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| 1 | The Cretaceous tectonic event in the Qiangtang Basin and its implications for hydrocarbon accumulation显示文摘The tectonic event during Cretaceous and its relationship with hydrocarbon accumulation in the Qiangtang Basin is discussed based on zircon U-Pb dating and the study of deformation, thermochronology and hydrocarbon formation. LA-ICPMS zircon U-Pb dating indicates that the tectonic event took place during the Early-Late Cretaceous (125-75Ma). The event not only established the framework and the styles of structural traps in the basin, but also led to the cessation of the first hydrocarbon formation and the destruction of previous oil pools. The light crude oil in the basin was formed during the second hydrocarbon formation stage in the Cenozoic, and ancient structural traps formed during the Cretaceous event are promising targets for oil and gas exploration. | Li Yalin Wang Chengshan Li Yongtie Ma Chao Wang Licheng Peng Shaonan | 2010 | Petroleum Science2010，7，4： | 11 |
| 2 | Multiobjective optimization using an immunodominance and clonal selection inspired algorithm显示文摘Based on the mechanisms of immunodominance and clonal selection theory,we propose a new multiobjective optimization algorithm,immune dominance clonal multiobjective algorithm(IDCMA).IDCMA is unique in that its fitness values of current dominated individuals are assigned as the values of a custom distance measure,termed as Ab-Ab affinity,between the dominated individuals and one of the nondominated individuals found so far.According to the values of Ab-Ab affin-ity,all dominated individuals(antibodies) are divided into two kinds,subdominant antibodies and cryptic antibodies.Moreover,local search only applies to the sub-dominant antibodies,while the cryptic antibodies are redundant and have no func-tion during local search,but they can become subdominant(active) antibodies during the subsequent evolution.Furthermore,a new immune operation,clonal proliferation is provided to enhance local search.Using the clonal proliferation operation,IDCMA reproduces individuals and selects their improved maturated progenies after local search,so single individuals can exploit their surrounding space effectively and the newcomers yield a broader exploration of the search space.The performance comparison of IDCMA with MISA,NSGA-Ⅱ,SPEA,PAES,NSGA,VEGA,NPGA,and HLGA in solving six well-known multiobjective function optimization problems and nine multiobjective 0/1 knapsack problems shows that IDCMA has a good performance in converging to approximate Pareto-optimal fronts with a good distribution. | GONG MaoGuo JIAO LiCheng MA WenPing DU HaiFeng | 2008 | Science in China(Series F)2008，51，8： | 6 |
| 3 | The transient fracture behavior for a functionally graded layered structure subjected to an in-plane impact load显示文摘The transient fracture behavior of a functionally graded layered structure subjected to an in-plane impact load is investigated. The studied structure is composed of two homogeneous layers and a functionally graded interlayer with a crack perpendicular to the boundaries. The impact load is applied on the face of the crack. Fourier transform and Laplace transform methods are used to formulate the present problem in terms of a singular integral equation in Laplace transform domain. Considering variations of parameters such as the nonhomogeneity constant, the thickness ratio and the crack length, the dynamic stress intensity factors (DSIFs) in time domain are studied and some meaningful conclusions are obtained. | Licheng Guo Linzhi Wu Yuguo Sun Li Ma | 2005 | Acta Mechanica Sinica2005，21，3： | 5 |
| 4 | Intelligent multi-user detection using an artificial immune system显示文摘Artificial immune systems (AIS) are a kind of new computational intelligence methods which draw inspiration from the human immune system. In this study, we introduce an AIS-based optimization algorithm, called clonal selection algorithm, to solve the multi-user detection problem in code-division multipleaccess communications system based on the maximum-likelihood decision rule. Through proportional cloning, hypermutation, clonal selection and clonal death, the new method performs a greedy search which reproduces individuals and selects their improved maturated progenies after the affinity maturation process. Theoretical analysis indicates that the clonal selection algorithm is suitable for solving the multi-user detection problem. Computer simulations show that the proposed approach outperforms some other approaches including two genetic algorithm-based detectors and the matched filters detector, and has the ability to find the most likely combinations. | GONG MaoGuo, JIAO LiCheng, MA WenPing & MA JingJing Key Laboratory of Intelligent Perception and Image Understanding of Ministry of Education of China Institute of Intelligent Information Processing, Xidian University, Xi’an 710071, China | 2009 | Science in China(Series F)2009，52，12： | 5 |
