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Performance analysis of a process plays a significant role in improving the overall efficiency of any system. Usually, this task is accomplished either by system level commands or user space applications, based on proc file system. These existing user space based mechanisms are limited in application and often fail to provide the required process specific data to user. In order to avoid this limitation,...
In the field of automation, reliability is a key aspect to enable resilient systems. Especially, in areas with extreme conditions a reliable monitoring is necessary such as factory, volcano, or laboratory monitoring. These are environments where devices could be stressed uncommonly high and thus more devices could fail in a shorter time period in the worst case. Centralized monitoring systems, which...
Network-as-a-Service (NaaS) is a cloud-based service model that offers on-demand network connectivity and the provisioning and management of network services. However, the actual orchestration of dynamically allocating underlying resources to customer requirements is not trivial. In this paper, we propose an SDN-based approach to support the NaaS model. We implement a proof-of-concept (PoC) on a physical...
There is a death risk that increases with the required time to transport a critical patient to a hospital by ambulance. Effectiveness of medical attention and therefore patient’s safety will strongly depend on the quickness to determine appropriate actions to be performed when patient arrives to the hospital. It is evident the need of establishing a communication link between monitoring equipment...
Today the cloud-desktop service, or Desktop-as-a-Service (DaaS), is massively replacing Virtual Desktop Infrastructures (VDI), as confirmed by the importance of players entering the DaaS market. In this paper we study the workload of a DaaS provider, analyzing three months of real traffic and resource usage. What emerges from the study, the first on the subject at the best of our knowledge, is that...
The drive for ever-increasing power circuit efficiencies ensures that the measurement of gate charge (Qg) will continue to grow in importance. In this paper, we explain a new Qg measurement method that solves many conventional Qg measurement issues. The outlined method supplies the same Qg curve obtained by traditional one-pass high-power measurement techniques using a new method that combines two...
Sheet-resistance test-structures to determine conductance along the interface formed by 400°C pure boron (PureB) deposition on silicon are presented. The structures are straightforward to fabricate and measure for monitoring either directly after deposition or end-of-line. This provides valuable information on the perfection of the deposition and the series resistance of PureB (photo)diodes.
In this paper, we propose a novel SSD caching scheme and virtual disk image format, named SVD (Sequential Virtual Disk). Our proposed techniques are based on workload characteristics in home cloud server, in which synchronous random writes dominate. Unlike previous studies, we use SSD as a read-write cache in order to effectively mitigate performance degradation of synchronous random writes.
This paper describes an exploratory study for the evaluation of the performance quality attribute for releases of the same system. The main aim is to reveal performance degradations of architectural scenarios and their possible causes. Three software systems from different domains are used in our study, including a large-scale web system (SIGAA), a UML modeling tool (Argo UML), and a client-server...
The I/O caused by background applications shorten the lifespan of mobile devices because they affect the behavior of power intensive hardware. Our efficient power management scheme addresses this problem by killing unnecessary applications. Our results show LPK extends the lifespan up to 9.4% compared to baseline on a real device.
Multi-tier data-intensive applications are widely deployed in virtualized data centers for high scalability and reliability. As the response time is vital for user satisfaction, this requires achieving good performance at each tier of the applications in order to minimize the overall latency. However, in such virtualized environments, each tier (e.g., application, database, web) is likely to be hosted...
Recently, there are many improvements in Internet of Things (IOT). Through the recombination and optimization, the real-world devices can provide their functionality as web services in IOT. However, it is very difficult to cost-effectively access to the Internet of Things due to the environmental changes. In this paper, firstly, a Petri net-based model for service composition in IOT is proposed, which...
The rapid expansion of the Internet of Things (IoT) will generate a diverse range of data types that needs to be handled, processed and stored. This paper aims to create a multi-agent system that suits the needs introduced by the IoT expansion, thus being able to oversee the Big Data collection and processing and also to maintain the semantic links between the data sources and data consumers. In order...
In this paper a novel reputation-based trust framework in federated testbeds is presented, termed as Federated Trust and User Experience (FTUE) Framework. Our aim is to assist peer experimenters in properly selecting resources from the federated community by constructing a quantitative view of the trustworthiness of each testbed. The FTUE framework combines the perceived user experience, as provided...
A modern system-on-a-chip includes tens to hundreds of modules such as processor cores, memories and other IP blocks and exchanges packetized data using highperformance interconnection networks as a subsystem for data transport. This paper reports the implementation of an industry-wide network on a chip in FPGA, and the first implementation and evaluation of the Sonics Performance Monitor and Hardware...
The Information technology (IT) plays a key role in the functioning of the modern era. The evolution of computer is very fast. It improves the efficiency of processing, the capacity of memory and the transmission rate of network. The procurement department will procure the new resources. They did not know that equipment suit any budget because they may not track changes or the development of a computer...
In this article, we briefly describe a project whose main objective is to offer simple, unattended operation and low cost spectrum monitoring units based on open source software and hardware for Software Defined Radio (SDR), to support monitoring and management tasks and to complement traditional fixed, transportable and mobile spectrum monitoring units, with specific functionalities that are not...
In response to environmental issues about energy saving and reducing CO2 emissions, energy consumption monitoring is desirable particularly in office or school premise. In this paper, we propose a system to monitor and control electrical devices in a building. The system consists of pervasive layer, controller, and application layer. Wireless Sensor Network is utilized to actuate the appliances and...
the fluctuation of received signal strength indicator emerges poor accuracy in healthcare location monitoring service. To enhance the capability of position classification, this paper represents positioning system based on ZigBee standard using artificial neural networks algorithm. Time-delay Multi-Layer Perceptron is proposed by using Levenberg-Marquardt optimization. For the result, the average...
In this work, galvanic coupling intra-body communication (IBC) is presented as a promising approach for wireless personal health monitoring system. The architectural hardware design of a QPSK modulated data communication system for galvanic coupling IBC is proposed. The channel characteristics of the human body are first reviewed. Hardware design is performed using VHDL codes and realized in FPGA...
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