36 documents found, page 1 of 4
Pseudo-haptics survey: Human-computer interaction in extended reality & teleope...
Xavier, R.; Silva, J. L.; Ventura, R.; Jorge, J. A. P.Pseudo-haptic techniques are becoming increasingly popular in human-computer interaction. They replicate haptic sensations by leveraging primarily visual feedback rather than mechanical actuators. These techniques bridge the gap between the real and virtual worlds by exploring the brain’s ability to integrate visual and haptic information. One of the many advantages of pseudo-haptic techniques is that they are ...
Use of programming aids in undergraduate courses
Peixoto, A.; Glória, A.; Silva, J. L.; Pinto-Albuquerque, M.; Brandão, T.; Nunes, L.The use of external tips and applications to help with programming assignments, by novice programmers, is a double-edged sword, it can help by showing examples of problem-solving strategies, but it can also prevent learning because recognizing a good solution is not the same skill as creating one. A study was conducted during the 2superscript{nd} semester of 23/24 in the course of Object Oriented Programming to...
Remote operations and streamlining communication in mars analog missions: Robot...
Luz, R.; Coelho, G.; Campos, M.; Abrantes, R.; Querido, R.; Pereira, M.; Sousa, I.; Corujeira, J.; Silva, J. L.; Ventura, R.Human space exploration typically requires considerable teamwork involving multiple disciplines in science and engineering. Effective and efficient field systems and information flow with the support teams are paramount for mission success, particularly in crewed missions such as the upcoming Artemis (Moon) and planned Mars missions. Moreover, human-robotic teams will be crucial in such scenarios to allow human...
Pseudo-haptics Interfaces for robotic teleoperation
Xavier, R.; Silva, J. L.; Ventura, R.When remotely operating robotic systems, the situation awareness and the absence of the possibility of direct human touch in such a remote environment constitute major challenges in telerobotics. Haptic feedback has been playing an important role when people interact with remote environments (e.g., in robotic teleoperation) or provide more immersive experiences in virtual environments. Like haptic devices, pseu...
Feeling the slope?: Teleoperation of a mobile robot using a 7DOF haptic device ...
Luz, R.; Pereira, A.; Corujeira, J.; Krueger, T.; Beck, J.; Den Exter, E.; Chupin, T.; Silva, J. L.; Ventura, R.A well-known challenge in rover teleoperation is the operator’s lack of situational awareness (SA). This often leads to an inaccurate perception of the rover’s status and surroundings and, consequently, to faulty decision-making by the operator. We present a novel teleoperation interface to control the locomotion of a ground rover with a 7DOF force feedback device (sigma.7), while providing haptic feedback to e...
Evaluation of the fertilizer potential of Chlorella vulgaris and Scenedesmus ob...
Alvarenga, Paula; Martins, M.; Ribeiro, Henrique; Mota, M.; Guerra, I.; Cardoso, H.; Silva, J. L.Producing microalgae with agricultural drainage water (ADW) allows recycling water and nutrients, with the produc- tion of a biofertilizer, avoiding receiving waters' contamination. Chlorella vulgaris and Scenedesmus obliquus were culti- vated using ADW and standard media supplementation and presented higher productivities, relatively to the control industrial growth medium (using freshwater). Selected strains ...
Enhanced teleoperation interfaces for multi-second latency conditions: System d...
Luz, R.; Silva, J. L.; Ventura, R.Adding human cognitive skills to planetary exploration through remote teleoperation can lead to more effective and valuable scientific data acquisition. Still, even small amounts of latency can significantly affect real-time operations, often leading to compromised robot safety, goal overshoot, and high levels of human mental fatigue and cognitive workload. Thus, novel operational strategies are necessary to co...
Physiologically attentive user interface for improved robot teleoperation
Tavares, A. J.; Silva, J. L.; Ventura, R.User interfaces (UI) are shifting from being attention-hungry to being attentive to users’ needs upon interaction. Interfaces developed for robot teleoperation can be particularly complex, often displaying large amounts of information, which can increase the cognitive overload that prejudices the performance of the operator. This paper presents the development of a Physiologically Attentive User Interface (PAUI...
Regenerative swiping: A hybrid vision for improved sustainability with "Free" e...
Silva, J. L.In a world facing climate change emergency, energy harvesting must be improved. Future interactive devices (with new materials) and a move of energy harvesting from devices to users can trigger this improvement. This paper presents a vision on how (many) future interactive devices should be powered. Beyond the benefits of a self-powered and ultra-low power interactive devices vision, a complementary one with se...
Towards higher sense of presence: a 3D virtual environment adaptable to confusi...
Silva Pedro, T.; Silva, J. L.Virtual Reality scenarios where emitters convey information to receptors can be used as a tool for distance learning and to enable virtual visits to company physical headquarters. However, immersive Virtual Reality setups usually require visualization interfaces such as Head-mounted Displays, Powerwalls or CAVE systems, supported by interaction devices (Microsoft Kinect, Wii Motion, among others), that foster n...