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SQL-to-text模型的组合泛化能力评估方法

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计算机工程 2024年第3期50卷 326-335页

作者：陈琳范元凯何震瀛刘晓清杨阳汤路民复旦大学计算机科学技术学院上海200433 星环信息科技(上海)股份有限公司上海200233

数据库的结构化查询语言(SQL)到自然语言的翻译(SQL-to-text)能提高关系数据库的易用性。近年来该领域主要使用机器学习的方法进行研究并已取得一定进展,然而现有翻译模型的能力仍不足以投入实际应用。由于组合泛化能力是SQL-to-text模... 详细信息

数据库的结构化查询语言(SQL)到自然语言的翻译(SQL-to-text)能提高关系数据库的易用性。近年来该领域主要使用机器学习的方法进行研究并已取得一定进展,然而现有翻译模型的能力仍不足以投入实际应用。由于组合泛化能力是SQL-to-text模型在实际应用中提升翻译效果的必要能力,且目前缺少对此类模型组合泛化能力的研究,因此提出一种SQL-to-text模型的组合泛化能力评估方法。基于现有的SQL-to-text数据集生成大量SQL和对应的自然语言翻译(SQL-自然语言对),并按SQL-自然语言对所含SQL子句的个数将其划分为训练数据与测试数据,使测试数据中的SQL子句皆以不同的组合方式在训练数据中出现,从而得到可评估模型组合泛化能力的新数据集。评估结果表明,该方法对查询知识的使用程度较高,划分数据的方式更加合理,所得数据集符合评估组合泛化能力的需求且贴近模型的实际应用场景,受到原始数据集的限制程度更低,并证实现有模型的组合泛化能力仍需提升,其中针对SQL-to-text任务设计的关系感知图转换器模型组合泛化能力最弱,表明原有的SQL-to-text数据集对组合泛化能力的考察存在欠缺。

关键词：结构化查询语言组合泛化机器翻译数据库长短期记忆模型

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低速风洞收缩段设计加工与流动数值模拟

科技导报 2008年第23期26卷 27-29页

作者：李钢徐燕骥鲍铁铸孟涛王元凯聂超群朱俊强中国科学院工程热物理研究所先进能源动力重点实验室北京100080 北京开天风机厂北京100088

介绍了一种简洁有效的低速风洞收缩段的设计、加工以及校验的方法。通过选择合适的收缩段曲线,绘制出收缩段的三维图,然后在三维造型软件中将收缩段曲面展开为平面,得到了所展开平面上的曲线坐标。将这些坐标输入到数控等离子切割设备,... 详细信息

介绍了一种简洁有效的低速风洞收缩段的设计、加工以及校验的方法。通过选择合适的收缩段曲线,绘制出收缩段的三维图,然后在三维造型软件中将收缩段曲面展开为平面,得到了所展开平面上的曲线坐标。将这些坐标输入到数控等离子切割设备,加工出制备收缩段所需的原料。最后通过数值模拟得到了该收缩段的流场特点。

关键词：风洞收缩段设计加工流动数值模拟

Key Technology Research for Mobile Police Terminal Fingerprint Collection for Quick Comparison Using Automated Fingerprint Identification System

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Journal of Forensic Science and Medicine 2019年第1期5卷 57-60页

作者： Shengjun Sun Yaomin Gu Lan wang Ping Gu yuankai Li Department of Shanghai Police Station Science and Technology Research Management CenterShanghaiP.R.China Department of Shanghai Police College ShanghaiP.R.China

When the face of the inspected person and the photograph on their identification(ID)card cannot be clearly matched,the individual is undocumented,or the ID is forged,it is often difficult for the on‑site police to respond in *** study proposes a number of key technologies for collecting fingerprints at mobile terminals for fast comparison using an automated fingerprint ID system(AFIS).These technologies ensure intelligent mobile fingerprint collection and allow the transmission of fingerprint information from the terminal to AFIS,over a wireless public security network for real‑time fingerprint *** study also analyzes the feasibility and effectiveness of the proposed technologies for system design and the applicability of fingerprint ID *** system achieved good results in a test by the Shanghai Public Security Bureau Criminal Investigation Corps.

