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Purpose. This article aims to provide an in-depth examination of the digital health system of Ukraine, focusing on the emerging trends, precise definitions, established standards, and recent legislative revisions that shape the practice and implementation of eHealth solutions within the country. Background. The digital health landscape in Ukraine has witnessed significant transformations, especially in the wake of the COVID-19 pandemic and subsequent military conflicts. These events have catalyzed the expansion of telemedicine services, leading to innovative approaches in healthcare delivery. The national strategy underscores the necessity for human-centric and accessible telemedicine, reinforced by technological neutrality, and harmonization with global standards. Methods. A review of the current literature, national strategies, and legal documents was conducted, alongside an analysis of data usage and service provision patterns in various Ukrainian regions. Participation in the \"Science for Safety and Sustainable Development of Ukraine\" competition facilitated project initiatives like the development of a cloud-based platform for patient-centered telerehabilitation for oncology patients. Findings. The utilization of telemedicine has significantly increased in conflict-affected regions, demonstrating the need for, and the effective deployment of, digital health strategies under crisis conditions. Private health facilities and entrepreneurs have been pivotal in the provision of telemedicine services. Legislative efforts have been geared toward framing telemedicine as an integral component of the national eHealth system, ensuring interoperability, and aligning with international standards and the Internet of Medical Things (IoMT). Interpretation. The findings underscore the resilience and adaptability of the Ukrainian healthcare system in the face of adversity. There is a clear trend towards a more integrated, patient-focused, and technologically advanced healthcare model, aligning with international trends and prioritizing public health goals over private profits. This progress, however, is contingent upon continuous development, investment in technological infrastructure, and legislative support to sustain and advance digital health initiatives.

This Letter to the Editor provides an update on the research from the Glushkov Institute of Cybernetics of the National Academy of Sciences of Ukraine. The Institute’s research team in collaboration with Ternopil National Medical University began a new project called “Development of the cloud-based platform for patient-centered telerehabilitation of oncology patients with mathematical-related modeling.” The project is dedicated to the development of a hybrid cloud-based platform, and the creation on its basis of information technology for the telemedicine rehabilitation of cancer patients, and adapted for patients with combat stress disorder. The distinctive features of the proposed technology are a combination of artificial intelligence methods with accurate mathematical methods for optimization: developing mathematical models of problems of discrete, and non-smooth optimization, subgradient space transformation algorithms (to minimize non-smooth functions with tens of thousands of variables), and a method of global equilibrium search, etc.

Purpose: The primary objective of this study was to develop and implement a Hybrid Cloud Environment for Telerehabilitation (HCET) to enhance patient care and research in the Physical Medicine and Rehabilitation (PM&R) domain. This environment aims to integrate advanced information and communication technologies to support both traditional in-person therapy and digital health solutions. Background: Telerehabilitation is emerging as a core component of modern healthcare, especially within the PM&R field. By applying digital health technologies, telerehabilitation provides continuous, comprehensive support for patient rehabilitation, bridging the gap between traditional therapy, and remote healthcare delivery. This study focuses on the design, and implementation of a hybrid HCET system tailored for the PM&R domain. Methods: The study involved the development of a comprehensive architectural and structural organization for the HCET, including a three-layer model (infrastructure, platform, service layers). Core components of the HCET were designed and implemented, such as the Hospital Information System (HIS) for PM&R, the MedRehabBot system, and the MedLocalGPT project. These components were integrated using advanced technologies like large language models (LLMs), word embeddings, and ontology-related approaches, along with APIs for enhanced functionality and interaction. Findings: The HCET system was successfully implemented and is operational, providing a robust platform for telerehabilitation. Key features include the MVP of the HIS for PM&R, supporting patient profile management, and rehabilitation goal tracking; the MedRehabBot and WhiteBookBot systems; and the MedLocalGPT project, which offers sophisticated querying capabilities, and access to extensive domain-specific knowledge. The system supports both Ukrainian and English languages, ensuring broad accessibility and usability. Interpretation: The practical implementation, and operation of the HCET system demonstrate its potential to transform telerehabilitation within the PM&R domain. By integrating advanced technologies, and providing comprehensive digital health solutions, the HCET enhances patient care, supports ongoing rehabilitation, and facilitates advanced research. Future work will focus on optimizing services and expanding language support to further improve the system's functionality and impact.

