Discover the Latest Journals in Architecture and Architectonics

Architecture is both the process and product of planning, designing, and constructing a building or structure, while architectonics is the scientific study of architecture itself. Architectural works are often considered important cultural symbols and works of art, and we often identify past civilizations with their architectural heritage.

Architecture and Architectonics

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Abstract

Real-time deformation measurements have the potential to be used in a wide range of civil and structural engineering applications. This paper introduces an algorithm that utilizes time-based photogrammetry to measure deformations in real-time. The hardware used in the algorithm consists of a camera and a computer that runs camera-control software and a MATLAB code. The code is responsible for detecting the approximate locations of the circular targets using normalized 2D cross-correlation and performing the sub-pixel measurement of the center by fitting an ellipse on the edges of the circular target. During an experimental load test of a concrete slab outfitted with Ringed Automated Detection targets, a series of images were taken at different loads. The coordinates of the targets were measured using the edge-ellipse operator, least-squares matching, and digital image correlation methods. The edge-ellipse operator has proven to be an effective method of measuring the image coordinates of circular targets.

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Pollack Periodica
Authors:
Muthusamy Saradha
,
Thaniarasu Ilango
,
Shanmugam Annamalai
, and
Krishnamurthy Muthumani

Abstract

An experimental study was carried out on geo-polymer and reinforced concrete beams to evaluate the flexural behavior of the beams for the structural grade of M30 concrete. The results show that the geo-polymer concrete beams exhibit similar flexural strength when compared to reinforced concrete beams. The split tensile strength, stiffness characters, the energy capacity and ductility relationship were also found with satisfactory results. The deflection and the stiffness degradation at the salient stages were found to be similar and thus the geo-polymer concrete beams find a good alternative to reinforced concrete beams under flexural behavior.

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Abstract

Recent studies showed a significant peak of the salt contamination in the Tisza River that exceeded ten times over the average level. The document summarizes the works performed on the investigation of ground displacement using multi-temporal satellite radar interferometry technique in Solotvyno mine located in Tiachiv region. Multi-temporal InSAR aims to identify coherent radar targets exhibiting high phase stability over the entire observation period and derives point data with locations corresponding mainly to the point-wise, man-made features. The middle area with no persecuted targets may correspond to the substantial physical changes of the surface caused by activities like mining or tunneling, adding, or removing structures or their components, and motion perceptible in one pixel.

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Abstract

This project is the design of the tourism service station in the coastal park, which not only meets the basic functional requirements of the park service station but also reconfigures the station space with the regional cultural characteristics of Qingdao. The design process is mainly conceived in five aspects: locality, landscape, identity, symbolization, and diversification. It integrates the cultural characteristics of Qingdao coastal tourism with the park landscape to create a tourist rest space with diversified experiences. The purpose of this paper is to explore the interface between the stations' design and the various links of the cultural tourism industry chain. The project will be created as the “Window of Qingdao” in Baisha River Park.

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Abstract

The digital economy is increasingly seen as an essential cornerstone in developing national strategies and industrial policies to enhance national competitiveness. On the other hand, a realistic assessment of digital readiness is essential for developing appropriate policies. In our paper, we group the countries of the European Union (EU) using three different methods applied to a dataset consisting of the four main dimensions of the EU's Digital Economy and Society Index (DESI) in order to identify Europe's main geographical “fault lines” in terms of digital readiness. DESI is a composite index aggregating several digitalization-related indicators to benchmark the progress of digital transformation in each member state. However, our methods aim not to rank countries but to identify groups of countries that are close to each other. The three methods used in the paper are partially ordered sets (poset), Tiered Data Envelopment Analysis (TDEA), and cluster analysis, known from multivariate statistics. The three types of clustering show a high degree of similarity, indicating the robustness of the results. Another research question relates to the extent to which the digital development of the EU Member States corresponds to the economic development of the countries and core–periphery relationships. While we can observe a high degree of similarity between the more and less developed clusters in terms of digital readiness and the groups that can be identified in terms of economic development and institutional quality, we also notice some peculiar exceptions (which could provide examples of best practices).

Open access
Pollack Periodica
Authors:
Levente Tugyi
,
Zoltán Siménfalvi
,
Gábor L. Szepesi
,
Csaba Kecskés
,
Zoltán Kerekes
, and
Tamás Sári

Abstract

In the event of a flammable liquid, gas, or vapor release the first step is to identify the type of outflow, which can fall into two categories sonic or subsonic. The two types of outflows carry different flow characteristics, which effect on the extent of the potentially explosive areas. In case of subsonic outflow, a short jet is formed without turbulent flow conditions at low velocity, which appears more concentrated around the source of release. With sonic outflow, a high velocity jet is formed with turbulent flow properties, which can extend further away from the source of release. The simulations examine the lower explosion limit of the flammable medium around the vessel where LEL20% or LEL40%. In addition, high temperature methane gas release was also presented.

Open access
Pollack Periodica
Authors:
Patrik Nagy
,
Katarzyna Kubiak-Wójcicka
,
Miroslav Garaj
,
Martina Zeleňáková
, and
Hany F. Abd-Elhamid

Abstract

This study aims to identify and establish the long-term fluctuation of the low flow in the Hornád River. Hydrological data of five stations was obtained from the Slovak Hydro-Meteorological Institute and used for the analysis aims to show the trends of low flow and variability of the outflow during the period from 1973 to 2020. To determine low water levels, the limit value of the flow corresponding to the 70% and 90% from the flow duration curve along with the higher ones, determined on the basis of daily values for the entire multiannual period, was used. The observed patterns of low-flow changes on the example of a mountain river can be a reference point for many different studies and model simulations for other rivers in Slovakia.

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Pollack Periodica
Authors:
Orest Voznyak
,
Victor Kaplun
,
Nadiia Spodyniuk
,
Edyta Dudkiewicz
,
Oleksandr Dovbush
,
Iryna Sukholova
, and
Mariana Kasynets

Abstract

This article is related to investigations of the capture hoods of the local exhaust ventilation. The purpose of the research: to increase the zone of action of local exhaust hoods and reduce the amount of air removed. It is equipped with two barriers for air: ring and cylindrical. The empirical dependences for air velocity determination near the suction zone are obtained. Graphs, chart and three-dimensional image visualizations of removed air jet velocity near capture hood with barriers for air are designed. The reduction of production energy consumption, material, and ventilation system maintenance costs due to the correction of the design of the capture hood are the main benefits of the new solution.

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Abstract

There is currently no accurate calculation procedure for determining the lateral-torsional buckling resistance of trapezoidally corrugated web girders. Therefore, a detailed investigation is performed in the frame of an experimental and numerical research program at the Department of Structural Engineering of the Budapest University of Technology and Economics. Based on the previous experimental results, a numerical model is developed to be used to determine the lateral-torsional buckling resistance by using deterministic method. The effect of flange size, corrugation geometry and boundary conditions are investigated. An improved design method is developed for the determination of the lateral-torsional buckling resistance of trapezoidally corrugated web girders.

Open access

Abstract

Analyzing the capacity of a signalized circular intersection is an essential aspect of traffic flow management. With the increased number of vehicles at the intersection, it is preferable to examine ways to increase capacity without altering the existing geometric features. A signalized circular intersection on the national highway in Győr, Hungary, between 47° 40′ 43.7988″ N and 17° 39′ 37.6668″ E is chosen and analyzed for capacity enhancement. The survey is conducted using 360-degree cameras. The PTV Vissim software is then used to construct a model based on the current and projected vehicle counts, as well as the current and proposed options. The result shows that it is possible to increase the capacity of signalized circular intersections without altering the geometric features.

Open access