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New flexible network environments emerged in the last years, such as the Software-Defined Networks, the Network Function Virtualization and the various network slicing technologies. Their main goal is to satisfy and to flexibly cope with the changing requirements of both users and service / infrastructure providers with respect to the constraints of physical resources, the frequently changing network...
With continuous pressure for reducing vehicle development time & cost, without compromising reliability and quality from system, it is imperative to move from Road to Lab development. Every OEM is currently focusing on using virtual environment to complete the virtual testing and functional check for the system before hitting the road. This method of developing software and calibration in virtual...
Infrastructure as a Service (IaaS) is commonly used to deploy distributed systems like Web applications. For every component of a distributed system, IaaS consumers need to select, configure, and deploy a virtual machine (VM), the image to run on the VM, and software to install on the image. These tasks involve multiple decisions, require complex and error-prone manual effort, and may occur unexpectedly...
Remote areas in Australia are mostly powered by conventional diesel generators (DG). These systems face challenging tasks of increasing diesel costs, transportation of diesel over long distances, increased fuel consumption and maintenance costs associated with running the DGs in low load conditions. Furthermore, regulations by governments and lobbying by environmental activists are rising due to the...
Development and testing of automotive embedded control systems traditionally depended on the availability of prototype vehicles. Automotive manufactures adopted model based approaches in order to produce quality products faster. Thus, the need of more integrated testing using virtual environment in an automated manner becomes a vital element of product development. The full vehicle simulator aims...
Distributed Virtual Environments (DVEs) must continue to perform well as users are added. However, DVE performance can become sensitive to user behavior in many ways: their actions, their positions, and even the direction that they look. Two virtual words may be similar in terms of user experience, task efficiency, immersion, and aesthetics. However they may exhibit substantially different performance...
Distributed Virtual Environments (DVEs) are a large class of real-time simulation systems. We present an implementation-independent methodology for measuring, analyzing, and comparing DVE systems performance. The methodology comprises of a process of requirements elicitation and their conversion into measurable objectives. The process for determining quality requirements for a DVE is discussed, with...
We present an implementation-independent methodology for measuring, analyzing, and comparing Distributed Virtual Environment (DVE) system performance. The methodology comprises of a process of requirements elicitation and their conversion into measurable objectives. The process for determining quality requirements for a DVE is discussed, with a focus on interaction-based scenario analysis. A measurement...
The GT-POWER software was used to build the working process model of the diesel engine; through the bench test of the diesel engine, the simulation results were contrasted with the test results to proof the accuracy. The advance angle of injection of diesel engine was optimized at different loads of 2200r/min 1500r/min, the major parameters regularity of the diesel engine was further studied and the...
In order to reduce development cycle, powertrain control and optimization is increasingly based on system modeling and several steps of simulation are needed. As an intermediate step, real-time simulation aim to prepare further test bed validations embedding the actual engine. This article discusses the challenge to find a real-time execution model offering the determinism needed to maintain the numerical...
Network simulators play a vital role in research and development of networks. Simulations are usually computationally intensive where distributed execution can improve performance significantly. However, due to the sequential nature of the communication process modeled by network simulators and limitations in access to source code it is not possible to completely isolate the sub-processes for distributed...
In 3D computer graphics, it has been an important issue to describe a virtual object realistically and show it in a physically correct manner. Unlike the virtual reality(VR), the augmented reality (AR) is an environment containing virtual and real objects simultaneously. However, the difference in motion between the virtual and real objects is obvious, which makes it hard for AR to be realistic and...
This paper presents a novel method of contour reconstruction from dexel data solving the shape anomalies for the complex geometry in virtual sculpting. Grouping and traversing processes are developed to find connectivity between dexels along every two adjacent rays. After traveling through all the rays on one slice, sub-boundaries are connected into full boundaries which are desired contours. The...
Building on the extensive research in Virtual Reality (VR), we are proposing a new dynamic prototype for modelling and simulating carbon emissions in a virtual village called VIRVIL. VIRVIL is a simulated settlement for the assessment of the impact of low and zero carbon technologies and measures in the built environment. The prototype will focus on the impact on the community as a whole, as well...
The size of unified modeling language (UML) models used in practice is very large and ranges up to hundreds and thousands of classes. Querying of these models is used to support their quality assessment by information filtering and aggregating. For both, human cognition and automated analysis, there is a need for fast querying. In this context performance of model queries becomes an important issue...
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