Some conclusions of the perception of beneficiaries of european funds for tourism – the case of Romania, North- East Region

In Romania, after 1989, beginning with the transition to market economy, changes tookplace, affecting tourism mainly. As a result, people tried to find solutions torevitalisetourismbyelaborating development policies and marketing strategies. For the European Union, tourismisastrategic economic activity. In what concerns our country, it committed itself by signing theagreement of adhesion to EU. Therefore, the adhesion can be an impulsefor thedevelopment ofRomanian economic and cultural patrimony

Far field model for time reversal and application to selective focusing on small dielectric inhomogeneities

International audienceBased on the time-harmonic far field model for small dielectric inclusions in 3D, we study the so-called DORT method (DORT is the French acronym for ''Diagonalization of the Time Reversal Operator''). The main observation is to relate the eigenfunctions of the time-reversal operator to the location of small scattering inclusions. For non penetrable sound-soft acoustic scatterers, this observation has been rigorously proved for 2 and 3 dimensions by Hazard and Ramdani in 2004 for small scatterers. In this work, we consider the case of small dielectric inclusions with far field measurements. The main difference with the acoustic case is related to the magnetic permeability and the related polarization tensors. We show that in the high-frequency regime, each inhomogeneity gives rise to -at most- 4 distinct eigenvalues (one due to the electric contrast and three to the magnetic one) while each corresponding eigenfunction generates an incident wave focusing selectively on one of the scatterers. The method has connections to the MUSIC algorithm known in Signal Processing and the Factorization Method of Kirsch

Role of Self‐Assembly Conditions and Amphiphilic Balance on Nanoparticle Formation of PEG‐PDLLA Copolymers in Aqueous Environments

The production of well-defined and reproducible poly-meric nanoparticles (NPs), in terms of size and stability in biological environments, is undoubtedly a fundamental challenge in the formulation of novel and more effective nanomedicines. The adoption of PEGylated lactide (LA) block copolymers as biodegradable and biocompatible nanocarriers at different clinical stages has rendered these materials an attractive polymeric platform to be exploited and their formulation is further understood. In the present work, we synthesized a library of linear polyethyl-ene glycol-poly(D,L-lactide) block copolymers with different lengths of LA (15, 25, 50, and 100 LA units) via simple and metal-free ring-opening polymerization, in order to alter the amphi-philic balance of the different macromolecules. The produced polymers were formulated into NPs while varying a series of key parameters in the solvent displacement process, including solvent:nonsolvent ratios and the nature of the two media, and the effect on size and stability was assessed. In addition, stability to protein-NPs interaction and aggregation was studied, highlighting the different NP final properties according to the nature of the amphiphilic balance and nanoformulation conditions. Therefore, we have illustrated a systematic and methodo-logical process to optimize a series of NPs parameters balancing particle size, size distribution, surface charge, and stability to guide future works in the nanoformulation field

Laser-induced temperature rise in a composite sandwich structure

Journal of Mathematical and Computational Science, Vol. 3 Issue 2, pages 577-593, 2013We investigate the transient temperature rise in a composite sandwich structure induced by a stationary, dithering, or rotating laser beam. We restrict our study to the composite sandwich structure with carbon fiber as skin materials and honeycomb as core materials. Our numerical simulations indicate that the maximum temperature rise behaves as a quadratic function of the reciprocal of the skin thickness or the effective beam size

Impressionistic elements in Charles Griffes's Scherzo from Fantasy pieces

There is no abstract available for this creative project.Thesis (M.M.)School of Musi