Образованието по информатика и ролята на преподавателя в условията на безплатни електронни средства за обучение

Report published in the Proceedings of the National Conference on "Education in the Information Society", Plovdiv, May, 2013Open Educational Resources (OER) are a new phenomenon that may significantly impact higher education, and may even potentially lead to the disappearance of the occupation of university professor. On the other hand, OER have a number of advantages, including adaptive learning and an automatic analysis of the learning process data and thus improvement of the curriculum. The article examines the current state-of-art in education and the related problems. It brings reflections on the impact of the new means on the education in general and on the education in computer science and its specifics in Bulgaria, in particular.Association for the Development of the Information Society, Institute of Mathematics and Informatics Bulgarian Academy of Science

ECONOMIC ASSESSMENT OF THE IMPLEMENTATION MEASURES OF EUROPEAN WATER FRAMEWORK DIRECTIVE

In this article, we analyze the measures against pollution in river basins that follow the European Water Framework Directive (European Commission, 2000) and propose a methodology for assessing their economic effectiveness. Compared to other similar studies (Berbel et al., 2018), the presented methodology has been developed and tested in rivers where water pollution is a result of mining activities. In terms of economic theory, the methodology can be summarized as follows: The cost-effectiveness analysis used to select the optimal mix of costs is integrated into the cost-benefit analysis to assess the cost-effectiveness of the proposed measures. The methodology has been tested on a case study of the East Aegean Region and recommendations for the region have been made for the next five-year period of the Directive

Properties of a firm’s factor demands, optimal production correspondence, and an economy‘s aggregated supply/demand

Many theoretically beautiful conclusions of the producer theory were derived on the common assumption that every firm attempts to maximize its profit and minimize its cost, while all firms employ the same methodology in their optimization efforts. By losing up these two behavioral assumptions and by introducing the concept of value-belief systems for individual firms, this paper reestablishes a few well-known results of the producer theory for the general case of not specifying what criteria of priority a firm holds. At the same time, this paper shows by using counterexamples, among others, that generally, (i) except for a specific scenario, the optimal production correspondence does not satisfy the homogeneity of degree zero, and (ii) even when individuals act in their own best self-interests, they may not collectively produce unintended greater social benefits and public goods. In the end, several topics of expected significance are suggested for future research

Big Data and Education in the Information Society

Report published in the Proceedings of the National Conference on "Education and Research in the Information Society", Plovdiv, June, 2017The big data issue is relatively recent. Under this term are meant data that cannot be processed with the traditional algorithms and software. There are many predictions that big data analysis will become necessary in every field of computer activity, as nowadays it is important to possess abilities to use computer and communication technology. The article discusses ways to educate specialists to analyze big data, with a focus on life-long learning, graduate, undergraduate, and secondary education.Association for the Development of the Information Society, Institute of Mathematics and Informatics Bulgarian Academy of Sciences, Plovdiv University "Paisii Hilendarski

Digital Geometry Algorithms: Theoretical Foundations and Applications to Computational Imaging

Digital geometry emerged as an independent discipline in the second half of the last century. It deals with geometric properties of digital objects and is developed with the unambiguous goal to provide rigorous theoretical foundations for devising new advanced approaches and algorithms for various problems of visual computing. Different aspects of digital geometry have been addressed in the literature. This book is the first one that explicitly focuses on the presentation of the most important digital geometry algorithms. Each chapter provides a brief survey on a major research area related to the general volume theme, description and analysis of related fundamental algorithms, as well as new original contributions by the authors. Every chapter contains a section in which interesting open problems are addressed

A Class of Fibonacci Matrices, Graphs, and Games

In this paper, we define a class of Fibonacci graphs as graphs whose adjacency matrices are obtained by alternating binary Fibonacci words. We show that Fibonacci graphs are close in size to Turán graphs and that their size-stability tradeoff defined as the product of their size and stability number is very close to the maximum possible over all bipartite graphs. We also consider a combinatorial game based on sequential vertex deletions and show that the Fibonacci graphs are extremal regarding the number of rounds in which the game can terminate