International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Nowadays advancing world of technology, mobile applications are rapidly growing segment of global mobile market. The proposed application aims to support self-learning of students, but also to facilitate the learning process, by offering a teaching panel where courses can be created and lectures can be added to them. The application was designed using the Android Studio programming environment and was written in the Java programming language. It is fully dynamic, as all information entered by the user being stored in a database.

This paper discusses key challenges and methods in computer forensics and presents a comparative analysis of forensic software tools FTK, Autopsy, The Sleuth Kit TSK, TestDisk and Foremost. The instruments considered in the study are applied in different case studies to collect, analyze and preserve digital evidence available for computer forensics, cybersecurity and cloud-based investigations. The research discusses their effectiveness and limitations in handling cloud-based evidence collection.

Water is always in constant demand due to the diversity of its uses, which requires monitoring its quality to ensure that it is fit for human consumption. Routine water quality monitoring is often carried out in traditional laboratories, but this is time-consuming, expensive, and it may involve some elements of uncertainty. Therefore, the purpose of our work is to study the possibility of introducing an Arduinobased sensor system for monitoring the water quality of the Oghaskura River. To that end, we created a simple prototype consisting of a microcontroller and several connected sensors, which was used to provide field testing each week at several time intervals.

Ultimately, digitizing cultural heritage is not just about preservation; it is about enriching the cultural narrative, making it inclusive, and ensuring that knowledge and appreciation of our shared history are passed down to future generations. Digitization involves advanced techniques such as 3D scanning, high-resolution photography, and digital modeling. These technologies help create accurate and detailed representations of cultural assets, ensuring that the digital versions retain the original’s integrity and details. Ensuring high reliability for small-sized objects is a crucial challenge in digitizing cultural heritage sites, especially when dealing with objects that lack movement, transporting, low ambient light conditions, reflective material, etc. By incorporating three-dimensional models into the research and dissemination process, cultural heritage institutions can make their work more appealing and accessible to a wider audience, fostering greater appreciation and understanding of our shared cultural heritage.

One of the biggest challenges of our century is climate change. The aviation industry is a major contributor to global carbon emissions, and airports are responsible for a significant portion of this impact. To reduce the carbon footprint of airports, it is necessary to implement energy efficiency measures that can help reduce energy consumption and greenhouse gas emissions. This study analyzes the impact of the use of photovoltaic panels (PV) and the replacement of boiler burners with oil, on energy efficiency and the reduction of carbon emissions at the airport of Tirana. The electricity produced by these panels is used to power airport buildings, lighting systems and other infrastructure, reducing the need for traditional energy sources.
The reviewed period covers the year 2023, because during this year important investments were made with the installation of photovoltaic panels and the replacement of oil boiler burners with LPG burner, in addition to the improvement of the lighting system and the replacement of diesel vehicles with electric vehicles. Energy consumption data is used to calculate the carbon footprint and key energy performance indicators. The results showed that the use of photovoltaic panels and the change of burners of oil boilers brought a significant reduction of the carbon footprint and a significant economic benefit.

Over the past four decades, the field of medical robotics has achieved remarkable advancements, revolutionizing various medical disciplines. The widespread adoption of robotic platforms across various medical disciplines has been remarkable. Currently, these devices play a crucial role in performing minimally invasive surgical procedures with enhanced precision, resulting in reduced hospitalization and increased safety for physicians. Beyond surgical applications, medical robots are increasingly proving their worth in performing routine tasks, thereby enabling less invasive and more informative diagnostic and therapeutic procedures. Furthermore, the integration of artificial intelligence (AI) holds great promise for developing new systems with higher autonomy levels and improving existing ones. This paper describes a short view on history of the development of robotics from the beginning to the current state along with a brief outline of the future direction of development of medical robotics. At first describes the process of development from the first medical robotic device prototype to the modern minimally invasive surgical devices currently used in medical practice. Then it presents expansion of robotics into other medical fields, including ophthalmology, gastroenterology, cardiology and cardiac surgery, physiotherapy, or radiology. Finally, it describes some perspectives for future development in medical robotics, as well as the obstacles, that need to be overcome to improve the efficiency and level of autonomy, in the systems.

