The article gives a brief characterization of the structure of the architectural environment on the basis of accessibility as a spatial system, represented as the object of professional activity of graduates in areas of training of undergraduate and graduate programs. Summarized information about the methods and technologies applied in the educational process.

The article considers problems of formation in modern conditions of architectural environment as the subject-spatial environment, represented as the object of professional activity. A leading role in shaping the environment, satisfying the modern requirements, the allotted project activities.

The article deals with the systemic substantiation of architectural objects' (buildings, constructions and their complexes, including those in the sphere of urban development and regional planning) functional structure as integral systems. It is demonstrated that implementing the relevant objectives of modernizing the existing buildings and constructions, erecting the new ones and developing architectural and urban-planning systems is possible only in conditions of using advanced digital technologies, which is closely connected to developing mathematical models, describing architectural objects from the perspective of system approach and general system principles. Much attention in the paper is given to the discussion of a new methodological concept, based on the principles of general systems theory and dealing with the research and design of architectural systems of the «population ↔ environment» type – demoecosystems (integral architectural systems). Based on this concept the definition and substantiation of any architectural object's functional structure can be given, revealing its system essence and structure. The similarity (isomorphism) of the whole and parts of architectural objects' elements and subsystems at all hierarchy levels allows considering the functional structure of an architectural object of any complexity with account of organizing the processes of four types of population's life activity. It is applicable to architectural objects from their elementary levels – room and building, and to the level of cities and populated areas.

One of the priorities of the state policy in the field of transport infrastructure development is the modernization of the Russian seaport infrastructure, the creation of modern competitive transport hubs and other architectural objects with a complex functional and planning structure. This article is devoted to the study of functional and technological solutions of modern sea passenger terminals and the requirements to these solutions taking into account the interests of consumers, including people with limited mobility. The functional diagram of the passenger building of the seaport and types of pre-trip passenger training operations are given. It is shown that the efficient decisions of optimizing functional , technological, architectural and planning solutions of seaport passenger terminals is possible with the use of modern IT and technologies for passenger handling. From the perspective of system approach the tasks of functional and technological solutions’ optimization are aimed at achieving the high quality of architectural environment and are the mathematical programming tasks.

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