The Establishment of Quality Assurance Mechanisms at the University of Nis and Other Systemic Changes in Serbian Higher Education

The author, the Rector of the University of Nis in Serbia and Montenegro, describes the recent introduction of quality control mechanisms and other reform measures in his university. These reform measures are intended to help adapt the university to the Bologna Process. The carrying out of these reforms has been aided by a university-wide evaluation that was conducted in 2002 by a team of the European Association of Universities. A second impetus for reform has been the participation of the University of Nis in the activities of the Regional University Network on Governance and Management of Higher Education in South East Europe.     

Waves: a fast multi-tier top-<Emphasis Type="Italic">k</Emphasis> query processing algorithm

In this paper, we present Waves, a novel document-at-a-time algorithm for fast computing of top-k query results in search systems. The Waves algorithm uses multi-tier indexes for processing queries. It performs successive tentative evaluations of results which we call waves. Each wave traverses the index, starting from a specific tier level i. Each wave i may insert only those documents that occur in that tier level into the answer. After processing a wave, the algorithm checks whether the answer achieved might be changed by successive waves or not. A new wave is started only if it has a chance of changing the top-k scores. We show through experiments that such lazy query processing strategy results in smaller query processing times when compared to previous approaches proposed in the literature. We present experiments to compare Waves’ performance to the state-of-the-art document-at-a-time query processing methods that preserve top-k results and show scenarios where the method can be a good alternative algorithm for computing top-k results.     

Equity in Spanish higher education

The most outstanding event in the recent evolution of higher education in developed countries has been the continuously increasing proportion of students entering higher education and, therefore, its extension to more and more inclusive groups. It seems reasonable to assume that the expansion of higher education must have facilitated access of less privileged social classes, but it is important to analyze to what extent this significant increase in higher education participation has reached all social, economic, and cultural groups. This analysis could be useful in designing a policy to help those students who have more difficulty accessing higher education. The goal in this paper is to analyze this subject thoroughly focusing especially on the level of participation of young adults in Spanish higher education controlling for economic level, parental education and occupation, and other environmental characteristics. We present a logistic model which jointly values the influence of different family and social characteristics of the individual on his/her decision to enroll in higher education. The main conclusions of the study are these: (a) There has been improvement in the equity of access to higher education. In spite of this overall improvement, about 30 per cent of the less privileged population is still underrepresented in higher education, (b) Family educational level is the most important factor in the decision to enter higher education. The weight of these educational characteristics exceeds by far the influence of family income level.     

Globalization and Opportunities for Development in Higher Education in South East Europe

The author remarks that globalization is here to stay and that it is much more than a matter of global markets. She points out some of its beneficial aspects in South East Europe. It will, for example, allow members of diasporas from former trouble spots to keep in contact with their home countries by Internet and to assist them. Such positive developments can already be identified in some countries of the region. UNESCO is encouraging such innovations in higher education so as to enable it to benefit from the opportunities offered by new global transforma tions.     

Evaluation of education in the European Union: Policy and methodology

Given the new European institutional environment for education and training, policy and methodology for evaluation have become closely interwoven and stakes have been raised. This emerging situation calls for a robust reappraisal of existing comparative evaluation data and systems in the light of the perceived needs of European countries and of the specificity of European policies. Educational evaluation in Europe is not meant to compare results in the usual sense of the word but rather to help set global policy objectives and provide data to see if those are reached within national contexts. Is it really possible to do this without developing a 'unified' European understanding and methodology of evaluation? To what extent can existing national and international data be used for the purpose, knowing that in some instances they measure aspects of education which are either not relevant for or are contrary to the educational objectives of the construction of the Union? What are the alternatives? What are the consequences for education and for assessment research in Europe?     

Re-bordering comparative education in Latin America: Between global limits and local characteristics

Conceived for presentation at the XIV WCCES conference in Istanbul in 2010, the topic of which was “Bordering Comparative Education”, this paper, within that framework, aims to present the current state of the discipline in Latin America in relation to a quick overview of its present-day situation at a global level. After providing an overview of the current debates on comparative education, with special emphasis on what the authors refer to as motor nuclei (a series of milestones or episodes which have become transdiscursive as the discipline has evolved), as well as pinpointing current challenges in the field, this paper looks into the development of the discipline in Latin America and how it has contributed to the understanding of the region’s educational systems. The paper also examines the unique relationship between comparative studies and the field of educational planning in Latin America. The authors then go on to provide a thematic analysis, categorising the papers presented at three conferences held by the Sociedad Argentina de Estudios Comparados en Educación (SAECE, the Argentine Society for Comparative Education Studies) in 2005, 2007 and 2009. The paper closes with several conclusions regarding the current debate on the discipline in the region and its possibilities for the future.     

Handgrip strength and health outcomes: Umbrella review of systematic reviews with meta-analyses of observational studies

PurposeThe aim of the present study was to assess both the credibility and strength of evidence arising from systematic reviews with meta-analyses of observational studies on handgrip strength and health outcomes.MethodsAn umbrella review of systematic reviews with meta-analyses of observational studies was conducted. We assessed meta-analyses of observational studies based on random-effect summary effect sizes and their p values, 95% prediction intervals, heterogeneity, small-study effects, and excess significance. We graded the evidence from convincing (Class I) to weak (Class IV).ResultsFrom 504 articles returned in a search of the literature, 8 systematic reviews were included in our review, with a total of 11 outcomes. Overall, nine of the 11 of the outcomes reported nominally significant summary results (p < 0.05), with 4 associations surviving the application of the more stringent p value (p < 10⁻⁶). No outcome presented convincing evidence. Three associations showed Class II evidence (i.e., highly suggestive): (1) higher handgrip values at baseline were associated with a minor reduction in mortality risk in the general population (n = 34 studies; sample size = 1,855,817; relative risk = 0.72, 95% confidence interval (95%CI): 0.67–0.78), (2) cardiovascular death risk in mixed populations (n = 15 studies; relative risk = 0.84, 95%CI: 0.78–0.91), and (3) incidence of disability (n = 7 studies; relative risk = 0.76, 95%CI: 0.66–0.87).ConclusionThe present results show that handgrip strength is a useful indicator for general health status and specifically for early all-cause and cardiovascular mortality, as well as disability. To further inform intervention strategies, future research is now required to fully understand mechanisms linking handgrip strength scores to these health outcomes.     

Evaluating collaborative filtering recommendations inside large learning object repositories

Collaborative filtering (CF) algorithms are techniques used by recommender systems to predict the utility of items for users based on the similarity among their preferences and the preferences of other users. The enormous growth of learning objects on the internet and the availability of preferences of usage by the community of users in the existing learning object repositories (LORs) have opened the possibility of testing the efficiency of CF algorithms on recommending learning materials to the users of these communities. In this paper we evaluated recommendations of learning resources generated by different well known memory-based CF algorithms using two databases (with implicit and explicit ratings) gathered from the popular MERLOT repository. We have also contrasted the results of the generated recommendations with several existing endorsement mechanisms of the repository to explore possible relations among them. Finally, the recommendations generated by the different algorithms were compared in order to evaluate whether or not they were overlapping. The results found here can be used as a starting point for future studies that account for the specific context of learning object repositories and the different aspects of preference in learning resource selection.