@article {800, title = {Smart Device-Based Notifications to Promote Healthy Behavior Related to Childhood Obesity and Overweight}, journal = {Sensors}, volume = {18}, year = {2018}, month = {01/2018}, abstract = {

Obesity is one of the most serious public health challenges of the 21st century and it is a threat to the life of people according to World Health Organization. In this scenario, family environment is important to establish healthy habits which help to reduce levels of obesity and control overweight in children. However, little efforts have been focused on helping parents to promote and have healthy lifestyles. In this paper, we present two smart device-based notification prototypes to promote healthy behavior with the aim of avoiding childhood overweight and obesity. The first prototype helps parents to follow a healthy snack routine, based on a nutritionist suggestion. Using a fridge magnet, parents receive graphical reminders of which snacks they and their children should consume. The second prototype provides a graphical reminder that prevents parents from forgetting the required equipment to practice sports. Prototypes were evaluated by nine nutritionists from three countries (Costa Rica, Mexico and Spain). Evaluations were based on anticipation of use and the ergonomics of human{\textendash}system interaction according to the ISO 9241-210. Results show that the system is considered useful. Even though they might not be willing to use the system, they would recommend it to their patients. Based on the ISO 9241-210 the best ranked features were the system{\textquoteright}s comprehensibility, the perceived effectiveness and clarity. The worst ranked features were the system{\textquoteright}s suitability for learning and its discriminability.

}, keywords = {health, human-centered computing, Ubiquitous Computing}, issn = {1424-8220}, doi = {10.3390/s18010271}, url = {http://www.mdpi.com/1424-8220/18/1/271}, author = {L{\'o}pez, Gustavo and Gonz{\'a}lez, Iv{\'a}n and Jimenez-Garcia, Elitania and Fontecha, Jes{\'u}s and Brenes, Jose A. and Guerrero, Luis A. and Bravo, Jos{\'e}} } @inbook {514, title = {Development and Evaluation of Augmented Object Prototypes for Notifications in Collaborative Writing Environments}, booktitle = {Advances in Human Factors and System Interactions}, volume = {497}, year = {2016}, pages = {301{\textendash}312}, publisher = {Springer International Publishing}, organization = {Springer International Publishing}, address = {Cham}, abstract = {

In Ubiquitous Computing, augmented objects refer to those elements of the real world which have been provided with computational capabilities to meet a specific need. Meanwhile, Collaborative Writing Environments (CWE) allow groups of people to work together and increase the chances of success and share knowledge when they are working on shared documents. An extremely important aspect in CWEs is notification mechanisms as these are essential to provide users awareness about the collaborative work they are doing. In this paper, we describe a set of augmented objects created to support the notification in CWEs; these objects can improve the way in which the notifications are delivered to users, according to the writing strategy defined by the collaboration team.

}, keywords = {Augmented Objects, Collaborative writing environment, Notification system, System interaction, System interfaces, Ubiquitous Computing}, isbn = {978-3-319-41956-5}, doi = {10.1007/978-3-319-41956-5_27}, url = {http://dx.doi.org/10.1007/978-3-319-41956-5_27}, author = {Brenes, Jose A. and L{\'o}pez, Gustavo and Guerrero, Luis A.}, editor = {Nunes, Isabel L.} } @article {115, title = {Human aspects of ubiquitous computing: a study addressing willingness to use it and privacy issues}, journal = {Journal of Ambient Intelligence and Humanized Computing}, year = {2016}, pages = {1{\textendash}15}, abstract = {

Identifying the human aspects related to ubiquitous systems focused on people{\textquoteright}s willingness to use them and privacy concerns was our goal. We selected two ubiquitous systems: a wearable system (Google Glass) and an embedded in context system (Smart Environments). An online survey, with more than 400 participants, which included questions about how people perceive privacy issues related to the use of these two different ubiquitous systems, was conducted. Results show that privacy is not the only factor defining predisposition or aversion towards using ubiquitous systems. Financial, risk, and convenience factors are the others. We discovered that the importance of these factors on the decision to use them or not depends on the system. Regarding privacy, Google Glass generates a higher degree of concern than the Smart Environments alternative. Female participants tend to be more worried than male participants, independently of the ubiquitous system considered. Finally, the youngest participants (16{\textendash}25 years old) are the most concerned about privacy threats, which was unexpected.

