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417 Results Found

  • Article
  • Open Access
564 Views
35 Pages

18 November 2025

With the increasing adoption of virtual reality (VR) in research and training applications, reliable stress detection in naturalistic settings remains challenging, particularly when hardware complexity must be minimized. This study presents an enhanc...

  • Article
  • Open Access
3 Citations
1,375 Views
29 Pages

31 March 2025

Achieving high-precision spatiotemporal synchronization is crucial for the implementation of virtual coupling (VC) in railway systems. This paper proposes a moving baseline real-time kinematic (MB-RTK) framework to enhance relative positioning accura...

  • Article
  • Open Access
16 Citations
8,097 Views
14 Pages

Behavioral Activation through Virtual Reality for Depression: A Single Case Experimental Design with Multiple Baselines

  • Desirée Colombo,
  • Carlos Suso-Ribera,
  • Isabel Ortigosa-Beltrán,
  • Javier Fernández-Álvarez,
  • Azucena García-Palacios and
  • Cristina Botella

25 February 2022

Behavioral activation (BA) is a structured psychotherapeutic approach for the treatment of major depressive disorder (MDD), which aims at increasing the engagement in activities that might bring enjoyment and meaning to patients’ lives. Althoug...

  • Article
  • Open Access
5 Citations
2,410 Views
16 Pages

The performance of long baseline (LBL) positioning systems is significantly impacted by the distribution and positional calibration accuracy of underwater acoustic beacon arrays. In previous calibration methods for beacon arrays based on autonomous u...

  • Article
  • Open Access
1 Citations
1,405 Views
25 Pages

A Cross-Track Interferometric Synthetic Aperture 3D Passive Positioning Algorithm

  • Yuan Zhang,
  • Xiangxi Bu,
  • Sheng Guan,
  • Jihao Xin,
  • Zhiyu Jiang,
  • Xuyang Ge,
  • Miaomiao Li,
  • Yanlei Li and
  • Xingdong Liang

6 March 2025

High-precision, robust, and rapid three-dimensional (3D) passive positioning of the radiation source is critical for modern reconnaissance systems. While synthetic aperture technology has advanced 2D passive positioning performance, existing methods...

  • Article
  • Open Access
3 Citations
2,754 Views
14 Pages

30 April 2025

Deep reinforcement learning algorithms have demonstrated significant potential in showcasing robotic capabilities within virtual environments. However, applying DRL for practical robot development in realistic simulators like Webots remains challengi...

  • Article
  • Open Access
1,908 Views
12 Pages

The Effects of an Acute Exposure of Virtual vs. Real Slip and Trip Perturbations on Postural Control

  • Nathan O. Conner,
  • Harish Chander,
  • Hunter Derby,
  • William C. Pannell,
  • Jacob B. Daniels and
  • Adam C. Knight

Background: Current methods of postural control assessments and interventions to improve postural stability and thereby prevent falls often fail to incorporate the hazardous perturbation situations that frequently accompany falls. Virtual environment...

  • Article
  • Open Access
32 Citations
6,894 Views
25 Pages

24 December 2016

A method is introduced for detecting changes from point clouds that avoids registration. For many applications, changes are detected between two scans of the same scene obtained at different times. Traditionally, these scans are aligned to a common c...

  • Article
  • Open Access
14 Citations
4,444 Views
16 Pages

Evaluating Human Movement Coordination During Immersive Walking in a Virtual Crowd

  • Alexandros Koilias,
  • Michael Nelson,
  • Sahana Gubbi,
  • Christos Mousas and
  • Christos-Nikolaos Anagnostopoulos

27 August 2020

This paper describes our investigation on how participants coordinate movement behavior in relation to a virtual crowd that surrounds them while immersed in a virtual environment. The participants were immersed in a virtual metropolitan city and were...

