?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=https%3A%2F%2Fpure.iiasa.ac.at%2Fid%2Feprint%2F4200%2F&rft.title=Uncertainty+Analysis+and+Parameter+Estimation+for+a+Class+of+River+Dissolved+Oxygen+Models&rft.creator=Masliev%2C+I.&rft.creator=Somlyody%2C+L.&rft.description=Water+quality+models+are+essential+to+the+development+of+least-cost+water+quality+control+strategies+based+on+ambient+criteria.+Such+policies+are+particularly+important+if+financial+resources+are+limited+which+is+currently+the+case+in+Central+and+Eastern+European+countries.+In+turn%2C+the+derivation+of+realistic+model+parameters+is+a+pre-requisite+of+successful+model+application.+Often%2C+longitudinal+water+quality+profile+measurements+are+performed+for+the+above+purpose%2C+but+the+traditional+evaluation+of+this+data+encounters+significant+difficulties+due+to+measurement+and+other+uncertainties.+Thus%2C+probabilistic+methods+are+preferred.+This+paper+discusses+two+of+them%3A+the+Hornberger-Spear-Young+procedure+using+Monte+Carlo+simulation+and+a+Bayesian+approach.+Both+methods+are+rather+generic%2C+but+they+are+applied+here+solely+for+the+traditional+Streeter-Phelps+model+and+its+extensions%2C+describing+oxygen+household+of+rivers.+For+the+purpose+of+illustration%2C+water+quality+measurements+from+the+highly+polluted+Nitra+River+in+Slovakia+are+employed+as+a+part+of+a+policy+oriented+study.+The+BOD+decay+rate+obtained+was+rather+high+due+to+partial+biological+wastewater+treatment+and+small+water+depth%2C+but+overall%2C+derived+parameter+values+were+in+harmony+with+literature+findings.+Alternative+dissolved+oxygen+models+(2-3+state+variables+and+2-5+parameters)+could+be+evenly+calibrated+to+the+data+set.+Ranges+of+probability+density+functions+(PDFs)+for+model+parameters+were+rather+broad+calling+for+a+well-suited+formulation+of+a+water+quality+management+model.&rft.publisher=WP-94-009&rft.date=1994-02&rft.type=Monograph&rft.type=NonPeerReviewed&rft.format=text&rft.language=en&rft.identifier=https%3A%2F%2Fpure.iiasa.ac.at%2Fid%2Feprint%2F4200%2F1%2FWP-94-009.pdf&rft.identifier=++Masliev%2C+I.+%3Chttps%3A%2F%2Fpure.iiasa.ac.at%2Fview%2Fiiasa%2F1436.html%3E+%26+Somlyody%2C+L.+%3Chttps%3A%2F%2Fpure.iiasa.ac.at%2Fview%2Fiiasa%2F1584.html%3E++(1994).++Uncertainty+Analysis+and+Parameter+Estimation+for+a+Class+of+River+Dissolved+Oxygen+Models.+++IIASA+Working+Paper.+IIASA%2C+Laxenburg%2C+Austria%3A+WP-94-009+++++