The Global Positioning System (GPS) can be utilised in a wide range of deformation monitoring applications. During the past few years a methodology has been developed for processing data collected by GPS networks consisting of a mixed set of single-frequency and dual-frequency receivers. The strategy is to deploy a few permanent, ‘fiducial’ GPS stations with dual-frequency, geodetic-grade recei...

The concept of configuration of groups which is defined in terms of finite partitions and finite strings of elements of the group is presented by Rosenblatt and Willis. To each set of configurations, a finite system of equations known as configuration equations, is associated. Rosenblatt and Willis proved that a discrete group G is amenable if and only if every possible instance of its configur...

Supply chain units are connected by both physical and information flows. Electronic services are used to perform a large part of activities in modern supply chains. The traditional supply chain configuration models pay the main attention to optimization of the physical flows. However, it is equally important to ensure that the physical units have appropriate information processing and logistics...

Friction stir welding (FSW) is a powerful joining process which is limited by its range of application and processing rate. Here the range of application is extended to small-diameter butted pipe sections and high processing rates are applied for increased productivity in manufacturing. Full penetration friction stir welds are performed on butted sections of aluminium alloy 6061-T6 pipe. These ...

SIGHT-2 is a multiprocessor system that is intended to efficiently execute the ray tracing algorithm. To achieve high efficiency, three kinds of parallel execution mechanisms; (i) a multiprocessor configuration, (ii) a parallel execution of three dimensional vector operations, and (iii) functionally distributed parallel processing are introduced. Owing to the latter two techniques, each process...

The ATLAS Trigger and Data Acquisition (TDAQ) system is based on O(2k) processing nodes, interconnected by a multi-layer Gigabit network, and consists of a combination of custom electronics and commercial products. In its final configuration, O(20k) applications will provide the needed capabilities in terms of event selection, data flow, local storage and data monitoring. In preparation for the...

A problem frequently faced by complex distributed applications is to control the interaction of their communication and computational activities such that they jointly adhere to desired performance and timing requirements. This research concerns communication infrastructures able to cope with the varying processing and QoS1 requirements imposed on them by application programs. Specifically, we ...

A graphics workstation should offer both a wide variety of 20 and 3D real­ time display functions as well as a programmable parallel-processing capacity for large processing tasks. A system concept is proposed that meets these require­ ments by offering a multi-processor configuration with general-purpose pro­ grammable processors, enhanced with specific logic that can perform for each node a l...

Parts produced by additive manufacturing (AM) often require post processing to improve surface finish and mechanical properties. However, little attention has been given to including deformation in the post processing. Deformation post-processing can address some part size, manufacturing cost, and geometry limitations of 3D printing. Additionally, it could be used to create 3D surfaces using pl...

Supply chain units are connected by both physical and information flows. Electronic services are used to perform a large part of activities in modern supply chains. The traditional supply chain configuration models pay the main attention to optimization of the physical flows. However, it is equally important to ensure that the physical units have appropriate information processing and logistics...