Quantifying origin and character of long-range correlations in narrative texts

In natural language using short sentences is considered efficient for communication. However, a text composed exclusively of such sentences looks technical and reads boring. A text composed of long ones, on the other hand, demands significantly more effort for comprehension. Studying characteristics of the sentence length variability (SLV) in a large corpus of world-famous literary texts shows that an appealing and aesthetic optimum appears somewhere in between and involves selfsimilar, cascade-like alternation of various lengths sentences. A related quantitative observation is that the power spectra S(f) of thus characterized SLV universally develop a convincing `1/f^beta' scaling with the average exponent beta =~ 1/2, close to what has been identified before in musical compositions or in the brain waves. An overwhelming majority of the studied texts simply obeys such fractal attributes but especially spectacular in this respect are hypertext-like, "stream of consciousness" novels. In addition, they appear to develop structures characteristic of irreducibly interwoven sets of fractals called multifractals. Scaling of S(f) in the present context implies existence of the long-range correlations in texts and appearance of multifractality indicates that they carry even a nonlinear component. A distinct role of the full stops in inducing the long-range correlations in texts is evidenced by the fact that the above quantitative characteristics on the long-range correlations manifest themselves in variation of the full stops recurrence times along texts, thus in SLV, but to a much lesser degree in the recurrence times of the most frequent words. In this latter case the nonlinear correlations, thus multifractality, disappear even completely for all the texts considered. Treated as one extra word, the full stops at the same time appear to obey the Zipfian rank-frequency distribution, however.Comment: 28 pages, 8 figures, accepted for publication in Information Science

Quantitative Perspectives on Fifty Years of the Journal of the History of Biology

Journal of the History of Biology provides a fifty-year long record for examining the evolution of the history of biology as a scholarly discipline. In this paper, we present a new dataset and preliminary quantitative analysis of the thematic content of JHB from the perspectives of geography, organisms, and thematic fields. The geographic diversity of authors whose work appears in JHB has increased steadily since 1968, but the geographic coverage of the content of JHB articles remains strongly lopsided toward the United States, United Kingdom, and western Europe and has diversified much less dramatically over time. The taxonomic diversity of organisms discussed in JHB increased steadily between 1968 and the late 1990s but declined in later years, mirroring broader patterns of diversification previously reported in the biomedical research literature. Finally, we used a combination of topic modeling and nonlinear dimensionality reduction techniques to develop a model of multi-article fields within JHB. We found evidence for directional changes in the representation of fields on multiple scales. The diversity of JHB with regard to the representation of thematic fields has increased overall, with most of that diversification occurring in recent years. Drawing on the dataset generated in the course of this analysis, as well as web services in the emerging digital history and philosophy of science ecosystem, we have developed an interactive web platform for exploring the content of JHB, and we provide a brief overview of the platform in this article. As a whole, the data and analyses presented here provide a starting-place for further critical reflection on the evolution of the history of biology over the past half-century.Comment: 45 pages, 14 figures, 4 table

The role of stable isotopes in geochemistries of all types

Although I was surprised by the invitation to write a prefatory chapter for the Annual Review of Earth and Planetary Sciences, I decided to accept this opportunity to write about my experiences as a participant in the isotope geochemistry revolution that occurred 40–50 years ago. My own experiences during the early stages of my life were uniquely intertwined with those of many of the leaders of this revolution, and thus I was allowed to witness and participate in many remarkable changes in the science as a whole. In addition, I thought that my contribution might be of some interest to the members of a younger generation, to help them judge whether a scientific career could be interesting, rewarding, and worth working hard for to accomplish something. This chapter also gives me the opportunity to express my appreciation to some of the teachers, early colleagues, and students whose influences were important in my life

The Effects of the EU’s Scientific Cooperation Programmes on the Eastern Partnership Countries: Scientific Output and Broader Societal Impact

Scientific cooperation between the European Union (EU) and its Eastern neighbours has grown rapidly since the early 2000s. This cooperation holds great promise to influence not only the science and innovation sectors, but also to affect the practices and values of research communities in the Eastern Partnership (EaP) countries, their public policies, and societies at large. In this paper we aim to assess the impact of scientific cooperation with the EU with a focus on three countries of the EaP: Belarus, Moldova, and Ukraine. Our analysis is divided into two parts: first, we focus on the scientific impact and conduct a bibliometric analysis that tracks several important indicators of the scientific output of Belarus, Moldova, and Ukraine for the period of 2000-2016; second, we address the broader impact on the scientific community, institutions, and society by analysing new data from expert interviews. In terms of scientific output we find that while the EU has not radically transformed science in the EaP countries it might have provided it with an essential lifeline of support. We also uncover clear evidence for positive impact of cooperation with the EU on the participating institutions from the EaP countries, but very little evidence (so far) about effects on public policies or significant impact on society at large.Horizon 2020(H2020)No. 693382The politics and administration of institutional chang

The Use of Abbreviations in English-Medium Astrophysics Research Paper Titles: A Problematic Issue

In this study, we carry out a qualitative and quantitative analysis of abbreviations in 300 randomly collected research paper titles published in the most prestigious European and US-based Astrophysics journals written in English. Our main results show that the process of shortening words and groups of words is one of the most characteristic and recurrent features in Astrophysics research paper titling construction. In spite of the convenience of abbreviations as a mechanism for word-formation, some of them may pose certain difficulties of understanding and/or misinterpretation because of their specificity, ambiguity, or overlapping. To overcome these difficulties, we propose a series of options which with no doubt would lead to a better interaction among the different branches of Astrophysics in particular and of science in general and would definitely improve how research is currently performed and communicated