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Investigation on the penetration of jacketed rods with striking velocities of 0.9-3.3 km/s into semi-infinite targets

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Defence Technology（防务技术） 2022年第3期18卷 476-489页

作者： Kui Tang Jin-xiang Wang hai-ping song Nan Zhou National Key Laboratory of Transient Physics Nanjing University of Science and TechnologyNanjing210094China China North Vehicle Research Institute Beijing100072China Department of Criminal Science and Technology Nanjing Forest Police CollegeNanjing210023China

In this study, a combined experimental, numerical and theoretical investigation is conducted on the penetration of semi-infinite 4340 steel targets by a homogeneous 93 W rod and two types of jacketed rods with striking velocities of 0.9-3.3 km/s. The results show that the jacketed rods produced typical“co-erosion” damage at all test velocities, except for the 93 W/1060 Al jacketed rod, which switched from an early “bi-erosion” damage to later “co-erosion” damage at a striking velocity of 936 m/s. However, the homogeneous 93 W rod always forms a large mushroom head during the penetration process. The damage mechanisms of these two types of jacketed rods differ for striking velocities of 0.9-2.0 km/s, but this difference gradually decreases with increased striking velocity. For velocities of 2.0-3.3 km/s, all three types of projectiles exhibit typical hydrodynamic penetration characteristics, and the damage mechanisms of the two types of jacketed rods are almost identical. For the same initial kinetic energy, the penetration performance of the jacketed rods is distinctly superior to that of the homogeneous 93 W *** with jacket density, jacket strength shows a more significant influence on the damage mechanism and penetration performance of the jacketed rod. Finally, an existing theoretical prediction model of the penetration depth of jacketed rods on semi-infinite targets in the co-erosion mode is modified. It transpires that-in terms of penetration depth-the modified theoretical model is in good agreement with the experimental and numerical observations for 93 W/TC4 and 93 W/1060 Al jacketed rods penetrating semi-infinite 4340 steel targets.

关键词： Jacketed rod Semi-infinite target Damage mechanism Penetration performance

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Angular disturbance prediction for countermeasure launcher in active protection system of moving armored vehicle based on an ensemble learning method

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Defence Technology（防务技术） 2023年第3期21卷 207-218页

作者： Chun-ming Li Guang-hui Wang hai-ping song Xu-feng Huang Qi Zhou China North Vehicle Research Institute Beijing100072China School of Aerospace Engineering Huazhong Univerisity of Science and TechnologyWuhan430074China

The active protection system(APS),usually installed on the turret of armored vehicles,can significantly improve the vehicles’survivability on the battlefield by launching countermeasure munitions to actively intercept incoming ***,uncertainty over the launch angle of the countermeasure is increased due to angular disturbances when the off-road armored vehicle is moving over rough ***,accurate and comprehensive angular disturbance prediction is essential to the real-time monitoring of the countermeasure launch *** this paper,a deep ensemble learning(DEL)-based approach is proposed to predict the angular disturbances of the countermeasure launcher in the APS based on previous time-series *** view of the intricate temporal attribute of angular disturbance prediction,the sampling information of historical time series measured by an inertial navigation device is adopted as the input of the developed DEL ***,the recursive multi-step(RMS)prediction strategy and multi-output(MO)prediction strategy are combined with the DEL model to perform the final angular disturbance prediction for the countermeasure launcher in the APS of a moving armored *** proposed DEL model is validated by using the different datasets from real *** results reveal that this approach can be used to accurately predict angular disturbances,with the maximum absolute error of each DOF less than 0.1°.

关键词： prediction disturbance moving

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Single-image night haze removal based on color channel transfer and estimation of spatial variation in atmospheric light

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Defence Technology（防务技术） 2023年第7期25卷 134-151页

作者： Shu-yun Liu Qun Hao Yu-tong Zhang Feng Gao hai-ping song Yu-tong Jiang Ying-sheng Wang Xiao-ying Cui Kun Gao Key Laboratory of Photoelectronic Imaging Technology and System Ministry of EducationSchool of Optics and PhotonicsBeijing Institute of TechnologyBeijing100081China China North Vehicle Research Institute BeijingChina

The visible-light imaging system used in military equipment is often subjected to severe weather conditions, such as fog, haze, and smoke, under complex lighting conditions at night that significantly degrade the acquired images. Currently available image defogging methods are mostly suitable for environments with natural light in the daytime, but the clarity of images captured under complex lighting conditions and spatial changes in the presence of fog at night is not satisfactory. This study proposes an algorithm to remove night fog from single images based on an analysis of the statistical characteristics of images in scenes involving night fog. Color channel transfer is designed to compensate for the high attenuation channel of foggy images acquired at night. The distribution of transmittance is estimated by the deep convolutional network DehazeNet, and the spatial variation of atmospheric light is estimated in a point-by-point manner according to the maximum reflection prior to recover the clear image. The results of experiments show that the proposed method can compensate for the high attenuation channel of foggy images at night, remove the effect of glow from a multi-color and non-uniform ambient source of light, and improve the adaptability and visual effect of the removal of night fog from images compared with the conventional method.

