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基于ALBERT的中文简历命名实体识别

计算机工程与设计 2024年第1期45卷 261-267页

作者：余丹丹黄洁党同心张克郑州大学网络空间安全学院河南郑州450003 战略支援部队信息工程大学数据目标工程学院河南郑州450001

现有的电子简历实体识别方法准确率低,采用BERT预训练语言模型虽能取得较高的准确率,但BERT模型参数量过大,训练时间长,其实际应用场景受限,提出一种基于ALBERT的中文电子简历命名实体识别方法。通过轻量版ALBERT语言模型对输入文本进... 详细信息

现有的电子简历实体识别方法准确率低,采用BERT预训练语言模型虽能取得较高的准确率,但BERT模型参数量过大,训练时间长,其实际应用场景受限,提出一种基于ALBERT的中文电子简历命名实体识别方法。通过轻量版ALBERT语言模型对输入文本进行词嵌入,获取动态词向量,解决一词多义的问题;使用BiLSTM获取上下文结构特征,深层次挖掘语义关系;将拼接后的向量输入到CRF层进行维特比解码,学习标签间约束关系,输出正确标签。实验结果表明,该方法在Resume电子简历数据集中取得了94.86%的F1值。

关键词：电子简历命名实体识别预训练语言模型双向长短时记忆网络条件随机场神经网络深度学习

人机协同教学对学生学习效果的影响——基于43项实验与准实验研究的元分析

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现代教育技术 2024年第2期34卷 33-42页

作者：徐振国王悦谢万里党同桐费建翔曲阜师范大学传媒学院山东日照276826 曲阜师范大学教育学院山东曲阜273165

当前,教育数字化转型助推人机协同教学的研究与实践日渐增多,但其对学生学习效果的影响尚存争议。为此,文章采用元分析方法,对国内外43篇实验和准实验研究文献进行分析,发现人机协同教学对学习效果具有中等正向影响,并且对能力层面的影... 详细信息

当前,教育数字化转型助推人机协同教学的研究与实践日渐增多,但其对学生学习效果的影响尚存争议。为此,文章采用元分析方法,对国内外43篇实验和准实验研究文献进行分析,发现人机协同教学对学习效果具有中等正向影响,并且对能力层面的影响更为显著。之后,文章将学段、学科、知识类型、协同形式作为调节变量,检验了调节变量的调节效应,并根据元分析结果提出了有效开展人机协同教学的建议。文章通过研究,旨在发挥人机协同教学的最佳效用,推动人工智能与教育教学的深度融合。

关键词：人机协同教学学习效果元分析教育数字化

Solar cycle variations in equatorial ionospheric zonal electric fields near sunrise

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Earth and Planetary Physics 2023年第3期7卷 378-388页

作者： JunJie Chen WenBin Wang JiuHou Lei tong dang Space Exploration Laboratory/School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China Department of Earth Sciences The University of Hong KongPokfulamHong Kong SARChina Chinese Academy of Sciences(CAS)Center for Excellence in Comparative Planetology/CAS Key Laboratory of Geospace Environment/Mengcheng National Geophysical Observatory University of Science and Technology of ChinaHefei 230026China High Altitude Observatory National Center for Atmospheric ResearchBoulderCO 80307USA

In this study,we investigate the solar cycle dependence of the sunrise ionospheric zonal electric fields at the equator under geomagnetically quiet *** using the Thermosphere–Ionosphere–Electrodynamics General Circulation Model(TIEGCM)reveal that the equatorial eastward electric field at sunrise decreases with the increase in solar activity,independent of longitude,season,and lower atmospheric *** solar cycle dependence of the sunrise zonal electric field is mainly related to the zonal wind ***,this solar cycle dependence of sunrise electric fields at the equator is dominated by the corresponding variation in the F-region dynamo because the response of conductivity and neutral winds near sunrise to increasing solar flux is stronger in the F-region than in the E-region,although the sunrise eastward enhancement of electric fields is mainly driven by the E-region zonal wind ***,the westward gradient of low-latitude F-region neutral winds near the dawn terminator tends to produce westward electric fields in the equatorial region that are more pronounced at solar maximum,whereas the midlatitude E-region dynamo induces an eastward enhancement of sunrise electric fields at the equator that decreases slightly with increasing solar *** study also reveals that the reason the eastward enhancement of equatorial zonal electric fields near dawn and dusk terminators show opposite solar cycle dependence is because of their different generation mechanisms.

