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The underground mining of a deposit leads inevitably to the deformation of the surface as well as to the destruction of the buildings located in the area of influence of the extraction. Therefore, the rocks surrounding the excavation, created by the extraction process, go from the initial equilibrium state of tensions (triaxial) to a biaxial or even uniaxial stress state. This secondary state of tension leads to the occurrence of rock breaking phenomena in the areas where their resistance are exceeded, respectivel...

In 2017 for the first time in Kazakhstan we gave several lessons at the Abai Kazakh National Pedagogical University (KazNPU) in Almaty, through the instrumentality of the ?flipped classroom? method within the frame of the following disciplines: ?The theory of evolution? for undergraduate students and ?A modern human physiology? for graduate students. In accordance with the requirements of employed method, teaching and learning process was built in such a manner. Teachers provided to the students educational materi...

The aim of this study is to validate the possibility of using the 100 Megapixels Hasselblad Hd-6 middle format camera and Agisoft PhotoScan in the Cultural Heritage documentation. The subject of this investigations is the fresco decoration in one of the rooms in the Bieli?ski Palace in Otwock Wielki, near Warsaw (Poland). The frescos cover the walls of a room of 11,5 ? 5,5 m in one of the wings of the palace. The results of the data analysis convincingly show that a higher resolution can be obtained using a Hassel...

Accessibility to urban facilities and public services is nowadays one of the key factors that impacts the quality of urban live. That being said, accessibility is a complex concept, which although in common use, has a range of meanings, and measuring it raises numerous methodological problems. For instance, accessibility is closely related to the concept of distance, but as a society evolves, other factors such as travel time, economic cost, different transport options, interest or attraction of the destination co...

In this paper, a computational method to predict the corrosion resistance of some ironbased powder metallurgy (P/M) materials is proposed. The samples prepared from atomized iron powder and pre-alloyed iron base powders powders were the materials analyzed in this paper. The compacted samples were obtained by powder metallurgy process, respectively pressing and sintering of the mixed powders. The samples were compacted at a pressures of 400 and 600 MPa. The sintering temperature was approximately 1.150 В°C. The inf...

The proposed paper presents the situation of the Aranca hydroameliorative arrangement located in the western part of Romania. The Aranca hydroameliorative arrangement was realized in 1965 and the completion of the land improvement works in this arrangement were realized between the years 1974-1977. Since the execution, a series of rehabilitation works have been carried out due to changes in agricultural practices in the area affected by climate change. This research assesses the state of the art as well as its fun...

The proposed paper presents the situation of the Teba-Timisat hydroameliorative arrangement located in the western part of Romania. Teba-Timisat hydroameliorative arrangement was realized in 1962 and the completion of the land improvement works in this arrangement was executed between 1985 and 1987. Since the execution, a series of rehabilitation works have been carried out, due to changes in agricultural practices in the area affected by climate change. This research assesses the state of the art as well as its f...

The main idea of this paper is to develop a multi-agent system, integrating advanced control algorithms and acting scenarios, for optimizing energy management in an intelligent microgrid. In order to achieve this objective, it is proposed a flexible intelligent tool based on multi-agents, able to give alternatives for action to prosumers, through a specialized interface. In this respect, firstly are presented aspects related to the multi- agents (MAS) integration in smart grids? control. In the second part the wor...

One tenth of the European population lives in distressed areas where physical and economic plight is aggravated by social problems. In urban renewal, two emerging problems require attention: a) the inclusion of the local communities in making choices for land administration; b) the complex nature of the interventions due to the multiplicity, diversity and conflict of the elements involved. With the aim of providing an evaluation procedure able to aid public choice, to involve the community and to reach a shared ch...

Buldan region is almost 45 km from Denizli (Western Turkey) province. Terrestrial sedimentary units are deposited throughout the Denizli Basin in age from the Early Miocene to Present. The coals are located in Middle Miocene K?z?lburun Formation consisting of conglomerate, sandstone and mudstone lithologies. Coal samples were studied using standard total organic carbon (TOC) and kerogen pyrolysis analysis of the whole rock samples and organic petrographic methods. Average TOC content, S1 and S2 values of investiga...

