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Today, under the conditions of negative effects of the influence of natural and, especially, anthropogenic factors on the natural environment, automated systems for monitoring the state of the environment are spreading. The purpose of the work is to develop an analytical decision support system based on the results of forecasting indicators of surface water pollution of the city Lviv. To analyze and forecast the indicators of surface water pollution in Lviv, a trained neural network was created using the Python pr...

A problem of determining the effect of pressure maintenance system is considered. We want to estimate the influence of each of the water pumps to each of the extracting wells. We propose a stochastic model of the oil field?s liquid flow, which is based on the Kalman filter model. It is loosely based on the filtering theory, and is designed to simplify the computations. We also propose a method to estimate the parameters of the model, which is a variation of the EM-algorithm. It is proved that this procedure conver...

The objective of this work is to present the implementating of an employees? performances assessment process in the Heating-Ventilation-AirConditioning (HVAC) department of a ship design company, using the multi-criteria decision method. It is useful and important to optimize this process in the ship design companies because at present the way how to carry out the performance assessment can lead to a series of important errors such as: error of dispersion and of central tendency, error of "logical" evaluation, hal...

The onshore field X is located in the Getic Basin of Romania, 100 km far from Bucharest. This 15km by 2km field was discovered by exploration department in the 1951 year. Following drilling of down-dip appraisal wells from 1951-1952, this field was established as one of the largest oil field in the Getic Basin, with more than 250 wells drilled. Based on the oil production, an Integrated Reservoir Study have been developed in 2019, in order to find new development opportunities for remaining oil in place. The wells...

The waste management is a key factor for sustainable regional and local development. It affects directly to environment ? soil, water, air and etc., which are one of pillars of quality of life and living conditions. The article presents an approach for more easy understanding of the set of statistical data that monitored environment and in particular waste management. The waste management has been analyzed at national, regional and local levels. A share of treated municipal waste of total municipal waste generated...

The geological modeling is an actively developing area of petroleum geoscience. One of the limiting factors for geological modeling is the processing of input data, which is a routine process and can be automatized. The paper describes the screening for an effective approach and development of the workflow allowing automatical depth matching of well logs with the use of statistical methods of data analysis basing on the real set of wells. The purpose of this work is to study the machine learning algorithms applica...

The article presents the results of one of the stages of research, the purpose of which is to increase the speed of video data transmission from a source to a processing center. It is shown that one of the approaches to achieve the given goal is to reduce the amount of information for transmission through the partial transferring of frames of the video stream. This possibility is provided by the three-dimensional representation of blocks of frames in the form of a bit cube, which described in the article. The idea...

Climate change and assessment of potential impacts to reduce it is one of the most pressing and priority issues on the agenda of the international community. Developing environmental assessment of alternative energy sources based on life cycle assessment (LCA) is a way to assess climate risks, because it contains the potential of global warming, and therefore allows calculating the carbon footprint of any energy source. However, to properly assess the environmental impacts of alternative energy source it is also i...

An important prerequisite for geotechnical foundation analysis is to have a sufficient amount of quality data on soil parameters. In difficult geotechnical soil condition, e.q. thick deposits of soft fine-grained unconsolidated soils, particular importance should be given to the selection and performance of field and laboratory investigations. This paper shows an example of geophysical and geotechnical investigation works, which were performed in Croatia (the city of Opuzen) for the purpose of foundation design. T...

Natural dyes gained considerable attractiveness in textile manufacturing based on the negative impact of synthetic dyes on the environment and human health. The aim of the present study was to develop an efficient extractive technology of anthocyanins from Hibiscus sabdariffa, and to comparatively investigate the dyeing of cotton with the natural extract, in the presence and absence of (bio)mordants. The results of extraction processes using eco-friendly solvents and different solvent/solid ratio and extraction ti...

Last decades witnessed a significant increasing in energy consumption in data centers and server rooms. More powerful equipment and more complex IT services have been driving to more power demand. Since infrastructure and energy costs in data centers have become a central factor in IT management, a range of technologies has been developed to increase energy efficiency. New hardware and power management options support energy saving strategies. An appropriate procurement plan is essential for building an efficient ...

A survey carried out in October 2018 on Cricovului Sarat Valley, along a distance of about 5 km that crossed the Gornet-Cricov commune revealed few ecological aspects of this Subcarpathian area located in Prahova County, Romania. We inventoried the resources of vegetation and associated invertebrates, listing the most relevant taxons that populate the river banks. So far, representatives from 15 plant families (Adoxaceae, Amaranthaceae, Apiaceae, Asteraceae, Caryophyllaceae, Euphorbiaceae, Fabaceae, Plantaginaceae...

