11,194 research outputs found
New Shop Floor Control Approaches for Virtual Enterprises
The virtual enterprise paradigm seems a fit response to face market instability and the volatile nature of business opportunities increasing enterpriseās interest in similar forms of networked organisations. The dynamic environment of a virtual enterprise requires that partners in the consortium own reconfigurable shop floors. This paper presents new approaches to shop floor control that meet the requirements of the new industrial paradigms and argues on work re-organization at shop floor level.virtual enterprise; networked organisations
RDF Querying
Reactive Web systems, Web services, and Web-based publish/
subscribe systems communicate events as XML messages, and in
many cases require composite event detection: it is not sufficient to react
to single event messages, but events have to be considered in relation to
other events that are received over time.
Emphasizing language design and formal semantics, we describe the
rule-based query language XChangeEQ for detecting composite events.
XChangeEQ is designed to completely cover and integrate the four complementary
querying dimensions: event data, event composition, temporal
relationships, and event accumulation. Semantics are provided as
model and fixpoint theories; while this is an established approach for rule
languages, it has not been applied for event queries before
Scheduling language and algorithm development study. Volume 2, phase 2: Introduction to plans programming
A user guide for the Programming Language for Allocation and Network Scheduling (PLANS) is presented. Information is included for the construction of PLANS programs. The basic philosophy of PLANS is discussed, and access and update reference techniques are described along with the use of tree structures
Survey over Existing Query and Transformation Languages
A widely acknowledged obstacle for realizing the vision of the Semantic Web is the inability
of many current Semantic Web approaches to cope with data available in such diverging
representation formalisms as XML, RDF, or Topic Maps. A common query language is the first
step to allow transparent access to data in any of these formats. To further the understanding
of the requirements and approaches proposed for query languages in the conventional as well
as the Semantic Web, this report surveys a large number of query languages for accessing
XML, RDF, or Topic Maps. This is the first systematic survey to consider query languages from
all these areas. From the detailed survey of these query languages, a common classification
scheme is derived that is useful for understanding and differentiating languages within and
among all three areas
Context-aware adaptation in DySCAS
DySCAS is a dynamically self-configuring middleware for automotive control systems. The addition of autonomic, context-aware dynamic configuration to automotive control systems brings a potential for a wide range of benefits in terms of robustness, flexibility, upgrading etc. However, the automotive systems represent a particularly challenging domain for the deployment of autonomics concepts, having a combination of real-time performance constraints, severe resource limitations, safety-critical aspects and cost pressures. For these reasons current systems are statically configured. This paper describes the dynamic run-time configuration aspects of DySCAS and focuses on the extent to which context-aware adaptation has been achieved in DySCAS, and the ways in which the various design and implementation challenges are met
FPGA technology mapping optimizaion by rewiring algorithms.
Tang Wai Chung.Thesis (M.Phil.)--Chinese University of Hong Kong, 2005.Includes bibliographical references (leaves 40-41).Abstracts in English and Chinese.Abstract --- p.iAcknowledgement --- p.iiiChapter 1 --- Introduction --- p.1Chapter 2 --- Rewiring Algorithms --- p.3Chapter 2.1 --- REWIRE --- p.5Chapter 2.2 --- RAMFIRE --- p.7Chapter 2.3 --- GBAW --- p.8Chapter 3 --- FPGA Technology Mapping --- p.11Chapter 3.1 --- Problem Definition --- p.13Chapter 3.2 --- Network-flow-based Algorithms for FPGA Technology Mapping --- p.16Chapter 3.2.1 --- FlowMap --- p.16Chapter 3.2.2 --- FlowSYN --- p.21Chapter 3.2.3 --- CutMap --- p.22Chapter 4 --- LUT Minimization by Rewiring --- p.24Chapter 4.1 --- Greedy Decision Heuristic for LUT Minimization --- p.27Chapter 4.2 --- Experimental Result --- p.28Chapter 5 --- Conclusion --- p.38Bibliography --- p.4
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