scholarly journals Impact of the Operation of a Tri-band Hydraulic Compactor on the Technical Condition of a Residential Building

2019 ◽  
Vol 9 (2) ◽  
pp. 336 ◽  
Author(s):  
Krzysztof R. Czech ◽  
Wojciech Gosk
Keyword(s):  
Residential Building ◽  
Technical Condition ◽  
Close Proximity ◽  
Foundation Wall ◽  
Surface Vibrations ◽  
European Standards ◽  
Particle Velocities ◽  
Component Particle ◽  
New Generation ◽  
The Impact

The study investigates the surface vibrations generated by a new generation, tri-band hydraulic compactor type V8 from Maschinentechnik Schrode AG (MTS), and a reversible plate compactor type DPU 6055 from Wacker Neuson in close proximity to a low-rise residential building. Compaction works were carried out in three stages, at distances: 15 m, 10 m, and 5 m from the building, and at three depths: 0.4 m, 1.2 m, and 1.8–2.0 m. The research was conducted at one measurement point, located on the outer foundation wall of the building, and at three measurement points located on the ground at distances of 1.25–7.5 m from the building. The study analyses the distribution of peak component particle accelerations at the ground, and peak component particle velocities at the foundation wall of the building as a function of the distance of compactors from the building and the depth of compaction works, as well as the mode of work of hydraulic compactor type V8 from MTS. The study contains the comparison of the permissible vibration levels that are recommended by selected European standards (DIN, BS, VSS, and PL) and an approximate assessment of the impact of vibrations on the technical condition of the residential building.

scholarly journals Influence of Age on the Technical Wear of Tenement Houses

2020 ◽  
Vol 11 (1) ◽  
pp. 297
Author(s):  
Jarosław Konior ◽  
Marek Sawicki ◽  
Mariusz Szóstak
Keyword(s):  
Residential Buildings ◽  
Residential Building ◽  
Numerical Approach ◽  
Technical Condition ◽  
Visual Methods ◽  
Secondary Importance ◽  
Building Maintenance ◽  
Technical Maintenance ◽  
Traditional Construction ◽  
The Impact

The research presented in the article, which includes methods, models, and conclusions, contains synthetic and analytical model solutions concerning the problems of the technical maintenance and wear of residential buildings with a traditional construction. The cause and effect relationships between the occurrence of damage in the elements of tenement houses (treated as proof of their maintenance conditions), and the size of the technical wear of these elements were determined using a representative and purposefully selected sample of 102 residential buildings erected during the second half of the nineteenth and early twentieth centuries in Wroclaw’s “Downtown” district. Quantitative damage analysis, which was carried out using empirical (visual) methods of assessing the technical condition of a building, indicates the type and size of damage to the building’s elements that are characteristic for the relevant maintenance conditions. Research concerning the cause–effect relationships (“damage–technical wear”) in observed states allows for a numerical approach to the impact of building maintenance conditions on the degree of the technical wear of its components. The maintenance and exploitation conditions determine the degree of the technical wear of the elements of an old residential building. The exploitation condition of these buildings is manifested by damage to elements caused by water and moisture penetration, which is especially important for poorly maintained buildings. The article shows that the age of the elements of an old residential building with a traditional construction is of secondary importance in the process of the intensity of losing its serviceability value. It was calculated that no more than 30% of the damage of building components is explained by the passage of time, and it is therefore not age that determines the course of the technical wear of the elements of the analyzed tenement houses.

scholarly journals Analysis of the dynamic characteristics of the mixed structure building using mobile seismic station of new generation

2019 ◽  
Author(s):  
Дж.К. Карапетян ◽  
О.Ю. Айрапетян ◽  
Д.А. Мхитарян
Keyword(s):  
Dynamic Characteristics ◽  
Seismic Station ◽  
Complex Structure ◽  
Residential Building ◽  
Technical Condition ◽  
Similar Data ◽  
Seismic Sensors ◽  
Instrumental Observations ◽  
Short Time ◽  
New Generation

