Comparison of solutions under a weighted Thcebycheff function

25th International Conference on MCDM (16 - 21 Haziran 2019)


Comparison of linear and quadratic hexahedral edge elements in electromagnetic scattering problems
Yılmaz, Ayşen; Kuzuoğlu, Mustafa (2008-01-01)
In this article, performances of linear and quadratic hexahedral edge elements are compared in the context of electromagnetic scattering problems. The de-facto standard of 0.1 lambda element size for linear elements is taken as a basis; and 0.3 to 0.4 lambda-size quadratic element usage is proposed for a better accuracy level with dramatic reduction in computation time and 7 memory. The proposed scheme is applied to some well-known practical problems. (c) 2007 Elsevier GmbH. All rights reserved.
Comparison of Bayesian MAP Estimation and Kalman Filter Methods in the Solution of Spatio-Temporal Inverse ECG Problem
Aydin, Umit; Serinağaoğlu Doğrusöz, Yeşim (2009-09-12)
In this study, spatial only, and spatio-temporal Bayesian Maximum a Posteriori (MAP) methods and an another spatio-temporal method, the Kalman filter approach, are used to solve the inverse electrocardiography (ECG) problem. Training sets are used to obtain the required a priori information for all methods. Two different approaches are employed to calculate the state transition matrix (STM), which maps the epicardial potentials in two consecutive time instants in the Kalman filter method. The first one uses...
Comparison of missing value imputation methods for meteorological time series data
Aslan, Sipan; Yozgatlıgil, Ceylan; Department of Statistics (2010)
Dealing with missing data in spatio-temporal time series constitutes important branch of general missing data problem. Since the statistical properties of time-dependent data characterized by sequentiality of observations then any interruption of consecutiveness in time series will cause severe problems. In order to make reliable analyses in this case missing data must be handled cautiously without disturbing the series statistical properties, mainly as temporal and spatial dependencies. In this study we ai...
Comparison of Dynamic PTC Thermal Models Using Semi-Analytical and Finite Volume Methods
Bayer, Özgür (2018-05-01)
Resource potential estimation of concentrating solar power (CSP) applications with parabolic through collectors (PTC) needs to address time-dependent heat transfer fluid (HTF) temperature at collector field's outlet. HTF temperature distribution depends on several time-dependent variables; i.e., HTF temperature at PTC inlet, direct beam radiation, HTF flow rate and its properties, and PTC parameters, i.e., overall heat transfer coefficient. The present paper develops a time-dependent one-dimensional thermal...
Comparison of safety factors obtained from limit equilibrium methods and finite element analyses
Engin, Volkan; Toker, Nabi Kartal (2012-06-30)
Designing with limit equilibrium methods involves a factor of safety as a measure of stability, i.e. how far the resisting structure is from the limit state, on the safe side. On the other hand, current engineering practice employs finite element programs (such as PLAXIS) which, instead of using a conventionally-defined factor of safety, reduces the overall shear strength of the soil by introducing a reduction factor that is applied to soil strength (i.e. tan  and c values). Such fundamental differences in...
Citation Formats
G. Karakaya, “Comparison of solutions under a weighted Thcebycheff function,” presented at the 25th International Conference on MCDM (16 - 21 Haziran 2019), 2019, Accessed: 00, 2021. [Online]. Available: