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Prioritization of non-functional requirements (NFRs) is a research field that needs more attention. We demonstrate ARRoW, a novel approach for automatic runtime reappraisal and update of the weights of NFRs given new evidence collected from the environment during the execution of the system. In this paper, we showcase how ARRoW is used in an substantial industrial case study. Our results shows how...
The paper presents the design and implementation of an integrated wireless network that support to the multiparametric geophysical monitoring network of the Campi Flegrei volcanic area. The wireless network is equipped with a tool for real-time monitoring and fault detection. The enhancement of the transmission system with respect to the previously existing one has been realized in view of the increased...
With the moving of distribution systems towards a renewed architecture, new monitoring and control functionalities have emerged; with them a large amount of information need to be treated. Not all this information is strictly necessary; a relevant part of it can be simplified by the concept of Load Area: a group of prosumers whose power injection has a similar impact on the distribution grid operating...
In this work, we consider the usage of wireless sensor networks (WSN) to monitor an area of interest, in order to diagnose on real time its state. Each sensor node forwards information about relevant features towards the sink where the data is processed. Nevertheless, energy conservation is a key issue in the design of such networks and once a sensor exhausts its resources, it will be dropped from...
This paper considers the problem of network monitoring and management in distributed wireless industrial control systems. The urgency of the implementation of management and monitoring systems in such networks is stated. The possibility of using network management architectures known from general purpose networks is shown. Usage of a mixed approach to realize monitoring and management system in wireless...
To study Internet's routing behavior on the granularity of Autonomous Systems (ASes), one needs to understand inter-domain routing policy. Routing policy changes over time, and may cause route oscillation, network congestion, and other problems. However, there are few works on routing policy changes and their impact on BGP's routing behaviors. In this paper, we model inter-domain routing policy as...
Wireless Sensor Networks (WSNs) are anticipated to become the preferred tools of choice for monitoring and controlling power utility assets in the smart grid due to their versatility. However, in some smart grid monitoring applications, data generation rates could fluctuate rapidly due to the sudden occurrence of critical faults or failures in the monitored equipment. As a consequence, critical data...
Cloud data centers are difficult to manage because providers have no knowledge of what applications are being run by customers or how they interact. As a consequence, current clouds provide minimal automated management functionality, passing the problem on to users who have access to even fewer tools since they lack insight into the underlying infrastructure. Ideally, the cloud platform, not the customer,...
This paper discusses the trust-management toolkit, which is a robust and configurable protection system augmentation, which can successfully function in the presence of an untrusted (malfunctioning) smart grid (i.e., communication-based, protection system nodes). The trust-management toolkit combines reputation-based trust with network-flow algorithms to identify and mitigate faulty smart-grid protection...
The Quality of Service (QoS) in smart grid communications especially in monitoring smart grid assets is becoming significantly important for emerging smart grid applications. Wireless Sensor Networks (WSNs) are expected to be widely utilized in a broad range of smart grid applications due to their numerous advantages along with their successful adoption in various critical areas including military...
In critical infrastructure monitoring applications, the packet arrival rates of a Wireless Sensor Network (WSN) may abruptly increase when cascaded failures are observed in the monitored environment. WSNs with cluster-tree topologies could experience excessive delays because of this increase in packet arrival rates. Therefore, there should be an optimum operating point in the network where the network...
In Wireless Sensor Network (WSN) based smart grid condition monitoring applications (e.g., the detection of a Partial Discharge (PD) event in high voltage transformers), network traffic dramatically increases when cascaded faults occur. Reliability and delay are among the main issues that are affected by this increase in the traffic rates. In this paper, we present an adaptive Quality of Service (QoS)...
Wireless Sensor Network (WSN) has a great potential to be deployed in wide range of applications like consumer, industrial and defense sectors. WSNs are susceptible to various attacks, in which misdirection a kind of Denial of Service (DoS) attack is very difficult to detect and defend. In misdirection attack, the intruder misdirects the incoming packets to a node other than the intended node. Due...
Future network should focus more on what users want to get from the network rather than where users want to get through the network. Distributed content network equipped with storage and streaming server could provide effective and efficient content service to the users. We propose the hierarchical content management method to find the optimal content server in consideration of load balancing over...
Home networks are becoming more and more popular. Today's state of the art is that several different technologies like WLAN, Powerline-Communications (PLC), Ethernet etc. are being used concurrently to connect the home devices. If any connection fault happens the communication stops and new connectivity has to be established manually or, after the system has detected the fault-situation, automatically...
Wireless sensor networks consist of a large number of sensor nodes that have low power and limited transmission range and can be used in various scenario. The nodes can be deployed in the long and narrow region, such as road, bridge, tunnel and pipeline, to get some interesting information. The linear topology of these network application is different other application and have special feature, such...
Recent critical application sectors of sensor networks like military, health care, and industry require the use of mobile sensor nodes, something that poses unique challenges in aspects like handoff delay, packet loss, and reliability. In this paper we propose a novel mobility model that handles those challenges effectively by providing on-time mobility detection and handoff triggering. In that way...
In this paper the conception, feature and Technical Composition of smart grid is expounded, and the development process and present research status of smart grid home and abroad as well as the practical significance of developing smart grid in China are introduced. The paper analyzes the characteristics and direction of China's smart grid development, and point out that the development of smart grid...
With emerging demand for online surveillance and management, persistent and reliable connectivity to base stations (BSs) is indispensable so that network operators, which have access to all BSs, can collect measurements from all wireless terminals in the field, monitor their status and respond to critical incidents in real-time. However, disconnected networks make reliable BS connectivity problematic...
Failure detection is a fundamental building block for ensuring fault tolerance in large scale distributed systems. In this paper we present an innovative solution to this problem. The approach is based on adaptive, decentralized failure detectors, capable of working asynchronous and independent on the application flow. The proposed failure detectors are based on clustering, the use of a gossip-based...
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