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Showing 1-50 of 2006 records
SWS 2026 Conference Preprints
Publication

A GREEN CHEMISTRY APPROACH TO THE FACILE SYNTHESIS OF AMINOANTHRAQUINONE DERIVATIVES

(STEF92 Technology, 2026, Andrejs Grigorjevs, Elena Kirilova, Romans Fridmans, Irena Mihailova, Sergejs Osipovs)

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Developing processes with minimal environmental impact is essential for the production of the important intermediates and final products. Present study explores the green and low-cost synthesis of new halogenated derivatives of 1-aminoanthraquinone under catalyst free conditions at room temperature. These derivatives find wide practical application due to their unique properties. Numerous studies on the preparation of new derivatives have been devoted to the development of industrial dyes and pigments. These compo...

Recycling2026
SWS 2026 Conference Preprints
Publication

AGRICULTURAL LAND ABANDONMENT AS A DRIVER OF LANDSCAPE CHANGE: ASSESSMENT OF SUCCESSIONAL PROCESSES AS A BASIS FOR DESIGNING ADAPTIVE MANAGEMENT MEASURES

(STEF92 Technology, 2026, Jakub Pagac, Zlatica Muchova, Alexandra Pagac Mokra, Karol Sinka)

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Agricultural land abandonment represents a significant landscape-forming process affecting vegetation structure, soil stability, and the functionality of agroecosystems. This paper focuses on the identification and mapping of agricultural unused land (AUL) in the cadastral territory of Velke Trencianske Stankovce (Trencin district, western Slovakia). The analysis is conducted on 371 state-owned parcels and parcels with unknown or unidentified ownership managed by the Slovak Land Fund, covering a total area of 98.0...

Soils2026
SWS 2026 Conference Preprints
Publication

AN EMPIRICAL ANALYSIS OF WORKFLOW-STRUCTURE ALIGNMENT IN INFORMATION-INTENSIVE ORGANIZATIONS

(STEF92 Technology, 2026, Andrejs Cekuls, Signe Balina, Andris Kikans, Laila Cekule)

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Functional fragmentation remains a critical constraint in information-intensive organizations, limiting workflow coherence and reducing overall process performance. This study provides an empirical analysis of workflow–structure alignment, with particular emphasis on coordination and governance mechanisms as means of integrating fragmented functional activities. Drawing on Business Process Management (BPM) and socio-technical systems theory, alignment is conceptualized as the integration of organizational struct...

Environmental Economics2026
SWS 2026 Conference Preprints
Publication

ANALYSIS OF REAL-TIME HEATING ENERGY DATA DURING THE BUILDING RENOVATION PROCESS

(STEF92 Technology, 2026, Stanislavs Gendelis, Andris Jakovics, Eizens Putnins)

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This paper analyses a multi-apartment residential building undergoing staged renovation during the heating season using real-time, hourly metered heat consumption data over two consecutive winters in a temperate-cold climate. The renovation is implemented in clearly identifiable phases, which enables an empirical, measure-by-measure assessment of changes in heating demand as works progress. The analysed interventions include insulation of basement heat distribution pipework, attic insulation, external wall insulat...

Green Design and Sustainable Architecture2026
SWS 2026 Conference Preprints
Publication

ANALYSIS OF THE FANTANELE-COGEALAC WIND FARM PERFORMANCE BASED ON A NEURAL-NETWORK APPROACH

(STEF92 Technology, 2026, Roberto-Adrian Dobri, Florin Onea)

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The present work investigates the performance of the Fantanele-Cogealac wind farm through the application of a neural-network-based modeling approach, aiming to capture the correlations between various meteorological parameters and the performances of a wind turbine. As a first step, the meteorological conditions from the vicinity of this site were evaluated from a statitiscal and seasonal point of view, by considering MERRA-2 dataset covering the time interval 2018-2025. The results are indicated in terms of surf...

Geoinformatics2026
SWS 2026 Conference Preprints
Publication

ANTHROPOGENIC IMPRINTS ON THE NATURAL ENVIRONMENT AND WATER RESOURCES IN THE CHEPINSKA AND CHEPELARSKA RIVER BASINS (WESTERN RHODOPES, BULGARIA)

(STEF92 Technology, 2026, Emilia Tcherkezova, Kalin Seymenov, Krasya Kolcheva, Elitsa Zareva, Dragomir Vassilev)

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Anthropogenic imprints, including hydromorphological pressure and illegal land use through unauthorised dumping and wastewater discharge, are various forms of human activity that often have lasting impacts on the natural environment. Despite this, integrating them into ecological assessments and water and natural resource management remains underexplored at the river basin scale. This study aims to investigate and analyse illegal dumping and pressures on freshwater resources in the Chepinska and Chepelarska River ...