}, keywords = {Age, Ambient intelligence, Gender, Privacy, Ubiquitous Computing}, issn = {1868-5145}, doi = {10.1007/s12652-016-0438-4}, url = {http://dx.doi.org/10.1007/s12652-016-0438-4}, author = {L{\'o}pez, Gustavo and Mar{\'\i}n, Gabriela and Calder{\'o}n, Marta} } @inbook {517, title = {Ubiquitous Notification Mechanism to Provide User Awareness}, booktitle = {Advances in Ergonomics in Design}, volume = {485}, year = {2016}, pages = {689{\textendash}700}, publisher = {Springer International Publishing}, organization = {Springer International Publishing}, address = {Cham}, abstract = {

Awareness could be defined as the knowledge that the user has of a particular activity, either individual or collaborative. Good awareness mechanisms provide information to the user at the right time so that s/he can know what is required for her/him to do before s/he is required to do it. Notification mechanisms are a key factor to provide awareness. Ubiquitous technologies can change the paradigm in which notifications are delivered to users. This paper describes the concept and characteristics of awareness, and how researchers have applied different notification mechanisms to provide it. With the lessons learned from 4 project implementations, we propose a service-based plug-and-play framework that models different notification mechanisms that could be used to provide user awareness.

}, keywords = {Human factors, Ubiquitous Computing, User awareness, User experience design, Warning design}, isbn = {978-3-319-41983-1}, doi = {10.1007/978-3-319-41983-1_62}, url = {http://dx.doi.org/10.1007/978-3-319-41983-1_62}, author = {L{\'o}pez, Gustavo and Guerrero, Luis A.}, editor = {Rebelo, Francisco and Soares, Marcelo} } @conference {402, title = {Augmented Object Development using 3D Technology - An Object Redesign Process in the Ubicomp Domain}, booktitle = {Mobile Ubiquitous Computing, Systems, Services and Technologies}, year = {2014}, month = {08/2014}, address = {Rome, Italy}, abstract = {

The construction of augmented object{\textasciiacute}s prototypes is a difficult process because most of the time these prototypes contain several sensors embedded in real life objects. In this paper, we present our experience using 3D technologies (scanning and printing) to generate prototypes of augmented objects which allow an early evaluation of them. Three different objects with embedded sensing and actuating capabilities were designed and developed. We discuss several pros and cons of applying this technology when developing augmented objects. Our results show that the use of 3D technologies enhances the quality of the final prototypes and allows a better concept validation and evaluation.

}, keywords = {3D printing, Augmented Objects, fast prototyping, HCI, mixed reality, Ubiquitous Computing, Usability}, isbn = {978-1-61208-353-7}, url = {http://www.thinkmind.org/index.php?view=article\&articleid=ubicomm\_2014\_5\_30\_10096}, author = {L{\'o}pez, Gustavo and Alvarado, Daniel and Guerrero, Luis A and L{\'o}pez, Mariana} } @article {482, title = {Clairvoyance: A framework to integrate shared displays and mobile computing devices}, journal = {Future Generation Computer Systems}, volume = {34}, year = {2014}, month = {05/2014}, pages = {190 - 200}, abstract = {

Supporting formal and informal meetings with digital information and ubiquitous software systems every day becomes increasingly mandatory. These meetings require that the integration of devices participating in the meeting and the information flow among them should be done as seamless as possible to avoid jeopardizing the natural interactions among participants. Trying to contribute to address such a challenge, this article presents a framework that allows devices integration and smooth information flow. This framework, named Clairvoyance, particularly integrates mobile computing devices and large-screen TVs through a mobile ad hoc network, and thus it eases the implementation of shared displays intended to be used in formal and informal meetings. Clairvoyance provides a set of services through an API, which can be used to develop ubiquitous applications that support meetings in particular scenarios. The preliminary evaluation of this framework considered its usage to implement a ubiquitous system that supports social meetings among friends or relatives. According to developers, the framework is easy to use and it provided all required services for such an application. The solution obtained was then utilized by end-users in simulated meetings. The evaluation results indicate that the Clairvoyance services were suitable to support the informal meetings, and that the devices integration and information flow were transparent for the end-users.

