RDF description Dr. Diego Casado-Mansilla

Research Associate


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Oct. 2015  -  Present
dcasado [at] deusto.es

 +34 944 139 003 - ext: 2977

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[u' @article{sanchez-corcuera_persuasion-based_2020, title = {Persuasion-based recommender system ensambling matrix factorisation and active learning models}, issn = {1617-4909, 1617-4917}, url = {http://link.springer.com/10.1007/s00779-020-01382-7}, doi = {10.1007/s00779-020-01382-7}, abstract = {Recommendation systems are gaining popularity on Internet platforms such as Amazon, Netflix, Spotify or Booking. As more users are joining these online consumer and entertainment sectors, the profile-based data for providing accurate just-intime recommendations is rising thanks to strategies based on collaborative filtering or content-based metrics. However, these systems merely focus on providing the right item for the users without taking into account what would be the best strategy to suggest the movie, the product or the song (i.e. the strategy to increase the success or impact of the recommendation). Taking this research gap into consideration, this paper proposes a profile-based recommendation system that outputs a set of potential persuasive strategies that can be used with users with similar characteristics. The case study presented provides tailored persuasive strategies to make office-based employees enhance the energy efficiency at work (the dataset used on this research is specific of this sector). Throughout the paper, shreds of evidence are reported assessing the validity of the proposed system. Specifically, two approaches are compared: a profile-based recommendation system (RS) vs. the same RS enriched by adding an ensemble with an active learning model. The results shed light on not only providing effective mechanisms to increase the success of the recommendations but also alleviating the cold start problem when newcomers arrive.}, language = {en}, urldate = {2020-03-24}, journal = {Personal and Ubiquitous Computing}, author = {S\xe1nchez-Corcuera, Rub\xe9n and Casado-Mansilla, Diego and Borges, Cruz E. and L\xf3pez-de-Ipi\xf1a, Diego}, month = mar, year = {2020}, keywords = {IF1.735, Persuasive Technology, Q3, Recsys, cold-user problem, preference recommendation, user profiling} }']

[u' @article{irizar-arrieta_user_2020, title = {User perspectives in the {Design} of {Interactive} {Everyday} {Objects} for {Sustainable} {Behaviour}}, issn = {10715819}, url = {https://linkinghub.elsevier.com/retrieve/pii/S1071581919301570}, doi = {10.1016/j.ijhcs.2019.102393}, abstract = {Addressing e\ufb03cient management of energy has become a central objective due to the scarcity of traditional energy sources and global warming. To cope with this overarching issue, some technological solutions such as Smart Grids, Internet of Things or Demand response are proposed. However, the majority of them overlooks the role of human beings in the equation. Moreover, the very nascent body of research combining human and machine intelligence proposes methods, frameworks, and guidelines which vary depending on the application scenario complicating the selection of gold-standards to ensure seamless cooperation between smart devices and people. Hence, the purpose of this paper is to provide a set of design-hypotheses to devise augmented objects that ally with their users to reduce energy consumption. We expect designers, engineers, makers or even hobbyists in the intersection between technology-enablers (through IoT) and behavioural scientists to bene\ufb01t from them. To this aim, we describe the results of a long-term study in o\ufb03ce-based workplaces, where participants were randomly assigned to di\ufb00erent experimental conditions (persuasion, dashboard, and automation) to increase their energy-e\ufb03cient behaviour. Grounded Theory analysis was applied over qualitative data collected during focus group sessions obtaining \ufb01ve themes around a central category. The resulting themes were linked to design-hypotheses for IoT devices which were then tested through the implementation of a new IoT object also conceived for the workplace.}, language = {en}, urldate = {2020-01-14}, journal = {International Journal of Human-Computer Studies}, author = {Irizar-Arrieta, Ane and Casado-Mansilla, Diego and Garaizar, Pablo and L\xf3pez-de-Ipi\xf1a, Diego and Retegi, Aiur}, month = jan, year = {2020}, keywords = {JCR2.006, Q2}, pages = {102393} }']

[u' @article{irizar-arrieta_addressing_2020, title = {Addressing {Behavioural} {Technologies} {Through} the {Human} {Factor}: {A} {Review}}, volume = {8}, issn = {2169-3536}, shorttitle = {Addressing {Behavioural} {Technologies} {Through} the {Human} {Factor}}, url = {https://ieeexplore.ieee.org/document/9035412/}, doi = {10.1109/ACCESS.2020.2980785}, abstract = {Energy-efficiency related research has reached a growing interest in recent years due to the imminent scarcity of non-renewable resources in our environment and the impending impacts their usage have on our environment. Thus, facing the reduction of energy waste and management has become a pivotal issue in our society. To cope with energy inefficiency, the scientific research community has identified the promotion of people\u2019s behaviour change as a critical field to foster environmental sustainability. However, the body of literature shows a lack of systematic methods and processes to reach a common ground when designing technology for promoting sustainable behaviour change. Therefore, this paper contributes with a thorough review and analysis of state of the art. Firstly, theoretical works related to behaviour change are collected and studied to clarify their main concepts and theories. Secondly, the different technologies, processes, methods and techniques applied in the field are reviewed to find diverse strategies in the application of the previously explained theoretical domains. Moreover, a wide range of systems developed to improve energy efficiency through human behaviour change is analysed (from augmented objects to the Internet of Things, digital applications or websites). Finally, the detected research gaps are listed to guide future research when aiming to raise the awareness of individuals through Information and Communication Technologies.}, urldate = {2020-04-29}, journal = {IEEE Access}, author = {Irizar-Arrieta, Ane and Gomez-Carmona, Oihane and Bilbao-Jayo, Aritz and Casado-Mansilla, Diego and Lopez-De-Ipina, Diego and Almeida, Aitor}, year = {2020}, keywords = {Activity Recognition, Behaviour change, Behaviour modelling, ICT, Intelligent Environments, Internet of Things, JCR4.098, Q1, Sustainability, Sustainable Behaviour Change}, pages = {52306--52322} }']

[u' @article{iglesias-urkia_integrating_2019, title = {Integrating {Electrical} {Substations} within the {IoT} using {IEC} 61850, {CoAP} and {CBOR}}, volume = {Early Acccess}, issn = {2327-4662}, doi = {10.1109/JIOT.2019.2903344}, abstract = {Electrical substations are crucial elements of Smart Grids where they are mainly responsible for voltage transformations. However, due to the integration of distributed energy resources in the grid, substations now have to provide additional grid management capabilities which in turn require supervision and automation solutions for large low-voltage grids. A recurring challenge in such deployments are siloed systems that are due to non-interoperable communication protocols across substations: although most substations\u2019 communication is based on the International Electrotechnical Commission (IEC) 61850 standard, deployed legacy protocols lag behind modern communication technologies in terms of performance, hindering the full transition to lightweight protocols. This paper demonstrates that IEC 61850 can be fully mapped to the Constrained Application Protocol (CoAP) in combination with the Concise Binary Object Representation (CBOR) format while improving system performance compared to existing alternatives (e.g. WS-SOAP and HTTP). On average, CoAP+CBOR needs 44\\% and 18\\% of the message size and 71\\% and 85\\% of the time compared to systems based on HTTP and WS-* Web Services, respectively \u2013 this is especially relevant for resource-constrained devices and networks in electrical grids. In addition, CoAP is based on the Representational State Transfer (REST) architectural style, which supports system integration and interoperability through uniform identification and interaction. This approach fosters the standard-compliant integration of legacy platforms with modern substations as well as current IoT systems in neighboring domains such as building management and infrastructure automation systems.}, journal = {IEEE Internet of Things Journal}, author = {Iglesias-Urkia, Markel and Casado-Mansilla, Diego and Mayer, Simon and Bilbao, Josu and Urbieta, Aitor}, month = jun, year = {2019}, keywords = {CBOR, CoAP, Electrical Substations, IEC 61850, IoT, Q1, benchmarking, energy, jcr5.863}, pages = {1--1} }']

[u' @inproceedings{bounsiar_how_2019, address = {Toledo}, title = {How to {Enable} {Delay} {Tolerant} {Network} {Solutions} for {Internet} of {Things}: {From} {Taxonomy} to {Open} {Challenges}}, volume = {31}, doi = {https://doi.org/10.3390/proceedings2019031024}, abstract = {Internet of Things (IoT) is witnessing an increasing range of application domains (industry 4.0, eHealth, smart city, etc.). Meanwhile, IoT is still facing communication challenges because of limited capabilities in computing, storage and energy constraints of smart objects. The use of Delay Tolerant Network (DTN) as basis for communication in IoT is promising but needs more development. In this paper, we present a literature review and a classification of DTN routing protocols. Furthermore, we survey a number of DTN solutions for IoT and propose a new taxonomy to motivate the importance of enabling DTN for IoT applications. The novelty of this classification is the focus on X-DTN category, which combines Delay Tolerant schemes with new technologies (eg, Fog Computing). We also point out some open issues for potential Delay Tolerant IoT schemes.}, booktitle = {Proceedings of 13th {International} {Conference} on {Ubiquitous} {Computing} and {Ambient} \u202a{Intelligence} {UCAmI} 2019}, publisher = {MDPI}, author = {Bounsiar, Selma and Benhamida, Fatima Z and Henni, Abderrazak and L\xf3pez de Ipi\xf1a, Diego and Casado-Mansilla, Diego}, year = {2019}, pages = {11} }']

