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COMPrompter: reconceptualized segment anything model with multiprompt network for camouflaged object detection

science china(Information sciences) 2025年第1期68卷 189-203页

作者： Xiaoqin ZHANG Zhenni YU Li ZHAO Deng-Ping FAN Guobao XIAO zhejiang province Key Laboratory of Intelligent Informatics for Safety and Emergency Wenzhou University Nankai International Advanced Research Institute (SHENZHEN FUTIAN) College of Computer science Nankai University School of Computer science and Technology Tongji University

We rethink the segment anything model(SAM) and propose a novel multiprompt network called COMPrompter for camouflaged object detection(COD). SAM has zero-shot generalization ability beyond other models and can provide an ideal framework for COD. Our network aims to enhance the single prompt strategy in SAM to a multiprompt strategy. To achieve this, we propose an edge gradient extraction module, which generates a mask containing gradient information regarding the boundaries of camouflaged objects. This gradient mask is then used as a novel boundary prompt, enhancing the segmentation process. Thereafter, we design a box-boundary mutual guidance module, which fosters more precise and comprehensive feature extraction via mutual guidance between a boundary prompt and a box prompt. This collaboration enhances the model's ability to accurately detect camouflaged objects. Moreover, we employ the discrete wavelet transform to extract high-frequency features from image embeddings. The high-frequency features serve as a supplementary component to the multiprompt ***, our COMPrompter guides the network to achieve enhanced segmentation results, thereby advancing the development of SAM in terms of COD. Experimental results across COD benchmarks demonstrate that COMPrompter achieves a cutting-edge performance, surpassing the current leading model by an average positive metric of 2.2% in COD10K. In the specific application of COD, the experimental results in polyp segmentation show that our model is superior to top-tier methods as well. The code will be made available at https://***/guobaoxiao/COMPrompter.

关键词： segment anything model camouflaged object detection boundary prompt

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Upper Bounds on the Multicolor Ramsey Numbers r_(k)(C_(4))

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Acta Mathematicae Applicatae Sinica 2025年第1期41卷 286-294页

作者： Tian-yu LI Qi-zhong LIN Center for Discrete Mathematics Fuzhou UniversityFuzhou 350108China

The multicolor Ramsey number r_(k)(C_(4))is the smallest integer N such that any k-edge coloring of KN contains a monochromatic C_(4).The current best upper bound of r_(k)(C_(4))was obtained by Chung(1974)and independently by Irving(1974),i.e.,r_(k)(C_(4))≤k^(2)+k+1 for all k≥*** is no progress on the upper bound since *** this paper,we improve the upper bound of r_(k)(C_(4))by showing that r_(k)(C_(4))≤k^(2)+k-1 for even k≥*** improvement is based on the upper bound of the Turan number ex(n,C4),in which we mainly use the double counting method and many novel ideas from Firke,Kosek,Nash,and Williford[***,Ser.B 103(2013),327-336].

关键词： Multicolor Ramsey number Turan number 4-cycle

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Comparative Investigation of the Migration Behavior of Two Stearate Acid Scavengers from Ziegler-Natta Polypropylene into Water during Autoclaving Treatment

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高分子科学（英文版） 2025年第1期43卷 90-100页

作者： Xin-Rao Zhang Fu-Shan Wang Xin Wang Yan Gao Hong-Xing Zhang Zhi-Qin Liu Jia-Chun Feng State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai 200433China Lanzhou Petrochemical Corporation of Petrochina Lanzhou 730060China

