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1,472 Results Found

  • Article
  • Open Access
16 Citations
3,291 Views
18 Pages

9 July 2024

With the rapid development of the Internet of Things (IoT), the positioning accuracy requirement of the IoT is increasing, especially for those applications without Global Navigation Satellite System (GNSS) signals. Ultra-Wideband (UWB) is treated as...

(This article belongs to the Section Environmental Remote Sensing)
  • Article
  • Open Access
3 Citations
3,535 Views
15 Pages

29 August 2023

With the advent of smart mobile devices, end users get used to transmitting and storing their individual privacy in them, which, however, has aroused prominent security concerns inevitably. In recent years, numerous researchers have primarily propose...

(This article belongs to the Special Issue Computational and Mathematical Methods in Information Science and Engineering, 2nd Edition)
  • Article
  • Open Access
7 Citations
5,423 Views
23 Pages

24 June 2019

“Education Cloud” is a cloud-computing application used in educational contexts to facilitate the use of comprehensive digital technologies and establish data-based learning environments. The immense amount of digital resources, data, and...

(This article belongs to the Section Physical Sensors)
  • Article
  • Open Access
4 Citations
4,011 Views
21 Pages

Applications of virtual reality (VR) have grown in significance in medicine, as they are able to recreate real-life scenarios in 3D while posing reduced risks to patients. However, there are several interaction challenges to overcome when moving from...

  • Article
  • Open Access
1 Citations
1,550 Views
13 Pages

23 August 2024

This study presents a framework for enabling autonomous pick–place operations, addressing the need for efficiency in complex logistics environments using a direct multi-target teaching interface. First, tag and segmentation information were com...

(This article belongs to the Section Intelligent Sensors)
  • Article
  • Open Access
1 Citations
1,517 Views
18 Pages

Optimization of Transmission Power in a 3D UAV-Enabled Communication System

  • Jorge Carvajal-Rodríguez,
  • David Vega-Sánchez,
  • Christian Tipantuña,
  • Luis Felipe Urquiza,
  • Felipe Grijalva and
  • Xavier Hesselbach

10 July 2025

Unmanned Aerial Vehicles (UAVs) are increasingly used in the new generation of communication systems. They serve as access points, base stations, relays, and gateways to extend network coverage, enhance connectivity, or offer communications services...

(This article belongs to the Section Drone Communications)
  • Article
  • Open Access
28 Citations
10,272 Views
20 Pages

Immersive Virtual-Reality System for Aircraft Maintenance Education: A Case Study

  • Águeda Gómez-Cambronero,
  • Ignacio Miralles,
  • Anna Tonda and
  • Inmaculada Remolar

18 April 2023

Aircraft maintenance is a highly relevant procedure in many industries, yet obtaining qualified personnel to carry it out is a difficult task. Training in such techniques is complex and requires access to facilities and materials that are not readily...

(This article belongs to the Special Issue Virtual Reality Technology and Applications)
  • Article
  • Open Access
6 Citations
5,848 Views
14 Pages

In recent years, extended reality (XR) technologies have been increasingly used as a research tool in behavioral studies. They allow experimenters to conduct user studies in simulated environments that are both controllable and reproducible across pa...

(This article belongs to the Special Issue Networked Virtual Reality, Mixed Reality and Augmented Reality Systems)
  • Article
  • Open Access
13 Citations
3,180 Views
21 Pages

In recent decades, the everyday working environment has increasingly shifted into the digital realm. Accordingly, the assessment of human working performance has become strongly influenced by the level, frequency, and mode of interaction with the dig...

(This article belongs to the Special Issue Human-Computer Interaction: Current Opportunities and Future Challenges)
  • Article
  • Open Access
14 Citations
4,414 Views
17 Pages

Deep Learning-Based Link Quality Estimation for RIS-Assisted UAV-Enabled Wireless Communications System

  • Belayneh Abebe Tesfaw,
  • Rong-Terng Juang,
  • Li-Chia Tai,
  • Hsin-Piao Lin,
  • Getaneh Berie Tarekegn and
  • Kabore Wendenda Nathanael

23 September 2023

In recent years, unmanned aerial vehicles (UAVs) have become a valuable platform for many applications, including communication networks. UAV-enabled wireless communication faces challenges in complex urban and dynamic environments. UAVs can suffer f...

