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COMPRESSIBLE VIRTUAL WINDOW ALGORITHM IN PICKING PROCESS CONTROL OF AUTOMATED SORTING SYSTEM

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Chinese Journal of Mechanical Engineering 2008年第3期21卷 41-45页

作者： WU yaohua zhang Yigong WU Yingying School of Control Science and Engineering Shandong University Jinan 250061China

Compared to fixed virtual window algorithm （FVWA）, the dynamic virtual window algorithm （DVWA） determines the length of each virtual container according to the sizes of goods of each order, which saves space of virtual containers and improves the picking efficiency. However, the interval of consecutive goods caused by dispensers on conveyor can not be eliminated by DVWA, which limits a further improvement of picking efficiency. In order to solve this problem, a compressible virtual window algorithm （CVWA） is presented. It not only inherits the merit of DVWA but also compresses the length of virtual containers without congestion of order accumulation by advancing the beginning time of order picking and reasonably coordinating the pace of order accumulation. The simulation result proves that the picking efficiency of automated sorting system is greatly improved by CVWA.

关键词： Virtual window algorithm Dynamics Compressibility Picking efficiency

Fingerprinting sediment sources in a typical karst catchment of southwest China

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International Soil and Water Conservation Research 2020年第3期8卷 277-285页

作者： Zhenwei Li Xianli Xu yaohua zhang Kelin Wang Huanjiang Observation and Research Station for Karst Ecosystem Key Laboratory for Agro-Ecological Processes in Subtropical RegionInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha410125China University of Chinese Academy of Sciences Beijing100049China

Due to the complex hydrogeological conditions in karst regions,it is difficult to measure sediment source contributions at a catchment scale *** objective of this study was to quantify the relative contributions of sediment sources and their temporal variability in a karst catchment in southwest *** depressions can trap eroded sediment similar to a dam or reservoir and,thus,are representative and typical test beds for identifying sediment sources in karst *** sediment cores were taken from a karst depression,58 soil samples from three potential sediment sources were collected,and 18 soil properties were *** relative contributions of cropland,forestland,and fissure or crack soils were calculated using a multivariate mixing *** fingerprinting results demonstrated that the cropland was the main sediment source in karst ***,according to the mean sediment contributions of the three deposited sediment cores,the sediment contribution from cropland topsoil was 69.3%,varying from 46.9%to 92.3%,and forestland soil and crack soil accounted for 8.6%and 22.1%of the sediment yield,and varying from 2.8%to 16.5%and 4.8%-36.6%,*** result indicated that great attention should be paid when using only a single core to quantify sediment *** to the deposited sediment was generally disturbed as cropland in the karst depression,the area that has not been disturbed in recent decades in depression was more appropriate to trace sediment sources in karst *** the best of our knowledge,this study was the first to quantify the contributions of sediment sources in the karst catchment of southwest *** study provides valuable information and a preliminary reference for applying a composite fingerprinting technique to quantify sediment sources in karst catchments.

关键词： Soil erosion Sedimentation Sediment tracing Earth's critical zone Ecohydrology

Social dominance-related major urinary proteins and the regulatory mechanism in mice

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Integrative Zoology 2015年第6期10卷 543-554页

作者： Huifen GUO Qi FANG Ying HUO yaohua zhang Jianxu zhang State Key Laboratory of Integrated Management of Pest Insects and Rodents in Agriculture Institute of ZoologyChinese Academy of SciencesBeijingChina

Major urinary proteins(MUPs)have been proven to be non-volatile male pheromones in ***,we aimed to elucidate the relationship between MUPs and dominance hierarchy,and the underlying molecular ***–submission relationship was established by chronic dyadic *** found that at the urinary protein level and hepatic mRNA level,the expression of major MUPs,including Mup20,was enhanced in dominant males compared with subordinate males,indicating that MUPs might signal the social status of male ***,the mRNA level of hepatic corticotropin releasing hormone receptor 2(CRHR2)was higher in subordinate male mice than in dominant male *** also enhanced the expression of CRHR2,but suppressed that of ***2 agonist treatment reduced the expression of MUPs in ***,male social status failed to exert significant influence on serum testosterone and corticosterone as well as the mRNA expression of their *** findings reveal that some MUPs,especially Mup20,might constitute potential dominance pheromones and could be downregulated by hepatic CRHR2,which is possibly independent of androgen or corticosterone systems.