[u" @incollection{gomez-carmona_opportunities_nodate, series = {Ambient {Intelligence} and {Smart} {Environments}}, title = {Opportunities and {Challenges} of {Technology}-based {Interventions} to {Increase} {Health}-awareness in the {Workplace}}, volume = {25}, isbn = {978-1-61499-972-0}, abstract = {Well-being at work is gaining an increasing importance on the overall health promotion as the workplace is considered an adequate setting to support health-related interventions reaching large audiences. In fact, an increasing number of initiatives are being carried out to influence employees towards healthier lifestyles in later years. However, despite demonstrating moderate efficacy, the body of literature shows that the lack of adherence of the target audience to the interventions is an important factor to overcome in order to attain higher success. To increase employees' motivation and prevent early drop-out, disengagement or high attrition rates, this work presents an intervention methodology based on the Internet of Things (IoT) paradigm. Specifically, it presents a novel concept of a participatory worker-centric IoT solution for enhancing individuals' well-being in office environments. This approach seeks to stress the significance of empowering workers providing to them fine-grained control of their own well-being and self-care which correlates to higher rates of participation in health promotion initiatives. Along this chapter the main challenges associated with the design and development of technology-based interventions are reviewed. Moreover, the value of increasing the acceptance and adoption of the presented IoT approach from the employee's perspective is analyzed in a comprehensive manner.}, booktitle = {Transforming {Ergonomics} with {Personalized} {Health} and {Intelligent} {Workplaces}}, publisher = {IOS Press, Incorporated}, author = {G\xf3mez-Carmona, Oihane and Casado-Mansilla, Diego and Garcia-Zubia, Javier}, keywords = {Intelligent Environments, Internet of Things, Participatory Sensing, Wellness Promotion, workplace}, pages = {14} }"]

[u" @inproceedings{casado-mansilla_side_2019, address = {Glasgow, Schottland}, title = {On the {Side} {Effects} of {Automation} in {IoT}: {Complacency} and {Comfort} vs. {Relapse} and {Distrust}}, url = {https://arxiv.org/abs/1911.08657}, doi = {arXiv:1911.08657}, abstract = {Automation through IoT brings with it a whole new set of philosophical and ethical implications that we barely began to address. However, it is widely considered by many scholars as the panacea to overcoming the majority of societal issues. The case of energy efficiency as an action for tackling climate change is not different: demand-response proposals or occupancy-driven energy management systems crowd the current research agenda on energy efficiency. However, there are still very few studies that have reported the effects of automation in the mid or long term beyond energy reduction (eg emotional feelings derived to interact with automation, complacency to the devices or perceived value of the automation throughout the time). In this workshop article, we report scientific evidence of a study conducted in ten workplaces during more than one year where we found that automating some electronic devices of common use (ie moving away or preventing subjects from the control of these devices) in favour of comfort and energy efficiency, is associated with a reduction of the users' confidence in science and technology as a mean to solve all environmental current problems and reduce the willingness of people to act in favor of the environment.}, booktitle = {Proceedings of the {CHI} 2019 {Workshop} on {New} {Directions} for the {IoT}: {Automate}, {Share}, {Build}, and {Care}}, publisher = {arXiv}, author = {Casado-Mansilla, Diego and Garaizar, Pablo and Irizar-Arrieta, Ane and {Diego L\xf3pez de Ipi\xf1a}}, year = {2019} }"]

[u' @article{gomez-carmona_enhancing_2019, title = {Enhancing street-level interactions in smart cities through interactive and modular furniture}, issn = {1868-5137, 1868-5145}, url = {http://link.springer.com/10.1007/s12652-019-01577-8}, doi = {10.1007/s12652-019-01577-8}, abstract = {The idea of smart cities is becoming part of our reality and it represents the transformation that urban areas should undergo to create more sustainable and efficient spaces. Through the combination of technology to gather data, people to produce them and stakeholders\u2019 creativity, the smart cities provide tools and mechanisms that bring greater value to the environment and, in the end, improve citizens quality of life. Although the concept of a smart city is evolving fast in terms of technology adoption and user involvement, the new interactive objects that will be deployed in those smart environments to create street-level interactions are still dubious. Hence, this article contributes to presenting the implementation of a multifunctional digital system, in the form of smart furniture, to be deployed in the smart cities. The proposed smart object is a modular and customizable kiosk, resembling a totem, specifically designed to fit into this digital transformation and to respond to users\u2019 needs by offering contextualized information and services. The included integrated hardware elements interact digitally and physically with users, sense environmental conditions and send the captured data to the cloud, where remote management tools allow to control and configure the whole setup. The presented smart totem has been customized for two different use-cases to highlight the adaptability of the system to fit for different purposes. Moreover, one of the use-cases has been thoroughly evaluated after being deployed for 6 months in the wild at the Chinese and Japanese Garden of Singapore. The quantitative data gathered throughout this study along with the obtained qualitative users\u2019 feedback, help to provide insights for the convenience of deploying new interactive furniture in smart cities, the adoption barriers of such physical systems, and the new opportunities that these street-level interactions can elicit.}, language = {en}, urldate = {2019-11-19}, journal = {Journal of Ambient Intelligence and Humanized Computing}, author = {G\xf3mez-Carmona, Oihane and S\xe1daba, Juan and Casado-Mansilla, Diego}, month = nov, year = {2019}, keywords = {IF1.910, Interactive kiosk, Q3, Smart Cities, Smartoki} }']

[u' @inproceedings{kamara-esteban_can_2019, address = {Thessaloniki, Greece}, title = {Can {I} {Shift} {My} {Load}? {Optimizing} the {Selection} of the {Best} {Electrical} {Tariff} for {Tertiary} {Buildings}}, doi = {https://doi.org/10.1007/978-3-030-34995-0_60}, abstract = {Sustainability is strongly related to the appropriate use of available resources, being an important cornerstone in any company\u2019s administration due to the direct influence on its efficiency and ability to compete in the global market. Therefore, the intelligent and proper management of these resources is a pressing matter in terms of cost savings. Among the possible alternatives for optimisation, the one regarding electricity consumption stands out due to its strong influence on the expenses account. In general, this type of optimisation can be carried out from two different perspectives: one that concerns the efficient use of energy itself and the other related to the proper adjustment of the electricity contract so that it meets the infrastructure needs while avoiding extra costs derived from poorly sized bills. This paper describes the application of an artificial intelligence based methodology for the optimisation of the \u2026}, booktitle = {International {Conference} on {Computer} {Vision} {Systems}}, publisher = {Springer, Cham}, author = {Kamara-Esteban, Oihane and Borges, Cruz E. and Casado-Mansilla, Diego}, year = {2019}, pages = {658--669} }']

[u' @inproceedings{benhamida_smartworkplace:_2019, address = {Bilbao, Spain}, series = {\\{{CEUR}\\} {Workshop} {Proceedings}}, title = {{SmartWorkplace}: {A} {Privacy}-based {Fog} {Computing} {Approach} to {Boost} {Energy} {Efficiency} and {Wellness} in {Digital} {Workplaces}}, volume = {Vol-2530}, url = {http://ceur-ws.org/Vol-2530/paper2.pdf}, abstract = {The massive digitalization of modern society has transformed human lifestyles in several dimensions ranging from social interactions to healthcare and wellness, including transportation systems, jobs, machinery, or energy management. However, physical environments and people have not evolved at the same pace, leaving a challenging gap between the advances in technology and how society efficiently interact with it. One specific case is the workplaces where digital literacy is not widespread among all employees (e.g. blue or grey collars) and the advent of such digitalization is a reality. This work presents an architectural approach to improve energy efficiency and wellness at work (by suggesting new behaviours and dynamics) while maintaining user comfort and keeping user\u2019s privacy. More specifically, this approach\u2014inspired by the Fog computing paradigm\u2014features a hierarchical scheme based of privacy maintenance which (1) collects real-time data from the users at the workplace environment; (2) processes these data in either in the Fog or Cloud infrastructure depending on the data sensitiveness; and (3) provides feedback to the user along with a set of recommendations related to energy usage. As such, the user is included in the whole data-cycle which allows employees to decide what information can be monitored, where it can be computed and the appropriate ICT channels to receive the feedback.}, language = {en}, booktitle = {Proceedings of the 1st {Workshop} on {Cyber}-{Physical} {Social} {Systems}}, publisher = {CEUR-WS.org}, author = {Benhamida, Fatima Z and Casado-Mansilla, Diego and Navarro, Joan and L\xf3pez-de-Ipi\xf1a, Diego and G\xf3mez-Carmona, Oihane and Zaballos, Agust\xedn}, year = {2019}, keywords = {Edge Computing, Intelligent Environments, Internet of Things, workplace}, pages = {7} }']

