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   A Two-Level Approach to Characterizing Human Activities from Wearable Sensor DataFaye, Sébastien  ; Louveton, Nicolas ; Gheorghe, Gabriela et alin Journal of Wireless Mobile Networks, Ubiquitous Computing, and Dependable Applications (2016), 7(3), The rapid emergence of new technologies in recent decades has opened up a world of opportunities for a better understanding of human mobility and behavior. It is now possible to recognize human movements ... [more ▼] The rapid emergence of new technologies in recent decades has opened up a world of opportunities for a better understanding of human mobility and behavior. It is now possible to recognize human movements, physical activity and the environments in which they take place. And this can be done with high precision, thanks to miniature sensors integrated into our everyday devices. In this paper, we explore different methodologies for recognizing and characterizing physical activities performed by people wearing new smart devices. Whether it’s smartglasses, smartwatches or smartphones, we show that each of these specialized wearables has a role to play in interpreting and monitoring moments in a user's life. In particular, we propose an approach that splits the concept of physical activity into two sub-categories that we call micro- and macro-activities. Micro- and macro-activities are supposed to have functional relationship with each other and should therefore help to better understand activities on a larger scale. Then, for each of these levels, we show different methods of collecting, interpreting and evaluating data from different sensor sources. Based on a sensing system we have developed using smart devices, we build two data sets before analyzing how to recognize such activities. Finally, we show different interactions and combinations between these scales and demonstrate that they have the potential to lead to new classes of applications, involving authentication or user profiling. [less ▲] Detailed reference viewed: 211 (14 UL)Not a Tile Out of Place: Toward Creating Context-Dependent User Interfaces on Smartglasses; ; et al in Proceedings of the 9th International Conference on Human System Interaction (HSI'16) (2016, July) Despite the rapid pace of gadgets released on the market, research in the area of usable interfaces for wearables is lagging behind. Smartglasses are new wearables that embed diverse sensors but also have ... [more ▼] Despite the rapid pace of gadgets released on the market, research in the area of usable interfaces for wearables is lagging behind. Smartglasses are new wearables that embed diverse sensors but also have small displays, and this makes it hard for the wearer to visualize real-time data. To bridge this gap, the contribution of this paper is threefold. First, we propose a data representation model to combine applications and services that match user activities and contexts. Second, we present an approach of showing relevant services to the user based on 'tiles' (such as those in recent Microsoft Windows interfaces) while considering the device constraints. Finally, we suggest that combining those two aspects can open the way to personalized services for the end user, creating new ways of interacting with applications and devices. [less ▲] Detailed reference viewed: 325 (9 UL)Heat is in the Eye of the Beholder: Towards Better Authenticating on SmartglassesGheorghe, Gabriela ; Louveton, Nicolas ; et alin Proceedings of the 9th International Conference on Human System Interaction (HSI'16) (2016, July) Smart and wearable devices are trendy electronic objects that have become increasingly popular in recent years. Those devices are, by definition, tightly connected with the user's personal activities ... [more ▼] Smart and wearable devices are trendy electronic objects that have become increasingly popular in recent years. Those devices are, by definition, tightly connected with the user's personal activities. Authentication is therefore a critical feature for both identifying users and personalizing the services on the device. In particular, the emergence of smartglasses changed the way we thought a wearable could assist users in their daily activities. As designed by commercial providers, smartglasses are sold with a very specific set of interactions capabilities. These capabilities have a strong impact on how comfortably or safely users may authenticate to their smartglasses. For this reason, we investigate in this paper the different authentication methods available for smartphones and we comparatively position the smartglasses in the design space of authentication methods. We propose a new approach based on touch input on an arbitrary surface using thermal camera input. This approach aims to circumvent the lack of touch surface provided by smartglasses, while maintaining an acceptable level of security. [less ▲] Detailed reference viewed: 312 (9 UL) Toward a Characterization