4,455 research outputs found
A study to determine the role of one mental health integrator as she functioned on the instructional staff responsible for the teaching of fundamentals of nursing, Block III, in "X" University School of Nursing.
Thesis (M.S.)--Boston Universit
Secondary atmospheric tau neutrino production
We evaluate the flux of tau neutrinos produced from the decay of pair
produced taus from incident muons using a cascade equation analysis. To solve
the cascade equations, our numerical result for the tau production moment
is given. Our results for the flux of tau neutrinos produced from incident
muons are compared to the flux of tau neutrinos produced via oscillations and
the direct prompt atmospheric tau neutrino flux. Results are given for both
downward and upward going neutrinos fluxes and higher zenith angles are
discussed. We conclude that the direct prompt atmospheric tau neutrino flux
dominates these other atmospheric sources of tau neutrinos for neutrino
energies larger than a few TeV for upward fluxes, and over a wider range of
energy for downward fluxes.Comment: 4 pages, 2 figure
Prompt neutrinos and intrinsic charm at SHiP
We present a new evaluation of the far-forward neutrino plus antineutrino
flux and number of events from charm hadron decays in a 400 GeV proton beam
dump experiment like the Search for Hidden Particles (SHiP). Using
next-to-leading order perturbative QCD and a model for intrinsic charm, we
include intrinsic transverse momentum effects and other kinematic angular
corrections. We compare this flux to a far-forward flux evaluated with
next-to-leading order perturbative QCD, without intrinsic transverse momentum,
that used the angular distribution of charm quarks rather than the neutrinos
from their decays. The tau neutrino plus antineutrino number of events in the
perturbative QCD evaluation is reduced by a factor of about three when
intrinsic transverse momentum and the full decay kinematics are included. We
show that intrinsic charm contributions can significantly enhance the number of
events from neutrinos from charm hadron decays. Measurements of the number of
events from tau neutrino plus antineutrino interactions and of the muon charge
asymmetry as a function of energy can be used to constrain intrinsic charm
models.Comment: 39 pages, 18 figures; v2 with revisions of text for clarity, version
to be published in JHE
Residential Instability and the McKinney-Vento Homeless Children and Education Program: What We Know, Plus Gaps in Research
Reviews the literature on the effects of homelessness and residential instability on academic performance and describes the program designed to mitigate them. Calls for better data collection on the affected children's outcomes and the program's impact
A study of the relationship between a child's adjustment and achievement in grade one,
Thesis (Ed.M.)--Boston Universit
Reconciling neutrino flux from heavy dark matter decay and recent events at IceCube
The IceCube detector has recently reported the observation of 28 events at
previously unexplored energies. While the statistics of the observed events are
still low, these events hint at the existence of a neutrino flux over and above
the atmospheric neutrino background. We investigate the possibility that a
significant component of the additional neutrino flux originates due to the
decay of a very heavy dark matter (VHDM) particle via several possible channels
into standard model particles. We show that a combination of a power law
astrophysical neutrino spectrum and the neutrino flux from the decay of a DM
species of mass in the range TeV improves the fit to the observed
neutrino events than that obtained from a best-fit astrophysical flux alone.
Assuming the existence of an astrophysical background described by the IC
best-fit, we also show that, for the decay of even heavier DM particles
( PeV), the same observations impose significant
constraints on the decay lifetimes. Allowing the astrophysical flux
normalization to vary leads to modifications of these limits, however, there is
still a range of dark matter mass and lifetime that is excluded by the IC
results.Comment: v1: 8 pages, 2 figures, 2 tables. v2: Minimization over
three-parameters (DM mass, lifetime and astrophysical power-law flux
normalization); better statistical quantification of fit-goodness;
conclusions unchanged; 15 pg, 3 figs, 2 tables; version to appear in JHE
Performance analysis of local area networks
A simulation of the TCP/IP protocol running on a CSMA/CD data link layer was described. The simulation was implemented using the simula language, and object oriented discrete event language. It allows the user to set the number of stations at run time, as well as some station parameters. Those parameters are the interrupt time and the dma transfer rate for each station. In addition, the user may configure the network at run time with stations of differing characteristics. Two types are available, and the parameters of both types are read from input files at run time. The parameters include the dma transfer rate, interrupt time, data rate, average message size, maximum frame size and the average interarrival time of messages per station. The information collected for the network is the throughput and the mean delay per packet. For each station, the number of messages attempted as well as the number of messages successfully transmitted is collected in addition to the throughput and mean packet delay per station
Ultrahigh Energy Neutrinos
The ultrahigh energy neutrino cross section is well understood in the
standard model for neutrino energies up to 10 GeV. Test of neutrino
oscillations () from extragalactic sources of
neutrinos are possible with large underground detectors. Measurments of
horizontal air shower event rates at neutrino energies above 10 GeV will
be able to constrain nonstandard model contributions to the neutrino-nucleon
cross section, e.g., from mini-black hole production.Comment: 7 pages, presented at Neutrinos and Implications for Physics Beyond
the Standard Model, Stony Brook, NY, October 11-13, 200
Promoting Awareness of Teen Pregnancy Through Multimedia Storytelling: The Case of Elizabeth House in Ecuador
Advocacy journalism takes the basic principles of journalism — factual integrity, clear concise writing, storytelling, and educating the public — and uses them to tell the story of a particular cause or organization. Advocacy journalism moves one step past the traditional confines of journalism to reach an audience with a particular message. As Reader (2011) said, Objectivity is about presenting what is, but advocacy is about changing what will be (p. 2).
The goal of this project was to use advocacy journalism within a blog platform to raise awareness of the work for the not-for-profit organization, Casa Elizabeth, a home for pregnant teenagers in crisis situations in Quito, Ecuador. The project represents a creative project begun during the summer of 2014 (when the researcher served as an intern living in Casa Elizabeth for two months with five teen moms and their children) and continued through the 2014-2015 school year.
The project was accomplished through a blog that told the stories of the home — the participants\u27, the workers\u27, and mine (as participant-observer journalist) — to gain support for Casa Elizabeth. The blog posts were both in Spanish and English, incorporating media such as photography, audio and info graphics. To measure effectiveness, a record was kept of followers, hits, shares, and the likes of particular posts. This record was used to create a best practices methodology. Conclusions show that consistent posting increases blog participation over time, builds a social media network surrounding the blog and creates a greater reader-investment in the cause
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