Usage History of Scientific Literature: Nature Metrics and Metrics of Nature Publications

In this study, we analyze the dynamic usage history of Nature publications over time using Nature metrics data. We conduct analysis from two perspectives. On the one hand, we examine how long it takes before the articles' downloads reach 50%/80% of the total; on the other hand, we compare the percentage of total downloads in 7 days, 30 days, and 100 days after publication. In general, papers are downloaded most frequently within a short time period right after their publication. And we find that compared with Non-Open Access papers, readers' attention on Open Access publications are more enduring. Based on the usage data of a newly published paper, regression analysis could predict the future expected total usage counts.Comment: 11 pages, 5 figures and 4 table

Transient analysis for fractured gas wells by modified pseudo-functions in stress-sensitive reservoirs

Acknowledgments This article was supported by Excellent Supervisor Fund of Basal Research Fund of China University of Geosciences (Beijing) (Grant No. 53200859546), the National Major Research Programme for Science and Technology of China (Grant No. 2011ZX05009-004). The anonymous reviewers and the editors are greatly appreciated for their careful reviews and detailed comments.Peer reviewedPostprin

A Comparative Study of Linguistic Features of English Agricultural Journal Abstracts Written by American and Chinese Scientists

The present study investigated the variations in linguistic features of English academic writing by American and Chinese scientists by building a corpus of 600 English agricultural journal abstracts and using the natural language processing tool Coh-Metrix. Through a one-way Analysis of Variance (ANOVA) and a discriminant function analysis (DFA), we statistically analyzed the corpus texts based on their lexical, syntactic and cohesive features and generated 8 distinguishing linguistic indices. The results indicated that Chinese scientists tended to write abstracts with more frequent words, more similar sentence structures, more modifiers per noun phrase and more agentless passive voice forms, while the American counterparts tended to write abstracts with a wider range of vocabulary, more specific terms, more words with multiple senses and more adversative connectives. These findings offer good guidance for Chinese scientists to write in a style closer to the agricultural research field and the native speakers so as to get their manuscripts better reviewed and more easily published. These findings also have practical implications for the development of agricultural English teaching materials as well as the curriculum design

A Baseline Medium-Scale NK DSGE Model for Policy Analysis

A Baseline Medium-Scale NK DSGE Model for Policy Analysi

A Baseline Medium-Scale NK DSGE Model for Policy Analysis

A Baseline Medium-Scale NK DSGE Model for Policy Analysi

我国“货币中性”再检验

monetary neutrality exerts essential importance on the making of monetary policy targets, and its effect. This paper, by employing IRF and AIRF, tests the characteristic of monetary neutrality in china, plus fluctuation features as well. The testing results show: monetary stock, whatever defined by M0, M1, or M2, presents non-neutrality feature, increase of growth rate of M2 can bring permanent accumulative loss on real output; there is oscillation feature from real output, by giving monetary growth shock. Its underlying policy suggestions are: money in the short-run cannot be taken as stabilizer of economic growth; there are trade-offs between target of economic stable and growth; stable speed of money growth benefits economy stabilizatio