The article presents the importance of abandoned quarries for the mosaic landscape structure. Five objects {and} their surroundings in a 100-m zone located in the Polish Western Carpathians were analysed in terms of plant communities, flora, physical and chemical parameters of soils, and diversity of relief. The objects, which were originally used for excavation of marls, were characterised by the largest differences in soil parameters between the quarry and the surroundings. Xerothermic vegetation was noted to ha...

Energy efficiency is a key factor of today?s engineering practice. Water and wastewater systems (made up of supply and disposal networks, treatment plants etc.) often contain under pressure sections. Their energy efficiency strongly depends on the accuracy of the head loss evaluation including local head loss. In these systems a great amount of local head loss is given by different valves. Gate valves and check valves are being widely used in water and wastewater systems, therefore this article focuses especially ...

In the article regulation concept in the field of environmental protection existing in the Russia was considered. Practical implementation of environmental regulation of air, based on the application of maximum permissible concentrations of air pollutants for green spaces, was discussed. A comparative analysis of existing air quality indicators in Russia and in a number of foreign countries was made. The results of calculations of integral indicators of atmospheric air pollution in two large cities of the Russian ...

Climate changes and human activities on Earth's surface effect on natural Earth's resources as well as on inland waters. Any changes in the Earth's atmosphere, such as changes in temperature, humidity, precipitations and their intensity affect the inland waters area and level. In order to carry out the monitoring of the areas under the inland waters economically, the satellite imageries collected by remote sensing sensors are used. Satellite imagery used for this research were cloud-free Landsat-8 imagery at study...

Global Navigation Satellite Systems became more and more popular. They are used in a lot of aspects of modern life. Users need to get better accuracy linked with small, easy to use receivers. The aim of this study was to analyse the accuracy of the NovAtel FlexPak6 receiver using Spirent 6300M simulator. NovAtel FlexPak6 is a brand new receiver fully integrated both with GLONASS and GPS systems. It allows to get better precision and accuracy of the determined position than with using only one of these systems. The...

Spatial databases collect information about geographic objects that represent real world phenomena. Stored and shared data sets are not homogeneous, because they are obtained on the basis of diversified source materials. Distributed sources of spatial data are characterized by a different organization in terms of completeness, consistency and accuracy. In Poland, the topographic objects database (BDOT10k) is one of the basic databases covering the entire country. The positional accuracy is a basic element of the s...

Crystal dextrose is produced from solutions by enzymatic hydrolysis of starch. The process of crystallization of dextrose is the most complicated and responsible. The nucleation stage is particularly difficult. The common theory of crystallization connects the rate of nucleus formation with the surface tension of the solution. The purpose of the research is to activate the crystallization process by using surface-active substances (surfactants). Aliphatic alcohols: butanol, propanol, isobutanol, isopropanol were u...

Crystal dextrose is produced from solutions by enzymatic hydrolysis of starch. The process of crystallization of dextrose is the most complicated and responsible. The nucleation stage is particularly difficult. The common theory of crystallization connects the rate of nucleus formation with the surface tension of the solution. The purpose of the research is to activate the crystallization process by using surface-active substances (surfactants). Aliphatic alcohols: butanol, propanol, isobutanol, isopropanol were u...

Petri nets is the well-known mathematical tool for the modeling and verification of parallel systems of all kind. Multiprocess Petri multinets with time stamps (MPTSM) are the newly introduced class of low-level Petri nets, whose definition and the properties are the main topic of this article; they generalize the properties of P/T Petri multiprocess multinets in the area of design, modeling and verification of generally parallel programming systems with the discrete time. The MPTSM with the support of the ASYNC-C...

In research are used objective and subjective sound features on the development of noise annoyance assessment model in urbanized environment. They represent a quantitative and qualitative evaluation of the acoustic signal. The relation of objective features in subjective features is the direction of research on the development of noise annoyance evaluation model developed for several years. The carrier of information about the characteristics of sound in the environment is an acoustic signal coming from noise sour...

