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
Revisiting the Geometry of the Transition Zone Using Filposh Squinches in Ardeshir Palace
A kupola és a kupoladob geometriájának vizsgálata az Ardesir palotában
Iranians invented squinches to cover a square-plan space with a dome. Filposh, a type of squinch first found in Sasanian architecture, is a conical vault constructed in the transition zone’s corners to transmit the dome’s forces and weight. This technique can be seen in three halls of the Sasanian palace of Ardeshir. In this paper, the geometry of the transition zone using filposh squinches between a spherical dome and the square supporting walls in Ardeshir Palace was re-examined. A historical descriptive method was employed to analyse the main drawings of the halls from the nineteenth century to the present, and two hypotheses concerning the geometry of the transition zone were modelled and evaluated. As a result, the hypothesis that the dome’s cross-section intersects the chamber’s square plan is rejected. Furthermore, the claim that the transition zone’s square plan circumscribes the dome’s cross-section was discussed and proven.
Abstract
The demand for automation using mobile robots has been increased dramatically in the last decade. Nowadays, mobile robots are used for various applications that are not attainable to humans. Omnidirectional mobile robots are one particular type of these mobile robots, which has been the center of attention for their maneuverability and ability to track complex trajectories with ease, unlike their differential type counterparts. However, one of the disadvantages of these robots is their complex dynamical model, which poses several challenges to their control approach. In this work, the modeling of a four-wheeled omnidirectional mobile robot is developed. Moreover, an intelligent Proportional Integral Derivative (PID) neural network control methodology is developed for trajectory tracking tasks, and Particle Swarm Optimization (PSO) algorithm is utilized to find optimized controller's weights. The simulation study is conducted using Simulink and Matlab package, and the results confirmed the accuracy of the proposed intelligent control method to perform trajectory tracking tasks.
Abstract
An enterprise framework based on the philosophy research approach to Information System (IS) features a holistic view in an industry that allows room for technological advancement, an industry with increasing expectations and demands for IS drives towards a more integrated framework and rethinking of the concept of delivering insightful outcomes. The specific features of IS in this study focus on the information criteria for the daily assignment of the railway industry operations through an industry enterprise framework. The study objective is to provide a comprehensive understanding of emerging knowledge from structuring IS and enterprise framework stages and their mashup characteristics in designing a model-driven development framework. The outcome will be a design of a strategic performance framework for a typical strategic performance application as the most vital outcome indicators, to focus on understanding the baseline of technology revolution (Industry Revolution 5.0) achievement to measure the transformation expected and the railway industry evaluation, based on the year-on-year target will be established. The usage of decision-making systems and strategic applications has increased massively to fulfill various kinds of purposes for organizations, businesses, and individuals. In this case, a high-quality decision-making system and strategic application are required to ensure it provides the intended functionalities.
Város, lakókörnyezet, karakter. Fejezetek a budai Várnegyed történetéből című konferencia anyagából
Excerpts of the Conference City, Residential Environment, Character. Chapters from the History of the Buda Castle District
The Scientific Committee on Architecture of the Hungarian Academy of Sciences, in cooperation with the Standing Committee on the History and Theory of Architecture and Monument Preservation, organized a scientific conference on the history of the Castle District in Buda held on May 12, 2022, at the National Archives. The constructions and demolitions taking place in the area of the Buda Castle made the meeting topical, the main purpose of which was to present the development of the medieval city of Buda from the 13th century to the change of regime through the most experienced specialists – architects, archaeologists, art historians. In addition to presenting the new research results, the speakers were also asked to evaluate the contribution of each era to the development of the character of the Castle District: what values were created, what mistakes were made, and how they influenced the functions and the quality of living in this walled-in urban unit. All of this can help to judge more objectively what counts as a historical, architectural, or urban value, and how we should behave in this area so that we preserve as much of these values and the character of the Castle District as possible for future generations.
