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| 1 | Orbit determination and time synchronization for a GEO/IGSO satellite navigation constellation with regional tracking network显示文摘Aiming at regional services,the space segment of COMPASS (Phase I) satellite navigation system is a constellation of Geostationary Earth Orbit (GEO),Inclined Geostationary Earth Orbit (IGSO) and Medium Earth Orbit (MEO) satellites.Precise orbit determination (POD) for the satellites is limited by the geographic distribution of regional tracking stations.Independent time synchronization (TS) system is developed to supplement the regional tracking network,and satellite clock errors and orbit data may be obtained by simultaneously processing both tracking data and TS data.Consequently,inconsistency between tracking system and TS system caused by remaining instrumental errors not calibrated may decrease navigation accuracy.On the other hand,POD for the mixed constellation of GEO/IGSO/MEO with the regional tracking network leads to parameter estimations that are highly correlated.Notorious example of correlation is found between GEO's orbital elements and its clock errors.We estimate orbital elements and clock errors for a 3GEO+2IGSO constellation in this study using a multi-satellite precise orbit determination (MPOD) strategy,with which clock error elimination algorithm is applied to separate orbital and clock estimates to improve numerical efficiency.Satellite Laser Ranging (SLR) data are used to evaluate User Ranging Error (URE),which is the orbital error projected on a receiver's line-of-sight direction.Two-way radio-wave time transfer measurements are used to evaluate clock errors.Experimenting with data from the regional tracking network,we conclude that the fitting of code data is better than 1 m in terms of Root-Mean-Square (RMS),and fitting of carrier phase is better than 1 cm.For orbital evaluation,difference between computed receiver-satellite ranging based on estimated orbits and SLR measurements is better than 1 m (RMS).For clock estimates evaluation,2-hour linear-fitting shows that the satellite clock rates are about 1.E-10 s/s,while receiver clock rates are about 1×10 13-1×10 12 s/s.For the 72-hour POD experiment,the average differences between POD satellite clock rates estimates and clock measurements based on TS system are about 1×10 13 s/s,and for receiver clock rates,the differences are about 1×10 15 s/s. | ZHOU ShanShi HU XiaoGong WU Bin LIU Li QU WeiJing GUO Rui HE Feng CAO YueLing Wu XiaoLi ZHU LingFeng SHI Xin TAN HongLi | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，6： | 44 |
| 2 | Multipath error detection and correction for GEO/IGSO satellites显示文摘Constellations of regional satellite navigation systems are usually constituted of geostationary satellites (GEO) and inclined geostationary satellites (IGSO) for better service availability. Analysis of real data shows that the pseudorange measurements of these two types of satellites contain significant multipath errors and code noise, and the multipath for GEO is extremely serious, which is harmful to system services. In contrast, multipath error of carrier phase measurements is less than 3 cm, which is smaller than the multipath of pseudorange measurements by two orders of magnitude. Using a particular combination of pseudorange and dual-frequency carrier phase measurements, the pseudorange multipath errors are detected, and their time varying features are analyzed. A real-time multipath correction algorithm is proposed in this paper, which is called CNMC (Code Noise and Multipath Correction). The algorithm decreases the influence of the multipath error and therefore ensures the performance of the system. Data processing experiments show that the multipath error level may be reduced from 0.5 m to 0.15 m by using this algorithm, and 60% of GEO multipath errors and 42% of IGSO multipath errors are successfully corrected with CNMC. Positioning experiments are performed with a constellation of 3 GEO plus 3 IGSO satellites. For dual-frequency users the East-West position accuracy is improved from 1.31 m to 0.94 m by using the CNMC algorithm, the South-North position accuracy is improved from 2.62 m to 2.29 m, and the vertical position accuracy is improved from 4.25 m to 3.05 m. After correcting multipath errors, the three-dimensional position accuracy is improved from 5.16 m to 3.94 m. | WU XiaoLi ZHOU JianHua WANG Gang HU XiaoGong CAO YueLing | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，7： | 31 |
