4,950 research outputs found
Infusing thinking skills into an L2 classroom : a case study of an innovation in a Taiwanese university
PhD ThesisEmpirical research on higher-order questions has shown positive impact on student
achievement in L1 and L2 classrooms in western countries and former British colonies.
In association, a world-wide increase in teaching thinking has led to a debate about its
applicability to L2 settings, especially to Asian learners. In Taiwan speaking has been
identified as a problematic area in L2 learning and alongside equipping students with
thinking skills has been highlighted as a goal of Higher Education (HE). Therefore, this
study undertook a case study of an innovation where Higher-Order Thinking Skills
(HOTS) approach was used to try and enhance students' L2 speaking proficiency and
thinking skills. This approach had two steps. In a teacher-led setting the innovator
modelled the tasks to the students which focused on how to answer higher-order
questions, interact and comment on others' opinions. Students then practiced the
thinking tasks in groups as part of their L2 learning. The impact on speaking and
thinking and the effect on students' attitudes were examined to determine the
practicability of this approach in a Taiwanese university L2 classroom. Two classes of
non-English major freshmen participated in this study: one class received the
innovation, while the other class did not. A mixed-method approach was applied and
data collected in three phases: pre-, post- and delayed post-test. In contrast to
Atkinson's (1997) claim that using a critical thinking pedagogy to teach non-native
speakers of English in L2 classrooms is inappropriate, the findings show strong
evidence to support the idea that a HOTS approach enhances learners' speaking and
thinking performance with the majority of students holding positive attitudes. This
indicates infusing thinking skills into the L2 classroom is practicable and students can
be trained as active thinkers. A most significant finding was the occurrence of highcognitive
interactive talk, which created numerous opportunities for speaking and
thinking. This tackled the L2 speaking problems observed and met the goals of HE, i. e.
it equipped university students with thinking skills and encouraged active learnin
Inflation and Growth: Impatience and a Qualitative Equivalence
This paper studies the role of an endogenous time preference on the relationship between inflation and growth in the long run in both the money-in-utility-function (MIUF) and transaction costs (TC) models. We establish a qualitative equivalence between the two models in a setup without a labor-leisure tradeoff. When the time preference is decreasing (or increasing) in consumption and real balances, both the MIUF and TC models are qualitatively equivalent in terms of predicting a negative (or positive) relationship between inflation and growth in a steady state. Both a decreasing and an increasing time preference in consumption are consistent with the arguments in the literature. While a decreasing time preference in real balances corroborates with empirical evidence, there is no evidence in support of an increasing time preference in real balances.endogenous time preferences, superneutrality, qualitative equivalence
Status and Multiple Growth Regimes
In order to explain multiple growth regimes, one of the working hypotheses is based on initial conditions. Using a standard optimal growth with the status effect represented by wealth a la Friedman (1953), this paper obtains multiple growth regimes based on initial conditions without reliance on other assumptions such as nonlinearities of production or consumption functions and heterogeneous agents/savings behavior. With the status effect, the resulting equilibrium distribution is characterized by a group with a lower level of income and another group with a higher level of income. Globally, a sufficiently strong monetary policy may be an instrument in order for an economy in poverty traps to take off and become wealthy in the long run. Locally, our model sheds light on the relationship between money/inflation and capital in the long run that, given general cash-in-advance constraints on investment relative to consumption, is determined by the curvature of the utilities of wealth and consumption.one-sector growth model, wealth effect, CIA constraint, takeoff
A Deterministic Equivalent for the Analysis of Non-Gaussian Correlated MIMO Multiple Access Channels
Large dimensional random matrix theory (RMT) has provided an efficient
analytical tool to understand multiple-input multiple-output (MIMO) channels
and to aid the design of MIMO wireless communication systems. However, previous
studies based on large dimensional RMT rely on the assumption that the transmit
correlation matrix is diagonal or the propagation channel matrix is Gaussian.
There is an increasing interest in the channels where the transmit correlation
matrices are generally nonnegative definite and the channel entries are
non-Gaussian. This class of channel models appears in several applications in
MIMO multiple access systems, such as small cell networks (SCNs). To address
these problems, we use the generalized Lindeberg principle to show that the
Stieltjes transforms of this class of random matrices with Gaussian or
non-Gaussian independent entries coincide in the large dimensional regime. This
result permits to derive the deterministic equivalents (e.g., the Stieltjes
transform and the ergodic mutual information) for non-Gaussian MIMO channels
from the known results developed for Gaussian MIMO channels, and is of great
importance in characterizing the spectral efficiency of SCNs.Comment: This paper is the revision of the original manuscript titled "A
Deterministic Equivalent for the Analysis of Small Cell Networks". We have
revised the original manuscript and reworked on the organization to improve
the presentation as well as readabilit
Comparison of Some Vector Acceleration Techniques
Computing and Information Science
Les sources d’inspiration et les influences dans la musique de Yoshihisa Taira
Le point de départ de cette recherche est la force irrésistible qui se dégage de la musique de Taira Yoshihisa 平義久. Compositeur né à Tōkyō en 1937, il séjourna à Paris depuis son arrivée en 1966 et s’y est éteint en 2005. Avec une œuvre originale de qualité et un catalogue de quatre-vingts opus environ, la musique de Taira lui a valu plusieurs grands prix. Ses œuvres ont été créées dans le cadre des principaux festivals et des institutions de musique contemporaine, en France comme à l’étrange..
Inverse Projection Representation and Category Contribution Rate for Robust Tumor Recognition
Sparse representation based classification (SRC) methods have achieved
remarkable results. SRC, however, still suffer from requiring enough training
samples, insufficient use of test samples and instability of representation. In
this paper, a stable inverse projection representation based classification
(IPRC) is presented to tackle these problems by effectively using test samples.
An IPR is firstly proposed and its feasibility and stability are analyzed. A
classification criterion named category contribution rate is constructed to
match the IPR and complete classification. Moreover, a statistical measure is
introduced to quantify the stability of representation-based classification
methods. Based on the IPRC technique, a robust tumor recognition framework is
presented by interpreting microarray gene expression data, where a two-stage
hybrid gene selection method is introduced to select informative genes.
Finally, the functional analysis of candidate's pathogenicity-related genes is
given. Extensive experiments on six public tumor microarray gene expression
datasets demonstrate the proposed technique is competitive with
state-of-the-art methods.Comment: 14 pages, 19 figures, 10 table
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