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| 1 | Curve fitting and optimal interpolation on CNC machines based on quadratic B-splines显示文摘In this paper,curve fitting of 3-D points generated by G01 codes and interpolation based on quadratic B-splines are studied.Feature points of G01 codes are selected using an adaptive method.Next,quadratic B-splines are obtained as the fitting curve by interpolating these feature points.Computations required in implementing the velocity planning algorithm mentioned by Timer et al.are very complicated because of the appearance of high-order curves.An improved time-optimal method for the quadratic B-spline curves is presented to circumvent this issue.The algorithms are verified with simulations as well as on real CNC machines. | ZHANG Mei YANWei YUAN ChunMing WANG DingKang GAO XiaoShan | 2011 | Science China(Information Sciences)2011，54，7： | 21 |
| 2 | A CHARACTERISTIC SET METHOD FOR SOLVING BOOLEAN EQUATIONS AND APPLICATIONS IN CRYPTANALYSIS OF STREAM CIPHERS显示文摘这篇论文为解决布尔方程论述一个典型集合方法,它是更有效的并且比一般典型集合方法有更好的性质。特别地,作者给一 disjoint 和 monic 为为一个布尔方程系统的解决方案的数字的一个布尔方程系统和一个明确的公式的零个集合的零个分解算法。作者也证明一个典型集合能以变量的数字与布尔多项式的增加的一个多项式数字被计算。作为实验,建议方法被用来基于非线性的过滤器生成器从流零的一个类的密码翻译法解决方程。广泛的实验证明方法是相当有效的。 | Fengjuan CHAI Xiao-Shan GAO Chunming YUAN | 2008 | Journal of Systems Science & Complexity2008，21，2： | 17 |
| 3 | Drag models for simulating gas–solid flow in the turbulent fluidization of FCC particles显示文摘This paper examines the suitability of various drag models for predicting the hydrodynamics of the turbulent fluidization of FCC particles on the Fluent V6.2 platform.The drag models included those of Syamlal–O’Brien,Gidaspow,modified Syamlal–O’Brien,and McKeen.Comparison between experimental data and simulated results showed that the Syamlal–O’Brien,Gidaspow,and modified Syamlal–O’Brien drag models highly overestimated gas–solid momentum exchange and could not predict the formation of dense phase in the fluidized bed,while the McKeen drag model could not capture the dilute charac- teristics due to underestimation of drag force.The standard Gidaspow drag model was then modified by adopting the effective particle cluster diameter to account for particle clusters,which was,however, proved inapplicable for FCC particle turbulent fluidization.A four-zone drag model(dense phase,subdense phase,sub-dilute phase and dilute phase)was finally proposed to calculate the gas–solid exchange coefficient in the turbulent fluidization of FCC particles,and was validated by satisfactory agreement between prediction and experiment. | Peng Li Xingying Lan Chunming Xu Gang Wang Chunxi Lu Jinsen Gao | 2009 | Particuology2009，7，4： | 13 |
| 4 | Microphysical Characteristics of Precipitation during Pre-monsoon,Monsoon, and Post-monsoon Periods over the South China Sea显示文摘Raindrop size distribution (RSD) characteristics over the South China Sea (SCS) are examined with onboard Parsivel disdrometer measurements collected during marine surveys from 2012 to 2016. The observed rainfall is divided into premonsoon, monsoon, and post-monsoon periods based on the different large-scale circumstances. In addition to disdrometer data, sounding observation, FY-2E satellite, SPRINTARS (Spectral Radiation-Transport Model for Aerosol Species), and NCEP reanalysis datasets are used to illustrate the dynamical and microphysical characteristics associated with the rainfall in different periods. Significant variations have been observed in respect of raindrops among the three periods. Intercomparison reveals that small drops (D < 1 mm) are prevalent during pre-monsoon precipitation, whereas medium drops (1?3 mm) are predominant in monsoon precipitation. Overall, the post-monsoon precipitation is characterized by the least concentration of raindrops among the three periods. But, several large raindrops could also occur due to severe convective precipitation events in this period. Classification of the precipitation into stratiform and convective regimes shows that the lg(Nw) value of convective rainfall is the largest (smallest) in the pre-monsoon (post-monsoon) period, whereas the Dm value is the smallest (largest) in the pre-monsoon (post-monsoon) period. An inversion relationship between the coefficient A and the exponential b of the Z?R relationships for precipitation during the three periods is found. Empirical relations between Dm and the radar reflectivity factors at Ku and Ka bands are also derived to improve the rainfall retrieval algorithms over the SCS. Furthermore, the possible causative mechanisms for the significant RSD variability in different periods are also discussed with respect to warm and cold rain processes, raindrop evaporation, convective activities, and other meteorological factors. | Qingwei ZENG Yun ZHANG Hengchi LEI Yanqiong XIE Taichang GAO Lifeng ZHANG Chunming WANG Yanbin HUANG | 2019 | Advances in Atmospheric Sciences2019，36，10： | 7 |
