Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 21 for “"Time-Stamp"”.
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Investigation into a GPS time pulse radiator for testing time-stamp accuracy of a radio telescope
… in South Africa is required to tag the arrival time of a signal to within 10 ns of Coordinated Universal Time (UTC). The telescope has a local atomic clock ensemble and uses satellite based remote clock comparison techniques to compare the telescope time to UTC. The master clock timing edge is …
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Anti-Counterfeit and Anti-Tamper Hardware Implementation using Hardware Obfuscation
… Code-Word during state transition. A novel time-stamp is proposed that can provide the date at which the IC was manufactured for counterfeit detection. Furthermore, we propose a second layer of tamper resistance to the time-stamp circuit to make it even more difficult to modify. Results show …
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Open-Source Testbed to Evaluate the Cybersecurity of Phasor Measurement Units
… is the Global Positioning System (GPS) for time synchronization across the board. However, this device has become more susceptible to cyber-attacks such as spoofing. This paper constructs an opensource testbed for the playback of PMU data and testing of cyberattacks on PMUs. Using a local …
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Phasor Measurement Units Applications Prioritization Based on Wide-Area Disturbance Events
… are devices that can not only measure but also time stamp voltage, current, frequency, among others. PMUs take these synchronized measurements as fast as 60 times per second; compared with the traditional 2-4 second SCADA measurements, PMUs bring a much clear and real-time picture of what is …
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Development of a cable odometer with a network interface
… by both Radar and Odometer is related by a time-stamp. The Odometer is controlled on a web page. Depending on the mode of operation chosen the user can transfer the time-stamped data to remote data storage via a network or store it on board (i.e. in Dataflash) for later downloading.
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Productivity and system improvements in an organic photovoltaic panel manufacturing facility
… SQL Server database. The panel yield and time stamp information collected from the database was used as the basis for statistical analysis of solar performance testing data. This statistical data, as well as other time study data, was then applied in the development of a comprehensive …
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Spoofing GPS receiver clock offset of phasor measurement units
… is to maximize the difference between the time offset of the PMU's receiver clock before and after the attack. Since the PMU uses this clock offset to compute a time-stamp for its measurements, an error in the receiver clock offset introduces a proportional phase error in the voltage or …
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Single Transponder Range Only Navigation Geometry (STRONG) applied to REMUS autonomous under water vehicles
… a series of spread spectrum ranges logged with time stamp, REMUS standard vehicle data, and reasonable initial conditions, the position at a later time was derived with a figure of merit fit score. Initial investigation was conducted using a noise model developed to simulate the errors suspected …
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Neural Network Fusion of Multi-Modal Sensor Data For Autonomous Surface Vessels
… sensor. Furthermore, the GPS provides precise time stamp capabilities for each sensor. This sensing platform is used for data collection to create a novel multi-modal marine dataset with LiDAR ground truth annotations. Finally, the dataset is used to demonstrate the feasibility of deep learning …
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Repeater Unit Software Development in Wireless Interactive Video Data Service System
… by the host system. The repeater unit is a real-time operating system with its in-built hardware and software functions. Application specific software can be written using the existing software drivers and libraries (kernel) to decode and process messages. The Host program monitors and responds …
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Single Transponder Range Only Navigation Geometry (STRONG) applied to REMUS autonomous under water vehicles
… a series of spread spectrum ranges logged with time stamp, REMUS standard vehicle data, and reasonable initial conditions, the position at a later time was derived with a figure of merit fit score. Initial investigation was conducted using a noise model developed to simulate the errors suspected …
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Single Transponder Range Only Navigation Geometry (STRONG) applied to REMUS autonomous under water vehicles
… a series of spread spectrum ranges logged with time stamp, REMUS standard vehicle data, and reasonable initial conditions, the position at a later time was derived with a figure of merit fit score. Initial investigation was conducted using a noise model developed to simulate the errors suspected …
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Efficient Message Logging to Support Process Replicas in a Volunteer Computing Environment
… same logical program state at different clock times, communicated data objects must be logged to ensure the replicas of a logical process receive identical communication data streams. Logging to support redundancy can be the source of a significant overhead in time and storage. In this thesis …
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Radio-Location Techniques for Localization and Monitoring Applications. A study of localisation techniques, using OFDM system under adverse channel conditions and radio frequency identification for object identification and movement tracking
… collected data from the RFID Reader in terms of Time Stamp, RSS, Tag ID, and a number of channels are processed using the MATLAB code.
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Demonstration of Vulnerabilities in Globally Distributed Additive Manufacturing
… as a string of voltage data with a matching time stamp. The voltage data is processed through a Matlab script which analyzes the direction the motor spins and the number of steps the motor takes. With these two pieces of data, the G-Code instructions which produced the motion can be …
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High Accuracy Real-time GPS Synchronized Frequency Measurement Device for Wide-area Power Grid Monitoring
… and load in the system. The Internet-based real-time GPS-synchronized wide-area Frequency Monitoring Network (FNET) was proposed to provide imperative frequency dynamics information for a variety of system-wide monitoring, analysis and control applications. The implementation of FNET has for the …
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Segmenting, Summarizing and Predicting Data Sequences
… All the information can be associated with time stamps, and thus form different types of data sequences: a sequence of feature values of users who retweet a message, a sequence of tweets from a certain user, or a sequence of the evolving friendship networks. Mining these data sequences is an …
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Adult Identification of Meaningful and Intentional Music Behaviors Demonstrated by Young Children
… the space bar, a computer program recorded time stamp data. Subjects in the Early Childhood Music Teacher (ECMT) group identified significantly more music behaviors than subjects in the Child Development Teacher (CDT) group and the Musician group. There were no significant differences in the …
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Cross-layer energy optimisation of routing protocols in wireless sensor networks
… power resources to sustain an expected lifetime of perhaps years, and the restricted computation, storage and communication capabilities of nodes that are nonetheless required to support large networks and diverse applications). No standards for routing have been developed yet for WSNs, nor …
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First measurement of the gluon polarisation in the nucleon using D mesons at COMPASS
… beam line, could only be associated by using the time stamp of the <br>corresponding measurements. The main improvement is that now also space information is taken into account, based on the knowledge of the transfer matrix of the beam line. <br>In total the fraction of non-reconstructable events …
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