关键词： Automated fingerprint identification system fingerprint intelligent mobile terminal personal identification public safety system structure

核医学SPECT/CT骨断层扫描方案的优化

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中国医疗器械杂志 2016年第5期40卷 377-379页

作者：王渊恺朱汇庆刘淼刘从进刘兴党复旦大学附属华山医院核医学科上海市200040

目的研究SPECT/CT骨断层扫描中,探寻采集速度与图像质量间的平衡点。方法自2014年4月以来,每2个月为1周期,逐步调节采集条件。有三位医生诊断融合后SPECT/CT图像质量为基础,结合图像分辨率综合评价采集条件调整后的图像。结果 7种采集... 详细信息

目的研究SPECT/CT骨断层扫描中,探寻采集速度与图像质量间的平衡点。方法自2014年4月以来,每2个月为1周期,逐步调节采集条件。有三位医生诊断融合后SPECT/CT图像质量为基础,结合图像分辨率综合评价采集条件调整后的图像。结果 7种采集条件所拍摄的图像均符合诊断要求。"方案3"方法推广于临床工作最佳。结论骨断层扫描中采集参数可以设置5 s/帧,合计64帧(5.625o),探头自动贴近,扫描方法为连续,所获得的SPECT图像的采集效率高。同时推荐使用"连续"代替"步进"方法采集骨断层显像。

关键词：体层摄影术发射型计算机单光子骨扫描方案优化

Chaotic characteristics and attractor evolution of friction noise during friction process

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Friction 2018年第1期6卷 47-61页

作者： Cong DING Hua ZHU Guodong SUN yuankai ZHOU Xue ZUO School of Mechatronic Engineering China University of Mining and Technology School of Mechanical Engineering Jiangsu University of Science and Technology Jiangsu Provincial Key Laboratory of Advanced Manufacturing for Marine Mechanical Equipment Jiangsu University of Science and Technology

Friction experiments are conducted on a ring-on-disk tribometer, and friction noise produced during the friction process is extracted by a microphone. The phase trajectory and chaotic parameters of friction noise are obtained by phase-space reconstruction, and its attractor evolution is analyzed. The results indicate that the friction noise is chaotic because the largest Lyapunov exponent is positive. The phase trajectory of the friction noise follows a "convergence-stability-divergence" pattern during the friction process. The friction noise attractor begins forming in the running-in process, and the correlation dimension D increases gradually. In the stable process, the attractor remains steady, and D is stable. In the last step of the process, the attractor gradually disappears, and D decreases. The friction noise attractor is a chaotic attractor. Knowledge of the dynamic evolution of this attractor can help identify wear state changes from the running-in process to the steady and increasing friction processes.

关键词： friction noise phase trajectory chaotic parameters Lyapunov exponent chaotic attractor

种植密度和氮肥用量对百色烟区烤烟叶片发育及烟叶产量的影响

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作物杂志 2024年第2期 189-197页

作者：解梦凡贾海江曲远凯农世英李俊霖王杰刘力玮闫慧峰中国农业科学院烟草研究所/农业农村部烟草生物学与加工重点实验室山东青岛266101 广西中烟工业有限责任公司广西南宁530001 广西壮族自治区烟草公司百色市公司广西百色533000

为明确不同种植密度和氮肥用量下烤烟的干物质积累、分配情况及烤烟中、上部叶的发育特征,以K326为试验材料,设置种植密度和氮肥用量两因素随机区组试验,分析影响烤烟群体和个体干物质积累的叶片发育特征。结果表明,种植密度和氮肥用量... 详细信息

