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deformation behavior of SmCo nanograin magnets via amorphization and recrystallization

Journal of rare Earths 2025年第4期43卷 758-765,I0005页

作者： Wei Quan Longfei Ma Yanbai Chen Niuniu Wang Hubin Luo Qiang Zheng Juan du Institute of Materials School of Materials Science and EngineeringShanghai UniversityShanghai200444China Key Laboratory of Magnetic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo315201China

In recent years,high coercivity nanocrystalline magnets based on the critical single domain size theory have received increasing ***,nanocrystalline magnets are difficult to enhance the remanent magnetization by forming textures with conventional magnetic field *** of nanocrystalline magnets is usually done using the hot pressing and hot deformation technique,but there are some difficulties in applying this technique to form texture in SmCo *** discover and solve the difficulties of obtaining texturized nanocrystalline magnets during the deformation process,samarium cobalt magnets with different degrees of deformation were first experimentally prepared by low strain rate hot deformation ***,molecular dynamics simulations were utilized to study the micro structural changes and the multi-phase formation process during hot *** process of deformation together with the reason why it is difficult to form textures in SmCo systems by lowtemperature hot deformation is discussed,and the strain energy densities of SmCo multiphase in multiple directions were calculated,which gives a feasible method to form low-temperature hot deformation textures in SmCo systems experimentally.

关键词： rare earths SmCo permanent magnet Phase transformation Molecular dynamics simulation deformation texture

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regulation of PVT-CeA Circuit in deoxynivalenol-Induced Anorexia and Aversive-Like Emotions

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AdVANCEd SCIENCE 2025年第16期12卷 e2417068页

作者： Yang, Liu-Nan Tang, Mingmeng Nuessler, Andreas K. Liu, Liegang Yang, Wei Huazhong Univ Sci & Technol Tongji Med Coll Dept Nutr & Food Hyg Hubei Key Lab Food Nutr & Safety Hangkong Rd 13 Wuhan 430030 Peoples R China Huazhong Univ Sci & Technol Dept Nutr & Food Hyg Tongji Med Coll Sch Publ Hlth Hangkong Rd 13 Wuhan 430030 Peoples R China Huazhong Univ Sci & Technol Tongji Med Coll Sch Publ Hlth MOE Key Lab Environm & Hlth Hangkong Rd 13 Wuhan 430030 Peoples R China NHC Specialty Lab Food Safety Risk Assessment & St Hangkong Rd 13 Wuhan 430030 Peoples R China Univ Tubingen BG Trauma Ctr Dept Traumatol Schnarrenbergstr 95 D-72076 Tubingen Germany

Neuronal plasticity in the central amygdala (CeA) is essential for modulating feeding behaviors and emotional responses, potentially influencing reactions to deoxynivalenol (dON). Acute oral administration of dON elicits a dose-responsive reduction in food intake, accompanied by pronounced alterations in locomotor activity and feeding frequency. This study investigates circuitry adaptations that mediate dON's effects on feeding, by targeting of GABA neurons in the CeA. Following exposure to dON, an increase in connectivity between the paraventricular nucleus of the thalamus (PVT) and CeAGABA neurons is observed, suggesting the involvement of this pathway in dON's adverse effects on feeding and emotional states. Chemogenetic and optogenetic manipulations of CeAGABA neurons resulted in substantial alterations in mice's feeding and overall activity. These findings suggest that CeAGABA neurons are involved in dON-induced anorexia and aversive-like emotional responses. Additionally, the administration of the SCN10A antagonist (A-803467) effectively mitigated dON-induced anorexia and aversive-like emotions, highlighting the pivotal role of the PVT-CeA circuit and CeAGABA neurons in regulating the physiological and emotional impacts of dON. These findings have significant implications for public health and clinical interventions, offering potential therapeutic strategies to mitigate dON's adverse effects on human health.

