Academic literature on the topic 'High-Precision Timekeeping'

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Journal articles on the topic "High-Precision Timekeeping"

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Sotiriadis, Paul P., and Gregory L. Weaver. "Diophantine Frequency Synthesizer Design for Timekeeping Systems." International Journal of Navigation and Observation 2008 (March 18, 2008): 1–7. http://dx.doi.org/10.1155/2008/416958.

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Diophantine Frequency Synthesis (DFS), a number-theoretic approach to the design of very high resolution frequency synthesizers, was introduced in 2006. Further work concerning the impact of controlling mixing products for high-spectral purity was addressed and reported at the 2007 European Frequency and Time Forum. The focus of this paper is on the implementation of nested DFS architectures targeting microphase-type applications for precision timekeeping systems. We have shown that DFS does not impart any extraordinary design constraints on spectral purity in comparison to commonly used high
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Yang, Shitao, Xiao Yi, Richang Dong, et al. "A Method for Autonomous Generation of High-Precision Time Scales for Navigation Constellations." Sensors 23, no. 3 (2023): 1703. http://dx.doi.org/10.3390/s23031703.

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The time maintenance accuracy of the navigation constellation determines the user positioning and timing performance. Especially in autonomous operation scenarios, the performance of navigation constellation maintenance time directly affects the duration of constellation autonomous navigation. Among them, the frequency stability of the atomic clock onboard the navigation satellite is a key factor. In order to further improve the stability of the navigation constellation time-frequency system, combined with the development of high-precision inter-satellite link measurement technology, the idea
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Karadzhov, Tsanko, and Borislav Georgiev. "SYSTEM FOR TESTING AND DETERMINING THE ACCURACY OF A MECHANICAL WATCH." ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference 4 (June 8, 2025): 139–44. https://doi.org/10.17770/etr2025vol4.8449.

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This paper presents a new system for measuring the accuracy of mechanical clocks with Swiss Movement. Mechanical watches are complex devices consisting of many miniature components. Even small deviations in accuracy can lead to significant differences in timekeeping. Testing the accuracy of mechanical watches is an important process that ensures their functionality, durability, and value. It helps maintain a high level of precision in timekeeping, which is critical in many aspects of daily life and professional activity. The developed system provides a readily applicable alternative to measure
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Colombo, John, and W. Allen Richman. "Infant Timekeeping: Attention and Temporal Estimation in 4-Month-Olds." Psychological Science 13, no. 5 (2002): 475–79. http://dx.doi.org/10.1111/1467-9280.00484.

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Four-month-old infants were exposed to sequences in which a 2-s light stimulus alternated with dark interstimulus periods whose length was manipulated to be 3 or 5 s. A predictable on-off pattern occurred for eight trials, but the light stimulus was omitted on the ninth trial. Infants showed heart rate responses on the omission trial that were closely synchronized with the expected recurrence of the stimulus. In addition, these heart rate patterns were observed predominantly in infants who had previously shown high levels of sustained attention in pretests with visual stimuli. These findings i
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Anand, Kumar Singh. "Energy-Efficient Time Synchronization in Wireless Sensor Networks Using TCXO-Based Clock Drift Compensation." INTERNATIONAL JOURNAL OF INNOVATIVE RESEARCH AND CREATIVE TECHNOLOGY 8, no. 4 (2022): 1–14. https://doi.org/10.5281/zenodo.15087351.

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Wireless sensor networks (WSNs) play a crucial role in applications that require precise time synchronization, such as industrial automation, fire detection, and environmental monitoring. Synchronization ensures accurate data collection, efficient communication, and optimal energy utilization in battery-powered sensor nodes. Traditional synchronization methods often rely on a combination of low-frequency clocks during sleep mode and high-frequency clocks while active, along with periodic synchronization beacons to maintain time accuracy. However, software-based clock correction techniques suff
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Puppala, Alekhya, Sourbh Rankawat, and Sandipan Ray. "Circadian Timekeeping in Anticancer Therapeutics: An Emerging Vista of Chronopharmacology Research." Current Drug Metabolism 22, no. 13 (2021): 998–1008. http://dx.doi.org/10.2174/1389200222666211119103422.