| 5 | Experimental and computational studies on flow behavior of gas-solid fluidized bed with disparately sized binary particles显示文摘This paper presents experimental and computational studies on the flow behavior of a gas-solid fluidized bed with disparately sized binary particle mixtures.The mixing/segregation behavior and segregation efficiency of the small and large particles are investigated experimentally.Particle composition and operating conditions that influence the fluidization behavior of mixing/segregation are examined.Based on the granular kinetics theory,a multi-fluid CFD model has been developed and verified against the experimental results.The simulation results are in reasonable agreement with experimental data.The results showed that the smaller particles are found near the bed surface while the larger particles tend to settle down to the bed bottom in turbulent fluidized bed.However,complete segregation of the binary particles does not occur in the gas velocity range of 0.695-0.904 m/s.Segregation efficiency increases with increasing gas velocity and mean residence time of the binary particles,but decreases with increasing the small particle concentration.The calculated results also show that the small particles move downward in the wall region and upward in the core.Due to the effect of large particles on the movement of small particles,the small particles present a more turbulent velocity profile in the dense phase than that in the dilute phase. | Jinsen Gao Jian Chang Chunxi Lu Chunming Xu | 2008 | Particuology2008，6，2： | 7 |
| 6 | Effect of wall boundary condition on CFD simulation of CFB risers显示文摘The effect of solid-phase wall boundary condition on the numerical simulation of gas-solid flow in CFB risers containing FCC particles was investigated using the two-fluid model incorporating the kinetic theory of granular flow.Both the Gidaspow drag model and the EMMS-based drag model were used.The Johnson and Jackson(1987) wall boundary condition was applied to describe the interaction between particles and wall.Based on the experimental system of Li and Kwauk(1994),parametric studies of specularity coefficient(φ=1.0,0.6,0.0005,0.00005,0) and particle-wall restitution coefficient(e_w=0.6,0.9,0.95,0.99,0.999) were performed to evaluate their effects on axial voidage profile,solids flux,meso-scale and heterogeneous structures.Simulation results showed that solid-phase wall boundary condition had little effect on axial voidage profile when the Gidaspow drag model was used.However,the specularity coefficient φ had a pronounced influence on flow behavior when the EMMS-based drag model was used,and a small specularity coefficient(φ=0.00005,0) could result in better agreement with experimental data.The particle-wall restitution coefficient e_w plays but a minor role in the holistic flow characteristics. | Xinyu Zhou Jinsen Gao Chunming Xu Xingying Lan | 2013 | Particuology2013，11，5： | 6 |
| 7 | Leakproof secret sharing protocols with applications to group identification scheme显示文摘In a traditional (t,n)-threshold secret sharing scheme,t or more honest participants can reconstruct the secret K.In the reconstruction process,the individual shares and the secret key K are revealed,hence K is shared once only.In this paper,we firstly give the definition of leakproof secret sharing scheme which is composed of a distribution protocol and a proof protocol,then propose two leakproof secret sharing protocols,a computationally secure protocol and an information-theoretically secure protocol.In our protocols,t or more participants can jointly prove that they hold the secret K by using a multi-prover zero-knowledge argument of knowledge.As a result,the secret K will be shared for as many times as desired.Furthermore,each participant can detect the dealer in the distribution protocol from cheating,and any verifier can prevent non-qualified set of participants in proof protocol from cheating.As an example of the practical impact of our work we use our techniques to construct group identification schemes with zero-knowledge. | TANG ChunMing GAO ShuHong | 2012 | Science China(Information Sciences)2012，55，5： | 6 |