A budai Várnegyed fejleszthetőségének városépítészeti vonatkozásai
Történelmi városközpontok morfológiai adottságainak és rekonstrukciós folyamatainak összevetése
Questions at the Urban Scale on the Development of the Buda Castle District
Comparing the Morphological Givens and Reconstruction Processes of Historical Urban Centres
The reconstruction of the Buda Castle District after the Second World War gave back the medieval and baroque values and scale to the old civic town, filling its buildings with cultural, residential and tourism related functions. As the only comprehensive historical centre in Budapest, this place carries the memory of historical events, the architectural artefacts, but also the pride of the citizens who built this city. The state intended to build centres of power in this historical civic environment both in the dualism of the late 19th century and today, trying to push a role larger in scale and meaning than the urban fabric might comfortably accommodate. Besides the objective morphological arguments about the functional limits a medieval urban fabric designed to small scale movements can bear the comparison with successful international practices also reinforces the assumption that the Buda Castle District can only be a liveable and successful neighbourhood if filled with housing and culture types that can coexist with the historical layers and their original scale. This study compares the reconstruction processes of Buda after the world war and today in the National Hauszmann Programme not with each other, but with the morphological aspects and reconstruction of other European historic centres. Space Syntax analyses showed how all of these centres are isolated with respect to the 19th century urban fabric around them but are quite integrated at a pedestrian scale. This means that their streets cannot bear the modern administrative and productive functions of the modern city, but they comply quite well with the contemporary development trends of the liveable 15-minute city, as well as the tourist city. The post-war reconstruction of Buda’s Castle District does not stand behind the reconstructions of other European centres damaged in the Second World War, in fact, it was ahead of its time. On the other hand, today’s interventions do not stand out from other European processes in the method of rebuilding long gone buildings, but in their functions, in not following the European logic behind the selection of the historical period targeted by the reconstruction, as well as in avoiding the initiatives of local society.
Remodelling a Medieval Net Vault Construction
Case Study: The Apse Vault in the Catholic Church of Andocs
Középkori hálóboltozat szerkesztés újramodellezve
Az andocsi templom szentélyboltozata
In the present study, we analysed the exact, laser-scanned geometry of the apse vault of the catholic church of Andocs. The written sources about this vault are very limited, however, the point cloud-based research could provide new details about the history of the building, along with the formerly used building techniques. For the analysis, we worked based on our three-step analysis process, established for net vaults. During the studying of the rib system, we reconstructed the probable original construction and building method, as well as the temporary supporting structures of the early 16th-century vault. The analysis of the individual ribs led us to conclusions about this vault, in the mirror of the widespread ideas of the topic’s technical literature, such as the “Prinzipalbogen” theory (all the ribs of a given net vault have the same curvature), or the principle of the longest route (the cumulated length of the ribs’ plan, which led from the impost to the crown with the longest possible route equals to the radius of the ribs’ curvature). Regarding the curvilinear rib elements, we presumed a likely fabrication method, based on contemporary research results. Mapping the webbing and the ribs, we concluded their building order, as well as the plausible masonry technique of the webs.
Abstract
A heat pipe is a heat conduction program that utilizes both heat permeability and regime shift concepts to transport heat effectively between 2 different lines. A heat pipe is made up of a pipe or tube and a base fluid. In practice, the heat pipe is poured into a mould that is compatible with the cooling media. These devices have found uses in a variety of fields, including space apparatus, solar energy systems, electronic equipment, and air conditioning systems, due to their simplicity of design and ease of manufacture and maintenance. Thermal performance improvement being the major concern in our project we researched different techniques. The heating surface area has a direct impact on heat transfer. Therefore, we have focused on heat enhancement by introducing grooves. Alongside we also considered using different materials for the pipe. At the end of our research, we are going to produce groove structure models with different materials and analyze them using ANSYS software and propose the best structures with highest thermal efficiency for different applications of heat pipes. This is an attempt to increase heat transmission in response to various material and structural changes. Heat transmission is improved with grooved heat pipes as well as heat transmission various with different types materials used in heat pipe.
Abstract
This paper compared the performance between Integer Order Fuzzy PID (IOFPID) and Fractional Order Fuzzy PID (FOFPID) controllers for inverted pendulum system as a controlling plant. The parameters of each controller were tuned with four evolutionary optimization algorithms (Social Spider Optimization (SSO), Swarm Optimization (PSO), Genetic Algorithm (GA), and Particle Ant Colony Optimization (ACO)). The comparisons were carried out between the two controllers IOFPID and FOFPID, as well as among the four optimization algorithms for the two controllers. The results of comparisons proved that the FOFPID controller with SSO has achieved the best time response characteristics and the least tuning time.
Buda, a keleties város
Buda, a City with Oriental Elements
In the wake of Ottoman Conquer, a totally distinct culture emerged in Buda whose institutional system was to be set up in that period. Buda lacked everything that Ottomans expected from their towns, necessary for their everyday life: neither djamis or Quran schools, nor baths, etc. were available. These institutions needed to be constructed, requiring new buildings. Having been built according to Ottoman style, these new buildings were erected in the suburbs, whilst the Castle Hill [Várhegy] preserved its mediaeval appearance. Mediaeval buildings on the Castle Hill were refunctionalized, giving way to Ottoman institutions. First, churches were altered into djamis, implying the full reconstruction of their interior. Followingly, places that could have been associated with more functions were used, such as mediaeval buildings for schools, public kitchens and roofed marketplace. The bath and the tomb were new facilities that were to be built as new edifices on the Castle Hill. These were required for an Ottoman town to function, so it is easy to see how every facility local Ottomans needed had been built or altered in the very beginning of the period. Significant changes can be identified as a result of the evolution of new urban quarters.
