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Zolotareva M.,St. Petersburg State University of Architecture and Civil Engineering
Journal of Architecture and Urbanism | Year: 2017

Architectural and urban planning activity has always been the most important component of the social and political life of any country and has always been subject to regulation. However, the nature, scope and organization of this regulation were different and depended on many factors. Russia was no exception in this respect. Since the Petrine time, the control system and regulation of architectural and construction process have constantly become more complex. In the Petrine era, the urban planning activities were involved in the orbit of government reforms. The primary targets were to change the principles of construction of urban society, to introduce the principles of regularity in all spheres of the public life, to form the regulatory structures of architectural and construction processes. Urban planning process in civil construction was one of the central areas of focus of the Russian urban development policy within the period of the late 17th century–the first half of the 18th century. The first half of the 18th century was marked by a significant step from the city of the Middle Ages towards the Modern Age city including all its elements, such as social and economic, organizational and political, urban planning, architectural and artistic. © 2017 Vilnius Gediminas Technical University (VGTU) Press.

Velichko T.I.,St. Petersburg State University of Architecture and Civil Engineering | Mikhailenko S.N.,Zuev Institute of Atmospheric Optics | Tashkun S.A.,Zuev Institute of Atmospheric Optics
Journal of Quantitative Spectroscopy and Radiative Transfer | Year: 2012

A set of mass-independent U mj and Δ mj parameters globally describing vibration-rotation energy levels of the CO molecule in the X 1σ + ground electronic state was fitted to more than 19,000 transitions of 12C 16O, 13C 16O, 14C 16O, 12C 17O, 13C 17O, 12C 18O, and 13C 18O isotopologues collected from the literature. The maximal values of the vibrational V and the rotational J quantum numbers included in the fit was 41 and 128, respectively. The weighted standard deviation of the fit is 66. Fitted parameters were used for calculation of Dunham coefficients Y mj for nine isotopologues 12C 16O, 13C 16O, 14C 16O, 12C 17O, 13C 17O, 14C 17O, 12C 18O, 13C 18O, and 14C 18O. Calculated transition frequencies based on the fitted parameters were compared with previously reported. A critical analysis of the CO HITRAN and HITEMP data is also presented. © 2012 Elsevier Ltd.

Anisimov S.,Wroclaw University of Technology | Anisimov S.,St. Petersburg State University of Architecture and Civil Engineering | Pandelidis D.,Wroclaw University of Technology | Jedlikowski A.,Wroclaw University of Technology | Polushkin V.,St. Petersburg State University of Architecture and Civil Engineering
Energy | Year: 2014

In this paper a novel cross-flow HMX (heat and mass exchanger) utilizing the M-cycle (Maisotsenko cycle) for dew point indirect evaporative cooling has been tested for the performance evaluation in terms of thermal effectiveness and specific cooling capacity under various ambient and operational conditions. Additionally, the operational performance of the investigated HMX was examined on the base of developed model. The obtained results from the model prediction have been compared with the experimental data. The positive results of this validation indicated that the proposed model may be successfully used for prediction of operational performance of the investigated HMX. The analysis presented in this paper further demonstrates attractiveness and high efficiency of the novel M-cycle HMX used for indirect evaporative cooling in air conditioning units. © 2014 Elsevier Ltd.

Sementsov S.V.,St. Petersburg State University of Architecture and Civil Engineering
Advanced Materials Research | Year: 2014

Before the foundation of St. Petersburg in 1703, there had for centuries existed a developed system of rural settlements located on the flat valleys and areas along the Neva River and around the Ladoga Lake. Since 1703, under the leadership of Peter I and his followers, there was carried out a systematic creation of the capital St. Petersburg agglomeration (St. Petersburg and residential suburbs around it), which was done on the basis of purposefully introduced principles of regularity and harmony of architectural ensembles, by the methods of large-scale reconstruction of the previous irregular system of the population settlement distribution. The scale of this new agglomeration had no analogues in world town-planning practice of the XVIII century and united spaces with the total area over 200 square kilometers, which extended from the town of Sestroretsk in the North to the town of Novgorod in the South, from the town of Narva in the West to the Volkhov River in the East. The regularity and multi-center character of the central city formed according to the pattern of a mesh and cellular structure (with the dimensions of 10 km by 15 km), was supplemented with a regularity of suburban ensembles` layout and multi-kilometer rectilinear axes – roads connecting them. Some of the roads had the length of several hundred km (such as the road from Moscow to St. Petersburg built in 1706-1718, that was as long as nearly 700 km). Huge suburban forest-park and natural-landscape spaces between palace and park ensembles were united as star-patterned compositions. This historically created agglomeration is deservedly included in the List of Objects of the World Heritage, but so far it has not received a unambiguous understanding of its uniqueness and needs a considerable effort in searching new individual ways of the historical heritage preservation. On the basis of the archive records, the contribution presents an analysis of regularities of consecutive and purposeful transformation of the historical rural settlements system existing up to the foundation of St. Petersburg into the capital St. Petersburg agglomeration of regular type. © (2014) Trans Tech Publications, Switzerland.