| 3 | Positioning accuracy assessment for the 4GEO/5IGSO/2MEO constellation of COMPASS显示文摘Determined to become a new member of the well-established GNSS family,COMPASS(or BeiDou-2) is developing its capabilities to provide high accuracy positioning services.Two positioning modes are investigated in this study to assess the positioning accuracy of COMPASS' 4GEO/5IGSO/2MEO constellation.Precise Point Positioning(PPP) for geodetic users and real-time positioning for common navigation users are utilized.To evaluate PPP accuracy,coordinate time series repeatability and discrepancies with GPS' precise positioning are computed.Experiments show that COMPASS PPP repeatability for the east,north and up components of a receiver within China's Mainland is better than 2 cm,2 cm and 5 cm,respectively.Apparent systematic offsets of several centimeters exist between COMPASS precise positioning and GPS precise positioning,indicating errors remaining in the treatments of COMPASS measurement and dynamic models and reference frame differences existing between two systems.For common positioning users,COMPASS provides both open and authorized services with rapid differential corrections and integrity information available to authorized users.Our assessment shows that in open service positioning accuracy of dual-frequency and single-frequency users is about 5 m and 6 m(RMS),respectively,which may be improved to about 3 m and 4 m(RMS) with the addition of differential corrections.Less accurate Signal In Space User Ranging Error(SIS URE) and Geometric Dilution of Precision(GDOP) contribute to the relatively inferior accuracy of COMPASS as compared to GPS.Since the deployment of the remaining 1 GEO and 2 MEO is not able to significantly improve GDOP,the performance gap could only be overcome either by the use of differential corrections or improvement of the SIS URE,or both. | ZHOU ShanShi CAO YueLing ZHOU JianHua HU XiaoGong TANG ChengPan LIU Li GUO Rui HE Feng CHEN JunPing WU Bin | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，12： | 31 |
| 4 | The wide-area difference system for the regional satellite navigation system of COMPASS显示文摘The regional satellite navigation system of COMPASS (Phase I) provides both open services and authorized services. Authorized services offer differential corrections and integrity information to users to support higher positioning, navigation and timing precision. Experimenting with real data, positioning accuracy is estimated with a 3GEO/4IGSO COMPASS constellation. The results show that with dual-frequency and single-frequency pseudo-range measurements, the positioning errors are respectively 8 and 10 m (RMS) for open service users, while for authorized users, the errors are 4 and 5 m (RMS), respectively. The COMPASS constellation geometry may cause large error to occur in the height component by 7-9 m for dualor single-frequency users, which can be effectively reduced with the differential corrections supplied by the authorized services. Multipath errors are identified and corrected for COMPASS, resulting in 25% positioning accuracy improvement for dual-frequency users and 10% improvement for single-frequency users. | CAO YueLing HU XiaoGong WU Bin ZHOU ShanShi LIU Li SU RanRan CHANG ZhiQiao HE Feng ZHOU JianHua | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，7： | 21 |
| 5 | Species-dependent neuropathology in transgenic SOD' aigs显示文摘 | Huaqiang Yang Guohao Wang Haitao Sun Runzhe Shu Tao Liu Chuan-En Wang Zhaoming Liu Yu Zhao Bentian Zhao Zhen Ouyang Dongshan Yang Jiao Huang Yueling Zhou Shihua Li Xiaodan Jiang Zhicheng Xiao Xiao-Jiang Li Liangxue Lai | 2014 | Cell Research2014，24，4： | 13 |
