Results 1 to 10 of about 585,804 (279)

Study on the spatial variation of China’s territorial ecological space based on the standard deviation ellipse

Frontiers in Environmental Science, 2022
With the rapid development of China’s economy and the acceleration of urbanization, the rapid expansion of urban space has led to a growing demand for land that has resulted in the destruction and expropriation of a large amount of ecological land in ...
Yang Zhang, Yang Zhang, Ping Jiang, Liye Cui, Yang Yang, Yang Yang, Zijun Ma, Zijun Ma, Yan Wang, Yan Wang, Donghui Miao, Donghui Miao   +11 more
doaj   +5 more sources

Explore the Mitigation Mechanism of Urban Thermal Environment by Integrating Geographic Detector and Standard Deviation Ellipse (SDE)

Remote Sensing, 2022
The urban surface temperature is a complex integrated natural-human geographic phenomena; with the development of geostatistical methods and the application of multisource data, its research has gradually shifted from a single perspective to a study that
Yifan Zhao, Qirui Wu, Panpan Wei, Hao Zhao, Xiwang Zhang, Chenkun Pang   +5 more
doaj   +3 more sources

Clarifying the Standard Deviational Ellipse [PDF]

Geographical Analysis, 2002
For a set of geographical units in the Cartesian coordinate system, the locus of the standard deviation of the x coordinates of the set forms a closed curve as the system is rotated about the origin. This curve, often referred to as “standard deviational ellipse” (SDE), is not in fact an ellipse. The actual shape of the curve has remained unclear since
Jianxin Gong
openaire   +2 more sources

Ellipse method for measuring Liaw’s anteversion of the acetabular component after total hip arthroplasty

BMC Musculoskeletal Disorders, 2020
Background Several cup anteversion measurements for post-operative total hip arthroplasty (THA) surgery have been described. We developed the standardized Liaw’s trigonometric method to eliminate the influence of patient position, which is the most ...
Kuei-Lin Yeh, Tai-Yin Wu, Hsuan-Hsiao Ma, Sheng-Mou Hou, Chen-Kun Liaw   +4 more
doaj   +2 more sources

Spatial dynamics of lithium battery recycling enterprises in China: implications for smart waste management and public health. [PDF]

Front Public Health
The recycling of lithium batteries not only requires government guidance and support but also necessitates the deep involvement of enterprises to ensure sustainable production and promote circular economic development.
Hu F, Yang H, Zhou X, Zhao S, Qiu L, Wei S, Hu J, Chen Y, Hu H, Zhou H.   +9 more
europepmc   +2 more sources

Epidemiological characteristics and spatiotemporal trend analysis of human brucellosis in Shanxi Province, China, 2014–2024 [PDF]

BMC Public Health
Background Brucellosis poses a significant public health challenge. This study aimed to analyze the epidemiological characteristics and spatiotemporal evolution of human brucellosis in Shanxi Province to inform targeted prevention strategies.
Yongfei Bai, Pei Lei, Zhaoyu Fan, Yuzan Bai, Kaiguang Zhang, Fengping Wang, Xue Dong, Ruiqi Gao, Wenqing Wang, Xi Zhang, Huaxiang Rao   +10 more
doaj   +2 more sources

Research of the Model of the Deviation Measurement and Accuracy Standard Establishment of the Ellipse Family Gear

Jixie chuandong, 2015
The non- circular gears which have the characteristics of the ellipse is induced to elliptical family gear,the curve characteristics are discussed and the general mathematical model is summarized.
Gao Ting, Han Jiang, Li Dazhu, Xia Lian
doaj   +1 more source

Analysis of the spatiotemporal evolution and drivers of agricultural carbon emissions: evidence from provincial-level regions of China [PDF]

Scientific Reports
Analyzing the evolution characteristics of China’s agricultural spatial patterns and identifying the influencing factors are of great significance for clarifying the sources of agricultural carbon emissions across regions and enhancing the efficiency of ...
Zhihui Yuan, Rong Wu, Wenting Fang, Yuxin Liu   +3 more
doaj   +2 more sources

Spatial pattern characteristics and influencing factors of state-level sports industry bases in China

Scientific Reports
The spatial distribution of sports industry bases in China holds significant practical importance for the high-quality development of China’s sports industry.
Qiuying Li, Laibing Lu
doaj   +2 more sources

Thermal Environment Effects of Built-Up Land Expansion in Shijiazhuang

Land, 2022
Exploring the thermal environment effects of built-up land expansion can lay a firm foundation for urban planning and design. This study revealed the spatiotemporal dynamic characteristics of built-up land and heat island center points in Shijiazhuang ...
Ling Qin, Han Liu, Guofei Shang, Huicai Yang, Haiming Yan   +4 more
doaj   +1 more source