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461
Automatic Jig-Assisted Battery Exchange for Lightweight Drones
Published 2024-11-01“…The purpose of this work was to research how a robotic arm could be used to automatically exchange flight batteries in flying drones without interference from operators and create a proof-of-concept system for evaluation. …”
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462
Dynamic spectrum allocation strategy with probabilistic feedback mechanism and performance analysis
Published 2015-07-01“…By introducing probabilistic feedback mechanism and energy detection threshold to cognitive radio networks,a novel dynamic spectrum allocation strategy is proposed to trade off the throughput and average delay of secondary users,as well as meet various network requirements.Considering the imperfect sensing results of secondary users,a kind of priority queueing model is established,in which two classes of users may interfere with each other,then the state transition probability matrix is constructed.Employing the method of matrix-geometric solution,the stationary distribution of system model is derived.Accordingly,the expressions for the performance measures in terms of channel utilization,throughput of secondary users,average delay of secondary users and interference ratio of primary users are given.With numerical experiments and system simulations,the effectiveness of the proposed dynamic spectrum allocation strategy is verified.Finally,the optimal design of energy detection threshold is provided.…”
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463
Dynamic spectrum allocation strategy with probabilistic feedback mechanism and performance analysis
Published 2015-07-01“…By introducing probabilistic feedback mechanism and energy detection threshold to cognitive radio networks,a novel dynamic spectrum allocation strategy is proposed to trade off the throughput and average delay of secondary users,as well as meet various network requirements.Considering the imperfect sensing results of secondary users,a kind of priority queueing model is established,in which two classes of users may interfere with each other,then the state transition probability matrix is constructed.Employing the method of matrix-geometric solution,the stationary distribution of system model is derived.Accordingly,the expressions for the performance measures in terms of channel utilization,throughput of secondary users,average delay of secondary users and interference ratio of primary users are given.With numerical experiments and system simulations,the effectiveness of the proposed dynamic spectrum allocation strategy is verified.Finally,the optimal design of energy detection threshold is provided.…”
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464
Research on Key Control Technology of Intelligent Rolling Contact Fatigue Test Facility
Published 2020-01-01“…For controlling the loads in high precision, the control method took into consideration the influence by two factors, displacement and the load. The nonlinear interference and excess torque in load control are effectively suppressed. …”
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465
EROSIVE PROCESSES IN THE AREA OF RAPOSA TOWN IN MARANHÃO
Published 2005-05-01“…The dynamics of the environment always awakened the human curiosity, being the aim of analysis from part of the societies through the history. The interference of human being in the environment results in environmental alterations and natural dynamics of the landscape, provoking modifications in several existent ecosystems.According to Silva (1999), the problems that result from the irracional use of the soil have awakened more interest from scholars and researchers from around the world. …”
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466
Engineering FKBP-Based Destabilizing Domains to Build Sophisticated Protein Regulation Systems.
Published 2015-01-01“…The technique involves tagging a protein of interest (POI) with a destabilizing domain (DD) specifically controlled by a small molecule. The successful construction of such fusion proteins may, however, be limited by functional interference of the DD epitope with electrostatic interactions required for full biological function of proteins. …”
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467
Configuration Design and Topology Description of the Power Release Latch with Variable Topology Characteristic
Published 2020-06-01“…Aiming at the demand of dual branch chains cooperative drive of the electrical lock and the power release, also the non-interference between the multiple kinematic branch chains of the vehicle latch, a novel power release kinematic chain with the variable topological characteristic is constructed. …”
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468
Effect of Virtual Inertia Control on the Stability of Primary Frequency Regulation
Published 2016-01-01“…In order to research and prove the support effect of virtual inertia control on stable grid frequency, it constructed a digital simulation model of 110 kV HVDC system, and utilized DC transmission capacitance to imitate virtual inertia and then put it into control system, thus the grid inertia was changed and the anti-interference ability of frequency was improved. …”
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469
Metro Traffic Flow Prediction via Knowledge Graph and Spatiotemporal Graph Neural Network
Published 2022-01-01“…However, in addition to the spatiotemporal characteristics, the interference of various external factors needs to be considered in traffic flow prediction, including severe weather, major events, traffic control, and metro failures. …”
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470