关键词： ionosphere electrodynamics sunrise enhancement solar cycle dependence

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海上换流站无线通信系统设计

南方能源建设 2024年第4期11卷 88-101页

作者：梁泽勇邝建荣党彤陈艺中国能源建设集团广东省电力设计研究院有限公司广东广州510663 中国南方电网超高压输电公司广州局广东广州510663

[目的]针对海上换流站的特点,提出海上换流站无线通信系统设计方案。[方法]通过分析海上无线通信技术的特点以及目前的应用情况,结合海上换流站在设备运行、厂站警戒、人员活动等方面的需求,提出海上换流站无线通信系统的配置方案。[结... 详细信息

[目的]针对海上换流站的特点,提出海上换流站无线通信系统设计方案。[方法]通过分析海上无线通信技术的特点以及目前的应用情况,结合海上换流站在设备运行、厂站警戒、人员活动等方面的需求,提出海上换流站无线通信系统的配置方案。[结果]通过NAVTEX系统,实现了接收天气和安全信息的需求。通过雷达光电系统和VHF对船通信系统,实现了船舶入侵驱离的需求。通过UHF集群对讲系统、WiFi和移动通信系统,实现了人员日常通信的需求。通过救生艇应急通信系统、微波通信系统和卫星通信系统,实现了人员紧急避险的需求。[结论]研究的系统实现了海上换流站日常运维过程中基本的通信需求,确保设备和人员的安全,为海上换流站无线通信系统设计提供指导。

关键词：海上换流站通信技术特点通信需求无线通信系统配置方案

探头式共聚焦激光显微内镜量化指标诊断幽门螺杆菌相关萎缩性胃炎的临床研究

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中华消化内镜杂志 2024年第6期41卷 465-471页

作者：陈佳颖吴迪党彤汤泊夫刘琳贾语婧李志伟包头医学院第二附属医院消化内科包头014030 包头医学院第一附属医院重症医学科包头014010

目的量化探头式共聚焦激光显微内镜(probe-based confocal laser endomicroscopy,pCLE)诊断幽门螺杆菌相关萎缩性胃炎(***-associated chronic atrophic gastritis,HpCAG)的诊断指标,并评价诊断效能。方法研究分为2个阶段:第1阶段前瞻性纳入2021年11月至2022年9月在包头医学院第二附属医院行胃镜检查及内镜下活检并行13C呼气试验的患者作为研究对象,离线视频采用Image J图像分析软件测量pCLE视野中的毛细血管直径(capillary diameter,CD)、细胞间距(cells spacing,CS)、腺体间距(gland spacing,GS)、腺体面积(gland area,GA)这4个指标,通过分析受试者工作特征(receiver operating characteristic,ROC)曲线下面积,建立pCLE下量化指标诊断HpCAG的标准;第2阶段回顾性纳入2021年10月至2022年10月间在包头医学院第二附属医院行pCLE检查及13C呼气试验的病例,剔除与第1阶段数据重合的病例,试验采用单盲法,内镜医师和病理医师对彼此的诊断结果不知情,pCLE的诊断根据第1阶段获得的标准进行,统计分析pCLE诊断与组织病理学+13C呼气试验结果的一致性。结果第1阶段招募到35例患者共计191块标本入组,根据内镜活检病理结果及13C呼气试验结果将患者及胃黏膜标本分为4组,即幽门螺杆菌(Helicobacter pylori,HP)阳性萎缩性胃炎组(n=59)、HP阳性非萎缩性胃炎组(n=52)、HP阴性萎缩性胃炎组(n=40)、HP阴性非萎缩性胃炎组(n=40)。ROC曲线分析结果显示:在HP阳性患者中,GS区分慢性萎缩性胃炎与非萎缩性胃炎胃黏膜的最佳临界值为29.68μm,在4个参数中ROC曲线下面积最大;在HP阴性患者中,GS区分慢性萎缩性胃炎与非萎缩性胃炎胃黏膜的最佳临界值为23.57μm,在4个参数中ROC曲线下面积最大;在非萎缩性胃炎患者中,GS区分HP阳性与HP阴性胃黏膜的最佳临界值为20.57μm,在4个参数中ROC曲线下面积最大;在慢性萎缩性胃炎患者中,CD、CS、GS、GA区分HP阳性与HP阴性胃黏膜的最佳临界值分别为13.23μm、1.38μm、34.03μm、6066.5μm^(2),ROC曲线下面积分别为0.608、0.888、0.849、0.900。最终选择GS区分HpCAG与非HpCAG胃黏膜,最佳临界值为31.71μm,但考虑到难以通过图像下方的标尺测量31.71μm的距离,故将临界值改为30μm,因此将GS>30μm作为pCLE下HpCAG的诊断标准,此时诊断的敏感度和特异度分别为91.5%和76.0%。第2阶段观察了80例患者的224块标本:pCLE(GS>30μm)诊断HpCAG的敏感度、特异度、阳性预测值、阴性预测值和准确率分别为96.5%(164/170)、88.9%(48/54)、96.5%(164/170)、88.9%(48/54)和94.6%(212/224),与组织病理学+13C呼气试验的诊断一致性极好(Kappa=0.854)。结论pCLE下可以实现胃黏膜微观结构的定量监测,量化后的指标有助于提高HpCAG诊断的准确率。

