The current generation of Massive Open Online Courses (MOOCs) operate under the assumption that good students will help poor students, thus alleviating the burden on instructors and Teaching Assistants (TAs) of having thousands of students to teach. In practice, this may not be the case. In this paper, we examine social network graphs drawn from forum interactions in a MOOC to identify natural ...

abstract. the purpose of this study was to investigate the effects of topographical factors on the classification of grassland plant communities in the rangelands of ghorkhud, northern khorasan province, iran. for sampling, land units were specified. a floristic list was prepared using minimal area method based on the nested plot (braun-blanquet method). 116 10m2 furrows were selected. within e...

This article presents a theory of dynamic virtual communities. It places the communities into a matrix according to the commercial purpose and organizational structure. The model is then elaborated upon to show the dynamic nature of virtual communities. The descriptions of the model attempts to show the differences between different types of communities from a common point of view. The model at...

The author contends that healthy communities must be both environmentally and socially sustainable, given that health depends on the quality of the built and natural environments, and that global change resulting from the industrial economy is affecting the web of life. He argues that suburban sprawl wastes scarce resources and disproportionately places those resources in the hands of suburban ...

This study aimed to overcome the researchers' extreme attention to essentially qualitative methods in research on language learners' imagined communities and move towards quantification in order to achieve a more tangible image of this construct. To do so, the present researchers followed three main phases. First, a hypothesized model of language learners' imagined communities with eight compon...