Results 41 to 50 of about 11,578,304 (163)

Spatial distribution characteristics of heavy metals in coal-grain composite zone and assessment of ecological risks

Meitan kexue jishu
Coal-grain composite zone, as areas where coal resources and high-quality farmland overlap spatially, bear the dual responsibility of ensuring energy and food security. However, under the dual pressures of industrialization and agricultural modernization,
Xinfu WANG, Xiaofang ZHOU, Mei ZHANG, Xiaoqing WANG, Heng ZHAO, Xiangguang ZHAO, Xiaosheng LIU   +6 more
doaj   +1 more source

Comprehensive Characterization of Ambient Volatile Organic Compounds (VOCs) in Two Industrial Parks and Clusters of Tianjin: Environmental Behaviors, Source Apportionment, and Health Risk Assessment

Atmosphere
To reveal the chemical composition and concentration distribution, spatial distribution characteristics, source composition, and health impacts of volatile organic compounds (VOCs) in the two multi-industry industrial parks in Tianjin, 57 VOC species ...
Ruiqing Chen, Yanli Wang, Ming Yang, Chanjuan Sun   +3 more
doaj   +1 more source

Characteristics of spatial variation, size distribution, formation and growth of particles in urban environments [PDF]

, 2014
This thesis is the first comprehensive study of important parameters relating to aerosols' impact on climate and human health, namely spatial variation, particle size distribution and new particle formation.
Salimi, Farhad
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Study on Topographic Features and Spatial Distribution of Soil Erosion Based on Histogram Similarity

Shuitu baochi yanjiu, 2011
The histogram is an important feature of digital image.Histogram similarity represents the level of similarity of characteristic distribution between different images.Hence,we investigated the similarity between histogram of elevation,slope and aspect ...
LIU Fei1, FAN Jian-rong1
doaj  

Spatio-temporal evolution characteristics and influencing factors of environmental welfare performance in Chinese cities

Frontiers in Public Health
BackgroundIn the process of China’s urbanization, issues such as air pollution, water pollution, soil pollution, and noise pollution have become increasingly prominent, severely constraining the sustainable development of cities. The resultant decline in
Yipeng Zhang, Meixia Wang
doaj   +1 more source

The spatial distribution of leprosy cases during 15 years of a leprosy control program in Bangladesh: An observational study [PDF]

, 2008
BACKGROUND: An uneven spatial distribution of leprosy can be caused by the influence of geography on the distribution of risk factors over the area, or by population characteristics that are heterogeneously distributed over the area.
Chowdhury, SK, Chowdhury, S. (Susmita), Fischer EAJ, SK Chowdhury, Richardus JH, Pahan, D. (David), EAJ Fischer, Richardus, J.H., Chowdhury, S.K., Fischer, EAJ, Pahan, D, Fischer, E.A.J., pahan, D., Fisher, E. (Eric), Pahan D, Richardus, Jan hendrik; id_orcid, Chowdhury SK, Richardus, J.H. (Jan Hendrik), JH Richardus, D Pahan   +19 more
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The regional distribution of spanish unemployment. A spatial analysis [PDF]

This paper proposes a set of tools to analyse the regional distribution of unemployment. As we are interested in the characteristics of the whole distribution, we complement results from the traditional regression analysis with those from the estimation ...
Artis, Manuel, Del Barrio, Tomas, Lopez-Bazo, Enrique   +2 more
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The Spatial Distribution of Labour Force Participation and Market Earnings at the Sub-National Level in Ireland [PDF]

The main aim of this paper is to provide a spatial modelling framework for labour force participation and income estimation. The development of a household income distribution for Ireland had previously been hampered by the lack of disaggregated data on ...
Cathal O'Donoghue, Karyn Morrissey
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Distribution Characteristics and Influencing Factors of Traditional Villages in the Lingnan Region of China

Buildings
Traditional villages are important parts of architectural and material cultural heritage in China. This study focuses on 710 national-level traditional villages in the Lingnan Region, which are analyzed with ArcGIS 10.8 and spatial analysis methods on ...
Dongxu Zhang, Xinyi Zhang, Li Teng, Wenjie Ma, Lingge Tan, Honghao Li   +5 more
doaj   +1 more source

Variation in Spatial Predictions Among Species Distribution Modeling Methods [PDF]

Prediction maps produced by species distribution models (SDMs) influence decision-making in resource management or designation of land in conservation planning. Many studies have compared the prediction accuracy of different SDM modeling methods, but few
Alexandra D. Syphard, Janet Franklin
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