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| 1 | Analysis and prediction of loudspeaker large-signal symptoms显示文摘Nonlinear lumped-parameter force factor Bl(x), stiffness Kms(x) and inductance Le(x) of electrodynamic loudspeakers change frequency responses and generate some nonlinear effects for large stimulus: harmonic and intermodulation distortion, DC component in diaphragm displacement, instability of vibration and jumping effects. By modeling the nonlinear system under large-signal conditions, relationship between the nonlinear parameters and large-signal behavior can be revealed and help to provide guidance to diagnose loudspeakers. Agreement between the measured and predicted responses of a real loudspeaker validates the modeling and enables new methods for loudspeaker diagnosis. | HENG Wei SHEN Yong XIA Jie FENG ZiXin LIU YunFeng | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，7： | 3 |
| 2 | Nonlinear behavior of electrodynamic loudspeaker suspension at low frequencies显示文摘The suspension of electrodynamic loudspeakers includes a surround of the cone and a spider, and it is characterized by the mechanic stiffness in the lumped-parameter model. By solving the nonlinear differential equation of motion which considers the nonlinearity of suspension at low frequencies numerically and measuring different kinds of surrounds and spiders, the nonlinear behavior of suspension is theoretically and experimentally studied. Since the nonlinear stiffness of spiders and surrounds can be measured and fitted respectively before assembled into loudspeakers, which spider works best with which surround is studied. The performance of loudspeakers such as harmonic distortion based on the nonlinear parameters can be predicted. | FENG ZiXin SHEN Yong HENG Wei LIU YunFeng | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，7： | 2 |
| 3 | On intuitionistic fuzzy subspaces显示文摘 | Zixin Liu Cheng Zhang Enmin Feng | 2004 | Advances in Systems Science and Applications2004，4，2： | 1 |
| 4 | Disease resistance conferred by components of essential chrysanthemum oil and the epigenetic regulation of OsTPS1显示文摘The sesquiterpene alpha-bisabolol is the predominant active ingredient in essential oils that are highly valued in the cosmetics industry due to its wound healing,anti-inflammatory,and skin-soothing properties.Alpha-bisabolol was thought to be restricted to Compositae plants.Here we reveal that alpha-bisabolol is also synthesized in rice,a non-Compositae plant,where it acts as a novel sesquiterpene phytoalexin.Overexpressing the gene responsible for the biosynthesis of alpha-bisabolol,Os TPS1,conferred bacterial blight resistance in rice.Phylogenomic analyses revealed that alpha-bisabolol-synthesizing enzymes in rice and Compositae evolved independently.Further experiments demonstrated that the natural variation in the disease resistance level was associated with differential transcription of Os TPS1 due to polymorphisms in its promoter.We demonstrated that Os TPS1 was regulated at the epigenetic level by JMJ705 through the methyl jasmonate pathway.These data reveal the cross-family accumulation and regulatory mechanisms of alpha-bisabolol production. | Chuansong Zhan Long Lei Hao Guo Shen Zhou Congping Xu Zixin Liu Zichen Wu Yuan Deng Yuanyuan Miao Yu Han Meng Zhang Hua Li Sishu Huang Chenkun Yang Feng Zhang Yufei Li Ling Liu Xianqing Liu Hafiz Muhammad Khalid Abbas Alisdair R.Fernie Meng Yuan Jie Luo | 2023 | Science China(Life Sciences)2023，66，5： | 1 |
| 5 | On Intuitionistic fuzzy Subspaces显示文摘 | Liu Zixin Zhang Cheng Feng Enmin | 2004 | Advances in Systems Science and Applications2004，4，2： | 1 |
| 6 | On factorization of certain entire function显示文摘OnfactorizationofcertainentirefunctionFengZixin(DepartmentofMathematics,SouthwestChinaNormalUniversity,Chongqing630715)Onfact... | Feng Zixin(Department of Mathematics, Southwest China Normal University , Chongqing 630715) | 1995 | 西南师范大学学报(自然科学版)1995，20，4： | 0 |
| 7 | Optimal consumption and portfolio selection with Epstein–Zin utility under general constraints显示文摘The paper investigates the consumption–investment problem for an investor with Epstein–Zin utility in an incomplete market.Closed but not necessarily convex constraints are imposed on strategies.The optimal consumption and investment strategies are characterized via a quadratic backward stochastic differential equation(BSDE).Due to the stochastic market environment,solutions to this BSDE are unbounded,so the BMO argument breaks down.After establishing the martingale optimality criterion and carefully selecting Lyapunov functions,the verification theorem is ultimately obtained.In addition,several examples and numerical simulations of optimal strategies are provided and illustrated. | Zixin Feng Dejian Tian | 2023 | Probability, Uncertainty and Quantitative Risk2023，8，2： | 0 |
