Search results for: A. Johari

Items from 1 to 20 out of 40 results

article

An analytical probabilistic analysis of slopes based on limit equilibrium methods

A. Johari, S. Mousavi

Bulletin of Engineering Geology and the Environment > 2019 > 78 > 6 > 4333-4347

Probabilistic analysis of slopes has been used as an effective tool to evaluate uncertainty that is so prevalent in variables. In this paper, the jointly distributed random variables (JDRV) method is used as an analytical method to compare the reliability of four widely used limit equilibrium methods for slope stability analysis. These methods include the simplified Bishop, simplified Janbu, Morgenstern–Price,...

article

An Analytical Approach to Probabilistic Modeling of Liquefaction Based on Shear Wave Velocity

A. Johari, A. R. Khodaparast, A. A. Javadi

Iranian Journal of Science and Technology, Transactions of Civil Engineering > 2019 > 43 > 1 > 263-275

Evaluation of liquefaction potential of soils is an important step in many geotechnical investigations in regions susceptible to earthquake. For this purpose, the use of site shear wave velocity (V_s) provides a promising approach. The safety factors in the deterministic analysis of liquefaction potential are often difficult to interpret because of uncertainties in the soil and earthquake parameters...

article

Reliability Analysis of Differential Settlement of Strip Footings by Stochastic Response Surface Method

A. Johari, A. Sabzi, A. Gholaminejad

Iranian Journal of Science and Technology, Transactions of Civil Engineering > 2019 > 43 > 1 > 37-48

The differential settlement of structures which are founded on soil is occurred due to heterogeneity of the soil, and it would not be beneficial to the serviceability of the structures. The heterogeneity of the soil can be implemented by qualified probabilistic analysis. This paper studies the reliability of differential settlement between two strip footings by stochastic finite element method (SFEM)...

article

Discussion on “Conditional random field reliability analysis of a cohesion-frictional Slope” by Lei-Lei Liu, Yung-Ming Cheng and Shao-He Zhang [Comput. Geotech. 82 (2017) 173–186]

A. Johari, A. Gholampour

Computers and Geotechnics > 2018 > 94 > C > 247-248

article

Reliability analysis of seismic bearing capacity of strip footing by stochastic slip lines method

A. Johari, S.M. Hosseini, A. Keshavarz

Computers and Geotechnics > 2017 > 91 > C > 203-217

In this research, the reliability analysis of seismic ultimate bearing capacity of strip footing is assessed with implementing slip lines method coupled with random field theory. The probability density functions of seismic and static bearing capacities which are log-normal and nearly normal distribution respectively are compared to each other. The predicted Probability Density Function (PDF) of the...

article

An Approach to Estimate Wetting Path of Soil–Water Retention Curve from Drying Path

A. Johari, A. Hooshmand Nejad

Iranian Journal of Science and Technology, Transactions of Civil Engineering > 2018 > 42 > 1 > 85-89

The Soil–Water Retention Curve (SWRC) is an important part of any constitutive relationship for unsaturated soils. The SWRC is a hysteretic curve, and geotechnical problems such as unsaturated slope stability analysis can lead to different results based on each branches. Although the majority of SWRC models can just predict the initial drying curve, the wetting path in many practical projects is critical...

article

OC-3c: Mechanism of thrombin generation in pregnant women

S.K. Ismail, A. Johari, J.R. Higgins, L. Norris

Thrombosis Research > 2017 > 151 > S1 > S105

article

System probabilistic model of rock slope stability considering correlated failure modes

A. Johari, A. Mehrabani Lari

Computers and Geotechnics > 2017 > 81 > C > 26-38

In this paper, a system reliability analysis of rock slope stability with considering all input parameters as stochastic parameter is presented. To perform reliability analysis a cut-set system has been used. For this purpose, Sequential Compounding Method (SCM) as a powerful method for reducing the computational time and accurate evaluation is employed to determine the reliability indices with considering...

article

System reliability analysis of rock wedge stability considering correlated failure modes using sequential compounding method

A. Johari, A. Mehrabani Lari

International Journal of Rock Mechanics and Mining Sciences > 2016 > 82 > C > 61-70

