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Efficient option pricing with a unary-based photonic computing chip and generative adversarial learning

Photonics Research 2023年第10期11卷 1703-1712页

作者： HUI ZHANG LINGXIAO wan SERGI RAMOS-CALDERER YUANCHENG ZHAN WAI-KEONG MOK HONG CAI FENG GAO XIANSHU LUO GUO-QIANG lo LEONG CHUAN KWEK JOSÉIGNACIO LATORRE AI QUN LIU Institute of Quantum Technologies(IQT) The Hong Kong Polytechnic UniversityHong KongChina Quantum Science and Engineering Centre(QSec) Nanyang Technological UniversitySingaporeSingapore Departament de Fisica Quantica i Astrofisica and Institut de Ciencies del Cosmos(ICCUB) Universitat de BarcelonaBarcelonaSpain Quantum Research Centre Technology Innovation InstituteAbu DhabiUAE Centre for Quantum Technologies National University of SingaporeSingaporeSingapore Institute of Microelectronics A*STAR(Agency for ScienceTechnology and Research)SingaporeSingapore Advanced Micro Foundry SingaporeSingapore National Institute of Education Nanyang Technological UniversitySingaporeSingapore

In the modern financial industry system,the structure of products has become more and more complex,and the bottleneck constraint of classical computing power has already restricted the development of the financial ***,we present a photonic chip that implements the unary approach to European option pricing,in combination with the quantum amplitude estimation algorithm,to achieve quadratic speedup compared to classical Monte Carlo *** circuit consists of three modules:one loading the distribution of asset prices,one computing the expected payoff,and a third performing the quantum amplitude estimation algorithm to introduce *** the distribution module,a generative adversarial network is embedded for efficient learning and loading of asset distributions,which precisely captures market *** work is a step forward in the development of specialized photonic processors for applications in finance,with the potential to improve the efficiency and quality of financial services.

关键词： computing loading estimation

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Soil Microbial Responses to Experimental Warming and Nitrogen Addition in a Temperate Steppe of Northern China

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Pedosphere 2014年第4期24卷 427-436页

作者： SHEN Rui-Chang XU Ming CHI Yong-Gang YU Shen wan Shi-Qiang Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographical Sciences and Natural Resources ResearchChinese Academy of Sciences University of Chinese Academy of Sciences Center for Remote Sensing and Spatial Analysis Department of EcologyEvolution and Natural ResourcesRutgers University14College Farm RoadNew Brunswick NJ 08901(USA) Key Laboratory of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of Sciences Key Laboratory of Plant Stress Biology College of Life SciencesHenan University

The responses of soil microbes to global warming and nitrogen enrichment can profoundly affect terrestrial ecosystem functions and the ecosystem feedbacks to climate ***,the interactive effect of warming and nitrogen enrichment on soil microbial community is *** this study,individual and interactive effects of experimental warming and nitrogen addition on the soil microbial community were investigated in a long-term field experiment in a temperate steppe of northern *** field experiment started in 2006 and soils were sampled in 2010 and analyzed for phospholipid fatty acids to characterize the soil microbial *** soil chemical properties were also ***-year experimental warming significantly increased soil total microbial biomass and the proportion of Gram-negative bacteria in the ***-term nitrogen addition decreased soil microbial biomass at the 0-10 cm soil depth and the relative abundance of arbuscular mycorrhizal fungi in the *** interactive effect on soil microbes was detected when experimental warming and nitrogen addition were *** microbial biomass positively correlated with soil total C and N,but basically did not relate to the soil C/N ratio and *** results suggest that future global warming or nitrogen enrichment may significantly change the soil microbial communities in the temperate steppes in northern China.

