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Millennials or generation Y is the largest and most diverse generation to ever attend university. They have high expectations towards teachers, the study environment and also to course mates when compared with previous generations of learners. Millennials rely on recommendations from peers and friends more than from experts, which refers to the importance they assign to their lives. In the present paper, the authors discuss the role of the social environment in the study process that millennial learners present. T...

The purpose of this paper is to present an analysis for Romania?s energetic strategy designed for 2016-2030 according to the EU direction. Energetic security for a country is the most important after the IT sector, and also the knowledge to administrate key energetic resources. Import/ export of energetic resources is the question of how Romania will decide to develop or not its natural resources. The methodology will be a SWOT analysis, a personal point of view about the strategy. The environmental impact also is...

The main purpose of this study is to highlight the actual state of energy production and consumption in Romania and to emphasize where there is potential for either reducing the greenhouse gas emissions by using more efficient heating and cooling systems for buildings or reducing the greenhouse gas emissions by using less fossil fuels and more renewable energy sources that can be tapped in Romania. In Romania despite a good thermal insulation degree for newly constructed buildings in the past 5-10 years there is s...

In Romania, most of the construction and demolition wastes are stored together with other categories of waste or industrial by-products. Landfilling takes large areas of valuable land, but also causes air, water, and soil pollution, increasing the importance of any valorization or recycling technology for these types of materials. The European strategy regarding recycling concerns prevention, reuse and recycling of waste. The main materials that can be recovered from construction and demolition waste are: excavate...

One of the major problems associated with exploitation of the copper ore deposit in underground mines in Poland is the local disturbance in a state of stable equilibrium manifested in a sudden release of strain energy stored in the deformed rock mass. It occurs mainly in the form of dynamic events which may result in rockbursts and roof falls. In order to face this threats, a number of organisational and technical prevention methods are applied in mines. It should be also noted that the greatest difficulties with ...

The paper examines the waste management issues in the villages annexed to administrative-territorial units of the Romanian cities which have been frequently neglected by urban waste operators. The lack of waste collection services in such peri-urban communities favored the illegal waste disposal practices particularly prior to EU accession. The extension of waste collection services from main cities to such areas is compulsory in order to mitigate the environmental risks and the public health threats. The paper es...

Inclusions in diamond associated minerals are additional information about the formation of minerals in the depths of the mantle. Considerable attention is paid to the study of rutile inclusions in garnets in literature. Until now, there is no consensus on formation of oriented needle-like inclusions, some authors consider them to be epitaxial intergrowths, others ? exsolution. This article contains results of the study of eclogitic garnets from heavy fraction of diamondiferous volcanogenic sedimentary rocks of th...

The subject of this paper is the assessment of the influence of the construction and design elements on traffic safety at level crossings in undermined areas. The first part is dedicated to level crossings in the Czech Republic and accident rates at level crossings in the Moravian-Silesian Region. The following part describes the in situ experiment, which was conducted at selected crossings with different types of safety arrangements, intensity of traffic and traffic moments. Our results were compared with the res...

In Latvia, according to Central Statistical Bureau data (2018), the agricultural industry employed 76.4 thou. employees in the main job as well as 49.4 thou. seasonal workers. For this reason, this industry plays an essential role in the national economy, and with the industry developing, labour-saving technologies are increasingly introduced to reduce manual work in agriculture. Besides, mineral fertilisers and plant protection products are intensively applied (organic farms are an exception) in order to increase...

Timberline and treeline ecosystems are one of the most sensitive to climate warming. The sensitivity and response of treeline vegetation to environmental changes, especially to climate extremes, are increasingly discussed. Since treeline heterogeneity appears from regional to smaller scales the approach must be improved by including time scale from short to long-term. In treeline ecosystems the height growth of tree species in the first decades of life are good indicators of adaptability to climate changes. The he...

