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All-optical regeneration of polarization of a 40 Gbit/s return-to-zero telecommunication signal[Invited]

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Photonics research 2013年第3期1卷 115-123页

作者： j.Fatome D.Sugny S.Pitois P.morin m.Guasoni A.Picozzi H.r.jauslin C.Finot G.millot S.Wabnitz Laboratoire Interdisciplinaire Carnot de Bourgogne(ICB) UMR 6303 CNRS/Universitéde BourgogneDijonFrance Department of Information Engineering Universitàdi BresciaBresciaItaly

We report all-optical regeneration of the state of polarization of a 40 Gbit∕s return-to-zero telecommunication sig*** device discussed here consists of a 6.2-km-long nonzero dispersion-shifted fiber,with low polarization mode dispersion,pumped from the output end by a backward propagating wave coming from either an external continuous source or a reflection of the *** initially scrambled signal acquires a degree of polarization close to 100%toward the polarization generator ***-optical regeneration is confirmed by means of polarization and bit-error-rate measurements as well as real-time observation of the eye *** show that the physical mechanism underlying the observed four-wave-mixing-based polarization attraction phenomenon can be described in terms of the geometric approach developed for the study of Hamiltonian singularities.

关键词： polarization communication signal

Functional Analysis of Chemometric Data

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Open journal of Statistics 2013年第5期3卷 334-343页

作者： Ana m. Aguilera manuel Escabias mariano j. Valderrama m. Carmen Aguilera-morillo Department of Statistics University of Granada Granada Spain

The objective of this paper is to present a review of different calibration and classification methods for functional data in the context of chemometric applications. In chemometric, it is usual to measure certain parameters in terms of a set of spectrometric curves that are observed in a finite set of points (functional data). Although the predictor variable is clearly functional, this problem is usually solved by using multivariate calibration techniques that consider it as a finite set of variables associated with the observed points (wavelengths or times). But these explicative variables are highly correlated and it is therefore more informative to reconstruct first the true functional form of the predictor curves. Although it has been published in several articles related to the implementation of functional data analysis techniques in chemometric, their power to solve real problems is not yet well known. Because of this the extension of multivariate calibration techniques (linear regression, principal component regression and partial least squares) and classification methods (linear discriminant analysis and logistic regression) to the functional domain and some relevant chemometric applications are reviewed in this paper.

关键词： Functional Data Analysis B-Splines Functional Principal Component regression Functional Partial Least Squares Functional Logit models Functional Linear Discriminant Analysis Spectroscopy NIr Spectra

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地质图详释

地质图详释

作者： m.j.·理卡德(m.j. rickard)

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化学实验

化学实验

作者： m.j.·西恩科(m.j. Sienko)

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结构动力学

结构动力学

作者： j.m.·比格斯(j.m. Biggs)

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西班牙抗结核药物所致严重肝毒性反应

结核与肺部疾病杂志 2005年第3期8卷 90-95页

作者： j. r. Tost r. Vidal j. Cayla D. Diaz-Cabanela A. jimenez j. m. Broquetas 马玙 Hospital de Terrassa Barcelona Departamento de Medicina Universidad Autonoma de Barcelona Barcelona Hospital Valle de Hebron Barcelona Agenda de Salut Publica de Barcelona Barcelona CHU juan Canalejo La Coruna Unitat de malalties del Torax Drassanes Barcelona Hospital del mar Barcelona Spain Study Group for Severe Hepatotoxicity due to Anti-tuberculosis Drugs in Spain

目的:判定抗结核药物引起的严重肝毒性反应的发生频率及发生急性肝功能衰竭或死亡的预报指标。方法﹕西班牙肺科学会成员对1997-2001年18家医院的资料进行回顾性研究。严重肝毒性反应界定为,无临床症状者转氨酶有10倍升高或胆汁郁滞参数... 详细信息

目的:判定抗结核药物引起的严重肝毒性反应的发生频率及发生急性肝功能衰竭或死亡的预报指标。方法﹕西班牙肺科学会成员对1997-2001年18家医院的资料进行回顾性研究。严重肝毒性反应界定为,无临床症状者转氨酶有10倍升高或胆汁郁滞参数3倍增加;有肝炎症状者则为肝功能参数增加或发生肝功能衰竭。采用logistic 回归分析计算比值比(Or)及其95%可信区间(CI)研究其预报因素。结果﹕3510 例中共有166 例发生肝毒性反应,其中90 例(2.56%)为活动性结核病治疗所致。11 例(10.3%)发生急性肝功能衰竭,其中3 例进行了肝移植。总体病死率为4.7%(5 例,其中3 例与饮酒或肝毒性药物有关)。预后不良的预报指标为总胆红素>2mg/dl(Or=9.4 , 95%CI : 1.0-85.5) 及血清肌肝>1.5mg/dl(Or=32.1,95%CI:2.4-424.6)。结论﹕抗结核药物引起的严重肝毒性反应死亡率较高。必须进行经常性的临床检查及临床实验室观察以预防其发生。

