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地面数字电视台站播控系统的设计与实现

广播与电视技术 2024年第7期51卷 79-83页

作者：万茵丁永贤湖北省广播电视局无线台管理中心湖北430071

为提升地面数字电视台站播控系统的自动化、稳定性及可维护性,本文提出了一套高效且可靠的地面数字电视播控系统。该系统不仅实现了开机自启动功能,确保台站能够迅速进入工作状态;在应用程序发生崩溃时,系统能够迅速进行恢复,有效避免... 详细信息

为提升地面数字电视台站播控系统的自动化、稳定性及可维护性,本文提出了一套高效且可靠的地面数字电视播控系统。该系统不仅实现了开机自启动功能,确保台站能够迅速进入工作状态;在应用程序发生崩溃时,系统能够迅速进行恢复,有效避免了播出中断的风险,此外还具备台站软件远程更新的能力,使得系统维护变得更加便捷与高效。该系统将显著提升地面数字电视发射台站的智能化水平。

关键词：开机自启动应用程序崩溃快速恢复远程更新

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Science Letters:A minimax optimal control strategy for uncertain quasi-Hamiltonian systems

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第7期9卷 950-954页

作者： Yong wan Zu-guang yin Wei-qiu ZHU Department of Mechanics State Key Laboratory of Fluid Power Transmission and Control Zhejiang University Hangzhou 310027 China

A minimax optimal control strategy for quasi-Hamiltonian systems with bounded parametric and/or external disturbances is proposed based on the stochastic averaging method and stochastic differential game. To conduct the system energy control, the partially averaged Ito stochastic differential equations for the energy processes are first derived by using the stochastic averaging method for quasi-Hamiltonian systems. Combining the above equations with an appropriate performance index, the proposed strategy is searching for an optimal worst-case controller by solving a stochastic differential game problem. The worst-case disturbances and the optimal controls are obtained by solving a Hamilton-Jacobi-Isaacs （HJI） equation. Numerical results for a controlled and stochastically excited DulTlng oscillator with uncertain disturbances exhibit the efficacy of the proposed control strategy.

关键词： Nonlinear quasi-Hamiltonian system Minimax optimal control Stochastic excitation Uncertain disturbance Stochastic averaging Stochastic differential game

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基于特征加权的KNN模型岩性识别方法

物探与化探 2024年第2期48卷 428-436页

作者：郭雨姗王万银长安大学地质工程与测绘学院陕西西安710054 中国科学院海洋地质与环境重点实验室山东青岛266071 海洋油气勘探国家工程研究中心北京100028

岩性识别是一项重要的地质工作,为固体矿产勘探与油气勘探奠定了坚实的地质基础。岩石物性是连接岩性和地球物理场的桥梁,可以通过物性之间的差异进行岩性识别,但不同岩石的物性数据往往存在一定重合,仅靠交会图无法准确地识别岩性。KN... 详细信息

岩性识别是一项重要的地质工作,为固体矿产勘探与油气勘探奠定了坚实的地质基础。岩石物性是连接岩性和地球物理场的桥梁,可以通过物性之间的差异进行岩性识别,但不同岩石的物性数据往往存在一定重合,仅靠交会图无法准确地识别岩性。KNN(K近邻)模型是一种简单、直接的机器学习方法,准确度和灵敏度都很高,适用于多分类问题。基于此,本文将基于特征加权的KNN模型引入岩性识别中,该方法将传统KNN模型与属性特征的信息增益相结合,对不同特征赋予不同权重,可以直观地反映属性特征对分类的重要程度。实验证明,相比于传统KNN方法,基于特征加权的KNN模型对岩性交界处的识别能力有大幅提升,整体提高了岩性识别的准确性和稳定性。

关键词： KNN 岩性识别信息增益特征权重

Shaped-Beam Pattern Synthesis Through the Construction of Weighted Generalized Rayleigh Quotient

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Chinese Journal of Electronics 2019年第1期28卷 207-214页

作者： YANG yin wan Chuan SHENG Weixing HAN Yubing MA Xiaofeng School of Electronic and Optical Engineering Nanjing University of Science and Technology

