Numerical Implementation of a Critical State Model for Soft Rocks

This paper details the basic tasks for the numerical implementation of a simple elasto-plastic critical state model for bonded materials (i.e. soft rocks-hard soils) into the finite element program SNAC developed at the University of Newcastle in Australia. The first task described focusses on the derivation of the incremental constitutive relationships used to represent the mechanical response of a bonded/cemented material under saturated conditions. The second task presents how these stress-strain relations can be numerically integrated using an explicit substepping scheme with automatic error control. The third task concentrates on the verification of the substepping algorithm proposed. The model used to represent the saturated mechanical response of a bonded material combines the modified Cam clay with the constitutive relationships for cemented materials proposed in Gens & Nova (1993), but incorporates some flexibility on the degradation law adopted. The role of suction and other relevant aspects of unsaturated behaviour are also discussed at the end of the paper

The Bases of Association Rules of High Confidence

We develop a new approach for distributed computing of the association rules of high confidence in a binary table. It is derived from the D-basis algorithm in K. Adaricheva and J.B. Nation (TCS 2017), which is performed on multiple sub-tables of a table given by removing several rows at a time. The set of rules is then aggregated using the same approach as the D-basis is retrieved from a larger set of implications. This allows to obtain a basis of association rules of high confidence, which can be used for ranking all attributes of the table with respect to a given fixed attribute using the relevance parameter introduced in K. Adaricheva et al. (Proceedings of ICFCA-2015). This paper focuses on the technical implementation of the new algorithm. Some testing results are performed on transaction data and medical data.Comment: Presented at DTMN, Sydney, Australia, July 28, 201

Recent Developments in OCL and Textual Modelling

The panel session of the 16th OCL workshop featured a lightning talk session for discussing recent developments and open questions in the area of OCL and textual modelling. During this session, the OCL community discussed, stimulated through short presentations by OCL experts, tool support, potential future extensions, and suggested initiatives to make the textual modelling community even more successful. This collaborative paper, to which each OCL expert contributed one section, summarises the discussions as well as describes the recent developments and open questions presented in the lightning talks

Observation of the Crab Nebula Gamma-Ray Emission Above 220 Gev by the Cat Cherenkov Imaging Telescope

The CAT imaging telescope, recently built on the site of the former solar plant Themis (French Pyrenees), observed gamma-rays from the Crab nebula from October 1996 to March 1997. This steady source, often considered as the standard candle of very-high-energy gamma-ray astronomy, is used as a test-beam to probe the performances of the new telescope, particularly its energy threshold (220 GeV at 20 degrees zenith angle) and the stability of its response. Due to the fine-grain camera, an accurate analysis of the longitudinal profiles of shower images is performed, yielding the source position in two dimensions for each individual shower.Comment: 5 pages, 3 figures, Tex, contribution to 25th ICRC Durba

The dental vocational training experience : a transition from novice dentist to competent practitioner

Immediate postgraduate dental training is compulsory. To practise within the General Dental Services (GDS) the newly qualified must undertake a twelve-month period of vocational training (VT) as a Vocational Dental Practitioner (VDP) in an appropriate training practice under the immediate supervision of a vocational trainer. VT advisors manage schemes of 12 practices and arrange 30 VDP Study Days. This is a crucial period of transition for the new graduate. There is little evidence to support Seward's claim (2000) that VT has been the profession's success story, particularly in terms of patient care or educational worth. Taking an interpretive approach the aim of this study was to provide an insight into the educational value of VT and provide answers to the following: - How is a typical trainer/VDP partnership manifest? - What if the partnership is not successful? Are there unforeseen consequences of VT? - Is the selection process successful? - What is the influence of trainer expertise? The participants were two successive cohorts of 13 and 22 GKT Dental Institute graduates and their trainers. I established success criteria for defined aspects of VT; evidence was then sought to determine if the criteria had been met. I interviewed the VDPs and trainers at six months and again at year-end. An account of the most likely or typical experience and an example of failure to successfully implement VT form the core of this thesis. Asian women appeared to have difficulty securing a VT place, but they wanted to remain in the South East where competition for VT places is fierce. VT is a success story. Stated aims were achieved; with very few exceptions VT produced practitioners capable of independent practice. Novice dentists became competent practitioners. Progression in VT is a complex issue. As an expansion of the models of Eraut (1994) and Dreyfus and Dreyfus (1986), VT advances a relational model of progression. Trainers have developed a well-grounded notion of VDP progression, but they are themselves, in parallel, undergoing their own skills progression. One cannot be considered without the other. This study suggests VT could be better. The Professional Development Portfolio was not valued despite its potential. Training expertise seeped away from VT and was lost forever. Rested expert trainers could/want to act as mentors for less expert colleagues. That said VT as a `community of practice' (Lave and Wenger, 1991) provided a supportive and effective environment for VDPs and trainers to develop professional practice

Correspondence from William Brooks Cabot, 1930-1946

Correspondence from William Cabot concerning Indian languages, culture, and history, which were digitized from Box 1, Folder 17, of the Fannie Hardy Eckstorm Papers. Documents that did not pertain to Native Americans in Maine were not digitized and were not included in this file.https://digitalcommons.library.umaine.edu/eckstorm_papers/1004/thumbnail.jp

The CAT Imaging Telescope for Very-High-Energy Gamma-Ray Astronomy

The CAT (Cherenkov Array at Themis) imaging telescope, equipped with a very-high-definition camera (546 fast phototubes with 0.12 degrees spacing surrounded by 54 larger tubes in two guard rings) started operation in Autumn 1996 on the site of the former solar plant Themis (France). Using the atmospheric Cherenkov technique, it detects and identifies very high energy gamma-rays in the range 250 GeV to a few tens of TeV. The instrument, which has detected three sources (Crab nebula, Mrk 421 and Mrk 501), is described in detail.Comment: 24 pages, 15 figures. submitted to Elsevier Preprin

Spectrum and Variability of Mrk501 as observed by the CAT Imaging Telescope

The CAT Imaging Telescope has observed the BL Lac object Markarian 501 between March and August 1997. We report here on the variability over this time including several large flares. We present also preliminary spectra for all these data, for the low emission state, and for the largest flare.Comment: 4 pages, 4 figures, Late