title: Mediational engagement in E-learning: An Activity Theory analysis

authors: Pahala Gedera, Dilani Sampath

subjects: Learner engagement

abstract: The emergence of educational technologies offers flexible learning opportunities to students. However, the nature of the online learning environment can lead to disengagement and subsequent minimal participation, which present challenges and concerns in relation to students’ learning. Therefore, in order for learners to have positive learning experiences, it is vital to identify factors that affect students’ engagement in online learning environments.

Although the use of learning management systems (LMS) as an asynchronous e-learning platform can influence learner engagement, there is little research on these influences and the ways in which an LMS affects engagement. In addition, studies on students’ perceptions of learning and engagement with synchronous and asynchronous technologies are under-explored. In response to these concerns, this research sets out to gain a better understanding of students’ engagement in e-learning activities. In particular, the study examines mediating factors that affect students’ engagement in e-learning activities in a range of e-learning contexts at the University of Waikato. The study also aims to explore the affordances and constraints of some e-learning tools and their influence on students’ engagement in this context.

The research was carried out in the form of three case studies and students and lecturers of the three courses in three different university departments participated in this study. Qualitative data collection methods used in the research were interviews, observations and document analysis. The data were collected throughout the duration of the courses.

In exploring the factors that affect students’ engagement in e-learning activities and how the various elements operate together, Engstrom’s (1987) Activity Theory was used as the research framework. Activity theory helps describe learning activities, mediating tools, relationships between elements of activity systems and goals and objectives of activities. The constituents of an activity system include subject, object, tools, rules, community and division of labour. An activity system framework allowed this research to examine the relationships between these elements and also the way elements affect each other.

Findings indicated that students’ active participation in the three cases was mediated by the educational technologies, the learning materials, the design of the course and the English language.  The analysis also showed that the lecturers’ technological pedagogical knowledge (TPK) was reflected through the design of the courses and consequently influenced students’ learning. The development of an online learning community also benefitted students’ learning. Some deliberate strategies like creating spaces for communication both in general and in specific modules provided students with opportunities to work collaboratively, share ideas and useful information, and learn from each other. These interactions also facilitated close connections among students. The guidelines that specified information about the format of written or oral presentations, duration or length, level of formality, assessment criteria/marking guidelines and referencing guidelines also acted as a mediator and influenced the way students participated in activities in all three case studies. The analysis also indicated the importance of participants’ responsibilities in their courses. In particular, as a result of lecturers not defining both their roles and those of their students, some misunderstandings, confusions and frustrations occurred. These mediated students’ engagement.

Insights gained from this study related to affordances and constrains of some e-learning tools and their influence on students’ engagement may be of benefit to tertiary educators. The pedagogical strategies that are suggested at the end of this thesis can also be of use to teachers and instructional designers when designing online courses. Overall, the findings confirm the importance of providing appropriate conditions for learner engagement in online learning contexts, and significance of lecturers’ technological pedagogical knowledge on learner engagement and positive learning experiences.

text: Mediational engagement in E-learning: An Activity Theory analysis The emergence of educational technologies offers flexible learning opportunities to students. However, the nature of the online learning environment can lead to disengagement and subsequent minimal participation, which present challenges and concerns in relation to students’ learning. Therefore, in order for learners to have positive learning experiences, it is vital to identify factors that affect students’ engagement in online learning environments.

Although the use of learning management systems (LMS) as an asynchronous e-learning platform can influence learner engagement, there is little research on these influences and the ways in which an LMS affects engagement. In addition, studies on students’ perceptions of learning and engagement with synchronous and asynchronous technologies are under-explored. In response to these concerns, this research sets out to gain a better understanding of students’ engagement in e-learning activities. In particular, the study examines mediating factors that affect students’ engagement in e-learning activities in a range of e-learning contexts at the University of Waikato. The study also aims to explore the affordances and constraints of some e-learning tools and their influence on students’ engagement in this context.

The research was carried out in the form of three case studies and students and lecturers of the three courses in three different university departments participated in this study. Qualitative data collection methods used in the research were interviews, observations and document analysis. The data were collected throughout the duration of the courses.

In exploring the factors that affect students’ engagement in e-learning activities and how the various elements operate together, Engstrom’s (1987) Activity Theory was used as the research framework. Activity theory helps describe learning activities, mediating tools, relationships between elements of activity systems and goals and objectives of activities. The constituents of an activity system include subject, object, tools, rules, community and division of labour. An activity system framework allowed this research to examine the relationships between these elements and also the way elements affect each other.

