Victor Yohai
Victor Jaime Yohai, Turkish-born Jewish Argentine statistician (22 February 1939 – Considered a world leader on robust statistics With J.D. Gonzalez & R. Fraiman & R.H. Zamar. Robust model based clustering (2021) (proposed a new class of robust and Fisher-consistent estimators for mixture models) With J. Molina, M. Sued & M. Valdora. Robust doubly protected estimators for quantiles with missing data (2017) With J. Molina, M. Sued & M. Valdora. A robust approach for location estimation in a missing data setting (2015) With C. Agostinelli & R. Fraiman. Robust estimation for multivariate data under the independent contamination model (2012) (introduced composite likelihood M-estimates, a new kind of robust procedures for estimating the mean vector and covariance matrix for multivariate normal observations) With J.G. Adrover. A new projection estimate for multivariate location with minimax bias. J.Multiv. Analysis 101 (6):1400-11, 2010 With D. Peña. A Dirichlet random coefficient regression model for estimating attribute weights in quality indicators. J. Statis. Plann. Inference 136:942-61, 2006 With M. Salibian Barrera. A fast algorithm for S-regression estimates. J. Comput. Graph Statis. 15:414-27, 2006 With F. Alqallaf, S. Van Aelst & R.H. Zamar. A model of contamination in multivariate data (2005) With M. Garcia Ben. Quantile-quantile plot for deviance residuals in the generalized linear model. J. Comput. Graph. Statis. 13:36-47, 2004 With D. Gervini. A class of robust and fully efficient regression estimators. Ann. Statis 30:583-616, 2002 With N. Ferretti, D. Kelmansky & R.H. Zamar. A class of locally and globally robust regression estimates. J. Am. Statis. Assoc. 94:174-88, 1999 With D. Peña. A fast procedure for outlier diagnostics in large regression problems. J. Am. Statis. Assoc. 94:434-45, 1999 With J. Meloche, L.A. Garcia Escudero, A. Gordaliza, X. He, R. Maronna, R. Fraiman et al. Multivariate L-estimation. Test 8(2):255-317, 1999 (defined a new notion of order statistics and ranks for multivariate data based on density estimation) With D. Peña Sanchez de Rivera. A procedure for robust estimation and diagnostics in regression (1996) With A. Bianco & M. Garcia Ben. Robust procedures for regressiuon models with ARIMA errors (1996) With R. Maronna. Bias-robust estimates of regression based on projections. The Ann. Statis. (1993) (a new class of bias-robust estimates of multiple regression) With R. Maronna. A new class of bias-robust estimates of regression (1993) With D.M.Kelmansky & N.E. Ferretti. A goodness of fit test based on ranks for ARMA models (1992) With A.G. Bruce & R.D. Martin. Two new robust methods for time series. Comput. Statis (1992) With W. Stahel & R.H. Zamar. A procedure for robust estimation and inference in regression (1991) With R. Maronna. A bivariate test for detection of systematic change in mean, J. Am. Statis. Assoc. 73:640-5, 1978 PROPOSED / INTRODUCED With Mariela Sued a new concept of differentiabilty of statistical functions (2013) With D. Gervini the robust and efficient weighted least square estimator (REWLSE) (2002) With D. Gervini the idea of an adaptive univariate filter or Gervini-Yohai filter (2002) MM estimator (1987) With Rousseeuw the S estimation class (1984) With R.H. Zamar the concept of tau-scale (1988) MS estimator (2000) OTHER CONTRIBUTIONS / BIBLIOGRAPHY With E. Smucler. Robust and sparse estimators for linear regression models. Comput. Statis. Data Analysis 111:1166-30, 2017 With M. Amiguet, A. Marazzi & M. Valdora. Robust estimators for generalized linear models with a dispersion parameter (2017) With D. Peña. Generalized dynamic principal components. J. Amer. Statis. Assoc. 111(515):1121-31, 2016 With C. Agostinelli. Composite robust estimators for linear mixed models. J. Am. Statis. Assoc. 