A novel shaped-beam pattern synthesis method of generating an arbitrary footprint pattern under an arbitrary array structure is proposed. The embedded element pattern information is included in the pattern model, and a new cost function composed of three optimization items which are sidelobe levels,mainlobe ripples and mainlobe gains is constructed through the model. During the optimization process,to further enhance the performance of the synthesized pattern, a weight matrix is designed and added to the optimization items, then the generalized Rayleigh quotient approximation method is used to obtain the final array element excitations. To illustrate the good performance of the provided method, several synthesis examples with different arrays and footprints are presented. Compared with other algorithms such as Weighted alternating reverse projection(WARP) method, the proposed method can achieve better results with lower sidelobe levels, smaller mainlobe ripples and less computational load.

关键词： Pattern synthesis Embedded element pattern Mutual coupling Generalized Rayleigh quotient approximation Arbitrary footprint

In vitro fluorescence displacement investigation of thyroxine transport disruption by bisphenol A

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Journal of Environmental Sciences 2011年第2期23卷 315-321页

作者： Jie Cao Liang-hong Guo Bin wan yin Wei State Key Laboratory of Environmental Chemistry and Ecoloxicology Research Center for Eco-environmental Sciences Chinese Academy of Sciences Beijing 100085 China

Bisphenol A （BPA） is a chemical with high production volume and wide applications in many industries. Although BPA is known as an endocrine disruptor, its toxic mechanisms have not been fully characterized. Due to its structural similarity to thyroid hormones thyroxine （T4） and triiodothyronine （T3）, one possible mechanism of BPA toxicity is disruption of hormone transport by competitive binding with the transport proteins. In this study, the binding interactions of BPA, T4, and T3 with three thyroid hormone transport proteins, human serum albumin （HSA）, transthyretin （TTR）, and thyroxine-binding globulin （TBG） were investigated by fluorescence measurement. Using two site-specific fluorescence probes dansylamide and dansyl-L-proline, the binding constants of BPA with HSA at drug site I and site II were determined as 2.90 × 10^4 and 3.14 × 10^4 L/mol, respectively. By monitoring the intrinsic fluorescence of tryptophan, a binding constant of 4.70 ×10^3 L/mol was obtained. Similarly, by employing 8-anilino-l-naphthalenesulfonic acid as fluorescence probe, the binding affinity of BPA with TTR and TBG was measured to be 3.10 × 10^5 and 5.90× 10^5 L/mol, respectively. In general, BPA showed lower binding affinity with the proteins than T3 did, and even lower affinity than T4. Using these binding constants, the amount of BPA which would bind to the transport proteins in human plasma was estimated. These results suggest that the concentrations of BPA commonly found in human plasma are probably not high enough to interfere with T4 transport.

关键词： bisphenol A human serum albumin human transthyretin human thyroxine-binding globulin fluorescence displacement method

黄芪总皂苷调控Wnt3a/β-catenin/EMT通路抑制结肠癌肝转移的作用机制

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中华中医药杂志 2024年第4期39卷 1763-1768页

作者：王旭万林鹭殷启航孙若岚顾俊菲唐德才南京中医药大学中医学院南京210023 江苏省方剂研究重点实验室南京210023

目的:观察黄芪总皂苷对小鼠结肠癌肝转移的抑制作用,并探讨其通过调节Wnt3a/β-catenin/EMT通路发挥抑制作用的相关机制。方法:用***细胞构建结肠癌原位移植瘤小鼠模型,将50只BA L B/c小鼠随机分为假手术组、模型组、阳性对照组、黄芪... 详细信息

