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A Deep Reinforcement Learning-Based Technique for Optimal Power Allocation in Multiple Access Communications

Intelligent Automation & Soft Computing 2024年第1期39卷 93-108页

作者： Sepehr Soltani Ehsan Ghafourian Reza Salehi Diego Martín Milad Vahidi department of Industrial Engineering College of EngineeringUniversity of HoustonHoustonTX77204USA department of Computer Science Iowa State UniversityAmesIowaUSA ETSI de Telecomunicación Universidad Politécnica de MadridMadridSpain Faculty of School of plant and Environmental sciences Virginia Polytechnic Institute and StateUniversityBlacksburgVirginia24060USA

Formany years,researchers have explored power allocation(PA)algorithms driven bymodels in wireless networks where multiple-user communications with interference are present.Nowadays,data-driven machine learning methods have become quite popular in analyzing wireless communication systems,which among them deep reinforcement learning(DRL)has a significant role in solving optimization issues under certain constraints.To this purpose,in this paper,we investigate the PA problem in a k-user multiple access channels(MAC),where k transmitters(e.g.,mobile users)aim to send an independent message to a common receiver(e.g.,base station)through wireless channels.To this end,we first train the deep Q network(DQN)with a deep Q learning(DQL)algorithm over the simulation environment,utilizing offline learning.Then,the DQN will be used with the real data in the online training method for the PA issue by maximizing the sumrate subjected to the source power.Finally,the simulation results indicate that our proposedDQNmethod provides better performance in terms of the sumrate compared with the available DQL training approaches such as fractional programming(FP)and weighted minimum mean squared error(WMMSE).Additionally,by considering different user densities,we show that our proposed DQN outperforms benchmark algorithms,thereby,a good generalization ability is verified over wireless multi-user communication systems.

关键词： Deep reinforcement learning deep Q learning multiple access channel power allocation

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Exergy Analysis of Charge and Discharge Processes of Thermal Energy Storage System with Various Phase Change Materials:A Comprehensive Comparison

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Journal of Thermal Science 2024年第2期33卷 509-521页

作者： Mojtaba TAHERI Fathollah POURFAYAZ Roghayeh HABIBI Akbar MALEKI department of Renewable Energies and Environment Faculty of New Sciences and TechnologiesUniversity of TehranTehran***Iran Faculty of Mechanical Engineering Shahrood University of TechnologyShahrood***Iran

Thermal energy storage(TES) is of great importance in solving the mismatch between energy production and consumption.In this regard,choosing type of Phase Change Materials(PCMs) which are widely used to control heat in latent thermal energy storage systems,plays a vital role as a means of TES efficiency.However,this field suffers from lack of a comprehensive investigation on the impact of various PCMs in terms of exergy.To address this issue,in this study,in addition to indicating the melting temperature and latent heat of various PCMs,the exergy destruction and exergy efficiency of each material are estimated and compared with each other.Moreover,in the present work the impact of PCMs mass and ambient temperature on the exergy efficiency is evaluated.The results proved that higher latent heat does not necessarily lead to higher exergy efficiency.Furthermore,to obtain a suitable exergy efficiency,the specific heat capacity and melting temperature of the PCMs must also be considered.According to the results,LiF-CaF_(2)(80.5%:19.5%,mass ratio) mixture led to better performance with satisfactory exergy efficiency(98.84%) and notably lower required mass compared to other PCMs.Additionally,the highest and lowest exergy destruction are belonged to GR25 and LiF-CaF_(2)(80.5:19.5) mixture,respectively.

关键词： exergy analysis phase change materials thermal energy storage exergy efficiency

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Direct somatic embryogenesis and related gene expression networks in leaf explants of Hippeastrum ‘Bangkok Rose’

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Horticultural plant Journal 2024年第2期10卷 556-572页

作者： Jingjue Zeng Yi Deng Shahid Iqbal Jiarui Zhang Kunlin Wu Guohua Ma Lin Li Guangyi Dai Rufang Deng Lin Fang Songjun Zeng Guangdong Provincial Key Laboratory of Applied Botany South China Botanical GardenChinese Academy of SciencesGuangzhouGuangdong 510650China University of the Chinese Academy of sciences Beijing 100049China South China National Botanical Garden GuangzhouGuangdong 510650China Zhaoqing Branch Center of Guangdong Laboratory for Lingnan Modern Agricultural Science and Technology ZhaoqingGuangdong 526000China Horticultural Science department North Florida Research and Education CenterUniversity of Florida/IFASQuincyFL 32351USA Public Laboratory of South China Botanical Garden Chinese Academy of SciencesGuangzhouGuangdong 510650China Key Laboratory of South China Agricultural plant Molecular Analysis and Gene Improvement South China Botanical GardenChinese Academy of SciencesGuangzhouGuangdong 510650China

Hippeastrum, a highly diverse genus in the Amaryllidaceae family, is a valuable ornamental bulbous flowering plant. Somatic embryogenesis(SE) is an efficient method for mass production of Hippeastrum plantlets. Previous studies have been devoted to the in vitro propagation of Hippeastrum, but the SE and its regulatory networks are rarely reported. In this study, we established a direct SE method of Hippeastrum Bangkok Rose' using leaf bases as explants. MS supplemented with 1.00 mg·L^(-1)NAA +1.00 mg·L^(-1)KT + 0.25 mg·L^(-1)TDZ was the optimal medium for SE. Histological observations showed that the bipolar somatic embryo originated from the epidermal cell layer and underwent initiation,globular, scutellar and coleoptile stages. During SE, endogenous hormones of IAA, CTK, ABA, and SA were highly accumulated. Transcriptomic analysis revealed the genes encoding auxin biosynthesis/metabolic enzymes and efflux carriers were induced, while the auxin receptor of TIR1 and ARF transcriptional repressor of Aux/IAA were down-regulated and up-regulated, respectively, leading to suppression of auxin signaling. In contrast, cytokine signaling was promoted at the early stage of SE, as biosynthesis, transport, and signaling components were up-regulated.Various stress-related genes were up-regulated at the early or late stages of SE. Chromatin remodeling could also be dynamically regulated via distinct expression enzymes that control histone methylation and acetylation during SE. Moreover, key SE regulators, including WOXs and SERKs were highly expressed along with SE. Overall, the present study provides insights into the SE regulatory mechanisms of the Hippeastrum.

关键词： Hippeastrum Tissue culture Somatic embryogenesis Gene regulation

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A potato late blight resistance gene protects against multiple Phytophthora species by recognizing a broadly conserved RXLR-WY effector

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Molecular plant 2022年第9期15卷 1457-1469页

作者： Xiao Lin Andrea Olave-Achury Robert Heal Marina Pais Kamil Witek Hee-Kyung Ahn He Zhao Shivani Bhanvadia Hari S.Karki Tianqiao Song Chih-hang Wu Hiroaki Adachi Sophien Kamoun Vivianne G.A.A.Vleeshouwers Jonathan D.G.Jones The Sainsbury Laboratory University of East AngliaNorwich Research ParkNR47UH NorwichUK Wageningen UR plant Breeding Wageningen University and ResearchDroevendaalsesteeg 16708 PB WageningenThe Netherlands present address:Institute of plant Protection Jiangsu Academy of Agricultural SciencesNanjing 210014P.R.China present address:Institute of plant and Microbial Biology Academia SinicaTaipei 11529 Taiwan present address:Laboratory of Crop Evolution Graduate School of AgricultureKyoto UniversityMozumeMukoKyoto 617-0001Japan present address:Lipman Family Farms 21106 Six Ls Farm RdEsteroFloridaUnited States

Species of the genus Phytophthora,the plant killer,cause disease and reduce yields in many crop plants.Although many Resistance to Phytophthora infestans(Rpi)genes effective against potato late blight have been cloned,few have been cloned against other Phytophthora species.Most Rpi genes encode nucleotide-binding domain,leucine-rich repeat-containing(NLR)immune receptor proteins that recognize RXLR(Arg-X-Leu-Arg)effectors.However,whether NLR proteins can recognize RXLR effectors from multiple Phytophthora species has rarely been investigated.Here,we identified a new RXLR-WY effector AVRamr3 from P.infestans that is recognized by Rpi-amr3 from a wild Solanaceae species Solanum americanum.Rpi-amr3 associates with AVRamr3 in planta.AVRamr3 is broadly conserved in many different Phytophthora species,and the recognition of AVRamr3 homologs by Rpi-amr3 activates resistance against multiple Phytophthora pathogens,including the tobacco black shank disease and cacao black pod disease pathogens P.parasitica and P.palmivora.Rpi-amr3 is thus the first characterized resistance gene that acts against P.parasitica or P.palmivora.These findings suggest a novel path to redeploy known R genes against different important plant pathogens.