Hydrology and Water Resources2026
SWS 2026 Conference Preprints
Publication

ASSESSMENT OF HYDROBIOLOGICAL PRODUCTIVITY OF SMALL RESERVOIRS UNDER THE INFLUENCE OF ECOLOGICAL AND CLIMATIC STRESS FACTORS IN SOUTHERN UKRAINE

(STEF92 Technology, 2026, Sofiia Melnychenko, Olena Honcharova, Larysa Bohadorova, Viktoriia Boiko, Andrii Shepel)

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The research focuses on the main aspects of assessing the hydrobiological and ecological state of small reservoirs in the context of current climate change and its impact on food resources. In the context of anthropogenic load, the impact of military actions on the ecosystems of southern Ukraine, the topic is highly relevant and timely. Given the complex impact of these processes on the food resources of aquatic ecosystems, fish productivity and hydroecological state, the topic also has increased practical signifi...

Ecology and Environmental Protection2026
SWS 2026 Conference Preprints
Publication

ASSESSMENT OF OPERATIONAL RISKS SPECIFIC TO THE TRANSPORT CHAIN OF DANGEROUS GOODS BY ROAD.

(STEF92 Technology, 2026, Claudia Miron, GABRIEL DRAGOS VASILESCU, DANIELA CARMEN RUS, IOAN GABRIEL ILCEA, AURELIAN HORIA NICOLA)

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This paper highlights the results of the assessment of operational risks related to the components of the dangerous goods transport chain. Due to the fact that multiple parties are involved in handling and transport procedures, numerous different risks may arise during activities involving dangerous goods. By identifying and assessing risks, the most critical ones are identified and evaluated according to the potential damage they may cause to the entire transport chain. The results of the risk assessment in the t...

Applied and Environmental Geophysics2026
SWS 2026 Conference Preprints
Publication

ASSESSMENT OF THE ROMANIAN ELECTRICITY MARKET BETWEEN 2024 AND 2025

(STEF92 Technology, 2026, Roberto-Adrian Dobri, Florin Onea)

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The Romanian electricity market has undergone substantial structural transformations during the last decade as a consequence of energy transition policies, increasing integration of renewable energy sources and geopolitical developments affecting European energy systems. The period between 2024 and 2025 represents a relevant timeframe for evaluating the evolution of electricity generation, consumption patterns and the balance between supply and demand within the national energy system. This study provides an asses...

Environmental Economics2026
SWS 2026 Conference Preprints
Publication

BIOCHEMICAL MODIFICATION AND HARVESTING OPTIMIZATION: A STUDY OF FOUR SEA BUCKTHORN VARIETIES

(STEF92 Technology, 2026, Ancuta Chetrariu, Ionut Avramia, Adriana Dabija, Irina Dianu, Artur macari)

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Sea buckthorn is a heliophilous species valued for its nutrient-rich orange berries, which find extensive applications in the pharmaceutical, food, and agricultural industries. This study monitored four specific cultivars: Dora, Cora, Mara, and Clara, grown in the Republic of Moldova over a 60-day period (August to September). The research focused on tracking the evolution of primary ripening indicators: vitamin C, total carotenoids, and organic acid content. Ascorbic acid, a vital bioactive component, showed a co...

Recycling2026
SWS 2026 Conference Preprints
Publication

BRIDGING LANGUAGES, BRIDGING NATIONS: TRANSLATION AS A TOOL FOR INTERNATIONAL CLIMATE CHANGE MITIGATION

(STEF92 Technology, 2026, Raul Pascalau, Sorin MIhai Stanciu, Laura Iosefina Smuleac, Carmen Simona Dumitrescu, Adrian Smuleac)

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International cooperation is essential for effective climate change mitigation, yet linguistic diversity remains an underrecognized barrier to equitable participation and knowledge exchange. This article examines translation as a critical yet overlooked tool for facilitating international climate action, arguing that language mediation enables the cross-border flow of scientific knowledge, policy frameworks, technological innovations, and civil society mobilization essential for global mitigation efforts. Drawing ...

Education and Accreditation2026
SWS 2026 Conference Preprints
Publication

CENTRALIZED WORKFLOW AUTOMATION FOR TECHNICAL-SCIENTIFIC PDF PROCESSING IN GEOINFORMATICS ENVIRONMENTS

(STEF92 Technology, 2026, Laurentiu Munteanu, Andrada Denisa MATEI, Marius Cornel SUVAR, Zoltan VASS, Marius Morar)

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The paper presents a centralized workflow automation solution for processing technical-scientific PDF documents in geoinformatics-oriented organizational environments. The proposed system addresses repetitive document-processing activities associated with scientific reporting, technical documentation, scanned archives, and institutional digital workflows, particularly in situations where users do not possess advanced PDF-processing skills. The solution is implemented using a continuously operating Windows server o...

Geoinformatics2026
SWS 2026 Conference Preprints
Publication

CHARACTERIZATION IN TERM OF THE SELF-IGNITION BEHAVIOR FOR COMBUSTIBLE DUSTS DERIVED FROM TECHNOLOGICAL PROCESSES

(STEF92 Technology, 2026, Irina Nalboc, Maria Prodan, Andrei Szollosi Mota, Sonia Suvar)

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Combustible dusts are presented in industry as a finished products or process intermediates created voluntarily by milling or involuntarily by abraison of larger sized solid. Spontaneous combustion is a phenomenon that occurs by self-heating, increase in temperature due to exothermic internal reactions, followed by thermal runaway (self heating which rapidly accelerates to high temperatures) and finally, autoignition. The oxidation of combustible powders occurs when they react with air oxygen, producing carbon dio...

