@article { author = {El-Amin, F.M. and Abdel-Khalek, M.F. and Ahmed, M.M. and Gad, S.R.}, title = {NONLINEAR BEHAVIOR OF CANTILEVER GIRDERS WITH CORRUGATED STEEL WEBS}, journal = {JES. Journal of Engineering Sciences}, volume = {36}, number = {No 6}, pages = {1319-1338}, year = {2008}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2007.119574}, abstract = {The shear behavior of cantilever girders with corrugated steel webs has been investigated here experimentally and analytically. Three cantilever beams with corrugated steel webs were tested to failure under shear; the failure was due to buckling of the web. Computer program COSMOS/M 2.8 was used to perform nonlinear analysis to the models of the test specimens to determine ultimate load of these girders. Proposed interaction equation, which based on local buckling of the corrugation fold as isotropic flat plates, global buckling of the entire web panels as an orthotropic plate, and steel yielding of the web is presented. It was noted from the experimental and the analytical results that buckling of the web is local or global for the coarse or dense corrugation, respectively. Comparisons between the results from the proposed equation, the finiteelement analysis, and the tests are satisfactory.}, keywords = {Experimental tests,Finite element method,cantilever girders,corrugated steel webs,global buckling mode,local buckling,Nonlinear Analysis}, url = {https://jesaun.journals.ekb.eg/article_119574.html}, eprint = {https://jesaun.journals.ekb.eg/article_119574_45460a6e4034083b99f35543deb552c6.pdf} } @article { author = {Dhaimat, O.}, title = {STUDY OF WATER ROLE TOWARDS JORDAN VALLEY DEVELOPMENT BY RS AND GIS}, journal = {JES. Journal of Engineering Sciences}, volume = {36}, number = {No 6}, pages = {1339-1346}, year = {2008}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2007.119575}, abstract = {Jordan an example of semi arid region in the Middle East has serious problems that related to the shortage of water resources and agriculture yield which leads to the incremental of desert area of the whole territory. The Jordan valley stills the resource of vegetations and cash crops because of water availability that coming through ghore canal from Yarmouk River. Remote sensing technique and geographic information system were the tool of collecting, analysis, and output data in short time and real mood. Besides that, science, technology, management, and money are the major parameters that affect the development of present study, if they are applied well by researchers, planners, and decision makers}, keywords = {Semi arid,Jordan Valley,Ghore canal,RS,GIS,TM,Vegetation,and cash crops}, url = {https://jesaun.journals.ekb.eg/article_119575.html}, eprint = {https://jesaun.journals.ekb.eg/article_119575_adbd9c85095b87bdc78f99d63c509a0e.pdf} } @article { author = {A. Naji, Jamil}, title = {ASSESSMENT OF DIFFERENT TRAFFIC MANAGEMENT SCENARIOS USING MICROSCOPIC SIMULATION: A CASE STUDY}, journal = {JES. Journal of Engineering Sciences}, volume = {36}, number = {No 6}, pages = {1347-1360}, year = {2008}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2007.119576}, abstract = {This paper presents the results obtained from microscopic traffic simulation study conducted to evaluate different traffic management scenarios (alternatives) for congested links in the capital city of Sana'a. The main objective of implementing simulation technique is to assist decision makers to select the most suitable solution to manage the problem of traffic congestion in effective and scientific manner and less cost for one of the busiest roads in the capital city of Sana’a. Different real-life implementations of four types of traffic management scenarios were carried out. This includes Do Nothing, convert curb parking lane to effective traffic lane, waving/shifting public traffic vehicles (microbuses) to other routs outside the studied road and redesign the traffic signals. The Do Nothing scenario was considered as control/reference scenario. The improving or worsening due to implementation different scenarios was measured by comparing results from studied scenarios to that of the reference scenario. Results were extracted from the simulation output reports and the selection of the most suitable scenario was based on a set of quantitative evaluation criteria. This includes delay time, travel time, flow, speed and fuel consumption. Based on the criteria used the succeed scenario was recommended for implementation. The scenarios being most effective were converting the curb parking lane to effective traffic lane and shifting public microbuses to other routs. Although there is no significant difference between these two scenarios, the first one was recommended due to its simplicity, lower cost of implementation and convenience to road users.