For almost the last ten years, the agent-based modelling approach has allowed us to conceptualize and simulate an organized population of agents that have interactions among themselves and with their environment. In the social sciences, such an approach allows us to formalize complex situations with multiple scales (either spatial, temporal or organizational) and heterogeneous agents engaged in...

This paper describes a novel classification method for multistream conversational documents. Documents of contact center dialogues or meetings are often composed of multiple source documents that are transcriptions of the recordings of each speaker’s channel. To enhance the classification performance of such multi-stream conversational documents, three main advances over the previous method are...

Class I KNOTTED-like homeobox (KNOXI) genes are critical for the maintenance of the shoot apical meristem. The expression domain of KNOXI is regulated by ASYMMETRIC LEAVES1/ROUGHSHEATH2/PHANTASTICA (ARP) genes, which are associated with leaf morphology. In the inverted repeat-lacking clade (IRLC) of Fabaceae, the orthologs of LEAFY (LFY) function in place of KNOXI to regulate compound leaf deve...

We adapt and refine the methods developed in [Abr96] and [DGM] in order to establish the sphericity of the Phan geometries defined in [BGHS07] (type Bn) and [GHS03] (type Cn), and their generalizations. As applications of this sphericity we determine the topological finiteness length of the unitary form of the group Sp 2n (F q2 [t, t]) (Theorem 7.1) and give the first published proof of the Pha...

Geometric methods in the theory of Chevalley groups and their generalisations have made tremendous advances during the last few decades. Among the most noteworthy and influential of these advances are the systematic application of the concept of amalgams based on [49], [59], [117], the local-to-global approach [134], ingenious applications of combinatorial topology and geometric group theory (a...

The Password-authenticated key exchange (PAKE) protocols allow parties to share secret keys in an authentic manner based on an easily memorizable password. On the other hand, the protocol should resist all types of password guessing attacks, since the password is of low entropy. Recently Lu Cao proposed a simple three-party password based authenticated key exchange (S-3 PAKE) protocol and claim...

We prove that the complex of proper non-trivial non-degenerate subspaces of a finitedimensional vector space endowed with a non-degenerate sesquilinear form is homotopy equivalent to a wedge of spheres. Additionally, we show that the same is true for a slightly wider class of simplicial complexes, the so-called generalized Phan geometries of type An. These generalized Phan geometries occur as r...