Estimating the Geotechnical Parameters from CSEM Monitoring Data at the City of 15th May, Egypt

2012 ◽  
Author(s):  
M.A. Atya ◽  
A. Olga Hachay ◽  
Y. Oleg Hachay ◽  
A. El Said Ragab
Keyword(s):  
Monitoring Data ◽  
Geotechnical Parameters ◽  
The City

Research of City Bridge Passed through by Subway Construction in Health Monitoring and Safety Warning

2012 ◽  
Vol 446-449 ◽  
pp. 3087-3091
Author(s):  
Yi Lin Guo ◽  
Jing Liu
Keyword(s):  
Health Monitoring ◽  
Index System ◽  
Considerable Degree ◽  
Monitoring Data ◽  
Safety Warning ◽  
Subway Construction ◽  
Set Up ◽  
The Impact ◽  
The City ◽  
Beijing Subway

With the rapid urban underground rail development, a considerable number of cities bridges face the impact of the MTR. The subway construction through the city bridges lead to a considerable degree of subsidence, deformation, cracks and even a partial collapse, severely affected the bridge function. As the Beijing Subway Line 10 passing through Xinxing Bridge for the study object，the author set up the health monitoring index system of the subway construction through the city bridge, and analyses the monitoring data and the impact for the processing of subway construction across the bridge.

scholarly journals Polluting Emissions in the City of La Paz, Mexico: Emissions Inventory and Monitoring Data

2017 ◽  
Vol 05 (01) ◽  
pp. 54-67
Author(s):  
Alfredo Bermudez-Contreras ◽  
Antonina Ivanova ◽  
Jose Antonio Martinez
Keyword(s):  
Monitoring Data ◽  
La Paz ◽  
Emissions Inventory ◽  
Inventory And Monitoring ◽  
Polluting Emissions ◽  
The City

scholarly journals ESTIMATING HOUSING VACANCY RATE IN QINGDAO CITY WITH NPP-VIIRS NIGHTTIME LIGHT AND GEOGRAPHICAL NATIONAL CONDITIONS MONITORING DATA

2018 ◽  
Vol XLII-3 ◽  
pp. 1319-1326 ◽  
Author(s):  
X. Niu
Keyword(s):  
Population Distribution ◽  
Monitoring Data ◽  
Basic Unit ◽  
Distribution Data ◽  
Vacancy Rate ◽  
Rapid Urbanization ◽  
Nighttime Light ◽  
Qingdao City ◽  
The City ◽  
Housing Vacancy

Accompanying China's rapid urbanization in recent decades, especially in the new millennium, the housing problem has become one of the most important issues. The estimation and analysis of housing vacancy rate (HVR) can assist decision-making in solving this puzzle. It is particularly significant to government departments. This paper proposed a practical model for estimating the HVR in Qingdao city using NPP-VIIRS nighttime light composed data, Geographic National Conditions Monitoring data (GNCMD) and resident population distribution data. The main steps are: Firstly, pre-process the data, and finally forming a series of data sets with 500*500 grid as the basic unit; Secondly, select 400 grids of different types within the city as sample grids for SVM training, and establish a reasonable HVR model; Thirdly, using the model to estimate HVR in Qingdao and employing spatial statistical analysis methods to reveal the spatial differentiation pattern of HVR in this city; Finally test the accuracy of the model with two different methods. The results conclude that HVR in the southeastern coastal area of Qingdao city is relatively low and the low-low clusters distributed in patches. Simultaneously, in other regions it shows the tendency of the low value accumulation in the downtown area and the increasing trend towards the outer suburbs. Meanwhile the suburban and scenery regions by the side of the sea and mountains are likely to be the most vacant part of the city.

THE SPECIFIC COMPOSITION OF WEED PLANTS ON RUDERAL HABITATS ON THE TERRITORY OF VYBORG CITY (LENINGRAD REGION)

2021 ◽  
Vol 21 (3) ◽  
pp. 79-86
Author(s):  
E.N. Mysnik ◽  
Keyword(s):  
Species Composition ◽  
Specific Structure ◽  
Monitoring Data ◽  
Leningrad Region ◽  
Specific Composition ◽  
Weed Plants ◽  
Floristic Analysis ◽  
The City

The purpose of the study was to identify the species composition of weed plants and its features on ruderal habitats on the territory of Vyborg city (Leningrad region, Vyborg district). Materials collected during the route survey of ruderal habitats on the territory of the settlement. Systemati-zation of monitoring data, floristic analysis of species composition, calculation of species occur-rence and assessment of its persistence were carried out. The specific structure is presented by 58 species, 48 genus, 18 families. Groups of 21 dominant and 15 concomitant in occurrence species are allocated. Brought species of weeds were revealed. The interrelation of species compositions of weed plants of segetal habitats of the region and ruderal habitats in the territory of the settlement is shown (17 species, identified on ruderal habitats of the city, are dominant in the fields of the region).