}, keywords = {Microscopic traffic simulation,traffic congestion,delay time,Travel time,flow and speed}, url = {https://jesaun.journals.ekb.eg/article_119576.html}, eprint = {https://jesaun.journals.ekb.eg/article_119576_2bf68516c0f4b6afca1406c2a66f8e24.pdf} } @article { author = {M. Heniegal, Ashraf}, title = {OPTIMUM COMPONENTS AND PROPORTIONS FOR SELF COMPACTING CONCRETE IN SULFATES ENVIRONMENT}, journal = {JES. Journal of Engineering Sciences}, volume = {36}, number = {No 6}, pages = {1361-1377}, year = {2008}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2007.119577}, abstract = {The purpose of this paper was to know more about self-compacting concrete (SCC) in sever sulfate environment compared with its reference vibrated concrete (VC) with similar mixes proportions of SCC for different ages up to 400 days. Such tests can be more reliable in evaluating emerging concrete types such as self consolidating concrete (SCC). Several applications of SCC involve its exposure to both freezing– thawing cycles and chemical attack, particularly to sulfate-rich media. Sixteen mixes of SCC and VC were therefore made with the same raw materials with changing some factors in the mix such as: cement content, coarse to fine aggregates proportions, coarse aggregate size, coarse aggregate type and cement type. After 28 days of potable water curing, a standard compressive tests was carried out for all samples of both SCC and VC then they were immerged in sodium sulfates solution with 5% concentration according to (ASTMC 1012). The specimens were cyclically exposed to 5% Na2SO4 solution and air every alternate 5 days after 28 days curing by potable water. Age factor till 400 days have been also considered in this research. In addition, fresh properties of SCC and VC are recorded for all concrete mixes. The results of this research show that the compressive strength for SCC mix gave a significant reliable results compared with VC where all subjected to a cyclic immersion in 5% sodium sulfates. However, more factors in the component of SCC mixes. Factors such as cement content and type, aggregate type, size and ratio and powder type were studied for SCC component. Results indicated that SCC exhibited more residual strength compared with VC especially utilizing high cement content of Sulfate Resistance Cement (SRC) type, basalt as coarse aggregate, with maximum nominal size 10 mm with ratio coarse to fine aggregate (C/F) =0.35:0.65 utilizing Silica Fume (SF) type in addition to superplastisizer and viscosity enhancement admixture VEA.}, keywords = {Self-compacting Concrete,sulfate attack,Durability,Aggregate Type,Compressive strength,Residual strength}, url = {https://jesaun.journals.ekb.eg/article_119577.html}, eprint = {https://jesaun.journals.ekb.eg/article_119577_8c07c5d44b1f5b7d640e40862f1b8d48.pdf} } @article { author = {Mohamed, Abdou Khalaf and Elamary, A. S. and Ahmed, M. M.}, title = {FLEXURAL BEHAVIOR OF OVER REINFORCED HSC BEAMS CONFINED BY RECTANGULAR TIES}, journal = {JES. Journal of Engineering Sciences}, volume = {36}, number = {No 6}, pages = {1379-1398}, year = {2008}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2007.119578}, abstract = {This paper presents an experimental and analytical investigation on the flexural behavior of over reinforced concrete beam confined by rectangular ties. The experimental investigation was conducted through testing four full-scale beams with normal strength concrete (NSC). Three out of these four beams were confined using rectangular ties located on the compression region of the beams. The variables studied in these specimens were the volumetric ratio of transverse reinforcement, and the volumetric ratio of the main rebars. A finite element model was established with both material and geometrical non-linearity by using ANSYS software package. Accuracy of the model was assessed