Japanese has various kinds of fillers. Their functions include not only hesitation but also marking the softening of utterances and indicating breaks between utterances. This study analyzes native Japanese, Chinese, Korean and Vietnamese speaker brain’s cerebral blood flow related to fillers by using fNIRS (functional near-infrared spectroscopy). Additionally, we seek to explore the relationship between fillers and politeness of utterances by analyzing the sounds of fillers. We conclude fillers are connected to the increase of cerebral blood flow and filler’s kinds, pitch, length and strength are influenced to politeness.

Electronic voting (e-voting) offers many advantages compared to traditional types of voting. Today there are many e-voting schemes and systems, which allow their use for various purposes. Because of its fundamental importance for democratic societies, e-voting is subject to high legal standards, in particular security requirements for the voting method. It is hard to create a system or a protocol fulfilling all security requirements. Designing effective e-voting systems is challenging because these aspects often conflict with each other. For example, one of such challenges is trying to ensure identification and keep votes private while still being able to verify them. There are quite a few cryptographic schemes which fulfill wide requirements for electronic elections, but they use sophisticated cryptographic tools that make them hard to implement and require expertise in various fields. In this paper we suggest a new approach that ensures this requirements without complex cryptographic methods, using only face recognition, properties of entropy, hash functions and steganography.

The human development index (HDI) is a statistical composite index for assessing the human development (HD) of a country or region of the world. For 2021, HDI was analyzed for 191 countries of the world (HDR report that was published in 2022). The maximum value of HDI=0.962 was the country of Switzerland, and the minimum value of HDI=0.3385 was the country of South Sudan. The mean value of HDI for all countries of the world in 2021 was AM=0.732. The paper contains an analysis of data of the human development index (HDI) in Georgia with local regions for the period 2000-2021. Based on the HDI index, Georgia was ranked in the Q2 quartile for the period 2000-2021, with CGI=114.25 [%] per year in 2021 compared to 2000 and average annual growth rate (AAGR)=0.74 [%]. The capital Tbilisi had the highest values of the SHDI index in Georgia for the period 2000-2021, so for the regions Adjara, Imereti Racha-Lochkhumi Kv, etc., while the region Mtskheta-Mtianeti has the lowest values of the SHDI index.

Achieving information security in the organization is related to the implementation of certain standard security procedures. The set of methods and tools for information security and communication and information systems (CIS) are the tools for implementing these procedures. The subject of the research is the subsystem for limiting and regulating access to information and communication and information systems, which is necessary for the analysis and simulation modelling of the interaction of national security systems in crisis situations related to cybersecurity and cyber defence.

The main goal of the system is for the students enrolled in it to receive additional exercises to help them learn material in various disciplines. In this way, they will have the opportunity for better preparation and will get better results in the discipline s that are taught to them. Through the knowledge sharing system, advanced students who wish to share their knowledge of a subject will be able to register an exercise to lead on days that are convenient for them. This exercise takes place in a system -specified free room at a school/university. Each student has the opportunity to sign up for a given exercise. When recording, the exercise leader can monitor how many student s will attend. The system is managed through administrator accounts. Through them, the events in the system are trac ked, and if necessary, the cold and exercise data can be added, changed and deleted.

The application of old climate data in the design of buildings and transport infrastructure that will be used in the future is problematic because of climate change. On the other hand, it is currently unknown what the success of human actions to limit them will be. This leads to some uncertainty about the exact parameters of the climate until the year 2100. This requires a new approach to design and construction in the context of climate change. The article examines the impact of RCP (Representative Concentration Pathway) climate scenarios and regional climate models based on them, on design and construction for energy efficiency and sustainability. The significance of different RCP scenarios and the need for spatiotemporal scaling of climate data are discussed. The disadvantages of using a static representative climatic year (as it is in the Bulgarian regulatory documents for energy efficiency) are analyzed compared to its dynamic and adaptive variant.