Sylvan Elhay

Dr Sylvan Elhay

School of Civil Engineering and Construction

College of Engineering and Information Technology

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 -

Date Institution name Country Title
1970 University of Adelaide Australia PhD

Year Citation
2025 Elhay, S., Fischer, M., Piller, O., Deuerlein, J., & Simpson, A. R. (2025). Modelling flow and pressure controlled pump stations with application to optimal pump scheduling. Cambridge Prisms: Water, 3.
DOI
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), 04023019 -1-04023019 -16.
DOI Scopus3 WoS2
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), 04021090-1-04021090-15.
DOI Scopus4 WoS3
2020 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.
DOI Scopus19 WoS15
2019 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.
DOI Scopus5 WoS5
2019 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.
DOI Scopus29 WoS28
2019 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.
DOI Scopus2 WoS1
2019 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.
DOI Scopus6 WoS6
2018 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.
DOI Scopus8 WoS5
2017 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.
DOI
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.
DOI WoS1
2017 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.
DOI Scopus24 WoS19
2017 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).
DOI Scopus2
2016 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.
DOI Scopus19 WoS12
2015 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.
DOI Scopus52 WoS41
2014 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.
DOI Scopus41 WoS37
2014 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.
DOI Scopus22 WoS19
2012 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.
DOI Scopus3 WoS3
2012 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.
DOI
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.
DOI Scopus2 WoS2
2011 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.
DOI Scopus43 WoS36
2011 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.
DOI Scopus40 WoS34
2009 Simpson, A., & Elhay, S. (2009). Formulating the water distribution system equations in terms of head and velocity. Geotechnical Special Publication, (187), 790-802.
DOI
2007 Elhay, S. (2007). Symmetry preserving partial pole assignment for the standard and the generalized eigenvalue problems. The ANZIAM Journal, 48((CTAC2006)), C264-C279.
DOI Scopus2
2004 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.
DOI Scopus4 WoS2
2002 Elhay, S., & Ram, Y. (2002). An affine inverse eigenvalue problem. Inverse Problems, 18(2), 455-466.
DOI Scopus30 WoS32
2000 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.
DOI Scopus127 WoS121
2000 Ram, Y. M., & Elhay, S. (2000). Pole assignment in vibratory systems by multi-input control. Journal of Sound and Vibration, 230(2), 309-321.
DOI Scopus73 WoS63
1999 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.
DOI Scopus20 WoS17
1998 Ram, Y., & Elhay, S. (1998). Constructing the shape of a rod from eigenvalues. Communicaions in Numerical Methods in Engineering, 14(7), 597-696.
DOI Scopus14 WoS12
1997 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.
DOI Scopus168 WoS154
1996 Ram, Y., & Elhay, S. (1996). The theory of a multi-degree-of-freedom dynamic absorber. Journal of Sound and Vibration, 195(4), 607-615.
DOI Scopus43 WoS33
1996 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.
DOI Scopus39 WoS36
1996 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.
DOI Scopus16 WoS9
1995 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.
DOI Scopus5 WoS2
1994 Elhay, S., & Kautsky, J. (1994). Jacobi matrices for measures modified by a rational factor. Numerical Algorithms, 6(2), 205-227.
DOI Scopus14
1992 Elhay, S., Golub, G. H., & Kautsky, J. (1992). Jacobi matrices for sums of weight functions. BIT, 32(1), 143-166.
DOI Scopus16 WoS12
1992 Elhay, S., & Kautsky, J. (1992). Generalized Kronrod Patterson type imbedded quadratures. Applications of Mathematics, 37(2), 81-103.
DOI
1991 ELHAY, S., GOLUB, G. H., & KAUTSKY, J. (1991). UPDATING AND DOWNDATING OF ORTHOGONAL POLYNOMIALS WITH DATA FITTING APPLICATIONS. SIAM JOURNAL ON MATRIX ANALYSIS AND APPLICATIONS, 12(2), 327-353.
DOI WoS31
1991 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.
DOI Scopus20
1990 RABINOWITZ, P., ELHAY, S., & KAUTSKY, J. (1990). EMPIRICAL MATHEMATICS - THE 1ST PATTERSON EXTENSION OF GAUSS-KRONROD RULES. INTERNATIONAL JOURNAL OF COMPUTER MATHEMATICS, 36(1-2), 119-129.
DOI WoS3
1987 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.
DOI Scopus34 WoS32
1984 KAUTSKY, J., & ELHAY, S. (1984). GAUSS QUADRATURES AND JACOBI MATRICES FOR WEIGHT-FUNCTIONS NOT OF ONE SIGN. MATHEMATICS OF COMPUTATION, 43(168), 543-550.
DOI WoS12
1984 Kautsky, J., & Elhay, S. (1984). Gauss quadratures and jacobi matrices for weight functions not of one sign. Mathematics of Computation, 43(168), 543-550.
DOI Scopus16
1982 Kautsky, J., & Elhay, S. (1982). Calculation of the weights of interpolatory quadratures. Numerische Mathematik, 40(3), 407-422.
DOI Scopus28 WoS31
1981 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.
DOI Scopus5 WoS7 Europe PMC4
1979 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.
DOI Scopus2 WoS5
1976 Elhay, S., & Casley-Smith, J. R. (1976). Mathematical model of the initial lymphatics. Microvascular Research, 12(2), 121-140.
DOI Scopus16 WoS29 Europe PMC10
1969 Elhay, S. (1969). Optimal quadrature. Bulletin of the Australian Mathematical Society, 1(1), 81-108.
DOI

