The real estate market of EU countries has undergone a severe global financial crisis 2008–2009, recovered successfully later, and now experiencing significant uncertainty due to the COVID-19 pandemic event. Significant volatility business is once again evident, just as it was following crisis. paper aims provide case study project by giving insight into Latvian that had been similar economic u...

We study the role of visual reasoning as a computat iona l ly feasible heuristic too l in geometry prob lem solving. We use an algebraic nota t ion to represent geometric objects and to manipulate them. We show that this representation captures powerfu l heuristics for p rov ing geometry theorems, and that it allows a systematic manipu la t ion of geometric features in a manner similar to what ...

This paper presents a multi-sensor adaptable navigation system for an underwater remotely operated vehicle (ROV). A new multiple Kalman filter strategy is proposed, in which sensors can easily be added and removed from the navigation system without users having to modify the navigation algorithm. Sensors are assigned confidence levels, modifiable by the operator and the algorithm. The results o...

The carnivorous sponge Asbestopluma hypogea, was known only from shallow submarine caves (-15 to -26 m) in the Western Mediterranean Sea and the Adriatic. Herein A. hypogea is reported from outside of caves, on seamounts in the Alboran Sea (-167 m), off the Balearics (-100 m) and north off Sicily (-660 m), and along steep bathyal escarpments in the Strait of Sicily (~700 m). These deeper ROV-ba...

This paper reports the development of a new hydrodynamics test facility for UUV dynamics, navigation, and control research. Located at the Johns Hopkins University, the facility’s 174,000 liter water tank, navigation instrumentation, and testbed ROV provides the ability for development of advanced underwater vehicle systems. Experimental data demonstrating the performance of the facility’s sens...