@article { author = {Mahgoub, S. E. and Abdel-Fattah, S. and Henafy, K.}, title = {EFFECT OF CONCRETE SILL ON THE VELOCITY DISTRIBUTIONS AT THE DOWNSTREAM OF BARRAGES}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1380-1395}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114859}, abstract = {The effect of concrete sills on the velocity distributions so as their magnitude and the navigation path at the downstream side of barrages is investigated. The research also intended to determine the beginning of the apron and its end. A 3-D physical model was constructed with a fixed bed. Bollin Barrage which is located at about 100 km north of Cairo, Egypt was chosen to be investigated. The barrage suffers from cracks in the lock bed and stresses on the bed of the opening adjacent to the lock that might topple it. An experimental program was designed to investigate several alternatives that might solve the cracks formation. The test program was divided into 4 phases. Each phase investigates 3 scenarios. Experiments were executed and measurements were taken. Measurements were represented and analyzed. Based on the experimental results, it is concluded that the normal velocity distributions and the values of the lateral currents are attained when a concrete sill with a thickness of 1.2 m and a slope of 1:3 at both sides of the sill was implemented. This sill enhanced the height and length of the hydraulic jump. Also, operating all vents gives better results, regarding the velocity distributions.}, keywords = {Concrete Sills,Velocity Distribution,Navigation Path,3-D Physical Model}, url = {https://jesaun.journals.ekb.eg/article_114859.html}, eprint = {https://jesaun.journals.ekb.eg/article_114859_e635b2c0705fb1420c001ed1ae934984.pdf} } @article { author = {Abdelhafiz, Ahmed and Abdel-Samea, Mohamad}, title = {GIS FOR HEALTH SERVICES}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1396-1405}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114860}, abstract = {Technology controls our life in almost all fields. Health services are one of these fields which are widely affected by the advances in spatial information technology. Spatial information technology includes Geographic Information Systems (GIS), Global Positioning Systems (GPS), remote sensing, and spatial data management. GIS helps planners in planning and monitoring health care facilities. This enables health authorities matching the facility supply with the relevant demand. Utilization of GIS spatial analysis also promotes the standards of health services. That is why health authorities give investment priority to improve health services employing GIS. Other Applications of GIS and GPS in emergency geographic information services and infection control are appeared. Using GIS in planning new health care facility opens multiple issues. These issues are the locality definition, spatial epidemiology, socio- economic status and health status taking into account age and sex variations in the area concerned. In this paper, the existing situation of public health care facilities in Assuit city, Egypt is assessed according to the guidelines of the Ministry of Health and Population in Egypt "MOHP".}, keywords = {GIS,health care facility,Assessment,Planning,Accessibility and Utilization}, url = {https://jesaun.journals.ekb.eg/article_114860.html}, eprint = {https://jesaun.journals.ekb.eg/article_114860_e23703a6595347c79b6f3c03adfa56dd.pdf} } @article { author = {HASHAD, AHMED S. and ABUKHASHABA, MOHAMED I.}, title = {SEISMIC EVALUTION OF CRACKED MASONRY BARRAGE PIERS REPAIRED WITH DIFFERENT METHODS}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1406-1420}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114862}, abstract = {The most common defects observed in masonry structures are cracking due to tensile stresses. Repairing process is needed to restore the structural capacity of the distressed masonry piers. Crack repair methods used in rehabilitation of water structures that have been built using clay bricks may affect the performance of those structures during their resistance to seismic loads. This research deals with evaluating the common methods used to repair major cracks of masonry piers. The evaluation process considered the performance of the repaired piers under the influence of seismic loads. Dynamic tests using shaking table with harmonic excitation were carried out to represent the effect of seismic loads. Therefore, the current paper investigates the dynamic structural performance of cracked masonry barrage piers, which are repaired using different techniques. Three different techniques are used for the purpose of repairing the cracked piers namely; epoxy pasted-repair, stapled using reinforced bars, and tied using pre-stressed