|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | High-sum-rate beamformers for multi-pair two-way relay networks with amplify-and-forward relaying strategy显示文摘In multi-pair two-way relay networks,the control over inter-pair-interference is a challenging problem.When mobile stations(MSs)cooperate fully,to achieve the sum capacity of networks and at the same time completely remove the inter-pair-interference,a singular value decomposition(SVD)based beamforming scheme at relay station(RS)is established where SVD beamformers are applied over both uplink and downlink channels,respectively.To avoid any cooperation among users,an efcient beamforming scheme is proposed.This scheme uses the Max-SINR based receive beamformer at RS in uplink channel and the Max-SLNR based transmit precoder at RS in downlink channel.It omits interference(uplink)and leakage(donwlink)inside each pair of users due to their abilities of self-interference cancellation.This beamforming scheme provides an analytical solution like some well-known linear beamformers such as zero-forcing,block diagonalization,etc.From simulation,we find:the proposed SVD shows an excellent sum-rate performance at the expense of a large cooperation overhead at MSs and can be used as a tighter upper bound of sum-rate;the proposed scheme of Max-SINR beamformer plus Max-SLNR precoder performs much better on sum-rate than the ZF-based and the BD-based schemes by using almost the same computational amount. | SHU Feng LU YaZhe CHEN Yu YOU XiaoHu WANG JianXin WANG Mao SHENG WeiXing CHEN Qian | 2014 | Science China(Information Sciences)2014，57，2： | 15 |
| 2 | Modeling the global ionospheric total electron content with empirical orthogonal function analysis显示文摘In the present work we model the global ionospheric total electron content (TEC) with the analysis of empirical orthogonal functions (EOF). The obtained statistical eigen modes, which makeup the modeled TEC, consist of two factors: the eigen vectors mapping TEC patterns at latitude and longitude (or local time LT), and the corresponding coefficients displaying the TEC variations in different time scales, i.e., the solar cycle, the yearly (annual and semiannual) and the diurnal universal time variations. It is found that the EOF analysis can separate the TEC variations into chief processes and the first two modes illustrate the most of the ionospheric climate properties. The first mode contains both the semiannual component which shows the semiannual ionospheric anomaly and the annual component which shows the annual or non-seasonal ionospheric anomaly. The second mode contains mainly the annual component and shows the normal seasonal ionospheric variation at most latitudes and local time sectors. The annual component in the second mode also manifests seasonal anomaly of the ionosphere at higher mid-latitudes around noontime. It is concluded that the EOF analysis, as a statistical eigen mode method, is resultful in analyzing the ionospheric climatology hence can be used to construct the empirical model for the ionospheric climatology. | WAN WeiXing DING Feng REN ZhiPeng ZHANG ManLian LIU LiBo NING BaiQi | 2012 | Science China(Technological Sciences)2012，55，5： | 15 |
| 3 | Hybrid interference alignment and power allocation for multi-user interference MIMO channels显示文摘This paper proposes a hybrid interference alignment scheme which combines maximizing signal-toleakage-noise ratio(Max-SLNR) at transmitter and maximizing signal-to-interference-noise ratio(Max-SINR) at receiver.The proposed scheme gives the same sum rate as the existing method using Max-SINR at both transmitter and receiver by avoiding the operation of reversing channel,thus it provides a simpler solution.Furthermore,two power allocation procedures are devised based on game theory and water filling.The gain of these schemes over equal power allocation increases to 2 bit/s/Hz in correlated fading channels as large-scale fading becomes significant.Additionally,user fairness is solved by introducing weighting factors. | SHU Feng YOU XiaoHu WANG Mao HAN YuBing LI Yang SHENG WeiXing | 2013 | Science China(Information Sciences)2013，56，4： | 5 |
| 4 | Ultra-stable super-resolution fluorescence cryo-microscopy for correlative light and electron cryo-microscopy显示文摘Remarkable progress in correlative light and electron cryo-microscopy(cryo-CLEM) has been made in the past decade. A crucial component for cryo-CLEM is a dedicated cryo-fluorescence microscope(cryo-FM). Here, we describe an ultra-stable superresolution cryo-FM that exhibits excellent thermal and mechanical stability. The temperature fluctuations in 10 h are less than0.06 K, and the mechanical drift over 5 h is less than 200 nm in three dimensions. We have demonstrated the super-resolution imaging capability of this system(average single molecule localization accuracy of ~13.0 nm). The results suggest that our system is particularly suitable for long-term observations, such as single molecule localization microscopy(SMLM) and cryogenic super-resolution correlative light and electron microscopy(csCLEM). | Xiaojun Xu Yanhong Xue Buyun Tian Fengping Feng Lusheng Gu Weixing Li Wei Ji Tao Xu | 2018 | Science China(Life Sciences)2018，61，11： | 3 |