关键词： androgen corticosterone corticotropin releasing hormone receptor 2 major urinary proteins social rank

Hysteresis in sap flow and its controlling mechanisms for a deciduous broad-leaved tree species in a humid karst region

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Science China Earth Sciences 2019年第11期62卷 1744-1755页

作者： Rongfei zhang Xianli XU Meixian LIU yaohua zhang Chaohao XU Ruzhou YI Wei LUO Chris SOULSBY Key Laboratory of Agro-ecological Processes in Subtropical Region Institute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China Huanjiang Observation and Research Station for Karst Ecosystem Chinese Academy of SciencesHuanjiang 547100China University of Chinese Academy of Sciences Beijing 100049China Northern Rivers Institute School of GeosciencesUniversity of AberdeenAberdeen AB243UFScotlandUK

The critical zone(CZ) represents the intersection of the biosphere with the atmosphere, hydrosphere and *** the hydrological processes and human impact factors on the CZ is fundamental to sustainable water resources management for agroforestry. Transpiration(T) is an important component of terrestrial evapotranspiration(ET), and understanding the time lag(TL) between vegetation transpiration and meteorological factors can improve our knowledge of the mechanisms of vegetation adaptability to a changing environment. However, the controlling factors on the TL remain poorly understood. Therefore, the objective of this study is identifying the temporal dynamics of key controlling factors on the TL, using a typical deciduous broad-leaved tree species(Zenia insigins Chun) of CZ in subtropical humid karst regions. This species is used as an example to explore the characteristics of the TL between SF(sap flow) and hydro-meteorological forcing. Sap flow in these 6 trees was monitored using the thermal dissipation probes(TDP). Results showed that:(1) the peak of diurnal sap flow generally lagged behind PAR but preceded Ta(air temperature), RH(relative humidity) and VPD(vapor pressure deficit), with the mean TL of-67.4 min(PAR), 90.5 min(Ta), 91.6 min(RH) and 92.9 min(VPD), respectively;(2) TL had no significant relationships with the daily mean meteorological factors and soil moisture, but was highly(R^2>0.66) correlated to CRs(changing rates of meteorological factors) in the morning;(3) At seasonal scale, the sap flow rate and TL both were controlled by the seasonality of precipitation and temperature. Overall, the seasonality of the TL was caused by plants' high water loss and strongly active physiological response in hot seasons, leading to close stomata earlier than in cold seasons;(4) The reason why CRs proposed can explain the TL better than mean values of metrological factors is that the CRs considered the distribution and change processes of metro

关键词： Eco-hydrology Soil hydrology Landscape ecology Earth's critical zone

INTEGRATION OF STORAGE CHARACTERISTIC WITH ON-LINE SERVICE CHARACTERISTIC OF AS/RS

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Chinese Journal of Mechanical Engineering 2001年第3期14卷 259-261页

作者： Wu yaohua,zhang Qiang,zhang Danyu (Center of Material Handling Engineering, Shandong University) 山东大学物流工程中心山东济南

Directed at how to integrated storage characteristic with on-line service characteristic of AS/RS, a solution based on database design and programming method is *** results show that this model is reasonable and appli... 详细信息

关键词： MHS AS/RS Inventory management database

USING COLORED-TIMED PETRI NET FOR THE SOLUTION OF DEADLOCK IN A FLEXIBLE ASSEMBLY SYSTEM

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Chinese Journal of Mechanical Engineering 2001年第4期14卷 362-365页

作者： Wu yaohua, zhang Danyu (Center of Material Handling Egineering,Shandong University) 山东大学山东

A colored timed Petri net(CTPN)modeling technique is developed for flexible assembly system(FAS) In particular,one section is devoted to the deadlock nodel based on the Petri net The rule of the deadlock error recovery is given Through the analysis of the behavioral properties of the FAS with the deadlock recovery model,the deadlock problem would be solved in the system.

