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Search Results: 1 - 10 of 3464 matches for " Ruth Tarrant "
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Leadership and Faith in a School Tragedy: A School Principal’s Perspective  [PDF]
Ruth Tarrant
Psychology (PSYCH) , 2014, DOI: 10.4236/psych.2014.55051
Abstract:

On April 15, 2008, six students (aged 16 years) and one teacher (aged 29 years) from a New Zealand school lost their lives in a river canyoning tragedy. The present study investigated the school principal’s perspective of how he led his school through the tragedy, and the role of faith in the school’s coping. The school principal was interviewed two years after the event. The school’s Christian foundation was the fundamental source of strength and guidance for the principal, as well as for students, staff, teachers, and families in the immediate aftermath of the tragedy and in the two years following (i.e., to the time of the present study), the Christian culture of the school guiding decision-making. Support from outside the school (e.g. critical incident support; teaching support from other schools; social support from community agencies and civic leaders) also played an important role in assisting the school through the tragedy, particularly in the immediate aftermath of the event. Further studies are required that allow the voices of children, families and school staff to be heard regarding leadership strategies that impact on them through a disaster.

Measuring the quality of MDT working: an observational approach
Cath Taylor, Louise Atkins, Alison Richardson, Ruth Tarrant, Amanda J Ramirez
BMC Cancer , 2012, DOI: 10.1186/1471-2407-12-202
Abstract: Eighteen of the 86 ‘Characteristics of Effective MDTs’ were considered relevant and feasible to observe. They collated to 15 aspects of MDT working covering four domains: the team (e.g. attendance, chairing, teamworking); infrastructure for meetings (venue, equipment); meeting organisation and logistics; and patient-centred clinical decision-making (patient-centredness, clarity of recommendations). Criteria for rating each characteristic from ‘very poor’ to ‘very good’ were derived from literature review, observing MDMs and expert input. Criteria were applied to 10 bowel cancer MDTs to assess acceptability and measure variation between and within teams. Feasibility and inter-rater reliability was assessed by comparing three observers.Observational assessment was acceptable to teams and feasible to implement. Total scores from 29 to 50 (out of 58) highlighted wide diversity in quality between teams. Eight teams were rated either ‘very good/good’ or ‘very poor/poor’ for at least three domains demonstrating some internal consistency. ‘Very good’ ratings were most likely for attendance and administrative preparation, and least likely for patient-centredness of decision-making and prioritisation of complex cases. All except two characteristics had intra-class correlations of ≥0.50.This observational tool (MDT-OARS) may contribute to the assessment of MDT performance. Further testing to confirm validity and reliability is required.
Historical risk measures on stock market indices and energy markets
Wayne Tarrant
Quantitative Finance , 2011,
Abstract: In this paper we look at the efficacy of different risk measures on energy markets and across several different stock market indices. We use both the Value at Risk and the Tail Conditional Expectation on each of these data sets. We also consider several different durations and levels for historical risk measures. Through our results we make some recommendations for a robust risk management strategy that involves historical risk measures.
More Than a Vacation: Short-Term Study Abroad as a Critically Reflective, Transformative Learning Experience  [PDF]
Lane Perry, Lee Stoner, Michael Tarrant
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.35101
Abstract: Over the past decade there have been increasing calls to develop the capacity of United States students to think and act globally (Stearns, 2009). One method of encouraging the civic of global citizenship is through study abroad (Tarrant, 2010). However, the educational value and legitimacy of study abroad, in particular short-term programs, has been questioned (Tarrant & Lyons, 2012). This review and commentary will endeavor to support short-term study abroad as a creative, engaging, and effective educative practice. Building on a proposed theoretical framework grounding investigations focused on study abroad and global citizenship (Tarrant, 2010), a review of literature will examine Dewey’s (1933, 1938) conceptualization of educative experiences as necessary and valuable components for a learner, and Mezirow’s (1991) transformative learning theory (TLT) in connection with the fundamental role that critical reflection serves in both established perspectives of learning. Of particular concern is establishing the alignment between studies abroad, the philosophical and theoretical underpinnings of TLT, and the perspective development of learners in connection with global citizenship. By intentionally connecting Dewey and Mezirow’s conceptualizations of learning with Tarrant’s conceptual framework for studies abroad, a call for further research focusing on the experiences and perspectives of students within short-term study abroad environments can be made.
Viewing Risk Measures as Information
Dominique Gu/'egan,Wayne Tarrant
Quantitative Finance , 2011,
Abstract: Regulation and risk management in banks depend on underlying risk measures. In general this is the only purpose that is seen for risk measures. In this paper we suggest that the reporting of risk measures can be used to determine the loss distribution function for a financial entity. We demonstrate that a lack of sufficient information can lead to ambiguous risk situations. We give examples, showing the need for the reporting of multiple risk measures in order to determine a bank's loss distribution. We conclude by suggesting a regulatory requirement of multiple risk measures being reported by banks, giving specific recommendations.
On the Necessity of Five Risk Measures
Dominique Guégan,Wayne Tarrant
Quantitative Finance , 2011,
Abstract: The banking systems that deal with risk management depend on underlying risk measures. Following the Basel II accord, there are two separate methods by which banks may determine their capital requirement. The Value at Risk measure plays an important role in computing the capital for both approaches. In this paper we analyze the errors produced by using this measure. We discuss other measures, demonstrating their strengths and shortcomings. We give examples, showing the need for the information from multiple risk measures in order to determine a bank's loss distribution. We conclude by suggesting a regulatory requirement of multiple risk measures being reported by banks, giving specific recommendations.
Study of Configural Reasoning and Written Discourse in Geometric Exercises of Proving  [PDF]
Ruth Cueva
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.42007
Abstract:

This article presents a study of configural reasoning and written discourse developed by students of the National Polytechnic School of Ecuador when performing geometrical exercises of proving.

