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A Classification–Detection Approach of COVID-19 Based on Chest X-ray and CT by Using Keras Pre-Trained Deep learning Models

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Computer Modeling in Engineering & sciences 2020年第11期125卷 579-596页

作者： Xing Deng Haijian Shao Liang Shi Xia Wang Tongling Xie School of Computer Science Jiangsu University of Science and TechnologyZhenjiang212003China School of Automation Key Laboratory of Measurement and Control for CSEMinistry of EducationSoutheast UniversityNanjing210096China School of Computer Science and Communication Engineering Jiangsu UniversityZhenjiang212003China School of Information Science and Technology Nantong UniversityNantong226019China department of Electrical and Computer Engineering National University of Singapore117583Singapore The People’s Hospital of RUGAO Nantong226500China

The Coronavirus Disease 2019(COVID-19)is wreaking havoc around the world,bring out that the enormous pressure on national health and medical staff *** of the most effective and critical steps in the fight against COVID-19,is to examine the patient’s lungs based on the Chest X-ray and CT generated by radiation *** this paper,five keras-related deep learning models:ResNet50,InceptionResNetV2,Xception,transfer learning and pre-trained VGGNet16 is applied to formulate an classification-detection approaches of *** benchmark methods SVM(Support Vector Machine),CNN(Conventional Neural Networks)are provided to compare with the classification-detection approaches based on the performance indicators,i.e.,precision,recall,F1 scores,confusion matrix,classification accuracy and three types of AUC(Area Under Curve).The highest classification accuracy derived by classification-detection based on 5857 Chest X-rays and 767 Chest CTs are respectively 84%and 75%,which shows that the keras-related deep learning approaches facilitate accurate and effective COVID-19-assisted detection.

关键词： COVID-19 detection deep learning transfer learning pre-trained models

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高维因子模型及其在统计机器学习中的应用

中国科学：数学 2020年第4期50卷 447-490页

作者：陈钊范剑青王丹复旦大学大数据学院上海200433 department of Operations Research and Financial Engineering Princeton UniversityPrincetonNJ 08544USA 上海纽约大学商学部上海200122

本文综述近年来因子模型研究的最新进展及其在统计机器学习中的应用.因子模型通过较少的因子实现降维,并为协方差矩阵提供了一种低秩加稀疏的结构,不仅受到高维数据分析领域的关注,也被广泛应用于计量经济学、数量金融学、基因组学、神... 详细信息

本文综述近年来因子模型研究的最新进展及其在统计机器学习中的应用.因子模型通过较少的因子实现降维,并为协方差矩阵提供了一种低秩加稀疏的结构,不仅受到高维数据分析领域的关注,也被广泛应用于计量经济学、数量金融学、基因组学、神经科学和图像处理等许多科学、工程及人文社科领域的研究中.本文系统阐述利用主成分分析方法提取潜在因子、估计因子载荷、异质结构与整体协方差矩阵的统计推断方法,这套方法被证明可以有效应对当前大数据所表现出的高维性、强相关性、厚尾性和异质性等重大挑战;另外,还重点介绍了高维因子模型在处理协方差矩阵估计、模型选择和多重检验等高维统计学习问题中的作用;最后,通过几个应用实例说明因子模型与现代机器学习问题之间的密切联系,其中包括当下流行的网络分析和低秩矩阵还原等.

关键词：因子模型主成分分析结构化协方差矩阵因子调节模型选择多重检验

Memristor based onα-In_(2)Se_(3)for emulating biological synaptic plasticity and learning behavior

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Science China Materials 2022年第6期65卷 1631-1638页

作者： Ying Zhao Yifei Pei Zichang Zhang Xiaoyu Li Jingjuan Wang Lei Yan Hui He Zhenyu Zhou Jianhui Zhao Jingsheng Chen Xiaobing Yan Key Laboratory of brain-like neuromorphic devices and Systems of Hebei Province College of Electronic and Information EngineeringHebei UniversityBaoding 071002China Cambricon Technologies Corporation Limited Beijing 100000China department of Materials Science and Engineering National University of SingaporeSingapore 117576Singapore

Nowadays,memristors are extremely similar to biological synapses and can achieve many basic functions of biological synapses,making them become a new generation of research hotspots for brain-like *** this work,we prepare a memristor based on two-dimensionalα-In_(2)Se_(3)nanosheets,which exhibits excellent electrical properties,faster switching speeds,and continuous tunability of device ***,most basic bio-synapse functions can be implemented faithfully,such as short-term memory(STM),long-term memory(LTM),four different types of spike-timing-dependent plasticity(STDP),and paired-pulse facilitation(PPF).More importantly,we systematically study three effective methods to achieve LTM,in which the reinforcement learning can be faithfully simulated according to the Ebbinghaus forgetting ***,we believe this work will promote the development of learning functions for brain-like computing and artificial intelligence.