| 5 | Occurrence of avian leukosis virus subgroup J in commercial layer flocks in China显示文摘 | Binrui Xu Weixing Dong Chunming Yu Zhaoqing He Yanli Lv Yanzheng Sun Xiaoyu Feng Ning Li L. F. Lee Maoxiang Li | 2004 | Avian Pathology2004，，1： | 3 |
| 6 | Preliminary experimental results by the prototype of Sanya Incoherent Scatter Radar显示文摘In the past decades,the Incoherent Scatter Radar(ISR)has been demonstrated to be one of the most powerful instruments for ionosphere monitoring.The Institute of Geology and Geophysics at the Chinese Academy of Sciences was founded to build a state-ofthe-art phased-array ISR at Sanya(18.3°N,109.6°E),a low-latitude station on Hainan Island,named the Sanya ISR(SYISR).As a first step,a prototype radar system consisting of eight subarrays(SYISR-8)was built to reduce the technical risk of producing the entire large array.In this work,we have summarized the preliminary experimental results based on the SYISR-8.The amplitude and phase among 256 channels were first calibrated through an embedded internal monitoring network.The mean oscillation of the amplitude and phase after calibration were about 1 dB and 5°,respectively,which met the basic requirements.The beam directivity was confirmed by crossing screen of the International Space Station.The SYISR-8 was further used to detect the tropospheric wind profile and meteors.The derived winds were evaluated by comparison with independent radiosonde and balloon-based GPS measurements.The SYISR-8 was able to observe several typical meteor echoes,such as the meteor head echo,range-spread trail echo,and specular trail echo.These results confirmed the validity and reliability of the SYISR-8 system,thereby reducing the technical risk of producing the entire large array of the SYISR to some extent. | XinAn Yue WeiXing Wan Han Xiao LingQi Zeng ChangHai Ke BaiQi Ning Feng Ding BiQiang Zhao Lin Jin Chen Li MingYuan Li JunYi Wang HongLian Hao Ning Zhang | 2020 | Earth and Planetary Physics2020，4，6： | 3 |
| 7 | Trifolirhizin induces autophagy-dependent apoptosis in colon cancer via AMPK/mTOR signaling显示文摘Dear Editor,Colorectal cancer(CRC)is one of the most frequent diseases with high mortality around the world.Conventional treatments of CRC remain unsatisfactory due to the increasing recurrence rate and adverse reactions including neutropenia,drug resistance,etc.Recently,autophagy has been shown to be involved in regulating cancer development and progression by regulating apoptosis through pro-apoptosis proteins including caspases,in addition to being a potential target for cancer therapeutic intervention.1 Trifolirhizin(Supplementary Fig.S1a)is a natural flavonoid glycosides isolated from Sophora flavescens as well as a bioactive constituent of Xian-Lian-Ke-Li,a commercial traditional Chinese medicine for the cancer prevention.Numerous evidence manifested that trifolirhizin inhibited proliferative activity in melanoma B16 cell,lung cancer H23 cell,human ovarian A2780 cell,and human gastric cancer cell MKN45.2 However,its pharmacological effect and mechanism on CRC remain elusive.Herein,we evaluated the effect of trifolirhizin on autophagy and apoptosis on CRC as well as its related mechanisms,in order to provide evidence to develop a potential agent with less adverse effect in treating CRC. | Dongdong Sun Weiwei Tao Feng Zhang Weixing Shen Jiani Tan Liu Li Qinghai Meng Yugen Chen Ye Yang Haibo Cheng | 2020 | Signal Transduction and Targeted Therapy2020，5，1： | 3 |
| 8 | Highly Efficient Surface-Search Algorithm for Adaptive FIR Filtering显示文摘 | ZHANG Bin ZHENG Weixing FENG Dazheng | 2007 | Chinese Journal of Electronics2007，16，2： | 2 |
| 9 | Monitoring traveling ionospheric disturbances using the GPS network around China during the geomagnetic storm on 28 May 2011显示文摘Larger-scale traveling ionospheric disturbances (LSTIDs) are studied using the total electron content (TEC) data observed from 246 GPS receivers in and around China during the medium storm on 28 May 2011. It is the first attempt to get the two-dimensional TEC perturbation maps in China. Two LSTID events are detected: one is in southwestern China before midnight propagating from low to middle latitude to the distance of about 1200 km with the phase front extending to about 500 km, and the other is in northeastern China after midnight propagating from middle to low latitudes to the distance of about 1200 km with the phase front extending to nearly 1400 km. By using the multichannel maximum-entropy method, we get the propagation parameters of these two LSTIDs. The LSTID that occurs before midnight has a higher horizontal phase velocity and a larger damping rate corresponding to the after midnight LSTID, and this may be caused by the relatively large vertical background TEC 0 and high atmospheric temperature in the southwest of China before midnight. According to the variations of magnetic H component observed in high latitudes, the source region for the after midnight LSTID is likely to be located 1400-2600 km east of 140°E and north of 42°N; the before midnight LSTID is propably excited by the atmospheric gravity waves (AGWs) generated by the Joule heating of the equatorial electrojet. | SONG Qian DING Feng WAN WeiXing NING BaiQi ZHAO BiQiang | 2013 | Science China Earth Sciences2013，56，5： | 2 |