Year Citation
2011 Elhay, S. (2011). Some inverse eigenvalue and pole placement problems for linear and quadratic pencils. In P. Van Dooren, S. Bhattacharyya, R. Chan, V. Olshevsky, & A. Routray (Eds.), Numerical Linear Algebra in Signals, Systems and Control (Vol. 80 LNEE, pp. 217-249). Netherlands: Springer.
DOI Scopus2
1991 Elhay, S., Golub, G. H., & Kautsky, J. (1991). Updating and Downdating of Orthogonal Polynomials with Data Fitting Applications. In Numerical Linear Algebra, Digital Signal Processing and Parallel Algorithms (pp. 149-172). Springer Berlin Heidelberg.
DOI

Year Citation
2024 Deuerlein, J. W., Elhay, S., Piller, O., Fischer, M., & Simpson, A. R. (2024). Modelling Variable Speed Pumps for Flow and Pressure Control Using Nash Equilibrium. In Proceedings of The 3rd International Joint Conference on Water Distribution Systems Analysis & Computing and Control for the Water Industry (WDSA/CCWI 2024) as published in Engineering Proceedings Vol. 69 (pp. 117-1-117-4). Ferrara, Italy: MDPI.
DOI
2024 Piller, O., Elhay, S., Deuerlein, J. W., & Simpson, A. R. (2024). First- and Second-Order Sensitivities of Steady-State Solutions to Water Distribution Systems. In Proceedings of The 3rd International Joint Conference on Water Distribution Systems Analysis & Computing and Control for the Water Industry (WDSA/CCWI 2024) as published in Engineering Proceedings Vol. 69 (pp. 165-1-165-5). Ferrara, Italy: MDPI.
DOI
2017 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.
Scopus2
2017 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.
Scopus2
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.
DOI Scopus2 WoS2
2012 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.
DOI Scopus1
2009 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.
DOI Scopus3
2008 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.
DOI Scopus2
1997 Torokhti, A., Howlett, P. G., Elhay, S., Gray, D., & Moran, W. (1997). Data Compression with Noise Suppression: A New Approach. In Proceedings of the International Symposium on Information Theory (pp. 189). The Netherlands: IEEE.
DOI
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 WoS21
1996 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.
Scopus1
1996 Torokhti, A., Gray, D., Elhay, S., Howlett, P., & Moran, W. (1996). New technique for multidimensional signal compression. In B. Boashash, N. Harle, & A. M. Zoubir (Eds.), Proceedings of the International Symposium on Signal Processing and Its Applications Isspa Vol. 1 (pp. 162-165). AUSTRALIA, GOLD COAST: QUEENSLAND UNIVERSITY TECHNOLOGY.
Scopus1
- Piller, O., Deuerlein, J., Elhay, S., & Simpson, A. R. (2022). 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.
DOI

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

Date Title Type Institution Country
2009 - ongoing Editor, Journal Of Music Research Online Editorial University of Adelaide Australia

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