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Adaptive control strategies for effective integration of solar power into smart grids using reinforcement learning

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Energy Storage and Saving 2024年第4期3卷 327-340页

作者： Deepak Singh owais ahmad Shah Sujata Arora Department of Electrical and Electronics Engineering Noida International UniversityGautam Budh Nagar203201India Department of Electronics&Communication Engineering Dayananda Sagar UniversityHarohalliBengaluru562112India

Integrating solar power into smart grids is challenging because of the variable nature of solar *** study focuses on implementing reinforcement learning(RL)using a Deep Q-Network algorithm to enhance the stability and efficiency of a grid.A custom environment was designed using OpenAI Gym,in which real-time simulation of grid operations was conducted using real-time data on solar power,weather,and other grid *** trained RL agent exhibited high predictability in optimally distributing the load and managing the battery storage,with R-squared=0.886,mean average error=1,173,046.55 Wh,and root mean squared error=2,075,515.10 *** model effectively captured the seasonality and daily variations in solar power *** using the proposed model provides insights into future energy trends and *** reward function will be further refined and scaled for more complex energy systems by incorporating additional variables and hybrid *** study highlights the potential of RL-based adaptive control strategies for developing more efficient and resilient integration of renewable energy sources into smart grids.

关键词： Reinforcement learning Deep Q-network Smart grid Solar power integration Renewable energy management

On Characterization of Nonuniform Tight Wavelet Frames on Local Fields

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Analysis in Theory and Applications 2018年第2期34卷 135-146页

作者： owais ahmad Neyaz A.Sheikh Department of Mathematics National Institute of Technology

In this article, we introduce a notion of nonuniform wavelet frames on local fields of positive characteristic. Furthermore, we gave a complete characterization of tight nonuniform wavelet frames on local fields of positive characteristic via Fourier transform. Our results also hold for the Cantor dyadic group and the Vilenkin groups as they are local fields of positive characteristic.

关键词： Nonuniform wavelet frame tight wavelet frame Fourier transform.local field

Some New Inequalities for Wavelet Frames on Local Fields

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Analysis in Theory and Applications 2017年第2期33卷 134-148页

作者： Firdous A.Shah owais ahmad Neyaz A.Sheikh Department of Mathematics University of Kashmir South Campus Department of Mathematics National Institute of Technology

Wavelet frames have gained considerable popularity during the past decade, primarily due to their substantiated applications in diverse and widespread fields of science and engineering. Finding general and verifiable conditions which imply that the wavelet systems are wavelet frames is among the core problems in time-frequency analysis. In this article, we establish some new inequalities for wavelet frames on local fields of positive characteristic by means of the Fourier transform. As an application, an improved version of the Li-Jiang inequality for wavelet frames on local fields is obtained.

关键词： Frame inequalities wavelet frame local field Fourier transform.

Structural,optical,and photocatalytic properties of Bi_(1-x)RE_(x)FeO_(3)(RE=La,Ce,Pr,Nd,Sm;x=0,0.05,0.1) thin films

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Journal of Rare Earths 2025年第1期43卷 81-88,I0004页

作者： ahmad Gholizadeh Sakineh Hosseini School of Physics Damghan UniversityDamghanIran

Bismuth ferrite perovskite materials have recently attracted great attention because of their unique *** this study,Bi_(1-x)RE_(x)FeO_(3)(RE=La,Ce,Pr,Nd,Sm;x=0,0.05,0.1)thin films were deposited on glass substrates via low-temperature sol-gel assisted spin coating *** is found that in the presence of light rare-earth ions as the substitutions,the structural,morphological,and optical properties of the thin films are changed in the prepared thin *** find that the thin films have rhombohedral structures,and from field emission scanning electron microscopy(FESEM)images,it is observed that the substitution of light rare-earth ions for Bi^(3+)affects the surface morphology and grain size of the BiFeO_(3)(BFO)thin ***,the optical properties of prepared films were investigated via UV-visible *** all samples,the bandgap energy values are between 1.22 and 1.65 ***,the refractive index and extinction coefficient of samples are about 1.14-1.41 and 0.1-0.6,*** properties of the samples were investigated by measuring the degradation of methylene blue(MB)dye under irradiation of *** find that the light rare-earth substituted BFO thin films have better photocatalytic activity compared to pure BiFeO_(3) thin film,the reason can be described as the band gap varied between 1.20 and 1.65 eV for different rare earth ions which directly influences the photocatalytic properties of the investigated *** is observed that the prepared thin films can remove between 37.18%and 69.14%of dye after 180 min of *** study confirms that prepared thin films are a suitable candidate for photocatalytic applications.