Process and plant design need to be continuously improved, the use of new safety concepts to a full extent being one of the key parameters leading to their sustainable improvement. Accidents occurred over time in industrial facilities where explosive gas or vapor atmospheres may be present have put the explosion risks high on the agenda of regulators, operators, accident investigators or researchers in the field. Accidental flammable gas leaks in mixture with air may generate explosive atmospheres which once ignit...

Aerospace engineering is the engineering field concerned with aircraft and spacecraft development and operating. Thus it correspondingly has two major and actually overlapping sectors, as aeronautical and astronautic engineering. Aeronautical engineering was the original term for the field, but as flight technology advanced to include craft operating in outer space as well, this means the field of astronautics, the broader term of aerospace engineering has come since a while into common use. Aerospace engineering,...

The paper presents the results of the experiences organized on the tailings dump resulting from the surface mining of lignite in Rovinari, Gorj county, for testing the effects of a fertilizer assortment, such as: liquid fertilizers based on humates extracted from lignite, complex mineral fertilizer (N105 P105 K105 and N150 P150 K150), farmyard manure (20, 40 and 60 t/ha) and compost (20, 40 and 60 t/ha), as well as mixtures of the two types of organic fertilizers with mineral fertilizer. Sunflowers have been used ...

In the article the main results of study in the field of weather and climate risks evalua-tion for the territory of the Belgorod oblast are summarized. The directions of these risks management at the regional level are determined. Against the backdrop of global climate change, the volatility of agricultural and meteor-ological conditions not only continues but also worsens. The observed increase in the frequency of occurrence of hazardous agro-meteorological phenomena in the region is determined by climatic change...

As a basic component of the environment, the air, vitally contributes to life maintenance and society development, through its physical and chemical properties. Thus, studying air quality, as the main factor for the living world?s progress, becomes a topical issue. Therefore, this paper proposes a detailed analysis of Botosani Town air quality. The analysis was obtained following a statistical processing of open-source data, for the year 2017, provided by the County Environmental Protection Agency and the National...

The current legislative standards require as much as possible energy efficient construction. Airtightness is a key component of energy-efficient buildings. Airtightness is characterized by air leakage through the building envelopes. Untightness leads to uncontrolled air exchange and increased heat loss. Using the exploratory analysis of variables is analyzed the state of the airtightness of energy-efficient buildings in the United Kingdoms in recent years. The source of data sample set on the airtightness of UK en...

Carbonate rocks, bearifng the majority of world?s hydrocarbon reserves often exhibit variable lithology. In carbonates, different proportions of calcite and dolomite, accompanied by other minerals can be expected. Dolomitization of carbonate rocks usually leads to porosity enhancement, since dolomite crystals occupy smaller volume in comparison to calcite. This paper considers the integration of Alizarine Red S staining method and image analysis in order to qualitatively state the content of both calcite and dolom...

In all industrial branches, the last period is under the sign of economic progress, but with the lowest energy consumption and the lowest possible release of pollutants. Technologically, therefore, the removal of polluting technologies and the introduction of new "environmentally friendly" technologies are being sought. Thus, the new industrial trend is to reduce the use of molded or forged semi finished products and the introduction of cold rolled semi finished products or other processes. This transformation can...

Climate change will lead to an intensification of the hydrological cycle and can have a major impact on regional water resources. A change in water volume and distribution will affect both groundwater and surface water reserves usable in industry, domestic activities, irrigation, navigation, aquatic ecosystems, hydropower and some recreational activities. Changes in the total amount of rainfall, in their frequency and intensity, directly affect the size and times of floods and droughts. The impacts of climate chan...

Last year (2017) was one of the three hottest years on record, with many high-impact events including catastrophic hurricanes and floods, debilitating heat waves and drought. Long-term indicators of climate change continue unabated and arctic sea ice coverage remained below average. Of the hottest years on record, 15 out of 17 have come since 2000. By contrast, more than a century has gone by since the planet had a record cold year (1911). At European level, based on the three different observational records of gl...

