18,329 research outputs found
BIM semantic-enrichment for built heritage representation
In the built heritage context, BIM has shown difficulties in representing and managing the large and complex knowledge related to non-geometrical aspects of the heritage. Within this scope, this paper focuses on a domain-specific semantic-enrichment of BIM methodology, aimed at fulfilling semantic representation requirements of built heritage through Semantic Web technologies. To develop this semantic-enriched BIM approach, this research relies on the integration of a BIM environment with a knowledge base created through information ontologies. The result is knowledge base system - and a prototypal platform - that enhances semantic representation capabilities of BIM application to architectural heritage processes. It solves the issue of knowledge formalization in cultural heritage informative models, favouring a deeper comprehension and interpretation of all the building aspects. Its open structure allows future research to customize, scale and adapt the knowledge base different typologies of artefacts and heritage activities
The "MIND" Scalable PIM Architecture
MIND (Memory, Intelligence, and Network Device) is an advanced parallel computer architecture for high performance computing and scalable embedded processing. It is a
Processor-in-Memory (PIM) architecture integrating both DRAM bit cells and CMOS logic devices on the same silicon die. MIND is multicore with multiple memory/processor nodes on
each chip and supports global shared memory across systems of MIND components. MIND is distinguished from other PIM architectures in that it incorporates mechanisms for efficient support of a global parallel execution model based on the semantics of message-driven multithreaded split-transaction processing. MIND is designed to operate either in conjunction with other conventional microprocessors or in standalone arrays of like devices. It also incorporates mechanisms for fault tolerance, real time execution, and active power management. This paper describes the major elements and operational methods of the MIND
architecture
Experiences Developing Safe and Fault-Tolerant Tele-Operated Service Robots. A Case Study in Shipyards
Human operators use tele-operated service robots for performing more or less hazardous
operations (manipulation of heavy and/or dangerous products) in more or less hostile
environments (nuclear reactors, space missions, warehouses, etc). Anyway, independently
of the operation, the robot has to interact with both the environment it is working on and
with human operators. Therefore, it is essential that the design (which include both software
and hardware) of the robot involves no risk, or at least an acceptable level of risk, neither for
the operators, nor for the environment nor for the robot itself.
Nevertheless, it is not always possible to make a system free of failures in its design or
operation. Apart from the risk inherent to the use of the mechanisms themselves, these
systems work in hazardous environments, where the probability of the risk is higher than
normal. Should a failure happen, its consequences could even involve the loss of human
lives. (Neumann, 1994) documents many cases of computer-related failures, such as the
Therac-25 (a radiation-therapy device), the missiles shield in Saudi Arabia, etc.
Nevertheless, safety aspects are seldom included in the early phases of the system design
process from the beginning, even though they are a critic aspect. Generally, safety has to
conform and adapt to the already designed system and not vice versa, when it is widely
known that safety involves not only the design of the software but also the hardware. Even
more, a simple hardware solution can eliminate a hazard or simplify the software design in
many situations.This research has been funded by the Spanish CICYT project MEDWSA (TIN2006-15175-
C05-02) and the Regional Government of Murcia Séneca Program (02998-PI-05)
Using a spatial overlap approach to estimate the risk of collisions between deep diving seabirds and tidal stream turbines : a review of potential methods and approaches
Peer reviewedPublisher PD
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