Recycling2026
SWS 2026 Conference Preprints
Publication

CIRCULAR ECONOMY IN PUBLIC FOOD SERVICES: SUSTAINABLE MODELS FOR REDUCING FOOD WASTE

(STEF92 Technology, 2026, Merce Iuliana Merce, Ioana Anda Milin, Tabita Adamov, Claudia Sirbulescu, Dragos Chende)

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In the context of increasing pressure on natural resources, driven by population growth, accelerated urbanization, and changing consumption patterns, the issue of food waste is gaining growing relevance at the global level. The food service sector, as an integral part of the HoReCa industry, contributes significantly to this problem, being characterized by high production volumes, demand variability, and operational complexity. Within this framework, the circular economy emerges as an essential alternative model t...

Environmental Economics2026
SWS 2026 Conference Preprints
Publication

COMPENSATING FOR MOISTURE DEFICIT IN BLUEBERRY (VACCINIUM CORYMBOSUM) USING ARBUSCULAR MYCORRHIZA UNDER CENTRAL EUROPEAN CONDITIONS.

(STEF92 Technology, 2026, Jan Mezey, Adrian Selnekovic, Dusan Igaz, Viliam Barek, Tomas Holota)

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Arbuscular mycorrhiza, a widespread mutualistic association between fungi of the phylum Glomeromycota and plant roots, plays an important role in improving plant nutrition and tolerance to environmental stress. Through this symbiosis, fungi supply mineral nutrients and enhance resistance to drought and pathogens, while receiving assimilates from the host plant. This study was conducted on a commercial plantation of blueberry (Vaccinium corymbosum) in southwestern Slovakia. The plantation was inoculated with mycorr...

Soils2026
SWS 2026 Conference Preprints
Publication

CONSIDERATIONS REGARDING THE APPLICABILITY AND DISTRIBUTION OF EXPLOSION PROTECTION TYPES IN EXISTING INDUSTRIAL INSTALLATIONS INTENDED FOR USE IN POTENTIALLY EXPLOSIVE GAS AND VAPOUR ATMOSPHERES

(STEF92 Technology, 2026, Valentin Sirbu, Sorin Radu, Mihai Magyari, Dragos Fotau, Sorin Zsido)

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Existing industrial ammonia production installations operating in potentially explosive atmospheres usually contain a wide range of explosion protection concepts implemented during different stages of plant modernization and expansion. In such brownfield installations, the coexistence of equipment originating from different technological periods often leads to a non-uniform distribution of protection concepts at installation level. This aspect is particularly relevant for industrial sectors associated with oil and...

Oil and Gas Exploration2026
SWS 2026 Conference Preprints
Publication

CONTRIBUTIONS REGARDING THE OPTIMIZATION OF NUMERICAL MODELS FOR THE SIMULATION OF HYDROGEN EXPLOSIONS

(STEF92 Technology, 2026, Vlad Mihai Pasculescu, Nicolae Ioan Vlasin, Marius Cornel Suvar, Adrian Bogdan Simon-Marinica, Gheorghe Daniel Florea)

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In the context of the transition to a hydrogen-based economy, the assessment of the risks associated with this energy vector is becoming a priority for industrial safety. The unique properties of hydrogen, its high reactivity and high burning rate, require the use of advanced numerical simulation tools, capable of providing highly accurate predictions of the effects of explosive phenomena. This paper presents methodological contributions aimed at optimizing the numerical models used for the analysis of explosions ...

Renewable Energy Sources and Clean Technologies2026
SWS 2026 Conference Preprints
Publication

CORRELATION BETWEEN MEASUREMENTS MADE BY THE GRAVIMETRIC METHOD AND THE OPTICAL METHOD FOR THE DETERMINATION OF PM10 DUST IN AMBIENT AIR

(STEF92 Technology, 2026, Marius Kovacs, Angelica-Nicoleta Gaman, Alexandru-Florin Simion, Vlad-Alexandru Lautaru, Petre-Cristian Livadariu)

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Dust sampling equipment exhibits significant variations over time depending on the operating principle, being influenced by interaction of environmental factors, such as air flow velocity, relative humidity, ambient temperature and barometric pressure. The objective of this study is to perform a comprehensive comparative evaluation between the gravimetric reference method and the optical method for determining PM10 particles in ambient air. In order to allow the evaluation of each observation in relation to method...

Air Pollution and Climate Change2026
SWS 2026 Conference Preprints
Publication

DETECTING URBAN GROUND INSTABILITY USING RECURRENT UAV LIDAR SURVEYS: CAPABILITIES AND LIMITATIONS FROM A SALT-KARST MONITORING SITE IN ROMANIA

(STEF92 Technology, 2026, Eduard Nastase, Alexandru Tiganescu, Dragos Tataru)

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Urban areas developed above salt-karst systems are particularly sensitive to ground deformation processes driven by dissolution, suffosion, and anthropogenic disturbances. Detecting and monitoring these processes in densely built environments requires observation techniques capable of capturing small-scale morphological changes with high spatial resolution and repeatability. This study demonstrates the use of recurrent UAV-based LiDAR surveys to detect and measure ground instability in the town of Slanic Prahova (...

