1,711 research outputs found
Connecting Best Practices for Teaching Linguistically and Culturally Diverse International Students with International Student Satisfaction and Student Perceptions of Student Learning
This paper explores promising teaching practices for teaching linguistically and culturally-diverse international students by identifying the teaching practices that have high levels of international student satisfaction and student perceptions of learning. This study is based on the belief that the most effective teaching practices are where promising teaching practices, student satisfaction, and student perceptions of learning meet. Researchers used a mixed-methods research design that included an online-survey questionnaire, focus-group discussions, and individual interviews. All of the promising teaching practices identified as having high levels of student satisfaction have medium/high perceptions of student learning. Some of the promising teaching practices with high levels of student perceptions of learning have moderate levels of student satisfaction. Recommendations for professional practice are presented along with potential areas for further research
Transition Probability Matrix Methodology for Incremental Risk Charge
As part of Basel II's incremental risk charge (IRC) methodology, this paper
summarizes our extensive investigations of constructing transition probability
matrices (TPMs) for unsecuritized credit products in the trading book. The
objective is to create monthly or quarterly TPMs with predefined sectors and
ratings that are consistent with the bank's Basel PDs. Constructing a TPM is
not a unique process. We highlight various aspects of three types of
uncertainties embedded in different construction methods: 1) the available
historical data and the bank's rating philosophy; 2) the merger of one-year
Basel PD and the chosen Moody's TPMs; and 3) deriving a monthly or quarterly
TPM when the generator matrix does not exist. Given the fact that TPMs and
specifically their PDs are the most important parameters in IRC, it is our view
that banks may need to make discretionary choices regarding their methodology,
with uncertainties well understood and managed
Measuring Extinction Curves of Lensing Galaxies
We critique the method of constructing extinction curves of lensing galaxies
using multiply imaged QSOs. If one of the two QSO images is lightly reddened or
if the dust along both sightlines has the same properties then the method works
well and produces an extinction curve for the lensing galaxy. These cases are
likely rare and hard to confirm. However, if the dust along each sightline has
different properties then the resulting curve is no longer a measurement of
extinction. Instead, it is a measurement of the difference between two
extinction curves. This "lens difference curve'' does contain information about
the dust properties, but extracting a meaningful extinction curve is not
possible without additional, currently unknown information. As a quantitative
example, we show that the combination of two Cardelli, Clayton, & Mathis (CCM)
type extinction curves having different values of R(V) will produce a CCM
extinction curve with a value of R(V) which is dependent on the individual R(V)
values and the ratio of V band extinctions. The resulting lens difference curve
is not an average of the dust along the two sightlines. We find that lens
difference curves with any value of R(V), even negative values, can be produced
by a combination of two reddened sightlines with different CCM extinction
curves with R(V) values consistent with Milky Way dust (2.1 < R(V) < 5.6). This
may explain extreme values of R(V) inferred by this method in previous studies.
But lens difference curves with more normal values of R(V) are just as likely
to be composed of two dust extinction curves with R(V) values different than
that of the lens difference curve. While it is not possible to determine the
individual extinction curves making up a lens difference curve, there is
information about a galaxy's dust contained in the lens difference curves.Comment: 15 pages, 4 figues, ApJ in pres
Improved test of Lorentz Invariance in Electrodynamics using Rotating Cryogenic Sapphire Oscillators
We present new results from our test of Lorentz invariance, which compares
two orthogonal cryogenic sapphire microwave oscillators rotating in the lab. We
have now acquired over 1 year of data, allowing us to avoid the short data set
approximation (less than 1 year) that assumes no cancelation occurs between the
and parameters from the photon
sector of the standard model extension. Thus, we are able to place independent
limits on all eight and parameters.
Our results represents up to a factor of 10 improvement over previous non
rotating measurements (which independently constrained 7 parameters), and is a
slight improvement (except for ) over results from
previous rotating experiments that assumed the short data set approximation.
Also, an analysis in the Robertson-Mansouri-Sexl framework allows us to place a
new limit on the isotropy parameter of
, an improvement of a factor of 2.Comment: Accepted for publication in Phys. Rev.
Clinical experience with lapatinib in patients with ErbB2-overexpressing metastatic breast cancer
The silicon trypanosome
African trypanosomes have emerged as promising unicellular model organisms for the next generation of systems biology. They offer unique advantages, due to their relative simplicity, the availability of all standard genomics techniques and a long history of quantitative research. Reproducible cultivation methods exist for morphologically and physiologically distinct life-cycle stages. The genome has been sequenced, and microarrays, RNA-interference and high-accuracy metabolomics are available. Furthermore, the availability of extensive kinetic data on all glycolytic enzymes has led to the early development of a complete, experiment-based dynamic model of an important biochemical pathway. Here we describe the achievements of trypanosome systems biology so far and outline the necessary steps towards the ambitious aim of creating a , a comprehensive, experiment-based, multi-scale mathematical model of trypanosome physiology. We expect that, in the long run, the quantitative modelling enabled by the Silicon Trypanosome will play a key role in selecting the most suitable targets for developing new anti-parasite drugs
Variability by Individual Student Characteristics of Student Satisfaction with Promising International Student Teaching Practices
This paper explores promising teaching practices for teaching linguistically and culturally diverse international students by identifying the teaching practices that have high levels of international student satisfaction and student perceptions of learning. Data were collected through an online survey at a mid-sized Canadian public comprehensive university. Variability of student satisfaction by individual student characteristics (e.g., level of study, year of study, age, gender, field of study, country of origin, length of time studying outside country of origin, parents’ educational level, and study location) is presented. Recommendations for professional practice are discusse
Light Water Reactor Sustainability Non-Destrustive Evaluation for Concrete Research and Development Roadmap
Design and Manufacture of a Prototype for a Spiral Magnetic Array Filter
• Fleenor Manufacturing has a patent-pending spiral filter that uses a patented magnetic array to remove magnetic particles from hydraulic fluid
• Fleenor needs experimental data to prove the effectiveness of the filter in controlled condition
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