Learning-based methods have become mainstream for solving residential energy scheduling problems. In order to improve the learning efficiency of existing methods and increase the utilization of renewable energy, we pr...
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Learning-based methods have become mainstream for solving residential energy scheduling problems. In order to improve the learning efficiency of existing methods and increase the utilization of renewable energy, we propose the Dyna actiondependent heuristic dynamic programming(Dyna-ADHDP)method, which incorporates the ideas of learning and planning from the Dyna framework in action-dependent heuristic dynamic programming. This method defines a continuous action space for precise control of an energy storage system and allows online optimization of algorithm performance during the real-time operation of the residential energy model. Meanwhile, the target network is introduced during the training process to make the training smoother and more efficient. We conducted experimental comparisons with the benchmark method using simulated and real data to verify its applicability and performance. The results confirm the method's excellent performance and generalization capabilities, as well as its excellence in increasing renewable energy utilization and extending equipment life.
Background Vitamin D-3 has emerged as a potential therapeutic agent for alleviating tic symptoms in children with chronic tic disorders (CTDs). This study aims to evaluate the comparative efficacy of high-dose and low...
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Background Vitamin D-3 has emerged as a potential therapeutic agent for alleviating tic symptoms in children with chronic tic disorders (CTDs). This study aims to evaluate the comparative efficacy of high-dose and low-dose vitamin D-3 supplementation on tic severity and serum 25-hydroxyvitamin D 25(OH)D levels in children with CTDs. Methods A randomized controlled trial was conducted with 83 children aged 4 to 15 years diagnosed with CTDs. Participants were randomly assigned to receive either high-dose vitamin D-3 (5,000 IU/day) or low-dose vitamin D-3 (1,000 IU/day) for three months. The primary outcome was tic severity, assessed using the Yale Global Tic Severity Scale (YGTSS), while secondary outcomes included changes in serum 25(OH)D and calcium levels. Tic severity and biochemical markers were measured at baseline and after the intervention to assess the effects of vitamin D-3 supplementation. Results Both the high-dose and low-dose groups showed significant improvements in tic severity and increases in serum 25(OH)D levels (p < 0.05). The high-dose group exhibited a significantly greater reduction in tic severity and a more substantial increase in serum 25(OH)D levels compared to the low-dose group (p < 0.05). No significant differences were observed in serum calcium levels between the group (p > 0.05). Furthermore, multivariate linear regression analysis revealed a significant negative association between increases in serum 25(OH)D levels and reductions in tic severity (p = -2.816, p < 0.05). Conclusion High-dose vitamin D-3 supplementation is more effective than low-dose supplementation in reducing tic severity and increasing serum 25(OH)D levels in children with CTDs. These findings suggest that high-dose vitamin D-3 may serve as a valuable adjunctive therapy for managing CTDs.
CO2 chemisorption and activation are two crucial factors that can significantly impact the overall CO2 conversion efficiency. However, achieving effective modulation of these processes in metal-free photocatalysts has...
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CO2 chemisorption and activation are two crucial factors that can significantly impact the overall CO2 conversion efficiency. However, achieving effective modulation of these processes in metal-free photocatalysts has proven to be challenging. In this study, we present a novel approach for activating CO2 molecules by selectively removing some amino groups at the boundary of carbon nitride (CN). By doing so, we observed a concentration of photogenerated electrons at the nitrogen atoms neighboring the eliminated -NH2 group. This electron concentration enhances the chemisorption and activation of CO2, resulting in lowered energy barriers for the rate-determining step from CO2 to *COOH. Interestingly, we found that only the nitrogen atoms adjacent to the removed -NH2 group in CN serve as catalytic sites, in contrast to all the nitrogen atoms neighboring the -NH2 group in CN-NH2. As a result, CN exhibits superior catalytic efficiency, with a turnover frequency (TOF) for CO that is 23.11 times higher than that of CN-NH2 under identical conditions.
In recent years, there has been a growing interest in dynamic hand gestures as a natural means of human-computer interaction. However, existing methods for recognizing dynamic gestures have certain limitations, partic...
