Urban planning is a dynamic and complex field aimed at the organized and sustainable development of cities and urban areas. This involves the efficient management of natural, economic, and social resources while ensuring a controlled and harmonious growth of infrastructure. The recent development of advanced technologies has had a significant impact on the way cities are planned, systematized, and developed. Among the most promising technologies that have revolutionized urban planning are UAVs (unmanned aerial vehicles), photogrammetric processing techniques, 3D scanning and modeling methods, and GIS systems (geographic information systems). UAVs, due to their ability to collect accurate data from height, have become an essential tool for obtaining images and information for urban analysis. After photogrammetric processing or 3D modeling and integration of digital results into GIS systems, simulations and analyses can be performed to support decision-making in urban development. This article aims to explore in detail the possibilities of using UAVs, photogrammetric and 3D modeling methods, and GIS systems in urban planning, highlighting their advantages, applications, and challenges.

The analysis of the impact of the organic and mineral fertilization systems on the production and sustainability of the temporary grasslands in Romania represents a decisive step in establishing the optimal management in such a technology. The purpose of this research is to determine the influence of these two types of fertilization on hay production, floristic structure, chemical composition–nutritional quality, economic efficiency, and sustainability, in order to improve the cultural technology. The study was carried out in the area of Horezu, Romania. A mixture of five fodder plants was used in the study—Dactylis glomerata, Phleum pratense, Festuca pratensis, Lolium perenne, and Lotus corniculatus—which were sown in two fertilization systems: mineral and organic. The research was carried out between 2017 and 2020, very different years from a climatic point of view. The year 2017 was used to establish the autumn experience, so it is incomplete and was not used in the interpretation of the obtained results. The results of our research contribute to the implementation of better technology for the cultivation of temporary grasslands because the statistical interpretation established that they are significant for all the objectives pursued: production, floristic and chemical composition, and economic efficiency. We recommend small farmers reconsider the use of an organic fertilization system, as they can achieve maximum efficiency, improvement of all physical and chemical properties of the soil, and reduction of feed contamination.

The mining industry is the branch that provides necessary mineral raw materials for a whole series of economic activities, with the main beneficiaries being the energy industry (through coal consumers), companies specialized in the processing of uranium concentrates, chemical industry, food industry, construction materials industry, non-ferrous metallurgical industry, etc. Thus, in accordance with the Romanian mining industry strategy 2017-2035, one of the objectives of the industrial policy in the mining field in Romania is the development and implementation of a database system for the mining sector. Specifically, the goal consists in a development of a tool for tracking and implementing the Mining Law, which allows the collection, storage, administration, modification and analysis of data regarding licenses and permits. At the same time, the development of a visualization and geographic information system (GIS) of mining exploration and exploitation perimeters, as support for the promotion of concessions for mineral resources, is being pursued. In this way, there is a tendency towards the automated and computerized management of the production processes. The development of such systems with practical applicability requires the design, development, and implementation of specific models and databases. The structure and quality of the designed data models directly influence the exploitability and analytical capability of the systems. This paper analyzes the possibilities of designing and implementing a database for the management of the surface mining activities. In the first part of the paper, the basic principles regarding the design and population of databases are presented, as well as their correlation with user requirements and exploitation needs. In the second part, a data model was proposed for the management of mining activities, in accordance with the main stages in the life cycle of a mining operation. In the end, several scenarios for the exploitation of GIS databases were presented, as well as their interconnection with data sources external to the system.

The research addresses an original and complex topic concerning the evolution of the main chemical properties of the chromic luvisols in the southwestern part of Romania, in Dolj County, exploited under the specific cultivation conditions of agritourist farms. The novelty of this research consists in the multidisciplinary interpretation of the analyses on chemical properties and their influence on the quality and quantity of agricultural productions. In the second part, the main chemical properties of the chromic luvisols were analysed, both for the soil developed under woody vegetation, and both for the cultivated soils. Comparing the results of the analyses, we found that the natural fertility of the cultivated soil decreased considerably, which led to a significant deterioration of the main chemical properties, precisely due to cultivation. In the third part, a study was carried out on the presence and concentration of heavy metals in this type of soil, finding from the interpretation of the analyses that the values of all the studied elements fall below the alert threshold. he recommendation on the researched aspects is that in order to limit the degradation and even improve the main chemical properties of chromic luvisols, in the agritourism farms, an ecological agriculture must be practiced.