by applying it to the three tested beams. Comparison of analytical results with the available experimental results for ultimate load values and load– deflection relationships show a good agreement between the finite element and experimental results. After validating the accuracy of the proposed model, parametric study was undertaken to gain additional insight into the overall behaviour, failure modes, and deformation capacity for the concrete beams using high class concrete strength. The parameters studied were, the concrete compressive strength, the number and diameter of longitudinal rebars, and diameter of rectangular ties. The obtained results show that, the strength and ductility of high strength concrete (HSC) beams are enhanced through the application of rectangular tie reinforcement located in the compression region of the beams. The concrete compressive strength, the longitudinal bars number and diameter, and the diameter of rectangular ties are important parameters controlling the level of strength and ductility enhancement of overreinforced HSC beams.}, keywords = {high-strength concrete,confined concrete beam,Flexural behavior}, url = {https://jesaun.journals.ekb.eg/article_119578.html}, eprint = {https://jesaun.journals.ekb.eg/article_119578_64d79e2bb07c745886017a8dc1e55518.pdf} } @article { author = {ELBABLY, M. E.}, title = {ADAPTIVE ALGORITHM FOR ROUTING AND PLACEMENT IN FPGA}, journal = {JES. Journal of Engineering Sciences}, volume = {36}, number = {No 6}, pages = {1499-1511}, year = {2008}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2007.119579}, abstract = {The design of the placement and routing for an FPGA (whether it’s a traditional or coarse grained field programmable gate arrays) is very important process, requiring the care about the flexibility with silicon efficiency. With the motivation growing towards embedding FPGAs into SoC (system on chip) designs, final requirements for the FPGA architectures becomes more critical. The identification of a routing channel requires determining the number of routing paths (tracks), the length of the segments in those paths, and the positioning of the breaks on the paths. We have developed an optimal algorithm to alleviate the routing and placement problem. This research focuses on the maximization of the flexibility and expandability to achieve the final placement with the convenient path(s) (routing). The optimal algorithm finds a solution provided the problem meets a number of restrictions such as busy or faulty path(s) in the routing process and applying the partial configuration to reduce the configuration time to achieve the required placement.}, keywords = {Embedding FPGAs into SoC designs,routing and placement approaches,electronic design automation (EDA) and algorithms design}, url = {https://jesaun.journals.ekb.eg/article_119579.html}, eprint = {https://jesaun.journals.ekb.eg/article_119579_d0335ee19f1712310a1b7a0ea9e9a7b5.pdf} } @article { author = {Nabil Shaban, Dina and H. Ibrahim, Maged and B.Nossair, Zaki}, title = {ENHANCED VERIFIER-BASED PASSWORD AUTHENTICATED KEY AGREEMENT PROTOCOL FOR THREE-PARTIES}, journal = {JES. Journal of Engineering Sciences}, volume = {36}, number = {No 6}, pages = {1513-1522}, year = {2008}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2008.119612}, abstract = {Most of password authenticated key agreement protocols have focused on the two-party setting where two communicating parties share a password. However, in the two-party setting any user may want to communicate with other users who have not shared the same password. In this paper we present an efficient verifier-based password authenticated key agreement protocol for three-parties. In the three-party setting each user only shares a password with a trusted server which authenticates two users and helps the users with different passwords share a common session key. Our proposed protocol is secure against several attacks and provides perfect forward secrecy.}, keywords = {authentication,Cryptanalysis,key agreement,password,three-party}, url = {https://jesaun.journals.ekb.eg/article_119612.html}, eprint = {https://jesaun.journals.ekb.eg/article_119612_391440e451d87a7c8fbb48fd78b83174.pdf} } @article { author = {El-Sadek, M. Z. and Abdlwahab, M. A. and Alkosy, A. A. and Hemeida, A. M. and Younies, S. A.