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This paper investigates the potential of the Gamified Metaverse as a platform for promoting library services. The study compares the effectiveness of a traditional library program with a Metaverse- based library program in terms of knowledge acquisition and library anxiety. The research also examines students' perceptions of implementing gamification within the context of the Gamified Metaverse platform. A mixed-methods approach was adopted, including pre- and post-test analysis, statistical analysis, and qualitative data collection. The results indicate that both the traditional and Metaverse-based library programs effectively increased the participants' knowledge, with no significant difference between the two approaches. However, the Metaverse-based program was found to be less effective in facilitating interaction with librarians and reducing library anxiety. Additionally, students expressed positive perceptions of implementing gamification in the Gamified Metaverse platform, finding it engaging and motivating. These findings contribute to the understanding of the effect of the Metaverse as a tool for promoting library services and enhancing knowledge acquisition. However, it is not as effective in reducing library anxiety, particularly in terms of interaction with librarians and staff. It should be noted that the platform may have limitations such as high costs and potential side effects of virtual reality, making it more suitable as an additional tool for promoting library services, taking into account its feasibility and potential benefits for specific student populations and larger libraries. [ABSTRACT FROM AUTHOR]

The measured spatial resolution of augmented reality head‐mounted displays (AR HMDs) is determined by three components: optics, display, and the rendering pipeline, which includes the anti‐aliasing method. Therefore, separating and quantifying the contributions from these components is necessary for evaluating the spatial resolution of AR HMDs. We demonstrate a method for quantifying the contributions from the optical performance and the rendering pipeline on the spatial resolution of AR HMD using point‐spread function (PSF) analysis. In this method, an imaging photometer captures a series of rendered scenes on the AR HMD that consist of arrays of spheres of increasing sizes with different anti‐aliasing (AA) methods. The contributions from the optics, display, and anti‐aliasing methods can be separated, and we find that temporal anti‐aliasing (TAA) and multisample anti‐aliasing (MSAA) are in good agreement with the performance of no AA. However, fast approximate anti‐aliasing (FXAA) results in decreased luminance for smaller rendered targets and a different spatial resolution for larger targets. Finally, we repeated our methods on multiple HMDs and characterized the dependence of the spatial resolution across the field of view. These measurements show significant non‐uniformity in the optical contribution to the spatial resolution. [ABSTRACT FROM AUTHOR]

Digital technologies such as augmented reality (AR) and virtual reality (VR) offer businesses an opportunity to create a competitive advantage by providing a unique customer experience across the customer's pre-purchase, purchase, and post-purchase journey. Several businesses have engaged with these technologies, yet, South African businesses are slow adopters. A qualitative study was conducted with AR and VR developers to determine how businesses can use AR and VR technologies to enhance their customer experience. Additionally, the study aimed to identify the factors contributing to and hindering the adoption of AR and VR technologies. The findings indicate that these technologies are mainly used for (1) marketing and (2) training purposes, enabling product customization, enhanced brand experience, and improved communication. Several factors contributing to adopting these technologies were identified, such as improved marketing campaigns, reduced training risks, reinforcing best practices, identifying and managing potential hazards, and offering simulations of real-life events. The factors that hinder the adoption include high cost, data usage, customer adoption, and lack of high-quality user experience designers. The findings of this study offer several practical contributions to assist businesses in the decision to implement and engage with these technologies. [ABSTRACT FROM AUTHOR]

Terahertz imaging is one of the most promising approaches for non-destructive control. An interesting approach to having cost-effective systems is to use frequency-modulated continuous wave (FMCW) radars with a raster scan configuration. Nevertheless, current systems using linear stages or robotic arms have the disadvantage of being heavy, requiring a long scan and not allowing a direct visualization of the result being measured. In addition, it is complex to evaluate the position of the measuring point on the real object, particularly if it is not flat. Here, we propose to solve these previous challenges with a portable system combining an FMCW radar with an augmented reality (AR) interface using a smartphone. This system achieves two goals: (i) first is to achieve data acquisition in the AR environment and (ii) the second is to make possible the visualization of data, even after post-processing, in the AR environment. [ABSTRACT FROM AUTHOR]

Introduction: Simulation training is an important component of medical education. In former studies, diagnostic simulation training for direct and indirect funduscopy was already proven to be an effective training method. In this prospective controlled trial, we investigated the effect of simulator-based fundus biomicroscopy training. Methods: After completing a 1-week ophthalmology clerkship, medical students at Saarland University Medical Center (n = 30) were block-randomized into two groups: The traditional group received supervised training examining the fundus of classmates using a slit lamp; the simulator group was trained using the Slit Lamp Simulator. All participants had to pass an Objective Structured Clinical Examination (OSCE); two masked ophthalmological faculty trainers graded the students' skills when examining patient's fundus using a slit lamp. A subjective assessment form and post-assessment surveys were obtained. Data were described using median (interquartile range [IQR]). Results: Twenty-five students (n = 14 in the simulator group, n = 11 in the traditional group) (n = 11) were eligible for statistical analysis. Interrater reliability was verified as significant for the overall score as well as for all subtasks (≤ 0.002) except subtask 1 (p = 0.12). The overall performance of medical students in the fundus biomicroscopy OSCE was statistically ranked significantly higher in the simulator group (27.0 [5.25]/28.0 [3.0] vs. 20.0 [7.5]/16.0 [10.0]) by both observers with an interrater reliability of IRR < 0.001 and a significance level of p = 0.003 for observer 1 and p < 0.001 for observer 2. For all subtasks, the scores given to students trained using the simulator were consistently higher than those given to students trained traditionally. The students' post-assessment forms confirmed these results. Students could learn the practical backgrounds of fundus biomicroscopy (p = 0.04), the identification (p < 0.001), and localization (p < 0.001) of pathologies significantly better with the simulator. Conclusions: Traditional supervised methods are well complemented by simulation training. Our data indicate that the simulator helps with first patient contacts and enhances students' capacity to examine the fundus biomicroscopically. [ABSTRACT FROM AUTHOR]