В статье рассматриваются вопросы изучения поведения зданий и сооружений в натурных условиях. Статья посвящена теме исследования динамических характеристик жилого здания с неполным каркасом. Авторы предложили осуществлять изучение поведения зданий с помощью мобильной сейсмостанции нового поколения, состоящей из трех сейсмоприемников – типа модернизированных сейсмодатчиков СМ-3, логгер, производства ИГИС НАН РА, оснащённых беспроводной сетью, что обеспечивает связь с ноутбуком. Приводятся результаты исследований динамических характеристик жилого здания комплексной конструкции с помощью специальной мобильной сейсмостанции, разработанной в ИГИС НАН РА. В процессе эксплуатации зданий их техническое состояние изменяется. Это выражается изменением количественных характеристик работоспособности (надёжности), в частности, динамических характеристик зданий. Нами была поставлена задача: исследование динамических характеристик жилого здания комплексной конструкции и проверка его технического состояния, сравнение динамических характеристик с данными, полученными в ранее проведённых работах], а также сопоставление динамических характеристик грунтов их оснований. Замер колебаний осуществлен с помощью микросейсм. При таких измерениях необходимо избегать влияния движения транспортных средств и других постоянных источников генерации колебаний грунтов и зданий. Поэтому измерения были произведены в ночное время для того, чтобы колебания грунта и здания были вызваны только естественными микросейсмами. Одним из важнейших преимуществ микросейсмических исследований является то, что количество микроимпульсов, регистрируемых на поверхности Земли и на зданиях и сооружениях, чрезвычайно велико, поэтому имеется возможность за короткие сроки без особых затрат получать большое количество информации для спектрального анализа. Эта информация позволяет решать ряд важных задач научного и практического характера. Проведен сравнительный анализ полученных путем инструментальных наблюдений динамических характеристик здания и имевшихся ранее аналогичных данных. Выявлены закономерности изменения динамических характеристик в зависимости от длительности эксплуатации здания, в результате чего произведена оценка его фактического технического состояния. The article deals with the study of the behavior of buildings and structures in natural conditions. The article is devoted to the study of the dynamic characteristics of a residential building with an incomplete frame. The authors proposed to study the behavior of buildings using a mobile seismic station of a new generation consisting of three seismic receivers, such as the upgraded SM-3 seismic sensors, a logger, produced by IGES NAS RA, equipped with a wireless network that provides communication with a laptop. The article presents the results of studies of the dynamic characteristics of a residential building of a composite structure with the help of a special mobile seismic station developed at IGES NAS RA. During the operation of buildings, their technical condition changes. This is expressed by a change in the quantitative characteristics of performance (reliability), in particular, the dynamic characteristics of buildings. We set the task: to study the dynamic characteristics of a residential building with a complex structure and to check its technical condition, to compare the dynamic characteristics with data obtained in earlier works, and also to compare the dynamic characteristics of the grounds of their bases. Measurement of vibrations were carried out with the help of microseisms. In such measurements it is necessary to avoid the influence of the movement of vehicles and other permanent sources of generation of vibrations of soils and buildings. Therefore, measurements were made at night to ensure that the vibrations of the soil and buildings were caused only by natural microseisms. One of the most important advantages of microseismic research is that the number of micropulses recorded on the surface of the Earth and on buildings and structures is extremely large, so it is possible to obtain a large amount of information for spectral analysis in a short time without much expense. This information allows you solving a number of important tasks of a scientific and practical nature. A comparative analysis of the dynamic characteristics of the building obtained by instrumental observations and previously available similar data was carried out. The regularities of changes in the dynamic characteristics depending on the duration of the building's operation were revealed, as a result of which an assessment of its actual technical condition was made.

scholarly journals Bayes Conditional Probability of Fuzzy Damage and Technical Wear of Residential Buildings

2021 ◽  
Vol 11 (6) ◽  
pp. 2518
Author(s):  
Jarosław Konior ◽  
Tomasz Stachoń
Keyword(s):  
Conditional Probability ◽  
Residential Buildings ◽  
Residential Building ◽  
Quantitative Model ◽  
Technical Condition ◽  
Expert Assessment ◽  
Wear Process ◽  
Building Maintenance ◽  
Traditional Construction ◽  
The Impact

The purpose of the research presented in the article is to identify the impact of the processes associated with the broadly understood maintenance of old residential buildings with a traditional construction on the size and intensity of the wear of their elements. The goal was achieved by analyzing the symptoms of the technical wear process, which involved the understanding of the mechanism of the occurrence of the phenomenon of damage, and the identification of the size and intensity of the damage to the elements of the evaluated buildings. The consequence of systematizing the most important processes that influence the loss of functional properties of residential buildings was the creation of the authors’ own qualitative model and its transformation into a quantitative model. This, in turn, enabled a multi-criteria quantitative analysis of the cause and effect phenomena—“damage-technical wear”—of the most important elements of downtown tenement buildings to be carried out in fuzzy conditions, i.e., uncertainty concerning the occurrence of damage and the wear process. The following key question was answered in the subjective expert assessment of the technical condition of an evaluated residential building: what is the probability of the wear of an element, which may be more or less correlated with its average maintenance conditions, or more simply, what is the probability that the element is more or less (approximately) worn? It has been proven that the conditional probability of the technical wear of an element in relation to its damage increases with the deterioration of the maintenance conditions of the building, and this increase is very regular, even in the case of different building elements. This probability is characterized by a low standard deviation and a narrow range of the dispersion of results in the case of various elements with regards to each of the considered building maintenance conditions.