}, keywords = {Encounters, Informal meetings, Information sharing, Mobile ad hoc networks, Peer-to-peer interactions, Shared displays, Ubiquitous Computing}, issn = {0167-739X}, doi = {http://dx.doi.org/10.1016/j.future.2013.10.013}, url = {http://www.sciencedirect.com/science/article/pii/S0167739X13002306}, author = {Christian Berkhoff and Sergio F. Ochoa and Jos{\'e} A. Pino and Jesus Favela and Jonice Oliveira and Luis A. Guerrero} } @inbook {523, title = {An Augmented Object Prototype for Helping to Prevent the Sudden Infant Death Syndrome}, booktitle = {Ambient Assisted Living and Active Aging}, volume = {8277}, year = {2013}, pages = {132-135}, publisher = {Springer International Publishing}, organization = {Springer International Publishing}, chapter = {An Augmented Object Prototype for Helping to Prevent the Sudden Infant Death Syndrome}, abstract = {

The Sudden Infant Death Syndrome causes unexpected death of infants. Some of the risk factors are related to the prone or side sleeping, ambient temperature and bedclothes overhead, among others. We state that some of these risk factors can be sensed using an augmented object in the bedclothes of the infants, and that the collected information can be sent to an adult through a mobile application. In this paper we present a prototype with sensor-base interfaces that can prevent the Sudden Infant Death Syndrome.

}, keywords = {Augmented Objects, Healthcare, Sensor-based interfaces, Ubiquitous Computing}, isbn = {978-3-319-03091-3}, doi = {10.1007/978-3-319-03092-0_20}, url = {http://dx.doi.org/10.1007/978-3-319-03092-0_20}, author = {L{\'o}pez, Gustavo and L{\'o}pez, Mariana and Guerrero, LuisA.}, editor = {Nugent, Christopher and Coronato, Antonio and Bravo, Jos{\'e}} } @inbook {503, title = {Development and Evaluation of an Augmented Object for Notifications of Particular Emails}, booktitle = {Ambient Assisted Living and Active Aging}, volume = {8277}, year = {2013}, pages = {128{\textendash}131}, publisher = {Springer International Publishing}, organization = {Springer International Publishing}, chapter = {Development and Evaluation of an Augmented Object for Notifications of Particular Emails}, address = {Cham}, abstract = {

Email is an essential tool for most of the people. However, the amount of messages, including spam, we receive every day complicates our ability to concentrate on messages we consider important. In this project we design and develop a prototype of an augmented object that notifies users when important mail arrives. The process of design, development and testing is described and discussed in this paper.

}, keywords = {Ambient intelligence, Augmented Objects, Ubiquitous Computing}, isbn = {978-3-319-03092-0}, doi = {10.1007/978-3-319-03092-0_19}, url = {http://dx.doi.org/10.1007/978-3-319-03092-0_19}, author = {Herrera, Gustavo L{\'o}pez and L{\'o}pez, Mariana and Guerrero, Luis A.}, editor = {Nugent, Christopher and Coronato, Antonio and Bravo, Jos{\'e}} } @inbook {529, title = {Improving the Process for Developing Augmented Objects: An HCI Perspective}, booktitle = {Ubiquitous Computing and Ambient Intelligence. Context-Awareness and Context-Driven Interaction}, volume = {8276}, year = {2013}, pages = {111{\textendash}118}, publisher = {Springer International Publishing}, organization = {Springer International Publishing}, chapter = {Improving the Process for Developing Augmented Objects: An HCI Perspective}, address = {Cham}, abstract = {

The process of designing and creating fine Augmented Objects is not an easy task. In this paper we state that Augmented Objects are just interfaces for specific software systems. In this way, the process of design, construction and testing of Augmented Objects should be part of a Software Engineering methodology, likewise Human Computer Interaction deals with software interfaces. A previously proposed methodology for creating Augmented Objects was evaluated.\  Three new augmented objects were created. Advantages and disad-vantages for using this methodology for creating no-traditional interfaces are reported.

}, keywords = {Ambient intelligence, Augmented Objects, HCI, Ubiquitous Computing}, isbn = {978-3-319-03176-7}, doi = {10.1007/978-3-319-03176-7_15}, url = {http://dx.doi.org/10.1007/978-3-319-03176-7_15}, author = {L{\'o}pez, Gustavo and L{\'o}pez, Mariana and Guerrero, Luis A.}, editor = {Urzaiz, Gabriel and Ochoa, Sergio F. and Bravo, Jos{\'e} and Chen, Liming Luke and Oliveira, Jonice} }