technique. Four masonry piers were built on a shaking table and they were exposed to cyclic loads with different frequencies to simulate the earthquake. It was observed that the type of repair technique used affects the load carrying capacity of the piers and leads to a redistribution of the strains and hence stresses in repaired piers. All repair techniques are found to be able to restore or enhance the dynamic structural behavior for all the repaired piers that can stand against lateral loads with efficiency more than the uncracked pier. Guidelines for the assessment of the use of epoxy, reinforced and pre-stressed repair techniques in construction and strengthening of masonry barrages were suggested. For tied technique, some cautions must be considered when applied to overcome the base shear failure.}, keywords = {Masonry,piers,Earthquake,Crack Repair,Epoxy- Pasted,and Pre-Stressed}, url = {https://jesaun.journals.ekb.eg/article_114862.html}, eprint = {https://jesaun.journals.ekb.eg/article_114862_1d760209f7e42e9620f1cac3257309fa.pdf} } @article { author = {ElMashad, Mohie and HASHAD, AHMED S.}, title = {IMPROVING THE STRENGTH OF SANDY SILT SOILS BY MIXING WITH CEMENT KILN DUST}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1421-1431}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114863}, abstract = {Egyptian irrigation and drainage system consists of the River Nile, its branches, canals and drains. It is very important to keep them working in good condition to assure efficient water management and distribution process. Water channel embankments made of sandy silt soils are exposed to slope stability problems. These problems are considered one of the common canal embankments problems in the delta of Nile River. Soil improvement is one of the most economic engineering solutions to overcome soil problems. This research studying the improving of sandy silt soils by mixing with cement kiln dust. Laboratory tests were carried out to evaluate the improved soil properties. Three numerical models were built for an embankment of a canal to examine the introduced method to overcome slope stability problems. The natural soil slope stability safety factor was calculated from the first numerical model. The second model used to calculate safety factor after applying the improved soil properties that were determined from the laboratory works. The third numerical model was built to simulate improving natural soil by using the traditional soil reinforcement technique. The results for the two improvement methods were compared. The results showed that the proposed method caused significant improvement for slope stability of the sandy silt soil. The proposed method has the advantage of using with existing or new structures.}, keywords = {Soil improvement,soil mixing,Cement dust,Slope Stability,barrages}, url = {https://jesaun.journals.ekb.eg/article_114863.html}, eprint = {https://jesaun.journals.ekb.eg/article_114863_c9c087ce6f425818ac2224548c9a9191.pdf} } @article { author = {Abd-Elshafy, Aly G. Aly and Ramadan, Ahmed I. and Ahmed, Mahmoud H. and Abdel-Hafez, Atif M.}, title = {SHEAR RESPONSE INVESTIGATION OF HSRC DEEP BEAMS WITHOUT WEB REINFORCEMENT PART I: COMPARISON OF DESIGN EQUATIONS}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1432-1446}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114865}, abstract = {Currently, there is no general agreement on a theory describing the response of reinforced concrete members without web reinforcement. Many structural systems are usually performed using empirical or semi-empirical expressions provided by codes of practice that do not consider the influence of many governing parameters. In this paper, a comparison between values of current experimental shear strength and those of various international design approaches like ACI, Canadian, FIB and the method proposed by Sudheer, Zararis ,Zsutty ,Shah ,Bazant and Russo. Eighteen simple span high strength reinforced concrete “HSRC” deep beams without web reinforcement were tested and analyzed under two static point loads at mid-span of the beam to examine the contribution of various parameters on the shear capacity of HSRC beams. The main studied parameters are f‟cu=50 MPa, three values of tension reinforcement-ρ%-(0.73%,1.21% &1.83%) and shear span to effective depth ratio-a/d-( 2,1.5 &1). As a conclusion of this paper, ACI and FIB code provisions for shear in HSC are safe for use with the exception that CSA should be used with care. Despite numerous studies, there is still a need to develop a clear understanding of the shear behavior of HSC beams without web reinforcement. Therefore, this experimental program was arranged to evaluate the shear behavior and to increase the shear database on HSRC deep beams.