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The energy consumption of cloud servers has dramatically increased. In order to meet the growing demands of users and reduce the skyrocketing cost of electricity, it is critical to have performance guaranteed and cost-effective job schedulers for clouds. In recent years, there has been a growing body of research which focus on improving resource utilization to improve energy efficiency, system throughput...
In typical settings for Wireless Sensor Networks (WSNs), a potentially large set of nodes operates under strict requirements concerning energy consumption and packet delivery success. If non-reliable or even malicious nodes participate, standard protocols can suffer in performance which may result in a limited functionality of the whole network. This paper addresses this issue by establishing end-to-end...
The reproducibility of an in-silico experiment is a great challenge because of the parallel and distributed environment and the complexity of the scientific workflows. In order to solve such problems on one hand provenance data has to be captured about the dataflow, the ancestry of the results and the environment of the execution, on the other hand description data has to be collected from the scientist...
The Unscented Kalman Filter (UKF) is widely used to solve nonlinear systems, like submarine tracking, aircraft surveillance, autonomous robotics and mobile systems. One of the typical problems solved using UKF is Bearing-Only Target Motion Analysis (BOTMA) for manoeuvring and non manoeuvring targets. This paper proposes a methodology for parallel execution of UKF with an aim to enhance its performance...
Fingerprint applications are widely used to identify person's authenticity. The frequency domain analysis of fingerprint plays an important role for authentication of noisy fingerprint images. This paper proposes a CORDIC algorithm: a unique computing technique suitable for solving trigonometric functions like sine, cosine and arctanto extract features of fingerprint image using FFT for perfect matching...
The aim of the study was to determine the effectiveness of the use of RFID technology in selected processes at store with construction materials of the one of DIY retail network in Poland. During the research, author was focused on examination the effectiveness of the use of RFID tags and determination the efficiency of the process compared with traditional barcodes or manually performed actions....
Complex multiplications are the backbones of almost all Digital Signal Processing (DSP) algorithms and several other scientific applications. Complexity Reduction of these operations at architectural level or algorithmic level can certainly save the chip area, which ultimately can be a driver parameter for selection of power or speed optimized architectures. Improvement in these performance parameters...
With the continuing progress in semiconductor technology the design and certification of security microcontrollers faces new challenges. This presentation looks at the impact of technologies below 65nm from a manufacturer's perspective, analysing the changes in effectiveness and necessary effort of different attack techniques, and presenting scenarios that showcase the need for hardware security while...
In this paper, a 6-bit 320-MS/s successive approximation register analog-to-digital converter (SAR ADC) is presented. The 2-bit/cycle technique and tri-level based charge redistribution technique are utilized to achieve high conversion rate and reduce the hardware cost. The proposed ADC is designed and implemented in a 65-nm CMOS process. Simulation results show that it accomplishes 48.52-dB SFDR,...
Network is the direction of development for industrial control, application of PROFIBUS-DP network consisting of S7-300 PLC S7-200 PLC produced by Siemens is becoming more and more widely. WinCC is powerful PC monitoring configuration software, often need to read and write datum of master-slave PLC in the network. This paper discusses the method of direct communication between WinCC and master-slave...
The Stanford “Lab-In-A-Box” project comprises an open source hardware and software tool chain for teaching signal processing and analog electronics. It is intended to improve the teaching of these concepts by providing a platform that is more open and understandable and by lowering the economic barriers to students interested in the field. To do this, the Lab-In-A-Box brings a full powered Digital...
This paper describes our efforts to include a hands-on component in the teaching of core concepts of digital signal processing. The basis of our approach was the low-cost and open-source “Stanford Lab in a Box.” This system, with its easy to use Arduino-like programming interface allowed students to see how fundamental DSP concepts such as digital filters, FFT, and multi-rate processing can be implemented...
In this contribution, the use of Behavioural Synthesis for hardware generation of a contour-based image segmentation method, is presented. The segmentation method examined is a well-known, state-of-the-art, robust, efficient and fast-converging one, that considers functionals depending on the curve geometry and image properties in a level-set framework. A cost function is built and sought to be minimized,...
In previous work we showed that reflection and Wrappings are useful tools for system integration. But System of Systems integration also needs to accommodate specific hardware challenges. We discuss simple examples from the operation of a single cyber-physical agent that accepts top-down commands, but uses the Wrappings architecture to self-organize its context specific implementation of them. Our...
Energy consumption is a key challenge in HPC (HighPerformance Computing). Nowadays, as far as software is concerned, optimizations for energy saving are usually implemented at different levels, with an obvious lack of proposals so that the user could directly write energy-efficient code. This proposal aims to contribute to source code optimization so as to achieve optimal performances and maximum...
High sampling rate Analog-to-Digital Converters (ADCs) can be obtained by time-interleaving low rate (and thus low cost) ADCs into so-called Time-Interleaved ADCs (TI-ADCs). Nevertheless increasing the sampling frequency involves an increasing sensibility of the system to desynchronization between the different ADCs that leads to time-skew errors, impacting the system with non linear distortions....
The combination of emerging concepts, such as Fog Computing, Software Defined Networking and Network Function Virtualization will contribute to transform the network into a flexible and dynamical continuum of resources, on which services can be easily deployed and managed (network programmability). In this scenario, a major topic is the use of ad hoc h/w accelerators, in particular to provide the...
The software and hardware development in Ferrari F1 is characterized by a very short cycle time. Typically during the in-season development, the fixes and new developments need to be addressed in few days, in order to be ready for the following race. At the same time the hardware, like new electronic control units or new devices need to be developed from one year to the other. In this scenario the...
In this paper we present the results of the delay measurements of the Ethernet traffic handled by different Open-Flow switches realized in the NetFPGA cards. We investigated three different software approaches: reference software for Open-Flow on NetFPGA cards, xDPd/ROFL prepared for OpenFlow implementation in NetFPGA cards and xDPD/ROFL library prepared for GNU/Linux cooperating with reference NIC...
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