| 6 | Isolation of marine benzo[a]pyrene-degrading Ochrobactrum sp. BAP5 and proteins characterization显示文摘A bacterial strain BAP5 with a relatively high degradation ability of benzo[a]pyrene (BaP) was isolated from marine sediments of Xiamen Western Sea, China and identified as Ochrobactrum sp. according to 16S rRNA gene sequence as well as Biolog microbial identification system. Strain BAP5 could grow in mineral salt medium with 50 mg/L of BaP and degrade about 20% BaP after 30 d of incubation. Ochrobactrum sp. BAP5 was able to utilize other polycyclic aromatic hydrocarbons (PAHs) (such as phenanthrene, pyrene and fluoranthene) as the sole carbon source and energy source, suggesting its potential application in PAHs bioremediation. The profile of total soluble protein from Ochrobactrum sp. BAP5 was also investigated. Some over- and special-expressed proteins of strain BAP5 when incubated with the presence of BaP were detected by two-dimensional polyacrylamide gel electrophoresis, and found to be related with PAHs metabolism, DNA translation, and energy production based on peptide fingerprint analysis through matrix-assisted laser desorption/ionization-time of flight mass spectrometry. | WU Yirui HE Tengteng ZHONG Mingqi ZHANG Yueling LI Enmin HUANG Tongwang HU Zhong | 2009 | Journal of Environmental Sciences2009，21，10： | 10 |
| 7 | The WUSCHEL Related Homeobox Protein WOX7 Regulates the Sugar Response of Lateral Root Development in Arabidopsis thaliana显示文摘糖在底层支持侧面的根形成,但是在高 C/N 或 C/P 比率变得禁止。糖怎么压制侧面的根形成,然而是不清楚的。这里,我们报导那 WOX7, WUSCHEL 的一个成员联系了 homeobox (WOX ) 家庭抄写因素,以一种糖依赖者方式禁止侧面的根开发。侧面的根 primordia 的数字在 wox7 异种增加了,但是在植物减少了过去表示的 WOX7。表示 WOX7-VP16 熔化蛋白质的植物比 wox7 生产了甚至更侧面的根,建议 WOX7 充当在侧面的根开发的一个 transcriptional 抑压者。WOX7 根本被表示侧面的根的阶段开发,而是它首先涉及侧面的根开始。与这一致, wox7 异种仅仅在侧面的根开发的早阶段举办了一项更高有丝分裂的活动。进一步的研究建议 WOX7 通过房间周期基因的直接压抑调整侧面的根开发,特别地 CYCD6; 1。WOX7 表示被糖提高,由植物生长素减少了,但是没对盐和甘露糖醇作出回应。在 wox7 异种, lateralroot 形成上的糖的效果被减轻。这些结果一起建议 WOX7 在在植物联合侧面的根发展节目和糖地位起一个重要作用。 | Danyu Kong Yueling Hao Hongchang Cui | 2016 | Molecular Plant2016，9，2： | 10 |
| 8 | Impact of environmental factors on water quality at multiple spatial scales and its spatial variation in Huai River Basin, China显示文摘Quantitative assessment of water quality and its spatial variation identification, as well as the discernment of primary factors affecting water quality are in its urgent in water environment management. In this study, four key water quality indicators,namely, ammonia nitrogen(NH_4^+-N), permanganate index(COD_(Mn)), total phosphorus(TP) and total nitrogen(TN) at 71 sampling sites were selected to evaluate water quality and its spatial variation identification. More concerns were emphasized on the anthropogenic factors(land use pattern) and natural factors(river density, elevation and precipitation) to quantify the overall water quality variations at different spatial scales. Results showed that the Yi-Shu-Si River sub-basin had a better water quality status than the Huai River sub-basin. The moderate polluted area nearly distributed in the upper and middle reaches of the Shaying River and Guo River. The high cluster centers which were surrounded with COD_(Mn), NH_4^+-N, TN and TP mainly also distributed in the upper and middle reaches of the Shaying River and Guo River. Redundancy analysis showed that the 200 m buffer area acted as the most sensitive area, which was easily subjected to pollution. The precipitation was identified as the most important variables among all the studied hydrological units, followed by farmland, urban land or elevation. The point source pollution was still existed although the non-point source pollution was also identified. The urban surface runoff pollution was severer than farmland fertilizer loss at the sub-basin scale in flood season, while the farmland showed 'small-scale' effects for explaining overall water quality variations. This research is helpful for identifying the overall water quality variations from the scale-process interactions and providing a scientific basis for pollution control and decision making for the Huai River Basin. | XIA Jun WANG LongFeng YU JingJie ZHAN CheSheng ZHANG YongYong QIAO YunFeng WANG YueLing | 2018 | Science China Earth Sciences2018，61，1： | 8 |