Recently, satellite monitoring has recognized a wide use in estimating ecological situations in vast areas, including ice cover layer; monitoring the negative effects of earthquakes, volcanic eruptions, landslides, mudflows and much more. Drought is one of the negative natural phenomena, which in its extreme forms can lead to life losses and substantial property damage. Satellite monitoring can be used to observe the change in lake coastline due to drought and predict the directions of further changes. The paper p...

One of the most significant goals of the educational system has become the aim of shaping of a personality with a high level of ecological culture with the aim to constant self-development, the progress of society and the priority of universal values, capable of perceiving and realizing the ideas of co-evolution and providing due to their activities a stable development of humanity in future. The success of its solution depends on multitude of factors, among which the time of en culturation of agrowing person to e...

The publication attempts to unify the scope of reclamation works in the agricultural, forest and aquatic directions. For the analysis of the works scope, three phases of reclamation were adopted: preliminary, basic (technical) and detailed (biological). Preliminary reclamation consists in the analysis of factors affecting the selection of a reclamation direction, establishing the direction of reclamation and the development of design-estimate documentation. Basic (technical) reclamation consists in the shaping of ...

The paper focuses on seal defect of dam system of an impoundment with deposition of calcareous sludge. The seal defect of the impoundment dam system, consisting of a homogeneous ground dam, occurred due to its underflow by desludged water. This paper lists causes of the underflow at the dam system, based on analysis of the original engineering-geologic survey, construction method of the dam body, floating method at the impoundment and additional engineering-geologic survey. The primary cause of the defect is prese...

The paper presents solutions for the sealing of the foundation plate inside a compliant landfill, the conditions necessary for the selection of certain materials in execution. Geometry of landfills (shape and dimensions in horizontal and vertical planes) often follows the site's orography, is influenced by the hydrogeology of the underground profile (groundwater level, inadequate or rocky land and difficulties with excavation), stability in the slope for the maximum possible weight (also related to the angle of se...

Physical-chemical and microbiological parameters of waters of rivers are determined seasonally in the waters of small and big rivers of Adjara Black Sea coastline (Georgia). The object of research was the following rivers flowing to The Black Sea: Chorokhi and Acharistskali (length-438 and 95 km), from small rivers?Kubastskali, Bartskhana, Korolistskali, Chakvistskali and Kintrishi (length<75 km). The strong smell was found on the Kubastskali river (5 points) and the Bartskhana (4 points) river. Their color was ye...

This study evaluates the seasonal habitats preference of selected macrozoobenthos (Ephemeroptera, Trichoptera and Plecoptera) in the Ostravice River. The Ostravice River is located in the Moravian-Silesian Region, the Czech Republic. For macrozooentos sampling in 2016 and 2018, a standard 3-minute semiquantitative multihabitat sampling method including a manual benthos net sampler was used. Macrozoobentos was collected from the surface of upper side of the stones, underside of the stones, side of the stones of 20-...

Bioluminescence field in the Black Sea is formed mainly by accumulations of luminous dinoflagellates, which along with other microalgae are an important component of marine ecosystems. The study of bioluminescence field variability, which reflects the structural and functional parameters of phytoplankton, redounds to a more detailed insight into its spatial and temporal heterogeneity. The article presents the analysis of bioluminescence field structure, measured in five marine expeditions onboard the research vess...

Interpretation of climate change and deglaciation events from palaeovarves requires a complete understanding of varve composition, depositional environments and the non-climatic events that may influence varve thickness record. We examined a Baltic Ice Lake varve-thickness chronology from western Estonia, eastern Baltic Sea, composed of 26 individual varve series and spanning 584 years of Late Weichselian deglaciation. The direction (azimuth) to the increasing seasonal layer thickness and correlation between the w...

Study case is river Maciovita, Caras Severin County. Sediment transport model is applicated different both in terms of time and space scale, study objectives, required accuracy, allocated resources, background of the study team etc. Sediment transport modelling, have necessity to know all characteristics of the sediment. Therefore, it is recommended to collect a number of bed sediment grap from geological study or from examples. These examples analyzed terms of grain size distribution. To solve theoretical problem...