(This article belongs to the Special Issue Advances in Future Communication System)
  • Article
  • Open Access
1 Citations
1,141 Views
18 Pages

From Clinic to Reality: Integrating Sound Field Testing and Hearing Quality Measures in Cochlear Implant Users

  • Marta Álvarez-Cendrero,
  • Manuel Lazo-Maestre,
  • Serafín Sánchez-Gómez and
  • María A. Callejón-Leblic

27 November 2025

Background: Traditional audiological assessment often does not properly reflect the challenges experienced by cochlear implant (CI) users in complex listening environments. Deficits in speech recognition and sound localization ability persist despite...

(This article belongs to the Section Otolaryngology)
  • Article
  • Open Access
16 Citations
17,496 Views
28 Pages

CARLA+: An Evolution of the CARLA Simulator for Complex Environment Using a Probabilistic Graphical Model

  • Sumbal Malik,
  • Manzoor Ahmed Khan,
  • Aadam,
  • Hesham El-Sayed,
  • Farkhund Iqbal,
  • Jalal Khan and
  • Obaid Ullah

7 February 2023

In an urban and uncontrolled environment, the presence of mixed traffic of autonomous vehicles, classical vehicles, vulnerable road users, e.g., pedestrians, and unprecedented dynamic events makes it challenging for the classical autonomous vehicle t...

  • Article
  • Open Access
5 Citations
4,035 Views
26 Pages

30 November 2022

The study examines the cumulative impact of factors that affect usability testing for user-centered web design, namely the so-called ‘contextual fidelity model’ factors that include product properties, task features, user traits, and envi...

(This article belongs to the Special Issue Advances and Perspectives in Human-Computer Interaction)
  • Article
  • Open Access
13 Citations
3,123 Views
20 Pages

14 February 2025

To address the resource allocation problem in dynamic environments where multiple unmanned aerial vehicle base stations (UAV-BSs) provide efficient downlink services to ground users, this paper proposes a novel hierarchical decision-making mechanism...

(This article belongs to the Special Issue Applied Cryptography and Practical Cryptoanalysis for Web 3.0)
  • Article
  • Open Access
19 Citations
5,566 Views
16 Pages

Towards a Comprehensive and Robust Micromanipulation System with Force-Sensing and VR Capabilities

  • Georges Adam,
  • Subramanian Chidambaram,
  • Sai Swarup Reddy,
  • Karthik Ramani and
  • David J. Cappelleri

30 June 2021

In this modern world, with the increase of complexity of many technologies, especially in the micro and nanoscale, the field of robotic manipulation has tremendously grown. Microrobots and other complex microscale systems are often to laborious to fa...

(This article belongs to the Special Issue Robotic Micromanipulation, Volume II)
  • Article
  • Open Access
2 Citations
3,026 Views
19 Pages

Multiscale virtual environments (MSVEs) allow the integration of elements and environments at different scale levels into a unified space, which facilitates researchers’ perception, understanding, and experimental research of complex geospatial...

  • Article
  • Open Access
47 Citations
6,110 Views
20 Pages

Optimized CNNs to Indoor Localization through BLE Sensors Using Improved PSO

  • Danshi Sun,
  • Erhu Wei,
  • Zhuoxi Ma,
  • Chenxi Wu and
  • Shiyi Xu

12 March 2021

Indoor navigation has attracted commercial developers and researchers in the last few decades. The development of localization tools, methods and frameworks enables current communication services and applications to be optimized by incorporating loca...

(This article belongs to the Special Issue Smart Sensors, Big Data Analytics and Modelling in Healthcare and Personalized Medical Applications)
  • Article
  • Open Access
2 Citations
5,783 Views
17 Pages

Offline System for 2D Indoor Navigation Utilizing Advanced Data Structures

  • Jorge Luis Veloz,
  • Leo Sebastián Intriago,
  • Jean Carlos Palma,
  • Andrea Katherine Alcívar-Cedeño,
  • Álvaro Antón-Sacho,
  • Pablo Fernández-Arias,
  • Edwan Anderson Ariza and
  • Diego Vergara

This study introduces a robust offline system for 2D indoor navigation, developed to address common challenges such as complex layouts and connectivity constraints in diverse environments. The system leverages advanced spatial modeling techniques to...

(This article belongs to the Section Human-Computer Interaction)
  • Article
  • Open Access
41 Citations
3,576 Views
22 Pages

28 June 2022

The rapid development of Cloud Computing (CC) has led to the release of many services in the cloud environment. Service composition awareness of Quality of Service (QoS) is a significant challenge in CC. A single service in the cloud environment cann...

(This article belongs to the Section Intelligent Sensors)
  • Feature Paper
  • Article
  • Open Access
32 Citations
9,892 Views
16 Pages

2 August 2017

In the complex environment of the IoT (Internet of Things), the amount of information available is enormous and the number of users also increases at a blistering pace. With a huge number of users, e-commerce marketing strategies in the IoT become ex...

