|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Multi-block SSD based on small object detection for UAV railway scene surveillance显示文摘A method of multi-block Single Shot Multi Box Detector(SSD)based on small object detection is proposed to the railway scene of unmanned aerial vehicle surveillance.To address the limitation of small object detection,a multi-block SSD mechanism,which consists of three steps,is designed.First,the original input images are segmented into several overlapped patches.Second,each patch is separately fed into an SSD to detect the objects.Third,the patches are merged together through two stages.In the first stage,the truncated object of the sub-layer detection result is spliced.In the second stage,a sub-layer suppression and filtering algorithm applying the concept of non-maximum suppression is utilized to remove the overlapped boxes of sub-layers.The boxes that are not detected in the main-layer are retained.In addition,no sufficient labeled training samples of railway circumstance are available,thereby hindering the deployment of SSD.A two-stage training strategy leveraging to transfer learning is adopted to solve this issue.The deep learning model is preliminarily trained using labeled data of numerous auxiliaries,and then it is refined using only a few samples of railway scene.A railway spot in China,which is easily damaged by landslides,is investigated as a case study.Experimental results show that the proposed multi-block SSD method produces an overall accuracy of 96.6%and obtains an improvement of up to 9.2%compared with the traditional SSD. | Yundong LI Han DONG Hongguang LI Xueyan ZHANG Baochang ZHANG Zhifeng XIAO | 2020 | Chinese Journal of Aeronautics2020，33，6： | 19 |
| 2 | OsBRXL4 Regulates Shoot Gravitropism and Rice Tiller Angle through Affecting LAZY1 Nuclear Localization显示文摘Rice tiller angle is a key agronomic trait that contributes to ideal plant architecture and grain production.LAZY1 (LA1) was previously shown to control tiller angle via affecting shoot gravitropism,but the underlying molecular mechanism remains largely unknown.In this study,we identified an LA1-interacting protein named Brevis Radix Like 4 (OsBRXL4).We showed that the interaction between OsBRXL4 and LA1 occurs at the plasma membrane and that their interaction determines nuclear localization of LA1.We found that nuclear localization of LA1 is essential for its function,which is different from AtLA1,its Arabidopsis ortho.log.Overexpression of OsBRXL4 leads to a prostrate growth phenotype,whereas OsBRXLs RNAi plants,in which the expression levels of OsBRXLI,OsBRXL4,and OsBRXL5 were decreased,display a compact phenotype.Further genetic analysis also supported that OsBRXL4 controls rice tiller angle by affecting nuclear localization of LA1.Consistently,we demonstrated that OsBRXL4 regulates the shoot gravitropism through affecting polar auxin transport as did LA1.Taken together,our study not only identifies OsBRXL4 as a regulatory component of rice tiller angle but also provides new insights into genetic regulation of rice plant architecture. | Zhen Li Yan Liang Yundong Yuan Lei Wang Xiangbing Meng Guosheng Xiong Jie Zhou Yueyue Cai Ningpei Han Lekai Hua Guifu Liu Jiayang Li Yonghong Wang | 2019 | Molecular Plant2019，12，8： | 12 |
| 3 | Enhancing rice grain production by manipulating the naturally evolved cis-regulatory element-containing inverted repeat sequence of OsREM20显示文摘Grain number per panicle(GNP)is an important agronomic trait that contributes to rice grain yield.Despite its importance in rice breeding,the molecular mechanism underlying GNP regulation remains largely unknown.In this study,we identified a previously unrecognized regulatory gene that controls GNP in rice,Oryza sativa REPRODUCTIVE MERISTEM 20(OsREM20),which encodes a B3 domain transcription factor.Through genetic analysis and transgenic validation we found that genetic variation in the CArG box-containing inverted repeat(IR)sequence of the OsREM20 promoter alters its expression level and contributes to GNP variation among rice varieties.Furthermore,we revealed that the IR sequence regulates OsREM20 expression by affecting the direct binding of OsMADS34 to the CArG box within the IR sequence.Interestingly,the divergent pOsREM20IR and pOsREM20ΔIR alleles were found to originate from different Oryza rufipogon accessions,and were independently inherited into the japonica and