Since ancient times, the coastal areas were natural habitats that host a wide variety of fauna and flora species and which, from an anthropological point of view, are the most populated areas of the planet. At the same time, these areas, which include deltas, lagoons and marshlands, are particularly vulnerable to the effects of global change (climate modification, sea level rise and fluctuation of sediment input) that may be triggered by anthropogenic activities (global warming due to greenhouse gases produced dur...

The paper presents accelerations, response spectra and spectral ratio for two tower-type buildings, one in Southern part of Bucharest, T1, at ~160 km from the epicenter zone, and other, T2, near the epicenter zone, Vrancea. These seismic characteristics are all from recorded earthquakes triggered in the above mentioned area. 3 triaxial seismic accelerometers were used on 3 levels at each building. The accelerations recorded on the analyzed structures were a result of Vrancea medium magnitude earthquakes between 20...

Extraction of the copper ore deposit in the Legnica-G?ogow Copper Basin in Poland is usually associated with high seismic activity. In order to face this threats, a number of organizational and technical prevention methods are utilized, from which blasting works seem to be the most effective. A significant number of recorded dynamic events may be clearly and directly explained by the effects of this approach. It is also expected, that the simultaneous firing of a number of mining faces may provide the amplificatio...

The complicated geodynamic situation occurred as the result of the intensive exploitation of Verkhnekamskoe potash deposit (VKMKS) was complexified by induced accidents in 1995, 2007 and 2014. Most of the city of Berezniki is located above the minefield of the BKPRU-1 mine. The exploitation of the potash since 1995 has been accompanied by continuous seismic monitoring, its data are used both for operational control and forecast purposes. Starting from the part of the mine SKRU-2 in 1995 the system has been expande...

The article devoted to issues of organization of regime observations in the system of geodynamic karstological monitoring, which is carried out with the active development of karst or karst-suffusion processes with a high degree of danger for the construction. It is noted that for stationary observations it is necessary to provide quantitative characteristics of changes in individual components of the geological environment in time and space that must be sufficient to assess and predict the development of the kars...

Despite the existence of many technologies allowing for recovery of coal combustion products (CCPs), they still remain a product that is problematic enough, with their industrial use in the world lying in the range 40-60%. The remaining CCPs produced in the energy industry end up in landfills or are stored, thus losing their property. One of the main directions of CCPs recovery has been, for many years, the underground mining industry, where they are used, among others, as fillings in mining excavations, component...

The effectiveness of the higher educational institutions work is currently being given greater priority. Every year, the Ministry of Education and Science of the Russian Federation carries out an appropriate monitoring upon seven indications, along with an internal evaluation of the universities work on an expanded list of indicators for the purpose of ranking the universities and their managers. In order to improve the effectiveness of educational activity of higher educational institutions, the possibility of cr...

Earthworms of species Eisenia fetida (Savigny 1826) (red wiggler worm), are known as eaters of a large range of organic matter, being considered from this point of view real solvers of several issues regarding the wastes management. This study intended to show that paper wastes (copy paper) can be eaten by earthworms Eisenia fetida and thus this type of waste can be managed by introducing it into the diet of this earthworm species. The objectives of the study were two: 1) to determine the relationship existing bet...

Particle boards are increasingly being used as a structural material. The quality of the wood from which they are made, has been steadily declining. This provides the means for tackling possible ways of particle board mechanical properties preservation and improvement. The methods and results of experimental investigation on the additive influence of shungite nanopowder whenmixed in the glue for one-ply particle board are presented in the article. Wooden particles of coniferous and hardwood species as well as glue...

Fragments of ferruginous brecciated limestones were studied in Bashkirian geological cross-sections in central part of Volga-Ural sedimentary basin. It is established that ferruginization of carbonate rocks is not controlled by facies. Mudstones, stromatolite boundstones and foraminiferal packstones have traces of diagenetic ferruginization. All carbonates are characterized by leaching traces in the form of sub vertical and inclined fractures and big pores filled by fine-grained calcite. Clasts of ferruginization ...

