Application Of Virtual Reality System Research Articles

Application of Virtual Reality Systems in Bone Trauma Procedures.

Background and Objectives: Bone fractures contribute significantly to the global disease and disability burden and are associated with a high and escalating incidence and tremendous economic consequences. The increasingly challenging climate of orthopaedic training and practice re-echoes the established potential of leveraging computer-based reality technologies to support patient-specific simulations for procedural teaching and surgical precision. Unfortunately, despite the recognised potential of virtual reality technologies in orthopaedic surgery, its adoption and integration, particularly in fracture procedures, have lagged behind other surgical specialities. We aimed to review the available virtual reality systems adapted for orthopaedic trauma procedures. Materials and Methods: We performed an extensive literature search in Medline (PubMed), Science Direct, SpringerLink, and Google Scholar and presented a narrative synthesis of the state of the art on virtual reality systems for bone trauma procedures. Results: We categorised existing simulation modalities into those for fracture fixation techniques, drilling procedures, and prosthetic design and implantation and described the important technical features, as well as their clinical validity and applications. Conclusions: Over the past decade, an increasing number of high- and low-fidelity virtual reality systems for bone trauma procedures have been introduced, demonstrating important benefits with regard to improving procedural teaching and learning, preoperative planning and rehearsal, intraoperative precision and efficiency, and postoperative outcomes. However, further technical developments in line with industry benchmarks and metrics are needed in addition to more standardised and rigorous clinical validation.

Delay-Dependent Stability Analysis in Haptic Rendering

Nowadays haptic devices have lots of applications in virtual reality systems. While using a haptic device, one of the main requirements is the stable behavior of the system. An unstable behavior of a haptic device may damage itself and even may hurt its operator. Stability of haptic devices in the presence of inevitable time delay in addition to a suitable zero-order hold is studied in the presented paper, using two different methods. Both presented methods are based on Lyapunov-Krazuvskii functional. In the first method, a model transform is performed to determine the stability boundary, while the second approach is based on Free Weighing Matrices (FWMs). Delay-dependent stability criteria are determined by solving Linear Matrix Inequalities (LMIs). Results of these two methods are compared with each other and verified by simulations as well as experiments on a KUKA Light Weight Robot 4 (LWR4). It is concluded that using free weighing matrices leads to more unknown parameters and needs more calculation, but its results are less conservative.

The application of virtual reality systems as a support of digital manufacturing and logistics

Modern trends in development of computer aided techniques are heading toward the integration of design competitive products and so-called "digital manufacturing and logistics", supported by computer simulation software. All phases of product lifecycle: starting from design of a new product, through planning and control of manufacturing, assembly, internal logistics and repairs, quality control, distribution to customers and after-sale service, up to its recycling or utilization should be aided and managed by advanced packages of product lifecycle management software. Important problems for providing the efficient flow of materials in supply chain management of whole product lifecycle, using computer simulation will be described on that paper. Authors will pay attention to the processes of acquiring relevant information and correct data, necessary for virtual modeling and computer simulation of integrated manufacturing and logistics systems. The article describes possibilities of use an applications of virtual reality software for modeling and simulation the production and logistics processes in enterprise in different aspects of product lifecycle management. The authors demonstrate effective method of creating computer simulations for digital manufacturing and logistics and show modeled and programmed examples and solutions. They pay attention to development trends and show options of the applications that go beyond enterprise.

Developing Virtual Residential Area using Virtual Reality Modeling Language and Virtual Reality Tools

Virtual reality is one of the most developing parts of computer science and engineering. It has opened the door of new possibilities in the field of computer science and engineering. It is also currently being examined for practical use in various industrial fields. One contribution of this paper is that it provides a real example of virtual reality in industrial applications which may encourage the scientists to develop virtual reality model. The paper also discusses shortly about the current use of virtual reality tools, their uses in various sectors of science and engineering and proposes theoretically an application of virtual reality system for developing residential area. One programming language, virtual reality modeling language is presented in development of computer visualization tools for the system. By using high resolution display, three dimension computer graphics, and interactive device, a virtual world can be realized in which imaginary objects created by VRML can be picked up as if they are in real world.

Application of virtual reality system for individualized preoperative planning of sphenoidal ridge meningioma

To evaluate the usefulness of virtual reality (VR) technique for individualized preoperative planning of sphenoidal ridge meningioma. Multiple imaging data of CTA/MR were acquired from 41 surgical patients with sphenoidal ridge meningioma during the period from July 2009 to June 2013 were transferred into the Dextroscope system. A suite of built-in 3D tools enabled users to obtain measurement and simulated intraoperative viewpoint about the lesion and adjacent anatomic structures. A sophisticated preoperative plan was defined.Operative duration, total resection rate, complication rate and KPS scores were compared with control group undergoing routine operation (n = 27). 3D stereoscopic VR images in accordance with reality were reconstructed for 41 cases. As compared with control group,VR preoperative plan could shorten operative duration and reduce complication rate (P < 0.05). However, there was no improvement in total resection rate or KPS score (P > 0.50). VR technique of Dextroscope system offers comprehensive information of sphenoidal ridge and related neurovascular anatomical structure. Thus it may aid surgical planning and facilitate individualized operation.