Astronaut training is complex due to its specific infrastructure and equipment requirements, which are often costly. Immersive technologies can simulate entire environments, allowing for interactive user experiences. Previous research has confirmed the effectiveness of immersive technologies in training and learning. However, simulations alone are insufficient; participants must also engage with vehicles, machinery, and spacecraft systems to understand their impact on the environment and adjacent objects. This study develops four scenarios within three modules, inspired by NASA and ESA astronaut training programs. The first module presents a theoretical scenario using mixed reality (MR), incorporating topics from ESA's training modules. The second module offers two practical scenarios: an ISS emergency simulation that includes Hohmann transfer and circular motion concepts, and a spacewalk for repair tasks. In these scenarios, digital twins of the ISS propulsion and navigation systems, as well as a spacesuit, were created. The third module simulates a spacecraft launch, utilizing 3D models from SpaceX's Falcon Heavy and digital twins of its propulsion and navigation systems. Participants interacted with the digital twins and scenarios, generating data that was stored and analyzed against the ISS dataset from the Jet Propulsion Laboratory (JPL) and telemetry from the SpaceX Falcon Heavy launch. In this work's initial phase, the main objective was to assess whether digital twins could be integrated with immersive technologies for effective training. A mean squared error metric was employed to compare the digital twins with the physical object data, confirming the alignment of the developed digital twins with the actual systems, thereby validating their utility for astronaut training. • Mixed reality and digital twins can be used to improve astronaut's training. • Mixed reality scenarios are a safe way to learn and train about a specific topic. • Mixed reality foster training experiences: Promoting creative problem-solving skills. • Digital Twins enhances immersive technologies: Leveraging digital twins capacities for immersive training. [ABSTRACT FROM AUTHOR]

Wine, a product steeped in tradition and history, is often challenging for consumers to decipher due to its intricate characteristics. Appealing to non-wine connoisseurs to break into untapped market segments requires both innovation and creative thinking. To accomplish this, three wine brands utilized augmented reality (AR) technology to craft unique brand storytelling experiences that centered around the label, without focusing on physical product attributes, ultimately resonating with new market segments. This article explores the use cases of three wine brands; 19 Crimes, Barefoot, and Enosophia Wines, that employed AR technology as a form of disruptive rhetoric, to supplement their wine label storytelling. The study sheds light on how multisensory technology such as AR can be used to carve out new wine target markets and proposes an AR experience model with accompanying propositions outlining how the experiential realms can be leveraged to achieve key brand objectives. [ABSTRACT FROM AUTHOR]

'Structural characteristics' are gambling product design features which contribute to the amount of time or money that gamblers spend using them, such as the short pay-out intervals of electronic gaming machines (EGMs). However, it is important to also understand the structural characteristics of current online sports betting products, and how these products may continue to evolve via a forward-looking analysis of utility patents, given the increasing international popularity of this gambling mode. A scoping review of the emergent structural characteristics associated with online sports betting was conducted upon the literature (2015–2022), and of sports betting utility patents. A total of 26 literature records and 8 utility patents were included. Results indicated that online sports betting is instantly accessible, provides rapid and continuous betting opportunities, and offers user-interactivity via features such as 'cash-out' and the ability to instantly deposit funds. Additionally, the online sports betting market has expanded into adjacent industries such as esports. The included utility patents suggest that online sports betting may evolve by incorporating peer-to-peer competitive elements, augmented reality, and highly specific statistics/notifications. Overall, the online environment has transformed sports betting into a faster and more harmful gambling mode that provides a diverse range of features and betting opportunities. It is important that this area of research develops in order to encourage appropriate policy and the more ethical redesign of online sports betting products. [ABSTRACT FROM AUTHOR]

