Current Issue : July - September Volume : 2015 Issue Number : 3 Articles : 8 Articles
Information management includes multimedia data management, knowledge management, collaboration, and agents, all of\nwhich are supporting technologies for XML. XML technologies have an impact on multimedia databases as well as collaborative\ntechnologies and knowledge management. That is, e-commerce documents are encoded in XML and are gaining much popularity\nfor business-to-business or business-to-consumer transactions. Recently, the internet sites, such as e-commerce sites and shopping\nmall sites, deal with a lot of image and multimedia information. This paper proposes an intelligent web digital image information\nretrieval platform, which adopts XML technology for social curation commerce environment. To support object-based content\nretrieval on product catalog images containing multiple objects, we describe multilevel metadata structures representing the local\nfeatures, global features, and semantics of image data. To enable semantic-based and content-based retrieval on such image data,\nwe design an XML-Schema for the proposed metadata.We also describe how to automatically transform the retrieval results into\nthe forms suitable for the various user environments, such as web browser or mobile device, using XSLT.The proposed scheme can\nbe utilized to enable efficient e-catalog metadata sharing between systems, and it will contribute to the improvement of the retrieval\ncorrectness and the user�s satisfaction on semantic-based web digital image information retrieval....
In order to study the cooling effect of the crushed-rocks embankment, the permeability and the inertial resistance coefficient\nwere measured by the wind tunnel test of spheres with a diameter of 20 cm, and then the stabilities of the closed crushed-rocks\nembankment with the wide pavement, the closed crushed-rocks embankment with the narrow pavement, and the duct-ventilated\nand closed crushed-rocks embankment were calculated. In the next 50 years, assuming that the temperature in Qinghai-Tibet\nplateau will rise by 2.6?C condition, the cooling effects of these three special high-grade embankment structures were studied.\nThe test results and the numerical calculation results show that the relationship between pressure gradient and seepage velocity\nin the spheres layer diverges completely from Darcy�s law, and it shows a nice quadratic nonlinear relationship. Stabilities of those\ntwo closed crushed-rock embankments without the duct-ventilated structure could be destroyed because of the high permafrost\ntemperature under embankments. The duct-ventilated and closed crushed-rocks embankment can cool down the permafrost\neffectively and raise the permafrost table and ensure the long-term thermal stability of permafrost under road....
The effect of wind distribution on the architectural domain of the Bahrain Trade Centre was numerically analysed using\ncomputational fluid dynamics (CFD). Using the numerical data, the power generation potential of the building-integrated wind\nturbines was determined in response to the prevailing wind direction. The three-dimensional Reynolds-averaged Navier-Stokes\n(RANS) equations along with the momentum and continuity equations were solved for obtaining the velocity and pressure field.\nSimulating a reference wind speed of 6m/s, the findings from the study quantified an estimate power generation of 6.4kW\nindicating a capacity factor of 2.9% for the benchmark model. At the windward side of the building, it was observed that the layers\nof turbulence intensified in inverse proportion to the height of the building with an average value of 0.45 J/kg. The air velocity was\nfound to gradually increase in direct proportion to the elevation with the turbine located at higher altitude receiving maximum\nexposure to incoming wind. This work highlighted the potential of using advanced computational fluid dynamics in order to factor\nwind into the design of any architectural environment....
In the development of new technologies based on mobile system, there is a growing interest as a fundamental technology. In\nparticular, in order to realize a mobile office andmobile phones, conferencing remote document is a technique that can realize smart\nnetwork services solutions with enhanced real-time communication, real-time information sharing, and collaboration. Therefore,\nin this paper, the design meets the diverse needs of customers and the smart work platform mobile-based fast and conveniently it\nis trying to develop. For this reason, I have developed a mobile gateway that is based on the communication server construction\nOPEN API development, management of mobile ID, protocol design, and design of SSL/TLS security tunnel. Also, we developed a\nsmart work platform that you apply this, you are trying to provide information systems environment of mobile company....
