增强现实系统中基于神经网络的磁力跟踪器校正

Nonlinear errors always exist in data obtained from tracker in augmented reality （AR）, which badly influence the effect of AR. This paper proposes to rectify the errors using BP neural network. As BP neural network is prone to getting into local extrema and convergence is slow, genetic algorithm is employed to optimize the initial weights and threshold of neural network. This paper discusses how to set the crucial parameters in the algorithm. Experimental results show that the method ensures that the neural network achieves global convergence quickly and correctly. Tracking precision of AR system is improved after the tracker is rectified, and the third dimension of AR system is enhanced.     

Rectification of magnetic force tracker using neural network inaugmented reality system

1IntroductionAugmented reality(AR)is a newtechnique based onvirtual reality,which has attracted much attention inrecent years.AR is used to describe a system thatenhances the real world by superi mposing computer-generated information on top of it.It supp…     

A comparison study of augmented reality versus interactive simulation technology to support student learning of a socio-scientific issue

We investigated the impact of an augmented reality (AR) versus interactive simulation (IS) activity incorporated in a computer learning environment to facilitate students' learning of a socio-scientific issue (SSI) on nuclear power plants and radiation pollution. We employed a quasi-experimental research design. Two classes (a total of 45 ninth-grade students) were randomly assigned to either the AR or IS treatments. We compared three outcome variables of the AR and IS groups: knowledge of and attitude towards the SSI, and perceptions of the AR or IS feature. We also examined the interplay among the three variables within each of the two groups. The results indicated no significant differences in knowledge and attitude, but a significant difference in the perceptions between the two groups. Moreover, different patterns of correlations among the variables were identified. The implication includes educational impact of emerging AR technologies to support affective aspects of student learning of SSIs.     

Virtual,augmented and mixed reality in K–12 education: a review of the literature

ABSTRACT

This article provides the first review of the existing literature consolidating research into the use of virtual, augmented and mixed reality technologies within K–12 educational environments. The review explores the peer-reviewed scholarly studies conducted between 2006 and May 2017, which involved the use of virtual reality (VR), augmented reality (AR) or mixed reality (MR) technologies in the instruction of students in elementary, middle or high school. The literature revealed common themes including collaboration, communication, critical thinking, attitude, engagement, learning, motivation, performance or achievement, and technology (used or proposed). This literature review will contribute to the field by providing clarity on definitions for VR, AR and MR technologies in consideration of educational use, present an overview of the existing research on VR, AR and MR specific to K–12 educational environments and identify future research needs and directions.     

The effect of using augmented reality and sensing technology to teach magnetism in high school physics

ABSTRACT

The purpose of this study is to investigate the effect of MagAR, an instructional material for teaching magnetism using augmented reality and sensing technology, on students’ academic achievement and learning process, and to identify students’ views about augmented reality. An embedded mixed-method approach was employed in this study. The study’s results suggest that AR learning environments are effective in teaching physics, and facilitate learning by adding visual and textual components to the learning process. In learning activities integrated with AR, the students were observed to participate more, appeared more comfortable, were able to answer questions related to the subject more easily, had increased self-confidence and exhibited higher academic achievement levels in physics. The results suggest that AR should not be considered as an independent learning environment for the teaching of physics, but would be more effective as supplementary to the laboratory environment.     

Scoping review: The use of augmented reality in clinical anatomical education and its assessment tools

The purpose of this review was to identify the different augmented reality (AR) modalities used to teach anatomy to students, health professional trainees, and surgeons, and to examine the assessment tools used to evaluate the performance of various AR modalities. A scoping review of four databases was performed using variations of: (1) AR, (2) medical or anatomical teaching/education/training, and (3) anatomy or radiology or cadaver. Scientific articles were identified and screened for the inclusion and exclusion criteria as per Preferred Reporting Items for Systematic Reviews and Meta-Analyses with extension for scoping reviews guidelines. Virtual reality was an exclusion criterion. From this scoping review, data were extracted from a total of 54 articles and the following four AR modalities were identified: head-mounted display, projection, instrument and screen, and mobile device. The usability, feasibility, and acceptability of these AR modalities were evaluated using a variety of quantitative and qualitative assessment tools. Within more recent years of AR integration into anatomy education, the assessment of visuospatial ability, cognitive load, time on task, and increasing academic achievement outcomes are variables of interest, which continue to warrant more exploration. Sufficiently powered studies using validated assessment tools must be conducted to better understand the role of AR in anatomical education.     

