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Reinforcement Learning-Based Dynamic Order Recommendation for On-Demand food Delivery

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Tsinghua Science and technology 2024年第2期29卷 356-367页

作者： Xing Wang Ling Wang Chenxin Dong Hao ren Ke Xing department of Automation Tsinghua UniversityBeijing 100080China School of Mechanical and Automotive engineering Qingdao Hengxing University of Science and TechnologyQingdao 266100China Meituan Beijing 100015China

On-demand food delivery(OFD)is gaining more and more popularity in modern *** a kernel order assignment manner in OFD scenario,order recommendation directly influences the delivery efficiency of the platform and the delivery experience of *** paper addresses the dynamism of the order recommendation problem and proposes a reinforcement learning solution *** actor-critic network based on long short term memory(LSTM)unit is designed to deal with the order-grabbing conflict between different ***,three rider sequencing rules are accordingly proposed to match different time steps of the LSTM unit with different *** test the performance of the proposed method,extensive experiments are conducted based on real data from Meituan delivery *** results demonstrate that the proposed reinforcement learning based order recommendation method can significantly increase the number of grabbed orders and reduce the number of order-grabbing conflicts,resulting in better delivery efficiency and experience for the platform and riders.

关键词： on-demand food delivery order recommendation reinforcement learning actor-critic network long short term memory

Application of a simplified ADM1 for full-scale anaerobic co-digestion of cattle slurry and grass silage:assessment of input variability

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Frontiers of Environmental Science & engineering 2024年第4期18卷 125-139页

作者： Sofia Tisocco Sören Weinrich Gary Lyons Michael Wills Xinmin Zhan Paul Crosson Civil engineering College of Science and EngineeringUniversity of GalwayGalwayH91 TK33Ireland Teagasc Animal and Bioscience Research department Animal and Grassland Research and Innovation CentreDunsanyC15 PW93Ireland Biochemical Conversion department Deutsches Biomasseforschungszentrum gemeinnützige GmbHLeipzig 04347Germany Faculty of Energy·Building Services·Environmental engineering Münster University of Applied SciencesSteinfurt 48565Germany Agri-food and Biosciences institute HillsboroughBT266DRUK Ryan institute University of GalwayGalwayH91 TK33Ireland MaREI Research Centre for Energy Climate and MarineRyan InstituteUniversity of GalwayGalwayH91 TK33Ireland

Mathematical modeling of anaerobic digestion is a powerful tool to predict gas yields and optimize the *** Anaerobic Digestion Model No.1(ADM1)is a widely implemented model for this ***,modeling full-scale biogas plants is challenging due to the extensive substrate and parameter characterization *** study describes the modification of the ADM1 through a simplification of individual process phases,characteristic components and required ***,the ability of the simplified model to simulate the co-digestion of grass silage and cattle slurry was evaluated using data from a full-scale biogas *** impacts of substrate composition(crude carbohydrate,protein and lipid concentration)and variability of carbohydrate degradability on simulation results were assessed to identify the most influential *** indicated that the simplified version was able to depict biogas and biomethane production with average model efficiencies,according to the Nash-Sutcliffe efficiency(NSE)coefficient,of 0.70 and 0.67,respectively,and was comparable to the original ADM1(average model efficiencies of 0.71 and 0.63,respectively).The variability of crude carbohydrate,protein and lipid concentration did not significantly impact biogas and biomethane output for the data sets *** contrast,carbohydrate degradability seemed to explain much more of the variability in the biogas and methane ***,the application of simplified models provides a reliable basis for the process simulation and optimization of full-scale agricultural biogas plants.

关键词： ADM1 Agricultural feedstocks Biogas technology Input variability Parameter estimation

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外源铜对小麦萌发生长的影响

淮阴工学院学报 2003年第1期12卷 51-54页

作者：张国良淮阴工学院农业与食品工程系江苏淮安223001

研究了不同浓度的铜处理对小麦萌发生长的影响。结果表明 ,10 - 6 mol L处理对小麦生长影响不大 ,5× 10 - 3mol L是使小麦种子失活的致死浓度 ;各处理均使小麦叶片的叶绿素含量有所下降 ,淀粉酶活性下降 ;随着Cu2 + 浓度的增大 ,Cu2 +... 详细信息

研究了不同浓度的铜处理对小麦萌发生长的影响。结果表明 ,10 - 6 mol L处理对小麦生长影响不大 ,5× 10 - 3mol L是使小麦种子失活的致死浓度 ;各处理均使小麦叶片的叶绿素含量有所下降 ,淀粉酶活性下降 ;随着Cu2 + 浓度的增大 ,Cu2 + 对淀粉酶活性的抑制效应增强 ,同时对小麦幼苗生长的抑制作用也增强 ,且表现抑制效应地下部分 >