[u' @incollection{iglesias-urkia_trilateral_2019, address = {Switzerland}, series = {Communications in {Computer} and {Information} {Science}}, title = {{TRILATERAL}: {A} {Model}-{Based} {Approach} for {Industrial} {CPS}\u2013{Monitoring} and {Control}}, abstract = {Internet of Things (IoT) devices are advanced embedded systems within a Cyber-Physical System (CPS) that require to be monitored and controlled. Such necessities are becoming increasingly common due to the advent of the Industry 4.0 among other smart deployments. A recurring issue in this field is that existing and new projects are reinventing the wheel by starting the development and deployment of IoT devices from scratch. To overcome such loss of efficiency in development, we propose to use Software Product Line (SPL) and Model-Based Engineering (MBE) since they seem promising in the literature in order to accelerate and ease the development software while reducing bugs and errors, and hence, costs. Additionally, a personalized solution is needed since not all Industrial CPSs (ICPSs) are composed by the same devices or use the same IoT communication protocols. Thus, we realized that a Domain Specific Language (DSL) along with a standard, will allow the user to graphically model the ICPS for this to be monitored and controlled. Therefore, this work presents TRILATERAL, a SPL Model Based tool that uses a Domain Specific Language (DSL) to allow users to graphically model ICPSs with a IEC 61850 based metamodel, a standard originally designed for electrical substations but that has also been used in other domains. TRILATERAL automatically generates an artifact in order to create a middleware between the ICPS and the monitoring system to monitor and control all the devices within the ICPS. This tool is designed, implemented and finally, validated with a real use case (catenary-free tram) where different lessons have been learned.}, number = {1161}, booktitle = {Model-{Driven} {Engineering} and {Software} {Development}. {MODELSWARD} 2019.}, publisher = {Springer, Cham}, author = {Iglesias-Urkia, Markel and Iglesias, Aitziber and L\xf3pez-Davalillo, Beatriz and Charramendieta, Santiago and Casado-Mansilla, Diego and Sagardui, Goiuria and Urbieta, Aitor}, year = {2019}, pages = {376--398} }']

[u' @inproceedings{gomez-carmona_simplicity_2019, address = {Bilbao, Spain}, title = {Simplicity is {Best}: {Addressing} the {Computational} {Cost} of {Machine} {Learning} {Classifiers} in {Constrained} {Edge} {Devices}}, isbn = {978-1-4503-7207-7}, shorttitle = {Simplicity is {Best}}, url = {http://dl.acm.org/citation.cfm?doid=3365871.3365889}, doi = {10.1145/3365871.3365889}, abstract = {The potential of the Internet of Things (IoT) has traditionally grown upon the basis of its connectivity and communication capabilities, where low-power devices gather physical data and send them to remote high-performance nodes. However, the Edge Computing paradigm is changing the Cloud-based approach moving the processing and data computation towards the edge, getting the computation closer to the data source. As a consequence, extending intelligence to embedded platforms at the edge involves addressing differently the data processing and the computation techniques to overcome the constraints of the IoT devices. To contribute to this new challenge, we analyze the feasibility of deploying different supervised Machine Learning techniques applied to human activity recognition into two single-board computers, namely a Raspberry Pi 3B+ and a Raspberry Zero W. To that end, we present the classification example of a drinking activity monitoring system as a case study. The results show that an initial optimization process (i.e. selecting the most important features of the raw sensor data) is preeminent to provide a substantial improvement on the classification process with a minimal loss of performance and saving valuable computational cost. Thus, the presented approach seeks to stress the importance of understanding the initial data and studying the most relevant characteristics of the signal to overcome the limitations of the IoT devices and succeed in bringing embedded Machine Learning to the edge.}, language = {en}, urldate = {2019-11-11}, booktitle = {Proceedings of the 9th {International} {Conference} on the {Internet} of {Things} - {IoT} 2019}, publisher = {ACM Press}, author = {G\xf3mez-Carmona, Oihane and Casado-Mansilla, Diego and L\xf3pez-de-Ipi\xf1a, Diego and Garc\xeda-Zubia, Javier}, year = {2019}, keywords = {Edge Computing, Internet of Things, Smart Environments, machine learning}, pages = {1--8} }']

[u' @inproceedings{benhamida_toward_2019, address = {Bilbao, Spain}, title = {Toward a {Delay} {Tolerant} {Internet} of {Things}}, volume = {24}, doi = {https://doi.org/10.1145/3365871.3365908}, abstract = {Internet of Things (IoT) is widely spread to reach many application domains (industry 4.0, eHealth, smart city...). However, smart objects in IoT environments are facing communication challenges because of their mobility, and limited resources (capacities in computing, storage and energy). The use of Delay Tolerant Network (DTN) as basis for communication in IoT is promising but needs more development. In this paper, we present a preliminary scheme that enables Delay tolerance for IoT environments. With respect to IoT constraints, the new solution based on reinforcement learning allows to continuously enhance the proposed model to increase the delivery ratio while optimizing resources consumption.}, booktitle = {Proceedings of the 9th {International} {Conference} on the {Internet} of {Things}}, publisher = {ACM}, author = {Benhamida, Fatima Z and Casado-Mansilla, Diego and L\xf3pez de Ipi\xf1a, Diego}, year = {2019}, pages = {1--4} }']

[u' @inproceedings{irizar-arrieta_fox:_2019, title = {{FOX}: {A} {Flexible} and {Heterogeneus} {Mixed} {User} {Model} to {Address} {Sustainable} {Behaviour} in {Smart} {Environments}}, volume = {31}, shorttitle = {{FOX}}, url = {https://www.mdpi.com/2504-3900/31/1/82}, doi = {10.3390/proceedings2019031082}, abstract = {Addressing how human behaviour can be taken into account when designing for sustainability is an emerging topic in the development of pro-environmental person-centred smart systems. Indeed, user diversity and categorisation in the context of sustainable behaviour was already studied by some scholars in recent literature. However, the complexity of the individual present some open challenges that still have to be further investigated. In this work, behavioural theories and user characterisation are analysed together to better understand the human factors when trying to in\ufb02uence sustainable lifestyles and actions. Then, theoretical frameworks are combined and mapped in a novel user meta-model, coined FOX, that classi\ufb01es the individual dynamically taking into account its heterogeneity and diversity. The dimensions involved in the FOX proposal are explained by describing the categorisation of each dimension. Besides, an example of the potential application of the model is exposed to better contextualise the work presented. Finally, controversial aspects and emerging ideas of the proposal are equally discussed throughout the paper as well as we discuss the use of FOX model to inform the design of behaviour change interventions related to sustainability.}, language = {en}, urldate = {2020-01-14}, booktitle = {Proceedings}, author = {Irizar-Arrieta, Ane and Retegi, Aiur and Casado-Mansilla, Diego and Laschke, Matthias and L\xf3pez-de-Ipi\xf1a, Diego}, month = nov, year = {2019}, pages = {82} }']

[u' @inproceedings{casado-mansilla_design-insights_2018, address = {Bilbao, Spain}, title = {Design-insights for {Devising} {Persuasive} {IoT} {Devices} for {Sustainability} in the {Workplace}}, isbn = {978-1-5386-6451-3}, doi = {10.1109/GIOTS.2018.8534578}, abstract = {Sustainable HCI scholars have shown a growing interest in augmenting with technology everyday devices for promoting energy conservation behaviors in different contexts of use. The workspace has not been sufficiently explored as space where everyday appliances and work equipment might be converted into persuasive devices which raise eco-awareness. In this paper, we present the design of persuasive IoT devices that help to promote energy-efficient behaviour change in the workplace. This approach issued by applying Grounded Theory analysis over qualitative data collected at ten focus groups sessions after running a one year study where participants were treated to different persuasive strategies. With these data, five design categories emerged to be taken into account in the conception phase when devising tangible objects that aim to form pro-environmental behaviour change at workplaces. Our design-insights are also derived from an evaluation of the literature on ambient devices that encourage energy-efficient practices.}, booktitle = {2018 {Global} {Internet} of {Things} {Summit} ({GIoTS})}, publisher = {IEEE}, author = {Casado-Mansilla, Diego and Irizar-Arrieta, Ane and Garaizar, Pablo and Lopez de Ipi\xf1a, Di}, year = {2018} }']

[u' @article{gomez-carmona_multifunctional_2018, title = {Multifunctional {Interactive} {Furniture} for {Smart} {Cities}}, volume = {2}, issn = {2504-3900}, url = {http://www.mdpi.com/2504-3900/2/19/1212}, doi = {10.3390/proceedings2191212}, abstract = {The adaptation of cities to a future in which connectivity is at the service of the citizens will be a reality by creating interaction spaces and augmented urban areas. The research on this \ufb01eld falls within the scope of Smart Cities (SC) with the advantages that the common public spaces provide as new points for information exchange between the city, the urban furniture and their citizens. Kiosk systems have been recognized as an appropriate mean for providing event-aware and localized information to the right audience at the right time. Hence, in this article, we provide a vision of an eco-system of multifunctional urban furniture, where kiosks are part of them, designed not only for digital interaction but for sustainable use and symbolic integration into the urban environment as well. The proposed approach is conceived to drive services through digital urban nodes that facilitate tailored citizen-city communication and interaction. The central element of the designed platform consists on an intelligent digital kiosk which features a series of hardware and software components for sensing different environmental conditions, multimodal interaction with users and for conveying the captured data to the Cloud. The custom-based contents visualized to the users are controlled remotely through a management tool that allows to set-up and con\ufb01gure the digital kiosk. This system is not presented as an ad-hoc solution for one speci\ufb01c purpose but instead, it becomes a platform that can accommodate and solve the needs of every kind of user that populates urban shared-use spaces.}, language = {en}, number = {19}, urldate = {2019-04-09TZ}, journal = {Proceedings}, author = {G\xf3mez-Carmona, Oihane and Casado-Mansilla, Diego and L\xf3pez-de-Ipi\xf1a, Diego}, month = nov, year = {2018}, pages = {1212} }']

