The Development and use in a Study of an Instrument to Measure Teacher\u27s Perceptions of Their Effectiveness in Teaching Catholic Moral Principles to Middle and Upper Secondary Students

The purpose of this study was to design an instrument and to use it in a study to measure teachers\u27 perceptions of their effectiveness in teaching Catholic moral principles to middle and upper secondary students. As well, a final version of the instrument based on the results of the study and respondent feedback was to be developed. The study was justified on the following grounds: - less than half of Western Australia\u27s Catholic secondary teachers of Religious Education are qualified to teach Religious Education. - Research findings (Fahy, 1980; Flynn, 1985; Angus, 1988) cast doubt on the effectiveness of moral education within the Catholic middle and upper secondary school. - No studies have measured teachers\u27 perceptions of their effectiveness in teaching Catholic moral principles to senior secondary students. Following the distribution of the initial instrument to respondents, the study\u27s focus was refined from the school to the classroom in Catholic middle and upper secondary moral education. The instrument was revised to accommodate this change in research focus for the purpose of data analysis and its content was based on the Catholic school models of effective teacher behaviour and effective moral education curriculum. The revised instrument was used in a study of 87 respondents from Catholic secondary schools in Western Australia and New South Wales. Cronbach alpha coefficients and face, content and construct validity assessments confirmed the instrument\u27s reliability and validity. Means, t tests and response distribution percentages were obtained to evaluate data. The study found that fewer unqualified teachers than other teachers in the study perceived that their teacher effectiveness, teacher attributes and teaching strategies were effective in Catholic middle and upper secondary moral education. The study also found that less than half of unqualified teachers agreed that the Catholic secondary school\u27s curriculum priorities, and in particular those related to the provision of a comprehensive guide to Catholic moral teachings, were effective for the needs of unqualified teachers of Religious Education in middle and upper secondary classes. Some adjustments were made to the revised instrument following the study. The final instrument is a self administered questionaire. It contains 29 items, 27 of which are six option Likert Scales, including \u27Not Applicable\u27 response options outside the scales. The final instrument was developed, potentially, for use in a larger study to evaluate Catholic middle and upper secondary moral education in Australia

Conversion of Artificial Recurrent Neural Networks to Spiking Neural Networks for Low-power Neuromorphic Hardware

In recent years the field of neuromorphic low-power systems that consume orders of magnitude less power gained significant momentum. However, their wider use is still hindered by the lack of algorithms that can harness the strengths of such architectures. While neuromorphic adaptations of representation learning algorithms are now emerging, efficient processing of temporal sequences or variable length-inputs remain difficult. Recurrent neural networks (RNN) are widely used in machine learning to solve a variety of sequence learning tasks. In this work we present a train-and-constrain methodology that enables the mapping of machine learned (Elman) RNNs on a substrate of spiking neurons, while being compatible with the capabilities of current and near-future neuromorphic systems. This "train-and-constrain" method consists of first training RNNs using backpropagation through time, then discretizing the weights and finally converting them to spiking RNNs by matching the responses of artificial neurons with those of the spiking neurons. We demonstrate our approach by mapping a natural language processing task (question classification), where we demonstrate the entire mapping process of the recurrent layer of the network on IBM's Neurosynaptic System "TrueNorth", a spike-based digital neuromorphic hardware architecture. TrueNorth imposes specific constraints on connectivity, neural and synaptic parameters. To satisfy these constraints, it was necessary to discretize the synaptic weights and neural activities to 16 levels, and to limit fan-in to 64 inputs. We find that short synaptic delays are sufficient to implement the dynamical (temporal) aspect of the RNN in the question classification task. The hardware-constrained model achieved 74% accuracy in question classification while using less than 0.025% of the cores on one TrueNorth chip, resulting in an estimated power consumption of ~17 uW

Patterns, causes, and consequences of marine larval dispersal

Quantifying the probability of larval exchange among marine populations is key to predicting local population dynamics and optimizing networks of marine protected areas. The pattern of connectivity among populations can be described by the measurement of a dispersal kernel. However, a statistically robust, empirical dispersal kernel has been lacking for any marine species. Here, we use genetic parentage analysis to quantify a dispersal kernel for the reef fish Elacatinus lori, demonstrating that dispersal declines exponentially with distance. The spatial scale of dispersal is an order of magnitude less than previous estimates—the median dispersal distance is just 1.7 km and no dispersal events exceed 16.4 km despite intensive sampling out to 30 km from source. Overlaid on this strong pattern is subtle spatial variation, but neither pelagic larval duration nor direction is associated with the probability of successful dispersal. Given the strong relationship between distance and dispersal, we show that distance-driven logistic models have strong power to predict dispersal probabilities. Moreover, connectivity matrices generated from these models are congruent with empirical estimates of spatial genetic structure, suggesting that the pattern of dispersal we uncovered reflects long-term patterns of gene flow. These results challenge assumptions regarding the spatial scale and presumed predictors of marine population connectivity. We conclude that if marine reserve networks aim to connect whole communities of fishes and conserve biodiversity broadly, then reserves that are close in space (<10 km) will accommodate those members of the community that are short-distance dispersers.We thank Diana Acosta, Alben David, Kevin David, Alissa Rickborn, and Derek Scolaro for assistance with field work; Eliana Bondra for assistance with molecular work; and Peter Carlson for assistance with otolith work. We are grateful to Noel Anderson, David Lindo, Claire Paris, Robert Warner, Colleen Webb, and two anonymous reviewers for comments on this manuscript. This work was supported by National Science Foundation (NSF) Grant OCE-1260424, and C.C.D. was supported by NSF Graduate Research Fellowship DGE-1247312. All work was approved by Belize Fisheries and Boston University Institutional Animal Care and Use Committee. (OCE-1260424 - National Science Foundation (NSF); DGE-1247312 - NSF Graduate Research Fellowship)Published versio

