Comparison of intraoral and extraoral scanners on the accuracy of digital model articulation

Introduction: Orthodontists increasingly rely on digital models in clinical practice. The ability of modern scanners to articulate digital models must be scientifically evaluated. Methods:Twenty five digital articulated models were produced from four digital scanners in five experimental groups. The resulting inter-arch measurements were compared to the gold standard. An acceptable range of 0.5mm more or less than the gold standard was used for evaluation. Results: iTero® and iTero® Element yielded all acceptable inter-arch measurements. The 3M™ True Definition and Ortho Insight 3D® with Regisil® bite registration produced four of six acceptable inter-arch measurements. The Ortho Insight 3D® with Coprwax ™ bite registration yielded three of six acceptable inter-ach measurements. Conclusions: The iTero® and iTero® Element produced the most accurately articulated models. The 3M™ True Definition and Ortho Insight 3D® with Regisil® were the next most accurate. The Ortho Insight 3D® scanner with Coprwax ™ was the least accurate method tested

The migrants, me and you: the artistic interpretation of being placed and being displaced

The Migrants, Me and You is a creative practice-based study which explores the states of being placed and being displaced in the context of human migration and how these can be visually represented. It provides new insights into the roles that identity and displacement play in the creative process (as artists, how we are placed/displaced); whether artwork created from personal experience can become representative of the stories of others (how they are placed/displaced); and how viewers are placed or displaced by artwork which tackles difficult issues like migration

Anything goes: 2011: A concert of Cole Porter Songs (additional material)

Develop new material for concert for the Orpheus Choir Wellington for performance at the Wellington Town Hall on Oct 7, 2011. The project requires researching, devising and arranging 2 new extended medleys, "You're Sensational Medley" and "It's Too Darn Hot Medley" (a total of around 18 minutes,for Concert Choir and small orchestra editing and preparing score and parts for printing, and adapting existing concert format

International publication of compositions and arrangements for jazz choir: Hey Cinderella; Hold my heart to blame; Anything goes: From the songbook of Cole Porter (2009); Who wants to be a millionaire; and You're sensational medley

Research and develop original compositions “Hey Cinderella” arranged for Adv, Int, and Beginner levels of Jazz Choir (dur. Approx 4-5 minutes) "Hold My Heart To Blame"(selected for the Wisconsin Choral Competitions Song List) and "The Gift Of Love" for publication by Really Good Music LLC., WI., USA. Also arrangements from the concert "Anything Goes: From the songbook of Cole Porter (2009)" - "Cole Porter Latin Medley", "Who Wants To Be A Millionaire" and "You're Sensational Medley" devised and arranged for The Orpheus Choir Wellington NZ, for publication by Really Good Music LLC., WI., USA

The Abundances of Light Neutron-Capture Elements in Planetary Nebulae III. The Impact of New Atomic Data on Nebular Selenium and Krypton Abundance Determinations

The detection of neutron(n)-capture elements in several planetary nebulae (PNe) has provided a new means of investigating s-process nucleosynthesis in low-mass stars. However, a lack of atomic data has inhibited accurate trans-iron element abundance determinations in astrophysical nebulae. Recently, photoionization and recombination data were determined for Se and Kr, the two most widely detected n-capture elements in nebular spectra. We have incorporated these new data into the photoionization code Cloudy. To test the atomic data, numerical models were computed for 15 PNe that exhibit emission lines from multiple Kr ions. We found systematic discrepancies between the predicted and observed emission lines that are most likely caused by inaccurate photoionization and recombination data. These discrepancies were removed by adjusting the Kr$^+$--Kr$^{3+}$ photoionization cross sections within their cited uncertainties and the dielectronic recombination rate coefficients by slightly larger amounts. From grids of models spanning the physical conditions encountered in PNe, we derive new, broadly applicable ionization correction factor (ICF) formulae for calculating Se and Kr elemental abundances. The ICFs were applied to our previous survey of near-infrared [Kr III] and [Se IV] emission lines in 120 PNe. The revised Se and Kr abundances are 0.1-0.3 dex lower than former estimates, with average values of [Se/(O, Ar)]=0.12$\pm$0.27 and [Kr/(O, Ar)]=0.82$\pm$0.29, but correlations previously found between their abundances and other nebular and stellar properties are unaffected. We also find a tendency for high-velocity PNe that can be associated with the Galactic thick disk to exhibit larger s-process enrichments than low-velocity PNe belonging to the thin disk population.Comment: 73 pages, 6 figures, 18 tables, accepted for publication in ApJ

Information and Accountants in the Role of Strategic Planning

This article on strategic planning practices is based upon a field study of five world-class companies. The strategic planning practices discussed in this article were extracted from the corporate environment. The information contained in this article, however, is of value alike to CPAs assisting with the enhancement of strategic planning practices in corporations and public accounting firms

Revisiting He-like X-ray Emission Line Plasma Diagnostics

A complete model of helium-like line and continuum emission has been incorporated into the plasma simulation code Cloudy. All elements between He and Zn are treated, any number of levels can be considered, and radiative and collisional processes are included. This includes photoionization from all levels, line transfer including continuum pumping and destruction by background opacities, scattering, and collisional processes. The model is calculated self-consistently along with the ionization and thermal structure of the surrounding nebula. The result is a complete line and continuum spectrum of the plasma. Here we focus on the ions of the He I sequence and reconsider the standard helium-like X-ray diagnostics. We first consider semi-analytical predictions and compare these with previous work in the low-density, optically-thin limit. We then perform numerical calculations of helium-like X-ray emission (such as is observed in some regions of Seyferts) and predict line ratios as a function of ionizing flux, hydrogen density, and column density. In particular, we demonstrate that, in photoionized plasmas, the $R$-ratio, a density indicator in a collisional plasma, depends on the ionization fraction and is strongly affected by optical depth for large column densities. We also introduce the notion that the $R$-ratio is a measure of the incident continuum at UV wavelengths. The $G$-ratio, which is temperature-sensitive in a collisional plasma, is also discussed, and shown to be strongly affected by continuum pumping and optical depth as well. These distinguish a photoionized plasma from the more commonly studied collisional case.Comment: 28 pages, 7 figures, accepted to Ap