,提出利用网络开展高校党建工作,成为当前高校党建工作的一个重要途径。互联网时代高校党建工作必须紧紧围绕培养德智体美全面发展的社会主义建设者和接班人这一中心任务,充分发掘和利用网络的积极作用,不断创新党建工作形式,从而真正提高党建工作的实效性。     

谨防术语翻译的“张冠李戴” ——以航海术语翻译为例

译者先入为主,将不熟悉的某一领域的术语翻译成熟悉的另一领域的术语或一般用语,这种错误定位,是术语翻译中常见的问题之一。翻译术语前译者必须意识到术语所属领域,然后尽可能选择语义对等的目的语术语。否则,译语的行外话会影响语言交际。     

分析哲学视阈下学生工作方法的新思维

分析哲学对于学生工作具有方法论意义上的价值.分析哲学的理论精髓和特点,不仅对学生工作方法的选择和形式创新等具有重要的启发性,而且通过寻找两个学科之间的连接路径,还可以为后续相关研究中实现多擘科之间的融合与交叉打下基础.     

扩招后高校排球课教学问题及对策

分析高校扩招政策使教学规模扩大后,高校排球课教学面临着诸如场地器材紧张、学生基础薄弱、师资力量不强等诸多现实问题,并就此探讨和提出相应的对策．     

单位球上F(p,q,s)空间到β~α空间的加权Cesàro算子

分别给出了单位球B上空间F(p,q,s)到空间β~α的加权Cesàro算子T_g为有界算子和紧算子的充要条件.     

关于泰勒公式及其应用的思考与讨论

泰勒公式是高等数学中非常重要的一部分内容,它在分析和研究一些数学问题中,有着广泛地应用,浅谈泰勒公式在研究方程根的存在性和唯一性、求极限、近似计算以及证明等式或不等式等问题中的方法和技巧.     

探针馈电的分层球状微带天线矩量法分析

采用以Rao-Wilton-Glission(RWG)为基函数的矩量法推导了分层球状微带天线的阻抗矩阵计算公式.在计算探针和贴片连接处的阻抗矩阵元素时,通过一种三角形对拆分方式简化了矩阵计算过程,并通过替代避免线积分奇异问题. 提取了源、场点位于同一层媒质和不同层媒质时并矢格林函数的渐进项,以加快格林函数无穷项级数收敛速度. 计算了一副球状微带天线,输入阻抗计算结果与文献结果吻合良好,说明分析方法的正确性和有效性.     

Functional and physical communication between oncoproteins and tumor suppressors

The discovery of oncogenes (c-onc’s) and tumor suppressors (TS’s) has led to the concept that cancer arises from defects in each of these classes of genes or their products. More recently, it has been appreciated that c-onc and TS proteins often affect one another’s functions. Within this context, I review the two classical TS’s, p53 and the retinoblastoma protein, and the consequences of their inactivation. The various forms of genomic instability (GI) that underly the high mutation rates of transformed cells are then discussed. Particular emphasis is placed upon the concept that GI is not only an integral part of the transformed state but is a prerequisite. Increased oxidative DNA damage, and/or an inabiliy to repair it, can lead to GI. The review then discusses recent observations showing that loss of the TS protein peroxiredoxin 1 (prdx1) and increased expression of the c-onc protein c-Myc, each leads to increased oxidative DNA damage. The critical nature of the c-onc-TS interaction is underscored by that occurring between prdx1 and c-Myc, with the former protein regulating the production of DNA-damaging reactive oxygen species by the latter. The intimate association between these proteins and others serves as a paradigm for the exquisite balancing act that c-onc’s and TS’s must maintain in order to properly control normal DNA replication and cellular proliferation while simultaneously minimizing the acquisition of potentially neoplastic mutations. Received 10 May 2005; received after revision 3 July 2005; accepted 19 July 2005