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A new wireless sensor and actuator network architecture for a district heating substation is presented. The implementation allows for new control algorithms to save substantial amounts of energy and therefore reduce waste and indirectly CO2 emissions. The wireless network uses TCP/IP all the way to the sensor level, which can enable a standardized service oriented architecture and the possibility...
Wide Maritime Area Airborne Surveillance (WiMAAS) is a capability project addressing the European Commission FP7 Security Research Call 1 topic ldquoSurveillance in wide maritime areas through active and passive meansrdquo. WiMAAS is providing a key airborne building block (including UAVs) of a civil maritime surveillance system of systems to be defined in Europe. Initial thoughts about the SoS are...
To counter today's rising complexity in System-on-Chip (SoC) design intellectual property (IP) cores are reused. In libraries often many different pre-designed components are available and selecting suitable IP is difficult and laborious. Power consumption is a key constraint in mobile devices, where SoCs are often used. Therefore, it is important to consider power when selecting components for reuse...
The system architecting process is the hierarchical reduction of ambiguity associated with user needs and system design. Design allocation, and subsequent integration, implicitly requires a mechanism by which levels of detail can be added and removed from a decision scenario. This paper addresses the idea of engineering model sharing through the concept of vertical and horizontal extensibility as...
In its simplest form, identity management deals with how users are identified and authorized across networks. In the case of federated identity management, these networks cross system and organizational boundaries. To manage identity in this context, a cooperative contract is set up between multiple identity providers, using a decentralized approach. Establishing an identity management strategy within...
Hazards are situations that can result in accidents. Depending on the domain, this can include loss of lives, injuries and economic or environmental disasters. For example, a common hazard in the aviation domain is in flight engine shutdown. Hazard analysis is the process of discovering hazards in a system. This activity has been performed for many years in safety engineering and is a straightforward...
A variety of Urban Rail Transit (URT) systems have been operating in Korea and they have different technology bases, causing a lot of difficulties in taking measures against trouble, training, upgrading, interoperability and so on. As such, a standardization project has been carried out to solve the problems by setting up the national standards for the systems. The main role of the project is to support...
Engineering systems is a field of scholarship focused on developing fundamental theories and methods to address the challenges of large-scale complex systems in context of their socio-technical environments. The authors describe facets of their recent and ongoing research within the field of engineering systems to develop constructs and methods for architecting enterprises engaged in system-of-systems...
The potential benefits of business agility, flexibility, and reuse associated with SOA are well known today. However, these benefits do not come without a cost of their own, particularly regarding security. The primary goal to make Web services widely accessible can also make them vulnerable. This paper examines the key challenges for securing service-oriented environments and identifies the important...
To help systems engineers select a method for modeling large complex systems during the requirements phase of systems engineering, and also help researchers develop better models and methods, this paper identifies the semantics, mathematical basis, and attributes needed to model a system of systems. We use these model characteristics to compare several practical languages and methods that engineers...
This paper describes the ground control system (GCS) of the Smart UAV at the Korea Aerospace Research Institute (KARI). The requirements, configuration and features of the GCS are detailed. And the functions of the pilot bay and observation bay are verified through the analysis of results from the ground and flight tests using a 40% scaled plane. It is also planned to develop a transmission console...
System of systems (SoS) architecting techniques rely on traditional, static tools that were designed for classical stove-piped systems. There is a need for tools that can capture the complex adaptive nature of such SoS. An architecture search methodology using genetic algorithms and a fuzzy assessor was applied to the conceptual architecture design of a generic smart grid and a set of architectures...
The demand for flexible and scalable mechatronic system is becoming more and more attractive. Modular systems made from a large number of modules can be formed various physical or logical topologies, consequently to achieve the capabilities to optimize their configurations to suit different applications. Although, modular concept will bring new scalable and extendable products for customers, it puts...
Most projects do not have the resources to produce and support all types of UML and DODAF diagrams. Analysis literature gives little guidance on which types of diagrams are vital for certain types of projects and domains. Here a veteran software engineer describes precisely which types of diagrams are vital and which are less important for different software projects. Also they offer some practical...
This paper reports a study that examines process breakdowns in the operations of a hospital's surgical unit. We find a correlation between the stage in the surgical process in which a breakdown is detected and the breakdown impact. We derive a model of the relationship between breakdown detection, impact, and safety within the surgical domain. We discuss the practical implications for targeted breakdown...
In every vehicle collision, the work-energy principle must be satisfied, i.e., the work done in stopping the driver must be equal to the driver's kinetic energy. Existing restraint systems such as airbags and seatbelts are designed to minimize injuries by smoothly absorbing the kinetic energy of the occupant during a crash event. Advanced systems are being developed to tailor their level of restraining...
This article presents the parallel implementation of a new multiscale model that is currently developed in the Molecular Dynamics Group from the University of Groningen. Multiscale methods combine the advantages of two levels of simulation, an atomistic and a coarse-grain one, with a small loss of performance. We designed a parallel implementation of this multiscale approach based on the improved...
Disparate customer support centers in an enterprise system apply different monitoring and analysis tools while attempting to ensure quality of service for the end-user. These tools provide inconsistent metrics that make problem resolution inefficient and reactive rather than proactive and effective. A systems engineering approach is proposed that considers enterprise monitoring and analysis in high-speed...
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