Photogrammetry and Remote Sensing2026
SWS 2026 Conference Preprints
Publication

DETERMINING THE DECLINATION IN ROMANIAN AIRPORTS

(STEF92 Technology, 2026, NATALIA-SILVIA ASIMOPOLOS, LAURENTIU ASIMOPOLOS, ADRIAN-ARISTIDE ASIMOPOLOS, LUMINITA DINU, EUGEN LAURENTIU NICULICI)

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Civil aircraft navigation uses specific procedures for the continuous determination of the aircraft position using the path and distance traveled in the considered time interval as calculation elements. Throughout the route, errors must be estimated that are generated by a series of parameters such as: hydrometeorological conditions, air current direction, declination, geoid parameters, the ship's nautical qualities and the response mode of the navigation equipment. The indications of the magnetic compass must be ...

Geodesy and Mine Surveying2026
SWS 2026 Conference Preprints
Publication

DEVELOPING LABORATORY EQUIPMENT FOR HYGROTHERMAL PERFORMANCE ASSESSMENT OF INSULATION MATERIALS

(STEF92 Technology, 2026, Ana Maria Ghita, Andrei-Dan Sabau, Matei-Stelian Serbulea)

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The building and construction sector remains one of the largest contributors to global climate change, thus the industry is focusing on reducing the embodied emissions from materials and minimizing operational energy through superior building envelope performance. As the industry transitions from traditional products to advanced bio-based materials, the requirements for measurement precision, dynamic response tracking, and environmental simulation have surpassed the capabilities of legacy instrumentation. Modern l...

Green Buildings Technologies and Materials2026
SWS 2026 Conference Preprints
Publication

DEVELOPMENT OF LABORATORY TESTS TO DETERMINE PROTECTION AGAINST WATER PENETRATION INSIDE THE HOUSING OF EQUIPMENT INTENDED FOR USE IN EX ENVIRONMENTS

(STEF92 Technology, 2026, Catalin-Mihai Popa, Florin Adrian Paun, Mirela Ancuta Radu, Sorin Rasnoveanu)

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The presence of flammable and/or combustible substances in various industrial production processes generates in most cases potentially explosive atmospheres, which transforms a regular work environment into an explosion risk area, directly influencing the way in which equipment intended to be used in these areas is designed, installed and maintained. In areas where potentially explosive atmospheres may form due to the presence of flammable and/or combustible substances, technical equipment must be used whose casin...

Oil and Gas Exploration2026
SWS 2026 Conference Preprints
Publication

DIGITALIZATION AND INTELLIGENT MONITORING OF EQUIPMENT OPERATING IN POTENTIALLY EXPLOSIVE ATMOSPHERES

(STEF92 Technology, 2026, Sorin BURIAN, Danut Grecea, Cosmin COLDA, Alexandru BELDIMAN, Gabriela PUPAZAN)

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Potentially explosive atmospheres constitute a major risk in the operation of industrial installations that use or generate gases, flammable vapours or combustible dust. According to ATEX legislation, explosions can occur as a result of the interaction between an explosive atmosphere and an active ignition source. Even under the conditions of using ATEX-certified equipment, the progressive degradation of the components can lead to the appearance of uncontrolled ignition sources. This paper analyzes from a technica...

Oil and Gas Exploration2026
SWS 2026 Conference Preprints
Publication

E-WASTE MANAGEMENT IN KOCHI, INDIA: BEHAVIORAL DRIVERS AND CIRCULAR ECONOMY IMPLICATIONS

(STEF92 Technology, 2026, Naibin George, Andrejs Cekuls, Sweety Joy C)

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This article identified the issue of electronic waste (e-waste) management in Kochi, India, amongst the country's rapid technological growth and escalating electronic consumption. It highlights the severe environmental and health risks of improper e-waste disposal, particularly in the informal recycling sector, which dominates India's recycling landscape. The article emphasises the need for a transformative shift from the existing cradle-to-grave (C2G) system to a Cradle-to-Cradle (C2C) model for circular e-waste ...

Recycling2026
SWS 2026 Conference Preprints
Publication

EARLY OBSERVATIONS FROM MULTI-METHOD MONITORING OF GROUND INSTABILITY IN A SALT-KARST URBAN AREA

(STEF92 Technology, 2026, Dragos Tataru, Eduard Nastase, Bogdan Grecu, Alexandru Tiganescu, Alexandra Gerea)

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Urban areas built above salt deposits are especially vulnerable to ground instability caused by dissolution, suffosion, and human activities. Monitoring these environments is difficult due to the complex subsurface structures and dense infrastructure constraints. Understanding the dynamics of these processes requires combining multiple investigation and monitoring methods to capture both underground conditions and surface movements. This paper shares initial findings from an ongoing multi-method monitoring project...