}, title = {CALCULATIONS OF THE CONTROLLER LOAD IN COMPUTER CONTROL NETWORK USING PROBABILITY THEOREM}, journal = {JES. Journal of Engineering Sciences}, volume = {36}, number = {No 6}, pages = {1523-1534}, year = {2008}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2008.119777}, abstract = {This paper presents the calculation of the controller load of computer control network in a real system. The Calculation of the controller load is very important in order to aid the designer engineer to choose the suitable capacity of the controller for data size. The probability theorem is used to investigate the process of load calculation. The interpolation technique is used to get the function of the required data for the studied system. The calculated value is compared with the measured value to investigate the reality of the proposed method in calculating the load controller using probability theorem. The comparative study between the measured value and calculated value indicate the efficiency of the proposed technique.}, keywords = {Distributed Control System,Controller Load,Probability Theorem}, url = {https://jesaun.journals.ekb.eg/article_119777.html}, eprint = {https://jesaun.journals.ekb.eg/article_119777_7616d6a21f2ee73a8e8467283fac9f1f.pdf} } @article { author = {El-Amin, A. A. and Hassan, M. K.}, title = {STUDY OF MIS MULTICRYSRALINE SILICON THIN-FILM SOLAR CELL}, journal = {JES. Journal of Engineering Sciences}, volume = {36}, number = {No 6}, pages = {1399-1411}, year = {2008}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2008.119779}, abstract = {State-of-the-art of multicrystalline Silicon (mc-Si) material with minority carrier diffusion lengths exceeding the wafer thickness is commercially available today. It is expected that the diffusion length to wafer thickness ratio will be increasing further due to improved material quality and due to the trend towards thinner wafers to reduce material costs. As a result, the open circuit voltage, Voc decreases with increasing temperature according the ratio Voc/T = 0.00337 mVK-1. The output power decrease with increasing temperature mainly because of a decrease in the photovoltaic and fill factor of the current voltage characteristic. This happens in samples which have P /T =  0.00048 WK-1 , FF / T = 0.002 %K-1, and R / T =  0.021  K-1. In order to fully exploit the material quality, a solar cell process that includes excellent rear surface passivity is needed. In this paper solar cell results from thin mc-Si solar cells with silicon nitride front and rear surface passivity are presented. Furthermore, the most important loss mechanisms with respect to thin mc-Si cells namely : (i) optical losses, (ii) losses due to rear surface recombination and (iii) losses due to the series resistance caused by local rear contact schemes with dielectric passivity are discussed. The light trapping effect of this structure is also confirmed reflection at the weakly absorbed wavelength.}, keywords = {}, url = {https://jesaun.journals.ekb.eg/article_119779.html}, eprint = {https://jesaun.journals.ekb.eg/article_119779_6eff48248985c116fdcafceeeb85b4f3.pdf} } @article { author = {M. Fayyad, Sayel and Momani, Waleed and Abu-Ein, Suleiman}, title = {MATHEMATICAL MODEL OF A PNEUMOHYDRAULIC BRAKE WITH A PRESSURE CONVERTER}, journal = {JES. Journal of Engineering Sciences}, volume = {36}, number = {No 6}, pages = {1413-1422}, year = {2008}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2008.119781}, abstract = {This study aims to building a mathematical model for pneumohydraulic brake system. Creating a pneumohydraulic brake system with a variable transfer attitudes or relation requires really a lot of complex works on modeling transient of such systems. After building the mathematical model it will be solved in order to investigate its final response and stability. It is found that the output pressure values (P1, P2, andP3) are increasing with time; displacements of pistons and may depend on pneumatic and hydraulic properties of the using medium. KEY WORDS: pneumohydraulic brake system, variable transfer attitudes, factor of hydraulic resistance, viscosity factor, brake rigidity, preliminary deformation, and pliability.}, keywords = {}, url = {https://jesaun.journals.ekb.eg/article_119781.html}, eprint = {https://jesaun.journals.ekb.eg/article_119781_ad2cb9ed9fb451fb9a144b8820d9376f.pdf} } @article { author = {Matrawy, K. K.