关键词： arbuscular mycorrhizal fungi global warming Gram-negative bacteria nitrogen enrichment microbial biomass microbial community

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全流程干预对脑外科手术重症患者住院期间下肢深静脉血栓的预防价值

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血管与腔内血管外科杂志 2024年第2期10卷 228-232页

作者：万志慧许彬张婷岳震李征南京医科大学第一附属医院(江苏省人民医院)神经外科ICU 江苏南京210000 南京医科大学第一附属医院(江苏省人民医院)神经外科脑血管介入组江苏南京210000

目的探讨全流程干预对脑外科手术重症患者住院期间下肢深静脉血栓(DVT)的预防价值。方法收集2021年1月至2022年12月于南京医科大学第一附属医院(江苏省人民医院)住院并接受手术治疗的146例脑外科手术重症患者的临床资料,并根据住院期间... 详细信息

目的探讨全流程干预对脑外科手术重症患者住院期间下肢深静脉血栓(DVT)的预防价值。方法收集2021年1月至2022年12月于南京医科大学第一附属医院(江苏省人民医院)住院并接受手术治疗的146例脑外科手术重症患者的临床资料,并根据住院期间是否接受了预防下肢DVT的全流程干预措施将患者分为干预组(n=69)和对照组(n=77)。主要观察终点为住院期间患者下肢DVT的发生率,次要终点为患者脑外科专科信息以及住院期间的D-二聚体水平、并发症发生率、病死率和国际标准化比值。结果两组患者疾病类型、清醒的比例和接受开颅手术的比例比较,差异均无统计学意义(P>0.05)。干预组患者术中发生低体温的比例低于对照组患者,术后使用低分子量肝素的比例高于对照组患者,差异均有统计学意义(P0.05)。结论全流程干预可明显降低脑外科手术重症患者住院期间下肢DVT的发生率,同时没有增加住院期间并发症的发生率和病死率。

关键词：全流程干预脑外科重症深静脉血栓预防

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抗衡的张力:对五四时期圣经诠释的寻索

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圣经文学研究 2019年第2期 109-137页

作者：温司卡美国南方卫理公会大学

尽管基督新教的圣经有着其从外而来的源头,20世纪初的中国新教作者们对待权威中译本(尤其是和合本)的态度,犹如与对待儒家经典一样的崇敬。本文所研究的几位新教作家,包括陈崇桂、贾玉铭、吴雷川和赵紫宸,尽管有着不同的神学取向,皆认... 详细信息

尽管基督新教的圣经有着其从外而来的源头,20世纪初的中国新教作者们对待权威中译本(尤其是和合本)的态度,犹如与对待儒家经典一样的崇敬。本文所研究的几位新教作家,包括陈崇桂、贾玉铭、吴雷川和赵紫宸,尽管有着不同的神学取向,皆认定圣经具有益于读者个人德性的道德伦理能量,尤其在他们面向社会和国家的责任的时候。虽然不一定从文字上表明,但在实践上这几位作家皆视圣经有如过往四书五经一样的中国经书。

关键词：陈崇桂贾玉铭吴雷川赵紫宸圣经诠释经学

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Molecular basis of von Hippel-Lindau syndrome in Chinese patients

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Chinese Medical Journal 2011年第2期124卷 237-241页

作者： SIU Wai-kwan MA Ronald Ching-wan LAM Ching-wan MAK Chloe Miu YUEN Yuet-ping lo Fai-man Ivan CHAN Kin-wan LAM Siu-fung LING Siu-cheung TONG Sui-fan SO Wing-yee CHOW Chun-chung TANG Mary Hoi-yin TAM wing-hung CHAN Albert Yan-wo Department of Pathology Princess Margaret Hospital Hong Kong China Department of Medicine & Therapeutics The Chinese University of Hong Kong Prince of Wales Hospital Hong Kong China Department of Pathology Li Ka Shing Faculty of Medicine The University of Hong Kong Queen Mary Hospital Hong Kong China Clinical Genetic Service Department of Health Hong Kong China Department of Medicine and Geriatrics Princess Margaret Hospital Hong Kong China Department of Paediatrics and Adolescent Medicine Princess Margaret Hospital Hong Kong China Department of Obstetrics & Gynaecology Tsan Yuk Hospital Hong Kong China Department of Obstetrics & Gynaecology The Chinese University of Hong Kong Prince of Wales Hospital Hong Kong China

