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A trend has emerged toward the development of critical systems hosted on the Ethernet databus. Ethernet enjoys unprecedented standardization in commercial networks, and a vast network of engineers with training and experience. It is now commonly known that implementations of deterministic Ethernet for avionics networks known as ARINC 664 part 7 exist on several commercial airframes. In other platforms,...
Despite being industry standard, load balancing via virtual machine (VM) migration methods in modern cloud data centers still exhibit two major performance issues: resulting system load balancing degree and total time till balanced state. Over the years research has been conducted to improve these metrics. Yet due to the fact that these issues influence each other, it has been a challenge to achieve...
This paper describes industry efforts to develop an underwater acoustic communications standard for the offshore energy community. The Subsea Wireless Group (SWiG), an international oil and gas industry network comprising operators, installers, and technology companies, assessed a variety of potential use cases and possible routes to develop a common standard, culminating in the selection of the JANUS...
The dynamic bandwidth allocation (DBA) process in the modern passive optical networks (PONs) is crucial since it greatly influences the whole network performance. Recently, the latest new generation PON (NG-PON) standard, known as 10-gigabit-capable passive optical network (XG-PON), standardized by the international telecommunication union telecommunication standardization sector (ITU-T), emerges...
The adoption of on-load tap changer (OLTC)-fitted transformers in low voltage (LV) networks is increasingly being considered to mitigate voltage issues resulting from high penetrations of photovoltaic (PV) systems. However, depending on the corresponding voltage control strategy, tap operations can be significant, accelerating the ageing of the OLTC. This work assesses the performance of different...
The Information Centric Networking (ICN) model relies on the ubiquitous use of caching to improve performance and reduce bandwidth requirements. ICN also makes it possible for routers to fetch content from downstream nodes, such as when a content for a home user is fetched from a neighbor’s home router, with significant performance improvement. This paper shows how an attacker using compromised hosts...
The typical Software Defined Networking (SDN) Data Center (DC) of the future will likely be comprised of a software overlay and a hardware underlay, i.e., a physical network. From an architectural perspective, there are two distinct possibilities for such DCs. The first is a loosely coupled model where the software overlay and the hardware underlay are kept independent and managed separately. In this...
This paper reports on a comprehensive, fully automated resource use monitoring package, TACC Stats, which enables both consultants, users and other stakeholders in an HPC system to systematically and actively identify jobs/applications that could benefit from expert support and to aid in the diagnosis of software and hardware issues. TACC Stats continuously collects and analyzes resource usage data...
The use of Modbus protocol for industrial control and monitoring applications over multipoint RS-485 networks may be constrained by several factors, as the number of messages exchanged over the network and their respective bandwidth usage. Some applications need an evaluation of the response times of a set of messages to ensure that the set is schedulable, according to the application requirements,...
DVB-T2 TV is at the implementation stage in Ukraine. Country net includes transmitters in 166 cities. The role of a radiomonitoring service is to ensure efficient use of radio-frequency spectrum particularly by measurements of the emission parameters including occupied bandwidth. It is necessary to find the spectrum level of X dB, which is lower than the predetermined 0 dB reference level and corresponds...
The paper describes some EMC aspects related to a UWB radar for monitoring astronauts breathing activity. Compliance to EMC space standards forces some design aspects, in particular the peak voltage and the pulse waveform. Moreover some simulations were carried out to consider realistic operating condition. In the first case the interference towards a victim wifi circuit was analyzed, in the second...
Smart meter network is one of the backbone for modern power grid or smart grid. It is very critical to have the right technologies for the efficient operation of smart meter network. Smart meter network requibres the right bidirectional communications medium and interoperability capability. As thousands of meters will be interconnected to the distribution power network, it is vital to combine communications...
IEEE P1900.4 is an emerging standard for optimized radio resource utilization where cognitive radio technologies are used for efficient spectrum utilization. In this paper, we design and implement a cognitive wireless network system based on open documents of IEEE P1900.4, and evaluate its performance using UDP streaming and HTTP download. Our experiments show interesting results that total network...
The objective of this paper is to introduce Newland Harmonic wavelets and Pincus (1991) approximate entropy are applied to extract weak cycle jumps. Because some weak vibration signals contained strong noises are very important for fault forecast. Based on harmonic wavelet mesh plot of the vibration signals, we can induce contours of the mesh map with log space, then, we offer the time-frequency profile...
The increased availability of mobile broadband connec- tions enables the expansion of software downloads to mobile devices. This leads to greater number of available services and a better utilisation of the computational power of mobile devices. The downside of this increased software availability is an increase in the possible attack vectors. One scenario is the misuse of resources, for example,...
The increasing ubiquity of mobile embedded systems has been matched by the evolution of a variety of wireless network standards and technologies. The major constraints of wireless embedded systems are limitations of communication bandwidth, processing capabilities, and battery power. Remote wireless embedded systems often act as sensors, which provide data to a certain community. The exchange of data...
This is an introduction to the proceedings of the MWS 2007 workshop held at EDOC 2007. It first explains the motivation for and background of the workshop. Then, it contains a short description of the keynote, each long and short peer-reviewed paper, and the discussion session "impact of various execution environments on middleware for web services". After the closing statements, MWS 2007...
Optical communication systems based on dense wavelength division multiplexing (DWDM) would benefit from the ability to adjust the operating wavelength of a laser transmitter. Previous attempts, including thermal adjustment, etalon based wavelength locking, and various types of optical frequency and phase locked loops such as the Pound-Drever-Hall technique suffer from weaknesses including sensitivity...
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