| 8 | Well-structured 3D channels within GO-based membranes enable ultrafast wastewater treatment显示文摘Graphene oxide(GO)-based membranes have been widely studied for realizing efficient wastewater treatment,due to their easily functionalizeable surfaces and tunable interlayer structures.However,the irregular structure of water channels within GO-based membrane has largely confined water permeance and prevented the simultaneously improvement of purification performance.Herein,we purposely construct the well-structured three-dimensional(3D)water channels featuring regular and negatively-charged properties in the GO/SiO_(2)composite membrane via in situ close-packing assembly of SiO_(2)nanoparticles onto GO nanosheets.Such regular 3D channels can improve the water permeance to a record-high value of 33,431.5±559.9 L·m^(−2)·h−1(LMH)bar−1,which is several-fold higher than those of current state-of-the-art GO-based membranes.We further demonstrate that benefiting from negative charges on both GO and SiO2,these negatively-charged 3D channels enable the charge selectivity well toward dye in wastewater where the rejection for positive-charged and negative-charged dye molecules is 99.6%vs.7.2%,respectively.The 3D channels can also accelerate oil/water(O/W)separation process,in which the O/W permeance and oil rejection can reach 19,589.2±1,189.7 LMH bar−1 and 98.2%,respectively.The present work unveils the positive role of well-structured 3D channels on synchronizing the remarkable improvement of both water permeance and purification performance for highly efficient wastewater treatment. | Huaqiang Fu Zhe Wang Peng Li Wei Qian Zixin Zhang Xin Zhao Hao Feng Zhugen Yang Zongkui Kou Daping He | 2023 | Nano Research2023，16，2： | 0 |
| 9 | Size effect enabling additive-free MXene ink with ultrahigh conductivity for screen printing of wireless electronics显示文摘Facile preparation of additive-free inks with both high viscosity and high conductivity is critical for scalable screen printing of wireless electronics,yet very challenging.MXene materials exhibit excellent conductivity and hydrophilicity,showing great potential in the field of additive-free inks for screen printing.Here,we demonstrate the synthesis of additive-free two-dimensional(2D)titanium carbide MXene inks,and realize screen-printed MXene wireless electronics for the first time.The viscosity of MXene ink is solely regulated by tuning the size of MXene nanosheet without any additives,hence rendering the printed MXene film extremely high conductivity of 1.67×10^(5) S/m and fine printing resolution down to 0.05 mm on various flexible substrates.Moreover,radio frequency identification(RFID)tags fabricated using the additive-free MXene ink via screen printing exhibit stable antenna reading performance and superb flexibility.This article,thus offers a new route for the efficient,low-cost and pollution-free manufacture of printable electronics based on additive-free MXene inks. | Shuaishuai Chen Huaqiang Fu Yunfa Si Xueyu Liu Zhe Wang Yixue Duan Zixin Zhang Hao Feng Xin Zhao Daping He | 2023 | Nano Research2023，16，8： | 0 |
| 10 | The concordance between the evolutionary trend and the clinical manifestation of the two SARS-CoV-2 variants显示文摘Coronavirus disease 2019(COVID-19),the disease caused by infection with severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),has developed into a global pandemic that continues to pose an enormous threat to public health and the global economy.Since the first SARS-CoV-2 genome was released[1],thousands of genetic variants have been identified in SARS-CoV-2 strains isolated from worldwide patients. | Ben Hu Ran Liu Xiaolu Tang Yuchen Pan Ming Wang Yongqing Tong Guangming Ye Gaigai Shen Ruochen Ying Aisi Fu Di Li Wanxu Zhao Jing Peng Jie Guo Dong Men Xinmin Yao Yirong Wang Hong Zhang Zhihui Feng Junping Yu Liangjun Chen Zixin Deng Xuemei Lu Ya-Ping Zhang Yirong Li Bende Liu Lilei Yu Yan Li Jian Lu Tiangang Liu | 2021 | National Science Review2021，8，8： | 0 |
| 11 | Contamination Identification of Lentinula Edodes Logs Based on Improved YOLOv5s显示文摘In order to improve the accuracy and efficiency of Lentinula edodes logs contamination identification,an improved YOLOv5s contamination identification model for Lentinula edodes logs(YOLOv5s-CGGS)is proposed in this paper.Firstly,a CA(coordinate attention)mechanism is introduced in the feature extraction network of YOLOv5s to improve the identifiability of Lentinula edodes logs contamination and the accuracy of target localiza-tion.Then,the CIoU(Complete-IOU)loss function is replaced by an SIoU(SCYLLA-IoU)loss function to improve the model’s convergence speed and inference accuracy.Finally,the GSConv and GhostConv modules are used to improve and optimize the feature fusion network to improve identification efficiency.The method in this paper achieves values of 97.83%,97.20%,and 98.20%in precision,recall,and mAP@0.5,which are 2.33%,3.0%,and 1.5%better than YOLOv5s,respectively.mAP@0.5 is better than YOLOv4,Ghost-YOLOv4,and Mobilenetv3-YOLOv4(improved by 4.61%,5.16%,and 6.04%,respectively),and the FPS increased by two to three times. | Xuefei Chen Wenhui Tan Qiulan Wu Feng Zhang Xiumei Guo Zixin Zhu | 2023 | Intelligent Automation & Soft Computing2023，37，9： | 0 |
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