Kogan M.M.,St. Petersburg State University of Architecture and Civil Engineering
2014 European Control Conference, ECC 2014 | Year: 2014

In this paper we consider a minimax approach to the estimation and filtering problems in the stochastic framework, where covariances of the random factors are completely unknown. We introduce a notion of the attenuation level of random factors as a performance measure for both a linear unbiased estimate and a filter. This is the worst-case variance of the estimation error normalized by the sum of variances of all random factors over all nonzero covariance matrices. It is shown that this performance measure is equal to the spectral norm of the "transfer matrix" and therefore the minimax estimate and filter can be computed in terms of linear matrix inequalities (LMIs). Moreover, the explicit formulae for both the minimax estimate and the minimal value of the attenuation level are presented in the estimation problem. In addition, we demonstrate that the LMI technique can be applied to derive the optimal robust estimator and filter, when there is a priori information about convex polyhedral sets which unknown covariance matrices of random factors belong to.

Demin A.M.,St. Petersburg State University of Architecture and Civil Engineering
Glass Physics and Chemistry | Year: 2013

The suggested method allows for the calculation of a temperature dependence of the density, thermal conductivity, and specific thermal capacity of a raw briquet (from glass powder) during preheating in the course of foam glass production. The properties of the raw briquet were determined based on the structure and chemical composition of the raw material (glass). The resulting dependences can be used to solve the problems of heat-mass exchange. © 2013 Pleiades Publishing, Ltd.

Tokunova G.F.,St. Petersburg State University of Architecture and Civil Engineering
Advanced Materials Research | Year: 2014

Construction is the top priority sector in the economy having a direct impact on the population’s standards of living. Progress in construction is one of the key indexes to evaluate the level of economic and social development of a country. During the latest decades, the abovementioned circumstances have made the cluster policy, which can dramatically influence the competitive strength of both the construction business and of the national economy as a whole a forefront. The particular feature of cluster policy is that it unites the economic and social policy of the State with management of business entities. The purpose of the present article is as follows: basing on the analysis of the construction clusters performance of various countries in Europe, highlight their common and specific features and propose directions for further development. The tasks of the present investigation are: firstly, identify specific features of construction clusters establishment and development; secondly, define the basic features of European construction clusters, thirdly, identify common and specific features of construction clusters in various countries of Europe, fourthly, propose directions for promotion of the cluster policy in regard to the sphere of construction. © (2014) Trans Tech Publications, Switzerland.

Anisimov S.,Wroclaw University of Technology | Anisimov S.,St. Petersburg State University of Architecture and Civil Engineering | Pandelidis D.,Wroclaw University of Technology | Danielewicz J.,Wroclaw University of Technology
Energy | Year: 2015

This paper investigates a mathematical simulation and optimization of the heat and mass transfer processes in the indirect evaporative air cooler. The heat exchanger uses a novel combined parallel and regenerative counter-flow arrangement. A two-dimensional heat and mass transfer model is developed to perform the thermal calculations of the indirect evaporative cooling process. Mathematical model was validated against existing experimental data. The results obtained from the simulation reveal the high effectiveness of the presented unit. The exchanger was compared with the conventional regenerative unit. The results of comparison show, that the presented unit is characterized by higher effectiveness. The impact of the selected unitless operating factors on the performance of the investigated heat exchanger was established. The conducted multi-criteria optimization allowed to establish Pareto-optimal operating conditions and preferable climatic zones for the presented heat exchanger. © 2014 Elsevier Ltd.

Shirunov G.N.,St. Petersburg State University of Architecture and Civil Engineering
2014 International Conference on Computer Technologies in Physical and Engineering Applications, ICCTPEA 2014 - Proceedings | Year: 2014

A 3d problem of loading a linearly elastic layer using a method of initial functions is solved. Its realization is made in Maple system. A comparison with the FEM solution is presented. © 2014 IEEE.

Semenov A.A.,St. Petersburg State University of Architecture and Civil Engineering
Thin-Walled Structures | Year: 2016

The article presents a methodology for the study of shell structure strength and stability. The basis of the study is a geometrically nonlinear mathematical model, which takes into account the transverse shifts and orthotropy of material. The model is presented in dimensionless parameters in the form of the total energy potential functional and can be used for different types of shells of revolution. The model is studied by using an algorithm based on the Ritz method and the method of solution continuation according to the best parameter (MSCBP), which allows for obtaining the values of the upper and lower critical loads and examining the supercritical behavior of designs. In accordance with an algorithm, the computer program has been developed and a comprehensive study of the strength and stability of shallow shells (which are square in plane), cylindrical, and conical panels has been explored. The load loss of strength and buckling load values have been obtained, and their relationship to one another has been demonstrated. © 2016 Elsevier Ltd. All rights reserved.

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