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Journal articles on the topic 'Offline stabilization'

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1

Sadeghi Bogar, Mohsen, Jan Wolf, Daniel Sebastian Jens Wolz, et al. "Sensitivity of Offline and Inline Indicators for Fiber Stretching in Continuous Polyacrylonitrile Stabilization." Fibers 11, no. 8 (2023): 68. http://dx.doi.org/10.3390/fib11080068.

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In carbon fiber (CF) production, the stabilization process step is the most energy- and time-consuming step in comparison with carbonization and graphitization. To develop optimization routes for energy and productivity, the stabilization needs to be monitored continuously via inline analysis methods. To prognose the evolution of high-performance CF, the density of stabilized fibers has been identified as a robust pre-indicator. As the offline analysis of density is not feasible for inline analysis, a density-soft sensor based on the stabilization indices of Fourier Transform Infrared spectrum
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Graf, Heike. "Media Practices and Forced Migration: Trust Online and Offline." Media and Communication 6, no. 2 (2018): 149–57. http://dx.doi.org/10.17645/mac.v6i2.1281.

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This article explores the relationship between online and offline practices in the special case of forced migration. By applying a central category in social relations, trust/distrust as developed by Niklas Luhmann, this article contributes to the understanding of forced migration in the digital age. It presupposes that, without a strategy of trust, it would be almost impossible to cope with situations of unfamiliarity and uncertainty. By interviewing refugees, the question is in what contexts the refugee recognizes that they can trust (or not). The article concludes that through the combinati
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Anuchin, Alecksey, Galina L. Demidova, Chen Hao, Alexandr Zharkov, Andrei Bogdanov, and Václav Šmídl. "Continuous Control Set Model Predictive Control of a Switch Reluctance Drive Using Lookup Tables." Energies 13, no. 13 (2020): 3317. http://dx.doi.org/10.3390/en13133317.

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A problem of the switched reluctance drive is its natural torque pulsations, which are partially solved with finite control set model predictive control strategies. However, the continuous control set model predictive control, required for precise torque stabilization and predictable power converter behavior, needs sufficient computation resources, thus limiting its practical implementation. The proposed model predictive control strategy utilizes offline processing of the magnetization surface of the switched reluctance motor. This helps to obtain precalculated current references for each torq
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Kummer, K. D., and W. F. Geiger. "Stabilization of Activated Sludge Processes During Wet Weather Flow through Microscreening." Water Science and Technology 29, no. 1-2 (1994): 393–99. http://dx.doi.org/10.2166/wst.1994.0687.

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In the activated sludge process, between the aeration tank and the final clarifier, offline microscreening is introduced to separate activated sludge and purified water. The intention is to reduce the drifting of activated sludge from the aeration tank into the final clarifier. Sludge drifting usually occurs during wet weather flow loading of the treatment facility and can cause higher concentrations of ammonia and suspended solids in the effluent. Laboratory and half-technical scale experiments demonstrate that microscreening is suitable for this application. It is expected that the operation
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Al-Sharman, Alham, and Catherine F. Siengsukon. "Sleep Enhances Learning of a Functional Motor Task in Young Adults." Physical Therapy 93, no. 12 (2013): 1625–35. http://dx.doi.org/10.2522/ptj.20120502.

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Background Sleep has been demonstrated to enhance simple motor skill learning “offline” in young adults. “Offline learning” refers to either the stabilization or the enhancement of a memory through the passage of time without additional practice. It remains unclear whether a functional motor task will benefit from sleep to produce offline motor skill enhancement. Physical therapists often teach clients functional motor skills; therefore, it is important to understand how sleep affects learning of these skills. Objective The purpose of this study was to determine whether sleep enhances the lear
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Zhou, Xiangyang, Hao Gao, Yuan Jia, Lingling Li, Libo Zhao, and Ruifang Yu. "Parameter Optimization on FNN/PID Compound Controller for a Three-Axis Inertially Stabilized Platform for Aerial Remote Sensing Applications." Journal of Sensors 2019 (March 26, 2019): 1–15. http://dx.doi.org/10.1155/2019/5067081.