}, title = {PERFORMANCE EVALUTION AND EXERGY ANALYSES OF AN INTEGRATED SOLAR COMBINED CYCLE POWER PLANT}, journal = {JES. Journal of Engineering Sciences}, volume = {36}, number = {No 6}, pages = {1423-1440}, year = {2008}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2008.119782}, abstract = {The present study is aimed to develop an integrated solar combined cycle power plant in which steam generator gets its energy by recovering the wasted heat of a gas turbine unit. The plant included also a concentrating collector field to heat the water coming from condenser replacing the regenerative process in Rankine cycle. In such a way, the extracted steam used for regenerative cycle can be used in other applications such as, heating process, desalination,…etc (Co-generation cycle). Producing saturated steam and superheating process are taken place in steam generator via recovering the wasted heat accompanying the exhaust gases of the gas turbine. An auxiliary heater is used at lower or less solar radiation times. A simulation mathematical model has been developed for each component of the plant and the components are matched together. This model is used to predict the temperatures, mass and heat transfer within the system under various operating and design conditions. The influence due to extracting a variable amount of steam for heating process is studied in the paper. The studied parameters included the contributions of the solar as well as the wasted energy with the products of the gas turbine. An exergy analyses for the main components of the plant are considered in the study. The final results showed that the solar energy can contribute by about 27 % from the total energy supplied to Rankine cycle whereas the energy recovery from the wasted energy of the gas turbine can contribute by about 64 %. The remaining part is covered by an auxiliary heater. The values of the efficiencies reached to about, 54 % for the solar collector, 46 % for the gas turbine, 43 % for the utilization factor of the steam turbine and 45 % for overall efficiency of the solar integrated combined cycle power plant. Also, the most exergy destruction in the plant occurred in the solar concentrator (about 33 % of the incident radiation), and the combustion chamber of the gas cycle (about 39 % of the input heat). Other components such as, compressor, gas turbine, steam turbine, and condenser, having an exergy destruction ranges from 1 % up to 5 % from the corresponding energy input to each component.}, keywords = {solar concentrating collector,Gas turbine,Steam turbine,Solar contribution,Exhaust gases contribution,Efficiency,Utilization factor}, url = {https://jesaun.journals.ekb.eg/article_119782.html}, eprint = {https://jesaun.journals.ekb.eg/article_119782_854d23a262a8747c74256352b93bdf34.pdf} } @article { author = {Abdel-Rahman, Ali K. and A. Abbara, Abdel-Aziz and R. Bayoumi, Mohamed}, title = {MEMBRANE FOULING IN CANE-SUGAR SYRUP FILTRATION}, journal = {JES. Journal of Engineering Sciences}, volume = {36}, number = {No 6}, pages = {1441-1460}, year = {2008}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2008.119783}, abstract = {Crossflow microfiltration (MF) and ultrafiltration (UF) experiments of limed mixed juice to pH of 7.5 were carried out in plate and frame module employing polysulphone membranes. The experimental study was carried out to examine the effects of membrane molecular weight (MWCO) and the transmembrane pressure (TMP) on the membrane fouling characteristics and flux decline behavior. A comparative analysis using one MF membrane (GRM0.1PP MF) and one UF membrane (GR40PP UF) was done at different TMP (viz. 1.0, 1.5 and 2.0 bar). Three theoretical models (viz. cake filtration model, internal pore blocking model, and complete pore blocking model) were used to predict the membrane resistances and permeate flux. The models were used further to help in the analysis and to isolate a suitable membrane among the studied one with respect to flux and resistance. It was noticed that in all cases the membrane fouling was the highest at the first period of operation. Study of the mechanisms responsible for flux decline in MF and UF of limed mixed juice suggested that the membrane fouling is in good correlation with the cake filtration model and the pore narrowing (internal pore blocking) model for both the GRM0.1PP MF and GR40PP UF.