Background: Virtual reality (VR), augmented reality (AR) and mixed reality (MR) have sparked recently in improving the effectiveness of teacher education. However, there is a lack of review regarding the utilisation of these technologies in this field. These three technologies, namely VR, AR and MR, can be collectively referred to as extended reality (XR) (as mentioned in reference Tang et al., 2022). Objectives: Remarkably, the utilisation of XR‐based technologies in teacher education needs to be explored. Moreover, research questions related to the training objectives, methodological features, and the effects of XR‐based teacher education remain unanswered. Methods: To this end, the present study conducted a systematic review to analyse 52 articles from six databases (including Web of Science, Scopus, IEEE Xplore, ERIC, ScienceDirect, and ACM Digital Library). Results: The results indicate that XR technologies have been primarily used to train teachers' procedural knowledge, for instance, classroom management. Furthermore, most studies have primarily focused on pre‐service teachers (PSTs) rather than in‐service teachers and utilised small sample sizes, with VR emerging as the most frequently employed tool. Finally, the majority of the studies reported that XR‐based training affected teachers positively. Conclusions: It urges researchers and developers to consider theory‐driven training design, which increases the potential to better understand what features of XR promote in‐service teachers' and PSTs' learning and how they do so. This article additionally conducts a SWOT (strengths, weaknesses, opportunities, and threats) analysis of XR‐based teacher education to offer more insightful recommendations and foster further discussion. Lay Description: What is already known about this topic: Numerous empirical studies have shown the great potential of virtual reality (VR), augmented reality (AR) and mixed reality (MR) technologies utilised in teacher education.This rapidly growing field calls upon a synthesis of the use of extended reality (XR) technologies in teacher education. What this paper adds: Presents a systematic review of XR‐based teacher education, which provides a thorough overview of how previous research utilised XR technologies to promote teacher education.Conducted a SWOT analysis and pointed out the strengths, weaknesses, opportunities, and threats of XR‐based teacher education. Implications for practice and/or policy: A depth of understanding of previous research on this topic may enable educators to better plan and promote teacher education programs.It can guide researchers to optimise the multisensory immersion and interactivity of the virtual systems and platforms and develop suitable materials and tasks to be used in such learning environments. [ABSTRACT FROM AUTHOR]

Background Augmented reality (AR) and virtual reality (VR)—termed mixed reality—have shown promise in the care of operative patients. Currently, AR and VR have well-known applications for craniofacial surgery, specifically in preoperative planning. However, the application of AR/VR technology to other reconstructive challenges has not been widely adopted. Thus, the purpose of this investigation is to outline the current applications of AR and VR in the operative setting. Methods The literature pertaining to the use of AR/VR technology in the operative setting was examined. Emphasis was placed on the use of mixed reality technology in surgical subspecialities, including plastic surgery, oral and maxillofacial surgery, colorectal surgery, neurosurgery, otolaryngology, neurosurgery, and orthopaedic surgery. Results Presently, mixed reality is widely used in the care of patients requiring complex reconstruction of the craniomaxillofacial skeleton for pre- and intraoperative planning. For upper extremity amputees, there is evidence that VR may be efficacious in the treatment of phantom limb pain. Furthermore, VR has untapped potential as a cost-effective tool for microsurgical education and for training residents on techniques in surgical and nonsurgical aesthetic treatment. There is utility for mixed reality in breast reconstruction for preoperative planning, mapping perforators, and decreasing operative time. VR has well- documented applications in the planning of deep inferior epigastric perforator flaps by creating three-dimensional immersive simulations based on a patient's preoperative computed tomography angiogram. Conclusion The benefits of AR and VR are numerous for both patients and surgeons. VR has been shown to increase surgical precision and decrease operative time. Furthermore, it is effective for patient-specific rehearsal which uses the patient's exact anatomical data to rehearse the procedure before performing it on the actual patient. Taken together, AR/VR technology can improve patient outcomes, decrease operative times, and lower the burden of care on both patients and health care institutions. [ABSTRACT FROM AUTHOR]

Critical incidents are unanticipated events (either positive or negative) that teachers may encounter during a lesson or other situation causing them to reflect on their approach and change accordingly..Critical incidents have great potential for learning as they are vividly remembered and set the conditions for systematic reflection. However, despite the importance of the critical incident technique for professional learning in Initial Teacher Education (ITE), it is not generally used in teacher education programmes until the practicum stage when video-analysis is used. This study aims to analyse student teachers' individual and group reflections regarding two cases recorded on video in Portugal and Spain. Under the context of an Erasmus research project entitled 'Digital Practicum 3.0: Exploring Augmented Reality, Remote Classrooms, and Virtual Learning to enrich and expand preservice teacher education preparation (2020–1-ES01-KA226-HE - 096,120)' two cohorts of 39 and 22 student teachers, respectively, reflected upon two critical incidents previously selected by the student teachers who had taught the two lessons that were video recorded. They had to watch the videos and analyse the incidents both in group discussion and individual reflection. Findings suggest that such a strategy is key to enhancing the development of critical reflection in Initial Teacher Education. [ABSTRACT FROM AUTHOR]

AbstractThe sense of immersion provided by overlying computer-generated graphics over actual items is one of augmented reality’s distinguishing features. It is affected by multiple factors such as the user interface orientation in the virtual physical hybrid space. There have been many studies on realistic graphic rendering and multimodal interaction in augmented reality. Few studies, however, have systematically investigated the influence of the user interface orientations, more specifically the user-based orientation (UO) and object-based orientation (OO), on various aspects of immersion. We developed the UO and OO user interface prototypes and evaluated the sense of immersion in terms of engagement, engrossment, and overall immersion. The results showed that the user interface orientations in augmented reality had a significant influence on users’ perceived engagement and engrossment, whereas there was no significant difference in overall immersion. Particularly, compared to the OO user interfaces, the UO user interfaces exhibited higher perceived usability and slower focus of attention switching. Generalising implications for alternative augmented reality are provided. [ABSTRACT FROM AUTHOR]

