The aim of this paper is to describe the example of simulation modelling approach usage for the analysis of Riga airport baggage handling systems (BHS) work. At the first base simulation model was created using ExtendSim software. This model was based on the real passengers' measurements and documents surveys. Further, different scenarios of BHS development were implemented. Different character...

This study considers the transport of microplastics (MPs) from inland waters (rivers and lakes) to coastal then open sea. A three-dimensional MP Eulerian tracer model based on HIROMB-BOOS (HBM) with wave-induced biofouling process is used. Multilayer two-way nested grids 3–0.5–0.25–0.05 nautical mile resolutions are applied resolve relevant riverine–estuarial–coastal hydrodynamics a focus south...

The research focus of the scientific paper is on the problem of equity portfolio construction. The author recommends applying frontier analysis technique such as Data Envelopment Analysis to the performance measurement of emitters. Using modern computer technologies, the author has calculated efficiency score of twenty Baltic companies which are quoted at NASDAQ OMX Riga and NASDAQ OMX Tallinn ...

The paper focuses on the investigation of sigillographic sources — pendant wax seals, that belonged to representatives Livonian Bishops and Archbishops Riga. For investigation, more than 700 seals from Latvian State Historical Archive’s Fund No. 8 “Archives Internal Magistrate Riga” were analyzed. Archbishopric Riga, Bishoprics. Analysis clergy reveal several stages can be distinguished in thei...