Sylvan Elhay
School of Computer and Mathematical Sciences
Faculty of Sciences, Engineering and Technology
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Awards and Achievements
Date Type Title Institution Name Country Amount 2022 Honour Induction into SA Music Hall of Fame AMC Australia - 2004 Honour Honorary Life Member, Music Council of Australia Music Council of Australia Australia - -
Education
Date Institution name Country Title 1970 University of Adelaide Australia PhD
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Journals
Year Citation 2023 Deuerlein, J. W., Elhay, S., Piller, O., & Simpson, A. R. (2023). Modeling Flow and Pressure Control in Water Distribution Systems Using the Nash Equilibrium. Journal of Water Resources Planning and Management, 149(6), 16 pages.
2022 Elhay, S., Piller, O., Deuerlein, J. W., & Simpson, A. R. (2022). An Interior Point Method Applied to Flow Constraints in a Pressure-Dependent Water Distribution System. Journal of Water Resources Planning and Management, 148(1), 15 pages.
Scopus2 WoS22020 PILLER, O., Elhay, S., Deuerlein, J. W., & Simpson, A. R. (2020). A content-based active-set method for pressure-dependent models of water distribution systems with flow controls. Journal of Water Resources Planning and Management, 146(4), 04020009-1-04020009-13.
Scopus15 WoS112019 Qiu, M., Simpson, A. R., Elhay, S., & Alexander, B. (2019). Bridge-Block Partitioning Algorithm for Speeding Up Analysis of Water Distribution Systems. Journal of Water Resources Planning and Management, 145(9), 15 pages.
Scopus3 WoS32019 Deuerlein, J. W., Piller, O., Elhay, S., & Simpson, A. R. (2019). Content-Based active-set method for the pressure-dependent model of water distribution systems. Journal of Water Resources Planning and Management, 145(1), 14 pages.
Scopus25 WoS192019 Qiu, M., Alexander, B., Simpson, A., & Elhay, S. (2019). A software tool for assessing the performance of and implementing water distribution system solution methods. Environmental Modelling and Software, 112, 52-69.
Scopus2 WoS12019 Qiu, M., Elhay, S., Simpson, A., & Alexander, B. (2019). Benchmarking study of water distribution system solution methods. Journal of Water Resources Planning and Management, 145(2), 13 pages.
Scopus5 WoS32018 Elhay, S., Deuerlein, J., Piller, O., & Simpson, A. R. (2018). Graph partitioning in the analysis of pressure dependent water distribution systems. Journal of Water Resources Planning and Management, 144(4), 1-13.
Scopus4 WoS42017 Simpson, A. R., & Elhay, S. (2017). Erratum: Jacobian Matrix for Solving Water Distribution System Equations with the Darcy-Weisbach Head-Loss Model [J. Hydraul. Eng.]doi 10.1061/(ASCE)HY.1943-7900.0000341. Journal of Hydraulic Engineering, 143(9), 1 page.
2017 Piller, O., Elhay, S., Deuerlein, J., & Simpson, A. R. (2017). Local Sensitivity of Pressure-Driven Modeling and Demand-Driven Modeling Steady-State Solutions to Variations in Parameters (vol 143, 2017). JOURNAL OF WATER RESOURCES PLANNING AND MANAGEMENT, 143(8), 1 page.
WoS72017 Piller, O., Elhay, S., Deuerlein, J., & Simpson, A. (2017). Local sensitivity of pressure-driven modeling and demand-driven modeling steady-state solutions to variations in parameters. Journal of Water Resources Planning and Management, 143(2), 04016074-1-04016074-12.
Scopus21 WoS152017 Piller, O., Elhay, S., Deuerlein, J., & Simpson, A. R. (2017). Erratum: Local sensitivity of pressure-driven modeling and demand-driven modeling steady-state solutions to variations in parameters. [Journal of Water Resources Planning and Management, 143, 2 (2016) (04016074)] DOI:10.1061/(ASCE)WR.1943-5452.0000729. Journal of Water Resources Planning and Management, 143(8).
Scopus12016 Deuerlein, J., Elhay, S., & Simpson, A. (2016). Fast graph matrix partitioning algorithm for solving the water distribution system equations. Journal of Water Resources Planning and Management, 142(1), 04015037-1-04015037-11.
