The transcriptional cascade and regulatory loop play crucial roles in regulating plant-specialized metabolite biosynthesis.Capsaicinoids are unique to the genus Capsicum and confer a pungent flavor to its fruits.Howev...The transcriptional cascade and regulatory loop play crucial roles in regulating plant-specialized metabolite biosynthesis.Capsaicinoids are unique to the genus Capsicum and confer a pungent flavor to its fruits.However,the transcriptional regulation of capsaicinoid biosynthesis remains largely unknown.In this study,two AP2/ERF transcription factors(TFs),CaERF102 and CaERF111,were characterized for their role in the capsaicinoid biosynthesis process.Expression analysis of two ERFs and capsaicinoid biosynthetic genes(CBGs)suggested that they were associated with capsaicinoid biosynthesis.Both ERFs encode nuclear-localized proteins and function as transcriptional activators through their C-terminal activation motifs.The two ERF TFs participated in capsaicinoid biosynthesis by directly activating the promoters of key CBGs,and this activation was significantly enhanced when CaMYC2 was co-expressed.Moreover,CaERF102 and CaERF111 were found to interact with CaMYC2.This study helps elucidate the AP2/ERF TF regulatory network that governs capsaicinoid biosynthesis in Capsicum species.展开更多
Cell-free networks can effectively reduce interference due to diversity gain.Two key technologies,access point(AP)clustering and transceiver design,play key roles in cell-free networks,and they are implemented at diff...Cell-free networks can effectively reduce interference due to diversity gain.Two key technologies,access point(AP)clustering and transceiver design,play key roles in cell-free networks,and they are implemented at different layers of the air interface.To address the issues and obtain global optimal results,this paper proposes an uplink joint AP clustering and receiver optimization algorithm,where a cross-layer optimization model is built based on graph neural networks(GNNs)with low computational complexity.Experimental results show that the proposed algorithm can activate fewer APs for each user with a small performance loss compared with conventional algorithms.展开更多
To gain insight into the fine interfacial control mechanism exhibited by oxidant-coated Al powder to improve combustion performance,we prepared Al/AP and Al@AP composite fuels using ball milling and spray-drying techn...To gain insight into the fine interfacial control mechanism exhibited by oxidant-coated Al powder to improve combustion performance,we prepared Al/AP and Al@AP composite fuels using ball milling and spray-drying technology.The thermal reaction characteristics,AP decomposition behavior,and decomposition reaction pathways of Al/AP and Al@AP composite fuels were investigated using thermal analysis and Ab Initio Molecular Dynamics(AIMD)calculations.Under the influence of fine interfacial control,the low-temperature decomposition heat release peak of AP was delayed by 25.5℃,while the high-temperature decomposition peak was advanced by 36.2℃,leading to an increase in the decomposition heat release of AP from 410.7 J/g to 1068.7 J/g.Compared to the unclad structure,the apparent activation energy of AP in low-temperature decomposition increased,and slightly decreased during high-temperature decomposition in the Al@AP composite fuel.The physical model of AP decomposition shifted to the model with higher degrees of freedom and a faster diffusion rate,characterized by rapid bidirectional diffusion at the interface.Furthermore,due to fine interfacial control,the oxidation reaction pathway of Al has been altered,changing from the final products of AP decomposition(O_(2),Cl2,etc.)to the direct oxidation of AP decomposition intermediates(HClO,ClO_(2),etc.).This accelerated and strengthened the oxidation reaction process of Al.As a result of these performance improvements,the final combustion temperature of Al@AP in the Microcanonical Ensemble(NVE)system stabilized at 2370 K,which is significantly higher than 1400 K observed for Al/AP,indicating enhanced ignition and combustion performance.展开更多
