Applied Scientific Research

Designing a tool/platform for developing expert systems

Donatas Daugirdas, Karolis Paliliūnas — Sat, 13 Jan 2024 00:00:00 +0200

The article analyzes the company's need to create a prototype for the development of expert systems. Expert systems and tools for their creation were examined, functions and software for the creation of an expert system that met the needs of the company were determined. The expert system design and programming processes, system performance testing and system documentation preparation, installation of the system on the server are described.

Modelling of vehicle noise dispersion in a planned construction site

Loreta Kelpšienė, Dalia Kulikauskienė — Fri, 16 Feb 2024 00:00:00 +0200

The article analyses the options for the layout of the planned residential building on the site, assessing the acoustic level of the environment. The analysis is important because the area is next to a busy street and a railway line, and the building is intended to be used for the permanent residence of people with special needs. In the initial version of the model, the location of the building on the site is chosen 7 m from the street boundary. Due to the results of the model analysis – the sound pressure to the facades in 41% of the area exceeds the permissible values, to the roof – 30 %, to the ground – 24 % – the position of the building was adjusted, placing it another 9 m away from the street, and vegetation was inserted, a ditch filled with peat 0.9 m of depth in the ground is recommended at the south-western border of the plot.

Thermographic analysis of the thermal insulation of the heat transfer regulation unit of the ventilation system

Edita Mockienė, Deividas Nesovas, Viktorija Valaitytė — Fri, 16 Feb 2024 00:00:00 +0200

The article analyses the thermal insulation characteristics of the recuperator heat transfer unit of the ventilation system of the public building. The results of the thermographic study showed the temperature distribution on the surface of the system elements. Heat losses are calculated by comparing the temperature of the "hottest" places with the temperature of the "coldest" places in the environment. The research was carried out in late autumn when the outdoor temperature fluctuated between +4 and −2 degrees. It is likely that the heat loss would be significantly higher during the coldest five-day period of winter.

Thermographic Examination of the Thermal Insulation Condition of the Heating Point during Exploitation

Gintautas Austynas, Laima Ignatavičienė, Deividas Nesovas — Sat, 17 Feb 2024 00:00:00 +0200

Promoting technological progress is a necessary measure to reducing the energy consumption of buildings and contributing to sustainable energy. It is important, not only to efficiently use heat in the building, but also to reduce energy losses in heat supply networks and heating point. Thermography allows for a more accurate assessment of the state of thermal insulation and can help identify and determine small but important areas of heat loss. The expected effect of additional thermal insulation could be up to 1 % of saved heat energy. However, considering the relatively high temperatures of non-insulated elements and long heating seasons (duration varies up to around 200 days), an economic effect can also be expected.

Contextualization of the social business content of social service institutions

Gabrielė Radavičiūtė, Aristida Čepienė — Sat, 17 Feb 2024 00:00:00 +0200

Social business is defined as a business focused on the well-being of people and communities. Creative activity and social innovation prevail in such a business. It constantly updates services, products and processes that are necessary for improving the social well-being of the individual and the community. Social business is usually carried out by non-governmental organizations. The purpose of this article is to find out the context of social business content of social service institutions. 4 social workers working in an institution with persons with disabilities participated in the study. Qualitative content analysis revealed the perception of social business as a process, it is interpreted as promoting the integration of clients into the community, an activity that has added value for social workers and their clients. The components of social business, mission, community, profit, innovation, market are significant in its implementation.

Optimization of lubricating oil change intervals for marine internal combustion engines: algorithm research and design

Justas Žaglinskis, Laurynas Jagėla — Sat, 17 Feb 2024 00:00:00 +0200

This study investigates an algorithm for optimal oil change intervals in the marine engine fleet, which reduces the costs due to the recommendations of ship engine manufacturers, which may have a large margin of error. At the same time, the algorithm provides measures to avoid exceeding the limits of sustainable operation of the installation. The main objective of the algorithm is to reasonably extend the service life of the lubricating oil in accordance with the recommendations of the engine manufacturers and while maintaining a reminiscent operating condition of the machinery. The variation of lubricating oil quality parameters during engine operation is a very important factor which, if ignored, can lead to high costs associated with ship idling. The obtained theoretical algorithm can be applied in the optimization process, but it is necessary to check and compare it with the results of the laboratory experiments and, if necessary, make corrections to the algorithm. These published results of the algorithm research and design are the first phase of the optimization of the lubrication oil change intervals for marine internal combustion engines, which must be verified by the results of applied research, mathematical analysis and, if necessary, adjusted as needed.

Artificial intelligence in the public sector: progress versus regress?

Viktorija Girinskienė — Sat, 24 Feb 2024 00:00:00 +0200

AI is analysed from different perspectives, one of which is the application of AI in the public sector. The development of the AI requires a responsible approach, including ethical guidelines, regulation, and continuous public education. It is important to strike a balance between promoting innovation and minimising potential negative consequences. There is also a need to promote technology development in a way that benefits society as a whole and not just certain groups. It is becoming a common tool in education. Already, AI is changing the way schools, universities, students, and educators work and children learn. Educational institutions benefit from it by helping teachers meet the specific needs of each learner. There is a strong push for closer cooperation on digital education at European Union level and the importance of collaboration across all sectors to make education fit for the digital age. The article provides a general overview of artificial intelligence, its impact on society, how it can be applied in the public sector, whether humans are already able to exploit and benefit from this technology, and how to guard against the negative effects of technology. What legal measures need to be taken to ensure that artificial intelligence is a progress for mankind and not a regression in any field.

Valuable social capital: arguments supporting the need for the pastoral care profession

Dalia Rudytė — Sun, 17 Mar 2024 00:00:00 +0200

The article investigates pastoral care as a catalyst in shaping professional practice, elucidating its various realms and operational facets pertinent to the demand for spiritual guidance. As societal dynamics evolve, the imperative for pastoral intervention amplifies, paralleling the continuous expansion of demographics seeking spiritual solace. Particularly salient among the challenges confronting clients and their kin are issues surrounding aging, profound and incurable illnesses, bereavement, societal alienation, and addiction. The profession of pastoral care is portrayed as a distinctive vocation founded upon invaluable social resources, fostering cohesion among individuals sharing congruent values while fortifying interpersonal trust.

Analysis of wage dynamics in a public education institution

Birutė Balčytienė — Thu, 28 Mar 2024 00:00:00 +0200

The article investigates the essence, structure of wages, the system of taxation of income received from employment relations. Wage changes for 2015–2024 have been carried out. In a public educational institution, the analysis reveals trends in the salary of academic employees. In 2015 January 1st in Lithuania, instead of the national currency litas, the euro was introduced as the common European currency, a decade full of changes, based on regulated changes. Although the regulation of labor payment in the Republic of Lithuania is assessed ambiguously due to the abundance of laws and other normative acts and their frequent changes, a regulated, moderate, albeit unclear, increase in wages has been identified. Determining the value of an academic employee's work is variable and sensitive, in the absence of a more detailed and reasoned justification of official coefficients. The results of the analysis allow us to make the assumption that when forecasting and strategizing the support of employees' motivation for scientific activities, it is appropriate to adjust job coefficients while maintaining equal gaps between positions.