| Summary, etc. |
[Article Title: Promise of UAV-Assisted Adaptive Management of Water Resources Systems / David J. Hill and Meghna Babbar-Sebens, p. 1-4] Abstract: Forum papers are thought-provoking opinion pieces or essays founded in fact, sometimes containing speculation, on a civil engineering topic of general interest and relevance to the readership of the journal. The views expressed in this Forum article do not necessarily reflect the views of ASCE or the Editorial Board of the journal. ;[Article Title: Estimating Distribution System Water Demands Using Markov Chain Monte Carlo / Tian Qin and Dominic L. Boccelli, p. 1-11] Abstract: The use of drinking water distribution system models has been around for decades and requires good demand estimates to ensure adequate hydraulic and water quality representation. Traditional demand estimation processes are capable of estimating demands, often for highly skeletonized systems, with approximations to represent uncertainties in demand estimates and hydraulic states. This study implemented a Markov chain Monte Carlo (MCMC) algorithm to estimate hourly demand multipliers and uncertainties for a synthetic network using a previously developed clustering algorithm to reduce the number of unknowns. ;[Article Title: Leak Localization in a Real Water Distribution Network Based on Search-Space Reduction / Sophocles Sophocleous, Dragan Savić, and Zoran Kapelan, p. 1-13] Abstract: This research article presents a model-based framework for detecting and localizing leaks in water distribution networks (WDNs). The framework uses optimization and systematic search space reduction. The method employs two stages: (1) the search space reduction (SSR) stage and (2) the leakage detection and localization stage (LDL). During SSR, the number of decision variables is reduced along with the range of possible values, while trying to preserve the optimum solution. ;[Article Title: Efficient Tabu Search Procedure for Short-Term Planning of Large-Scale Hydropower Systems / Alexia Marchand, Michel Gendreau, Marko Blais, and Grégory Emiel, p. 1-10] Abstract: Short-term hydrogeneration scheduling aims at minimizing water consumption for the next 7-15 days on an hourly basis, while satisfying the electrical load as well as many operational, regulatory, and safety requirements. In an ever-changing environment, planners need to make decisions quickly and often adapt their schedules to new conditions. They need a tool that is fast, reactive, and flexible. This paper presents a new solution approach that provides, within a few minutes of computation, near-optimal solutions to hard problems, in which one seeks to determine the number of committed generating units and turbined and spilled flows on an hourly basis for a planning horizon of 10 days. ;[Article Title: A Dynamic Adaptive Approach for Water Distribution Network Design / Maria Cunha, João Marques, Enrico Creaco, and Dragan Savić, p. 1-15] Abstract: In the face of a highly uncertain future, there is a need for water utilities to develop structured approaches for the long-term strategic design of water distribution networks (WDNs). A new conceptual framework for developing an integrative approach based on a multicriteria decision analysis (MCDA), embracing an optimization model to size flexible alternatives, is proposed. The flexible solutions are evaluated through MCDA for all the criteria (investment costs, carbon emissions, resilience, and reliability of WDNs) across all the scenarios generated for the sake of robustness and will help to adapt WDNs to changing conditions over a long planning horizon, divided into phases. ;[Article Title: Robust Urban Drainage System: Development of a Novel Multiscenario-Based Design Approach / Thuy Thi Ngo, Donghwi Jung, and Joong Hoon Kim, p. 1-10] Abstract: A traditional single-scenario design approach considers the most probable future scenario, which is very risky and may result in high supplementary cost or overpayment (i.e., regret cost). An alternative involves simultaneously considering multiple scenarios. This study proposes a novel two-phase multiscenario-based design approach to optimize the layout and hydraulic design (determining pipe sizes and manhole depths) of an urban sewer system. ;[Article Title: Optimized Scheduling of Cascade Pumping Stations in Open-Channel Water Transfer Systems Based on Station Skipping / Zhao Zhang, Xiaohui Lei, Yu Tian, Lingling Wang, Hao Wang, and Kunpeng Su, p. 1-12] Abstract: Cascade pumping stations (CPSs) in open-channel water transfer systems usually consume vast amounts of energy and are expensive to operate. For these CPS systems, scheduling optimization is a critical approach to save energy. In this paper, an optimized scheduling method based on station skipping is proposed, in which the use of one or more pumping stations can be reduced and the allocation of the gross head to other stations is optimized.;[Article Title: Long-Range River Discharge Forecasting Using the Gravity Recovery and Climate Experiment / Rakibul Khan, Moiz Usmani, Ali Akanda, Wahid Palash, Yongxuan Gao, Anwar Huq, Rita Colwell, and Antarpreet Jutla, p. 1-9] Abstract: Diarrheal diseases, notably cholera, have been shown to be related to episodic seasonal variability in river discharge, predominantly low flows, in regions where water and sanitation infrastructure are inadequate. Forecasting river discharge in transboundary international basins a few months in advance remains elusive because the necessary geophysical data are unavailable or are not shared with stakeholders. We hypothesized that river discharge in large river basins is directly related to upstream water conditions that lead to generation of high and low flows. |