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In recent years, there has been a growing interest in dynamic hand gestures as a natural means of human-computer interaction. However, existing methods for recognizing dynamic gestures have certain limitations, particularly in consistently capturing and focusing on the hand movement region across various motion patterns. This research paper presents LMNet, an innovative and efficacious network comprising the Long-term Aggregation Module and the Motion Excitation Module. The Motion Excitation Module exploits motion information extracted from neighboring frames to amplify motion-sensitive channels, while the Long-term Aggregation Module harnesses dynamic convolution to assimilate temporal information from diverse motion patterns. Rigorous experimentation conducted on the EgoGesture and Jester datasets demonstrates that LMNet surpasses the majority of prevailing approaches in terms of accuracy, while concurrently upholding an optimal computational cost.
Mixed-dimensional van der Waals(vdW)heterostructures based on two-dimensional transition metal dichalcogenides and threedimensional semiconductors have led to a new era in next-generation optoelectronics due to the hi...
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Mixed-dimensional van der Waals(vdW)heterostructures based on two-dimensional transition metal dichalcogenides and threedimensional semiconductors have led to a new era in next-generation optoelectronics due to the high-quality interfaces and energy band complementation,especially in broadband photodetectors which can be used for all-weather navigation,object identification,***,the reported photodetectors conventionally operated in photodiode mode with low responsivity and a narrow response *** this study,we report a p-WSe_(2)/n-Ge vdW heterojunction phototransistor with a Schottky barrier collector on n-Ge for broadband *** hole/electron injection ratio from p-WSe_(2)/n-Ge heterojunction under forward bias due to their large bandgap offset renders the high photocurrent gain,while the Ge Schottky barrier limits the dark *** responsivities of the phototransistor at 1.0 V emitter-collector bias are 55,95,and 120 A·W−1 at 405,1,310,and 1,550 nm,respectively,which is superior to that of the corresponding p-WSe_(2)/n-Ge *** phototransistor shows a high photocurrent gain of 80,a specific detectivity of 1011 Jones,as well as a fast response time of 290μs at 1,550 *** results suggest that the novel phototransistor being implemented with complementary metal-oxide-semiconductor processing is an ideal strategy for high-performance broadband photodetection.
Background Establishing mixed-species plantations is increasingly recognized as an important silvicultural measure because they are more productive than *** over-yielding is attributed to the complementary resource us...
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Background Establishing mixed-species plantations is increasingly recognized as an important silvicultural measure because they are more productive than *** over-yielding is attributed to the complementary resource use between component tree species,yet it remains largely unknown whether and how component tree species adjust nutrient acquisition and utilization strategies to achieve complementary nutrient ***,we measured soil nitrogen(N)availability and transformation rates,leaf N resorption efficiency and proficiency,and nine root mor-phological,physiological and mycorrhizal traits tightly related to N acquisition in 20-year-old pure and mixed stands of Pinus sylvestris ***(Mongolian pine)and Populus simonii(Simon poplar),northeast china.
Results Tree species mixing had negative effects on soil nitrate concentration and net N mineralization rate,but had positive effects on absorptive fine root *** to growing alone,Mongolian pine in mixed stands had higher leaf N resorption efficiency,and produced more absorptive fine roots with more-efficient morphological features in nutrient acquisition characterized by higher specific root length and lower root tissue ***,Simon poplar had greater root length density,root area index,and the relative abundance of ectomycorrhizal fungi with genetic potential to produce class Ⅱ peroxidases in mixed than pure stands.
Conclusions These findings highlight that component species express high plasticity in nutrient acquisition and utilization traits in response to tree species mixing,and suggest that this high plasticity could be responsible for the over-yielding of mixed-species plantations.
Proper management of nitrogen-containing pig manure is crucial to realize its benefits of supporting plants-grow as fertilizer while minimizing its impact on the environment and climate change. Dry collection, rinsing...
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Conductive polymer foam(CPF)with excellent compressibility and variable resistance has promising applications in electromagnetic interference(EMI)shielding and other integrated functions for wearable ***,its insuffici...