  • Article
  • Open Access
774 Views
14 Pages

25 June 2025

Background: Food insecurity and social isolation among older adults are pressing public health concerns that significantly impact physical and mental health outcomes. The COVID-19 pandemic exacerbated these challenges while forcing innovative adaptat...

  • Article
  • Open Access
6 Citations
6,586 Views
20 Pages

A Low Energy Consumption DOA Estimation Approach for Conformal Array in Ultra-Wideband

  • Liangtian Wan,
  • Lutao Liu,
  • Guangjie Han and
  • Joel J. P. C. Rodrigues

16 December 2013

Most direction-of-arrival (DOA) estimation approaches for conformal array suffer from high computational complexity, which cause high energy loss for the direction finding system. Thus, a low energy consumption DOA estimation algorithm for conformal...

  • Article
  • Open Access
4,449 Views
20 Pages

Evaluation of a Virtual Human in Delivering Relaxation Exercises for Wound Healing and Stress Reduction: A Randomised Controlled Trial

  • Isabella Pickering,
  • Mikaela Law,
  • Kate Loveys,
  • Mark Sagar,
  • Nadine Skoluda,
  • Urs M. Nater and
  • Elizabeth Broadbent

Objective: Relaxation delivered via audiotapes can reduce stress and improve wound healing. Virtual humans are a promising technology to deliver relaxation, but robust research is needed into their effectiveness. This randomised controlled trial inve...

  • Article
  • Open Access
14 Citations
3,819 Views
8 Pages

Purpose: This one-group pretest–posttest, designed within a subject study, looks to compare the effects of an outdoor nature walk (ONW) to those of a virtual nature walk (VRW) on memory and cognitive function. Implications are discussed for edu...

  • Article
  • Open Access
1,411 Views
23 Pages

Monitoring of First Responders Biomedical Data During Training with Innovative Virtual Reality Technologies

  • Lýdie Leová,
  • Martin Molek,
  • Petr Volf,
  • Marek Sokol,
  • Jan Hejda,
  • Zdeněk Hon,
  • Marek Bureš and
  • Patrik Kutilek

Traditional training methods for first responders are often limited by time, resources, and safety constraints, which reduces their consistency and effectiveness. This study focused on two main issues: whether exposure to virtual reality training sce...

  • Article
  • Open Access
23 Citations
5,323 Views
12 Pages

Social isolation, magnified by the restriction of movement order during the COVID-19 pandemic, may lead to negative psychosocial health impacts among community-dwelling older adults. We, therefore, aimed to evaluate recruitment rates, data collection...

  • Article
  • Open Access
30 Citations
8,735 Views
18 Pages

The Effects of Motion Artifacts on Self-Avatar Agency

  • Alexandros Koilias,
  • Christos Mousas and
  • Christos-Nikolaos Anagnostopoulos

One way of achieving self-agency in virtual environments is by using a motion capture system and retargeting user’s motion to the virtual avatar. In this study, we investigated whether the self-agency is affected when motion artifacts appear on top o...

  • Article
  • Open Access
3 Citations
3,407 Views
27 Pages

The need for adaptivity and scalability in telecommunication systems has led to the introduction of a software-based approach to networking, in which network functions are virtualized and implemented in software modules, based on network function vir...

  • Article
  • Open Access
42 Citations
4,558 Views
26 Pages

26 January 2023

Task scheduling in the cloud computing paradigm poses a challenge for researchers as the workloads that come onto cloud platforms are dynamic and heterogeneous. Therefore, scheduling these heterogeneous tasks to the appropriate virtual resources is a...

  • Article
  • Open Access
1,333 Views
14 Pages

Assessment of Spatial Presence Experiences and Symptoms of Cybersickness in Dynamic and Static Virtual Environments

  • Witold Pawełczyk,
  • Konrad Młyńczyk,
  • Marcin Murawski,
  • Anna Rutkowska and
  • Sebastian Rutkowski

12 June 2025

Background/Objectives: Virtual reality (VR) is becoming an increasingly popular therapeutic tool, with immersion being a key component that provides users with a sense of spatial presence in virtual environments. However, comprehensive research is la...