| 10 | Clinical analysis of CHD2 gene mutations in pediatric patients with epilepsy显示文摘Importance:CHD2 is a member of the chromodomain helicase DNA-binding(CHD)family of proteins,which have important roles in the regulation of gene expression.Dysregulation of this protein may lead to various disorders.Objective:To delineate the genotypes and phenotypes of CHD2-related epilepsy.Methods:We analyzed the medical history,magnetic resonance imaging findings,and video-electroencephalogram recordings of 17 patients withCHD2 mutations in the Neurology Department of Beijing Children’s Hospital from June 2016 to June 2021.Results:Age at seizure onset ranged from 6 months to 10 years;the median age at onset was 4 years.Generalized tonic-clonic,myoclonic,eyelid myoclonic,atonic,atypical absence,myoclonic-atonic,and spasm seizures were observed.Ten of the 17 patients had multiple types of seizures.One patient exhibited photosensitivity epilepsy and one patient exhibited grid image-induced visual reflex epilepsy.Developmental disability was present in 14 patients,while autism features were present in five patients.Sixteen patients hadde novo mutations ofCHD2;one patient had an inherited variant.Eleven mutations were novel.One patient had two mutations;that patient exhibited development delay and refractory epilepsy.Seizures were controlled in eight patients,improved in seven patients,and resistant to treatment in two patients.Interpretation:Phenotype severity in patients withCHD2 variants ranged from drug-responsive seizures to severe epileptic encephalopathy.Most patients exhibited developmental disorders. | Weixing Feng Fang Fang Xiaohui Wang Chunhong Chen Junlan Lu Jie Deng | 2022 | Pediatric Investigation2022，6，2： | 2 |
| 11 | Power recovery method for testing the efficiency of the ECD of an integrated generation unit for offshore wind power and ocean wave energy显示文摘Offshore wind power and ocean wave energy are clean,renewable and rich resources.The integrated generation unit for the | CHEN WeiXing GAO Feng MENG XiangDun REN An Ye HU Yan | 2017 | Science China(Technological Sciences)2017，60，3： | 2 |
| 12 | GPS detection of the coseismic ionospheric disturbances following the 12 May 2008 M7.9 Wenchuan earthquake in China显示文摘Here we report two cases of coseismic ionospheric disturbances observed through a GPS network in China after the great Wenchuan earthquake at 06:28 UT on 12 May,2008.One is detected 7.9 min after the earthquake and had an intensive'N'shape oscillated waveform with a pronounced amplitude of about 1 TECU,which propagates approximately southward to the distance about 1000 km with the horizontal phase velocity of 600±84 m/s and the period of 9.5±1.3 min.The other is detected8.5 min after the earthquake and has an oscillated waveform more like a positive pulse with an amplitude of about 0.5 TECU,which propagates eastward to the distance about 800 km with the horizontal phase velocity of 720±59 m/s and the period of7.4±0.8 min.These two coseismic ionospheric disturbances are caused by the acoustic gravity waves excited by partial transformation of the acoustic waves originated from the energy release of the earthquake,somewhere near the epicenter.The directional preferences of these two coseismic ionospheric disturbances may be associated with the oblique geomagnetic field lines and the background winds filtering effect. | SONG Qian DING Feng YU Tao WAN WeiXing NING BaiQi LIU LiBo ZHAO BiQiang | 2015 | Science China Earth Sciences2015，58，1： | 2 |
| 13 | Automatic video mosaicking algorithm via dynamic key-frame显示文摘Automatic video mosaicking is a challenging task in computer vision. Current researches consider either panoramic or mapping tasks on short videos. In this paper, an automatic mosaicking algorithm is proposed for both mapping and panoramic tasks based on the adapted key-frame on videos of any length.The speeded up robust features(SURF) and the grid motion statistic(GMS) algorithm are used for feature extraction and matching between consecutive frames, which are used to compute the transformation. In order to reduce the influence of the accumulated error during image stitching, an evaluation metric is put forward for the transformation matrix. Besides, a self-growth method is employed to stitch the global image for long videos. The algorithm is evaluated by using aerial-view and panoramic videos respectively on the graphic processing unit(GPU) device, which can satisfy the real-time requirement. The experimental results demonstrate that the proposed algorithm is able to achieve a better performance than the state-of-art. | JI Yufeng LI Weixing FENG Kai XING Boyang PAN Feng | 2020 | Journal of Systems Engineering and Electronics2020，31，2： | 1 |
