HumanISE - Other Publications

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    Are we on the right track to paperless hospitals?
    ( 2011) Fernanda Gonçalves ; Gabriel David
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    Automatic characterisation of Dansgaard-Oeschger events in palaeoclimate ice records
    ( 2023) Susana Alexandra Barbosa ; Maria Eduarda Silva ; Nuno Dias ; Rousseau,D ; 5567 ; 6363 ; 8707
    <p align="justify">Greenland ice core records display abrupt transitions, designated as Dansgaard-Oeschger (DO) events, characterised by episodes of rapid warming (typically decades) followed by a slower cooling. The identification of abrupt transitions is hindered by the typical low resolution and small size of paleoclimate records, and their significant temporal variability. Furthermore, the amplitude and duration of the DO events varies substantially along the last glacial period, which further hinders the objective identification of abrupt transitions from ice core records Automatic, purely data-driven methods, have the potential to foster the identification of abrupt transitions in palaeoclimate time series in an objective way, complementing the traditional identification of transitions by visual inspection of the time series.</p> <p align="justify">In this study we apply an algorithmic time series method, the Matrix Profile approach, to the analysis of the NGRIP Greenland ice core record, focusing on:</p> <p align="justify">- the ability of the method to retrieve in an automatic way abrupt transitions, by comparing the anomalies identified by the matrix profile method with the expert-based identification of DO events;</p> <p align="justify">- the characterisation of DO events, by classifying DO events in terms of shape and identifying events with similar warming/cooling temporal pattern</p> <p align="justify">The results for the NGRIP time series show that the matrix profile approach struggles to retrieve all the abrupt transitions that are identified by experts as DO events, the main limitation arising from the diversity in length of DO events and the method’s dependence on fixed-size sub-sequences within the time series. However, the matrix profile method is able to characterise the similarity of shape patterns between DO events in an objective and consistent way.</p>
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    Automatic Street Surface Modeling for Web-Based Urban Information Systems
    ( 2013) Dolores Robles Ortega,MD ; Ortega,L ; António Coelho ; Feito,F ; Augusto Sousa
    The growing demand for virtual urban models in emerging areas of interest has promoted a variety of techniques for automating the creation of virtual scenes with a high level of realism. However, visualization is not always the only aim in many applications. Increasingly, urban systems are also required for management, analysis, or interaction with very different types of information. Three-dimensional (3D) urban entities should maintain neighbor relations, and being inserted in a geospatial database in order to enable associative queries, one of the most important features associated with 3D urban geographic information system (GIS). Additional challenges are found when these three-dimensional models are implemented in web-based systems. This paper proposes a method for automatic modeling of buildings and street surfaces of entire real cities by combining computer graphics, computational geometry, and GIS techniques. The sources of information employed are two-dimensional (2D) GIS and its associated digital elevation models (DEMs) in order to provide real terrain features. The virtual environment supports web-based navigation and data interaction. The case study was performed in Jaen, Spain, a hilly city with more than 1,000 blocks of buildings. The 3D city model was generated using the public data provided by the general cadastral office of Jaen and the DEM information of this area. The topological relations between the geometric urban entities were inserted in the spatial database and the graphics and thematic information could be accessed through the Internet. All these features are highly desirable for decision making in urban planning. DOI: 10.1061/(ASCE)UP.1943-5444.0000131. (C) 2013 American Society of Civil Engineers.
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    Correction to: Collaborative immersive authoring tool for real-time creation of multisensory VR experiences (Multimedia Tools and Applications, (2019), 10.1007/s11042-019-7309-x)
    ( 2020) Hugo Rafael Mendes ; Miguel Correia Melo ; José Luís Martins ; Maximino Bessa ; 5095 ; 7622 ; 5408 ; 6516
    In the original publication, Figs. 1 and 2 were interchange and the citation of Fig. 1 in the third paragraph of section 2.2 Authoring tools for multisensory VR experiences should be removed. The citation of Fig. 2 in section 3.1 System architecture should be changed to Fig. 1 and the citation of Fig. 1 in the same section should be change to Fig. 2. Also, the acknowledgement is missing in the original publication. The corrected figures and acknowledgement are presented in this erratum. © 2020, Springer Science Business Media, LLC, part of Springer Nature.