  • Article
  • Open Access
26 Citations
7,690 Views
15 Pages

Effects of Specific Virtual Reality-Based Therapy for the Rehabilitation of the Upper Limb Motor Function Post-Ictus: Randomized Controlled Trial

  • Marta Rodríguez-Hernández,
  • Begoña Polonio-López,
  • Ana-Isabel Corregidor-Sánchez,
  • José L. Martín-Conty,
  • Alicia Mohedano-Moriano and
  • Juan-José Criado-Álvarez

This research analyzed the combined effect of conventional treatment and virtual reality exposure therapy on the motor function of the upper extremities in people with stroke. We designed a randomized controlled trial set in the rehabilitation and ne...

  • Article
  • Open Access
12 Citations
4,668 Views
9 Pages

Improving Humanization Skills through Simulation-Based Computers Using Simulated Nursing Video Consultations

  • Diana Jiménez-Rodríguez,
  • Mercedes Pérez-Heredia,
  • María del Mar Molero Jurado,
  • María del Carmen Pérez-Fuentes and
  • Oscar Arrogante

26 December 2021

During the COVID-19 confinement, we converted our clinical simulation sessions into simulated video consultations. This study aims to evaluate the effects of virtual simulation-based training on developing and cultivating humanization competencies in...

  • Article
  • Open Access
25 Citations
5,732 Views
13 Pages

Background: This study explored the effects of a virtual reality exercise program on overweight middle-aged women. Methods: This randomized controlled trial included women 40–65 years of age with a body mass index (BMI) of 23 kg/m2 or more livi...

  • Protocol
  • Open Access
3,566 Views
11 Pages

The Streaming Web-Based Exercise at Home Study for Breast and Prostate Cancer Survivors: A Feasibility Study Protocol

  • Celina H. Shirazipour,
  • Rachel M. Ruggieri-Bacani,
  • Laura Lockshon,
  • Christopher Waring,
  • Aubrey Jarman,
  • Novalyn Cruz,
  • Catherine Bresee,
  • Angela J. Fong,
  • Pao-Hwa Lin and
  • Gillian Gresham
  • + 2 authors

Background: Despite the known benefits of physical activity in cancer survivors, adherence to exercise guidelines remains low. Known barriers to adhering to guidelines include a lack of time and an unwillingness to return to treatment facilities. Vir...

  • Article
  • Open Access
42 Citations
8,778 Views
15 Pages

Virtual exercise therapy is considered a useful method by which to encourage patients with generalized anxiety disorder (GAD) to engage in aerobic exercise in order to reduce stress. This study was intended to explore the psychological and physiologi...

  • Article
  • Open Access
2,842 Views
15 Pages

27 December 2023

In the last decade, many neural network algorithms have been proposed to solve depth reconstruction. Our focus is on reconstruction from images captured by multi-camera arrays which are a grid of vertically and horizontally aligned cameras that are u...

  • Article
  • Open Access
4 Citations
3,137 Views
12 Pages

Validation of Quantitative Flow Ratio-Derived Virtual Angioplasty with Post-Angioplasty Fractional Flow Reserve—The QIMERA-I Study

  • Ignacio J. Amat-Santos,
  • Giorgio Marengo,
  • Juan Pablo Sánchez-Luna,
  • Carlos Cortés Villar,
  • Fernando Rivero Crespo,
  • Víctor Alfonso Jiménez Díaz,
  • José María de la Torre Hernández,
  • Armando Pérez de Prado,
  • Manel Sabaté and
  • Ramón López-Palop
  • + 8 authors

Background: Quantitative flow ratio (QFR) virtual angioplasty with pre-PCI residual QFR showed better results compared with an angiographic approach to assess post-PCI functional results. However, correlation with pre-PCI residual QFR and post-PCI fr...

