|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Emergence and prevalence of naturally occurring lower virulent African swine fever viruses in domestic pigs in China in 2020显示文摘African swine fever virus(ASFV)has been circulating in China for more than two years,and it is not clear whether the biological properties of the virus have changed.Here,we report on our surveillance of ASFVs in seven provinces of China,from June to December,2020.A total of 22 viruses were isolated and characterized as genotype II ASFVs,with mutations,deletions,insertions,or short-fragment replacement occurring in all isolates compared with Pig/HLJ/2018(HLJ/18),the earliest isolate in China.Eleven isolates had four different types of natural mutations or deletion in the EP402R gene and displayed a nonhemadsorbing(non-HAD)phenotype.Four isolates were tested for virulence in pigs;two were found to be as highly lethal as HLJ/18.However,two non-HAD isolates showed lower virulence but were highly transmissible;infection with 106 TCID50 dose was partially lethal and caused acute or sub-acute disease,whereas 103 TCID50 dose caused non-lethal,sub-acute or chronic disease,and persistent infection.The emergence of lower virulent natural mutants brings greater difficulty to the early diagnosis of ASF and creates new challenges for ASFV control. | Encheng Sun Zhenjiang Zhang Zilong Wang Xijun He Xianfeng Zhang Lulu Wang Wenqing Wang Lianyu Huang Fei Xi Haoyue Huangfu Ghebremedhin Tsegay Hong Huo Jianhong Sun Zhijun Tian Wei Xia Xuewu Yu Fang Li Renqiang Liu Yuntao Guan Dongming Zhao Zhigao Bu | 2021 | Science China(Life Sciences)2021，64，5： | 46 |
| 2 | Effects of acupuncture in treating insomnia due to spleen-stomach disharmony syndrome and its influence on intestinal microbiome: Study protocol for a randomized controlled trial显示文摘Background: Insomnia is a common complaint that is closely related to gastrointestinal symptoms, which is consistent with the traditional Chinese medicine classical theory of ‘‘stomach disharmony leading to restless sleep.' Acupuncture is an effective complementary and alternative medicine therapy to improve gastrointestinal function and restore the normal sleep-wake cycle. However, studies on the effectiveness of acupuncture for insomnia due to spleen-stomach disharmony syndrome are limited to case reports and few randomized controlled trials; deeper research on its mechanism is still lacking. This randomized controlled trial aims to assess the treatment efficacy of ‘‘harmonizing stomach to tranquilize mind'acupuncture for insomnia and its influence on the intestinal microbiome.Methods/design: This is a randomized, single-blind, parallel-group study. Sixty eligible patients with insomnia due to spleen-stomach disharmony syndrome will be randomly divided into two groups(1:1 allocation ratio). The intervention group will use ‘‘harmonizing stomach to tranquilize mind'acupuncture, and the control group will receive sham acupuncture. Participants will receive 5 acupuncture treatment sessions per week for 4 consecutive weeks. The Pittsburgh Sleep Quality Index will be used to evaluate the clinical efficacy of acupuncture treatment by making assessments at baseline, the end of treatment and the end of the follow-up. High-throughput 16 S ribosomal ribonucleic acid gene sequencing will be performed to detect changes in the intestinal microbial composition before and after treatment.Discussion: The results of this trial are expected to confirm that ‘‘harmonizing stomach to tranquilize mind' acupuncture can effectively relieve insomnia and alter the intestinal microbiome. | Ya-ru Huangfu Wei Peng Bao-jun Guo Zhi-fu Shen Li Li Shi-wei Liu Hui Zheng You-ping Hu | 2019 | Journal of Integrative Medicine2019，17，3： | 15 |
