80／20效率法则在高校图书馆信息媒体采集中的应用

80/20效率法则又称帕累托法则。80/20法则主张:以一个小的诱因、投入和努力,可以产生大的结果、产出或酬劳。你所完成的工作里80%的成果,来自于你所付出的20%。这一法则被管理界广泛应用。高校图书馆将80/20效率法则运用到信息媒体的采集中,遵循实用性原则、系统性原则、发展与剔除原则、特色化和协调性原则,可使有效的信息媒体发挥更大的作用,实现效益的最大化;使所采集的信息媒体更具实用性、系统性,更适合广大读者的需求,更好地为高校的教学科研服务。     

Refugees from Nazism and Cultural Transfer to Britain

This study accepts that while cultural transfer was obvious in the history of German Jewish settlement in Britain from Nazi Germany during the 1930s, it looks at what four individuals did and what helped them to lay the foundations of a successful career in Britain and make a noticeable contribution to their host society. The essay asks how bewildered refugees overcame social uprooting, isolation in a foreign country, linguistic deficiencies and lack of funds. It demonstrates the importance of relatives and fellow exiles, friends and colleagues, relief organisations and professional associations. The contribution uses the case studies of the journalist Sebastian Haffner, the Germanist Charlotte Jolles, the historian Francis L. Carsten and the industrialist Mac Goldsmith.     

评《宋代文学史》对郑思肖的论述

本文指出《宋代文学史》否定郑思肖《心史》的理由是站不住的 ;同时 ,既然否定了《心史》却又将郑思肖列为宋末著名诗人 ,则是说不通的。     

Constructing identity with L2: Pronunciation and attitudes among Norwegian learners of English1

This study investigates L2 pronunciation and evaluation of American and British varieties of English among Norwegian adolescent learners. By integrating quantitative sociolinguistics and L2 acquisition, the article investigates stylistic practice in an L2 context. Results from an auditory analysis of four phonological variables and a matched‐guise test are interpreted with reference to speaker commentary. Learners’ self‐expressed accent aims correlate significantly with accent use, but American English is the dominant pronunciation. Results show that both L1 and L2 speakers of English varieties are socially evaluated by the learners; British English is considered the most prestigious model of pronunciation, while American English is associated with informality. These evaluations seem to motivate learners’ pronunciation choices. The data indicate blended use of the English varieties. Learners seem to exploit linguistic resources from English, and reshape and adapt the social meaning of the variables to a local construction of identity.     

An adaptive sampling scheme guided by BART—with an application to predict processor performance

The evaluation of new processor designs is an important issue in electrical and computer engineering. Architects use simulations to evaluate designs and to understand trade‐offs and interactions among design parameters. However, due to the lengthy simulation time and limited resources, it is often practically impossible to simulate a full factorial design space. Effective sampling methods and predictive models are required. In this paper, the authors propose an automated performance predictive approach which employs an adaptive sampling scheme that interactively works with the predictive model to select samples for simulation. These samples are then used to build Bayesian additive regression trees, which in turn are used to predict the whole design space. Both real data analysis and simulation studies show that the method is effective in that, though sampling at very few design points, it generates highly accurate predictions on the unsampled points. Furthermore, the proposed model provides quantitative interpretation tools with which investigators can efficiently tune design parameters in order to improve processor performance. The Canadian Journal of Statistics 38: 136–152; 2010 © 2010 Statistical Society of Canada     

近三十年新疆高校少数民族汉语教学研究述评

文章对1979年以来发表在新疆主要刊物和区外核心刊物中的423篇高校少数民族汉语教学研究论文进行了统计分析。在30年的发展中其成绩主要表现在研究基础不断扩大、研究论题走向广泛与细化、研究方法有一定的改进。而存在的主要缺憾是研究内容不深入、研究方法单一,定量和定性研究重视不够等问题。目前新疆高校少数民族汉语教育虽然有较大发展,但在教学上过度依赖对外汉语教学,在研究层次上仍处于相对较低的水平。     

The mad estimator: when is it non-linear? applications to two-way design models

The mean absolute deviation (MAD) estimator has recently received a great deal of attention as applied to full-rank linear regression models. This paper provides a necessary and sufficient condition for the MAD estimator to be a non-linear estimator, in which case conditions for the variance of the MAD estimator to be larger or smaller than those for OLS are, in general, unknown. The non-linearity of the MAD estimator is examined for several two-way designs; in particular (1) randomized block design (2) two-way nested design (3) two-way classification with interaction and (4) partially balanced incomplete block design     

网络渠道交易价值的实证分析——以L品牌手机淘宝BtoC店为例

以国产手机著名品牌L品牌淘宝BtoC店为例,按入口时搜索的关键词的特点,将来访顾客分成渠道忠诚访客和品牌忠诚访客,连续30天观察总的页面浏览量、2种类型的访客数量、分别带来的成交量,以及每日询盘量。对渠道忠诚顾客带来的成交占总成交的比例进行均值估计,得知其比例为38.3%;对2类访客与相应的成交量分别作回归分析,结论均为有显著影响。文章在此基础上对提高网店价值,提出了相应的建议。     

The TRIPs agreement and technological innovation

In this paper we attempt to evaluate the possible spill-over of the international agreement on Trade-Related Aspects of Intellectual Property rights (TRIPs for short), underwritten in 1994, regarding economic growth for both wealthy and developing countries. We find that the TRIPs convention has prompted, at the same time, innovation in developing countries and a rise in the per capita income for all the economies involved in international commerce. As a by-product of our research we find that, despite the strong growth of resident patents application after 1995 (the year in which TRIPs came into force), most of the increase in the gross domestic product per capita in developing countries is attributable to the international transfer of technologies, via foreign direct investments.     

The role of reciprocation in social network formation,with an application to LiveJournal

This paper deals with the role of reciprocation in the formation of individuals’ social networks. We follow the activity of a panel of bloggers over more than a year and investigate the extent to which initiating a relation brings about its reciprocation. We adapt a standard capital investment model to study how reciprocation affects the build-up of the individual social capital of bloggers, as measured by their links and interactions with others. This allows us to measure the role of content production and relationship building in the dynamics of online social networks and to distinguish between the social networking and media aspects of blogging.