(This article belongs to the Special Issue Information Technology and Its Applications)
  • Article
  • Open Access
3 Citations
2,349 Views
20 Pages

18 September 2024

Background and objectives: The urban underground complex integrates comprehensive architecture and subterranean space, presenting physical and psychological complexities. To mitigate the negative experiences associated with this complexity, we need t...

(This article belongs to the Special Issue Human-Centric Space Design: Occupant Comfort, Wellbeing, and Post-occupancy Evaluation of Multi-Scale Built Environment)
  • Article
  • Open Access
9 Citations
2,448 Views
11 Pages

Towards the Emergence of the Medical Metaverse: A Pilot Study on Shared Virtual Reality for Orthognathic–Surgical Planning

  • Jari Kangas,
  • Jorma Järnstedt,
  • Kimmo Ronkainen,
  • John Mäkelä,
  • Helena Mehtonen,
  • Pertti Huuskonen and
  • Roope Raisamo

25 January 2024

Three-dimensional (3D) medical images are used for diagnosis and in surgical operation planning. Computer-assisted surgical simulations (CASS) are essential for complex surgical procedures that are often performed in an interdisciplinary manner. Trad...

(This article belongs to the Special Issue Advanced Virtual, Augmented, and Mixed Reality: Immersive Applications and Innovative Techniques)
  • Feature Paper
  • Article
  • Open Access
2 Citations
3,762 Views
10 Pages

In this article, a computationally-efficient approach is presented for Bit Error Rate (BER) calculations in multi-user Multiple Input Multiple Output (MIMO) frequency selective fading environments, operating in spatial multiplexing transmission mode....

(This article belongs to the Section Microwave and Wireless Communications)
  • Article
  • Open Access
19 Citations
4,245 Views
14 Pages

11 March 2021

In this paper, we address the application of the flying Drone Base Stations (DBS) in order to improve the network performance. Given the high degrees of freedom of a DBS, it can change its position and adapt its trajectory according to the users move...

(This article belongs to the Special Issue UAV-Based Wireless Sensor Networks Systems: Research, Technologies, and Applications)
  • Article
  • Open Access
14 Citations
4,752 Views
26 Pages

28 May 2024

In complex environments, users frequently need to manage multiple tasks simultaneously, which poses significant challenges for user interface design. For instance, when driving, users must maintain continuous visual attention on the road ahead while...

(This article belongs to the Special Issue Human–Computer Interaction and Virtual Environments)
  • Article
  • Open Access
802 Views
22 Pages

25 March 2026

Pinching-antenna systems (PASSs) offer a low-complexity and reconfigurable solution for near-field downlink communications by deploying multiple radiating elements along a single waveguide. Existing studies mainly assume simplified propagation condit...

(This article belongs to the Special Issue 6G Communication and Edge Intelligence in Wireless Sensor Networks)
  • Review
  • Open Access
3 Citations
9,084 Views
23 Pages

21 January 2026

User Interface (UI) and User Experience (UX) design play a critical role in shaping human interaction with digital systems, particularly in professional environments where accuracy, safety, and efficiency are essential. Poor visual design increases c...

(This article belongs to the Special Issue Mixture of Human and Machine Intelligence in Digital Manufacturing, 2nd Edition)
  • Article
  • Open Access
1 Citations
2,497 Views
15 Pages

Smartphone-Based Seamless Scene and Object Recognition for Visually Impaired Persons

  • Fisilmi Azizah Rahman,
  • Ferina Ayu Pusparani,
  • Wen Liang Yeoh and
  • Osamu Fukuda

17 September 2025

This study introduces a mobile application designed to assist visually impaired persons (VIPs) in navigating complex environments, such as supermarkets. Recent assistive tools often identify objects in isolation without providing contextual awareness...

  • Article
  • Open Access
4 Citations
2,306 Views
16 Pages

Targeting the issues of slow speed and inadequate precision of optimal solution calculation for multi-user detection in complex noise environments, this paper proposes a multi-user detection algorithm based on a Hybrid Cheetah Optimizer (HCO). The al...

(This article belongs to the Section Circuit and Signal Processing)
  • Article
  • Open Access
51 Citations
9,065 Views
18 Pages

Framework for Virtual Cognitive Experiment in Virtual Geographic Environments

  • Fan Zhang,
  • Mingyuan Hu,
  • Weitao Che,
  • Hui Lin and
  • Chaoyang Fang

Virtual Geographic Environment Cognition is the attempt to understand the human cognition of surface features, geographic processes, and human behaviour, as well as their relationships in the real world. From the perspective of human cognition behavi...

