China is rich in oyster resources and has a long history of aquaculture. Various forms aquaculture coexist the coastal regions China, which are dominated by raft long-line The objective this study to assess environmental sustainability systems located Jiantiao Bay, Zhejiang province, China. Emergy synthesis used quantify contributions natural economic inputs systems, order better understand sus...

Biodiesel as a promising alternative energy resource has been a hot spot in chemical engineering nowadays, but there is also an argument about the sustainability of biodiesel. In order to analyze the sustainability of biodiesel production systems and select the most sustainable scenario, various kinds of crop-based biodiesel including soybean-, rapeseed-, sunflower-, jatropha- and palm-based bi...

Questioning this report, a recent study conducted by CIRAD in four different regions shows that extensive dairy systems in Mali can be more efficient than intensive systems in Reunion Island, and just as efficient as semi-intensive systems in western France. This result was obtained using the emergy methodology, which uses one type of unit to evaluate all the resources consumed to generate food...

Arable systems have to not only provide food for the masses, but they now have to be multifunctional. Thus they need to be managed to preserve the environment, satisfy social preference and provide a living for farmers, which may be conflicting objectives. Because it has the benefit of a common currency, emergy accounting has, therefore been used to assess the economic and environmental ‘health...

Anthropogenic activity interacts with urban form and inner metabolic processes, ultimately impacting urban sustainability. China’s cities have experienced many environmental issues and metabolic disturbances since the nation-wide market-oriented “reform and opening-up” policy was adopted in the 1980s. To analyze urban reform policy impacts and metabolism sustainability at a settlement scale, th...

In Ingrassia and Morlini (2005) we have suggested the notion of equivalent number of degrees of freedom (e.d.f.) to be used in neural network modeling from small datasets. This concept is mainly based on some theoretical results given in Bartlett (1998). It is much smaller than the total number of parameters and it does not depend on the number of input variables. We generalize our previous res...