indica subspecies,respectively,during domestication.Importantly,we demonstrated that IR sequence variations in the OsREM20 promoter can be utilized for germplasm improvement through either genome editing or traditional breeding.Taken together,our study characterizes novel genetic variations responsible for GNP diversity in rice,reveals the underlying molecular mechanism in the regulation of agronomically important gene expression,and provides a promising strategy for improving rice production by manipulating the cis-regulatory element-containing IR sequence. | Xiaowei Wu Yan Liang Hengbin Gao Jiyao Wang Yan Zhao Lekai Hua Yundong Yuan Ahong Wang Xiaohui Zhang Jiafan Liu Jie Zhou Xiangbing Meng Dahan Zhang Shaoyang Lin Xuehui Huang Bin Han Jiayang Li Yonghong Wang | 2021 | Molecular Plant2021，14，6： | 3 |
| 4 | Restoring After Central Nervous System Injuries:Neural Mechanisms and Translational Applications of Motor Recovery显示文摘Central nervous system(CNS)injuries,including stroke,traumatic brain injury,and spinal cord injury,are leading causes of long-term disability.It is estimated that more than half of the survivors of severe unilateral injury are unable to use the denervated limb.Previous studies have focused on neuroprotective interventions in the affected hemisphere to limit brain lesions and neurorepair measures to promote recovery.However,the ability to increase plasticity in the injured brain is restricted and difficult to improve.Therefore,over several decades,researchers have been prompted to enhance the compensation by the unaffected hemisphere.Animal experiments have revealed that regrowth of ipsilateral descending fibers from the unaffected hemisphere to denervated motor neurons plays a significant role in the restoration of motor function.In addition,several clinical treatments have been designed to restore ipsilateral motor control,including brain stimulation,nerve transfer surgery,and brain–computer interface systems.Here,we comprehensively review the neural mechanisms as well as translational applications of ipsilateral motor control upon rehabilitation after CNS injuries. | Zhengrun Gao Zhen Pang Yiming Chen Gaowei Lei Shuai Zhu Guotao Li Yundong Shen Wendong Xu | 2022 | Neuroscience Bulletin2022，38，12： | 3 |
| 5 | Numerical failure analysis of a continuous reinforced concrete bridge under strong earthquakes using multi-scale models显示文摘Previous failure analyses of bridges typically focus on substructure failure or superstructure failure separately. However, in an actual bridge, the seismic induced substructure failure and superstructure failure may influence each other. Moreover, previous studies typically use simplified models to analyze the bridge failure; however, there are inherent defects in the calculation accuracy compared with using a detailed three-dimensional(3D) finite element(FE) model. Conversely, a detailed 3D FE model requires more computational costs, and a proper erosion criterion of the 3D elements is necessary. In this paper, a multi-scale FE model, including a corresponding erosion criterion, is proposed and validated that can significantly reduce computational costs with high precision by modelling a pseudo-dynamic test of an reinforced concrete(RC) pier. Numerical simulations of the seismic failures of a continuous RC bridge based on the multi-scale FE modeling method using LS-DYNA are performed. The nonlinear properties of the bridge, various connection strengths and bidirectional excitations are considered. The numerical results demonstrate that the failure of the connections will induce large pounding responses of the girders. The nonlinear deformation of the piers will aggravate the pounding damages. Furthermore, bidirectional earthquakes will induce eccentric poundings to the girders and different failure modes to the adjacent piers. | Li Zhongxian Chen Yu Shi Yundong | 2017 | Earthquake Engineering and Engineering Vibration2017，16，2： | 2 |
| 6 | TAGLN suppresses proliferation and invasion, and induces apoptosis of colorectal carcinoma cells显示文摘 | Qinmin Li Ruihua Shi Yundong Wang Xiaoping Niu | 2013 | Tumor Biology2013，，1： | 2 |
| 7 | Screening melamine adulterant in milk powder with laser Raman spectrometry显示文摘 | Yan Cheng Yiyang Dong Jinghang Wu Xiaoran Yang Hua Bai Hongyan Zheng Dongmei Ren Yundong Zou Ming Li | 2009 | Journal of Food Composition and Analysis2009，，2： | 2 |
