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Genetic Algorithm Optimization of Operational Costs and Greenhouse Gas Emissions for Water Distribution Systems

L.J. Blinco, A.R. Simpson, M.F. Lambert, C.A. Auricht, N.E. Hurr, S.M. Tiggemann, A. Marchi
2014 Procedia Engineering  
A genetic algorithm (GA) model for water distribution system (WDS) operation has been developed, optimizing pumping by time-based scheduling and tank trigger levels.  ...  The interface developed in this research allows users to apply the optimization algorithm to a variety of water networks with full customization of inputs and parameters.  ...  Acknowledgements This research was supported by the Cooperative Research Centre for Water Sensitive Cities.  ... 
doi:10.1016/j.proeng.2014.11.246 fatcat:5tafxlvgujd2dhsuixwuzzygze

Minimizing the Head Losses Increases Caused by Valves in Hydraulic Networks

V.E.M.G. Diniz, Jean Revolta, Bruno Pinheiro, Rozangela Souza, Podalyro Amaral Souza, Edevar Luvizotto Junior
2015 Social Science Research Network  
The extended period simulation is calculated considering the presence of valves and/or boosters to solve over pressure and/or under pressure problems respectively.  ...  It was studied how it affects the behavior of a hydraulic network. A real hydraulic network that had over pressure and under pressure problems was analyzed.  ...  [7] considered two urban water distribution networks (WDN) optimization design problems having different objectives, including initial costs and hydraulic performance improvement of the network by satisfying  ... 
doi:10.2139/ssrn.2634112 fatcat:cq262kkjf5gthhk24hyfvvyoky

Capillary networks

Isabelle Augé-Blum, Khaled Boussetta, Hervé Rivano, Razvan Stanica, Fabrice Valois
2012 Proceedings of the first workshop on Urban networking - UrbaNe '12  
In this paper, we present our vision of the networking challenges induced by the rise of Smart Cities.  ...  We identify the emerging needs of Smart Cities, focus on the capillary networks paradigm which unifies the wealth of wireless connectivity available in urban environment, and present the research issues  ...  We have presented the main research issues that we identify as the key problems that should be solved by the wireless networking community.  ... 
doi:10.1145/2413236.2413243 fatcat:kpecittngfa2zclp6ko6qsyazy

Water Network Optimization with Wastewater Regeneration Models

Linlin Yang, Raquel Salcedo-Diaz, Ignacio E. Grossmann
2014 Industrial & Engineering Chemistry Research  
Note that the problem size is larger than that of Example 2. However, solving the problem directly using LINDOGlobal yields an optimal solution of $1,906,264 with 5% optimality gap in 209 CPU s.  ...  In order to solve the result- ing formulation to global optimality, we have presented a Lagrangean-based decomposition algorithm that is tailored to the water network problem.  ... 
doi:10.1021/ie500978h fatcat:3bwlndrpkvf2dm4ctqz4lptex4

Water network synthesis in refinery

Sungwon Hwang, Ian Moore
2011 Korean Journal of Chemical Engineering  
Economic and operational constraints are embedded into optimization of water network synthesis in order to provide more reliable and achievable solutions for the minimization of fresh water consumption  ...  This paper reviews the latest technology of water network synthesis and its applications, and provides a detailed guideline of the whole study procedure with a reference to case study based from refinery  ...  Compared with pinch analysis, this mathematical optimization can cover increased complexity of water network problems for industrial reuse, wastewater minimization and distributed effluent treatment system  ... 
doi:10.1007/s11814-011-0087-4 fatcat:nwc5wmvz5bg6pcbi2n37dpbsxq

Nonconvex Optimization for Communication Networks [chapter]

Mung Chiang
2009 Advances in Mechanics and Mathematics  
A main challenge today is on nonconvex problems in these applications. This chapter presents an overview on some of the important nonconvex optimization problems in communication networks.  ...  A variety of nonconvex optimization techniques are showcased: sum-of-squares programming through successive SDP relaxation, signomial programming through successive GP relaxation, leveraging specific structures  ...  It is provably always better than OSPF in minimizing the sum of link cost.  ... 
doi:10.1007/978-0-387-75714-8_5 fatcat:dsa7oyfzrje37e726n2xmhjld4

Battle of the Water Networks II

Angela Marchi, Elad Salomons, Avi Ostfeld, Zoran Kapelan, Angus R. Simpson, Aaron C. Zecchin, Holger R. Maier, Zheng Yi Wu, Samir M. Elsayed, Yuan Song, Tom Walski, Christopher Stokes (+48 others)
2014 Journal of water resources planning and management  
The Battle of the Water Networks II (BWN-II) is the latest of a series of competitions related to the design and operation of water distribution systems (WDSs) undertaken within the Water Distribution  ...  To celebrate the 25 th year since the publication of the first BNM, the BWN-II focuses on the optimal design and operation of a water distribution system (WDS), where not only capital and operational costs  ...  operational costs of the network provided limitations in terms of solving the problem using engineering judgment.  ... 
doi:10.1061/(asce)wr.1943-5452.0000378 fatcat:d5jesgnopbg6zic7luizqao4ie

