UNLABELLED We conducted several aviary experiments to investigate the influence of colours in quantity judgments of two species of birds; house crow (Corvus splendens) and common myna (Acridotheres tristis). Different quantity (in seven different food proportions) of mealworms were presented nonsequentially to all birds using artificially coloured red mealworms, for experiment 1, and using arti...

Practical experiences show that only timed and coloured Petri nets are capable of modelling large and complex real-time systems. This is the reason we present the Interval Timed Coloured Petri Net (ITCPN) model. An interval timed coloured Petri net is a coloured Petri net extended with time; time is in tokens and transitions determine a delay for each produced token. This delay is speciied by a...

A digraph D is said to be an m-coloured digraph, if its arcs are coloured with m colours. A directed path (or a directed cycle) is called monochromatic if all of its arcs are coloured alike. A set N ⊆ V (D) of vertices of D is said to be a kernel by monochromatic paths of the m-coloured digraph D, if it satisfies the two following properties : (1) N is independent by monochromatic paths; i.e. f...

A series of amino acid derivatives 8-10, 42 and 43 have been prepared as chromogenic enzyme substrates in order to detect aminopeptidase activity in clinically important Gram-negative and Gram-positive bacteria. Enzymatic hydrolysis liberates the amino acid moiety and either a 4-aminophenol or a 4-dialkylaminoaniline derivative which undergoes oxidative coupling with 1-naphthol or a substituted...

Given an edge colouring of a graph with a set of m colours, we say that the graph is (exactly) m-coloured if each of the colours is used. We consider edge colourings of the complete graph on N with infinitely many colours and show that either one can find an m-coloured complete subgraph for every natural number m or there exists an infinite subset X ⊂ N coloured in one of two canonical ways: ei...

We prove the generalized Ramsey-type result on large 2-coloured matchings in a 3-coloured complete 3-uniform hypergraph, supporting a conjecture by A. Gyárfás.

Large scale biometrics projects rely on capturing images/signal from multiple sensors. For example, in India’s Aadhaar project, multiple fingerprint sensors of different make and model are used for data collection. Similarly, in law enforcement applications, different agencies use different fingerprint sensors. These scenarios cause two potential problems: (i) sensor inter-operability and (ii) ...

This work proposes a contribution aiming at probabilistic model estimation, in the setting of distributed, decentralized, data-sharing computer systems. Such systems are developing over the internet, and also exist as sensor networks, for instance. Our general goal consists in estimating a probability distribution over a data set which is distributed into subsets located on the nodes of a distr...

This paper studies some normative relations that hold between actions, their preconditions and effects, with particular attention to connecting what are often called ‘ought be’ norms do’ norms. We use a formal model based on form of transition system ‘coloured labelled system’ (coloured LTS) introduced in series papers by Sergot Craven. Those works have variously presented formalism (an ‘action...

L’article étudie la genèse des idées du linguiste polonais Jan Baudouin de Courtenay sur le mélange langues dans contexte contestation l’école néo-grammairiens à fin xixe siècle. Originaire Pologne alors sous administration russe, s’est illustré surtout monde universitaire et académique il est bien connu pour son rôle les activités Cercle Kazan (1875-1883) où née conception phonème, mais activi...