2,301 research outputs found
A Study of Teachers\u27 Views of Death Education in the Mattoon, Illinois School District
Teaching children how to cope with death experiences so that they will not ever suffer from prolonged grief is the responsibility shared by all of society. Along with church leaders and parents, teachers, too, must help teach death education. The purpose of this paper was to explore how well equipped teachers are with adequate training and resources to teach death education in the schools. Also, to explore how concerned teachers are with this area of education.
This study was done through the use of a three-page questionnaire which was developed by the writer. The questionnaire was given to all teachers in the elementary, junior high and senior high schools in the Mattoon, Illinois school district. The results of the questionnaire were tabulated to show absolute frequencies and relative frequencies of each item. Pearson correlation coefficients were performed to show relationships in teachers\u27 attitudes with their personal knowledge of death. Coefficients of determination were given where significant correlations were found.
The results of this study indicate that these teachers report that they feel inadequate in their training and resources for dealing with death education. However, teachers in this study said they were open and positive about teaching death education in the classroom.
The implications are that colleges could provide programs in training teachers to deal with death education. Schools could provide inservice and workshops to better train teachers to teach death education
A Study of Teachers\u27 Views of Death Education in the Mattoon, Illinois School District
Teaching children how to cope with death experiences so that they will not ever suffer from prolonged grief is the responsibility shared by all of society. Along with church leaders and parents, teachers, too, must help teach death education. The purpose of this paper was to explore how well equipped teachers are with adequate training and resources to teach death education in the schools. Also, to explore how concerned teachers are with this area of education.
This study was done through the use of a three-page questionnaire which was developed by the writer. The questionnaire was given to all teachers in the elementary, junior high and senior high schools in the Mattoon, Illinois school district. The results of the questionnaire were tabulated to show absolute frequencies and relative frequencies of each item. Pearson correlation coefficients were performed to show relationships in teachers\u27 attitudes with their personal knowledge of death. Coefficients of determination were given where significant correlations were found.
The results of this study indicate that these teachers report that they feel inadequate in their training and resources for dealing with death education. However, teachers in this study said they were open and positive about teaching death education in the classroom.
The implications are that colleges could provide programs in training teachers to deal with death education. Schools could provide inservice and workshops to better train teachers to teach death education
Nitrogen Abundances and the Distance Moduli of the Pleiades and Hyades
Recent reanalyses of HIPPARCOS parallax data confirm a previously noted
discrepancy with the Pleiades distance modulus estimated from main-sequence
fitting in the color-magnitude diagram. One proposed explanation of this
distance modulus discrepancy is a Pleiades He abundance that is significantly
larger than the Hyades value. We suggest that, based on our theoretical and
observational understanding of Galactic chemical evolution, nitrogen abundances
may serve as a proxy for helium abundances of disk stars. Utilizing
high-resolution near-UV Keck/HIRES spectroscopy, we determine N abundances in
the Pleiades and Hyades dwarfs from NH features in the 3330 Ang region. While
our Hyades N abundances show a modest 0.2 dex trend over a 800 K Teff range, we
find the Pleiades N abundance (by number) is 0.13+/-0.05 dex lower than in the
Hyades for stars in a smaller overlapping Teff range around 6000 K; possible
systematic errors in the lower Pleiades N abundance result are estimated to be
at the <0.10 dex level. Our results indicate [N/Fe]=0 for both the Pleiades and
Hyades, consistent with the ratios exhibited by local Galactic disk field stars
in other studies. If N production is a reliable tracer of He production in the
disk, then our results suggest the Pleiades He abundance is no larger than that
in the Hyades. This finding is supported by the relative Pleiades-Hyades C, O,
and Fe abundances interpreted in the current context of Galactic chemical
evolution, and is resistant to the effects on our derived N abundances of a He
abundance difference like that needed to explain the Pleiades distance modulus
discrepancy. A physical explanation of the Pleiades distance modulus
discrepancy does not appear to be related to He abundance.Comment: Accepted for publication in the Publications of the Astronomical
Society of the Pacifi
Levels of Stress and Characteristics of Perfectionism in CSD Students
An electronic survey was sent to the Midwest Clinic Directors’ Listserv requesting they distribute it to students in their CSD programs. The survey collected information about demographics, and students’ top three stressors and stress management practices. Students were also asked to complete the 10-item Perceived Stress Scale (PSS; Cohen, 1994) and the Almost Perfect Scale-Revised (APS-R; Slaney, Rice, Mobley, Trippi, & Ashby, 2001). A total of 278 CSD undergraduate and graduate students from 15 Midwest institutions responded to the survey. No differences were found between undergraduate and graduate responses to the PSS and the APS-R. Twenty-six percent of the respondents were classified as nonperfectionists, 33% as adaptive perfectionists, and 41% as maladaptive perfectionists. A relationship was found between perceived stress and perfectionism such that respondents with higher levels of perceived stress tended to be classified as maladaptive perfectionists and those with lower levels of perceived stress tended to be classified as adaptive perfectionists. Similarities and differences were found between undergraduates and graduate students in terms of stressors; close to 45% engaged in a stress management practice. Importance of such practices is discussed