关键词： memristors biological synapse learning behaviors 2D In_(2)Se_(3)

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社会互动中的具身性加工

科学通报 2022年第35期67卷 4236-4250页

作者：罗婉莹张莘耿海燕北京大学心理与认知科学学院行为与心理健康北京市重点实验室北京100871 department of Psychology University of Wisconsin-WhitewaterWhitewater WI 53190USA

在人际交互中,要达到良好的沟通和交流,除了从自我的角度感知交互对象及环境(包括物理环境和社会环境),人们还需要站在交互对象的角度想象和推测他/她的所见、所闻和所想,这是一个具身性加工的过程,被视为人际理解和沟通的基础.尽管目... 详细信息

在人际交互中,要达到良好的沟通和交流,除了从自我的角度感知交互对象及环境(包括物理环境和社会环境),人们还需要站在交互对象的角度想象和推测他/她的所见、所闻和所想,这是一个具身性加工的过程,被视为人际理解和沟通的基础.尽管目前具身认知领域受到了广泛的关注,但对“具身”概念的定义及理解还不是很清晰,不同研究者提及这个概念的时候可能含义不尽相同.本文首先对“具身”概念及其发展进行了辨析,并结合现有理论与实证研究对社会互动中的具身性加工进行讨论,特别是以自我-他人共享表征为主线,在行为、情绪和认知3个层面上讨论人际交互中的具身性加工.“共享”神经表征与镜像神经元系统密切相关,是指个体在加工他人行为、情绪与认知时,使用加工自我类似活动时的神经机制直接进行匹配或模拟,通过在大脑中“亲身经历”观察到的他人行为来实现对他人的理解,从而体现出具身性加工的特性.最后,本文对当前具身性加工研究的局限及未来的研究方向进行了探讨,提出未来有必要进一步考察其在更具生态效度情景下的作用机制.总之,本文结合丰富的实验例证梳理了具身性加工在社会互动中的普遍机制,对理解人际交互中的心理和行为有启示作用,同时也有助于深化社会认知中理解他人的相关研究.

关键词：社会互动具身性加工自我-他人共享表征镜像神经元

External application of two unrestricted herbal medicines to treat costochondritis in a young collegiate athlete: A case report

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Journal of Integrative Medicine 2020年第5期18卷 450-454页

作者： Bin Zhang Ying jiang Chun-song Cheng Hong Lin You-ping Guo Sports Teaching and Research Room Martial Arts TeamAnhui University 0f Truditional Chinese MedicineHejei 230038Anhui ProvinceChina Institute of Physical Education Anhui Normal UniversityWuhu 241002Anhui ProvinceChina Faculy of Chinese Medicne Macao Untiversily of Science and TechnologyTaipa 999078MacaoChina department of Obstetrics and Gynecology Zhuhai Fanghua Hospital.Zhuhai 519100Guangdong ProvinceChina

Costochondritis(ChC), especially chronic ChC, typically manifests as spontaneous vague pain in anterior chest area and often occurs in adolescents for unknown reasons;it has prevented many collegiate athletes from participating in physical training and competitions. A 21-year-old female collegiate taekwondo athlete suffering from chronic chest pain was sent by her coaches for diagnosis and treatment. Seated motion palpation was used to identify spontaneous and motion-involved pain areas. Palpation in the supine position was used to initially rule out breast diseases. X-ray, electrocardiogram, and cardiac Doppler ultrasound were used in conjunction with myocardial enzyme testing to rule out lung and cardiovascular diseases. The patient was treated using herbal medicines applied via an external patch. The medicine was comprised of Rhizoma Corydalis and borneol, and the treatment lasted for seven weeks. For five weeks patches were applied at a frequency of two or three times per day, followed by a two-week period of once per day. The patient reported that the pain was relieved after two weeks of external herb use, and the autonomic chest pain had resolved. Re-examination after one month showed that her upper limb range of motion was close to normal, and her psychological burden had almost disappeared. It is possible to seek more active medicinal treatment and more practical external products for young athletes who is suffering chronic ChC that affects the sport training and competitive performances.

关键词： Costochondritis Herbal medicine Tietze’s syndrome Chest pain Case report

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国外儿童认知发展与学习的最新研究述评

心理科学 2006年第3期29卷 735-739页

作者：佟秀丽莫雷 Zhe Chen 香港中文大学心理系华南师范大学心理系广州510631 department of Humanand Community Development University of California

认知发展变化是儿童发展研究的中心课题,而儿童学习是研究儿童认知发展变化的一个重要方面。20世纪90年代以来,随着儿童学习重新研究,儿童认知发展研究取得显著进展。本文在最新儿童认知发展和学习研究的基础上,概述儿童早期认知能力的... 详细信息

认知发展变化是儿童发展研究的中心课题,而儿童学习是研究儿童认知发展变化的一个重要方面。20世纪90年代以来,随着儿童学习重新研究,儿童认知发展研究取得显著进展。本文在最新儿童认知发展和学习研究的基础上,概述儿童早期认知能力的新发现以及儿童学习的有关研究和结论,并提出了新的研究框架。