关键词： anorexia aversive-like emotions central amygdala (CeA) deoxynivalenol (dON) paraventricular thalamus (PVT)

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Artificial Intelligence for Wireless Physical-Layer Technologies (AI4PHY): A Comprehensive Survey

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IEEE TrANSACTIONS ON COGNITIVE COMMUNICATIONS ANd NETWOrKING 2024年第3期10卷 729-755页

作者： Ye, Neng Miao, Sirui Pan, Jianxiong Ouyang, Qiaolin Li, Xiangming Hou, Xiaolin Beijing Inst Technol Sch Cyberspace Sci & Technol Beijing 100081 Peoples R China Beijing Inst Technol Sch Informat & Elect Beijing 100081 Peoples R China DOCOMO Beijing Commun Labs Co Ltd Wireless Technol Dept Beijing 100190 Peoples R China

Artificial intelligence (AI) has become a promising solution for meeting the stringent performance requirements on wireless physical layer in sixth-generation (6G) communication systems, due to its strong ability to learn complex model, achieve end-to-end optimization and adapt to dynamic environments. This article provides a comprehensive review with respect to artificial intelligence for wireless physical-layer technologies (AI4PHY). Specifically, we first analyze the characteristics of the classic AI techniques and their potential applications for physical-layer technologies. Then we study the AI-enhanced designs from the point of view of the basic physical-layer modules, including coding, modulation, multiple access, multiple-input-multiple-output (MIMO), channel estimation, as well as relay transmission. The standardization progress of AI4PHY in 3GPP is also discussed. Based on the current AI4PHY researches, we propose some potential future research directions to inspire and encourage the further exploration.

关键词： Artificial intelligence Wireless communication Training Surveys MIMO communication Encoding Modulation communication systems encoding modulation MIMO systems standardization

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Improving Polyp Segmentation with Boundary-Assisted Guidance and Cross-Scale Interaction Fusion Transformer Network

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PrOCESSES 2024年第5期12卷 1030-1030页

作者： Jiang, Lincen Hui, Yan Fei, Yuan Ji, Yimu Zeng, Tao Nanjing Univ Posts & Telecommun Sch Commun & Informat Engn Nanjing 210023 Peoples R China Nanjing Vocat Univ Ind Technol Sch Comp & Software Nanjing 210023 Peoples R China Nanjing Univ Posts & Telecommun Coll Elect & Opt Engn Nanjing 210023 Peoples R China Nanjing Univ Posts & Telecommun Coll Flexible Elect Future Technol Nanjing 210023 Peoples R China

Efficient and precise colorectal polyp segmentation has significant implications for screening colorectal polyps. Although network variants derived from the Transformer network have high accuracy in segmenting colorectal polyps with complex shapes, they have two main shortcomings: (1) multi-level semantic information at the output of the encoder may result in information loss during the fusion process and (2) failure to adequately suppress background noise during segmentation. To address these challenges, we propose a cross-scale interaction fusion transformer for polyp segmentation (CIFFormer). Firstly, a novel feature supplement module (FSM) supplements the missing details and explores potential features to enhance the feature representations. Additionally, to mitigate the interference of background noise, we designed a cross-scale interactive fusion module (CIFM) that combines feature information between different layers to obtain more multi-scale and discriminative representative features. Furthermore, a boundary-assisted guidance module (BGM) is proposed to help the segmentation network obtain boundary-enhanced details. Extensive experiments on five typical datasets have demonstrated that CIFFormer has an obvious advantage in segmenting polyps. Specifically, CIFFormer achieved an mdice of 0.925 and an mIoU of 0.875 on the Kvasir-SEG dataset, achieving superior segmentation accuracy to competing methods.

关键词： polyp segmentation boundary-assisted guidance cross-scale interaction transformer

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Yr29 combined with ***-4BL.3 confers durable resistance to stripe rust in wheat cultivar Jing 411

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THEOrETICAL ANd APPLIEd GENETICS 2024年第11期137卷 252页

作者： Xiang, Mingjie Tian, Bo Cao, Jianghao Liu, Shengjie Zhou, Caie Wang, Xiaoting Zhang, Yibo Li, Jiale Yuan, Xunying Wan, Jufen Yu, rui Zheng, Weijun Wu, Jianhui Zeng, Qingdong Kang, Zhensheng Li, Chunlian Cui, Fa Han, dejun Northwest A&F Univ Coll Agron State Key Lab Crop Stress Resistance & High Effici Yangling 712100 Shaanxi Peoples R China Northwest A&F Univ State Key Lab Crop Stress Resistance & High Effici Yangling 712100 Shaanxi Peoples R China Ludong Univ Univ Shandong Coll Agr Key Lab Mol Module Based Breeding High Yield & Abi Yantai 264025 Shandong Peoples R China