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Conductive polymer foam(CPF)with excellent compressibility and variable resistance has promising applications in electromagnetic interference(EMI)shielding and other integrated functions for wearable ***,its insufficient change amplitude of resistance with compressive strain generally leads to a degradation of shielding performance during ***,an innovative loading strategy of conductive materials on polymer foam is proposed to significantly increase the contact probability and contact area of conductive components under *** inter-skeleton conductive films are constructed by loading alginate-decorated magnetic liquid metal on the polymethacrylate films hanged between the foam skeleton(denoted as AMLM-PM foam).Traditional point contact between conductive skeletons under compression is upgraded to planar contact between conductive ***,the resistance change of AMLM-PM reaches four orders of magnitude under ***,the inter-skeleton conductive films can improve the mechanical strength of foam,prevent the leakage of liquid metal and increase the scattering area of EM ***-PM foam has strain-adaptive EMI shielding performance and shows compression-enhanced shielding effectiveness,solving the problem of traditional CPFs upon *** upgrade of resistance response also enables foam to achieve sensitive pressure sensing over a wide pressure range and compression-regulated Joule heating function.
Oxygen transport properties are critical for mixed ionic-electronic conductors, which are applied in high-temperature devices such as solid oxide fuel cells and oxygen separation membranes. These properties are widely...
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Oxygen transport properties are critical for mixed ionic-electronic conductors, which are applied in high-temperature devices such as solid oxide fuel cells and oxygen separation membranes. These properties are widely determined via chemical relaxation induced by changes in oxygen partial pressure through a gas switch. However, the abrupt atmospheric change leads to unstable boundary conditions and thus unreliable transport kinetics. To address this problem, we report the primary efforts to develop temperature induced relaxation (TIR), where the relaxation is induced by changing the temperature rather than pressure. The fundamentals of TIR are carefully discussed, showing that chemical relaxation can be induced at a relatively high rate. The TIR technique is experimentally demonstrated with a custom-made system using La0.6Sr0.4Co0.2Fe0.8O3-delta as a model material. The results show that the relaxation process occurs at constant oxygen partial pressure and temperature, the relaxation curves match well with theoretical predictions, and the oxygen reduction reaction kinetics including the chemical surface exchange coefficient and chemical bulk diffusion coefficient can be determined by decreasing the temperature. Furthermore, the coefficients at different temperatures and oxygen partial pressures are determined and compared with those obtained with well-known electrical conductivity relaxation, revealing that TIR is a promising technique for determining the oxygen transport kinetics of nonstoichiometric oxides.
In response to the lack of pipeline behavior modeling in Instruction-Set Simulators (ISS) and the performance limitations of Cycle-Accurate Simulators (CAS), this paper proposes Pipe-DBT, a pipeline simulation framewo...
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In response to the lack of pipeline behavior modeling in Instruction-Set Simulators (ISS) and the performance limitations of Cycle-Accurate Simulators (CAS), this paper proposes Pipe-DBT, a pipeline simulation framework based on Dynamic Binary Translation (DBT). This method achieves a balance between accuracy and efficiency through two key techniques: (1) the design of a pipeline state descriptor called Pipsdep, which abstracts data hazards and resource contentions in the form of formal rules about resource occupancy and read/write behaviors, thereby avoiding low-level hardware details;(2) the introduction of a coroutine-based instruction execution flow partitioning mechanism that employs dynamic suspension/resumption to realize cycle-accurate scheduling in multi-stage pipelines. Implemented on QEMU, Pipe-DBT supports variable-length pipelines, a Very Long Instruction Word (VLIW) architecture with four-issue capability, and pipeline forwarding. Under typical DSP workloads, it achieves a simulation speed of 400-1100 KIPS, representing a 2.3x\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\times$$\end{document} improvement over Gem5 in cycle-accurate mode. Experimental results show that only modular extensions to the host DBT framework are required to accommodate heterogeneous pipeline microarchitectures, thereby providing a high-throughput simulation infrastructure for processor design. To the best of our knowledge, this is the first pipeline-level simulation model implemented on a DBT simulator.
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