| 5 | Multiuser detection and independent component analysis——Progress and perspective显示文摘The latest progress in the multiuser detection and independent component analysis (ICA) is reviewed systematically. Then two novel classes of multiuser detection methods based on ICA algorithms and feedforward neural networks are proposed. Theoretical analysis and computer simulation show that ICA algorithms are effective to detect multiuser signals in code-division multiple-access (CDMA) system. The performances of these methods are not identical entirely in various channels, but all of them are robust, efficient, fast and suitable for real-time implementations. | JIAO Licheng , MA Haibo and LIU Fang( State Key Laboratory for Radar Signal Processing, Xidian University, Xi’an 710071, China) | 2002 | Progress in Natural Science:Materials International2002，12，7： | 3 |
| 6 | Immunodominance and clonal selection inspired multiobjective clustering显示文摘The biological immune system is a highly parallel and distributed adaptive system. The information processing abilities of the immune system provide important insights into the field of computation. Based on immunodominance in the biological immune system and the clonal selection mechanism, a novel data mining method, Immune Dominance Clonal Multiobjective Clustering algorithm (IDCMC), is presented. The algorithm divides an individual population into three sub-populations according to three different measurements, and adopts different evolution and selection strategies for each sub-population. The update of each sub-population, however, is not carried out in isolation. The periodic combination operation of the analysis of the three sub-populations represents considerable advantages in its global search ability. The clustering task is a multiobjective optimization problem, which is more robust with respect to the variety of cluster structures of different datasets than a single-objective clustering algorithm. In addition, the new algorithm can determine the number of clusters automatically, which should identify the most promising clustering solutions in the candidate set. The experimental results, using artificial datasets with different manifold structure and handwritten digit datasets, show that the IDCMC outperforms the PESA-Ⅱ-based clustering method, the genetic algorithm-based clustering technique and the original K-Means algorithm in solving most of the problems tested. | Wenping Ma , Licheng Jiao, Maoguo Gong Key Laboratory of Intelligent Perception and Image Understanding of the Ministry of Education of China, Institute of Intelligent Information Processing, Xidian University, Xi’an 710071, China | 2009 | Progress in Natural Science:Materials International2009，19，6： | 3 |
| 7 | Application of Pore Evolution and Fracture Development Coupled Models in the Prediction of Reservoir 'Sweet Spots' in Tight Sandstones显示文摘<正>The Chang-6~3 reservoir in the Huaqing area has widely developed tight sandstone reservoirs characterized by'thick sand layers,but not rich in oil',and it is thus necessary to further study its oil and gas enrichment law.This study builds porosity and fracture development | ZHANG Linyan ZHUO Xizhun MA Licheng CHEN Xiaoshuai SONG Licai ZHOU Xingui | 2015 | Acta Geologica Sinica(English Edition)2015，89，3： | 3 |
| 8 | A methodology to achieve the basis function for the expansion of sound speed profile显示文摘In order to evaluate the reliability and applicability of the Empirical Orthogonal Functions(EOFs)in the acoustic inversion of sound speed profile(SSP)and reduce EOF's dependence on the sample data,a methodology is proposed for the achievement of the basis functions for SSP's expansion.By analyzing the oceanographic dynamics which is the main cause of the SSP's variation,the basis functions are obtained naming the Hydrodynamic Normal Modes(HNMs).The HNM basis functions are almost the same as those derived from the EOF method,while HNMs has less dependence on the amount of the sample data.HNMs method has a physically meaningful interpretation,and it could give out the physical parameters which determine the basis functions for the expansion of SSP,and this makes it possible to analyze and evaluate the trustiness and applicability of EOFs. | SONG Wenhua HU Tao GUO Shengming MA Li LU Licheng | 2014 | Chinese Journal of Acoustics2014，33，3： | 2 |
| 9 | Community detection in networks by using multiobjective evolutionary algorithm with decomposition显示文摘 | Maoguo Gong Lijia Ma Qingfu Zhang Licheng Jiao | 2012 | Physica A: Statistical Mechanics and its Applications2012，，15： | 2 |