Ottoman Conquer
Ottomans moved into houses in the castle. Although 122 families lived there in the 16th century, Hungarian townees technically abandoned the Castle Hill by the end of the century. Houses underwent alterations; significant demolition and the construction of a totally new complex took place at the Pashas’ Palace [Pasa Palota].
A budai Várnegyed műemléki kutatása és helyreállítása 1945–1960
Reconstruction of the Buda Castle District 1945–1960
The siege of Budapest in 1944–1945 caused serious damage to the building stock of the Buda Castle District. Paradoxically, it was precisely this destruction that contributed to the discovery of previously unknown – often significant – remains of the Middle Ages in most of the buildings in the quarter. The main goal of this study is to show what possibilities the architects saw for the renovation of damaged buildings, for the reconstruction of their previous state, or for the display of valuable details. It presents the often changing institutional framework of this work, the best professionals and the principles on which they all agreed in the case of the Castle District, which was regarded as a protected area on the basis of the 1949 legal decree. These were recorded in the first development plan (1948–1949), whose guidelines (the main value being the character, scale and traditional streetscapes of the medieval-baroque town) gained general acceptance until recently. The upper floors of the excessively tall buildings of the late 19th century were demolished, and their over-emphasized architecture was toned down. The detailed development plan of 1954 already took into account the needs of the residents, but it regulated the necessary infill houses quite schematically. Between 1948 and 1960, a number of monument restorations were completed, but the infill housing only really began in 1957. The few examples that were realized earlier tried to adapt to the historic environment with neutral forms. The young generation of architects called them ‘Nikotex houses’ (referring to a cigarette trademark with reduced nicotine content), and believed that if every age built in its own style then modern architecture should do the same.
Itáliai és német építőmesterek tevékenysége a budai polgárvárosban a török kiűzése után
Activities of Italian and German Master Builders in Buda After the Expulsion of the Turks
After its recapture in 1686, the city of Buda was reborn from the ruins and the initially village-like conditions, slowly and then at an ever-increasing pace. The Court Chamber began to settle foreign, mostly German-speaking, Catholic residents, luring the masters to Pest-Buda with favourable conditions.
Lipót I appointed the imperial master builder Venerio Ceresola to manage the fortification works in Buda, who already started organizing the reconstruction in October 1686. Construction workers came from different parts of the country and organized themselves into a guild led by Ceresola in association with the stonecutters. The Buda Masons’ and Stonecutters’ Guild was established in 1690 and operated until the guilds were dissolved in 1872. The designation of these masters as civilian master masons had then a different meaning because the highest qualification obtainable within the architectural profession at that time was mason mastery, and this could only be achieved within a guild and only with a master’s exam. The name architect or master builder meant only a title, i.e., it was a sign of office or rank, such as the title of manorial or chamber architect.
Ceresola was also a house owner in Buda, and he started to build the Buda Town Hall, which was later expanded or rebuilt by several members of the guild during the 18th century, including Johannes Hölbling, Johann Conrad Vogl, and Matthias Nöpauer. Among the members of the guild, Johannes Hölbling stands out, who, like Ceresola, was also an imperial master builder, one of his works, for example, was the construction of the Zeughaus. Matthias Nöpauer designed and built the Erdődy Palace, and he also owned the Vörös Sün (Red Hedgehog) inn at Hess András Square 3.
The names of the members of this guild are associated with construction of churches, monasteries, and public buildings, starting with simple Baroque residential buildings. To a large extent, they rebuilt the city of Buda, which includes not only the upper city, but also the suburbs, and the members of this guild, as main guild, were entitled to build throughout the country.
Abstract
As of 2020, the mining industry in the province of Quebec (Canada) has been providing 16,000 jobs, the majority of these in the north part of the province and in the Abitibi-Témiscamingue region. From the exploration phase to the mining site rehabilitation phase, numerous chemical processes are used, often involving some of the most dangerous substances used on industrial scales.
The hazards associated with many of these substances are in some cases not obvious, and symptoms of exposure may take years to appear. The risks associated with the industrial use of chemicals in Canada and abroad has long preoccupied health authorities, given the severity of the diseases that can occur. In Quebec, occupational diseases associated with exposure to industrial chemicals are reaching 1,500 cases per year.
The principal focus of this study, presented in two articles, is to set a preliminary theoretical framework for categorizing chemicals in terms of their effects on the health of workers throughout the various phases of mining projects. The objective is to decrease (over the long term) the number of occupational diseases due to the use of chemicals by raising awareness among employers and exposed workers in the mining sector.
