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| 1 | The improved element-free Galerkin method forthree-dimensional wave equation显示文摘The paper presents the improved element-freeGalerkin(IEFG) method for three-dimensional wave propagation.The improved moving least-squares(IMLS) approximation is employed to construct the shape function,whichuses an orthogonal function system with a weight function asthe basis function.Compared with the conventional movingleast-squares(MLS) approximation,the algebraic equationsystem in the IMLS approximation is not ill-conditioned,andcan be solved directly without deriving the inverse matrix.Because there are fewer coefficients in the IMLS than in theMLS approximation,fewer nodes are selected in the IEFGmethod than in the element-free Galerkin method.Thus,theIEFG method has a higher computing speed.In the IEFGmethod,the Galerkin weak form is employed to obtain a discretized system equation,and the penalty method is appliedto impose the essential boundary condition.The traditionaldifference method for two-point boundary value problems isselected for the time discretization.As the wave equationsand the boundary-initial conditions depend on time,the scaling parameter,number of nodes and the time step length areconsidered for the convergence study. | Zan Zhang Dong-Ming Li Yu-Min Cheng Kim Moew Liew | 2012 | Acta Mechanica Sinica2012，28，3： | 12 |
| 2 | Key genes expressed in different stages of spinal cord ischemia/reperfusion injury ischemia/reperfusion injury显示文摘The temporal expression of microRNA after spinal cord ischemia/reperfusion injury is not yet fully understood.In the present study,we established a model of spinal cord ischemia in Sprague-Dawley rats by clamping the abdominal aorta for 90 minutes,before allowing reperfusion for 24 or 48 hours.A sham-operated group underwent surgery but the aorta was not clamped.The damaged spinal cord was removed for hematoxylin-eosin staining and RNA extraction.Neuronal degeneration and tissue edema were the most severe in the 24-hour reperfusion group,and milder in the 48-hour reperfusion group.RNA amplification,labeling,and hybridization were used to obtain the microRNA expression profiles of each group.Bioinformatics analysis confirmed four differentially expressed microRNAs(miR-22-3p,miR-743b-3p,miR-201-5p and miR-144-5p) and their common target genes(Tmem69 and CxcllO).Compared with the sham group,miR-22-3p was continuously upregulated in all three ischemia groups but was highest in the group with no reperfusion,whereas miR-743b-3p,miR-201-5p and miR-144-5p were downregulated in the three ischemia groups.We have successfully identified the key genes expressed at different stages of spinal cord ischemia/reperfusion injury,which provide a reference for future investigations into the mechanism of spinal cord injury. | lian-an Li Chun-fang Zan Peng Xia Chang-jun Zheng Zhi-ping Qi Chun-xu Li Zhi-gang Liu Ting-ting Hou Xiao-yu Yang | 2016 | Neural Regeneration Research2016，11，11： | 9 |
| 3 | Effects of Age on Quality of Beef from Qinchuan Cattle Carcass显示文摘Qinchuan cattle are one of the top breeds in China.In the current study,cattle of different ages were used to investigate the effect of age on beef quality.With increasing age,shear force,protein content,hydroxyproline(Hyp) content,redness(a*),and muscle fiber diameter and density significantly increased(P<0.05).On the other hand,cooking loss,water content,lightness(L*),and muscle fiber gap markedly decreased(P<0.05).No significant differences were found in the contents of intramuscular fat,ash,amino acids(AA),mineral elements,and expression level of leptin and FAS(P>0.05).The C16:0 and C18:0 content increased significantly(P<0.05),in contrast to that of C18:1 and C18:2(P<0.05).COLA1 mRNA was expressed at low levels at mon 3 and 9 but markedly increased at mon 12 and 15(P<0.05).Taken together,these observations demonstrate excellent nutritional values of beef from cattle of different ages concordant with their chemical properties;on the other hand,their commercial value correlates more closely with their physical and sensory characteristics. | LI Lin-qiang TIAN Wan-qiang ZAN Lin-sen | 2011 | Agricultural Sciences in China2011，10，11： | 9 |