of Human Activities using Smart Devices: A Micro/Macro ApproachFaye, Sébastien ; Louveton, Nicolas ; Gheorghe, Gabriela et alin Proceedings of the 7th IEEE INFOCOM International Workshop on Mobility Management in the Networks of the Future World (2016, April) The emergence of new connected devices has opened up new opportunities and allowed to imagine concepts that bring computer sciences and social sciences closer together. In particular, today's increasingly ... [more ▼] The emergence of new connected devices has opened up new opportunities and allowed to imagine concepts that bring computer sciences and social sciences closer together. In particular, today's increasingly sophisticated miniature sensors allow to track and understand human activities and behavior with a great precision. Taking different approaches and perspectives, we use in this paper smartwatches and smartglasses to explore these behaviors and show that these objects, considered by many as gadgets, have an important role to play in understanding the lives of individuals. The main objective of this work is to introduce two new scales of activity detection, which lacks a formal and consistent definition in the literature. First, we propose a model that precisely detects and interprets movements made by a person wearing smart devices. Then, we use this model to show different interactions between those micro-activities and bigger chunks of behaviors we call macro-activities. Using a new concept based on 3D visualization, we finally show that combining those two scales and using a limited dataset, it is possible to distinguish between different individuals when they are performing very similar activities. The findings of this study lead the way to enhanced user profiling. [less ▲] Detailed reference viewed: 387 (38 UL)Towards more secure and usable cloud storage for E-Health; Gheorghe, Gabriela Report (2015) Secure storage for medical data when using cloud systems is a problem of high importance to healthcare institutions and cloud providers as well. This report investigates how safe is the storage provided ... [more ▼] Secure storage for medical data when using cloud systems is a problem of high importance to healthcare institutions and cloud providers as well. This report investigates how safe is the storage provided by state of the art tools, discusses their limitations and proposes some solutions and techniques to improve confidentiality when storing medical data remotely. [less ▲] Detailed reference viewed: 253 (24 UL)Network troubleshooting with SDN-RADAR (demo paper); Gheorghe, Gabriela ; Palattella, Maria Rita et alin Proc. of IFIP/IEEE International Symposium on Integrated Network Management (IM) (2015, May) Detailed reference viewed: 175 (7 UL)SDN-RADAR: Network troubleshooting combining user experience and SDN capabilitiesGheorghe, Gabriela ; ; Palattella, Maria Rita et alin Proc. of IEEE Conf. on Network Softwarization (NetSoft) (2015, April) Detailed reference viewed: 247 (11 UL)Assessing IT Security Standards Against the Upcoming GDPR for Cloud SystemsBartolini, Cesare ; Gheorghe, Gabriela ; Giurgiu, Andra et alPoster (2015, March 11) This work in progress aims at identifying a mapping between the current security standards (in particular, but not limited to, ISO 27001-2013) and the upcoming regulations in data protection. The aim is ... [more ▼] This work in progress aims at identifying a mapping between the current security standards (in particular, but not limited to, ISO 27001-2013) and the upcoming regulations in data protection. The aim is to find an overlap between the requirements for data protection and the existing security standards, to measure the gap that a business has to cross (and consequently an estimate of the expenses that it must sustain) to achieve compliance with the GDPR. [less ▲] Detailed reference viewed: 2034 (46 UL)Towards Reinventing Online PrivacyGheorghe, Gabriela ; Engel, Thomas in Berendt, Bettina; Engel, Thomas; Ikonomou, Demosthenes (Eds.) et al LNCS - Annual Privacy Forum 2015 - Bridging the gap between research and policy (2015) Detailed reference viewed: 216 (3 UL)Verifying cloud services: present and future; ; et al in ACM SIGOPS: Operating Systems Review (2013), 47 Detailed reference viewed: 97 (10 UL)POSTER: Critique of the CISSP Common Body of Knowledge of Cryptography; Gheorghe, Gabriela Poster (2013) Detailed reference viewed: 172 (6 UL)POSTER: Preserving Privacy and Accountability for Personal DevicesGheorghe, Gabriela ; Poster (2013) Detailed reference viewed: 169 (13 UL)GoCoMM: a governance and compliance maturity modelGheorghe, Gabriela ; ; et alin GoCoMM: a governance and compliance maturity model (2009) Detailed reference viewed: 61 (3 UL)Enforcing DRM policies across applications; ; Gheorghe, Gabriela et alin Proceedings of the 8th ACM workshop on Digital rights management, October 2008 (2008) Detailed reference viewed: 128 (14 UL) |
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