The fundamentals challenges of shock loading impact are known as complex nonlinear problems with variable contact conditions. Even the simplified solution of these problems often bring in essential mathematical complexity related with: shock or elastic waves parameters, distribution of contact stresses, elasto-plastic deformation of the bodies in collision, balance and dissipation of energy, and others. Therefore, and in practice we often use simplified analytical approaches to resolve engineering challenges even ...

In construction field, concealed works are found in structural and nonstructural elements or may be component parts of them. These types of works have an importance role regarding the quality of the final construction, mainly due to their particularity with respect to difficult and complex methods of inspection, monitoring or intervention. There is a wide and complex range of concealed works in constructions, both in infrastructure and structure, as well as in architecture and resistance. All concealed works are c...

The paper outlines time series analysis of tide gauge data to solve for short and long term sea level variations at the Varna tide gauge station. The data covered the period 1928 ? 2018. The measurements have started at 1928 using mechanical floating tide gauge type A. Ott-Kempten. In 2013 a radar tide gauge type Vega Plus with web interface was installed. Linear regression model was applied analyzing monthly registration for computing mean sea level, trend, annual, semiannual and decadal variations. Analysis of t...

At the present state, the LIDAR systems have different configurations and geometries, according to their applications. The multi-wavelength Raman and depolarization LIDAR systems used in the European Aerosol Research Lidar Network ? EARLINET are suitable to provide an extended set of optical parameters for aerosol characterization which can be used in climatology studies, models and different events like Saharan dust outbreaks, transport of smoke plumes or volcanic ash. The aerosol in the atmosphere is present mos...

This paper reflects an analysis of agriculturally lands within the city of Nizhnevartovsk located in the flood zone, based on geographic information mapping.

The long field development period requires integrated approaches both to updating of geological information and implementation of production enhancement operations. The analysis of available literature about reservoirs with similar conditions in Russia and abroad made it possible to identify a pool of technologies related to improved oil production. An approach to comparative analysis of the effectiveness of applied technologies was offered. In the course of the look-back analysis of production enhancement operati...

The paper suggests the use of diagnostic features in the form of decomposition coefficients of biosignals statistical estimates in the normal range and in different types of pathologies obtained on the basis of a mathematical model in the form of a cyclic random process. As a criterion for choosing the necessary spectral coefficients of the biosignal decompositions in the Fourier basis set, was chosen the energy criterion. As diagnostic features, was used a such spectral coefficients that according to the Bessel i...

One of the largest fires in the Croatian history, so called ?mother of all fires?, broke out on Monday, 17. July 2017 in the area between Split and Omis (Croatia). The fighting with the firestorm lasted until 18. July when the situation was put under control, and on 19. July, the recovery of the affected area started. The classification showed that the burned area was 40670 square kilometers large. Vegetation indices obtained from aerial or remote sensing imagery are very simple and effective methods for quantitat...

In order to produce crude oil three recovery techniques are used: primary, second and tertiary also known as Enhanced Oil Recovery (EOR). Oil production in the Carpatian region is difficult due to the long-term production and significant depletion of reservoir energy. One of the methods that are considered to increase oil recovery factor is CO2-EOR. This method is based on carbon dioxide injection into oil reservoir in order to maintain reservoir pressure and modify physicochemical oil properties. Combination of t...

The aim of paper is the evaluation and analysis of the change of rainwater runoff for the proposed extension of the building and the assessment of the impact of the extension of the building on the drainage of flood waters. The annex is situated on the northwest side of the SO1 building and on the northeast side of the SO2 building. The extension extends the existing surface and connects the two existing objects to a single entity. The proposed extension is located in the Q20 floodplain area of the Lobezsky stream...

The decrease in fuel consumption for energy production occurs mainly due to the expense of domestic hard coal. This phenomenon is beneficial due to ecological reasons as well as due to short-term economic effects. Pollution of the natural environment in Poland by industrial plants has decreased, while sulfur dioxide emission has decreased. The greatest progress was achieved in reducing dust emissions by installing electrostatic precipitators with efficiency over 95%. The least progress has been made in reducing ca...

This article justifies the importance of using geo-information technologies for the analysis of the core-periphery dependencies at the regional level. A conceptual analysis of scientific studies on the centre-peripheral structures of regional economies is carried out. It is shown that under the influence of the factors of globalisation, Russian regions are becoming economically fragmented, are demonstrating a deepening of peripherality. At the same time, the preparation of proposals for regional social and economi...

The article provides a comparative analysis of routing protocols in the context of use in wireless sensor networks with a MANET structure using for communication interaction of distributed facilities and engineering systems of buildings (such as automated dispatch control systems of distributed energy consumption objects, heating systems, cooling systems, building sensors and energy resources meters, etc.). As the most promising for further development, the protocols AODV, DSR, DSDV, OLSR with a description of the...

