Mine water in disused flooded coal mines is a potentially valuable low carbon heat source. This mine must be resilient to the impacts of climate change. Changes temperature and rainfall could affect resources, but range and, crucially, whether they are negative or positive – how developed operated have not been researched date. research investigating, for first time, change on resources. To understand these impacts, we work at two prospect case study locations Central...

The influence class of network problems models the propagation (an abstraction cascading beliefs, behaviors, or physical phenomena) in a network. Such have applications social networks, electrical computer viral spreading, and so on. These types networks also been studied through lens critical arcs detection; that is, which (edges) are most important for maintaining some property (e.g., connectivity). We introduce new at intersection these two models. Specifically, given set seed nodes...

A class of critical node detection problems based upon the metric communication efficiency is considered. While both exact integer programming and heuristic centrality-based methods exist for solution these problems, previous work has been mostly focused on case where perfect information about network available. In this paper we suppose that some level misinformation nodes or edges inflicted observer's perception network, is, there are hidden elements fake additional elements. An extensive...

Network cascades represent a number of real-life applications: social influence, electrical grid failures, viral spread, and so on. The commonality between these phenomena is that they begin from set seed nodes spread to other regions the network. We consider variant critical node detection problem dubbed robust fortification problem, wherein decision maker wishes fortify (within budget) limit cascading behavior under uncertain conditions. In particular, arc weights—how much influence one...

We study single- and multiple-ratio robust fractional 0-1 programming problems (RFPs). In particular, this work considers RFPs under a wide range of disjoint joint uncertainty sets, where the former implies separate sets for each numerator denominator latter accounts different forms interrelatedness between them. first demonstrate that unlike deterministic case, single-ratio RFP is nondeterministic polynomial-time hard general polyhedral sets. However, if are imbued with certain structure,...

Food trade connects distant places of food production to consumption. Through traded food, associated environmental impacts are also displaced as the consumer benefits from product without incurring externalities production. Taking U.S. rice an example, we discuss sustainability implications rewiring and for reducing irrigation (water energy) transportation greenhouse gas (GHG) emissions. We model a series robust optimization scenarios that re-arrange origin therefore target virtual water...