关键词： Dehazing image captured at night Chromaticity fusion correction Color channel transfer Spatial change-based atmospheric light estimation DehazeNet

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Investigation on the penetration of jacketed rods with striking velocities of 0.9-3.3 km/s into semi-in finite targets

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Defence Technology 2022年第3期

作者： Kui Tang Jin-xiang Wang hai-ping song Nan Zhou

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Global trends and hotspots of type 2 diabetes in children and adolescents:A bibliometric study and visualization analysis

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World Journal of Diabetes 2025年第1期16卷 140-168页

作者： Fang-Shuo Zhang hai-Jing Li Xue Yu Yi-ping song Yan-Feng Ren Xuan-Zhu Qian Jia-Li Liu Wen-Xun Li Yi-Ran Huang Kuo Gao School of Acupuncture-Moxibustion and Tuina Beijing University of Chinese MedicineBeijing 100029China School of Traditional Chinese Medicine Beijing University of Chinese MedicineBeijing 100029China

BACKGROUND Epidemiological surveys indicate an increasing incidence of type 2 diabetes mellitus(T2DM)among children and adolescents *** to rapid disease progression,severe long-term cardiorenal complications,a lack of effective treatment strategies,and substantial socioeconomic burdens,it has become an urgent public health issue that requires management and *** T2DM differs from adult *** a significant increase in our understanding of youth-onset T2DM over the past two decades,the related review and evidence-based content remain *** To visualize the hotspots and trends in pediatric and adolescent T2DM research and to forecast their future research *** This study utilized the terms“children”,“adolescents”,and“type 2 diabetes”,retrieving relevant articles published between 1983 and 2023 from three citation databases within the Web of Science Core Collection(SCI,SSCI,ESCI).Utilizing CiteSpace and VoSviewer software,we analyze and visually represent the annual output of literature,countries involved,and participating *** allows us to predict trends in this research *** analysis encompasses co-cited authors,journal overlays,citation overlays,time-zone views,keyword analysis,and reference analysis,*** A total of 9210 articles were included,and the annual publication volume in this field showed a steady growth *** United States had the highest number of publications and the highest *** United States also had the most research institutions and the strongest research *** global hot journals were primarily diabetes professional journals but also included journals related to nutrition,endocrinology,and *** analysis showed that research related to endothelial dysfunction,exposure risk,cardiac metabolic risk,changes in gut microbiota,the impact on comorbidities and outcomes,etc.,were emerging *** have maintained their popularity in this field,sugges

关键词： Child Adolescent Type 2 diabetes mellitus Bibliometrics Knowledge mapping Visualization CiteSpace VOSviewer

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Constraints on holographic QCD phase transitions from PTA observations

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 71-78页

作者： song He Li Li Sai Wang Shao-Jiang Wang Center for Theoretical Physics and College of Physics Jilin University School of Physical Science and Technology Ningbo University Max Planck Institute for Gravitational Physics (Albert Einstein Institute) CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences (UCAS) School of Physical Sciences University of Chinese Academy of Sciences (UCAS) Theoretical Physics Division Institute of High Energy Physics Chinese Academy of Sciences

The underlying physics of QCD phase transition in the early Universe remains largely unknown due to its strong-coupling nature during the quark-gluon plasma/hadron gas transition, yet a holographic model has been proposed to quantitatively fit the lattice QCD data while with its duration of the first-order phase transition(FoPT) left undetermined. At specific baryon chemical potential, the first-order QCD phase transition agrees with the observational constraint of baryon asymmetry. It, therefore, provides a scenario for phase transition gravitational waves(GWs) within the standard model of particle physics. If these background GWs could contribute dominantly to the recently claimed common-spectrum red noise from pulsar timing array(PTA) observations, the duration of this FoPT can be well constrained, and the associated primordial black holes are still allowed by current observations.

