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The efforts and findings of the last decades of research on the formalization and the verification of Web services have given a certain level of assurance on Web services. However new challenges such as high availability and security issues are not fully addressed. In fact, Web services are exposed to attacks that appear continuously. These issues have naturally paved the way to a new research topic...
Orchestrating a service or resources across multiple administrative domains requires three main high level steps of operation: i) capability detection of other domains ii) placement of the service request across the domains iii) assurance that the service is functioning within the acceptable bounds of the service level agreement (SLA). This paper focuses on the assurance step; in particular, we present...
Cloud federation is an emergent cloud-computing paradigm where partner organisations share data and services hosted on their own cloud platforms. In this context, it is crucial to enforce access control policies that satisfy data protection and privacy requirements of partner organisations. However, due to the distributed nature of cloud federations, the access control system alone does not guarantee...
Currently, researchers use simulators to experimenttheir innovation on emerging non-volatile memory. Unfortunately, simulation method is both time-consuming andare hard to debug. In this paper, we present a non-volatile memory emulatorwhich enables system-level research on emerging memory. Ouremulator uses performance monitoring units on off-the-shelfprocessors to implement an accurete performance...
Big data clusters introduce an intermediate cache layer between the computing frameworks and the underlying distributed file systems, to enable upper-level applications or end users to efficiently access big datasets in cache and effectively share them among different computing frameworks. As caches are shared by multiple applications or end users, directly applying existing on-demand caching strategies...
The need for massive content delivery is a consolidated trend in mobile communications, and will even increase for next years. Moreover, while 4G maturity and evolution is driven by video contents, next generation (5G) networks will be dominated by heterogeneous data and additional massive diffusion of Internet of Things (IoT). The current network architecture is not sufficient to cope with such traffic,...
Many BitTorrent (BT) clients are using these BT networks as a video-on-demand service, taking advantage of the popularity and the large collection of media available. However, transforming the swarms into an on-demand media service can cause serious damage to the overall network performance. In this paper, we propose a methodology, using the concepts of Entropy, and present a Spy BitTorrent client...
Software Defined Network (SDN) is an advanced approach to designing dynamic, manageable, cost-effective, and adaptable network architectures. SDN will play a key role as an enabler for 5G and future networks. Transferring network monitoring functions to a software entity working in conjunction with configurable hardware accelerators through a scheme called Software Defined Monitoring (SDM) is one...
This paper investigates a real-time water quality monitoring system by using a proposed brokerless publisher-subscriber (pub/sub) architecture framework. On the system, sensors sense the water measurement metrics, including temperature, pH, and dissolved oxygen level. All collected data are stored in a database and computed stochastically for further analysis on water quality. A complementary experiment...
Low-Power Wide Area Networks (LP-WANs) are emerging as a promising solution for connecting Internet of Things and Machine Type Communication devices. If ultra-narrowband (UNB) networks, a subclass of LP-WANs, reach predicted deployment numbers and densities, they will face two challenges: inter-technology and intra-technology interference. This paper proposes the first experimental architecture designed...
Emergency medical services are largely to provide facility to people in need of medical treatment or to take patient to the point of definitive care. In developing countries such as Pakistan, emergency medical services, especially pre-hospital emergency case services, are neglected for quite a long time. In metropolitan cities, timely access to emergency care becomes challenging with the increasing...
In this paper we present a system architecture for trust management inspired by a human model for the evaluation of trust. We focus on large-scale marketplaces for diverse software resources and services. In such marketplaces, user agents (consumer, provider and broker) are largely autonomous with vastly diverse requirements, capabilities, and trust preferences. We hypothesize the need for personalized...
We present a showcase of our SDN-inspired facility for the Internet of Things (IoT) — the CORAL (Cross-Layer Control of Data Flows) infrastructure. CORAL provides a hierarchy of network controllers that monitor network behaviour and adapts network protocol parameters on demand. It is built on top of rich network control abstractions and is hardware-independent. Our facility offloads protocol functionality...
Infrastructure-as-a-Service environments are becoming increasingly popular. When there is a failure, many applications require service restoration within a few seconds. Reaction to failures in Cloud is still slow for many applications. Monitoring is limited to instance metrics that are not conducive to precise diagnosis due to complexity of virtualization in physical hosts. Interferences among different...
The organization of monitoring of an aromosecurity of space with the help the aromosensory of systems and networks of terminals of smells. Approach which allows to create effective systems for safety of vital space, protection from technogenic, productions, social interactions, etc. factors is offered.
Aiming to keep under control a particular system or environment or to ensure that it works as expected there is a need to know what-when-why happens there. Various conditions and environmental factors can lead to errors, unexpected behavior or loss of control. To pursue these factors manually is time consuming, error prone, slow and usually quite expensive. Monitoring is quite complex and challenging...
This experience paper describes the process of leveraging the NFV orchestration platform built in the EU FP7 project UNIFY to deploy a dynamic network service exemplified by an elastic router. Elasticity is realized by scaling dataplane resources as a function of traffic load. To achieve this, the service includes a custom scaling logic and monitoring capabilities. An automated monitoring framework...
The Domain Name Service (DNS) is a vital service in the Internet. Much more than a simple translation mechanism, it also allows higher profile functionalities such as load balancing and enhanced content distribution. In the scope of cloud computing, DNS is foreseen as an elastic and robust service, supporting failover mechanisms, decentralised configuration and multi-tenant isolation.
Without breaking the original industrial automation system architecture, it is an important research topic to apply cloud computing to the current automation system in order to realize the function of industrial big data processing, optimizing control and intelligent decision making on the cloud platform. An industrial cloud experimental platform architecture based on OpenStack is proposed in this...
In conventional large-scale networks, creation and management of network services are costly and complex tasks that often consume a lot of resources, including time and manpower. Network softwarization and network function virtualization have been introduced to tackle these problems, aiming at decreasing costs and complexity of implementing new services, maintaining the implemented services, and managing...
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