Peter S. Heck

Learn More
With less than 6% of total global water resources but one fifth of the global population, China is facing serious challenges for its water resources management, particularly in rural areas due to the long-standing urban-rural dualistic structure and the economic-centralized developmental policies. This paper addresses the key water crises in rural China(More)
Integrated analysis on socioeconomic metabolism could provide a basis for understanding and optimizing regional sustainability. The paper conducted socioeconomic metabolism analysis by means of the emergy accounting method coupled with data envelopment analysis and decomposition analysis techniques to assess the sustainability of Qingyang city and its eight(More)
This paper analyzed the characteristic of the tourism destination ecosystem from perspective of entropy in Dunhuang City. Given these circumstances, an evaluation index system that considers the potential of sustainable development was formed based on dissipative structure and entropy change for the tourism destination ecosystem. The sustainable development(More)
Introduction: Primitive meteorites and interplane-tary dust particles (IDPs) contain nm-to µm-sized presolar dust grains that formed in the winds of evolved stars or in the ejecta of supernova explosions [1-3]. Except the presolar diamonds, whose circum-stellar origin is still in question, presolar silicates make up the most abundant presolar grain type.(More)
  • 1