  • Protocol
  • Open Access
2 Citations
6,324 Views
15 Pages

Mindfulness in Pregnancy and Postpartum: Protocol of a Pilot Randomized Trial of Virtually Delivered Mindfulness-Based Cognitive Therapy to Promote Well-Being during the Perinatal Period

  • Shannon D. Donofry,
  • Dayna Winograd,
  • Diva Kothari,
  • Christine C. Call,
  • Kelsey E. Magee,
  • Riley J. Jouppi,
  • Rachel P. Kolko Conlon and
  • Michele D. Levine

Background: During the period from pregnancy through the first year postpartum, vulnerable individuals are at elevated risk for the onset or worsening of psychological distress, and accessible (e.g., virtually delivered) mental health interventions a...

  • Article
  • Open Access
11 Citations
4,214 Views
12 Pages

The Effect of UV Illumination on the Room Temperature Detection of Vaporized Ammonium Nitrate by a ZnO Coated Nanospring-Based Sensor

  • Lyndon D. Bastatas,
  • Phadindra Wagle,
  • Elena Echeverria,
  • Aaron J. Austin and
  • David N. McIlroy

18 January 2019

The effect of UV illumination on the room temperature electrical detection of ammonium nitrate vapor was examined. The sensor consists of a self-assembled ensemble of silica nanosprings coated with zinc oxide. UV illumination mitigates the baseline d...

  • Article
  • Open Access
7 Citations
3,220 Views
21 Pages

Piloting the Virtual PLAYshop Program: A Parent-Focused Physical Literacy Intervention for Early Childhood

  • Yeongho Hwang,
  • Madison Boyd,
  • Patti-Jean Naylor,
  • Ryan E. Rhodes,
  • Sam Liu,
  • Ramiah Moldenhauer,
  • Joshua Li,
  • Chris Wright,
  • E. Jean Buckler and
  • Valerie Carson

13 April 2023

The PLAYshop program is a parent-focused physical literacy intervention for early childhood. This single-group mixed-methods pilot study aimed to explore the feasibility of virtually delivering and assessing the PLAYshop program. The virtual PLAYshop...

  • Article
  • Open Access
1 Citations
2,431 Views
16 Pages

Evaluation of a Virtual Tai Chi Program for Older Veterans at Risk of Loneliness or Physical Deconditioning: A Quality Improvement Project

  • Bonnie D. Dawson,
  • Hallie E. Keller,
  • Linda M. Sawyer,
  • Shannon Gorman,
  • Jerome A. Sabangan,
  • Adam McPartlin,
  • Sarah Payne,
  • Karl J. Brown,
  • Gail Li and
  • Dennis H. Sullivan

This Quality Improvement project evaluated the implementation of a virtual Tai Chi program for older Veterans (OVs) at risk of loneliness and/or physical deconditioning. A 12-week Tai Chi course was conducted virtually at three Veterans Affairs sites...

  • Article
  • Open Access
19 Citations
7,028 Views
19 Pages

Linear Regression vs. Deep Learning: A Simple Yet Effective Baseline for Human Body Measurement

  • Kristijan Bartol,
  • David Bojanić,
  • Tomislav Petković,
  • Stanislav Peharec and
  • Tomislav Pribanić

28 February 2022

We propose a linear regression model for the estimation of human body measurements. The input to the model only consists of the information that a person can self-estimate, such as height and weight. We evaluate our model against the state-of-the-art...

  • Article
  • Open Access
1,586 Views
12 Pages

11 December 2024

Three-dimensional object detection is a key task in the field of autonomous driving that is aimed at identifying the position and category of objects in the scene. Due to the 3D nature of data generated by LiDAR, most models use it as input data for...

  • Case Report
  • Open Access
16 Citations
8,587 Views
6 Pages

11 May 2021

A case of an adult with anisometropic amblyopia who underwent a successful vision therapy program playing videogames in a virtual reality environment is described, reporting changes in conventional visual clinical data, as well as in brain activity....

