1,858 research outputs found
Tracking in Career Technical Education- Identity of CTE and its Effects on Enrollment Patterns of Higher Achieving Students
This study examines the salient factors contributing to the course selection trends of higher achieving students in career technical education (CTE) classes. While a lack of empirical evidence exists directly addressing the value of CTE classes for higher achieving students, multiple studies examining tracking, future earnings, standardized test score, grade point averages and cognitive theory suggest benefits for higher achieving students in CTE classes. In ABC school district, the perceived value of career technical education classes varies significantly between higher achieving and lower achieving student populations. Additionally, the identity of these classes from the perspective of teachers, parents, guidance counselors and peers has considerable impact on course recommendation for low, middle and high achieving students. An intervention was conducted, which redesigned CTE courses at a pilot high school to fit the IB framework and rebrand the classes in order to attract more high achieving students into the CTE pathways. The findings of the study suggest redesigning and rebranding CTE pathways to create a more rigorous perception of the classes has a positive effect on higher achieving student enrollment into the classes. The results of the study include increased enrollment of higher achieving students, decreased attrition rates of higher achieving students and no significant changes in the enrollment or attrition rates of middle and lower achieving students into CTE pathways
New low power pulse compressed ionosonde at Gibilmanna Ionospheric Observatory
A digital low power pulse compressed ionosonde was developed at the Istituto Nazionale di Geofisica e Vulcanologia
(INGV), Rome, Italy. The aim of this Advanced Ionospheric Sounder, AIS-INGV, is to reduce the transmitted
power and, consequently, weight, size, power consumption and hardware complexity. To compensate the
power reduction the most advanced HF radar techniques such as the pulse compression and a phase coherent integration
are used. The ionosonde is completely programmable and a PC supports the data acquisition, control, storage
and on-line processing. The first prototype was installed at Gibilmanna Ionospheric Observatory (Sicily), an
interesting location in the center of Mediterranean area. The new ionosonde will contribute to ionospheric database
and real time knowledge of South European ionospheric conditions for space weather applications. In this work the
first results (ionograms and autoscaled characteristics) are presented and briefly discussed
Letter of intent for KM3NeT 2.0
The main objectives of the KM3NeT Collaboration are
(
i
)
the discovery and
subsequent observation of high-energy neutrino sources in the Universe and
(
ii
)
the determination of the mass hierarchy of neutrinos. These objectives are
strongly motivated by two recent important discoveries, namely:
(
1
)
the high-
energy astrophysical neutrino signal reported by IceCube and
(
2
)
the sizable
contribution of electron neutrinos to the third neutrino mass eigenstate as
reported by Daya Bay, Reno and others. To meet these objectives, the
KM3NeT Collaboration plans to build a new Research Infrastructure con-
sisting of a network of deep-sea neutrino telescopes in the Mediterranean Sea.
A phased and distributed implementation is pursued which maximises the
access to regional funds, the availability of human resources and the syner-
gistic opportunities for the Earth and sea sciences community. Three suitable
deep-sea sites are selected, namely off-shore Toulon
(
France
)
, Capo Passero
(
Sicily, Italy
)
and Pylos
(
Peloponnese, Greece
)
. The infrastructure will consist
of three so-called building blocks. A building block comprises 115 strings,
each string comprises 18 optical modules and each optical module comprises
31 photo-multiplier tubes. Each building block thus constitutes a three-
dimensional array of photo sensors that can be used to detect the Cherenkov
light produced by relativistic particles emerging from neutrino interactions.
Two building blocks will be sparsely con
fi
gured to fully explore the IceCube
signal with similar instrumented volume, different methodology, improved
resolution and complementary
fi
eld of view, including the galactic plane. One
building block will be densely con
fi
gured to precisely measure atmospheric
neutrino oscillations.
Original content from this work may be used under the ter
Heavy Quarkonium Production in Z Decays
We report measurements of the inclusive production of heavy quarkonium states in decays based on the analysis of 3.6 million hadronic events collected by the L3 detector at LEP. The measurement of inclusive J production and an improved confidence level upper limit on production are presented. In addition, two independent measurements of the ratio, , of prompt J mesons to those from B decay are made using two different isolation cuts to separate prompt J mesons from J mesons produced in the decays of b hadrons. The results are: % \begin{eqnarray} \mathrm{Br}(\mathrm{Z} \rightarrow \mathrm{J} + \mathrm{X}) & = & (3.21 \pm 0.21 \; \mathrm{(stat.)} \; ^{+ 0.19}_{- 0.28} \; \mathrm{(sys.)} ) \times 10^{-3} \; , \nonumber \\ \mathrm{Br}(\mathrm {Z} \rightarrow \Upsilon(\mathrm{1S} + X) & < & 4.4 \times 10^{-5} \; , \nonumber \\ %% f_{\mathrm{p}} & = & (7.1 \pm 2.1 \; \mathrm{(stat.)} \; \pm 1.2 \; \mathrm{(sys.)} \; ^{+1.5}_{-0.8} \;\mathrm{(theo.)} ) \times 10^{-2} \; . \nonumbe
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