Conference review: The Association for the Treatment of Sexual Abusers (ATSA) 38th Annual Research & Treatment Conference, Wednesday 6 - Saturday 9 November 2019

For over thirty years, ATSA’s Annual Conference has brought together experts from across the globe to discuss best practices in sexual abuse prevention. The landmark four-day event offers various symposia, roundtables, clinics, and workshops relating to the treatment of individuals who have engaged in sexually offending behaviours, and is considered one of the most prolific regular mass-gatherings of sexual violence prevention advocates internationally. In this article, we review our experiences of ATSA’s 2019 Conference in Atlanta, Georgia and reflect on the key take-home lessons we learned from our first international conference

Distributed VR-based simulation for manufacturing

VR-based simulation has been applied to a wide range of industrial applications. The rapid development of networking and Internetworked 3D graphics techniques has already begun to foster the distributed VR-based simulation system. The WWW as the delivery mechanism has made the VR-based simulator widely available and affordable. In this paper, we propose a cost-effective approach to create distributed VR-based simulation systems for manufacturing applications. Using this approach, three VRML manufacturing simulators machining, process flow, factory layout, are described in detail. The current challenges of a distributed VR-based simulator are also discussed

E-manufacturing in networked virtual environments

E-manufacturing is a new generation of product development solution allows manufacturers all over the world to speed up and slim down everything from design to manufacturing. It has been employed in a wide range of manufacturing activities. Networked Virtual Environments (Net-VEs) have already begun to foster an insightful, intuitive and interactive system that allows effective communication among multiple users. After exploring the architecture and features of Net-VEs, a cost-effective approach to create an e-manufacturing system in Net-VEs is proposed in this paper. The World Wide Web (WWW) as the delivery mechanism has made such system widely available and affordable. We also evaluate an e-manufacting system in Net-VEs by comparison with a traditional product development approach

Further Studies of Unusual Fission Mass Distributions using 190 MeV Protons

This research was sponsored by the National Science Foundation Grant NSF PHy 87-1440

Active Galactic Nuclei at the Crossroads of Astrophysics

Over the last five decades, AGN studies have produced a number of spectacular examples of synergies and multifaceted approaches in astrophysics. The field of AGN research now spans the entire spectral range and covers more than twelve orders of magnitude in the spatial and temporal domains. The next generation of astrophysical facilities will open up new possibilities for AGN studies, especially in the areas of high-resolution and high-fidelity imaging and spectroscopy of nuclear regions in the X-ray, optical, and radio bands. These studies will address in detail a number of critical issues in AGN research such as processes in the immediate vicinity of supermassive black holes, physical conditions of broad-line and narrow-line regions, formation and evolution of accretion disks and relativistic outflows, and the connection between nuclear activity and galaxy evolution.Comment: 16 pages, 5 figures; review contribution; "Exploring the Cosmic Frontier: Astrophysical Instruments for the 21st Century", ESO Astrophysical Symposia Serie

High-K isomers in neutron-rich hafnium nuclei at and beyond the stability line

Pulsed 238U and 208Pb beams have been used to populate multi-quasiparticle high-K isomers in neutron-rich hafnium isotopes at and beyond the line of b-stability, via inelastic excitation and transfer. Spectroscopic properties and configuration assignments of several new high-K isomers are compared with earlier theoretical predictions. A striking example of the robustness of the K quantum number is demonstrated by the observed competition between E1 and E3 decay modes in 180Hf, the heaviest stable isotope of the element

Inelastic excitation of new high-spin yrast isomers in 180Ta

For the first time, six-quasiparticle isomers have been observed in the meta-stable nucleus 18073Ta107. Two new high-spin isomers were populated following deep-inelastic reactions with a pulsed 23892U beam incident on a thick 18072Hf target. Out-of-beam γ-ray events were collected using the Gammasphere germanium detector array. In addition to the known four-quasiparticle isomers, yrast Kπ = (22-) and K≥23 six-quasiparticle isomers have been observed with microsecond half-lives. These are the highest-spin isomers observed using the technique of deep-inelastic excitation. The assignments are compared to predictions made by BCS and Lipkin-Nogami multiquasiparticle calculations

Yrast three-quasiparticle K isomers in neutron-rich 181Hf

New high-K orbitals have been identified in the neutron-rich 181Hf nucleus via one-neutron transfer from a pulsed 238U beam onto a stable 180Hf target. Yrast three-quasiparticle high-K isomers, with half-lives as long as 1.5 ms, have been populated. The decay scheme of 181Hf has been extended to (25/2-). Blocked BCS calculations, including residual interactions, compare well with the experimental results

Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at sqrt(s) = 7 TeV with the ATLAS experiment

This paper describes an analysis of the angular distribution of W->enu and W->munu decays, using data from pp collisions at sqrt(s) = 7 TeV recorded with the ATLAS detector at the LHC in 2010, corresponding to an integrated luminosity of about 35 pb^-1. Using the decay lepton transverse momentum and the missing transverse energy, the W decay angular distribution projected onto the transverse plane is obtained and analysed in terms of helicity fractions f0, fL and fR over two ranges of W transverse momentum (ptw): 35 < ptw < 50 GeV and ptw > 50 GeV. Good agreement is found with theoretical predictions. For ptw > 50 GeV, the values of f0 and fL-fR, averaged over charge and lepton flavour, are measured to be : f0 = 0.127 +/- 0.030 +/- 0.108 and fL-fR = 0.252 +/- 0.017 +/- 0.030, where the first uncertainties are statistical, and the second include all systematic effects.Comment: 19 pages plus author list (34 pages total), 9 figures, 11 tables, revised author list, matches European Journal of Physics C versio

Observation of a new chi_b state in radiative transitions to Upsilon(1S) and Upsilon(2S) at ATLAS

The chi_b(nP) quarkonium states are produced in proton-proton collisions at the Large Hadron Collider (LHC) at sqrt(s) = 7 TeV and recorded by the ATLAS detector. Using a data sample corresponding to an integrated luminosity of 4.4 fb^-1, these states are reconstructed through their radiative decays to Upsilon(1S,2S) with Upsilon->mu+mu-. In addition to the mass peaks corresponding to the decay modes chi_b(1P,2P)->Upsilon(1S)gamma, a new structure centered at a mass of 10.530+/-0.005 (stat.)+/-0.009 (syst.) GeV is also observed, in both the Upsilon(1S)gamma and Upsilon(2S)gamma decay modes. This is interpreted as the chi_b(3P) system.Comment: 5 pages plus author list (18 pages total), 2 figures, 1 table, corrected author list, matches final version in Physical Review Letter