A distributed command governor strategy for the operational control of drinking water networks

Trabajo presentado a la IEEE Conference on Control Applications (CCA) celebrada en Juan-les-Pins, Antibes (Francia) del 8 al 10 de octubre de 2014.This paper proposes the application of a distributed command governor (DCG) strategy for the operational control of drinking water networks (DWN). This approach is very suitable to this kind of management problems given the large-scale and complex nature of DWNs, the relevant effect of persistent disturbances (water demands) over the network evolutions and their marginal stability feature. The performance improvement offered by DCG is compared with the consideration of two non-centralized model predictive control (MPC) approaches already proposed for the same management purposes and within the same context. The paper also discusses the effectiveness of all strategies and highlights the advantages of each approach. The Barcelona DWN is considered as the case study for the assessment analysis.This work has been partially supported by the European Commission (FP7-ICT-2011-8-318556), the European Social Fund and the Calabria Region.Peer Reviewe

Centralized and distributed command governor approaches for water supply systems management

© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.This paper evaluates the applicability of Command Governor (CG) strategies to the optimal management of Drinking Water Supply Systems (DWSS) in both centralized and distributed ways. It will be shown that CG approaches provide an adequate framework for addressing the management of these large-scale interconnected systems in the presence of periodically time-varying disturbances (water demands) that can be anticipated by using time-series forecasting approaches. The proposed centralized and distributed CG schemes are presented, discussed and compared when applied to the management of DWSS considering the same set of operational goals in all cases. The paper illustrates the effectiveness of all strategies using the Barcelona DWSS as a case study and highlighting the advantages of each approach.Peer ReviewedPostprint (author's final draft

On the comparison of predictive control and command governor approaches for operational management of drinking water networks: a case study

This paper evaluates the application of command governor (CG) strategy for the operational control of drinking water networks (DWN) given their large-scale and complex nature, the permanent and relevant effect of the disturbances (water demands) and their marginal stability feature. Moreover, the performance improvement offered by CG is compared with the application of model predictive control for the same management purposes and in the same context. The paper also discusses the effectiveness of both strategies and highlights the advantages of each approach. The Barcelona DWN is considered as case study for the undertaken assessment analysis.Peer ReviewedPostprint (author’s final draft

Who Has Access to Water? Case Study of Mexico City Metropolitan Area

human development, water, sanitation

State of Arizona emergency response and recovery plan

tableOfContents: Introduction -- Basic plan -- Emergency support function annexes -- Support annexes -- Incident annexes -- General Informationabstract: The State Emergency Response and Recovery Plan (SERRP) is a guide to how the State of Arizona conducts all hazards response. It is built upon National Response Framework as a scalable, flexible, and adaptable coordinating structures to align key roles and responsibilities, linking all levels of government, nongovernmental organizations, and the private sector. It is intended to capture specific authorities and best practices for managing incidents that range from the serious but purely local, to large-scale terrorist attacks or catastrophic natural disaster

A framework for evaluating the effectiveness of flood emergency management systems in Europe

Calls for enhancing societal resilience to flooding are echoed across Europe alongside mounting evidence that flood risk will increase in response to climate change amongst other risk-enhancing factors. At a time where it is now widely accepted that flooding cannot be fully prevented, resilience discourse in public policy stresses the importance of improving societal capacities to absorb and recover from flood events. Flood emergency management has thus emerged as a crucial strategy in flood risk management. However, the extent to which emergency management supports societal resilience is dependent on the effectiveness of governance and performance in practice. Drawing from the extensive body of literature documenting the success conditions of so-called effective emergency management more broadly, this study formulates an evaluation framework specifically tailored to the study of Flood Emergency Management Systems (FEMS) in Europe. Applying this framework, this research performs a cross-country comparison of FEMS in the Netherlands, England, Poland, France, and Sweden. Important differences are observed in how FEMS have evolved in relation to differing contextual backgrounds (political, cultural, administrative and socio-economic) and exposures to flood hazard. Whereas the organization and coordination of actors are functioning effectively, other aspects of effective FEMS are relatively under-developed in several countries, such as provisions for institutional learning, recovery-based activities and community preparedness. Drawing from examples of good practice, this paper provides a critical reflection on the opportunities and constraints to enhancing the effectiveness of FEMS in Europe

Water as a Productive Resource: Governance for Equity and Poverty Reduction

human development, water, sanitation

Market-based Approaches to Environmental Management: A Review of Lessons from Payment for Environmental Services in Asia

Market-based approaches to environmental management, such as payment for environmental services (PES), have attracted unprecedented attention during the past decade. PES policies, in particular, have emerged to realign private and social benefits such as internalizing ecological externalities and diversifying sources of conservation funding as well as making conservation an attractive land-use paradigm. In this paper, we review several case studies from Asia on payment for environmental services to understand how landowners decide to participate in PES schemes. The analysis demonstrates the significance of four major elements facilitating the adoption and implementation of PES schemes: property rights and tenure security, transaction costs, household and community characteristics, communications, and the availability of PES-related information. PES schemes should target win-win options through intervention in these areas, aimed at maintaining the provision of ecological services and improving the conditions for local inhabitants

On the Ground in Afghanistan

The book includes 15 vignettes about different units from the U.S. Marines, U.S. Army, and U.S. Army Special Forces; the British army and marines; the Dutch army and marines; and the Canadian army. The case studies cover 10 provinces in the south and east of Afghanistan. They describe the diverse conditions the units faced in these provinces, how they responded to these conditions, what worked and what did not, and the successes involved in these operations