Findings indicated that students’ active participation in the three cases was mediated by the educational technologies, the learning materials, the design of the course and the English language.  The analysis also showed that the lecturers’ technological pedagogical knowledge (TPK) was reflected through the design of the courses and consequently influenced students’ learning. The development of an online learning community also benefitted students’ learning. Some deliberate strategies like creating spaces for communication both in general and in specific modules provided students with opportunities to work collaboratively, share ideas and useful information, and learn from each other. These interactions also facilitated close connections among students. The guidelines that specified information about the format of written or oral presentations, duration or length, level of formality, assessment criteria/marking guidelines and referencing guidelines also acted as a mediator and influenced the way students participated in activities in all three case studies. The analysis also indicated the importance of participants’ responsibilities in their courses. In particular, as a result of lecturers not defining both their roles and those of their students, some misunderstandings, confusions and frustrations occurred. These mediated students’ engagement.

Insights gained from this study related to affordances and constrains of some e-learning tools and their influence on students’ engagement may be of benefit to tertiary educators. The pedagogical strategies that are suggested at the end of this thesis can also be of use to teachers and instructional designers when designing online courses. Overall, the findings confirm the importance of providing appropriate conditions for learner engagement in online learning contexts, and significance of lecturers’ technological pedagogical knowledge on learner engagement and positive learning experiences.

year: 2014

title: Improving the performance of HTTP over high bandwidth-delay product circuits

authors: McGregor, Anthony James

subjects: TCP/IP performance

abstract: As the WWW continues to grow, providing adequate bandwidth to countries remote from the geographic and topological center of the network, such as those in the Asia/Pacific, becomes more and more difficult. To meet the growing traffic needs of the Internet some Network Service Providers are deploying satellite connections. Through discrete event simulation of a real HTTP workload with differing international architectures this paper is able to give guidance on the architecture that should be deployed for long distance, high capacity Internet links.
We show that a significant increase in the time taken to fetch HTTP requests can be expected when traffic is moved from a long distance international terrestrial link to a satellite link. We then show several modifications to the network architecture that can be used to greatly improve the performance of a satellite link. These modifications include the use of an asymmetric satellite link, the multiplexing of multiple HTTP requests onto a single TCP connection and the use of HTTP1.1.

text: Improving the performance of HTTP over high bandwidth-delay product circuits As the WWW continues to grow, providing adequate bandwidth to countries remote from the geographic and topological center of the network, such as those in the Asia/Pacific, becomes more and more difficult. To meet the growing traffic needs of the Internet some Network Service Providers are deploying satellite connections. Through discrete event simulation of a real HTTP workload with differing international architectures this paper is able to give guidance on the architecture that should be deployed for long distance, high capacity Internet links.
We show that a significant increase in the time taken to fetch HTTP requests can be expected when traffic is moved from a long distance international terrestrial link to a satellite link. We then show several modifications to the network architecture that can be used to greatly improve the performance of a satellite link. These modifications include the use of an asymmetric satellite link, the multiplexing of multiple HTTP requests onto a single TCP connection and the use of HTTP1.1.

year: 2001

title: The cultural and ecological health of the Tokaanu Stream

authors: Eastwood, Kevin

abstract: Freshwater ecosystems worldwide face increasing threats from human activities like land development and altered flow regimes. These pressures, along with climate change, jeopardize water quality and quantity. Despite these challenges, effective management can improve water quality and habitat, thus sustaining biodiversity and ecosystem services.
Lake Taupō, Aotearoa New Zealand’s largest freshwater lake, holds immense significance for the local iwi, Ngāti Tūwharetoa. The Tokaanu Stream is a tributary of Lake Taupō that was once considered a premier fly-fishing spot. However, the stream has been severely impacted by the Tongariro Power Scheme, which required it to be bisected and channelized to accommodate the Tokaanu tailrace. Coupled with land-use changes in the catchment, these alterations have caused the local hapū, Ngāti Kurauia, who have mana whenua over the lower stream, to raise concerns about its ecological and cultural degradation. To address this problem, I developed a cultural monitoring framework (CMF) in collaboration with Ngāti Kurauia, alongside conventional stream monitoring, at six sites in the lower Tokaanu Stream.
The bespoke CMF was developed through kōrero and wānanga (discussions and workshops) with Ngāti Kurauia. This participatory approach resulted in a CMF with 16 attributes covering vegetation, birdlife, water quality, pollution, engineering, and substrate. Regular assessments revealed a longitudinal decline in stream condition from the most upstream site (Site 1) to the most downstream (Site 6). The state of Site 3 was identified as the most desirable, whilst Site 5 was the most degraded.
Alongside the CMF, I assessed stream health using conventional scientific measures. This monitoring also showed a longitudinal decline in stream ecosystem health moving downstream. Water quality worsened, with indicator bacteria increasing from 45 to 190 CFU/100 ml and total ammoniacal nitrogen from 0.029 to 0.125 g/m3 over the 4 km segment. Deposited fine sediment cover was high, increasing from 69% cover at Site 1 to 83% at Site 6. Cellulose degradation rates (a functional indicator) were diminished at Sites 5 and 6 in both years, even with warming from geothermal springs. Macroinvertebrate communities, monitored in 2023 and 2024, initially showed a linear decline moving downstream in 2023. However, in-stream remediation in early 2024, undertaken by a private contractor, significantly improved macroinvertebrate indicators at impacted sites (Sites 4-6).
The challenges facing the Tokaanu Stream are complex, stemming from geothermal inputs, urbanisation, upstream agriculture, and channelization. Declining water quality may be linked to faulty sewage infrastructure in Tokaanu Village. The stream's diversion includes a tailrace spillway that prevents larger downstream flows, potentially reducing scouring events crucial for natural sediment dynamics. These changes have significant ecological and cultural ramifications for Ngāti Kurauia.
To better understand and address these issues, I argue for an additional downstream State of the Environment (SOE) monitoring site. The current site, near the upstream spring, fails to capture the full impact of catchment inputs, including diffuse pollution from Tokaanu Village and altered sediment dynamics from the diversion. An additional SOE site, coupled with the findings of my thesis, would provide crucial knowledge to support efforts in restoring the Tokaanu Stream's ecological health and the mana of Ngāti Kurauia.