| 10 | LA-ICP-MS U-Pb Geochronology of Detrital Zircon in the Guanzhong Basin, China and Its Tectonic Response显示文摘The Guanzhong Basin in the transitional zone of theQinling orogenic belt and the southern margin of theOrdos Basin has been extensively studied in recent years.Although some results have been obtained, some problemssuch as whether the materials from the North China cratonand the Qinling orogenic belt are detrital sedimentaryrocks of the Guanzhong Basin still remain unresolved.Detrital sedimentary rocks contain information about thesource area; therefore. | DONG Min WANG Zongxiu DONG Hui MA Licheng ZHANG Linyan | 2018 | Acta Geologica Sinica(English Edition)2018，92，3： | 1 |
| 11 | Performance analysis of source ranging by use of virtual receiver technique under different frequency bands显示文摘The traditional matched field processing localization need complicated computation to get the replica field and has high dependence on environment parameters and acoustic field model.To overcome the shortcoming,virtual receiver technique is used for source ranging.A virtual receiver is constructed by correlating the two signals of the guide source and the objective source received by a vertical line array.Then,the slope of the interference striation of the virtual field is estimated using relevant signal processing method.Combining with the waveguide invariant β,the range of the objective source is determined.Through the numerical simulations and data processing collected from the experiment carried out in the South China Sea in 2004,the virtual receiver technique for broadband source ranging under the slopebottom shallow water environment is discussed.As the frequency increases,the frequency bands should be broadened to obtain complete interference striation for good ranging results.In data processing,the receiving array spacing is too large to promise the orthogonality of the modes as the frequency increases and ranging results become worse. | YAO Meijuan MA Li LU Licheng GUO Shengming | 2015 | Chinese Journal of Acoustics2015，34，4： | 1 |
| 12 | Image change detection based on an improved rough fuzzy c-means clustering algorithm显示文摘 | Ma Wenping Jiao Licheng Gong Maoguo | 2014 | International Journal of MachineLearning and Cybernetics2014，5，3： | 1 |
| 13 | Reference direction based immune clone algorithm for many-objective optimization显示文摘 | Ruochen LIU Chenlin MA Fei HE Wenping MA Licheng JIAO | 2014 | Frontiers of Computer Science2014，8，4： | 1 |
| 14 | A mechanical model of 3D braided composites with transverse and longitudinal cracks显示文摘 | Zeng Tao Fang Daining Guo Licheng Li Ma | 2004 | Composite Structures2004，69，1： | 1 |
| 15 | Early Permian Strata Exist in the Olongbluk Block显示文摘Objective Whether the Early Permian successions are still preserved in the Olongbluk Block is controversial, which is resulted from the diverse understanding on the formation age of fossil assemblages from the lower Zhabusagaxiu Formation. | SUN Jiaopeng JIANG Wan MA Licheng XIAO Zhouxuan | 2019 | Acta Geologica Sinica(English Edition)2019，93，2： | 1 |
| 16 | Experimental Study of Hygrothermal and Ultraviolet Aging on the Flexural Performance of Epoxy Polymer Mortar显示文摘This paper studies the effects of hygrothermal environment at different temperatures and ultraviolet(UV)radiation on the bending properties of epoxy polymer mortar(EPM).The microstructure changes of EPM during aging were studied by scanning electron microscopy,and the bending properties of EPM were predicted by the Arrhenius law.The results showed that the bending properties of EPM were greatly affected by the temperature in the hygrothermal aging,but not evidently affected by ultraviolet radiation in UV aging.The prediction of Arrhenius model shows that the EPM will steadily retain 92.8%,89.1%and 79.4%of the original flexural strength after long-term hygrothermal aging at 40∘C,60∘C and 80∘C,respectively. | Xinhua Li Dongpeng Ma Zhaoming Lu Yiping Liu Zhenyu Jiang Liqun Tang Zejia Liu Licheng Zhou | 2021 | Acta Mechanica Solida Sinica2021，34，4： | 0 |
| 17 | Neuronal population dynamic model: An analytic approach显示文摘A novel analytic approach is presented to study the population of excitatory and inhibitory spiking neurons in this paper. The evolution in time of the population dynamic equation is determined by a partial differential equation. A new function is proposed to characterize the population of excitatory and inhibitory spiking neurons, which is different from the population density function discussed by most researchers. And a novel evolution equation, which is a nonhomogeneous parabolic type equation, is derived. From this, the stationary solution and the firing rate of the stationary states are given. Last, by the Fourier transform, the time dependent solution is also obtained. This method can be used to analyze the various dynamic behaviors of neuronal populations. | Wentao Huang Licheng Jiao Yuelei Xu Shiping Ma Jianhua Jia | 2009 | Progress in Natural Science:Materials International2009，19，9： | 0 |