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This paper presents a composite parameter optimization method based on the chaos particle swarm optimization and the back propagation algorithms for a fuzzy neural network/proportion integration differentiation compound controller, which is applied for an aerial inertially stabilized platform for aerial remote sensing applications. Firstly, a compound controller combining both the adaptive fuzzy neural network and traditional PID control methods is developed to deal with the contradiction between the control precision and robustness due to disturbances. Then, on the basis of both the chaos par
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Sofyan Fadly, Eby, and Jian Budiarto. "Aplikasi Evaluasi Perkembangan Latihan Atlet Panahan Menggunakan Progressive Web Application." JTIM : Jurnal Teknologi Informasi dan Multimedia 1, no. 1 (2019): 8–13. http://dx.doi.org/10.35746/jtim.v1i1.6.

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Arrihu Archery is one of the archery clubs in the city of Mataram. Before taking the test to increase the level, participants will take part in the stabilization exercise in preparation for the exam. The problem faced was that the exercise carried out took a long time and the trainers had difficulty in monitoring the progress of the participants. This writing aims to accelerate the exercise and make it easier to monitor the training of participants. Therefore, it is necessary to build an Application to Evaluate the Development of Archery Athlete Exercises using Progressive Web Application. The
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Xue, Kaijia, Congqing Wang, Zhiyu Li, and Hanxin Chen. "Online Adaptive Error Compensation SVM-Based Sliding Mode Control of an Unmanned Aerial Vehicle." International Journal of Aerospace Engineering 2016 (2016): 1–14. http://dx.doi.org/10.1155/2016/8407491.

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Unmanned Aerial Vehicle (UAV) is a nonlinear dynamic system with uncertainties and noises. Therefore, an appropriate control system has an obligation to ensure the stabilization and navigation of UAV. This paper mainly discusses the control problem of quad-rotor UAV system, which is influenced by unknown parameters and noises. Besides, a sliding mode control based on online adaptive error compensation support vector machine (SVM) is proposed for stabilizing quad-rotor UAV system. Sliding mode controller is established through analyzing quad-rotor dynamics model in which the unknown parameters
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Yapanto, Alvian Mohamad. "Flail Chest: A Literature Review." Eduvest - Journal of Universal Studies 2, no. 4 (2022): 660–72. http://dx.doi.org/10.59188/eduvest.v2i4.428.

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This study aims to make a review about flail chest management so this can be a simple and useful reference for surgeons to make a decision for flail chest management decisions. The research method used in this research is descriptive qualitative method. The type of data used in this study is qualitative data, which is categorized into two types, namely primary data and secondary data. Sources of data obtained through library research techniques (library studies) which refers to sources available both online and offline such as: scientific journals, books and news sourced from trusted sources.
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Cheng, Yingying, Bo Xie, and Keyu An. "Analysis of Omni-Channel Evolution Game Strategy for E-Commerce Enterprises in the Context of Online and Offline Integration." Systems 11, no. 7 (2023): 321. http://dx.doi.org/10.3390/systems11070321.

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With the upgrading of people’s consumption patterns, the omni-channel supply chain becomes the mainstream form of e-commerce platform enterprise development. Aiming at two different e-commerce enterprises, we construct an evolutionary game model for enterprises’ “online+offline” omni-channel construction strategy by self-build or cooperating with brick-and-mortar stores. It is based on the Stackelberg and Cournot competition model, combined with the omni-channel pricing strategy, using the theory of perfect rationality and bounded rationality, and combing the non-cooperative game and evolution
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Ramachandran, Anjali, Rabee Rustum, and Adebayo J. Adeloye. "Review of Anaerobic Digestion Modeling and Optimization Using Nature-Inspired Techniques." Processes 7, no. 12 (2019): 953. http://dx.doi.org/10.3390/pr7120953.

