GLOBAL SYSTEMS INSTITUTE

Publications

Production of sodium silicate powder from waste glass cullet for alkali activation of alternative binders

Publication ID: pub.1109888889

Keywords: Alkali Activated Cement; Fly Ash; Glass; Granulated-blast Furnace Slag; Waste-derived Activator

A simple process to produce sodium silicate powder from glass cullet has been developed. A mixture of glass powder, sodium hydroxide powder, and water was heated at temperatures of 150 to 330 °C. The effects of glass to NaOH ratio, temperature and duration, inclusion of water and fineness of NaOH were investigated. Fly ash and fly […]

Safe and just operating spaces for regional social-ecological systems

Publication ID: pub.1013601319

Keywords: Anhui Province; China; Environmental Thresholds; Regional Boundaries; Social-ecological Systems; Social Wellbeing; Yunnan Province

Humanity faces a major global challenge in achieving wellbeing for all, while simultaneously ensuring that the biophysical processes and ecosystem services that underpin wellbeing are exploited within scientifically informed boundaries of sustainability. We propose a framework for defining the safe and just operating space for humanity that integrates social wellbeing into the original planetary boundaries […]

Rethinking energy demand governance: Exploring impact beyond ‘energy’ policy

Publication ID: pub.1100074180

Keywords: Invisible Energy Policy; Non-energy Policy; Qualitative; Relational; Space; UK

The challenges of climate change and energy security, along with problems of fuel poverty and energy justice bring imperatives to create transitions in energy demand. Academic research and theory have begun to highlight the ways that government policies, strategies, and processes across wide-ranging areas of policy, from health to work and the economy, shape everyday […]

A novel approach to model dynamic flow interactions between storm sewer system and overland surface for different land covers in urban areas

Publication ID: pub.1027596176

Keywords: Coupled 1D/2D Flood Model; Dynamic Flow Interaction; Model Comparison; New Taipei City; Overland Flow; Roof Drainage; Sanxia District; Storm Sewer Flow; Taiwan

In this study, we developed a novel approach to simulate dynamic flow interactions between storm sewers and overland surface for different land covers in urban areas. The proposed approach couples the one-dimensional (1D) sewer flow model (SFM) and the two-dimensional (2D) overland flow model (OFM) with different techniques depending on the land cover type of […]

System complexity and policy integration challenges: The Brazilian Energy- Water-Food Nexus

Publication ID: pub.1112017902

Keywords: Biofuels; Brazil; Climate Change; Energy-water-food Nexus; Food Security; Land-use Change; Science-based Policy; Water Scarcity

The Energy-Water-Food Nexus is one of the most complex sustainability challenges faced by the world. This is particularly true in Brazil, where insufficiently understood interactions within the Nexus are contributing to large-scale deforestation and land-use change, water and energy scarcity, and increased vulnerability to climate change. The reason is a combination of global environmental change […]

Models for predicting the seepage velocity and seepage force in a fiber reinforced silty soil

Publication ID: pub.1019132193

Keywords: Hydraulic Gradient; Randomly Reinforced; Regression; Seepage Force; Seepage Velocity; Silty Soil

Randomly reinforced soil is used in hydraulic projects such as temporary canals, earth dams, stream restoration and so on for controlling seepage. This paper presents an investigation into the effect of random reinforcement on the seepage velocity and seepage force in a silty soil. Experimental tests were carried out on randomly reinforced samples with two […]