111(516): 1764-74, 2016 With M. Salibian Barrera & S. Van Aelst. Robust tests for linear regression models based on t-estimates. Comp. Statis Data Analysis 93:436-55, 2016 With C. Agostinelli & A. Marazzi. Robust estimators of the generalized log-gamma distribution. Technometrics 56(1):92-101, 2014 With N. Muller. Robust estimation for vector autoregression models. Comput. Statis. Data Analysis 65:68-79, 2013 With E.E. Alvarez. M-estimators for isotonic regression. J. Statis. Plann. Inference 142(8):2351-68, 2012 With A. Bergesio. Projection estimators for generalized linear models. J. Amer. Statis. Assoc. 106(494):661-71, 2011 With M. Svarc & R.H. Zamar. Optimal bias robust M-estimates of regression (2002) With S. Hernandez. Locally and globally robust estimators in regression (1999) With O. Bustos the class of estimates based on residual auto-covariances (RA-estimates) for the parameters of an ARMA model EPONYMY Yohai-Zamar locally optimal estimate Yohai estimator Bianco-Yohai estimator Peña-Yohai initial estimator for robust S estimators of the regression HONOURS Mahalanobis Award, International Statistical Institute (2012)
Shyam Lal Yadava
Shyam Lal Yadava, Indian mathematician (Ghanshyampur, Uttar Pradesh 05 July 1953 – 07 June 2007) Regarded as international expert on partial differential equations Obtained relevant results for semi-linear elliptic equations satisfying critical growth conditions on the non linearity with various types of boundary conditions Obtained relevant connection between the concentration points of minimal energy solutions and the critical points of the mean curvature of the boundary of the domain
Nobuko Yoshida
Nobuko Yoshida, Brazilian parasitologist (c.1948 From Japanese ancestry Described Herpetomonas mariadeanei 1978 with Freymuller & Wallace With R.S. Nussenzweig, P. Potocnjak, V. Nussenzweig & M. Aikawa. Hybridoma produces protective antibodies against the sporozoite stage of malaria parasite. Science 207(1):71-3, 1980 CONTRIBUTIONS A macromolecule-free partially defined medium for Trypanosoma cruzi. J. Protozool. 22:128-30, 1975 With E.P. Camargo, D.M.Mattei & Z. Caulada, Staphylococcal adherence to trypanosomes exposed to immune sera as a method for diagnosis of Chagas disease. Trans. Royal Soc. Trop. Med. Hyg. 77:825-8, 1983 With M.C. Fernandes, M. Cortez, K. Yoneyama, A. Straus & R.A. Mortara. Novel strategy in Trypanosoma cruzi cell invasion: implication of cholesterol and host cell microdomains. Intern. J. Parasit. 37:1431-41, 2007 With F.Y. Maeda, R.M. Alves, C. Cortez & F.M.Lima. Characterization of the infective properties of a new genetic group of Trypanosoma cruzi associated with bats. Acta Tropica 120:231-7, 2011 With N.O. Martins, R.T. Souza, E.M. Cordero, D.C. Maldonado, C. Cortez et al. Molecular characterization of a novel family of Trypanosoma cruzi surface membrane proteins (TcSMP) involved in mammalian host cell invasion. PLos Neglected Tropical Diseases 9:4216, 2015
Longping Yuan
Longping Yuan, Chinese agronomist and plant breeder (Beijing 07 September 1930 – Changsha 22 May 2021) Obtained the Nan-you nº2, the world’s first high yield hybrid rice strain (1973) Developed numerous new strains of “super hybrid rice” that produced almost 10 tons per hectare Discovered how to achieve heterosis in rice (a self-fertilizing plant), developing the first male sterile line rice Proposed super-high yielding breeding of hybrid rice by a combination of ideotype and heterosis breeding With Xiangyuan An developed an universal dominant male-sterility system in multiple plant species by using a maize male sterility gene (ZnMs7), a promising technology for hybrid seed production in crops With X. An, B. Ma, M.J. Duan, Z.Y. Dong, R. Liu et al. Molecular regulation of ZnMS7 required for maize male fertility and development of a dominant male-sterility system in multiple species. Proceed. Nat. Acad. Sciences 117(38), 2020 METHODS With S.F. Song, T.K. Wang, Y.X. Li, J. Hu, R.F. Kan et al. A novel