Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
In this paper, we present an approach for automated profiling of cloud-based distributed applications. The failure dependencies within or between application nodes can be methodically elucidated by dynamically applying a series of unitary perturbations on the underlying computing resources. Each such perturbation in a node acts as a stimulus which propagates to performance meters of dependent nodes...
Software Networks built by combining Software Defined Networks (SDN), Network Function Virtualization (NFV) and Cloud principles call for agile and dynamic automation of management operations to ensure continuous provisioning and deployment of networked resources and services. In this context, efficient Service Level Agreements (SLA) management and anticipation of Service Level Objectives (SLO) breaches...
We present Electrosense: a distributed, collaborative and low-cost wireless spectrum monitoring solution which is deployed on a large scale. The proposed framework provides tools to enable and promote a crowdsourced open spectrum monitoring platform for wide area deployments. The collected spectrum data is stored and processed in the backend which can be easily retrieved by the users through an open...
This paper presents a novel cognitive management architecture developed within the H2020 CogNet project to manage 5G networks. We also present the instantiation of this architecture for two Operator use cases, namely ‘SLA enforcement’ and ‘Mobile Quality Predictor’. The SLA enforcement use case tackles the SLA management with machine learning techniques, precisely, LSTM (Long Short Term Memory). The...
In today's multicore architectures, complex interactions between applications in the memory system can have a significant and highly variable impact on application execution time. System designers typically use hardware counters to profile execution behaviours and diagnose performance problems. However, hardware counters are not always sufficient and some problems are best identified with full memory...
Network traffic monitoring is an important factor to maintain stability and effective network management in software-defined networking (SDN). However, monitoring by current support of SDN architecture, i.e., OpenFlow, is neither flexible nor scalable due to the dependence to OpenFlow tables, which is designed mainly for forwarding. The scalability issue is even more serious when monitoring in network-wide...
We propose an architecture that incorporates a robust and agile primary user (PU) detection, accompanied by a dynamic OFDM spectrum allocation scheme. By exploiting the capabilities of a 2×2 MIMO PCIe SDR device we are able to maximize the usage of the available spectrum with the minimal PU disturbance.
In order to communicate with another service, a service needs to know the address of other services. This knowledge can be acquired by a process called service discovery (SD). In a microservice architecture (MSA), unlike SOA, a service discovery framework has not been provided out of the box. In a telecom environment additional requirements may arise, besides the basic one of discoverability. In this...
Self-awareness has been used in many research fields in order to add autonomy to computing systems. In automotive systems, we face several system layers that must be enriched with self-awareness to build truly autonomous vehicles. This includes functional aspects like autonomous driving itself, its integration on the hardware/software platform, and among others dependability, real-time, and security...
Network security is an ever growing field. As, the information technology have conquered almost all domains, the search for loop holes in the security increased tremendously. This led to the deployment of various hardware and software based security tools. One of the tools used for implementing security is intrusion detection systems (IDS). We address a problem that current intrusion detection systems...
Consistent cost effective health monitoring has become the need of the hour especially for the unstable, chronically and critically ill. Here we present a novel architecture and algorithmic methodology combining the sensing subsystem and the analytics engines. Physiological parameters from multiple sensors feed into a severity quantizer and a subsequent multiplexer, the output of which is processed...
An operational analysis of agent based voltage and outage monitoring system for power distribution network would be presented in this paper. Sri Lankan distribution network has been upgraded recently with some of the new technological features such as automatic meter reading, remote breaker operations etc. But most important activities in the distribution system such as fault identifications, voltage...
In this paper, we address a novel method to efficiently manage and analyze a large amount of log data. First, we present a new Apache Hive-based data storage and analysis architecture to process a large volume of Hadoop log data, which rapidly occur in multiple nodes. Second, we design and implement three simple but efficient anomaly detection methods. These methods use moving average and 3-sigma...
The research challenge of current Wireless Sensor Networks (WSNs) is to design energy-efficient, low-cost, high-accuracy, self-healing, and scalable systems for applications such as environmental monitoring. Traditional WSNs consist of low density, power-hungry digital motes that are expensive and cannot remain functional for long periods on a single charge. In order to address these challenges, a...
Elasticity is a key component of modern cloud environments and monitoring is an essential part of this process. Monitoring demonstrates several challenges including gathering metrics from a variety of layers (infrastructure, platform, application), the need for fast processing of this data to enable efficient elasticity and the proper management of this data in order to facilitate analysis of current...
Hardware Trojans are a major concern due to the damage caused by their stealth. One popular utilization of Multiprocessor System on Chips (MPSoCs) is the Pipelined MPSoC (PMPSoC) architectures. They are used in applications from video surveillance to consumer electronics. We present a method that detects the presence of Trojans in third party IP cores of PMPSoCs, by continuous monitoring and testing,...
In this work, we explore a security reference monitor (RM) design which borrows from the Flask security architecture. Our RM design goal is to achieve complete mediation by checking and verifying the authority and the authenticity of every access to every system object in systems-on-chip (SoCs). Access decisions are administered by a security logic “server" implemented as an extension of the...
Long latency of memory operation is a prominent performance bottleneck in graphics processing units (GPUs). The small data cache that must be shared across dozens of warps (a collection of threads) creates significant cache contention and premature data eviction. Prior works have recognized this problem and proposed warp throttling which reduces the number of active warps contending for cache space...
In these last few years we are witnessing a tremendous change in the way video games are developed. On the one hand, large development teams with a multi-layered organisation are employed. On the other hand, we see an increasing request for online services and functionalities. Combining these two trends together usually results in large projects involving parallel and distributed systems. Despite...
Tremendous interest prevails in developing a convenient and effective wearable medical device for evaluating sleep at home. The current study presents the clinical validation of VitalPatch®, a wireless adhesive patch sensor for screening of sleep architecture compared to the gold standard polysomnograph (PSG). A group of 45 volunteers were attached to a standard 22-channel PSG and a VitalPatch sensor...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.