This study pioneers the integration of augmented reality (AR) with reality puzzle games to enrich local cultural understanding and enhance the sense of place. By merging AR’s interactive capabilities with the narrative depth of geography, we offer an innovative approach to experiential learning. Our research demonstrates how AR can transform the learning experience, making local history and culture more engaging and memorable for learners. Through an empirical study involving learners engaged in AR-enhanced reality puzzle-solving activities, we found significant improvements in their comprehension of regional historical contexts and emotional connections to the place. This paper not only showcases the potential of AR in educational settings but also contributes to the literature by providing a novel method for fostering deeper connections between people and their local environments. Our findings suggest that AR can serve as a powerful tool in the geography education domain, offering a dynamic and immersive learning experience that traditional methods struggle to match. [ABSTRACT FROM AUTHOR]

Purpose: This systematic review aims to provide an overview of the current knowledge on the role of the metaverse, augmented reality, and virtual reality in reverse shoulder arthroplasty. Methods: A systematic review was performed using the PRISMA guidelines. A comprehensive review of the applications of the metaverse, augmented reality, and virtual reality in in-vivo intraoperative navigation, in the training of orthopedic residents, and in the latest innovations proposed in ex-vivo studies was conducted. Results: A total of 22 articles were included in the review. Data on navigated shoulder arthroplasty was extracted from 14 articles: seven hundred ninety-three patients treated with intraoperative navigated rTSA or aTSA were included. Also, three randomized control trials (RCTs) reported outcomes on a total of fifty-three orthopedics surgical residents and doctors receiving VR-based training for rTSA, which were also included in the review. Three studies reporting the latest VR and AR-based rTSA applications and two proof of concept studies were also included in the review. Conclusions: The metaverse, augmented reality, and virtual reality present immense potential for the future of orthopedic surgery. As these technologies advance, it is crucial to conduct additional research, foster development, and seamlessly integrate them into surgical education to fully harness their capabilities and transform the field. This evolution promises enhanced accuracy, expanded training opportunities, and improved surgical planning capabilities. [ABSTRACT FROM AUTHOR]

Human errors are prevalent in manual assembly line statistics, but humans are still a necessary and numerous working force for assembly tasks. Since faster and shorter production cycles lead to higher mental efforts, an alternative to decrease the cognitive load and errors of manual assembly lines is using augmented reality (AR). AR increases system interaction and assists operators in the step-by-step of any tasks performed. Its use allows granular production data, enabling an increase in quality control and timely detection of assembly problems. However, AR alone is not enough to avoid demotivation and lack of engagement in the task, which is repetitive. Gamification can become an auxiliary resource to increase operators' motivation and engagement. This paper presents a system model to integrate AR and gamification for a manual assembly line of printed circuit boards (PCBs) called GRAAL, used to develop an actual system for PCB assembly, which can guide operators using AR but also tracks down their efficiency and efficacy which is then used for gamifying their performance. A prototype system was implemented and assessed by 34 specialist respondents. TAM 3 (Technology Acceptance Model 3) Questionnaire was used to assess the system, which allowed us to find that GRAAL was well accepted (all scores were above the center of a Likert scale from 1 to 7 values), suggesting that GRAAL may be useful as an auxiliary resource to manual assembly lines. We conclude that modeling a system that merges AR and gamification is feasible but a non-trivial task in industry. The system's features are dependent on conditioning factors such as Application Environment, Application Context, Application Audience, AR hardware, and gamification elements. [ABSTRACT FROM AUTHOR]

Abstract\nPRACTICING POINTSPurpose: Virtual interactive 3-dimensional models (VI3DM) and immersive virtual reality are implemented in medical education and surgical training. VI3DM allow learners to view and interact with a virtual 3D object and help in conceptualising learning objectives that demand high cognitive and visuo-spatial skills. However, the effects of VI3DM in medical education are unknown. We aimed to determine whether VI3DM are helpful in conceptualising complex anatomical structures. Materials and methods: We included 5 specimens, which were assessed by 200 first-year medical students categorised into experimental (n = 100) and control (n = 100) groups using a systemic randomisation method after matching for age and sex. The experimental group was given VI3DM as interventional learning resources while the control group was given 2-dimensional photographs as conventional learning resources for self-directed learning for 30 minutes. Participants completed a questionnaire before and after the learning session to assess their knowledge related to external features, attachments, and relations of anatomical specimens. Results: The scores of the experimental group improved significantly in the post-test compared to those of the control group for all 5 specimens included in the study (p < 0.05, confidence interval = 95%, unpaired student’s t-test). Conclusions: VI3DM can help conceptualise external features, attachments, and relations of anatomical structures.VI3DM allow interaction with and manipulation of 3D images of anatomical specimens on digital screens, web applications, mobile applications, and head mounted devices.Conceptualisation of anatomical structures requires processing of high cognitive and visuo-spatial information which can be eased by VI3DM.The anatomy can be visualised in high quality using digital 3D technology, which results in good perception of the third dimension and effectively increases the post-test score compared to the conventional method of learning, with higher engagement and satisfaction of the learners.Digital 3D models improve learners’ engagement and compliance, specifically when the presented digital 3D models are interactive. [ABSTRACT FROM AUTHOR]