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Although it is a well-researched topic, the complexity, time for process stabilization, and economic factors related to anaerobic digestion call for simulation of the process offline with the help of computer models. Nature-inspired techniques are a recently developed branch of artificial intelligence wherein knowledge is transferred from natural systems to engineered systems. For soft computing applications, nature-inspired techniques have several advantages, including scope for parallel computing, dynamic behavior, and self-organization. This paper presents a comprehensive review of such tec
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M., Meenakshi, and M. Seetharama Bhat. "Real-Time Fixed-Order LateralH2Controller for Micro Air Vehicle." Journal of Control Science and Engineering 2011 (2011): 1–15. http://dx.doi.org/10.1155/2011/594086.

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This paper presents the design and development of a fixed low-order, robustH2controller for a micro air vehicle (MAV) named Sarika-2. The controller synthesis uses strengthened discrete optimal projection equations and frequency-dependent performance index to achieve robust performance and stability. A single fixed gain low-order dynamic controller provides simultaneous stabilization, disturbance rejection, and sensor noise attenuation over the entire flight speed range of 16 m/sec to 26 m/sec. Comparative study indicates that the low-orderH2-controller achieves robust performance levels simil
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13

Ernala, Sindhu Kiranmai, Jordyn Seybolt, Dong Whi Yoo, Michael L. Birnbaum, John M. Kane, and Munmun De Choudhury. "The Reintegration Journey Following a Psychiatric Hospitalization: Examining the Role of Social Technologies." Proceedings of the ACM on Human-Computer Interaction 6, CSCW1 (2022): 1–31. http://dx.doi.org/10.1145/3512969.

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For people diagnosed with mental health conditions, psychiatric hospitalization is a major life transition, involving clinical treatment, crisis stabilization and loss of access of social networks and technology. The period after hospitalization involves not only management of the condition and clinical recovery but also re-establishing social connections and getting back to social and vocational roles for successful reintegration ? a significant portion of which is mediated by social technology. However, little is known about how people get back to social lives after psychiatric hospitalizati
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Wick, Maximilian, Bastian Lehrheuer, Thivaharan Albin, Jakob Andert, and Stefan Pischinger. "Decoupling of consecutive gasoline controlled auto-ignition combustion cycles by field programmable gate array based real-time cylinder pressure analysis." International Journal of Engine Research 19, no. 2 (2017): 153–67. http://dx.doi.org/10.1177/1468087417704342.

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Gasoline controlled auto-ignition combustion offers high potential for CO2 emission reduction, but faces challenges regarding combustion stability and high sensitivity to changing boundary conditions. Combustion chamber recirculation allows a wide operation range, but results in a strong coupling of consecutive cycles due to residuals that are transferred to the subsequent combustion cycle. The cycle coupling leads to phases of unstable operation with reduced efficiency and increased emission levels. State-of-the-art control algorithms use data-driven models of gasoline controlled auto-ignitio
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15

Zhang, Z., D. Wang, S. Feng, et al. "A portable neutron gamma discrimination detector based on NaIL and SiPM." Journal of Instrumentation 17, no. 06 (2022): T06005. http://dx.doi.org/10.1088/1748-0221/17/06/t06005.

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Abstract neutron-gamma detection technology is widely used in nuclear physics, high-energy physics, radiation medicine, and other fields. A NaIL scintillator coupled with a silicon photomultiplier (SiPM) can form a neutron-gamma detector with excellent discrimination, small size, and low cost. However, the performances of a NaIL scintillator and SiPM are affected by temperature, which leads to a shift in energy spectrum and deterioration in neutron-gamma discrimination. Most of the current studies have used digitizers to store data and analyze detector energy spectrum and waveform characterist
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16

Colorado, Julian D., Natalia Cera-Bornacelli, Juan S. Caldas, et al. "Estimation of Nitrogen in Rice Crops from UAV-Captured Images." Remote Sensing 12, no. 20 (2020): 3396. http://dx.doi.org/10.3390/rs12203396.

