1,721,081 research outputs found
Post-it notes: supporting teachers in authoring vocabulary game contents
No full textIn this work, we present Post-it Notes, a system for supporting vocabulary acquisition in a foreign language for primary school children. The system consists of an authoring tool designed for teachers and a mobile application for students. The authoring tool is a web application for creating language learning materials. It supports inserting terms, each one defining a specific meaning of a word, specifying their syntax, definition, phonetics, pronunciation and descriptive image. The correspondences between terms represent translations between languages. Furthermore, the authoring tool allows teachers to create stories, organised as a sequence of sentences, including a set of hidden words for reinforcing their usage. Once published, the story is accessible from the mobile application, which assists children in following the plot. The learning game consists of guessing the missing words by taking pictures of augmented objects distributed in the surrounding environment. A similar interface allows the student to rehearse specific term sets, attaching visual markers to real objects. We evaluated the authoring tool with teachers. The results show both good usability and good acceptance. In addition, we also carried out an observational study in a primary school, describing the children’s behaviour in interacting with the mobile application and group dynamics
Recommendation centre: inspecting and controlling recommendations with radial layouts
Full text linkIn this paper we propose to use radial layouts for representing the matching between the user’s interest and particular objects
and/or categories. The technique supports the visualization of different data: we discuss here the relationships on social networks,
the related videos on YouTube and topics in Wikipedia. The user can change the position of the object in the representation,
which can be used in recommender systems for providing a fine-grained control over its internal preference representatio
A model-based approach for gesture interfaces.
No full textThe interaction technologies had substantial enhancements
in later years, with the introduction of devices whose capabilities
changed the way people interact with games and
mobile devices. However, this change did not really affected
desktop systems. Indeed, few applications are able to exploit
such new interaction modalities in an effective manner.
This work envisions the application of model-based
approaches for the engineering of gesture user interfaces, in
order to provide the designer with a comprehensive theoretical
framework for usage-centred application design. The
differences between existing gesture-enabling devices will
be tackled applying more general solutions for multi-device
user interfaces
MARIA: A universal, declarative, multiple abstraction-level language for service-oriented applications in ubiquitous environments
No full textOne important evolution in software applications is the spread of service-oriented architectures
in ubiquitous environments. Such environments are characterized by a wide set of interactive
devices, with interactive applications that exploit a number of functionalities developed beforehand
and encapsulated in Web services. In this article, we discuss how a novel model-based UIDL can
provide useful support both at design and runtime for these types of applications. Web service
annotations can also be exploited for providing hints for user interface development at design time.
At runtime the language is exploited to support dynamic generation of user interfaces adapted to
the different devices at hand during the user interface migration process, which is particularly
important in ubiquitous environment
The Role of HCI Models in Service Front End Development
No full textThis article discusses how human–computer interaction (HCI) models can support the development of interactive
applications based on Web services. It also introduces a specific method exploiting such models for this purpose and
the associated tool support. An example application of the method for an educational scenario is presented. The
results of an early test of the development environment are reported as well. Lastly, some conclusions are drawn
along with indications for future work
Predicting the impact of advertisements on web pages aesthetic impressions
No full textIn this paper we study the impact of advertisements on a
predictive model for web pages impressions, calculated according to a set
of features on the rendered page images. We analysed the effects on two
different predictors, the colourfulness and the visual complexity.
We compared the prediction against ground-truth values, obtained through
a user study. We conclude that the prediction model behaves correctly
for the complexity, but it is not able to predict the increase on the
colourfulness ratings
A model-based approach to address the design of Web 2.0
No full textCreating an interactive application based on pre-existing
functionalities poses a number of novel issues in the design
process. We discuss a method, associated with a new model-based
language and a supporting tool, which aims to address such issues
in multi-device contexts. One specific aspect of this method is the
possibility of supporting composition of user interfaces associated
with different services. In addition, the possibility to specify
dynamic user interfaces, Web services accesses and scripts allows
designers to declaratively describe Rich Internet Applications as
well
A gestural concrete user interface in MARIA
No full textIn this paper, we describe a solution for engineering and
modelling user interfaces for supporting input collected
through gesture recognition hardware. We describe how
we applied such approach by extending the MARIA UIDL,
and how the modelling solution can be applied to other UI
toolkits. In addition, we detail the model-to-code transformation
for obtaining a running application through
an example case study
Towards chatbots as recommendation interfaces
No full textProviding tourists with the information they need in a timely and understandable manner is a key objective for promoting cultural heritage. Currently, tourists often spend only a few days in a city or in an entire region, so they need recommendations for optimizing the visit. In this paper, we introduce the objectives of the Tourisitific project, in which we aim to create a recommender system for travel information, supporting a lightweight access through chatbots. In this way, we will support travellers during their visits without burdening them with the installation of dedicated apps. In addition, we will help small and micro touristic operators in building their presence on the web with a familiar and easy to manage interface
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