AbstractThe applicability of augmented reality (AR) as a tool for geospatial data analysis and urban environment interaction relies on developing robust and accurate systems capable of aligning the virtual reference frame with the geographic one. In this article, we introduce our work toward the conceptualization and realization of Geographic-Aware Augmented Reality (GeoAR), including an evaluated framework for the automatic registration of georeferenced AR content. The proposed framework uses a novel calibration method that enables highly accurate placement of augmentations at their assigned geographic coordinate. Moreover, it introduces four calibration approaches suitable for different user needs. The framework was evaluated to assess the robustness of the augmentation’s positional accuracy in three areas with different environmental characteristics, using references up to 50 m away while the user moves around. The results demonstrate that this framework supports novel outdoor AR applications, extending the possibilities in research and urban applications. [ABSTRACT FROM AUTHOR]

Simple Summary: Ensuring precise needle placement during biopsy procedures is essential for both successful outcomes and minimizing patient risk. Our study presents a new mixed reality system that helps doctors accurately navigate needles to their intended targets without needing physical markers. By using advanced imaging and computer vision techniques, the system overlays anatomical data directly onto the patient, guiding the needle along a pre-planned path. We tested this system in various ways, including its accuracy and efficiency in needle placement. Our findings showcased a significant improvement, with a reduction in number of punctures needed to reach the target location. The test was successfully completed on the first attempt in 70% of cases, as opposed to only 20% without the system. Additionally, there was a 53% reduction in procedure time, validating the effectiveness of the system. Exact biopsy planning and careful execution of needle injection is crucial to ensure successful procedure completion as initially intended while minimizing the risk of complications. This study introduces a solution aimed at helping the operator navigate to precisely position the needle in a previously planned trajectory utilizing a mixed reality headset. A markerless needle tracking method was developed by integrating deep learning and deterministic computer vision techniques. The system is based on superimposing imaging data onto the patient's body in order to directly perceive the anatomy and determine a path from the selected injection site to the target location. Four types of tests were conducted to assess the system's performance: measuring the accuracy of needle pose estimation, determining the distance between injection sites and designated targets, evaluating the efficiency of material collection, and comparing procedure time and number of punctures required with and without the system. These tests, involving both phantoms and physician participation in the latter two, demonstrated the accuracy and usability of the proposed solution. The results showcased a significant improvement, with a reduction in number of punctures needed to reach the target location. The test was successfully completed on the first attempt in 70% of cases, as opposed to only 20% without the system. Additionally, there was a 53% reduction in procedure time, validating the effectiveness of the system. [ABSTRACT FROM AUTHOR]

Searching for objects is a common task in daily life and work. For augmented reality (AR) devices without spatial perception systems, the image of the object's last appearance serves as a common search assistance. Compared to using only images as visual cues, videos capturing the process of object placement can provide procedural guidance, potentially enhancing users' search efficiency. However, complete video playback capturing the entire object placement process as visual cues can be excessively lengthy, requiring users to invest significant viewing time. To explore whether segmented or accelerated video playback can still assist users in object retrieval tasks effectively, we conducted a user study. The results indicated that when video playback is covering the first appearance of the object's destination to the object's final appearance (referred to as the destination appearance, DA) and playing at normal speed, search time and cognitive load were significantly reduced. Subsequently, we designed a second user study to evaluate the performance of video playback compared to image cues in object retrieval tasks. The results showed that combining the DA playback starting point with images of the object's last appearance further reduced search time and cognitive load. [ABSTRACT FROM AUTHOR]

With the development of augmented reality (AR) technology, AR navigation tools have gradually received increasing attention. Few previous studies have comprehensively discussed the advantages and disadvantages of AR and 2D maps from a spatial cognition perspective. Through three experiments, this article investigated the effects of different AR navigation display methods on wayfinding performance and spatial knowledge acquisition. First, we compared participants' performances in using AR and 2D map navigation aids for wayfinding and spatial knowledge tasks. Second, we developed a combined map and compared the usability of this map with that of an AR map. Then, we applied the focus + context technique to improve the combined map's minimap and verified the improved map's effectiveness by laboratory simulation. The AR map is superior to the 2D map in acquiring spatial knowledge. AR displays are crucial for helping individuals acquire landmark and route knowledge. The improved map expands the range of exocentric spatial information and highlights the landmark locations to provide comprehensive information about the environment; thus, the improved map can further assist in acquiring spatial knowledge. [ABSTRACT FROM AUTHOR]

We present a novel approach to the inclusion of online services within a physical retailing scenario through the use of augmented reality (AR) technology and head-mounted displays (HMD). A concept has been designed for providing the innovative combination of product data, comparison support and product recommendations, all directly accessible from the pertinent physical products. Prototypes were implemented and evaluated in several user studies to address questions related to information acquisition, product exploration and user acceptance, including a comparison against a baseline system (i.e., smartphone app without AR capabilities). The results indicate that providing in-store functions via AR HMDs can be on par with a non-AR smartphone approach in terms of practicality, and may provide superior benefits concerning the discovery and exploration of products, and the perception of their differences. However, effort must be dedicated to design AR UIs able to compete against the clearer and more structured information visualization of traditional displays. [ABSTRACT FROM AUTHOR]

