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| 1 | Weak minimum aberration and maximum number of clear two-factor interactions in 2_(IV)^(m-p)designs显示文摘 | YANG Guijun,LIU Minqian & ZHANG Runchu Department of Statistics, Tianjin University of Finance and Economics, Tianjin 300222, China Department of Statistics, School of Mathematical Sciences and LPMC, Nankai University, Tianjin 300071, China | 2005 | Science China Mathematics2005，48，11： | 12 |
| 2 | Some results on 4~m2~n designs with clear two-factor interaction components显示文摘Clear effects criterion is one of the important rules for selecting optimal fractional factorial designs,and it has become an active research issue in recent years.Tang et al.derived upper and lower bounds on the maximum number of clear two-factor interactions(2fi's) in 2n-(n-k) fractional factorial designs of resolutions III and IV by constructing a 2n-(n-k) design for given k,which are only restricted for the symmetrical case.This paper proposes and studies the clear effects problem for the asymmetrical case.It improves the construction method of Tang et al.for 2n-(n-k) designs with resolution III and derives the upper and lower bounds on the maximum number of clear two-factor interaction components(2fic's) in 4m2n designs with resolutions III and IV.The lower bounds are achieved by constructing specific designs.Comparisons show that the number of clear 2fic's in the resulting design attains its maximum number in many cases,which reveals that the construction methods are satisfactory when they are used to construct 4m2n designs under the clear effects criterion. | ZHAO ShengLi ZHANG RunChu LIU MinQian | 2008 | Science China Mathematics2008，51，7： | 7 |
| 3 | Bounds on the maximum numbers of clear two-factor interactions for 2^((n1+n2)-(k1+k2)) fractional factorial split-plot designs显示文摘Fractional factorial split-plot (FFSP) designs have an important value of investigation for their special structures.There are two types of factors in an FFSP design: the whole-plot (WP) factors and sub-plot (SP) factors,which can form three types of two-factor interactions:WP2fi,WS2fi and SP2fi.This paper considers FFSP designs with resolution Ⅲ or Ⅳ under the clear effects criterion.It derives the upper and lower bounds on the maximum numbers of clear WP2fis and WS2fis for FFSP designs,and gives some methods for constructing the desired FFSP designs.It further examines the performance of the construction methods. | ZI Xuemin ZHANG Runchu LIU Minqian | 2006 | Science China Mathematics2006，49，12： | 7 |
| 4 | Minimum secondary aberration fractional factorial split-plot designs in terms of consulting designs显示文摘It is very powerful for constructing nearly saturated factorial designs to characterize fractional factorial (FF) designs through their consulting designs when the consulting designs are small. Mukerjee and Fang employed the projective geometry theory to find the secondary wordlength pattern of a regular symmetrical fractional factorial split-plot (FFSP) design in terms of its complementary subset, but not in a unified form. In this paper, based on the connection between factorial design theory and coding theory, we obtain some general and unified combinatorial identities that relate the secondary wordlength pattern of a regular symmetrical or mixed-level FFSP design to that of its consulting design. According to these identities, we further establish some general and unified rules for identifying minimum secondary aberration, symmetrical or mixed-level, FFSP designs through their consulting designs. | Al Mingyao ZHANG Runchu | 2006 | Science China Mathematics2006，49，4： | 3 |
| 5 | Split-plot designs with general minimum lower-order confounding显示文摘Split-plot designs have been widely used in industrial experiments.Up to now,most methods for choosing this kind of designs are based on the minimum aberration (MA) criterion.Recently,by introducing a new pattern,called aliased effect-number pattern (AENP),Zhang et al.proposed a general minimum lowerorder confounding (denoted by GMC for short) criterion and established a general minimum confounding (also denoted by GMC for saving notations) theory.It is proved that,the GMC criterion selects optimal designs in a more elaborate manner than the existing ones,and when an experimenter has a prior about the importance ordering of factors in experiments the GMC designs are better than other optimal designs.In this paper we extend the GMC criterion to the split-plot design case and give a GMC-FFSP criterion for ranking split-plot designs.Some comparisons of the new criterion with the MA-MSA-FFSP criterion are given,and the optimal 32-run split-plot designs up to 14 factors under the two criteria are tabulated for comparison and application. | WEI JiaLin 1,4,YANG JianFeng 1,LI Peng 3 & ZHANG RunChu 1,2,1 School of Mathematical Sciences and LPMC,Nankai University,Tianjin 300071,China 2 KLAS and School of Mathematics and Statistics,Northeast Normal University,Changchun 130024,China 3 School of Mathematical Sciences,Capital Normal University,Beijing 100037,China 4 School of Sciences,Tianjin University of Commerce,Tianjin 300134,China | 2010 | Science China Mathematics2010，53，4： | 2 |
| 6 | Empirical likelihood ratio test for a change-point in linear regression model显示文摘 | Liu Yukun Zou Changliang Zhang Runchu | 2008 | Communications in Statistics-Theory and Methods2008，37，16： | 1 |
| 7 | sn-m designs containing clear main effects or clear two-factor interactions显示文摘 | Ai Mingyao Zhang Runchu | 2004 | Statistics and Probability Letters2004，69，： | 1 |
| 8 | Unbiased Quasi-regression显示文摘伪回归,由在计算机实验产生的问题激发了,主要加快评估的焦点。然而,它的理论性质是未经勘探的全身的联盟者。这篇论文证明伪回归是不偏的,为参数评价而是它的强壮的会聚的 andasymptotic 正常为试穿被偏导弯。而且,调用不偏的伪回归的一个新方法被建议。除了保留参数评价的 aboveasymptotic 行为,不偏的伪回归为曲线的试穿是不偏的。 | Guijun YANG Lu LIN Runchu ZHANG | 2007 | Chinese Annals of Mathematics,Series B2007，28，2： | 1 |
| 9 | s^m-n designs containing clear main effects or clear two-factor interactions显示文摘 | Ai Mingyao Zhang Runchu | 2004 | Statist Probab Letters2004，69，： | 1 |
| 10 | Sn-m designs containing clear main effects of clear two-factor interactions显示文摘 | AI Mingyao ZHANG Runchu | 2004 | Statistics & Probability Letters2004，69，1： | 1 |
| 11 | Cross-species recognition and molecular basis of SARS-CoV-2 and SARS-CoV binding to ACE2s of marine animals显示文摘Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)has an extremely broad host range that includes hippopotami,which are phylogenetically closely related to whales.The cellular ACE2 receptor is one of the key determinants of the host range.Here,we found that from several marine mammals and hippopotami could efficiently bind to the receptor-binding domain(RBD)of both SARS-C oV and SARS-C oV-2 and facilitate the trans duction of SARS-C oV and SARS-C oV-2 pseudo viruses into ACE2-expressing cells.We further resolved the cryo-electron microscopy complex structures of the minke whale ACE2 and sea lion ACE2,respectively,bound to the RBDs,revealing that they have similar binding modes to human ACE2 when it comes to the SARS-C oV-2 RBD and SARS-C oV RBD.Our results indicate that marine mammals could potentially be new victims or virus carriers of SARS-C oV-2,which deserves further careful investigation and study.It will provide an early warning for the prospective monitoring of marine mammals. | Shihua Li Ruirui Yang Di Zhang Pu Han Zepeng Xu Qian Chen Runchu Zhao Xin Zhao Xiao Qu Anqi Zheng Liang Wang Linjie Li Yu Hu Rong Zhang Chao Su Sheng Niu Yanfang Zhang Jianxun Qi Kefang Liu Qihui Wang George F.Gao | 2022 | National Science Review2022，9，9： | 0 |
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