| 4 | Potato/Maize intercropping reduces infestation of potato tuber moth, Phthorimaea operculella(Zeller) by the enhancement of natural enemies显示文摘The potato tuber moth(PTM),Phthorimaea operculella(Zeller),is one of the most economically significant insect pests for potato in both field and storage worldwide.To evaluate the infestation,reduction of potato yield and the control efficacy for PTM,field tests were conducted in two seasons by intercropping of potato as the host plant with maize as a non-host plant of PTM.Three intercropping patterns were tested,which were 2 rows of potatoes with either 2,3,or 4 rows of maize(abbreviated 2 P:2 M,2 P:3 M,and 2 P:4 M),and the monocropped potato as the control,2 rows of potatoes,without maize,(abbreviated 2 P:0 M).Results showed that the population and infestation of PTM in the 2 P:3 M intercropping pattern was significantly lower than those in 2 P:2 M,2 P:4 M and the monocropping pattern of 2 P:0 M,due to the enhancement of natural enemies.Cumulative mines and tunneling in potato leaves in 2 P:3 M intercropping were significantly lower than those in 2 P:2 M and 2 P:4 M patterns.The population of parasitoids and the parasitism rate of PTM in intercropping pattern of 2 P:3 M were significantly higher than that in intercropping pattern of 2 P:2 M,2 P:4 M and monocropping pattern of 2 P:0 M.We conclude that the potato intercropped with maize reduced the adult and larva populations,and reduced the damage from PTM by enhancing the number of parasitoids and the level of parasitism.The greatest population density of parasitoids and parasitism rate were in the intercropping pattern of 2 rows of potatoes with 3 rows of maize.These data indicate that the host/non-host intercropping patterns can be used as a biological control tactic against PTM by enhancing the density of natural enemies in the agro-ecosystems. | ZHENG Ya-qiang ZHANG Li-min CHEN Bin YAN Nai-sheng GUI Fu-rong ZAN Qing-an DU Guang-zu HE Shu-qi LI Zheng-yue GAO Yu-lin XIAO Guan-li | 2020 | Journal of Integrative Agriculture2020，19，2： | 8 |
| 5 | Arsenic fractionation and contamination assessment in sediments of thirteen lakes from the East Plain and Yungui Plateau Ecoregions, China显示文摘Arsenic(As) fractions in the sediments of seven lakes from East Plain Ecoregion and six lakes from Yungui Plateau Ecoregion, China, were investigated. Results indicated that the total As concentrations in sediment samples of lakes of the East Plain Lake Ecoregion are higher than those of Yungui Plateau Lake Ecoregion. Residual As is the main fraction in sediment samples of lakes from both ecoregions, followed by reducible As and soluble or oxidizable As. The total As is correlated to oxidizable As and residual As in sediment samples from both lake ecoregions. As distribution in sediment samples of lakes of the East Plain Ecoregion appears to be affected by human activity, while the As origin mainly comes from natural sources in sediment samples of lakes in the Yungui Plateau Ecoregion. The potential ecological risk index and geoaccumulation index values suggest 'low to moderate' risk degree and 'unpolluted to moderately polluted' for As in the studied lake sediments. | Fengyu Zan Shouliang Huo Jingtian Zhang Li Zhang Beidou Xi Lieyu Zhang | 2014 | Journal of Environmental Sciences2014，26，10： | 7 |
| 6 | Hierarchical Ag-SiO_2@Fe_3O_4magnetic composites for elemental mercury removal from non-ferrous metal smelting flue gas显示文摘Hierarchical Ag-SiO_2@Fe_3O_4 magnetic composites were selected for elemental mercury(Hg^0) removal from non-ferrous metal smelting flue gas in this study. Results showed that the hierarchical Ag-SiO_2@Fe_3O_4 magnetic composites had favorable Hg^0 removal ability at low temperature. Moreover, the adsorption capacity of hierarchical magnetic composite is much larger than that of pure Fe_3O_4 and SiO_2@Fe_3O_4. The Hg^0 removal efficiency reached the highest value as approximately 92% under the reaction temperature of 150°C, while the removal efficiency sharply reduced in the absence of O_2. The characterization results indicated that Ag nanoparticles grew on the surface of SiO_2@Fe_3O_4 support. The large surface area of SiO_2 supplied efficient reaction room for Hg and Ag atoms. Ag–Hg amalgam is generated on the surface of the composites. In addition, this magnetic material could be easily separated from fly ashes when adopted for treating real flue gas, and the spent materials could be regenerated using a simple thermal-desorption method. | Yongpeng Ma Bailong Mu Xiaojing Zhang Hongzhong Zhang Haomiao Xu Zan Qu Li Gao | 2019 | Journal of Environmental Sciences2019，31，5： | 7 |
| 7 | Two selenium tolerant Lysinibacillus sp. strains are capable of reducing selenite to elemental Se efficiently under aerobic conditions显示文摘Microbes play important roles in the transport and transformation of selenium(Se) in the environment, thereby influencing plant resistance to Se and Se accumulation in plant. The objectives are to characterize the bacteria with high Se tolerance and reduction capacity and explore the significance of microbial origins on their Se tolerance, reduction rate and efficiency. Two bacterial strains were isolated from a naturally occurred Se-rich soil at tea orchard in southern Anhui Province, China. The reduction kinetics of selenite was investigated and the reducing product was characterized using scanning electron microscopy