Border handling as the most correct dynamic principle of the beginning of the register of immovable cultural heritage development

The correct start of work on developing a spatial data infrastructure of the domain of immovable cultural heritage (CH) of Ukraine is to model the entities boundaries of the CH in the most accessible way at the moment. Created models are used together with the necessary transformations, both in separate systems from the set of CH domain systems, and in several appropriately ordered systems from this set. Many of the required systems are organized into a hierarchy of systems called Atlas Geographic Information System: from public models of CH entities on the Internet to the State System for permanent registration or registration of CH objects under the Ministry of Culture and Information Policy (MCIP) of Ukraine. Border management includes support for the entire life cycle of the spatial characteristics of CH entity models – from random statement about the CH object to the transformation into an object of the registration system or even an object of the national register. It is shown that when defining boundaries, you need to be able to work with different spatial characterizations of the CH object. It is proved that this characterization can be started from available cartographic material, and not from the implementation of land management projects, as it is done in the case of spatial characterization of land parcels. The elements of the methodology are described, which allows to carry out the necessary spatial characterization of the CH objects in practice.

Adaptive control of variable-speed wind turbines for power capture optimisation

Rotor speed control of wind turbines is a key factor in achieving the maximum power of wind. It is known that a high-performance controller can significantly increase the amount of energy that can be captured from this source. The main problem regarding this issue is the lack of information about the correct dynamic model of the system. This uncertainty of the model is generally associated with unknown parameters (structured uncertainty) and/or external disturbances (unstructured uncertainty). Some adaptive and robust control approaches are developed in the literature in order to deal respectively with structured and unstructured uncertainties. In this paper, to compensate for both types of uncertainty, a robust controller, which includes an adaptive feedforward term, is proposed to track the optimal speed. In addition to considering the uncertainties, another advantage of the presented approach is that, using a smooth control effort, it provides global asymptotic tracking. A complete stability proof of the system is presented, and simulation results illustrate the effectiveness of the controller.

Reconstruction of the Dorsal Ligament of the Triangular Fibrocartilage Complex

The distal radio-ulnar ligaments (DRUL) are key components of the triangular fibrocartilage complex (TFCC). The dorsal DRUL tightens during pronation of the forearm and helps to stabilize this motion. 12 women and three men at our clinic have been treated for DRUJ instability secondary to dorsal DRUL rupture or attenuation. Their chief complaint was pain. The dorsal DRUL was reconstructed using a tendon graft, the ends of which were anchored in the bone of the radius and ulna. This technique has been shown to correct dynamic DRUJ instability in carefully selected patients, decreasing or eliminating pain and restoring normal function.