The purpose of hydraulic fracturing is to stimulate the well so as to significantly improve its performance. To achieve this, a fracture is created, which is then propped open with a propping agent. The success of this process depends largely on the fracture conductivity, which is the product of the fracture width and the apparent permeability of the proppant within the fracture. After hydraulic fracturing, well productivity is definitely affected by the interaction between the proppants and the fracture surface. ...

This article presents an approach for managing and comparing data, concerning some main food products in Bulgaria. The source for the search of these product categories (bakery products, milk and milk products, fish and fish products and etc.) is the created relational database. The extracted data for the selected category have been grouped, compared and processed. The obtained results enable the user to present relevant conclusions for the examined time interval. This approach is applied to the data on bread and ...

In this research we investigate the significance of the CGAL library which is a source of algorithms related to computational geometry. We briefly describe the exact computation paradigm that provides obtaining reliable geometrical results. We present the advantages of using the CGAL library in terms of investigating certain parameters of geological planar structures. We show that several parameters that can be computed and attributed to considered planes and subsequent use of further statistical methods becomes p...

Dust and heavy metals pollution is the first-priority problem of Almaty city. The city is located at the foot of the Tien Shan Mountains in the Southeast of the Republic of Kazakhstan and has the following geographical coordinates: 77 E (east longitude) and 430 N (north latitude). As long as existing pollution monitoring system in Almaty city is represented just by chemical and analytical data acquisition, it is claimed to be inefficient. The purpose of this reseach is to employ the best mathematical toolkits in p...

The advancement of tracking technologies such as RFID (Radio Frequency Identification) in recent years supported the study area of shopping behavior of consumers in retailing setting has globally regained increased interest. However, only few studies have attempted to analyze consumer shopping behavior using the RFID data. The purpose of this paper is to propose the framework based on behavioral and environmental variables, which can be tested using the RFID data obtained from the recent experiment in one of the s...

This paper describes the design of a new product, conceived by the authors, part of a research contract and of a technological transfer, from university to the industrial market. It is a low voltage class C surge-arrester, based only on metal-oxide varistors, designed for low voltage residential equipment. Located in the indoor interior connection boxes, it could protect the whole installation against any type of occurring overvoltage (pulsed or long time one). The results of the applicative research were transfer...

The paper is focused to characterize a limited assortment in the context of a set of drought sensitivity indices, grouping these indices according to the conditions they reflect (stress and / or normal) and the correlations between them. In our research, we aimed also comparing different sensitivity indicators proposed in order to identify the most appropriate index to characterize the behavior of varieties that we have studied in field experiments. The 13 varieties have been tested for 14 years between 2002 and 2...

Hydraulic structure Palcmansk? Ma?a is located in the eastern part of Slovakia, on the Hnilec River. Its main function is to produce electricity and flood control. It is in operation more than 60 years. The reservoir was created by damming up the river valley by concrete gravity dam. The bedrock of the dam is formed by phyllite rocks. The results of the water pressure tests confirmed the need to build a grout curtain in its subsoil. The safety of these structures is significantly determined by the uplift developme...

The paper deals with the problem of evaluating the characteristics of information systems at the design stage. In the design of ERP-systems the most interest characteristic is not the average time, but the probability of timely delivery of different type messsages (for example, command, service, multimedia, files, etc.) from the sender to the recipient. In addition, the possibility of using the priority information management built on the basis of service disciplines of general form with mixed priorities must be c...

Nowadays the concepts of environmental ethics and environmental responsibility are mentioned more and more frequently in relation to the performance of companies. These notions can relate either to a person or to a company. Being environmentally responsible entails fulfilling one?s duty to protect the environment. Companies whose activities do harm to the environment should carry out this duty. The aim of this research is to teach students specialising in oil and gas engineering how to assess a company?s corporate...

