Groundwater sustainability assessment framework: A demonstration of environmental sustainability index for Hanoi, Vietnam

2019 ◽  
Vol 241 ◽  
pp. 479-487 ◽  
Author(s):  
Nuong Thi Bui ◽  
Akira Kawamura ◽  
Duong Du Bui ◽  
Hideo Amaguchi ◽  
Dan Duc Bui ◽  
...  
2019 ◽  
Vol 8 (4) ◽  
pp. 60-104
Author(s):  
Tatiana Tambouratzis ◽  
Nikos Hatziefthimiou

A country-oriented methodology for attaining absolute environmental sustainability (ES) is proposed and demonstrated on the environmental sustainability index (ESI) 2002. The optimal means of deriving the ES levels/scores of the participating countries from the various ESI 2002 constructs is established and, subsequently, encoded in a real-valued evolution strategy (EvS) for the viable and flexible country-specific ES improvement towards maximal ES. The EvS employs: (a) constraints concerning the number and combinations of constructs that can be concurrently improved; (b) limited and progressively decreasing construct improvements expressing the escalating difficulty of improving any construct as the construct and/or overall ES approach(es) maximum. Demonstrations on countries with diverse characteristics and comparisons with alternative optimization methodologies highlight the versatility and applicability of the proposed procedure to any country with data that is compatible to that of the participating countries.


2020 ◽  
Vol 12 (8) ◽  
pp. 3092
Author(s):  
Mohammad S. M. Almulhim ◽  
Dexter V. L. Hunt ◽  
Chris D. F. Rogers

In Saudi Arabia, the carbon footprint and energy use that results from using concrete in construction is a major negative contributor to the environmental effects of building materials. Likewise, the impact of annual cooling and heating energy demands has an equally prominent role to play. These demands need to be assessed and benchmarked in order that reduction targets can be set. Saudi Arabia presents its own unique context and local conditions, which creates a challenge when utilizing generic frameworks for assessing the environmental impact of domestic buildings. In meeting this aim, this paper presents a resilience and environmental sustainability assessment framework (RESAF) developed specifically for domestic buildings in Saudi Arabia. RESAF helps designers/builders to minimize the carbon footprint of the building fabric and reduce in-use energy demands of domestic buildings in Saudi Arabia. This paper shows how this framework can be used to reduce, by approximately 23%, the carbon impact from construction materials, primarily by substituting a portion of cement for pulverized fly ash (PFA) or ground granulated blast furnace slag (GGBS). A reduction of 19% in annual cooling and heating energy demand were additionally achieved throughout the building’s life, simply by increasing insulation and using triple-glazed windows. The importance of passing these alternative solutions through the resilience filter is highlighted, not least questioning whether they are really fit-for-purpose.


Sign in / Sign up

Export Citation Format

Share Document