Applied and Environmental Geophysics2026
SWS 2026 Conference Preprints
Publication

EFFECT OF CARBONATION AND HIGH HUMIDITY ON MAGNESIUM OXYCHLORIDE CEMENT COMPOSITES MODIFIED WITH GRAPHENE

(STEF92 Technology, 2026, Martina Zaleska, Milena Pavlikova, Adam Pivak, Zbysek Pavlik, Ondrej Jankovsky)

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Portland cement–based materials represent the most widely used construction materials worldwide. However, their production and application are associated with significant environmental burdens, including high CO2 emissions and the depletion of natural aggregate resources. In response to the growing demand for environmentally responsible construction solutions, this study focuses on the development of building materials based on an alternative binder. Magnesium oxychloride cement (MOC) is considered a more sustai...

Green Buildings Technologies and Materials2026
SWS 2026 Conference Preprints
Publication

ELECTROMAGNETIC SCREENS AND SHIELDING DEVELOPMENT

(STEF92 Technology, 2026, Octavian-Adrian Tabara, Raluca Aileni, Adrian-Cornel Marin, Razvan Radulescu, Valentin Baciu)

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Nowadays the communication is made mainly through electronic devices. These devices produce electromagnetic radiation that influences the quality of the sent signal. Also, health problems are generated due to the time spent in an electromagnetic medium that emits radiations. This paper presents some of latest screen developments regarding electromagnetic screens, advancements in shielding materials.

Renewable Energy Sources and Clean Technologies2026
SWS 2026 Conference Preprints
Publication

ENVIRONMENTAL IMPACT OF PLANT-BASED MILK ALTERNATIVES: AMARANTH, ALMOND, SOY

(STEF92 Technology, 2026, Mihaela Lacatus, Nicoleta Hadaruga, Monica Dragomirescu, Liana Maria Alda, Despina Maria Bordean)

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In recent years, with the interest in healthy diet and environmental protection, plant-based alternatives, to classic milk, have been developed and produced. In addition to the already well-known products, such as almond or soy milk, amaranth milk is also becoming increasingly known. Amaranth milk is considered a possible alternative with both nutritional and ecological benefits. As a result of environmental problems and people's needs, this paper aims to compare these types of plant-based beverages, in terms of c...

Recycling2026
SWS 2026 Conference Preprints
Publication

EVALUATION OF THE PROCESS OF UPDATE OF THE DIGITAL DATASET OF TECHNICAL MAPS IN THE CZECH REPUBLIC

(STEF92 Technology, 2026, Ondrej Vystavel, Dalibor Bartonek, Jiri Bures, Ladislav Barta)

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The aim of the article is to present selected experience with updating the digital technical map (DTM) dataset in the Czech Republic after 2 years of its widespread introduction into operation. The subject of the analyses was the methods of initial filling of the basic spatial situation (ZPS) data with new mapping of land roads and defined territories of technical infrastructure administrators. When updating the ZPS, accuracy problems of vectorization from LIDAR mobile mapping data and problems of the results of p...

Geodesy and Mine Surveying2026
SWS 2026 Conference Preprints
Publication

EXPERIMENTAL EVALUATION OF DUST THERMAL CONDUCTIVITY IMPACT ON MAXIMUM SURFACE TEMPERATURE AND IGNITION RISK OF EX EQUIPMENT

(STEF92 Technology, 2026, Dan Gabor, Catalin Mihai Popa, Anamaria Daroczi, Adrian Marius Jurca)

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This study investigates experimentally the influence of dust thermal conductivity on the maximum surface temperature of Ex equipment operating under dust layer conditions at a fixed dissipated power of 3 W. Experiments were conducted using a purpose-built resistive test sample, designed and manufactured at INCD INSEMEX, tested with two dust materials representing boundary conditions of thermal behaviour: vermiculite, selected as a worst-case insulating material, and Portland cement dust, selected for its industria...

Air Pollution and Climate Change2026
SWS 2026 Conference Preprints
Publication

EXPERIMENTAL MODEL FOR HOMOGENIZATION OF HYDROGEN - AIR MIXTURES

(STEF92 Technology, 2026, Adrian Simon-Marinica, Gheorghe-Daniel Florea, Vlad Mihai Pasculescu, Laurentiu Munteanu, Marius Morar)

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As is well known, hydrogen exhibits a wide flammability range, low ignition energy, and high diffusivity, which create significant explosion risks in storage and handling facilities. Therefore, the development of effective methods and devices for the detection and control of hydrogen explosions is essential to ensure operational safety. This paper presents the development and experimental validation of an explosion control device intended for hydrogen storage systems. The proposed device is based on an optical ult...

Renewable Energy Sources and Clean Technologies2026
SWS 2026 Conference Preprints
Publication

EXPERIMENTAL PERFORMANCE ASSESSMENT OF HYBRID SWING SYSTEMS IN QUARRYING ACTIVITIES: A COMPARATIVE ENERGY EFFICIENCY ANALYSIS

(STEF92 Technology, 2026, Sara Innocenzi, Dario Lippiello, Guido Alfaro Degan, Gianluca Coltrinari, Andrea Antonucci)

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The extractive industry is currently undergoing a transition toward operating models with reduced environmental impact and enhanced energy efficiency. This study aims to evaluate, through empirical data, the efficiency of an excavator equipped with a hybrid swing system compared to a conventional diesel-powered unit of the same class and performance level. The methodology involved a systematic monitoring period of 65 working days. To ensure a rigorous comparison, two crawler excavators in the 36-tonne class were d...