关键词：外源铜小麦萌发生长

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矮牵牛组织快繁试验研究

淮阴工学院学报 2004年第5期13卷 84-85,88页

作者：任旭琴淮阴工学院农业工程与食品工程系江苏淮安223001

以矮牵牛无菌苗的叶片为组织培养材料,对不同培养阶段进行了对比研究,结果发现,培养基MS+6-BA2mg/L+NAA0.3mg/L最适合诱导不定芽,在继代培养阶段,MS+6-BA2mg/L+NAA0.1mg/L继代效果最好,增殖系数最高,壮苗阶段在培养基MS+6-BA0.5mg/L上... 详细信息

以矮牵牛无菌苗的叶片为组织培养材料,对不同培养阶段进行了对比研究,结果发现,培养基MS+6-BA2mg/L+NAA0.3mg/L最适合诱导不定芽,在继代培养阶段,MS+6-BA2mg/L+NAA0.1mg/L继代效果最好,增殖系数最高,壮苗阶段在培养基MS+6-BA0.5mg/L上幼苗生长健壮,培养基1/2MS+NAA0.05mg/L中,幼苗生根状况最好,根系发育良好,适合移栽用苗。

关键词：矮牵牛组织培养叶片

Molecular cloning,characterization and promoter analysis of LbgCWIN1 and its expression profiles in response to exogenous sucrose during in vitro bulblet initiation in lily

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Horticultural Plant Journal 2024年第2期10卷 545-555页

作者： Cong Gao Shiqi Li Yunchen Xu Yue Liu Yiping Xia Ziming ren Yun Wu Genomics and Genetic engineering Laboratory of Ornamental Plants Institute of Landscape ArchitectureCollege of Agriculture and BiotechnologyZhejiang UniversityHangzhouZhejiang 310058China Laboratory of Flower Bulbs Department of Landscape ArchitectureSchool of Civil Engineering and ArchitectureZhejiang Sci-Tech UniversityHangzhouZhejiang 310018China

Lily(Lilium spp.) is an important ornamental flower, which is mainly propagated by bulbs. Cell wall invertases(CWINs), which catalyze the irreversibly conversion of sucrose into glucose and fructose in the extracellular space, are key enzymes participating in sucrose allocation in higher plants. Previous studies have shown that CWINs play an essential role in bulblet initiation process in bulbous crops, but the underlying molecular mechanism remains unclear. Here, a CWIN gene of Lilium brownii var. giganteum(Lbg) was identified and amplified from genomic DNA. Quantitative RT-PCR assays revealed that the expression level of LbgCWIN1 was highly upregulated exactly when the endogenous starch degraded in non-sucrose medium during in vitro bulblet initiation in Lbg. Phylogenetic relationship, motif, and domain analysis of LbgCWIN1 protein and CWINs in other plant species showed that all sequences of these CWIN proteins were highly conserved. The promoter sequence of LbgCWIN1 possessed a number of alpha-amylase-, phytohormone-, light-and stress-responsive cis-elements. Meanwhile, β-glucuronidase(GUS) assay showed that the 459 bp upstream fragment from the translational start site displayed maximal promoter activity. These results revealed that LbgCWIN1 might function in the process of in vitro bulblet initiation and be in the response to degradation of endogenous starch.

关键词： Lilium brownii var.giganteum LbgCWIN1 Phylogenetic analysis Promoter analysis Bulblet initiation

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麦种萌发后干燥控芽对种子重新发芽的影响

淮阴工学院学报 2002年第1期11卷 21-23页

作者：周青高艳杨绍华淮阴工学院农业工程与食品工程系江苏淮安223001

选用扬 15 8等四个不同类型的小 (大 )麦品种 ,进行催芽后采用晾晒干燥的方法降低种子含水量进行控芽。结果表明 ,将发芽种子的含水量降至 3 0 %以下时种子发芽停止 ,但重新吸水发芽时随含水量降低发芽速度和发芽率均下降 ,而对成苗后... 详细信息

选用扬 15 8等四个不同类型的小 (大 )麦品种 ,进行催芽后采用晾晒干燥的方法降低种子含水量进行控芽。结果表明 ,将发芽种子的含水量降至 3 0 %以下时种子发芽停止 ,但重新吸水发芽时随含水量降低发芽速度和发芽率均下降 ,而对成苗后幼苗素质没有不良影响。其中短期控芽将含水量降至 2 0 3 0

关键词：干燥控芽种子发芽麦种发芽率幼苗素质

Unraveling the role of iron on Ni-Fe alloy nanoparticles during the electrocatalytic ethanol-to-acetate process

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Nano Research 2024年第4期17卷 2328-2336页

作者： Junshan Li Luming Li Xinyu Ma Jun Wang Jun Zhao Yu Zhang ren He Yaoyue Yang Andreu Cabot Yongfa Zhu institute for Advanced Study Chengdu University610106 ChengduChina State Key Laboratory of Environmental-Friendly Energy Materials Southwest University of Science and TechnologyMianyang 621010China College of food and Biological engineering Chengdu UniversityChengdu 610106China School of Chemistry and Environment Southwest Minzu UniversityChengdu 610041China Hebei Key Laboratory of Photoelectric Control on Surface and Interface College of ScienceHebei University of Science and TechnologyShijiazhuang 050018China Catalonia institute for Energy Research-IREC Sant Adriàde BesòsBarcelona 08930CataloniaSpain ICREA Pg.Lluís Companys 23Barcelona 08010CataloniaSpain department of Chemistry Tsinghua UniversityBeijing 100084China