目的:观察黄芪总皂苷对小鼠结肠癌肝转移的抑制作用,并探讨其通过调节Wnt3a/β-catenin/EMT通路发挥抑制作用的相关机制。方法:用***细胞构建结肠癌原位移植瘤小鼠模型,将50只BA L B/c小鼠随机分为假手术组、模型组、阳性对照组、黄芪总皂苷低剂量组(50 m g·k g^(-1)·d^(-1))、黄芪总皂苷高剂量组(100 mg·kg^(-1)·d^(-1)),每组10只。取各组小鼠肝脏组织,观察结肠肿瘤肝转移情况,采用HE染色观察肝组织病理形态学变化,Western Blot检测Wnt3a/β-catenin/EMT相关蛋白的表达,免疫荧光染色检测β-catenin蛋白在肝组织中的表达情况。结果:模型组小鼠肝脏出现明显转移结节,且病理变化较明显,尤其出现较多肿瘤细胞浸润情况。与模型组比较,黄芪总皂苷高剂量组及阳性对照组小鼠肝组织转移灶数量明显减少,肝脏病理得到明显改善,肿瘤细胞浸润明显减少,肝组织中Wnt3a、β-catenin、N-cadherin、Vimentin蛋白表达量显著降低(P<0.05,P<0.01),GSK3β和E-cadherin蛋白表达量显著升高(P<0.05)。结论:黄芪总皂苷可能通过调控肝组织中Wnt3a/β-catenin/EMT信号通路发挥抑制结肠癌原位移植瘤小鼠肝转移的作用。

关键词：黄芪总皂苷结肠癌肝转移 Wnt3a/β-catenin 上皮-间充质转化

Silicon-based nanomaterials for lithium-ion batteries

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Chinese Science Bulletin 2012年第32期57卷 4104-4110页

作者： yin YaXia wan LiJun GUO YuGuo CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Institute of ChemistryChinese Academy of SciencesBeijing 100190China

Silicon-based nanomaterials have been of scientific and commercial interest in lithium-ion batteries due to the low cost,low toxicity,and high specific capacity with an order of magnitude beyond that of conventional *** poor capacity retention,caused by pulverization of Si during cycling,triggers researchers and engineers to explore better battery *** review summarizes recent work in improving Si-based anode materials via different approaches from diverse Si nanostructures,Si/metal nanocomposites,to Si/C nanocomposites,and also offers perspectives of the Si-based anode materials.

关键词：硅基纳米材料锂离子电池纳米复合材料硅纳米结构 Si基商业利益循环过程研究人员

Epidemiological and clinical features,treatment status,and economic burden of traumatic spinal cord injury in China:a hospital-based retrospective study

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Neural Regeneration Research 2024年第5期19卷 1126-1132页

作者： Hengxing Zhou Yongfu Lou Lingxiao Chen Yi Kang Lu Liu Zhiwei Cai David BAnderson Wei wang Chi Zhang Jinghua wang Guangzhi Ning Yanzheng Gao Baorong He Wenyuan Ding Yisheng wang Wei Mei Yueming Song Yue Zhou Maosheng Xia Huan wang Jie Zhao Guoyong yin Tao Zhang Feng Jing Rusen Zhu Bin Meng Li Duan Zhongmin Zhang Desheng Wu Zhengdong Cai Lin Huang Zhanhai yin Kainan Li Shibao Lu Shiqing Feng Department of Orthopedics The Second HospitalCheeloo College of MedicineShandong UniversityShandongChina Department of Orthopedics Shandong University Center for OrthopedicsQilu HospitalCheeloo College of MedicineShandong UniversityShandongChina Department of Orthopedics Tianjin Medical University General HospitalInternational Science and Technology Cooperation Base of Spinal Cord InjuryTianjin Key Laboratory of Spine and Spinal CordTianjinChina Faculty of Medicine and Health The Back Pain Research TeamSydney Musculoskeletal HealthThe Kolling InstituteUniversity of SydneySydneyNSWAustralia Department of Spine Surgery Honghui HospitalXi’an Jiaotong UniversityXi’anShaanxi ProvinceChina Department of Burns and Plastic Surgery The Fourth Medical Center of Chinese PLA General HospitalBeijingChina Faculty of Medicine and Health School of Health SciencesUniversity of SydneyNSWAustralia Sydney Spine Institute BurwoodSydneyNSWAustralia Laboratory of Epidemiology Tianjin Neurological InstituteDepartment of NeurologyTianjin Medical University General Hospital&Tianjin Neurological InstituteKey Laboratory of Post-Neuroinjury Neuro-repair and Regeneration in Central Nervous SystemMinistry of Education and Tianjin CityTianjinChina Department of Orthopedics Henan Provincial People’s HospitalZhengzhouHenan ProvinceChina Department of Spinal Surgery The Third Hospital of Hebei Medical UniversityShijiazhuangHebei ProvinceChina Department of Orthopedics The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan ProvinceChina Department of Spine Surgery Zhengzhou Orthopedics HospitalZhengzhouHenan ProvinceChina Department of Orthopedic Surgery and Orthopedic Research Institute West China HospitalSichuan UniversityChengduSichuan ProvinceChina Department of Orthopedics Xinqiao HospitalArmy Medical UniversityChongqingChina Department of Orthopedics The First Affiliated Hospital of China Medical UniversityShenyangLiaoning ProvinceChina Department of Spinal Surgery Shengj