and transmission electron microscopy-energy dispersive spectroscopy. The bacteria were identified as Lysinibacillus xylanilyticus and Lysinibacillus macrolides,respectively, using morphological, physiological and molecular methods. The results showed that the minimal inhibitory concentrations(MICs) of selenite for L. xylanilyticus and L. macrolides were 120 and 220 mmol/L, respectively, while MICs of selenate for L.xylanilyticus and L. macrolides were 800 and 700 mmol/L, respectively. Both strains aerobically reduced selenite with an initial concentration of 1.0 mmol/L to elemental Se nanoparticles(SeNPs) completely within 36 hr. Biogenic SeNPs were observed both inside and outside the cells suggesting either an intra-or extracellular reduction process. Our study implied that the microbes from Se-rich environments were more tolerant to Se and generally quicker and more efficient than those from Se-free habitats in the reduction of Se oxyanions. The bacterial strains with high Se reduction capacity and the biological synthesized Se NPs would have potential applications in agriculture, food, environment and medicine. | Ju Zhang Yue Wang Zongyuan Shao Jing Li Shuting Zan Shoubiao Zhou Ruyi Yang | 2019 | Journal of Environmental Sciences2019，31，3： | 7 |
| 8 | BFGS quasi-Newton location algorithm using TDOAs and GROAs显示文摘With the emergence of location-based applications in various fields,the higher accuracy of positioning is demanded.By utilizing the time differences of arrival(TDOAs) and gain ratios of arrival(GROAs),an efficient algorithm for estimating the position is proposed,which exploits the Broyden-Fletcher-Goldfarb-Shanno(BFGS) quasi-Newton method to solve nonlinear equations at the source location under the additive measurement error.Although the accuracy of two-step weighted-least-square(WLS) method based on TDOAs and GROAs is very high,this method has a high computational complexity.While the proposed approach can achieve the same accuracy and bias with the lower computational complexity when the signal-to-noise ratio(SNR) is high,especially it can achieve better accuracy and smaller bias at a lower SNR.The proposed algorithm can be applied to the actual environment due to its real-time property and good robust performance.Simulation results show that with a good initial guess to begin with,the proposed estimator converges to the true solution and achieves the Cramer-Rao lower bound(CRLB) accuracy for both near-field and far-field sources. | Benjian Hao Zan Li State | 2013 | Journal of Systems Engineering and Electronics2013，24，3： | 6 |
| 9 | Molecular characteristics and evolutionary analysis of a very virulent infectious bursal disease virus显示文摘Infectious bursal disease virus(IBDV) poses a significant threat to the poultry industry. Viral protein 2(VP2), the major structural protein of IBDV, has been subjected to frequent mutations that have imparted tremendous genetic diversity to the virus. To determine how amino acid mutations may affect the virulence of IBDV, we built a structural model of VP2 of a very virulent strain of IBDV identified in China, vv IBDV Gx, and performed a molecular dynamics simulation of the interaction between virulence sites. The study showed that the amino acid substitutions that distinguish vv IBDV from attenuated IBDV(H253Q and T284A) favor a hydrophobic and flexible conformation of ?-barrel loops in VP2, which could promote interactions between the virus and potential IBDV-specific receptors. Population sequence analysis revealed that the IBDV strains prevalent in East Asia show a significant signal of positive selection at virulence sites 253 and 284. In addition, a signal of co-evolution between sites 253 and 284 was identified. These results suggest that changes in the virulence of IBDV may result from both the interaction and the co-evolution of multiple amino acid substitutions at virulence sites. | LI Zan QI XiaoLe REN XianGang CUI Lei WANG XiaoMei ZHU Ping | 2015 | Science China(Life Sciences)2015，58，8： | 6 |
| 10 | A Versatile Method for Uniform Dispersion of Nanocarbons in Metal Matrix Based on Electrostatic Interactions显示文摘Realizing the uniform dispersion of nanocarbons such as carbon nanotube and graphene in metals, is an essential prerequisite to fully exhibit their enhancement effect in mechanical, thermal, and electrical properties of metal matrix composites(MMCs). In this work, we propose an effective method to achieve uniform distribution of nanocarbons in various metal flakes through a slurry-based method. It relies on the electrostatic interactions between the negatively charged nanocarbons and the positively charged metal flakes when mixed in slurry. For case study, flake metal powders(Al, Mg, Ti,Fe, and Cu) were positively charged in aqueous suspension by spontaneous ionization or cationic surface modification. While nanocarbons, given examples as carboxylic multi-walled carbon nanotubes, pristine single-walled carbon nanotube, and carbon nanotube–graphene oxide hybrid were negatively charged by the ionization of oxygen-containing functional groups or anionic surfactant. It was found that through the electrostatic interaction mechanism, all kinds of nanocarbons can be spontaneously and efficiently adsorbed onto the surface of various metal flakes. The development of such a versatile method would provide us great opportunities to fabricate advanced MMCs with appealing properties. | Zan Li Genlian Fan Zhanqiu Tan Zhiqiang Li Qiang Guo Dingbang Xiong Di Zhang | 2016 | Nano-Micro Letters2016，8，1： | 5 |