关键词： Bismuth ferrite thin film Sol-gel spin coating Substitution effect Rareearth ions Photocatalytic activity

Effects of Repair Grouting and Jacketing on Corrosion Concrete Using Ultrasonic Method

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Structural Durability & Health Monitoring 2025年第2期19卷 265-284页

作者： Rivky Afanda ahmad Zaki Magister of Civil Engineering Universitas Muhammadiyah YogyakartaBantul55183Indonesia Department of Civil Engineering Faculty of EngineeringUniversitas Muhammadiyah YogyakartaBantul55183Indonesia

Concrete is one of the most important elements in building ***,concrete used in construction is susceptible to damage due to *** influence of corrosive substances causes changes in the reinforcing steel and affects the strength of the *** repair method is one approach to overcome this *** research aims to determine the effect of grouting and jacketing repairs on corroded *** concrete used has dimensions of 15 cm×15 cm×60 cm with planned corrosion variations of 50%,60%,and 70%.The test objects were tested using the Non-Destructive Testing(NDT)method using Ultrasonic Pulse Velocity(UPV).The test results show that the average speed of normal concrete is 5070 m/s,while the lowest average speed is 3070 m/s on the 70%planned corrosion test *** test object was then given a load of 1600 *** this stage,there is a decrease in speed and wave shape with the lowest average speed obtained at 2753 m/*** repair method is an effort to restore concrete performance by using grouting and *** is done by injecting mortar material into *** involves adding thickness to the existing concrete layer with additional layers of *** improvements were made,there was an improvement in the UPV test,with a peak speed value of 4910 m/*** concrete by filling cracks can improve concrete continuity and reduce waveform distortion,thereby increasing wave propagation speed.

关键词： Corrosion concrete repair grouting jacketing non-destructive testing(NDT) ultrasonic pulse velocity(UPV)

Emerging insights into the function of very long chain fatty acids at cerebellar synapses

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Neural Regeneration Research 2025年第6期20卷 1709-1710页

作者： Martin-Paul Agbaga Mohiuddin ahmad Department of Cell Biology and Ophthalmology University of Oklahoma Health Sciences Centerand Dean McGee Eye InstituteOklahoma CityOKUSA

Very long chain-saturated and-polyunsaturated fatty acids(VLC-SFA and VLC-PUFA, respectively) are a functionally important class of fatty acids containing 28 carbons or more in their acyl chain. They are synthesized by the elongation of very long fatty acids-4(ELOVL4) enzyme, expressed mainly in the brain, retina, skin, testes, and meibomian gland, where these fatty acids are found(Agbaga et al., 2008). Further, these organs exhibit tissuespecific VLC-PUFA and VLC-SFA biosynthesis and incorporation into complex lipids for specific functions. In the brain, skin, and Meibomian glands, the ELOVL4 mainly makes VLC-SFA, which are incorporated into complex sphingolipids. In the retina, the ELOVL4 makes VLC-PUFA that are incorporated into phosphatidylcholine, that are critical for visual function, while in testes and sperm, the VLC-PUFA are incorporated into sphingolipids that are critical for fertility(Yeboah et al., 2021).

关键词： functions function insight

IDSSCNN-XgBoost:Improved Dual-Stream Shallow Convolutional Neural Network Based on Extreme Gradient Boosting Algorithm for Micro Expression Recognition

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Computers, Materials & Continua 2025年第1期82卷 729-749页

作者： Adnan ahmad Zhao Li Irfan Tariq Zhengran He School of Information Science and Engineering Southeast UniversityNanjing210016China