Pollution of Moscow soils with potentially toxic elements: analysis of long-term monitoring data

2020 ◽  
Author(s):  
Natalia Kosheleva ◽  
Angela Tsykhman
Keyword(s):  
Soil Pollution ◽  
Large Scale ◽  
Toxic Elements ◽  
Potentially Toxic Elements ◽  
Monitoring Data ◽  
Scale Transformation ◽  
Industrial Enterprises ◽  
South Eastern ◽  
The City

<p>In megacities, the environment experiences a high anthropogenic press caused by emissions from vehicles and industrial enterprises. Soils are an important component of urban landscapes: they not only accumulate pollutants, but also can be a source of secondary pollution of atmosphere and groundwater. The aim of this work is to analyze the long-term dynamics of soil contamination with potentially toxic elements (PTEs) in Moscow, as Moscow is one of the most polluted cities of Russia.</p><p>The basis for assessing the pollution of soils with As, Cd, Pb, Zn, Hg, Cu, Ni, Mn was the annual monitoring data for 2007-2016, which is obtained by the «Mosecomonitoring» institution and include more than 2000 points of observation. The accumulation of PTEs was characterized by a technogenic concentration factor Kc=Curb/Cb relative to the background Cb, which differed by three physiographic provinces. The total geochemical load on soils was estimated as Zc=∑Kc–(n–1), where n is the number of elements with Kc>1.</p><p>An analysis of the changes in the pollutant content in the soils of Moscow over the decade showed a twofold increase in the accumulation of Cu, Cd, As in the Central District and Cd in the Western and Northwest ones, as well as As in the northeastern part of the city by 1.4–2.3 times. In all districts, a tendency toward a decrease in pollution with Zn, Pb, and Hg was revealed. Compared with 2007, in 2016, the average content of all PTEs in the soils of the city decreased or remained unchanged, except for As.</p><p>The spatial distribution of PTEs in Moscow soils is controlled by the intensity and geochemical specialization of pollution sources, and varies due to soil properties. Central, Eastern, South-Eastern Districts are leading in terms of Cu and Pb pollution. Central and South-Eastern Districts are distinguished by Hg pollution. Central, North-Eastern, South-Eastern, and Southern Districts are most polluted with Zn and Cd. Soils in the southern part of Moscow are most enriched in Ni. High concentrations of As are characterized by soils of light grain-size composition with a high content of organic matter.</p><p>The highest values of the total soil pollution index Zc are characteristic for the Central and South-Eastern Districts, the lowest ones – for the Western and North-Western Districts. Analysis of Zc maps for 2007-2016 showed a decrease in soil pollution. In 2007, uncontaminated soils occupied 35.3% of the city’s area; slightly medium, and heavily polluted – 33%, 22.8% and 9.4% respectively. In 2016, this sequence was as follows: 65%, 22.7%, 11%, and 1.3%. This trend is associated with a decrease in industrial production in Moscow, the removal of harmful industries outside the city and the renovation of enterprises remaining in the capital, as well as with a reduction in emissions from vehicles. Changes in the location of man-made geochemical anomalies in soils reflect leveling in the pollution from vehicles due to the construction of new housing and the large-scale transformation of Moscow regions with a decrease in traffic in the center (Bityukova, Mozgunov, 2019).</p>

scholarly journals The Soundscape of the COVID-19 Lockdown: Barcelona Noise Monitoring Network Case Study

2021 ◽  
Vol 18 (11) ◽  
pp. 5799
Author(s):  
Daniel Bonet-Solà ◽  
Carme Martínez-Suquía ◽  
Rosa Ma Alsina-Pagès ◽  
Pau Bergadà
Keyword(s):  
Monitoring Network ◽  
Monitoring Data ◽  
Small Decrease ◽  
Noise Levels ◽  
Accurate Analysis ◽  
Urban Noise ◽  
Large Cities ◽  
Industrial Zones ◽  
The City