Heuristic evaluation is a famous usability inspection method often used in the assessment of Augmented Reality (AR) systems. Usability heuristics can be characterized as general or specific to a domain. During comparative studies between a new and a traditional set of heuristics, the focus is often around performance metrics (number of problems, time, errors), and little attention is given to the experience itself (i.e., evaluator's overall satisfaction toward utilization of the set of heuristics). In addition, limited research has been done on the application of heuristics to evaluate interfaces with different levels of interaction, along with how a longer set of low-level heuristics compares against a traditionally-sized set of high-level heuristics. In this study, recruited participants (mostly university students) performed a heuristic evaluation using either a set of 110 specific heuristics (SH) or a set of 23 general heuristics (GH) to evaluate two versions of an AR application, designed with a low and a high level of interactivity. Big Five personality traits, prior experience with AR or Virtual Reality systems, and various usability data (e.g., subjective ratings related to the usability of heuristics and AR application, number of unique problems, and severity ratings) were collected through questionnaires and utilized during statistical analysis. Results show that even though the employment of the set of GH produced higher overall satisfaction of evaluators, the set of SH resulted in a significantly larger number of unique usability problems. Furthermore, the more interactive version of the AR application was perceived by evaluators as the harder version to inspect, regardless of the set of heuristics utilized. Neuroticism and agreeableness traits were found with a significant impact on subjective usability ratings. [ABSTRACT FROM AUTHOR]

The study of consciousness has developed well-controlled, rigorous methods for manipulating and measuring consciousness. Yet, in the process, experimental paradigms grew farther away from everyday conscious and unconscious processes, which raises the concern of ecological validity. In this review, we suggest that the field can benefit from adopting a more ecological approach, akin to other fields of cognitive science. There, this approach challenged some existing hypotheses, yielded stronger effects, and enabled new research questions. We argue that such a move is critical for studying consciousness, where experimental paradigms tend to be artificial and small effect sizes are relatively prevalent. We identify three paths for doing so—changing the stimuli and experimental settings, changing the measures, and changing the research questions themselves—and review works that have already started implementing such approaches. While acknowledging the inherent challenges, we call for increasing ecological validity in consciousness studies. In this perspective, Mudrik et al. call for more naturalistic studies of consciousness, given the artificial nature of most experimental manipulations. Despite the entailed challenges, they argue that this will increase ecological validity, generate new questions, and yield stronger effects. [ABSTRACT FROM AUTHOR]

Clustering is a popular data analysis technique that can explore the structure of data through cluster analysis. Similar data are put into the same cluster, while dissimilar data allocate to other clusters. The similarity/dissimilarity among data objects is determined using a distance function. Further, clustering algorithms aim to choose the optimal set of centroids for obtaining better partitioning, but clustering accuracy is always susceptible. This issue of clustering is addressed through meta-heuristic algorithms. This research also aims to handle the accuracy issue and presents a new algorithm for effective cluster analysis. The proposed clustering algorithm is inspired by a water flow optimizer (WFO). The WFO algorithm performance is validated on the well-defined clustering problems based on SSE, accuracy (AR) and detection rate (DR) parameters. The results indicate that the WFO algorithm gets higher clustering results in terms of SSE, AR and DR than the same class of algorithms. The performance is also validated using Friedman statistical test followed by a post hoc test. Results indicated that the proposed WFO gets better statistical results than other clustering algorithms. [ABSTRACT FROM AUTHOR]

This study investigates the impact of integrating Building Information Modeling (BIM) technologies with Virtual and Augmented Reality (VR-AR) in didactic applications within the AECO (Architecture, Engineering, Construction, and Operations) field. To address this gap, a systematic literature review (SLR) analyzed 30 primary studies, providing a comprehensive overview for teachers and researchers interested in a deeper exploration of the area. The results indicate that the educational implementation of BIM VR-AR has garnered the interest of researchers across various contexts and applications, fostering novel forms of communication and representation. Positive outcomes are notable in terms of motivation and spatial cognitive skills development. In this context, avatar mapping and presence in virtual environments are closely linked to immersion, social presence, and cognitive load. However, challenges such as teacher and student training, costs, interoperability, and device usability persist. The emergence of mobile immersive VR technologies shows promise in mitigating some of these barriers, contributing to realizing the didactic potential of these technologies in STEM (Science, Technology, Engineering, and Mathematics) education. [ABSTRACT FROM AUTHOR]

Large-scale furniture production involves complex manufacturing processes and methods. However, Taiwanese schools face limitations in terms of space and equipment, restricting students from engaging in furniture prototype creation or small-batch production. As a result, students often struggle to grasp practical aspects of large-scale furniture production, leading to a partial understanding of manufacturing processes and methods. To bridge this gap, this study introduces Augmented Reality (AR) technology and miniaturized furniture production lines in a school’s woodshop. AR can be used to guide students through miniaturized production stages, emphasizing semi-automated furniture production features. Additionally, Virtual Reality (VR) technology is combined to provide an immersive experience of real-world, large-scale furniture production, allowing students to understand processing scenarios and conditions in facilities of other countries. In an experiment involving 30 first-year students, an experimental group (15 participants) received mixed AR and VR instruction, while a control group (15 participants) received traditional teaching methods. Findings reveal that AR and VR integration enhanced students’ comprehension of differences between the school workship and overseas large-scale furniture production facilities. This strategy improved their furniture production knowledge, and fostered adaptability to various production conditions and methods. [ABSTRACT FROM AUTHOR]

