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In a context of users increasingly demanding for the use of technology, organizations are continually challenged to present new strategies to improve their business activities. This forces them to be aligned on frameworks and models that help to adequately relate Information and Communication Technology (ICT) resources to the external and internal activities of the organization. The application of...
Data stored in the database mostly represent current valid state. Nowadays, complex information systems require data evolution management, state monitoring over the time. Temporal definition has been proposed, which is, however, still based on conventional paradigm. Therefore, non-current values are difficult to obtain, manage and evaluate. In this paper, several temporal evolution streams are proposed...
Some approaches and techniques that allow conducting of complex physiological research using closed-architecture measurement systems of different manufacturers are discussed. The experience in developing a system with flexible configuration and in solving arising problems by virtue of integration of equipment using an external synchronizing device, is described. Parallels are drawn with the modern...
Internet-of-things (IoT) paradigm exploits the Distributed Measurement System (DMS) to execute measurements. Each node of the DMS has computational and communicative capabilities, and can be equipped by sensors and measurement instruments. Therefore, it can be assumed as Smart Object (SO). The availability of mobile SO (MSO) (cars, smartphones, drones) is taken into consideration in the research to...
Detection of focused ultrasound (FUS)-stimulated microbubble activity (i.e. acoustic cavitation) is a key methodology for monitoring and guidance of FUS therapies that harness the bioeffects of acoustic cavitation. The intensity and location of secondary acoustic emissions emitted by microbubbles can be passively detected and imaged using diagnostic imaging arrays. In turn, ultrasound-guided FUS (USgFUS)...
The uprising interest in multi-agent based networked system, and the numerous number of applications in the distributed control of the smart grid leads us to address the problem of time synchronization in the smart grid. Utility companies look for new packet based time synchronization solutions with Global Positioning System (GPS) level accuracies beyond traditional packet methods such as Network...
With the continuous progress of rural construction, the problem of rural drinking water pollution is increasingly prominent. In view of water pollution, a design of rural drinking water monitoring system based on wireless sensor networks is proposed that nodes take STM32 as the core chip and WLK01L39 as well as its peripheral circuits are used as wireless communication modules and Beidou S1216 is...
Technology nowadays is growing very rapidly, so many systems have been digitized. Most of the digitization of this system leads to the development of web-based systems, it's also combined with embedded systems, to create a system called Web of Things. Besides, digitalization will be very useful if applied to the public service system, one of which is the queuing system. In this research, we are making...
The use of animals, specially ovines, for controlling infesting species in crops is an ancient method that has several advantages with respect to the use of chemical and/or mechanical techniques. Shepherds required to supervise animals, are getting increasingly less available and are costly. Over the last years, technologies for automatic animal supervision have been investigated, typically including...
In order to ensure timing sequence and synchronization performance between different pulses not affected by temperature drift, a method of detecting temperature and compensating temperature drift based on FPGA was proposed, which can ensure data synchronization between different pulses at different temperatures. Because FPGA temperature influenced temperature drift, this method was used to detect...
this paper describes the plan design and technical features of 220kV Wangtie Smart substation, which includes many technical innovations, such as integrated measurement, control & protection devices, new busbar differential protection synchronization, adaptive sampling delay compensation of optical longitudinal differential protection, sampled value transmission mode based on online switching...
A real-time data acquisition system for precision agricultural is presented. Using the system, the spatiotemporal data for the specific local area can be collected at small expense. A hardware frame is designed to take synchronized multi-view images of the target plants as well as environmental data. To monitor the growth of plants or crops, set of images are taken periodically and a multi-view stereo...
As wireless sensor networks become more ubiquitous in the world, the need for lightweight, resilient time synchronization protocols is apparent. Wireless nodes' internal clocks are subject to drift over time due to manufacturing imperfections and environmental changes. While various protocols have been introduced that attempt to correct for this drift, they each have their own peculiarities and issues...
With the rapid development of the UHV power grid, the data interaction between the dispatching agencies has increased significantly, and the inter-agency integration features have become increasingly obvious. However, at present, the service bus in the dispatching control system is mainly for a single scheduling mechanism, only to achieve wide area sharing of specific application services and not...
There are main parameters of synchronization signals stability and methods for their monitoring in packet networks in the article. The principles of monitoring synchronization signals in the LTE network are presented.
This paper presents voltage sags detection methods based on PMU (Phasor Measurement Unit) measurements. Voltage magnitude, phase angle jump, frequency deviation and RO-COF (Rate of Change of Frequency) are continuously monitored during the sag phenomena in order to analyse the capability of PMUs for the sag disturbance detection. Real time simulations using RTDS (Real Time Digital Simulator) are used...
In order to take a consistent snapshot of a distributed system, it is necessary to collate and align local logs from each node to construct a pairwise concurrent cut. By leveraging NTP synchronized clocks, and augmenting them with logical clock causality information, Retroscope provides a lightweight solution for taking unplanned retrospective snapshots of past distributed system states. Instead of...
We propose a new sensor MAC protocol, called Bird- MAC, which is highly energy efficient in the applications where sensors periodically report monitoring status with a very low rate, as in structural health monitoring and static environmental monitoring. Two key design ideas of Bird-MAC are: (a) no need of early-wake-up of transmitters and (b) taking the right balance between synchronization and coordination...
Cloud storage usages are becoming increasingly popular on mobile devices. Through an extensive motivation study, we find that cloud storage accesses from mobile apps suffer from several notable problems that undermine usage experiences. The root cause is that the way of cloud storage providers deploying their services onto mobile devices relies on app developers for the correct and appropriate implementations...
Crowdsourced signal monitoring systems are gaining attention for capturing the wireless spectrum at large geographical scale. Yet, most of the current systems are still limited to simple power spectrum measurements reported by each sensor. Our objective is to enhance such systems with signal decoding capabilities performed in the backend while retaining the original vision of a low-cost and crowdsourced...
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