Integration of Physical Devices into Game-based Virtual Reality

Virtual reality (VR) systems have the potential for alleviating the existing constraints on various natural and social resources. Currently, real-time applications of VR systems are hampered by the tediousness of creating virtual environments. Furthermore, todayâ??s VR systems only stimulate the human senses of vision, hearing and â?? to some extent touch â?? which prevents the system users to feel fully immersed in the virtual environment. By integrating real physical devices with virtual environments, the user interactions with such systems can be improved and advanced technologies such as the MS Kinect system could be used to augment the environments themselves. While existing development platforms for VR systems are expensive, game engines provide a more efficient method for integrating VR with physical devices.&#x0D; In this paper, an efficient approach for integrating virtual environments and physical devices is presented. This approach employs modifications of games that are based on commercially available game engines for implementing the virtual environments in conjunction with the application of Dynamic Link Libraries (DLLs) for realizing versatile communications between these virtual environments and various application platforms, which in turn can interact with the physical devices outside of the virtual environments. This paper is divided into four sections. In the first section, the motivation for the developments described here is discussed, followed by a description of the method used to integrate virtual environments with physical devices in the second section. In the third section, an interactive and collaborative laboratory environment based on a multi-player computer game engine that is linked to physical experimental setups is presented as an example of a VR system. In the final section, some additional promising applications of the developed platform and the corresponding challenges are briefly introduced.

Design and Control of the Dual-Axis Dynamic Simulator and its Application on the Remote Control and Virtual Reality

Virtual reality systems are not limited by place and space, and with convenience and safety features. Besides, since virtual scenes are of high plasticity, there is a wide range of applications in virtual reality systems, such as entertainment, simulation training…etc. In this study, roller coaster games let operators enjoy indoor roller coaster excitement and could not accept more users experience the pleasure of high-stimulation. The purpose of this study is to develop a dual-axis dynamic simulator and a new generation of the sport platform in the use of the low-cost control circuit board and the AC reversible motor. In addition, use the Bluetooth signal may be exempted from the complex system of wiring, and allows you to load device for wireless remote control and one to many large-scale systems show purposes. Also, the dynamic feedback mode of the feeling type is first used to render virtual reality, so the scene can be changed by the demands of the operator.

Software Packages to Support Electrical Engineering Virtual Lab

The use of Virtual Reality Systems (VRS), as a learning aid, encourages the creation of tools that allow users/students to simulate educational environments on a computer. This article presents a way of building a VRS system with Software Packages to support Electrical Engineering Virtual Laboratories to be used in a near future in the teaching of the curriculum unit of Circuit Theory. The steps required for the construction of a project are presented in this paper. The simulation is still under construction and intends to use a three-dimensional virtual environment laboratory electric measurement, which will allow users/students to experiment and test the modeled equipment. Therefore, there are still no links available for further examination. The result may demonstrate the future potential of applications of Virtual Reality Systems as an efficient and cost-effective learning system.

Design and Application of Virtual Reality System in Fully Mechanized Mining Face

This paper introduced function design and development flow of virtual reality system of fully mechanized mining face. In the process of geometric modeling, element partitioning, instance,atomization and other technologies were used to improve the real-time performance of virtual view. With hydraulic support as the example,based on analysis of 4-linkage motion mechanism,the paper built the motion model and realized behavioral modeling. Virtual reality system in fully mechanized mining face was built by means of OpenGL and Visual C++ 6.0 and it has obvious stereo vision effect.The system has interaction functions of scene roaming and equipment operation. In addition, the production process of fully mechanized mining face could be simulated. Design and realization of this system put forward a new approach to miner training, student practice and disaster relief maneuvers.

Investigating the Application of Virtual Reality Systems to Psychology and Cognitive Neuroscience Research

With interest in virtual reality (VR) technologies, techniques, and devices growing at a quick pace, many researchers in areas such as psychology or cognitive neuroscience want to use VR. The software and VR systems available today do not support the skill sets or experimental requirements of this group of users. We describe a number of concerns and requirements that researchers express and focus on the extent to which today's VR systems support non-VR experts. The work then concludes with a number of suggestions and potential development avenues that should be undertaken to ensure that VR systems are usable by a large range of researchers, regardless of their programming skills or technical backgrounds.

Tool-assisted mesh generation based on a tissue-growth model.

An heuristic mesh generation technique is proposed that is based on the model of forced particle motion, an edgewise cell-splitting algorithm and a moving tool concept. The method differs from conventional mesh generators in that it uses outward growth of the mesh, in contrast to the inward growth used in traditional meshing techniques. The method does not require prior meshing and patching of two-dimensional (2D) boundary surfaces. Instead, it uses a pre-defined skeleton of one-dimensional segments, or an arbitrary tool motion in three-dimensional (3D) space. In this respect, the technique can be considered as a 3D extension of a 2D drawing tool and can find applications in virtual reality systems. The method also guarantees the smoothness of the outer boundary of the mesh at each step of mesh generation, which is not the case with traditional propagating-front methods. The approach is based on the model of tissue growth and is suitable for meshing complex networks of bifurcating branches commonly found in biological structures: blood vessels, lungs, neural networks, plants etc. The generated meshes were used in solving unsteady flow and particle transport problems in lungs.

The ALIVE system: wireless, full-body interaction with autonomous agents

The cumbersome nature of wired interfaces often limits the range of application of virtual environments. In this paper, we discuss the design and implementation of a novel system, called ALIVE, which allows unencumbered full-body interaction between a human participant and a rich graphical world inhabited by autonomous agents. Based on results obtained with thousands of users, the paper argues that this kind of system can provide more complex and very different experiences than traditional virtual reality systems. The ALIVE system significantly broadens the range of potential applications of virtual reality systems: in particular, the paper discusses novel applications in the area of training and teaching, entertainment, and digital assistants or interface agents. We give an overview of the methods used in the implementation of the existing ALIVE systems.

Virtual reality in Japan

The trends of virtual-reality research in Japan are reviewed. Research on the application of virtual reality systems in three-dimensional imaging of software structures, remote control of construction robots, and molecular model design is discussed. A prototype of a plant monitoring system that uses camera images to provide a sense of being there, and experiments on the tactile senses of touch and pressure, are described. The space interface device for artificial reality (SPIDAR) is also discussed.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>