Monitoring of heavy metals contents (Ni, Cr) in soils and regular upgrading of information enable to monitor development and changes in soil properties of present state, as well as trends in soil contamination. Data about situation of soil hygiene are necessary for evaluation of entering abilities of mentioned contaminants into food chain. In our work the present state of amounts of two risky elements in soil (in depth of 0-0.3m), as well as spatial identification with evaluation of information for spheres of envi...

Generally, in Romania, the management of landfills is a major concern with regard to existing circumstances. Although the percentage of recycled waste is increasing, there are still many previously built landfills that are currently in the post-management phase. The negative impact of landfills is represented by leachate built-ups, that contains heavy metals and can pollute soil, groundwater and surface waters and endanger population?s health. European waste legislation requires closure of non-compliant landfills ...

The article presents the analysis of the environmental benefits from the optimization of urban traffic flow or from the measures to alleviate slow traffic flow (congestions). The environmental benefits are evaluated by assessing the decrease in the external costs due to the reduced emissions of such pollutants as carbon dioxide, methane, carbon monoxide and nitrogen oxides. The emissions of pollutants are estimated according to the calculations of fuel consumption. To asses the potential environmental benefits, th...

The article describes the results of implementation tracer studies at one of the complex fractured-cavernous carbonate reservoir in the Republic of Tatarstan. Water injection in one well leaded to the water cut rise in one producer well then neighbor wells are insignificantly reacting on the pressure maintenance. On one hand low efficiency of water flooding in carbonates can be caused by hydrophobic properties of minerals like calcite and by heterogeneity of the void space including presence of fractures and caver...

Based on the engineering and geological conditions of the Zhongjie Station of Shenyang Metro Line one, the MIDAS finite element software was used to simulate the four different construction sequences of the tunnel excavation in the PBA construction method, and the same surface loads and fixed Under the condition of constraint and soil parameters, the simulation study shows the changes of arch settlement and surface settlement during the excavation of the tunnel, and the recommended scheme for the excavation sequen...

Ability of farms to undertake investments greatly depends on the production potential, production scale and thus on an economic force which may be described as an ability to develop and grow. This force, called economic effectiveness, is measured with the level of income that should cover not only the costs of use of own production factors i.e. land, capital, and work, but also enable investing in new assets of a farm. Since, if it does not obtain such incomes, then it ceases investment purchases and after some ti...

The aim of an article is to analyze the current state of building security awareness and preparing people up to 15 years of age in the area of extraordinary crisis situations focusing on fire protection. In the framework of the analysis of the current situation using the study of legislation, questionnaire survey and controlled interviews, deficiencies in the given area were identified and solutions were proposed. The target group of the interview was the members of the voluntary fire protection of the Slovak Repu...

Among the methods used in the management of municipal waste, one can distinguish, their combustion in installations for the thermal treatment of municipal waste (ITPOK). The advantage of this method implemented in modern installations is the reduction of the mass and volume of waste with simultaneous very efficient cogeneration of heat and electricity, while minimizing emissions. One of the possibilities of including ITPOK in the implementation of the Circular Economy idea regarding raw material recovery is the us...

Highway section taken in the analysis, with a length of 19.47 km and between km 27 + 620 m ? 47 + 090 m, contains structures, earthworks, hydrological works for improvement of river beds, water collection and drainage, etc. Due to the location conditions of this section (geography, terrain morphology, hydrology and hydrogeology of the area, climate, urban settlements) permanent research on the structure of resistance (foundation, embankments and debris) are required (see [3], [4]). The work, based on several labor...

Submerged piles are often used as anchoring system in foundation of structures. They help to transfer the ground pressure acting on sheeting to the subsoil. They are mostly used in anchoring of the sheet piles, pile and underground walls into the surrounding soil massif. Other options of use are support walls and bank walls, under-washing protective walls, bank fortifications, swelling-up equipment in ship berths, etc. Anchoring system consists of drawing rod, fixed with its one ending to sheeting and with the oth...

This paper analyses the structure made from fair faced concrete compared to a conventional concrete sandwich structure with a surface finish in terms of bound CO2 emissions. This article also takes into account the length of service life of the individual constructions. For each of these structures, an analysis for high-performance concrete (HPC) and conventional iron-reinforced concrete (sometime called normal strength concrete NSC) is provided. Due to the current tendency of construction from colored fair-face c...

The article presents the results of the analysis of the dependence of the effectiveness of requests submitted to scientific competitions from the criteria for their evaluation. Statistics of requests submitted to external competitions from ITMO University was obtained from the implemented automated system for requests recording. This system performs the functions of formation of the register of requests of the organization, and also allows to check the requests for their compliance with the requirements of the sel...

The earthquakes are very complex physical phenomena characterized by violent or chaotic movements of the Earth's crust. Seismic engineering is one of the most important parts of building dynamics. From this perspective, the present work has as its first objective the analysis of the behavior of a structure in seismic action. The most important aspects of the seismic movement that define the purpose of this analysis are the effects on constructions, i.e. the stresses and deformations developed in the structural ele...

