A comprehensive analysis on source-distribution-bioaccumulation-exposure risk of metal(loid)s in various vegetables in peri-urban areas of Shenzhen, China

2021 ◽  
pp. 118613
Author(s):  
Beibei Wang ◽  
Fei Gao ◽  
Ning Qin ◽  
Xiaoli Duan ◽  
Yujie Li ◽  
...  
Keyword(s):  
Urban Areas ◽  
Comprehensive Analysis ◽  
Source Distribution ◽  
Exposure Risk

scholarly journals Formation of the organizational-managerial model of renovation of urban territories

2018 ◽  
Vol 196 ◽  
pp. 04029 ◽  
Author(s):  
Dmitriy Topchiy ◽  
Andrey Tokarskiy
Keyword(s):  
Urban Areas ◽  
Urban Infrastructure ◽  
Comprehensive Analysis ◽  
Social Needs ◽  
Added Value ◽  
Special Role ◽  
The Social ◽  
Urban Territories ◽  
Production Areas ◽  
The City

The pace of modern urban development dictates special requirements for the structure of zoning and the designation of the territories of megacities. Formed requirements for the objects of residential and recreational areas, urban infrastructure and communications facilities. A special role in the issue of improving the comfort of the urban environment, is the process of renovation of production areas. One of the main principles of urban planning is the location of production in the outskirts of cities and settlements. However, with the development of urban areas, once located at the disposal of production, are surrounded by residential and administrative-office blocks. This “neighborhood” not only causes discomfort to residents, but also creates an excessive environmental burden on the environment. In addition, the territory of the city, and especially large megacities, have a much higher cadastral value of land, and, therefore, create an additional tax burden on production, as added value to the output. All these elements make the products uncompetitive, especially in comparison with similar products produced outside the metropolitan area. Thus, the process of output of production beyond the city limits is actually cyclical and uninterrupted. Territories that remain after the withdrawal of production facilities are subject to comprehensive analysis, taking into account the social needs of the city, and further renovation.

Multichannel analysis of passive surface waves based on crosscorrelations

Geophysics ◽  
2016 ◽  
Vol 81 (5) ◽  
pp. EN57-EN66 ◽  
Author(s):  
Feng Cheng ◽  
Jianghai Xia ◽  
Yinhe Luo ◽  
Zongbo Xu ◽  
Limin Wang ◽  
...  
Keyword(s):  
Surface Waves ◽  
Urban Areas ◽  
Low Frequency ◽  
Source Distribution ◽  
Virtual Source ◽  
Dispersion Energy ◽  
Shift Measurement ◽  
Seismic Methods ◽  
Multichannel Analysis ◽  
Passive Seismic

Passive seismic methods in highly populated urban areas have gained much attention from geophysics and civil engineering communities because traditional seismic surveys, especially in complex urbanized environments, might be improperly applied. In passive seismic methods, directional noise sources will inevitably bring azimuthal effects and spatial aliasing to dispersion measurements due to the fact that true randomness of ambient noise cannot be achieved in reality. To solve these problems, multichannel analysis of passive surface (MAPS) waves based on long noise sequence crosscorrelations is proposed. We have introduced a hybrid method of seismic interferometry and the roadside passive multichannel analysis of surface waves (MASW) using crosscorrelation to produce common virtual source gathers from 1 h multichannel noise records. Common virtual source gathers are then used to do dispersion analysis with an active scheme based on phase-shift measurement. Synthetic tests demonstrated the advantages of this method with azimuthal adjustment and dispersion imaging for directional noise source distribution. Two field applications were conducted, and results from the roadside passive MASW, MAPS, and spatial autocorrelation method were compared. Our study indicated the superiority of MAPS over the roadside passive MASW on the validity of azimuth detection, feasibility of combining the active MASW and MAPS, and accuracy in determining dispersion energy trends, especially at a relative low-frequency range ([Formula: see text]) in urban areas.

scholarly journals Research on online public participation and online platform construction for historical block protection in the data age

2019 ◽  
Keyword(s):  
Urban Planning ◽  
Public Participation ◽  
Urban Areas ◽  
Urban Culture ◽  
Comprehensive Analysis ◽  
Urban Construction ◽  
Historical Block ◽  
The City ◽  
External Entity ◽  
Complicated Situation

With the implementation of benefit-oriented urban renewal, many historical blocks have lost their identifiability. The historical block is an external entity that is a presentation of urban culture. The disappearance and homogenization of the historical block have directly led to the city losing its place attachment, with the overall identifiability of urban areas becoming weakened. Therefore, it is essential to develop a strategy to protect historical block identifiability in urban planning. Traditional urban planning is dominated by government and developers and is highly dependent on planners’ experience-based judgment but lacks quantitative analysis of public participation. As a result, it is difficult to carry out an objective and comprehensive analysis when facing the complicated situation of historical blocks. The issue of public participation has become an essential issue in the process of urban construction and renewal in China and other developing countries. Based on an analysis of the concept and the characteristics and techniques prevalent in the data age, this article discusses (1) the method and mechanism of public participation in the protection of urban historical blocks and (2) the content and structures of public participation platforms for historical districts. Research indicates that the application of cloud technology and reasonable platform design is the focus of public participation in historical block protection, which can change public participation from passive to active, from “lagged” to “synchronized”.

