排序方式： 共有74条查询结果，搜索用时 15 毫秒
21.
Deb Risisky Syed Masood Asghar Madeline Chaffee Nancy DeGennaro 《The Journal of perinatal education》2013,22(3):136-144
A qualitative nonexperimental thematic analysis was conducted at a hospital-based midwifery practice to explore the views of participants in group prenatal care and its impact on pregnancy, birth, and postnatal care. Ten women and three support people, recruited through purposive sampling, shared their feedback on the program. The findings conveyed three broad themes: program experience, midwife relationship, and support. Women enjoyed the opportunity for in-depth learning, and peer-group support led to normalizing of pregnancy concerns. Having support people as participants also helped during pregnancy, birth, and child care. The findings showed the enhanced opportunity for education, learning, and interpersonal support provided by CenteringPregnancy to expectant mothers had a positive impact on their pregnancy experiences. 相似文献
22.
This paper characterizes oscillations found in block pulse function (BPF) domain identification of open loop first-order systems with step input. A useful condition for occurrence of such oscillations is presented mathematically. For any positive value of ‘ah’, oscillations are observed to occur, where h is the width of BPF domain sub-interval and 1/a is the time constant of the first-order system under consideration. 相似文献
23.
Lewis A. Gough Sanjoy K. Deb Danny Brown S. Andy Sparks Lars R. McNaughton 《Journal of sports sciences》2019,37(13):1464-1471
This study investigated the effects of two separate doses of sodium bicarbonate (NaHCO3) on 4 km time trial (TT) cycling performance and post-exercise acid base balance recovery in hypoxia. Fourteen club-level cyclists completed four cycling TT’s, followed by a 40 min passive recovery in normobaric hypoxic conditions (FiO2 = 14.5%) following one of either: two doses of NaHCO3 (0.2 g.kg?1 BM; SBC2, or 0.3 g.kg?1 BM; SBC3), a taste-matched placebo (0.07 g.kg?1 BM sodium chloride; PLA), or a control trial in a double-blind, randomized, repeated-measures and crossover design study. Compared to PLA, TT performance was improved following SBC2 (p = 0.04, g = 0.16, very likely beneficial), but was improved to a greater extent following SBC3 (p = 0.01, g = 0.24, very likely beneficial). Furthermore, a likely benefit of ingesting SBC3 over SBC2 was observed (p = 0.13, g = 0.10), although there was a large inter-individual variation. Both SBC treatments achieved full recovery within 40 min, which was not observed in either PLA or CON following the TT. In conclusion, NaHCO3 improves 4 km TT performance and acid base balance recovery in acute moderate hypoxic conditions, however the optimal dose warrants an individual approach. 相似文献
24.
Sara?C.?HerediaEmail author Erin?Marie?Furtak Deb?Morrison Ian?Parker?Renga 《Journal of Science Teacher Education》2016,27(7):697-716
Formative assessment has been recognized as an essential element of effective classroom practice; as a result, teachers are increasingly required to create formative assessments for their classrooms. This study examines data drawn from a long-term, site-based professional development program that supported a department of biology teachers in the iterative design and enactment of common formative assessment tools. We analyze teacher conversations to understand how teachers collaborated to design formative assessments. Results indicate that when teachers attended to problems of practice related to teaching evolution, increased transparency in their talk helped build consensus about the design of formative assessment tools. These results highlight the importance of encouraging transparency in teacher dialog when they are engaged in collaborative design of formative assessments. 相似文献
25.
This study uses theory-based design principles to evaluate the effectiveness of an instructional simulation, simSchool. It begins by examining the simulation and evaluation literature, followed by an evaluation of the simSchool software. It is a Web-based simulation designed to emulate various students (reactions) in order to provide practice for pre-service teachers in instructional planning, assessment, and communication. This article uses a framework to analyze the simulation, according to the simulation's instructional goals and design models. The framework for designing a simulation approach to instruction, based on the model-centered instructional theory, provides a detailed model for dissecting the seven functional layers of a simulation. When combined with user testing, results indicated that simSchool provides a valid model of a simulated environment for pre-service teachers to practice instructional activities. 相似文献
26.
