We report on the first analysis of directed and elliptic flow with the new method of Lee–Yang zeros. Experimental data are presented for Ru+Ru reactions at 1.69A GeV measured with the FOPI detector at SIS/GSI. The results obtained with several methods, based on the event-plane reconstruction, on Lee–Yang zeros, and on multiparticle cumulants (up to fifth order) applied for the first time at SIS energies, are compared. They show conclusive evidence that azimuthal correlations between nucleons and composite particles at this energy are largely dominated by anisotropic flow.

The effect of enhanced filtration on protection citizens staying indoor against airborne radionuclides released during nuclear core melt accidents was determined by field measurements using outdoor particles as simulants. An electrically enhanced filter was installed in the HVAC system of an office building and its removal efficiency for particles was altered by using a separate particle charging section in power on and off positions. The effect of air filtration on indoor particle concentrations was determined by using an automated measurement system which was continuously sampling from the outdoor air, filtered supply air and exhaust air. With the aid of the measured outdoor and modelled indoor concentrations the indoor/outdoor ratio of particles of outdoor origin could be accurately determined. External charging of the particles increased the electret filters removal efficiency for 0.4 µrn size particles from 60% to 95%, resulting in decrease of the average I/O ratio of the same size particles from 0.67 to 0.40. Despite the high improvement in the supply air filtration efficiency the indoor concentrations decreased only modestly which is likely due to the leaky construction of the building, demonstrating the detrimental effect of air infiltration on the protection provided by buildings against outdoor airborne hazards. Practical implications: The developed method allows quantification of the key parameters affecting the protection of buildings against outdoor contaminants, thus allowing accurate estimation of size resolved indoor to outdoor ratios for fine particles. The electrically enhanced filter can remove effectively also submicron particles thus reducing the occupant exposure to outdoor hazardous or harmful materials. Best results can be achieved with airtight buildings.

Searching for and trialling innovative solutions in disaster management is a must. This process challenges certain efforts and requires specific methods since disaster response is a very complex, dynamic, and uncertain environment. Furthermore, the spectrum of solutions that are claimed to have potential to facilitate disaster response is broad enough and constantly increasing. Hence, there is an urgent need for searching and utilisation of new testing methods which are thoroughly tailored to provide possibly utmost reliable, valid, and complete knowledge to disaster management practitioners. The aim of the study is defining whether 3D modelling and orthophotomapping might provide an added value in aerial flood reconnaissance. Thus, an evaluation of a classification model based on 3D modelling and orthophotomapping generated from a UAV flight has been conducted. The analysis was based on results of a full-scale trial with disaster managers’ participation. As explored, the proposed innovation line, only to a certain extent, facilitates decision-making by an increase of decision efficacy. This improvement is impacted by a relative reduction of the efficiency as well as decision time extension in the overall reconnaissance process. Disaster managers are to benefit from the research findings.