| 18 | BP neural network model for material distribution prediction based on variable amplitude anti-blocking screening DEM simulations显示文摘The material feeding changing of combine harvester is easy to cause accumulation and blockage of the vibrating screen,which seriously affects the harvest operation.In order to alleviate such accumulation and blockages on the vibrating screen surface,the guide chute rotation angle of the improved variable amplitude screening mechanism was selected as the target variable,and EDEM-RecurDyn was employed to simulate the anti-blocking process of the variable amplitude under a changing feeding quantity(0.5 kg/s abnormal,0.2 kg/s normal)of materials(rice grain and stem mixture).A BP(an error back propagation algorithm)neural network was designed and the prediction model of the material distribution was subsequently constructed on the variable screening surface under different chute angles during abnormal feeding.The results revealed a continuous decrease in the quality and time of the material blockage at the front end of the screen surface with the increasing guide chute angle.At the guide chute angle of 20°-45°and adjustment time of 3-6 s,the blocked and accumulated materials at the front-end screen surface was be moved back to Grid 6 for screening.However,overtime,the screen surface materials continued to move back under the chute angle of 40°-45°,which had a great impact on the screening performance.At the guide chute angle of 30°-35°and adjustment time of 4 s,the materials on the screen surface were evenly distributed in Grid 1-6.This was able to alleviate the accumulation and blockage of the screen surface materials.The R of the material distribution prediction model(BP neural network)on the screen surface was determined as 0.97,indicating the high reliability and accuracy of the material distribution model on the screen surface based on the BP neural network.This work provides an important reference for the variable amplitude intelligent control of screen surface material anti-blocking. | Zheng Ma Yongle Zhu Zhiping Wu Souleymane Nfamoussa Traore Du Chen Licheng Xing | 2023 | International Journal of Agricultural and Biological Engineering2023，16，4： | 0 |
| 19 | Image segmentation based on differential immune clone clustering algorithm显示文摘Purpose–The purpose of this paper is to present a Differential Immune Clone Clustering Algorithm(DICCA)to solve image segmentation.Design/methodology/approach–DICCA combines immune clone selection and differential evolution,and two populations are used in the evolutionary process.Clone reproduction and selection,differential mutation,crossover and selection are adopted to evolve two populations,which can increase population diversity and avoid local optimum.After extracting the texture features of an image and encoding them with real numbers,DICCA is used to partition these features,and the final segmentation result is obtained.Findings–This approach is applied to segment all sorts of images into homogeneous regions,including artificial synthetic texture images,natural images and remote sensing images,and the experimental results show the effectiveness of the proposed algorithm.Originality/value–The method presented in this paper represents a new approach to solving clustering problems.The novel method applies the idea two populations are used in the evolutionary process.The proposed clustering algorithm is shown to be effective in solving image segmentation. | Wenping Ma Feifei Ti Congling Li Licheng Jiao | 2013 | International Journal of Intelligent Computing and Cybernetics2013，6，1： | 0 |
| 20 | Trans-dimensional Bayesian geoacoustic inversion in shallow water显示文摘To deal with the inversion problem when the spatial structure of seaffoor sediments is unknown, a trans-dimensional particle filter method is proposed, where the cross-spectral density of the pressure field is used to estimate the sediment layering structure and geoacoustic parameters. The simulation results show that the number of sediment layers and geoacoustic parameters can be effectively estimated using the proposed method, and the parallel particle calculation makes this method more efficient than reversible jump Monte Carlo Markov chain(rjMCMC) sampling. A linear frequency-modulated signal received by a vertical line array in the South China Sea is processed using the proposed trans-dimensional particle filter. The inversion results of the sediment layers and geoacoustic parameters are similar to those acquired by rjMCMC inversion. The number of sediment layers and the posterior probability density of parameters can be effectively estimated using this method. | WU Weiwen REN Qunyan LU Licheng Guo Shengming MA Li | 2023 | Chinese Journal of Acoustics2023，42，4： | 0 |
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