}, keywords = {deep beams,High strength concrete,tension reinforcement ratio,shear span to effective depth ratio,Shear Strength}, url = {https://jesaun.journals.ekb.eg/article_114865.html}, eprint = {https://jesaun.journals.ekb.eg/article_114865_6adf866e44acfbb4029de08bf1a35b34.pdf} } @article { author = {Owais, M. M. and Moussa, Ghada and Abbas, Y A. and El-Shabrawy, Mohamed}, title = {OPTIMAL CIRCULAR BUS ROUTES PLANNING FOR TRANSIT NETWORK DESIGN PROBLEM IN URBAN AREAS}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1447-1466}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114867}, abstract = {This paper presents a deterministic solution methodology for Transit route Network Design Problem (TrNDP). The main objective is to design a set of bus routes minimizing both users and operator costs while satisfying some constraints; such as minimum demand trips coverage, maximum bus route length and route directness. The proposed methodology provides an efficient set of circular closed bus routes. The formulation of the methodology consists of three parts; 1- representation of transit route network and input data, 2- representation of transit route network objectives and constraints as mathematical programming, 3- the structure of the solution methodology for bus route design. The methodology structure has been tested through Mandl’s benchmark network problem. The test results showed that the methodology developed in this study is able to improve a given network solution in terms of number of constructed routes, transit service coverage, transfer directness, and solution reliability. Based on the presented methodology, a more robust network optimization tool would be produced for public transportation planning purposes.}, keywords = {Optimal transit network,Route design problem,Constructive algorithms}, url = {https://jesaun.journals.ekb.eg/article_114867.html}, eprint = {https://jesaun.journals.ekb.eg/article_114867_7cd9f62bbe3868dfede05dcf1a60ec04.pdf} } @article { author = {Saleh, B. Yosseif Mohamed}, title = {SLURRY EROSION-CORROSION RESISTANCE OF ELECTROLESS Ni-P PLATING ON AISI 5117 STEEL}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1467-1479}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114869}, abstract = {In this research, slurry erosion-corrosion and slurry-erosion resistances of electroless Ni-P coatings have been investigated. These coatings were applied on AISI 5117 steel discs by electroless deposition process and then they were heat treated at 650 C for 1 h. Slurry erosion-corrosion and slurry-erosion resistances of deposits were measured by the whirling-arm tester. Also, microstructure of deposits before and after heat treatment was evaluated by X-ray diffraction (XRD) analysis. The results showed that the electroless Ni-P plating greatly increased the erosion and erosion-corrosion resistances for all impact angles. Moreover, the effectiveness of plating was the highest for an impact angle of 45o, where the erosion and erosion-corrosion resistances were increased by 60% and 70% respectively, compared with that of the substrate. The results showed also that the coated and blank specimens behaved as ductile materials under erosion and erosion-corrosion tests and the maximum weight loss occurred at an impact angle of 45o.}, keywords = {Slurry erosion-corrosion,Ni-P coating,AISI 5117 steel}, url = {https://jesaun.journals.ekb.eg/article_114869.html}, eprint = {https://jesaun.journals.ekb.eg/article_114869_a33a1a3f844427deadc165aaeaf57059.pdf} } @article { author = {Attalla, M.}, title = {STAGNATION REGION HEAT TRANSFER DUE TO A TURBULENT CIRCULAR IMPINGING AIR JETS}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1480-1497}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114870}, abstract = {The heat transfer characteristics in a stagnation region were investigated experimentally for a five circular free jets impinging into a heated flat plate. The local temperature distribution, on a thin flat plate was measured using thermal infrared camera. To get precise heat transfer data over the plate, fully developed straight pipe jets were used in this study. Mean jet Reynolds number varies from 1000 to 45000 and vertical distance jet-to-plate, H/D, from 2 to 6, while the spacing jet-to-jet is, S/D, varies from 2 to 8. A geometrical arrangement of one jet surrounded by four jets in -line array was tested.}, keywords = {Stagnation point,Multiple Jets,heat transfer,Turbulent intensity}, url = {https://jesaun.journals.ekb.eg/article_114870.html}, eprint = {https://jesaun.journals.ekb.eg/article_114870_43e920029722df280bc265e38ac66af1.pdf} } @article { author = {Ghani, Amir R. A. and Hassan, M. A.