35 research outputs found
CREATING EFFECTIVE ONLINE DISCUSSIONS: OPTIMAL INSTRUCTOR AND STUDENT ROLES
Get PDFTeaching online courses is unexplored territory for many instructors. Understanding how to use the powerful learning techniques involved in cooperative group learning in an online context is imperative. This paper is a first attempt to explore the dynamics of learning groups in the context of online discussion forums. Given the spread of online learning, the importance of this kind of research cannot be overstated. The authors analyzed the content of twenty asynchronous discussion forums within an online course in family communication. Their findings indicate that such groups send social messages at a fairly high rate; that participation seems to be fairly evenly distributed among members, although having a “leader” is helpful to the group’s process; and that instructor messages and competitive student messages have no apparent effect on the final product. However, they also found that two types of messages— orienting/giving information and showing solidarity—were found more frequently in groups that produced higher quality work. This research opens many questions and offers some guidelines about the most effective ways to structure online learning situations
A statistical comparison of solar wind sources of moderate and intense geomagnetic storms at solar minimum and maximum
Full text linkPeer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/95223/1/jgra17913.pd
Mapping of schistosomiasis and soil-transmitted helminths in Namibia: The first large-scale protocol to formally include rapid diagnostic tests
Get PDFBackground: Namibia is now ready to begin mass drug administration of praziquantel and albendazole against schistosomiasis and soil-transmitted helminths, respectively. Although historical data identifies areas of transmission of these neglected tropical diseases (NTDs), there is a need to update epidemiological data. For this reason, Namibia adopted a new protocol for mapping of schistosomiasis and geohelminths, formally integrating rapid diagnostic tests (RDTs) for infections and morbidity. In this article, we explain the protocol in detail, and introduce the concept of 'mapping resolution', as well as present results and treatment recommendations for northern Namibia.Methods/Findings/Interpretation: This new protocol allowed a large sample to be surveyed (N = 17 896 children from 299 schools) at relatively low cost (7 USD per person mapped) and very quickly (28 working days). All children were analysed by RDTs, but only a sub-sample was also diagnosed by light microscopy. Overall prevalence of schistosomiasis in the surveyed areas was 9.0%, highly associated with poorer access to potable water (OR = 1.5, P<0.001) and defective (OR = 1.2, P<0.001) or absent sanitation infrastructure (OR = 2.0, P<0.001). Overall prevalence of geohelminths, more particularly hookworm infection, was 12.2%, highly associated with presence of faecal occult blood (OR = 1.9, P<0.001). Prevalence maps were produced and hot spots identified to better guide the national programme in drug administration, as well as targeted improvements in water, sanitation and hygiene. The RDTs employed (circulating cathodic antigen and microhaematuria for Schistosoma mansoni and S. haematobium, respectively) performed well, with sensitivities above 80% and specificities above 95%.Conclusion/Significance: This protocol is cost-effective and sensitive to budget limitations and the potential economic and logistical strains placed on the national Ministries of Health. Here we present a high resolution map of disease prevalence levels, and treatment regimens are recommended.Peer reviewedEntomology and Plant Patholog
Creating Effective Online Discussions: Instructor and Student Roles
No full textTeaching online courses is unexplored territory for many instructors. Understanding how to use the powerful learning techniques involved in cooperative group learning in an online context is imperative. This paper is a first attempt to explore the dynamics of learning groups in the context of online discussion forums. Given the spread of online learning, the importance of this kind of research cannot be overstated. The authors analyzed the content of twenty asynchronous discussion forums within an online course in family communication. Their findings indicate that such groups send social messages at a fairly high rate; that participation seems to be fairly evenly distributed among members, although having a “leader” is helpful to the group’s process; and that instructor messages and competitive student messages have no apparent effect on the final product. However, they also found that two types of messages— orienting/giving information and showing solidarity—were found more frequently in groups that produced higher quality work. This research opens many questions and offers some guidelines about the most effective ways to structure online learning situations