This research was conducted in four phases. The present article contains the results of the first two stages, that is, a review of the literature to catalog the industrial chemicals used in mines and to list the potential effects of exposure to them, based on Safety Data Sheets. Eighty-five (85) chemicals used in at least one mining project phase and dozens of potential effects on worker health were identified. The rest of the study is presented in a second article [1]
Abstract
This article deals with balancing an autonomous motorcycle model along a straight line and curve lines. The dynamic model of the motorcycle balancing is described with an inverted physical pendulum loaded with torque. The torque is provided by the inertia of a rotor driven by a direct current motor. The lean angle of the motorcycle is measured by a smart sensor, which is the feedback signal for the linear quadratic regulator control system. The main purpose of this study is to compensate the error of the smart sensor. Controlling the necessary lean angle of the motorcycle during cornering is also addressed.
Abstract
The aim of the study is to determine the environmental conditions in the territory of the Myjava river basin (Slovakia) in order to analyze changes in the ecological stability from the first military mapping (1769–1784) until the present (2020). Except of the assessment of the ecological condition of the area, the stress factors of the territory were evaluated together with proposed measures according to the need to improve the current situation. The ecological prosperity of the landscape was evaluated based on the several methodologies used in Slovakia including coefficients of ecological stability. The results pointed to changes in ecological stability during the period evaluated, together with analyses of the stress factors that are currently affecting the territory researched.
Abstract
Dynamic contact and impact problems are widely applicable. An accurate solution method for these kinds of problems can be used in many fields of mechanical engineering (e.g., cutting metalwork, cogwheel drives, etc.). However, the proper handling of the contact is problematic, as there emerges a substantial amount of nonlinearity in the displacement field. Therefore, a spurious high frequency oscillation is present in the solution. These oscillations must be avoided, as divergence can easily occur in the contact algorithm due to them. In order to eliminate this effect, the applied numerical method must be chosen and set properly. In this study, a comprehensive guide is provided for the appropriate selection of the proper numerical method and its parameters.
Abstract
In the Hydraulic Laboratory of the Department of Hydraulic Engineering, Faculty of Civil Engineering, Slovak University of Technology in Bratislava the distribution of the flow velocity in a shaft intake structure was investigated on a physical model. The homogeneity of the flow velocity distribution in the intakes of turbines has a great influence on the turbine performance. Modern optical methods, particle image velocimetry and laser Doppler anemometry, were used to measure the flow velocity distribution in the model of the turbine intake. The particle image velocimetry method provides a record of the velocity field, while the laser Doppler anemometry method provides an accurate indication of the velocity at a given point. The flow velocity distributions in the examined profiles were measured by the particle image velocimetry and laser Doppler anemometry methods and the results were compared with each other.
Abstract
On the basis of elaborating the connotation of intensive city block, it is pointed out that the intensive structure organization is the key to realize intensive city block. The order complexity of the block structure is formed by the close connection, overlapping of elements, the depth difference and their compound association. This paper constructs the basic pedigree of block structure design from three levels of street configuration, plot organization and building layout, and forms the derivation and comprehensive application strategy of pedigree from the organic linkage and compound of each other.
Abstract
Algae are an evolutionary model of success and colonize all suitable ecological niches including building material surfaces that have favorable characteristics. In the last 25 years, building physics measures were developed to reduce water availability, especially on external thermal insulation composite systems.
Investigations into the influence of coating formulations have so far primarily focused on binder systems, biocides and hygrothermal properties. Research on the algal susceptibility due to the fillers is not to be found, but these regularly constitute a large proportion of final coatings. The present work investigates the influence of magnesium-containing fillers in the process of algal colonization of free-weathered façade coatings and a defense-strategy by water-activated pigment composition.
Abstract
The aim of this study is to design a pylon with an engineering structure that gives it support and strength and manufacture a pylon characterized by low cost, lightweight, and bearing the patient's weight. This study designed two pylon models and fabricated by additive manufacturing techniques. The polylactic acid polymer is used as the filament for the 3D printing of pylons. A force plate and tensile test with finite element method simulation ANSYS software were applied to the pylons to evaluate their performance. The results showed that 3D printed pylon with Y-section has enough strength under stress and good safety factor, and the ability to bear a high patient load without buckling and exceed the requirements to become instead of the metallic prosthetic pylons.
Abstract
With the rapid importance of high-performance energy modeling of buildings, whole-building energy simulation engines are rapidly used in the decision-making process. However, there are tens of engines in the market, which makes the choice of design engine very challenging. This article provides a comparison of the applications of whole-building energy simulation to predict a significant number of systems. As a result, the selected engines will be compared to establish their characteristics and abilities. Nevertheless, the focus will be placed on: generic criteria; envelope; lighting; service hot water; Heating-ventilation; and renewable systems. However, the authors found that an engine could be used extensively in one system and has limited capabilities in another system.
