A technology, conceptual design for a three-module system for conducting plant protection in greenhouses has been developed. An experimental model of a three-module system for conducting plant protection in greenhouses has been developed.
Locus of control is a construct used to explore and analyze individual’s personality traits in various environments. It is related to how people perceive responsibility for events in their lives and in а professional context. The present study investigates the manifestation and distribution of internal and external locus of control among technicians and engineers employed in a private company specializing in the repair and maintenance of gaming equipment. Locus of control, conceptualized as a stable psychological orientation reflecting individuals’ beliefs about the degree to which they can influence outcomes in their professional environment, is a key determinant of work behavior, motivation, and organizational adaptability. Using a structured survey based on a validated psychological scale, data were collected from employees occupying various technical and engineering positions. The results demonstrate a prevailing tendency toward an internal locus of control, suggesting that most participants perceive work-related outcomes as contingent on their own skills, efforts, and decisions. Statistical analysis reveals that a stronger internal orientation is positively associated with heightened personal responsibility, proactive problemsolving, and greater commitment to assigned tasks. Conversely, respondents with a more external locus of control report lower levels of autonomy and a higher reliance on external factors such as luck, organizational constraints, or management decisions. The findings underscore the importance of locus of control as a psychological resource that contributes to employee effectiveness, motivation, and resilience in dynamic technical work environments. The study highlights the practical implications for human resource management, including the potential benefits of fostering internal control orientations through targeted training, supportive leadership practices, and organizational policies aimed at enhancing employee empowerment.
A study was conducted to determine the irrigation regime and its impact on the yield of three genotypes of greenhouse tomatoes in 2022 at the experimental field of MVCRI – Plovdiv in an unheated steel-glass greenhouse of the Venlo type. The experiment was conducted in three irrigation regimes:
Optimal 100%M, reduced by 25% and increased by 25%, using water-saving technology.
The size of the irrigation norms, the number of irrigations for the growing season and their distribution by development phases for the soil and climatic conditions of the Plovdiv region were determined.
The obtained results for irrigation of greenhouse tomatoes show that 18 irrigations were implemented during the growing season in order to maintain soil moisture between 85-100% of the maximum field moisture capacity for the conditions of Plovdiv from the beginning of May to the end of July.
The size of the irrigation rates by regimes varies from 14.9 to 24.7 mm, and the irrigation rates – from 268 to 447 mm. The maximum irrigation rates during the period with the most significant water consumption can be applied after 3-4 days and satisfy the needs of the plants. The analyzed results of the yields obtained from the three tomato genotypes at different irrigation rates show that the highest total yield of greenhouse tomatoes is formed in the variant with 125% implementation of the irrigation rate, followed by the variant with 100% irrigation rate, and the lowest, in the variant with 25% reduction in the irrigation rate.
Obtaining a good effect from irrigation and the most productive use of irrigation water is possible only when applying an optimal irrigation regime, consistent with the requirements of the crops grown.
A number of studies have been conducted in our country on the limiting factor – water. Their main goal is to establish the best efficiency of applying different irrigation regimes for irrigation under optimal and insufficient water supply. (Kireva et al 2020)
The best results in terms of water use in this crop are obtained when the soil moisture is above 85% of the WHC and is applied to water-saving irrigation techniques. This method fully meets the requirements for sustainable agriculture and ecological fruit production, including ensuring high yields and quality of production, reducing unwanted side effects. (Bucks et al.,1982; Kireva ,2020.)
The results obtained by (Mukherjee, S., et al. 2023) show that physiological characteristics, yield and water productivity are significantly influenced by the irrigation system and soil moisture regime, with drip irrigation improving the average yield of tomatoes by 25%.
It was found that reducing the optimal rate (100% M) with a water stress of 50% (50%M), a significant decrease in yield (13.16%) was observed in greenhouse tomatoes (Wu et al. 2022 ; Lu et al. 2019 ). Alternatively, Wu et al. ( 2022 ) stated that under optimal irrigation conditions, tomato plants produced more fruits than those grown under deficit irrigation.
With the studies of the mutual influence of different irrigation regimes on the yield of tomatoes grown in a polyethylene unheated greenhouse, it was found that the impact of irrigation on yield has a greater effect at higher levels of irrigation rate, (Stoyanova A. et al.,2020; Stoyanova A. et al. 2019).
Studies of the irrigation regime and its influence on the yields of tomatoes grown in plastic greenhouses using drip irrigation are quite scarce, and the studies carried out in our country are for the conditions of the Sofia Field (Aboamera M. 1992; Kireva,; Kireva R.,2020) and for St. Zagora (Stoyanova An. et al. , 2020), which cannot be indicative of other agro-climatic regions of the country, which are characterized by different soil and meteorological conditions. Given the above, it is evident that research is needed to establish the complex influence of the irrigation regime on the quantity and quality of the yield of tomatoes grown in glass unheated greenhouses for the soil and climatic conditions of a region with developed vegetable production, such as Plovdiv. This will be achieved by using principal component analysis to assess the effects of tomato quality and the efficiency of water use and fertilization.