| 9 | Effects of Forging and Heat Treatments on the Microstructure and Oxidation Behavior of 316LN Stainless Steel in High Temperature Water显示文摘Microstructure of 316 LN stainless steel(ss),including the as-received material and samples processed by solution anneal treatment and stress relief treatment after forging,was characterized by Vickers hardness(HV) testing and electron back scattering diffraction(EBSD).The oxide film formed on samples after immersion in borated and lithiated water at 583.15 K was investigated by scanning electron microscopy(SEM) and X-ray photoelectron spectroscopy(XPS).Results showed that the grain size of samples was largely reduced after forging.Higher fraction of coincidence site lattice(CSL) boundaries and lower residual strain were observed in samples with either solution anneal treatment or stress relief treatment.The proportion of CSL boundaries was largely enhanced by solution anneal treatment after forging,due to the recrystallization occurring during solution anneal treatment.The oxide film grown on 316 LNss with solution anneal treatment after forging exhibited more strong protectiveness,as compared to the oxide film grown on samples with stress relief treatment after forging and the oxide film grown on asreceived samples without forging.The mechanisms of oxidation were then discussed. | Yueling Guo En-Hou Han Jianqiu Wang | 2015 | Journal of Materials Science & Technology2015，31，4： | 8 |
| 10 | Single track and single layer formation in selective laser melting of niobium solid solution alloy显示文摘Selective laser melting(SLM) was employed to fabricate Nb-37 Ti-13 Cr-2 Al-1 Si(at%)alloy, using pre-alloyed powders prepared by plasma rotating electrode processing(PREP). A series of single tracks and single layers under different processing parameters was manufactured to evaluate the processing feasibility by SLM, including laser power, scanning speed, and hatch distance.Results showed that continuous single tracks could be fabricated using proper laser powers and scanning velocities. Both the width of a single track and its penetration depth into a substrate increased with an increase of the linear laser beam energy density(LED), i.e., an increase of the laser power and a decrease of the scanning speed. Nb, Ti, Si, Cr, and Al elements distributed heterogeneously over the melt pool in the form of swirl-like patterns. An excess of the hatch distance was not able to interconnect neighboring tracks. Under improper processing parameters, a balling phenomenon occurred, but could be eliminated with an increased LED. This work testified the SLMprocessing feasibility of Nb-based alloy and promoted the application of SLM to the manufacture of niobium-based alloys. | Yueling GUO Lina JIA Bin KONG Na WANG Hu ZHANG | 2018 | Chinese Journal of Aeronautics2018，31，4： | 6 |
| 11 | Secondary pollution from sediment and red tide occurrence显示文摘The laboratory simulation study on the micro-bio element(MBE)released from polluted taliment in municipal sewage disposal area in Xiamen Harbor during to the changes of environmental parameters are presented in this paper. The red tide organisms was incu | Chen Cimei Li Yueling Wu Yuduan Department of Ocaeanography,Xiamen University, xiamen 361005,China | 1995 | Journal of Environmental Sciences1995，7，1： | 4 |
| 12 | Dynamics Modeling and Robust Trajectory Tracking Control for a Class of Hybrid Humanoid Arm Based on Neural Network显示文摘In order to solve the problem of trajectory tracking for a class of novel serial-parallel hybrid humanoid arm(HHA), which has parameters uncertainty, frictions, disturbance, abrasion and pulse forces derived from motors, a multistep dynamics modeling strategy is proposed and a robust controller based on neural network(NN)-adaptive algorithm is designed. At the first step of dynamics modeling, the dynamics model of the reduced HHA is established by Lagrange method. At the second step of dynamics modeling, the parameter uncertain part resulting mainly from the idealization of the HHA is learned by adaptive algorithm. In the trajectory tracking controller, the radial basis function(RBF) NN, whose optimal weights are learned online by adaptive algorithm, is used to learn the upper limit function of the total uncertainties including frictions, disturbances, abrasion and pulse forces. To a great extent, the conservatism of this robust trajectory tracking controller is reduced, and by this controller the HHA can impersonate mostly human actions. The proof and simulation results testify the validity of the adaptive strategy for parameter learning and the neural network-adaptive strategy for the trajectory tracking control. | WANG Yueling JIN Zhenlin | 2009 | Chinese Journal of Mechanical Engineering2009，22，3： | 4 |
