task modelling has been entering the development process of web applications. However, modelling web processes from a usage-centred perspective is still challenging due to the strong distinctions of traditional intera...
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ISBN:
(纸本)9783540772217
task modelling has been entering the development process of web applications. However, modelling web processes from a usage-centred perspective is still challenging due to the strong distinctions of traditional interactive systems and state-of-the-art web applications. this paper proposes the WebtaskModel approach, by which task model concepts are adapted for the purpose of modelling interactive web applications. the main difference to existing taskmodels is the introduction and build-time usage of a generic task lifecycle. Hereby the descriptions of exceptions and error cases of task performance (caused by, e.g., the stateless protocol or Browser interactions) are on the one hand appended to the task while, on the other hand, being clearly separated.
the development of userinterfaces is influenced by various challenges in recent years. these are foremost caused by increasing complexity of the underlying applications and the use of these applications on different ...
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ISBN:
(纸本)9783540772217
the development of userinterfaces is influenced by various challenges in recent years. these are foremost caused by increasing complexity of the underlying applications and the use of these applications on different devices, by different user types and in changing environments. Model-based userinterface development approaches have been shown to be suitable to face these challenges. However, creating, transforming and linking the various included models are complex tasks. Employing patterns can avoid these disadvantages and provide an advanced concept of reuse. In this paper a general framework is introduced that describes how model-based approaches can be extended with patterns. the implementation of the framework is exemplarily shown in order to derive a concrete pattern-driven model-based approach for userinterface development. A case study is used to illustrate the derived approach.
this paper describes a model-based development process for context-aware userinterfaces. the development process consists of the specification and updates of several models followed by the generation and evaluation o...
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ISBN:
(纸本)9783540708155
this paper describes a model-based development process for context-aware userinterfaces. the development process consists of the specification and updates of several models followed by the generation and evaluation of a prototype. A generic runtime architecture will be presented supporting distinct prototyping renderers at different abstraction levels in order to support prototyped development during the whole design cycle of the context-aware userinterface. To clarify the functioning of the architecture, a case study will be presented, demonstrating the possibilities of this prototype-driven development approach.
Model-based approaches are a suitable alternative to cope withthe increasing complexity of eServices made available in the last years by eGovernment applications. However, up to now, only a few studies have investiga...
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ISBN:
(纸本)9783540708155
Model-based approaches are a suitable alternative to cope withthe increasing complexity of eServices made available in the last years by eGovernment applications. However, up to now, only a few studies have investigated which are the requirements for notations and tools devoted to support eService modeling. the main goal of this paper is to make a state of knowledge on the specification of user activity and processes in eGovernment eServices. Our results advocated for a hybrid approach for modeling combining taskmodels and process models.
Model-based approaches describe the process of creating UI models and transforming them to build a concrete UI. Developers specify interactive systems on a more abstract and conceptual level instead of dealing with lo...
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ISBN:
(纸本)9783540708155
Model-based approaches describe the process of creating UI models and transforming them to build a concrete UI. Developers specify interactive systems on a more abstract and conceptual level instead of dealing with low level implementation. However, specifying the various models is a complex and time consuming task. Pattern-based approaches encapsulate frequently used solutions in form of building blocks that developers may combine to create a userinterface model. thus they enforce reuse and readability and reduce complexity. In this paper we present a comprehensive framework that unites model-based and pattern-driven approaches. We introduce the "Patterns In Modelling" (PIM) tool, that implements this framework. We will demonstrate the functioning of the tool by using an illustrative example. We primarily focus on the creation of the task model and give a brief outlook how patterns will be applied to the other levels within the framework.
Modelling creative tasks is a complex activity, yet comprehensive models are needed in order to better understand creativity, and the process of generating creative artefacts. Research on creativity, and how to design...
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ISBN:
(纸本)9783540772217
Modelling creative tasks is a complex activity, yet comprehensive models are needed in order to better understand creativity, and the process of generating creative artefacts. Research on creativity, and how to design useful, usable and engaging creativity support tools, has been one focus of HCI in the last decade. In the present paper we briefly overview selective models of creativity, and distinguish between them on a number of factors. We then outline problems in modelling creative processes in general, and in attempting to create relationships and correspondences between current creativity modelling approaches, in particular. Finally, we consider the role an analytical structure, and task-based models, might play in advancing the state of the art.
For many years, tailorability has been identified as a very important property of system design in order to take care of the emerging users needs towards their working environments. In the same time component-based ap...
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ISBN:
(纸本)9783540772217
For many years, tailorability has been identified as a very important property of system design in order to take care of the emerging users needs towards their working environments. In the same time component-based approaches have been revealed as an interesting solution for tailorability, allowing dynamic integration of components in global environments supporting specific tasks. However, component technologies still face some drawbacks mainly due to a semantic problem. In order to palliate these lacks we propose in this paper a new solution that tends to merge tasks models, from the HCI research field, and existing component models. It particularly consists in a new design approach - the task Oriented (TO) approach - supported by STOrM, a tool dedicated to the creation and manipulation of task Oriented Components (TOCs).
this article describes a method for choosing of interaction peripherals for wearable computer in Mobile and Augmented Reality context. this method is based on a transformational process starting by usertasks modeling...
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ISBN:
(纸本)9783540772217
this article describes a method for choosing of interaction peripherals for wearable computer in Mobile and Augmented Reality context. this method is based on a transformational process starting by usertasks modeling and their decomposition on user, machine and interaction tasks. Interaction tasks are expressed by interaction atoms (device independent) which are realized by interaction techniques related to interaction devices. A referential of interaction devices helps designers in choosing devices in relation withtasks to be supported and contextual requirements (functional and non-functional). A well organized selection process based on several devices/criteria matrixes allows explicit comparison of configurations in regard with usability criteria.
We propose a model-based approach to integrate human error analysis withtask modelling, introducing the concept of Error Pattern. Error Patterns are prototypical deviations from abstract taskmodels, expressed in a f...
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ISBN:
(纸本)9783540708155
We propose a model-based approach to integrate human error analysis withtask modelling, introducing the concept of Error Pattern. Error Patterns are prototypical deviations from abstract taskmodels, expressed in a formal way by a model transformation. A collection of typical errors taken from the literature on human errors is described within our framework. the intent is that the human factors specialist will produce the taskmodels taking an error-free perspective, producing small and useful taskmodels. the specialist will then choose from the collection of error patterns, and selectively apply these patterns to parts of the original task model, thus producing a transformed model exhibiting erroneous user behaviour. this transformed task model can be used at various stages of the design process, to investigate the system's reaction to erroneous behaviour or to generate test sequences.
the development of Collaborative Systems implies taking into account not only a greater number of users but also the interactions among them to accomplish complex tasks. Besides, the nature of these tasks is different...
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ISBN:
(纸本)9783540772217
the development of Collaborative Systems implies taking into account not only a greater number of users but also the interactions among them to accomplish complex tasks. Besides, the nature of these tasks is different from traditional tasks considered in mono-user systems. theses differences justify the need to tackle the task modelling for collaborative systems in a different way than traditionally, considering the special features that this kind of systems have. In this paper we propose a conceptual model to describe tasks and group tasks for multi-user systems in order to make a precise characterization. this characterization is applied to a simple example to show its applicability.
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