Traffic calming measures are implemented increasingly frequently to improve safety of traffic in urban areas. Speed is one of the parameters having a bearing on the safety of traffic and, as such, it is important to assess the effect of the design measures on the operating speeds of vehicles. This paper investigates the efficiency of traffic safety measures implemented in city centre areas. The research site was a street where alterations of vehicular and pedestrian traffic management and parking arrangements had ...

The paper presents an analysis methodology, based on artificial neural networks, for the influences of environment characteristics on generated wind power in Republic of Moldavia. The necessity to reduce the pollution, on one hand and the increasing energy consumption on other hand, leads to an extensive use of so called "renewable energy sources" between these the most targeted being wave and wind energy. For the countries without exits to seas or oceans - like Republic of Moldova is - the wind energy remain the ...

The article deals with the analysis of the filling quantity of the available soil water storage (in depth of 0 ? 30 cm) on the protected soil resources only in arable land of the Zitava river catchment (Slovakia). The filling quantity of available soil water storage is expressed by the ratio between the currently available soil water storage and the potentially available soil water storage. The filling quantity of available soil water storage in protected soil resources in the territory was analysed in two years, ...

The floods are common phenomena in the Danube Delta that covers major land areas. The Danube by its nature brings every year from upstream to downstream significant quantities of water. Furthermore, at different times of the year the river can cause significant floods on the urban and rural settlements along its course and can act as a huge pressure on the dams belonging to the Danube Delta agricultural enclosures. The pressure is generally given by the flash floods which is a phenomenon of rapid increase and decr...

The floods are extreme hydro_meteorological phenomena and are more and more common along the rivers. The climate change in the recent years has negatively influenced the way in which the classical weather phenomena have become a danger to communities, infrastructure and environment. The target area of this study is the northern part of the Danube Delta, where three localities prone to flood risk are analyzed - Figure 1. The high water levels on the Danube at certain times of the year may pose a great danger to the...

Managed by the Conservation of Forests of Oum El Bouaghi, the forest of Sidi R?Ghies which is primarily for forestry covers an area of 3106 hectares. This area consists of several species. The current ecological status of the forest is poorly understood. The precise knowledge of existing forest resources and their evolution has become indispensable. The objective of our study is to collect data on the current environmental status of the site and timber resources in order to establish a reference state (zero state)...

Currently, there are a number of works focusing on the study of the geodynamic situation near the large reservoirs. These studies cover many areas of research from geodynamic models of the Earth's crust and geodynamic activity of water reservoirs (e.g. lakes) to dynamics of the Earth's rotation and oil deposits. This paper presents a new method of analyzing the geodynamic situation near the large reservoirs. As an example, the geophysical conditions near Kuybyshev are determined using the method and data on latitu...

Since 1990, there have been changes regarding land use and land cover in Romania, due to the new socio-economic conditions. The main objective of this study was to evaluate the landscape fragmentation in the Romanian Subcarpathian area, during the post-communism period, determined by anthropic activities in the context of new adopted regulations on agricultural land resources. We made a comparative study between Prahova Subcarpathians and Buzau Subcarpathians, characterized by similar geomorphological patterns but...

Sub-unit of the Moldo-Transylvanian Carpathians, the Ciucului Mountains are individualized in the central-southern part of them as a well-established mountain unit, limited to the west by the Ciucului Depression, with a total area of about 93720 hectares. As a whole, Ciucului Mountains, with its altitudes exceeding 1500 m, is wrapped in the form of a large isosceles triangle, based on the West, the Ciucului Depression, and a north-south ridge orientation as in general with the major structures of Carpathian Flis. ...

The aim of the paper is to analyze the impact of natural disasters on the economic activity of companies by a modified DuPont model. The proposed modified DuPont model includes ratios for economic efficiency, profitability and financial autonomy. Usually the DuPont analysis model is used to evaluate the component parts of a company's return on equity (ROE). This allows an investor to determine what financial activities are contributing most to the changes in ROE. DuPont analysis divides ROE into its constituent co...

Despite the increase of awareness and government involvement, the potential of many European countries to develop bioeconomy is still at a low level. The concept of bioeconomy is rather abstract and largely untapped. Many factors, including insufficient involvement of stakeholders in developing bio-economics strategies, which probably stem from the lack of theoretical and practical knowledge that governs this concept, technological transfer and proper exploitation of current scientific research tools, contribute t...

The further development and existence of civilisation is significantly dependent on ecological awareness and the related actions undertaken by individual countries. The rapid and unprecedented economic growth of the 19th and 20th centuries has resulted in a significant imbalance of the natural environment. One of the more important consequences of this growth is the emission of large amounts of greenhouse gases and other pollutants. This leads to soil, water, and air contamination, thereby negatively affecting the...