}, keywords = {membrane fouling,Mixed juice,microfiltration,Ultrafiltration,Transmembrane pressure}, url = {https://jesaun.journals.ekb.eg/article_119783.html}, eprint = {https://jesaun.journals.ekb.eg/article_119783_0331c491c27b75b76cf89ec6ee67ecde.pdf} } @article { author = {Nemat-Alla, Mahmoud}, title = {COMPOSITION OPTIMIZATION OF TWO DIMENSIONAL FUNCTIONALLY GRADED MATERIALS UNDER THERMAL LOADING}, journal = {JES. Journal of Engineering Sciences}, volume = {36}, number = {No 6}, pages = {1461-1482}, year = {2008}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2008.119784}, abstract = {Reduction of the thermal stresses in machine elements that are subjected to severe thermal loadings was achieved by developing two-dimensional functionally graded material, 2D-FGM. In the current investigation composition optimization for ZrO2/6061-T6/Ti-6Al-4V 2D-FGM, under severe thermal loading cycle that consists of heating followed by cooling, was carried out based on the minimization of temperatures, thermal and residual stresses to achieve more reduction of the thermal stresses. It was found that optimum composition based on minimum value of the maximum temperature for ZrO2/6061-T6/Ti-6Al-4V 2D-FGM was achieved for mx = 0.1 and my = 0.1. While optimum composition based on minimum value of the maximum normalized equivalent stresses for ZrO2/6061-T6/Ti-6Al-4V 2D-FGM was achieved for mx = 0.1 and my = 5, where mx and my are the composition variation parameters in x and y directions respectively. Also, the obtained optimum composition of ZrO2/6061-T6/Ti-6Al-4V 2D-FGM can stands well with the adopted severe thermal loading without any plastic deformation or residual stresses where the maximum value of the normalized equivalent stresses during heating stage was 0.8 and the maximum value of the normalized equivalent stresses during cooling stage was 0.24.}, keywords = {Composition optimization,2D-FGM,Nonhomogeneous parameters,Elastic-plastic material model,temperature dependent material properties,thermal stresses,Finite Element Analysis}, url = {https://jesaun.journals.ekb.eg/article_119784.html}, eprint = {https://jesaun.journals.ekb.eg/article_119784_0b3101b76f0acf8843d2c41694d35c3f.pdf} } @article { author = {Abdel-Rahman, Ali K.}, title = {NUMERICAL STUDY ON HEAT TRANSFER CHARACTERISTICS AND PERFORMANCE OF DOUBLE-PASS FLAT PLATE SOLAR AIR HEATERS}, journal = {JES. Journal of Engineering Sciences}, volume = {36}, number = {No 6}, pages = {1483-1498}, year = {2008}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2008.119785}, abstract = {In this study, the flow and heat transfer characteristics and the performance of double-pass flat-plate solar air heaters are studied numerically. The effects of the total air mass flow rate and the fraction of air mass flow rate in the upper or lower flow channel on the performance of the double-pass flat-plate solar air heaters have also been investigated numerically. The mathematical models that describe the flow and heat transfer characteristics of the double-pass flat-plate solar air heaters are derived from the momentum and energy conservation equations. The developed mathematical model has been solved using a finite volume discrete scheme utilizing the SIMPLE (Semi-Implicit Method for Pressure Linked Equations) pressure-correction scheme combined with QUICK (Quadratic Upwind Interpolation Convective Kinematics) scheme in the frame of staggered system. The results obtained from the numerical model are validated by comparison with experimental data of previous researchers. It has been found that there is a reasonable agreement between the present model results and those obtained by previous investigators.