179 research outputs found
Developing a Peer Mentorship Program in Human Factors Academia
Peer mentorship programs that pair more experienced students (i.e., mentors) with less experienced students (i.e., mentees) can have an effective, positive impact on university students’ personal, academic, and professional outcomes. The purpose of this paper is to describe the process and lessons learned in the creation of a peer mentorship program in a Human Factors and Ergonomics (HF/E) academic department. Through a combination of peer networking opportunities and skill development workshops, the mentorship program outlined in this paper aims to promote students’ academic and professional growth. Take-aways that can be utilized by other HF/E academia departments interested in starting or revamping their own peer mentorship programs are included
An agent-based intelligent tutoring system for nurse education
This report describes the development of a teaching environment that uses agents to support learning. An Intelligent Tutoring System will be described, that guides students during learning. This system is meant for nurse education in the first place, but it is generic in the sense that the core is separated from the exercise modules and user interfaces. This means that the system can also be used for other (non-nursing) exercises. Exercises can be provided to the system in the form of XML data-files. A user interface can be text-based or 2D, but it can also be a 3D virtual reality environment. An application of the teaching environment for nurse training is described
Typing In Mid-Air With Mixed Reality
The Microsoft HoloLens 2 is a mixed reality headset that has been described as the workplace of the future (Wright, 2018), that places virtual elements on top of the user’s physical environment. The HoloLens 2 gives users the freedom to check emails, search the web, and use other Microsoft applications while still maintaining awareness of their surroundings. With these features comes the need for text input on the device. Prior research on the HoloLens 1 showed that text input controlled by head movements and air-tap hand gestures was slow, fatiguing, and frustrating for users (Derby, Rarick, & Chaparro, 2019). The HoloLens 2 attempts to improve on these concerns by implementing direct interaction with a virtual keyboard similar to that of a traditional physical keyboard. This similarity is achieved through the incorporation of hand tracking and near interaction, in addition to the tap and hold gestures of the HoloLens 1 (Meijers, 2020). This study will be attempting to evaluate the efficiency, usability, and performance of these improved text input methods on the HoloLens 2, while comparing the results to that of past research done on the HoloLens 1 to validate changes between models.
Derby, J.L, Rarick, C. T, & Chaparro, B.S. (2019). Text input performance with a mixed reality head-mounted display (HDM). Human Factors and Ergonomics Society, 1476-1480. DOI: 10.1177/1071181319631279
Wright, N. (2018, November 27). How Microsoft HoloLens could change the way we work [Blog post]. Retrieved from https://www.nigelfrank.com/blog/how-microsoft-hololens-could-change-the-way-we-work/
Meijers, A. (2020). HoloLens. Immersive Office 365 Bringing Mixed Reality and HoloLens into the Digital Workplace (1st ed. 2020.). Apress. https://doi.org/10.1007/978-1-4842-5845-
Thinking Out-of-the-Box with Board Games
This study demonstrates the user experience measurement technique of Out-of-Box Experience (OOBE) with a commercially available strategy board game. This method of study explores a user’s first impressions with a product, and has yet to be tested on board games in current literature. Participants were observed as they used the board game for the first time in each of the following four stages: Unboxing, Setup, Initial Play, and Disassembly. Participants were also queried for their feedback and expectations during each phase. Analysis of this data revealed several themes contributing to overall user satisfaction. Players gravitated to the art style, look, and theme of the board and pieces. However, users were frustrated with the instructions, assembly, and fundamental mechanics of gameplay. These themes can be used for design recommendations and improvements for similar board games. These findings demonstrate how OOBE can be applied to different applications, facilitating unique and interesting data that researchers would otherwise be unable to achieve
Extreme magneto-transport of bulk carbon nanotubes in sorted electronic concentrations and aligned high performance fiber
