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1.
植物多样性的分子生物学研究方法 总被引：4，自引：0，他引：4
植物多样性是生物多样性的基础，它的保护和可持续利用是维持全球经济健康发展、全球气候稳定的重要因素之一，也是保持我们赖以生存环境的重要内容。对植物多样性的分子生物学研究方法进行了综述，并着重介绍了分子标记的最新进展及其在植物多样性研究中的广泛应用。 相似文献
2.
Madhav Gadgil 《Resonance》1996,1(9):8-13
Diversity of life is unevenly distributed over the surface of the earth; especially rich are the tropics, mountainous regions and island archipelagos. Lying at the trijunction of Africa, temperate Eurasia and tropical Southeast Asia and enjoying a great diversity of environmental regimes, India ranks about the 10th amongst nations in terms of its diversity of species. 相似文献
3.
Strategic processes are a form of procedural knowledge in which a child knows how to enact a given strategy that improves their capability in problem solving or learning. The solution strategies children use are critical components of their learning, especially in mathematics. Children vary substantially in their knowledge and use of different strategies, and much research has focused on intraindividual strategy variability. However, we do not know if classrooms that evince a broader variety of strategies across children are related to higher mathematics achievement. We investigated the diversity of arithmetical strategies within classrooms and examined the relations between strategy diversity and mathematical achievement as children moved from preschool to kindergarten and first grade. These analyses were applied to data from a large-scale experiment involving 1305 children from 42 schools and 106 classrooms. We created and applied a new method of measuring classroom strategy diversity and related this measure to children’s concurrent and subsequent math achievement. We found that early strategy diversity was strongly related to achievement, but in subsequently, less diversity was so related. We compared these results to the predictions of three theoretical categories and found that our results mainly supported one. 相似文献
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Michael Cross 《Higher Education》2004,47(4):387-410
Increasingly the social, educational, cultural,linguistic, religious and racial diversity ofSouth African society is finding expressionwithin South African institutions of highereducation. Consequently, ``diversity'',``diversity issues'' and ``diversification'', havebecome part of the education debate and policy,and pose new challenges to South Africantertiary institutions. Most institutions areattempting to respond to these challengeswithin the context of a transformation processwhich impacts on every aspect of academic lifefrom student access and support, outreachprogrammes, staff recruitment and retention, toacademic programme development, research,scholarship and the social and learningenvironment on campus. This paper looks at howSouth African higher education institutionshave met these challenges. It highlights howthe ideas, initiatives or practices arounddiversity have been appropriated and made partof the mainstream intellectual and academicdiscourses. It also investigates the social andepistemological conditions of possibility formeaningful scholarship and curriculum practicesin addressing the challenges posed by socialdiversity on campuses. More specific questionsin this regard include: What counts asknowledge in diversity scholarship? Whoproduces and disseminates it? Who accesses itor utilises it? What is its space in thecurricula? 相似文献
6.
英语的全球化与语言的多样性 总被引：9，自引：0，他引：9
李丽生 《云南师范大学学报(哲学社会科学版)》2005,37(1):104-107
伴随全球化进程，英语已成了当今世界的主导性语言，并在全球范围传播和普及。英语的全球化给世界语言多样性的生态样式带来了极大的破坏。因此，及时采取措施对策，反对英语的霸权，保护世界语言多样性的生存样式已是刻不容缓。 相似文献
7.
森林旅游与生物多样性保护 总被引：1，自引：0，他引：1
本从森林旅游的可持续发展的角度，强调生物多样性保护的重要性，从分析森林旅游中存在环境问题的严重性入手，探讨森林旅游生物多样性保护的环境因素，从而阐述了森林旅游中生物多样性保护的策略。 相似文献
8.
Reginald Wilson 《About Campus》1996,1(2):4-30
A noted scholar explains why achieving cultural diversity on campus requires nothing less than a complete transformation of our institutions of higher learning. This means reinventing everything, from the canon to the classroom and beyond. 相似文献
9.
A joint cooperation diversity and symbol mapping diversity （SMD） strategy is proposed for cooperative packet retransmission system with high-order modulation such as 16QAM. Substantial SER/BER （symbol error rate/bit error rate） gains result from multiple packet transmissions over independent paths and distinct bit-to-symbol mappings for each packet transmission. The SER/BER performance of relay assisted retransmission system is analyzed. Simulation results show that the joint-diversity strategy can provide more BER gains than other relaying strategies （i.e., decode-and-forward and constellation rearrangement relaying strategies） when no relay makes a decision error; but if some relays make decision errors, the joint-diversity strategy outperforms other relaying strategies only when the relays are closer to the source than to the destination. 相似文献
10.
