Richard Medina

Richard Medina
University of Hawaiʻi at Mānoa | UH Manoa · Center for Language and Technology

Computer Science, Ph.D.

About

33
Publications
5,299
Reads
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1,115
Citations
Introduction
Additional affiliations
August 2008 - August 2015
University of Hawaii System
Position
  • IT Specialist
August 2008 - present
University of Hawaii System
August 2004 - present
University of Hawaiʻi at Mānoa
Education
August 2004 - August 2013
University of Hawaiʻi at Mānoa
Field of study
  • Computer Science
August 1999 - August 2002
New Mexico Highlands University
Field of study
  • Media Arts and Computer Science
January 1992 - May 1996
New Mexico Highlands University
Field of study
  • Spanish/Music

Publications

Publications (33)
Article
We analyze the interaction of 3 students working on mathematics problems over several days in a virtual math team. Our analysis traces out how successful collaboration in a later session is contingent upon the work of prior sessions and shows how the development of representational practices is an important aspect of these participants' problem sol...
Article
The analysis discussed in this paper draws attention to the interactional and inscriptional practices observed in a science laboratory setting that utilizes Group Scribbles. The critical finding is the identification of a pivotal sequence of interaction occurring in the later half of the activity in which one member of the group proposes an innovat...
Chapter
Full-text available
In order to understand how entanglements of the activities of multiple individuals in technology-mediated environments result in learning, it is necessary to trace out activity that may be distributed across time, space and media. Multiple analytic challenges are encountered, including the distributed nature of the data, the contingent nature of hu...
Article
Full-text available
Productive multivocality in CSCL has been the focus of a series of workshops involving the comparison and contrasting of multiple analyses of the same datasets, with the goal of learning how different epistemologies and analysis methods of collaborative learning can complement each other and allow a more complete understanding to emerge. A prerequi...
Article
Full-text available
This article examines the links to YouTube from the Facebook “walls” of the three major candidates in the 2008 U.S. Presidential election. User-generated linkage patterns show how participants in these politically related social networking dialogs used online video to make their points. We show how different types of individuals inhabit these overl...
Article
Full-text available
Both candidates and voters have increased their use of the Internet for political campaigns. Candidates have adopted many internet tools, including social networking websites, for the purposes of communicating with constituents and voters, collecting donations, fostering community, and organizing events. On the other side, voters have adopted Inter...
Article
Full-text available
The relationship between interaction and learning is a central concern of the learning sciences, and analysis of interaction has emerged as a major theme within the current literature on computer-supported collaborative learning. The nature of technology-mediated interaction poses analytic challenges. Interaction may be distributed across actors, s...
Conference Paper
Full-text available
Technological resources for collaborative learning are productively conceived of as resources appropriated by learners as they develop their competencies. Therefore, to understand the implications of technological designs for collaborative learning, it is necessary to examine learners' practices over time. Microanalytic approaches are most suitable...
Article
Full-text available
People implicitly negotiate use of representations during learning, even in distributed online settings, but due to the temporally and spatially distributed nature of interaction, special analytic tools are required to uncover the development of representational practices in such settings. In this paper, we show how logs of online activity can be a...
Chapter
Full-text available
This chapter analyzes the interaction of three students working on mathematics problems over several days in a virtual math team. Our analysis traces out how successful collaboration in a later session was contingent upon the work of prior sessions, and shows how representational practices are important aspects of these participants’ mathematical p...
Conference Paper
Full-text available
Prior analyses of collaboration through different notational systems (e.g., threaded discussions and evidence maps) have documented differential influences of notations on collaborative processes as well as ways in which groups appropriate these notations for their work. These prior analyses have focused on collaborative interaction, yet for instru...
Conference Paper
This research summary discusses the need to explore research methods and techniques for understanding intersubjective development of representational practices. Key issues include generalization of qualitative findings that leverage productive tensions between descriptive and scalar accounts of computer supported collaborative learning and interact...
Conference Paper
Full-text available
This paper analyzes the interaction of three students working on mathematics problems over several days in a virtual math team. Our analysis traces out how successful collaboration in a later session was contingent upon the work of prior sessions, and shows how representational practices are important aspects of these participants' mathematical pro...
Conference Paper