关键词：认知发展儿童学习重波理论微观发生法

外科临床研究方法学指引——IDEAL框架及指南介绍与解读

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中国实用外科杂志 2020年第1期40卷 93-101页

作者：陕飞尹道馨李子禹喻佳洁褚红玲王胤奎 Allison Hirst 季加孚孙鑫 PeterMc Culloch 北京大学肿瘤医院暨北京市肿瘤防治研究所胃肠肿瘤中心恶性肿瘤发病机制及转化研究教育部重点实验室北京100142 IDEAL Collaboration Nuffield Department of Surgical SciencesUniversity of OxfordOxfordOX39DUUnited Kingdom IDEAL中国中心中国循证医学中心四川成都610041 北京大学第三医院临床流行病学研究中心北京100191

外科临床研究是临床实践重要组成部分。由于外科治疗具有侵袭性、复杂性、个体化、高度依赖操作者技能等特点,因此,其评估与药物治疗存在显著差异,但是仍然缺少相应的方法学框架和指南。IDEAL框架与指南[The Idea,Development,Explorati... 详细信息

外科临床研究是临床实践重要组成部分。由于外科治疗具有侵袭性、复杂性、个体化、高度依赖操作者技能等特点,因此,其评估与药物治疗存在显著差异,但是仍然缺少相应的方法学框架和指南。IDEAL框架与指南[The Idea,Development,Exploration,Assessment,and Longterm Follow-up(IDEAL)Framework and Recommendations]旨在针对外科手术创新、有创性医疗器械和其他复杂治疗干预措施建立科学、严谨的评价路径,并根据不同的技术发展阶段对研究方法、报告规范等进行推荐。

关键词：外科临床研究方法学指南 IDEAL

Prevalence and related factors of post-traumatic stress disorder among medical staff members exposed to H7N9 patients

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International Journal of Nursing sciences 2017年第1期4卷 63-67页

作者： Liling Tang Lingling Pan Liping Yuan Lei Zha Nursing department The First Affiliated Hospital of Wannan Medical College Wuhu 241000 An Hui Province China Intensive Care Unit The First Affiliated Hospital of Wannan Medical College Wuhu 241000 An Hui Province China Intensive Care Unit The Second People's Hospital of Wuhu Wuhu 241000 An Hui Province China

Objective: This study aimed to evaluate the prevalence and related factors of post-traumatic stress disorder (PTSD) symptoms among doctors and nurses who were exposed to H7N9 patients during the H7N9 influenza *** provide scientific basis for promoting the physical and psychological health of these staff ***: The 102 medical staff workers who were exposed to H7N9 patients were recruited through convenient sampling between January 2015 and May *** used a self-reported questionnaire,the PTSD Checklist-Civilian Version (PCL-C),to evaluate the PTSD symptoms among doctors and nurses from an intensive care unit (n =61),a respiratory department (n =20),and an emergency department (n =21).We then analyzed the related ***: Around 20.59% of the tested doctors and nurses showed PTSD *** sample had a mean PCL-C score of 30.00 ± *** differences in the scores of doctors and nurses with different genders,ages,professional titles,contact frequencies,trainings,and experiences were statistically significant (P psychological health of these staff members.

关键词： H7N9 PTSD PCL-C Medical staff Stress symptoms

妇产科住院医对联合全面的流产专科轮转的满意度调查

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世界核心医学期刊文摘（妇产科学分册） 2005年第9期1卷 58-58页

作者： Steinauer J. Drey E.A. Lewis R. 高雪莲 department of Obstetr ics Gynecology and Reproductive Sciences 1001 Potrero Avenue San Francisco CA 94110 United States Dr.

OBJECTIVE: To evaluate obstetrics and gynecology resident satisfaction with a comprehensive, integrated abortion rotation. METHODS: The University of Californ ia, San Francisco obstetrics and gynecology residency program includes a 6-week PGY-3 family planning rotation at an in-hospital clinic where abortions are p rovided up to 23 weeks of gestation. Residents annually evaluate the educational value of all clinical rotations on a 5-point Likert scale, with 5 indicating " maximum value," and 1 "no value." Using data from 1998-2003, we compared rating s of the family planning rotation with all other PGY-3 rotations. We also surve yed residents 1 to 3 years after graduation to assess the rotation qualitatively and quantitatively. RESULTS: Forty residents completed the abortion training, n one opted out of training, and all completed the evaluations. Of all rotations i n the third year, the family planning rotation was the highest rated (4.70), was similar in value to a high-volume surgical rotation (4.51, P >.10) and the ele ctive rotation (4.45, P >.05), and surpassed the average score for all inpatient rotations (4.00, P learning value.” CONCLUSION: Obstetrics and gynecology residente place high value in the Universi ty of California, San Francisco PGY-3 family planning rotation during their tra ining and in their first years of practice.

关键词：意度住院医师教学价值一所尼亚定量评价实践评价