Traumatic spinal cord injury is potentially catastrophic and can lead to permanent disability or even *** has the largest population of patients with traumatic spinal cord *** studies of traumatic spinal cord injury in China have mostly been regional in scope;national-level studies have been *** the best of our knowledge,no national-level study of treatment status and economic burden has been *** retrospective study aimed to examine the epidemiological and clinical features,treatment status,and economic burden of traumatic spinal cord injury in China at the national *** included 13,465 traumatic spinal cord injury patients who were injured between January 2013 and December 2018 and treated in 30 hospitals in 11 provinces/municipalities representing all geographical divisions of *** epidemiological and clinical features,treatment status,and total and daily costs were *** in the percentage of traumatic spinal cord injuries among all hospitalized patients and among patients hospitalized in the orthopedic department and cost of care were assessed by annual percentage change using the Joinpoint Regression *** percentage of traumatic spinal cord injuries among all hospitalized patients and among patients hospitalized in the orthopedic department did not significantly change overall(annual percentage change,-0.5%and 2.1%,respectively).A total of 10,053(74.7%)patients underwent *** 2.8%of patients who underwent surgery did so within 24 hours of injury.A total of 2005(14.9%)patients were treated with high-dose(≥500 mg)methylprednisolone sodium succinate/methylprednisolone(MPSS/MP);615(4.6%)received it within 8 *** total cost for acute traumatic spinal cord injury decreased over the study period(-4.7%),while daily cost did not significantly change(1.0%increase).Our findings indicate that public health initiatives should aim at improving hospitals’ability to complete early surgery within 24 ho

关键词： China clinical features costs epidemiology methylprednisolone sodium succinate methylprednisolone retrospective study traumatic spinal cord injury treatment

Features and dynamic mechanisms of Cenozoic tectonic migration and its impact on the hydrocarbon accumulation in the northern South China Sea

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Acta Oceanologica Sinica 2015年第1期34卷 100-109页

作者： yin Zhengxin CAI Zhourong wan Zhifeng LYU Baofeng School of Marine Sciences Sun Yat-sen University Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering Key Laboratory of Offshore Oil Exploration and Development of Guangdong Higher Education Institutes

The northern continental margin of the South China Sea （SCS） is located within the tectonic system of Southeast Asia, an area with a great deal of tectonic migration due to the regional tectonic movements. The available geological and geophysical data of the area are comprehensively analyzed in order to demonstrate the typical migration patterns of the Cenozoic tectonics in the northern SCS caused by the episodes of the Cenozoic tectonic movement. Furthermore, the lateral variation characteristics of the strata and the differ- ent evolution patterns of the main basins＇ features are assessed. It primarily focus on：（1） the Cenozoic epi- sodic rifting from north to south in the continental margin of the northern SCS; （2） the rifting and depression time of the main basins progressively become younger as one goes from north to south, signifying that the migration of both the tectonics and the sediments within the northern SCS travelled from north to south during the Cenozoic; and （3） the lateral tectonic migration on the direction of EW is not regular in total, but in some local areas the trending of the tectonic migration is from west to east. The analysis of the tectonic migration features of the northern SCS, in combination with the regional tectonic evolution background, indicates that the observed remote lagging effect, resulted from the India-Eurasia plate collision, is the main dynamic mechanism involved in the tectonic migration within the northern SCS. The tectonic migration has significant influence on both the organization of petroleum deposits and on the hydrocarbon accumulation within the basins in the northern SCS; comprehensive understanding of this dynamic system is of great reference value in predicting the hydrocarbon accumulation and has the potential to have an enormous impact in discovering new deep reservoirs for the future oil-gas exploration.

关键词： tectonic migration Cenozoic hydrocarbon accumulation northern South China Sea