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Sensor networks have been widely used in environment monitoring. Although there are some related works about water pollution monitoring and water pollution source localization using sensor networks, there are many problems which have not been solved so far. In this paper, the current research status on water pollution monitoring and water pollution source localization in sensor networks is illustrated...
This article selects load balancing system technology to analyze, combines the live migration technology of virtual machine, and studys the frame of virtual machine live migration as well as the mathematical model applied to concrete process of the migration. The article presents that the process of combining the specific strategies of load balance to the frame of live migration, that the simulation...
Cloud platforms and services usually provide an APIlayer as decoupled, language agnostic interface for both front-endclient integration and back-end data and/or function access. Theavailability and performance of the APIs have significant impact onthe quality of end user or client experiences due to its nature ofinteraction endpoints. However, the extreme dynamics, complexityand scale of the current...
Software Defined Networking is a novel network architecture, which separates data and control plane by OpenFlow. The feature of centralized control to acquire and allocate of global network resource. So, the link load-balancing of SDN is not as difficult as the traditional network. This paper proposes a link load-balancing algorithm based on Ant Colony Optimization(LLBACO). The algorithm uses the...
When a customer uses a service, he might change his initial requirement due to subjective reasons that could not be predicated by service providers. If this happened, service providers need to adjust the current service solution to adapt the new requirement with the objective of minimizing the change amplitude and cost. Placing this problem into AI-planning based service composition (PSC) scenario,...
Python is widely used for web programming and GUI development. Due to the dynamic features of Python, Python programs may contain various unlimited errors. Dynamic slicing extracts those statements from a program which affect the variables in a slicing criterion with a particular input. Dynamic slicing of Python programs is essential for program debugging and fault location. In this paper, we propose...
The scale of modern networks grows exponentially, challenging our ability of efficiently managing large-scale network systems. Building an efficient monitoring system for such a large-scale network to report problems is difficult because of the scale of the network. Conventional approaches based on a fixed period polling strategy cannot fast adapt to the change of network and fail to discover abnormal...
Wireless communication network has such features as limited bandwidth, changeful channel and dynamic topology, etc. Ad hoc network has lots of difficulties in accessing control, bandwidth distribution, resource assign and congestion control. Therefore, a wireless resource distributing algorithm based on communication transmission performance factors is proposed in the paper. The algorithm makes quantitative...
In recent decades, reliability in the presence of transient faults is already a significant problem for concern. To mitigate the effects of such faults, fault-tolerant techniques are proposed. However, validating the effectiveness of such fault-tolerant techniques constitutes another problem. In this paper, we put forward an original approach to evaluate the effectiveness of signature monitoring mechanisms...
Sensor networks can monitor interesting targets and fields. Most existing studies assume a constant utility (i.e. measurement accuracy) model within the sensing region. Yet the utility decreases in some scenarios as the distance becomes large. This paper considers the provisioned sensor placement problem where individual targets require different levels of utilities. The problem formulation is proved...
Advancement in wireless health sensor systems has triggered rapidly expanding research in continuous activity monitoring for chronic disease management or promotion and assessment of physical rehabilitation. Wireless motion sensing is increasingly important in treatments where remote collection of sensor measurements can provide an in-field objective evaluation of physical activity patterns. The well-known...
To solve high real-time and complexity calculation problems such as feature extraction and pattern classification when wireless sensor network real-time diagnosis and equipment health record of the mine coal underground equipments monitoring, this paper purpose a optimal algorithm for task scheduling underground wireless monitoring network based on distributed computing, this method use the fast convergence...
Given a data set P and a query set Q, a group nearest group (GNG) query returns a k-subset M of P such that M minimizes the total distance cost from each query point in Q to its closest point in M. In this paper we extend the GNG query to its dynamic version, which is called continuous group nearest group (CGNG) query. A hill climbing schemed algorithm, ADM, is proposed to efficiently solve CGNG problem...
Software as a Service (SaaS) is thriving as a new mode of service delivery and operation with the development of network technology and the maturity of application software. SaaS application providers offer services for multiple tenants through the ??single-instance multi-tenancy?? model, which can effectively reduce service costs due to scale effect. Meanwhile, the providers allocate resources according...
Considered with the accurate and fast link fault localization algorithm in optical networks, an effective multi-fault localization algorithm is proposed to solve the issue of localizing multi-fault in cycle cover monitoring algorithm. First of all, the monitoring site was chosen for each cycle from the heuristic spanning-tree (HST) cycle covering algorithm; then, suspected fault domains were obtained...
The development direction of intrusion detection system is intelligent and distributed in future. However, current distributed intrusion detection system mostly uses distributed component to collect data then sent to processing center. Data is analyzed in the processing center. These models have the following problems: bad real time capability, bottleneck, and single point of failure. In order to...
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