CONSIDERATION ON THE POSSIBILITY OF SAMARA'S ROAD NETWORK DEVELOPMENT AT THE STAGE OF MASTER PLAN DESIGNING

2015 ◽  
Vol 5 (1) ◽  
pp. 30-34
Author(s):  
Sergey E. LAVROV
Keyword(s):  
Urban Areas ◽  
Road Network ◽  
Comprehensive Analysis ◽  
Economic Conditions ◽  
Master Plan ◽  
Network Development ◽  
Vertical Alignment ◽  
Regulatory Requirements ◽  
Traffic Intersections ◽  
Different Levels

The article views transport availability degradation in Samara. Options for additional throughput capability of transport hubs are presented. Design limitations of road junctions in different levels in urban areas are considered. The possibility of realization of master plan of highwayroad network development in Samara on one line example is analyzed. Comprehensive analysis of mutual combination of horizontal and vertical alignment of adjacent traffic intersections in the particular conditions of their placement on the basis of compliance with regulatory requirements is made. The main problems of realization of master plan of highwayroad network development are formulated. Proposals for the creation of a new mechanism for master plan development, proposals for the specification of plan of continuous motion lines creation are given taking into account real economic conditions.

scholarly journals The Cause and Evolution of Urban Street Vitality under the Time Dimension: Nine Cases of Streets in Nanjing City, China

2018 ◽  
Vol 10 (8) ◽  
pp. 2797 ◽  
Author(s):  
Xiaodong Xu ◽  
Xinhan Xu ◽  
Peng Guan ◽  
Yu Ren ◽  
Wei Wang ◽  
...  
Keyword(s):  
Urban Areas ◽  
Comprehensive Analysis ◽  
Permeation Rate ◽  
Time Dimension ◽  
Urban Street ◽  
Nanjing City ◽  
Almost All ◽  
The Impact ◽  
Public Environment ◽  
Function Density

Street vitality is associated with a comfortable human-based public environment and urban sustainability. In most current studies, street vitality is assessed considering single or multi factors; however, the impact of time dimension is ignored. This study selects nine different year-built streets in old, main, and new urban areas, in Nanjing, China, proposes a framework to assess street vitality considering the different time dimensions and selects the following factors: street form, including building density, continuity, and height-width; street business type, including store density, function density, and permeation rate; and street accessibility, including location, the number of entrances/exits, transportation, and walkability. After calculating the values of the subfactors, a ranking method was applied to assign the ranking of impact of all factors for a comprehensive analysis. The results showed that Pipa Street, Wufu Street in a main urban area, and Hongmiao Street had the highest street vitality and the highest rankings of almost all the factors. Street vitality in different periods demonstrated that street vitality in new urban areas is lower compared with old and main urban areas.

scholarly journals A Comprehensive Analysis Regarding DESI Country Progress for Romania Relative to the European Average Trend

2017 ◽  
Vol 2 (1) ◽  
pp. 258-266
Author(s):  
Eduard Alexandru Stoica ◽  
Ioana Andreea Bogoslov
Keyword(s):  
Urban Areas ◽  
Digital Technologies ◽  
Comprehensive Analysis ◽  
Modern World ◽  
Past Performance ◽  
Policy Makers ◽  
The Past ◽  
Digital Skills ◽  
Positive Evolution ◽  
The Eu

Abstract In the absence of globally coherent specifications and standards, digitalization would never have spread across the world in such a huge extent as it did. The availability of digital technologies has significantly increased in the last decade, shifting the focus of policy-makers from on the diffusion of these technologies to their usage by governments, companies and also individuals. Actually, digital technologies and internet became the main forces for transforming the modern world and its economy. Activating within a turbulent environment, Romania faced many challenges in the last three years, but it managed to perform better from period to period. Relative to the past performance, Romania registers a higher rate of digitalization, benefiting from coverage of rapid broadband connections, mostly in urban areas. This made Romania having the second highest share of subscriptions within the EU in 2016. Romania has developed increasingly fast over the last years and reached a position closer to the EU average, which translates into a positive evolution. While positive, the obtained results are not enough to compensate the country’s digital skills deficit.

Management of minor ailments in primary schoolchildren in rural and urban areas

1996 ◽  
Vol 22 (3) ◽  
pp. 167-174
Author(s):  
J A Cantrill ◽  
B Johannesson ◽  
M Nicholson ◽  
P R Noyce
Keyword(s):  
Urban Areas ◽  
Rural And Urban Areas ◽  
Rural And Urban ◽  
Primary Schoolchildren ◽  
Minor Ailments
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