The ,Aspoe Pillar Stability Experiment （APSE） is an in situ experiment for investigating the spalling mechanism under mechanical and thermal loading conditions in a crystalline rock. In this study, the thermo-mechan...The ,Aspoe Pillar Stability Experiment （APSE） is an in situ experiment for investigating the spalling mechanism under mechanical and thermal loading conditions in a crystalline rock. In this study, the thermo-mechanical behaviors in the APSE were investigated with three models： （1） a Full model with rough meshes for calculating the influence of tunnel excavation; （2） a Submodel with fine meshes for predicting the thermo-mechanical behavior in the pillar during the borehole drilling, heating, and cool- ing phases; and （3） a Thin model for modeling the effect of slot cutting for de-stressing around the pillar. In order to import the stresses calculated from the Full model to the Submodel and to define the complex thermal boundary conditions, artificial neural networks （NNs） were utilized. From this study, it was pos- sible to conclude that the stepwise approach with the application of NNs was useful for predicting the complex response of the pillar under severe thermo-mechanical loading conditions.展开更多
印刷企业为防止订单状况多、管控疏漏等问题,提升生产效率,大多引入高级计划排程APS(Advanced Planning and Scheduling)系统,全盘考虑印刷企业内外资源与能力,实现企业生产管理的全局优化目标。本文论述并讨论了APS高级计划排程系统在...印刷企业为防止订单状况多、管控疏漏等问题,提升生产效率,大多引入高级计划排程APS(Advanced Planning and Scheduling)系统,全盘考虑印刷企业内外资源与能力,实现企业生产管理的全局优化目标。本文论述并讨论了APS高级计划排程系统在软包装印刷企业中的应用情况和发展趋势,并针对APS在软包装印刷企业中的应用,提出了基于系统集成和生产线建模的APS印刷车间场景建模方法,希望能对未来的相关研究起到借鉴作用。展开更多
TE-Unlicensed(LTE-U)network is a type of cellular communication network operating the unlicensed spectrum.Offloading cellular traffic to WiFi or Device-to-Device(D2D)network can lead to interference among them.Applyin...TE-Unlicensed(LTE-U)network is a type of cellular communication network operating the unlicensed spectrum.Offloading cellular traffic to WiFi or Device-to-Device(D2D)network can lead to interference among them.Applying Multiple-Input Multiple-Output(MIMO)technology in Cellular Base Station(CBS)and WiFi Access Point(WAP)can effectively reduce interference among D2D,WiFi and cellular networks.To our best knowledge,there is still no literature to explicitly study the characteristics of the traffic offloading in the Multiple-User MIMO(MU-MIMO)enabled network coexisting with D2D and WiFi networks.In this article,we thoroughly investigate the impact of D2D communication and MU-MIMO enabled WAP and CBS on the performance of the LTE-U network.More specifically,we derive the expressions of the downlink rates for cellular users,D2D users,and WiFi users with incomplete Channel State Information(CSI)feedback,and we validate our analysis through Monte-Carlo simulation.Numerous results illustrate the following conclusions.(ⅰ)Increasing the number of WiFi users,the length of CSI feedback,and the quantity of D2D pairs that reuse the channel with a single cellular user can increase the total throughput of the heterogeneous network.(ⅱ)The total throughput decreases when more than two users are offloaded to D2D pairs,and increases as the number of offloaded users increases when less than six users are offloaded to WiFi network.(ⅲ)Simultaneously offloading traffic to D2D pairs and WiFi network can obtain higher total throughput than offloading traffic to only one of them.展开更多
基于RSSI(Received Signal Strength Indication)位置指纹的Wi-Fi室内定位现已被大量应用于各类基于位置信息的服务中。但指纹定位的精度受到RSSI信号的剧烈波动影响,难以满足高精度位置信息服务的需求。为克服该困难,提出一种结合虚拟A...基于RSSI(Received Signal Strength Indication)位置指纹的Wi-Fi室内定位现已被大量应用于各类基于位置信息的服务中。但指纹定位的精度受到RSSI信号的剧烈波动影响,难以满足高精度位置信息服务的需求。为克服该困难,提出一种结合虚拟AP技术与高精度CNN(Convolutional Neural Network)判别模型的定位方法。该方法通过距离比定位得到虚拟AP的位置,并将该信息与RSSI融合作为数据增强CNN模型的输入,确定样本的位置。设计实验方案采集实际的用户终端RSSI数据,构建指纹定位的数据集,验证所提出的指纹定位方案的有效性。实验结果表明,在该数据集上,所提出的方法在确定区域时的准确度达到91%,并将95%的定位误差控制在2 m以内。对比现有的定位方案,所提出的方案在定位精度上有显著提升。展开更多