Graphic signs and fragments of images on the walls of megalithic buildings and individual stone blocks are not so common. However, their presence greatly enhances the value of ancient monuments of material culture in order to understand the way of thinking of ancient people much better. Portugal is a land where the density of megalithic monuments identified is one of the largest in Europe, but in Portugal itself, in the environs of Evora and Elva the number of such monuments is one of the largest. One of the most ...

The method of two-phase locking (2PL) is still used in concurrency access in the global transaction management. It has its advantages in distributed database management systems (DDBMS), conflicted events. The paper views modeling algorithms of Centralized, Distributed and Primary copy Two-version Two-phase locking. The presented algorithms are models of the corresponding variants of the 2PL protocols for DDBMS using two versions. As in concurrency control of distributed transactions in DDBMS deadlocks are possible...

An important problem in assessing water quality is that the data on water pollution and their analysis are formed over the previous period, and as a result, it is difficult to assess the current status of water resources, the more likely it is to predict it for the future period, which would allow timely action on improvement of the ecological state of water. The purpose of the work is to evaluate the possibility of using neural networks to simulation of surface water pollution. The data are derived from the resul...

For underground extraction of coal are running a complex network mining vertical, horizontal and inclined role extraction, transportation and evacuation on the surface. Associated system of mining works has the ventilation network to ensure the oxygen necessary for workers, diluting explosive gases and toxic substances and evacuated heat and humidity from the underground. For air evacuation from the underground workings, from the point of entry of fresh air to the polluted air exit point, is used powerful fans loc...

The erosion of the soil, through the changes it brought to the soil cover and by the direct and indirect damage it produced, amplified and diversified the research in the field. In the soil erosion study, a particular importance is given to the slopes, showing, apart from their inclination, the exhibition, the uniform or varied appearance, the degree of fragmentation, the degree of erosion. The slope is expressed in percents and it is determinate the length of this slope (declivity), because these characteristics ...

In manufacturing conditions marking of the parts is used many times. Marking is necessary for storage, transportation, in keeping records in plants or in the exploitation by the customers. In each situation mark given to part is necessary for identification, verification of the position correctness, etc. Marking is often carrying on by bonding the labels or painting. These methods, even though in common practice have some disadvantages: the label can be broken or destroyed and paintings can be scraped off. Sometim...

This article presents the analysis of the existing schemes of mining, logistics and consumption of fuel in North Yakutia which ones are form technological chains unique in complexity of management. This is due to negative impact of a large number of analyzed factors. The general trend is towards to reduction of coal consumption in hard-to-reach regions. Therefore, local coal deposits near the key points of consumption are not developed. Geotechnical and economic indicators of small-scale coal mines are generally l...

One of the fields where the principles of intelligent systems are significantly reflected is logistics. Smart intelligent features are used across different disciplines, and their technological development influences progress in the industry. [1] One of the fields, where the principles of smart systems are nowadays implemented, is logistics. Autonomous smart elements communicate with each other using the Internet of Things and provide more effective support and communication for their digital twin (cyber-physical ...

Snow blizzards and snow drifts have recently proven as major winter threat for the road traffic, communications and social life in northeast Bulgaria. The geographical location of these regions with respect to the tracks of the winter Mediterranean cyclones and cold advections from north and northeast makes them indeed prone to this risk, but one would like to know if there is a significant rise in their number and severity. The main goal of the current study is exactly the investigation of the contemporary tenden...

In this article, considering the process of preparing the regulated stage of construction for hazardous objects of a high degree of responsibility - this is an assessment of the impact of the proposed construction on the environment (EIA). The main attention is paid to the socio-technical aspects of the EIA procedure, as a tool for data collection for making management decisions. In this paper, we highlight the importance of a comprehensive assessment of the construction site and taking into account the features o...

