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Path Tracking Control For a Four Wheel Differentially Steered Vision Robot

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Path Tracking Control For a Four Wheel Differentially Steere...

Nomogram for prediction of fatal outcome in patients with severe COVID-19:a multicenter study

第11届国际电机与系统学术会议

作者： fu juan Wang Bin Zhang China Agricultural University Beijing 100083 China

＜正＞A robotic platform for spraying in fields was used to demonstrate control problem for autonomous vehicle in *** approach presented here is a simple and effective solution for the path tracking problem of a 4-Wheel Differentially Steered（4WDS） vision mobile robot using a fuzzy-PID controller. The proposed control strategy uses a simple method to avoid motion interference among the four *** synthesis procedure is simple and allows the fuzzy controller and PID controller to switch freely according to a switch *** of the platform is provided through a platform computer（PC 104 system）.Experiment results demonstrate that this controller can ensure the robot to turn at small radius and adjust its speed as turning automatically.

关键词： Path tracking fuzzy-PID control Vision robot 4WDS

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Military Medical Research 2021年第4期8卷 535-545页

作者： Yun Yang Xiao-Fei Zhu Jian Huang Cui Chen Yang Zheng Wei He Ling-Hao Zhao Qian Gao Xuan-Xuan Huang Li-juan fu Yu Zhang Yan-Qin Chang Huo-Jun Zhang Zhi-Jie Lu The Third Affiliated Hospital of Second Military Medical University Shanghai 200438China. The Guanggu Branch of the Women and Children’s Hospital of Hubei Province Wuhan 430070China. The First Affiliated Hospital of Second Military Medical University Shanghai 200438China. 4904 Hospital of PLA Joint Logistic Support Force Wuxi 215000JiangsuChina. Tongji Taikang Hospital Wuhan 430050China. 6924 Hospital of PLA Joint Logistic Support Force Guilin 541002GuangxiChina. Huoshen Mountain Hospital Wuhan 430113China.

Background:To develop an effective model of predicting fatal outcomes in the severe coronavirus disease 2019(COVID-19)***:Between February 20,2020 and April 4,2020,consecutive confirmed 2541 COVID-19 patients from three designated hospitals were enrolled in this *** patients received chest computed tomography(CT)and serological examinations at *** tests included routine blood tests,liver function,renal function,coagulation profile,C-reactive protein(CRP),procalcitonin(PCT),interleukin-6(IL-6),and arterial blood *** SaO2 was measured using pulse oxygen saturation in room air at resting *** high-risk factors associated with death were analyzed using Cox proportional hazard model.A prognostic nomogram was constructed to predict the survival of severe COVID-19 ***:There were 124 severe patients in the training cohort,and there were 71 and 76 severe patients in the two independent validation cohorts,*** Cox analysis indicated that age≥70 years(HR=1.184,95%CI 1.061–1.321),panting(breathing rate≥30/min)(HR=3.300,95%CI 2.509–6.286),lymphocyte count10pg/ml(HR=3.029,95%CI 1.567–7.116)were independent high-risk factors associated with fatal *** developed the nomogram for identifying survival of severe COVID-19 patients in the training cohort(AUC=0.900,95%CI 0.841–0.960,sensitivity 95.5%,specificity 77.5%);in validation cohort 1(AUC=0.811,95%CI 0.763–0.961,sensitivity 77.3%,specificity 73.5%);in validation cohort 2(AUC=0.862,95%CI 0.698–0.924,sensitivity 92.9%,specificity 64.5%).The calibration curve for probability of death indicated a good consistence between prediction by the nomogram and the actual *** prognosis of severe COVID-19 patients with high levels of IL-6 receiving tocilizumab were better than that of those patients without tocilizumab both in the training and validation cohorts,but without diffe

关键词： Severe COVID-19 Nomogram Prediction Survival

白介素-33在急性呼吸窘迫综合征中的研究进展

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重庆医科大学学报 2016年第4期41卷 425-428页

作者：付娟徐昉重庆医科大学附属第一医院急诊医学科和重症医学科重庆400016

急性呼吸窘迫综合征（acute respiratory distress syndrome,ARDS）是以顽固性低氧血症和进行性呼吸困难为主要临床特点的综合征,是危重症患者死亡的主要原因之一。尽管,近年来医疗技术的迅猛发展和新的药物的应用使ARDS的预后有所改善... 详细信息

