A Cognitive Perspective on How Experts Develop Conceptual Models in Complex Domains

Conceptual models are important in understanding the domain which is to be reflected in the information systems. Development of such models involves experts in conceptual modeling techniques (ISDK experts) and experts in the domain application (ISAK experts). This paper focuses on understanding how these two types of experts interact and develop conceptual models jointly. Using an exploratory study, it was identified that in the early phase of development of conceptual models, the experts focus on understanding concepts of the domains that they are not familiar with. Later, when the experts had shared information on the concepts of the domains then they focus on developing the conceptual model. The study also indicates that the groups of experts that have high shared information are most likely to create high quality conceptual models

Collaboration: Skill Development Framework

This skill development framework has been developed to address the challenges associated with teaching and assessing collaboration. While there are many definitions of the skill, few provide a means to operationalise collaboration in the classroom. This framework is designed to synthesise and harmonise existing theory and research on collaboration to provide a holistic perspective. It outlines collaboration processes along prescribed strands and aspects that are informed by a sound evidentiary basis. The aspects contained within the framework are designed to provide foci for teaching and the basis of assessment

A comparative study of the effect of collaborative problem solving in a massively multiplayer online game (MMOG) on individual achievement

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Collaborative problem solving and program development model

A model to enhance collaborative problem solving and program development is presented. The collaborative model is a detailed cognitive model that takes into consideration the cognitive and social activities that occur during collaborative problem solving and program development. The cognitive activities required for collaborative problem solving and program development are identified and integrated into a six-stage model. An extensive literature review in the associated fields is presented to show the need for the model described in this dissertation. In addition, a comprehensive study of tools to support collaboration during problem solving and program development was also performed as well as a critique of these tools. A detailed statistical experiment to study the effect of this model on subjects, collaboratively solving a software problem was designed and executed. The experiment included testing the collaborative problem solving and program development model with and without assistance from groupware tools. The subject teams each constructed a software design and this design was evaluated based on, research hypotheses. This experiment produced results indicating the positive effect the Collaborative Model has on problem understanding and the quality of solution planning during collaborative problem solving and program development efforts

Situated navigation support for heterogeneous large crowds via augmented signage

PhD ThesisNavigating unfamiliar places is a common problem people face, and there is a wealth of commercial and research-based applications particularly for mobile devices that provide support in these settings. While many of these solutions work well on an individual level, they are less well suited for very crowded situations, e.g. sports matches, festivals and fairs, or religious events such as pilgrimages. In a large crowd, attending to a mobile device can be hazardous, the underlying technology might not scale well, and some people might be excluded due to not having access to a mobile device. Public signage does not suffer from these issues, and consequently, people frequently rely on signage in crowded settings. However, a key disadvantage of public signage is that it does not provide personalised navigation support. We have therefore investigated augmented signage as a navigation support system for use in large crowds. This thesis investigates the issues of guidance by augmented displays and how this can be made more suitable for people who navigate in groups in unfamiliar areas. In this context we have undertaken three studies as examples to explore how augmented displays can provide aid to people in crowded places. In the first study, we investigated the question of whether the use of dynamic public signage can help pilgrims count or remember the Tawaf rounds while walking around the Ka’bah. We analysed the current situation in Mecca based on a literature review and a series of interviews with pilgrims, who had completed at least one pilgrimage (already visited Mecca). We then presented a prototypical dynamic signage and reported on a user study we conducted in a realistic setting in order to evaluate the system. The results suggest that dynamic signage may be a feasible option to improve the safety of pilgrims in Mecca. In the second study, we introduced a scalable signage-based approach and present results from a comparison study contrasting two designs for augmented signage with a base approach. The results provide evidence that such a system could be easily useable, may reduce task load, and could improve navigation performance. In the final study, we developed public displays (static and dynamic signage) and investigated the ability of using such displays to assist pilgrims of Mecca to find each other after becoming separated while performing rituals inside the Haram (e.g. Tawaf pillar). Once again here we have addressed the issue through a series of interviews with people who had experienced pilgrimage before. Then we constructed a full idea that allowed us to design the initial system and presented it in a focus group session to gain feedback and redesign the system. Afterwards, we conducted a lab-based user study. The results we obtained suggest that a person can extract information (by reading the dynamic signage), also results showed that users were able to remember their information (whilst completing some distraction tasks), and then they completed the static signs tasks successfully. Generally results showed that the system can indicate people to the right place where they can meet again after becoming separated. In general, these results provided good evidence that augmented signage supported by colour and visual codes might provide considerable help in situations with large and heterogeneous crowds. It might be developed and used in different settings for provisional navigation information and allow multi-users to extract their personalised information individually

Distributed cognition and computer supported collaborative design: The organisation of work in construction engineering