Sukanta Deb 《Resonance》2014,19(8):713-739
In this article, I discuss the use of the Variational Monte Carlo technique in the determination of ground state energies of quantum harmonic oscillators in one and three dimensions. In order to provide a better understanding of this technique, a pre-requisite concept of Monte Carlo integration is also discussed along with numerical examples. The technique can be easily extended to study the ground state energies of hydrogen atom, particle in a box, helium atom and other complex microscopic systems involving N particles in d-dimensions. 相似文献
27.
Although refuted many times, the commonly accepted story about Indigenous communities in Australia is that they had few counting words and thus were lacking in ways to quantify amounts. In this paper, we use the case of quantifying to discuss how Indigenous mathematics can be used, not just to help Indigenous students transition into the classroom but also back into their home communities. We argue that mathematics education must take seriously its responsibility to support Indigenous students to gain school mathematics and also to help maintain the use of traditional mathematical ideas. If this does not occur, mathematics educators will contribute, intentionally or unintentionally to the loss of Indigenous knowledge that present and future generations of Indigenous people will hold them responsible for. 相似文献
28.
Lewis A. Gough Sanjoy K. Deb S. Andy Sparks Lars R. McNaughton 《Journal of sports sciences》2018,36(15):1705-1712
The aim of this study was to investigate the effects of sodium bicarbonate (NaHCO3) on 4 km cycling time trial (TT) performance when individualised to a predetermined time to peak blood bicarbonate (HCO3?). Eleven male trained cyclists volunteered for this study (height 1.82 ± 0.80 m, body mass (BM) 86.4 ± 12.9 kg, age 32 ± 9 years, peak power output (PPO) 382 ± 22 W). Two trials were initially conducted to identify time to peak HCO3? following both 0.2 g.kg?1 BM (SBC2) and 0.3 g.kg?1 BM (SBC3) NaHCO3. Thereafter, on three separate occasions using a randomised, double-blind, crossover design, participants completed a 4 km TT following ingestion of either SBC2, SBC3, or a taste-matched placebo (PLA) containing 0.07 g.kg?1 BM sodium chloride (NaCl) at the predetermined individual time to peak HCO3?. Both SBC2 (?8.3 ± 3.5 s; p < 0.001, d = 0.64) and SBC3 (?8.6 ± 5.4 s; p = 0.003, d = 0.66) reduced the time to complete the 4 km TT, with no difference between SBC conditions (mean difference = 0.2 ± 0.2 s; p = 0.87, d = 0.02). These findings suggest trained cyclists may benefit from individualising NaHCO3 ingestion to time to peak HCO3? to enhance 4 km TT performance. 相似文献
29.
This paper presents an optimal fuzzy partition based Takagi Sugeno Fuzzy Model (TSFM) in which a novel clustering algorithm, known as Modified Fuzzy C-Regression Model (MFCRM), has been proposed. The objective function of MFCRM algorithm has been developed by considering of geometrical structure of input data and linear functional relation between input–output data. The MFCRM partitions the data space to create fuzzy subspaces (rules). A new validation criterion has been developed for detecting the right number of rules (subspaces) in a given data set. The obtained fuzzy partition is used to build the fuzzy structure and identify the premise parameters. Once, right number of rules and premise parameters have been identified, then consequent parameters have been identified by orthogonal least square (OLS) approach. The cluster validation index has been tested on synthetic data set. The effectiveness of MFCRM based TSFM has been validated on benchmark examples, such as Boiler Turbine system, Mackey–Glass time series data and Box–Jenkins model. The model performance is also validated through high-dimensional data such as Auto-MPG data and Boston Housing data. 相似文献
30.
Gauldin D 《The Journal of perinatal education》2001,10(2):50-51
A childbirth educator humorously asks why there is always more information to deliver than time in which to deliver it. 相似文献