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| Drivers of change and conservation needs for vertebrates in drylands: an assessment from global scale to Sahara-Sahel wetlands 期刊论文
发表期刊: EUROPEAN ZOOLOGICAL JOURNAL. 出版年: 2021, 卷号: 88, 期号: 1, 页码: 1103-1129
作者: Brito, J. C.; Del Barrio, G.; Stellmes, M.; Pleguezuelos, J. M.; Saarinen, J.
  收藏 | 浏览/下载：29/0 | 提交时间：2022/02/12
Biodiversity threats climate change conservation actions land degradation research needs sustainable human development |
| An investigation into the prevalence and use of code switching practices in grade 8 mathematics classrooms in the Ohangwena region of Namibia : a case study 学位论文
学位授予机构: Rhodes University, Faculty of Education, Education. 出版年: 2013
作者: Shilamba;Julia Ndinoshisho
收藏 | 浏览/下载：9/0 | 提交时间：2019/11/29
DescriptionThis research report focuses on an investigation of the prevalence and nature of code switching practices in grade 8 mathematics classrooms in the Ohangwena region of Namibia. The existence of code switching in these classrooms was established by administering a survey to all grade 8 teachers in the region while the nature of these practices was explored by interviewing and observing selected teachers using a case study research methodology. The data from the survey was analysed quantitatively using descriptive statistics while the qualitative data from the case study which comprised of audio and video transcripts was analysed within the framework of Probyn’s (2006) code switching categories. These categories looked at code switching in terms of: explaining concepts clarifying statements or questions emphasising points making connections with learners’ own contexts and experiences maintaining the learners’ attention with question classroom management and maintaining discipline and affective purposes. The study found that code switching is widespread in most of the grade 8 mathematics classrooms in the Ohangwena region. It also revealed that the teachers’ code switching practices aligned well with most of Probyn’s framework. The criterion of maintaining learner’s attention with question was however not found in this study. The results of the study showed that teachers code switch because the majority of the learners’ language proficiency is not good. Code switching is mostly used as a strategy to support and promote learners understanding in mathematics. The study recommends that it is high time that code switching is acknowledged as a legitimate practice and recognised as an important and meaningful teaching strategy to assist learners who are learning mathematics in their second language. Code switching needs to be de-stigmatised and teachers should be supported in using this practice effectively and efficiently. |
| Climate Change and Wildfire Impacts in Southwest Forests and Woodlands 学位论文
学位授予机构: College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ). 出版年: 2012
作者: Rogstad; Alix; Crimmins; Michael; Garfin; Gregg
收藏 | 浏览/下载：5/0 | 提交时间：2019/11/29
Climate change Wildfire Southwest Woodlands Forest Drought Research needs Impacts Fire Variability Land management Arizona |
| Access to Affordable and Nutritious Food: Measuring and Understanding Food Deserts and Their Consequences. Report to Congress. 科技报告
报告编号: PB2009112529. 出版年: 2009
作者: Ver Ploeg, M.
收藏 | 浏览/下载：33/0 | 提交时间：2019/11/30
Human nutrition Food supply Access Population Supermarkets Food industry Grocery stores Food consumption Households Communities Workshops Economic analysis Public health Interventions Research needs Food deserts |
| Desertification: Problems and challenges 期刊论文
发表期刊: ANNALS OF ARID ZONE. 出版年: 2000, 卷号: 39, 期号: 3, 页码: 363-371
作者: Dregne, HE
收藏 | 浏览/下载：9/0 | 提交时间：2019/11/28
UNCOD CCD desertification status assessment research needs |
| Research and technology 81 科技报告
报告编号: NASA-TM-84164, NAS 1.15:84164. 出版年: 1981
作者: [unavailable]
收藏 | 浏览/下载：6/0 | 提交时间：2019/11/30
AEROSPACE ENGINEERING NASA PROGRAMS RESEARCH FACILITIES SPACE EXPLORATION ASTRONOMY ATMOSPHERIC PHYSICS CLIMATOLOGY COSMIC RAYS DATA PROCESSING EARTH MAGNETOSPHERE GAMMA RAY OBSERVATORY HYDROLOGY LANDSAT SATELLITES NEEDS (DATA SYSTEM) SATURN (PLANET) SOLAR FLARES SOLAR PHYSICS SOLAR WIND SPACE PLASMAS STDN (NETWORK) TECHNOLOGY UTILIZATION WEATHER |
