Supporting Public Availability and Accessibility with Elvin: Experiences and Reflections

Fitzpatrick, Geraldine; Kaplan, Simon M.; Mansfield, Tim; Arnold, David; Segall, Bill

doi:10.1023/a:1021226206564

Cited by 51 publications

(41 citation statements)

References 28 publications

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“…They principally vary in temporal nature (synchronous [7,8,9,10], asynchronous [11,12]), type of information they provide (workspace [13,14,15,16,9,11,17,18], availability [19,20,21,8,22], activity [19,20] etc. ), and the task they are tailored for (conferencing [8], distance learning [23] etc.).…”

Section: Relevant Researchmentioning

confidence: 99%

Distributed Awareness for Class Orchestration

Alavi

Dillenbourg

Kaplan

2009

Lecture Notes in Computer Science

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Abstract. The orchestration process consists of managing classroom interactions at multiple levels: individual activities, teamwork and class-wide sessions. We study the process of orchestration in recitation sections, i.e. when students work on their assignments individually or in small groups with the presence of teaching assistants who give help on demand. Our empirical study revealed that recitation sections suffer from inefficient orchestration. Too much attention is devoted to the management of the relationship between students and teaching assistants, which prevent both sides from concentrating on their main task. We present a model of students' activities during recitation sections that emphasize the issue of mutual awareness, i.e. monitoring help needs and TA's availability. To tackle these difficulties, we developed two awareness tools. Both tools convey the same information: which exercise each group is working on, whether it has asked for help and for how long. In the centralized version, named Shelf, students provide information with a personal response system and the status of each team is juxtaposed on a central display. In the distributed version, named Lantern, each team provides information by interacting with a lamp placed on its table. The display is distributed over the classroom, the information being spatially associated to each group. We are now comparing these two versions in an empirical study with two first year undergraduate classes in Physics. Preliminary results show that both versions increase the efficiency of interaction between students and teaching assistants. This contribution focused on the distributed version.

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Section: Relevant Researchmentioning

confidence: 99%

Distributed Awareness for Class Orchestration

Alavi

Dillenbourg

Kaplan

2009

Lecture Notes in Computer Science

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“…Communication protocols -For the connection CML-PML and the communication within the PML, we use a generic asynchronous notification service called Elvin [8]. This service was primary designed as a middleware for distributed systems, however, many research projects have used Elvin due to its simplicity.…”

Section: Context Management Layer (Cml) -mentioning

confidence: 99%

Autonomic system for mobility support in 4G networks

Vidales

Baliosian

Serrat

et al. 2005

IEEE J. Select. Areas Commun.

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Abstract-Individual wireless access networks show limitations that can be overcome through the integration of different technologies into a unified platform (i.e. 4G system). Nevertheless, the integration of heterogeneous networks poses many challenges such as adding complexity to the processes of deciding when to handoff, selecting the best network, and minimising roaming effects using appropriate handover methods. This paper presents PROTON, a novel solution that assists mobile users in the decision-making process related to roaming between heterogeneous technologies. PROTON deploys a formal policy representation model, based on Finite State Transducers, that evaluates policies using information from the context to manage mobiles' behaviour in a transparent manner, hiding 4G systems' complexities. We blend concepts of autonomic computing into the design of the solution and manage to improve user experience in typical 4G scenarios while keeping transparency.Index Terms-policy systems, 4G networks, Finite State Transducer, heterogeneous, handover.

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“…The papers collected in this special issue on 'Awareness in CSCW' all contribute to the investigation of these issues in a variety ways, by 'unpacking' and identifying the variegated practices that have been thrown together under the label 'awareness' (Chalmers, 2002;Heath et al, 2002;Mark, 2002;Robertson, 2002); by systematic conceptual analysis of the 'elements of knowledge' at play in 'workspace awareness' (Gutwin and Greenberg, 2002); by exploring new 'sensation and interaction possibilities' offered by for instance wearable computational devices (Gaver, 2002), by studying novel mechanisms to 'produce, gather and redistribute information from everyday activities' (Fitzpatrick et al, 2002); and by exploring a radically distributed computational model of awareness based on the 'reaction-diffusion metaphor' (Simone and Bandini, 2002).…”

mentioning

confidence: 99%