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Background: Intrinsic rhythms in host and cancer cells play an imperative role in tumorigenesis and anticancer therapy. Circadian medicine in cancer is principally reliant on the control of growth and development of cancer cells or tissues by targeting the molecular clock and implementing time-of-day-based anticancer treatments for therapeutic improvements. In recent years, based on extensive high-throughput studies, we witnessed the arrival of several drugs and drug-like compounds that can modulate circadian timekeeping for therapeutic gain in cancer management. Objective: This perspective ar
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Liu, Yuhan, Lijun Du, Yuling He, et al. "Numerical analysis and optimization of radio-frequency ion trap potential." Journal of Physics: Conference Series 2313, no. 1 (2022): 012024. http://dx.doi.org/10.1088/1742-6596/2313/1/012024.

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Abstract The trap of multi-ion frequency standard is an ideal candidate for a new generation of ground and space-borne timekeeping systems, which has high signal-to-noise ratio, low frequency drift rate and excellent long-term frequency stability. The non-ideal characteristic of radio-frequency potential is one of the dominant factors that restrict the performance of ion frequency standard. In this study, the finite element numerical analysis method is used to quantitatively analyse and optimize the electrical potential field of ion trap, and an analytical model of ideal trapping potential is
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Taufik, Muhammad, and Sutrio Sutrio. "Advanced Numerical Simulation of Pendulum Dynamics: A Comprehensive Analysis of Environmental Influences and Non-Linear Behavior." Jurnal Ilmiah Profesi Pendidikan 9, no. 4 (2024): 3068–73. https://doi.org/10.29303/jipp.v9i4.2965.

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This study explores the intricate dynamics of pendulum motion by numerically simulating the influence of environmental factors, including temperature, pressure, and humidity. Employing a high-precision Euler method with a time step of 0.0001 seconds, a 1-meter-long pendulum was modeled under varying conditions: temperatures ranging from 0°C to 40°C, pressures between 950 hPa and 1050 hPa, and humidity levels from 20% to 80%. The simulation incorporated key factors such as thermal expansion, air resistance, and non-linear oscillatory behavior for initial displacements up to 30°. Results reveal
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Turyshev, Slava G., James G. Williams, Dale H. Boggs, and Ryan S. Park. "Relativistic Time Transformations between the Solar System Barycenter, Earth, and Moon." Astrophysical Journal 985, no. 1 (2025): 140. https://doi.org/10.3847/1538-4357/adcc18.

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Abstract Relativistic corrections are essential for time transformations between geocentric, solar system barycentric, and lunicentric reference systems to account for differences in gravitational potential and relative motion. As the primary reference for Earth-based systems, Terrestrial Time (TT) provides the foundation for precise synchronization across spatial and temporal frameworks. To ensure consistency with TT, Barycentric Dynamical Time (TDB) must exhibit no average rate difference from TT. Although the International Astronomical Union has established resolutions for transformations b
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Chen, Mengshi, Haibo Yuan, Jiahui Ma, et al. "Performance Evaluation of Near Real-time GNSS PPP Time Transfer with IGS Products." International Journal of Electrical and Computer Engineering Research 2, no. 3 (2022): 1–7. http://dx.doi.org/10.53375/ijecer.2022.265.

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The GNSS time transfer technology is the high precision time transfer method based on the navigation satellite system and has been widely applied in time and frequency. Benefiting from the development of GNSS time transfer technology and the expansion of user needs for real-time time service applications, real-time time transfer technology has become an important research direction. GNSS Precise Point Positioning (PPP) is one of the most commonly used methods of GNSS time transfer technology. With the development of the many facilities, the application of the real-time GNSS PPP has become wide
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Book chapters on the topic "High-Precision Timekeeping"

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Saff, Donald. "Rescuing Martin Burgess’s Clock B." In Harrison Decoded. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198816812.003.0004.

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Intrigued by a forlorn and dilapidated yet compellingly unusual clock in a repair shop above an antique furniture dealer’s nineteenth-century mid-town New York building, Saff’s journey began. This clock was originally commissioned by rock music impresario, Simon Napier-Bell, who requested that it be suitably mesmerising that it might preoccupy clients with whom he was negotiating. A small presentation plate on the clock led the author to Burgess’s work on Harrison’s approach to horology, which defied the commonly accepted view that precision timekeeping is only achievable by high-Q pendulum sy
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Conference papers on the topic "High-Precision Timekeeping"

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Liang Chen, Jian Zhang, Xiaohu Yu, Gang Ou, Huihuang Chen, and Xianjun Zeng. "A novel method for low-power, high-precision timekeeping based on MCXO." In 2009 Joint Meeting of the European Frequency and Time Forum (EFTF) and the IEEE International Frequency Control Symposium (FCS). IEEE, 2009. http://dx.doi.org/10.1109/freq.2009.5168338.

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