Emergy and emergy algebra explained by means of ingenuous set theory

被引：40

作者：

Bastianoni, Simone ^{[1
]}

Morandi, Fabiana ^{[1
]}

Flaminio, Tommaso ^{[2
]}

Pulselli, Riccardo M. ^{[1
]}

Tiezzi, Elisa B. P. ^{[3
]}

机构：

[1] Univ Siena, Dept Chem, I-53100 Siena, Italy

[2] Campus Univ Autonoma Barcelona, IIIA CSIC, Artificial Intelligence Res Inst, Bellaterra 08193, Spain

[3] Univ Siena, Dept Math & Informat R Magari, I-53100 Siena, Italy

来源：

ECOLOGICAL MODELLING | 2011年 / 222卷 / 16期

关键词：

Ingenuous set theory; Emergy; Emergy Algebra; Split; Co-product; Feedback; SYSTEMS; EXERGY;

D O I：

10.1016/j.ecolmodel.2011.05.013

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Emergy is an important concept that has originated several effects in ecology, systems ecology and sustainability science. Its communication, however, has always presented several problems, since it does not follow the same rules of conservation as other energy-based approaches. Attempts have been made to clarify emergy by means of more formal/mathematical approaches, but the problem persists. In this paper, we have introduced a view of emergy and of its algebra based on ingenuous set theory. By means of this simple tool, emergy can be defined as the set of solar exergy that is directly and indirectly necessary to make a product. The operation that correctly sums the emergy "carried" by the inputs to a process is the union. This definition and the operation of union are able to account for all the rules of emergy algebra. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2903 / 2907

页数：5

共 15 条

[1]

[Anonymous], 2004, INTRO COMBINATORICS

[2] Emergy as a function of exergy [J].