盐碱化草地各群落中植物种多样性的分析     

苏志刚  熊缨 《深圳信息职业技术学院学报》2011,(3):56-61

自然保护已成为人类面临的重大问题之一,而自然保护的基本内容是保护生物多样性。羊草草原是松嫩平原上具有一定耐盐碱性的重要草场资源,由于过度放牧而导致让盐碱化加重,出现了植物种类组成各异的群落。盐碱化与植物多样性的关系如何,是本文研究的宗旨。本文从物种的丰富度、均匀性和多样性三个测度水平来探讨分析了物种分布格局随盐碱化梯度的变化趋势。  相似文献   

Personal ties,group ties and latent ties: connecting network size to diversity and trust in the mobile social network WeChat     

Cuihua Shen 《亚洲交流杂志》2019,29(1):18-34

This study examines whether and how network size is associated with diversity and trust in the mobile SNS context. Online survey data (N?=?327) on Chinese WeChat users reveal that both personal network size and extended network size are positively related to the diversity of people’s social networks. We believe the explanation for these findings may be that the affordances of WeChat provide users opportunities to accumulate a wide spectrum of relations ranging from strong ties, weak ties to latent ties and thus a larger network can enable them to access to more diverse resources. We also find that extended network size is negatively related to people’s trust in their WeChat contacts. We argue that the increasing size of the extended network may reduce familiarity, certainty and accountability that assumed to be prerequisites of trust.  相似文献   

多元化——民族贫困地区农村基础教育课程文化建设的价值取向     

蒋士会  唐盈盈 《江苏教育研究》2011,(10):8-11

民族贫困地区农村基础教育是我国基础教育体系中的一个重要组成部分。新课改要在民族贫困地区农村取得成功,就必须考虑其文化多元的特殊文化背景,从深层的文化层面对基础教育课程文化进行重塑。实现课程目标文化、课程内容文化、课程实施文化和课程评价文化的多元化。  相似文献   

西方多元文化教育政策的理论局限及其超越     

常永才  呼和塔拉 《当代教育与文化》2011,3(6):59-63

长期以来较为盛行的多元文化主义理念,在理论上基于本质主义性质的文化概念,对文化多样性持相对主义立场,实践上采用单向地突出弱势文化的补偿性课程模式,从而在促进互惠性文化对话和社会整合等方面存在局限。而后来兴起的文化互动主义,针对这些局限,强调不同文化间的相互尊重和成功交流,促进所有学生的发展与社会团结,因此日益受到国际社会重视。  相似文献   

Indigenous students' persistence in higher education in Australia: contextualising models of change from psychology to understand and aid students' practices at a cultural interface     

Andrew Day  Vicky Nakata  Martin Nakata  Gregory Martin 《高等教育研究与发展》2015,34(3):501-512

The need to address the substantial inequities that exist between Indigenous and non-Indigenous Australians in higher education is widely recognised. Those factors that affect the performance of Indigenous students in tertiary education have been reasonably well documented across different institutions, disciplines, and programme levels but there has, to date, been less consideration of the processes by which Indigenous students either persist or desist in higher education. This paper aims to present a conceptual understanding of academic persistence that can inform the delivery of tailored academic support interventions to Indigenous students who are at high risk of leaving higher education.  相似文献   

A structure‐agency perspective on young children's engagement in school science: Carlos's performance and narrative     

Maria Varelas  Eli Tucker‐Raymond  Kimberly Richards 《科学教学研究杂志》2015,52(4):516-529

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Queering Constructs: Proposing a Dynamic Gender and Sexuality Model     

T. J. Jourian 《The Educational forum》2015,79(4):459-474

Abstract

Higher education educators commonly understand social identities, including gender, to be fluid and dynamic. Lev's (2004) model of four components of sexual identity is commonly used to demonstrate the fluidity of sex, gender, and sexuality for individuals, but it does little to address the fixedness of those constructs. Through a multipronged intersectional framework and by centering trans* -students, this article proposes a more dynamic model for gender and sexuality.  相似文献   

新媒体语境特征与用户态度关系构建的实证研究     

薛可  阳长征  余明阳 《湖南师范大学社会科学学报》2015,(3):153-160

通过对上海市民进行抽样调查,并使用结构方法模型对新媒体语境下的受众社会态度倾向进行实证研究,得出如下结论：新媒体语境通过社会懈怠对用户风险偏好和群体极化倾向产生正向影响,对责任与公平意识、道德发展以及亲社会倾向产生负向影响;媒体接触频率在新媒体与社会懈怠关系中具有显著正向调节作用,而媒体接触的多样性在其中的调节作用并不明显;在主效应和调节作用中,均表现出对男性的影响大于对女性的影响,其影响大小随着年龄的增加而呈减弱趋势。  相似文献   

Beginning teachers and diversity – why the need for extended critical professional support     

Vijaya M. Dharan 《Asia-Pacific Journal of Teacher Education》2015,43(1):61-74

This article draws from a qualitative study of seven beginning teachers’ perceptions of diversity over a period of 6–18 months. The study found that while initial teacher training had broadened their understanding of diversity and its implication for teaching, it was established pedagogical practices in their schools that influenced the novices’ ongoing understanding of responsiveness to learner diversity. For these novices, the influence of the structures and systems of their school contexts began to restrict their pedagogical stance. Based on the reported findings and wider research data, the article argues the need for ongoing critical professional support for beginning teachers who can deepen their understanding of learner diversity and its pedagogical implications. It underscores the importance of a genuine partnership between schools and teacher education providers to enable the continuation of critical professional support for novices, particularly in contexts where there are no mandatory links between preservice programmes and beginning teaching like New Zealand, where this study was undertaken. The author contends that it is unrealistic otherwise to expect beginning teachers not only to challenge entrenched practices but also to sustain the efforts of initial teacher education programmes in preparing them to be responsive to diverse learners.  相似文献   

Leaders learning from leaders as an emergent action learning strategy     

Carol A. Mullen  Mariela A. Rodríguez  Tawannah G. Allen 《Action Learning: Research and Practice》2015,12(3):344-355

This account of practice describes what three executive leaders in a professional association have learned about action learning and their own practices of organizational renewal. Data are approached narratively and stories are told from the perspectives of diverse educators’ experiences, agency, and expertise. Mature organizations can be revitalized and diversified through the action learning of executive leaders who integrate a new and diverse faculty body into the governance structure and decision-making process. The goal of facilitating diversity goals for established organizations has relevance for universities, schools, businesses, and other learning environments. Public conversations can strengthen the diversity-oriented outreach missions of professional organizations.  相似文献