Elicitation and use of relevance feedback information

The paper presents two approaches to interactively refining user search formulations and their evaluation in the new High Accuracy Retrieval from Documents (HARD) track of TREC-12. The first method consists of asking the user to select a number of sentences that represent documents. The second method consists of showing to the user a list of noun phrases extracted from the initial document set. Both methods then expand the query based on the user feedback. The TREC results show that one of the methods is an effective means of interactive query expansion and yields significant performance improvements. The paper presents a comparison of the methods and detailed analysis of the evaluation results.     

Microfluidics platform for measurement of volume changes in immobilized intestinal enteroids

Intestinal enteroids are ex vivo primary cultured single-layer epithelial cell spheroids of average diameter ∼150 μm with luminal surface facing inward. Measurement of enteroid swelling in response to secretagogues has been applied to genetic testing in cystic fibrosis and evaluation of drug candidates for cystic fibrosis and secretory diarrheas. The current measurement method involves manual addition of drugs and solutions to enteroids embedded in a Matrigel matrix and estimation of volume changes from confocal images of fluorescently stained enteroids. We developed a microfluidics platform for efficient trapping and immobilization of enteroids for quantitative measurement of volume changes. Multiple enteroids are trapped in a “pinball machine-like” array of polydimethylsiloxane posts for measurement of volume changes in unlabeled enteroids by imaging of an extracellular, high-molecular weight fluorescent dye. Measurement accuracy was validated using slowly expanding air bubbles. The method was applied to measure swelling of mouse jejunal enteroids in response to an osmotic challenge and cholera toxin-induced chloride secretion. The microfluidics platform allows for parallel measurement of volume changes on multiple enteroids during continuous superfusion, without an immobilizing matrix, and for quantitative volume determination without chemical labeling or assumptions about enteroid shape changes during swelling.     

Discursive practices of private online tutoring websites in Russia

A recent development in English teaching in Russia is the emergence of private online language-tutoring schools, which offer one-on-one lessons by means of audio/videoconferencing. It remains unclear: (1) how these new providers of educational services are presenting themselves to the potential learners; (2) what ideology they tend to drawn on and (3) whether there is sufficient similarity to conceptualise these websites as exemplars of the same genre. This paper employs the tools of critical discourse analysis (CDA), Genre Theory and Appraisal within the Systemic Functional Linguistics to study the language of 17 websites of private online language schools. The study aims to investigate whether the websites exhibit similar discourse and ideology and whether they might belong to the same ‘genre prototype’. The analysis reveals a considerable thematic, structural and rhetorical similarity between the websites and a high presence of neoliberal ideology.     

Youth Protests against Education Privatization Reforms in Post-Soviet States

This article examines youth protests against education privatization in the post-Soviet countries of Latvia, Russia, and Ukraine. Drawing on a sample of online sources and scholarly articles, this study uses critical discourse analysis and visual methodologies to examine why and how post-Soviet university students have organized to protest against education privatization reforms. The study also critically analyzes visual and discursive representations of youth protests by government officials, mass media, and academia in the post-Soviet education space. The study reveals that while student protesters are deeply concerned about the future of public education, the messages (and images) generated by youth protesters are reappropriated in various ways by mass media, often beyond the control of protesters themselves.     

Academic inbreeding and publication activities of Russian faculty

The literature on the consequences of academic inbreeding shows ambiguous results: some papers show that inbreeding positively influences research productivity measured by the quantity and quality of publications, while others demonstrate the opposite effect. There are contradictory results both in the studies of different countries and within countries. This variety of results makes it impossible to transfer the findings from one academic system to another, and in Russia this problem has been under-explored. This paper focuses on the relationship between inbreeding and publication activity among Russian faculty. The research was conducted using data from the ‘Monitoring of Educational Markets and Organizations’ survey. The results show that there is no significant effect of academic inbreeding on publication productivity: no substantial and robust differences in publication activity between inbreds and non-inbreds have been found. The paper finishes with a discussion of possible explanations inherent in the Russian academic system.