Walter Beyeler
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View article: Optimal Electric Grid Black Start Restoration Subject to Threats.
Optimal Electric Grid Black Start Restoration Subject to Threats. Open
View article: Socioeconomically-inspired modeling to justify use of fine-grain mobility data
Socioeconomically-inspired modeling to justify use of fine-grain mobility data Open
When designing measures to control infectious disease spread, it is crucial to understand the structure of the population for which interventions are being implemented. Recent work has highlighted the need for models that incorporate demog…
View article: SES-influenced modeling to inform Strategies for Disease Control
SES-influenced modeling to inform Strategies for Disease Control Open
View article: A Practical Application of Global Sensitivity Analysis for Stochastic Epidemiology Models in Support of Policy Decisions.
A Practical Application of Global Sensitivity Analysis for Stochastic Epidemiology Models in Support of Policy Decisions. Open
View article: Optimal Electric Grid Black Start Restoration Subject to Intentional Threats
Optimal Electric Grid Black Start Restoration Subject to Intentional Threats Open
Efficient restoration of the electric grid from significant disruptions – both natural and manmade – that lead to the grid entering a failed state is essential to maintaining resilience under a wide range of threats. Restoration follows a …
View article: Natural Gas Network Modeling.
Natural Gas Network Modeling. Open
View article: Optimal Electric Grid Black Start Restoration Subject to Intentional Threats.
Optimal Electric Grid Black Start Restoration Subject to Intentional Threats. Open
operators. These assumptions are not guaranteed under some threats. This paper focuses on a novel integration of modeling and analysis capabilities to aid operators during restoration activities. A power flow-informed restoration framework…
View article: Modeling of Compressible Gas Systems in Limited Information Environments.
Modeling of Compressible Gas Systems in Limited Information Environments. Open
View article: COVID-19 Medical Resource Demands.
COVID-19 Medical Resource Demands. Open
View article: Modeling of Natural Gas Networks for Consequence Analysis.
Modeling of Natural Gas Networks for Consequence Analysis. Open
View article: Sensitivity of Infrastructure Sectors to the Disruption of Commercial Electric Power
Sensitivity of Infrastructure Sectors to the Disruption of Commercial Electric Power Open
Electric power is crucial to the function of other infrastructures, as well as to the stability of the economy and the social order. Disruption of commercial electric power service, even for brief periods of time, can create significant co…
View article: NFD Methodology Report
NFD Methodology Report Open
The NetFlow Dynamics (NFD) model was developed for estimating the availability of a commodity supplied by a national- or regional-scale infrastructure following unexpected disruption of one or more of its components. The large scope of the…
View article: New approaches for payment system simulation research.
New approaches for payment system simulation research. Open
View article: Modeling Adaptation in Complex Systems: CSYS 300.
Modeling Adaptation in Complex Systems: CSYS 300. Open
View article: Modeling efficient and equitable distribution of COVID-19 vaccines
Modeling efficient and equitable distribution of COVID-19 vaccines Open
Producing and distributing COVID-19 vaccine during the pandemic is a major logistical challenge requiring careful planning and efficient execution. This report presents information on logistical, policy and technical issues relevant to rap…
View article: Adaptive Recovery Model: Designing Systems for Testing Tracing and Vaccination to Support COVID-19 Recovery Planning.
Adaptive Recovery Model: Designing Systems for Testing Tracing and Vaccination to Support COVID-19 Recovery Planning. Open
This report documents a new approach to designing disease control policies that allocate scarce testing, contact tracing, and vaccination resources to better control community transmission of COVID19 or similar diseases. The Adaptive Recov…
View article: Modeling Operator Behavior During Blackstart.
Modeling Operator Behavior During Blackstart. Open
the dry thin wall cast iron liners, 2 design configurations are employed: loose-fit type having a specified clearance between the outer liner surface and the cylinder bore surface; press-in type having an interference fit between the outer…
View article: Approximating Power System Dynamics for Black Start Planning.