Abstract
Concrete-filled steel tube columns are widely used in civil engineering structures due to their excellent ductility, energy absorption capacity, ultimate load-bearing capacity, and seismic behavior. In this paper, a numerical study modeling of eight lightweight concrete and conventional concrete filled steel tubes was carried out using ABAQUS software, and the lateral load-carrying capacity of square and circular steel tubes under cyclic load was compared. The quarter and one-third height of the tubes was filled with concrete with respect to the pier's height, to improve the base performance of the piers. The results show that the capacity of steel tubes filled with lightweight concrete increased by 40%–70% regarding energy absorption. The square tubes showed better performance than the circular tubes in terms of yielding load, yielding displacement, and energy dissipation.
Abstract
To estimate and model explosion pressure rise in closed volumes, industrial applications require a simple method. Ideal gas model is capable to assume pressure rise values to 10% above to initial pressure. However, most of the explosion venting devices opens higher than this pressure range.
Extension of ideal gas model was carried out in this paper. Authors made some experimental studies in 20 L explosion sphere at ambient temperature and atmospheric initial pressure, with propane-air mixtures at different concentrations between 2.8 and 6.3 vol%. They measured pressure values inside the chamber during explosion and recorded at 9,600 Hz. Based on experimental studies, authors extended ideal gas model application range to 1.5 barg.
Abstract
This study aims to select the suitable density of the material according to the mechanical properties needed by the 3D-printing application in which it will be used. 3D-printed carbon fiber filaments with different printing densities have been tensile, and a fatigue test was experimented with to find the mechanical properties. Furthermore, the modulus of elasticity, yield stress, and ultimate tensile strength of the material was determined by analyzing the stress-strain curves. The result shows that the parts printed with a high infill density give better mechanical properties, more time to build the object, more strength, and heavier weight than those printed with low infill density.
Abstract
Accessibility is known as the ease of reaching destinations. The accessibility is determined by the spatial distribution of potential destinations, and the magnitude, quality, and character of the activities found there. However, modernization and the fast expansion of urban development transform cities' local cultural life from walkable accessible places to just car places. This has encroached into every corner of our urban environment today. In addition, the available services and systems to manage the pedestrian movement in the historic core are inadequate and inefficient, posing risks to both the traffic and the pedestrians. That affects the walkability for cities gradually. Hence, this paper aims to explore the main physical elements that contribute toward accessibility under three main categories (pedestrians, vehicles and public transport) as one of the walkability characters in Salt City in Jordan. Historical review, site analysis, and survey were the main methodology used in this study.
Abstract
Cracking in composite steel-concrete bridge decks is a common problem in civil engineering. Before, or shortly after, the bridge is subjected to live loads; various levels of cracking can appear, mostly due to plastic shrinkage and temperature effects.
This paper presents an investigation of the behavior of cracked concrete in a composite deck slab of a railway bridge supported by steel girders using the finite element method. Eurocode 4-2 proposes a few simplified methods for calculating shrinkage and cracking effects in concrete. Through the proposed methods of analysis, an analytical simulation of a continuous composite steel-concrete bridge deck is performed and some practical recommendations for analyzing beam girders of this type are given.
Abstract
Metal injection molding has undergone great growth in the last years and is widely used in the manufacturing of small-sized and geometrically complex metal parts in high-volume production series in many applications. This paper makes overview of the integrity evaluation of metal injection molding production. Digital radiography can automatize the process of controlling various discontinuities inside the material, with sensitivity acceptable by the standard. Image processing through software Rythm Review 2.2, allows the detection of discontinuities in complicated geometric shapes. Tests were made on items with thicknesses 3 – up to 8 mm, with complicated geometry. The result is satisfactory in terms of localization and evaluation of defects in both dimensions and typology.
Abstract
This paper presents an experimental work of using crushed glass mixed with the poorly graded sandy soil to investigate the possibility of shear strength parameters improvement using the direct shear test. The crushed glass is sieved and prepared for seven sets of percentages, the collected percentages of crushed glass represented a mix of glass retained on sieves No. 4, No. 8, No. 30, No. 100, and No. 200 and were added as a weight ratio of the sample for many cases. The main results of this work show that the mixing 10% of crushed glass for sieves No. 8, No. 200, and No. 50 increase the angle of internal friction of poorly graded sand (Ø˚) about 15%, 3%, and 29% respectively, and mixing 10% of crushed glass retained on sieve No. 4 decrease Ø˚ about 40%.