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Leaf nitrogen (N) directly correlates to chlorophyll production, affecting crop growth and yield. Farmers use soil plant analysis development (SPAD) devices to calculate the amount of chlorophyll present in plants. However, monitoring large-scale crops using SPAD is prohibitively time-consuming and demanding. This paper presents an unmanned aerial vehicle (UAV) solution for estimating leaf N content in rice crops, from multispectral imagery. Our contribution is twofold: (i) a novel trajectory control strategy to reduce the angular wind-induced perturbations that affect image sampling accuracy
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17

Ahmed, Shady E., and Omer San. "Breaking the Kolmogorov Barrier in Model Reduction of Fluid Flows." Fluids 5, no. 1 (2020): 26. http://dx.doi.org/10.3390/fluids5010026.

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Turbulence modeling has been always a challenge, given the degree of underlying spatial and temporal complexity. In this paper, we propose the use of a partitioned reduced order modeling (ROM) approach for efficient and effective approximation of turbulent flows. A piecewise linear subspace is tailored to capture the fine flow details in addition to the larger scales. We test the partitioned ROM for a decaying two-dimensional (2D) turbulent flow, known as 2D Kraichnan turbulence. The flow is initiated using an array of random vortices, corresponding to an arbitrary energy spectrum. We show tha
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18

Jones, Andrew D., William D. Collins, James Edmonds, et al. "Greenhouse Gas Policy Influences Climate via Direct Effects of Land-Use Change." Journal of Climate 26, no. 11 (2013): 3657–70. http://dx.doi.org/10.1175/jcli-d-12-00377.1.

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Abstract Proposed climate mitigation measures do not account for direct biophysical climate impacts of land-use change (LUC), nor do the stabilization targets modeled for phase 5 of the Coupled Model Intercomparison Project (CMIP5) representative concentration pathways (RCPs). To examine the significance of such effects on global and regional patterns of climate change, a baseline and an alternative scenario of future anthropogenic activity are simulated within the Integrated Earth System Model, which couples the Global Change Assessment Model, Global Land-Use Model, and Community Earth System
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19

Permana, Irvan, and Karina Gan. "Social construction of technology (SCoT) from generation X’s shopping experiences to omnichannel as new way of shopping." Bricolage : Jurnal Magister Ilmu Komunikasi 8, no. 2 (2022): 141. http://dx.doi.org/10.30813/bricolage.v8i2.3338.

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<p><em>Omnichannel is considered a new way of shopping that integrates online and offline methods to offer seamless shopping experiences. Omnichannel requires consumers adaptation to use the internet, mobile devices, and social media as tools for seamless shopping experiences. Based on 2021 YouGov’s report on omnichannel retail, 83% of Indonesians already used dual channels to shop, including generation X. How does generation X accept omnichannel and its technology as a new way of shopping? Using Social Construction of Technology (SCoT) theory, generation X is positioned as a relev
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20

Sharma, Atul, Sushil Raut, Kohei Shimasaki, Taku Senoo, and Idaku Ishii. "Visual-Feedback-Based Frame-by-Frame Synchronization for 3000 fps Projector–Camera Visual Light Communication." Electronics 10, no. 14 (2021): 1631. http://dx.doi.org/10.3390/electronics10141631.

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This paper proposes a novel method for synchronizing a high frame-rate (HFR) camera with an HFR projector, using a visual feedback-based synchronization algorithm for streaming video sequences in real time on a visible-light communication (VLC)-based system. The frame rates of the camera and projector are equal, and their phases are synchronized. A visual feedback-based synchronization algorithm is used to mitigate the complexities and stabilization issues of wire-based triggering for long-distance systems. The HFR projector projects a binary pattern modulated at 3000 fps. The HFR camera syste
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21

Alla, Alessandro, Dante Kalise, and Valeria Simoncini. "State-dependent Riccati equation feedback stabilization for nonlinear PDEs." Advances in Computational Mathematics 49, no. 1 (2023). http://dx.doi.org/10.1007/s10444-022-09998-4.

