Steven R. Weller
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View article: Framework of Resilient Transmission Network Reconfiguration Considering Cyber-Attacks
Framework of Resilient Transmission Network Reconfiguration Considering Cyber-Attacks Open
Fast and reliable transmission network reconfiguration is critical in improving power grid resilience to cyber-attacks. If the network reconfiguration following cyber-attacks is imperfect, secondary incidents may delay or interrupt post-at…
View article: On the social cost of carbon and discounting in the DICE model
On the social cost of carbon and discounting in the DICE model Open
The social cost of carbon (SCC) has emerged as one of the relevant measures in integrated assessment models in climate economics, to quantify costs related to global warming and climate change. While the SCC is used in different models, in…
View article: External positivity of linear systems: approximate characterization via convex polytopes
External positivity of linear systems: approximate characterization via convex polytopes Open
A linear system is said to be externally positive if the system output is non-negative for all time when driven by a non-negative input from the zero initial state. External positivity is well known to be equivalent to non-negativity of th…
View article: Cost–Benefit Analysis of HELE and Subcritical Coal-Fired Electricity Generation Technologies in Southeast Asia
Cost–Benefit Analysis of HELE and Subcritical Coal-Fired Electricity Generation Technologies in Southeast Asia Open
A large potential exists in the Southeast Asia region for deployment of high-efficiency, low-emission (HELE) electricity generation technologies. A cost–benefit analysis of HELE technologies compared to the less efficient subcritical elect…
View article: Strict dissipativity for discrete time discounted optimal control problems
Strict dissipativity for discrete time discounted optimal control problems Open
The paradigm of discounting future costs is a common feature of economic applications of optimal control. In this paper, we provide several results for such discounted optimal control aimed at replicating the now well-known results in the …
View article: On strongly unimodal third-order SISO linear systems with applications to pharmacokinetics
On strongly unimodal third-order SISO linear systems with applications to pharmacokinetics Open
This paper addresses the problem of characterizing external positivity (equivalently, non-negative impulse response) of third-order single-input, single-output (SISO) linear systems. We show how an exact, geometric solution to this problem…
View article: Feedback, dynamics, and optimal control in climate economics
Feedback, dynamics, and optimal control in climate economics Open
View article: Feedback, Dynamics, and Optimal Control in Climate Economics
Feedback, Dynamics, and Optimal Control in Climate Economics Open
For his work in the economics of climate change, Professor William Nordhaus was a co-recipient of the 2018 Nobel Memorial Prize for Economic Sciences. A core component of the work undertaken by Nordhaus is the Dynamic Integrated model of C…
View article: Feedback and Optimal Control in Climate Economics
Feedback and Optimal Control in Climate Economics Open
View article: A Transfer Function Between Line‐of‐Sight Gravity Difference and GRACE Intersatellite Ranging Data and an Application to Hydrological Surface Mass Variation
A Transfer Function Between Line‐of‐Sight Gravity Difference and GRACE Intersatellite Ranging Data and an Application to Hydrological Surface Mass Variation Open
We develop a transfer function to determine in situ line‐of‐sight gravity difference (LGD) directly from Gravity Recovery and Climate Experiment (GRACE) range‐acceleration measurements. We first reduce GRACE data to form residual range‐acc…
View article: Hierarchical distributed ADMM for predictive control with applications in power networks
Hierarchical distributed ADMM for predictive control with applications in power networks Open
View article: Towards a FAIR-DICE IAM: Combining DICE and FAIR Models ⁎ ⁎TF acknowledges support from the Daimler Benz Foundation. TF, CMK, and SRW are supported by the Australian Research Council under ARC-DP180103026.
Towards a FAIR-DICE IAM: Combining DICE and FAIR Models ⁎ ⁎TF acknowledges support from the Daimler Benz Foundation. TF, CMK, and SRW are supported by the Australian Research Council under ARC-DP180103026. Open
The estimation of the Social Cost of Carbon Dioxide (SC-CO2) is one of the essential purposes of Integrated Assessment Models (IAMs) used in the economics of climate change. One of the most widely used IAMs in this context is DICE. However…
View article: MPC-DICE: An open-source Matlab implementation of receding horizon solutions to DICE ⁎ ⁎TF acknowledges support from the Daimler Benz Foundation. The authors are supported by the Australian Research Council under ARC-DP180103026.
MPC-DICE: An open-source Matlab implementation of receding horizon solutions to DICE ⁎ ⁎TF acknowledges support from the Daimler Benz Foundation. The authors are supported by the Australian Research Council under ARC-DP180103026. Open
The most widely used integrated assessment model for studying the economics of climate change is the Dynamic Integrated model of Climate and Economy (DICE). DICE is a nonlinear, time-varying discrete-time system whereby important quantitie…
View article: Impact of Climate Model Parametric Uncertainty in an MPC Implementation of the DICE Integrated Assessment Model
Impact of Climate Model Parametric Uncertainty in an MPC Implementation of the DICE Integrated Assessment Model Open
Integrated assessment models (IAMs) are a key tool in studying the interdependence of the global economy and the climate system. For example, the dollar value of carbon dioxide emissions due to anthropogenic climate damages, known as the s…
View article: DICE2013R-mc: A Matlab / CasADi Implementation of Vanilla DICE2013R
DICE2013R-mc: A Matlab / CasADi Implementation of Vanilla DICE2013R Open
This brief document provides a description of how to use DICE2013R-mc \cite{DICE2013R-mc}, a Matlab and CasADi-based implementation of the Dynamic Integrated model of Climate and Economy (DICE). DICE2013R-mc provides the same basic functio…
View article: Maximum grid disconnection time of a small scale neighbourhood electricity network
Maximum grid disconnection time of a small scale neighbourhood electricity network Open
View article: On a discounted notion of strict dissipativity**C.M. Kellett and L. Grüne are supported by Australian Research Council Discovery Project DP160102138. L. Grüne is supported by the Deutsche Forschungsgemeinschaft, Grant GR 1569/13-1. The paper was written while L. Grüne was visiting the University of Newcastle.
On a discounted notion of strict dissipativity**C.M. Kellett and L. Grüne are supported by Australian Research Council Discovery Project DP160102138. L. Grüne is supported by the Deutsche Forschungsgemeinschaft, Grant GR 1569/13-1. The paper was written while L. Grüne was visiting the University of Newcastle. Open
Recent results in the literature have provided connections between the so-called turnpike property, near optimality of closed-loop solutions using model predictive control schemes, and strict dissipativity. An important feature of these re…
View article: Maximal Islanding Time For Microgrids via Distributed Predictive Control
Maximal Islanding Time For Microgrids via Distributed Predictive Control Open
Motivated by a specific application in electricity distribution networks, we present a hierarchical model predictive control algorithm for scheduling energy storage devices. We demonstrate that, for the proposed optimization problem, the a…
View article: Quasi-cyclic LDPC codes from difference families
Quasi-cyclic LDPC codes from difference families Open
— We consider in this paper regular and nearly regular quasi-cyclic low-density parity-check (LDPC) codes, derived from families of dif-ference sets. The codes have girth at least 6, and sparse parity-check matrices. They are designed to p…
View article: Opportunities for greener alternatives in chemical formulations
Opportunities for greener alternatives in chemical formulations Open
Formulated products contain some components that need to be replaced because of identified or suspected negative effects on health or the environment.