Browsing NTNU Open by Author "Steinert, Ralf Martin"
Now showing items 1-17 of 17
-
A Combined Photoplethysmography and Force Sensor Prototype for Improved Pulse Waveform Analysis
Solberg, Fredrik Samdal; Kohtala, Sampsa Matias Ilmari; Vestad, Håvard Nitter; Steinert, Ralf Martin (Chapter, 2019)Pulse detection has in recent years received extensive attention in physiological health monitoring, and continuous blood pressure estimation models based on pulse waveform analysis have shown great promises. Two widely ... -
Dealing with Ecological Validity and User Needs when Developing Simulation Based Training Equipment – Case Study of a Medical Palpation Task Trainer
Ege, Daniel Nygård; Lilleløkken, Oscar; Auflem, Marius; Steinert, Ralf Martin (Peer reviewed; Journal article, 2020)Simulation-based training offers a safe and repeatable environment where users can increase their skill level. Development of products facilitating such training is, however, faced with high uncertainty and ambiguous ... -
Demonstrating the Feasibility of Multimodal Neuroimaging Data Capture with a Wearable Electoencephalography + Functional Near-Infrared Spectroscopy (EEG+FNIRS) in Situ
Dybvik, Henrikke; Steinert, Ralf Martin (Peer reviewed; Journal article, 2021)We developed a wearable experimental sensor setup featuring multimodal EEG+fNIRS neuroimaging applicable for in situ experiments of human behavior in interaction with technology. A low-cost electroencephalography (EEG) was ... -
Description of a Wearable Electroencephalography + Functional Near-Infrared Spectroscopy (EEG+FNIRS) for In-Situ Experiments on Design Cognition
Dybvik, Henrikke; Steinert, Ralf Martin (Peer reviewed; Journal article, 2021)We developed a wearable experimental sensor setup featuring multimodal EEG+fNIRS neuroimaging data capture applicable for in situ experiments at a lower financial threshold. Consistent application of a good protocol and ... -
EEG Based Workload and Stress Assessment During Remote Ship Operations
Kari, Raheleh; Gausdal, Anne Haugen; Steinert, Ralf Martin (Peer reviewed; Journal article, 2022)Autonomous and remotely controlled ships present new types of human factor challenges. An investigation of the underlying human factors in such operations is therefore necessary to mitigate safety hazards while improving ... -
Facing the FACS—Using AI to Evaluate and Control Facial Action Units in Humanoid Robot Face Development
Auflem, Marius; Kohtala, Sampsa Matias Ilmari; Jung, Malte; Steinert, Ralf Martin (Peer reviewed; Journal article, 2022)This paper presents a new approach for evaluating and controlling expressive humanoid robotic faces using open-source computer vision and machine learning methods. Existing research in Human-Robot Interaction lacks flexible ... -
Force Orientation Measurement: Evaluating Ski Sport Dynamics
Sletten, Henrik Snarvold; Eikevåg, Sindre Wold; Silseth, Helene; Grøndahl, Harald; Steinert, Ralf Martin (Peer reviewed; Journal article, 2021)A modular sensor application for measuring athlete performance in skiing sports was developed. Using inertial measurement units (IMUs) and load cells in a modular system, a force orientation measurement system, FOMS, was ... -
Human Factor Issues in Remote Ship Operations: Lesson Learned by Studying Different Domains
Kari, Raheleh; Steinert, Ralf Martin (Journal article; Peer reviewed, 2021)The idea of remote controlling ships for operational and commercial uses has developed beyond concepts. Controlling and monitoring vessels from a distant location requires updating the concept and requirements of shore ... -
Inspirational Stimuli Improve Idea Fluency during Ideation: A Replication and Extension Study with Eye-Tracking
Abelson, Filip G.; Aalto, Pasi Olav; Goucher-Lambert, Kosa; Steinert, Ralf Martin (Peer reviewed; Journal article, 2022)We replicate a design ideation experiment (Goucher-Lambert et al., 2019) with and without inspirational stimuli and extend data collection sources to eye-tracking and a think aloud protocol to provide new insights into ... -
Intraoperative Data-Based Haptic Feedback for Arthroscopic Partial Meniscectomy Punch Simulation
Bjelland, Øystein; Pedersen, Morten Dinhoff; Steinert, Ralf Martin; Bye, Robin Trulssen (Peer reviewed; Journal article, 2022)The use of intraoperative tool-tissue interaction data for arthroscopic digital twins has the potential to enhance haptic feedback in surgical simulations. This study demonstrates the implementation of an interpolation-based ... -
A low-cost predictive display for teleoperation: Investigating effects on human performance and workload
Løland, Martin; Gerstenberg, Achim; Slåttsveen, Kristoffer Bjørnerud; Steinert, Ralf Martin (Peer reviewed; Journal article, 2020)Teleoperation in an environment with latency is difficult and highly stressful for human operators, resulting in high cognitive workload and decreased human performance. This work investigates if a simple predictive display ... -
A Modular Research Platform – Proof-of-Concept of a Flexible Experiment Setup Developed for Rapid Testing of Simulators, UIs and Human Physiology Sensors
Hatlem, Leif Arne; Chen, John; Dybvik, Henrikke; Steinert, Ralf Martin (Peer reviewed; Journal article, 2020)This work presents a modular research platform to design, test and run human-machine interaction (HMI) experiments. Traditionally, HMI experiments are time and resource consuming, particularly in the piloting phase. ... -
On prototyping methods to leverage non-rigid materials in the early stages of engineering design
Auflem, Marius; Bøe, Hans Hagenes; Erichsen, Jørgen Falck; Steinert, Ralf Martin (Peer reviewed; Journal article, 2020)Prototyping has been shown important to facilitate learning, inform decisions and to communicate ideas in engineering design. However, it is not evident which methods, tools and materials to use, as prototyping is practised ... -
Perception by Palpation: Development and Testing of a Haptic Ferrogranular Jamming Surface
Rørvik, Sigurd Bjarne; Auflem, Marius; Dybvik, Henrikke; Steinert, Ralf Martin (Peer reviewed; Journal article, 2021)Tactile hands-only training is particularly important for medical palpation. Generally, equipment for palpation training is expensive, static, or provides too few study cases to practice on. We have therefore developed a ... -
Piezoresistive Chopped Carbon Fiber Rubber Silicone Sensors for Shedding Frequency Detection in Alternating Vortex Streets
Vestad, Håvard Nitter; Steinert, Ralf Martin (Chapter, 2019)In nature, fish use sensory input to feel and adapt to flow conditions. Creating solutions that mimic these capabilities need flexible and sensitive sensor solutions. In this paper we use readily available carbon fibers ... -
Real-World fNIRS Brain Activity Measurements during Ashtanga Vinyasa Yoga
Dybvik, Henrikke; Steinert, Ralf Martin (Journal article; Peer reviewed, 2021)Functional near-infrared spectroscopy (fNIRS) is often praised for its portability and robustness towards motion artifacts. While an increasing body of fNIRS research in real-world environments is emerging, most fNIRS ... -
User involvement in early-stage design of medical training devices – case of a palpation task trainer prototype
Ege, Daniel Nygård; Auflem, Marius; Lilleløkken, Oscar; Steinert, Ralf Martin (Journal article, 2021)Design of new medical training equipment is demanding as unavoidable complexity and ambiguity facing designers must be addressed in the early stages of the development. In this paper, a novel concept for abdominal palpation ...