17,333 research outputs found
Learning for design reuse
Over the past decade 'design assistance', i.e. where the computer is viewed as an Intelligent Design Assistant (IDA) [MacCallum-etal85], has emerged in knowledge based design support and has formed the basic research strategy for the CAD Centre, University of Strathclyde, since the mid-80s. Within this philosophy, an IDA would act as a colleague to a designer, providing guidance, learning from past design experiences, carrying out semi and fully automated tasks, explaining its reasoning and in essence complementing the designer's own natural skills, and thus leaving the ultimate decision making, control and responsibility with the designer
Cruise Report 72-KB-23: Inshore fisheries habitat evaluation and monitoring program
Document has 1 page
The status of the California spiny lobster resource
California spiny lobsters, Panulirus interruptus, are the object of intense fisheries prosecuted by both commercial and sport fishermen in California. Recent evidence indicates that the resource may be declining, and an investigation of the population dynamics is needed. It is recommended that the investigation assess the magnitude of the fishery, identify population units and investigate the adequacy of existing gear regulations. (14pp.
Design reuse research : a computational perspective
This paper gives an overview of some computer based systems that focus on supporting engineering design reuse. Design reuse is considered here to reflect the utilisation of any knowledge gained from a design activity and not just past designs of artefacts. A design reuse process model, containing three main processes and six knowledge components, is used as a basis to identify the main areas of contribution from the systems. From this it can be concluded that while reuse libraries and design by reuse has received most attention, design for reuse, domain exploration and five of the other knowledge components lack research effort
Particle Acceleration in Gamma-Ray Burst Jets
Gradual shear acceleration of energetic particles in gamma-ray burst (GRB)
jets is considered. Special emphasis is given to the analysis of universal
structured jets, and characteristic acceleration timescales are determined for
a power-law and a Gaussian evolution of the bulk flow Lorentz factor
with angle from the jet axis. The results suggest that local power-law
particle distributions may be generated and that higher energy particles are
generally concentrated closer to the jet axis. Taking several constraints into
account we show that efficient electron acceleration in gradual shear flows,
with maximum particle energy successively decreasing with time, may be possible
on scales larger than cm, provided the jet magnetic field
becomes sufficiently weak and/or decreases rapidly enough with distance, while
efficient acceleration of protons to ultra-high energies eV may be
possible under a wide range of conditions.Comment: 11 pages, 3 figures; ApJ Letters accepted; final version: small typos
corrected in order to match published versio
Training Community-Based Professionals to Implement an Empirically Supported Parenting Program
Professionals representing 14 community-based organizations were trained at three different sites serving urban and rural families to implement an empirically supported parenting program for families of young children with challenging behaviors. Of the 44 practitioners trained, 23 successfully completed the program, which involved passing a knowledge test and facilitating the entire 10session program with a family. A total of 28, primarily low-income families completed the program. The family outcomes obtained by the facilitators, based on multiple pre-program and post-program measures, were comparable with those reported previously in the literature for facilitators trained in university settings. The challenges inherent in efforts to increase the community’s capacity to implement empirically supported programs are addressed
Line defects and gauge invariance in glasses
Imperial Users onl
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