strategy for creating a new system of third-generation hybrid rice technology using a cytoplasmic sterility gene and a genic male-sterility gene. Plant Biotechn. J. 19(2), 2020 With Y. Xia, N. Tang, Y. Hu. D. Li, S.C. Li et al. A method for mechanized hybrid rice seed production using female sterile rice. Rice 12(1), 2019 Three line method for indica hybrid rice (proposed in 1966; published in 1973) Two line method for hybrid rice (proposed in 1980s; published in 1995) Super hybrid rice technology system (1996-7) A series of yield-boosting techniques such as the determination of seeding dates, adjustment of flowering stages, supplementary pollination and application of gibberellic acid in Key techniques for high production of hybrid rice seeds. Yichuan Yuzhong 1:4-5, 1977 HYBRIDS Nan-you nº2 (1974) V64 (1984) with M.Y. Sun V48 (1984) with Z.G. Song V49 (1986) with X.L. Deng V438 (1993) with Z.G. Song V647 (1994) with X.L. Deng PARENTAL LINES Er-Jiu-Nan nº 1 A(B) 1972 Ce64 (1985) with M.Y. Sun Ce49 (1986) with X.L.Deng Ce48 (1987) with Z.G. Song Pei Ai 64s (1991) with X.H. Luo et al 438 (1993) with Z.G. Song 647 (1994) with X.L. Deng Ce64s (1996) with X.Q. Li et al Xiang125s (1996) with H.Q. Yin et al. Lin-Lun (1996) with Y.C. Yan HONOURS UNESCO Science Prize (1987) Rank Prize for Agronomy and Nutrition, London (1988) Alan Shawn Feinstein World Hunger Award for Research and education, Brown University, United States (1993) Fukui International Koshikari Rice Prize (1998) Wolf Prize in Agriculture and World Food Prize (2004) Asteroid 8117 Yuanlongping
Le Yang
Le Yang or Lo Yang, Chinese mathematician (Nantong, Jiangsu Province 10 November 1939 – Introduced the concept of deficient functions and proved its countability With Guanghou Zhang introduced the concept of defects and singularity directions in distribution theory Obtained the precise estimate of total deficiency for any meromorphic function with its derivative With G. Zhang first established the numbers of deficient values and Borel directions of entire and meromorphic functions (1970s) Established new criteria for normality Established relationship between normal families and fixed points as well as that between normal families and different polynomials Established the necessary and sufficient conditions for the distribution of singular directions Found a new kind of singular directions With W.K. Hayman solved a conjecture of Littlewood EPONYMY Le Yang inequality Yang-Zhang theorem (relation between deficit value and singular directions) 1977 Yang-Zhang inequality Yang relation of deficiencies Yang problem in derivative functions with maximal deficiency sum LINKS http://www.hlhl.org.cn/english/showsub.asp?id=251
Kuan Mu Yao
Kuan Mu Yao, Taiwanese sanitary engineer (Zhuji, Zhejiang Province 25 September 1923 – 2009) Influence of suspended particle size on the transport aspect of water filtration. Master Dissertation (1968) Defined basic formulae for high rate settlers Theoretical study of high-rate sedimentation. J. Water Poll. Control. Feder. 42(2):218-28, 1970 Design of high rate settlers. J. Environ. Engin. Div. ASCE 99(2):621-37, 1970 Presented a conceptual model for water and waste water filtration processes and the first water filtration model that successfully predicts the initial collection efficiency (Yao-Habibian filtration model) With M.T. Habibian & C.R. O’Melia. Water and waste water filtration. Concepts and applications. Environ. Sci. Technol. 5(11):1105-12, 1971 Presented a design chart and a design procedure for applying the critical shear stress approach for the hydraulic design of self-cleaning circular sewers Established Yao formula and defined a term (s) for assessing the performance of a settler Sewer line design based on critical shear stress. J. Environ. Engineer. 100(2):507, 1974 Functional design of sanitary sewers. J. Water Poll. Control Feder. 48(7):1772-8, 1976