(This article belongs to the Special Issue State-of-the-Art Virtual/Augmented Reality and 3D Modeling Techniques for Virtual Urban Geographic Experiments)
  • Article
  • Open Access
4 Citations
3,467 Views
13 Pages

Water Allocation, Return Flows, and Economic Value in Water-Scarce Environments: Results from a Coupled Natural-Human System Model

  • Cameron Wobus,
  • Eric Small,
  • Jared C. Carbone,
  • Parthkumar Modi,
  • Hannah Kamen,
  • William Szafranski and
  • Ben Livneh

18 October 2022

In many parts of the world including the western United States, the allocation of water is governed by complex water laws that dictate who receives water, how much they receive, and when. Because these rules are generally based on the seniority of wa...

(This article belongs to the Section Water Resources Management, Policy and Governance)
  • Article
  • Open Access
22 Citations
6,301 Views
22 Pages

Virtual Reality-Based Interface for Advanced Assisted Mobile Robot Teleoperation

  • J. Ernesto Solanes,
  • Adolfo Muñoz,
  • Luis Gracia and
  • Josep Tornero

15 June 2022

This work proposes a new interface for the teleoperation of mobile robots based on virtual reality that allows a natural and intuitive interaction and cooperation between the human and the robot, which is useful for many situations, such as inspectio...

(This article belongs to the Special Issue Trajectory Analysis, Positioning and Control of Mobile Robots)
  • Article
  • Open Access
31 Citations
5,532 Views
24 Pages

Usability Heuristics for Metaverse

  • Khalil Omar,
  • Hussam Fakhouri,
  • Jamal Zraqou and
  • Jorge Marx Gómez

6 September 2024

The inclusion of usability heuristics into the metaverse is aimed at solving the unique issues raised by virtual reality (VR), augmented reality (AR), and mixed reality (MR) environments. This research points out the usability challenges of metaverse...

  • Article
  • Open Access
13 Citations
8,529 Views
19 Pages

DARGS: Dynamic AR Guiding System for Indoor Environments

  • Georg Gerstweiler,
  • Karl Platzer and
  • Hannes Kaufmann

28 December 2017

Complex public buildings, such as airports, use various systems to guide people to a certain destination. Such approaches are usually implemented by showing a floor plan that has guiding signs or color coded lines on the floor. With a technology that...

(This article belongs to the Special Issue Advances in Mobile Augmented Reality)
  • Article
  • Open Access
16 Citations
8,873 Views
38 Pages

The integration of artificial intelligence into daily life significantly enhances the autonomy and quality of life of visually impaired individuals. This paper introduces the Visual Impairment Spatial Awareness (VISA) system, designed to holistically...

(This article belongs to the Special Issue Image and Video Processing for Blind and Visually Impaired)
  • Article
  • Open Access
1 Citations
4,778 Views
24 Pages

Integrating Graph Retrieval-Augmented Generation into Prescriptive Recommender Systems

  • Marvin Niederhaus,
  • Nico Migenda,
  • Julian Weller,
  • Martin Kohlhase and
  • Wolfram Schenck

Making time-critical decisions with serious consequences is a daily aspect of work environments. To support the process of finding optimal actions, data-driven approaches are increasingly being used. The most advanced form of data-driven analytics is...

  • Article
  • Open Access
3 Citations
1,704 Views
17 Pages

9 September 2025

With recent advancements in digital environments, user authentication is becoming increasingly important. Traditional authentication methods such as passwords and PINs suffer from inherent limitations, including vulnerability to theft, guessing, and...

(This article belongs to the Section Artificial Intelligence)
  • Article
  • Open Access
2,760 Views
16 Pages

Practice and Research Optimization Environment in Python (PyPROE)

  • Christopher Jaus,
  • Kaelyn Haynie,
  • Michael Mulligan and
  • Howie Fang

8 February 2025

Practice and Research Optimization Environment in Python (PyPROE) is a GUI-based, integrated framework designed to improve the user experience in both learning and research on engineering design optimization. Traditional optimization programs require...

(This article belongs to the Special Issue Best Practices, Challenges and Opportunities in Software Engineering)
  • Article
  • Open Access
3 Citations
2,662 Views
10 Pages

17 September 2020

Because the Internet of things (IoT) and fog computing are prevalent, an efficient resource consolidation scheme in nanoscale computing environments is urgently needed. In nanoscale environments, a great many small devices collaborate to achieve a pr...