In the quest for more compact and efficient augmented reality (AR) displays, the standard approach often necessitates the use of multiple layers to facilitate a large full‐color field of view (FoV). Here, we delve into the constraints of FoV in single‐layer, full‐color waveguide‐based AR displays, uncovering the critical roles played by the waveguide's refractive index, the exit pupil expansion (EPE) scheme, and the combiner's angular response in dictating these limitations. Through detailed analysis, we introduce an innovative approach, featuring an optimized butterfly EPE scheme coupled with gradient‐pitch polarization volume gratings (PVGs). This novel configuration successfully achieves a theoretical diagonal FoV of 54.06° while maintaining a 16:10 aspect ratio. [ABSTRACT FROM AUTHOR]

A crucial requirement of augmented reality head‐up displays (AR‐HUDs) is continuously adjustable virtual image distance (VID), which allows adaptation to various depths in road environments and thereby avoids visual fatigue. However, usual varifocal components for near‐eye displays are unavailable because AR‐HUDs require the varifocal component's aperture to be larger than 10 cm. This study considers the Alvarez lenses, which change the optical power by in‐plane sliding two freeform lenses. Under the paraxial assumption, classic Alvarez lenses can create a quadratic wavefront profile, but the large aperture and extensive diopter variation range required by AR‐HUDs lead to significant aberrations. Thus, the classic paraxial Alvarez lens design is extended by co‐optimizing Alvarez lenses with high‐order surface profiles and a primary freeform mirror. Therefore, a novel varifocal AR‐HUD containing Alvarez lenses with apertures larger than 15 cm is proposed. The AR‐HUD generates a varifocal plane whose VID can be continuously adjusted between 2.5 and 7.5 m, and another focal plane with a fixed VID at 7.5 m. In addition, merely one display panel is used for compactness. Finally, an AR‐HUD prototype with a reduced volume of 9.8 L was built. The expected varifocal performance and qualified imaging quality were experimentally verified through the field of view, VID, and image sharpness. [ABSTRACT FROM AUTHOR]

Video see‐through (VST) head‐mounted displays (HMDs) reconstruct the physical world using outward‐facing cameras and depth sensors. One of the major challenges for VST HMDs is the geometric distortion of the physical pass‐through content. In this study, we present the experimental setup and metrology for VST geometric distortion measurement on single‐camera and dual‐camera VST HMDs. The VST geometric distortion is compared to the digital distortion by the HMD. Finally, we investigate the impacts of camera misalignment and depth distance on VST geometric distortion without and with angular‐based distortion correction. The results demonstrate that camera misalignment with respect to the eye position is the primary root cause for the distortion. Dual‐camera setup is necessary to minimize the VST geometric distortion by placing the cameras close to the eye positions. Although distortion correction can partially mitigate VST geometric distortion in a 2D plane, it remains a challenge for VST distortion correction at multiple depth distance in the 3D space. The method and findings presented of this study may provide guidelines for evaluation of spatial accuracy on VST HMDs and hardware design. [ABSTRACT FROM AUTHOR]

Purpose: The present study aims to propose a framework elucidating the attributes of mobile augmented reality (AR) shopping apps (i.e., spatial presence, perceived personalization and perceived intrusiveness) and how they translate to downstream consumer-related outcomes (i.e., immersion, psychological ownership and stickiness to the retailer). Design/methodology/approach: By conducting a questionnaire-based survey, 308 responses were collected, and the data were submitted to partial least square structural equation modeling (PLS-SEM) and artificial neural network (ANN) analyses. Findings: A few important findings were generated from the present study. First, attributes of mobile augmented reality shopping apps (i.e., spatial presence, perceived personalization and perceived intrusiveness) influence stickiness to the retailer through immersion and consumer empowerment in serial. Second, immersion positively influences psychological ownership. Third, the optimum stimulation level moderates the relationship between spatial presence and immersion. Lastly, a post-hoc exploratory finding yielded by the multigroup analysis uncovered the moderating effect of gender. Originality/value: This study offers a novel contribution to the smart retail literature by investigating the role of mobile AR shopping apps in predicting consumers' stickiness to the retailer. A holistic framework elucidating the serial mediating effect of immersion and consumer empowerment, and the moderating roles of optimum stimulation level and gender were validated. [ABSTRACT FROM AUTHOR]

Collaboration in extended reality (XR) environments presents complex challenges that revolve around how users perceive the presence, intentions, and actions of their collaborators. This paper delves into the intricate realm of group awareness, focusing specifically on workspace awareness and the innovative visual cues designed to enhance user comprehension. The research begins by identifying a spectrum of collaborative situations drawn from an analysis of XR prototypes in the existing literature. Then, we describe and introduce a novel classification for workspace awareness, along with an exploration of visual cues recently employed in research endeavors. Lastly, we present the key findings and shine a spotlight on promising yet unexplored topics. This work not only serves as a reference for experienced researchers seeking to inform the design of their own collaborative XR applications but also extends a welcoming hand to newcomers in this dynamic field. [ABSTRACT FROM AUTHOR]

