Parallel Architectures for Planetary Exploration Requirements (PAPER)

The Parallel Architectures for Planetary Exploration Requirements (PAPER) project is essentially research oriented towards technology insertion issues for NASA's unmanned planetary probes. It was initiated to complement and augment the long-term efforts for space exploration with particular reference to NASA/LaRC's (NASA Langley Research Center) research needs for planetary exploration missions of the mid and late 1990s. The requirements for space missions as given in the somewhat dated Advanced Information Processing Systems (AIPS) requirements document are contrasted with the new requirements from JPL/Caltech involving sensor data capture and scene analysis. It is shown that more stringent requirements have arisen as a result of technological advancements. Two possible architectures, the AIPS Proof of Concept (POC) configuration and the MAX Fault-tolerant dataflow multiprocessor, were evaluated. The main observation was that the AIPS design is biased towards fault tolerance and may not be an ideal architecture for planetary and deep space probes due to high cost and complexity. The MAX concepts appears to be a promising candidate, except that more detailed information is required. The feasibility for adding neural computation capability to this architecture needs to be studied. Key impact issues for architectural design of computing systems meant for planetary missions were also identified

Information system support in construction industry with semantic web technologies and/or autonomous reasoning agents

Information technology support is hard to find for the early design phases of the architectural design process. Many of the existing issues in such design decision support tools appear to be caused by a mismatch between the ways in which designers think and the ways in which information systems aim to give support. We therefore started an investigation of existing theories of design thinking, compared to the way in which design decision support systems provide information to the designer. We identify two main strategies towards information system support in the early design phase: (1) applications for making design try-outs, and (2) applications as autonomous reasoning agents. We outline preview implementations for both approaches and indicate to what extent these strategies can be used to improve information system support for the architectural designer

War on scale : models for the First World War battlefront

This essay traces the evolution and use of military scale models during the First World War. The application of such models by all belligerents is characterized by an enormous diversity in scale, context, construction method and purpose. Between the two extremes of a full scale replica of the Paris agglomeration and the tiny boxed miniature of a POW prison cell, a whole range of military models can be distinguished. On one hand, the model production can be considered part of a long tradition of military terrain modeling, as is evident in the examples of relief maps and training models. On the other hand, the rapidly changing technological and tactical developments during the Great War –such as strategic aerial bombing, camouflage and submarine warfare—require the creation of new types of scale models. During the last stages of the war, the encapsulation of the model as research object in a laboratory, looked at through optical devices and studied through model photography, demonstrates how this technological progress paves the way for a scientific approach towards warfare. The evolution of the models thus illustrates how war was waged on a variety of scales and that its theatre was far from limited to the battlefield itself