(This article belongs to the Special Issue Software Approaches to Improve the Performance of IoT Systems)
  • Article
  • Open Access
1 Citations
618 Views
40 Pages

17 June 2026

Department store interiors are complex public interior environments in which circulation, wayfinding, visual perception, sensory comfort, and staff interaction operate simultaneously. Although accessibility is increasingly discussed in built environm...

(This article belongs to the Special Issue Design Innovation in Built Environment: Integrating Health, Emotion and Systems)
  • Article
  • Open Access
4 Citations
2,549 Views
20 Pages

13 January 2023

Within the 6G vision, the future of mobile communication networks is expected to become more complex, heterogeneous, and characterized by denser deployments with a myriad of users in an ever-more dynamic environment. There is an increasing intent to...

(This article belongs to the Special Issue Complexity in 6G: Measures, Advanced Models and Mathematical Algorithms to Face New Challenges in the New Communication Paradigm Development)
  • Article
  • Open Access
5 Citations
3,365 Views
26 Pages

27 August 2025

With the growing use of digital technologies and interactive games, there is rising interest in how people respond to challenges, stress, and decision-making in virtual environments. Studying human behavior in such settings helps to improve design, t...

(This article belongs to the Special Issue Virtual Reality and Sensing Techniques for Human)
  • Article
  • Open Access
43 Citations
10,274 Views
19 Pages

Virtual Reality Adaptation Using Electrodermal Activity to Support the User Experience

  • Francesco Chiossi,
  • Robin Welsch,
  • Steeven Villa,
  • Lewis Chuang and
  • Sven Mayer

Virtual reality is increasingly used for tasks such as work and education. Thus, rendering scenarios that do not interfere with such goals and deplete user experience are becoming progressively more relevant. We present a physiologically adaptive sys...

  • Article
  • Open Access
1,358 Views
16 Pages

21 August 2024

The bipartite polarization problem is an optimization problem where the goal is to find the highest polarized bipartition on a weighted and labeled graph that represents a debate developed through some social network, where nodes represent user&rsquo...

  • Article
  • Open Access
14 Citations
4,649 Views
13 Pages

18 November 2023

The extended reality (XR) environment demands high-performance computing and data processing capabilities, while requiring continuous technological development to enable a real-time integration between the physical and virtual worlds for user interac...

(This article belongs to the Special Issue New Technologies and Applications of Edge/Fog Computing Based on Artificial Intelligence and Machine Learning)
  • Article
  • Open Access
1,426 Views
24 Pages

Crowdsensing utilizes a range of sensing resources and participants, including mobile device sensors, to achieve collaborative sensing and information fusion. This enables it to handle complex social sensing tasks and provide more intelligent and rea...

  • Article
  • Open Access
3 Citations
7,979 Views
19 Pages

User-Generated Services Composition in Smart Multi-User Environments

  • Vincenzo Catania,
  • Giuseppe La Torre,
  • Salvatore Monteleone,
  • Daniela Panno and
  • Davide Patti

The increasing complexity shown in Smart Environments, together with the spread of social networks, is increasingly moving the role of users from simple information and services consumers to actual producers. In this work, we focus on security issues...

(This article belongs to the Special Issue Sensors and Actuators in Smart Cities)
  • Article
  • Open Access
1 Citations
2,557 Views
17 Pages

While Local Differential Privacy (LDP) offers strong privacy guarantees for IoT data collection, users often struggle to understand its implications and control their privacy settings. This paper presents a user-centric approach to implementing LDP i...

(This article belongs to the Special Issue Data Protection and Privacy)
  • Article
  • Open Access
15 Citations
4,679 Views
26 Pages

Collaborative Smartphone-Based User Positioning in a Multiple-User Context Using Wireless Technologies

  • Viet-Cuong Ta,
  • Trung-Kien Dao,
  • Dominique Vaufreydaz and
  • Eric Castelli

10 January 2020

For the localization of multiple users, Bluetooth data from the smartphone is able to complement Wi-Fi-based methods with additional information, by providing an approximation of the relative distances between users. In practice, both positions provi...

(This article belongs to the Special Issue Sensors and Sensing Technologies for Indoor Positioning and Indoor Navigation)
  • Article
  • Open Access
8 Citations
2,569 Views
25 Pages

IoT (Internet of Things)-enabled products are increasingly used by consumers and continuously propagate in daily life. Billions of networked objects not only increase the complexity of development but also raise user interaction and adaptation to ind...

(This article belongs to the Section Entrepreneurship, Innovation, and Digital Business Models)

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