[u" @inproceedings{gomez-carmona_towards_2018, address = {New York, NY, USA}, title = {Towards {Healthy} {Office} {Environments}: {A} worker-centric {Internet} of {Things} {Approach}}, isbn = {978-1-63190-163-8}, doi = {10.4108/eai.20-4-2018.2276414}, abstract = {Health promotion in the workplace is one of the main challenges that the World Health Organization (WHO) has set in its agenda for the 21st century. Motivated by this concern, many companies have reacted launching awareness campaigns and wellness promotion programs that often encounter lack of adherence or follow-up by the target audience. Information and Communication Technologies (ICT) and the emerging paradigm of the Internet of Things (IoT) can play a mediating role between the campaign's proposers and the employees to increase their motivation to stick and prevent early dropouts. Hence, this PhD work presents a participatory worker-centric concept for enhancing individuals' wellbeing in office environments. The approach seeks to stress the importance of empowering workers to control their own wellbeing and self-care, turning work environments into succeeding confident settings to persuade and motivate end-users to attain health related changes in the mid and long-term.}, booktitle = {Proceedings of the 12th {EAI} {International} {Conference} on {Pervasive} {Computing} {Technologies} for {Healthcare} \u2013 {Demos}, {Posters}, {Doctoral} {Colloquium}}, author = {G\xf3mez-Carmona, Oihane and Casado-Mansilla, Diego and Garc\xeda-Zubia, Javier}, month = may, year = {2018}, keywords = {Intelligent Environments, Internet of Things, Participatory Sensing, Wellness Promotion, workplace} }"]

[u" @inproceedings{iglesias-urkia_enhanced_2018, address = {Santa Barbara, California, USA}, title = {Enhanced publish/subscribe in {CoAP}: describing advanced subscription mechanisms for the observe extension}, isbn = {978-1-4503-6564-2}, doi = {10.1145/3277593.3277594}, abstract = {In the current Internet of Things (IoT) all sorts of devices and objects with diverse capabilities are being connected to the Internet and the Web. Consequently, new lightweight network protocols are also being developed to connect resource-constrained devices or networks with each other. One of these protocols is the Constrained Application Protocol, which provides a REST architecture to resource and network-constrained devices. Besides the RESTful client-server paradigm, CoAP supports a publish-subscribe model thanks to its Observe extension which mimics some of MQTT's functionalities. However, this extension has some limitations in the subscription mechanism. Hence, this paper proposes several enhancements that define new CoAP options and response codes for such mechanisms. Furthermore, a theoretical comparison of the current CoAP capabilities against the new possibilities is also provided. For that, an specific use case is proposed, and a comparison in terms of the overhead required to exchange payloads and to subscribe to state change notifications on resources.}, booktitle = {{IOT} '18 {Proceedings} of the 8th {International} {Conference} on the {Internet} of {Things}}, publisher = {ACM}, author = {Iglesias-Urkia, Markel and Casado-Mansilla, Diego and Mayer, Simon and Urbieta, Aitor}, year = {2018} }"]

[u' @article{casado-mansilla_human-centric_2018, series = {{IEEE}}, title = {A {Human}-centric \\& {Context}-aware {IoT} {Framework} for {Enhancing} {Energy} {Efficiency} in {Buildings} of {Public} {Use}}, volume = {6}, copyright = {Open Access}, issn = {2169-3536}, url = {https://ieeexplore.ieee.org/document/8360090/}, doi = {10.1109/ACCESS.2018.2837141}, abstract = {The GreenSoul project introduces an innovative energy-efficient platform which enhances traditional public-use buildings with various technologies, such as smart adaptors, energy analyzers, an occupant aware decision support engine, mobile applications and interactive ambient interfaces. These enhancement aims to directly improve the interactions between occupants and energy-consuming assets in their environment. The GreenSoul framework is further enriched by the deployment of lightweight edge-computing GreenSoul-ed devices, which reduce energy consumption by cooperating with other devices, smart metering equipment and, very importantly, with eco-aware users. The decision making process is supported by a socio-economic behavioural model, which provides the necessary understanding of occupant indoor behaviour towards transforming energy consuming devices into active pro-sustainability agents that inform users how energy-efficiently they operate them, provide notifications as to improve that aspect, and even adapt their own functioning to reduce energy waste. These eco-wise devices, which are coined as GreenSoul-ed Things, are explained in detail throughout the presented work as well as the sensor-based architecture that supports their operation. The deployment of the framework across six pilot buildings is addressed, as well as the designed experimental setting to corroborate the potential of such a collaborative approach to enhance energy efficiency in office buildings.}, language = {English}, number = {1}, journal = {IEEE Access}, author = {Casado-Mansilla, Diego and Moschos, Ioannis and Kamara-Esteban, Oihane and C. Tsolakis, Apostolos and Borges, Cruz E. and Krinidis, Stelios and Irizar-Arrieta, Ane and Kitsikoudis, Konstantinos and Pijoan, Ander and Tzovaras, Dimitrios and L\xf3pez-de-Ipi\xf1a, Diego}, month = may, year = {2018}, keywords = {Computer architecture, Decision Support Systems, Energy-efficiency, Green Buildings, Internet of Things, Persuasive Technology, Q1, jcr3.244}, pages = {31444--31456} }']

[u' @inproceedings{irizar-arrieta_accounting_2018, address = {Split (Croatia)}, title = {Accounting for {User} {Diversity} in the {Design} for {Sustainable} {Behaviour} in {Smart} {Offices}}, isbn = {978-953-290-081-1}, abstract = {Human factors are essential in the promotion and success of energy efficiency initiatives in the workplace. The existing literature on the field has demonstrated that \u2018one-size-fitsall\u2019 solutions tend to fail because they overlook addressing user diversity and the different motivations to behave proenvironmentally. Thus, accounting for user heterogeneity appears to be a successful approach to improve the accuracy selecting and developing behaviour change strategies for different user profiles and work-contexts. This paper addresses the ideation and design process of an Internet of Things (IoT)-based physical object, a coaster, to foster energy awareness in an office-based workplace. Putting the diversity of users in the centre of the process, the Iotdesign proposal links persuasive principles with user profiles in order to give personalised eco-feedback for each different user type. Insights on the inclusion of user diversity on the Design for Sustainable Behaviour (DfSB) theories are provided after conducting qualitative research to evaluate the relationship between users and the designed interactive coaster.}, author = {Irizar-Arrieta, Ane and Casado-Mansilla, Diego and Retegi, Aiur}, year = {2018}, keywords = {Internet of Things, Persuasive Technology, Sustainable behaviour change, Tangible Interfaces, User diversity} }']

[u' @article{iglesias-urkia_analysis_2018, series = {Springer {Berlin} {Heidelberg}}, title = {Analysis of {CoAP} implementations for industrial {Internet} of {Things}: a survey}, doi = {10.1007/s12652-018-0729-z}, abstract = {Over the last few years, the Internet of Things (IoT) has grown in protocols, implementations and use cases. In terms of communication protocols, the Constrained Application Protocol (CoAP) prevails among the rest, such as MQ Telemetry Transport (MQTT) or Advanced Message Queuing Protocol (AMQP). This protocol is lightweight and capable of running in resource constrained devices and networks and can be securized using Datagram Transport Layer Security (DTLS). Hav-ing a secure channel of communication is important in IoT environments, since IoT devices affect the physical world and exchange personal private data. There exist many implementations of CoAP, each of these with its own particular features and requirements. Therefore, it is important to choose the CoAP implementation that suits better to the specific requirements of each application. This paper presents a feature and empirical comparison of several open source CoAP implementations and also analyzes the security libraries they use. First of all, it surveys current CoAP implementations, and compares them in terms of built-in core, extensions, target platform, programming language and interoperability. Then, a theoretical analysis of the security libraries is provided. Finally, it analyzes CoAP libraries\u2019 performance in terms of latency, memory and CPU consumption in a real testbed deployed in an industrial scenario, in order to help in adopting a decision criterion for similar deployments}, journal = {Journal of Ambient Intelligence and Humanized Computing}, author = {Iglesias-Urkia, Markel and Orive, Adri\xe1n and Urbieta, Aitor and Casado-Mansilla, Diego}, month = feb, year = {2018}, keywords = {CoAP, IoT, JCR1.91, Q3, Security, energy, jcr1.588}, pages = {1--4} }']