| 3 | On the designing principles and optimization approaches of bio-inspired self-organized network: a survey显示文摘A plethora of studies on self-organization has been carried out in broad areas including chemistry, biology, astronomy, medical science, telecommunications, etc., in both academia and industry. Following the studies on swarm intelligence observed in social species, the artificial self-organized systems are expected to exhibit some intelligent features (e.g., flexibility, robustness, decentralized control, self-evolution, etc.) that may have made social species so successful in the biosphere. In this paper, the application of swarm intelligence in communications networks will be studied, and we survey different aspects of bio-inspired mechanisms and examine various algorithms that have been proposed to improve the performance of artificial systems. Some fundamental self-organized networking (SON) mechanisms, designing principles and optimization approaches for artificial systems will then be investigated, followed by some well-known bio-inspired algorithms (e.g., cooperation, division of labor, distributed network synchronization, load balancing, etc.) as well as their applications to the maintenance/operation/optimization of artificial systems being analyzed. Besides, some new emerging technologies, such as the Self-X capabilities and cognitive machine-to-machine (M2M) optimization for the 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE)/LTE-Advanced systems, are also surveyed. Finally, the remaining challenges to be faced in designing the future heterogeneous systems will be discussed. | ZHANG ZhongShan HUANGFU Wei LONG KePing ZHANG Xu LIU XiaoYuan ZHONG Bin | 2013 | Science China(Information Sciences)2013，56，7： | 9 |
| 4 | Survivability-oriented optimal node density for randomly deployed wireless sensor networks显示文摘The survivability is usually critical for wireless sensor networks,which are often deployed in the unattended harsh environment.Lots of technical schemes to improve the survivability depend on the redundant resources of the sensor networks.The amount of resources is usually determined by the node density during the deployment phase.For the random deployment and random node failures,the quantitative relation between the survivability and the node density is studied.Based on the conditional survivability,the node density to meet the required survivability level is presented.Finally,the survivability for unpredictable failures and the optimal node density to maximize the price–performance ratio are also discussed. | HUANGFU Wei ZHANG ZhongShan CHAI XiaoMeng LONG KePing | 2014 | Science China(Information Sciences)2014，57，2： | 5 |
| 5 | A high-accuracy nonintrusive networking tested for wireless sensor networks显示文摘 | WEI Huangfu SUN Limin LIU Jiangchuan | 2010 | EURASIP Journal on Wireless Communications and Networking2010，，64： | 1 |
| 6 | Does Amplify-and-Forward Cooperative Relay Improve OFDM/OFDMA Ergodic Capacity?显示文摘The ergodic information rate for Orthogonal Frequency-Division Multiplexing/ Orthogonal Frequency-Division Multiple Access with amplify-and-forward(AF)relaying systems in the presence of frequency offsets is evaluated.Unlike previous work,per-subcarrier adaptive power allocation is performed on each relay to optimize the system ergodic information rate.For a given frequency offset and total number of relays M,the AF ergodic information rate is proven to be a monotonically increasing function of a(the ratio of the power allocated to the source node and the total transmit power),implying that the maximum ergodic information rate can be obtained at α=1(i.e.,there is no cooperative relay).Furthermore,the proof of 'cooperative relays cannot improve the AF ergodic information rate in a quasi-static wireless channel' is also provided in this letter. | HUANGFU Wei ZHANG Zhongshan ZHANG Dandan LONG Keping | 2014 | China Communications2014，11，2： | 1 |