  • Article
  • Open Access
7 Citations
3,143 Views
13 Pages

22 November 2021

The number of consumers playing virtual reality games is booming. To speed up product iteration, the user experience team needs to collect and analyze unsatisfying experiences in time. In this paper, we aim to detect the unsatisfying experiences hidd...

  • Article
  • Open Access
5 Citations
3,026 Views
12 Pages

11 November 2022

Visual field loss is a debilitating impairment that can impact normal daily activities. The advancement of augmented and virtual realities brings opportunities for potential substitutive technologies for visual field loss. Here we outline a conceptua...

  • Article
  • Open Access
6 Citations
2,934 Views
19 Pages

Estimating Travel Time for Autonomous Mobile Robots through Long Short-Term Memory

  • Alexandru Matei,
  • Stefan-Alexandru Precup,
  • Dragos Circa,
  • Arpad Gellert and
  • Constantin-Bala Zamfirescu

4 April 2023

Autonomous mobile robots (AMRs) are gaining popularity in various applications such as logistics, manufacturing, and healthcare. One of the key challenges in deploying AMR is estimating their travel time accurately, which is crucial for efficient ope...

  • Article
  • Open Access
11 Citations
4,323 Views
14 Pages

This study examines the effect of baseline length on accuracy and precision in Network Real-Time Kinematic (NRTK) positioning and develops an experimental mathematical model to express this effect. The study also measures the performances of the Flae...

  • Article
  • Open Access
2 Citations
4,736 Views
24 Pages

1 May 2023

The benefits of animal-assisted interventions (AAI) involving animals in therapy are widely accepted. The presence of animals in therapy can decrease a patient’s reservation about therapy and promote a sense of comfort and rapport during the th...

  • Article
  • Open Access
15 Citations
5,454 Views
16 Pages

Intersection Intelligence: Supporting Urban Platooning with Virtual Traffic Lights over Virtualized Intersection-Based Routing

  • José Víctor Saiáns-Vázquez,
  • Esteban Fernando Ordóñez-Morales,
  • Martín López-Nores,
  • Yolanda Blanco-Fernández,
  • Jack Fernando Bravo-Torres,
  • José Juan Pazos-Arias,
  • Alberto Gil-Solla and
  • Manuel Ramos-Cabrer

20 November 2018

The advent of the autonomous car is paving the road to the realization of ideas that will help optimize traffic flows, increase safety and reduce fuel consumption, among other advantages. We present one proposal to bring together Virtual Traffics Lig...

  • Article
  • Open Access
3 Citations
2,700 Views
14 Pages

Mobile-Based 3D Modeling: An In-Depth Evaluation for the Application in Indoor Scenarios

  • Martin De Pellegrini,
  • Lorenzo Orlandi,
  • Daniele Sevegnani and
  • Nicola Conci

29 August 2021

Indoor environment modeling has become a relevant topic in several application fields, including augmented, virtual, and extended reality. With the digital transformation, many industries have investigated two possibilities: generating detailed model...

  • Article
  • Open Access
2 Citations
3,403 Views
26 Pages

Usability Analysis of a Virtual Reality Exposure Therapy Serious Game for Blood Phobia Treatment: Phobos

  • João Petersen,
  • Vítor Carvalho,
  • João Tiago Oliveira and
  • Eva Oliveira

Phobias are characterized as the excessive or irrational fear of an object or situation, and specific phobias affect about 10% of the world population. Blood-injection-injury phobia is a specific phobia that has a unique physical response to phobic s...

  • Article
  • Open Access
1 Citations
2,481 Views
10 Pages

Virtually Wall-Less versus Standard Thin-Wall Venous Cannula in the Minimally Invasive Mitral Valve Surgery: Single-Center Experience

  • Fabrizio Ceresa,
  • Liborio Francesco Mammana,
  • Aurora Leonardi,
  • Augusto Palermo and
  • Francesco Patanè

29 June 2023

Background and Objectives: Minimally invasive cardiac surgery (MICS) has been developing since 1996. Peripheral cannulation is required to perform MICS, and good venous drainage and a bloodless field are crucial for the success of this procedure. We...