}, title = {AXIAL CRUSH BEHAVIOUR OF SQUARE COLUMN WITH EXTERNAL TAPERED PLUNGER}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1498-1517}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114871}, abstract = {Thin-walled square columns are generally used as impact energy absorber in automotive structures due to their ease of fabrication and installation, high energy absorption capacity in terms of progressive plastic deformation and long stroke. However, the main drawback of standard square column is the high initial peak force. An external tapered plunger is proposed to overcome this shortcoming while at the same time, improving the impact performance. Static and dynamic axial crushing were performed by theoretical and finite element analysis to determine the initial peak force (IPF), crush force efficiency (CFE) and plastic specific energy absorption (SEA) of columns with external plunger of various taper angles. The simulations results were validated by experiments. It was found that the external plunger significantly enhanced the column impact performance and the deformation characteristics as well. Comparison with plain square column was carried out and it was found that the concentric plunger reduced the initial peak force and increased the crush force efficiency for both static and dynamic loading conditions.}, keywords = {Crush behavior,energy absorption,Progressive failure,Square column,Finite Element Analysis}, url = {https://jesaun.journals.ekb.eg/article_114871.html}, eprint = {https://jesaun.journals.ekb.eg/article_114871_c82097b9fdcec3faa2067b31198d1f08.pdf} } @article { author = {Mohammed, Abdullah and Nemat-Alla, Mahmoud M. and Emara, Karam M.}, title = {EFFECT OF FREQUENCY ON FATIGUE LIFETIME OF SBR AND NBR COMPOUNDS}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1518-1529}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114874}, abstract = {Fatigue behaviour of rubber is a very important characteristic due to its extensive use in many engineering applications. In most applications, rubber is commonly subjected to fluctuating loads, which often lead to failure due to the nucleation and growth of defects or cracks. Due to their viscoelastic behavior, rubbers have a high damping ability. Very often rubbers are subjected to different frequencies in the service, such as engine mounts. The effect of frequency on the fatigue lifetime needs deep investigations. In present work, the effect of frequency on the styrene butadiene (SBR) and nitrile-butadiene rubber (NBR) with 0,20,30,50 and 70 Phr of carbon black was investigated. It was found that the fatigue lifetime decreased with the increase of the frequency. Increasing carbon black (CB) contents in rubber improved the fatigue resistant and increased of the fatigue lifetime.}, keywords = {Rubber,Fatigue lifetime,Carbon black and Frequency}, url = {https://jesaun.journals.ekb.eg/article_114874.html}, eprint = {https://jesaun.journals.ekb.eg/article_114874_57a654a61e7a928f1b982bf29c776257.pdf} } @article { author = {Dhaiban, Abdullah A. and Soliman, M-Emad S. and El-Sebaie, M.G.}, title = {DEVELOPMENT OF DEEP DRAWING WITHOUT BLANK-HOLDER FOR PRODUCING ELLIPTIC BRASS CUPS THROUGH CONICAL DIES}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1530-1548}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114876}, abstract = {This paper introduces a new technique for deep drawing of elliptic cups through a conical die without blank holder or draw beads. In this technique an elliptical-cup is produced by pushing a circular blank using a flat-headed elliptic punch through a conical die with an elliptic aperture in a single stroke. A 3D parametric finite element (FE) model was built using the commercial FE-package ANSYS/APDL. Effects of die and punch geometry including, half-cone angle, die fillet radius, die aperture length and punch fillet radius on limiting drawing ratio (LDR), drawing load and thickness strain of the cup have been investigated. A die with half cone angle of 18° has shown the best drawability for the new technique. Finite element model results showed good agreement with experimental results. A die with an aspect ratio of 2 has been used with punches having aspect ratios ranging from 2 to 2.25. Tensile tests were carried out to obtain the stress-strain behavior for the used material. A total of seven punches were used for forming sheet metal of brass (CuZn33) with initial thicknesses of 1.5, 1.9, 2.4 and 3.2 mm at different clearance ratios (c/t). The effects of blank thickness and clearance ratio on limiting drawing ratio, drawing load and thickness strain were experimentally investigated. An elliptic cup with a limiting drawing ratio (LDR) of 2.26 has been successfully achieved.