关键词： Rpi-amr3 AVRamr3 potato late blight Phytophthora disease RXLR-WY effector Solanum americanum

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EXECUTER2 modulates the EXECUTER1 signalosome through its singlet oxygen-dependent oxidation

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Molecular plant 2022年第3期15卷 438-453页

作者： Vivek Dogra Rahul Mohan Singh Mengping Li Mingyue Li Somesh Singh Chanhong Kim Shanghai Center for plant Stress Biology CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghai 200032China University of the Chinese Academy of sciences Beijing 100049China present address:Biotechnology Division CSIR-Institute of Himalayan Bioresource TechnologyPalampur 176061India

Oxidative post-translational modifications of specific chloroplast proteins contribute to the initiation of retrograde signaling.The Arabidopsis thaliana EXECUTER1(EX1)protein,a chloroplast-localized singlet oxygen(^(1)O_(2))sensor,undergoes tryptophan(Trp)643 oxidation by^(1)O_(2),a chloroplast-derived and light-dependent reactive oxygen species.The indole side chain of Trp is vulnerable to^(1)O_(2),leading to the generation of oxidized Trp variants and priming EX1 for degradation by a membrane-bound FtsH protease.The perception of^(1)O_(2)via Trp643 oxidation and subsequent EX1 proteolysis facilitate chloroplast-to-nucleus retrograde signaling.In this study,we discovered that the EX1-like protein EX2 also undergoes^(1)O_(2)-dependent Trp530 oxidation and FtsH-dependent turnover,which attenuates^(1)O_(2)signaling by decelerating EX1-Trp643 oxidation and subsequent EX1 degradation.Consistent with this finding,the loss of EX2 function reinforces EX1-dependent retrograde signaling by accelerating EX1-Trp643 oxidation and subsequent EX1 proteolysis,whereas overexpression of EX2 produces molecular phenotypes opposite to those observed in the loss-of-function mutants of EX2.Intriguingly,phylogenetic analysis suggests that EX2 may have emerged evolutionarily to attenuate the sensitivity of EX1 toward^(1)O_(2).Collectively,these results suggest that EX2 functions as a negative regulator of the EX1 signalosome through its own^(1)O_(2)-dependent oxidation,providing a new mechanistic insight into the regulation of EX1-mediated^(1)O_(2)signaling.

关键词： EXECUTER1 EXECUTER2 singlet oxygen retrograde signaling Trp oxidation FtsH protease

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Allotetraploidization event of Coptis chinensis shared by all Ranunculales

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Horticultural plant Journal 2024年第1期10卷 288-303页

作者： Yan Zhang Weina Ge Jia Teng Yanmei Yang Jianyu Wang Zijian Yu Jiaqi Wang Qimeng Xiao Junxin Zhao Shaoqi Shen Yishan Feng Shoutong Bao Yu Li Yuxian Li Tianyu Lei Yuxin Pan Lan Zhang Jinpeng Wang department of Bioinformatics School of Life SciencesNorth China University of Science and TechnologyTangshanHebei 063000China School of Life sciences North China University of Science and TechnologyTangshanHebei 063000China State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of ScienceBeijing 100093China University of Chinese Academy of sciences Beijing 100049China

Coptis chinensis Franch.,also named Chinese goldthread is a member of Ranunculaceae in the order Ranunculales and represents an important lineage of early eudicots with traditional medicinal value.In our study,by using syntenic analysis combined with phylogenomic analysis of C.chinensis and four other representative genomes from basal and core eudicots,we confirmed that the WGD event in C.chinensis was shared by Aquilegia coerulea and Papaver somniferum L.and quickly occurred after Ranunculales diverged from other eudicots,likely a Ranunculales common tetraploidization(RCT).The synonymous nucleotide substitutions at synonymous sites distribution of syntenic blocks across these genomes showed that the evolutionary rate of the P.somniferum genome is faster than that of the C.chinensis genome by approximately 13.7%,possibly due to Papaveraceaes having an additional special tetraploidization event(PST).After Ks correction,the RCT dated to 115—130 million years ago(MYA),which was close to the divergence of Ranunculaceaes and Papaveraceaes approximately115.45—130.51 MYA.Moreover,we identified homologous genes related to polyploidization and speciation and constructed multiple sequence alignments with different reference genomes.Notably,the event-related subgenomes in the basal genomes all showed genomic fractionation bias,suggesting a likely allopolyploid nature of the RCT,PST and T-Alpha and T-Beta events in Tetracentron sinense.In addition,we detected that the sixteen P450 subfamilies were markedly expanded in the genomes of Ranunculales,and most of them were related to the RCT and PST events.We constructed a new platform for Early Eudicot Comparative Genomic Research(http://www.***.top/index.html)to store more information.In summary,our findings support the WGD of C.chinensis shared by Ranunculales,which is likely an allotetraploidization event.This present effort offered new insights into the evolution of key polyploidization events and the genes related to secondary metabolites during the diversification of ea