Exploration and Mining2026
SWS 2026 Conference Preprints
Publication

FLY ASH AS AN ALTERNATIVE SILICA SOURCE IN MAGNESIUM SILICATE HYDRATE CEMENT

(STEF92 Technology, 2026, Martina Zaleska, Milena Pavlikova, Adam Pivak, Zbysek Pavlik, Ondrej Jankovsky)

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In an effort to develop binders with a reduced environmental impact, magnesium silicate hydrate (MSH) cement has recently attracted considerable attention. This binder belongs to the family of magnesium-based cements; however, unlike magnesium sulphate and magnesium oxychloride cements, it is classified as a hydraulic cement. It forms through the reaction of reactive magnesium oxide with silica sources in the presence of water, producing magnesium silicate hydrate (MSH) gel. Caustic-calcined magnesite, typically p...

Green Buildings Technologies and Materials2026
SWS 2026 Conference Preprints
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FORMATION AND EARLY DEVELOPMENT OF MAGNESIUM SILICATE HYDRATE UNDER CONTROLLED CURING CONDITIONS

(STEF92 Technology, 2026, Adela Jirickova, Adela Kubistova, Ondrej Jankovsky, Martina Zaleska, Zbysek Pavlik)

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Magnesium silicate hydrate (M-S-H) is a promising binder phase for the development of low carbon cementitious materials. However, its formation mechanisms, phase evolution, and dependence on curing conditions remain poorly understood, particularly during the early and intermediate stages of hydration. This study investigates the formation and development of M S-H in model systems using reactive MgO and diatomite as the silica source, focusing on Mg/Si molar ratios of 0.75, 0.90, 1.05, and 1.20 under controlled cur...

Green Buildings Technologies and Materials2026
SWS 2026 Conference Preprints
Publication

FROM CAMERAS TO CONFLICTS: A REVIEW OF MODERN TECHNOLOGIES FOR TRAFFIC SURVEYS, VEHICLE TRACKING AND NEAR-MISS DETECTION AT INTERSECTIONS

(STEF92 Technology, 2026, Ondrej Mikstein, Dominik Gresica, Miroslav Pinka, Jan Petru, Vladislav Krivda)

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This review paper provides a comprehensive overview of contemporary traffic survey approaches, focusing on advanced data acquisition platforms and AI-based video analytics. The study highlights a significant transformation in traffic engineering, where traditional data collection methods are being complemented by modern solutions to provide detailed behavioral and safety-related insights. Central to this shift is the use of surrogate safety measures (SSMs) based on traffic conflicts and near-miss events, such as T...

Green Design and Sustainable Architecture2026
SWS 2026 Conference Preprints
Publication

GEOSPATIAL ANALYSIS FOR ADVANCED URBAN CONSTRUCTION SITE SUITABILITY

(STEF92 Technology, 2026, George-Calin Baltariu, Florin-Alexandru Luca, Adrian-Alexandru Serbanoiu)

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The spatial mismatch between available urban land and construction suitability constitutes a persistent challenge in civil engineering and urban planning, exacerbated by proprietary data costs and methodological opacity. This study formalizes a reproducible multi-criteria decision analysis framework leveraging vector datasets to derive quantitative construction site suitability indices through standardized geocomputation workflows. Employing buffer topology operations, Euclidean distance transforms, and weighted l...

Cartography and GIS2026
SWS 2026 Conference Preprints
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GEOSPATIAL HEATMAPS FOR CONSTRUCTION MARKETING: RAPID ANALYSIS OF SITE ATTRACTIVENESS

(STEF92 Technology, 2026, George-Calin Baltariu, Florin-Alexandru Luca, Adrian-Alexandru Serbanoiu)

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Construction marketing requires visual evidence of site potential to secure client commitment, but accessible geospatial tools remain limited for small developers. This study presents a streamlined analysis workflow generating client-ready heatmaps that quantify site attractiveness through standardized metrics: accessibility (road network proximity), visibility (line-of-sight exposure), and neighborhood quality (amenities proximity). Using conventional buffer analysis on crowd-sourced layers, the methodology produ...

Cartography and GIS2026
SWS 2026 Conference Preprints
Publication

HANDS-ON SPECTROSCOPY FOR CLIMATE AND ENVIRONMENTAL EDUCATION: FROM LOW-COST INSTRUMENTS TO MACHINE LEARNING ANALYSIS

(STEF92 Technology, 2026, Mihai Boni, Ilie Eduard Nastase, Alexandru-Catalin Macovei, Cristina Simionescu, Dragos Tataru)

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Understanding environmental change relies on observational technologies that analyze the interaction between electromagnetic radiation and matter. Spectroscopy provides the physical foundation for many sensing techniques used in Earth sciences, operating across the ultraviolet (UV), visible (VIS), and infrared (IR) spectral domains. Technologies such as LiDAR, thermal imaging, photogrammetry, and optical remote sensing rely on these principles to observe environmental processes and monitor changes in the Earth sys...