[u" @inproceedings{iglesias-urkia_validation_2018, address = {Turin, Italy}, title = {Validation of a {CoAP} to {IEC} 61850 {Mapping} and {Benchmarking} vs {HTTP}-{REST} and {WS}-{SOAP}}, isbn = {978-1-5386-7108-5}, doi = {10.1109/ETFA.2018.8502624}, abstract = {With the advent of Smart Grid systems, the digitalization of electrical grid infrastructures aims to improve energy saving and efficiency. The International Electrotechnical Commission (IEC) is one of the organizations that create and manage norms and standards in areas related to electricity and electronics, such as IEC 61850. In recent years, the research community have proposed mappings of different communication protocols to IEC 61850. However, most of the proposals focused on heavyweight interaction paradigms and protocols such as Common Object Request Broker Architecture (CORBA), Data Distribution Service (DDS), HTTP-REST or Web Services. With the proliferation of the Internet of Things (IoT), new lightweight protocols are appearing opening new perspectives to the standard. Hence, this paper firstly presents a validation of a mapping of the IEC 61850 standard to the Constrained Application Protocol (CoAP) and then compares its performance implementing the IEC's mapping against HTTP-REST and Web Services/SOAP. For comparison purposes, the communication latency, the number of total bytes sent, and the size of the overhead are presented for each of the three approaches. To conclude, future perspectives on the suitability of lightweight protocols to the IEC 61850 are provided.}, booktitle = {2018 {IEEE} 23rd {International} {Conference} on {Emerging} {Technologies} and {Factory} {Automation} ({ETFA})}, publisher = {IEEE}, author = {Iglesias-Urkia, Markel and Casado-Mansilla, Diego and Mayer, Simon and Urbieta, Aitor}, year = {2018} }"]

[u" @inproceedings{gomez-carmona_health_2018, address = {Rome, Italy}, title = {Health {Promotion} in {Office} {Environments}: {A} {Worker}-centric {Approach} {Driven} by the {Internet} of {Things}}, volume = {23}, isbn = {978-1-61499-873-0 (print) {\\textbar} 978-1-61499-874-7 (online)}, doi = {10.3233/978-1-61499-874-7-355}, abstract = {Health promotion in the workplace is one of the main challenges that the World Health Organization (WHO) has set in its agenda for the 21\\${\\textasciicircum}\\{st\\}\\$ century. Motivated by this concern, many companies across the world have reacted launching awareness campaigns and wellness promotion programs. One of the recurring problems on different application scenarios is the lack of adherence of the target audience (i.e. disengagement, early drop-out or high attrition rates). In this context, the potential of the Information and Communication Technologies (ICT) and the emerging paradigm of the Internet of Things (IoT) can play a mediating role between the proposers (i.e. managers) and the target audience (i.e employees) to increase motivation and follow-up. The presented work reviews the main challenges of IoT-based interventions for workplace health promotion and presents a participatory worker-centric concept for enhancing individuals' well-being in office environments. Our approach seeks to stress the importance of empowering workers providing to them fine-grained control of their own well-being and self-care. To this aim, we propose turning work environments into ideal confident-settings to persuade and motivate end-users attaining substantial changes that will persist over time.}, booktitle = {Intelligent {Environments} 2018: {Workshop} {Proceedings} of the 14th {International} {Conference} on {Intelligent} {Environments}}, author = {G\xf3mez-Carmona, Oihane and Casado-Mansilla, Diego and Garc\xeda-Zub\xeda, Javier}, month = jun, year = {2018}, keywords = {Intelligent Environments, Internet of Things, Participatory Sensing, Wellness Promotion, workplace}, pages = {355 -- 363} }"]

[u' @article{irizar-arrieta_evaluation_2018, title = {{EVALUATION} {OF} {A} {DIGITAL} {INTERFACE} {THAT} {INTEGRATES} {USER} {DIVERSITY} {TO} {AWARE} {INDIVIDUALS} {ABOUT} {ENERGY}}, volume = {13}, issn = {1646-3692}, abstract = {Human factors play a key role on the improvement of energy efficiency at the workplace. Hence, they should be taken into account. Literature on Human-Computer Interaction (HCI) has demonstrated that \u2018one-size-fits-all\u2019 solutions fail addressing the user diversity in office environments. Therefore, this paper exposes how User Centered Design (UCD) and User Experience (UX) can act as pivotal tools to enhance user engagement in digital interfaces that promote sustainable behaviour at work. To accomplish this goal, a digital interface that offers a range of strategies and functions directed to different user archetypes has been designed and evaluated both quantitatively and qualitatively. Analysed data revealed the importance of the UX to design positive interactions which is a predictor of future system usage and engagement. The diversity of users and the impact of UCD on the Design for Sustainable Behaviour are discussed. Besides, future iterations of the design of a digital system that adapts dynamically to user profiles are proposed.}, number = {1}, journal = {IADIS International Journal on Computer Science and Information Systems}, author = {Irizar-Arrieta, Ane and Casado-Mansilla, Diego and Retegi, Aiur}, month = aug, year = {2018}, keywords = {Design for Sustainable Behaviour, Interaction Design, Interface Design, Sustainability, User Centered Design, User Experience}, pages = {110--124} }']

[u' @inproceedings{frantz_schneider_towards_2018, address = {Toronto, ON, Canada}, series = {{EPiC} {Series} in {Computing}}, title = {Towards a sustainable business model for smartphones: {Combining} product-service systems with modularity}, volume = {52}, url = {https://easychair.org/publications/paper/6cCL}, doi = {https://doi.org/10.29007/djcz}, abstract = {Based on the Sustainable Development Goals introduced by the United Nations and on the circular economy concept, ICT providers are adapting to become more sustainable. Some assess the CO2 emissions in the whole life cycle, while others propose to use renewable energies during manufacturing and assembling. In contrast with the current smartphone business models that rely on ongoing patterns of production and consumption, this paper proposes a more sustainable approach by combining product modularity, Product-Service Systems (PSS), and design for attachment. With a modular design, it becomes easier to repair the product or to replace parts, allowing for an extended lifespan. In combination with PSS, we propose that the modules, when no longer used by one customer, return to the market to be reused by another one. Lastly, we discuss the impact of the users\u2019 behaviour through emotional bond, personalization, and technology appropriation as predictors of attachment to the product and consequently an extended lifespan. Through comparing case studies and using Life Cycle Assessment to calculate the CO2 equivalent emissions, we argue that our approach would directly reduce the environmental impact of the smartphone on the production phase, which accounts for most of the emissions throughout its life cycle.}, booktitle = {5th {International} {Conference} on {Information} and {Communication} {Technology} for {Sustainability}}, publisher = {Easychair}, author = {Frantz Schneider, Alice and Matinfar, Sepideh and Grua, Eoin M. and Casado-Mansilla, Diego and Cordewener, Lars}, month = oct, year = {2018}, pages = {82--99} }']

[u' @inproceedings{gomez-carmona_smiwork:_2017, address = {Split}, title = {{SmiWork}: {An} {Interactive} {Smart} {Mirror} {Platform} for {Workplace} {Health} {Promotion}}, abstract = {This paper presents the design and implementation of a multi-user smart mirror system conceived to promote wellness and healthier lifestyles in the work environment through persuasive strategies. By means of a RFID reader, the interactive mirror recognises different users through their personal corporate ID card, which allows them to have access to their personalised user-interface. The smart mirror provides workplace\u2019s indoor environmental conditions (thermal, humidity and light), personal physical exercise data obtained from wearable devices and general purpose information (e.g. weather and daily news). Additionally, motivational advice related to physical performance is supplied through request by applying speech-based recognition techniques. End-users can also inquire the mirror about their ranking position in a fair-daily competition that gives social recognition to the most-active-user. The implemented mirror has been evaluated in a one-week study conducted in the wild in the workplace premises. The quantitative data gathered throughout the study, as well as the qualitative users\u2019 feedback obtained in a post-trial focus group, provided promising findings for the acceptance and convenience of such a persuasive device in the work environment. Furthermore, valuable design-insights were obtained for future iterations of the smart mirror that encourages workers towards healthier lifestyles.}, booktitle = {2nd {International} {Multidisciplinary} {Conference} on {Computer} and {Energy} {Science}}, author = {G\xf3mez-Carmona, Oihane and Casado-Mansilla, Diego}, month = jul, year = {2017}, keywords = {E-Health, Intelligent Environments, Internet of Things, Smart Everyday Objects, Wellness Promotion, smiwork-an-interactive-smart-mirror-platform-for-workplace-health-promotion} }']