Wheat stripe rust or yellow rust (Yr), caused by Puccinia striiformis f. sp. tritici (Pst), causes substantial yield reductions globally, but losses can be minimized by using resistance genes. Chinese wheat cultivar Jing 411 (J411) has continued to display an acceptable level of adult-plant resistance (APr) to Yr in varied field conditions since its release in the 1990s. A recombinant inbred line (rIL) population comprising 187 lines developed from a cross of J411 and Kenong 9204 (KN9204) was evaluated in multiple environments to identify genomic regions carrying genes for Yr resistance. A total of five quantitative trait loci (QTL) on chromosome arm 1BL, 3BS, 4BL, 6BS, and 7BL from J411 and two QTL on 3dS and 7dL from KN9204 were detected using inclusive composite interval mapping with the wheat 660 K SNP array. ***-1BL.5 and ***-4BL.3 from J411 were robust and showed similar effects in all environments. ***-1BL.5 was likely the pleiotropic gene of Yr29/Lr46. ***-4BL.3 was located within a 1.0 cM interval delimited by KASP markers AX-111609222 and AX-89755491. Based on haplotype analysis, Yr29 and ***-4BL.3 were identified as genetic components of quantitative resistance in a number of wheat cultivars. Moreover, rILs with Yr29 and ***-4BL.3 individually or when combined showed higher resistance to Yr in rust nurseries compared with rILs without them, and there was no negative effect of their presence on agronomic traits under rust-free conditions. These results suggest that effective polymerization strategy is important for breeding high yielding and durable resistance cultivars.

关键词： Plants (botany)

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Network Architecture design Toward Convergence of Mobile Applications and Networks

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IEEE COMMUNICATIONS MAGAZINE 2024年第6期62卷 129-135页

作者： Han, Shuangfeng Liu, Zhiming Sun, Tao Wang, Xiaoyun China Mobile Res Inst Beijing Peoples R China China Mobile Grad Beijing Peoples R China Chair 3GPP SA2 Beijing Peoples R China China Mobiles coordinator 3GPP SA & CT Grp Beijing Peoples R China CTO China Mobile Beijing Peoples R China

Mobile communications networks are faced with gigantic challenges in meeting diversified service requirements. A tight coordination, or even convergence, of applications and mobile networks is required for the optimization of end-to-end quality of service and quality of experience (QoE). In this article, a multi-domain (e.g., application layer, transport layer, core network, radio access network, and user equipment) coordination scheme is presented, which facilitates a tight coordination between applications and networks for the current 5G networks. Toward the convergence of applications and networks, a network architecture with cross-domain coordination center (CdCC) is further proposed for 6G and beyond, which utilizes information from all the domains to optimize the end-to-end service provision. The benefits of the CdCC-enabled base station scheduling are further investigated via simulations. A new QoE-oriented fairness metric is proposed, which is capable of ensuring better fairness when different services are scheduled. Future research directions and their standardization impacts are also identified. Toward optimized end-to-end service provision, the paradigm shift from loosely coupled to converged design of applications and wireless communication networks is indispensable.

关键词： Quality of service Wireless communication resource management Quality of experience Optimization Network architecture real-time systems

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distributed Model-Free Optimal Control for Multiagent Pursuit-Evasion differential Games

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IEEE TrANSACTIONS ON NETWOrK SCIENCE ANd ENGINEErING 2024年第4期11卷 3800-3811页

作者： Zhang, Huaipin Zhao, Wei Ge, Hui Xie, Xiangpeng Yue, dong Nanjing Univ Posts & Telecommun Inst Adv Technol Carbon Neutral Nanjing 210023 Peoples R China Nanjing Univ Finance & Econ Coll Informat Engn Nanjing 210023 Peoples R China Nanjing Univ Posts & Telecommun Coll Automat Nanjing 210023 Peoples R China Nanjing Univ Posts & Telecommun Coll Artificial Intelligence Nanjing 210023 Peoples R China Nanjing Univ Posts & Telecommun Sch Internet Things Nanjing 210023 Peoples R China

This paper designs optimal control polices for networked multiagent pursuit-evasion game (MPEG) problems based on reinforcement learning (rL) technique. depending on the number of evaders, MPEG is formulated into several simpler multiple-pursuer single-evader games (MPSEGs) by a divide and conquer approach. Then we propose optimal control policies for all the agents in each MPSEG, which constitute a distributed Nash equilibrium, and provide the capturability and Nash equilibrium analysis. Finally, a data-driven rL algorithm is developed to online learn optimal control polices using measurable behavior data. A simulation example is given to verify the effectiveness of the proposed approach.