}, keywords = {Sheet metal forming,Deep drawing,Conical die,Elliptic cup,FEM,LDR}, url = {https://jesaun.journals.ekb.eg/article_114876.html}, eprint = {https://jesaun.journals.ekb.eg/article_114876_eb8b85057c7c68c0c9bdc8f6772ebb15.pdf} } @article { author = {Abdelrahman, Saad Awad and Samra, Mohamed El-Sayed Gomaa}, title = {HEAT TRANSFER ENHANCEMENT AND AIR POLLUTION REDUCTION OF EXHAUST GAS STREAM THROUGH SWIRLING RECUPERATOR JOINED WITH A CYCLONE-SCRUBBER}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1549-1563}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114877}, abstract = {In the present work, the heat transfer enhancement and air pollution reduction of exhaust gas stream through swirling recuperator fitted with a cyclone-scrubber are investigated respectively. The scrubbing works via the contact of target compounds or particulate matter with the scrubbing solution. Solutions were the water and the liquid solution (sodium carbonize + lemon salt) respectively. The results are compared with the same one with plain tubes recuperator. The twisted – tapes is optimized at twist ratios Y = 0.59 for the outer tube and Y = 0.74 for the inner tube. The rod of twisted tape is fixed on bearings to reduce pressure drop by the rotation. The experiments were carried out at Reynolds number from 8000 to 35000 of cold air enters the heat exchanger at 20ºC while the hot gases enter at 700 ºC. The experimental results indicated that the increase in heat transfer rate of the swirling flow is greater than its respective value of plain flow . The maximum mean Nusselt number increased by 181% than that of plain tube recuperator. The effects of the twisted tape on the heat transfer enhancement efficiency are also investigated. In the other side, the pollution of exhaust gases is greatly reduced by passing exhaust gases into cyclone-scrubber . The results indicated that the concentration of the poisonous gases flow out the cyclone-scrubber decreases by increasing the air velocity. A comparison results between the use of cyclone scrubber by water spray and chemical solution are investigated.}, keywords = {heat transfer,Swirling flow,Recuperator,Cyclon-Scrubber}, url = {https://jesaun.journals.ekb.eg/article_114877.html}, eprint = {https://jesaun.journals.ekb.eg/article_114877_c2cc7c479573a3a8ff17947adc657759.pdf} } @article { author = {Ismael, SH. M. and Khair-Aldien, W. M. and Kalil, A. A. and Nassr, A. A.}, title = {CHARACTERISTIC OF ANCHOR EMBEDDED ON CONCRETE UNDER DIFFERENT LOADING RATE}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1564-1580}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114881}, abstract = {The effect of anchor embedded length and impact load on the mechanical properties of adhesive concrete joint under different dynamic loading rate was studied [1]. Hopkinson pressure bar was used to apply dynamic load to specimens. Specimens with through hole and embedded anchor lengths of 2.5 cm and 5 cm were used in the study. The specimens were hit with strain wave induced using air pressure of 1 and 1.5 bar respectively. The result showed that as the embedded length decrease the maximum load of failure increase also as the pressure increase the specimen tend to absorb most of the wave in the adhesive joint. While as the load wave magnitude decrease the portion of the wave transmits to the concrete part of the specimen causing rupture or cracking of this part increase.}, keywords = {Epoxy,Anchor,Split Hopkinson Pressure bar,shock wave}, url = {https://jesaun.journals.ekb.eg/article_114881.html}, eprint = {https://jesaun.journals.ekb.eg/article_114881_c44be0afccae2242e1e3c3c19f26bc47.pdf} } @article { author = {Ouda, Mohamed A. and Salem, Sameh A.}, title = {PRIVACY-PRESERVING DATA MINING OF DISTRIBUTED DATABASES USING NAÏVE BAYES CLASSIFIER}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1581-1594}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114882}, abstract = {Privacy-preserving data mining is discovering accurate patterns and rules without precise access to the original data. In this paper, we propose a novel algorithm for privacy preserving data mining. The proposed algorithm is based on the integration of RSA public key cryptosystem and homomorphic encryption scheme. No data is shared between distributed parties except the final result. Data mining algorithm is performed locally for each party. The final result of all parties is compared to get the target value. Previous solution for privacy preserving data mining of Naive Bayes classifier is based on secure sum that may permit collusion between parties, which is not here in proposed solution. Theoretical analysis and experimental results show that the proposed algorithm can provide good capability of privacy preserving, accuracy and efficiency.