Browsing Civil Engineering / İnşaat Mühendisliği by Issue Date
Now showing items 1-20 of 239
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Modeling deficit irrigation in alfalfa production
(American Society of Civil Engineers, 1995-11)A conceptual agronomic model EPIC was extended to consider the effects of salinity in alfalfa production under optimal and water stress irrigation conditions. The extended model was calibrated and validated with observed ... -
Propagation of waves in porous media
(Elsevier, 1996)Wave propagation in porous media is of interest in various diversified areas of science and engineering. The theory of the phenomenon has been studied extensively in soil mechanics, seismology, acoustics, earthquake ... -
Body waves in poroelastic media saturated by two immiscible fluids
(American Geophysical Union, 1996)A study of body waves in elastic porous media saturated by two immiscible Newtonian fluids is presented. We analytically show the existence of three compressional waves and one rotational wave in an infinite porous medium. ... -
Oil mound spreading and migration with ambient ground flow in coarse porous media
(American Geophysical Union, 1996-05)When a light, immiscible oil leaks above an unconfined aquifer, it spreads and forms a floating mound on the table. The oil mound migrates in the direction of ambient ground flow. In this study we present a governing ... -
Body waves in fractured porous media saturated by two immiscible Newtonian fluids
(Kluwer Academic Publishers, 1996-06)A study of body waves in fractured porous media saturated by two fluids is presented. We show the existence of four compressional and one rotational waves. The first and third compressional waves are analogous to the fast ... -
Wave propagation in fractured porous media
(Kluwer Academic Publishers, 1996-06)A theory of wave propagation in fractured porous media is presented based on the double-porosity concept. The macroscopic constitutive relations and mass and momentum balance equations are obtained by volume averaging the ... -
Consolidation of elastic porous media saturated by two immiscible fluids
(American Society of Civil Engineers, 1996-11)A theory is presented to simulate the consolidation of elastic porous media saturated by two immiscible Newtonian fluids. The macroscopic equations, including mass and momentum balance equations and constitutive relations, ... -
Areally-averaged overland flow equations at hillslope scale
(Taylor & Francis, 1998-06)Microscale-averaged inter-rill area sheet flow and rill flow equations (Tayfur and Kavvas, 1994) are averaged along the inter-rill area length and rill length to obtain local areally-averaged inter-rill area sheet flow and ... -
Modeling two-dimensional erosion process over infiltrating surfaces
(American Society of Civil Engineers, 2001-05)The physics-based modeling of the rainfall-runoff induced erosion process is accomplished. The existing one-dimensional erosion process equations are extended to two dimensions and kinematic wave approximation is used. The ... -
Applicability of sediment transport capacity models for nonsteady state erosion from steep slopes
(American Society of Civil Engineers, 2002-05)The physics-based sediment transport equations are derived from the assumption that the sediment transport rate can be determined by a dominant variable such as flow discharge, flow velocity, slope, shear stress, stream ... -
Genetic algorithm-artificial neural network model for the prediction of germanium recovery from zinc plant residues
(Maney Publishing, 2002-09)A multi-layer, feed-forward, back-propagation learning algorithm was used as an artificial neural network (ANN) tool to predict the extraction of germanium from zinc plant residues by sulphuric acid leaching. A genetic ... -
Artificial neural networks for sheet sediment transport
(Taylor & Francis, 2002-12)Sheet sediment transport was modelled by artificial neural networks (ANNs). A three-layer feed-forward artificial neural network structure was constructed and a back-propagation algorithm was used for the training of ANNs. ... -
Phase II benchmark control problem for seismic response of cable-stayed bridges
(Wiley, 2003-07)This paper presents the problem definition for the second generation of benchmark structural control problems for cable-stayed bridges. The goal of this study is to provide a testbed for the development of strategies for ... -
Phase I benchmark control problem for seismic response of cable-stayed bridges
(American Society of Civil Engineers, 2003-07)This paper presents the problem definition for the first generation of benchmark structural control problems for cable-stayed bridges. The benchmark problem is based on the Bill Emerson Memorial Bridge that is currently ... -
The use of GA-ANNs in the modelling of compressive strength of cement mortar
(Elsevier, 2003-07)In this paper, results of a project aimed at modelling the compressive strength of cement mortar under standard curing conditions are reported. Plant data were collected for 6 months for the chemical and physical properties ... -
Experimental and artificial neural network modeling study on soot formation in premixed hydrocarbon flames
(Elsevier, 2003-08)The formation of soot in premixed flames of methane, ethane, propane, and butane was studied at three different equivalence ratios. Soot particle sizes, number densities, and volume fractions were determined using classical ... -
Fuzzy logic algorithm for runoff-induced sediment transport from bare soil surfaces
(Elsevier, 2003-12)Utilizing the rainfall intensity, and slope data, a fuzzy logic algorithm was developed to estimate sediment loads from bare soil surfaces. Considering slope and rainfall as input variables, the variables were fuzzified ... -
Numerical model for sediment transport over nonplanar, nonhomogeneous surfaces
(American Society of Civil Engineers, 2004-01)Sediment transport on surfaces with spatially variable microtopography, roughness, and infiltration was investigated using the diffusion wave equation. An implicit finite-difference scheme together with multivariate Newton's ... -
Modeling freight distribution using artificial neural networks
(Elsevier, 2004-06)Studies about freight distribution modeling are limited due to the limitations in data availability. Existing studies in this subject, generally either use the conventional gravity models or the regression based models as ... -
Fuzzy logic model for the prediction of cement compressive strength
(Elsevier, 2004-08)A fuzzy logic prediction model for the 28-day compressive strength of cement mortar under standard curing conditions was created. Data collected from a cement plant were used in the model construction and testing. The input ...