基金funded by the National Natural Science Foundation of China(Grant Nos.32202502,U21A20230,32070331,32102380 and 32072580)National Key Research and Development Program(Grant No.2018YFD1000800)+3 种基金the Key-Area Research and Development Program of Guangdong Province(Grant No.2022B0202080001)the Special Fund for Seed Industry of Guangdong Province Rural Revitalization Strategy(Grant No.2022-NPY00-024)Tibet Autonomous Region of Lhasa City Science and Technology Project(Grant No.LSKJ202310)the Science and Technology Project of Bijie City(Grant No.BKK2022-3)。
文摘The transcriptional cascade and regulatory loop play crucial roles in regulating plant-specialized metabolite biosynthesis.Capsaicinoids are unique to the genus Capsicum and confer a pungent flavor to its fruits.However,the transcriptional regulation of capsaicinoid biosynthesis remains largely unknown.In this study,two AP2/ERF transcription factors(TFs),CaERF102 and CaERF111,were characterized for their role in the capsaicinoid biosynthesis process.Expression analysis of two ERFs and capsaicinoid biosynthetic genes(CBGs)suggested that they were associated with capsaicinoid biosynthesis.Both ERFs encode nuclear-localized proteins and function as transcriptional activators through their C-terminal activation motifs.The two ERF TFs participated in capsaicinoid biosynthesis by directly activating the promoters of key CBGs,and this activation was significantly enhanced when CaMYC2 was co-expressed.Moreover,CaERF102 and CaERF111 were found to interact with CaMYC2.This study helps elucidate the AP2/ERF TF regulatory network that governs capsaicinoid biosynthesis in Capsicum species.
基金supported in part by National Natural Science Foundation of China under Grant No.62171474。
文摘Cell-free networks can effectively reduce interference due to diversity gain.Two key technologies,access point(AP)clustering and transceiver design,play key roles in cell-free networks,and they are implemented at different layers of the air interface.To address the issues and obtain global optimal results,this paper proposes an uplink joint AP clustering and receiver optimization algorithm,where a cross-layer optimization model is built based on graph neural networks(GNNs)with low computational complexity.Experimental results show that the proposed algorithm can activate fewer APs for each user with a small performance loss compared with conventional algorithms.
基金co-supported by the National Natural Science Foundation of China(Nos.52176099 and 52306130)the Applied Basic Research Project of Changzhou City,China(No.CJ20235033)the High-Performance Computation Laboratory of Hefei and Changzhou University,China.
文摘To gain insight into the fine interfacial control mechanism exhibited by oxidant-coated Al powder to improve combustion performance,we prepared Al/AP and Al@AP composite fuels using ball milling and spray-drying technology.The thermal reaction characteristics,AP decomposition behavior,and decomposition reaction pathways of Al/AP and Al@AP composite fuels were investigated using thermal analysis and Ab Initio Molecular Dynamics(AIMD)calculations.Under the influence of fine interfacial control,the low-temperature decomposition heat release peak of AP was delayed by 25.5℃,while the high-temperature decomposition peak was advanced by 36.2℃,leading to an increase in the decomposition heat release of AP from 410.7 J/g to 1068.7 J/g.Compared to the unclad structure,the apparent activation energy of AP in low-temperature decomposition increased,and slightly decreased during high-temperature decomposition in the Al@AP composite fuel.The physical model of AP decomposition shifted to the model with higher degrees of freedom and a faster diffusion rate,characterized by rapid bidirectional diffusion at the interface.Furthermore,due to fine interfacial control,the oxidation reaction pathway of Al has been altered,changing from the final products of AP decomposition(O_(2),Cl2,etc.)to the direct oxidation of AP decomposition intermediates(HClO,ClO_(2),etc.).This accelerated and strengthened the oxidation reaction process of Al.As a result of these performance improvements,the final combustion temperature of Al@AP in the Microcanonical Ensemble(NVE)system stabilized at 2370 K,which is significantly higher than 1400 K observed for Al/AP,indicating enhanced ignition and combustion performance.