Approximating Power System Dynamics for Black Start Planning. Open
View article: Sandia's Research in Support of COVID-19 Pandemic Response: Computing and Information Sciences
Sandia's Research in Support of COVID-19 Pandemic Response: Computing and Information Sciences Open
This report summarizes the goals and findings of eight research projects conducted under the Computing and Information Sciences (CIS) Research Foundation and related to the COVID- 19 pandemic. The projects were all formulated in response t…
View article: Movement and spatial specificity support scaling in ant colonies and immune systems: Application to national biosurveillance.
Movement and spatial specificity support scaling in ant colonies and immune systems: Application to national biosurveillance. Open
View article: Uncertainty Analysis Framework for the Hospital Resource Supply Model for Covid-19
Uncertainty Analysis Framework for the Hospital Resource Supply Model for Covid-19 Open
In March and April of 2020 there was widespread concern about availability of medical resources required to treat Covid-19 patients who become seriously ill. A simulation model of supply management was developed to aid understanding of how…
View article: Integrated Resource Supply-Demand-Routing Model for the COVID-19 Crisis
Integrated Resource Supply-Demand-Routing Model for the COVID-19 Crisis Open
As part of the Department of Energy response to the novel coronavirus disease (COVID-19) pandemic of 2020, a modeling effort was sponsored by the DOE Office of Science. Through this effort, an integrated planning framework was developed wh…
View article: Uncertainty analysis of Resource Demand Model for Covid-19
Uncertainty analysis of Resource Demand Model for Covid-19 Open
As part of the Department of Energy response to the novel coronavirus pandemic of 2020, a modeling effort was sponsored by the DOE Office of Science. One task of this modeling effort at Sandia was to develop a model to predict medical reso…
View article: The Grey Zone Test Range Integrated Urban Simulation Environment
The Grey Zone Test Range Integrated Urban Simulation Environment Open
Sandia National Laboratories is part of the government test and evaluation team for the Defense Advanced Research Projects Agency Collection and Monitoring via Planning for Active Situational Scenarios program. The program is designed to b…
View article: Collection and Monitoring via Planning for Active Situational Scenarios (COMPASS) (Strategic Multi-Layer Assessment Report)
Collection and Monitoring via Planning for Active Situational Scenarios (COMPASS) (Strategic Multi-Layer Assessment Report) Open
An emergent type of geopolitical warfare in recent years has been coined "Gray Zone competition," "competition short of armed conflict", or simply "competition," because it sits in a nebulous area between peace and conventional conflict. A…
View article: Biologically inspired approaches for biosurveillance anomaly detection and data fusion
Biologically inspired approaches for biosurveillance anomaly detection and data fusion Open
This study developed and tested biologically inspired computational methods to detect anomalous signals in data streams that could indicate a pending outbreak or bio-weapon attack. Current large-scale biosurveillance systems are plagued by…
View article: Modeling to create sustainable point of care HIV/TB testing networks for developing countries.
Modeling to create sustainable point of care HIV/TB testing networks for developing countries. Open
View article: Improving veterans' access to influenza vaccination: Modeling effectiveness of public-private partnerships.
Improving veterans' access to influenza vaccination: Modeling effectiveness of public-private partnerships. Open
View article: Socio-behavioral considerations in the role of militant extremism
Socio-behavioral considerations in the role of militant extremism Open
This paper discusses relevant findings and theories regarding the role of ideology, culture, and context in shaping the behaviors of individuals within violent social movements. Accordingly, this focus concerns the comparative weight place…
View article: Socio-behavioral considerations in the role of violent social movements
Socio-behavioral considerations in the role of violent social movements Open
This paper discusses relevant findings and theories regarding the role of ideology, culture, and context in shaping the behaviors of individuals within violent social movements. Accordingly, this focus concerns the comparative weight place…