为明确不同种植密度和氮肥用量下烤烟的干物质积累、分配情况及烤烟中、上部叶的发育特征,以K326为试验材料,设置种植密度和氮肥用量两因素随机区组试验,分析影响烤烟群体和个体干物质积累的叶片发育特征。结果表明,种植密度和氮肥用量对烤烟成熟期单株叶片干物质积累量均有极显著影响;成熟期烤烟单株叶片干物质积累量、整株干物质积累量、冠根比受种植密度和氮肥用量极显著交互效应的影响。施氮提高了烤烟中、上部叶现蕾期时的比叶重和叶片密度,种植密度对现蕾期和成熟期的中、上部叶单叶重及比叶重的影响均达到了极显著水平。烤烟叶片发育与干物质积累的相关分析表明,成熟期烤烟中部叶的比叶重和烤烟单株干物质积累量呈显著正相关,上部叶的叶片厚度与烤烟群体干物质积累量呈正相关。在低密度条件下,氮肥用量112.5 kg N/hm^(2)时烤烟上等烟比例达73.35%,在中等密度下,氮肥用量112.5 kg N/hm^(2)时烤烟产量、产值和均价达到各处理的最大值。综合考虑,在广西百色烟区周年烟稻轮作种植模式下,种植密度1.82万株/hm^(2)、基施氮肥用量112.5 kg N/hm^(2)处理能实现烤烟K326的最佳经济效益。

关键词：氮肥用量种植密度干物质积累量叶片发育特性产量

Molecular mechanisms of autophagy and implications in liver diseases

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Liver Research 2023年第1期7卷 56-70页

作者： yuankai Wu Hayden Weng Siong Tan Jin-Yi Lin Han-Ming Shen Haihe wang Guang Lu Department of Infectious Diseases The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouChina Department of Physiology Yong Loo Lin School of MedicineNational University of SingaporeSingapore Department of Physiology Zhongshan School of MedicineSun Yat-sen UniversityGuangzhouChina Department of Biomedical Sciences Faculty of Health SciencesMinistry of Education Frontiers Science Center for Precision OncologyUniversity of MacaoMacaoChina Department of Biochemistry Zhongshan School of MedicineSun Yat-sen UniversityGuangzhouChina

Autophagy is a highly conserved process in which cytosolic contents are degraded by the lysosome,which plays an important role in energy and nutrient balance,and protein or organelle quality *** liver is the most important organ for *** to date have revealed a significant role of autophagy in the maintenance of liver homeostasis under basal and stressed conditions,and the impairment of autophagy has been closely linked to various liver ***,a comprehensive understanding of the roles of autophagy in liver diseases may help in the development of therapeutic strategies via targeting *** this review,we will summarize the latest understanding of the molecular mechanisms of autophagy and systematically discuss its implications in various liver diseases,including alcohol-related liver disease,non-alcoholic fatty liver disease,viral hepatitis,hepatocellular carcinoma,and acetaminophen-induced liver injury.

关键词： Autophagy Alcohol-related liver disease(ARLD) Non-alcoholic fatty liver disease(NAFLD) Viral hepatitis Hepatocellular carcinoma(HCC) Acetaminophen(APAP)

Molecular characterization,expression patterns,and subcellular localization of a classical and a novel nonclassical MHC class Iαmolecules from Japanese eel Anguilla japonica

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渔业学报（英文） 2023年第2期8卷 108-123页

作者： Jianjun Feng Xinwei Peng Peng Lin Yilei wang Ziping Zhang yuankai Xu Pengyun Chen Jingying Wu Engineer Research Center of Eel Modern Industry Technology Ministry of EducationXiamen361021China College of Fisheries Jimei UniversityXiamen361021China College of Animal Science Fujian Agriculture and Forestry UniversityFuzhou350002China Ningbo Institute of Oceanography Ningbo315832China