| 8 | Bioaugmentation of DDT-contaminated soil by dissemination of the catabolic plasmid pDOD显示文摘A plasmid transfer-mediated bioaugmentation method for the enhancement of dichlorodiphenyltrichloroethane(DDT) degradation in soil was developed using the catabolic plasmid p DOD from Sphingobacterium sp. D-6. The p DOD plasmid could be transferred to soil bacteria, such as members of Cellulomonas, to form DDT degraders and thus accelerate DDT degradation. The transfer efficiency of p DOD was affected by the donor, temperature,moisture, and soil type. Approximately 50.7% of the DDT in the contaminated field was removed 210 days after the application of Escherichia coli TG I(p DOD-gfp). The results suggested that seeding p DOD into soil is an effective bioaugmentation method for enhancing the degradation of DDT. | Chunming Gao Xiangxiang Jin Jingbei Ren Hua Fang Yunlong Yu | 2015 | Journal of Environmental Sciences2015，27，1： | 6 |
| 9 | Climatic Aftermath of the 1815 Tambora Eruption in China显示文摘The 1815 eruption of the Tambora volcano led to the 'Year without a Summer' and caused serious crop failure and famines in 1816 across Europe and North America. However, few reports are available on Tambora's influence in China despite the region's susceptibility to monsoonal volcanic perturbation. This study presents a systemic analysis of the climatic and related social responses to the Tambora perturbation in China, by using two independent lines of proxy records and projecting the responses on top of the impacts averaged over all tropical eruptions of the past millennium. Both the tree ring and Chinese documentary proxies show that Tambora induced a cold excursion, which caused severe frost damage, snow and ice accumulations that are uncommonly seen in southern China. Cold temperature tends to cause drought by suppressing evaporation and monsoonal circulation—a hydroclimate response that is evident in the tree-ring-based Monsoon Asia Drought Atlas but largely missing in a multiproxy precipitation reconstruction. Historical records of drought, flood, frost, and famine also show fairly mild responses outside southern China, which may be partially due to the insensitivity of documentary records to the Tambora-induced perturbation,or the cold background climate set up by the low solar insolation of the coincident Dalton Minimum and a preceding unknown eruption in 1809. The results presented here provide new insights into the spatial extent and characteristics of the Tambora perturbation, by providing a systematic evaluation of the climatic aftermath in China in parallel to that in Europe and North America. They also argue for the integral use of multiple proxies from different regions of the world to gain a better understanding of the climatic impacts for individual volcanic eruptions. | Chaochao GAO Yujuan GAO Qian ZHANG Chunming SHI | 2017 | Journal of Meteorological Research2017，31，1： | 5 |
| 10 | Dual-turbo receiver architecture for turbo coded MIMO-OFDM systems显示文摘This paper presents a novel architecture of iterative receivers with two layers of iterations for turbo coded multiple-input and multiple-output orthogonal frequency-division multiplexing(MIMO-OFDM)systems,where soft messages are passed not only between the MIMO detector and the turbo decoder,but also between the two component decoders within the turbo decoder.We first derive the factor graph representation of a turbo coded system as a basic building block for developing the iterative receivers.Then,a new soft message passing schedule over the factor graph is proposed,resulting in the proposed dual-turbo receiver architecture(DTRA).In DTRA,the MIMO detector and the turbo decoder work concurrently,and the soft messages for both layers of iterations are updated instantaneously,instead of the block-based exchange of soft messages in the conventional iterative receivers.In so doing,the processing latency can be greatly reduced while low computational complexity can be achieved. | WANG WenJin GAO XiQi WU XiaoFu YOU XiaoHu ZHAO ChunMing WONG Kai-Kit | 2012 | Science China(Information Sciences)2012，55，2： | 5 |
