On the Generation of Heronian Triangles

We describe several algorithms for the generation of integer Heronian triangles with diameter at most n. Two of them have running time O(n^(2+ε)). We enumerate all integer Heronian triangles for n ≤ 600000 and apply the complete list on some related problems.

Designing a Cultural Heritage Sector Broker Using SDBC

Among the actual cultural-heritage-related problems is the one of effectively managing and globally distributing digitized cultural (and scientific) information. The only feasible way to realize this goal is via the Internet. Hence, a significant issue to be considered is the adequate design of software applications which to realize brokerage tasks within the global space. However, due to the great complexity of this cultural-heritage- related task (compared to other brokerage tasks successfully realized by software systems), the usage of the existing popular modeling instrumentarium seems inadequate. Hence, in this paper, an approach is presented and it is briefly discussed how the approach could be useful for building cultural heritage sector brokers.

Education in Computer Science and the Role of the Teacher in the Environment of Open Educational Resources

Report published in the Proceedings of the National Conference on "Education in the Information Society", Plovdiv, May, 2013

Maximization of a Linear Utility Function over the Set of the Housing Market Short-Term Equilibria

AMS subject classification: 90C05, 90A14.