Academic literature on the topic 'Fixed-point observing systems'

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Journal articles on the topic "Fixed-point observing systems"

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Sagen, Hanne, Matthew Dzieciuch, Espen Storheim, et al. "Acoustic networks in high Arctic Ocean observing systems." Journal of the Acoustical Society of America 152, no. 4 (2022): A73. http://dx.doi.org/10.1121/10.0015589.

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Sustained in situ ice-ocean observations are sorely lacking in the Arctic, limiting research on climate, weather, ice-ocean processes, and geophysical hazards. A sustained network of advanced multipurpose underwater moorings and drifting buoys in the Nansen and Amundsen Basins that included acoustic and other instrumentation would make a substantial contribution to a high Arctic Ocean observing system. Such a network would provide point measurements of ocean parameters, large-scale temperature measurements using acoustic thermometry, acoustic geo-positioning of underwater floats and gliders, a
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Alqaralleh, Zayd, and Fatma Alazmi. "The Controversy Between the Spoken and Written in Arabic - A Study of Phonetic Values and the Multiplicity of References -." Arts and Social Sciences Series 2, no. 3 (2023): 247–72. http://dx.doi.org/10.59759/art.v2i3.297.

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The controversy between what lies amidst the spoken and written, and the gap of nonconformity constitutes a problematic dilemma in the Arabic language, a serious dilemma. This study seeks to identify this problem, trying to point out its features, causes and explanations by considering of the reasons derived from phonetic values, or from the origins that influenced the emergence of Arabic calligraphy becoming one of the fixed residues that define the Arabic systems of writing. The study reviews examples of this controversy being described s a problematic, so the study utilizes the instrument o
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Madeira, Lucas, and Vanderlei S. Bagnato. "Non-Thermal Fixed Points in Bose Gas Experiments." Symmetry 14, no. 4 (2022): 678. http://dx.doi.org/10.3390/sym14040678.

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One of the most challenging tasks in physics has been understanding the route an out-of-equilibrium system takes to its thermalized state. This problem can be particularly overwhelming when one considers a many-body quantum system. However, several recent theoretical and experimental studies have indicated that some far-from-equilibrium systems display universal dynamics when close to a so-called non-thermal fixed point (NTFP), following a rescaling of both space and time. This opens up the possibility of a general framework for studying and categorizing out-of-equilibrium phenomena into well-
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Lahoche, Vincent, Dine Ousmane Samary, and Mohamed Tamaazousti. "Generalized scale behavior and renormalization group for data analysis." Journal of Statistical Mechanics: Theory and Experiment 2022, no. 3 (2022): 033101. http://dx.doi.org/10.1088/1742-5468/ac52a6.

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Abstract Some recent results showed that the renormalization group (RG) can be considered as a promising framework to address open issues in data analysis. In this work, we focus on one of these aspects, closely related to principal component analysis (PCA) for the case of large dimensional data sets with covariance having a nearly continuous spectrum. In this case, the distinction between ‘noise-like’ and ‘non-noise’ modes becomes arbitrary and an open challenge for standard methods. Observing that both RG and PCA search for simplification for systems involving many degrees of freedom, we aim
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Wu, Tao, Feng An, Xiangyun Gao, et al. "Universal window size-dependent transition of correlations in complex systems." Chaos: An Interdisciplinary Journal of Nonlinear Science 33, no. 2 (2023): 023111. http://dx.doi.org/10.1063/5.0134944.

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Correlation analysis serves as an easy-to-implement estimation approach for the quantification of the interaction or connectivity between different units. Often, pairwise correlations estimated by sliding windows are time-varying (on different window segments) and window size-dependent (on different window sizes). Still, how to choose an appropriate window size remains unclear. This paper offers a framework for studying this fundamental question by observing a critical transition from a chaotic-like state to a nonchaotic state. Specifically, given two time series and a fixed window size, we cr
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Toller, Simone, Francesco Riminucci, Emanuele Bohm, et al. "Decadal analysis of chlorophyll fluorescence, algal blooms and driving factors from a fixed-point observing system in the Northern Adriatic Sea." ARPHA Conference Abstracts 8 (May 28, 2025): e152305. https://doi.org/10.3897/aca.8.e152305.