| 7 | Leader-following flocking for unmanned aerial vehicle swarm with distributed topology control显示文摘To address the flocking issues of an unmanned aerial vehicle(UAV)swarm operating at a leader-follower mode,distributed control protocols comprising both kinetic controller and topology control algorithm must be implemented.For flocking the UAV swarm,a distributed control-input method is required forboth maintaining a relatively steady state between neighboring vehicles(including velocity matching and distance maintenance)and avoiding vehicle-to-vehicle collision.Furthermore,the stability of control protocols should be analyzed using the potential energy function.In particular,a distributedβ-angle test(BAT)rule in the proposed topology-control issue may allow each UAV to determine its neighboring set by exploiting the locally sensed information,thereby significantly reducing the communication overhead of the entire swarm.In addition,node-degree bound is derived to demonstrate the feasibility of the proposed algorithm,in which the optimal value in terms of convergence is analyzed.The flocking of the flying ad-hoc network(FANET)can be achieved in a self-organizing way without the use of an external control center via the distributed control protocols.Ultimately,the proposed analysis is verified by numerical results. | Chao LIU Meng WANG Qian ZENG Wei HUANGFU | 2020 | Science China(Information Sciences)2020，63，4： | 1 |
| 8 | Sea Route Monitoring System Using Wireless Sensor Network Based on the Data Compression Algorithm显示文摘 | LI Yang ZHANG Zhongshan HUANGFU Wei CHAI Xiaomeng ZHU Xinpeng ZHU Hongliang | 2014 | China Communications2014，11，A01： | 0 |
| 9 | Patterning two-dimensional semiconductors with thermal etching显示文摘The controllable synthesis of complicated nanostructures in advanced two-dimensional(2D)semiconductors,such as periodic regular hole arrays,is essential and remains immature.Here,we report a green,facile,highly controlled synthetic method to efficiently pattern 2D semiconductors,such as periodic regular hexagonal-shaped hole arrays(HHA),in 2D-TMDs.Combining the production of artificial defect arrays through laser irradiation with anisotropic annealing etching,we created HHA with different arrangements,controlled hole sizes,and densities in bilayer WS_(2).Atomic force microscopy(AFM),Raman,photoluminescence(PL),and scanning transmission electron microscopy(STEM)characterization show that the 2D semiconductors have high quality with atomical clean and sharp edges as well as undamaged crystals in the unetched region.Furthermore,other nanostructures,such as nanoribbons and periodic regular triangular-shaped 2D-TMD arrays,can be fabricated.This kind of 2D semiconductors fabrication strategy is general and can be extended to a series of 2D materials.Density functional theory(DFT)calculations show that one WS_(2)molecule from the edges of the laser-irradiated holed region exhibits a robust etching activation,making selective etching at the artificial defects and the fabrication of regular 2D semiconductors possible. | Miaomiao Liu Ziwei Huang Yukun Guo Zhengwei Zhang Liqiang Zhang Hongmei Zhang Jiang Zhong Shanhao Li Wei Deng Di Wang Wei Li Ying Huangfu Xiangdong Yang Xidong Duan | 2023 | InfoMat2023，5，11： | 0 |
| 10 | Theoretical and numerical analyses for PDM-IM signals using Stokes vector receivers显示文摘Different from current coherent-detection-based long-haul transmission systems,inter-and intradatacenter transmissions require a simpler transmitter and receiver.A promising way to significantly meet the demands of datacenter transmission is polarization division multiplexing intensity modulation with direct detection(PDM-IM-DD)using a Stokes vector receiver(SVR).However,for different SVR architectures,the corresponding demultiplexing matrix is required to recover the Stokes vectors from the detected signals,which are combined with an arbitrary state of polarization(SOP),will change the effect of noise dynamically and significantly influence the system performance.In this study,PDM-IM signals using four SVRs,i.e.,a 90°optical hybrid with 2 balanced photodetectors(BPDs)and 2 photodetectors(PDs),a 90?optical hybrid with 4 PDs,a Stokes analyzer and a 3×3 coupler with 4 PDs,are studied theoretically and numerically.Theoretical system models using the four SVRs are developed,and the noise power variations are analyzed quantitatively based on these models.Moreover,the performance of the systems is also investigated for 224 Gbit/s polarization division multiplexing pulse amplitude modulation 4 level with direct detection(PDM-PAM4-DD)transmission in a simulation.The simulation results show that the bit error rate(BER)performance of the systems is consistent with the theoretical noise power variation curves.The theoretical analysis scheme is helpful for the practical design of SVR-based systems. | Jiahao HUO Xian ZHOU Chao SHANG Wei HUANGFU Jinhui YUAN Huansheng NING Keping LONG Changyuan YU Alan Pak Tao LAU Chao LU | 2020 | Science China(Information Sciences)2020，63，10： | 0 |
