نتایج جستجو برای: eco system

تعداد نتایج: 2247485  

2017
Ioan G. Pop Francesco Asdrubali

The paper combines original concepts about eco-energetic systems, in a transdisciplinary sustainable context. Firstly, it introduces the concept of M.E.N. (Mega-Eco-Nega-Watt), the eco-energetic paradigm based on three different but complementary ecological economic spaces: the Megawatt as needed energy, the Ecowatt as ecological energy, and the Negawatt as preserved energy. The paper also deal...

Journal: :Journal of Systems and Software 2006
Xiaoqing Shi Jingzhu Zhao Ouyang Zhiyun

Ecological security is an important basis of the entire human security system, the cornerstone for human survival. Knowing the status of ecological security is crucial for making decisions to avoid ecological disaster. Existing research, both the basic research on ecological security mechanism and information service systems, is still primitive in their abilities to resolve eco-security problem...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1390

abstract because of the many geopolitical, geo economical and geo strategically potentials and communicational capabilities of eco region, members can expand the convergence and the integration in base of this organization that have important impact on members development and expanding peace in international and regional level. based on quality analyzing of library findings and experts interv...

2005
Xiaoqing Shi Jingzhu Zhao Ouyang Zhiyun Lester R. Brown

Ecological security is an important basis of the entire human security system, the cornerstone for human survival. Knowing the status of ecological security is crucial for making decisions to avoid ecological disaster. Existing research, both the basic research on ecological security mechanism and information service systems, is still primitive in their abilities to resolve eco-security problem...

Scientists call pasture a natural eco-system and range is an agricultural eco-system. In this point of view although pasture that was full of plants growing by itself and not growing by human being (Pirdashti, 2007; Mohgadam, 2005) and two groups of living beings such as human being, plants, domesticated, and not living being like weather, Wind, gradient which are effective in making of pasture...

2003
Debashish Chowdhury Dietrich Stauffer

We propose a generic model of eco-systems, with a hierarchical food web structure. In our computer simulations we let the eco-system evolve continuously for so long that that we can monitor extinctions as well as speciations over geological time scales. Speciation leads not only to horizontal diversification of species at any given trophic level but also to vertical bio-diversity that accounts ...

2017
Sabrina Beloufa Fabrice Cauchard Joël Vedrenne Benjamin Vailleau Andras Kemeny Frédéric Mérienne Jean-Michel Boucheix

The present paper deals with how to design and test an eco-driving training tool in the form of a digital educational game, including a specific guidance system interface to teach eco-driving rules. We tested whether learners could reproduce the eco-driving behaviour and implement the rules once they were autonomous. We also aimed to validate the method as a relevant eco-driving teaching tool t...

2013
Xiaomei Zhang Guojin He

The Chinese Loess Plateau is suffering from severe soil erosion. The eco-environmental changes of the plateau have attracted considerable attentions both from scientists and local governments. Aiming at the regional features of eco-environment and main environmental problems of Linfen City, the synthetic evaluation index system including Organism Abundance index, Vegetation Cover index, Water D...

2014
Dong Joo Lee Suk Mo Lee

The world is now facing difficulties such as climate change, energy consumption and economic crisis and the green growth is commonly used as a solution to overcome that difficulties. To achieve the green growth eco-efficiency is a very important key. Studies on eco-efficiency have been done by others using financial value of product which cannot show the real value of the product. In this study...

2004
Ambarish Kunwar

Recently we have extended our the ”unified” model of evolutionary ecology to incorporate the spatial inhomogeneities of the eco-system and the migration of individual organisms from one patch to another within the same eco-system. In this paper an extension of our recent model is investigated so as to describe the migration and speciation in a more realistic way.

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