Abstract
This study evaluates future hydrological alterations caused by climatic changes until 2100 using climate change scenarios. The indicators of hydrologic alteration software program assess predicted changes in flow characteristics and the degree of hydrological alteration obtained through a range of variability approach analysis. The study was performed on the Hron River basin in Slovakia, using the daily discharges from the observation period of 1981–2010 and a modelled scenario of daily discharges until 2100. The time period investigated was divided into three periods among which four ranges of variability approach analysis were conducted. The study results presented assume an increased incidence of drought in the summer months. In the winter months, the period of increased flows is expected to intensify.
Abstract
The natural fibre containing cellulose as its main component that can be used as an alternative material to improve the strength of polymer composites. Paper focused on the determination of the best volume fraction of sugarcane fibre-reinforced polymer composites. Three variants of alkalization time were carried out. The highest average value of the tensile test results was obtained at an alkalization time of 1.5 h with a tensile strength of 41 N mm−2 and elongation correspond to 11.806% where the highest bending test results were obtained at an alkalizing time of 0.5 h with a bending strength of 24.89 N mm−2. The results of mechanical interlocking have been observed on macrostructure photo and at 1.5 h of alkalization are better than 0.5 h and 1 h of alkalizing time.
Abstract
This manuscript proposes a novel adaptive restarting genetic algorithm-based solution approach for rescheduling generation-based congestion control. The generator sensitivity values are considered to select generators to participate in the congestion management. The efficacy of the suggested technique is demonstrated on a 39-bus New England system and a modified IEEE 30 bus system, and a comparative study with other optimization strategies are established. The findings produced with the suggested technique for congestion management better the outcomes obtained with different methods. The presented approach ensures a superior convergence profile by eliminating local minima traps. This method also assists the independent system operator in managing congestion more efficiently.
Abstract
A major object of prosthetics fitting procedure his to provide the amputee with the greatest potential long-term rehabilitation result by providing the finest feasible design. The foot keel and ankle joint are two key components for transtibial prosthetic users. This essay's objective is to determine the effect of systematically altering the stiffness of prosthetic foot keel and ankle joint on standing in individuals who have undergone unilateral transtibial amputations. A balance analysis was carried out to select the optimal combination of prosthetic foot and joint. According to the findings, the medium foot and soft ankle joint is the best one for standing analysis.
Abstract
The focus of this study is how Xiazhuang Village with high quality resources can achieve sustainable development in the new era by protecting and transforming vernacular architecture. Based on the layout of village, the characteristics of vernacular architecture and the ecological advantages of construction technology, this study puts forward the classification renewal and optimization design based on different buildings to solve the problems of village. Try to find a way to continue the historical context of vernacular architecture and satisfy the development of rural tourism at the same time.
Abstract
Modern buildings in Algeria consume a huge amount of energy and deliver modest thermal comfort, due to their design which does not address the local climate conditions. In contrast, it is commonly recognized that vernacular architecture is climate-responsive and environmentally friendly architecture.
This study aims to assess the thermal performance of vernacular architecture in the hot and dry climate of the Ziban region, Biskra. It was achieved by describing the main passive strategies in this architecture, later performing field hygrothermal measurements on two different houses in this region. The results revealed that the thermal effectiveness of these vernacular houses depends on the interaction of all their vernacular passive strategies from architectural to urban scale.
Abstract
The urban structure of Dombóvár has been transformed in recent centuries, and the protected buildings that once defined the town center, have been relegated to the periphery. Today, despite its rich architectural heritage, the Kakasdomb district is an area at risk of segregation. The key to the integration of the district into the existing urban tissue is the utilization of the protected buildings of the area including the former synagogue building. This paper examines the possibilities for the reuse of the synagogue based on the town development strategy and the perceptions of the remaining Jewish community, and the systematic modification of the settlement structure, together with the possibilities for the integration of the neighborhood.
Abstract
In this work, the actual aspect of the creation of comfortable climatic conditions indoors due to the compressed swirl compact air streams at an alternating mode is considered. The purpose of this article is the mathematical modeling of the swirl compact air jet and getting of the analytical equations for calculation air distribution in a premise at the condition of dynamic indoor climate in compressed conditions of a premise for providing comfort people well-being. A mathematical model of air supply with the swirl compact air jets in the room has been developed. A combinatorial-logarithmic method for the graphs approximating the dependence of the relative transverse velocity of a swirl compact air jet and the correction coefficient for compression and swirling on the relative transverse coordinate has been developed.
Abstract
For the final quality of the part, metal forming trends are depending on improvements of friction and tribology. As a consequence, there is a trend in which tribology and friction are becoming increasingly important for correctly replicating the forming simulation of those parts. The objective of this work was to improve the forming simulation of an automotive shell part on AutoForm. The part was provided by a vehicle industry supplier. Enhanced Coulomb models consider a change on friction coefficient due to different factors, better approximating the description of friction to reality. For the current study, pressure and velocity dependent friction models were chosen as long as the combination of both. The virtual tribology was simulated using the software TriboForm. Velocity dependent friction model and the virtual tribology have shown similar results with expected lower coefficients of friction.
