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| 1 | The temporal dynamics of antimicrobial-resistant Salmonella enterica and predominant serovars in China显示文摘Salmonella enterica is one of the most common bacterial pathogens in humans and animals.Systematic studies on the trends and geographical distribution of antimicrobial-resistant Salmonella and dominant serovars have been well studied in European and American countries while not in China.Here,taking the One-Health strategy,we used>35000 Salmonella enterica isolates to explore the temporal and spatial dynamics of dominant serovars in China.We found that Salmonella Typhimurium was the dominant serovar causing human infection in China,which was consistent with Australia but inconsistent with North American and European countries.The proportion of Salmonella serovars Typhimurium,London,Rissen,Corvallis,Meleagridis,Kentucky,and Goldcoast showed an increasing trend during 2006-2019.We randomly selected 1962 isolates for comparative genomics and antimicrobial resistance studies and found that the number of antibiotic resistance genes(ARGs)per isolate increased 1.84 and 2.69 times of human and non-human origins,respectively,spanning 14 years.The proportion of antimicrobial-resistant Salmonella isolates had an increasing trend during 2006-2019,especially beta-lactam,quinolone,tetracycline,and rifampicin resistance.Moreover,we found that higher diversity of sequence types(STs)in S.Typhimurium than in other serovars,ST34 from pig and ST 19 from chicken origin,were mainly associated with isolates causing child and adult gastro-infection,respectively.Our results fill in the data gap on the trends of dominant serovars and antimicrobial resistance of Salmonella enterica in China.These data provide useful information for public health decision-makers prioritizing interventions for foodborne diseases and food safety. | Yanan Wang Yue Liu Na Lyu Zhiyuan Li Sufang Ma Demin Cao Yuanlong Pan Yongfei Hu Hua Huang George F.Gao Xuebin Xu Baoli Zhu | 2023 | National Science Review2023，10，3： | 4 |
| 2 | Qos-driven SCTP-based multimedia delivery over heterogeneous wireless networks显示文摘Stream Control Transport Protocol(SCTP)-based handover is supposedly the best suit for current mobile Internet users. However, prevalent SCTP-based handover solutions mostly evaluate candidate networks by a function of multiple attributes such as available bandwidth, delay, etc., which tend to vary often in burst and might cause the instability of handover decisions. Moreover, the SCTP congestion control strategy leads to sudden degradation of users' quality of experience for multimedia streaming service because of abrupt and frequent strong fluctuations in the transmission rate. In this paper, we propose a novel QoS-driven SCTPbased handover solution(SCTP-QD) appropriate for heterogeneous wireless multimedia transmission. A new network service and transport layer QoS-aware model is designed to help SCTP-QD accurately analyze the service stability and data transmission capacity for each path. A proper QoS-driven handover decision model is introduced in SCTP-QD in order to improve the SCTP handover efficiency while reducing unnecessary handoffs and fail-over probability. A proposal is finally addressed to help SCTP-QD avoid the slow start phase whenever handover occurs. The simulation results show that SCTP-QD outperforms existing solutions in terms of data delivery performance. | CAO YuanLong XU ChangQiao GUAN JianFeng ZHANG HongKe | 2014 | Science China(Information Sciences)2014，57，10： | 2 |
| 3 | Qos-driven SCTP-based multimedia delivery over heterogeneous wireless networks显示文摘 | YUANLONG CAO CHANGQIAO XU JIANFENG GUAN | 2014 | Science China Information Sciences October2014，57，10： | 1 |
| 4 | QoE-Driven Energy-Aware Multipath Content Delivery Approach for MPTCP-Based Mobile Phones显示文摘Mobile phones equipped with multiple wireless interfaces can increase their goodput performance by making use of concurrent transmissions over multiple paths, enabled by the Multipath TCP(MPTCP). However, utilizing MPTCP for data delivery may generally result in higher energy consumption, while the battery power of a mobile phone is limited. Thus, how to optimize the energy usage becomes very crucial and urgent. In this paper, we propose MPTCP.QE, a novel quality of experience(Qo E).driven energy.aware multipath content delivery approach for MPTCP.based mobile phones. The main idea of MPTCP.QE is described as follows: it first provides an application rate.aware energy.efficient subflow management strategy to tradeoff throughput performance and energy consumption for mobile phones; then uses an available bandwidth.aware congestion window fast recovery strategy to make a sender avoid unnecessary slow.start and utilize wireless resource quickly; and further introduces a novel receiver.driven energy.efficient SACK strategy to help a receiver possible to detect SACK loss timely and trigger loss recovery in a more energy.efficient way. The simulation results show that with the MPTCP.QE, the energy usage is enhanced while the performance level is maintained compared to existing MPTCP solutions. | Yuanlong Cao Shengyang Chen Qinghua Liu Yi Zuo Hao Wang Minghe Huang | 2017 | China Communications2017，14，2： | 1 |
