TITLE
COMPARISON OF THE EFFICIENCY OF BALTIC INVESTMENT FUNDS

AUTHOR(S)
Rima Tamošiūnienė, Katažyna Sucharevska

ABSTRACT
In order to invest in suitable funds, it is necessary to evaluate and compare the activities of different investment funds whose units are traded on the different stock exchanges. In order to achieve a better result, it is useful to evaluate and compare several similar countries located in a similar geographical, demographic, social and economic space. Therefore, investment funds operating in the Baltic States were selected for the study, selecting funds that prevail on the stock exchanges of the Baltic States (stock funds, bond funds, funds of funds). The purpose of the study is to analyze the effectiveness and riskiness of the most common investment funds in the Baltic countries, in order to provide a potential investor with the reasonable information about investment
opportunities in the Baltic stock exchanges. To achieve the goal, a systematic and comparative analysis of scientific literature, analysis and synthesis of statistical data, summarization, calculation, evaluation, comparison of performance indicators of investment funds are emphasized.

DOI
www.doi.org/10.70456/WHGS7939

PAGES
196-202

DOWNLOAD
https://unitechsp.tugab.bg/images/2023/6-SHP/s11_p130_v1.pdf

How to cite this article:
Rima Tamošiūnienė, Katažyna Sucharevska, COMPARISON OF THE EFFICIENCY OF BALTIC INVESTMENT FUNDS, UNITECH – SELECTED PAPERS - 2024, 196-202

TITLE
A STUDY OF DEPTH INACCURACY IN TIME-OF-FLIGHT (TOF) CAMERAS CAUSED BY COLOR VARIATIONS OF OBJECTS

AUTHOR(S)
Alexandar Lyubenov, Stefan Ivanov

ABSTRACT
Time-of-Flight (ToF) cameras represent 3D imaging sensors capable of providing both depth and amplitude images at a high frame rate. The rapid evolution of this technology in recent years has been noteworthy. However, the effectiveness of ToF cameras is contingent upon imaging conditions and external factors,
rendering the captured data susceptible to inaccuracies. This study delves into the impact of color and distance on the depth accuracy of ToF cameras. Our experiments unveiled the diverse effects of color and distance on the depth inaccuracies inherent in ToF cameras. Nevertheless, due to the varied nature of these faults, a unified description is unattainable. Addressing these inaccuracies necessitates a robust foundation of experimental data, which is the primary objective of this research. The findings will serve as a crucial resource for future algorithms aimed at rectifying these anomalies.

DOI
www.doi.org/10.70456/GQAS9575

PAGES
180-186

DOWNLOAD
hhttps://unitechsp.tugab.bg/images/2023/5-AIUT/s6_p105_v3.pdf

How to cite this article:
Alexandar Lyubenov, Stefan Ivanov, A STUDY OF DEPTH INACCURACY IN TIME-OF-FLIGHT (TOF) CAMERAS CAUSED BY COLOR VARIATIONS OF OBJECTS, UNITECH – SELECTED PAPERS - 2024, 180-186

TITLE
THEORETICAL ASPECTS OF ASSESSING THE INVESTMENT ATTRACTIVENESS OF SOCIALLY RESPONSIBLE COMPANIES

AUTHOR(S)
Rima Tamošiūnienė

ABSTRACT
In the modern business environment, socially responsible business becomes a significant business management tool that allows strengthening the company's competitiveness, so more and more business companies include aspects of social responsibility in their activities. The article analyzes the ways and possibilities of assessing the investment attractiveness of socially responsible companies. The research problem is the inclusion of the social responsibility assessment of companies in the assessment of their investment attractiveness. The purpose of the study is to theoretically substantiate the peculiarities of the assessment of the investment attractiveness of socially responsible companies.

DOI
www.doi.org/10.70456/BHZA6835

PAGES
189-195

DOWNLOAD
https://unitechsp.tugab.bg/images/2023/6-SHP/s11_p98_v2.pdf

How to cite this article:
Rima Tamošiūnienė, THEORETICAL ASPECTS OF ASSESSING THE INVESTMENT ATTRACTIVENESS OF SOCIALLY RESPONSIBLE COMPANIES, UNITECH – SELECTED PAPERS - 2024, 189-195

TITLE
EXPERIMENTAL INVESTIGATION OF THE EFFECT OF SURFACE CONTAMINATION ON POWER OUTPUT IN PHOTOVOLTAIC PANELS

AUTHOR(S)
İlhan UMUT

ABSTRACT
It is known that as the demand for energy increases, fossil resources are decreasing day by day and current electricity prices are increasing. For this reason, renewable energy installations are gaining importance day by day. On the other hand, interest in electricity generation from wind and solar, among renewable energies, is also increasing. However, the fact that solar radiation does not remain constant during the day and that the
intensity of solar radiation varies according to seasons negatively affects electricity production. To benefit from solar energy with maximum efficiency, operating conditions in photovoltaic panel conversion systems must be correct. An important reason for the decrease in conversion efficiency in solar panels is the effect of dust and pollution on the surfaces of photovoltaic cells. In this study, The effect of photovoltaic panel cell surface pollution on electricity production was examined experimentally in a solar energy conversion system established on the campus of Trakya University Faculty of Engineering. After the installation was completed, only one of the photovoltaic panels was cleaned regularly with glass cleaner every Monday. Data was received and recorded through the system for 3 months. Based on the results of the study, it was observed that the photovoltaic panel that was cleaned only once a week produced approximately 4% more electrical energy after 3 months than the one that was not cleaned.

DOI
www.doi.org/10.70456/RKUC7367

PAGES
175-179

DOWNLOAD
https://unitechsp.tugab.bg/images/2023/5-AIUT/s6_p102_v1.pdf

How to cite this article:
İlhan UMUT, EXPERIMENTAL INVESTIGATION OF THE EFFECT OF SURFACE CONTAMINATION ON POWER OUTPUT IN PHOTOVOLTAIC PANELS, UNITECH – SELECTED PAPERS - 2024, 175-179