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A Novel Genetic Algorithm for Global Optimization

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Acta Mathematicae Applicatae Sinica 2020年第2期36卷 482-491页

作者： chun-feng WANG Kui LIU Pei-ping SHEN College of Mathematics and Information.Henan Normal University Xinxiang 453007China Henan Engineering Laboratory for Big Data Statistical Analysis and Optimal Control School of Mathematics and Information SciencesHenan Normal UniversityXinxiang 453007 China

This paper presents a novel genetic algorithm for globally solving un-constraint optimization *** this algorithm,a new real coded crossover operator is proposed ***,for improving the convergence speed and the searching ability of our algorithm,the good point set theory rather than random selection is used to generate the initial population,and the chaotic search operator is adopted in the best solution of the current *** experimental results tested on numerical benchmark functions show that this algorithm has excellent solution quality and convergence characteristics,and performs better than some algorithms.

关键词： genetic algorithm good point set chaotic search continuous optimization

Signatures of positive selection for local adaptation of African native cattle populations:A review

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Journal of Integrative Agriculture 2023年第7期22卷 1967-1984页

作者： Wondossen AYALEW wu Xiao-yun Getinet Mekuriaw TAREKEGN CHU Min LIANG chun-nian Tesfaye SISAY TESSEMA YAN ping Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau Ministry of Agriculture and Rural Affairs/Key Laboratory of Yak Breeding EngineeringLanzhou Institute of Husbandry and Pharmaceutical SciencesChinese Academy of Agricultural SciencesLanzhou 730050P.R.China Department of Animal Production and Technology Wolkite UniversityWolkite P.O.Box 07Ethiopia Institute of Biotechnology Addis Ababa UniversityAddis Ababa P.O.Box 1176Ethiopia Scotland’s Rural College(SRUC) Roslin Institute BuildingUniversity of EdinburghEdinburgh EH259RGUnited Kingdom

Cattle are central to the lives and diverse cultures of African *** has played a crucial role in providing valuable protein for billions of households and sources of income and employment for producers and other actors in the livestock value *** long-term natural selection of African cattle typically signals signatures in the genome,contributes to high genetic differentiations across *** has enabled them to develop unique adaptive traits to cope with inadequate feed supply,high temperatures,high internal and external parasites,and ***,these unique cattle genetic resources are threatened by indiscriminate cross-breeding,breed replacements with exotic cosmopolitan breeds,and climate change *** there are no functional genomics studies,recent advancements in genotyping and sequencing technologies have identified and annotated limited functional genes and causal variants associated with unique adaptive and economical traits of African cattle *** genome-wide variants serve as candidates for breed improvement and support conservation efforts for endangered cattle breeds against future climate ***,this review plans to collate comprehensive information on the identified selection footprints to support genomic studies in African cattle to confirm the validity of the results and provide a framework for further genetic association and QTL fine mapping studies.

关键词： adaptive trait African cattle production traits reproduction traits

An efficient TILLING platform for cultivated tobacco

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Journal of Integrative Plant Biology 2020年第2期62卷 165-180页

作者： Yu-Long Gao Xue-Feng Yao Wen-Zheng Li Zhong-Bang Song Bing-wu Wang Yu-ping wu Jun-Li Shi Guan-Shan Liu Yong-ping Li chun-Ming Liu Key Laboratory of Tobacco Biotechnological Breeding National Tobacco Genetic Engineering Research CenterYunnan Academy of Tobacco Agricultural SciencesKunming 650021China Key Laboratory of Plant Molecular Physiology Institute of Botanythe Chinese Academy of SciencesBeijing 100093China The University of Chinese Academy of Sciences Beijing 100049China Tobacco Research Institute the Chinese Agriculture Academy of SciencesQingdao 266101China Institute of Crop Sciences the Chinese Academy of Agricultural SciencesBeijing 100081China

Targeting-induced local lesions in genomes(TILLING)is a powerful reverse-genetics tool that enables high-throughput screening of genomic variations in *** TILLING has been developed for many diploid plants,the technology has been used in very few polyploid species due to their genomic ***,we established an efficient capillary electrophoresis-based TILLING platform for allotetraploid cultivated tobacco(Nicotiana tabacum L.)using an ethyl methanesulfonate(EMS)-mutagenized population of 1,536 *** optimized the procedures for endonuclease preparation,leaf tissue sampling,DNA extraction,normalization,pooling,PCR amplification,heteroduplex formation,and capillary *** a test screen using seven target genes with eight PCR fragments,we obtained 118 *** mutation density was estimated to be approximately one mutation per 106kb on *** analyses showed that mutations in two heavy metal transporter genes,HMA2S and HMA4T,led to reduced accumulation of cadmium and zinc,which was confirmed independently using CRISPR/Cas9 to generate knockout *** results demonstrate that this powerful TILLING platform(available at http://***)can be used in tobacco to facilitate functional genomics applications.