Blueprint for Iteratively Hardening Power Grids Employing Unified Power Flow Controllers
A stable electricity supply is vital for modern society. However, many parts of our power transmission grid are operating near their operational limits. Such stressed systems are vulnerable to cascading failures, where a few small faults can induce a cascade of failures potentially leading to a major blackout The unified power flow controller (UPFC), the most powerful highspeed, semi-conductor based power flow device, can be used as a theoretical model to study how these devices can be used to improve power grid resilience. The blueprint presented here can be used to iteratively identify critical weaknesses in power grids and to recommend a means of fixing these weaknesses via the installation of UPFCs. This approach to hardening the power transmission grid will make it less prone to blackouts and better able to forestall or reduce the severity of unavoidable blackouts
Quantifying bamboo coral growth rate nonlinearity with the radiocarbon bomb spike : a new model for paleoceanographic chronology development
© The Author(s), 2017. This is the author's version of the work. It is posted here under a nonexclusive, irrevocable, paid-up, worldwide license granted to WHOI. It is made available for personal use, not for redistribution. The definitive version was published in Deep Sea Research Part I: Oceanographic Research Papers 125 (2017): 26-39, doi:10.1016/j.dsr.2017.04.006.Bamboo corals, long-lived cold water gorgonin octocorals, offer unique paleoceanographic archives of the
intermediate ocean. These Isididae corals are characterized by alternating gorgonin nodes and high Mg-calcite
internodes, which synchronously extend radially. Bamboo coral calcite internodes have been utilized to obtain
geochemical proxy data, however, growth rate uncertainty has made it difficult to construct precise
chronologies for these corals. Previous studies have relied upon a tie point from records of the anthropogenic
Δ14C bomb spike preserved in the gorgonin nodes of live-collected corals to calculate a mean radial extension
rate for the outer ~50 years of skeletal growth. Bamboo coral chronologies are typically constructed by
applying this mean extension rate to the entire coral record, assuming constant radial extension with coral age.
In this study, we aim to test this underlying assumption by analyzing the organic nodes of six California margin
bamboo corals at high enough resolution (<0.5 mm) to identify the Δ14C bomb spike, including two tie points
at 1957 and 1970, plus coral collection date (2007.5) for four samples. Radial extension rates between tie points
ranged from 10 to 204 μm/year, with a decrease in growth rate evident between the 1957-1970 and 1970-
2007.5 periods for all four corals. A negative correlation between growth rate and coral radius (r = -0.7; p =
0.03) was determined for multiple bamboo coral taxa and individuals from the California margin,
demonstrating a decline in radial extension rate with specimen age and size. To provide a mechanistic basis for
these observations, a simple mathematical model was developed based on the assumption of a constant
increase in circular cross sectional area with time to quantify this decline in radial extension rate with coral size
between chronological tie points. Applying the area-based model to our Δ14C bomb spike time series from
individual corals improves chronology accuracy for all live-collected corals with complete Δ14C bomb spikes.
Hence, this study provides paleoceanographers utilizing bamboo corals with a method for reducing age model
uncertainty within the anthropogenic bomb spike era (~1957-present). Chronological uncertainty is larger for
the earliest portion of coral growth, particularly for skeleton precipitated prior to bomb spike tie points,
meaning age estimations for samples living before 1957 remain uncertain. Combining this technique with
additional chronological markers could improve age models for an entire bamboo coral. Finally, the relative
consistency in growth rate in similarly-aged corals of the same depth and location supports the hypothesis that
skeletal growth may be limited by local environmental conditions.This research was made possible
by National Science Foundation Award #1420984 to M. LaVigne and a Clare Boothe Luce Fellowship to M.
Frenkel
Epitaxial (111) Films of Cu, Ni, and Cu_y_2_3$(0001) for Graphene Growth by Chemical Vapor Deposition
Films of (111)-textured Cu, Ni, and CuNi were evaluated as substrates
for chemical vapor deposition of graphene. A metal thickness of 400 nm to 700
nm was sputtered onto a substrate of AlO(0001) at temperatures
of 250 C to 650 C. The films were then annealed at 1000 C in a tube furnace.
X-ray and electron backscatter diffraction measurements showed all films have
(111) texture but have grains with in-plane orientations differing by
. The in-plane epitaxial relationship for all films was
||. Reactive sputtering of Al in
O before metal deposition resulted in a single in-plane orientation over 97
% of the Ni film but had no significant effect on the Cu grain structure.
Transmission electron microscopy showed a clean Ni/AlO interface,
confirmed the epitaxial relationship, and showed that formation of the
twin grains was associated with features on the AlO
surface. Increasing total pressure and Cu vapor pressure during annealing
decreased the roughness of Cu and and CuNi films. Graphene grown on the
Ni(111) films was more uniform than that grown on polycrystalline Ni/SiO
films, but still showed thickness variations on a much smaller length scale
than the distance between grains
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