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System architecture diagram.
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In this paper, we design a logistics information management platform based on LBS technology. On the basis of LBS technology, the platform utilize RFID automatic identification in order to obtain relevant data, make the monitoring in the process of logistics perfect, reduce the logistics aspect and unnecessary losses in the process, drop the securi...
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The problems faced by subway stations in the construction process are more complex than those by overground buildings. Therefore, the construction risk for such structures is highly unpredictable and the risk management is difficult. Building information modeling (BIM) technology has strong visualization, simulation, and integration characteristics...
Citations
... Recently, ubiquitous sensor network technology has enabled complex associations between humans and physical objects or physical and virtual environments. Interaction with the surrounding physical environment and personalized services is increasingly in demand for applications such as mobile asset management [1][2][3], indoor navigation [4][5][6][7], and location-based reservation [8] systems. However, these services are still based on centralized client/server-based architectures that are inefficient in supporting multiple complex collaborations that require real-time responses over a large number of service subscribers. ...
... In this section, to help explain the proposed concept, we introduce a service environment named U-Hospital. This service environment best illustrates service scenarios that require complex collaboration and real-time responses among a large number of service subscribers in indoor location-aware applications (e.g., mobile asset management [1][2][3], indoor navigation [4][5][6][7], and location-based reservation [8] systems). A U-Hospital has some distinctive features as follows. ...
... After that, the tokens will be managed by the distributed service agents. This scenario is well suited to various mobile asset management environments [1][2][3]. Figure 8 shows a sequence diagram of the tracking service. First, when a mobile node sends its current location to a stationary node using LIDx (1), the service agent will check whether or not the current location is the correct location. ...
Recently, indoor location-aware applications that provide interactive capability with the surrounding physical environment are increasingly in demand. These applications include mobile asset management, indoor navigation, and location-based reservation systems. In many cases, these services require multiple and dynamic collaborations over a large number of service subscribers with a deterministic, fast response time. However, many studies still function primarily on client/server-based centralized architectures that are inefficient in supporting complex collaboration, due to their static organization and unpredictable network congestion. To address this problem, we propose a middleware architecture named Dynamic Reconfigurable Agent Space (DRAS), based on a collaboration of service agents that can be distributed over the requested service area. A service application can dynamically modify a service area according to the request of the service subscribers under the DRAS. To demonstrate the feasibility and performance of the DRAS, we evaluated the elapsed time for dynamic reconfiguration of the service area. Also, two general collaboration scenarios in indoor location-aware applications called voting and tracking were evaluated in the simulation and in a real environment. The evaluation shows that the proposed middleware is suitable for indoor location-aware applications that require a large number of mobile nodes and complex collaboration by the effective distribution of network traffic and processing around the service agents.
It has comes to be the center stage that how to take advantage of Spatial information to reduce the cost of logistic and improve the efficiency. Based on Web Processing Service Specification, multipartite logistics information and services are integrated, the WPS-based third logistics geospatial information service pattern is built, a solution to different logistics is proposed that can help them to integrate information resources of the distributed heterogeneous multiple source systems. promote a variety of distribution and storage resource sharing, make logistics resources shared and work together, reduce the cost and improve efficiency. Simulation results have proved that this schema is valuable.