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AbstractThe synthesis of suboptimal feedback laws for controlling nonlinear dynamics arising from semi-discretized PDEs is studied. An approach based on the State-dependent Riccati Equation (SDRE) is presented for 2 and ∞ control problems. Depending on the nonlinearity and the dimension of the resulting problem, offline, online, and hybrid offline-online alternatives to the SDRE synthesis are proposed. The hybrid offline-online SDRE method reduces to the sequential solution of Lyapunov equations, effectively enabling the computation of suboptimal feedback controls for two-dimensional PDEs. Num
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Lin, Yegui, and Kexin Xing. "Visual servo optimization stabilization of nonholonomic mobile robots based on control Lyapunov functions." Measurement and Control, August 23, 2020, 002029402094496. http://dx.doi.org/10.1177/0020294020944960.

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This study considers the visual stabilization problem of nonholonomic mobile robots and proposes a novel optimization stabilization method for visual servo control of nonholonomic mobile robots with monocular cameras fixed onboard. The main idea of the method is to utilize control Lyapunov functions of discrete-time nonlinear systems to design a family of explicit stabilization control laws of the visual servo error system. The parameters of the control laws can indirectly reflect the performance of the visual servo controllers. Then taking account of visibility constraints and actuator limita
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23

Luchetti, A., M. Zanetti, D. Kalkofen, and M. De Cecco. "Stabilization of spherical videos based on feature uncertainty." Visual Computer, July 9, 2022. http://dx.doi.org/10.1007/s00371-022-02578-z.

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AbstractNowadays the trend is to acquire and share information in an immersive and natural way with new technologies such as Virtual Reality (VR) and 360$$^{\circ }$$ ∘ video. However, the use of 360$$^{\circ }$$ ∘ video, even more the use of VR head-mounted display, can generate general discomfort (“cybersickness”) and one factor is the video shaking. In this work, we developed a method to make the viewing of 360$$^{\circ }$$ ∘ video smoother and more comfortable to watch. First, the rotations are obtained with an innovative technique using a Particle Swarm Optimization algorithm considering
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Brown, James O., Alex Chatburn, David L. Wright, and Maarten A. Immink. "A Single Session of Mindfulness Meditation Expedites Immediate Motor Memory Consolidation to Improve Wakeful Offline Learning." Journal of Motor Learning and Development, 2022, 1–26. http://dx.doi.org/10.1123/jmld.2022-0016.

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Posttraining meditation has been shown to promote wakeful memory stabilization of explicit motor sequence information in learners who are experienced meditators. We investigated the effect of single-session mindfulness meditation on wakeful and sleep-dependent forms of implicit motor memory consolidation in meditation naïve adults. Immediately after training with a target implicit motor sequence, participants (N = 20, eight females, 23.9 ± 3.3 years) completed either a 10-min mindfulness meditation (N = 10) or a control listening task before exposure to task interference induced by training wi
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25

Kianfar, Armin, and Mahmoud I. Hussein. "Phononic-subsurface flow stabilization by subwavelength locally resonant metamaterials." New Journal of Physics, April 11, 2023. http://dx.doi.org/10.1088/1367-2630/accbe5.

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Abstract The interactions between a solid surface and a fluid flow underlie dynamical processes relevant to air, sea, and land vehicle performance and numerous other technologies. Key among these processes are unstable flow disturbances that contribute to fundamental transformations in the flow field. Precise control of these disturbances is possible by introducing a phononic subsurface (PSub). This comprises locally attaching a finite phononic structure perpendicular to an elastic surface exposed to the flowing fluid. This structure experiences ongoing excitation by an unstable flow mode, or
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Lebert, Jan, Namita Ravi, George Kensah, and Jan Christoph. "Real-Time Optical Mapping of Contracting Cardiac Tissues With GPU-Accelerated Numerical Motion Tracking." Frontiers in Cardiovascular Medicine 9 (May 18, 2022). http://dx.doi.org/10.3389/fcvm.2022.787627.