Fair Optimization and Networks: A Survey

Wlodzimierz Ogryczak, Hanan Luss, Michał Pióro, Dritan Nace, Artur Tomaszewski
2014 Journal of Applied Mathematics  
problems and for the resource allocation problems in communication networks.  ...  This paper reviews fair optimization models and methods applied to systems that are based on some kind of network of connections and dependencies, especially, fair optimization methods for the location  ...  Tomaszewski was supported by the National Science Centre (Poland) under Grant 2011/01/B/ST7/02967 "Integer programming models for joint optimization of link capacity assignment, transmission scheduling  ... 
doi:10.1155/2014/612018 fatcat:f3e4giyywzbh7mmb3nq73yven4

Generalized Networks: A Fundamental Computer-Based Planning Tool

F. Glover, J. Hultz, D. Klingman, J. Stutz
1978 Management science  
to solve real-world problems.  ...  The resulting computer code is shown, on large problems, to be at least 50 times more efficient than the LP system, APEX III.  ...  Institute and by Project NR047-021, ONR Contracts N00014-75-C-0616 and N00014-75-C-0569 with the Center for Cybernetic Studies, The University of Texas.  ... 
doi:10.1287/mnsc.24.12.1209 fatcat:ilikum275vc3bg4h5lzxuukqjm

Optimization of Multi-Quality Water Networks: Can Simple Optimization Heuristics Compete with Nonlinear Solvers?

Mashor Housh
2021 Water  
The problem is formulated as an optimization program that minimizes cost by determining the optimal flow distribution that satisfies the water quantity and quality requirement in the demand nodes.  ...  This results in several local optima, making the process of solving large-scale problems to global optimality very challenging.  ...  For example, when 7 T = the SOH optimal value is 0.32% better than the IPOPT solution.  ... 
doi:10.3390/w13162209 fatcat:5huymwntszdgzhb5xabq3cb4y4

Simulated Annealing based Wireless Sensor Network Localization

Anushiya A Kannan, Guoqiang Mao, Branka Vucetic
2006 Journal of Computers  
The performance of the proposed algorithm is better than the performance of some well-known schemes such as DVhop method and convex optimization based semi-definite programming method.  ...  Simulated annealing is a technique for combinatorial optimization problems and unlike the gradient search method, it is robust against being trapped into local minima.  ...  But a good method to solve this problem is yet to be found. In order to address this problem, a second round of optimization is performed only on those nodes that are likely to have flip ambiguity.  ... 
doi:10.4304/jcp.1.2.15-22 fatcat:2byfhimfszfbxe5dj4uc3nbxay

Simultaneous optimal integration of water utilization and heat exchange networks using holistic mathematical programming

Wu Xiao, Rui-jie Zhou, Hong-Guang Dong, Nan Meng, Chih-Yao Lin, Vincentius Surya Kurnia Adi
2009 Korean Journal of Chemical Engineering  
A systematic holistic mathematical programming (HMP) is proposed to formulate a mixed integer nonlinear programming (MINLP) model for one-step optimization of water-allocation and heat exchange network  ...  Then, a hybrid optimization strategy integrating stochastic and deterministic components is developed for the resulting MINLP model and, also, an interactive iteration method is adopted based on sensitivity  ...  In the result of simultaneous calculation, not only a better optimization network is achieved than sequential calculation, but also several near-optimal solutions are also found which include the results  ... 
doi:10.1007/s11814-009-0196-5 fatcat:e7niu7fpjnevfl3durtzi6bx34

Increasing convergence rate in two-objective optimization of water distribution network with engineering judgment

Fariba Sherri, Amir Hossein Mahvi, Abbas Toloie Eshlaghy, Amir Hessam Hassani
2018 Environmental Health Engineering and Management  
Water distribution networks (WDNs) are facilities that require massive investment and their optimization is very important.  ...  Thus, the time to solve the optimization problem is greatly reduced, which is very important in widespread networks with many components. The case study was a WDN in western Tehran.  ...  The authors express their appreciation to the Tehran province water and wastewater co. for its cooperation in facilitating to obtain the data of network.  ... 
doi:10.15171/ehem.2018.20 fatcat:7ckehjbhfbe6lafb5x5xuutcya

Wireless Network Pricing

Jianwei Huang, Lin Gao
2013 Synthesis Lectures on Communication Networks  
Synthesis Lectures on Communication Networks is an ongoing series of 50-to 100-page publications on topics on the design, implementation, and management of communication networks.  ...  The series is designed to: • Provide the best available presentations of important aspects of communication networks. • Help engineers and advanced students keep up with recent developments in a rapidly  ...  We thank co-authors of the publications that form the  ... 
doi:10.2200/s00505ed1v01y201305cnt013 fatcat:azeby2beerbytkqglfedokxnzu

Wireless sensor network localization techniques

Guoqiang Mao, Barış Fidan, Brian D.O. Anderson
2007 Computer Networks  
A list of open research problems in the area of distance-based sensor network localization is provided with discussion on possible approaches to them.  ...  This interest is expected to grow further with the proliferation of wireless sensor network applications.  ...  ACKNOWLEDGMENT The authors would like to thank the anonymous reviewers for their helpful comments which have significantly improved the quality of the paper.  ... 
doi:10.1016/j.comnet.2006.11.018 fatcat:3ffkhxlkvrb2vnfktd6rkiwmqa
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