| 11 | Deployment of Sensors in WSN: An Efficient Approach Based on Dynamic Programming显示文摘Efficient sensor node deployment is extremely important in wireless sensor networks. It earns great practical meanings through using fewer sensor nodes as far as possible to satisfy different requirements such as the requirement on coverage and overcoming the potential sensor node failures and the adverse influence from the environment. We propose an efficient approach for the deployment of sensor nodes in wireless networks, termed as EDSNDA, which is excellent in taking both the requirements of sensor coverage and network connectivity into consideration when minimizing the number of necessary sensor nodes to the best of its ability. We proposed a new coverage model of sensor node. Based on the sensor coverage model, we establish four dynamic programming models in four different practical situations, respectively. The algorithms are then proposed which are used for solving the corresponding dynamic programming models. The validity of the method is justified by simulation studies in which the method is compared with the current representative methods. The simulation results show that our method performs better than the other ones with fewer sensor nodes, better coverage and network connectivity result in the same circumstance. | LI Yongyan GAO Wen WU Chunming WANG Yansong | 2015 | Chinese Journal of Electronics2015，24，1： | 4 |
| 12 | Carbendazim induces a temporary change in soil bacterial community structure显示文摘The effect of carbendazim applications on the diversity and structure of a soil bacterial community was studied under field conditions using temperature gradient gel electrophoresis (TGGE) and partial sequence analysis of PCR-amplified 16S rRNA gene. After four successive introductions of carbendazim at a level of 0.94 kg active ingredient (a.i.)/ha, the genetic diversity (expressed as Shannon index, H ) decreased from 1.43 in the control to 1.29 in treated soil. This harmful effect seems to increase with the concentration of carbendazim. The value of H in the soil treated with carbendazim at 4.70 kg a.i./ha was reduced to 1.05 (P 0.05). The structure of soil bacterial community was also affected after four repeated applications of carbendazim at levels of 0.94, 1.88 and 4.70 kg a.i./ha, as seen in the relative intensities of the individual band. However, the bacterial community in carbendazim-treated soil recovered to that in the control 360 d after the first treatment. The results indicated that repeated applications of carbendazim could reduce soil microbial diversity and alter the bacterial community structure temporarily. | WANG Xiuguo, SONG Min, GAO Chunming, DONG Bin, ZHANG Qun, FANG Hua, YU Yunlong Department of Plant Protection, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China. | 2009 | Journal of Environmental Sciences2009，21，12： | 3 |
| 13 | Wuacanthus(Acanthaceae),a new Chinese endemic genus segregated from Justicia(Acanthaceae)显示文摘A new genus,Wuacanthus Y.F.Deng,N.H.Xia&H.Peng(Acanthaceae),is described from the Hengduan Mountains,China.Wuacanthus is based on Wuacanthus microdontus(W.W.Sm.)Y.F.Deng,N.H.Xia&H.Peng,originally published in Justicia and then moved to Mananthes.The new genus is characterized by its shrub habit,strongly 2-lipped corolla,the 2-lobed upper lip,3-lobed lower lip,2 stamens,bithecous anthers,parallel thecae with two spurs at the base,2 ovules in each locule,and the 4-seeded capsule.Phylogenetic analyses show that the new genus belongs to the Pseuderanthemum lineage in tribe Justicieae.Wuacanthus is closely related to Pseuderanthemum but differs from the latter by its shorter corolla tube and two minute spurs at the base of each anther-theca.W.microdontus is assessed with the status EN B2ab(iii)based on the IUCN Red List Categories and Criteria. | Yunfei Deng Chunming Gao Nianhe Xia Hua Peng | 2016 | Plant Diversity2016，38，6： | 3 |
| 14 | FEEDBACK LINEARIZATION CONTROL FOR ELECTRONICALLY CONTROLLABLE CLUTCH OF VEHICLE显示文摘An investigation is made to the friction chutch engagement control of automotive AMT systems based on a nonlinear dynamic model with double inputs. According to friction torque transmission characteristics during clutch engagement, an equivalent, fully controllable and linearized model and the feedback linearization control are derived from the original system with nonlinearities via homomorphic transforms. By the resulting mathematical modeling, computer simulations are made both for the original nonlinear and feedback linearized systems with incorporation of ordinary PID controllers to follow ideal vehicle dynamic responses. It has been shown by comparison between the two sets of numerical results that the feedback linearization control designed for the nonlinear system is of fine accuracy and robustness in model tracking behaviors of clutch engagements. | Chen Li Zhang Jianwu Huang Weigang Shanghai Jiaotong University Gao Chunming Shanghai Clutch Factory | 1999 | Chinese Journal of Mechanical Engineering1999，12，4： | 3 |