| 13 | Damming effects on dissolved inorganic carbon in different kinds of reservoirs in Jialing River,Southwest China显示文摘To assess the effects of river damming on dissolved inorganic carbon in the Jialing River, a total of 40 water samples, including inflow, outflow, and stratified water in four cascade reservoirs(Tingzikou, Xinzheng,Dongxiguan, Caojie) were collected in January and July,2016. The major cations, anions, and δ^(13)C_(DIC) values were analyzed. It was found that the dissolved compositions are dominated by carbonate weathering, while sulfuric acids may play a relatively important role during carbonate weathering and increasing DIC concentration. Different reservoirs had variable characteristics of water physiochemical stratification. The DIC concentrations of reservoir water were lower in summer than those in winter due to the dilute effects and intensive aquatic photosynthesis, as well as imported tributaries. The δ^(13)C_(DIC) values in Tingzikou Reservoir were higher during summer than those in winter,which indicated that intensive photosynthesis increased the δ^(13)C_(DIC) values in residual water, but a similar trend was not obvious in other reservoirs. Except for in Xinzheng Reservoir, the δ^(13)C_(DIC) values in inflow and outflow reservoir water were lower than those in the surface water of stratified sampling in summer. For stratified sampling, it could be found that, in summer, the Tingzikou Reservoir δ^(13)C_(DIC) values significantly decreased with water depthdue to the anaerobic breakdown of organic matter. The significant correlation(p<0.01 or 0.05) between the DIC concentrations, the δ^(13)C_(DIC) values and anthropogenic species(Na^++K^+, Cl~–, SO_4^(2-) and NO_3^-) showed that the isotope composition of DIC can be a useful tracer of contaminants. In total, Tingzikou Reservoir showed lacustrine features, Xinzheng Reservoir and Dongxiguan Reservoir had 'transitional'' features, and Caojie Reservoir had a total of 'fluvial'' features. Generally, cascade reservoirs in the Jialing River exhibited natural river features rather than typical lake features due to characteristics of reservoir water in physiochemical stratification, spatiotemporal variations of DIC concentrations and isotopic compositions. It is evident that the dissolved inorganic carbon dynamics of natural rivers had been partly remolded by dam building. | Gaoyang Cui Xiaodong Li Qinkai Li Jun Huang Yuele Tao Siqi Li Jun Zhang | 2017 | Acta Geochimica2017，36，4： | 4 |
| 14 | Land use/cover change effects on floods with different return periods: a case study of Beijing, China显示文摘 | Yueling WANG Xiaoliu YANG | 2013 | Frontiers of Environmental Science & Engineering2013，7，5： | 3 |
| 15 | Lithium chloride ameliorates learning and memory ability and inhibits glycogen synthase kinase-3 beta activity in a mouse model of fragile X syndrome显示文摘In the present study,Fmr1 knockout mice (KO mice) were used as the model for fragile X syndrome.The results of step-through and step-down tests demonstrated that Fmr1 KO mice had shorter latencies and more error counts,indicating a learning and memory disorder.After treatment with 30,60,90,120,or 200 mg/kg lithium chloride,the learning and memory abilities of the Fmr1 KO mice were significantly ameliorated,in particular,the 200 mg/kg lithium chloride treatment had the most significant effect.Western blot analysis showed that lithium chloride significantly enhanced the expression of phosphorylated glycogen synthase kinase 3 beta,an inactive form of glycogen synthase kinase 3 beta,in the cerebral cortex and hippocampus of the Fmr1 KO mice.These results indicated that lithium chloride improved learning and memory in the Fmr1 KO mice,possibly by inhibiting glycogen synthase kinase 3 beta activity. | Shengqiang Chen Xuegang Luo Quan Yang Weiwen Sun Kaiyi Cao Xi Chen Yueling Huang Lijun Dai Yonghong Yi | 2011 | Neural Regeneration Research2011，6，31： | 3 |