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Understanding the dynamics of coastal marine ecosystems is fundamental for assessing environmental health and addressing anthropogenic impacts. This study analyzes a decade-long dataset of high-resolution Chlorophyll fluorescence (ChlF) measurements collected hourly from August 2012 to December 2022 at the E1 meteo-oceanographic buoy (Böhm et al. 2016). The buoy is located in the Northern Adriatic Sea (44° 08.58' N; 12° 34.20' E), approximately 100 km south of the Po River delta and 7 km northeast of Rimini, Italy. As part of the "Delta del Po and Costa Romagnola" (Bergami and Riminucci 2025)
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Pham, Thien, Loi Truong, Hung Bui, et al. "Towards Channel-Wise Bidirectional Representation Learning with Fixed-Point Positional Encoding for SoH Estimation of Lithium-Ion Battery." Electronics 12, no. 1 (2022): 98. http://dx.doi.org/10.3390/electronics12010098.

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5G is the fifth generation of cellular networks and has been used in a lot of different areas. 5G often requires sudden rises in power consumption. To stabilize the power supply, a 5G system requires a lithium-ion battery (LIB) or a mechanism called AC main modernization to provide energy support during the power peak periods. The LIB approach is the best option in terms of simplicity and maintainability. Moreover, a 5G system requires not only high-performance energy but also the ability of tracking and prediction. Therefore, the requirement for a smart power supply for lithium-ion batteries
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González-Haro, Cristina, Aurélien Ponte, and Emmanuelle Autret. "Quantifying Tidal Fluctuations in Remote Sensing Infrared SST Observations." Remote Sensing 11, no. 19 (2019): 2313. http://dx.doi.org/10.3390/rs11192313.

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The expected amplitude of fixed-point sea surface temperature (SST) fluctuations induced by barotropic and baroclinic tidal flows is estimated from tidal current atlases and SST observations. The fluctuations considered are the result of the advection of pre-existing SST fronts by tidal currents. They are thus confined to front locations and exhibit fine-scale spatial structures. The amplitude of these tidally induced SST fluctuations is proportional to the scalar product of SST frontal gradients and tidal currents. Regional and global estimations of these expected amplitudes are presented. We
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Escobar, Ivana, Patrick Heimbach, and Feras Habbal. "Toward assimilation of acoustic travel times into an ocean state estimate." Journal of the Acoustical Society of America 154, no. 4_supplement (2023): A219. http://dx.doi.org/10.1121/10.0023335.

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Direct ocean observing systems are a scarce set of data that build the backbone for understanding the current state of the ocean. These systems are limited in areas of high variability in temperature and salinity. Pioneering work of Wunsch (1977) proposed efforts to extract detailed hydrographic information using sound propagation through the ocean, providing the scaffolding to improve our understanding of the ocean's interior. The integrated nature of such measurements makes acoustic thermometry a powerful application for monitoring regional to basin-averaged hydrographic changes in the ocean
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Huang, Haocai, Shijie Xu, Xinyi Xie, Yong Guo, Luwen Meng, and Guangming Li. "Continuous Sensing of Water Temperature in a Reservoir with Grid Inversion Method Based on Acoustic Tomography System." Remote Sensing 13, no. 13 (2021): 2633. http://dx.doi.org/10.3390/rs13132633.

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The continuous sensing of water parameters is of great importance to the study of dynamic processes in the ocean, coastal areas, and inland waters. Conventional fixed-point and ship-based observing systems cannot provide sufficient sampling of rapidly varying processes, especially for small-scale phenomena. Acoustic tomography can achieve the sensing of water parameter variations over time by continuously using sound wave propagation information. A multi-station acoustic tomography experiment was carried out in a reservoir with three sound stations for water temperature observation. Specifical
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Book chapters on the topic "Fixed-point observing systems"

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Sakai, Hideki. "Consideration of Restoration in Yaw Resonance." In Lecture Notes in Mechanical Engineering. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-70392-8_111.

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AbstractYaw resonances cause the rear-end of the vehicle to swing, which is related to the feeling of handling. As a basis for improving this motion, this paper considers the restoration of yaw resonance. The equilibrium position of the yaw resonance is the extension of the velocity vector at the “heading point,” where the vehicle median line is perpendicular to the turning radius in a steady state turn. Toward this position, the center of percussion at the rear-end of the vehicle travels. This travel is the restoration of yaw. Observing the vehicle behavior from the earth-fixed coordinate sys
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