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We have witnessed the exponential growth of 3D GIS applications which vary from 3D urban management, a heritage city, archaeology, flood controlling, planning and designing, and government planning, to name a few. Thanks to the diversity of 3D models that are used to represent objects in reality and spatial database systems that are utilized to store spatial data, designers and developers can explore...
System specifications can be modeled using various types of notations and diagrams regarding applications of the particular model. In this paper, we present an overview of the existing solutions, focusing on UML, BPMN and DMN models and the diagrams provided by these notations. We perform a comparison of these approaches and provide examples of representing system requirements in these notations.
High Voltage Direct Current (HVDC) interconnections have seen an increased rate of deployment, in particular to exploit distant renewable energy sources. In order to design and understand their behavior, including their effect on the overall network, different computer tools are used for modeling and simulation. This approach results in several challenges in modeling and simulation consistency, particularly...
The paper deals with the modeling of computer subsystems, such as the input-output, direct memory access controller, memory of multiprocessor, multicore processor. For each model the input and output data sets are given. The modes of operation and functions of simulation models are described. The screen forms samples for the simulation models are shown.
Most of the Indian urban roads are bi-directional in nature consists of mix up of different vehicle types with weak lane discipline. A mathematical or analytical treatment of such condition is found infeasible due to its complex nature. Hence, simulation has become inevitable tool for analysis and interpretation of such real world situations. There are only few studies which focuses exclusively on...
Although the database schemas are an integral part of information systems, the use of software product lines has been mainly studied for the production of executable code. The impact on data management and in particular the database schemas are poorly documented and little studied in the literature. The paper is an attempt to explore some of the issues of the modeling and implementation of the variability...
The development of large and complex simulated models often requires teams to collaborate. One approach is to break a large model into independently developed partial models that, when combined, capture the overall behavior. However, maintaining consistent world state across independently developed simulations is a challenge. In this paper, we introduce the Collaborative Aspect-Oriented Distributed...
Challenges such as understanding sustainable urban development require modeling interdependencies and interactions among systems. The High Level Architecture (HLA) provides an approach to studying these aspects by integrating separately developed simulations in a distributed computing environment. These applications require coupling interdependent simulations and sequencing their execution to ensure...
OntoUML is an ontologically well-founded conceptual modelling language that distinguishes various types of classifiers and relations providing precise meaning to the modelled entities. Efforts arise to incorporate OntoUML into the Model-Driven Development approach as a conceptual modelling language for the PIM of application data. In a prequel paper, we have introduced and outlined our approach for...
In software development we are faced with the problem to comprehend and take over source code from other developers. The key challenge is to understand the underlying specification implemented by the software system. Regaining this understanding is more difficult when the source code is the only reliable source of information, documentation is outdated or only present in fragments, and original developers...
Several leading research groups name hardware generation as the next disruptive productivity improvement after IP-reuse. Metamodeling and code generation have already demonstrated a speedup by a factor 3× for the complete implementation phase of a chip. Furthermore, code size reduction by a factor of 3× was achieved with the hardware generation language (HGL) Chisel.
A safety critical system like an autonomous car has to rely on an excellent perception, both in accuracy and reliability to allow a correct functional behaviour of the system. It is not conceivable that one sensor or even a set of sensors will be able to provide this demanded quality on its own. Current approaches are aiming for car external solutions like smart infrastructure or Vehicle2X communication...
User interest model is the key technology for us to efficiently obtain personalized high quality resources in huge amounts of data. On the basis of traditional user interest model, combining with the concept of ontology, this paper designs a system to construct user interest model based on ontology semantic tree and space vector model, and its eigenvalue is changing by using Ebbinghaus's theory of...
Context modeling restricts the development of context awareness. Most of existing context modeling techniques are closely related to the applications, which limits reusing of contextaware computing systems. Context Space Modeling(CSM) is not application-specified, but it ignores the time information in the context cannot accurate to represent the dynamic contexts. Address the above problems, the Context...
Environmental control and life support system(ECLSS) of the manned spacecraft is an important system to guarantee the safety and life support of the astronauts and the environment inside the space station. For the physicochemical regeneration type of ECLSS(PRLSS), because of its complicated physicochemical process, to analyze and evaluate the mass balance and operation performance through simulation...
A smart environment is a physical environment enriched with sensing, actuation, communication and computation capabilities aiming at acquiring and exploiting knowledge about the environment so as to adapt it to inhabitants' preferences and requirements. In this domain, there is the need of tools supporting the design and analysis of applications. In this paper, a meta-model framework for smart environments...
We present an efficient and scalable scheme for implementing agent-based modeling (ABM) simulation with In Situ visualization of large complex systems on heterogeneous computing platforms. The scheme is designed to make optimal use of the resources available on a heterogeneous platform consisting of a multicore CPU and a GPU, resulting in minimal to no resource idle time. Furthermore, the scheme was...
The generation of short pulses of ion beams through the interaction of an intense laser with a plasma sheath offers the possibility of compact and cheaper ion sources for many applications--from fast ignition and radiography of dense targets to hadron therapy and injection into conventional accelerators. To enable the efficient analysis of large-scale, high-fidelity particle accelerator simulations...
Software must be well developed and maintainable to adapt to the constantly changing requirement of the competitive world. In this article, we distinct different software maintainability prediction models and techniques which can help us to predict the maintainability of software, and can lead us to minimum the effort required to fix the faults in the software and the software will be more maintainable...
Agent-based modeling and simulation (ABMS) has attracted social scientists and demographers in the field of social simulation. Due to large number of computer simulation technologies, ABMS approaches have been proposed with majority applications. ABMS composed of heterogeneous interacting agents, with several features which turn them into a significantly attractive modeling approach to simulate complex...
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