关键词： An efficient TILLING platform cultivated tobacco HMA

Hot deformation behavior and microstructure evolution of Be/2024Al composites

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International Journal of Minerals,Metallurgy and Materials 2023年第11期30卷 2245-2258页

作者： Yixiao Xia Zeyang Kuang ping Zhu Boyu Ju Guoqin Chen ping wu Wenshu Yang Gaohui wu School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China Key Laboratory of Advanced Structure-Function Integrated Materials and Green Manufacturing Technology School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China Key Laboratory of Advanced Science and Technology on High Power Microwave Xi'an 710024China Northwest Institute of Nuclear Technology Xi'an 710024China

The high temperature compression test of Be/2024Al composites with 62wt%Be was conducted at 500–575℃ and strain rate of0.003–0.1 s^(-1).The strain-compensated Arrhenius model and modified Johnson–Cook model were introduced to predict the hot deformation behavior of Be/2024Al *** result shows that the activation energy of Be/2024Al composites was 363.364 k J·mol^(-1).Compared with composites reinforced with traditional ceramics,Be/2024Al composites can be deformed with ultra-high content of reinforcement,attributing to the deformable property of Be *** average relative error of the two models shows that modified Johnson–Cook model was more suitable for low temperature condition while strain-compensated Arrhenius model was more suitable for high temperature *** processing map was generated and a hot extrusion experiment was conducted according to the map.A comparation of the microstructure of Be/2024Al composites before and after extrusion shows that the Be particle deformed coordinately with the matrix and elongated at the extrusion direction.

关键词： Be/Al composites hot deformation behavior constitutive model hot extrusion

Sub-channel interference cancellation in SVD-based MIMO system

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The Journal of China Universities of Posts and Telecommunications 2007年第3期14卷 34-37页

作者： wu ping LI Li-hua ZHANG ping Beijing University of Posts and Telecommunications Beijing 100876 China

For singular value decomposition （SVD）-based multiple input multiple output （MIMO） systems, implicit channel state information （CSI） incurs interferences amongst sub-channels if the CSI at the transmitter is not explicit. An improved SVD-based MIMO which can fully cancel the inter sub-channel interferences by reconstructing the transmitter- receiver system matrix on interferences analysis is provided. Simulation results indicate that the proposed algorithm outperforms the traditional SVD-based MIMO in a large degree.

关键词： MIMO systems SVD interference cancellation (IC) CSI feedback

Effect of early enteral combined with parenteral nutrition in patients undergoing pancreaticoduodenectomy

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World Journal of Gastroenterology 2013年第35期19卷 5889-5896页

作者： Xin-Hua Zhu Ya-Fu wu Yu-Dong Qiu chun-ping Jiang Yi-Tao Ding Department of Hepatobiliary Surgery Affiliated Drum Tower Hospital Medical School of Nanjing University

AIM:To investigate the effect of early enteral nutrition(EEN)combined with parenteral nutritional support in patients undergoing pancreaticoduodenectomy(PD).METHODS:From January 2006,all patients were given EEN combined with parenteral nutrition(PN)(EEN/PN group,n=107),while patients prior to this date were given total parenteral nutrition(TPN)(TPN group,n=67).Venous blood samples were obtained for a nutrition-associated assessment and liver function tests on the day before surgery and 6 d after *** assessment of clinical outcome was based on postoperative ***-up for infectious and noninfectious complications was carried out for 30 d after hospital *** within 30 d afterdischarge was also ***:Compared with the TPN group,a significant decrease in prealbumin(PAB)(P=0.023)was seen in the EEN/PN *** bilirubin(TB),direct bilirubin(DB)and lactate dehydrogenase(LDH)were significantly decreased on day 6 in the EEN/PN group(P=0.006,0.004 and 0.032,respectively).The rate of gradeⅠcomplications,gradeⅡcomplications and the length of postoperative hospital stay in the EEN/PN group were significantly decreased(P=0.036,0.028and 0.021,respectively),and no hospital mortality was observed in our *** with the TPN group(58.2%),the rate of infectious complications in the EEN/PN group(39.3%)was significantly decreased(P=0.042).Eleven cases of delayed gastric emptying were noted in the TPN group,and 6 cases in the EEN/PN *** rate of delayed gastric emptying and hyperglycemia was significantly reduced in the EEN/PN group(P=0.031 and P=0.040,respectively).CONCLUSION:Early enteral combined with PN can greatly improve liver function,reduce infectious complications and delayed gastric emptying,and shorten postoperative hospital stay in patients undergoing PD.