Education and Accreditation2026
SWS 2026 Conference Preprints
Publication

IMPACT OF DESIGNING THE SAME BUILDING TO DIFFERENT ENERGY PERFORMANCE STANDARDS ON LIFE-CYCLE COSTS

(STEF92 Technology, 2026, Stanislavs Gendelis, Andris)

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This paper analyses how designing the same single-family building to different energy performance standards affects its life-cycle costs. The study compares five design scenarios for one building, starting from the current national minimum energy performance requirement, moving through a typical nearly zero-energy building solution and an enhanced NZEB variant, and progressing towards a highly energy-efficient Passive House and a Passive House PLUS solution with on-site photovoltaic generation. Each scenario is ev...

Green Design and Sustainable Architecture2026
SWS 2026 Conference Preprints
Publication

IMPLEMENTATION OF INDUSTRIAL VENTILATION SYSTEMS AND ANALYSIS OF THEIR EFFICIENCY -CASE STUDY-

(STEF92 Technology, 2026, Razvan Dragoescu, Adrian Matei, Alexandru Camarasescu, EMERIC CHIUZAN)

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The role of ventilation systems is to ensure and maintain optimal microclimate conditions in industrial spaces, by controlling temperature, humidity, dust concentration and gaseous substances, within limits compatible with comfort and safety requirements. At the same time, these systems must respect permissible noise levels and air circulation speed, so as not to affect the well-being of users. In order to achieve the prescribed parameters of indoor air (temperature, pressure and humidity), it is previously subjec...

Recycling2026
SWS 2026 Conference Preprints
Publication

INNOVATIVE TOOL FOR RISK ANALYSIS IN THE TRANSPORT OF DANGEROUS GOODS AIMED AT OPTIMIZING THE PROCESS

(STEF92 Technology, 2026, Daniela Rus, CLAUDIA IULIANA MIRON, IONEL BARBUL, ALEXANDRU FLORIN SANTA, DENISA TUDOR)

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The road transport of dangerous goods may have severe consequences in the event of an accident. The consequences of a road accident involving a heavy vehicle transporting dangerous goods can affect not only the truck driver but also the nearby population. Route selection is a complex issue, influenced by multiple parameters that may vary over the course of a day, a week, or a month. The ultimate objective is to enhance safety through the complete digitalization of the risk management process for the transport of d...

Applied and Environmental Geophysics2026
SWS 2026 Conference Preprints
Publication

INTEGRATED ATEX-BASED RISK ASSESSMENT FOR HYDROGEN STORAGE AND UTILIZATION: METHODOLOGY, RISK MATRIX, AND CASE STUDY

(STEF92 Technology, 2026, Marcel-Daniel Rad, Mihai Magyari, Lucian Moldovan, Dragos Fotau, Diana Salasan)

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Hydrogen is a promising energy carrier for future low-carbon systems, but its high flammability, wide explosion range, and low ignition energy present significant safety challenges. This paper proposes an integrated ATEX-based risk assessment methodology specifically designed for hydrogen storage and utilization systems. The methodology combines regulatory requirements, including EN 1127-1:2019, with a hydrogen-specific risk matrix, ATEX zone classification, and operational risk mitigation measures. A high-pressur...

Oil and Gas Exploration2026
SWS 2026 Conference Preprints
Publication

INTEGRATING EMOTIONAL REGULATION INTO SIMULATION-BASED TRAINING AND CAPACITY BUILDING FOR RESCUE PERSONNEL IN HIGH-RISK ENVIRONMENTS

(STEF92 Technology, 2026, Izabella Kovacs, Artur George Gaman, Daniel Pupazan, Cristian Nicolescu, Andrei Lucian Gireada)

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are usually trained from a technical, procedural and physical point of view. Still, during rescue simulations and competitions, technical training is not the only element involved. Participants work under time pressure, external evaluation, uncertainty and responsibility, and these conditions may generate strong emotional reactions. If these reactions are not regulated, they can affect attention, decision-making, coordination with the team and recovery after the task. The current paper starts from the practical ne...

Education and Accreditation2026
SWS 2026 Conference Preprints
Publication

INTELLIGENT SYSTEM FOR DRILLING MUD DENSITY AND RHEOLOGY CONTROL BASED ON PIEZOELECTRIC ACTUATORS AND SENSORS

(STEF92 Technology, 2026, Samal Muratova, Volodymyr Khomenko, Oleksandr Pashchenko, Abat Zhailiyev, Arailym Zhanggirkhanova)

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Drilling fluid properties – density and rheology (plastic viscosity, yield point, gel strength) – are essential for wellbore stability, pressure control, hole cleaning, and minimizing non-productive time (NPT) in oil and gas drilling. Traditional manual methods (pressurized mud balance, Fann 35 viscometer) are periodic, labor-intensive, and delay corrections, increasing risks of kicks, lost circulation, and instability. This study proposes an intelligent automated system for real-time monitoring and control us...