Probabilistic analysis of wedge failure has been used as an effective tool to evaluate inherent uncertainty of the variables. In this paper, a system reliability analysis of rock wedge stability is presented. To perform reliability analysis a cut-set system is used for wedge analysis. The reliability indices of the individual components and the correlations between the components are determined by...

article

Analytical stochastic analysis of seismic stability of infinite slope

A. Johari, A.R. Khodaparast

Soil Dynamics and Earthquake Engineering > 2015 > 79 > Part A > 17-21

The sliding of natural slopes is usually governed by combination of soil parameters and earthquake characteristics. The inherent variability of these parameters which affect seismic slope stability dictates that the problem is of a probabilistic nature rather than being deterministic. Stochastic analysis of slope seismic stability has received attention in the literature and has been used as an effective...

article

Stochastic analysis of ground response using non-recursive algorithm

A. Johari, M. Momeni

Soil Dynamics and Earthquake Engineering > 2015 > 69 > Complete > 57-82

During an earthquake, the amplitudes of seismic wave may amplify significantly as it propagates through the soil layers near the ground surface. Analysis of site amplification potential is strongly influenced by the uncertainty associated to the definition of soil thickness and its properties. In this paper, the non-recursive algorithm is used in linear and nonlinear Hybrid Frequency Time Domain (HFTD)...

chapter

Earthing Current Signature Analysis in resolving Motor Protection Relay communication fault

Mohd Riduan Mohd Shariff, M.F.L. Abdullah, Z.A. Haron, A. Johari, more

2014 IEEE International Conference on Power and Energy (PECon) > 400 - 405

2014 IEEE International Conference on Power and Energy (PECon)

In today's advanced communication, electronic and electrical technology, the used of Motor Protection Relay (MPR) has become preferred. MPR will help maintenance engineers in controlling, protection and monitoring of the electric motors. Therefore, the history event recorded by the MPR enables the implementation of the predictive maintenance. In addition to this advance technology, there appeared...

chapter

Performance of biodegradable insulating oil under accelerated thermal ageing

A. Johari, A.A. Suleiman, N. Bashir, N.A. Muhamad, more

2014 IEEE International Conference on Power and Energy (PECon) > 9 - 12

2014 IEEE International Conference on Power and Energy (PECon)

Biodegradable insulation oils are gaining acceptable use in power transformers as alternative to the successfully petroleum-based oil. In general all insulation oils must be good as insulators and as well as being good heat exchange media. The ability of the insulation oil to remain physically and chemically stable under thermal stress defines the quality of the oil. Based on this expectation, this...

article

Lateral load bearing capacity modelling of piles in cohesive soils in undrained conditions: An intelligent evolutionary approach

A. Ahangar-Asr, A.A. Javadi, A. Johari, Y. Chen

Applied Soft Computing > 2014 > 24 > Complete > 822-828

The complex behaviour of fine-grained materials in relation with structural elements has received noticeable attention from geotechnical engineers and designers in recent decades. In this research work an evolutionary approach is presented to create a structured polynomial model for predicting the undrained lateral load bearing capacity of piles. The proposed evolutionary polynomial regression (EPR)...

article

Accident prevention approach throughout process design life cycle

K. Kidam, N.E. Hussin, O. Hassan, A. Ahmad, more

Process Safety and Environmental Protection > 2014 > 92 > 5 > 412-422

The accident rate in the chemical process industry (CPI) has not been decreasing although majority of accident causes have been identified and could have been prevented by using existing knowledge. These recurring accidents show that the existing knowledge has not been used effectively. In this paper, accident knowledge learned from earlier accident analyses are utilized to predict the common design...

article

Variation of the crystal growth of mesoporous silica nanoparticles and the evaluation to ibuprofen loading and release

N.H.N. Kamarudin, A.A. Jalil, S. Triwahyono, V. Artika, more

Journal of Colloid And Interface Science > 2014 > 421 > Complete > 6-13

Mesoporous silica nanoparticles (MSNs) were synthesized with variable microwave power in the range of 100–450W, and the resulting enhancement of MSN crystal growth was evaluated for the adsorption and release of ibuprofen. X-ray diffraction (XRD) revealed that the MSN prepared under the highest microwave power (MSN ₄₅₀ ) produced the most crystallized and prominent mesoporous structure. Enhancement...