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    The Dawn of the Human-Machine Era: A forecast of new and emerging language technologies
    ( 2021) Sayers,D ; Sousa-Silva,R ; Höhn,S ; Ahmedi,L ; Allkivi-Metsoja,K ; Anastasiou,D ; Benuš,Š ; Bowker,L ; Bytyçi,E ; Catala,A ; Çepani,A ; Chacón-Beltrán,R ; Dadi,S ; Dalipi,F ; Despotovic,V ; Doczekalska,A ; Drude,S ; Fort,K ; Fuchs,R ; Galinski,C ; Gobbo,F ; Gungor,T ; Guo,S ; Höckner,K ; Láncos,PL ; Libal,T ; Jantunen,T ; Jones,D ; Klimova,B ; Korkmaz,EE ; Maucec,MS ; Miguel Correia Melo ; Meunier,F ; Migge,B ; Mititelu,VB ; Névéol,A ; Rossi,A ; Pareja-Lora,A ; Sanchez-Stockhammer,C ; Sahin,A ; Soltan,A ; Soria,C ; Shaikh,S ; Turchi,M ; Yildirim Yayilgan,S ; 5408
    New language technologies are coming, thanks to the huge and competing private investment fuelling rapid progress; we can either understand and foresee their effects, or be taken by surprise and spend our time trying to catch up. This report scketches out some transformative new technologies that are likely to fundamentally change our use of language. Some of these may feel unrealistically futuristic or far-fetched, but a central purpose of this report - and the wider LITHME network - is to illustrate that these are mostly just the logical development and maturation of technologies currently in prototype. But will everyone benefit from all these shiny new gadgets? Throughout this report we emphasise a range of groups who will be disadvantaged and issues of inequality. Important issues of security and privacy will accompany new language technologies. A further caution is to re-emphasise the current limitations of AI. Looking ahead, we see many intriguing opportunities and new capabilities, but a range of other uncertainties and inequalities. New devices will enable new ways to talk, to translate, to remember, and to learn. But advances in technology will reproduce existing inequalities among those who cannot afford these devices, among the world’s smaller languages, and especially for sign language. Debates over privacy and security will flare and crackle with every new immersive gadget. We will move together into this curious new world with a mix of excitement and apprehension - reacting, debating, sharing and disagreeing as we always do. Plug in, as the human-machine era dawns.
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    Digital Services in Immersive Urban Virtual Environments
    ( 2013) Meira,C ; Freitas,J ; Luis Barbosa ; Miguel Correia Melo ; Maximino Bessa ; Luís Gonzaga Magalhães
    Virtual Environments (VE) systems may provide a new way to deliver information and services in many areas, for example in tourism, urban planning and education. In urban VE there is a close link between the virtual environment and the urban environment that are intended to represent. These VE can be an intuitive way to access a set of services with a direct association to the real object or entity to which they are related. In this article, we describe a case study that aimed at exploring the possibility of using new interfaces to exploit and use services in urban VE with a greater sense of immersiveness. The results indicate that the VE interfaces are a natural and intuitive access to digital services. While users have felt a greater difficulty in performing some of the tasks in immersive scenario, the majority considered that this scenario provided a greater sense of immersion and realism.
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    The Dotted-Board Model: A new MIP model for nesting irregular shapes
    ( 2013) Toledo,FMB ; Maria Antónia Carravilla ; Cristina Ribeiro ; José Fernando Oliveira ; António Miguel Gomes
    The nesting problem, also known as irregular packing problem, belongs to the generic class of cutting and packing (C&P) problems. It differs from other 2-D C&P problems in the irregular shape of the pieces. This paper proposes a new mixed-integer model in which binary decision variables are associated with each discrete point of the board (a dot) and with each piece type. It is much more flexible than previously proposed formulations and solves to optimality larger instances of the nesting problem, at the cost of having its precision dependent on board discretization. To date no results have been published concerning optimal solutions for nesting problems with more than 7 pieces. We ran computational experiments on 45 problem instances with the new model, solving to optimality 34 instances with a total number of pieces ranging from 16 to 56, depending on the number of piece types, grid resolution and the size of the board. A strong advantage of the model is its insensitivity to piece and board geometry, making it easy to extend to more complex problems such as non-convex boards, possibly with defects. Additionally, the number of binary variables does not depend on the total number of pieces but on the number of piece types, making the model particularly suitable for problems with few piece types. The discrete nature of the model requires a trade-off between grid resolution and problem size, as the number of binary variables grows with the square of the selected grid resolution and with board size.
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    FouSE: An android tool to help in the teaching of fourier series expansions in undergraduate education
    ( 2013) Reis,MJCS ; Soares,S ; Cardeal,S ; Raul Morais ; Emanuel Peres Correia ; Ferreira,PJSG
    This paper presents an Android application to help in the teaching of Fourier series expansions in undergraduate Electrical Engineering. Consequently, it discusses the teaching of Fourier series concepts in connection with undergraduate Electrical Engineering education; some of the basic Fourier series theory is briefly reviewed. The presented Android application has been found useful in this context. As expected, the application has an easy-to-use, friendly interface, and can be viewed as a tool to help undergraduate students test and assess the Fourier series expansions on a typical set of signals, whose analytical Fourier series coefficients were found during the theoretical lectures. Additionally, some of its main characteristics include the ability for the students to control the total approximation error and the number of terms/harmonics used in the expansion.