关键词： pulsar timing array QCD phase transition gravitational waves primordial black holes

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岩溶区非闭合流域年径流估算方法探讨

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水资源保护 2005年第1期21卷 21-23页

作者：吴浩东胡建平许保海宋平贵州工业大学研究生部贵州贵阳550003 华东交通大学研究生部江西南昌330013

在分析岩溶区域特征的基础上,构建流域水量平衡方程式,计算流域之间的交换水量Δu,并结合非闭合流域的特征,提出在有资料和无资料的情况下Δu的估算方法,可应用于工程设计中。

关键词：岩溶山区非闭合流域年径流流域交换水量

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中药骨康灵联合同位素药物锝-99-亚甲基二膦酸钠治疗兔骨质疏松的实验研究

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中西医结合学报 2008年第3期6卷 298-303页

作者：赵国定高克加田英敏叶智卫李伟宋海萍蔡征宇上海市黄浦区中心医院中医内科上海200002 上海市黄浦区中心医院核医学科上海200002

目的:探讨自制煎方骨康灵联合非放射性同位素药物锝-99-亚甲基二膦酸钠(technetium[^(99)Tc]methylene diphosphonate injection,^(99)Tc-MDP)治疗骨质疏松症的优越性。方法:肌肉注射盐酸地塞米松针剂(dexamethasone,DX)制作兔骨质疏松模型,将实验兔分为8组:A、B组为正常对照组;C、D组为骨质疏松对照组;E组为^(99)Tc-MDP治疗组;F组为氨基二膦酸盐治疗组;G组为单用骨康灵治疗组;H组为^(99)Tc-MDP联合骨康灵治疗组。A、C组实验兔于实验第8周处死,以证实骨质疏松模型成立。E、F、G、H组实验兔于治疗16周后与B、D组一起处死,行病理细胞学分析、骨形态计量分析、骨密度检测、生物力学试验、X线摄片、CT摄片、核素骨骼扫描以及血清骨碱性磷酸酶(bone alkaline phospha- tase,BALP)和骨钙素(骨谷氨酸蛋白)(bone gla protein,BGP)的测定。结果:实验兔连续肌肉注射DX 8周后,A组实验兔骨小梁排列规则,呈正常骨组织形态。C组实验兔骨小梁排列稀疏,存在较明显的骨小梁断裂现象,呈骨组织破坏形态,同时A、C两组在骨密度、骨生物力学、骨形态计量等方面的差异,均有统计学意义。实验室检查结果显示,兔骨质疏松动物模型成立。实验第9周对E组、F组、G组、H组实验兔进行治疗。细胞病理切片显示,D组实验兔骨小梁明显稀疏,有断裂和缺损区或凹陷。B组骨小梁排列均匀、规则,H、E组的细胞学表现为在骨质疏松的基础上骨质和骨小梁明显得到了修复,骨小梁增粗,F组实验兔的细胞学表现则优于G组,G组又略优于D组,H、E组更明显优于D组。结论:骨康灵与具有高亲骨特异性调节骨代谢作用的同位素药物^(99)Tc-MDP联合治疗兔实验性骨质疏松的效果明显优于单独治疗。

关键词：骨质疏松 99m锝美罗酸盐治疗兔

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Inspires effective alternatives to backpropagation:predictive coding helps understand and build learning

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Neural Regeneration Research 2025年第11期20卷 3215-3216页

作者： Zhenghua Xu Miao Yu Yuhang song School of Health Sciences and Biomedical Engineering Hebei University of TechnologyTianjinChina Department of Computer Science University of OxfordOxfordUK

Artificial neural networks are capable of machine learning by simulating the hiera rchical structure of the human *** enable learning by brain and machine,it is essential to accurately identify and correct the prediction errors,referred to as credit assignment(Lillicrap et al.,2020).It is critical to develop artificial intelligence by understanding how the brain deals with credit assignment in neuroscience.

关键词： assignment learning enable

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Protein quality control systems in hypertrophic cardiomyopathy:pathogenesis and treatment potential

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Journal of Geriatric Cardiology 2022年第10期19卷 780-784页

作者： Fan-Yan LUO Yong-ping BAI hai-song BU Department of Cardiovascular Surgery Xiangya HospitalCentral South UniversityChangshaChina Department of Geriatric Medicine Xiangya HospitalCentral South UniversityChangshaChina

Hypertrophic cardiomyopathy(HCM)is genetic cardiomyopathy with the risk of sudden death characterized by abnormal sarcomere protein.^([1])Although some pathogenic genes related to HCM have been reported,^([2])the disease phenotype and pathogenesis cannot be fully elucidated,which brings great difficulties to the diagnosis and treatment of HCM,especially the exploration of HCM treatment strategies.

关键词： diagnosis treatment death

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