The anodic electrooxidation of ethanol to value-added acetate is an excellent example of replacing the oxygen evolution reaction to promote the cathodic hydrogen evolution reaction and save ***,we present a colloidal strategy to produce Ni-Fe bimetallic alloy nanoparticles(NPs)as efficient electrocatalysts for the electrooxidation of ethanol in alkaline ***-Fe alloy NPs deliver a current density of 100 mA·cm^(-2) in a 1.0 M KOH solution containing 1.0 M ethanol merely at 1.5 V *** hydrogen electrode(RHE),well above the performance of other electrocatalysts in a similar *** continuous 10 h testing at this external potential,this electrode is able to produce an average of 0.49 mmol·cm^(-2)·h^(-1) of acetate with an ethanol-to-acetate Faradaic efficiency of 80%.A series of spectroscopy techniques are used to probe the electrocatalytic process and analyze the ***,density functional theory(DFT)calculations demonstrate that the iron in the alloy NPs significantly enhances the electroconductivity and electron transfer,shifts the rate-limiting step,and lowers the energy barrier during the ethanol-to-acetate reaction pathway.

关键词： electrocatalysis ethanol oxidation reaction alloy nanoparticle acetate biorefinery

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植物生长调节剂在水仙上的应用

淮阴工学院学报 2004年第5期13卷 86-88页

作者：季云美任旭琴淮阴工学院农业工程与食品工程系江苏淮安223001

为了提高水仙的观赏价值,用四种植物生长调节剂(高效唑、多效唑、矮壮素、比久)对水仙植株进行处理,结果表明:不同种类的调节剂对水仙花的矮化效果不同,其中高效唑和多效唑作用效果明显好于其他两种;同一调节剂则因处理浓度不同矮化效... 详细信息

为了提高水仙的观赏价值,用四种植物生长调节剂(高效唑、多效唑、矮壮素、比久)对水仙植株进行处理,结果表明:不同种类的调节剂对水仙花的矮化效果不同,其中高效唑和多效唑作用效果明显好于其他两种;同一调节剂则因处理浓度不同矮化效果存在显著差异,高效唑与多效唑处理水仙花的适宜浓度均为100mg/L,300mg/L的矮壮素和比久也可以达到理想的矮化作用;生长调节剂对水仙花的始花期显著延迟作用,延迟的天数从6天到19天不等,且不同调节剂与水仙花的开花时间有显著的相关性。

关键词：水仙植物生长调节剂

Candidate genes conferring ethylene-response in cultivated peanuts determined by BSA-seq and fine-mapping

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The Crop Journal 2024年第3期12卷 856-865页

作者： Yanyan Tang Zhong Huang Shaohui Xu Wenjie Zhou Jianjun ren Fuxin Yu Jingshan Wang Wujun Ma Lixian Qiao College of Agronomy Qingdao Agricultural UniversityQingdao 266109ShandongChina Murdoch University Food Futures InstitutePerthWA 6150Australia The Characteristic Laboratory of Crop Germplasm Innovation and Application Provincial Department of EducationCollege of AgronomyQingdao Agricultural UniversityQingdao 266109ShandongChina Academy of Dongying Efficient Agricultural technology and Industry on Saline and Alkaline Land in Collaboration with Qingdao Agricultural University Dongying 257347ShandongChina

Ethylene plays essential roles in plant growth,development and stress *** ethylene signaling pathway and molecular mechanism have been studied extensively in Arabidopsis and rice but limited in ***,we established a sand-culture method to screen pingyangmycin mutagenized peanut lines based on their specific response to ethylene(“triple response”).An ethylene-insensitive mutant,inhibition of peanut hypocotyl elongation 1(iph1),was identified that showed reduced sensitivity to ethylene in both hypocotyl elongation and root *** bulked segregant analysis sequencing,a major gene related to iph1,named AhIPH1,was preliminarily mapped at the chromosome Arahy.01,and further narrowed to a 450-kb genomic region through substitution mapping strategy.A total of 7014 genes were differentially expressed among the ACC treatment through RNA-seq analysis,of which only the Arahy.5BLU0Q gene in the candidate mapping interval was differentially expressed between WT and mutant *** sequence variations,functional annotation and transcriptome analysis revealed that a predicated gene,Arahy.5BLU0Q,encoding SNF1 protein kinase,may be the candidate gene for *** gene contained two single-nucleotide polymorphisms at promoter region and was more highly expressed in iph1 than *** findings reveal a novel ethylene-responsive gene,which provides a theoretical foundation and new genetic resources for the mechanism of ethylene signaling in peanuts.

关键词： Ethylene-insensitive Hypocotyl elongation AhIPH1 Candidate gene Genetic resources