Although Ziegler-Natta(Z-N)polyolefins have been widely used as raw materials to produce pharmaceutical or food packaging,the migration of acid scavengers,an additive usually introduced in Z-N polyolefins,from the packaging to its contents has not been *** this work,the migration of the two most used acid scavengers,calcium stearate(CaSt2)and zinc stearate(ZnSt2),from a Z-N polypropylene random copolymer(PPR)into water during autoclaving at 121 ℃ were comparatively *** was found that,for PPR plates containing 0.1 wt％CaSt2 or ZnSt2(PPR-0.1CaSt2,PPR-0.1ZnSt2,respectively),the concentration of migrated calcium ion into water increased with autoclaving time,while that of zinc ion was much lower at same treatment durations and did not show a significant increase with treatment ***,af-ter removing all plates and acidification treatment,a considerable amount of stearic acid was detected in sterilized water for PPR-0.1 ZnSt2,but no such significant stearic acid was detected in sterilized water for PPR-0.1 *** on the structural evolution of the two soaps upon heating,possible mechanisms for the different migration behavior of CaSt2 and ZnSt2 from PPR into water during autoclaving treatment were *** results suggest that the migration issue of acid scavengers is worthy of attention in pharmaceutical packaging materials produced from Z-N polyolefins.

关键词： Zinc stearate Calcium stearate Ziegler-Natta polyolefin Autoclaving treatment Migration

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Predefined-Time Constrained Optimization of Multi-Agent Systems Under Impulsive Effects

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IEEE/CAA Journal of Automatica Sinica 2025年第1期12卷 255-257页

作者： Zhuyan Jiang Xiaoyang Liu Xiang Jiang Jinde Cao the School of Computer science and Technology Jiangsu Normal University IEEE the School of Mathematics Southeast University

Dear Editor,This letter investigates predefined-time optimization problems(OPs) of multi-agent systems(MASs), where the agent of MASs is subject to inequality constraints, and the team objective function accounts for impulse effects. Firstly, to address the inequality constraints,the penalty method is introduced. Then, a novel optimization strategy is developed, which only requires that the team objective function be strongly convex.

关键词： Constrained optimization

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Design of a cationic accelerator enabling ultrafast ion diffusion kinetics in aqueous zinc-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 377-384页

作者： Yawei Xiao Qianqian Gu Haoyu Li Mengyao Li Yude Wang National Center for International Research on Photoelectric and Energy Materials School of Materials and EnergyYunnan UniversityKunming 6500504YunnanChina Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources School of Chemistry and Chemical EngineeringHainan UniversityHaikou 570228HainanChina College of Chemical Engineering Fuzhou UniversityFuzhou 350108FujianChina Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon Technologies Yunnan UniversityKunming 6500504YunnanChina

Aqueous zincion batteries are highly favored for grid-level energy storage owing to their low cost and high safety,but their practical application is limited by slow ion *** address this,a strategy has been developed to create a cation-accelerating electric field on the surface of the cathode to achieve ultrafast Zn^(2+)diffusion *** employing electrodeposition to coat MoS_(2)on the surface of BaV_(6)O_(16)·3H_(2)O nanowires,the directional builtin electric field generated at the heterointerface acts as a cation accelerator,continuously accelerating Zn^(2+)diffusion into the active *** optimized Zn^(2+)diffusion coefficient in CC@BaV-V_(6)O_(16)·3H_(2)@MoS_(2)(7.5×10^(8)cm^(2)s^(-1)) surpasses that of most reported V-based ***,MoS_(2)serving as a cathodic armor extends the cycling life of the Zn-CC@BaV_(6)O_(16)·3H_(2)@MoS_(2)full batteries to over 10000 *** work provides valuable insights into optimizing ion diffusion kinetics for high-performance energy storage devices.

关键词： Internal electric field Cationic accelerator lon diffusion kinetics Cathode modification strategy Aqueous zinc ion battery

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Effect of Parameter Variation in the BMJ Scheme on the Simulation of MJO Propagation and Structure

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Advances in Atmospheric sciences 2025年第2期42卷 397-409页

作者： Xiaoyu ZHU Zhong ZHONG Yimin ZHU Yunying LI Yijia HU Yao HA College of Meteorology and Oceanography National University of Defense TechnologyChangsha 410073China Key Laboratory for Virtual Geographic Environment School of Geography ScienceNanjing Normal UniversityNanjing 210023China Jiangsu Collaborative Innovation Center for Climate Change School of Atmospheric SciencesNanjing UniversityNanjing 210023China