| 5 | Effects of Various Factors on the Modification of Carbon Nanotubes with Polyvinyl Alcohol in Supercritical CO2 and Their Application in Electrospun Fibers显示文摘 | CHEN Zhimin ZHANG Jianan GUO Yuanlong ZHANG Hao CAO Jingjing XU Qun WANG Shuxia WANG Bo LIU Zhaotie | 2014 | Chemical Research in Chinese Universities2014，30，4： | 1 |
| 6 | Background Traffic-Based Retransmission Algorithm for Multimedia Streaming Transfer over Concurrent Multipaths显示文摘 | Yuanlong Cao Changqiao Xu Jianfeng Guan Hongke Zhang János Tapolcai | 2012 | International Journal of Digital Multimedia Broadcasting2012，，： | 1 |
| 7 | Mobility and constant-orientation workspace analysis of 4UPS-UPU parallel mechanism显示文摘One of the key issues for parallel mechanism is the kinematic characteristics,especially the workspace which varies with configuration parameters.A kind of 4UPS-UPU parallel mechanism is designed and its workspace is studied in this paper.First,the mobility of the 4UPS-UPU parallel mechanism is analyzed based on the reciprocal screw theory,and the motion and constraint screw systems of the parallel mechanism are obtained.Then the inverse kinematics is derived by the closed-form kinematics chain.The boundary search method in the polar coordinate system is presented to analyze the constant-orientation workspace of the parallel mechanism.Finally,the influence factors relevant to the workspace,such as the structural parameters and kinematics parameters are analyzed in detail.The relationship between the workspace volume and different parameters are obtained.The conclusions can be used for parameters optimization and path planning of the parallel mechanism. | 雷静桃 Hu Lei Cao Yuanlong Wang Tianmiao | 2014 | High Technology Letters2014，20，2： | 0 |
| 8 | Ginkgo biloba extract protects against depression-like behavior in mice through regulating gut microbial bile acid metabolism显示文摘Depression is a mental disorder with high morbidity,disability and relapse rates.Ginkgo biloba extract(GBE),a traditional Chinese medicine,has a long history of clinical application in the treatment of cerebral and mental disorders,but the key mechanism remains incompletely understood.Here we showed that GEB exerted anti-depressant effect in mice through regulating gut microbial metabolism.GBE protected against unpredictable mild stress(UMS)-induced despair,anxiety-like and social avoidance behavior in mice without sufficient brain distribution.Fecal microbiome transplantation transmitted,while antibiotic cocktail abrogated the protective effect of GBE.Spatiotemporal bacterial profiling and metabolomics assay revealed a potential involvement of Parasutterella excrementihominis and the bile acid metabolite ursodeoxycholic acid(UDCA)in the effect of GBE.UDCA administration induced depression-like behavior in mice.Together,these findings suggest that GBE acts on gut microbiome-modulated bile acid metabolism to alleviate stress-induced depression. | ZHOU Junchi FAN Qilin CAI Xiaoying ZHANG Youying HOU Yuanlong CAO Shuqi LIZiguang FENG Mengzhen WANG Qingqing ZHANG Jianbing WANG Guangi ZHENG Xiao HAO Haiping | 2023 | Chinese Journal of Natural Medicines2023，21，10： | 0 |
| 9 | MBE:A Music Copyright Depository Framework Incorporating Blockchain and Edge Computing显示文摘Audio copyright is a crucial issue in the music industry,as it protects the rights and interests of creators and distributors.This paper studies the current situation of digital music copyright certification and proposes a music copyright certification framework based on“blockchain+edge computing mode,”abbreviated as MBE,by integrating edge computing into the Hyperledger Fabric system.MBE framework compresses and splits the audio into small chunks,performs Fast Fourier Transform(FFT)to extract the peak points of each frequency and combines them to obtain unique audio fingerprint information.After being confirmed by various nodes on the Fabric alliance chain,audio fingerprint information and copyright owner information are recorded on the chain and broadcast to all participants.Blockchain technology’s characteristics of being tamper-proof and traceable not only reform the trust mechanism of copyright protection but also endow edge computing with the ability to resist tampering and single-point attack,greatly enhancing the robustness of the music copyright certification system.Meanwhile,edge computing mode improves Fabric blockchain’s processing speed and transaction throughput.Experimental results show that MBE’s performance is better than traditional systems regarding efficiency,storage demand and security.Compared to the traditional Fabric system without edge computing mode,MBE exhibits a 53%higher deposition efficiency and a 48%lower storage space requirement. | Jianmao Xiao Ridong Huang Jiangyu Wang Zhean Zhong Chenyu Liu Yuanlong Cao Chuying Ouyang | 2023 | Computer Systems Science & Engineering2023，47，12： | 0 |
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