scholarly journals NOISE PROTECTIVE SCREENS AS MEANS OF OPTIMIZATION OF NOISE MODE

2021 ◽  
Vol 1 (161) ◽  
pp. 296-300
Author(s):  
V. Abrakitov ◽  
O. Skrypnyk ◽  
S. Nesterenko

One of factors that negatively influence on an environment is noise. Noise can negatively influence on a health man. Determination of effective measures of noise rotection of workplaces became the aim of our researches. Certainly, that the most more showy measure are the so-called screens. It is significant, it is the most effective entrance of the city. They became the theme of our research. By us were the studied systems of classifications of screens. They are divided depending on such parameters: on the method of action; after a geometrical form; after an outline in a plan; after the method of arranging, on material. Defining advantages or lacks of the two following charts is impossible (id est there is not sense). They are accepted as given. Consideration of frequent is carried out from the source of noise, that it is located in a narrow corridor between an abat-voix and other obstacle. For simplification it is possible to accept the location of source of noise directly on the surface of soil: the point of source of noise is successfully approximated by a location directly on the surface of soil; distance between this surface and very had an actual mestome to the locations, easily yields to the calculation, i always can be a little rather entered in a calculation as an insignificant additional correction. If we consider reflections not from the left, but from the right screen, absolutely adequate formulas can be derived, in which (taking into account the mirror symmetry of geometric construction), the corresponding indexes are simply replaced... At some stage, the multiple reflection stops. This happens when the height of one of the reflection points exaggerates the height of one of the screens. The sound beam has nothing more to reflect, and it enters the space (to the sky). Therefore, when describing each reflection, we provide boundary conditions for its happening. A voice ray falls on a screen, and reflected from a that screen under the same corner q. It is suggested to "delete" a voice ray by us, directing him to sky above an oppositely stand-up screen after the first beating back.

Author(s):  
А.В. Гридневский

Строительство на правобережье реки Дон в г. Ростове-на-Дону сопряжено с риском подтопления и высачивания подземных вод. Для обеспечения гидрогеологических прогнозов разработана численная гидрогеологическая модель склона речной долины. Она характеризует геологическую структуру, граничные условия подземного потока и параметры водопроницаемости грунтов. Идентификация гидрогеологических параметров и интенсивности влияния граничных условий выполнены методом многовариантного численного моделирования. Оценены притоки воды к дренажным сооружениям их зависимость от техногенной инфильтрации. Определены параметры неглубоко залегающих скифских глин, при которых они способствуют локальному подъему уровня подземных вод. В статье анализируются гидродинамические процессы в приустьевой части реки Темерник правобережья Дона с целью детализации представлений о гидрогеологической структуре массива грунтов, оценки параметров фильтрации и граничных условий. Полученные результаты использованы для определения водопритока в зоне высачивания к дренажным сооружениям, сопровождающим строительство. Применяемый подход основан на численном гидрогеологическом моделировании, системно учитывающем параметры геофильтрации в их взаимосвязи. Он позволяет учесть факторы геоэкологического риска для разработки эффективных решений в борьбе с подтоплением. Самыми древними отложениями, определяющими инженерно-геологические условия города, являются морские глины нижне-сарматского яруса (N1s1) мощностью 10–15 м, служащие региональным водоупором. Глины перекрыты комплексом (15÷20 м) водопроницаемых трещиноватых известняков сарматского яруса (N1s2), переслаивающихся известняков и песков мэотического (N1m) и понтического ярусов (N1p). Завершается  толща красно-бурыми плотными отложениями (5÷15 м) скифских глин (QЕsk). Строительство в зоне высачивания создает подпор подземных вод и порождает риск ухудшения геотехнических условий эксплуатации зданий и сооружений: подтопление заглубленных конструкций, смещение по склону  водонасыщенного песчано-глинистого грунта. Construction on the right bank of the river of Don in Rostov-on-Don is associated with a risk of flooding and seepage. To provide hydrogeological forecasts, a numerical hydrogeological model of the river valley slope has been developed. It characterizes the geological structure, the boundary conditions of the underground flow, and the parameters of the permeability of the soils. The identification of hydrogeological parameters and the intensity of the influence of boundary conditions are performed by the method of multivariate numerical simulation. Inflows of water to drainage structures are estimated, their dependence on man-caused infiltration. According to calculations, shallow-lying Scythian clays provide a local rise of the groundwater level. The article analyzes the hydrodynamic processes in the mouth of the Temernik river on the right bank of the Don with the aim of detailing the hydrogeological structure of the soil mass and estimating filtration parameters and boundary conditions. The obtained results were used to determine the water inflow in the seepage area to the drainage facilities accompanying the construction. The mentioned approach is based on numerical hydrogeological modeling, systematically taking into account the parameters of geological filtration in their relationship. It allows taking into account the factors of geoecological risk for the development of effective solutions to protect against flooding. The oldest sediments that determine the engineering and geological conditions of the city are the sea clays of the Lower Sarmatian layer (N1s1) with a thickness of 10–15 m, serving as a regional aquifer. Clays are covered with a complex (15–20 m) of permeable fractured limestones of the Sarmatian layer (N1s2), interbedded limestones and sands of the Meotian (N1m) and Pontian layers (N1p). The stratum ends with red-brown dense sediments (5–15 m) of Scythian clays (QЕsk). Construction in the outflow zone creates a groundwater ascent and generates the risk of deterioration of the geotechnical conditions for the operation of buildings and structures: flooding of buried structures, displacement along the slope of water-saturated sandy-clay soil.