急性呼吸窘迫综合征（acute respiratory distress syndrome,ARDS）是以顽固性低氧血症和进行性呼吸困难为主要临床特点的综合征,是危重症患者死亡的主要原因之一。尽管,近年来医疗技术的迅猛发展和新的药物的应用使ARDS的预后有所改善,但其病死率仍高达40%~50%。因此,更充分的了解ARDS的发病机制,实现早期诊断,为临床上ARDS的防治提供指导仍是呼吸和重症医学界研究的重点和热点。白介素（interleukin,IL）-33是新近发现的IL-1家族成员,在炎症、感染、自身免疫性疾病等多种疾病中发挥重要的警报素作用,促进机体的炎症反应,加重机体组织的损伤。故IL-33及其信号通路可能成为阻断炎症通路的级联反应的一个潜在的分子靶点。本文就IL-33在ARDS中的研究进展做一综述。

关键词：急性呼吸窘迫综合症白介素-33 细胞因子警报素信号通路

Taxonomic Status of Daduhe Loquat （Eriobotrya prinoides var. dadunensis）

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Journal of Agricultural Science and Technology(B) 2012年第6期2卷 659-664页

作者： Wang Yongqing Yan juan Yang Qin fu Yan Luo Nan Lv Xiulan College of Horticulture Sichuan Agricultural University Ya'an 625014 Sichuan China

The taxonomic status of Daduhe loquat （E. prinoides var. dadunensis） was studied through analyzing genetic relationships among Oakleaf loquat （E. prinoides）, Daduhe loquat and Common loquat （E. japonica） using inter simple sequence repeats （ISSR） molecular marker and morphologic marker in this paper. Based on ISSR marker research, the similarity coefficient between Oakleaf loquat and Common loquat was lower than the similarity coefficient between Oakleaf loquat and Daduhe loquat while the similarity coefficient between Daduhe loquat and Common loquat was intermediate. The highest additivity was obtained when Daduhe loquat was regarded as the undetermined hybrid （45.8%）. The specific bands of Oakleaf loquat and Common loquat were present in Daduhe loquat. Based on morphologic traits research, Daduhe loquat was also between Oakleaf loquat and Common loquat but a little leaning to Oakleaf loquat. All the results support that Daduhe loquat was hybrid of Oakleaf loquat and Common loquat.

关键词： Common loquat Daduhe loquat genetic relationship ISSR marker morphologic traits Oakleaf loquat taxonomic status.

Clinicopathological features of inflammatory demyelinating diseases in biopsy

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Chinese Medical Journal 2020年第9期133卷 1126-1128页

作者： Jia Wei Wei-Wei Xu Ke-Jie Wang Yong-juan fu Yue-Shan Piao De-Hong Lu Department of Pathology Xuanwu HospitalCapital Medical UniversityBeijing 100053China Department of Pathology Civil Aviation General HospitalBeijing 100025China

Inflammatory demyelinating diseases(IDD)of the central nervous system(CNS)occur throughout the world and are the leading cause of nontraumatic neurological disability in young adults.[1]Early diagnosis of IDD allows prompt immunotherapies that minimize relapse,disabilities and mortality.[2]Multiple sclerosis(MS)is the most frequent IDD in *** histological characteristics of chronic MS lesions are well known to neuropathologists;however,diagnosing an inflammatory demyelinating process in biopsy may be challenging since the specimens are frequently small and often represent only parts of a larger lesion.[3]furthermore,the histopathological hallmarks of acute MS differ fundamentally from the well-known characteristics of chronic demyelinated plaques observed in autopsies.[3]Kuhlmann et al[4]recently proposed a new histological classification system for MS *** this new classification system corresponds to clinical manifestations and thus reflects the temporal multiplicity of MS and whether it can be applied to all IDD cases remain to be further studied.