基金within the context of the international DECOVALEX Project (DEvelopment of COupled models and their VALidation against EXperiments)supported by Korea Atomic Energy Research Institute (KAERI) as one of the Funding Organizations of the project,through the Nuclear Research and Development Program of KOSEF with a grant funded by MEST+3 种基金supported by Inha University Research Grant (INHA-44095-1)the support by Seoul National University (SNU)Swedish Nuclear Fuel and Waste Management Co. (SKB), Swedenprovided by SKB through its sp Pillar Stability Experiment project
文摘The ,Aspoe Pillar Stability Experiment （APSE） is an in situ experiment for investigating the spalling mechanism under mechanical and thermal loading conditions in a crystalline rock. In this study, the thermo-mechanical behaviors in the APSE were investigated with three models： （1） a Full model with rough meshes for calculating the influence of tunnel excavation; （2） a Submodel with fine meshes for predicting the thermo-mechanical behavior in the pillar during the borehole drilling, heating, and cool- ing phases; and （3） a Thin model for modeling the effect of slot cutting for de-stressing around the pillar. In order to import the stresses calculated from the Full model to the Submodel and to define the complex thermal boundary conditions, artificial neural networks （NNs） were utilized. From this study, it was pos- sible to conclude that the stepwise approach with the application of NNs was useful for predicting the complex response of the pillar under severe thermo-mechanical loading conditions.
文摘印刷企业为防止订单状况多、管控疏漏等问题,提升生产效率,大多引入高级计划排程APS(Advanced Planning and Scheduling)系统,全盘考虑印刷企业内外资源与能力,实现企业生产管理的全局优化目标。本文论述并讨论了APS高级计划排程系统在软包装印刷企业中的应用情况和发展趋势,并针对APS在软包装印刷企业中的应用,提出了基于系统集成和生产线建模的APS印刷车间场景建模方法,希望能对未来的相关研究起到借鉴作用。
基金supported by the National Natural Science Foundation of China under Grant 62071077in part by Cheng-Yu building Project(KJCXZD2020026)。
文摘TE-Unlicensed(LTE-U)network is a type of cellular communication network operating the unlicensed spectrum.Offloading cellular traffic to WiFi or Device-to-Device(D2D)network can lead to interference among them.Applying Multiple-Input Multiple-Output(MIMO)technology in Cellular Base Station(CBS)and WiFi Access Point(WAP)can effectively reduce interference among D2D,WiFi and cellular networks.To our best knowledge,there is still no literature to explicitly study the characteristics of the traffic offloading in the Multiple-User MIMO(MU-MIMO)enabled network coexisting with D2D and WiFi networks.In this article,we thoroughly investigate the impact of D2D communication and MU-MIMO enabled WAP and CBS on the performance of the LTE-U network.More specifically,we derive the expressions of the downlink rates for cellular users,D2D users,and WiFi users with incomplete Channel State Information(CSI)feedback,and we validate our analysis through Monte-Carlo simulation.Numerous results illustrate the following conclusions.(ⅰ)Increasing the number of WiFi users,the length of CSI feedback,and the quantity of D2D pairs that reuse the channel with a single cellular user can increase the total throughput of the heterogeneous network.(ⅱ)The total throughput decreases when more than two users are offloaded to D2D pairs,and increases as the number of offloaded users increases when less than six users are offloaded to WiFi network.(ⅲ)Simultaneously offloading traffic to D2D pairs and WiFi network can obtain higher total throughput than offloading traffic to only one of them.