2020 ◽  
pp. 147-170
Author(s):  
Alejandra Vega Palma ◽  

This article discusses the production conditions of colonial Potosí iconography, particularly that elaborated by architects who knew the Villa Rica first-hand, either as travelers or as residents of the city. At the crossing between the field of visual culture and the reflection on genres and textual typologies, a review of images that emerged from the xvi to the xvii centuries is proposed. Such images depict the fixation of a certain way of seeing. Against the common determination of addressing conventional forms of representation of Potosí and its Cerro Rico, a reiterated encounter with a shared experience of the surrounding space is shown as the reason for the repetition of these images. The result, represented in a double conical profile of Cerro Rico and Huayna Potosí (or little Potosí), and the presence of a small conical hill located to the right of the observer’s vision range, accounts for communication exercises of a shared and familiar experience.


2020 ◽  
Vol 2 (1) ◽  
pp. 22-28
Author(s):  
Pirman Maolana ◽  
Tania Firda Anggraini Maruao ◽  
Asri Hidayani ◽  
Cepi Sandra Wijaya ◽  
Fikri Ardiansyah

Demands for public service innovation are increasingly pressing along with the increasing awareness that the community has the right to be served and the government has an obligation to provide the best service. One of the services provided by the government to the community is population administration services. In this case the researcher examines how the GO-DOK service innovation is applied. This research uses qualitative methods and descriptive approaches. This study uses public service theory and public service innovation. Determination of implementing informants using snowball sampling and user informants using purposive sampling. The latest innovation service presented by the City of Tasikmalaya government in the use of digital-based efforts to facilitate the community, especially in population administration services in the City of Tasikmalaya. With a delivery service developed by the Disdukcapil of Tasikmalaya city.


Author(s):  
Hennadii Karimov ◽  
Antonina Zienina-Bilichenko ◽  
Kateryna Zvonarova

In market conditions, to ensure the economic development of enterprises are forced to constantly monitor and increase the economic efficiency of their activities. The strategy of the enterprises of the electric power industry should provide for the creation of a comprehensive system of measures aimed at achieving promising efficiency parameters. The level of profitability is most affected by the size of production costs, which indicates significant amount production costs, but the technical potential of CHP is not exhausted, which allows to increase the load on existing equipment of enterprise. In addition, the market position is not clearly assigned to the enterprise, which allows for the development of a new market niche in the form of the left bank of the city. The results of the restoration of the heating system on the right and left banks will allow the enterprise to become an integral part of the city's infrastructure.


2019 ◽  
Vol 4 (2) ◽  
Author(s):  
Raka Maulana ◽  
Yulianti Pratama ◽  
Lina Apriyanti

<p>Some areas in the city of Bandung is an area that dilitasi by the flow of the river, to prevent the introduction of garbage into the river basin is necessary to note the waste management systems in residential areas along the river. Cidurian river has a length of 24.86 Km along the river flow. Consists of the city of Bandung and Bandung regency. Administrative regions Cidurian River past eight (8) districts, from the region in the District Kiaracondong precisely Village Babakan Babakan Sari and Surabaya populous and the most densely populated. Thus, there should be community-based waste management in the form of a reduction in resources to prevent potential entry of waste into the river basin. Planning waste reduction will be divided into two, namely the reduction of inorganic waste with waste bank then the reduction of organic waste with absorption holes biopori, and bio reactor mini determination of the reduction is determined by the results of the analysis of the sampling covers the composition and garbage, then the result of the measurement characteristics test and analysis results questionnaire.</p>


2019 ◽  
Vol 7 (1) ◽  
pp. 9-20
Author(s):  
Inna Yeung

Choice of profession is a social phenomenon that every person has to face in life. Numerous studies convince us that not only the well-being of a person depends on the chosen work, but also his attitude to himself and life in general, therefore, the right and timely professional choice is very important. Research about factors of career self-determination of students of higher education institutions in Ukraine shows that self-determination is an important factor in the socialization of young person, and the factors that determine students' career choices become an actual problem of nowadays. The present study involved full-time and part-time students of Institute of Philology and Mass Communications of Open International University of Human Development "Ukraine" in order to examine the factors of career self-determination of students of higher education institutions (N=189). Diagnostic factors of career self-determination of students studying in the third and fourth year were carried out using the author's questionnaire. Processing of obtained data was carried out using the Excel 2010 program; factorial and comparative analysis were applied. Results of the study showed that initial stage of career self-determination falls down on the third and fourth studying year at the university, when an image of future career and career orientations begin to form. At the same time, the content of career self-determination in this period is contradictory and uncertain, therefore, the implementation of pedagogical support of this process among students is effective.


2018 ◽  
Vol 19 (3) ◽  
pp. 19-24
Author(s):  
A. S. Povzun ◽  
V. I. Mazurov

The purpose of the work was to study the nosological structure of rheumatologic patients hospitalized  in emergency hospitals. The analysis of the obtained distribution and its comparison with the structure  of patients at the Scientific Research Institute of emergency care named after I. I. Djanelidze and the City  Rheumatology Center were done. Determination of the current structure of hospitalization of rheumatologic  patients can serve as a basis of its forecasting for the subsequent periods.


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