Nuclear receptor complement of the cnidarian Nematostella vectensis: phylogenetic relationships and developmental expression patterns
Adam M Reitzel, Ann M Tarrant
BMC Evolutionary Biology , 2009, DOI: 10.1186/1471-2148-9-230
Abstract: Here we report the first complete set of nuclear receptors from a cnidarian, the starlet sea anemone Nematostella vectensis. Genomic searches using conserved DNA- and ligand-binding domains revealed seventeen nuclear receptors in N. vectensis. Phylogenetic analyses support N. vectensis orthologs of bilaterian nuclear receptors in four nuclear receptor subfamilies within nuclear receptor family 2 (COUP-TF, TLL, HNF4, TR2/4) and one putative ortholog of GCNF (nuclear receptor family 6). Other N. vectensis genes grouped well with nuclear receptor family 2 but represented lineage-specific duplications somewhere within the cnidarian lineage and were not clear orthologs of bilaterian genes. Three nuclear receptors were not well-supported within any particular nuclear receptor family. The seventeen nuclear receptors exhibited distinct developmental expression patterns, with expression of several nuclear receptors limited to a subset of developmental stages.N. vectensis contains a diverse complement of nuclear receptors including orthologs of several bilaterian nuclear receptors. Novel nuclear receptors in N. vectensis may be ancient genes lost from triploblastic lineages or may represent cnidarian-specific radiations. Nuclear receptors exhibited distinct developmental expression patterns, which are consistent with diverse regulatory roles for these genes. Understanding the evolutionary relationships and developmental expression of the N. vectensis nuclear receptor complement provides insight into the evolution of the nuclear receptor superfamily and a foundation for mechanistic characterization of cnidarian nuclear receptor function.Nuclear receptors (NRs) are one of the most abundant classes of transcription factors in metazoans and coordinate diverse processes ranging from developmental patterning to physiological regulation. NRs appear to be restricted to animals because extensive work has shown nuclear receptors are present in all metazoan phyla (e.g., sponges [1,2], c
An assessment of functioning and non-functioning distractors in multiple-choice questions: a descriptive analysis
Marie Tarrant, James Ware, Ahmed M Mohammed
BMC Medical Education , 2009, DOI: 10.1186/1472-6920-9-40
Abstract: Using item-analysis data, we assessed the proportion of non-functioning distractors on a sample of seven test papers administered to undergraduate nursing students. A total of 514 items were reviewed, including 2056 options (1542 distractors and 514 correct responses). Non-functioning options were defined as ones that were chosen by fewer than 5% of examinees and those with a positive option discrimination statistic.The proportion of items containing 0, 1, 2, and 3 functioning distractors was 12.3%, 34.8%, 39.1%, and 13.8% respectively. Overall, items contained an average of 1.54 (SD = 0.88) functioning distractors. Only 52.2% (n = 805) of all distractors were functioning effectively and 10.2% (n = 158) had a choice frequency of 0. Items with more functioning distractors were more difficult and more discriminating.The low frequency of items with three functioning distractors in the four-option items in this study suggests that teachers have difficulty developing plausible distractors for most MCQs. Test items should consist of as many options as is feasible given the item content and the number of plausible distractors; in most cases this would be three. Item analysis results can be used to identify and remove non-functioning distractors from MCQs that have been used in previous tests.Single best-answer multiple-choice questions (MCQs) consist of a question (the stem), two or more choices from which examinees must choose the correct option (the distractors) and one correct or best response (the key) [1]. The MCQ format allows teachers to efficiently assess large numbers of candidates and to test a wide range of content [2,3]. If properly constructed, MCQs are able to test higher levels of cognitive reasoning and can accurately discriminate between high- and low-achieving students [2,4]. It is widely accepted, however, that well-constructed MCQ items are time consuming and difficult to write [5]. Furthermore, there is more to writing good MCQs than writing good quest
Perturbative Reheating After Multiple-Field Inflation: The Impact on Primordial Observables
Joel Meyers,Ewan R. M. Tarrant
Physics , 2013, DOI: 10.1103/PhysRevD.89.063535
Abstract: We study the impact of perturbative reheating on primordial observables in models of multiple-field inflation. By performing a sudden decay calculation, we derive analytic expressions for the local-type non-linearity parameter $f_{\rm NL}^{\rm local}$, the scalar spectral index $n_\zeta$, and the tensor-to-scalar ratio $r_T$ as functions of the decay rates of the inflationary fields. We compare our analytic results to a fully numerical classical field theory simulation, finding excellent agreement. We find that the sensitivity of $f_{\rm NL}$, $n_\zeta$, and $r_T$ to the reheating phase depends heavily on the underlying inflationary model. We quantify this sensitivity, and discuss conditions that must be satisfied if observable predictions are to be insensitive to the dynamics of reheating. We demonstrate that upon completion of reheating, all observable quantities take values within finite ranges, the limits of which are determined completely by the conditions during inflation. Furthermore, fluctuations in both fields play an important role in determining the full dependence of the observables on the dynamics of reheating. By applying our formalism to two concrete examples, we demonstrate that variations in $f_{\rm NL}$, $n_\zeta$, and $r_T$ caused by changes in reheating dynamics are well within the sensitivity of Planck, and as such the impact of reheating must be accounted for when making predictions for models of multiple-field inflation. Our final expressions are very general, encompassing a wide range of two-field inflationary models, including the standard curvaton scenario. Our results allow a much more unified approach to studying two-field inflation including the effects of perturbative reheating. As such, entire classes of models can be studied together, allowing a more systematic approach to gaining insight into the physics of the early universe through observation.
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