Scopus16 WoS102015 Elhay, S., Piller, O., Deuerlein, J., & Simpson, A. (2015). A robust, rapidly convergent method that solves the water distribution equations for pressure-dependent models. Journal of Water Resources Planning and Management, 142(2), 04015047-1-04015047-12.
Scopus47 WoS352014 Elhay, S., Simpson, A., Deuerlein, J., Alexander, B., & Schilders, W. (2014). Reformulated co-tree flows method competitive with the global gradient algorithm for solving water distribution system equations. Journal of Water Resources Planning and Management, 140(12), 04014040-1-04014040-10.
Scopus41 WoS362014 Simpson, A., Elhay, S., & Alexander, B. (2014). Forest-core partitioning algorithm for speeding up analysis of water distribution systems. Journal of Water Resources Planning and Management, 140(4), 435-443.
Scopus19 WoS162012 Elhay, S., & Simpson, A. (2012). Closure to "Dealing with Zero Flows in Solving the Nonlinear Equations for Water Distribution Systems" by Sylvan Elhay and Angus R. Simpson. Journal of Hydraulic Engineering, 139(5), 560-562.
Scopus3 WoS32012 Brkić, D. (2012). Discussion of Jacobian Matrix for Solving Water Distribution System Equations with the Darcy-Weisbach Head-Loss Model" by Angus Simpson and Sylvan Elhay. Journal of Hydraulic Engineering, 138(11), 1000-1001.
2012 Simpson, A., & Elhay, S. (2012). Closure to "Jacobian matrix for solving water distribution system equations with the Darcy-Weisbach head-loss model" by Angus Simpson and Sylvan Elhay. Journal of Hydraulic Engineering, 138(11), 1001-1002.
Scopus2 WoS22011 Elhay, S., & Simpson, A. (2011). Dealing with zero flows in solving the nonlinear equations for water distribution systems. Journal of Hydraulic Engineering, 137(10), 1216-1224.
Scopus42 WoS342011 Simpson, A., & Elhay, S. (2011). Jacobian matrix for solving water distribution system equations with the Darcy-Weisbach head-loss model. Journal of Hydraulic Engineering, 137(6), 696-700.
Scopus37 WoS292009 Simpson, A., & Elhay, S. (2009). Formulating the water distribution system equations in terms of head and velocity. Geotechnical Special Publication, (187), 790-802.
2007 Elhay, S. (2007). Symmetry preserving partial pole assignment for the standard and the generalized eigenvalue problems. The ANZIAM Journal, 48((CTAC2006)), C264-C279.
Scopus22004 Ghosh, A., Mazumdar, J., & Elhay, S. (2004). On the inverse problem of a vibrating membrane of arbitrary shape. International Journal of Applied Mathematics and Statistics, 2(DO4), 15-28. 2004 Elhay, S., & Ram, Y. (2004). Quadratic pencil pole assignment by affine sums. The ANZIAM Journal - On-line full-text, 45, C592-C603. 2003 Elhay, S., Golub, G., & Ram, Y. (2003). The spectrum of a modified linear pencil. Computers & Mathematics With Applications, 46(8-9), 1413-1426.
Scopus4 WoS22002 Elhay, S., & Ram, Y. (2002). An affine inverse eigenvalue problem. Inverse Problems, 18(2), 455-466.
Scopus24 WoS222000 Datta, B., Elhay, S., Ram, Y., & Sarkissian, D. (2000). Partial eigenstructure assignment for the quadratic pencil. Journal of Sound and Vibration, 230(1), 101-110.
Scopus122 WoS1152000 Ram, Y. M., & Elhay, S. (2000). Pole assignment in vibratory systems by multi-input control. Journal of Sound and Vibration, 230(2), 309-321.
Scopus68 WoS581999 Elhay, S., Gladwell, G. M. L., Golub, G. H., & Ram, Y. M. (1999). On some eigenvector-eigenvalue relations. SIAM Journal on Matrix Analysis and Applications, 20(3), 563-574.