Any infrastructure investment is implemented in specific environmental surroundings and among specific local community. Its consequences include changes in spatial land management and environmental transformations, often leading to social-spatial NIMBY conflicts (Not In My Back Yard). Such conflicts currently constitute a very serious problem of local socio-political life in Poland, and reflect the imperfections of the planning and spatial management system. They result from the conflict of interests of the invest...

Mari El is one of the most ecologically clean areas of Russia. The local woods are famous throughout Russia and is the largest forest on the Volga river, which contain large amounts of wood and at the same time, every year increasing its use for recreation. Therefore, recreational use should pay a lot of attention. This paper examines the state of objects in the mass use of forest resources for recreational purposes on the territory of the coastal zone of suburban lakes. Conducted socio-environmental assessment at...

A task-oriented software and hardware system is designed for the operational selection of the instrumentation and process design options of pressure swing adsorption (PSA) processes. It will also control physical experiments to study the kinetics and dynamics of adsorption purification and separation of multicomponent gas mixtures and carry out mathematical modeling, optimization of operating cycles and optimal design of energy- and resource-saving PSA units. The possibilities of a task-oriented system are demonst...

In the last few years, the world of Internet communications as well the application?s requirements has changed significantly in terms of speed, quality of service, computing, storing, security, energy consumption, availability, and etc. Everything gets connected to the Internet and accessible from anywhere, anytime. The traditional networks based on distributed control and network transport protocols are not enough flexible, and are hard to be managed. To overwhelm this problem, the software defined networking (SD...

The importance of this topic is derived from the fact that the agricultural production takes place under the influence of a complex of environmental factors and conditions modified in time and space by human intervention, which requires the knowledge of all ecological determinants in terms of their productive capacity in order to choose those more appropriate crops and technological measures for their sustainable management. The purpose of the researches is based on current scientific and practical preoccupations ...

Soil pollution with heavy metals is a major global environmental problem for many ecosystems. The exploitation and processing of non-ferrous ores are one of the most important anthropogenic sources of soils contamination with heavy metals. Romania is a rich country in mineral resources, therefore it has a long history of their exploitation. In this regard, there are several areas for the non-ferrous ores extraction, and one of them is located in the Metaliferi Mountains, where the tradition in gold, silver and oth...

The main goal of compaction is decreasing the porosity of soils. Gravel columns belong to relatively new methods of improving the soil characteristics. Using them it is possible to expect to accelerate the consolidation of the subsoil, but also increasing the bearing capacity and decreasing the settlement of initially unadvisable soils. Because it was missing adequate research in this field, the design of gravel columns was based a long time on empirical experiences. Particularly based on foreign knowledge are pre...

Archaeological objects, such as fortification ramparts and burial mounds are widely spread on the Russian Plain and commonly buried soils have well preserved beneath. For Late Holocene, especially after 2500 BP, the climatic trends for the Russian Plain are still uncertain. Chronosequences of surface soils and soils buried under defensive ramparts of ancient settlements Mukhino, Ksizovo and Degtevoe in the Central Forest-Steppe zone, Lipetsk region was studied. Five defensive earthworks differ in age from 2500 to ...

This study is aimed at evaluation of organic carbon dynamic after compost application. Object of study was heavily degraded Calcaric Chernozem (Vele?ovice) localized in the south region of Moravia in the Czech Republic, during the field experiment 2012?2016. The experiment was established in a sugar-beet growing region, the altitude of this locality was 298 m a.s.l. and the local climate was classified as warm and slightly arid. Values of long-term average annual precipitations and annual temperatures were 490 mm ...

Among the energy sources alternative to fossil fuels, renewable energy sources such as solar garner the public?s attention, as they are available and have fewer adverse effects on the environment than do fossil fuels. Solar heating systems are a type of renewable energy technology that has been increasingly used in the past decade across Europe to provide heating, air-conditioning, and domestic hot water (DHW) for buildings. This paper provides a briefly review of the available heating technologies assisted by sol...