4,764 research outputs found
Correlation Between Teacher Mindset and Perceptions Regarding Coaching, Feedback, And Improved Instructional Practice
The daily demands placed upon teachers are seemingly endless. Yet, it is the teacherâs skills that are the most important factor in influencing student achievement (Dalton, 1998; National Board for Professional Teaching Standards, 2002; National Commission on Teaching & Americaâs Future, 1996; Ripley, 2010; Stronge, 2007). The topic of coaching has become increasingly common in the field of education as a way to help teachers be effective. Coaches need to support all teachers, regardless of the type of mindset held by the teacher. The purpose of this quantitative study was to understand the correlation between teacher mindset and perceptions regarding coaching, feedback, and improved instructional practice. The overarching question for this research study was aimed at discovering if the mindset of teachers influenced their perceptions of the coaching and feedback process: âDoes the mindset of teachers influence their perception regarding the coaching and feedback process?â There were nine questions guiding this research. Data was gathered through a paper and pencil survey during the spring of 2015. A total of 68 respondents returned completed surveys. Data was analyzed using descriptive statistics, t-tests, Pearsonâs r, one-way ANOVA, and Tukeyâs Post hoc Test. The results found that leaders and coaches had a slightly greater mean in both mindset and perceptions than classroom teachers. Additionally, there was a statistically significant difference in perceptions towards the coaching and feedback process among those currently in leadership positions. Among classroom teachers, there was a correlation between perceptions towards the coaching and feedback process based on years of experience. Further exploration in the area of mindset and issues involving coaching is needed. Both mindset and perceptions about coaching have the ability to impact student achievement. Implications for further research are discussed
Quantum Jumps on a Circle
It is demonstrated that in contrast to the well-known case with a quantum
particle moving freely in a real line, the wave packets corresponding to the
coherent states for a free quantum particle on a circle do not spread but
develop periodically in time. The discontinuous changes during the course of
time in the phase representing the position of a particle can be interpreted as
the quantum jumps on a circle.Comment: LaTeX, 3 PostScript figure
Separation of lymphocytes by electrophoresis under terrestrial conditions and at zero gravity, phase 3
Electrophoretic mobilities (EPM) of peripheral lymphocytes were studied from normal subjects, chronic hemodialysis patients and kidney transplant recipients. A technique to separate B lymphocytes and null cells from non-T lymphocyte preparation was developed. The experiments were designed to determine which subpopulation of the non-T lymphocytes is primarily affected and shows a decreased EPM in chronic hemodialysis patients and kidney transplant recipients
On the uncertainty relations and squeezed states for the quantum mechanics on a circle
The uncertainty relations for the position and momentum of a quantum particle
on a circle are identified minimized by the corresponding coherent states. The
sqeezed states in the case of the circular motion are introduced and discussed
in the context of the uncertainty relations.Comment: 4 figure
Computational challenges in the analysis of ancient DNA
High-throughput sequencing technologies have opened up a new avenue for studying extinct organisms. Here we identify and quantify biases introduced by particular characteristics of ancient DNA samples. These analyses demonstrate the importance of closely related genomic sequence for correctly identifying and classifying bona fide endogenous DNA fragments. We show that more accurate genome divergence estimates from ancient DNA sequence can be attained using at least two outgroup genomes and appropriate filtering
Sequestration of cholesterol within the host late endocytic pathway restricts liver-stage Plasmodium development
While lysosomes are degradative compartments and one of the defenses against invading pathogens, they are also hubs of metabolic activity. Late endocytic compartments accumulate around Plasmodium berghei liver-stage parasites during development, and whether this is a host defense strategy or active recruitment by the parasites is unknown. In support of the latter hypothesis, we observed that the recruitment of host late endosomes (LEs) and lysosomes is reduced in uis4(â) parasites, which lack a parasitophorous vacuole membrane protein and arrest during liver-stage development. Analysis of parasite development in host cells deficient for late endosomal or lysosomal proteins revealed that the NiemannâPick type C (NPC) proteins, which are involved in cholesterol export from LEs, and the lysosome-associated membrane proteins (LAMP) 1 and 2 are important for robust liver-stage P. berghei growth. Using the compound U18666A, which leads to cholesterol sequestration in LEs similar to that seen in NPC- and LAMP-deficient cells, we show that the restriction of parasite growth depends on cholesterol sequestration and that targeting this process can reduce parasite burden in vivo. Taken together, these data reveal that proper LE and lysosome function positively contributes to liver-stage Plasmodium development
Coherent states on spheres
We describe a family of coherent states and an associated resolution of the
identity for a quantum particle whose classical configuration space is the
d-dimensional sphere S^d. The coherent states are labeled by points in the
associated phase space T*(S^d). These coherent states are NOT of Perelomov type
but rather are constructed as the eigenvectors of suitably defined annihilation
operators. We describe as well the Segal-Bargmann representation for the
system, the associated unitary Segal-Bargmann transform, and a natural
inversion formula. Although many of these results are in principle special
cases of the results of B. Hall and M. Stenzel, we give here a substantially
different description based on ideas of T. Thiemann and of K. Kowalski and J.
Rembielinski. All of these results can be generalized to a system whose
configuration space is an arbitrary compact symmetric space. We focus on the
sphere case in order to be able to carry out the calculations in a
self-contained and explicit way.Comment: Revised version. Submitted to J. Mathematical Physic
Theoretical uncertainties for measurements of alpha_s from electroweak observables
One of the most precise measurements of the strong coupling constant
alpha_s(MZ) is obtained in the context of global analyses of precision
electroweak data. This article reviews the sensitivity of different electroweak
observables to alpha_s and describes the perturbative uncertainties related to
missing higher orders. The complete renormalisation scale dependence for the
relevant observables is calculated at next-to-next-to-leading order and a new
method is presented to determine the corresponding perturbative uncertainty for
measurements of alpha_s based on these observables.Comment: v4: Revised version with new tables and figure
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