AR技术在地理教学中的应用初探——以“地球的运动”为例

增强现实技术AR以其虚实叠加的情景、形象立体的演示和实时的交互式体验等优势,成为一种新型的学习和传播知识的途径,近年来得到迅猛发展。文章以地球的运动为例,尝试将增强现实技术AR引入地理教学,对比传统教学方式,如板图板画教学、多媒体教学,探讨分析各自的优缺点,整合前人经验,探索新技术、新模式。     

Mixed-methods exploration of students' motivation in using augmented reality in neuroanatomy education with prosected specimens

The use of augmented reality (AR) in teaching and studying neuroanatomy has been well researched. Previous research showed that AR-based learning of neuroanatomy has both alleviated cognitive load and was attractive to young learners. However, how the attractiveness of AR effects student motivation has not been discovered. Therefore, the motivational effects of AR were investigated in this research by the use of quantitative and qualitative methods. Motivation elicited by the GreyMapp-AR, an AR application, was investigated in medical and biomedical sciences students (n = 222; mean age: 19.7 ± 1.4 years) using the instructional measure of motivation survey (IMMS). Additional components (i.e., attention, relevance, confidence, and satisfaction) were also evaluated with motivation as measured by IMMS. Additionally, 19 students underwent audio-recorded individual interviews which were transcribed for qualitative analysis. Males regarded the relevance of AR significantly higher than females (P < 0.024). Appreciation of the GreyMapp-AR program was found to be significantly higher in students studying biomedical sciences as compared to students studying medicine (P < 0.011). Other components and scores did not show significant differences between student groups. Students expressed that AR was beneficial in increasing their motivation to study subcortical structures, and that AR could be helpful and motivating for preparing an anatomy examination. This study suggests that students are motivated to study neuroanatomy by the use of AR, although the components that make up their individual motivation can differ significantly between groups of students.     

Evaluating the integration of body donor imaging into anatomical dissection using augmented reality

Augmented reality (AR) has recently been utilized as an integrative teaching tool in medical curricula given its ability to view virtual objects while interacting with the physical environment. The evidence for AR in medical training, however, is limited. For this reason, the purpose of this mixed method study was to evaluate the implementation of overlaying donor-specific diagnostic imaging (DSDI) onto corresponding body donors in a fourth-year, dissection-based, medical elective course entitled anatomy for surgeons (AFS). Students registered in AFS course were separated into groups, receiving either DSDI displayed on Microsoft HoloLens AR head-mounted display (n = 12) or DSDI displayed on iPad (n = 15). To test for the change in spatial ability, students completed an anatomical mental rotation test (AMRT) prior to and following the AFS course. Students also participated in a focus group discussion and completed a survey at the end of AFS, analyzed through thematic triangulation and an unpaired, Mann Whitney U test respectively, both addressing dissection experience, DSDI relevancy to dissection, and use of AR in anatomical education. Although statistically significant differences were not found when comparing student group AMRT scores, survey and discussion data suggest that the HoloLens had improved the students' understanding of, and their spatial orientation of, anatomical relationships. Trunk dissection quality grades were significantly higher with students using the HoloLens. Although students mentioned difficulties with HoloLens software, with faculty assistance, training, and enhanced software development, there is potential for this AR tool to contribute to improved dissection quality and an immersive learning experience.     

