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A generalized model is presented for a subgrade idealized as an elastic layer overlying a rigid base. In contrast to previous works no stresses strains or displacements are neglected a priori. Asrat Worku Civil Engineering Department Addis Ababa University P. O. Box 385 Addis Ababa Ethiopia . Email email protected https
A calibrated continuum foundation model of the same order as those of Pasternak FilonenkoBorodich and Vlasov is developed. This is achieved by seeking equality of the surface deformation of a Pasternaktype model with that of a calibrated Kerrtype
Addis ababa university Cited by 144 geotechnical engineering
Accessibility to and utilization of maternal neonatal and child health (MNCH) services by rural women A case study of health centres in Mutare district based on the 3 delays model. JulyDecember 2022 Vol 14 Num. 2. High maternal neonatal and child mortality rate constituting about 70 of the population in Zimbabwe.
inproceedings Worku2010PartIA title= Part II Application of Newly Derived and Calibrated Continuum Subgrade Models in the Analysis of Beams on Elastic Foundations author= Asrat Worku and Yimer Degu year= 2010 A. Worku Yimer Degu Published 15 February 2010 Engineering
In contrast mechanical models idealize the subgrade as an assemblage of a few mechanical elements (FilonenkoBorodich 1950 Hetenyi 1950 Horvath 2002 Kerr 1964 Kerr and Rhines 1967 Pasternak
Patients perceptions of the usability utility and impact of a sameday selfadministered routine electronic patientreported outcomes (PRO) assessment in HIV care in two North American clinics
WINKLER S SINGLEPARAMETER SUBGRADE MODEL FROM THE. PERSPECTIVE OF AN IMPROVED APPROACH OF CONTINUUMBASED SUBGRADE MODELING. Asrat Worku Department of Civil Engineering Addis Ababa University. ABSTRACT p( x y ) = k s w0 ( x y ) in which p is the vertical
A Cox proportional hazard with a linear mixed effect model was jointly modeled and 95 Cl was used to select significant variables. AIC and BIC were used for model comparison. RESULT A total of 539 diabetes patients were followed for a total of personmonth observations. Overall 65 ( ) patients developed diabetic foot ulcers with
Variants of a new continuum subgrade model presented by the first author (Part I) are employed to analyze beams on elastic foundations. When the higher order model variants are used the beam s differential equation becomes of order six. Asrat Worku Civil Engineering Department Addis Ababa University P. O. Box 385 Addis Ababa
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The performance of the subgrade model employed is compared with other existing simplified subgrade models and with PLAXIS itself over a wide range of cases. The results show that the proposed model performs better than the models it was compared with and can be easily adjusted to yield results in good agreement with the FE outputs over the
Rectangular Raft Foundations for a New Two Parameter Subgrade Model By Gebreegziabher Gebretnsea Advisor Asrat worku (Dr .Ing.) A Thesis submitted at Addis Ababa Institute of Technology in partial fulfillment of the requirements for the Degree of Master of Science in Geotechnical Engineering.
asrat worku subgrade models Popular Searches. Vol 6 No 13 (2015) iisteorg Know More. Ermias Belete Asrat Worku 151154 The Impact of Human Capital Development on Economic Growth in Ethiopia Evidence from Bounds testing and ARDL Models PDF Assessment of agreement between a new electronic scale and Know More
Asrat WORKU Cited by 91 of Addis Ababa University Addis Ababa (AAU) Read 15 publications Contact Asrat WORKU Variants of a new continuum subgrade model presented by the first author
Asrat Worku Addis Ababa University Civil Engineering Department Faculty Member. Studies Slope Stability SoilStructure Interaction and Foundation/subgrade Modeling. Asrat is a civil engineer who combines practice with academia with over 35 years A robust twoparameter subgrade model presented recently by the first author is employed to
Dec 3 2021Asrat Worku Civil and Environmental Engineering Department Addis Ababa Institute of Technology Addis Ababa University A variety of mechanical and continuum subgrade models ranging from the simplest Winkler model to the more complex ones were proposed in the past to address the problem of foundations on elastic subgrades. Most of them are
A generalized model is presented for a subgrade idealized as an elastic layer overlying a rigid base. In contrast to previous works no stresses strains or displacements are neglected a priori. A secondorder partial differential equation is obtained Asrat Worku. Download
Geographically the watershed lies at 12°32 16 =12°35 20 = N latitudes and 37°03 58 =37°06 23 = E longitudes with an area of km 2 and elevations ranging from 1910 and 2267 . Geologically the study area is covered with thick trap series volcanic rocks consisting mainly of weathered and jointed basalt and the soils were developed from the parent materials
Compared with grouped regression models the fixedeffect regression model has higher fitting accuracy and a better regression coefficient significance. The quick independent variable selection method can shorten the time of establishing the model and determine the influencing factors of the research object effectively.
According to Worku et al. (2005) conservation tillage gave higher teff seed yield than the conventional tillage in the Central Rift Valley while zero tillage was effective in controlling noxious weeds due to preplanting and postplanting herbicide application. The teff yield was increased by 2025 when tillage frequency was reduced.
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