chapter

Impact of EMI filter installed in AC UPS system to earth leakage current

M Riduan B. M Shariff, M. F. L. Abdullah, M Yusop B. A Latiff, Ghazali B. M Tion, more

2014 IEEE 8th International Power Engineering and Optimization Conference (PEOCO2014) > 647 - 652

2014 IEEE 8th International Power Engineering and Optimization Conference (PEOCO)

In today's advanced communication, electronic and electrical technology, the used of Electromagnetic Interference (EMI) filter has almost become mandatory. Therefore it requires careful and high attention on the impact of this EMI filter installation. This paper discussed and explained the application of Earthing Current Signature Analysis (ECSA) as new developing technique in determining the earth...

article

Thermodynamic Analysis of Hydrogen Production from Ethanol-glycerol Mixture Through Dry Reforming

Z.Y. Zakaria, M. Jusoh, A. Johari, M.A.A. Zaini, more

Energy Procedia > 2014 > 61 > Complete > 2391-2394

Thermodynamic properties of ethanol-glycerol dry reforming have been studied with the method of Gibbs free energy minimization for hydrogen production from ethanol-glycerol mixture. Equilibrium compositions were determined as a function of CO ₂ /ethanol-glycerol molar ratios (CEG)(1:1-12:1) where ethanol-glycerol is 1:1; reforming temperatures (573-1273 K) at different pressures (1-50 bar)...

article

Modelling of probability liquefaction based on standard penetration tests using the jointly distributed random variables method

A. Johari, A.R. Khodaparast

Engineering Geology > 2013 > 158 > Complete > 1-14

Soil liquefaction during an earthquake can be a major cause of damage to structures. The inherent variability of the soil parameters which affect liquefaction potential dictates that the problem is of a probabilistic nature rather than being deterministic. Probabilistic assessment of liquefaction potential has received considerable attention in the past few years. In this research, the Jointly Distributed...

article

An investigation into application of jointly distributed random variables method in reliability assessment of rock slope stability

A. Johari, A. Fazeli, A.A. Javadi

Computers and Geotechnics > 2013 > 47 > Complete > 42-47

Analysis of stability of rock slopes is a branch of rock engineering that is highly amenable to probabilistic treatment. Probabilistic analysis of rock slope stability has been used as an effective tool to evaluate uncertainty so prevalent in variables and has received considerable attention in the literature. In this research the application of the Jointly Distributed Random Variables (JDRVs) method...