This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The intellectual contribution of this thesis lies within the area of computer supported co-operative work (CSCW), and more specifically, computer supported co-operative design (CSCD). CSCW is concerned with the development of information systems and technological support for multi-participant work activities. Research into CSCW seeks to understand how people and organisations interact with one another, and to integrate this understanding with the development of computer based tools to support real world settings. Much of the technology developed to support the work of designers has been developed to aid individuals working alone, with tools like computer aided drafting (CAD), scheduling, and database software. The growth of interest in ‘groupware’ has led many technology developers to adapt these design tools for use in group situations. However, joint activities are different from those performed alone, and organisational structures can both interfere with, and supplement co-operative work practices in a way that the current technologies cannot provide support for. To develop effective group design tools, we need to understand more about collaborative processes in design. This thesis draws from the theoretical underpinning of cognitive science and the methods of anthropology and sociology, in an interdisciplinary study of design performance in the construction industry. Fieldwork is used as a method of qualitative data collection and this is examined within the analytic framework of distributed cognition. The results of this analysis provide a useful and usable description of the work of design that technology developers can use to support collaborative design work. In line with the methods of distributed cognition, the activities observed in the workplace studies are examined in terms of their processes and representations. The resources that were available to the design participants are made explicit, as are their situation-specific work patterns. Two case studies of design are examined. The first of these describes design work in a civil engineering project, which involves a number of different design activities. The second describes the work of consulting engineers in building design, focusing on a more limited design role, which is used to back up and supplement areas of the first study that were understood to be particularly relevant. The findings of the study demonstrate how design processes operate simultaneously at personal, organisational and inter-organisational levels. The distinction between the formal, organisational procedures, and the informal, social processes that compliment them is examined to show how these are interrelated in the performance of the design task and their importance to the mechanisms used to co-ordinate actions. The findings of the study have implications for the development of novel technologies to augment the engineering design process, and have already been used in the development of assistive design technologies. The thesis demonstrates that the framework of distributed cognition can be used in the analysis of cognition within a setting, involving multiple individuals, in concert with 'natural' and 'artificial' artefacts. The thesis makes clear a number of processes in design that can only be examined from a perspective which includes the social dimensions of work. The methods of study focus on the resources in collaborative activities, whilst the analysis, structured in terms of the representations and processes of collaborative activity, shows that the method can be used effectively in the development of CSCW and CSCD technologies

A MEETING OF MINDS ACROSS THE WORKSPACE: COMMON GROUND IN COLLABORATIVE DESIGN

This thesis reports an exploration of how the use and construction of external representations through methods of signalling and conversational grounding, support the sharing of ideas for spatial design tasks and how that support changes as a function of access to a shared works pace, external representations and memory support. Further aims of the study were to develop a coding scheme to identify the use of language in establishing and maintaining mutual understanding between collaborators. Pilot studies identified appropriate tasks relating to visual problem-solving design tasks for use in the main studies. For the main studies, video recordings were obtained, coded and time-stamped and analysis of the duration of grounding and activity codes, as well as concurrent grounding and activity, was carried on the impact of tasks and constraints on communication. For the first study 36 pairs of participants were used to investigate collaborative problem-solving and visual access to a shared workspace was varied. For the second study, 30 pairs of participants were used to investigate how ‘learned’ solutions are communicated. Again visual access to a shared workspace was varied, together with the manipulation of the opportunity for communicators to have access to external representations and memory support. Evidence was obtained to support the principles of ‘co-operation' and 'least collaborative effort' in conversation. Differences in the use and construction of external representations were discussed in terms of compensations, and changes in dyadic interactivity, made as a function of limitations in the media settings and the purpose of the joint activity. Other issues emerged relating to perceived communication efficacy as a result of a divided workspace focus and competition between problem-solving and grounding resources. These findings have implications for design cognition and communication as well as the technological support offered to support such activities

DEVELOPING A METHOD FOR IDENTIFYING AND REDUCING FUNCTIONAL DISCREPANCIES OF INFORMATION SYSTEMS

Currently more than half of Electronic Health Record (EHR) projects fail. Most of these failures are not due to flawed technology, but rather due to the lack of systematic considerations of human issues. Among the barriers for EHR adoption, function mismatching among users, activities, and systems is a major area that has not been systematically addressed from a human-centered perspective. A theoretical framework called Functional Framework was developed for identifying and reducing functional discrepancies among users, activities, and systems. The Functional Framework is composed of three models – the User Model, the Designer Model, and the Activity Model. The User Model was developed by conducting a survey (N = 32) that identified the functions needed and desired from the user’s perspective. The Designer Model was developed by conducting a systemic review of an Electronic Dental Record (EDR) and its functions. The Activity Model was developed using an ethnographic method called shadowing where EDR users (5 dentists, 5 dental assistants, 5 administrative personnel) were followed quietly and observed for their activities. These three models were combined to form a unified model. From the unified model the work domain ontology was developed by asking users to rate the functions (a total of 190 functions) in the unified model along the dimensions of frequency and criticality in a survey. The functional discrepancies, as indicated by the regions of the Venn diagrams formed by the three models, were consistent with the survey results, especially with user satisfaction. The survey for the Functional Framework indicated the preference of one system over the other (R=0.895). The results of this project showed that the Functional Framework provides a systematic method for identifying, evaluating, and reducing functional discrepancies among users, systems, and activities. Limitations and generalizability of the Functional Framework were discussed