We explored high-field (60T) magneto-resistance (MR) with two carbon nanotube (CNT) material classes: (1) unaligned single-wall CNTs (SWCNT) films with controlled metallic SWCNT concentrations and doping degree and (2) CNT fiber with aligned, long-length microstructure. All unaligned SWCNT films showed localized hopping transport where high-field MR saturation definitively supports spin polarization instead of a more prevalent wave function shrinking mechanism. Nitric acid exposure induced an insulator to metal transition and reduced the positive MR component. Aligned CNT fiber, already on the metal side of the insulator to metal transition, had positive MR without saturation and was assigned to classical MR involving electronic mobility. Subtracting high-field fits from the aligned fiber's MR yielded an unconfounded negative MR, which was assigned to weak localization. It is concluded that fluctuation induced tunnelling, an extrinsic transport model accounting for most of the aligned fiber's room temperature resistance, appears to lack MR field dependence
The High Magnetic Field Phase Diagram of a Quasi-One Dimensional Metal
We present a unique high magnetic field phase of the quasi-one dimensional
organic conductor (TMTSF)ClO. This phase, termed "Q-ClO", is
obtained by rapid thermal quenching to avoid ordering of the ClO anion. The
magnetic field dependent phase of Q-ClO is distinctly different from that
in the extensively studied annealed material. Q-ClO exhibits a spin density
wave (SDW) transition at 5 K which is strongly magnetic field
dependent. This dependence is well described by the theoretical treatment of
Bjelis and Maki. We show that Q-ClO provides a new B-T phase diagram in the
hierarchy of low-dimensional organic metals (one-dimensional towards
two-dimensional), and describe the temperature dependence of the of the quantum
oscillations observed in the SDW phase.Comment: 10 pages, 4 figures, preprin
Circular-Polarization Dependent Cyclotron Resonance in Large-Area Graphene in Ultrahigh Magnetic Fields
Using ultrahigh magnetic fields up to 170 T and polarized midinfrared
radiation with tunable wavelengths from 9.22 to 10.67 um, we studied cyclotron
resonance in large-area graphene grown by chemical vapor deposition.
Circular-polarization dependent studies reveal strong p-type doping for
as-grown graphene, and the dependence of the cyclotron resonance on radiation
wavelength allows for a determination of the Fermi energy. Thermal annealing
shifts the Fermi energy to near the Dirac point, resulting in the simultaneous
appearance of hole and electron cyclotron resonance in the magnetic quantum
limit, even though the sample is still p-type, due to graphene's linear
dispersion and unique Landau level structure. These high-field studies
therefore allow for a clear identification of cyclotron resonance features in
large-area, low-mobility graphene samples.Comment: 9 pages, 3 figure
A cascade of magnetic field induced spin transitions in LaCoO3
We present magnetization and magnetostriction studies of the insulating
perovskite LaCoO3 in magnetic fields approaching 100 T. In marked contrast with
expectations from single-ion models, the data reveal two distinct first-order
spin transitions and well-defined magnetization plateaux. The magnetization at
the higher plateau is only about half the saturation value expected for spin-1
Co3+ ions. These findings strongly suggest collective behavior induced by
strong interactions between different electronic -- and therefore spin --
configurations of Co3+ ions. We propose a model of these interactions that
predicts crystalline spin textures and a cascade of four magnetic phase
transitions at high fields, of which the first two account for the experimental
data.Comment: 5 pages + supplementary materials, 5 figure
A Transition Model from Web of Things to Speech of Intelligent Things in a Smart Education System
Several terms have been used to describe Internet of Things; Web of Things (WoT) is a
term which can be used interchangeability and it is referred to as the capability of
devices to interconnect to the World Wide Web and sharing the information and data
to one another. WoT has been mentioned in the literature to improve interconnection
between devices at all times. In WoT, two different modes of communication which are
generally mentioned in previous studies include person-to-thing (or thing-to-person)
and thing-to-thing. This paper presents an architecture for transiting from WoT to
speech-enabled WoT known as Speech of Intelligent Things (SoIT). The system
employs a combination of technologies such as system design, server-side scripting,
speech-based system tools, and data management in developing the SoIT prototype
system as a third mode of communication. This paper illustrates a scenario whereby
remote monitoring and controlling of WoT devices within the university campus might
be difficult to manage by only using the modes discussed in the literature. An evolution
of WoT to SoIT was realized using speech technology to provide a prototype system.
Technical implications involve using a telephone by connecting an object telephone
number (OTN) and dial WoT objects and establish a control mechanism. The research
limitation is mainly the cost of dialing an OTN number. The contribution of this paper
is to favor and encourage the use of speech technology to enhance the convenience of
communication between WoT devices within the school campus
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