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Keywords

LOGICAL EFFORT (6)
PARTICLE SWARM OPTIMIZATION (6)
AUTOMATED CIRCUIT DESIGN (5)
JOINTLY DISTRIBUTED RANDOM VARIABLES METHOD (5)
ADDERS (4)
MONTE CARLO SIMULATION (4)
DELAY (3)
LOGIC GATES (3)
OPTIMIZATION (3)
PARTICLE SWARM OPTIMISATION (3)
RELIABILITY (3)
TRANSISTORS (3)
UNSATURATED SOIL (3)
ACCIDENTS (2)
CAPACITANCE (2)
CMOS LOGIC CIRCUITS (2)
CORRELATED FAILURE MODES (2)
DATA MINING (2)
ELECTROMAGNETIC INTERFERENCE (2)
GROUNDING (2)
LIQUEFACTION (2)
MICROCONTROLLERS (2)
MUTATIVE PARTICLE SWARM OPTIMIZATION (2)
RANDOM FIELD (2)
RIPPLE CARRY ADDER (2)
ROCK SLOPE STABILITY (2)
SENSORS (2)
SEQUENTIAL COMPOUNDING METHOD (2)
STOCHASTIC ANALYSIS (2)
8-STAGE FULL ADDER CIRCUIT (1)
ACOUSTICS (1)
AGEING (1)
AGING (1)
AGRICULTURE (1)
AIR FACTOR (1)
AIR POLLUTION (1)
ANTENNAS (1)
ASSEMBLY LANGUAGE (1)
AUTOMATED COMPLEMENTARY METAL OXIDE SEMICONDUCTOR LOGIC CIRCUIT (1)
AUTOMOBILES (1)
AUTONOMOUS ROBOT (1)
BUILDINGS (1)
CAPACITORS (1)
CAR ACCIDENT (1)
CELLULOSE ACETATE (1)
CHIP FABRICATION (1)
CIRCUIT FAULTS (1)
CIRCUIT OPTIMISATION (1)
CIRCUIT TESTING (1)
CIRCUIT TOPOLOGY (1)
CMOS LOGIC CIRCUIT DESIGN (1)
COMMUNICATION CABLES (1)
COMMUNICATION FAULT (1)
COMPUTER MODELS (1)
CONFERENCES (1)
CONSTITUTIVE MODELLING (1)
COST REDUCTION (1)
COSTS (1)
CUT-SET SYSTEM (1)
DELAY CIRCUITS (1)
DELAY EFFECTS (1)
DELAY ESTIMATION (1)
DELAY REDUCTION (1)
DIFFERENTIAL SETTLEMENT (1)
DIGITAL VEHICLE DISTANCE MONITORING SYSTEM (1)
DISTANCE METER (1)
DRIVER CIRCUITS (1)
DRIVER INFORMATION SYSTEMS (1)
DRUG DELIVERY (1)
DRY REFORMING (1)
EARTH (1)
EARTH LEAKAGE (1)
EARTHING CURRENT (1)
ELECTRICITY (1)
ELECTRONIC CIRCUIT (1)
ELECTRONIC CIRCUITS (1)
EMC (1)
EMI (1)
ENVIRONTEMP FR3 (1)
EQUIVALENT LINEAR SAFETY MARGIN (1)
ERRORS (1)
ETHANOL-GLYCEROL MIXTURE (1)
EVOLUTIONARY COMPUTATION (1)
EVOLUTIONARY COMPUTING (1)
EVOLUTIONARY DATA MINING (1)
FABRICATION (1)
FEED-IN-TARIFF (1)
FIRST ORDER SECOND MOMENT METHOD (1)
FLUIDIZATION NUMBER (1)
FLUIDIZED BED (1)
FTIR (1)
FULL ADDER CIRCUIT (1)
FULLADDER (1)
GATE SIZING (1)
GENETIC ALGORITHM (1)
GENETIC-BASED MODEL (1)
GEOTECHNICAL MODELS (1)
GREEN PRODUCTS (1)
GROUND RESPONSE (1)
HALF ADDER CIRCUIT (1)
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Elsevier (20)
ieee (14)
Springer (6)

INFONA - science communication portal

Search results for: A. Johari

An analytical probabilistic analysis of slopes based on limit equilibrium methods

An Analytical Approach to Probabilistic Modeling of Liquefaction Based on Shear Wave Velocity

Reliability Analysis of Differential Settlement of Strip Footings by Stochastic Response Surface Method

Discussion on “Conditional random field reliability analysis of a cohesion-frictional Slope” by Lei-Lei Liu, Yung-Ming Cheng and Shao-He Zhang [Comput. Geotech. 82 (2017) 173–186]

Reliability analysis of seismic bearing capacity of strip footing by stochastic slip lines method

An Approach to Estimate Wetting Path of Soil–Water Retention Curve from Drying Path

OC-3c: Mechanism of thrombin generation in pregnant women

System probabilistic model of rock slope stability considering correlated failure modes

System reliability analysis of rock wedge stability considering correlated failure modes using sequential compounding method

Analytical stochastic analysis of seismic stability of infinite slope

Stochastic analysis of ground response using non-recursive algorithm

Earthing Current Signature Analysis in resolving Motor Protection Relay communication fault

Performance of biodegradable insulating oil under accelerated thermal ageing

Lateral load bearing capacity modelling of piles in cohesive soils in undrained conditions: An intelligent evolutionary approach

Accident prevention approach throughout process design life cycle

Variation of the crystal growth of mesoporous silica nanoparticles and the evaluation to ibuprofen loading and release

Impact of EMI filter installed in AC UPS system to earth leakage current

Thermodynamic Analysis of Hydrogen Production from Ethanol-glycerol Mixture Through Dry Reforming

Modelling of probability liquefaction based on standard penetration tests using the jointly distributed random variables method

An investigation into application of jointly distributed random variables method in reliability assessment of rock slope stability

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