[u' @inproceedings{irizar-arrieta_coping_2017, address = {Lisbon (Portugal)}, title = {Coping with user diversity: {UX} informs the design of a digital interface that encourages sustainable behaviour}, abstract = {Human factors play a key role on the improvement of energy efficiency at the workplace. However, to mitigate this recurrent issue most of the approaches rely on \u2018one-size-fits-all\u2019 solutions which the literature on HCI evidenced that ails addressing the user diversity in office environments. Therefore, this paper emphasises on the relevance of boosting the User Centered Design (UCD) and enriching the User Experience (UX) as pivotal means to enhance the user engagement on digital interfaces that promote sustainable behaviour at work. To accomplish this goal, a digital interface that offers a range of strategies and functions directed to the different user archetypes (user diversity) has been designed and evaluated quantitatively and qualitatively. The analysed data shed light on the relevance of enhance the UX to design positive interactions which is a predictor of future system usage and engagement. The diversity of users and the impact of the UCD on the Design for Sustainable Behaviour are discussed throughout the paper. Besides, we propose future lines of work on designing digital systems able to adapt dynamically to user profiles during its usage.}, booktitle = {11th {Multi} {Conference} on {Computer} {Science} and {Information} {Systems} 2017}, author = {Irizar-Arrieta, Ane and Casado-Mansilla, Diego}, month = jul, year = {2017}, keywords = {Design for Sustainable Behaviour, Interaction Design, Interface Design, Sustainability, User Centered Design,, User Experience} }']

[u' @inproceedings{casado-mansilla_greensoul:_2017, address = {Pennsylvania, USA}, title = {{GreenSoul}: {An} {IoT} platform for empowering users\u2019 energy efficiency in public buildings}, isbn = {978-3-319-67584-8 978-3-319-67585-5}, shorttitle = {Ucami2017}, abstract = {The GreenSoul (GS) framework aims to provide a low-cost energy-efficient Information and Communications Technology (ICT) platform which seamlessly augments a traditional public-use building with a set of assets (apps, interactive interfaces, device adaptors, smart meters and a Decision Support Engine), which mediate in the interactions of users with their environments and the energy consuming devices or systems present in them. GreenSoul envisions public use buildings as ecosystems of GreenSoul-ed devices which cooperate with other devices, standard Smart Meters and, very importantly, with eco-educated and eco-aware users to minimize the unnecessary energy consumption. GS architecture is supported by a socio-economic behavioural model, which aids on behaviour understanding to turn energy consuming devices into active pro-sustainability agents that manifest to their surrounding users how well or badly they are being manipulated (energy-wise), offer tips about how to use them more efficiently and even adapt their own functioning to avoid energy waste.}, publisher = {LNCS}, author = {Casado-Mansilla, Diego and Mochos, I. and Kamara-Esteban, Oihane and Tsolakis, A. and Borges, Cruz E. and Krinidis, Stelios and L\xf3pez-De-Ipi\xf1a, Diego and Tzovaras, D.}, month = jul, year = {2017}, keywords = {Forecasting, GreenSoul, H2020, Persuasive Technology, architecture, energy efficiency}, pages = {703--714} }']

[u' @inproceedings{iglesias-urkia_iec_2017, address = {Linz, Austria}, title = {{IEC} 61850 meets {CoAP}: {Towards} the integration of {Smart} {Grids} and {IoT} standards}, url = {https://dl.acm.org/citation.cfm?id=3131545}, doi = {10.1145/3131542.3131545}, abstract = {Smart Grids are one of the main consequences of the digitalization of electrical grid infrastructures that aim to improve energy saving and efficiency. Within Smart Grids, different devices and electrical substations communicate with each other and need to be accessible from the outside. Thus, the need of embracing standards, such as those of International Electrotechnical Commission\u2019s (IEC), is pivotal. IEC 61850 is a standard that covers such a need, and different communication protocols have been proposed to fulfill the features that the standard proposes. Most proposals focus on heavyweight protocols. However, the growth of the Internet of Things (IoT) demands resource-constrained devices to also participate in IoT networks. In this regard, new protocols have been designed and developed, such as the Constrained Application Protocol (CoAP). The work presented in this paper adopts CoAP to provide a full mapping of the functionalities specified in IEC 61850 for electrical substations. Furthermore, an analytical and critical review of the already proposed mapping approaches is provided. Future lines of research towards accelerating the adoption of IoT and Web of Things standards in Smart Grid scenarios are also provided.}, language = {English}, publisher = {ACM New York, NY, USA}, author = {Iglesias-Urkia, Markel and Urbieta, Aitor and Parra, Jorge and Casado-Mansilla, Diego}, month = oct, year = {2017}, keywords = {CoAP, IEC 61850, IoT, Mapping, Smart grids, Web of Things, energy} }']

[u' @inproceedings{apostolou_g_greensoul_2016, title = {{GreenSoul}\u2217 a novel platform for the reduction of energy consumption in communal and shared spaces}, isbn = {978-1-5090-0749-3}, url = {http://ieeexplore.ieee.org/abstract/document/7748783/?reload=true}, doi = {10.1109/EFEA.2016.7748783}, abstract = {In order to achieve higher energy efficiency in buildings, it is essential that devices be consciously used. The GreenSoul project aims to build energy awareness to users and help them change their energy consumption behavior. This will be succeeded by changing the way people use energy consuming devices and by embedding intelligence in the devices themselves, which could autonomously decide about their operation mode and energy consumption. GreenSoul research and innovation focus on the reduction of the energy consumption above 20\\%, within the domain of public buildings or buildings of public use. GreenSoul forecasts that it is possible to surpass this target providing that a true collaboration among people, devices and buildings is achieved by putting in place the range of technological contributions set forward by this project.}, publisher = {IEEE}, author = {{Apostolou, G} and {Krinidis, S} and {Ioannidis, D} and {Tzovaras, D} and {Borges, CE} and Casado-Mansilla, Diego and L\xf3pez-de-Ipi\xf1a, Diego}, month = sep, year = {2016}, note = {00000}, keywords = {Eco-aware Everyday Things, Energy-efficiency, Forecasting, GreenSoul, Persuasive Technology} }']

[u" @inproceedings{casado-mansilla_close_2015, address = {Seoul, Republic of Korea}, title = {'{Close} the {Loop}': {An} {iBeacon} {App} to {Foster} {Recycling} {Through} {Just}-in-{Time} {Feedback}}, isbn = {978-1-4503-3146-3}, shorttitle = {'{Close} the {Loop}'}, url = {http://dl.acm.org/citation.cfm?doid=2702613.2732861}, doi = {10.1145/2702613.2732861}, abstract = {Contemporary micro-location technologies such as Bluetooth Low Energy (BLE) show promise in enabling new experiences when interacting with physical spaces. An emerging BLE technology is iBeacons, with the retail sector pioneering their use to enhance shopping experiences. There is scope for the HCI sustainability community to explore the use of iBeacons to raise awareness around sustainability issues, particularly in public and communal spaces. This work presents embryonic research exploring the design of a prototype iBeacon-based sustainability application called 'Close-the-Loop'. The application builds on previous sustainability and just-in-time feedback research to encourage end-users to engage in recycling behaviours in a large university canteen space. Findings from a focus group and short ethnographic study provide design insights to further develop the prototype to increase engagement with appropriate recycling practices.}, language = {en}, urldate = {2015-04-23TZ}, publisher = {ACM Press}, author = {Casado-Mansilla, Diego and Foster, Derek and Lawson, Shaun and Garaizar, Pablo and L\xf3pez-de-Ipi\xf1a, Diego}, year = {2015}, note = {00000}, keywords = {Behaviour change, Just-in-time feedback, Micro-location technologies, Nudging, Recycling, Sustainability, iBeacons}, pages = {1495--1500} }"]

[u" @article{casado-mansilla_embedding_2015, title = {Embedding {Intelligent} {Eco}-aware {Systems} within {Everyday} {Things} to {Increase} {People}\u2019s {Energy} {Awareness}}, volume = {20}, issn = {1432-7643}, doi = {10.1007/s00500-015-1751-0}, abstract = {There is a lack of energy consumption awareness in working spaces. People in their workplaces do not receive energy consumption feedback nor do they pay a monthly invoice to electricity providers. In order to enhance workers' energy awareness, we have transformed everyday shared electrical appliances which are placed in common spaces (e.g. beamer projectors, coffee-makers, printers, screens, portable fans, kettles, and so on.) into persuasive eco-aware everyday things. The proposed approach lets these appliances report their usage patterns to a Cloud-server where the data is transformed into time-series and then processed to obtain the appliances' next-week usage forecast. Autoregressive Integrated Moving Average (ARIMA) model has been selected as the potentially most accurate method for processing such usage predictions when compared with the performance exhibited by three different configurations of Artificial Neural Networks (ANNs). Our major contribution is the application of soft computing techniques to the field of sustainable persuasive technologies. Thus, consumption predictions are used to trigger timely persuasive interactions to help devices users to operate the appliances as efficiently, energy-wise, as possible. Qualitative and quantitative results were gathered in a between-three-groups study related with the use of shared electrical coffee-makers at workplace. The goal of these studies was to assess the effectiveness of the proposed eco-aware design in a workplace environment in terms of energy saving and the degree of affiliation between people and the smart appliances to create a green-team relationship.}, language = {English}, number = {5}, journal = {Soft Computing Journal. Springer Berlin Heidelberg}, author = {Casado-Mansilla, Diego and {L\xf3pez-de-Armentia, Juan} and {Ventura, Daniela} and {Garaizar, Pablo} and {L\xf3pez-de-Ipi\xf1a, Diego}}, month = jun, year = {2015}, keywords = {ANN, ARIMA Models, Eco-aware Everyday Things, Persuasive Technology, Q2, Soft Computing, eco-awareness, eco-feedback, energy efficiency, hci, jcr1.630, linked-data-social-coffee-maker}, pages = {1695--1711} }"]