Solid particle erosion is a mechanical process that removes material by the impact of solid particles entrained in the flow. Erosion\nis a leading cause of failure of oil and gas pipelines and fittings in fluid handling industries. Different approaches have been used to\ncontrol or minimize damage caused by erosion in particulated gas-solid or liquid-solid flows. S-bend geometry is widely used in\ndifferent fluid handling equipment that may be susceptible to erosion damage. The results of a computational fluid dynamic (CFD)\nsimulation of diluted gas-solid and liquid-solid flows in an S-bend are presented in this paper. In addition to particle impact velocity,\nthe bend radius may have significant influence on the magnitude and the location of erosion. CFD analysis was performed at three\ndifferent air velocities (15.24 m/sââ?¬â??45.72 m/s) and three different water velocities (0.1 m/sââ?¬â??10 m/s) with entrained solid particles. The\nparticle sizes used in the analysis range between 50 and 300 microns. Maximum erosion was observed in water with 10 m/s, 250-\nmicron particle size, and a ratio of 3.5. The location of maximum erosion was observed in water with 10 m/s, 300-micron particle\nsize, and a ratio of 3.5. Comparison of CFD results with available literature data showed reasonable and good agreement....
This study aimed to explore the online users� behaviors. Since the Internet was introduced to the market, the various and frequent\nonline activities have increased, and it becomes more important for the businesses to understand the online users. Therefore this\nstudy analyzed the online users� behaviors and segmented the users by using ????-means clustering method using actual clickstream\ndata.There were four different research questions and, thus, four different sets of segmentations. It was found that many people find\nmuch of entertaining fromonline using SNS, games, and so on. In addition, some people only have access to a few specific websites.\nSome use the online service regularly every day while others use it in a very irregular pattern. People were divided into two groups,\nweekday group and weekend group. People are likely to be using the Internet either on weekdays or at weekend. Teenagers and\npeople in their 50s are more likely to use it during weekend. In addition, teenagers also show different time zone (e.g., overnight)\nto use the Internet from other age groups. These results can shed light on understanding what consumers do online and what they\nare interested in currently and on decision making in marketing strategy...
We propose a new algorithm to build self-organizing and self-repairing marine structures on the ocean floor, where humans and\nremotely operated robots cannot operate. The proposed algorithm is based on the one-dimensional cellular automata model and\nuses simple transition rules to produce various complex patterns. This cellular automata model can produce various complex\npatterns like sea shells with simple transition rules. The model can simulate the marine structure construction process with\ndistributed cooperation control instead of central control. Like living organism is constructed with module called cell, we assume\nthat the self-organized structure consists of unified modules (structural units). The units pile up at the bottom of the sea and\na structure with the appropriate shape eventually emerges. Using the attribute of emerging patterns in the one-dimensional\ncellular automata model, we construct specific structures based on the local interaction of transition rules without using complex\nalgorithms. Furthermore, themodel requires smaller communication data among the units because it only relies on communication\nbetween adjacent structural units. With the proposed algorithm, in the future, it will be possible to use self-assembling structural\nmodules without complex built-in computers....
Compression test was carried out and the true stress-strain curves were obtained from the hot compression of 7085 alloy. A\nnumerical simulation on the deformation behavior of 7085 aluminum alloy during the backward extrusion was also performed\nby finite elementmethod. The results show that dynamic recrystallization occurs in the hot compression of 7085 alloy and the peak\nstress reaches higher values as the strain rate increases and deformation temperature decreases. The backward extrusion processes\ninclude contact deformation, initial deformation, and steady deformation. Severe plastic deformation of shear and compression\noccurs when the metal flowed into the channel between fillet of punch and wall of die so that the grain size can be refined by\nbackward extrusion. The deformation in the region of top of wall is too small to meet the mechanical properties of requirements\nand the metal usually needs to be trimmed.The experiments with the same parameters as simulation had been carried out and the\nexperimental cup after extrusion has better quality....
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