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On-chip photonic spatial-temporal descrambler

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Chip 2023年第2期2卷 1-7页

作者： Wenkai Zhang Xueyi Jiang wentao gu Junwei Cheng Hailong Zhou Jianji Dong Dongmei Huang Xinliang Zhang Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Optics Valley Laboratory Wuhan 430074China The Hong Kong Polytechnic University Shenzhen Research Institute Shenzhen 518057China Photonics Research Institute Department of Electrical EngineeringThe Hong Kong Polytechnic UniversityHong Kong 999077China

As an indispensable part to compensate for the signal crosstalk in fiber communication systems,conventional digital multi-input multi-output(MIMO)signal processor is facing the challenges of high com-putational complexity,high power consumption and relatively low processing speed.The optical MIMOenables the best use of light and has been proposed to remedy this limitation.However,the currently existing optical MIMO methods are all restricted to the spatial di-mension,while the temporal dimension is neglected.Here,an on-chip spatial-temporal descrambler with four channels were devised and its MIMO functions were experimentally verified simultaneously in both spatial and temporal dimensions.The spatial crosstalk of single-channel descrambler and four-channel descrambler is respectively less than-21 dB and-18 dB,and the time delay is simultaneously com-pensated successfully.Moreover,a more universal model extended to mode-dependent loss and gain(MDL)compensation was further de-veloped,which is capable of being cascaded for the real optical trans-mission system.The first attempt at photonic spatial-temporal de-scrambler enriched the varieties of optical MIMO,and the proposed scheme provided a new opportunity for all-optical MIMO signal pro-cessing.

关键词： Optical signal processing Photonic integrated circuits Opti-cal MIMO Optical matrix computing

Network prediction of surgical complication clusters:a prospective multicenter cohort study

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Science China(Life Sciences) 2023年第7期66卷 1636-1646页

作者： Xiaochu Yu Peng Wu Zixing Wang Wei Han Yuguang Huang Shijie Xin Qiang Zhang Shengxiu Zhao Hong Sun guanghua Lei Taiping Zhang Luwen Zhang Yubing Shen wentao gu Hongwei Li Jingmei Jiang Peking Union Medical College Hospital Chinese Academy of Medical SciencesBeijing100730China Institute of Basic Medical Sciences Chinese Academy of Medical Sciences/School of Basic MedicinePeking Union Medical CollegeBeijing100005China The First Hospital of China Medical University Shenyang110001China Qinghai Provincial People’s Hospital Xining810007China Xiangya Hospital of Central South University Changsha410008China Research Department PaodingAIBeijing100083China

Complicated relationships exist in both occurrence and progression of surgical complications,which are difficult to account for using a separate quantitative method such as prediction or grading.Data of 51,030 surgical inpatients were collected from four academic/teaching hospitals in a prospective cohort study in China.The relationship between preoperative factors,22 common complications,and death was analyzed.With input from 54 senior clinicians and following a Bayesian network approach,a complication grading,cluster-visualization,and prediction(GCP)system was designed to model pathways between grades of complication and preoperative risk factor clusters.In the GCP system,there were 11 nodes representing six grades of complication and five preoperative risk factor clusters,and 32 arcs representing a direct association.Several critical targets were pinpointed on the pathway.Malnourished status was a fundamental cause widely associated(7/32 arcs)with other risk factor clusters and complications.American Society of Anesthesiologists(ASA)score≥3 was directly dependent on all other risk factor clusters and influenced all severe complications.Grade III complications(mainly pneumonia)were directly dependent on4/5 risk factor clusters and affected all other grades of complication.Irrespective of grade,complication occurrence was more likely to increase the risk of other grades of complication than risk factor clusters.