Abstract
Nowadays, due to savings requirements, the heights of floor systems in multi-story buildings are reduced. To ensure passage of installation within a floor depth, a solution considering web openings is usually adopted in steel-concrete composite structures. Owing to the presence of web openings, the structural performance of a bearing member is affected not only in the final stage but also during the construction. Hence, the main purpose of this research is to evaluate the impact of web openings on the lateral-torsional buckling resistance of the steel part of composite girder in the erection stage. Comparison of lateral-torsional resistance of the steel girders with web openings derived by the analytical approach with results obtained by numerical model is presented and discussed.
Abstract
Vehicle manufacturing is an industry in which the technologies used by Industry 4.0 and their evolution can best be traced. Digitalization-robotization is paramount to the technical methods used in the Fourth Industrial Revolution. The question is how close a correlation between productivity and digitalization robotics in vehicle production is in the Member States of the European Union. I perform the relationship between the two variables by correlation calculation. Then I classify the member states according to the closeness of the relationship between the two variables using the method of hierarchical cluster analysis. Empirical results show a robust relationship, with the highest per capita production value in those Member States with the highest degree of digitalization-robotization in vehicle production. In conclusion, the countries in Central and Eastern Europe and the end of the productivity rankings need to increase the degree of digitalization of their vehicle production to increase their productivity and competitiveness.
Abstract
The work is devoted to study of thermal efficiency of heating convectors with aluminum ribbing to ensure comfortable indoor conditions. The purpose of this paper is to evaluate theoretically and experimentally the thermal efficiency of convector-type heaters with aluminum ribbing, to implement numerical simulation and to obtain dependencies for determination of thermal characteristics of convector-type heaters with aluminum ribbing, ensuring of a proper both indoor climate in the premise and energy saving. A nomogram of interdependence between heat amount, heat carrying medium flow rate, the initial and final temperatures was created. Heat quantity increases with increasing heat carrying medium flow rate, the inlet temperature and decreases with increasing of the exit temperature.
Abstract
With the gradual improvement of urban construction, more and more experts and the public realized that the speed of urban development be reasonable, which caused urban regeneration to turn to a new-minded “urban micro-regeneration”. “Micro-regeneration” is an extension of the concept to the direction of urban construction. The concept of micro-regeneration was first applied to the regeneration of individual buildings in the old city. The research on the intervention of public art in urban micro-regeneration is still in its infancy in China. Based on practice, this paper explores the possibility of public art's intervention in urban micro-regeneration.
Abstract
Dynamical modeling in water supply and treatment and wastewater treatment helps to understand the flow in the networks. Therefore, it is important to incorporate dynamic modeling into the design and assessment processes and operation for the future of urban drainage systems.
The aim of this paper was using a mathematical model to analyze the functionality of combined sewer networks during a precipitation event on 13 October 2020. The analysis was performed based on the results from the assessment of the hydraulic capacity of the sewer network using the MOUSE model in the MIKE URBAN software. This study results that the evaluated sewer network does not fulfill his purpose during heavy rainfall events.
Abstract
This paper represents a noise pollution survey in Durrës city, Albania. There are four survey areas defined: A (central), B (industrial), C (suburban), D (residential + beach) during two intervals times (morning and night).
The equipment used for noise measurement was Testo 816-1 where data were categorized according to levels L eq , L min, L max, and L ave . The contrast of L eq levels versus the standard levels based on the 2002/49/EC Directive showed that L eq levels overcome the limits.
In conclusion, the high equivalent noise level mostly has been during the morning with L eq > 55 dB, which brings serious health concerns to residents near these regions. At night in most of these stations, the equivalent noise levels resulted higher than 45 dB, which is above EU directive and Albanian standards. The survey results will also serve local institutions to manage the situation and to address problems at the governmental level.
Evolution and Cyclicality in Rural Tourism
Experience of Tourism Development in the Inner-Őrség in the Light of Statistical Data
Fejlődés és ciklikusság a vidéki turizmusban
A Belső-Őrség turizmusfejlődésének tapasztalatai a statisztikai adatok tükrében
Tourism is one of the fastest-growing economic sectors in the world, and any settlement that can harness and promote its potential can benefit from it. It is not only the prerogative of cities but can also make a significant contribution to the survival and development of smaller settlements.