| 11 | Causal relationships between chronotype and risk of multiple cancers by using longitudinal data and Mendelian randomization analysis显示文摘Dear Editor,Cancer is the second leading cause of death worldwide,and the cancer situation is becoming more complicated(Zhou et al.,2022).The International Agency for Research on Cancer(IARC)Monographs Working Group classified night shift work as probably carcinogenic(Group 2A)to humans in2019(Ward et al.,2019). | Shanshan Tian Longtao Huangfu Sizhi Ai Junwei Zheng Le Shi Wei Yan Ximei Zhu Qianwen Wang Jiahui Deng Yanping Bao Suhua Chang Lin Lu | 2023 | Science China(Life Sciences)2023，66，10： | 0 |
| 12 | 《涉过愤怒的海》学术研讨会发言摘要显示文摘2024年1月5日,影片《涉过愤怒的海》学术研讨会在北京电影学院海淀校区召开。研讨会由北京电影学院中国电影文化研究院执行院长、《北京电影学院学报》主编吴冠平教授主持。曹保平导演及各位专家学者分别从创作、学术以及票房市场等多个角度阐发了各自的观点。 | Cao Baoping Rao Shuguang Huangfu Yichuan Chen Xuguang Li Yang Zhang Wei Zhong Dafeng Sun Chengjian Zuo Heng Sai Ren Hu Jianli Li Xingwen | 2024 | 北京电影学院学报2024，，1： | 0 |
| 13 | A Mixture Model Parameters Estimation Algorithm for Inter-Contact Times in Internet of Vehicles显示文摘Communication opportunities among vehicles are important for data transmission over the Internet of Vehicles(IoV).Mixture models are appropriate to describe complex spatial-temporal data.By calculating the expectation of hidden variables in vehicle communication,Expectation Maximization(EM)algorithm solves the maximum likelihood estimation of parameters,and then obtains the mixture model of vehicle communication opportunities.However,the EM algorithm requires multiple iterations and each iteration needs to process all the data.Thus its computational complexity is high.A parameter estimation algorithm with low computational complexity based on Bin Count(BC)and Differential Evolution(DE)(PEBCDE)is proposed.It overcomes the disadvantages of the EM algorithm in solving mixture models for big data.In order to reduce the computational complexity of the mixture models in the IoV,massive data are divided into relatively few time intervals and then counted.According to these few counted values,the parameters of the mixture model are obtained by using DE algorithm.Through modeling and analysis of simulation data and instance data,the PEBCDE algorithm is verified and discussed from two aspects,i.e.,accuracy and efficiency.The numerical solution of the probability distribution parameters is obtained,which further provides a more detailed statistical model for the distribution of the opportunity interval of the IoV. | Cheng Gong Xinzhu Yang Wei Huangfu Qinghua Lu | 2021 | Computers, Materials & Continua2021，，11： | 0 |
| 14 | Mitigation of Optical Multipath Interference Algorithms in IM-DD Transmission System显示文摘This paper aimed to propose two algorithms,DA-M and RF-M,of reducing the impact of multipath interference(MPI)on intensity modulation direct detection(IM-DD)systems,particularly for four-level pulse amplitude modulation(PAM4)systems.DA-M reduced the fluctuation by averaging the signal in blocks,RF-M estimated MPI by subtracting the decision value of the corresponding block from the mean value of a signal block,and then generated interference-reduced samples by subtracting the interference signal from the product of the corresponding MPI estimate and then weighting factor.This paper firstly proposed to separate the signal before decision-making into multiple blocks,which significantly reduced the complexity of DA-M and RF-M.Simulation results showed that the MPI noise of 28 GBaud IMDD system under the linewidths of 1e5 Hz,1e6 Hz and 10e6 Hz can be effectively alleviated. | Huo Jiahao Zhu Jin Zhu Zuqing Zhang Xiaoying Liu Shaonan Tao Jianlong Wei Huangfu | 2024 | China Communications2024，21，4： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员