[u' @article{lopez-de-armentia_reducing_2014, title = {Reducing energy waste through eco-aware everyday things}, volume = {10}, issn = {1574-017x}, url = {http://www.hindawi.com/journals/misy/2014/956135/abs/}, doi = {10.3233/MIS-130172}, abstract = {Society wastes much more energy than it should. This produces tons of unnecessary CO\\_2 emissions. This is partly due to the inadequate use of electrical devices given the intangible and invisible nature of energy. This misuse of devices and energy unawareness is particularly relevant in public spaces (offices, schools, hospitals and so on), where people use electrical appliances, but they do not directly pay the invoice to energy providers. Embedding intelligence within public, shared appliances, transforming them into Eco-aware things, is valuable to reduce a proportion of the unnecessarily consumed energy. To this end, we present a twofold approach for better energy efficiency in public spaces: 1) informing persuasively to concerned users about the misuse of electronic appliances; 2) Customizing the operating mode of this everyday electrical appliances as a function of their real usage pattern. To back this approach, a capsule-based coffee machine placed in a research laboratory has been augmented. This device is able to continuously collect its usage pattern to offer feedback to coffee consumers about the energy wasting and also, to intelligently adapt its operation to reduce wasted energy. To this aim, several machine learning approaches are compared and evaluated to forecast the next-day device usage.}, number = {1}, journal = {Mobile Information Systems. IOS Press}, author = {L\xf3pez-de-Armentia, Juan and Casado-Mansilla, Diego and L\xf3pez-P\xe9rez, Sergio and L\xf3pez-De-Ipi\xf1a, Diego}, month = jan, year = {2014}, keywords = {Coffee Machines, Eco-aware Everyday Things, Energy-efficiency, JCR1.789, Predictive Models, Q1, Smart Everyday Objects, Sustainability, eco-awareness, linked-data-social-coffee-maker, social devices}, pages = {79--103} }']

[u' @article{lopez-de-armentia_making_2014, title = {Making social networks a means to save energy}, issn = {1084-8045}, shorttitle = {{JNCA}}, url = {http://www.sciencedirect.com/science/article/pii/S1084804514002276}, doi = {10.1016/j.jnca.2014.09.020}, abstract = {Energy consumption in the world has increased significantly in the last few decades, becoming an important issue nowadays. The eco-aware everyday things were devised to prevent the waste of energy resources in common areas where people often elude their responsibility about the energy consumption when using appliances of collective use, like printers, coffee makers, beamers and so on. These eco-appliances are able to improve their energy efficiency dynamically adapting their operation according to their usage patterns. This work proposes a further step, also aligned with devices\u05f3 automation, where everyday consumer devices are transformed into collaborative eco-aware everyday things. Taking advantage of the evolution of the Internet towards the Internet of Things and the Web as a universal communication mechanism both among humans-to-things and things-to-things, it is proposed to use Twitter as a communication channel for eco-aware appliances to share their usage patterns. Thus, other newly deployed similar devices in comparable environments can alleviate the cold-start problem, which is common in scenarios where usage learning is needed. To assess the effectiveness of this approach, a collaboration between three of these eco-aware devices has been simulated, giving place, encouragingly, to a higher energy reduction efficiency when compared with non-collaborative objects.}, urldate = {2015-01-07TZ}, journal = {Journal of Network and Computer Applications}, author = {L\xf3pez-de-Armentia, Juan and Casado-Mansilla, Diego and L\xf3pez-de-Ipi\xf1a, Diego}, month = oct, year = {2014}, note = {00000}, keywords = {Coffee machines, Collaborative eco-aware everyday things, Eco-aware everyday things, JCR1.772, Predictive models, Q1, Smart Everyday Objects, energy-efficiency, linked-data-social-coffee-maker, social devices} }']

[u' @inproceedings{casado-mansilla_switch_2014, address = {Toronto, ON, Canada}, title = {To switch off the coffee-maker or not: that is the question to be energy-efficient at work}, copyright = {Copyright is held by the author/owner(s).}, isbn = {978-1-4503-2474-8}, shorttitle = {To switch off the coffee-maker or not}, url = {http://dl.acm.org/citation.cfm?doid=2559206.2581152}, doi = {10.1145/2559206.2581152}, abstract = {There are some barriers to reduce energy consumption in shared spaces where many people use common electronic devices (e.g. dilution of responsibility, the trade-off between comfort and necessity, absentmindedness, or the lack of support to foster energy-efficiency). The workplace is a challenging scenario since the economic incentives are not present to increase energy awareness. To tackle some of these issues we have augmented a shared coffee-maker with eco-feedback to turn it into a green ally of the workers. Its design rationale is twofold: Firstly, to make the coffee-maker able to learn its own usage pattern. Secondly, to communicate persuasively and in real-time to users whether it is more efficient to leave the appliance on or off during certain periods of time along the workday. The goal is to explore a human-machine team towards energy efficiency and awareness, i.e. whether giving the initiative to users to decide how to operate the common appliances, but being assisted by them, is a better choice than automation or mere informative eco-feedback.}, language = {en}, urldate = {2014-05-08TZ}, booktitle = {Extended {Abstracts} on {Human} {Factors} in {Computing} {Systems} ({CHI} 2014)}, publisher = {ACM New York, NY, USA \xa92014}, author = {Casado-Mansilla, Diego and Lopez-de-Armentia, Juan and Garaizar, Pablo and L\xf3pez-de-Ipi\xf1a, Diego}, year = {2014}, keywords = {Eco-aware Everyday Things, Energy-efficiency, Persuasive Technology, Sustainability, eco-feedback, linked-data-social-coffee-maker}, pages = {2425--2430} }']

[u' @incollection{hervas_ariima:_2014, address = {Cham}, title = {{ARIIMA}: {A} {Real} {IoT} {Implementation} of a {Machine}-{Learning} {Architecture} for {Reducing} {Energy} {Consumption}}, volume = {8867}, isbn = {978-3-319-13101-6 978-3-319-13102-3}, shorttitle = {{ARIIMA}}, url = {http://link.springer.com/10.1007/978-3-319-13102-3_72}, abstract = {As the inclusion of more devices and appliances within the IoT ecosystem increases, methodologies for lowering their energy consumption impact are appearing. On this field, we contribute with the implementation of a RESTful infrastructure that gives support to Internet-connected appliances to reduce their energy waste in an intelligent fashion. Our work is focused on coffee machines located in common spaces where people usually do not care on saving energy, e.g. the workplace. The proposed approach lets these kind of appliances report their usage patterns and to process their data in the Cloud through ARIMA predictive models. The aim such prediction is that the appliances get back their next-week usage forecast in order to operate autonomously as efficient as possible. The underlying distributed architecture design and implementation rationale is discussed in this paper, together with the strategy followed to get an accurate prediction matching with the real data retrieved by four coffee machines.}, urldate = {2015-04-23TZ}, booktitle = {Ubiquitous {Computing} and {Ambient} {Intelligence}. {Personalisation} and {User} {Adapted} {Services}}, publisher = {Springer International Publishing}, author = {Ventura, Daniela and Casado-Mansilla, Diego and L\xf3pez-de-Armentia, Juan and Garaizar, Pablo and L\xf3pez-de-Ipi\xf1a, Diego and Catania, Vincenzo}, editor = {Herv\xe1s, Ram\xf3n and Lee, Sungyoung and Nugent, Chris and Bravo, Jos\xe9}, year = {2014}, note = {00000}, keywords = {ARIMA Models, Eco-aware Everyday Things, Forecasting, Internet of Things, energy efficiency, linked-data-social-coffee-maker}, pages = {444--451} }']

[u' @inproceedings{casado-mansilla_team_2014, address = {Birmingham, UK}, title = {Team up with {Eco}-aware {Everyday} {Things} to {Green} your {Workplace}!}, isbn = {978-1-4799-4331-9}, doi = {10.1109/IMIS.2014.55}, abstract = {The lack of energy consumption awareness in public spaces is a fact. There, people do not receive energy consumption feedback nor do they pay a monthly invoice to electricity providers. Thus, there is practically a non-existent perception of energy waste; and hence, there is low motivation to reduce it. To tackle this problem we transform everyday shared electrical appliances which are placed in common spaces into collaborative eco-aware everyday things. These eco-appliances make people aware that they are not alone to save energy, but the everyday things can team up with them to achieve this task. Qualitative and quantitative results were gathered in three case studies performed with shared coffee machines at workplace. The objective was to assess the effectiveness of the proposed eco-aware design in terms of energy saving and the degree of affiliation between workers and the smart appliance to create a green-team relationship.}, booktitle = {Eighth {International} {Conference} on {Innovative} {Mobile} and {Internet} {Services} in {Ubiquitous} {Computing}}, publisher = {IEEE Xplore}, author = {Casado-Mansilla, Diego and {L\xf3pez-de-Armentia, Juan} and {Pablo Garaizar} and {L\xf3pez-de-Ipi\xf1a, Diego}}, year = {2014}, keywords = {Eco-aware Everyday Things, Energy-efficiency, Persuasive Technology, Sustainability, eco-awareness, eco-feedback, hci, linked-data-social-coffee-maker, social devices}, pages = {409--414} }']