}, keywords = {privacy preserving,Naive Bayes classifier,distributed databases,secure multiparty computation}, url = {https://jesaun.journals.ekb.eg/article_114882.html}, eprint = {https://jesaun.journals.ekb.eg/article_114882_46f1fd5af952bf9935cae79064543de6.pdf} } @article { author = {Ismail, M. Mahmoud and Hassan, M. A. Moustafa}, title = {INCOMING AND OUTGOING CT READINGS BASED AI TECHNIQUES FOR BUS BAR DIFFERENTIAL PROTECTION FAULTS ANALYSIS}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1595-1611}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114885}, abstract = {The application of artificial intelligent approaches was introduced recently in protection of distribution networks. In this paper, the application of Adaptive Neuron Fuzzy Inference System (ANFIS) as well as artificial Neural Network (ANN) for protection of bus bars will be illustrated. The objective of this paper is firstly, to detect the fault occurrence on bus bar, secondly location of the fault. The fault detection and location are firstly trained using ANN and ANFIS techniques and then they are tested in diversity of system conditions with respect to the fault types, inception instant, resistance and pre fault conditions. The fault detection and location units used current magnitude difference change at fault and Pre-fault conditions for incoming and outgoing CTs. The fault location unit in this paper is to detect if the fault occurs internally on the bus bar or externally. The protection system selection depends on the time as the system should take the correct action at fault condition, sending correct tripping signal for internal fault conditions and prevent the mal-operation due to external fault conditions. On other hand, the fault clearing time is very important issue to avoid more damage to power system equipments. From the simulation, it is found that the proposed system success to detect the fault and clarify the fault location at different fault cases within a short detection time than obtained in the previous work.}, keywords = {busbar prptection,AI techniques,current transformers}, url = {https://jesaun.journals.ekb.eg/article_114885.html}, eprint = {https://jesaun.journals.ekb.eg/article_114885_d90178dfef66b7f9cb170cedd3470f93.pdf} } @article { author = {Ismail, M. Mahmoud}, title = {PREDICTIVE MAINTENANCE BASED ON EARLIER FAULT DETECTION OF MULTI PHASE INDUCTION MACHINES USING NEURAL NETWORK ARTIFICIAL INTELLIGENT TECHNIQUES}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1612-1636}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114886}, abstract = {The area of multiphase variable-speed motor drives in general and multiphase induction Motor drives in particular have experienced a substantial growth since the beginning of this century. Research has been conducted worldwide and numerous interesting developments have been reported in the literature. An attempt is made to provide a detailed overview of the current state-of-the-art in this area. The elaborated aspects include advantages of multiphase induction machines, modeling of multiphase induction machines. This paper also provides a detailed survey of the control strategies for five-phase and asymmetrical six-phase induction motor drives for the saturated model of the induction motor. However all the old researches in this field are obtained using the approximate linear model of the induction machine which is not exactly accurate because that we are not guarantee that the motor operation is not in the saturation region . These results are also included for clarifying the behavior of the five and six phase using the saturated model of induction machine as an examples of the multi phase machine. Also this paper presents an approach to induction motor fault diagnosis and condition prognosis based on neural network and adaptive neuro-fuzzy inference systems (ANFIS). The ANFIS is a neural network structured upon fuzzy logic principles, which enables the neural fuzzy system to provide the motor condition and fault detection process. This knowledge is provided by the fuzzy parameters of member ship functions and fuzzy rules. By using the neural network and (ANFIS) techniques, we can detect and locate the inter-turn short circuit fault in the stator winding of an induction motor. Simulation results are presented to demonstrate the effectiveness of the proposed method.}, keywords = {Induction motor,Fault Detection,Neural network,ANFIS}, url = {https://jesaun.journals.ekb.eg/article_114886.html}, eprint = {https://jesaun.journals.ekb.eg/article_114886_b02ab5906a9dbe6e4ac3406d02d4f9d7.pdf} } @article { author = {Rabeei, Mustafa and Abbas, Hossam S. and Hassan, Mohamed M.