03740nas|a2200433 i 450000500170000000800410001703500150005809900260007310000300009924500660012926000520019530000300024749000520027750001520032950200840048152013080056565000450187370000380191870000530195670000460200971000530205581000840210885600650219290700250225790200110228299800280229394500100232194500100233194500100234194200070235194200070235890901710236590901860253690901710272299900150289395201350290895201350304395201280317820260817162112.0121095s1983    th uu m rtt  00|  a1eng d  a.b10069008 9aAIT RSPR no. IE-83-221 aYogeswaran, Theivanayagam13aAn algorithm for designing optimal water distribution systems  aBangkok :bAsian Institute of Technology,c1983  aiv, 22, A-4, B-8, C-12 p.1 aResearch studies project report ;vno. IE-83-22  aA research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology  aResearch Studies Project Report (M. Eng.) - Asian Institute of Technology, 1983  aA method is developed for the optimal design of single  source, looped gravity fed water distribution systems  subjected to a s ingle loading pattern .This method is based  on a recent development in the field of looped water  distribution systems , so called linear programming gradient  (LPG) method ,due to the work of Aleprovits and Shamir ( 1) {u2022}  The LPG method has the  following drawbacks: the  final  solution depends much on the starting flow pattern , and the  solution does not necessarily terminate at a local minimum  point. Our new method strengthens the LPG method in the following aspects: to eliminate high cost flow patterns for the initial solution in a systematic manner, and to modify the stepsize calculation to arrive at a local optimum  solution. This new method is applied to the test problem in (2) and a local optimal solution of cost $408,114 is obtained, which is a considerable improvement compared to the solution of $443,031 obtained in (2).  ----------- ( 1 ) Aleprovits a nd Shamir ( 1977) " Design of optimal water distribution systems ", Water resources research, Vol13 pp 885-900 (2 ) Quindry. G.E ; Brill, E.D.; Liebman, J.C and Robison, A . , (1 979) "Comments on design of  optimal water distribution systems" by Water Resources research. Vol 15 pp 987-990  0aWaterxDistributionxMathematical models1 aFujiwara, Okitsugu, eChairperson1 aOudheusden, Dirk L. Van, eExamination Committee1 aOrth, Hermann M., eExamination Committee2 aCarl Duisberg Gesellschafte, eScholarship Donor2 aAsian Institute of Technology.tResearch studies project report ;vno. IE-83-22  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B20904  a.b10069008bmnaitcy  a240711  b2c951012dmea  fyg3  lmnait  lmnait  lmnarc  c20  c40  aBarcode : 30050002949567bCREATED : 1995-10-13cRECORD # : i10066640dLPATRON : 0eLCHKIN : -f# RENEWALS : 0g# OVERDUE : 0hIUSE3 : 0iTOT CHKOUT : 0jTOT RENEW : 0  aBarcode : 30050003128443bCREATED : 1995-10-13cRECORD # : i10066652dLPATRON : 1011010eLCHKIN : 2000-02-21f# RENEWALS : 0g# OVERDUE : 0hIUSE3 : 0iTOT CHKOUT : 2jTOT RENEW : 0  aBarcode : 30050160110119bCREATED : 2016-08-04cRECORD # : i12931688dLPATRON : 0eLCHKIN : -f# RENEWALS : 0g# OVERDUE : 0hIUSE3 : 0iTOT CHKOUT : 0jTOT RENEW : 0  c3867d3867  00104070aMAINbMAINcmnaitd2026-08-17g10.00l0oAIT RSPR no. IE-83-22p30050002949567r2026-08-17 16:21:12t1w2026-08-17y20  00104070aMAINbMAINcmnaitd2026-08-17g10.00l0oAIT RSPR no. IE-83-22p30050003128443r2026-08-17 16:21:12t2w2026-08-17y20  00104070aMAINbMAINcmnarcd2026-08-17l0oAIT RSPR no. IE-83-22p30050160110119r2026-08-17 16:21:12t1w2026-08-17y40