Neutrino-nucleus interactions in the T2K experiment

We present a study of neutrino-nucleus interactions at the T2K experiment based on the GiBUU transport model. The aim of T2K is to measure $\nu_e$ appearance and $\theta_{13}$, but it will also be able to do a precise measurement of $\nu_\mu$ disappearance. The former requires a good understanding of $\pi^0$ production while the latter is closely connected with a good understanding of quasielastic scattering. For both processes we investigate the influence of nuclear effects and particular final-state interactions on the expected event rates taking into account the T2K detector setup.Comment: v3: matches version to be published in Phys. Rev.

Static and Dynamic Pressure Distributions in a Short Labyrinth Seal

As part of a study into turbine blade tip destabilizing forces, a seals test rig was built in which spin rate, circular whirl rate, direction and amplitude of inlet swirl angle, and eccentricity can all be controlled over wide ranges, and measurements can be made at gap Reynolds numbers up to about 2 x 10(exp 4). This facility is described and preliminary data is presented for a one cavity labyrinth seal with a flat, stator mounted land. The impact of different flow coefficients for the first and second knives on the rotordynamic coefficients was found. While this effect is dominant for the direct forces, it should also be incorporated into calculations of cross forces where it has an impact under many conditions

Cosmological perturbations from inhomogeneous preheating and multi-field trapping

We consider inhomogeneous preheating in a multi-field trapping model. The curvature perturbation is generated by inhomogeneous preheating which induces multi-field trapping at the enhanced symmetric point (ESP), and results in fluctuation in the number of e-foldings. Instead of considering simple reheating after preheating, we consider a scenario of shoulder inflation induced by the trapping. The fluctuation in the number of e-foldings is generated during this weak inflationary period, when the additional light scalar field is trapped at the local maximum of its potential. The situation may look similar to locked or thermal inflation or even to hybrid inflation, but we will show that the present mechanism of generating the curvature perturbation is very different from these others. Unlike the conventional trapped inflationary scenario, we do not make the assumption that an ESP appears at some unstable point on the inflaton potential. This assumption is crucial in the original scenario, but it is not important in the multi-field model. We also discuss inhomogeneous preheating at late-time oscillation, in which the magnitude of the curvature fluctuation can be enhanced to accommodate low inflationary scale.Comment: 18pages, 2 figures, to appear in JHE

Hybrid Curvatons from Broken Symmetry

We present a new general mechanism for generating curvature perturbations after inflation. Our model is based on the simple assumption that a field that starts to oscillate after inflation has a potential characterized by an underlying global symmetry that is slightly or badly broken. Inhomogeneous preheating occurs due to the oscillation with the broken symmetry. Unlike the traditional curvaton model, we will not identify the curvaton with the oscillating field. The curvaton is identified with the preheat field that could be either a scalar, vector, or fermionic field. We introduce an explicit mass term for the curvaton, which is important for later evolution and the decay. Our present model represents the simplest example of the hybrid of the curvatons and inhomogeneous preheating.Comment: 21pages, 5 figures, accepted for publication in JHE

Participatory action research: towards a more fruitful knowledge

This is the final version. Available on open access from the publisher via the link in this recordWakeford and Sanchez Rodriguez’s review is written from the position of individuals who situate themselves as both activists and academics. From a perspective both inside and outside the academy, they make visible the traditions of participatory action research that have evolved in social movements and their interaction with academic knowledge. They explain how PAR emerged as a practice that seeks to intervene and act on the world through disrupting assumptions about who has knowledge, and by building intercultural dialogue between those whose interests have historically been marginalised and those experts and institutions in dominant positions. They discuss the contributions of Paolo Freire and Orlando Fals Borda, as well as the emergence within universities of centres for Action Research and indigenist approaches to research before exploring recent examples of PAR from the Highlander Folk School in the US, to the Cumbrian Hill Farmers post Chernobyl, to questions of Food Sovereignty in India (amongst others)

Structural Invariance and the Energy Spectrum

We extend the application of the concept of structural invariance to bounded time independent systems. This concept, previously introduced by two of us to argue that the connection between random matrix theory and quantum systems with a chaotic classical counterpart is in fact largely exact in the semiclassical limit, is extended to the energy spectra of bounded time independent systems. We proceed by showing that the results obtained previously for the quasi-energies and eigenphases of the S-matrix can be extended to the eigenphases of the quantum Poincare map which is unitary in the semiclassical limit. We then show that its eigenphases in the chaotic case move rather stiffly around the unit circle and thus their local statistical fluctuations transfer to the energy spectrum via Bogomolny's prescription. We verify our results by studying numerically the properties of the eigenphases of the quantum Poincare map for billiards by using the boundary integral method.Comment: 10 pages, 5 figure

Cyberbullying, General Strain Theory, and the Moderating Effect of Anonymity in College Students

Cyberbullying is an intricate and ever-evolving form of bullying. Little is known about how cyberbullying is perpetrated at the collegiate level. Applying a General Strain Theory framework, the current study aims to assess the role of six university-related strain elements as possible predictors for cyberbullying, cybervictimization, and frequency of the two. Survey questionnaires were administered to 15 undergraduate classes at a southeastern university (N = 406). Additionally, the moderating role of internet anonymity on these relationships is addressed. Being threatened with losing or actually losing a scholarship and being placed on probation are identified as significant predictors of cybervictimization and frequency of cybervictimization. Personal academic shortcomings and being threatened with losing or actually losing a scholarship are found to be significant predictors of cyberbullying frequency. Anonymity is established as negatively associated with the frequency of cyberbullying and cybervictimization, but its effect as a moderator is limited, at most

(Over)note-taking in consecutive interpreting

Non peer reviewedPublisher PD

Mapping Out the Licensure Examination for Fisheries Graduates

One of the factors that contributes to the status of an educational institution is the quality of its former students and faculty members. The purpose of this research was to track down former students who had completed their Bachelor of Science in Fisheries degrees at the Cagayan State University in Aparri. During the process of carrying out the study, the research method known as descriptive analysis was put into practice. A good example of the descriptive method of research would be a factfinding study that offered an acceptable and accurate interpretation of the data. The graduate students who took part in the survey were under the notion that the instructional methods utilized by the faculty involved the application of pertinent learning strategies such as positive attitude and critical thinking. The respondents believe that practicing is the single most important step in the process of getting ready for the license examination. Those who had already attended graduate school among the respondents believed that a general education curriculum ought to be regarded essential for passing the LEFT. On the other hand, they argued that the major courses should be seen as having the utmost significance, while NSTP and PE should be regarded as having some significance. Respondents were under the assumption that they were expected to do seatwork, quizzes, major examinations, recitations, assignments, oral and written reports, and portfolios in order to pass the course