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Driven by the proliferation of data traffic and requirement of user experience improvement, mobile wireless network is evolving towards heterogeneous networks (HetNet). The telecom operator is experiencing unprecedented challenges on service maintenance and operational expenditure, which drives the demand for realizing automation in current heterogeneous networks. Cell outage detection is a functionality...
Permissions-based security model of Android increasingly shows its vulnerability in protecting users' privacy information. According to the permissions-based security model, an application should have the appropriate permissions before gaining various resources (including data and hardware) in the phone. This model can only restrict an application to access system resources without appropriate permissions,...
Rapid and accurate fault detection and diagnosis (FDD) is gaining importance for complex equipments because of the need to increase reliability and to decrease possible loss. In this paper, an intelligent fault diagnosis method is presented by using case-based reasoning (CBR) methodology to infer and classify various failures. Firstly, the case representation and the case base are established according...
Mobile sensors are a viable choice for providing monitoring service on a set of Points of Interest (PoIs) in a large sensing field. In some applications, each PoI should be covered periodically (sweep coverage), and the collected data should be delivered to the sink node timely (timely transmission), namely both the sensing and transmission delay constraints for each PoI should be satisfied, which...
Exposure problem, which corresponds to the quality of coverage, is a fundamental problem in wireless sensor networks. In this paper, we exploit a cellular computing model in the physarum for solving the minimal exposure problem. We first use the road-network among all points of interesting (PoIs) in the monitoring filed to formulate the minimal exposure problem, and then convert it into the Steiner...
After analyzing the feature of industrialized breeding and the wireless sensor network, the paper proposes a solution to automatic water monitoring system of industrialized breeding based on Zigbee protocol. The system design based on MG2455 MCU, a product of Radio Pulse Co., is emphasized in the paper, and the real-time monitoring and management of remote water quality data is implemented in the...
Multimedia sensor networks (MSNs), which allow capturing acoustic and visual information, provide an unprecedented opportunity for variety of applications. This paper investigates the heterogeneous coverage problem in MSNs, i.e., how many multimedia sensors should be deployed to guarantee that each point in the monitored region is covered by multiple types of heterogeneous sensors. It is different...
Currently real-time control and online quality estimation of the resistance spot welding (RSW) has benefited a lot from monitoring the electrode displacement of nugget thermal expansion. Based on these emerging monitoring techniques a new approach is proposed to determine the optimal control parameters and help to assess the weld quality. A causal model is built with the offline trained Bayesian Belief...
Using an algorithm to analyze opportunistically collected mobile phone location data, the authors estimate weekday and weekend travel patterns of a large metropolitan area with high accuracy.
With the development of ethernet technology, the requirement of time synchronization is becoming higher and higher on the distributed ethernet monitoring system. According to the requirement of bridge structure monitoring system, the distributed solution based on IEEE1588 protocol is presented after the research of IEEE1588 protocol and the explanation of principle on high precision synchronization...
Modern software model checkers are usually used to find safety violations. However, checking liveness properties can offer a more natural and effective way to detect errors, particularly in complex concurrent and distributed e-business systems. Specifying global liveness properties which should always eventually be true proves to be more desirable, but it is hard for existing software model checkers...
To catch up with today's fast changing business markets, web services has never slowed down its paces for evolution. As a consequence, service consumers have to employ in-time upgrades to guarantee continuous business integrity and avoid unnecessary runtime errors in their IT systems. However, a new web service release can involve hundreds of changes, and thus it is non-trivial for the service consumer...
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