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Large organizations need rigorous security tools for analyzing potential vulnerabilities in their networks. However, managing large-scale networks with complex configurations is technically challenging. For example, organizational networks are usually dynamic with frequent configuration changes. These changes may include changes in the availability and connectivity of hosts and other devices, and services added to or removed…

—A data discovery and dissemination protocol for wireless sensor networks (WSNs) is responsible for updatingconfiguration parameters of, and distributing management commands to, the sensor nodes. All existing data discovery anddissemination protocols suffer from two drawbacks. First, they are based on the centralized approach; only the base station candistribute data items. Such an approach is not…

Abstract—We propose employing receiver cooperation in centralizedtopology control to improve energy efficiency as well asnetwork connectivity. The idea of transmitter cooperation hasbeen widely considered in topology control to improve networkconnectivity or energy efficiency. However, receiver cooperationhas not previously been considered in topology control. In particular,we show that we can improve both connectivity and energy efficiencyif…

Abstract—Social networks have been recently employed as asource of information for event detection, with particular referenceto road traffic congestion and car accidents. In this paper, wepresent a real-time monitoring system for traffic event detectionfrom Twitter stream analysis. The system fetches tweets fromTwitter according to several search criteria; processes tweets, byapplying text mining techniques; and finally…

Real-Time Detection of Traffic FromTwitter Stream AnalysisAbstract—Social networks have been recently employed as asource of information for event detection, with particular referenceto road traffic congestion and car accidents. In this paper, wepresent a real-time monitoring system for traffic event detectionfrom Twitter stream analysis. The system fetches tweets fromTwitter according to several search criteria; processes tweets,…

REAL-TIME BIG DATA ANALYTICAL ARCHITECTURE FOR REMOTE SENSING APPLICATION ABSTRACT: In today’s era, there is a great deal added to real-time remote sensing Big Data than it seems at first, and extracting the useful information in an efficient manner leads a system toward a major computational challenges, such as to analyze, aggregate, and store, where…

Cloud storage such as Dropbox and Bitcasa is one of the most popular cloud services. Currently, with the prevalence of mobile cloud computing, users can even collaboratively edit the newest version of documents and synchronize the newest files on their smart mobile devices. A remarkable feature of current cloud storage is its virtually infinite storage.…

An initiative data prefetching scheme on the storage servers in distributed file systems for cloud computing. In this prefetching technique, the client machines are not substantially involved in the process of data prefetching, but the storage servers can directly prefetch the data after analyzing the history of disk I/O access events, and then send the…

With the increasing volume of images users share through social sites, maintaining privacy has become a major problem, as demonstrated by a recent wave of publicized incidents where users inadvertently shared personal information. In light of these incidents, the need of tools to help users control access to their shared content is apparent. Toward addressing…

Asthma is one of the most prevalent and costly chronic conditions in the United States which cannot be cured. However accurate and timely surveillance data could allow for timely and targeted interventions at the community or individual level. Current national asthma disease surveillance systems can have data availability lags of up to two weeks. Rapid…

An initiative data prefetching scheme on the storage servers in distributed file systems for cloud computing. In this prefetching technique, the client machines are not substantially involved in the process of data prefetching, but the storage servers can directly prefetch the data after analyzing the history of disk I/O access events, and then send the…

It is long known attackers may use forged source IP address to conceal their real locations. To capture the spoofers, a number of IP traceback mechanisms have been proposed. However, due to the challenges of deployment, there has been not a widely adopted IP traceback solution, at least at the Internet level. As a result,…

Abstract:  Analyze the impact of network coding (NC) configuration on the performance of ad hoc networks with the consideration of two significant factors, namely, the throughput loss and the decoding loss, which are jointly treated as the overhead of NC. In particular, physical-layer NC and random linear NC are adopted in static and mobile ad…

MapReduce job, we consider to aggregate data with the same keys before sending them to remote reduce tasks. Although a similar function, called combine, has been already adopted by Hadoop, it operates immediately after a map task solely for its generated data, failing to exploit the data aggregation opportunities among multiple tasks on different machines.…

Abstract—Intelligently extracting knowledge from social mediahas recently attracted great interest from the Biomedical andHealth Informatics community to simultaneously improve healthcareoutcomes and reduce costs using consumer-generated opinion.We propose a two-step analysis framework that focuses on positiveand negative sentiment, as well as the side effects of treatment, inusers’ forum posts, and identifies user communities (modules) andinfluential users…