In this study,the Betts-Miller-Janjic(BMJ)convective adjustment scheme in the Weather Research and Forecasting(WRF)model version 4.0 was used to investigate the effect of itsα-parameter,which influences the first-guess potential temperature reference profile on the Madden-Julian oscillation(MJO)propagation and *** study diagnosed the MJO active phase composites of the MJO-filtered outgoing longwave radiation(OLR)during the December-to-February(DJF)period of 2006-2016 over the Indian Ocean(IO),Maritime Continent(MC),and western Pacific(WP).The results show that the MJO-filtered OLR intensity,propagation pattern,and MJO classification(standing,jumping,and propagating clusters)are sensitive to theα-value,but the phase speeds of propagating MJOs are ***,with an increasingα-value,the simulated MJO-filtered OLR intensity increases,and the simulated propagation pattern is *** also show that the intensity and propagation pattern of an eastward-propagating MJO are associated with MJO circulation structures and thermodynamic ***αincreases,the front Walker cell and the low-level easterly anomaly are enhanced,which premoistens the lower troposphere and triggers more active shallow and congestus *** enhanced shallow and congestus convection preconditions the lower to middle troposphere,accelerating the transition from congestus to deep convection,thereby facilitating eastward propagation of the ***,the simulated MJO tends to transfer from standing to eastward propagating asα*** summary,increasing theα-value is a possible way to improve the simulation of the structure and propagation of the MJO.

关键词： MJO WRF model BMJ scheme low-level easterly anomaly

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Corrosion resistance and antibacterial properties of Ti−3Cu alloy prepared by selective laser melting

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Transactions of Nonferrous Metals Society of china 2025年第1期35卷 143-156页

作者： Meng-zhen ZHU Jing-lei MIAO Xiong-wen ZHOU Er-lin ZHANG Zhi-lin LIU Hai-lin YANG State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China The Third Xiangya Hospital Central South UniversityChangsha 410013China Department of Prosthodontics Centre of StomatologyXiangya HospitalCentral South UniversityChangsha 410008China Key Laboratory for Anisotropy and Texture of Materials Ministry of EducationSchool of Materials Science and EngineeringNortheastern UniversityShenyang 110819China Light Alloy Research Institute College of Mechanical and Electrical EngineeringCentral South UniversityChangsha 410083China

The corrosion resistance and antibacterial properties of Ti−3Cu alloy prepared by selective laser melting were evaluated using electrochemical experiments and a variety of antibacterial *** is found that the charge transfer resistance of Ti−3Cu alloy was 4.89×10^(5)Ω∙cm^(2),which was doubled the data obtained by CP-Ti *** antibacterial rates of Ti−3Cu alloy against *** and *** were 45.0%and 54.5%.And the antibacterial rates increased with the prolongation of cultivation time,reaching up to 62.8%and 68.6%,*** in-situ nano Ti_(2)Cu precipitates were homogeneously distributed in the matrix of the Ti−3Cu alloy,which was the key reason of increasing the corrosion ***,the microscale electric fields between theα-Ti matrix and the Ti_(2)Cu was responsible for the enhancement of the antibacterial properties.

关键词： selective laser melting Ti−3Cu alloy microstructure corrosion resistance antibacterial properties

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Guidance and Control of Underwater Hexapod Robot Based on Adaptive Sliding Mode Strategy

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JOURNAL OF BIONIC ENGINEERING 2025年第1期22卷 118-132页

作者： Gong, Qingshuo Zhang, Wei Su, Yu Yang, Haoyu Harbin Engn Univ Coll Intelligent Syst Sci & Engn Harbin 150001 Peoples R China

Animals exhibit remarkable mobility and adaptability to their environments. Leveraging these advantages, various types of robots have been developed. To achieve path tracking control for the underwater hexapod robot, a path tracking control system has been designed. Within this system, a Line-of-Sight (LOS) guidance system is utilized to generate the desired heading angle during the path tracking process. A heading tracking controller and a speed tracking controller are designed based on the super-twisting sliding mode method. Fuzzy logic is employed to establish the nonlinear relationship between the output of the upper-level controller, which includes force/torque, and the input parameters of the Central Pattern Generator (CPG) network. Finally, the effectiveness of the proposed method is verified through simulation and experimentation. The results demonstrate that the robot exhibits good tracking accuracy, as well as stability and coordination in motion. The designed path tracking system enables the underwater hexapod robot to rapidly and accurately track the desired path.