关键词： Games Transform coding differential games Nash equilibrium Topology Symmetric matrices Sensors Multiagent systems pursuit-evasion games differential graphical games reinforcement learning

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Asymptotic Properties of S-AB Method With diminishing Step-Size

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IEEE TrANSACTIONS ON AUTOMATIC CONTrOL 2024年第5期69卷 3222-3229页

作者： Zhao, Shengchao Liu, Yongchao Dalian Univ Technol Sch Math Sci Dalian 116024 Peoples R China

The popular AB /push-pull method for distributed optimization problem may unify much of the existing decentralized first-order methods based on gradient tracking technique. More recently, the stochastic gradient variant of AB /push-pull method ( S - AB ) has been proposed, which achieves the linear rate of converging to a neighborhood of the global minimizer when the step-size is constant. This article is devoted to the asymptotic properties of S - AB with diminishing step-size. Specifically, under the condition that each local objective is smooth and the global objective is strongly convex, we first present the boundedness of the iterates of S - AB and then show that the iterates converge to the global minimizer with the rate O(1/k) in the mean square sense. Furthermore, the asymptotic normality of Polyak-ruppert averaged S - AB is obtained and applications on statistical inference are discussed. Finally, numerical tests are conducted to demonstrate the theoretic results.

关键词： Convergence Optimization Covariance matrices Stochastic processes Linear programming Gaussian distribution Approximation algorithms S-AB asymptotic normality convergence rate distributed stochastic optimization (dSO)

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Graphene Nanoplatelets/Polydimethylsiloxane Flexible Strain Sensor with Improved Sandwich Structure

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SENSOrS 2024年第9期24卷 2856页

作者： Zhang, Junshu Gao, Ke Weng, Shun Zhu, Hongping Huazhong Univ Sci & Technol Sch Civil & Hydraul Engn Wuhan 430074 Peoples R China Huazhong Univ Sci & Technol Natl Ctr Technol Innovat Digital Construct Wuhan 430074 Peoples R China

In engineering measurements, metal foil strain gauges suffer from a limited range and low sensitivity, necessitating the development of flexible sensors to fill the gap. This paper presents a flexible, high-performance piezoresistive sensor using a composite consisting of graphene nanoplatelets (GNPs) and polydimethylsiloxane (PdMS). The proposed sensor demonstrated a significantly wider range (97%) and higher gauge factor (GF) (6.3), effectively addressing the shortcomings of traditional strain gauges. The microstructure of the GNPs/PdMS composite was observed using a scanning electron microscope, and the distribution of the conductive network was analyzed. The mechanical behavior of the sensor encapsulation was analyzed, leading to the determination of the mechanisms influencing encapsulation. Experiments based on a standard equal-strength beam were conducted to investigate the influence of the base and coating dimensions of the sensor. The results indicated that reducing the base thickness and increasing the coating length both contributed to the enhancement of the sensor's performance. These findings provide valuable guidance for future development and design of flexible sensors.

关键词： flexible sensor graphene nanoplatelets/polydimethylsiloxane sandwich structure strain size effect

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An effective cross-scenario remote heart rate estimation network based on global-local information and video transformer

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PHYSICAL ANd ENGINEErING SCIENCES IN MEdICINE 2024年第2期47卷 729-739页

作者： Xiang, Guoliang Yao, Song Peng, Yong deng, Hanwen Wu, Xianhui Wang, Kui Li, Yingli Wu, Fan Cent South Univ Sch Traff & Transportat Engn Key Lab Traff Safety Track Minist Educ Changsha 410075 Peoples R China

remote photoplethysmography (rPPG) technology is a non-contact physiological signal measurement method, characterized by non-invasiveness and ease of use. It has broad application potential in medical health, human factors engineering, and other fields. However, current rPPG technology is highly susceptible to variations in lighting conditions, head pose changes, and partial occlusions, posing significant challenges for its widespread application. In order to improve the accuracy of remote heart rate estimation and enhance model generalization, we propose PulseFormer, a dual-path network based on transformer. By integrating local and global information and utilizing fast and slow paths, PulseFormer effectively captures the temporal variations of key regions and spatial variations of the global area, facilitating the extraction of rPPG feature information while mitigating the impact of background noise variations. Heart rate estimation results on the popular rPPG dataset show that PulseFormer achieves state-of-the-art performance on public datasets. Additionally, we establish a dataset containing facial expressions and synchronized physiological signals in driving scenarios and test the pre-trained model from the public dataset on this collected dataset. The results indicate that PulseFormer exhibits strong generalization capabilities across different data distributions in cross-scenario settings. Therefore, this model is applicable for heart rate estimation of individuals in various scenarios.

关键词： remote photoplethysmography Video transformer dual-path network Heart rate estimation Cross-scenario testing

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