自动站月报审核中常见问题分析及对策思考

文章对自动气象站地面月报表数据文件在审核中经常遇到的问题进行了分析总结,针对这些问题提出了相应的解决对策,希望在地面数据质量控制工作中,对避免错情的发生、保证地面月数据文件的质量具有一定的参考。     

Improving Reading Comprehension through Holistic Intervening and Tutoring During After-School with High Risk Minority Elementary School Students

The current study took a quasi-experimental approach investigating the effect of a holistic after-school intervention, on reading comprehension measured by the Gray Oral Reading Test (GORT)-4 on at-risk students in Grade 2 through Grade 5. Analysis of Variance was used to investigate the relationship between pre- and post-intervention scores. The study showed encouraging results. The 91 student participants showed gains in their GORT-4 total scores after the intervention. Results of after-school tutoring lend support to the use of peer-tutoring in afterschool in the elementary schools. Due to the exploratory nature of the study in a single school, there are constraints on generalizability and utility of findings to other schools across the board.     

关于广义Pexider方程解的注记

许多领域的研究离不开函数方程,特别在动力系统和嵌入流中十分重要,函数方程有各种形式,对他们的求解是复杂的,有时甚至是相当困难的。文章首先研究了两类广义Pexider函数方程,对其中一类我们用换元法将其转化为已有的Pexider对数方程,从而求得其一般解,对另一类我们采用将方程两端先微分使其转化为微分方程,然后求解微分方程,从而获得了它的二次可微解.     

数学分析在函数方程求解中的应用

问题研究是数学发展和数学创新的动力,也是在大学数学教学过程中提高学生学习兴趣的重要途径.文章针对函数方程的近似求解问题,给出多种算法,这些算法的理论基础是数学分析的一些重要结论.     

基于建构主义理论的高职高专英语口语教学改革--以引进PETS-2级口语为例

本文在建构主义理论指导下,探究高职高专英语口语教学改革的方法,并引进了全国公共英语等级考试（PETS-2级）,作为高职英语口语教改的一种尝试。     

Motivations and solution appropriateness in crowdsourcing challenges for innovation

Crowdsourcing challenges are fast emerging as an effective tool for solving complex innovation problems. The main strength of the crowdsourcing model is that it brings together a large number of diverse people from all over the world to focus on solving a problem. This openness, however, results in a large number of solutions that are not appropriate, and this inhibits organizations from leveraging the value of crowdsourcing efficiently and effectively. It is therefore essential to identify ways to increase the appropriateness of solutions generated in a crowdsourcing challenge. This paper takes a step towards that by exploring what motivates the crowd to participate in these challenges and how these motivations relate to solution appropriateness. Drawing on data from InnoCentive, one of the largest crowdsourcing platforms for innovation problems, this paper shows that the various types of motivation driving crowd members to participate were related in different ways to the appropriateness of the solutions generated. In particular, intrinsic and extrinsic motivation were positively related to appropriateness whereas for learning and prosocial motivation the relationship was negative. The association between social motivation and appropriateness was not significant. The results have important implications for how to better design crowdsourcing challenges.     

Benchmarking oral reading fluency in the early grades in Nguni languages

To prevent children from falling behind in the developmental sequence of reading, a shared vision of what reading success looks like is required. This paper provides the first benchmarks for early grade oral reading fluency that are necessary (albeit not sufficient) to read for meaning in three Nguni languages – isiZulu, isiXhosa and Siswati - belonging to the Southern Bantu family of African languages. In contrast with previous benchmarking methodologies, our approach is informed by a non-parametric analysis of longitudinal early grade reading assessment (EGRA) data, guided by reading development theory. The EGRA-type data used for this analysis is the largest compilation of data on early grade fluency in these languages, with comparative assessments for nearly 14,200 children. Analysing empirical regularities and reading trajectories, we identify a lower fluency threshold of 20 correct words per minute (cwpm) and an upper fluency benchmark of 35 cwpm for the early grades. These benchmarks contribute to guiding curriculum policy, provide specificity to improve tracking of literacy progress and address gaps in the literature on reading in African languages.     

The hidden depths of new word knowledge: Using graded measures of orthographic and semantic learning to measure vocabulary acquisition

We investigated whether the presence of orthography promotes new word learning (orthographic facilitation). In Study 1 (N = 41) and Study 2 (N = 74), children were taught 16 unknown polysyllabic words. Half of the words appeared with orthography present and half without orthography. Learning assessments captured the degree of semantic and orthographic learning; they were administered one week after teaching (Studies 1 and 2), and, unusually, eight months later (Study 1 only). Bayesian analyses indicated that the presence of orthography was associated with more word learning, though this effect was estimated with more certainty for orthographic than semantic learning. Newly learned word knowledge was well retained over time, indicating that our paradigm was sufficient to support long-term learning. Our approach provides an example of how word learning studies can look beyond simple accuracy measures to reveal the cumulative nature of lexical learning.     

一种非线性偏微分方程的小波解法

利用微分算子的紧支撑小波表示,讨论了一种非线性偏微分方程的Daubechies小波解,给出了此类问题的求解步骤,并做出了相应的数值结果。     

一类带有时滞捕食模型解的一致持久性

文章讨论了一类带有扩散和时滞的捕食模型．获得了系统解的一致持久性的条件,并应用特征值理论和抛物方程的比较原理证明了模型解的一致持久性,同时还可以看到系统解的一致持久性与时滞无关．