The development of tourism in a given area is not a sudden, rapid process, but usually takes place over several decades, through cyclical phases. Our research is based on the different hypothetical models of the stages of tourism developed by Noronha (1977) and Butler (1980), the applicability of which was examined in rural areas through the example of the Inner-Őrség. Nowadays Őrség (Guard’s Country) is one of the most popular tourist destinations in Hungary, where the small settlements of the area have built on their natural, architectural and cultural assets and they have been able to exploit their potential by using the right marketing techniques. The villages of the Inner-Őrség have developed at different rates since their discovery as tourist destinations, and depending on their role in the settlement network, their accessibility and tourist values, the different phases of tourism development took place at different speeds in their territory. Therefore, the intensity and impact of tourism varies in each village despite the strong interaction between them.
In the present study, we seek to identify the trends and characteristics of the development of tourism in the examined area by using the results of the available statistical data, in order to obtain a more accurate picture of the role of tourism in the settlements concerned.
Abstract
Ancient city is an important carrier of urban historical landscape development, with the development of urbanization, the protection and development of ancient city landscape has become a hot topic. Taking Taierzhuang ancient city in Shandong province and Quanzhou ancient city in Fujian province as investigated examples. This paper discusses the different characteristics and problems of the derivation landscape reproduction and “airborne” landscape reproduction. It further discusses the necessity of historical landscape reproduction and the complexity of landscape reproduction.
Abstract
The task scheduling is to map and arrange the execution of tasks on resources to optimize one or more efficient criteria. This paper tries to provide an improved model for scheduling workflow tasks of the cloud, which simultaneously considers three aspects of optimizing: makespan time, resource utilization, and scheduling length ratio. The model combines the non-dominated sorting genetic algorithm and the harmony search approach to achieve these goals. Harmony search algorithm attempts to perform a local search around the best solutions in each repetition of the algorithm to prevent it from getting stuck in the local optimal. The results on the four Cybershake, Epigenomics, Inspiral, and Montage datasets depict that the suggested algorithm is more efficient for all three criteria.
Abstract
Identification of online hate is the prime concern for natural language processing researchers; social media has augmented this menace by providing a virtual platform for online harassment. This study identifies online harassment using the trolling aggression and cyber-bullying dataset from shared tasks workshop. This work concentrates on extreme pre-processing and ensemble approach for model building; this study also considers the existing algorithms like the random forest, logistic regression, multinomial Naïve Bayes. Logistic regression proves to be more efficient with the highest accuracy of 57.91%. Ensemble bidirectional encoder representation from transformers showed promising results with 62% precision, which is better than most existing models.
Abstract
Timber is a widely used material in construction. The moisture content has a significant impact on the mechanical and physical properties of it. This paper studies how the moisture content values are directly connected to the climate conditions, especially temperature and relative humidity, by measuring these factors for a non-renovated historical timber roof for a one-year period, combined with meteorological data for Pécs since 1901. The fluctuation in moisture content values created instability in the water content of the structural elements due to absorption and release of water in order to reach the equivalent moisture content point. This process led to continuous volume increase-decrease of the timber, thus to formation of cracks, discoloration and harmful fungi development.
Abstract
The research simulates the precipitation-runoff process in an urbanized area. The Slovak University of Technology in Bratislava, the Faculty of Civil Engineering, is chosen as the locality of interest. The construction of a mathematical model of the area of interest and the existing sewer network was used the storm-water management model software. The rain type was stimulated by the block type of rain and real precipitation events. The study results showed that some parts of the existing sewer network are overloaded already during a lower intensity rain event. Based on the results achieved in the future, it is considered with the proposal of measures for rainwater management.
Abstract
The comparison of Mono and Multi Repository structures is a highly debated topic in the software development field. Despite the choice of repository structure is the first main step in development; so far, this comparison has only been made on a small or local scale. Here, Mono and Multi Repository structures have been compared from different aspects using thousands of projects.
First, an algorithm shared for collecting and identifying Mono and Multi Repository projects and save them into the database. Database was used for making different comparisons for example the usage intensity of both structure types over time, the developer's preference over structure type based on their country and so on. Also, all these comparisons have been made according to the team size and development period for each repository structure.
Abstract
Two different tire configurations consisting of a dual tire and a super single wide tire having different range and distribution of contact pressures have been analyzed. Along with the effect of speed on development of pavement damage at speeds of 5, 50 and 80 km h−1 under zero and uniform wander modes. Results show that at super slow speeds of 5 km h−1, at dual wheel moving at zero wander mode, decrease in fatigue life of the pavement is 3.5 years, which is 1.45 times more than the dual wheel moving at uniform wander and 3.4 times more than wide tire moving at uniform wander mode. The difference between fatigue damage at different lateral wander modes is prominent at speeds greater than 50 km h−1. A wide tire performs better than the dual wheel under zero wander configurations.
