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Keywords = Engineering

  • Open Access Review Article
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    Trends Journal of Sciences Research 2015, 2(1), 1-6. http://doi.org/10.31586/MechanicalEngineering.0201.01
    128 Views 698 Downloads 7 Citations PDF Full-text (929.326 KB)  HTML Full-text
    Abstract
    The use of finite element models as research tools in biomechanics and orthopedics grew exponentially over the last two decades. However, the attention to mesh quality, model validation and appropriate energy balance methods and the reporting of these metrics has not kept pace with the general use of finite element
    [...] Read more.
    The use of finite element models as research tools in biomechanics and orthopedics grew exponentially over the last two decades. However, the attention to mesh quality, model validation and appropriate energy balance methods and the reporting of these metrics has not kept pace with the general use of finite element modeling. Therefore, the purpose of this review was to develop the nonlinear filter and thermal buckling of an FGM panel under the combined effect of elevated temperature conditions and aerodynamic loading is investigated using a finite element model based on the thin plate theory and von Karman strain-displacement relations to account for moderately large deflection. It is found that the temperature increase has an adverse effect on the FGM panel flutter characteristics through decreasing the critical dynamic pressure. Decreasing the volume fraction enhances flutter characteristics, but this is limited by the structural integrity aspect. Structural finite element analysis has been employed to determine the FGM panel's adaptive response while under the influence of a uniaxial compressive load in excess of its critical buckling value. By increasing the applications of using composite materials inside aviation stages, it is visualized that the versatile FGM plate setup will broaden the operational execution over traditional materials and structures, especially when the structure is presented to a raised temperature. The vicinity of air motion facilitating stream brings about delaying the locking temperature and in stifling under loads, while the temperature build gives route for higher thermal-cycle abundance.  Full article
    Figures

    Figure 5 of 7

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  • Open Access Research Article
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    Trends Journal of Sciences Research 2015, 2(1), 17-20. http://doi.org/10.31586/ComputerScience.0201.03
    11 Views 343 Downloads PDF Full-text (397.853 KB)  HTML Full-text
    Abstract
    Trust Management is one of the most challenging issues in the emerging Web Engineering and Internet Technologies. Over the past few years, many studies have been proposed different techniques to address trust management issues. However, despite these past efforts, several trust management issues such as privacy, security, accessibility, integrity and
    [...] Read more.
    Trust Management is one of the most challenging issues in the emerging Web Engineering and Internet Technologies. Over the past few years, many studies have been proposed different techniques to address trust management issues. However, despite these past efforts, several trust management issues such as privacy, security, accessibility, integrity and scalability have been mostly ignored and need to be proposed in Web Engineering technologies. Web services provide many opportunities for enterprises to built trustworthiness. In India the growing economic infrastructure with lightening speeds towards the adoption and successful implementation of e-governance. Establishing trust in e-governance services is quite important as now government has many services for common man at their door step and more services are in future. But the common man has to know about it and have used frequently for their daily requirements. This paper is emphasized to trust on the web services and what steps should be adopted for better service.  Full article
    Figures