Evaluation of the Efficacy and Safety of a Marine-Derived Bacillus Strain for Use as an In-Feed Probiotic for Newly Weaned Pigs

peer-reviewedForty eight individual pigs (8.7±0.26 kg) weaned at 28±1 d of age were used in a 22-d study to evaluate the effect of oral administration of a Bacillus pumilus spore suspension on growth performance and health indicators. Treatments (n = 16) were: (1) non-medicated diet; (2) medicated diet with apramycin (200 mg/kg) and pharmacological levels of zinc oxide (2,500 mg zinc/kg) and (3) B. pumilus diet (non-medicated diet + 1010 spores/day B. pumilus). Final body weight and average daily gain tended to be lower (P = 0.07) and feed conversion ratio was worsened (P<0.05) for the medicated treatment compared to the B. pumilus treatment. Ileal E. coli counts were lower for the B. pumilus and medicated treatments compared to the non-medicated treatment (P<0.05), perhaps as a result of increased ileal propionic acid concentrations (P<0.001). However, the medicated treatment reduced fecal (P<0.001) and cecal (P<0.05) Lactobacillus counts and tended to reduce the total cecal short chain fatty acid (SCFA) concentration (P = 0.10). Liver weights were lighter and concentrations of liver enzymes higher (P<0.05) in pigs on the medicated treatment compared to those on the non-medicated or B. pumilus treatments. Pigs on the B. pumilus treatment had lower overall lymphocyte and higher granulocyte percentages (P<0.001) and higher numbers of jejunal goblet cells (P<0.01) than pigs on either of the other two treatments or the non-medicated treatment, respectively. However, histopathological examination of the small intestine, kidneys and liver revealed no abnormalities. Overall, the B. pumilus treatment decreased ileal E. coli counts in a manner similar to the medicated treatment but without the adverse effects on growth performance, Lactobacillus counts, cecal SCFA concentration and possible liver toxicity experienced with the medicated treatment.The study was funded by the Higher Education Authority/Institutes of Technology Ireland Technological Sector Research Strand III Programme

A Mutational Analysis of Conjugation inTetrahymena thermophila

AbstractConjugation in the freshwater ciliateTetrahymena thermophilainvolves a developmental program that models meiosis, fertilization, and early developmental events characteristic of multicellular eukaryotes. We describe a gallery of five early-acting conjugation mutations. These mutants,cnj1–5,exhibit phenotypes in which specific steps in the conjugal pathway have been altered or eliminated. Specifically,cnj1andcnj2fail to condense their micronuclear chromatin prior to each of the three prezygotic nuclear divisions. This results in nuclear division failure, failure to replicate DNA, and failure to initiate postzygotic development. Thecnj3mutant appears to exhibit a defect in chromosome separation during anaphase of mitosis.cnj4mutants successfully carry out meiosis I, yet are unable to execute the second meiotic division and abort all further development.cnj5mutants are unable to initiate either meiosis I or meiosis II, yet proceed to execute all subsequent developmental events. These mutant phenotypes are used to draw inferences regarding developmental dependencies that exist within the conjugation program

Autism and the double empathy problem: Implications for development and mental health

Autism and the double empathy problem: Implications for development and mental health This article explores how the experience of living in a largely neurotypical society could hinder development of abilities which allow smooth interactions between autistic 1 and neurotypical people. Autism is classified as a lifelong developmental condition marked by difficulties with social communication coupled with a restricted range of interests (DSM-5; APA, 2013). However, a particular aim of the article is to explore how being misunderstood or misperceived by other people could create a barrier to participation in social experiences for the minority-autistic people. We argue that this barrier acts to prevent both groups (autistic and non-autistic people) from having otherwise valuable opportunities to learn about each other's social behaviour and about how to interpret signals emanating from the other group. These signals can be informative about inner states (like what the person is thinking or how they feel-e.g