A systematic review of immersive technology applications for medical practice and education - Trends,application areas,recipients, teaching contents,evaluation methods,and performance

Virtual reality (VR), augmented reality (AR), mixed reality (MR), and extended reality (XR) are examples of immersive technologies that have the potential to improve medical practice and education. As a result, they have recently sparked much research interest. However, there are few reviews related to the use of immersive technologies (including VR, AR, MR, and XR) in medical practice and education. Remarkably, six research questions related to the trends, application areas, recipients, teaching contents, evaluation methods, and performance remain unanswered. To this end, this study conducts a systematic review to analyse 128 articles from 2012 source papers, all of which are indexed in the Web of Science. The review results indicate that immersive technology is currently used primarily on surgery and anatomy-related subjects for doctors, medical students and interns. Furthermore, group experiments are the most commonly used data collection method. The results provide insights into the current research trends related to immersive technology applications for medical practice and education. They also serve as an essential reference for scholars in the medical practice and education contexts.     

Making the Invisible Visible in Science Museums Through Augmented Reality Devices

Despite the potential of augmented reality (AR) in enabling students to construct new understanding, little is known about how the processes and interactions with the multimedia lead to increased learning. This study seeks to explore the affordances of an AR tool on learning that is focused on the science concept of magnets and magnetic fields. Seventy students in grades 5 through 7 participated in the study in a non- AR or AR condition. Findings showed that students in the AR condition interacted with the magnets significantly longer and demonstrated higher amounts of teamwork. In interviews, students identified five affordances of the AR on learning that are closely related to the literature on dynamic visualizations, such as the ability to visualize invisible phenomenon and scaffolds that focus attention on relevant information.     

Potential use of Augmented Reality in LIS education

The subject of this article is the use of augmented reality technology in library and information science education. The aim is to determine the scope and potential uses of augmented reality in the education of information professionals. In order to determine the scope and forms of potential use of AR technology in LIS education a two-step analysis was conducted. The first stage was the in-depth analysis of LIS training programs offered by academic centers in Poland, including 8 programs (4 bachelor degree and 4 master degree). In this way, more than 350 learning outcomes were analyzed and grouped according to the frequency of occurrence. During the second stage of the study a list of the most important learning outcomes was compared with a list of skill areas that AR technology helps to develop, in order to formulate conclusions according to the potential use of AR in LIS education. Summarizing the results of the study, it can be concluded that AR technology is a useful teaching tool which enables students to achieve improved learning outcomes in the practical skills needed by librarians, as well as the personal and social competencies relevant to labor market needs.     

Learner presence,perception, and learning achievements in augmented–reality–mediated learning environments

Although research has indicated that augmented reality (AR)–facilitated instruction improves learning performance, further investigation of the usefulness of AR from a psychological perspective has been recommended. Researchers consider presence a major psychological effect when users are immersed in virtual reality environments. However, most research on learner presence has focused on measuring it rather than the factors influencing it. This study explored the relationship between learner perception and presence in an AR-facilitated learning environment. A game-type AR learning process was developed and an experiment was implemented employing a one-group pretest–posttest method. Three sets of research instruments were developed, comprising a learning achievement test, a learner's presence inventory, and a questionnaire on learners’ perception of the AR-mediated environment. A total of 60 validated data samples were collected and statistically analysed. The researchers determined that learner presence closely relates to learning achievement and AR learning perception. These results indicate that a more satisfactory AR perception leads to a higher level of learner presence in the AR environment, thereby resulting in more beneficial learning outcomes.     

沉浸式增强现实与高等教育的融合探索

在工业4.0的未来,数字化越来越日常化,技术将是互动、学习和获取知识的重要组成部分。教育和职业、生活等各个领域将会迎来新的要求和新的挑战,那么我们的高等教育也将应与之相适应。增强现实(AR)技术是人们好奇的新技术之一,AR在未来将为教育提供重要的贡献。文章从增强现实的概念、软硬件应用程序、现有教育中的应用来分析增强现实在高等教育中的融合应用。     

An Investigation of University Students’ Collaborative Inquiry Learning Behaviors in an Augmented Reality Simulation and a Traditional Simulation

The purpose of this study is to investigate and compare students’ collaborative inquiry learning behaviors and their behavior patterns in an augmented reality (AR) simulation system and a traditional 2D simulation system. Their inquiry and discussion processes were analyzed by content analysis and lag sequential analysis (LSA). Forty university students were divided into dyads and then randomly assigned into AR group and traditional 2D group to collaboratively conduct an inquiry task about elastic collision. The results of the content analysis and LSA indicated that both systems supported students’ collaborative inquiry learning. Particularly, students showed high frequencies on higher-level inquiry behaviors, such as interpreting experimental data or making conclusions, when using these two simulations. By comparing the behavioral patterns, similarities and differences between the two groups were revealed. The AR simulation engaged the students more thoroughly in the inquiry process. Moreover, students in both groups adopted the same approaches to design experiments. Due to the line of AR research is in its initial stage, suggestions for future studies were proposed.     