This study examined classroom-level contributors to an acceptance of diversity in publicly supported pre-kindergarten classrooms across 11 states. Classroom composition, process quality, and teacher characteristics were examined as predictors of diversity-promoting practices as measured by the ECERS-R, acceptance of diversity construct. Findings reveal that emotional climate, bilingual classrooms, family poverty levels within classrooms, and Latino teacher ethnicity are predictive of diversity-promoting classrooms; while classroom-level ethnic sameness to teacher prohibits diversity-promoting practices in pre-kindergarten classrooms. 相似文献
11.
Madhav Gadgil 《Resonance》1996,1(12):17-25
The evolutionary history of life is one of continual expansion, of coming into being of increasingly greater diversity of more complex organisms, colonising ever newer environmental regimes. It is a cosmic drama that has become ever more elaborate, as it retires some, but inducts an even larger number of increasingly sophisticated actors into its fold. But the process has by no means been monotonic. It is as if the stage is cleared from time to time to make for fresh beginnings, with major bouts of extinction. Humans are amongst the most complex products of evolution having in turn populated the world with ever growing numbers of complex artefacts. These artefacts are now threatening to overwhelm the diversity of life. But humans may one day engineer life capable of surviving in outer space, and thereby trigger off a new phase of expansion and diversification of living organisms. 相似文献
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《Journal of Further & Higher Education》2012,36(4):536-551
Diversity and inclusivity in higher education and health care have gained prominence in recent years and this means that institutions’ educational programmes need to incorporate teaching and learning that is responsive to diversity. This paper reports findings from a diversity teaching and learning mapping project. The aim of the mapping project was to map out when and how the various themes on diversity in all course curricula are addressed in a university’s School of Nursing. The project adopted the following methodologies: documentary reviews of curriculum documents, handbooks and timetables, followed by qualitative interviews with module leaders and teachers. The documentary reviews provided a map of where diversity teaching and learning tended to occur and the interviews yielded six major themes central to diversity: definition, importance, confidence, challenges, resources and future implications. The results suggest that mapping does provide an important way of comparing courses and highlighting aspects which need attention. The results provide directions for curriculum development teams to ensure that diversity issues are transparently addressed in all courses in the School of Nursing. Furthermore, the insights derived from the findings steered the project team to develop Web CT resources on some of the diversity themes such as an introduction to diversity and inclusivity, spirituality, ethnicity and diversity. Plans are in place to develop further diversity teaching and learning resources in the light of findings which will be used in staff development programmes. 相似文献
14.
The diverse and heterogeneous classroom is considered one of the best vehicles for providing both effective education and
equal opportunity to students of diverse sociocultural backgrounds and academic abilities. This study explores the impact
of the social and academic diversity of the class on teachers' perspectives about their schools as a workplace. Data gathered
from an anonymous questionnaire administered to all secondary-school teachers in a medium-size industrial city in lsrael indicate
that classroom diversity is correlated negatively with the average academic ability of the classroom, and positively with
class size and frequent disciplinary problems. Findings also show that less experienced teachers are more likely to be assigned
to diverse classrooms. The study suggests that the effects of classroom diversity on teachers' perspectives of their workplaces
are strong and significant.
Paper presented at the annual meeting of the University Council of Educational Administration, Minneapolis, 1992. The authors
acknowledge the comments and assistance of Audrey Addi. This research was supported by the Department of Education, City of
Petach Tikvah, Israel. 相似文献
15.
遗传多样性作为多相分类的主要手段,在根瘤菌的分类和多样性研究中备受关注.随着根瘤菌寄主研究范围的不断扩大和分子生物学技术的不断应用,根瘤菌的遗传多样性特征将得到更深入的揭示.本文综述了根瘤菌遗传多样性的组成、研究现状及研究方法进展,以期为细菌分类工作者提供一定的研究依据. 相似文献
16.
Mapping cultural diversity through children's voices: From confusion to clear understandings 
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下载免费PDF全文 Christina Hajisoteriou Christiana Karousiou Panayiotis Angelides 《British Educational Research Journal》2017,43(2):330-349
This research examines children's conceptualisations of cultural diversity. In particular, this project examines the following two research questions: how do children define and understand the concept of cultural diversity; and what do they perceive as the implications of cultural diversity on their daily lives? To this end, interviews were carried out with 40 (immigrant and native) students, aged 11 to 12, at five primary schools in Cyprus, which presented high concentrations of immigrants. On the basis of our analysis of the data, the participant children appeared to perceive cultural diversity in terms of two contrasting perspectives. On the one hand, they viewed cultural diversity in terms of the cultural‐deficiency perspective. Such perceptions stemmed from the model of monoculturalism implying the need to assimilate the culturally ‘different’ in order to counteract the negative consequences of cultural diversity. On the other hand, the same children also perceived cultural diversity in terms of cultural celebration. To this end, some children drew upon the model of multiculturalism to define cultural diversity as a culture‐enriching and culture‐celebrating process, pointing to folkloristic activities including traditional music, dance and food. Nonetheless, few of the participant children—both Cypriot and immigrant—defined cultural diversity in terms of the model of interculturalism, pointing to the intercultural exchange that stems from ‘real’ friendship development between natives and immigrants, equality of rights and inclusion. As the participant children appeared to confuse the meanings and languages of cultural diversity, this paper concludes with suggestions on teacher practices to ‘crystallise’ children's views. 相似文献
17.