}, title = {LPVIOID- A LPV IDENTIFICATION TOOLBOX FOR MATLAB: RECENT AND NOVEL TECHNIQUES}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1637-1659}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114890}, abstract = {In this paper a system identification toolbox for MATLAB is introduced, including a user friendly graphical user interface. The toolbox is appropriate for the identification of systems in discrete-time linear parameter varying (LPV) form. Using LPVIOID1 it is possible to identify input-output models in open-loop and closed-loop settings based on experimental data. It comprises several recent LPV identification techniques. Furthermore, a novel method for identifying unstable plants in closed-loop is proposed. The toolbox is equipped with several tools for model validation. Examples for illustration are included.}, keywords = {Linear parameter varying systems,system identification,non-linear modelling}, url = {https://jesaun.journals.ekb.eg/article_114890.html}, eprint = {https://jesaun.journals.ekb.eg/article_114890_a03d4691fcc8731b948885bfff50b37f.pdf} } @article { author = {Yousef, Ali}, title = {POWER SYSTEM CONTROLLER DESIGN BASED ON ROBUSTH2 THEORY}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1660-1674}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114893}, abstract = {This paper proposes a robust 2 H feedback controller design for damping power system oscillations over a wide range of operating conditions. Robust 2 H control technique based power system controller is developed for both excitation system and speed governor control. The effectiveness of the proposed power system controller is validated by a simple power system composed of a synchronous generator connected to an infinite bus through a transmission line. A comparison between power system responses at variety of operating conditions using the proposed H2 controller and Linear Quadratic Regulator LQR control is obtained. The digital simulation results prove the powerful of the proposed power system controller based on H2theory in terms of fast power system mechanical oscillation damping over a wide range of operating conditions with system uncertainty and parameters change.}, keywords = {H2 control Theory,LQR control,Synchronous generator}, url = {https://jesaun.journals.ekb.eg/article_114893.html}, eprint = {https://jesaun.journals.ekb.eg/article_114893_259e6b9e42e6bfd6b20990b4ef8d6d90.pdf} } @article { author = {Hasan, Mona Hassan and Ahmed, Mohamed Azmy and Youssef, Mamdouh Ali}, title = {THE SKY LINE AND ITS IMPACT IN THE VISUAL COMPOSITION OF ASSIUT CITY AS A CASE STUDY}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1675-1702}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114897}, abstract = {The Skyline is one of the important urban aspects and it has an important role in the image of the city. The technical progress and the vertical and horizontal extension of the city have a great effect of the character of this urban component. This study analyses theoretically the sky line aspects as (history - elements - effects - compositions and concepts). Mainly, the character of the sky line, as an urban factor, can be classified in three levels or sectors: the sky line of the Architecture Mass (Building), the sky line of the Architecture Groups (zones), and finally, the sky line of the City. This study emphasizes that the sky line character of Assiut city appears in two types: longitudinal skyline and the transversal one. Every one has its aspects, elements, composition and concepts.}, keywords = {}, url = {https://jesaun.journals.ekb.eg/article_114897.html}, eprint = {https://jesaun.journals.ekb.eg/article_114897_57e82d286f5b4fd0a34cb9d32460abdc.pdf} } @article { author = {Al-Shihri, Faez Saad}, title = {PRINCIPLES OF SUSTAINABLE DEVELOPMENT AND THEIR APPLICATION IN URBAN PLANNING IN SAUDI ARABIA}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1703-1727}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114898}, abstract = {Urban planning can play a very important role in achieving sustainable growth and development by integrating ‗sustainable development principles‘ in urban planning strategies, policies, programs and projects. There are diverse conceptualization and understanding regarding sustainability, and there is still no single format of integrating the principles of sustainability into a cohesive and integrated urban planning methodology. Various agencies and institutions have articulated the concepts and principles of sustainability at various levels and with a variety of depth and details. Based on the literature review this paper studies the emergence of the concept of sustainability, its dimensions and under-pining, and how urban planning practitioners and institutions have attempted to integrate the basic principles into their practices. The objective is to examine to what extent the government in the Kingdom of Saudi Arabia and its