Abstract
Two simulated astronomical objects (a star cluster, and a young stellar object) were mock observed with the VLTI for different array configurations and instruments, and their images reconstructed and compared. The aim of the work is to infer when/if phase referencing with less telescopes is a better choice over closure phases with more telescopes. Three scenarios were put under scrutiny: Phase Referencing (PhR) with 2 telescopes vs Closure Phase (CPh) with 3 telescopes, PhR with 3 telescopes vs CPh with 4 telescopes, and PhR with 4 telescopes vs CPh with 6 telescopes. The number of nights is kept fixed for a given PhR vs CPh configuration. The UV-coverage was improved for the PhR case, by uniformly paving the (u, v) plane while keeping fixed the total number of sampled spatial frequencies. For the majority of the configurations, the results point to comparable performances of phase referencing and closure phases, when the UV-space is judiciously chosen.

Abstract
.Abstract algebra has the power to unify seemingly disparate theories once they are encoded into the same abstract formalism. This paper shows how a relation-algebraic rendering of both database dependency theory and Hoare programming logic purports one such unification, in spite of the latter being an algorithmic theory and the former a data theory. The approach equips relational data with functional types and an associated type system which is useful for database operation type checking and optimization. The prospect of a generic, unified approach to both programming and data theories on top of libraries already available in automated deduction systems is envisaged.

Abstract
Service innovation represents a challenge that has to be supported by specific actions of the higher education professionals. At European level, it was promoted by platforms developed under the Europe INNOVA and other initiatives, and it is now an important priority of the Europe 2020 strategy. Therefore, the academic environment should get aligned to this trend and prepare students for the complex character of the future service systems. This paper presents best practices and platforms to support an action programme for getting aligned to the European trends in service innovation, undertaken within the ESF / POSDRU project INSEED (Strategic Programme for promoting Innovation in Services by Open and Continuous Education). The programme has five main objectives, described here through their specific actions and their applied practices, like comprehending the strategies, programmes and organisms related to the European Commission, or analyzing the knowledge gaps. An important result of this programme is the Service Engineering Master (SEM) from the Automation and Computer Science Faculty, University Politehnica of Bucharest, which is related to other educational programmes on service science from Europe. As support for creating a global educational environment, the paper also presents the INSER@SPACE collaborative platform developed by INSEED, with its three components: (i) a learning management system dedicated to educational courses concerning services; (ii) a semantic wild on service science for creating an international community based on a clearly defined knowledge environment; (iii) educational resources provided as a service, with configurations dedicated to learning new technologies for service innovation.

Abstract

Abstract
In this work a strain sensor based on a suspended core fiber is proposed. The sensor comprises a suspended core PCF between SMFs and is based on the multimode interference generated in these transitions. A strain sensitivity study for different sensing heads and stage separation lengths was carried out showing a sensitivity of -2.42 pm/mu epsilon for the best case. Also the sensing head was tested for curvature and temperature, showing in the first case that it is insensitive to curvature effects, and secondly, that for small sensor lengths it was insensitive to temperature variations.

Abstract