| 8 | Study on cavern evolution and performance of three mixers in agitation of yield-pseudoplastic fluids显示文摘The hydrodynamic performance of three mixers single shaft central mixer(SSC), single shaft off-centred mixer(SSO), dual shaft off-centred mixer(DSO), was investigated in the mixing of yield-pseudoplastic fluids(xanthan gum solutions) in the laminar regime. To explore and determine the efficiency of three mixers, both numerical and experimental approaches were adopted. The fluid rheology was described by the Herschel–Bulkley rheological model. Computational fluid dynamics was employed to simulate the apparent viscosity distribution, mixing time, and the flow pattern inside the stirred tank. The developed model was validated through experimentally measured torque. The influence mechanism of the rotational speed and fluid rheology on the cavern evolution was explored deeply. The performances of three mixers in this work were compared at the constant power input and fluid rheology with respect to the flow pattern, mixing time, and mixing efficiency. The results verify that the faster the rotating speed, the greater influence of the fluid rheology on the cavern evolution, and the more uniform apparent viscosity distribution. Moreover, the mixing time decreases continuously as the increasing power consumption per unit volume, and the dimensionless mixing time of DSO mixer was nearly 42.8% and 6.1% shorter than that of SSC and SCO mixer at the same Reynolds number, respectively. According to the mixing efficiency criteria, these data also revealed that DSO was more efficient than SSC and SSO. | Songsong Wang Hong Li Changyuan Tao Renlong Liu Yundong Wang Zuohua Liu | 2023 | Chinese Journal of Chemical Engineering2023，55，3： | 2 |
| 9 | Bias correction of sea surface temperature retrospective forecasts in the South China Sea显示文摘Offline bias correction of numerical marine forecast products is an effective post-processing means to improve forecast accuracy. Two offline bias correction methods for sea surface temperature(SST) forecasts have been developed in this study: a backpropagation neural network(BPNN) algorithm, and a hybrid algorithm of empirical orthogonal function(EOF) analysis and BPNN(named EOF-BPNN). The performances of these two methods are validated using bias correction experiments implemented in the South China Sea(SCS), in which the target dataset is a six-year(2003–2008) daily mean time series of SST retrospective forecasts for one-day in advance, obtained from a regional ocean forecast and analysis system called the China Ocean Reanalysis(CORA),and the reference time series is the gridded satellite-based SST. The bias-correction results show that the two methods have similar good skills;however, the EOF-BPNN method is more than five times faster than the BPNN method. Before applying the bias correction, the basin-wide climatological error of the daily mean CORA SST retrospective forecasts in the SCS is up to-3°C;now, it is minimized substantially, falling within the error range(±0.5°C) of the satellite SST data. | Guijun Han Jianfeng Zhou Qi Shao Wei Li Chaoliang Li Xiaobo Wu Lige Cao Haowen Wu Yundong Li Gongfu Zhou | 2022 | Acta Oceanologica Sinica2022，41，2： | 2 |
| 10 | FoxM1 is Overexpressed in Helicobacter pylori–Induced Gastric Carcinogenesis and Is Negatively Regulated by miR-370显示文摘 | Yimin Feng Lixiang Wang Jiping Zeng Li Shen Xiuming Liang Han Yu Shili Liu Zhifang Liu Yundong Sun Wenjuan Li Chunyan Chen Jihui Jia | 2013 | Molecular Cancer Research2013，，8： | 2 |
| 11 | High‑Performance Flexible Microneedle Array as a Low‑Impedance Surface Biopotential Dry Electrode for Wearable Electrophysiological Recording and Polysomnography显示文摘Microneedle array(MNA)electrodes are an effective solution to achieve high-quality surface biopotential recording without the coordination of conductive gel and are thus very suitable for long-term wearable applications.Existing schemes are limited by flexibility,biosafety,and manufacturing costs,which create large barriers for wider applications.Here,we present a novel flexible MNA electrode that can simultaneously achieve flexibility of the substrate to fit a curved body surface,robustness of microneedles to penetrate the skin without fracture,and a simplified process to allow mass production.The compatibility with wearable wireless systems and the short preparation time of the electrodes significantly improves the comfort and convenience