618 research outputs found

    Galois conjugated tensor fusion categories and non-unitary CFT

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    We provide a generalisation of the matrix product operator (MPO) formalism for string-net projected entangled pair states (PEPS) to include non-unitary solutions of the pentagon equation. These states provide the explicit lattice realisation of the Galois conjugated counterparts of (2+1) dimensional TQFTs, based on tensor fusion categories. Although the parent Hamiltonians of these renormalisation group fixed point states are non-Hermitian, many of the topological properties of the states still hold, as a result of the pentagon equation. We show by example that the the topological sectors of the Yang-Lee theory (the non-unitary counterpart of the Fibonacci fusion category) can be constructed even in the absence of closure under Hermitian conjugation of the basis elements of the Ocneanu tube algebra. We argue that this can be generalised to the non-unitary solutions of all SU(2)SU(2) level kk models. The topological sector construction is demonstrated by applying the concept of strange correlators to the Yang-Lee model, giving rise to a non-unitary version of the classical hard hexagon model in the Yang-Lee universality class and obtaining all generalised twisted boundary conditions on a finite cylinder of the Yang-Lee edge singularity.Comment: 5 pages, 1 figur

    Estimation of total height, growth, and mortality of forest trees in Missouri

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    The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.Title from title screen of research.pdf file viewed on (December 13, 2006)Includes bibliographical references.Vita.Thesis (M.S.) University of Missouri-Columbia 2005.Dissertations, Academic -- University of Missouri--Columbia -- Forestry.A model for predicting total tree height as a function of tree diameter was calibrated for twelve tree species common to the Missouri Ozarks. Model coefficients were derived from nearly 10,000 observed trees. The calibrated model did a good job predicting the mean height-diameter trend for each species (pseudo-R2 values ranged from 0.56 to 0.88), but for a given tree diameter observed tree heights were highly variable. In addition, an evaluation of the Central States variant of the Forest Vegetation Simulator (CS-FVS), a distance-independent, single-tree growth model was performed on forest inventory data from a managed, uneven-aged forest in the Missouri Ozark Highlands. Simulations were run for ten and forty year time periods, and evaluated diameter growth, number of trees per acre, and basal area. The model was also evaluated with and without providing diameter increment calibration information. CS-FVS performed reasonably well in predicting diameter growth, as compared to other evaluations of similar models. The model consistently overpredicted the number of trees per acre and basal area for all simulations. The model underpredicted mortality, especially for black and scarlet oak. Diameter increment information improved prediction the most for diameter growth and basal area estimations

    Hymn to St. Joseph (Lootens)

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    Praise of St. Josep

    Evaluating Three Methods of Assessing Adherence to an Inhaled Corticosteroid Regimen for Pediatric Asthma

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    The effects of nonadherence to treatment regimens for pediatric chronic illnesses are significant. There are several characteristics of asthma therapy that make non-adherence likely. Accurate assessment of adherence is crucial, but difficult. The primary objective of this study was to examine the relationship between three methods of assessing adherence to inhaled corticosteroid treatment for pediatric asthma. This study utilized the baseline data from a randomized controlled trial for improving adherence (Kamps et al., 2008). Participants included 22 males and 25 females with asthma (72% Caucasian, mean age = 10.34 years). Adherence measures included parent and child self-report questionnaires, parent and child 24-hour recall interviews, and electronic monitors (EM). Mean adherence according to EM for this sample (67.21%) was significantly greater than 50%, the typical level for adherence to regimens for chronic pediatric diseases (Rapoff, 2010). Thus, this study provides information about moderate (as opposed to severe) difficulties with nonadherence. Results suggested that self-report methods inflate adherence compared to EM. Sensitivity, specificity, positive predictive value, and negative predictive value were assessed for each method. The self-report methods did not demonstrate sufficient psychometric properties to justify their use as stand-alone measures of adherence. Agreement between parent and child reports was high, but not redundant. These findings call for further research investigating ways that methods of assessment may be effectively combined for an accurate measurement of adherence

    Doxology (Lootens)

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    Marianist Doxolog

    Ave Maria (Lootens)

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    Hail Mary in Lati

    A flexible geometric model for leaf shape descriptions with high accuracy

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    Accurate assessment of canopy structure is crucial in studying plant-environment interactions. The advancement of functional-structural plant models (FSPM), which incorporate the 3D structure of individual plants, increases the need for a method for accurate mathematical descriptions of leaf shape. A model was developed as an improvement of an existing leaf shape algorithm to describe a large variety of leaf shapes. Modelling accuracy was evaluated using a spatial segmentation method and shape differences were assessed using principal component analysis (PCA) on the optimised parameters. Furthermore, a method is presented to calculate the mean shape of a dataset, intended for obtaining a representative shape for modelling purposes. The presented model is able to accurately capture a large range of single, entire leaf shapes. PCA illustrated the interpretability of the parameter values and allowed evaluation of shape differences. The model parameters allow straightforward digital reconstruction of leaf shapes for modelling purposes such as FSPMs

    Rocket measurements of electron density, electron temperature and the earth's magnetic field above Fort Churchill

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    Electron density, electron temperature, and earth magnetic field above Fort Churchill from rocket measurement
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