  • Article
  • Open Access
2 Citations
2,219 Views
16 Pages

Usability and Feasibility Testing of an Atrial Fibrillation Educational Website with Patients Referred to an Atrial Fibrillation Specialty Clinic

  • Kathy L. Rush,
  • Lindsay Burton,
  • Cherisse L. Seaton,
  • Peter Loewen,
  • Brian P. O’Connor,
  • Kendra Corman,
  • Robyn Phillips,
  • Lana Moroz and
  • Jason G. Andrade

Background: The purpose of this study was to design, usability test, and explore the feasibility of a web-based educational platform/intervention for patients with atrial fibrillation (AF) as part of their virtual AF care. Methods: Participants were...

  • Article
  • Open Access
1 Citations
2,982 Views
21 Pages

Resistance Training in Women Diagnosed with Breast Cancer: A Pilot Single Arm Pre–Post Intervention

  • Madison F. Vani,
  • Maryam Marashi,
  • Erin K. O’Loughlin,
  • Jenna Smith-Turchyn and
  • Catherine M. Sabiston

12 August 2024

Background: Resistance training (RT) yields physical and psychological benefits for women living with and beyond breast cancer (WBC). This study examined the feasibility of a virtually delivered 8-week socially supportive RT intervention among WBC an...

  • Article
  • Open Access
2 Citations
4,277 Views
10 Pages

Neurocognitive Effects of an Online Brain Health Program and Weekly Telehealth Support Group in Older Adults with Subjective Memory Loss: A Pilot Study

  • Ryan M. Glatt,
  • Amylee Amos,
  • David A. Merrill,
  • John F. Hodes,
  • Claudia L. Wong,
  • Karen J. Miller and
  • Prabha Siddarth

Introduction: Adopting healthy lifestyle behaviors has the potential to slow cognitive decline in older adults by reducing risks associated with dementia. Curriculum-based group health coaching may aid in establishing behavior change centered for dem...

  • Article
  • Open Access
23 Citations
8,428 Views
10 Pages

Stress and lack of quality sleep affect a large portion of the population around the globe, and the COVID-19 pandemic has genuinely brought attention to these problems. This study aimed to investigate whether using a virtual heart-based meditation pr...

  • Review
  • Open Access
16 Citations
7,041 Views
22 Pages

6 May 2020

The emerging 5G applications and the connectivity of billions of devices have driven the investigation of multi-domain heterogeneous converged optical networks. To support emerging applications with their diverse quality of service requirements, netw...

  • Article
  • Open Access
9 Citations
4,581 Views
12 Pages

Background: This study is a preliminary study to examine the effect of a virtual reality exercise program (VREP) on type 2 diabetes patients. Method: This is a randomized controlled trial for patients with type 2 diabetes (glycated hemoglobin ≥ 6....

  • Article
  • Open Access
2 Citations
2,295 Views
16 Pages

13 June 2023

This article proposes a fault ride through (FRT) technique for a high-order virtual synchronous generator (VSG) that adjusts its virtual armature resistance. When a fault is detected by a dedicated algorithm, the proposed control adjusts the resistan...

  • Article
  • Open Access
20 Citations
8,376 Views
11 Pages

The Water Footprint of European Agricultural Imports: Hotspots in the Context of Water Scarcity

  • Iulia Dolganova,
  • Natalia Mikosch,
  • Markus Berger,
  • Montserrat Núñez,
  • Andrea Müller-Frank and
  • Matthias Finkbeiner

This study investigates the Water Footprint (WF) resulting from the agricultural imports of the European Union (EU-28). Import trade statistics were compiled and linked with crop- and country-specific water consumption data and water scarcity factors...

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