development agencies have internalized the prevailing notion of sustainability and the principles that entail the concept, particularly how the principles are embedded in development Planning strategies and policies. This paper consists of introduction and three parts: After the introduction, the Part One presents a selective review of the emergence and spread of the concept of sustainability to integrate the substantive principles in the planning practice. It discusses the application of sustainability principles in relation to urban development and planning in general. Then it summarizes some guidelines and related action programs provided by leading professional institutions in urban planning. The literature review part concluded with sustainability assessment criteria. Part Two outlines the institutional developments and national policies and commitments in the kingdom of Saudi Arabia in respect of sustainable development as stated in the 8th and 9th National Development Plans, National Spatial Strategy, and General Environmental Law. The review of Saudi experience concludes with an assessment summary showing to what extent sustainability principles have been incorporated in Saudi Arabian development planning strategies. Part Three concludes that Saudi Arabia has incorporated most of the major sustainable development principles extracted from the literature review. It highlights policies and programs for implementing the principles at regional and local levels by various urban development actors (the communities, public agencies, private firms and academia) and sectors such as housing, transportation and infrastructure, urban services, industrial and commercial land uses, etc. would go a long way in achieving sustainable urban development in Saudi Arabia. The paper is based primarily on the literature review and secondary data collected through a review of some previous studies, books, articles and local and international reports on the subject, including the basic terms and concepts as well as some important international experiences in sustainable development and urban planning.}, keywords = {Development,Sustainable Development,environment,pollution,Energy Use,land use,Urban Planning,Strategy,Policy,Action}, url = {https://jesaun.journals.ekb.eg/article_114898.html}, eprint = {https://jesaun.journals.ekb.eg/article_114898_0208cc1961e04d3bd12fca7ad71f2c67.pdf} } @article { author = {Hussein, M. A. and Ibrahim, A. R. and Imbaby, S.S.}, title = {LOAD CALCULATIONS AND SELECTION OF THE POWERED SUPPORTS BASED ON ROCK MASS CLASSIFICATION AND OTHER FORMULAE FOR ABU-TARTUR LONGWALL PHOSPHATE MINING CONDITIONS}, journal = {JES. Journal of Engineering Sciences}, volume = {41}, number = {No 4}, pages = {1728-1742}, year = {2013}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2013.114900}, abstract = {The safe operations at longwall face depend on the type and capacity of the powered roof supports. At Abu-Tartur longwall phosphate mine, two types of powered roof support with various capacities were tried earlier. The two leg shield power supports was applied finally. The main problem at Abu-Tartur longwall mines is the high frequency of roof rock falls during face advance. Roof collapse is due to an inadequate capacity of the chosen powered supports. So, in this paper the load exerted on the shield support is calculated by different methods and taking into consideration the actual roof conditions by rock mass classification system to select the suitable type of the supports. From these calculations, it is found that the average maximum pressure on the supports is about 416t/m with the yield pressure on the shield support of a value of 520t/m. Different items are recommended such as; increase the rate of the advance, exploit ore in two consecutive shifts, decrease the period of the face stoppage and small thickness about 30cm from phosphate ore should be left in the roof during exploitation to ensure stability during face advance. The following shearer is recommended to increase rate of face advance. The specification of this shearer are model Cat EL 3000/2011with typical length 15.2 m, seam thickness range from 2.5 to 5.5 m, cutting drum diameter up to 2.7 m, haulage speed up to 32 m per min, cutting drum speed 54.3 rpm and bits drum hardness up to 68.4 Mpa is to secure high rate of face advance. Shield support model Kottadih, CDFI,France, 2x470 is selected for Abu- Tartur mining conditions to support the face during working.}, keywords = {Rock Mass Classification,Geological Strength Index (GSI),Abu,Tartur longwall phosphate mine,Shield support,Shearers}, url = {https://jesaun.journals.ekb.eg/article_114900.html}, eprint = {https://jesaun.journals.ekb.eg/article_114900_dc37169175163ffc20df2ef89db83039.pdf} }