Major histocompatibility complex(MHC)molecules play a critical role in the immune response of vertebrate animals by presenting foreign antigens to T *** this study,we first cloned and identified a classical and a novel nonclassical MHC Iαmolecules from Japanese eel(Anguilla japonica),named as AjMHC I-UBA and AjMHC I-L,*** full-length cDNA of AjMHC I-UBA contains an open reading frame(ORF)of 1047 bp encoding a predicted protein of 348 amino acids,while AjMHC I-L 1089 bp encodes 362 amino *** multiple alignment of the amino acid sequence showed that AjMHC I-UBA and AjMHC I-L consist of an N-terminal MHC I superfamily domain withinα1 andα2 helices,an IgC-MHC Iα3 domain,and a transmembrane region close to the C-terminal,which are similar to other fish and mammal *** polymorphism analysis showed that eight different major alleles of AjMHC I-UBA,named as AjMHC I-UBA*0101~1001,were identified from six Japanese eel ***,a distinguishing signature of the nonclassical L-lineage genes specific motif“HINMTL”,including an N-glycosylation site(NXS/T),was present in theα3 domain of AjMHC I-L *** the predicted three-dimensional structures of AjMHC I-UBA and AjMHC I-L are similar to that of human MHC Iα,phylogenetic analysis showed that these two protein molecules belong to classical MHC I UBA gene of U-lineage and nonclassical MHC I gene of L-lineage,*** real-time polymerase chain reaction(qRT-PCR)analysis revealed that the highest expression of AjMHC I-UBA and AjMHC I-L was found in the intestine and the expression level of AjMHC I-UBA in all of the examined tissues was significantly higher than that of AjMHC *** expressions of AjMHC I-UBA and AjMHC I-L in liver,kidney and spleen were significantly induced following injection with the viral mimic poly I:C,LPS,and Aeromonas hydrophila *** vitro,the AjMHC I-UBA and AjMHC I-L transcripts of Japanese eel liver cells were si

关键词： Anguilla japonica MHC Iα mRNA expression Subcelluar localization

ALK gene expression status in pleural effusion predicts tumor responsiveness to crizotinib in Chinese patients with lung adenocarcinoma

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Chinese Journal of Cancer Research 2016年第6期28卷 606-616页

作者： Zheng wang Xiaonan Wu Xiaohong Han Gang Cheng Xinlin Mu Yuhui Zhang Di Cui Chang Liu Dongge Liu yuankai Shi Department of Pathology Beijing HospitalNational Center of Gerontology Department of Medical Oncology Beijing HospitalNational Center of Gerontology Department of Medical Oncology National Cancer Center/Cancer Institute &Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Department of Respiratory and Critical Care Medicine Peking University People's Hospital Beijing Institute of Respiratory Medicine Beijing Chao-Yang Hospital Capital Medical University Department of Medical Oncology PLA Army General Hospital

Objective： The relationship between anaplastic lymphoma kinase（ALK） expression in malignant pleural effusion（MPE） samples detected only by Ventana immunohistochemistry（IHC） ALK（D5F3） and the efficacy of ALKtyrosine kinase inhibitor therapy is ***： Ventana anti-ALK（D5F3） rabbit monoclonal primary antibody testing was performed on 313 cell blocks of MPE samples from Chinese patients with advanced lung adenocarcinoma, and fluorescence in situ hybridization（FISH） was used to verify the ALK gene status in Ventana IHC ALK（D5F3）-positive samples. The follow-up clinical data on patients who received crizotinib treatment were ***： Of the 313 MPE samples, 27（8.6%） were confirmed as ALK expression-positive, and the Ventana IHC ALK（D5F3）-positive rate was 17.3%（27/156） in wild-type epidermal growth factor receptor（EGFR） MPE samples. Twenty-three of the 27 IHC ALK（D5F3）-positive samples were positive by FISH. Of the 11 Ventana IHC ALK（D5F3）-positive patients who received crizotinib therapy, 2 patients had complete response（CR）, 5 had partial response（PR） and 3 had stable disease（SD）.Conclusions： The ALK gene expression status detected by the Ventana IHC ALK（D5F3） platform in MPE samples may predict tumor responsiveness to crizotinib in Chinese patients with advanced lung adenocarcinoma.

关键词： Anaplastic lymphoma kinase fluorescence in situ hybridization immunohistochemistry lung adenocarcinoma pleural effusion crizotinib