评测Web使用分析中会话识别的准确度

目前用于用户会话识别的方法主要有两类:基于时限的会话识别和与拓扑结构(超链接)结合的会话识别,这两类方法都是在用户识别的基础上对用户活动作出猜测而得到的。该文提出了一套用于对这些启发式方法所获得的数据的准确程度进行量化的评测系统,不同的估测方法反映不同的数据挖掘应用的需要。最后通过一个实际站点的数据说明了评测系统的识别结果是准确的。     

大学英语听力障碍浅析

大学英语听力一直以来都是大学英语教学的主要内容,但也一直是最让学生感到头疼的问题,究其原因,可大致归纳为语言运用和语篇内容两个方面,本文就这两个方面进行一些尝试性的分析,并为扫除听力障碍提供一些方法和建议。     

量词研究三题

本文认为现代汉语中的量词在语用实践中存在着隐省现象,多功能量词具有表义功能强,使用范围广的特征,理据性量词往往有超常用法。     

论英汉思维模式差异对中国学生英语写作能力的影响

英语写作能力是英语学习者必须掌握的技能之一 ,是英语交流能力的重要表现。本文通过英汉思维模式差异的比较 ,分析其对英汉文体上的影响 ,以期更有效地在教学中提高中国学生的英语写作能力     

Gendering the inequality debate

In the past 30 years, economic inequality has increased to unprecedented levels, and is generating widespread public concern among orthodox, as well as leftist and feminist, thinkers. This article explores the gender dimensions of growing economic inequality, summarises key arguments from feminist economics which expose the inadequacy of current mainstream economic analysis on which ‘development’ is based, and argues for a ‘gender and equality’ approach to economic and social policy in both the global North and South.     

Intercultural education and academic achievement: a framework for school-based policies in multilingual schools

The paper reviews quantitative and qualitative research evidence regarding the relationship between intercultural education and academic achievement among students from socially marginalized communities. Intercultural education is conceptualized as including a focus both on generating understanding and respect for diverse cultural traditions and challenging inequitable distribution of resources and educational opportunities across social groups. As such, intercultural education incorporates notions such as critical literacy and culturally responsive education. By definition, socially marginalized communities have experienced social exclusion and discrimination, often over generations. Thus, educators who adopt an intercultural education orientation are also committed to challenging the operation of coercive relations of power within their school environments. The operation of societal power relations that affect marginalized group students’ academic achievement can be conceptualized along a continuum ranging from structural/societal, through structural/educational, to interpersonal. Structural/societal forms of discrimination are largely outside the scope of what educators can influence directly (e.g. housing segregation). However, the research evidence suggests that educators have considerable power to resist and challenge coercive power relations operating at both structural/educational (e.g. curriculum materials) and interpersonal (e.g. classroom interactions) dimensions of the continuum. Thus, the proposed framework represents an explanatory model to account for patterns of school success and failure among marginalized group students and a predictive model to specify educator behaviors that are likely to promote academic achievement.     

Usage‐Based Pricing and Demand for Residential Broadband

We estimate demand for residential broadband using high‐frequency data from subscribers facing a three‐part tariff. The three‐part tariff makes data usage during the billing cycle a dynamic problem, thus generating variation in the (shadow) price of usage. We provide evidence that subscribers respond to this variation, and we use their dynamic decisions to estimate a flexible distribution of willingness to pay for different plan characteristics. Using the estimates, we simulate demand under alternative pricing and find that usage‐based pricing eliminates low‐value traffic. Furthermore, we show that the costs associated with investment in fiber‐optic networks are likely recoverable in some markets, but that there is a large gap between social and private incentives to invest.     

Aggregating Smallholder Farmers in Emerging Economies

The agricultural sector plays an important role in emerging economies even though most farmers are trapped in the poverty cycle owing to their smallholdings. Aggregating farmers through formal or informal cooperatives (coops) can enable them to: (i) reduce production cost; (ii) increase/stabilize process yield; (iii) increase brand awareness; (iv) eliminate unnecessary intermediaries; and (v) eliminate price uncertainty. To examine whether these effects will benefit the members of such aggregation when they compete with other individual farmers, we present separate models to capture the essence of these five effects. For each effect, we find that it is beneficial for a farmer to be part of the aggregation only when the size of the aggregation is below a certain threshold. Also, while certain effects are beneficial to the market as a whole, other effects are hurtful due to higher market price and/or lower production quantity.     

医学英语中模糊性语言的语用功能

模糊性语言在医学英语的书面语中具有特定的语用功能。使用模糊词语进行书面语表达,可以缩小作者与读者之间的距离,使得作者的研究结果更具有客观性,从而达到保护作者的目的。     

探析《论语》中“是”的用法及其发展流变

"是"是古代汉语中常用的字,在古代汉语与现代汉语中"是"字的用法及意义有很大的差别,这也是汉字发展演变中不可避免的。本文以《论语》中出现的"是"为基础,量化式的总结《论语》中出现的"是",并诠释其意义,掘本溯源,简论"是"产生、发展、直到现在的发展流变。