Background Von Hippel-Lindau （VHL） syndrome is an autosomal dominant familial cancer syndrome predisposing the affected individuals to multiple tumours in various *** genetic basis of VHL in Southern Chinese is largely *** this study,we characterized the mutation spectrum of VHL in nine unrelated Southern Chinese *** Nine probands with clinical features of VHL,two symptomatic and eight asymptomatic family members were included in this *** diagnosis was performed twice for one *** probands had only isolated bilateral *** VHL gene was screened for mutations by polymerase chain reaction,direct sequencing and multiplex ligation-dependent probe amplification （MLPA）.Results The nine probands and the two symptomatic family members carried heterozygous germline *** different VHL mutations were identified in the nine *** splicing mutation,NM_000551.2：c.463＋1G〉T,was *** other seven VHL mutations,c.233A〉G [***78Ser],c.239G〉T [***80lle],c.319C〉G [***107Gly],c.481C〉T [***161X],c.482G〉A [***161GIn],c.499C〉T [***167Trp] and an exon 2 deletion,had been previously *** asymptomatic family members were positive for the mutation and the other five tested *** prenatal diagnosis,the fetuses were positive for the *** Genetic analysis could accurately confirm VHL syndrome in patients with isolated tumours such as sporadic phaeochromocytoma or epididymal papillary *** detection in asymptomatic family members allows regular tumour surveillance and early intervention to improve their ***-based diagnosis can have an important impact on clinical management for VHL families.

关键词： von Hippel-Lindau syndrome VHL gene Chinese VHL mutations

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Repeatability and agreement of two anterior segment OCT in myopic patients before implantable collamer lenses implantation

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International Journal of Ophthalmology(English edition) 2020年第4期13卷 625-631页

作者： Xi-Fang Zhang Meng Li Yan Shi Xiu-Hua wan Huai-Zhou wang Beijing Tongren Eye Center Beijing Tongren HospitalCapital Medical UniversityBeijing Institute of OphthalmologyBeijing Ophthalmology and Visual Sciences Key LaboratoryBeijing 100730China

AIM: To evaluate the intra-operator repeatability of time domain and swept-source Fourier domain anterior segment optical coherence tomography(AS-OCT), namely, Visante ASOCT and Casia SS-1000 OCT, in measuring the preoperative parameters of implantable collamer lens(ICL) in myopic eyes, as well as the agreement between the two ***: A total of 97 eyes from 49 myopes were investigated in this prospective case series study. The anterior chamber depth(ACD), angle-to-angle distance(ATA), pupil diameter(PD) and crystalline lens rise(CLR) in all subjects were measured for three times during one session by the same operator. The repeatability was evaluated using the within-subject standard deviation(Sw), repeatability limits and intraclass correlation coefficients(ICC). The agreement between the two systems was evaluated using the Bland-Altman plots and 95% limits of agreement(lo A).RESULTS: The repeatability limits of Visante AS-OCT in measuring ACD, ATA, PD and CLR were 0.099, 0.141, 0.304, and 0.079 mm, respectively. The repeatability limits of Casia SS-1000 OCT in measuring ACD, ATA, PD, and CLR were 0.105, 0.127, 0.357, and 0.082 mm, respectively. Excellent repeatability could be attained in both devices, with the ICC>0.8 for all the measured variables. The interdevice agreement was excellent(P>0.05) for ACD and ATA, but poor(P<0.05) for PD and ***: Good repeatability can be attained by time domain and swept-source Fourier-domain OCT for all the measured variables. Moreover, interdevice agreement analysis suggests that interchangeable measurements between two devices can be achieved for ACD and ATA, but not for PD and CLR;but the differences in measurements were not clinically significant.

关键词： repeatability agreement Visante AS-OCT Casia SS-1000 OCT implantable collamer

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Pseudopolarity of Generalized Matrix Rings over a local Ring

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Communications in Mathematical Research 2015年第3期31卷 211-221页

作者： Yin Xiao-bin Dou wan Du Xian-kun College of Mathematics and Computer Science Anhui Normal University

Pseudopolar rings are closely related to strongly -regular rings, uniquelystrongly clean rings and semiregular rings. In this paper, we investigate pseudopolar-ity of generalized matrix rings Ks（R） over a local ring R. We determine the conditionsunder which elements of Ks（R） are pseudopolar. Assume that R is a local ring. It isshown that A ∈ Ks（R） is pseudopolar if and only if A is invertible or A^2 ∈ J（Ks（R））or A is similar to a diagonal matrix [ u 0 0 j ]; where lu -rj and lj-ru are injectiveand u 2 U（R） and j ∈ J（R）. Furthermore, several equivalent conditions for Ks（R）over a local ring R to be pseudopolar are obtained.