A Model for Augmented Reality Immersion Experiences of University Students Studying in Science Education

Journal of Science Education and Technology - The aim of this study is to investigate the augmented reality (AR) immersion experiences of university students studying in science education. The...     

Evaluating virtual reality and augmented reality training for industrial maintenance and assembly tasks

The current study evaluated the use of virtual reality (VR) and augmented reality (AR) platforms, developed within the scope of the SKILLS Integrated Project, for industrial maintenance and assembly (IMA) tasks training. VR and AR systems are now widely regarded as promising training platforms for complex and highly demanding IMA tasks. However, there is a need to empirically evaluate their efficiency and effectiveness compared to traditional training methods. Forty expert technicians were randomly assigned to four training groups in an electronic actuator assembly task: VR (training with the VR platform twice), Control-VR (watching a filmed demonstration twice), AR (training with the AR platform once), and Control-AR (training with the real actuator and the aid of a filmed demonstration once). A post-training test evaluated performance in the real task. Results demonstrate that, in general, the VR and AR training groups required longer training time compared to the Control-VR and Control-AR groups, respectively. There were fewer unsolved errors in the AR group compared to the Control-AR group, and no significant differences in final performance between the VR and Control-VR groups, probably due to a ceiling effect created by the use of two training trials in the selected task for participants who were expert technicians. The results suggest that use of the AR platform for training IMA tasks should be encouraged and use of the VR platform for that purpose should be further evaluated.     

The effect of design education using virtual reality-based coding on student competence and educational satisfaction

Education and Information Technologies - Virtual reality (VR) technology is playing a crucial role in the changing paradigm of education. In many cases, however, VR technology is not being taught...     

Challenges and Prospects of Virtual Reality and Augmented Reality Utilization among Primary School Teachers: A Developing Country Perspective

The concepts of virtualization for facilitating learning have become the focus of attention in several countries. Yet, the limited understanding of how technologies such as augmented reality (AR) and virtual reality (VR) can be used to improve the learning and teaching of science makes it difficult for educational policy makers to apply additional measures in order to ensure the availability of equipment and trained staff. A semi-structured interview was used to gather data from primary school teachers about the challenges and prospects of utilizing VR and AR technologies in teaching science subjects. A set of evidence and recommendations on AR and VR utilization for teaching science were provided based on an interview of 29 science teachers. It was determined that lack of competency, limited instructional design, lack of focused attention, lack of time, and limited environmental resources were common challenges in VR and AR utilization. In addition, we found that both technologies can be used to promote exploratory behavior and perceived usefulness and develop a positive attitude. Other findings related to these aspects were identified and described. The outcomes from this study can provide insights for administrators and policy makers to set priorities for using VR and AR in school practice to carry out various reflective and exploration tasks.     

Transformational professional development: (re)claiming agency and change (in the margins)

With performativity and evidence-based teaching, the development of action research (AR) by teachers brings tensions and challenges as teachers move outside their comfort zones and question their practice. This article draws on a small-scale research study developed with teachers. It was funded as part of a professional development initiative by a Teaching School Alliance to support partner schools with university support to build teacher-led systematic research into everyday practice. The dataset combined interviews with teachers about their motivations and experiences, field notes from the sessions, the teachers’ final written reports and their evaluation surveys about the project. This article offers a unique perspective on teachers as researchers in a new age of work-based AR with the risk of research by teachers in schools being regarded as part of an uncritical ‘tick box’ performative and celebratory culture. However, the authors argue that teacher research can contribute to a transformational approach to professional development working as an antidote and a source of (re)professionalization based on the outcomes of collaboration, reflection and attention to the singularity of their ‘contexts-for action’ and specific pupils’ needs.