关键词：结核病异烟肼利福平吡嗪酰胺重症肝炎急性肝功能衰竭抗结核药物毒性反应西班牙 logistic回归分析药物所无临床症状预报因素活动性结核病

Performance and playability of experimental low-input coarsetextured zoysiagrass in multiple climates

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Grass research 2021年第1期1卷 84-95页

作者： ross C.Braun Susana r.milla-Lewis Esdras m.Carbajal Brian m.Schwartz Aaron j.Patton Department of Horticulture and Landscape Architecture Purdue University625 Agriculture Mall Dr.West LafayetteIN 47907USA Department of Crop and Soil Sciences North Carolina State UniversityRaleighNC 27695-7620USA Department of Crop&Soil Sciences University of Georgia2360 Rainwater Rd.TiftonGA 31793USA

A 3-year experiment was conducted to evaluate the performance and playability of 24 coarse-textured zoysiagrass(Zoysia ***.)experimental genotypes in comparison to five commercially available cultivars maintained as a low-maintenance turf across multiple climates(Indiana,North Carolina,Georgia,Arizona,and California).Following establishment in 2018,plots were maintained under low-maintenance regimes and evaluated for quality,density,uniformity,color,winterkill damage,drought resistance,and golf ball lie in 2019 and 2020.A turf performance index(TPI)was calculated for each treatment at each site,which represented the number of times the treatment occurred in the top statistical *** unique climate for each site led to differences in TPI *** instance,the arid climates of Arizona and California resulted in distinct differences in performance among treatments compared to the other ***,consistencies in performance across sites were also *** example,the 2018−2019 winter resulted in winterkill differences among entries in both Indiana and North Carolina,which led to some similarities in ***,the southern humid climates of North Carolina and Georgia produced consistencies in overall *** the minimal inputs and the hot-humid or arid climates evaluated in this study,all of the check cultivars were some of the poorest performing treatments,which clearly illustrates there is a need for breeding programs to develop zoysiagrass genotypes for these ***,experimental lines that exhibited excellent persistence under these conditions were identified indicating the genetic potential for wider adaptation to lower input environments exists within the species.

关键词： treatment winter maintained

rEGrESSION OF ANTErIOr SEGmENT NEOVASCULArISATION FOLLOWING CArOTID ENDArTErECTOmY IN A PA-TIENT SUFFErING FrOm OCULAr IS-CHAEmIC SYNDrOmE

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国际眼科杂志 2003年第1期3卷 34-35页

作者： C.Gutierrez m.moreno j.m.Hernaez F.munoz ramon Y Caial Hospital Spain Ramon Y Caial Hospital SpainRamon Y Caial Hospital SpainRamon Y Caial Hospital Spain

Purpose: To report a case of bilateral regression of anterior segment neovascularisation after carotid endarterectomy in a patient with bilateral ocular ischaemic syndrome (OIS). Patient and methods: Case report. A 61 year-old man suffering from bilateral ocular ischaemic syndrome causing iris neovascularisation (NVI) and neovascular glaucoma (NVG), was planned for bilateral panretinal photocoagulation (PrP) and endarterectomy. PrP was technically only possible in his right eye, while endarterectomy was performed in both carotids. results: Bilateral complete NVI regression was observed a month after surgery. Conclusion: In some OIS uveal ischaemia could be the m.j.r.responsible for NVI. Carotid endarterectomy benefits patients who have more than 70% stenosis and improves ocular blood flow, so it should be considered in patients suffering OIS with NVI unre- spective of other cerebral ischaemic symptoms.

关键词：双侧眼缺血颈动脉内膜切除术后前段新生血管退化青光眼

A Late 20th Century European Climate Shift: Fingerprint of regional Brightening?

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Atmospheric and Climate Sciences 2013年第3期3卷 291-300页

作者： A. T. j. de Laat m. Crok Amsterdam The Netherlands royal Netherlands meteorological Institute (KNmI) De Bilt The Netherlands

We investigate the spatial extent of a statistically highly significant shift in atmospheric temperatures over Europe around 1987-1988 using a boot-strap change point algorithm. According to this algorithm, this change point (average warming of about one degree Celsius) is statistically highly significant (p > 99.9999%). The change point is consistently present in satellite and surface temperature measurements as well as temperature re-analyses and ocean heat content over most of Western Europe. We also find a connection with parts of the North Atlantic Ocean and eastern Asia. Although the time of change coincides with the North Atlantic Oscillation (NAO) going from negative to positive, the consistent warmer temperatures throughout the decades after 1987-1988 does not coincide with a persistent shift of the NAO, as it returns to a neutral/negative in the 1990’s. Furthermore, the shift does not coincide with any other known mode of multidecadal internal climate variability. We argue that the notion of a shift is “spurious”, i.e. the result of a fast change in Europe from dimming to brightening combined with an accidental sequence of cold (negative NAO) and warm (positive) NAO years during this period. The “shift” could therefore be considered as a fingerprint of European brightening during the last few decades.

关键词： Temperature Climate Shift Brightening