关键词： Coptis chinensis Ranunculales Polyploidization Genomic fractionation P450 genes

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Rapid characterization of non-volatile phenolic compounds reveals the reliable chemical markers for authentication of traditional Chinese medicine Xiang-ru among confusing Elsholtzia species

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Chinese Journal of Natural Medicines 2024年第4期22卷 375-384页

作者： ZENG Zhen ZHANG Chen HU Jiadong WANG Feiyan WU Ziding WANG Jing ZHANG Jun YANG Shuda CHEN Junfeng LI Mingming TONG Qi QIU Shi CHEN Wansheng The SATCM Key Laboratory for New Resources&Quality Evaluation of Chinese Medicine Institute of Chinese Materia MedicaShanghai University of Traditional Chinese MedicineShanghai 201203China department of Pharmacy Second Affiliated Hospital of Navy Medical UniversityShanghai 200003China Kunming plant Classification Biotechnology Co. Ltd.Kunming 650500China School of Pharmaceutical sciences and Yunnan Key Laboratory of Pharmacology for Natural Products Kunming Medical UniversityKunming 650500China State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs Beijing100700China

The aerial parts of Mosla chinensis Maxim.and Mosla chinensis cv.'Jiangxiangru'(MCJ)are widely utilized in traditional Chinese medicine(TCM),known collectively as Xiang-ru.However,due to clinical effectiveness concerns and frequent misidentification,the original plants have increasingly been substituted by various species within the genera Elsholtzia and Mosla.The challenge in distinguishing between these genera arises from their similar morphological and metabolic profiles.To address this issue,our study introduced a rapid method for metabolic characterization,employing high-resolution mass spectrometry-based metabolomics.Through detailed biosynthetic and chemometric analyses,we pinpointed five phenolic compounds—salviaflaside,cynaroside,scutellarein-7-O-D-glucoside,rutin,and vicenin-2—among 203 identified compounds,as reliable chemical markers for distinguishing Xiang-ru from closely related Elsholtzia species.This methodology holds promise for broad application in the analysis of plant aerial parts,especially in verifying the authenticity of aromatic traditional medicinal plants.Our findings underscore the importance of non-volatile compounds as dependable chemical markers in the authentication process of aromatic traditional medicinal plants.

关键词： Genus Elsholtzia Genus Mosla Traditional Chinese medicine Xiang-ru Non-volatile phenolic compounds Liquid chromatography-mass spectrometry

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Optimization Algorithms of PERT/CPM Network Diagrams in Linear Diophantine Fuzzy Environment

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Computer Modeling in Engineering & sciences 2024年第4期139卷 1095-1118页

作者： Mani Parimala Karthikeyan Prakash Ashraf Al-Quran Muhammad Riaz Saeid Jafari department of Mathematics Bannari Amman Institute of TechnologySathyamangalamTamil Nadu638401India Basic sciences department Preparatory Year DeanshipKing Faisal UniversityAl-Ahsa31982Saudi Arabia department of Mathematics University of the PunjabLahorePakistan College of Vestsjaelland South Herrestraede 11Slagelse4200Denmark

The idea of linear Diophantine fuzzy set(LDFS)theory with its control parameters is a strong model for machine learning and optimization under uncertainty.The activity times in the critical path method(CPM)representation procedures approach are initially static,but in the Project Evaluation and Review Technique(PERT)approach,they are probabilistic.This study proposes a novel way of project review and assessment methodology for a project network in a linear Diophantine fuzzy(LDF)environment.The LDF expected task time,LDF variance,LDF critical path,and LDF total expected time for determining the project network are all computed using LDF numbers as the time of each activity in the project network.The primary premise of the LDF-PERT approach is to address ambiguities in project network activity timesmore simply than other approaches such as conventional PERT,Fuzzy PERT,and so on.The LDF-PERT is an efficient approach to analyzing symmetries in fuzzy control systems to seek an optimal decision.We also present a new approach for locating LDF-CPM in a project network with uncertain and erroneous activity timings.When the available resources and activity times are imprecise and unpredictable,this strategy can help decision-makers make better judgments in a project.A comparison analysis of the proposed technique with the existing techniques has also been discussed.The suggested techniques are demonstrated with two suitable numerical examples.

