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The work describes a method for restoring three-dimensional models of rigid objects from one satellite image, based on the usage of convolutional neural network models. General requirements for reference and test satellite images are: seasonal shooting (lack of snow cover); images? geo-linking to railway infrastructure objects and to the general coordinate projection; presence of image metadata on survey and lighting conditions (geo-reference data and time of survey, photography and position of the Sun); visibilit...

This paper aims to explore the degree of intensification and extensification of agricultural practices followed by farms of different economic sizes and the type of farming in Latvia. While intensification is considered as an effective way of achieving agricultural independence at supra-national and national levels, more voices are raised against an increasing demand for energy and unsustainable agricultural activities causing irreparable damage to natural habitats and reducing biological diversity. Although farmi...

Disasters bring about sudden changes to life, the environment and nature; fundamentally altering landscapes and thus also influencing the history, culture, traditions and environmental perspectives of the regions in which they occur. This study aimed to investigate the ways in which a landscape is treated and changed in the process of recovery from a large scale earthquake and to examine the introduction of green infrastructure during this recovery process. To achieve this, we set two specific research objectives....

The universities in Bulgaria operate in a very dynamic environment. The Ministry of Education and Science (MES) changes annually the requirements that their systems must meet. Changes can be small and affect only parts of the information systems in use or impose fundamental changes. To cope with this challenge, each university has a choice - either to move to a high level of digitalization or to maintain a minimum digitization of processes, so that no correction is needed in them, thus increasing the hours of work...

A directional coupler is a passive device designed to divide the power between its outputs in a given ratio. The value of this ratio depends on the resistances of the segments with which the device is assembled. It is important to understand how the miniaturization efficiency of a 3 dB directional coupler varies at different operating frequencies. Modeling and calculation of the characteristics of the devices was carried out in a specialized program Cadence AWR. The first step in the work was the design of taps ac...

Most methods of mining waste water treatment require significant costs for the construction and operation of tailings. Their area is calculated from the sedimentation time of impurities and suspended particles. The paper shows that an effective way of mining waste water treatment is flocculation of impurities and suspended particles and the subsequent flotation of the resulting flocs. Based on the results obtained, the Mining Institute KSC RAS has developed a technology for mining waste water treatment, including ...

The universities in Bulgaria operate in a very dynamic environment. The Ministry of Education and Science (MES) changes annually the requirements that their systems must meet. Changes can be small and affect only parts of the information systems in use or impose fundamental changes. To cope with this challenge, each university has a choice - either to move to a high level of digitalization or to maintain a minimum digitization of processes, so that no correction is needed in them, thus increasing the hours of work...

The increase in the price for non-renewable energy resources has led to the finding of cheap alternative fuel solutions that can meet the growing demand for energy. The objective for the researchers is to use renewable energy as an alternative energy source to produce green energy. Over time, researchers have developed several types of shapes for the wind turbine: small, which have a generation capacity of 50-60 KW of power; On average, they have a capacity between 50-1500 KW and large, capable with a capacity of ...

?Ensure sustainable consumption and production patterns? is one of 17 goals of The 2030 Agenda for Sustainable Development, adopted by all United Nations Member States in 2015. The target is by 2030, substantially reduce waste generation through prevention, reduction, recycling and reuse and the key indicator is the Recycling rate measured by tons of material recycled. The aim of the research was studying of the regional aspect of municipal waste management disparities in Bulgaria. The progress for achievement of ...

The environmental problems of developing solid mineral deposits are largely associated with the need to store waste from mineral mining and processing. Such wastes occupy tens of thousands of hectares and are a source of pollution of atmospheric air, soil, surface and groundwater as a result of wind and water erosion. Large areas of stored waste determine the reasonability of using remote observation methods for assessing their conditions in order to make informed decisions aimed at improving the ecological state ...