Full-text available
This paper examines the linkage patterns of people who posted links on the Facebook "walls" of Barack Obama, Hillary Clinton, and John McCain over two years prior to the 2008 U.S. Presidential election. Linkage patterns indicate the destinations to which participants in these social networking dialogues wished to send other participants. We show a...
Article
Although most online learning environments are predominately text based, researchers have argued that representational support for the conceptual structure of a problem would address problems of coherence and convergence that have been shown to be associated with threaded discussions and more effectively support collaborative knowledge construction...
Conference Paper
Full-text available
People implicitly negotiate use of representations during learning, even in distributed online settings, but due to the temporally and spatially distributed nature of interaction, special analytic tools are required to uncover the development of representational practices in such settings. In this paper we show how logs of online activity can be an...
Article
Full-text available
In this paper, we propose a three component CSCL design evaluation framework of usability, sociability, and learnability. Usability refers to the ease of use and subjective learner satisfaction with CSCL systems. Sociability refers to the CSCL system support for social interactional processes such as conversation, cooperation, deliberation, and/or...
Conference Paper
Full-text available
This work is based on the premise that the interactional construction of meaning is as important in online settings as it is face-to-face, especially in collaborative learning. Yet most studies of online learning use quantitative methods that assign meaning to contributions in isolation and aggregate over many sessions, obscuring the situated proce...
Conference Paper
Full-text available
An experimental study of asynchronously communicating dyads tested the claim that conceptual representations could more effectively support collaborative knowledge construction in online learning than threaded discussions. Results showed that users of conceptual representations created more hypotheses earlier in the experimental sessions and elabor...
Conference Paper
Full-text available
Various authors have placed information sharing at the core of successful collaborative problem solving and learning. In this paper we report analyses of an experimental study that bring the sufficiency of an information sharing account of collaboration into question. One treatment group achieved greater convergence and integration of information i...
Conference Paper
Full-text available
The interactional structure of learning practices is a central focus of study for CSCL, although challenges remain in developing and pursuing a systematic research agenda in the field. Different analytic approaches produce complementary insights, but comparison is hampered by incompatible representations of the object of study. Sequential interacti...
Conference Paper
Full-text available
In multiple research literatures, successful collaborative problem solving and learning is analyzed in terms of success of information sharing. In this paper we report analyses of an experimental study that bring the sufficiency of an information sharing account of collaboration into question. One treatment group achieved greater convergence and in...
Conference Paper
Full-text available
Researchers have argued that tools for online learning should provide representational support for the conceptual structure of a problem area in order to address issues of coherence and convergence and more effectively support collaborative knowledge construction. The study described in this paper sets out to investigate the merits of knowledge rep...
Conference Paper
Full-text available
This paper reports on our efforts to deepen the analysis of online collaborative learning. Most studies of online learning use quantitative methods that assign meaning to contributions in isolation and aggregate over many sessions, obscuring the actual procedures by which participants accomplish learning through the affordances of online media. Met...
Conference Paper
This paper describes extensions to a musical score indexing program that enable it to discover sequences of notes that appear in retrograde and/or inverted form. The program was tested over a set of 50 orchestral movements by several composers of the Baroque, Classical, and Romantic periods. The retrograde and inversion discovery algorithm added an...
Conference Paper
Full-text available
We describe a method of automatically creating a content-based index of musical scores. The goal is to capture the themes, or motifs, that appear in the music. The method was tested by building an index of 25 orchestral movements from the classical music literature. For every movement, the system captured the primary theme, or a variation of the pr...
Article
Full-text available
This paper describes a method for automatically discovering themes in music. A program based on this algorithm can generate a theme index from a music database
Article
Full-text available
This work is based on the premise that the interactional construction of meaning is as important in online settings as it is face-to-face, especially in collaborative learning. Most studies of online learning use quantitative methods that assign meaning to contributions in isolation and aggregate over many sessions, obscuring the situated procedure...
Article
Typescript. Thesis (M.S.)--New Mexico Highlands University, 2002. Includes bibliographical references (leaves [55-57]).

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