This Letter to the Editor provides an update on the research from the Glushkov Institute of Cybernetics of the National Academy of Sciences of Ukraine. The Institute’s clinical research team is currently rehabilitating the military personnel of the Defense Forces of Ukraine with combat stress reaction and post-traumatic stress disorder using hybrid e-rehabilitation methods and techniques. Current research in the field of digital health and IoMT in Ukraine is creating innovative information technology for computerized electrocardiography. The conduct of rehabilitation and research in an active war zone with safety concerns, limited resources for research, and intermittent loss of power and water is very challenging.  

Shown the possibility of increasing the effectiveness of the rotary wave cryogenerator by partially changing the operating mode; experimental data were obtained confirming an increase in isentropic efficiency. The achieved efficiency values are in the range of 0.7–0.8 with a degree of expansion of 2.5–1.5. Found a mechanism to improve the efficiency of this device. The results obtained are confirmed by solving the equations of the wave process of energy transfer by the method of Godunov.

This editorial introduces the special issue of the International Journal of Telerehabilitation, which highlights advancements in telerehabilitation technologies and their applications in healthcare, particularly in cancer care. The issue addresses the importance of remote healthcare, especially in regions like Ukraine, where the wartime situation has posed significant challenges to traditional rehabilitation services. It also presents the Ukrainian Language Edition of the Guidelines on Telerehabilitation of Breast Cancer Patients and a theoretical study on the transdisciplinary aspects of telerehabilitation. The editorial further emphasizes the significance of the upcoming 4th National Congress of Physical and Rehabilitation Medicine in Ukraine, which will focus on multidisciplinary rehabilitation approaches amidst ongoing conflict.

Methods and software and hardware for modeling and developing a fundamentally new way of landing a quadrocopter on inclined surfaces are discussed in the paper. The current state of the project under elaboration is conditioned and described. Various approaches to the solution are feasible due to the complexity of the considered issue. Solutions can differ both in the distribution of control functions between the ground control station and the quadcopter itself, and in the choice of principles that can be used as the basis for the control system and determine its design and dynamic characteristics. Simulation and testing processes demonstrate that reverse thrust alone can increase the landing zone of an average mass quadcopter, almost doubling the maximum tilt angle at which a landing maneuver is made, thus, allowing for a high vertical speed landing. It is clearly shown that low-power adhesion mechanisms such as electrical adhesion, switchable magnets, grippers or dry glue are activated after landing, allowing it to stay on the surface after the back thrust has ceased. This can be useful in situations where sudden interference is likely to occur. Such a result is achieved using a classic quadrocopter as DJI F450 without adding any equipment.

Electrically conductive micro- and nanofibrous nonwoven materials were obtained by electrospinning of solutions of blends of polyaniline and a number of commodity polymers (polyamide-6, polylactic acid, polystyrene, polyethylene oxide). The average fiber diameter is in range of 0.5–6 µm; the addition of polyaniline to the spinning solution leads to a decrease in the fiber diameter. The composition of the obtained materials was confirmed by IR spectroscopy. It was found that during electrospinning the supramolecular structure of polyamide-6 and polylactide change (from α-phase to γ- and amorphous phases, respectively), while polyaniline does not form crystalline structures. It was shown that the specific electrical conductivity of the obtained nonwoven fabrics may reach 10 –3  S/cm, which allows for their application both in tissue engineering and in organic electronics.

One of the most effective solutions in medical rehabilitation assistance is remote patient / person-centered rehabilitation. Rehabilitation also needs effective methods for the “Physical therapist – Patient – Multidisciplinary team” system, including the statistical processing of large volumes of data. Therefore, along with the traditional means of rehabilitation, as part of the “Transdisciplinary intelligent information and analytical system for the rehabilitation processes support in a pandemic (TISP)” in this paper, we introduce and define: the basic concepts of the new hybrid e-rehabilitation notion and its fundamental foundations; the formalization concept of the new Smart-system for remote support of rehabilitation activities and services; and the methodological foundations for the use of services (UkrVectores and vHealth) of the remote Patient / Person-centered Smart-system. The software implementation of the services of the Smart-system has been developed.

AbstractWe present the results of testing of the previously proposed method for identifying species of archaeological wood materials by single-reflection attenuated total reflectance IR spectroscopy. The region 1270–1220 cm–1, in which two bands of different intensities were found, is most promising for identifying the species of archaeological wood samples. In the spectra of coniferous wood, a more intense band is located at approximately 1265 cm–1, and in the spectra of deciduous species, a more intense band is at 1230 cm–1.