生态语言学角度下的双语现象浅析

生态语言学旨在把语言作为物种,研究其与环境之间的相互作用关系。从生态语言学角度可将双语现象解释为语言群体中多样化的语言使用导致了语际间的竞争和共存,造成语言的寄生和共生。双语现象在语言生态环境中形成的因素包括外在生态因素和内在生态因素,二者的共同作用导致两种不同的语言物种在语言群落中形成相互影响、互利共生的关系。     

An Examination of the Effects of Mediated Intragroup and Intergroup Interactions among Latino/a Characters

Content analytic work has consistently shown that Latinas are consistently found to be one of the most sexualized social groups in the media. In this study we experimentally examined the implications of exposure to the sexualized depiction of Latinas (among non-Latino viewers), when presented in the media in a within group context (Latina-Latino portrayal) and an intergroup context (Latina-White male portrayal). Findings suggest that when in an intergroup interaction, sexualized Latinas are evaluated more favorably and elicit less negative emotion than sexualized Latinas in an intragroup interaction. Implications are discussed within the context of mediated intergroup contact and intergroup emotion.     

Predicting student success in open and distance learning

This paper reviews some of the ways in which student success can be predicted in conventional and distance education. Predicting such success is particularly important for new students where the pre‐course start information available is sometimes slight and withdrawal often occurs very early in a course. It suggests that, in such cases, statistical methods involving logistic regression analysis are more useful than questionnaires or tutors’ opinions. Identifying students with low probability of success allows support to be targeted on them. However, there are ethical dilemmas to do with targeting support and openness with students about the results of any analysis.     

Is ‘Closing the Gap’ Enough? Ngarrindjeri ontologies,reconciliation and caring for country

This article is concerned with Ngarrindjeri nation building in the ‘contact zone’ with the Australian settler state by decentring the colonizer within a range of bureaucratic regimes. Ngarrindjeri engagement with natural resource and cultural heritage management will be used to illustrate the relationship between globalization, community governance, education, sustaining ‘culture’, Indigenous well-being, and reconciliation and its links to the Australian government Closing the Gap initiatives. This article connects Ngarrindjeri lived experience to the theorization of processes for self-recovery and social transformation that open possibilities for broad-based local and global coalitions, which include political solidarity in the interests of just Indigenous ‘reinhabitation’ and decolonization.     

Utopian totalism versus utopian realism: a reply to Darren Webb

Debate continues about the relationship between schools divided on ethno-religious lines and their implications for social cohesion. One argument against the existence of separate schools is that they limit opportunities for children from different groups to engage with each other, promoting intergroup suspicion and sectarianism. Using intergroup contact theory we examine the impact on outgroup attitudes of pupils attending mixed and separate post-primary schools in Northern Ireland. Data were collected through a survey of more than 3,500 pupils and analyses show that, irrespective of school type, intergroup contact at school is strongly associated with more positive orientations to the ethno-religious outgroup. The policy implications of these findings are discussed.     

聚苯乙烯微球的AFM研究

采用接触式原子力显微镜（AFM）方法观测聚苯乙烯微球用去离子水和甲醇分散后在云母表面的形貌变化及与衬底之间的作用;初步讨论了分散剂、放置时间、分散时间等对聚苯乙烯微球的影响。结果发现去离子水做为分散剂时,聚苯乙烯微球在云母表面具有单分散性,而以甲醇做为分散剂时则具有多分散性。     

"双核"经济中心理论下的京津冀城市群发展设想

在城市群的发展过程当中,我们日益面临类似于计算机科学发展过程中曾经面临的问题。比如,在计算机中,双核架构有效解决了单核架构的瓶颈制约,而在城市群中尤其是在京津冀城市群中,单极经济中心发展战略正面临诸多无法克服的硬性约束。为此,本文提出了"双核"经济中心的架构,并认为"双核"经济中心是资源靶向性、规模经济及有机疏散理论的内在要求。在此基础上,本文进一步分析了京津冀城市群实行"双核"经济中心的基础及必要性。最后,在借鉴计算机双核之间联系和分工机制的基础上,提出了城市群"双核"之间的联系和分工机制,力求对城市群尤其是京津冀城市群提供一定的理论和实施策略指导。     

城市对外经济联系量与地缘经济关系的匹配分析——以南京市为例

在城市或区域规划研究中,常分别通过城市对外经济联系量、欧氏距离法测算城市或区域之间的联系强度、竞争与合作关系。本文尝试开展两者的协同研究,以南京市为例,通过测算其与不同城市之间的对外经济联系量、地缘经济关系及其匹配关系,为南京市城市或区域规划提供决策支撑,为今后开展类似研究提供研究思路和方法框架。     

基于齿轮形修磨轮的蜗杆与齿轮传动齿面接触分析

基于齿轮形金钢面修磨轮 ,TI蜗杆才能被精修磨 ,由此形成一种 TI蜗杆与渐开线斜齿轮的啮合传动型式 .本文对于这种新型传动副 ,建立了数学模型 ,推导出了若干基本方程式 ,并且进行了齿面接触分析 .理论分析表明这种蜗杆传动具有许多优点 .     

表面形貌和表面的摩擦学作用

该文叙述了表面形貌的数学模型;分析了表面接触的力学过程;文章还阐述了部分ＥＨＬ的形成原理并介绍了表面摩擦学行为的观察分析技术。