关键词： surgical complication network system complication grading complication prediction complication management

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浙江省内河旅游专用航道通航尺度研究

水运工程 2024年第3期 133-135,152页

作者：隋博怡顾文韬田丽英嘉兴市世纪交通设计有限公司浙江嘉兴314000 湖州市公路水运工程监理咨询有限公司浙江湖州313220

随着城市化的发展和船舶大型化及货运需求的转变,浙江省内大部分低等级内河航道货运功能已逐渐弱化,逐步向休闲、旅游、观光、生态等复合功能转变。考虑到当前缺乏内河旅游专用航道通航技术尺度的相关规定,为充分发挥低等级内河航道的... 详细信息

随着城市化的发展和船舶大型化及货运需求的转变,浙江省内大部分低等级内河航道货运功能已逐渐弱化,逐步向休闲、旅游、观光、生态等复合功能转变。考虑到当前缺乏内河旅游专用航道通航技术尺度的相关规定,为充分发挥低等级内河航道的旅游、生态等功能,保障旅游船舶安全通航,通过分析旅游及旅游船舶与货运及货运船舶的区别,对浙江省内河旅游专用航道建设涉及的航道尺度、代表船型等技术标准进行研究,制定出浙江省旅游专用航道通航尺度标准,为低等级货运航道发展旅游专用航道提供技术支撑。

关键词：旅游航道通航尺度技术标准

美国的医保“强制险”——美国立法打通医保资金瓶颈

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中国卫生产业 2006年第12期3卷 87-88页

作者： wentao gu Louis Rubjno 魏东海美国芝加哥大学美国北岭加州州立大学中国广州医学院

美国作为世界上经济最发达的国家,2005年其医疗卫生的总支出已占GDP的16%,高居全球之首,但是美国迄今尚有15.2%的人群没有医疗保险。如何解决这个问题,最近,马萨诸塞州出台了新措施:通过立法强制未参保人群参保。这种做法或许会对中国... 详细信息

美国作为世界上经济最发达的国家,2005年其医疗卫生的总支出已占GDP的16%,高居全球之首,但是美国迄今尚有15.2%的人群没有医疗保险。如何解决这个问题,最近,马萨诸塞州出台了新措施:通过立法强制未参保人群参保。这种做法或许会对中国当前正在进行的医疗卫生体制改革有所启发。

关键词：美国立法医疗卫生体制改革医保资金医疗保险人群

个体依恋风格对亲密话语韵律及嗓音特征的影响

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声学学报 2022年第2期47卷 276-286页

作者：胡涵顾文涛南京师范大学语言科技研究所南京210097 南京师范大学南京210097

个体依恋风格可基于依恋回避、依恋焦虑这两个维度加以定义,并根据其取值高低划分为4种依恋类型。为探究依恋风格对亲密话语语音特征的影响,我们选取12对年轻异性情侣,采用亲密关系体验量表测出各人的依恋回避与焦虑值。通过半开放式的... 详细信息

个体依恋风格可基于依恋回避、依恋焦虑这两个维度加以定义,并根据其取值高低划分为4种依恋类型。为探究依恋风格对亲密话语语音特征的影响,我们选取12对年轻异性情侣,采用亲密关系体验量表测出各人的依恋回避与焦虑值。通过半开放式的约会剧本,诱导被试产出亲密语气的目标句,再单独朗读这些目标句作为中性话语。基于9个韵律及嗓音参数的线性混合模型分析显示,高回避高焦虑者的基频标准差和基频范围显著低于其它依恋类型的被试,亲密与中性话语在基频均值、谐噪比上的差异受到依恋回避值的调节。进而,对基频动态曲线做广义加性混合模型分析,发现高回避者容易出现亲密比中性话语基频曲线更低的模式,而无论焦虑值高低,亲密与中性话语基频曲线均无显著差异。基于前述9个声学参数,采用5种监督性学习分类算法,能够有效识别4种依恋类型,尤其对高回避高焦虑、低回避低焦虑者的识别率更高,其中基频均值对分类的贡献度最大。研究初步揭示了依恋风格对亲密话语韵律及嗓音特征的作用规律,为依恋系统的情绪调节理论提供了支持。

关键词：线性混合模型动态曲线焦虑值声学参数嗓音特征依恋类型依恋回避半开放式

The Inherent Law of the Unpredictability of Financial Asset Price Fluctuations: Multistability and Chaos

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Journal of Systems Science & Complexity 2024年第2期37卷 776-804页