关键词： Underwater hexapod robot Path tracking Sliding mode control

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Identification of ferroptosis/ autophagy-related genes and potential underlying mechanisms involved in the effect of BMSC senescence on the osteogenic differentiation of aging BMSCs

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GENES & DISEASES 2025年第1期12卷 101259页

作者： Chen, Kai Tao, Huaqiang Xiao, Haixiang Chu, Miao Zhu, Pengfei Lv, Shujun Huang, Lixin Geng, Dechun Haian Peoples Hosp Dept Orthoped Haian 226600 Jiangsu Peoples R China Soochow Univ Dept Orthoped Affiliated Hosp 1 Suzhou 215000 Jiangsu Peoples R China Soochow Univ Dept Orthopaed Dushu Lake Hosp Suzhou 215000 Jiangsu Peoples R China Yixing Peoples Hosp Dept Orthopaed Yixing 214200 Jiangsu Peoples R China

Bone mesenchymal stem cells(BMSCs)are stem cells located in the bone marrow matrix that have a variety of differentiation potentials and biological *** play an important role in bone regenerative *** senescence of BMsCs might cause accelerated degeneration of bone *** is a process in which cellular homeostasis is maintained by autophagosomes and *** could control the function and senescence of BMSCs during bone aging and might be a therapeutic target for treating diseases during aging.1 Ferroptosis is a regulated cell death process.2 The inhibition of ferroptosis in mesenchymal stem cells could reduce cell injury and might have great therapeutic value.3-5.

关键词： degeneration homeostasis aging

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Engineering atomic Rb-N configurations to tune radical pathways for highly selective photocatalytic H_(2)O_(2) synthesis coupled with biomass valorization

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Journal of Energy Chemistry 2025年第1期100卷 215-225页

作者： Jiaye Li Shuang Pan Yihuang Chen Qiong Liu College of Chemistry and Materials Engineering Wenzhou UniversityWenzhou 325035ZhejiangChina Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology(china) Institute of AnalysisGuangdong Academy of Sciences(China National Analytical CenterGuangzhou)Guangzhou 510070GuangdongChina

Photocatalytic oxygen reduction for hydrogen peroxide(H_(2)O_(2))synthesis presents a green and costeffective production ***,achieving highly selective H_(2)O_(2)synthesis remains challenging,necessitating precise control over free radical reaction pathways and minimizing undesirable oxidative ***,we report for the visible light-driven simultaneous co-photocatalytic reduction of O2to H_(2)O_(2)and oxidation of biomass using the atomic rubidium-nitride modified carbon nitride(CNRb).The optimized CNRb catalyst demonstrates a record photoreduction rate of 8.01 mM h^(-1)for H_(2)O_(2)generation and photooxidation rate of 3.75 mM h^(-1)for furfuryl alcohol to furoic acid,achieving a remarkable solar-to-chemical conversion(SCC)efficiency of up to 2.27%.Experimental characterizations and DFT calculation disclosed that the introducing atomic Rb–N configurations allows for the high-selective generation of superoxide radicals while suppressing hydroxyl free radical *** is because the Rb–N serves as the new alternative site to perceive a stronger connection position for O2adsorption and reinforce the capability to extract protons,thereby triggering a high selective redox product *** study holds great potential in precisely regulating reactive radical processes at the atomic level,thereby paving the way for efficient synthesis of H_(2)O_(2)coupled with biomass valorization.

关键词： Atomic economy Radical pathway regulation Photocatalytic H_(2)O_(2)synthesis Rubidium atom coordination Biomass valorization

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