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

Filial therapy : a comparison of child-parent relationship therapy and parent-child interaction therapy

Filial therapy, originally developed by Bernard Guerney (1964), is a form of parent child therapy utilizing child-centered skills and limit setting strategies to improve the parent child relationship and to increase positive child behaviors. Parent Child Interaction Therapy (PCIT), developed by Sheila Eyberg (1988), is an empirically supported treatment for improving parenting skills and decreasing negative externalizing behavior with children. Child Parent Relationship Therapy (CPRT), developed by Garry Landreth (2002), is an up and coming form of Filial therapy, supported in the literature for improving the parent child relationship and improving the child’s general functioning. Children diagnosed with Autism Spectrum Disorders (ASD) often present with deficits in their socialization and communication abilities. These deficiencies can cause strain on the parent child relationship because of the challenges inherent to the maladaptive interactions common among families with a child diagnosed with ASD. Therefore, there is a need for effective interventions to improve the functioning between the parent and child. However, a review of the literature discovered a lack of research using Filial therapy with children diagnosed with ASD and no research comparing different forms of Filial therapy. In order to better inform practitioners, the current study utilized qualitative analysis through a deconstructing evidence approach to examine the experience of four participants in either the PCIT or CPRT group. Participants completed pre and post assessments measuring changes in the parent child relationship and their child’s adaptive functioning. The counselors of the group also recorded the parents’ reactions to the group through their weekly progress notes. The results yielded little support for one approach over the other. One participant in the CPRT had a very successful experience overall, reporting improvement in the parent child relationship and her child’s adaptive functioning. Furthermore, the counselors recorded a more positive reaction from the parents in the CPRT group as compared to the largely neutral or negative reactions from the parents in the PCIT group. However, overall, the study concluded that more research is needed on identifying a clearly superior Filial therapy approach for children diagnosed with ASD.Department of Counseling Psychology and Guidance ServicesThesis (Ph. D.

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.

Cruise Report 73-KB-12: Diving Safety Board

(1p.

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 $\gamma_b$ with angle $\phi$ 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 $r \sim 10^{15}$ 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 $> 10^{20}$ 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

Internet Auctions with Artificial Adaptive Agents: A Study on Market Design

Many internet auction sites implement ascending-bid, second-price auctions. Empirically, lastminute or “late” bidding is frequently observed in “hard-close” but not in “soft-close” versions of these auctions. In this paper, we introduce an independent private-value repeated internet auction model to explain this observed difference in bidding behavior. We use finite automata to model the repeated auction strategies. We report results from simulations involving populations of artificial bidders who update their strategies via a genetic algorithm. We show that our model can deliver late or early bidding behavior, depending on the auction closing rule in accordance with the empirical evidence. As an interesting result, we observe that hard-close auctions raise less revenue than soft-close auctions. We also investigate interesting properties of the evolving strategies and arrive at some conclusions regarding both auction designs from a market design point of view.

Asset Price Bubbles and Crashes with Near-Zero-Intelligence Traders: Towards an Understanding of Laboratory Findings

We examine whether a simple agent--based model can generate asset price bubbles and crashes of the type observed in a series of laboratory asset market experiments beginning with the work of Smith, Suchanek and Williams (1988). We follow the methodology of Gode and Sunder (1993, 1997) and examine the outcomes that obtain when populations of zero-- intelligence (ZI) budget constrained, artificial agents are placed in the various laboratory market environments that have given rise to price bubbles. We have to put more structure on the behavior of the ZI-agents in order to address features of the laboratory asset bubble environment. We show that our model of "near--zero--intelligence" traders, operating in the same double auction environments used in several different laboratory studies, generates asset price bubbles and crashes comparable to those observed in laboratory experiments and can also match other, more subtle features of the experimental data.