The lockdown social measures in Spain due to COVID-19 caused a significant decrease in urban noise levels, which was observed in most of the large cities. This paper presents an analysis of the noise levels in Barcelona, Spain, by means of an accurate analysis of the most relevant sensors deployed in the Barcelona Noise Monitoring Network. In this work, we present the LAeq levels in eight different locations from January 2020 to June 2020—from Superblocks to industrial zones—including and detailing all stages of the lockdown. Several comparisons were conducted with the monitoring data available from the former years (2019 and 2018—when available). The results of the analysis in Barcelona show a drastic LAeq reduction (−9 dBA), especially in nightlife areas of the city, moderate to high LAeq change (−7 dBA) in commercial and restaurants areas and a small decrease in LAeq (−5 dBA) in dense traffic areas.

scholarly journals Design of the Safe Model of Landfill Dikes for Developing Countries

2020 ◽  
Vol 16 (1) ◽  
pp. 11-20
Author(s):  
Abdelhakim El Maguiri ◽  
Salah Souabi ◽  
Montserrat Zamorano Toro ◽  
Laila Idrissi
Keyword(s):  
Finite Element Method ◽  
Developing Countries ◽  
Factor Of Safety ◽  
Mechanical Characteristics ◽  
Compacted Clay ◽  
The Finite Element Method ◽  
Land Area ◽  
Geotechnical Parameters ◽  
The City ◽  
Safe Model

AbstractThis article is a dimensioning study of the landfill locker dike of the city of Casablanca, where the geotechnical parameters of waste have particular limitations, theses limitation are a common characteristic for most developing countries. Considering the very small available land area in general, the objective is to achieve an optimal dimensioning of the locker to maximize the volume to be buried, while respecting the requirements of stability of the structure; namely, the model whose safety factor will be greater than 1.5. The Factor of Safety (FoS) was calculated by the Finite Element Method (FEM) using “PLAXIS 2D” software. The results show that, for both cases (with and without final cover), FoS, as obtained from both the analysis, show a similar pattern, with the maximum FoS for low inclinations, especially those lower than 15.95°. The critical FoS (< 1), was obtained for slopes strictly greater than 21.80°. The study also demonstrated that the 3.5H 1V model could be considered as the optimal one that satisfies the structural stability requirements (FoS> 1.5) and maximizes the volume to be buried. Nevertheless, the validation of this model is conditioned by a geometric modification (weakening the lateral slope of the landfill, by moving the dikes by 3 m) and the improvement of the mechanical characteristics of the soil of the peripheral dike, through replacing the material with the compacted clay. This model was validated by PLAXIS, which showed that the FoS for the phase preceding the anchoring of the final cover is 1.577, which reaches 1.604 after anchoring.

scholarly journals METHODS FOR ASSESSING THE CITY ATMOSPHERE POLLUTION ACCORDING TO MONITORING DATA

2021 ◽  
Vol 4 (1) ◽  
pp. 159-166
Author(s):  
Anatoly A. Lezhenin ◽  
Vladimir F. Raputa
Keyword(s):  
Atmospheric Pollution ◽  
Observation Point ◽  
Meteorological Station ◽  
Monitoring Data ◽  
Statistical Relationship ◽  
Novosibirsk Region ◽  
Atmosphere Pollution ◽  
The Relationship ◽  
The City ◽  
Control Post

The problem of assessing the city's atmospheric pollution based on monitoring data at stationary observation posts is considered. The results of the research carried out on the example of Iskitim city in the Novosibirsk region are discussed. The analysis of the relationship between the frequency of impurity emissions from dominant sources and the measured concentrations at the stationary observation point of the city for winter periods of time is carried out. The influence of the frequency of winds of different directions on the formation of the level of atmospheric pollution at the control post has been investigated. Taking into account the relative position of the observation point and the main highway of the city, a noticeable contribution of southwestern winds to the increase in benzo (a) pyrene concentrations is shown. The regularities of the formation of atmospheric pollution in calm conditions have been studied. A statistical relationship has been established between the number of calm recorded during the month at the Iskitim meteorological station and the values of benzo(a)pyrene concentrations.

The Design and Implementation of Monitoring Data Warehouse of Ambient Air Quality

2012 ◽  
Vol 424-425 ◽  
pp. 616-620
Author(s):  
Rui Lian Hou ◽  
Ai Mei Dong ◽  
Xiu Fang Li
Keyword(s):  
Air Quality ◽  
Data Warehouse ◽  
Data Model ◽  
Ambient Air ◽  
Quality Monitoring ◽  
Monitoring Data ◽  
Air Quality Monitoring ◽  
Ambient Air Quality ◽  
Modeling Theory ◽  
The City

This paper provides the schemata and arithmetic of the city ambient air quality monitoring data warehouse. And describes the Modeling Theory and Method for Constructing Fact Table of Data Warehouse,;At last The implementation of the CAQMADW prototype validates the feasibility of domain data model

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