| 16 | Cholecystokinin octapeptide antagonizes apoptosis in human retinal pigment epithelial cells显示文摘Although cholecystokinin octapeptide-8 is important for neurological function, its neuroprotective properties remain unclear. We speculated that cholecystokinin octapeptide-8 can protect human retinal pigment epithelial cells against oxidative injury. In this study, retinal pigment epithelial cells were treated with peroxynitrite to induce oxidative stress. Peroxynitrite triggered apoptosis in these cells, and increased the expression of Fas-associated death domain, Bax, caspase-8 and Bcl-2. These changes were suppressed by treatment with cholecystokinin octapeptide-8. These results suggest that cholecystokinin octapeptide-8 can protect human retinal pigment epithelial cells against apoptosis induced by peroxynitrite. | Yuan Liu Yueling Zhang Zhaohui Gu Lina Hao Juan Du Qian Yang Suping Li Liying Wang Shilei Gong | 2014 | Neural Regeneration Research2014，9，14： | 2 |
| 17 | Synthesis of Monodisperse CdS Nanorods Catalyzed by Au Nanoparticles显示文摘Semiconductor nanocrystals(dots,rods,wires,etc.)exhibit a wide range of electrical and optical properties that differ from those of the corresponding bulk materials.These properties depend on both nanocrystal size and shape.Compared with nanodots,nanorods have an additional degree of freedom,the length or aspect ratio,and reduced symmetry,which leads to anisotropic properties.In this paper,we report the Au nanoparticle-catalyzed colloidal synthesis of monodisperse CdS nanorods.Based on systematic high resolution transmission electron microscopy studies,we propose a growth mechanism for these nanorods. | Hongwang Zhang Savas Delikanli Yueling Qin Shuli He Mark Swihart Hao Zeng | 2008 | Nano Research2008，1，4： | 2 |
| 18 | SPINDLY, ERECTA, and Its Ligand STOMAGEN Have a Role in Redox-Mediated Cortex Proliferation in the Arabidopsis Root显示文摘反应的氧种类(ROS ) 对所有生活有机体有害,因此,他们必须被移开保证正常生长和开发。ROS 也正在表明分子,但是到目前为止,很少在植物对 ROS 感觉和发展反应的机制被知道。我们这里报导那氢过氧化物在 Arabidopsis 根和那导致外皮增长细长纤弱(间谍) ,连接 O 的 glucosamine acetyltransferase,由维持细胞的氧化还原作用动态平衡调整外皮增长。我们也发现在充满白氨酸的受体 kinase ERECTA 和它的通常认为的肽 ligand STOMAGEN 的变化在根外皮增长上堵住氢过氧化物的效果。然而,而额外的外皮房间从内皮被生产, ERECTA 和 STOMAGEN 在脉管的织物被表示,建议细胞间的发信号的参与。间谍 ERECTA 显得行动下游,因为间谍变化仍然在 erecta 异种背景引起了外皮增长。我们因此有不仅获得了卓见进由哪个间谍调整根开发的机制而且揭开为在植物发信号的 ROS 的一条新奇小径。对氧化应力的保护的机制也被讨论的调停氧化还原作用的外皮增长的重要性。 | Hongchang Cui Danyu Konga Pengcheng Wei Yueling Hao Keiko U. Torii Jin Suk Lee Jie Li | 2014 | Molecular Plant2014，7，12： | 2 |
| 19 | The Impact of Environment Uncertainty and Effectual Flexibility on Entrepreneurial Resource Combination: The Moderating Effect of Entrepreneurial Self-efficacy显示文摘企业的资源联合广泛地作为一个关键启用因素被认出到新冒险幸存和生长,但是资源怎么并且为什么是综合的遗体逃犯。从资源联合的理论借由 Sirmon, Hitt 和爱尔兰(2007 ) 求婚了,这研究以经验为主地检验环境无常怎么影响企业的资源联合。我们也在在环境无常和企业的资源联合之间的关系上检验有效灵活性的调停的效果看新冒险怎么利用灵活性抵销环境无常的威胁。企业的自我功效的节制的效果也被检验看企业家自我认知怎么影响这些关系。从 287 新冒险检验数据,我们发现环境精力和环境敌视在企业的资源联合(联合的包括的企业的资源结合和企业的资源) 上有显著地积极的影响。我们也发现灵活性调停在环境无常(包括的环境精力和环境敌视) 和企业的资源联合之间的关系。实验研究也证明企业的自我功效断然节制在环境精力和灵活性之间的关系,但是否定地节制在环境敌视和灵活性之间的关系。理论、实际的含意被讨论。 | Xuebing Peng Yueling Liu Yi Lin | 2015 | Frontiers of Business Research in China2015，9，4： | 2 |
| 20 | Reliability of weak signals detection in neurons with noise显示文摘Previous experimental and theoretical studies have demonstrated that a weak signal can be amplified and optimized by the assistance of noise. The response of the system undergoes stochastic resonance(SR) like behavior. The underlying mechanisms are fairly simple and robust. This phenomenon has been observed in a large variety of systems, including physical and biological systems. In the nervous system, the majority of synaptic input is too weak to make neurons fire a spike. This weak(or subthreshold) signals detection is very important for animal survival, and pulse detection is a simple but basic task of neuronal information transmission and processing. Some studies have found that subthreshold signals can be transmitted by the application of external noise. However, neurons are subjected to various kinds of inherent noise. Recently, theoretical work has revealed that this inherent noise improves signals detection ability. The detection ability of a single neuron is limited, and the neuronal circuit can perform this task very well by detecting the synchronization of presynaptic potentials. Here, we review recent studies of subthreshold detection by both single neurons and neuronal circuits. | SHEN YueLing YU LianChun CHEN Yong | 2016 | Science China(Technological Sciences)2016，59，3： | 2 |
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