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Optical mapping of action potentials or calcium transients in contracting cardiac tissues are challenging because of the severe sensitivity of the measurements to motion. The measurements rely on the accurate numerical tracking and analysis of fluorescence changes emitted by the tissue as it moves, and inaccurate or no tracking can produce motion artifacts and lead to imprecise measurements that can prohibit the analysis of the data. Recently, it was demonstrated that numerical motion-tracking and -stabilization can effectively inhibit motion artifacts, allowing highly detailed simultaneous me
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She, Buxin, Yuqing Dong, and Yilu Liu. "Time Delay of Wide Area Damping Control in Urban Power Grid: Model-Based Analysis and Data-Driven Compensation." Frontiers in Energy Research 10 (April 27, 2022). http://dx.doi.org/10.3389/fenrg.2022.895163.

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Due to the rapid development of economies, large urban cities consume an increasing amount of energy and have a higher requirement for power quality. Voltage source converter based high voltage direct current (VSC-HVDC) is a promising device to transmit clean power from remote regions to urban power systems, while also providing wide area damping control (WADC) for frequency stabilization. However, the time-delay naturally existing in the VSC-HVDC system may degrade the performance of WADC and even result in instability. To address this issue, this paper develops a time-delay correction contro
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Temporiti, Federico, Alessandra Calcagno, Stefania Coelli, et al. "Early sleep after action observation and motor imagery training boosts improvements in manual dexterity." Scientific Reports 13, no. 1 (2023). http://dx.doi.org/10.1038/s41598-023-29820-5.

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AbstractThe systematic observation and imagination of actions promotes acquisition of motor skills. Furthermore, studies demonstrated that early sleep after practice enhances motor learning through an offline stabilization process. Here, we investigated behavioral effects and neurodynamical correlates of early sleep after action observation and motor imagery training (AO + MI-training) on motor learning in terms of manual dexterity. Forty-five healthy participants were randomized into three groups receiving a 3 week intervention consisting of AO + MI-training immediately before sleeping or AO
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Tóth-Fáber, Eszter, Dezso Nemeth, and Karolina Janacsek. "Lifespan developmental invariance in memory consolidation: evidence from procedural memory." PNAS Nexus, February 8, 2023. http://dx.doi.org/10.1093/pnasnexus/pgad037.

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Abstract Characterizing ontogenetic changes across the lifespan is a crucial tool in understanding neurocognitive functions. While age-related changes in learning and memory functions have been extensively characterized in the past decades, the lifespan trajectory of memory consolidation, a critical function that supports the stabilization and long-term retention of memories, is still poorly understood. Here we focus on this fundamental cognitive function and probe the consolidation of procedural memories that underlie cognitive, motor, and social skills and automatic behaviors. We used a life
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Chen, Zhe, Garrett J. Blair, Changliang Guo, et al. "A hardware system for real time decoding of in vivo calcium imaging data." eLife 12 (January 24, 2023). http://dx.doi.org/10.7554/elife.78344.

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Epifluorescence miniature microscopes ('miniscopes') are widely used for in vivo calcium imaging of neural population activity. Imaging data is typically collected during a behavioral task and stored for later offline analysis, but emerging techniques for online imaging can support novel closed-loop experiments in which neural population activity is decoded in real time to trigger neurostimulation or sensory feedback. To achieve short feedback latencies, online imaging systems must be optimally designed to maximize computational speed and efficiency while minimizing errors in population decodi
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Janák, Vladislav, Luděk Bartoněk, Lumír Hrabálek, Jiří Keprt, and Jiří Charamza. "The prototype BS-II for computer measurement of biomechanical characteristics of the human cadaverous lumbar spine." Journal of Orthopaedic Surgery and Research 14, no. 1 (2019). http://dx.doi.org/10.1186/s13018-019-1463-8.

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Abstract Background The new second-generation computer system BS-II (Bio-Spine-II) based on the National Instruments’ development environment has been designed and constructed for evaluating the stability of various surgical fixative methods of the cadaverous lumbar spine (L1–L5). BS-II holds the measured sample using aluminum fixtures and using four computer-controlled stepper motors; it performs a circular movement (warm up of the specimen), programmatically driven extension (back bend), right and left lateral flexion (lateral bend), left and right axial torsion (rotation), and axial compres
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