关键词： Colored timed Petri net FAS Deadlock

The miR166 mediated regulatory module controls plant height by regulating gibberellic acid biosynthesis and catabolism in soybean

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Journal of Integrative Plant Biology 2022年第5期64卷 995-1006页

作者： Chen Zhao Jingjing Ma yaohua zhang Suxin Yang Xianzhong Feng Jun Yan School of Life Sciences East China Normal UniversityShanghai 200241China Key Laboratory of Soybean Molecular Design Breeding Northeast Institute of Geography and AgroecologyThe Chinese Academy of SciencesChangchun 130102China

MicroRNAs(miRNAs)are endogenous small noncoding RNAs that play critical roles in regulating plant growth and ***,we used Short Tandem Target Mimic(STTM)technology to generate soybean(Glycine max(L.)Merr.)miRNA knockdown lines and identify miRNAs that regulate plant height,a key agronomic trait that affects ***166 successfully silenced miR166 in soybean and upregulated the expression of miR166 target genes,such as *** miR166 knockdown lines(GmSTTM166)displayed a reduced plant height ***,GmSTTM166 plants contained lower levels of bioactive gibberellic acid(GA3)than wild-type plants,and application of exogenous GA partially rescued the dwarf phenotype of *** of miR166 altered the expression of genes involved in GA biosynthesis and *** analysis revealed that ATHB14-LIKE directly represses transcription of the GA biosynthesis genes Gm GA1 and Gm GA2,while activating transcription of the GA catabolic gene GIBBERLLIN 2 OXIDASE2(GmGA2ox2).Collectively,these results reveal a pivotal role for miR166 in the genetic control of plant height in soybean,thereby providing invaluable insights for molecular breeding to improve soybean yield.

关键词： miRNA plant development plant height soybean

Generation of male-sterile soybean lines with the CRISPR/Cas9 system

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The Crop Journal 2021年第6期9卷 1270-1277页

作者： Xiao Chen Suxin Yang yaohua zhang Xiaobin Zhu Xinjing Yang Chunbao zhang Haiyan Li Xianzhong Feng Key Laboratory of Soybean Molecular Design Breeding Northeast Institute of Geography and AgroecologyThe Innovative Academy of Seed DesignChinese Academy of SciencesChangchun 130102JilinChina University of Chinese Academy of Sciences Beijing 100049China School of Life Science Jilin Agricultural UniversityChangchun 130118JilinChina Jilin Academy of Agricultural Sciences Changchun 130000JilinChina

Soybean [Glycine max(L.) Merr.] provides a rich source of plant protein and oil worldwide. The commercial use of transgenic technology in soybean has become a classical example of the application of biotechnology to crop improvement. Although genetically modified soybeans have achieved commercial success,hybrid soybean breeding is also a potential way to increase soybean yield. Soybean cytoplasmic malesterile(CMS) lines have been used in three-line hybrid breeding systems, but their application to exploiting soybean heterosis has been limited by rare germplasm resource of sterile lines. The generation of various genetic diversity male-sterile soybean lines will help to overcome the shortcoming. In this study,we used targeted editing of AMS homologs in soybean by CRISPR/Cas9 technology for the first time to generate stable male-sterile lines. Targeted editing of GmAMS1 resulted in a male-sterile phenotype,while editing of GmAMS2 failed to produce male-sterile lines. GmAMS1 functions not only in the formation of the pollen wall but also in the controlling the degradation of the soybean ***/Cas9 technology could be used to rapidly produce stable male-sterile lines, providing new sterile-line materials for soybean hybrid breeding systems.

关键词： CRISPR/Cas9 Soybean Tapetum Gmams Male sterility

Drought-triggered repression of miR166 promotes drought tolerance in soybean

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The Crop Journal 2024年第1期12卷 154-163页

作者： Chen Zhao Jingjing Ma Chen Yan Yu Jiang yaohua zhang Yudan Lu Ye zhang Suxin Yang Xianzhong Feng Jun Yan School of Life Sciences East China Normal UniversityShanghai 200241China Key Laboratory of Soybean Molecular Design Breeding Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun 130102JilinChina

Drought stress limits agricultural productivity *** and characterizing genetic components of drought stress-tolerance networks may improve crop resistance to drought *** show that the regulatory module formed by miR166 and its target gene,ATHB14-LIKE,functions in the regulation of drought tolerance in soybean(Glycine max).Drought stress represses the accumulation of miR166,leading to upregulation of its target *** knockdown of miR166 in the stable transgenic line GmSTTM166 conferred drought tolerance without affecting *** of ABA signaling pathway genes was regulated by the miR166-mediated regulatory pathway,and ATHB14-LIKE directly activates some of these *** is a feedback regulation between ATHB14-LIKE and MIR166 genes,and ATHB14-LIKE inhibits MIR166 *** findings reveal that drought-triggered regulation of the miR166-mediated regulatory pathway increases plants drought resistance,providing new insights into drought stress regulatory network in soybean.

关键词： Soybean Drought stress miRNA ABA signaling