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    A framework for wireless sensor networks management for precision viticulture and agriculture based on IEEE 1451 standard
    ( 2013) Fernandes,MA ; Matos,SG ; Emanuel Peres Correia ; Carlos Rompante Cunha ; Lopez,JA ; Ferreira,PJSG ; Reis,MJCS ; Raul Morais
    Precision viticulture (PV) and precision agriculture (PA) requires the acquisition and processing of a vast collection of data coming typically from large scale and heterogeneous sensor networks. Unfortunately, sensor integration is far from being simple due to the number of incompatible network specifications and platforms. The adoption of a common, standard communication interface would allow the engineer to abstract the relation between the sensor and the network. This would reduce the development efforts and emerge as an important step towards the adoption of "plug-and-play" technology in PA/PV sensor networks. This paper explores this need and introduces a framework for smart data acquisition in PA/PV that relies on the IEEE 1451 family of standards, which addresses the transducer-to-network interoperability issues. The framework includes a ZigBee end device (sMPWiNodeZ),,as an IEEE 1451 WTIM (Wireless Transducer Interface Module), and an IEEE 1451 NCAP (Network Capable Application Processor) that acts as gateway to an information service provider and WSN (Wireless Sensor Network) coordinator. The paper discusses the proposed IEEE 1451 system architecture and its benefits in PA/PV and closes with results/lessons learned from in-field trials towards smarter WSN.
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    GIS2R-Augmented Reality and 360 degrees Panoramas Framework for Geomarketing
    ( 2013) Leonel João Dias ; António Coelho ; Rodrigues,A ; Rebelo,C ; Cardoso,A
    Recent developments in the areas of augmented reality, 360 degrees panoramas, social networks and geographical information systems enable the development of new solutions, which can contribute to several areas. This paper presents a new, Unity3D [8] based framework for the development of immersive augmented reality solutions and 360 degrees panoramas. This solution allows the aggregation of spatial information from disparate and heterogeneous sources, comprising the visualization of points of interest (POIs), image overlays (photographs), 3D objects and navigation between panoramas. This framework also features a strong multiplatform (web and mobile) component, and the possibility of developing new functional modules that can be easily plugged in. A prototype based on this solution, for geomarketing, is also presented.
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    Identifying different visual patterns in web users behaviour
    ( 2013) Goncalves,M ; Tânia Vilela Rocha ; Luís Gonzaga Magalhães ; Emanuel Peres Correia ; Maximino Bessa ; Chalmers,A
    On the internet one can find all kinds of information and perform a multitude of tasks such as searching for information about any subject, purchase goods and services, or enquiring about a particular company. When navigating the web, our focus (where we look) can be captured involuntary through a visual stimulus, or may be directed in a controlled manner depending on the task that we are performing. The layouts of web sites range from simple to highly complex. When creating new layouts, knowing what information is most important when a user is performing a task and which areas are supposed to attract his/her attention are important issues in order to make a web site easier to interpret and consequently their usability. In this paper we present an eye tracking study of users' visual behaviour when surfing on websites and investigate if it is possible to determine likely visual patterns. We show that the visual patterns are different depending on the task that is being performed and not on the web site where it is being carried out. © 2011 ACM.
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    Immersive Learning Research Network
    ( 2016) Allison,C ; Leonel Morgado ; Pirker,J ; Beck,D ; Richter,J ; Gütl,C
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    Mobile Advertising for the Catering Industry
    ( 2013) Leonel João Dias ; António Coelho
    This paper present the creation of a platform, highly scalable and modular, providing new services to the advertising and marketing for the catering industry, taking advantage of the spatial context and user preferences, benefiting from the advantages of Mobile Advertising and Mobile Augmented Reality.
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    Preface
    ( 2016) Vaz de Carvalho,C ; Escudeiro,P ; António Coelho
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    Preface
    ( 2017) de Carvalho,CV ; António Coelho ; Escudeiro,P
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    Preface
    ( 2018) Ricardo Campos ; Sérgio Nunes ; Jatowt,A ; Alípio Jorge ; 4981 ; 5782 ; 5448
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    Prefácio
    ( 2016) Gonçalves,D ; Maximino Bessa
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    Proceedings of the SLACTIONS 2012 research conference on virtual worlds - Life, imagination, and work using metaverse platforms: November 15-17, 2012
    ( 2012) Maria da Glória Fraga ; Daniela Pedrosa ; Fernando Marques ; Vinicius Loureiro ; Leonel Morgado ; Yesha Sivan ; Ana Maia ; Gonçalo Cruz
    Edited proceedings of the SLACTIONS 2012 conference.
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    Project Management Success I-C-E Model – A Work in Progress
    ( 2013) Marques,A ; Varajão,J ; Joaquim João Sousa ; Emanuel Peres Correia