Scopus20 WoS151998 Ram, Y., & Elhay, S. (1998). Constructing the shape of a rod from eigenvalues. Communicaions in Numerical Methods in Engineering, 14(7), 597-696.
Scopus14 WoS121997 Datta, B., Elhay, S., & Ram, Y. (1997). Orthgonality and partial pole assignment for the symmetric definite quadratic pencil. Linear Algebra and Its Applications, 257(1-3), 29-48.
Scopus161 WoS1461996 Ram, Y., & Elhay, S. (1996). The theory of a multi-degree-of-freedom dynamic absorber. Journal of Sound and Vibration, 195(4), 607-615.
Scopus43 WoS331996 Ram, Y., & Elhay, S. (1996). An inverse eigenvalue problem for the symmetric tridiagonal quadratic pencil with application of damped oscillatory systems. SIAM Journal of Applied Mathematics, 56(1), 232-244.
Scopus38 WoS351996 Ram, Y. M., & Elhay, S. (1996). Construction of a quadratic pencil from eigenvalues. ZAMM Zeitschrift fur Angewandte Mathematik und Mechanik, 76(SUPPL. 2), 13-16. 1995 Ram, Y., & Elhay, S. (1995). Dualities in vibrating rods and beams: continuous and discrete models. Journal of Sound and Vibration, 184(5), 759-766.
Scopus15 WoS91995 Ram, Y., & Elhay, S. (1995). The construction of band symmetric models for vibratory systems for modal analysis data. Journal of Sound and Vibration, 181(4), 583-594.
Scopus5 WoS21994 Elhay, S., & Kautsky, J. (1994). Jacobi matrices for measures modified by a rational factor. Numerical Algorithms, 6(2), 205-227.
Scopus131992 Elhay, S., Golub, G. H., & Kautsky, J. (1992). Jacobi matrices for sums of weight functions. BIT, 32(1), 143-166.
Scopus15 WoS111991 Boley, D. L., Elhay, S., Golub, G. H., & Gutknecht, M. H. (1991). Nonsymmetric Lanczos and finding orthogonal polynomials associated with indefinite weights. Numerical Algorithms, 1(1), 21-43.
Scopus201987 Elhay, S., & Kautsky, J. (1987). ALGORITHM 655: IQPACK: FORTRAN Subroutines for the Weights of Interpolatory Quadratures. ACM Transactions on Mathematical Software (TOMS), 13(4), 399-415.
Scopus30 WoS301984 KAUTSKY, J., & ELHAY, S. (1984). GAUSS QUADRATURES AND JACOBI MATRICES FOR WEIGHT-FUNCTIONS NOT OF ONE SIGN. MATHEMATICS OF COMPUTATION, 43(168), 543-550.
WoS121984 Kautsky, J., & Elhay, S. (1984). Gauss quadratures and jacobi matrices for weight functions not of one sign. Mathematics of Computation, 43(168), 543-550.
Scopus161982 Kautsky, J., & Elhay, S. (1982). Calculation of the weights of interpolatory quadratures. Numerische Mathematik, 40(3), 407-422.
Scopus28 WoS301981 Baverstock, P. R., & Elhay, S. (1981). Water balance of small lactating rodents -III. Estimates of milk production and water recycling in lactating Mus musculus under various water regimes. Journal of Mathematical Biology, 13(1), 1-22.
Scopus5 WoS7 Europe PMC31979 Baverstock, P. R., & Elhay, S. (1979). Water-balance of small lactating rodents-IV. Rates of milk production in Australian rodents and the guinea pig. Comparative Biochemistry and Physiology -- Part A: Physiology, 63(2), 241-246.
Scopus2 WoS41976 Elhay, S., & Casley-Smith, J. R. (1976). Mathematical model of the initial lymphatics. Microvascular Research, 12(2), 121-140.
Scopus15 WoS29 Europe PMC91969 Elhay, S. (1969). Optimal quadrature. Bulletin of the Australian Mathematical Society, 1(1), 81-108.
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Book Chapters
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Conference Papers
Year Citation 2017 Deuerlein, J., Piller, O., Elhay, S., & Simpson, A. (2017). Sensitivity Analysis of Topological Subgraphs within Water Distribution Systems. In J. Saldarriaga (Ed.), Procedia Engineering Vol. 186 (pp. 252-260). Univ Andes, Dept Civil & Environm Engn, Cartagena, COLOMBIA: ELSEVIER SCIENCE BV.
