Principles for the design of advanced flight director systems based on the theory of manual control displays

Design and development of flight director systems based on theory of manual control display

Pilot describing function measurements in a multiloop task

Pilot describing function measurements in multiloop control system tracking tas

Small perturbation dynamics of the neuromuscular system in tracking tasks

Small perturbation dynamics of neuromuscular system in tracking task

Persuasion in Mobile Financial Service: A Case Study with a Bank Savings Mobile Application

Financial institutions are undergoing a technology transformation. The digitization now drives the addition of new services and expectations. In this context, mobile has become a strategic channel to encourage users to adopt specific behaviors and change habits effortlessly. The research question underlying this study focuses on mobile banking applications and how they could support the adoption of savings behaviors. A qualitative study was conducted, in order to evaluate the persuasiveness embedded in a mobile bank saving app. Three experts in human-computer interaction (HCI) assessed the mobile app interfaces through a scientific grid of persuasive criteria to guide their heuristic inspection. Results confirm both a satisfactory level of persuasiveness of the mobile app and the dynamic application of persuasive criteria. The study shows that a mobile app involving certain specific features supports a positive banking customer’s experience related to savings. This study contributes to the user experience field, showing that mobile apps can support behavioral change when persuasiveness is embedded in the design process. Using a valid and reliable assessment method to establish the level of persuasiveness of a bank savings mobile app, this study confirms that the persuasion grid is applicable to mobile interfaces

Salt-dependent rheology and surface tension of protein condensates using optical traps

An increasing number of proteins with intrinsically disordered domains have been shown to phase separate in buffer to form liquid-like phases. These protein condensates serve as simple models for the investigation of the more complex membrane-less organelles in cells. To understand the function of such proteins in cells, the material properties of the condensates they form are important. However, these material properties are not well understood. Here, we develop a novel method based on optical traps to study the frequency-dependent rheology and the surface tension of PGL-3 condensates as a function of salt concentration. We find that PGL-3 droplets are predominantly viscous but also exhibit elastic properties. As the salt concentration is reduced, their elastic modulus, viscosity and surface tension increase. Our findings show that salt concentration has a strong influence on the rheology and dynamics of protein condensates suggesting an important role of electrostatic interactions for their material properties.Comment: 5 pages, 3 figures, 1 supplemen

A Toolkit for Exploring Augmented Reality Through Construction with Children

International audienceAugmented Reality begins to be widely mainstream among children, due to some interactive successes in video games and social networks. Based on this interest, we present CartonEd, an open and complete toolkit suitable for children dedicated to the construction of an augmented reality headset device. The toolkit let the children play and explore augmented reality with and beyond handheld devices. Inspired by the Do-It-Yourself movement, the toolkit includes different components such as blueprints, tutorials, videos, mobile apps, a software development kit and an official website. Among the mobile applications, one is implemented to guide the children through the construction process while experiencing augmented reality. To validate our solution (in particular the construction process and the guiding app) and understand its effect on children in regard to their relation to the augmented reality, we conducted four construction sessions. Our study examines the usability of the guiding app and the construction process. We report in this paper the main components of the CartonEd toolkit and the results of an evaluation among 57 children and teenagers (ages 8-16), showing a positive outcome about their own constructed device (all functional), their feelings and wishes regarding the augmented reality

Prevention of wrong way accidents on highways: a human factors approach

TRA2014 - Transport Research Arena, PARIS, FRANCE, 14-/04/2014 - 17/04/2014Every year, on highways, drivers taking wrong way cause accidents. This paper focuses on a behavioral evaluation of two static road signs to prevent wrong way driving. The devices are a light barrier and the standard wrong way signal (B1) on a yellow background (B1Y). Currently, the design or selection process of road signs does not take into any systematic Human Factors criteria. One of the objectives of the research is to identify a design methodology of road signs. Two questions are asked : 1) how an 'impaired driver' reacts when facing signs designed to prevent a wrong way, 2) to define the impact of this type of road sign on attention and behavior of drivers. Dynamic tests are used to evaluate the robustness of both road signs against different risk factors and more specifically, age. The results of tests give a complete evaluation (qualitative and quantitative) of the wrong way road signs and the implication for road sign design and human factors evaluation.Chaque année sur les routes à chaussées séparées des conducteurs s'engageant en contresens provoque des accidents. Ce document traite de l'évaluation comportementale de deux dispositifs statiques pour empêcher les prises à contresens. Les dispositifs sont une barrière de plots lumineux et le panneau sens interdit classique (B1) sur fond jaune (B1J). Actuellement, le processus de conception ou l'évaluation de signalisations ne prend pas en compte les critères des facteurs humains. L'un des objectifs de la recherche est d'identifier une méthodologie de conception de la signalisation routière. Deux questions sont posées : 1) comment une 'conduite diminué' réagit face à une signalisation anti-contresens, 2) Définir l'impact de cette signalisation sur l'attention et le comportement des conducteurs. Les tests dynamiques ont été réalisés pour évaluer la robustesse des nouvelles signalisations routières par rapport à différents facteurs de risque et de la perception du danger. Les résultats des tests donnent une évaluation complète (qualitative et quantitative) des signalisations anti-contresens et les implications pour la conception de signalisation routière ainsi que l'évaluation des facteurs humains