text: The cultural and ecological health of the Tokaanu Stream Freshwater ecosystems worldwide face increasing threats from human activities like land development and altered flow regimes. These pressures, along with climate change, jeopardize water quality and quantity. Despite these challenges, effective management can improve water quality and habitat, thus sustaining biodiversity and ecosystem services.
Lake Taupō, Aotearoa New Zealand’s largest freshwater lake, holds immense significance for the local iwi, Ngāti Tūwharetoa. The Tokaanu Stream is a tributary of Lake Taupō that was once considered a premier fly-fishing spot. However, the stream has been severely impacted by the Tongariro Power Scheme, which required it to be bisected and channelized to accommodate the Tokaanu tailrace. Coupled with land-use changes in the catchment, these alterations have caused the local hapū, Ngāti Kurauia, who have mana whenua over the lower stream, to raise concerns about its ecological and cultural degradation. To address this problem, I developed a cultural monitoring framework (CMF) in collaboration with Ngāti Kurauia, alongside conventional stream monitoring, at six sites in the lower Tokaanu Stream.
The bespoke CMF was developed through kōrero and wānanga (discussions and workshops) with Ngāti Kurauia. This participatory approach resulted in a CMF with 16 attributes covering vegetation, birdlife, water quality, pollution, engineering, and substrate. Regular assessments revealed a longitudinal decline in stream condition from the most upstream site (Site 1) to the most downstream (Site 6). The state of Site 3 was identified as the most desirable, whilst Site 5 was the most degraded.
Alongside the CMF, I assessed stream health using conventional scientific measures. This monitoring also showed a longitudinal decline in stream ecosystem health moving downstream. Water quality worsened, with indicator bacteria increasing from 45 to 190 CFU/100 ml and total ammoniacal nitrogen from 0.029 to 0.125 g/m3 over the 4 km segment. Deposited fine sediment cover was high, increasing from 69% cover at Site 1 to 83% at Site 6. Cellulose degradation rates (a functional indicator) were diminished at Sites 5 and 6 in both years, even with warming from geothermal springs. Macroinvertebrate communities, monitored in 2023 and 2024, initially showed a linear decline moving downstream in 2023. However, in-stream remediation in early 2024, undertaken by a private contractor, significantly improved macroinvertebrate indicators at impacted sites (Sites 4-6).
The challenges facing the Tokaanu Stream are complex, stemming from geothermal inputs, urbanisation, upstream agriculture, and channelization. Declining water quality may be linked to faulty sewage infrastructure in Tokaanu Village. The stream's diversion includes a tailrace spillway that prevents larger downstream flows, potentially reducing scouring events crucial for natural sediment dynamics. These changes have significant ecological and cultural ramifications for Ngāti Kurauia.
To better understand and address these issues, I argue for an additional downstream State of the Environment (SOE) monitoring site. The current site, near the upstream spring, fails to capture the full impact of catchment inputs, including diffuse pollution from Tokaanu Village and altered sediment dynamics from the diversion. An additional SOE site, coupled with the findings of my thesis, would provide crucial knowledge to support efforts in restoring the Tokaanu Stream's ecological health and the mana of Ngāti Kurauia.

year: 2025