Rapid technological advancements have created opportunities for new solutions in various industries, including healthcare. One exciting new direction in this field of innovation is the combination of skin-based technologies and augmented reality (AR). These dermatological devices allow for the continuous and non-invasive measurement of vital signs and biomarkers, enabling the real-time diagnosis of anomalies, which have applications in telemedicine, oncology, dermatology, and early diagnostics. Despite its many potential benefits, there is a substantial information vacuum regarding using flexible photonics in conjunction with augmented reality for medical purposes. This review explores the current state of dermal augmented reality and flexible optics in skin-conforming sensing platforms by examining the obstacles faced thus far, including technical hurdles, demanding clinical validation standards, and problems with user acceptance. Our main areas of interest are skills, chiroptical properties, and health platform applications, such as optogenetic pixels, spectroscopic imagers, and optical biosensors. My skin-enhanced spherical dichroism and powerful spherically polarized light enable thorough physical inspection with these augmented reality devices: diabetic tracking, skin cancer diagnosis, and cardiovascular illness: preventative medicine, namely blood pressure screening. We demonstrate how to accomplish early prevention using case studies and emergency detection. Finally, it addresses real-world obstacles that hinder fully realizing these materials' extraordinary potential in advancing proactive and preventative personalized medicine, including technical constraints, clinical validation gaps, and barriers to widespread adoption. [ABSTRACT FROM AUTHOR]

The concept of augmented reality (AR) has made significant advances in the last two decades. This technology that is used in every field can also be used in preserving and archiving traditional dishes in a digital environment. Therefore, the purpose of this research is to develop an AR supported mobile application and to try to reveal how the application is perceived by making the consumers who eat at traditional restaurants experience the application. In the first phase, a mobile application was developed for this purpose. In the second phase, the qualitative research method was used and the mobile application was tested on 30 customers who eat in traditional restaurants and their reviews about the mobile application are considered. At the end of the study, most of the participants expressed that they liked the application and find it interesting and surprising to see 3d images inside the application. [ABSTRACT FROM AUTHOR]

Introduction: This study aimed to investigate the accuracy of cup position and assess the changes in pelvic tilt during primary total hip arthroplasty (THA) in the lateral decubitus position using a new computed tomography (CT)-based navigation system with augmented reality (AR) technology. Materials and methods: There were 37 cementless THAs performed using a CT-based navigation system with AR technology in the lateral decubitus position and 63 cementless THAs performed using manual implant techniques in the lateral decubitus position in this retrospective study. Postoperative cup radiographic inclination and anteversion were measured using postoperative CT, and the proportion of hips within Lewinnek's safe zone was analyzed and compared between the two groups. The mean absolute values of navigation error were assessed. Intraoperative pelvic tilt angles were also recorded using navigation system. Results: The percentage of cups inside Lewinnek's safe zone was 100% in the navigation group and 35% in the control group (p < 0.001). The mean absolute values of navigation error in inclination and anteversion were 2.9° ± 2.1° and 3.3° ± 2.4°, respectively. The mean abduction angle of the pelvis was 5.1° ± 4.8° after placing the patients in the lateral decubitus position and 4.1° ± 6.0° after cup placement. The mean posterior tilt angle was 6.8° ± 5.1° after placing the patients in the lateral decubitus position and 9.3° ± 5.9° after cup placement. The mean internal rotation angle was 14.8° ± 7.4° after cup placement. There were no correlations between the navigation error in inclination or anteversion and the absolute values of changes of the pelvic tilt angle at any phase. Conclusions: Although progressive pelvic motion occurred in THA in the lateral decubitus position, especially during cup placement, the CT-based navigation system with AR technology improved cup placement accuracy. [ABSTRACT FROM AUTHOR]

Simple Summary: Robot-assisted surgery facilitates the examination and improvement of artificial intelligence (AI) integration in surgical processes through the provision of comprehensive telemetry data and an advanced viewing interface. Machine learning (ML) techniques enhance the feedback on the development of surgical abilities, the efficacy of the surgical operation, surgical guiding, and predicted results. By incorporating tension sensors on the robotic arms and employing augmented reality techniques, the surgical experience can be greatly improved. This enables the continuous monitoring of organ movements in real time, resulting in enhanced precision and accuracy. The integration of artificial intelligence (AI) into robotic surgery is anticipated to have a substantial influence on the education of upcoming surgeons and improve the entire surgical process. Both endeavours strive for ultimate accuracy in order to enhance the quality of surgical care. With the rapid increase in computer processing capacity over the past two decades, machine learning techniques have been applied in many sectors of daily life. Machine learning in therapeutic settings is also gaining popularity. We analysed current studies on machine learning in robotic urologic surgery. We searched PubMed/Medline and Google Scholar up to December 2023. Search terms included "urologic surgery", "artificial intelligence", "machine learning", "neural network", "automation", and "robotic surgery". Automatic preoperative imaging, intraoperative anatomy matching, and bleeding prediction has been a major focus. Early artificial intelligence (AI) therapeutic outcomes are promising. Robot-assisted surgery provides precise telemetry data and a cutting-edge viewing console to analyse and improve AI integration in surgery. Machine learning enhances surgical skill feedback, procedure effectiveness, surgical guidance, and postoperative prediction. Tension-sensors on robotic arms and augmented reality can improve surgery. This provides real-time organ motion monitoring, improving precision and accuracy. As datasets develop and electronic health records are used more and more, these technologies will become more effective and useful. AI in robotic surgery is intended to improve surgical training and experience. Both seek precision to improve surgical care. AI in ''master–slave" robotic surgery offers the detailed, step-by-step examination of autonomous robotic treatments. [ABSTRACT FROM AUTHOR]