Overcoming stereotypes of renewable energy

2019 ◽  
pp. 124-136
Author(s):  
Victor D. Gazman
Keyword(s):  
Renewable Energy ◽  
Empirical Analysis ◽  
Energy Generation ◽  
New Paradigm ◽  
Financial Instrument ◽  
Promising Direction ◽  
Investment Projects ◽  
Power Stations ◽  
New Generation ◽  
The Impact

The article considers prerequisites for the formation of a new paradigm in the energy sector. The factors that may affect the imminent change of leadership among the energy generation are analyzed. The variability of the projects of creation and functioning of power stations is examined. The focus is made on problematic aspects of the new generation, especially, storage and supply of energy, achieving a system of parity that ensures balance in pricing generations. The author substantiates the principles of forming system of parities arising when comparing traditional and new generations. The article presents the results of an empirical analysis of the 215 projects for the construction of facilities for renewable energy. The significance and direction of the impact of these factors on the growth in investment volumes of transactions are determined. The author considers leasing as an effective financial instrument for overcoming stereotypes of renewable energy and as a promising direction for accelerated implementation of investment projects.

scholarly journals The Impact of Initial Conditions in N-Body Simulations of Debris Discs

2015 ◽  
Vol 32 ◽  
Author(s):  
E. Thilliez ◽  
S. T. Maddison
Keyword(s):  
Numerical Simulations ◽  
Initial Conditions ◽  
Parent Body ◽  
Dust Trapping ◽  
Physical Context ◽  
Disc Width ◽  
Wide Range ◽  
Belt Width ◽  
New Generation ◽  
The Impact

AbstractNumerical simulations are a crucial tool to understand the relationship between debris discs and planetary companions. As debris disc observations are now reaching unprecedented levels of precision over a wide range of wavelengths, an appropriate level of accuracy and consistency is required in numerical simulations to confidently interpret this new generation of observations. However, simulations throughout the literature have been conducted with various initial conditions often with little or no justification. In this paper, we aim to study the dependence on the initial conditions of N-body simulations modelling the interaction between a massive and eccentric planet on an exterior debris disc. To achieve this, we first classify three broad approaches used in the literature and provide some physical context for when each category should be used. We then run a series of N-body simulations, that include radiation forces acting on small grains, with varying initial conditions across the three categories. We test the influence of the initial parent body belt width, eccentricity, and alignment with the planet on the resulting debris disc structure and compare the final peak emission location, disc width and offset of synthetic disc images produced with a radiative transfer code. We also track the evolution of the forced eccentricity of the dust grains induced by the planet, as well as resonance dust trapping. We find that an initially broad parent body belt always results in a broader debris disc than an initially narrow parent body belt. While simulations with a parent body belt with low initial eccentricity (e ~ 0) and high initial eccentricity (0 < e < 0.3) resulted in similar broad discs, we find that purely secular forced initial conditions, where the initial disc eccentricity is set to the forced value and the disc is aligned with the planet, always result in a narrower disc. We conclude that broad debris discs can be modelled by using either a dynamically cold or dynamically warm parent belt, while in contrast eccentric narrow debris rings are reproduced using a secularly forced parent body belt.

scholarly journals Measuring Key Quality Indicators in Cloud Gaming: Framework and Assessment Over Wireless Networks

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1387
Author(s):  
Oswaldo Sebastian Peñaherrera-Pulla ◽  
Carlos Baena ◽  
Sergio Fortes ◽  
Eduardo Baena ◽  
Raquel Barco
Keyword(s):  
Communication Networks ◽  
Mobile Networks ◽  
Video Game ◽  
Know How ◽  
Fifth Generation ◽  
New Generation ◽  
Graphics Rendering ◽  
The Impact