Time-varying Reliability Analysis of Planetary Gear Reducers Based on Fatigue Failure
Published 2024-01-01“…To solve this problem, firstly, according to the stress-strength interference theory, the time-varying reliability model of planetary gear reducers under fatigue failure (mainly tooth surface contact fatigue failure and tooth root bending fatigue failure) is constructed. …”
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471
A Blind Source Extraction Method based on Self-learned Dictionary and Its Application in Fault Diagnosis of Bearing Multi-type Fault
Published 2022-02-01“…A BSE based on sparse representation self-learned dictionary method is proposed to solve the above problem.Firstly,apply the self-learned sparse dictionary originating from sparse representation on the multi-type faults vibration signals directly and a set of self-learning dictionaries are obtained.Then,the multi-type faults vibration signals are re-constructed basing on the obtained learned dictionary to eliminate noise and interference signals.Finally,apply the BSE method on compound fault signals of reconstructed rolling bearings,each single fault signal of rolling bearing is extracted,and then the envelope demodulation analysis is carried out one by one to obtain the corresponding fault characteristics.Feasibility and effectiveness of the proposed method are verified through experiment.…”
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472
Modeling of the 2.4 GHz wireless channel path loss in substation
Published 2016-07-01“…In order to assess the influence of electromagnetic interference in the substation of the electric power communication system,frequency measurement method was adopted to obtain the data of 2.4 GHz electromagnetic wave path loss of the substation of 110 kV and 220 kV in a certain city.By using the method of minimum mean square error (MMSE) and cumulative sum (CUSUM) to estimate the parameters of path loss model such as path loss index and the standard deviation,the path loss model was set up according to measured data,respectively.The simulation results show that the gap between estimation results and the measured values is not big.In addition,a ZigBee simulation system was constructed to simulate the relationship of bit error rate (BER) varies with distance in two cases of the signal to noise ratio (SNR) at 5 dB and 10 dB respectively.A research basis for short distance wireless communication devices decorated in the substation environment was provided.…”
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473
On the Holographic Spectral Effects of Time-Interval Subdivisions
Published 2025-03-01“…Analogous to spatial holograms, where information is distributed across interference patterns, temporal intervals encode information as a discrete whole. …”
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474
Research on millimeter-wave radar-assisted multi-agent collaborative localization and mapping
Published 2024-09-01“…However, the limited perception capabilities of a single agent and the susceptibility of visual sensors to interference make it challenging for traditional methods to meet the demands of real-time localization and mapping in complex and dynamic environments. …”
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475
Automatic Quality Assessment of Speech-Driven Synthesized Gestures
Published 2022-01-01“…The current evaluation method still needs manual participation, but it is inefficient in the industry of synthetic gestures and has the interference of human factors. So we need a model that can construct an automatic and objective quantitative quality assessment of the synthesized gesture video. …”
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476
Sliding mode control of electronic mechanical braking system based on new power exponential
Published 2025-01-01“…Given the fluctuations of braking torque and pressure caused by the thickness difference, mechanical interference and end face jumping of the brake disc in the rail trains' electronic mechanical braking system, a force closed-loop sliding mode control algorithm features stronger robustness than traditional PI algorithm was constructed. …”
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477
Developing a Core Outcome Set for Pediatric and Adult Acute and Chronic Pain Extended Reality Trials: Delphi Consensus-Building Process
Published 2025-05-01“…By unanimous vote at the consensus conference, pain severity, adverse events, user experience, and psychological constructs were identified as mandatory domains to be assessed in all XR trials for acute and chronic pain, with the addition of pain interference for chronic pain trials. …”
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478
Synthetic in vitro transcriptional oscillators
Published 2011-02-01“…Finally, a three‐switch ring oscillator was constructed and analyzed. Mathematical modeling guided the design process, identified experimental conditions likely to yield oscillations, and explained the system's robust response to interference by short degradation products. …”
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479
The muscle oxidative regulatory response to acute exercise is not impaired in less advanced COPD despite a decreased oxidative phenotype.
Published 2014-01-01“…Because exercise-induced hypoxia and oxidative stress may interfere with Oxphen response, oxygen saturation and oxidative stress markers were assessed as well. …”
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480
Ecological Health Assessment on the Coastal Waters in the Yellow River Estuary Using Phytoplankton Index of Biotic Integrity (P-IBI)
Published 2025-04-01“…Conversely, for indicators which decreased with increasing interference, the best expected value was 95% quantile. …”
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