In recent years, the ALE (Application Level Event) by EPCglobal leads the standard of RFID middleware and that represents minimal interfaces and extension points in order to independently operate it in system infrastructures. However, the extension in functions using the extension point has not standardized in the present time. Also, it demonstrated certain problems that require new codes or modifications to apply the function to the system in a system, which is being operated. This paper proposes a dynamic ALE middleware framework by introducing an AOP (Aspect Oriented Programming) method to solve such problems and designs aspects to implement the proposed framework. The middleware framework and aspect designed in this study are able to provide dynamic functions and that solve the difficulty in the maintaining and management of the conventional ALE-based middleware according to their functional extensions. Also, it makes possible to add new functions as a standardized manner.
This can make an immediate action impossible in the event of failure in equipment or contents due to the lack of integrated management, and it can also cause a lot of administrative costs for the maintenance of equipment for each type. In addition, the ineffective management of contents brings about such problems as errors, duplication and inconsistency in the contents. To solve these, construction of an integrated management system as well as an efficient, low-cost operational system is required. The system proposed in this paper integrates and controls the remote terminal devices, and it implemented in a multicast way. For each of many different devices in remote locations such as set-top boxes, kiosks and speakers, functions including broadcast schedule edition, multimedia playback automation and subtitle display configuration are controlled directly at the central system. As a result of the test in conjunction with the actual devices, this proposed program could easily integrate the heterogeneous terminals.
Abstract. ANSYS FLUENT is one of CFD models and is good for analyzing detailed flow around a hydraulic structure installed in a stream. So this research used ANSYS Fluent in order to analyze the flow characteristics of revetment, where the stone mattress and vegetation mound are installed, with the flood condition and to evaluate the stability of vegetation mound. In the result of numerical simulation, the flow velocity was reduced comparing to the central flow of channel by 50% or more around the vegetation mound located at the bottom of stone mattress. It is possible to sufficiently reduce erosion by flood in a certain area with the stone mattress installed but it will be required to additionally research the change of stable section of downstream of stone mattress in accordance with the size of flow.
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