GLOBAL SYSTEMS INSTITUTE

Publications

Optimal Rehabilitation of Water Distribution Systems Using a Cluster-Based Technique

Publication ID: pub.1084150358

Publication date: 20/03/2017

Keywords: Clustering; Graph Theory; Optimal Rehabilitation; Water Distribution Systems

Optimal rehabilitation of large water distribution systems (WDSs) with many decision variables is often time consuming and computationally expensive. This paper presents a new optimal rehabilitation methodology for WDSs based on the graph theory clustering concept. The methodology starts with partitioning the WDS based on its connectivity properties into a number of clusters (small subsystems). […]

The Power of Peers: How Transnational Advocacy Networks Shape NGO Strategies on Climate Change

Publication ID: pub.1084113737

Publication date: 20/03/2017

Keywords: Climate Change; Environmental Politics; Global; Networks; NGOs; Social Movements

What explains variation in the tactical choices of non-governmental organizations (NGOs)? This article uses network autocorrelation models to establish how the tactical choices of climate change NGOs are shaped by their embeddedness in transnational advocacy networks. Specifically, it finds that NGOs are more likely to adopt protest tactics when adjacent organizations – those with whom […]

Application of Bayesian Decision Networks for Groundwater Resources Management Under the Conditions of High Uncertainty and Data Scarcity

Publication ID: pub.1084030733

Publication date: 16/03/2017

Keywords: Bayesian Decision Network; Conditional Probability Tables; Data Scarcity; Groundwater Resources; Iran; Kordkooy Region; Management Scenario; Netica

This paper presents management of groundwater resource using a Bayesian Decision Network (BDN). The Kordkooy region in North East of Iran has been selected as study area. The region has been sub-divided into three zones based on transmissivity (T) and electrical conductivity (EC) values. The BDN parameters: prior probabilities and Conditional Probability Tables – CPTs) […]

The missing Northern European winter cooling response to Arctic sea ice loss

Publication ID: pub.1084128840

Publication date: 06/03/2017

Keywords: Arctic Sea Ice Loss; Associated; Atmospheric Simulations; Cause; Effect; Examine; Missing; North Atlantic; North Atlantic Oscillation (NAO); North Europe; North European Winter Cooling; Seasonal-scale

Reductions in Arctic sea ice may promote the negative phase of the North Atlantic Oscillation (NAO−). It has been argued that NAO-related variability can be used an as analogue to predict the effects of Arctic sea ice loss on mid-latitude weather. As NAO− events are associated with colder winters over Northern Europe, a negatively shifted […]

Persistent effects of pre-Columbian plant domestication on Amazonian forest composition

Publication ID: pub.1084221222

Publication date: 02/03/2017

Keywords: Amazonia; Brazil; Domestication; Forests; History, Ancient; Humans; Trees

The extent to which pre-Columbian societies altered Amazonian landscapes is hotly debated. We performed a basin-wide analysis of pre-Columbian impacts on Amazonian forests by overlaying known archaeological sites in Amazonia with the distributions and abundances of 85 woody species domesticated by pre-Columbian peoples. Domesticated species are five times more likely than nondomesticated species to be […]

Dispersal assembly of rain forest tree communities across the Amazon basin

Publication ID: pub.1083847557

Publication date: 17/02/2017

Keywords: Amazon; Biodiversity; Geography; Phylogeny; Rainforest; Species Specificity; Trees

We investigate patterns of historical assembly of tree communities across Amazonia using a newly developed phylogeny for the species-rich neotropical tree genus Inga We compare our results with those for three other ecologically important, diverse, and abundant Amazonian tree lineages, Swartzia, Protieae, and Guatteria Our analyses using phylogenetic diversity metrics demonstrate a clear lack of […]