    Figure 2 of 3

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  • Open Access Research Article
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    Trends Journal of Sciences Research 2015, 2(3), 95-103. http://doi.org/10.31586/ChemicalEngineering.0203.03
    36 Views 38 Downloads PDF Full-text (1.543 MB)  HTML Full-text
    Abstract
    The sanctuaries of Demeter and Asklepios are part of the Dion archaeological site that sits among the eastern foothills of Mount Olympus. The main building materials are limestones and conglomerates. Sandstones, marbles, and ceramic plinths were also used. The materials consist mainly of calcite and/or dolomite, whereas the deteriorated surfaces
    [...] Read more.
    The sanctuaries of Demeter and Asklepios are part of the Dion archaeological site that sits among the eastern foothills of Mount Olympus. The main building materials are limestones and conglomerates. Sandstones, marbles, and ceramic plinths were also used. The materials consist mainly of calcite and/or dolomite, whereas the deteriorated surfaces contain also secondary and recrystallized calcite and dolomite, gypsum, various inorganic compounds, fluoroapatite, microorganisms and other organic compounds. Cracks and holes were observed in various parts of the stones. The influence of specific weathering agents and factors to the behavior of the materials was examined. The particular environmental conditions in Dion combine increased moisture and rain fall, insolation and great temperature differences, abundance of intensive surface and underground water bodies in the surrounding area, an area full of plants and trees, therefore, they can cause extensive chemical, biological and mechanical decay of the monuments. The following physical characteristics of the building materials have been studied: bulk density, open porosity, pore size distribution, water absorption and desorption, capillary absorption and desorption. The chemical composition of bulk precipitation, surface and underground water was investigated. The salts presence and crystallization was examined. The influence of the water presence to the behavior of the materials was examined by in situ IR thermometer measurements. Temperature values increased from the lower to the upper parts of the building stones and they significantly depend on the orientation of the walls. The results indicate the existence of water in the bulk of the materials due to capillary penetration. The existence of water in the bulk of the materials due to capillary penetration, the cycles of wet-dry conditions, correlated with the intensive surface and underground water presence in the whole surrounding area, lead to partial dissolution-recrystallization of the carbonate material and loss of the structural cohesion and the surface stability.  Full article
    Figures

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  • Open Access Research Article
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    Trends Journal of Sciences Research 2015, 2(4), 121-125. http://doi.org/10.31586/TransportationEngineering.0204.02
    50 Views 52 Downloads 4 Citations PDF Full-text (655.601 KB)  HTML Full-text
    Abstract
    Signalized intersections are essential elements of road transport in cities, thus providing condition in which these key elements have optimal performance in different traffic conditions has always been a concern for traffic engineers. Normally, Average vehicle control delay (delay due to the presence of traffic lights) is used as performance
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    Signalized intersections are essential elements of road transport in cities, thus providing condition in which these key elements have optimal performance in different traffic conditions has always been a concern for traffic engineers. Normally, Average vehicle control delay (delay due to the presence of traffic lights) is used as performance indicators on signalized intersections that is estimated using a lot of equations, including the Webster, Green Shields and the equation described in the book "Highway Capacity Manual". But in these equations no place is include for the distribution of vehicles on the routes leading to the signalized intersections. Ignoring this issue could lead to a false estimate of the average amount of delay on the signalized intersections because of the type of their entrance resulting in inefficient operation of the intersection. Using Expectation Method, this paper proposes a better estimate of the amount of delay on the vehicles in signalized intersections, depending on frequency of entrance to the intersection. In the end it will be found out that different frequency distribution of vehicles at nearside legs of intersection lead to different delay estimates of vehicles.  Full article
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  • Open Access Research Article
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    Trends Journal of Sciences Research 2018, 3(3), 120-123. http://doi.org/10.31586/Nanomaterials.0303.03
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    Abstract
    Nanoceramics are composed of ceramics and are classified as inorganic, heat-resistant, nonmetallic solids made of both metallic and nonmetallic compounds. Bone tissue engineering applies bioactive scaffolds, host cells and osteogenic signals for restoring damaged or diseased tissues. Composites of bioactive ceramics closely match the properties of bone. In the present
    [...] Read more.
    Nanoceramics are composed of ceramics and are classified as inorganic, heat-resistant, nonmetallic solids made of both metallic and nonmetallic compounds. Bone tissue engineering applies bioactive scaffolds, host cells and osteogenic signals for restoring damaged or diseased tissues. Composites of bioactive ceramics closely match the properties of bone. In the present review paper, an attempt has been made to emphasize the suitability of nanoceramics in the field of bone tissue engineering. Toxicity of these synthesized nanomaterials should be checked before their real application. Nanoceramics, in future, will surely prove to be important nanomaterials in the field of tissue engineering.  Full article
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