}, keywords = {Double-pass solar air heater,Thermal Efficiency,Heat transfer characteristics,Performance of flat-plate collector}, url = {https://jesaun.journals.ekb.eg/article_119785.html}, eprint = {https://jesaun.journals.ekb.eg/article_119785_178c8f81c153d7013ba3f40c83d0ca8d.pdf} } @article { author = {Shafiq Elyan, Jamal}, title = {QASER AL KHARANH A CIVILIZE MONUMENT BETWEEN CONSERVATION METHODOLOGY AND IT'S LOST}, journal = {JES. Journal of Engineering Sciences}, volume = {36}, number = {No 6}, pages = {1535-1550}, year = {2008}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2008.119786}, abstract = {The purpose of this research is to investigate and analyze the Umayyad desert castles that are located in Jordan between Amman and Azraq. It was historically considered as a connecter of the caravanserais that were going between Damascus, Baghdad and Hijaz. Qaser al Kharanah is considered as a significant architectural monument that represents an important period of the Umayyad civilization. This castle is now deteriorated because of two reasons, weather conditions and lack of established strategy of conservation. The Department of the Antiquity started doing some restoration jobs that were not based on scientific bases which causes more damage and deterioration. This research is representing a new methodology for conservation. The results indicate that this strategy is appropriate and will be helpful to present this monument and could be applied in other historical sites.}, keywords = {}, url = {https://jesaun.journals.ekb.eg/article_119786.html}, eprint = {https://jesaun.journals.ekb.eg/article_119786_f7e041cf03bd2e1fa2299d661d760f65.pdf} } @article { author = {Youssef Mohammed, Khaled and Jalal Habib, Tariq and Muhammad Ali, Abdul Muttalib}, title = {IMPACT OF BUILDING SURROUNDINGS ON DAYLIGHTING BEHAVIOR INSIDEITS BUILT SPACES. "CASE STUDY OF EDUCATIONAL BUILDING ASSIUT UNIVERSITY"}, journal = {JES. Journal of Engineering Sciences}, volume = {36}, number = {No 6}, pages = {1551-1572}, year = {2008}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2008.119788}, abstract = {Many factors are affecting the behavior of daylight in the built spaces. The context of these factors mainly fall into three levels, planning, landscape and building design. Considering planning level, latitude, site topology, building distribution and roads are the elements of the study. On the other hand, changing elements used the landscape surround the building have a strong effect on the behavior of the daylight inside building spaces. The building design level is deals with effect of characteristics of the built space, dimensions, colors, furniture, etc. It is a fact that we can’t deal with all these factors together in investigation the daylight behavior in the built spaces. In the scope of this paper, limitations are considered to focus on the factors affecting daylight behavior on the landscape level. Following and using of the deductive reasoning methodology, a case study has been carried out. Measurements have been taken inside seven chose built spaces in three different faculties in university of Assiut. In conclusion, paper findings were highlighted and particular recommendations were given.}, keywords = {}, url = {https://jesaun.journals.ekb.eg/article_119788.html}, eprint = {https://jesaun.journals.ekb.eg/article_119788_bd4da66f7de4952894d72b89a3441b33.pdf} } @article { author = {Saad Al-Shihri, Faez}, title = {URBAN DEVELOPMENT POLICIES AND ITS ROLE IN HOUSING AFFORDABILITY IN SAUDI ARABIA}, journal = {JES. Journal of Engineering Sciences}, volume = {36}, number = {No 6}, pages = {1573-1593}, year = {2008}, publisher = {Assiut University, Faculty of Engineering}, issn = {1687-0530}, eissn = {2356-8550}, doi = {10.21608/jesaun.2008.119789}, abstract = {Due to several measures taken in national development planning during the recent years, the Kingdome of Saudi Arabia (KSA) has had achievements in providing housing for its citizens. Yet, with the noticeable improvements in the public health, education, industry, commerce, and other areas, the KSA has faced a noticeable increase in its population size and overcrowded urban areas and the need for housing grew considerably. Housing affordability has become harder due several factors including the increase in land prices, the rise in construction costs, and the difficulty of finding land grants devoted for housing. This paper analyzes the role of development policies in housing affordability. The paper depends on the review of data derived from secondary sources such as previous research papers, reports and studies dealt with development and housing policies.}, keywords = {Urban Development Policies,Housing Affordability Policies,Kingdom of Saudi Arabia}, url = {https://jesaun.journals.ekb.eg/article_119789.html}, eprint = {https://jesaun.journals.ekb.eg/article_119789_1230e18bfa2f4b646c2baa4e8e751d41.pdf} }