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Our aim was to test the feasibility of measuring beat-to-beat heart rate from vibrations of the body due to the cardiac activity by smartphone accelerometers. The signal recorded by the accelerometers has a similar morphology respect to the ballistocardiographic signal (BCG). This preliminary study was conducted on one healthy volunteer, with the ECG signal simultaneously acquired as reference. Systolic...
Managing coordination between Autonomic Managers in the Multi-Cloud environment requires an effective control mechanism to handle issues such as conflict during decision-making and in the execution phase. MAPE-K control loop provides a primary control loop in managing adaptation activity where the complex environment especially in Multi-Cloud with decentralized Autonomic Managers, is not sufficient...
Atomicity races in ARINC 653 applications are a kind of concurrency bugs which causes nondeterministic behaviors by parallel processes. This paper presents a tool, called AR653, to dynamically detect atomicity races. The tool monitors only synchronization operations and access to shared resources, and analyzes the relation of synchronizations to report atomicity races through a locking discipline...
This article discussed the time synchronization performance monitoring system in the scope of 1588v2 telecom profile and presented three monitoring system modes: Master-slave monitoring (node-by-node monitoring), Passive-node monitoring on loop topology network (segmental monitoring), and multicast + unicast monitoring (full-path monitoring). The article detailed three monitoring modes' implementation,...
This paper describes research into improving IEEE 1588 synchronization accuracy when using 1000BASE-T, Gigabit Ethernet over copper wiring. It describes the possible sources of error in such a system, such as path asymmetries and non-deterministic delays, and proposed solutions for them. The methods described improve synchronization accuracy by enhancing the accuracy of timestamps of both ingress...
The receiver system is an important part of FAST (Five-hundred-meter Aperture Spherical Radio Telescope) and plays a key role in determining the performance of the telescope. The receiver design requires synchronization among the digital instruments and accurate timestamp, because time synchronization of astronomical data before and after it is recorded and processed is of vital importance for the...
CAN (Controller Area Network) and TIA-485 are two of the most used standards in fieldbus systems. While CAN ISO IS-11898 includes complete data link layer specifications on top of its physical layer, TIA-485 only addresses the physical layer of the 7-layer OSI model. Other communication parameters like speed, format, and data transmission protocol are not specified by RS-485 in order to provide interoperability...
Non-contact methods for the tracking of breathing have found noticeable interest in research in recent years motivated by the obtrusiveness of the traditional approach to sleep disordered breathing diagnosis. The low-priced Kinect device released by Microsoft has emerged as a possible alternative hardware in the field of subject's monitoring aimed at sleep disorders analysis. In this paper we present...
Power and energy consumption are important concerns in the design of high performance and mobile computing systems, but have not been widely considered in the design of parallel and distributed simulations. The importance of these factors is discussed and metrics for power and energy overhead in parallel and distributed simulations are proposed. Factors affecting the energy consumed by synchronization...
This paper proposes a dissimilar four-redundancy Electrical Load Management Center (ELMC) to meet the reliability requirement of More/All Electric Aircraft (MEA/AEA), which is able to effectively eliminate the common mode fault of the redundant system. The CPUs of the dissimilar four-redundancy ELMC are composed of two DSP and two FPGA, which can be considered as the hardware dissimilar redundancy...
Monitoring pregnancy using noninvasive recordings of uterine contractions is still an unsolved issue. Here, we propose a new way to tackle this problem using the electrohysterographic (EHG) signals recorded during pregnancy and labor. The new approach is based on the analysis of the propagation of the uterine electrical activity. The proposed pipeline includes i) the computation of the statistical...
Runtime monitoring can be used to verify, enforce and control the dynamic execution of a target program at runtime to detect property violations, enforce desired properties and actively correct the execution, respectively. However, the state-of-the-art study lacks an appropriate formal program semantics of runtime monitoring. In this paper, we propose a theory of runtime control at an appropriate...
This paper firstly reviews the recent development in power system protection, with special attention paid to the wide-area and integrated protection, in order to look into future development of protection and control system for smart grids. The paper then mainly reports on the design of a novel architecture for the integration of protection and control for wide area power network. The concept of integrated...
Many contexts dealing with sensitive information require high-robustness and high-assurance certified security systems that should not be affected by known vulnerabilities. Covert channels are illicit paths that could be exploited by attackers to convey illicit data flows that contravene the security policies. Many implementations of the so-called Covert Storage Channels exist, whereas no implementation...
The Underwater Acoustic Sensor Networks (UWASN) has sensors which are deployed underwater for gathering information for the unexplored parts of oceans or rivers. UWASN consists of variable number of floating and anchored sensors, sink and vehicles that are deployed over an area to be explored. Thus the deployment efforts of UWASN have curbed with preposterous budgetary price and eminent power depletion...
Smart Home System is an inevitable trend of modern home due to its increasing affordability with development of IOT (Internet of Things). A complete Smart Home System empowers users to centralize the control of home devices, meanwhile, enables system administrators to manage them conveniently. For example, administrators can update/upgrade system data to support new equipment, push news and advertisements...
Being prepared for natural and complex emergencies is a top priority for the UN World Food Programme (WFP). In order to efficiently provide adequate support, WFP has a strong local presence, with more than 80 Country Offices (CO) around the world. The WFP Emergency Preparedness team, in strict cooperation with leading academic institutions and technology experts, develops innovative early warning...
We study whether local structural changes in a complex network can be distinguished from passive remote time-course measurements of the network's dynamics. Specifically the detection of link failures in a network synchronization process from noisy measurements at a single network component is considered. By phrasing the detection task as a Maximum A Posteriori Probability hypothesis testing problem,...
This paper proposes a method to estimate temporally accurate human pulse peaks for noncontact pulse transit time (PTT) measurements. The PTT is considered as a significant diagnostic index for conditions such as blood pressure and arterial stiffness; however, millisecond-order accuracy is required in the determination of each pulse peak. In this study, human pulse waveforms are obtained from wrist...
Energy consumption evaluation is one of the most important steps in Cyber-Physical Energy System (CPES) development. However, due to the lack of accurate and effective modeling and evaluation approaches considering the uncertainty of environment, it is hard to conduct the quantitative analysis for the energy consumption of CPESs. To address the above issue, this paper proposes an environment-aware...
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