Oil and Gas Exploration2026
SWS 2026 Conference Preprints
Publication

METHODS FOR EVALUATING MACROTEXTURE AND ITS INFLUENCE ON ROAD SURFACE NOISE

(STEF92 Technology, 2026, Ondrej Machel, Vitezslav Krivanek, Jiri Grosek, Michal Janku)

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In terms of its influence on human health, noise has a significant effect. One type of noise is generated by tire/road contact while a vehicle is in motion. This noise is monitored and analyzed using the CPX (Close-ProXimity) method according to ISO 11819-2, in which microphones are used to measure the noise generated by a rolling reference tire. The level of this type of noise is determined by various factors. One of these factors is the macrotexture of the road surface, that is, the texture of the road surface a...

Air Pollution and Climate Change2026
SWS 2026 Conference Preprints
Publication

MOBILE INTEGRATED TESTING SYSTEM FOR EQUIPMENT WITH PRESSURIZATION P TYPE OF PROTECTION EXPLOSION-PROOF CONSTRUCTION

(STEF92 Technology, 2026, Tiberiu Csaszar, Gabriela Pupazan, Marius Darie, Adriana Andris, Alexandru Beldiman)

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In this paper is presented a Mobile Integrated System for on the Site Testing (MISST) of equipment intended for use in potentially explosive atmospheres, with type of protection pressurization p, resulting from research activities out by the research and testing team involved. The fundamental aspects of the design, implementation and easy use of such an integrated system have been examined, implemented and tested. A mobile integrated test system for Ex p type of protection applied to equipment in Ex construction, ...

Oil and Gas Exploration2026
SWS 2026 Conference Preprints
Publication

MONITORING CROP PHENOLOGY USING HIGH-RESOLUTION SATELLITE IMAGERY: SOFIA REGION, BULGARIA

(STEF92 Technology, 2026, Yana Lipiyska, Tsvetelina Atanasova-Evdenova, Adrian Yordanov)

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Accurate monitoring of crop phenology is essential for yield estimation, growing season modeling, and climate adaptation in agriculture. While freely available satellite archives provide broad spatial coverage, their temporal frequency is often insufficient for capturing the rapid phenological transitions characteristic of crops. This study addresses that gap through a multitemporal analysis of the Normalized Difference Vegetation Index (NDVI) derived from a time series of 119 PlanetScope satellite images at 3 m s...

Photogrammetry and Remote Sensing2026
SWS 2026 Conference Preprints
Publication

MULTI-SENSOR FOREST MONITORING : INTEGRATING SENTINEL-1 SAR AND SENTINEL-2 OPTICAL DATA WITH HEXAGONAL SPATIAL PARTITIONING

(STEF92 Technology, 2026, Oleksandr Trofymchuk, Viacheslav Vyshniakov, Viktoriia Klymenko, Natalia Sheviakina)

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This paper presents an extended multi-sensor geoinformation framework for monitoring forest ecosystems in Ukraine under conditions restricted field access. Building upon previously validated hexagonal GIS and NDVI-based remote sensing methodology applied to Zhytomyr Oblast (2021–2024), the current study incorporates an expanded Sentinel-2 time series through 2025 and introduces a theoretical framework for integrating Sentinel-1 Synthetic Aperture Radar (SAR) data to overcome the critical limitation of optical cl...

Geoinformatics2026
SWS 2026 Conference Preprints
Publication

MULTI-SOURCE GEOMATIC DATA FUSION FOR WETLAND MONITORING: A CASE STUDY OF THE MARAMURES MOUNTAINS NATURAL PARK

(STEF92 Technology, 2026, Adrian Traian Radulescu, Gheorghe Radulescu, Sanda Marioara Nas, Dorel Gusat, Corina Michaela Radulescu)

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This research addresses the design, integration, and validation of a complex methodology for wetland monitoring, using as case studies two peat bogs located in the Maramures Mountains Natural Park, Romania. The study is part of a larger research effort concerning the assessment of the current ecological status of internationally important wetlands in the trans-Carpathian region of Romania, Ukraine, and Slovakia, through the development of an integrated monitoring system based on advanced geomatic technologies. Thi...

Photogrammetry and Remote Sensing2026
SWS 2026 Conference Preprints
Publication

NATURAL ZEOLITES AS AMENDMENTS FOR ENHACING SOIL RESILIENCE

(STEF92 Technology, 2026, Maria-Bianca Aiordachioaie, Teodora Alexandra Zotica, Daniel Agapie, Irina Volf)

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Soil resilience is known as the ability to resist and recover from exposure to contaminants, climate change, erosion, anthropogenic activities and intensive use of resources, in order to maintain vital processes such as nutrient cycling, water retention, and structural stability. To remediate the affected soils, several integrated strategies, including bioremediation, hydrological management and the use of amendments can be applied. The usage of natural amendments represents a sustainable path for improving soil p...

Soils2026
Showing 1-50 of 2006 records