Scopus2 WoS22017 Deuerlein, J., Piller, O., Parisini, F., Simpson, A. R., & Elhay, S. (2017). On the solvability of the pressure driven hydraulic steady-state equations considering feedback-control devices. In CCWI 2017 - 15th International Conference on Computing and Control for the Water Industry (pp. 1-9). online: University of Sheffield.
Scopus22017 Piller, O., Elhay, S., Deuerlein, J., & Simpson, A. (2017). Why are line search methods needed for hydraulic DDM and PDM solvers?. In CCWI 2017 - 15th International Conference on Computing and Control for the Water Industry (pp. 1-8). online: University of Sheffield.
Scopus22012 Elhay, S., & Simpson, A. (2012). The Darcy-Weisbach Jacobian and avoiding zero flow failures in the global gradient algorithm for the water network equations. In World Environmental and Water Resources Congress 2012: Crossing Boundaries, Proceedings of the 2012 Congress (pp. 3292-3302). Albuquerque, New Mexico, USA: American Society of Civil Engineers.
Scopus12009 Simpson, A., & Elhay, S. (2009). A Framework for Alternative Formulations of the Pipe Network Equations. In World Environmental and Water Resources Congress 2009: Great Rivers Proceedings Vol. 342 (pp. 0 pages). Kansas City, Missouri, USA: ASCE.
Scopus32008 Simpson, A., & Elhay, S. (2008). Formulating the water distribution system equations in terms of head and velocity. In Proceedings of Water Distribution Systems Analysis 2008 (pp. 0 pages). Kruger National Park, South Africa.: American Society of Civil Engineers.
Scopus21997 Torokhti, A., Howlett, P., Moran, W., Gray, D., & Elhay, S. (1997). Data compression with noise suppression: A new approach. In IEEE International Symposium on Information Theory - Proceedings (pp. 189). IEEE.
1996 Datta, B. N., Elhay, S., & Ram, Y. M. (1996). Algorithm for the partial multi-input pole assignment problem of a second-order control system. In Proceedings of the IEEE Conference on Decision and Control Vol. 2 (pp. 2025-2029). KOBE, JAPAN: I E E E.
Scopus23 WoS211996 Torokhti, A., Elhay, S., Moran, W., Howlett, P., & Gray, D. (1996). Discrete tree rational transforms. In B. Boashash, N. Harle, & A. M. Zoubir (Eds.), Proceedings of the International Symposium on Signal Processing and its Applications, ISSPA Vol. 1 (pp. 425-426). GOLD COAST, AUSTRALIA: QUEENSLAND UNIVERSITY TECHNOLOGY.
Scopus11996 Torokhti, A., Gray, D., Elhay, S., Howlett, P., & Moran, W. (1996). New technique for multidimensional signal compression. In Proceedings of the International Symposium on Signal Processing and its Applications, ISSPA Vol. 1 (pp. 162-165).
Scopus1- Piller, O., Deuerlein, J., Elhay, S., & Simpson, A. R. (2022, July 18). Which flow and pressure constraints are required for sustainable operation of Water Distribution Systems?. In Proceedings - 2nd International Join Conference on Water Distribution System Analysis (WDSA)& Computing and Control in the Water Industry (CCWI). Editorial Universitat Politècnica de València.
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Past Higher Degree by Research Supervision (University of Adelaide)
Date Role Research Topic Program Degree Type Student Load Student Name 2014 - 2018 Co-Supervisor A Software Tool for Assessing the Performance of Water Distribution System Solution Methods Based on Graph Theory Doctor of Philosophy Doctorate Full Time Mr Mengning Qiu 2002 - 2007 Principal Supervisor A Category Theoretic Approach to Inconsistencies in Modular System Specification Doctor of Philosophy Doctorate Full Time Miss Catherine Menon
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Review, Assessment, Editorial and Advice
Date Title Type Institution Country 2009 - ongoing Editor, Journal Of Music Research Online Editorial University of Adelaide Australia
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