关键词： myelin biopsy diseases

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基于幅度加权的预失真线性调频超声编码激励

电子与信息学报 2013年第2期35卷 494-498页

作者：傅娟韦岗黄庆华华南理工大学电子与信息学院广州510640

为了提高医学超声成像的轴向分辨力和确保对比度,该文提出一种基于幅度加权的预失真线性调频编码新方法。该方法将线性调频发射信号幅度加权技术和回波信号旁瓣抑制技术相结合,一方面补偿超声探头对发射信号的影响,使得回波信号的带宽... 详细信息

为了提高医学超声成像的轴向分辨力和确保对比度,该文提出一种基于幅度加权的预失真线性调频编码新方法。该方法将线性调频发射信号幅度加权技术和回波信号旁瓣抑制技术相结合,一方面补偿超声探头对发射信号的影响,使得回波信号的带宽不局限于探头,提高轴向分辨力;另一方面消除发射信号幅频特性的菲涅耳波纹,提高发射信号的带宽并采用失配滤波器进行脉冲压缩,实现旁瓣抑制,确保成像对比度。仿真结果表明:相对恒包络线性调频编码,预失真线性调频编码方法不仅提高了轴向分辨力,而且最大旁瓣幅度减小至-48 dB以下,满足医学成像对比度要求。FieldII仿真B超图像结果表明:恒包络线性调频和预失真线性调频编码方法的轴向分辨力分别是0.35 mm和0.25 mm。

关键词：超声成像线性调频编码激励脉冲压缩幅度加权旁瓣抑制

超细VO_2粉末的制备及其可逆相变的原位表征

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稀有金属材料与工程 2015年第3期44卷 738-742页

作者：张少鸿付娟苏秋成付春红李新军中国科学院广州能源研究所中国科学院可再生能源重点实验室广东广州510640

采用氧化还原法,在N2保护气氛中,通过程序控温,用草酸还原V2O5制备VO2超细粉末,重点考察原料配比对还原产物物相纯度的影响。采用X射线衍射仪（XRD）和扫描电子显微镜（SEM）及X射线能量色散谱仪（EDS）分析产物的相组成和微观形貌,通... 详细信息

采用氧化还原法,在N2保护气氛中,通过程序控温,用草酸还原V2O5制备VO2超细粉末,重点考察原料配比对还原产物物相纯度的影响。采用X射线衍射仪（XRD）和扫描电子显微镜（SEM）及X射线能量色散谱仪（EDS）分析产物的相组成和微观形貌,通过同步热分析（STA）和原位XRD研究VO2粉体的热致可逆相变特性。结果表明：V2O5和草酸以1：1.2~1.4的摩尔比混合,可制得较纯的单斜晶系VO2超细粉末,颗粒呈近球形,平均晶粒度约为50 nm。低温为M相（单斜晶系,P21/c）,升温时可转化为R相（正方晶系,P42/mnm）,升温相变点为68.1℃,降温相变点为60.2℃,滞后7.9℃。具有良好的热致可逆循环相变稳定性,M/R相多次循环转换的DSC热滞回线呈现很好的重现性。

关键词：二氧化钒氧化还原热致相变 X射线衍射同步热分析热滞回线

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词汇语用意义的认知理据

外语学刊 2012年第2期 57-60页

作者：周福娟苏州科技大学苏州215009

词汇不仅有其本身的概念意义,而且有语用意义。目前,国内外学者对词汇语用意义的研究重在分析词汇使用过程中语用意义收缩及扩充的现象和特点,对其变化机制的研究主要集中在语用等外部因素的制约上。认知语义学的最新研究成果为词汇语... 详细信息

词汇不仅有其本身的概念意义,而且有语用意义。目前,国内外学者对词汇语用意义的研究重在分析词汇使用过程中语用意义收缩及扩充的现象和特点,对其变化机制的研究主要集中在语用等外部因素的制约上。认知语义学的最新研究成果为词汇语用意义的识解提供了新的视角,概念隐喻、概念转喻和认知语境是词汇语用意义识解的认知理据。这些研究将会进一步促进词汇学的跨学科发展。

关键词：词汇语用意义概念隐喻概念转喻认知语境

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历史文化村镇价值评价的意义与方法

西安建筑科技大学学报（自然科学版） 2012年第5期44卷 644-650,656页

作者：邵甬付娟娟同济大学建筑与城市规划学院上海200092

价值评价构成了历史文化村镇"评选-规划-管理-监测"的基础.重点探讨了历史文化村镇价值评价的意义与目的以及评价的方法,并分别从评价因子的确定、层次结构、评分标准三个方面进行了深入阐述,试图建构适合于中国历史文化村镇的价值评价... 详细信息

价值评价构成了历史文化村镇"评选-规划-管理-监测"的基础.重点探讨了历史文化村镇价值评价的意义与目的以及评价的方法,并分别从评价因子的确定、层次结构、评分标准三个方面进行了深入阐述,试图建构适合于中国历史文化村镇的价值评价的体系.

关键词：历史文化村镇价值评价意义方法