关键词： pseudopolar ring local ring generalized matrix ring

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High precision landing site mapping and rover localization for Chang'e-3 mission

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Science China(Physics,Mechanics & Astronomy) 2015年第1期58卷 139-149页

作者： LIU ZhaoQin DI KaiChang PENG Man wan WenHui LIU Bin LI LiChun YU TianYi wanG BaoFeng ZHOU JianLiang CHEN HongMin State Key Laboratory of Remote Sensing Science Institute of Remote Sensing and Digital Earth (RADI) Chinese Academy of Sciences Beijing Aerospace Control Center (BACC)

This paper presents the comprehensive results of landing site topographic mapping and rover localization in Chang’e-3 ***-precision topographic products of the landing site with extremely high resolutions(up to 0.05 m)were generated from descent images and registered to CE-2 *** DEM and DOM with 0.02 m resolution were produced routinely at each waypoint along the rover *** lander location was determined to be(19.51256°W,44.11884°N,-2615.451 m)using a method of DOM *** order to reduce error accumulation caused by wheel slippage and IMU drift in dead reckoning,cross-site visual localization and DOM matching localization methods were developed to localize the rover at waypoints;the overall traveled distance from the lander is 114.8 m from cross-site visual localization and 111.2 m from DOM matching *** latter is of highest accuracy and has been verified using a LRO NAC image where the rover trajeactory is directly *** CE-3 mission operations,landing site mapping and rover localization products including DEMs and DOMs,traverse maps,vertical traverse profiles were generated timely to support teleoperation tasks such as obstacle avoidance and rover path planning.

关键词： Chang'e-3 Yutu rover landing site mapping rover localization descent camera navigation camera

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β-乳球蛋白在磁化水中的水合作用:磁化处理对水分子缔合构造及蛋白质水合特性的影响(英文)

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物理化学学报 2010年第2期26卷 304-310页

作者：和劲松杨宏伟蔡然罗之纲祝万鹏清华大学环境科学与工程系北京100084 康师傅控股有限公司中央研究所天津300457

为探讨蛋白质在磁化水中的水合作用,首先利用粘度测定及氧17核磁共振(17O-NMR)对经静磁场(MF)处理不同有效时间(teff)后的纯水进行了分析,进一步又利用差示扫描热量计(DSC)及NMR对溶解于磁化水的β-乳球蛋白(β-Lg)的水合特性进行了分析... 详细信息

为探讨蛋白质在磁化水中的水合作用,首先利用粘度测定及氧17核磁共振(17O-NMR)对经静磁场(MF)处理不同有效时间(teff)后的纯水进行了分析,进一步又利用差示扫描热量计(DSC)及NMR对溶解于磁化水的β-乳球蛋白(β-Lg)的水合特性进行了分析.随teff的增加,水分子的内能不断减小,处于氢键结合状态的水分子的比例不断增加.结果表明MF处理促进了水分子缔合结构的形成,这一点可能与氢键的形成有关.随teff的增加,β-Lg表面水分子的运动性没有明显变化,但β-Lg溶液中非自由结合水的含量不断增加.说明β-Lg的水合作用与水分子的缔合分布有关,该分布依存于水分子的氢键状态并可通过磁场处理加以改变.

关键词：磁化氢键水分子缔合蛋白质水合

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Using MRE to Quantitatively Measure the Effects of Acupuncture on Muscle Stiffness

Using MRE to Quantitatively Measure the Effects of Acupunctu...

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第十四届全国中药和天然药物学术研讨会

作者： Derek Hang Chun Kwok Geng Li Jason wan Man Fung Kiu Ngai So Ye Zhang Ying Zheng Sun Yiu Chong Simon sze Man Yeung Qi Yuan Ma Time Medical Limited

＜正＞Background Magnetic Resonance Elastography（MRE）is a non-invasive technique that quantitatively measures tissue stiffness[1].It consists of generating shear waves in tissue;acquiring MR images of the induced sh...

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