Micro-expressions(ME)recognition is a complex task that requires advanced techniques to extract informative features fromfacial *** deep neural networks(DNNs)with convolutional structures have been ***,unlike DNNs,shallow convolutional neural networks often outperform deeper models in mitigating overfitting,particularly with small ***,many of these methods rely on a single feature for recognition,resulting in an insufficient ability to extract highly effective *** address this limitation,in this paper,an Improved Dual-stream Shallow Convolutional Neural Network based on an Extreme Gradient Boosting Algorithm(IDSSCNN-XgBoost)is introduced for ME *** proposed method utilizes a dual-stream architecture where motion vectors(temporal features)are extracted using Optical Flow TV-L1 and amplify subtle changes(spatial features)via EulerianVideoMagnification(EVM).These features are processed by IDSSCNN,with an attention mechanism applied to refine the extracted effective *** outputs are then fused,concatenated,and classified using the XgBoost *** comprehensive approach significantly improves recognition accuracy by leveraging the strengths of both temporal and spatial information,supported by the robust classification power of *** proposed method is evaluated on three publicly available ME databases named Chinese Academy of Sciences Micro-expression Database(CASMEII),Spontaneous Micro-Expression Database(SMICHS),and Spontaneous Actions and Micro-Movements(SAMM).Experimental results indicate that the proposed model can achieve outstanding results compared to recent *** accuracy results are 79.01%,69.22%,and 68.99%on CASMEII,SMIC-HS,and SAMM,and the F1-score are 75.47%,68.91%,and 63.84%,*** proposed method has the advantage of operational efficiency and less computational time.

关键词： ME recognition dual stream shallow convolutional neural network euler video magnification TV-L1 XgBoost

Secure Channel Estimation Using Norm Estimation Model for 5G Next Generation Wireless Networks

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Computers, Materials & Continua 2025年第1期82卷 1151-1169页

作者： Khalil Ullah Song Jian Muhammad Naeem Ul Hassan Suliman Khan Mohammad Babar Arshad ahmad Shafiq ahmad Faculty of Information Engineering and Automation Kunming University of Science and TechnologyKunming650500China Department of Computer Science Abbottabad University of Science and TechnologyHavelianAbbottabad22500Pakistan Department of Computing and Electronics Engineering Middle East CollegeMuscat124Oman Department of CS&IT Pak-Austria Fachhochschule Institute of Applied Sciences and Technology MangHaripur22621Pakistan Industrial Engineering Department College of EngineeringKing Saud UniversityRiyadh11421Saudi Arabia

The emergence of next generation networks(NextG),including 5G and beyond,is reshaping the technological landscape of cellular and mobile *** networks are sufficiently scaled to interconnect billions of users and *** in academia and industry are focusing on technological advancements to achieve highspeed transmission,cell planning,and latency reduction to facilitate emerging applications such as virtual reality,the metaverse,smart cities,smart health,and autonomous *** continuously improves its network functionality to support these *** input multiple output(MIMO)technology offers spectral efficiency,dependability,and overall performance in *** article proposes a secure channel estimation technique in MIMO topology using a norm-estimation model to provide comprehensive insights into protecting NextG network components against adversarial *** technique aims to create long-lasting and secure NextG networks using this extended *** viability of MIMO applications and modern AI-driven methodologies to combat cybersecurity threats are explored in this ***,the proposed model demonstrates high performance in terms of reliability and accuracy,with a 20%reduction in the MalOut-RealOut-Diff metric compared to existing state-of-the-art techniques.

关键词： Next generation networks massive mimo communication network artificial intelligence 5G adversarial attacks channel estimation information security

The genetics of pediatric inflammatory bowel disease:Towards precision medicine

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BIOCELL 2025年第1期49卷 149-160页

作者： ahmad SHAHIR MOHAMAD NAZRI NAZIHAH MOHD YUNUS MARAHAINI MUSA Human Genome Centre School of Medical SciencesUniversiti Sains MalaysiaKubang Kerian16150Malaysia

Pediatric inflammatory bowel disease(IBD)is a chronic and heterogeneous *** is commonly classified into Crohn’s disease and ulcerative *** is linked to serious symptoms and *** onset of IBD commonly occurs during *** the significant number of cases globally(~5 million),the causes of pediatric IBD,which constitutes 25%of IBD patients,are not yet fully *** from environmental factors,genetic factors contribute to a higher risk of developing *** predisposition risk of IBD can be investigated using genetic *** mechanisms of pediatric IBD are highly complex which resulted in difficulty in selecting effective treatment or patient *** variation of IBD would serve as a basis for precision medicine and allow for the discovery of more robust treatment avenues for this condition in pediatric *** review aims to discuss the genetics of pediatric IBD,and current development in the screening,diagnosis,and treatment based on genetic profiling of pediatric IBD subjects toward more personalized management of this disease.

关键词： Genetics Inflammatory bowel disease Personalized medicine