1,720,996 research outputs found
An Empirical Framework for Understanding Human-Technology Interaction Optimisation for Route Planning
No full textA number of interactive systems have been developed in the past to simulate or improve optimised
route planning as part of problem solving (e.g. Vehicle Routing Problems (VRPs)) focussing mainly
in the utilisation of computational algorithms. Main reasons for developing such interactive systems
is that they combine the strengths both computerised systems and humans have, to aid the
generation of optimal solutions and promote green logistics. Under a joint-cognitive perspective, the
system and the human operator (user) become parts of a single ecosystem, co-operating to complete
a task and in which cognitive technologies aid them to reach a decision. This paper reports the
performance-based design of such an interactive tool that supports optimisation in route planning.
It aims to identify human performance, behaviour and opportunities for designing innovative usercentred
interactive optimisation tools for route planning. Twenty-six users evaluated the interactive
route planner. Results suggest that switching strategies while planning routes lead to increase in
route optimality while providing different levels of control for the user. Results lead to the extension
of a joint-cognitive approach framework for optimisation routing problems that takes into account
both performance metrics and contextual factors such as changes within the task environment.
Related implications to optimisation systems’ design and evaluation are also discussed with a
particular focus on how new ubiquitous navigation technologies can be improved to promote cooperation
and more optimal route planning
An Empirical Framework for Understanding Human-Technology Interaction Optimisation for Route Planning
No full textA number of interactive systems have been developed in the past to simulate or improve optimised
route planning as part of problem solving (e.g. Vehicle Routing Problems (VRPs)) focussing mainly
in the utilisation of computational algorithms. Main reasons for developing such interactive systems
is that they combine the strengths both computerised systems and humans have, to aid the
generation of optimal solutions and promote green logistics. Under a joint-cognitive perspective, the
system and the human operator (user) become parts of a single ecosystem, co-operating to complete
a task and in which cognitive technologies aid them to reach a decision. This paper reports the
performance-based design of such an interactive tool that supports optimisation in route planning.
It aims to identify human performance, behaviour and opportunities for designing innovative usercentred
interactive optimisation tools for route planning. Twenty-six users evaluated the interactive
route planner. Results suggest that switching strategies while planning routes lead to increase in
route optimality while providing different levels of control for the user. Results lead to the extension
of a joint-cognitive approach framework for optimisation routing problems that takes into account
both performance metrics and contextual factors such as changes within the task environment.
Related implications to optimisation systems’ design and evaluation are also discussed with a
particular focus on how new ubiquitous navigation technologies can be improved to promote cooperation
and more optimal route planning
Task-based and Problem-based heuristics: Could they be mobilized as a Verification Mechanism for Usability Heuristics?
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Task-based and Problem-based heuristics: Could they be mobilized as a Verification Mechanism for Usability Heuristics?
No full textPrior research in design indicates that design considerations (as reflected through designers’ decisions) can greatly differ from users’ viewpoints when interacting with technologies. This is typically evidenced within designers’ proposals to focus on utility and appearance whilst users’ viewpoints (or reactions) to technologies can take multiple forms (e.g. visceral, behavioral and reflective). Heuristics are simple 'rules of thumb' applied in designing technologies, focusing on design principles that aim to satisfy utility and appearance while providing a means of ‘standardization’ for designers; the same applies to usability heuristics, which are employed at the end of the design process, to assess the usability of designed systems, both in terms of usability and aesthetics. Whilst design and evaluation heuristics can offer a level of ‘standardization’, users’ viewpoints, reactions and interpretation of the designed technology can be diverse (i.e. their emotional and behavioral responses can greatly differ, making it difficult to ‘standardize’). There are several reasons why this is happening, e.g. from individual differences to context and domain-based reasons; the latter is, indeed, one of the common issues in heuristics-based design and usability heuristics i.e. these are domain-specific. It appears that there is limited research in attempting to understand the relationship and mapping between users’ own behavior (i.e. behavior-based heuristics) and design heuristics. An open question is to what extent the ‘expertise’ and empirical knowledge of designers can overlook any intuitive or unconscious behavior-oriented heuristics that manifest 'discreetly' and 'automatically' when designing technologies.The present paper is drawing data from two different user studies (route optimization problem solving and data analytics), aiming to explore what types of behavior-based heuristics people employ when performing data analytic tasks and problem-solving tasks (without the use of computer interfaces). These two different domains are chosen as they contain different requirements (i.e. completion of healthcare data analytic tasks versus completion of visuospatial mathematical optimization problems), thus providing a diverse enough comparison to explore user behaviors within domains that require some form of computer interface. By identifying behavioral patterns and heuristics people employ when engaging with these two different domains, we are able to identify interactional needs that can inform the design of novel user interfaces (i.e. decision-support systems) that can assist in the completion of complex tasks, instead of designing technologies first and then applying design heuristics to adjust and evaluate the designs. Observation methods, problem-based/scenario-based approaches and Think Aloud protocols have been employed to identify heuristics in both studies while overall performance (in terms of task completion and accuracy) has also been measured. The research found that behavior-based heuristics can be task-based and problem-based and can manifest early in design thus need capturing at user requirements elicitation. Such behavior-based heuristics can be interactional, systemic, cognitive and experiential and need to be considered alongside usability heuristics. There is a need to formalize experiences against tasks, especially as ‘smart’ technologies and multi-systemic data exchange can be stakeholders and ‘end-users’. A conceptual design verification framework is proposed to enhance design and evaluation processes.</p
When immediate interactive feedback boosts optimization problem solving: a ‘human-in-the-loop’ approach for solving capacitated vehicle routing problems
Get PDFIn past, feedback in problem solving was found to improve human performance and focused mainly on learning applications. Interactive tools supporting decision-making and general problem-solving processes have long being developed to assist operations but not in optimization problem solving. Optimization problem solving is currently addressed within Operational Research (OR) through computational algorithms that aim to find the best solution in a problem (e.g. routing problem). Limited investigation there is on how computerized interactivity and metacognitive support (e.g. feedback and planning) can support optimization problem solving. This paper reports on human performance on Capacitated Vehicle Routing Problems (CVRPs) using paper-based problems and two different versions of an interactive computerized tool (one version with live explanatory and directive feedback alongside planning (strategy) support; one version without strategy support but with live explanatory feedback). Results suggest that human performance did not change when people were given paper-based post-problem feedback. On the contrary, participants' performance improved significantly when they used either version of the interactive tool that facilitated both live feedback support. No differences in performance across the two versions were observed. Implications on current theories and design implications for future optimization systems are discussed
Can you hear the Colour? Towards a Synaesthetic and Multimodal Design Approach in Virtual Worlds
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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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