Empirical analysis on the eco-environmental effect based on the change of industrial structure — A case study of West Dongting Lake region

Author(s):  
Jianxin Xiong ◽  
Baofa Peng ◽  
Duanlu Chen
2013 ◽  
Vol 19 (3) ◽  
pp. 434-443 ◽  
Author(s):  
Meiwen ZHANG ◽  
Bo LI ◽  
Yong WANG ◽  
Daosong JIANG ◽  
Huang HUANG ◽  
...  

2006 ◽  
Vol 34 (3) ◽  
pp. 117-123
Author(s):  
Shouhei Takeuchi ◽  
Yuesheng Li ◽  
Yongkang He ◽  
Huan Zhou ◽  
Moji Kazuhiko ◽  
...  

Acta Tropica ◽  
1997 ◽  
Vol 68 (1) ◽  
pp. 77-91 ◽  
Author(s):  
Y.S. Li ◽  
A.G.P. Ross ◽  
D.B. Yu ◽  
Y. Li ◽  
G.M. Williams ◽  
...  

2021 ◽  
Vol 1 ◽  
pp. 2991-3000
Author(s):  
Frank Koppenhagen ◽  
Tim Blümel ◽  
Tobias Held ◽  
Christoph Wecht ◽  
Paul Davin Kollmer

AbstractCombining agility and convergence in the development of physical products is a major challenge. Rooted in a design thinking approach, Stanford's ME310 process model attempts to resolve the conflicting priorities of these two design principles. To investigate how successful Stanford's hybrid process model is in doing so, we have used a qualitative case study approach. Our paper begins by outlining this process model's fundamental principles in terms of engineering design methodology. Subsequently, we present the results of our empirical analysis, which tracks the coevolution of problem and solution space by meticulously examining all prototype paths in ten of Stanford's ME310 student projects. We have discovered that convergence during solution finding does not correspond to the process model's theoretical specifications. Even in the phase of the final prototype, both the technical concept and the underlying problem formulation changed frequently. Further research should focus on combining the prototype-based ME310 approach with methods from systems engineering which allow for a more comprehensive theoretical exploration of the solution space. This could lead to improved convergence during solution development.


2012 ◽  
Vol 518-523 ◽  
pp. 319-325
Author(s):  
Dian Qing Lu ◽  
Hong Wang ◽  
Xu Lei Hou ◽  
Xiao Mei Liu

Distribution of organic matter and effect of wetland types and pH on organic matter were studied in sediment of lakeside belt in east Dongting Lake according to taking 56 samples from surface to 20cm and 52 samples from 20cm to 40cm. The results showed that the average content of organic matter was 15.40g/kg from surface to 20cm and 12.02g/kg from 20cm to 40cm in sediment of lakeside belt in east Dongting Lake. Spatial distribution of organic matter could be expressed as middle variation. Wetland types were classed into silt beach, lake marsh beach and reed beach in Dongting Lake region and influenced distribution of organic matter because of difference variance on hydraulic dynamics condition and retarding effect of vegetation on water flow velocity. Order of organic matter content in sediment was the lake marsh beach > reed beach > silt beach in 0-20cm and 20-40cm layers in lakeside belt in east Dongting Lake. Organic matter contents decreased in turn from 0-20cm to 20-40cm in lake marsh and reed beaches and increased in silt beaches. Values of pH in sediment were slightly alkaline in whole studied region. Negative correlation was established between organic matter content and pH value. The results will provide base data and science reference for controlling and recovery of sediment pollution in east Dongting Lake.


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