| 15 | Reaction behavior of oil sand in fluidized-bed pyrolysis显示文摘The reaction behavior of oil sand from Inner Mongolia(China) were studied in a fluidizedbed pyrolysis process,and a comparative study was conducted on the properties of the liquid products obtained through fluidized-bed pyrolysis of oil sand and the native bitumen obtained by solvent extraction.The results indicated that the fluidized-bed pyrolysis,a feasible carbon rejection process,can be used to upgrade oil sand.The reaction temperature and time were found to be the key operating parameters affecting the product distribution and yields in fluidized-bed pyrolysis of oil sand.The optimal temperature was 490℃ and the most suitable reaction time was 5 min.Under these operation conditions,the maximum yield of liquid product was 80wt%.In addition,the pyrolysis kinetics of oil sand at different heating rates of 5,10,20 and 30℃/min was investigated using a thermogravimetric analyzer(TGA). | Gao Jinsen Xu Tao Wang Gang Zhang Angui Xu Chunming | 2013 | Petroleum Science2013，10，4： | 2 |
| 16 | Boosting of reversible capacity delivered at a low voltage below 0.5 V in mildly expanded graphitized needle coke anode for a high-energy lithium ion battery显示文摘The rate performance and cycle stability of graphitized needle coke(GNC)as anode are still limited by the sluggish kinetics and volume expansion during the Li ions intercalation and de-intercalation process.Especially,the output of energy density for lithium ion batteries(LIBs)is directly affected by the delithiation capacity below 0.5 V.Here,the mildly expanded graphitized needle coke(MEGNC)with the enlarged interlayer spacing from 0.346 to 0.352 nm is obtained by the two-step mild oxidation intercalation modification.The voltage plateau of MEGNC anode below 0.5 V is obviously broadened as compared to the initial GNC anode,contributing to the enhancement of Li storage below the low voltage plateau.Moreover,the coin full cell and pouch full cell configured with MEGNC anode exhibit much enhanced Li storage ability,energy density and better cycling stability than those full cells configured with GNC and commercial graphite anodes,demonstrating the practical application value of MEGNC.The superior anode behaviors of MEGNC including the increased effective capacity at low voltage and superior cyclic stability are mainly benefited from the enlarged interlayer spacing,which not only accelerates the Li ions diffusion rate,but also effectively alleviates the volume expansion and fragmentation during the Li ions intercalation process.In addition,the above result is further confirmed by the density functional theory simulation.This work provides an effective modification strategy for the NC-based graphite to enhance the delithiation capacity at a low voltage plateau,dedicated to improving the energy density and durability of LIBs. | Dong Sun Lu Zhao Zhihua Xiao Kai Zhao Rundan Lin Hongmei Song Xilu Zhang Xinlong Ma Chong Peng Xiaoqiao Huang Xingxun Li Jinsen Gao Chunming Xu | 2022 | Journal of Energy Chemistry2022，31，11： | 2 |
| 17 | Achieving Consistence for Cross-Domain WAN Control in Software-Defined Networks显示文摘When applying Software-Defined Networks(SDN) to WANs,the SDN flexibility enables the cross-domain control to achieve a better control scalability.However,the control consistence is required by all the cross-domain services,to ensure the data plane configured in consensus for different domains.Such consistence process is complicated by potential failure and errors of WANs.In this paper,we propose a consistence layer to actively and passively snapshot the cross-domain control states,to reduce the complexities of service realizations.We implement the layer and evaluate performance in the PlanetLab testbed for the WAN emulation.The testbed conditions are extremely enlarged comparing to the real network.The results show its scalability,reliability and responsiveness in dealing with the control dynamics.In the normalized results,the active and passive snapshots are executed with the mean times of 1.873 s and 105 ms in135 controllers,indicating its readiness to be used in the real network. | ZHOU Boyang WU Chunming GAO Wen HONG Xiaoyan JIANG Ming CHEN Shuangxi | 2015 | China Communications2015，12，10： | 2 |
| 18 | CFD simulation of gas solid flowing FCC strippers显示文摘 | Gao Jinsen Chang Jian Xu Chunming | 2008 | Chemical EngineeringScience2008，63，7： | 1 |
| 19 | Coking Mechanisms Within RFCC Disengagers 显示文摘 | Gao Jinsen Xu Chunming Gao Daiwei | 2004 | Petroleum Science and Technology2004，22，56： | 1 |
| 20 | Reaction Behaviors and Mechanisms of Catalytic Pyrolysis of C4 Hydrocarbons显示文摘 | Li Li Gao Jinsen Xu Chunming | 2006 | Chem Eng J2006，116，3： | 1 |
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