关键词： Linear Diophantine fuzzy graphs project management PERT CPM linear Diophantine fuzzy numbers score function accuracy function

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Effect of Aqueous-Alcoholic Extract of Ducrosia Anethifolia Boiss on the Fetal Liver of Diabetic Rats

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World Journal of Traditional Chinese Medicine 2024年第1期10卷 104-113页

作者： Hossein Kargar Jahromi Farangis Ghasemi Elmira Mikaeiliagah Research Center for Noncommunicable Diseases Jahrom University of Medical SciencesJahromIran department of Biology Islamic Azad UniversityJahromIran department of Biology Ardabil BranchIslamic Azad UniversityArdabilIran Stem Cell and Tissue Engineering Laboratory Department of OrthopaedicsWest Virginia UniversityMorgantownUSA

Objective:Moshgak(Ducrosia anethifolia)is a wild plant with medicinal value.The present study aimed to evaluate the effect of Moshgak on the liver tissue of the diabetic rat fetus.Materials and Methods:In this animal study,the aqueous-alcoholic extract of Moshgak was prepared in the standard method.Forty rats were divided randomly into five groups,including control,sham,and three diabetic groups.The rats were diabetic with intraperitoneal injection of a single dose of streptozotocin(80 mg)and 2 diabetic groups were treated with Moshgak extract(280 and 560 mg/kg/bw)for 19 days.The rats were anesthetized and their blood was taken to measure the blood glucose,insulin,and malondialdehyde.Then,their fetuses were removed.The fetal liver sections were obtained by using the stereological methods.The micrometry of the liver tissue was performed and data were analyzed.Results:The finding showed a statistically significant increase(P<0.01)in the total volume of liver,connective tissue,sinusoid,and hepatocytes in diabetic rats compared to control rats,while these parameters decreased significantly in treated groups with Moshgak.Hepatic cell count hepatic decreased in the treated groups.Furthermore,the changes in blood glucose,malondialdehyde,and insulin in diabetic rats were improved significantly by Moshgak treatment.The dilation of sinusoids,hepatocyte vacuolation,and mild lymphocytosis was observed in all diabetic groups except the treatment group with Moshgak 560 mg/kg/bw.Conclusions:According to obtained results,Moshgak extract was able to compensate partially the changes induced by diabetes in the fetal liver tissue.Therefore,due to the side effects of diabetes during pregnancy,further research on anti-diabetic properties of Moshgak is suggested.

关键词： Diabetes Ducrosia anethifolia hepatocyte insulin micrometry rat

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The WAK-like protein RFO1 acts as a sensor of the pectin methylation status in Arabidopsis cell walls to modulate root growth and defense

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Molecular plant 2023年第5期16卷 865-881页

作者： Apolonio I.Huerta Gloria Sancho-Andre´s Juan Carlos Montesinos Javier Silva-Navas Sole`ne Bassard Corinne Pau-Roblot Christopher Kesten Rudolf Schlechter Susanne Dora Temurkhan Ayupov Je´rome Pelloux^ Julia Santiago Clara Sa´nchez-Rodrı´guez ETH Zurich Institute of Molecular Plant Biology(D-BIOL)ZurichSwitzerland University of Lausanne Department of Plant Molecular BiologyLausanneSwitzerland UMRT INRAE 1158 BioEcoAgro–BIOPI Biologie des plantes et Innovation Universite´de Picardie33 Rue St Leu80039 AmiensFrance present address:Lonza AG VispVisSwitzerland present address:Institute of Microbiology Freie Universitat BerlinBerlinGermany present address:Institute of Molecular and Clinical Ophthalmology-Basel BaselSwitzerland present address:Centro de Biotecnologı´a y Geno´mica de plantas Universidad Polite´cnica de Madrid(UPM)–Instituto Nacional de Investigacio´n y Tecnologı´a Agraria y Alimentaria(INIA/CSIC)Campus de Montegancedo UPM28223 Pozuelo de Alarco´nSpain

Most organisms adjust their development according to the environmental conditions.For the majority,this implies the sensing of alterations to cell walls caused by different cues.Despite the relevance of this process,few molecular players involved in cell wall sensing are known and characterized.Here,we show that the wall-associated kinase-like protein RESISTANCE TO FUSARIUM OXYSPORUM 1(RFO1)is required for plant growth and early defense against Fusarium oxysporum and functions by sensing changes in the pectin methylation levels in the cell wall.The RFO1 dwell time at the plasma membrane is affected by the pectin methylation status at the cell wall,regulating MITOGEN-ACTIVATED PROTEIN KINASE and gene expression.We show that the extracellular domain of RFO1 binds de-methylated pectin in vitro,whose distribution in the cell wall is altered during F.oxysporum infection.Further analyses also indicate that RFO1 is required for the BR-dependent plant growth alteration in response to inhibition of pectin de-methyl-esterase activity at the cell wall.Collectively,our work demonstrates that RFO1 is a sensor of the pectin methylation status that plays a unique dual role in plant growth and defense against vascular pathogens.

关键词： alterations walls pectin

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