Study objective – determining the irrigation regime and its influence on the yields of greenhouse tomatoes for the region of the city of Plovdiv
The article reviews and evaluates the factors affecting the revenue management system in hotel facilities. Based on the statistical data of the State Statistical Committee of the Republic of Azerbaijan for 2005-2023, it is determined here that at the current stage of the digital economy in the globalized world economic system, the service sector is one of the fastest growing sectors compared to other sectors of the economy and responds faster to the socio-economic processes taking place globally. The article reviewed the one-time capacity, room stock, revenue from the sale of rooms and total revenue of hotel facilities of the Republic of Azerbaijan for 2006-2023, and calculated the RevPaR indicator, which expresses the efficiency of their services, for these years. The study also conducted a correlation and regression analysis between the RevPAR indicator and revenue from the sale of rooms of hotel facilities in the Republic of Azerbaijan, and determined the extent to which an increase in revenue from the sale of rooms increases the RevPAR indicator of hotel facilities.
The usage of alternative fuels that reduce the emission of harmful components, but do not eliminate their presence (especially nitrogen oxides) will be analyzed in the article. researchers prove that operation process of diesel on standard fuel is characterized by the formation of nitrogen oxides during the combustion of a heterogeneous mixture of diesel fuel and air in those local zones, in which the composition of the mixture is close to the stoichiometric mixture. According to this, an actual problem today is to develop the method of perfect combustion process for diesels, when during the diesel operation the local values of air excess coefficient αi and temperature Ti will not be in the range in which nitrogen oxides and soot are formed. So, converting a diesel engine into gaseous fuel ensures a reduction of toxicity and smokiness in exhaust gases and from this point of view, the values of the air excess coefficient will be considered in accordance with the mode of diesel operation and possibility of using various types of impurities to improve fuel properties and, as a result of their consumption, to improve both, ecological and efficient indicators.
The paper presents a methodology focused on digital entrepreneurship education for bachelor students in economic specialties. The conceptual framework is to present on the one hand a useful model for students who plan to create their own business, and on the other – to focus on the collaboration between academic lecturers and business representatives to combine efforts in teaching that provides practical-applied results and stimulates entrepreneurship initiatives. In this regard, the paper aims to give a foundation for future entrepreneurs to apply key instruments for business digitalization. Based on this educational unit, it is possible for the students to implement a specific technic that will increase their digital competitiveness. The application of the listed tasks in the process of business idea development can be beneficial for students to create start-ups that overcome threats from the external environment and the continuous confrontation with new crisis situations.
In the development of new composite structural elements based on sedimentary rocks (clays) as inorganic binders and foam composite materials, their physical characteristics are presented for the construction of recipe compositions and the determination of their complex new properties. The role of the components of the compositions, together with organic reinforcing fiber materials such as straw, rice husks and others, basic parameters of the technological regime and other factors for ensuring adequate workability of the prepared composite compositions for obtaining building coatings and elements – bricks and panels for building ecological houses – is considered. The determination of the necessary technological characteristics of the composite mixtures ensures their effectiveness.
The aim of the project is to develop a sophisticated production process management system tailored for electric guitar manufacturing. This system will utilize various subsystems to continuously gather data on product quality, semi-finished products, work performance, resource usage and employee status. The system will automatically suggest modifications to the production process, enabling real-time optimization. The project plans to primarily employ non-contact measurement methods, which will be processed in real time and feedback into the production process optimisation.
The article examines the modern processes of development of passenger water transport in the context of the global transport system, and tracks patterns and trends in the development of port infrastructure and cruise shipbuilding in recent years. Environmental problems of various nature arising from the intensive development of cruise shipping, as well as ways to solve them, are
analyzed.
Nowadays there are millions of people who use the internet and each of them is a potential customer for a company that offers online sales. Due to the rapid development of technology, companies that are interested in selling their products through the use of the internet will have to constantly seek for a competitive advantage in this fierce competition. E-commerce is emerging as a new way to help businesses increase competitiveness and thus contribute to the country’s economic success. The COVID-19 situation made people live differently, buy differently and think differently. During the period of total quarantine of individuals but also of shops, online trading was seen as a necessity by companies. The internet is a good way to get new requests from consumers. This is why it is important for online retailers. During the COVID-19 period, companies needed to manage change, finding new ways to be close to customers through online sales, but also designing new ways of working. The purpose of this article is to identify the management of changes by Albanian companies in the use of technology as well as e-commerce during and after the COVID -19 period.
Albania has significant renewable energy resource potential from hydro, wind and solar energy. It is a special case regarding electricity generation because most of (99%) is provided using large and medium hydro power plants. So, energy generation in Albania is free from greenhouse gas emissions. But since hydrological conditions change from year to year, the country has been forced to support the import of electricity from countries in the region and mainly from Kosovo. The use of wind energy in Albania would not only reduce dependence on imports but also would affect the decarbonization of the energy sector in the region, which is supported by fossil resources. This study estimates the amount of CO2 that could be reduced if a renewable energy source, such as wind energy, would replace energy generation from the use of fossil fuels sources. In case when the energy is generated from coal thermal power plants in Kosovo, emitting an average of 1,205 tCO2/MWh, results in reduction of 36,632.5 tCO2 for generating 30.6 GWh electricity yearly and in case when electricity generation is from Vlora gas power plant, emitting an average of 0.341 tCO2/MWh results in reduction of 10,379.3 tCO2 for the same amount of electricity generated in first case.
In recent years, 3D printing has gradually appeared in people’s field of vision. The addition of wood in thermoplastics improve their some mechanical properties such as tensile and bending modulus without affecting its biodegradability. The decrease in the cost of filaments may enlarge the utilization of biodegradable filaments after the disposal in near future. Smallscale elements used in furniture production, such as connector fittings or fasteners for shelves, may give functional and structural
properties without significant investment. 3D-printed connections are suitable when the the production complex shaped connectors and quick disassembly are required, to reduce the product’s weight and price