[u' @inproceedings{lopez-de-armentia_saving_2013, address = {Taichung, Taiwan}, title = {Saving {Energy} through {Collaborative} {Eco}-aware {Everyday} {Things}}, isbn = {978-0-7695-4974-3}, url = {http://ieee.164288.com/xpl/articleDetails.jsp?reload=true&arnumber=6603721}, doi = {10.1109/IMIS.2013.88}, abstract = {The reduction of energy waste in any of its forms and everywhere is a major challenge of our society. An important proportion of such waste is due to the misuse of consumer appliances of shared use in public areas (computers, printers, coffee makers,...}, language = {English}, urldate = {2013-09-20TZ}, booktitle = {The {Seventh} {International} {Conference} on {Innovative} {Mobile} and {Internet} {Services} in {Ubiquitous} {Computing}}, publisher = {IEEE Xplore}, author = {L\xf3pez-de-Armentia, Juan and Casado-Mansilla, Diego and L\xf3pez-de-Ipi\xf1a, Diego}, month = jul, year = {2013}, keywords = {Coffee Machines, Eco-aware Everyday Things, Energy-efficiency, Predictive Models, Smart Everyday Objects, eco-awareness, linked-data-social-coffee-maker, smart, social devices}, pages = {489 -- 493} }']

[u" @inproceedings{klein_detection_2012, address = {Berlin, Heidelberg}, series = {{UCAmI}'12}, title = {Detection and extracting of emergency knowledge from twitter streams}, isbn = {978-3-642-35376-5}, url = {http://dx.doi.org/10.1007/978-3-642-35377-2_64}, doi = {10.1007/978-3-642-35377-2_64}, abstract = {Increasingly, more important information is being shared through Twitter. New opportunities arise to use this tool to detect emergencies and extract crucial information about the scope and nature of that event. A major challenge for the extraction of emergency event information from Twitter is represented by the unstructured and noisy nature of tweets. Within the SABESS project we propose a combined structural and content based analysis approach. We use social network analysis to identify reliable tweets and content analysis techniques to summarize key emergency facts.}, urldate = {2013-09-23TZ}, booktitle = {Proceedings of the 6th international conference on {Ubiquitous} {Computing} and {Ambient} {Intelligence}}, publisher = {Springer-Verlag}, author = {Klein, Bernhard and Laiseca, Xabier and Casado-Mansilla, Diego and L\xf3pez-de-Ipi\xf1a, Diego and Nespral, Alejandro Prada}, year = {2012}, keywords = {Twitter, emergency detection, natural language processing, sabess, social network analysis}, pages = {462--469} }"]

[u" @inproceedings{vega-barbas_smart_2012, address = {Washington, DC, USA}, series = {{IMIS} '12}, title = {Smart {Spaces} and {Smart} {Objects} {Interoperability} {Architecture} ({S}3OiA)}, isbn = {978-0-7695-4684-1}, url = {http://dx.doi.org/10.1109/IMIS.2012.99}, doi = {10.1109/IMIS.2012.99}, abstract = {The presented work aims to contribute towards the standardization and the interoperability off the Future Internet through an open and scalable architecture design. We present S3OiA as a syntactic/semantic Service-Oriented Architecture that allows the integration of any type of object or device, not mattering their nature, on the Internet of Things. Moreover, the architecture makes possible the use of underlying heterogeneous resources as a substrate for the automatic composition of complex applications through a semantic Triple Space paradigm. Created applications are dynamic and adaptive since they are able to evolve depending on the context where they are executed. The validation scenario of this architecture encompasses areas which are prone to involve human beings in order to promote personal autonomy, such as home-care automation environments and Ambient Assisted Living.}, urldate = {2013-09-23TZ}, booktitle = {Proceedings of the 2012 {Sixth} {International} {Conference} on {Innovative} {Mobile} and {Internet} {Services} in {Ubiquitous} {Computing}}, publisher = {IEEE Computer Society}, author = {Vega-Barbas, Mario and Casado-Mansilla, Diego and Valero, Miguel A. and Lopez-de-Ipina, Diego and Bravo, Jose and Florez, Francisco}, year = {2012}, keywords = {Ambient Assisted Living, Internet of Things, Interoperability, Smart Everyday Object, personal autonomy}, pages = {725--730} }"]

[u" @inproceedings{casado-mansilla_will_2012, address = {Berlin, Heidelberg}, series = {{UCAmI}'12}, title = {Will eco-aware objects help to save the world?}, isbn = {978-3-642-35376-5}, url = {http://dx.doi.org/10.1007/978-3-642-35377-2_3}, doi = {10.1007/978-3-642-35377-2_3}, abstract = {Our society waste more energy than they should. This is mostly due to the inadequate use that human beings perform on electrical devices. The presented paper aims to justify that embedding intelligence within everyday objects is valuable to reduce the portion of unnecessary consumed energy which is due to human misusing. To such extend, we have augmented a capsule-based coffee machine which is placed in a work office to back our assumptions. Using this device we have devised an energy saving model that takes into consideration features like how and when workers use the appliance along the day. Additionally, we have simulated the model to demonstrate, through error metric comparison (measured in {\\textless}Literal{\\textgreater}KWh{\\textless}/Literal{\\textgreater} ), that a big amount of energy would be reduced if such intelligent systems were applied when compared with a baseline approach. Therefore, this paper contributes with a set of early, but promising, findings regarding how smart eco-aware objects can help to save energy in areas where people inhabit (cities, buildings or homes).}, urldate = {2013-09-23TZ}, booktitle = {Proceedings of the 6th international conference on {Ubiquitous} {Computing} and {Ambient} {Intelligence}}, publisher = {Springer-Verlag}, author = {Casado-Mansilla, Diego and L\xf3pez-de-Armentia, Juan and L\xf3pez-de-Ipi\xf1a, Diego}, year = {2012}, note = {00001}, keywords = {eco-awareness, energy-efficiency, linked-data-social-coffee-maker, smart everyday objects}, pages = {17--24} }"]

[u" @inproceedings{lopez-de-armentia_fighting_2012, address = {Palermo, Italy}, title = {Fighting against {Vampire} {Appliances} through {Eco}-{Aware} {Things}}, isbn = {978-1-4673-1328-5}, url = {http://www.computer.org/csdl/proceedings/imis/2012/4684/00/4684a868-abs.html}, doi = {10.1109/IMIS.2012.112}, abstract = {This paper provides an overview of how Internet connected objects can lead to a social change towards energy efficiency in areas where people inhabit (cities, buildings or homes). For this aim it is proposed the use of social networks, like Twitter, as an interaction and communication channel between smart objects and human beings. The presented work demonstrates, by means of an experiment, how an augmented everyday object, i.e. a capsule-based coffee machine, may help to reduce the unnecessary consumed energy in electric appliances. The paper opens the discussion of the promising potential of combining people and future smart everyday objects teaming up to promote a more sustainable behaviour on the planet's behalf.}, booktitle = {The {Sixth} {International} {Conference} on {Innovative} {Mobile} and {Internet} {Services} in {Ubiquitous} {Computing}}, publisher = {IEEE Computer Society}, author = {L\xf3pez-de-Armentia, Juan and Casado-Mansilla, Diego and L\xf3pez-de-Ipi\xf1a, Diego}, year = {2012}, keywords = {arduino, eco-awareness, energy-efficiency, linked-data-social-coffee-maker, persuasive technology, smart everyday objects, social coffee, social devices, twitter}, pages = {868--873} }"]

[u' @inproceedings{desraches_forecasting_2018, address = {Madeira}, title = {Forecasting the usage of appliances of shared use: an analysis of simplicity over complexity}, isbn = {978-1-5386-8091-9}, doi = {10.1109/ES2DE.2018.8494230}, abstract = {The current revolution of the Internet of Things around the world goes far beyond the goal of simply interconnecting devices and retrieving data from them. New challenges are appearing in relation to the data-flow architectures where Cloud-based initiatives are declining over the Edge computing paradigm. In this latter approach, the resources (i.e. devices involved) are optimized by processing the data as close as possible to the source of them. However, constrained devices still struggle embedding the computation that servers carry out in the Cloud. The case of load and devices usage forecasting is a particular example of this issue where efforts are being made to simplify the processing and device architecture towards reducing energy consumption in data flow and computation. The presented research focuses on the analysis of four typical forecasting models with different levels of complexity that predict the usage of several electrical coffee machines of shared use in office buildings. The results obtained draw on shedding light on the feasibility of embedding simple yet accurate probabilistic models on constrained devices with the aim of saving energy and costs on network infrastructure.}, booktitle = {2018 {Energy} and {Sustainability} for {Small} {Developing} {Economies} ({ES}2DE)}, publisher = {IEEE}, author = {Desraches, Florian and Kamara-Esteban, Oihane and Casado-Mansilla, Diego and Borges, Cruz E.}, month = jul, year = {2018} }']