Abstract Prevailing values of equity and social justice are increasingly espoused in the mission and policy statements of public institutions, organizations, and agencies. In higher education, teacher preparation programs are considered to be key contributors to the cultivation of mores of inclusiveness, where diversity is embraced and appreciated in its multitude of forms. The purpose of this qualitative study was to examine the diversity dispositions of a group of preservice and inservice teachers participating in a multicultural education course at a university in the deep southern region of the United States. Data were collected in the following ways: (a) autobiographical accounts that participants compiled and shared; (b) responses to abbreviated biographies in an online discussion forum; (c) face‐to‐face discussions of issues related to goals of equity, tolerance, and social justice in schools; and (d) instructor observations of participants' interactions with each other. The research revealed that in the electronic forum the teacher candidates and practicing teachers were particularly candid in reflecting upon and revealing their cultural roots, perceptions, and experiences and validated many—but not all—‐peer self‐reports of marginalization. Three major diversity dispositions emerged in the data analysis: (a) cultural consciousness, (b) intercultural sensitivity, and (c) commitment to social justice. The study also illuminated the challenge inherent in critically examining and sharing diversity dispositions when considering issues of discrimination, prejudice, and segregation in a multicultural setting. Although limited in scope and generalizibility, the findings provide insights into ways of framing tolerance sensibilities and for improving educators' capacities to reassess candidates' diversity dispositions. 相似文献
18.
AbstractThis paper discusses contradictory imperatives in contemporary Australian pedagogy – the notions of ‘controversy’ and ‘diversity’ as they relate the subjects of genders and sexualities. It is a common view that both gender and sexuality are important organising features of identity, society and politics. Consistent effort is made in the Australian educational context to combat discrimination, prejudice against sexually, and gender ‘diverse’ people. However, the state’s commitment to diversity policies must be balanced with a secondary focus on appeasing those who are hostile to non-heteronormative expression, or who view such expression as inherently ‘political’ in nature and therefore inappropriate for the school setting. Australia has arguably demonstrated this dilemma recently in two notable controversies: an intervention in planned school screenings of Gayby Baby, a documentary exploring the experience of children in same-sex families, and media furore over the trans-positive All of Us teaching kit. Using these case studies, this paper explores the competing imperatives of controversy and diversity, commenting on the tendency for the lives and experiences of LGBTIQ people becoming consequently politicised. To do so, is arguably detrimental to the meaningful participation of LGBTIQ people as social citizens. 相似文献
19.
In the United States, colleges and universities have recently increased attention to diversity of faculty, staff, and student populations. Among the manifestations of the diversity movement are calls for modifications of general education courses to include coverage of cultural or human diversity. At the University at Albany, one of the first human diversity courses was offered by the School of Criminal Justice. The authors review the objectives of the course, the teaching materials selected, and students' reactions to the first offering of the course. Among the most troubling reactions was students' resistance to history, to explorations of context of criminal justice practice, and to examination of current discriminatory policy and practice. 相似文献
20.
AbstractAlthough social acceptance of gender and sexuality diversity is growing in Australian society, in schools, visibility and inclusion of knowledge pertaining to those who are gender- and/or sexuality-diverse, such as lesbians, gay men and transgender people, remain marginalised. This may be due, in part, to a belief that parents are opposed to such content inclusions in their children’s education; yet, virtually no Australian research supports this belief nor have parental perspectives on gender and sexuality diversity inclusion been specifically examined. This paper draws on a broader research study that examined New South Wales parents’ perceptions about the visibility of gender and sexuality diversity and the inclusion or exclusion of related content in school curriculum. It focuses on one particular focus group comprised of only mothers who lived in a specific enclave of Sydney known for its gender and sexuality diversity. The discussion highlights their awareness of gender and sexuality diversity and the dynamics surrounding it; and their perceptions of local school approaches to, and limitations around, gender and sexuality diversity in school curricula, policy and practices, despite potential support for it. 相似文献