关键词：胃炎,萎缩性幽门螺杆菌相关萎缩性胃炎探头式共聚焦激光显微内镜量化标准

Prediction of the thermospheric and ionospheric responses to the 21 June 2020 annular solar eclipse

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Earth and Planetary Physics 2020年第3期4卷 231-237页

作者： tong dang JiuHou Lei WenBin Wang MaoDong Yan DeXin Ren FuQing Huang Chinese Academy of Sciences Key Laboratory of Geospace Environment School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China Mengcheng National Geophysical Observatory University of Science and Technology of ChinaHefei 230026China Chinese Academy of Sciences Center for Excellence in Comparative Planetology University of Science and Technology of ChinaHefei 230026China High Altitude Observatory National Center for Atmospheric ResearchBoulderCOUSA

On 21 June 2020,an annular solar eclipse will traverse the low latitudes from Africa to Southeast *** highest latitude of the maximum eclipse obscuration is approximately 30°.This low-latitude solar eclipse provides a unique and unprecedented opportunity to explore the impact of the eclipse on the low-latitude ionosphere–thermosphere(I–T)system,especially in the equatorial ionization anomaly *** this study,we describe a quantitative prediction of the impact of this upcoming solar eclipse on the I–T system by using Thermosphere–Ionosphere–Electrodynamics General Circulation Model simulations.A prominent total electron content(TEC)enhancement of around 2 TEC units occurs in the equatorial ionization anomaly region even when this region is still in the shadow of the *** TEC enhancement lasts for nearly 4.5 hours,long after the solar eclipse has *** model control simulations indicate that the TEC increase is mainly caused by the eclipse-induced transequatorial plasma transport associated with northward neutral wind perturbations,which result from eclipse-induced pressure gradient *** results illustrate that the effect of the solar eclipse on the I–T system is not transient and linear but should be considered a dynamically and energetically coupled system.

关键词： solar eclipse ionosphere thermosphere coupling equatorial ionization anomaly model simulation

A simulation study of 630 nm and 557.7 nm airglow variations due to dissociative recombination and thermal electrons by high-power HF heating

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Earth and Planetary Physics 2017年第1期1卷 44-52页

作者： tong dang JiuHou Lei XianKang Dou WeiXing Wan CAS Key Laboratory of Geospace Environment School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China Mengcheng National Geophysical Observatory University of Science and Technology of ChinaHefei 230026China Collaborative Innovation Center of Astronautical Science and Technology Harbin 150001China Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China

One of the important effects of the ionospheric modification by high-power waves is the airglow enhancement. Both the thermal electrons and the dissociation recombination contribute to generate the airglow emissions during HF heating. However, the relative importance of the airglow emission induced by dissociative recombination and thermal electrons has been rarely investigated. In this study, we carry out a simulation study on the airglow produced by high-power HF heating at nighttime associated with dissociative recombination and thermal electrons. SAMI2(Sami2 is Another Model of the Ionosphere) is employed to simulate the ionospheric variations during the HF heating. The main conclusions from this study are as follows:(1) For the airglow induced by dissociative recombination, both 630.0 nm and 557.7 nm emissions show a decrease at the heating wave reflection height during the heating period,while when the heating is turned off, an increase is shown at lower altitudes. The reduction of airglow during the heating is caused by the rapid increase of electron temperature and the diffusion of plasmas dominates the after-heating airglow enhancement.(2) 630.0 nm emission due to thermal electrons is greatly enhanced at the wave reflection height, indicating that thermal electrons play a major role in exciting 630.0 nm emission. For the 557.7 nm emission, the excitation threshold(4.17 e V) is too high for thermal electrons.(3) The combined effect of dissociative recombination and thermal electrons could be the possible reason for the observed X-mode(extraordinary mode) suppression of 630.0 nm airglow during O-mode(ordinary mode) enhancement.