The current state of the mining industry is characterized by a tendency to rapid deepening of mining, which leads to an increase in the mineral excavation self-cost and negatively affects the safety of production. The effectiveness of an underground geotechnology largely depends on the correct choice of methods and schemes for ore and rock transportation, which is becoming increasingly important, with deepening mining. Currently, the most common transports in underground mining are rail and road vehicles; mine hau...

In the recent years, the climate changes have determined the increase of the frequency of flood, and concurrently, negative effects of these weather phenomena were amplified by other factors (the deforestation, needs of the hydro technical works, etc.). Atmospheric precipitation contributes to formation of superficial runoff, or accumulates in the snow in the winter, sometimes participating during melting to form the maximum runoff. The consequences of this rainfall can be serious in terms of erosion and soil wash...

The development of advanced indoor navigation systems for UAVs has encouraged an extensive interest because of its huge potential in military and civil applications. Global Positioning System allows working in an opened space; however, Indoor Positioning Systems are necessary to work more productively in covered places. The aim of this study was to analyse the state of the art of Indoor Positioning Algorithms. This study contains a description of the most popular Indoor Positioning Algorithms. Different technologi...

The study was performed at the former Jezi?rko sulphur mine (216.5 ha of afforested area after borehole exploitation). The area was characterized by the terrain structure and vegetation cover resulting from the reclamation process. The applied direction of reclamation for this area was forestry. The study investigated the possibility of applying the latest, freely available Sentinel-2 satellite images for the automation of land use and land cover (LULC) mapping, mainly in terms of monitoring the forest succession ...

One of the major environmental problems that is currently being raised is the olfactory discomfort. At present, the odor parameter is not regulated in national legislation, rather than in the Odor Immission Directive - OID- edition of 21 September 2004. The lack of a legal framework in terms of odor immissions constitutes an impediment for health of affected population and might have repercussions also on the economic development of the areas. Odors are one of the most emerging issues related to odor immissions fr...

The article deals with determination of shear strength properties of improved coarse - grained soils using a large-dimensional direct shear test apparatus. A road embankment in front of a new bridge over the Danube River in the Komarno city will be made of the gravel improved by the cement. Aim of the analysis is determination of the shear strength properties of this improved material for optimal and reliable design of the road embankment. The shear strength of gravel was determined in the SHEARMATIC 27-WF2304 she...

A complex geological structure with the superimposed effects of over 200 years of coal mining activities is characteristic of the Upper Silesian Coal Basin, Poland. Intensive exploitation leads to deformations of the rock mass and ground surface as well. The deformation process developing in the rock mass causes an increase in strains that may result in rockbursts. In this paper the data obtained by the PSInSAR technique covering the northeastern part of the Upper Silesian Coal Basin were used. The aim of this pap...

Avalanches are undesirable phenomena, represented by the sliding or floating on the slopes of mountains snow masses. The snow masses sometimes train in motion stones, rocks, and shrubs. The avalanches are dangerous because they do human victims. In Romanian mountains, avalanche victims are mostly tourists, skiers or climbers. Avalanches can also cause disasters, covering roads and blocking access to some localities, and last but not least, human victims. They are also the most unexpected and most spectacular aspec...

Climate change is one of the greatest threats to the environment, the social and economic framework. In this paper we analyzed the phenomenon of climate change in the Danube Delta, Romania. In the first part of the study, we analyzed the causes and effects of climate change in this area and finally proposed some solutions to limit the effects of this phenomenon. As a research methodology we used the quantitative and qualitative analysis of the statistical data included in the Romanian Statistical Yearbooks and the...

Underground hard coal exploitation is accompanied by a series of natural hazards. Their number and intensity increase along with the growing depth of exploitation. Amongst the most dangerous hazards in the mining industry, one can distinguish the following: methane hazards, seismic hazards (including the rock-burst hazard) and coal dust explosion hazards. They are a common issue in Polish coal mines, thereby making it necessary for coal mines to identify the level of these hazards. It can also be assumed that ther...