of electrophysiological recording.The normalized electrode–skin contact impedance reaches 0.98 kΩcm^(2)at 1 kHz and 1.50 kΩcm^(2)at 10 Hz,a record low value compared to previous reports and approximately 1/250 of the standard electrodes.The morphology,biosafety,and electrical/mechanical properties are fully characterized,and wearable recordings with a high signal-to-noise ratio and low motion artifacts are realized.The first reported clinical study of microneedle electrodes for surface electrophysiological monitoring was conducted in tens of healthy and sleep-disordered subjects with 44 nights of recording(over 8 h per night),providing substantial evidence that the electrodes can be leveraged to substitute for clinical standard electrodes. | Junshi Li Yundong Ma Dong Huang Zhongyan Wang Zhitong Zhang Yingjie Ren Mengyue Hong Yufeng Chen Tingyu Li Xiaoyi Shi Lu Cao Jiayan Zhang Bingli Jiao Junhua Liu Hongqiang Sun Zhihong Li | 2022 | Nano-Micro Letters2022，14，8： | 1 |
| 12 | Adaptive updating of kernel band- width for mean-shift tracking显示文摘 | Li Yundong Zhao Weigang | 2012 | Journal of Computational Information Systems2012，8，22： | 1 |
| 13 | The antibacterialmode ofaction of allitridi for its potential use as a therapeutic agent againstHelicobacter pylori infection显示文摘 | Shuang Liu Yundong Sun Wenjuan Li | | 0，，02： | 1 |
| 14 | Dynamic re- sponse of pre/post buckled thin - walled structure un- der thermo - acoustic loading显示文摘 | Yundong Sha Jiyong Li Zhijun Gao | 2011 | Applied Mechanics and Materials2011，80，2011： | 1 |
| 15 | Molecular simulation of MCM-41: Structural properties and adsorption of CO 2 , N 2 and flue gas显示文摘 | Yu Jing Li Wei Yundong Wang Yangxin Yu | 2013 | Chemical Engineering Journal2013，，： | 1 |
| 16 | Screening melamine adulterant in milk powder with laser Raman spectrometry显示文摘 | Yan Cheng Yiyang Dong Jinghang Wu Xiaoran Yang Hua Bai Hongyan Zheng Dongmei Ren Yundong Zou Ming Li | 2009 | Journal of Food Composition and Analysis2009，，2： | 1 |
| 17 | Matrix micrestructure deteriorations resulting from diamond incorporation in electroplated metal-diamond composites显示文摘 | Li Yundong Zhan Anqing Wang Baoan | 2008 | Surface & coatings technology2008，202，： | 1 |
| 18 | Effects of peak current density on the mechanical properties of nanocrystalline Ni-Co alloys produced by pulse electrodeposition显示文摘 | Yundong Li Hui Jiang Weihua Huang | 2008 | Applied Surface Science2008，254，： | 1 |
| 19 | 显示文摘 | Li Yundong Zhao Anqing Lu Huiyang | 2008 | Sur- face and Coatings Technolog2008，20，： | 1 |
| 20 | The remedial effect of soluble interleukin-1 receptor type Ⅱ on endometriosis in the nude mouse model显示文摘Objective:Recent studies have shown that the local expression of soluble interleukin(IL)-1 receptor typeⅡ (sIL-1 RⅡ)in endometrial tissue of women with endometriosis is decreased,and the depression of IL-1 RⅡwas more significant in infertile women than that in fertile women with endometriosis.In this research,we investigated the remedial effect of sIL-1-RⅡadministration on endometriosis in the nude mouse model.Methods: Nineteen nude model mice with endometriosis were randomly divided into three groups:group A was treated by intraperitoneal administration with only sIL-1 RⅡfor two weeks,group B was similarly treated with only IL- 1,and group C(control)was administered saline.After 2 weeks,the size of the ectopic endometrial lesions was calculated,and the expression of vascular endothelial growth factor(VEGF)and B-cell lymphoma leukemia-2(Bcl- 2)were detected by immunohistochemistry.The IL-8 and VEGF levels in the peritoneal fluid(PF)and serum were also measured by enzyme-linked immunosorbent assay(ELISA).Results:The mean size of ectopic endometrial lesion did not differ between the three groups(P>0.05).Compared with the control,the expression of VEGF and Bcl-2 was significantly lower in group A,and higher in group B.In the three groups,the levels of IL-8 in the PF and serum were highest in group A,and lowest in group B.Conclusion:sIL-1 RⅡmay suppresse hyperplasia of ectopic endometriosis,perhaps by reducing the expression of certain cytokines,such as VEGF,IL-8,and Bcl-2, which could provide a new clinical strategy for the treatment of endometriosis. | Liying Gao Liang Sun Yugui Cui Zhen Hou Li Gao Jing Zhou Yundong Mao Suping Han Jiayin Liu | 2010 | The Journal of Biomedical Research2010，24，1： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员