54,252 research outputs found
Littlest Inverse Seesaw Model
We propose a minimal predictive inverse seesaw model based on two
right-handed neutrinos and two additional singlets, leading to the same low
energy neutrino mass matrix as in the Littlest Seesaw (LS) (type I) model. In
order to implement such a Littlest Inverse Seesaw (LIS) model, we have used an
family symmetry, together with other various symmetries, flavons and
driving fields. The resulting LIS model leads to an excellent fit to the low
energy neutrino parameters, including the prediction of a normal neutrino mass
ordering, exactly as in the usual LS model. However, unlike the LS model, the
LIS model allows charged lepton flavour violating (CLFV) processes and lepton
conversion in nuclei within reach of the forthcoming experiments.Comment: 17 pages, 9 figures. Published versio
The Semiclassical Limit for and Gauge Theory on the Torus
We prove that for and quantum gauge theory on a torus,
holonomy expectation values with respect to the Yang-Mills measure d\mu_T(\o)
=N_T^{-1}e^{-S_{YM}(\o)/T}[{\cal D}\o] converge, as , to
integrals with respect to a symplectic volume measure on the moduli
space of flat connections on the bundle. These moduli spaces and the symplectic
structures are described explicitly.Comment: 18 page
Elemental composition of suspended particulates as functions of space and time in Cleveland, Ohio
An approach to the analysis of a very large elemental concentration data set. The particular data considered was generated by instrumental neutron activation and emission spectroscopy analyses of over 750 24-hour ambient air particulate samples collected at 16 sites in Cleveland, Ohio, during the 15 months from August 1971 thru October 1972. Examples are presented that show the use of multiple approaches to interpreting the data, including pairwise correlation statistics, selective data plotting and cluster analysis
Qubit Channels Can Require More Than Two Inputs to Achieve Capacity
We give examples of qubit channels that require three input states in order
to achieve the Holevo capacity.Comment: RevTex, 5 page, 4 figures
Doing it differently: Engaging interview participants with imaginative variation
Imaginative variation was identified by Husserl (1936/1970) as a phenomenological technique for the purpose of elucidating the manner in which phenomena appear to consciousness. Briefly, by engaging in the phenomenological reduction and using imaginative variation, phenomenologists are able to describe the experience of consciousness, having stepped outside of the natural attitude through the epochÄ. Imaginative variation is a stage aimed at explicating the structures of experience, and is best described as a mental experiment. Features of the experience are imaginatively altered in order to view the phenomenon under investigation from varying perspectives. Husserl argued that this process will reveal the essences of an experience, as only those aspects that are invariant to the experience of the phenomenon will not be able to change through the variation.
Often in qualitative research interviews, participants struggle to articulate or verbalise their experiences. The purpose of this article is to detail a radical and novel way of using imaginative variation with interview participants, by asking the participants to engage with imaginative variation, in order to produce a rich and insightful experiential account of a phenomenon. We will discuss how the first author successfully used imaginative variation in this way in her study of the erotic experience of bondage, discipline, dominance & submission, and sadism & masochism (BDSM), before considering the usefulness of this technique when applied to areas of study beyond sexuality
Rainfall record
Rainfall (including melted snow) at the Experiment Station, from August 1. 1892, to March 1, 1893
Black Widow Pulsars: the Price of Promiscuity
The incidence of evaporating 'black widow' pulsars (BWPs) among all
millisecond pulsars (MSPs) is far higher in globular clusters than in the
field. This implies a special formation mechanism for them in clusters. Cluster
MSPs in wide binaries with WD companions exchange them for turnoff-mass stars.
These new companions eventually overflow their Roche lobes because of
encounters and tides. The millisecond pulsars eject the overflowing gas from
the binary, giving mass loss on the binary evolution timescale. The systems are
only observable as BWPs at epochs where this evolution is slow, making the mass
loss transparent and the lifetime long. This explains why observed BWPs have
low-mass companions. We suggest that at least some field BWPs were ejected from
globular clusters or entered the field population when the cluster itself was
disrupted.Comment: 6 pages, 2 figures, MNRAS in pres
Fit Into College II: Physical Activity and Nutrition Behavior Effectiveness and Programming Recommendations
Purpose: To determine whether residency (living on campus versus off campus) was related to the effects of Fit into College on studentsâ health behaviors, and to understand internsâ perceptions of their roles in mentoring their trainees.
Design: Pre-experimental, one-group, pretest-posttest design and a posttest focus group interview.
Setting: University-offered health and internship courses.
Subjects: Twenty-four students (trainees) participated in the intervention, nine of whom lived on campus. Five student-interns served as their mentors.
Intervention: Fit into College was a 14-week intervention in which trainees teamed up with an intern to improve and/or maintain healthy nutrition and physical activity behaviors.
Measures: Traineesâ nutrition and physical activity behaviors and perceptions were quantitatively assessed through surveys at preintervention and postintervention. Internsâ mentoring perceptions were qualitatively assessed through a focus group interview after the intervention.
Analysis: Two-factor repeated measure ANOVAs and qualitative theme identification.
Results: Regardless of their residency location, the traineesâ perceptions of the health benefits of eating fruits and vegetables improved during the intervention. However, for trainees living on campus, the intervention was not effective in increasing the number of fruits and vegetables consumed or the planning for food preparation. The interns perceived that they did not have adequate access to healthy foods, the knowledge or skills to prepare healthy foods, or the competency to teach food preparation strategies to their trainees. For trainees living on campus, the intervention was more effective in decreasing perceived exercise barriers than trainees living off campus.
Conclusion: Future iterations of Fit into College may focus on 1) improving college studentsâ planning and preparation of healthy foods, 2) segmenting trainees into more homogeneous groups for the interns to tailor their areas of expertise (campus vs. off-campus and/or freshman vs. upperclass students), and 3) collaborating with university-partners to improve environmental conditions to promote physical activity and healthy nutrition
Flood risk management and âfairnessâ: aspirations and reality
Flood risk management in United Kingdom has been going through a process of rapid change in the last decade or so, no doubt spurred on by a series of very serious floods since the year 2000. These changes affect flood defence and non-structural flood risk management measures alike, and involve a degree of devolution from central government to local communities and regional organisations, as central government seeks to shed responsibilities for policy implementation. This paper discusses three case studies concerning flood defence, property level protection, approaches to social justice. The results show a different pattern in each area, with flood defence moving somewhat towards a Rawlsian approach, but flood insurance and property level protection showing signs of both inefficiency and poor penetration, respectively, particularly with regard to low income residents, especially those in social housing
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