A solution procedure for time-cost tradeoff problems in project networks with discounted cash flows

Ermihan, Mehmet Tarık


A solution methodology for the unit commitment problem in traditional-and-wind integrated hybrid power systems under supply/demand uncertainty and emission limitations
Karabaş, Tolga; Meral, Fatma Sedef; Department of Industrial Engineering (2020-9)
Unit commitment problem (UCP) is one of the essential problems in operations planning of power generation systems. The objective is to minimize total operating cost while meeting the forecasted load requirements and satisfying several operational and technical constraints. Nevertheless, the UCP is a mixed integer, non-linear, combinatorial and NP-hard problem, making it difficult to develop any rigorous optimization method for a real-size system. In this thesis, we address two variants of the UCP: (1) the d...
A procedure on ground motion selection and scaling for nonlinear response of simple structural systems
Ay, Bekir Özer (2012-10-01)
This study presents a ground-motion selection and scaling methodology that preserves the basic seismological features of the scaled records with reduced scatter in the nonlinear structural response. The methodology modifies each strong-motion recording with known fundamental seismological parameters using the estimations of ground-motion prediction equations for a given target hazard level. It provides robust estimations on target building response through scaled ground motions and calculates the dispersion...
A multi-objective genetic algorithm for a bi-objective facility location problem with partial coverage
Karasakal, Esra (2016-04-01)
In this study, we present a bi-objective facility location model that considers both partial coverage and service to uncovered demands. Due to limited number of facilities to be opened, some of the demand nodes may not be within full or partial coverage distance of a facility. However, a demand node that is not within the coverage distance of a facility should get service from the nearest facility within the shortest possible time. In this model, it is assumed that demand nodes within the predefined distanc...
IDER, YZ; EYUBOGLU, BM; KUZUOGLU, M; Leblebicioğlu, Mehmet Kemal; BAYSAL, U; CAGLAR, BK; BIRGUL, O (IOP Publishing, 1995-08-01)
The point spread function (PSF) is the most widely used tool for quantifying the spatial resolution of imaging systems. However, prerequisites for the proper use of this tool are linearity and space invariance. Because EIT is non-linear it is only possible to compare different reconstruction algorithms using a standard data set. In this study, the FEM is used to generate simulation data, which are used to investigate the non-linear behaviour of EIT, the space dependence of its PSF and its capability of reso...
A Decentralization Method for Hybrid State Estimators
Göl, Murat (Institute of Electrical and Electronics Engineers (IEEE), 2018-03-01)
Hybrid state estimation determines the states of systems monitored both by conventional SCADA measurements and PMUs. This paper proposes a decentralization method in order to improve the computational performance of hybrid state estimators with minimum loss of accuracy. The proposed method utilizes sensitivity matrix that relates measurement errors to state estimates in order to form the so-called isolated bus groups and observable subislands. Although the proposed decentralization method can be applied to ...
Citation Formats
M. T. Ermihan, “A solution procedure for time-cost tradeoff problems in project networks with discounted cash flows,” Middle East Technical University, 1989.