关键词： Enteral nutrition Parenteral nutrition Pancreaticoduodenectomy Complications Metabolism

Synthesis of New Ligand 1,2-Bis{di[(R,R)-1,3,2-oxzaphosphlidine]phosphino}ethane with C_2-symmetric Axis and Application in Rh-catalyzed Asymmetric Hydrogenation

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Chemical Research in Chinese Universities 2007年第5期23卷 544-548页

作者： GONG Da-chun ZHOU Hua WEI ping OUYANG ping-kai College of Chemistry and Life Science China Three Gorges University Yichang 443001 P. R. China College of Life Science and Pharmacy Nanfing University of Technology Nanfing 210009 P. R. China

New ligand 1,2-bis{di[（R,R）-1,3,2-oxzaphosphlidine]phosphino}ethane [（R,R）-BDOPPEs 1,2,3 and 4] with C2-symmetric axis and bearing nitrogen and oxygen were synthesized from readily available optically active amino *** complexes with these ligands were highly enantioselective catalysts for asymmetric hydrogenation of N-benzoyldehydroamino acid derivatives and α-functionalized ketones in 99%*** 98%e.e.,*** new class of（R,R）-BDOPPEs 1,2,3 and 4 gave much more effectivity and enantionselectivity than their corresponding non-C2-asymmetric aminophosphine phosphinite.

关键词： (R, R) -BDOPPE C2-Symmetry Asymmetric catalytic hydrogenation

Theoretical Calculations of Optical Spectra and Their Pressure-Induced Shifts of MgAl_2O_4:Cr^(3+)

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Communications in Theoretical Physics 2008年第5期49卷 1339-1344页

作者： wu Fei ZHANG Ji-ping College of Physical Science and Technology Sichuan University Chengdu 610065 China

The energy levels of spectrum, wavefunetions and crystal-field parameters of MgAl2O4：Cr^3＋ at normal pressure have been calculated by the means of diagonalizing the complete d^3 energy matrix （DCEM）. With these results, the g factor of the ground state at normal pressure and the pressure-induced shift （PS） of the spectra1 levels are also calculated uniformly, and the calculated results are all in good agreement with the experimental ones. And the contributions of various crystal-field parameters to the energy levels at normal pressure and the variational rates of the R1 line shifting with the pressure are calculated, from which the physical origin of the red shift of the R1 line shifting with increasing pressure have been clearly shown.

关键词： crystal fields energy spectrum g factor high-pressure effect

Kinetics and numerical simulation of self-propagating high-temperature synthesis in Ti–Cr–Al–C systems

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Rare Metals 2014年第5期33卷 527-533页

作者： Guo-Bing Ying Xiao-Dong He Shan-Yi Du Yong-Ting Zheng chun-Cheng Zhu Yu-ping wu Cheng Wang Institute of Metals and Protection College of Mechanics and Materials Hohai University Center for Composite Materials and Structure Harbin Institute of Technology College of Chemistry and Chemical Engineering Harbin Normal University

In this paper, Ti–Cr–Al–C materials were investigated by self-propagating high-temperature synthesis（SHS） according to the experimental study and numerical simulation results. The highest adiabatic combustion temperature Tadof 2,467.45 K indicates that the2Ti–0Cr–Al–C is the highest exothermic reaction system in the Ti–Cr–Al–C system. The adiabatic combustion temperature decreases with the increase of the Cr content. And a higher exothermal reaction would result in higher porosity which is induced by the high temperature and pressure of C reducing atmosphere and Al vapor. Combustion characterization of the products shows that the geometrical alternating layers result in the high exothermal reaction and flame-front propagating velocity. The higher the Tadis, the thinner the layer is. To demonstrate the process of the microscopic characterization and show the detailed combustion process closed to the experimental observations, the flame-front propagating velocity and temperature distribution were simulated numerically.

关键词： Self-propagating high-temperature synthesis Temperature distribution Flame-front propagating velocity Numerical simulation