作者： gu Enguo Huanghe University of Science and Technology Zhengzhou 450006China

This paper aims at understanding the price dynamics generated by the interaction of traders relying on heterogeneous expectations in an asset pricing model.In the present work the authors analyze a financial market populated by five types of boundedly rational speculators-two types of fundamentalists,two types of chartists and trend followers which submit buying/selling orders according to different trading rules.The authors formulate a stock market model represented as a 2 dimensional piecewise linear discontinuous map.The proposed contribution to the existing financial literature is two aspects.First,the authors perform study of the model involving a 2 dimensional piecewise linear discontinuous map through a combination of qualitative and quantitative methods.The authors focus on the existence conditions of chaos and the multi-stability regions in parameter plane.Related border collision bifurcation curves and basins of multi-attractors are also given.The authors find that chaos or quasi-period exists only in the case of fixed point being a saddle(regular or flip)and that the coexistence of multiple attractors may exist when the fixed point is an attractor,but it is common for spiral and flip fixed points.

关键词： BCB curve chaos financial market heterogeneous agents multiple attractors piecewise linear discontinuous map

Evaluating the historical,clinical,and cultural value of the Tian Hui Yi Jian

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Journal of Traditional Chinese Medicine 2024年第1期44卷 220-221页

作者： YU Linyong gu Man China Academy of Chinese Medical Sciences Beijing 100700China Institute for History of Medicine and Medical Literature China Academy of Chinese Medical SciencesBeijing 100700China

Tian Hui Yi Jian was compiled by the Tianhui Medical Manuscripts Compilation Group,which includes scholars from the Institute for History of Medicine and Medical Literature of the China Academy of Chinese Medical Sciences(CACMS),Chengdu University of Traditional Chinese Medicine,Chengdu Institute of Cultural Relics and Archaeology,and Jingzhou Cultural Relics Protection Center.It was published by the Cultural Relics Press in November 2022.The volume includes images of eight medical manuscripts,along with the Team's annotations,and photographs of a lacquered figurine with meridian-channels and words on its surface.

关键词： surface Chengdu Tian

Evolution and conservation genetics of pangolins

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Integrative Zoology 2024年第3期19卷 426-441页

作者： Tongtong gu Jingyang HU Li YU State Key Laboratory for Conservation and Utilization of Bio-Resource in Yunnan School of Life SciencesYunnan UniversityKunmingChina

Pangolins(Pholidota,Manidae)are classified as an evolutionarily distinct and globally endangered mammal due to their unique morphology(nail-like scales and a myrmecophagous diet)and being the victim of heavy poaching and worldwide trafficking.As such,pangolins serve as a textbook example for studying the special phenotypic evolutionary adaptations and conservation genetics of an endangered species.Recent years have demonstrated significant advancements in the fields of molecular genetics and genomics,which have translated to a series of important research achievements and breakthroughs concerning the evolution and conservation genetics of pangolins.This review comprehensively presents the hitherto advances in phylogeny,adaptive evolution,conservation genetics,and conservation genomics that are related to pangolins,which will provide an ample understanding of their diversity,molecular adaptation mechanisms,and evolutionary potentials.In addition,we highlight the priority of investigating species/population diversity among pangolins and suggest several avenues of research that are highly relevant for future pangolin conservation.

关键词： adaptive evolution conservation genetics conservation genomics pangolins phylogeny

母语为粤语和英语的普通话学习者的话语基频偏误特征

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清华大学学报（自然科学版） 2016年第11期56卷 1166-1172页

作者：顾文涛南京师范大学语言科技研究所

语音的自然度在很大程度上取决于韵律特征如声调、句调、轻重音等,而普通话、粤语与英语在这些特征上形成了鲜明对比。该文以普通话为研究对象,采用声学分析比较了普通话母语被试以及母语分别为标准粤语和美式英语的2组普通话二语被试... 详细信息

语音的自然度在很大程度上取决于韵律特征如声调、句调、轻重音等,而普通话、粤语与英语在这些特征上形成了鲜明对比。该文以普通话为研究对象,采用声学分析比较了普通话母语被试以及母语分别为标准粤语和美式英语的2组普通话二语被试的基频特征。通过一组句类、目标字调、焦点位置受控的语句,考察了每组被试的句调、声调、焦点重音的基频编码方式以及三者间的交互作用。研究发现,2组二语被试的偏误特征有同有异,很大程度上可归因于语言负迁移效应,这为汉语的二语语音韵律教学提供了启示。

关键词：声调句调焦点重音普通话粤语英语二语韵律偏误