There are two trends in modern lighting: the first one is lighting intelligence and adaptability, and the other is an orientation on the biological effects of light on the human body. This article analyzes the possibilities for further development of adaptive lighting systems from human biomonitoring data integration point of view. A review of wearable medical devices, which in the future could work as sensors of an adaptive lighting system, is presented.

The analysis of scientific papers revealed that the majority of studies in the field of lighting control systems are devoted to energy conservation, and single-user interaction with lighting. At the same time, the issue related to the impact of lighting on human stress levels in an educational environment is covered only by a number of studies that have investigated lighting parameters for different types of human activities. While there are known dependencies of the positive influence of lighting on reducing conflict behavior and stress levels in multi-user spaces, there is no mechanism for adapting appropriate lighting systems to the psycho-emotional state of users of such spaces. The paper presents the analysis of scientific publications and patents on non-visual effects of lighting on human body. The effects of lighting on conflict behavior and stressful state of a person were studied when using adaptive lighting systems. The methods and approaches of the developed adaptive lighting systems and the constraints associated with these methods were analyzed. The results of theoretical and experimental studies are given. A set of methods and tools to create an intelligent multi-user adaptive lighting system is proposed.

Within the big city boundaries, artificial component of the sky glow increases every year. The main reasons are the expansion of the cities, the rapid growth of technical capabilities, inefficient lighting design without master-planning and lack of quality control of lighting projects. The data of astronomical observations confirm a significant brightness increasing in the lower atmosphere due to factors of terrestrial origin. The problem is mostly acute for observatories are located near major cities, which are struggling for the possibility of further research. Night sky background glow estimation is an actual direction for research in the modern world. The paper considers a model for calculating the sky brightness for the St. Petersburg city. According to the developed model observation position is located near the Pulkovo Observatory. The model is based on the Garstang’s method with use of Python programming language.

Current conditions of increasing conflict and uncertainty point out the guidelines for the change of education correlated with the model of “knowledge society” and the goals of sustainable development in a digital society. These guidelines actualize the involvement of all citizens and institutions in the process of lifelong education and upbringing. These two notions as factors of national security require the readiness of future teachers and specialists in the social sphere to build constructive interaction with a wide range of participants in various realms. The transformation of professional training should be carried out considering the attitude to it of students themselves. The article conveys the results of a study of the pedagogical university students' satisfaction with the preparation for educational activities interaction under digitalization conditions. During the survey 446 third- to fifth-year students were interviewed, two groups of students were compared: future teachers (teachers of various subjects), future social sphere specialists (students majoring in social work, psychological and pedagogical education, vocational training, special (defectological) education, and management). The results of the study provided us with the structure of students' satisfaction with educational activities preparation that includes three factors: personal satisfaction, interactive satisfaction and satisfaction with theoretical and practical training. Overall, students have an average level of satisfaction with training in general, while they are relatively less satisfied with the interactive factor. The outcomes of the study established the following difference: future subject teachers are less satisfied with their preparation for interaction in the educational process than future specialists in the social sphere. The use of information technologies by students in educational activities correlates with the level of satisfaction concerning all three factors. Still, the strongest connection is revealed within interaction satisfaction. The results of the research allow us to empirically confirm the structure of the previously developed model of proactive preparation for educational activities and make relevant adjustments: (1) clarify the composition of subsystems (subject-environment, content, process); (2) update networking (expanding the range and productivity of interaction during the training period); (3) enhance the content of subsystems by including up-to-date information and communication technologies to organize students' training in the context of digitalization.

The results of existing research regarding the relationship between color temperature, lighting parameters, and mental state have limited data on multi-user space. This study is aimed at identifying the possible effect of color temperature and illuminance on mood, concentration, and, as a result, improvement or deterioration of the performance. During the experiment, the participants solved problems related to professional and educational activities. The collection of data on the mental state of the subjects was carried out automatically using an electronic survey including: self-assessment scale (SAN), state-trait anxiety inventory, visual-associative self-assessment of the emotional state of the masked personality, subjective well-being scale. In addition, to the assess performance, Kraepelin Table was used. The relationship between lighting and the mental state often manifests itself after a long-term effect. The illumination modes 3500 K 325 lx and 4000 K 300 lx are the most optimal modes for implementing artificial lighting in adaptive systems for office spaces. The collected results, conclusions, and recommendations were based on correlating the data of psychological surveys of participants and an objective method of analysis based on the investigation of the keyboard handwriting of subjects. The results show that color temperature and light levels affect behavior, mood, and performance in multiplayer environments. Taking into account the results obtained, this adaptive lighting technology can be introduced into the system of an office or study space, where adaptation is important not only for a specific person, but also for a group of users.