关键词： airglow thermal electron dissociative recombination HF heating

Confocal laser endomicroscopy distinguishing benign and malignant gallbladder polyps during choledochoscopic gallbladderpreserving polypectomy:A case report

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World Journal of Clinical Cases 2020年第24期8卷 6358-6363页

作者： Bo-Fu Tang tong dang Zhi-Heng Chang Qiu-Hong Wang Wei-Jie Han Department of Digestive Diseases Inner Mongolia Institute of Digestive DiseasesThe Second Affiliated Hospital of Baotou Medical CollegeBaotou 014030Inner Mongolia Autonomous RegionChina Department of Digestive Minimally Invasive Surgery The Second Affiliated Hospital of Baotou Medical CollegeBaotou 014030Inner Mongolia Autonomous RegionChina

BACKGROUND In the last decade, confocal laser endomicroscopy (CLE) has emerged as a newendoscopic imaging modality for real-time in vivo histological examination at themicroscopic level. CLE has been shown to be useful for distinguishing benign andmalignant lesions and has been widely used in many digestive diseases. In ourstudy, we used CLE for the first time to examine the morphology of cholesterolpolyps as well as the different parts of normal gallbladder *** SUMMARY A 57-year-old woman was diagnosed by ultrasound with a polyp of 21 mm in thegallbladder wall. She consented to polyp removal by laparoscopic *** laparoscopic cholecystectomy combined with choledochoscopicpolyp resection, CLE was used to observe the morphology of the polyp surfacecells. The appearance of the mucosa and microvessels in various parts of thegallbladder were also observed under CLE. Through comparison betweenpostoperative pathology and intraoperative CLE diagnosis, the reliability ofintraoperative CLE diagnosis was confirmed. CLE is a reliable method to examineliving cell pathology during cholecystectomy. Based on our practice, CLE shouldbe prioritized in the diagnosis of gallbladder *** Compared with traditional histological examination, CLE has several *** believe that CLE has great potential in this field.

关键词： Confocal laser endomicroscopy Laparoscopy Choledochoscope Gallbladder polyp Diagnosis Case report

Postprandial proximal gastric acid pocket and its association with gastroesophageal acid reflux in patients with short-segment Barrett’s esophagus

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2020年第7期21卷 581-589页

作者： Yuan-yuan NIAN Xian-mei MENG Jing WU Fu-chu JING Xue-qin WANG tong dang Jun ZHANG Department of Gastroenterology the Second Affiliated Hospital of Baotou Medical CollegeBaotou 014040China Department of Gastroenterology the Second Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710049China

Objective:To determine the characteristics of postprandial proximal gastric acid pockets(PPGAPs)and their association with gastroesophageal acid reflux in patients with Barrett’s esophagus(BE).Methods:Fifteen patients with BE(defined by columnar lined esophagus of≥1 cm)and 15 healthy individuals that were matched for age,gender,and body mass index,were *** fasting intragastric p H and the appearance time,length,lowest p H,and mean p H of the PPGAP were determined using a single p H electrode pull-through *** BE patients,a gastroesophageal reflux disease questionnaire(Gerd Q)was completed and esophageal 24-h p H monitoring was carried ***:The PPGAP was significantly longer(5(3,5)cm vs.2(1,2)cm)and the lowest p H(1.1(0.8,1.5)vs.1.6(1.4,1.9))was significantly lower in patients with short-segment BE than in healthy *** PPGAP started to appear proximally from the gastroesophageal p H step-up point to the esophageal *** acidity of the PPGAP was higher in the distal segment than in the proximal *** short-segment BE patients,there were significant correlations between the acidity and the appearance time and length of the *** length and acidity of the PPGAP were positively associated with gastroesophageal acid reflux *** acidity of the PPGAP was associated with the De Meester scores,the Gerd Q scores,and the fasting intragastric p ***:In patients with short-segment BE,a PPGAP is commonly *** length and acidity of PPGAP are associated with gastroesophageal acid reflux,the De Meester score,and the Gerd Q score in patients with short-segment BE.

关键词： Short-segment Barrett’s esophagus Postprandial proximal gastric acid pocket(PPGAP) Gastroesophageal acid reflux