Cloud Gaming is a cutting-edge paradigm in the video game provision where the graphics rendering and logic are computed in the cloud. This allows a user’s thin client systems with much more limited capabilities to offer a comparable experience with traditional local and online gaming but using reduced hardware requirements. In contrast, this approach stresses the communication networks between the client and the cloud. In this context, it is necessary to know how to configure the network in order to provide service with the best quality. To that end, the present work defines a novel framework for Cloud Gaming performance evaluation. This system is implemented in a real testbed and evaluates the Cloud Gaming approach for different transport networks (Ethernet, WiFi, and LTE (Long Term Evolution)) and scenarios, automating the acquisition of the gaming metrics. From this, the impact on the overall gaming experience is analyzed identifying the main parameters involved in its performance. Hence, the future lines for Cloud Gaming QoE-based (Quality of Experience) optimization are established, this way being of configuration, a trendy paradigm in the new-generation networks, such as 4G and 5G (Fourth and Fifth Generation of Mobile Networks).

“The New Generation”: Mental Hygiene and the Portrayals of Children by the National Film Board of Canada, 1946–1967

2003 ◽  
Vol 43 (4) ◽  
pp. 540-570 ◽  
Author(s):  
Brian J. Low
Keyword(s):  
Social Relations ◽  
Mental Hygiene ◽  
Social Attitudes ◽  
Child Rearing ◽  
Mass Psychology ◽  
National Film Board ◽  
The Mind ◽  
Schooling Practices ◽  
New Generation ◽  
The Impact

That is the achievement of the psychologists. In our own society they are very kind, and do everything for our own good. The tales of what they do elsewhere are rather terrifying.—Hilda NeatbySo Little for the Mind (1953)Documenting the impact of the mental hygiene movement has been problematical for historians. The hygienists operated in the realm of mass psychology and social relations, within the “mentalities” of children—particularly of the postwar generation—who have left little observable evidence of changing social attitudes and relationships resulting from changes to mass child-rearing and schooling practices. The influence of the movement upon parenting literature and curricular documents may be readily observed in postwar baby books, magazines, newspapers, radio scripts, and films, as well as in the changing language of educational theorists and practitioners. But as to seeing the actual effects of this material upon any society, documentary evidence has remained elusive.

scholarly journals THE IMPACT OF TRADE LIBERALIZATION BETWEEN UKRAINE AND EU ON TRADE AND INVESTMENT

2021 ◽  
Author(s):  
Volodymyr Olefir ◽  
Keyword(s):  
Foreign Direct Investment ◽  
Trade Liberalization ◽  
Direct Investment ◽  
Free Trade Area ◽  
Comparison Method ◽  
Trade Area ◽  
European Standards ◽  
The Government ◽  
The Impact ◽  
The Eu

The benefits and costs of the implementation of the Deep and Comprehensive Free Trade Area (DCFTA) between Ukraine and the EU have been studied. The study aimed to find out to what extent the implementation of DCFTA has helped increase exports and attract foreign direct investment into Ukraine’s economy. A comparison method was used to conduct the study. The period of implementation of the DCFTA (2016-2020) was compared with the period before the implementation of the DCFTA (2010- 2014). Due to trade liberalization, exports of Ukrainian goods to the EU and imports of goods from the EU to Ukraine have increased. Trade liberalization has not contributed to further attracting foreign direct investment from the EU to Ukraine’s economy. The urgent task of the Government of Ukraine is to create a business regulatory environment according to European standards and protect foreign investment.

scholarly journals China's Rural Migrant Workers, the State, and Labor Politics

2017 ◽  
Author(s):  
Jenny Chan ◽  
Mark Selden
Keyword(s):  
Migrant Workers ◽  
The State ◽  
Labor Politics ◽  
Rural Migrant ◽  
Industrial Labor ◽  
Class Power ◽  
The Individual ◽  
New Generation ◽  
The Impact ◽  
Rural Migrant Workers

The proletarianization of rural migrants is distinctive to contemporary China's development model, in which the state has fostered the growth of a “semi-proletariat” numbering more than 200 million to fuel labor-intensive industries and urbanization. Drawing on fieldwork in Guangdong and Sichuan provinces between 2010 and 2014, supplemented with scholarly studies and government surveys, the authors analyze the precarity and the individual and collective struggles of a new generation of rural migrant workers. They present an analysis of high and growing levels of labor conflict at a time when the previous domination of state enterprises has given way to the predominance of migrant workers as the core of an expanding industrial labor force. In particular, the authors assess the significance of the growing number of legal and extra-legal actions taken by workers within a framework that highlights the deep contradictions among labor, capital, and the Chinese state. They also discuss the impact of demographic changes and geographic shifts of population and production on the growth of working-class power in the workplace and the marketplace.

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