| 14 | Numerical simulation and experimental validation of mixing performance of kneading discs in a twin screw extruder 显示文摘 | Zhang Xianming Feng Lianfang Chen Weixing | 2009 | Polym Eng Sci2009，49，9： | 1 |
| 15 | Multi-Object Tracking with Micro Aerial Vehicle显示文摘A simple yet efficient tracking framework is proposed for real-time multi-object tracking with micro aerial vehicles(MAVs). It's basic missions for MAVs to detect specific targets and then track them automatically. In our method, candidate regions are generated using the salient detection in each frame and then classified by an eural network. A kernelized correlation filter(KCF) is employed to track each target until it disappears or the peak-sidelobe ratio is lower than a threshold. Besides, we define the birth and death of each tracker for the targets. The tracker is recycled if its target disappears and can be assigned to a new target. The algorithm is evaluated on the PAFISS and UAV123 datasets. The results show a good performance on both the tracking accuracy and speed. | Yufeng Ji Weixing Li Xiaolin Li Shikun Zhang Feng Pan | 2019 | Journal of Beijing Institute of Technology2019，28，3： | 1 |
| 16 | Relationships between net primary productivity and stand age for several forest types and their influence on China’s carbon balance显示文摘 | Shaoqiang Wang Lei Zhou Jingming Chen Weimin Ju Xianfeng Feng Weixing Wu | 2011 | Journal of Environmental Management2011，，6： | 1 |
| 17 | Chinese patients with p.Arg756 mutations of ATP1A3: Clinical manifestations, treatment, and follow-up显示文摘Importance:The phenotypes of ATP1A3 gene mutations are diverse.Relapsing encephalopathy with cerebellar ataxia and fever-induced paroxysmal weakness and encephalopathy(FIPWE)are considered non-classical phenotypes caused by p.Arg756 mutations of ATP1A3.Objective:To summarize the clinical manifestations,treatment,and followup of Chinese patients with p.Arg756 mutations of ATP1A3.Methods:We analyzed the clinical features,treatment,and genotypes of eight children with p.Arg756 mutations of ATP1A3 who were treated in Beijing Children’s Hospital from January 2014 to December 2019.Results:Eight patients(six boys and two girls)were included;seven had been misdiagnosed with encephalitis.The age of onset ranged from 0.8 to 4.5 years.All patients had encephalopathy and had at least one episode of FIPWE.Cerebellar ataxia was present in nine episodes.Reversible splenial lesions of the corpus callosum were found in two patients in the acute phase.Three types of heterozygous ATP1A3 mutations were found:c.2267G>T(p.R756L)(patient 3[P3]),c.2266C>T(p.R756C)(P2 and P4),and c.2267G>A(p.R756H)(P1,P5,P6,P7,and P8).Six mutations were de novo;two mutations were inherited.Both patients with p.R756C and one patient(P7)with p.R756H had four episodes of severe ataxia as the main manifestations.However,in the other three episodes,limb weakness was more prominent than ataxia.P5 with p.R756H exhibited overlap with FIPWE and rapid-onset dystonia-parkinsonism.Interpretation:Acute encephalopathy followed by febrile disease was characteristic of the disease in patients with p.Arg756 mutations of ATP1A3.However,the weakness and ataxia were variable.Phenotypic crossover and overlap were observed among these patients. | Weihua Zhang Jiuwei Li Xiuwei Zhuo Ji Zhou Weixing Feng Shuai Gong Xiaotun Ren Changhong Ding Tongli Han Fang Fang | 2022 | Pediatric Investigation2022，6，1： | 1 |
| 18 | Convolutive blind source separation based on joint block Toeplitzation and block-inner diagonalization 显示文摘 | XU Xianfeng FENG Dazheng ZHENG Weixing | 2010 | Signal Processing2010，90，： | 1 |
| 19 | A fast recursive total least squares algorithm for adaptive IIR filtering显示文摘 | CHANG Dongxia FENG Dazheng ZHENG Weixing | | 0，，03： | 1 |
| 20 | Estimation in Linear Regression with Laplace Measurement Error Using Tweedie-Type Formula显示文摘Based on a Tweedie-type formula developed under the Laplace distribution,this paper proposes a new bias-corrected estimator of the regression parameters in a simple linear model when the measurement error follows a Laplace distribution.Large sample properties,including the consistency and the asymptotic normality,are investigated.The finite sample performance of the proposed estimators are evaluated via simulation studies,as well as comparison studies with some existing estimation procedures. | SHI Jianhong FENG Jing SONG Weixing | 2019 | Journal of Systems Science & Complexity2019，32，4： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员