| 11 | Altered functional connectivity networks of hippocampal subregions in remitted late-onset depression:a longitudinal resting-state study显示文摘在迟了生活的消沉(LLD ) 的海马趾的畸形的地区性的特性在以前的研究被表明了。在这研究,我们寻求了检验功能的连接(FC ) 在汇寄的迟了发作的消沉(rLOD ) 的海马趾的分区的模式, LLD 的一种特殊子类型。十四个 rLOD 病人和 18 健康控制象功能的磁性的回声成像在基线并且在 21 月后续扫描的休息状态一样经历了临床、认知的评估。每马头鱼尾的怪兽被划分成三部分,角 ammonis (CA ) ,有牙齿的回转,和 subicular 建筑群,然后六个基于种子的海马趾的分区网络被建立。六个网络的纵的变化直接随着时间的过去在 rLOD 和控制组之间被比较。从基线到后续,在左 CA 的连接给更大的衰落看到双边的以后的 cingulate cortex/precuneus (PCC/PCUN ) ,但是出现的 rLOD 组与正面的外皮(双边的中间的前额的 cortex/anterior cingulate 外皮和增补马达区域) 增加了恰好海马趾的分区网络的连接。进一步的关联词分析表明在在左 CA 和 PCC/PCUN 之间的 FC 的纵的变化断然在标志位形式测试与纵的变化被相关( r = 0.624 , P = 0.017 )并且位跨度测试( r = 0.545 , P = 0.044 )在 rLOD 组得分。这些结果可以提供卓见进在 rLOD 病人位于认知机能障碍下面的 neurobiological 机制。 | Zan Wang Yonggui Yuan Feng Bai Hao Shu Jiayong You Lingjiang Li Zhijun Zhang | 2015 | Neuroscience Bulletin2015，31，1： | 4 |
| 12 | Complement components of nerve regeneration conditioned fluid influence the microenvironment of nerve regeneration显示文摘Nerve regeneration conditioned fluid is secreted by nerve stumps inside a nerve regeneration chamber.A better understanding of the proteinogram of nerve regeneration conditioned fluid can provide evidence for studying the role of the microenvironment in peripheral nerve regeneration.In this study,we used cylindrical silicone tubes as the nerve regeneration chamber model for the repair of injured rat sciatic nerve.Isobaric tags for relative and absolute quantitation proteomics technology and western blot analysis confirmed that there were more than 10 complement components(complement factor I,C1q-A,C1q-B,C2,C3,C4,C5,C7,C8β and complement factor D) in the nerve regeneration conditioned fluid and each varied at different time points.These findings suggest that all these complement components have a functional role in nerve regeneration. | Guang-shuai Li Qing-feng Li Ming-min Dong Tao Zan Shuang Ding Lin-bo Liu | 2016 | Neural Regeneration Research2016，11，4： | 4 |
| 13 | A Fuzzy PID Algorithm for a Novel Miniature Spherical Robots with Three-dimensional Underwater Motion Control显示文摘We proposed and developed a small bionic amphibious spherical robot system for tasks such as coastal environment monitoring and offshore autonomous search and rescue.Our third-generation bionic small amphibious spherical robots have many disadvantages,such as the lack of maneuverability and a small operating range.It is difficult to accomplish underwater autonomous motion control with these robots.Therefore,we proposed a fourth-generation amphibious spherical robot.However,the amphibious spherical robot developed in this project has a small and compact design,with limited sensors and external sensing options.This means that the robot has weak external information collection capabilities.We need to make the real time operation of the robot's underwater motion control system more reliable.In this paper,we mainly used a fuzzy Proportional-Integral-Derivative(PID)control algorithm to design an underwater motion control system for a novel robot.Moreover,we compared PID with fuzzy PID control methods by carrying out experiments on heading and turning bow motions to verify that the fuzzy PID is more robust and exhibits good dynamic performance.We also carried out experiments on the three-dimensional(3D)motion control to validate the design of the underwater motion control system. | Liwei Shi Yao Hu Shuxiang Su Shuxiang Guo Huiming Xing Xihuan Hou Yu Liu Zhan Chen Zan Li Debin Xia | 2020 | Journal of Bionic Engineering2020，17，5： | 4 |
| 14 | Method of neural network modulation recognition based on clustering and Polak-Ribiere algorithm显示文摘To improve the recognition rate of signal modulation recognition methods based on the clustering algorithm under the low SNR, a modulation recognition method is proposed. The characteristic parameter of the signal is extracted by using a clustering algorithm, the neural network is trained by using the algorithm of variable gradient correction(Polak-Ribiere) so as to enhance the rate of convergence, improve the performance of recognition under the low SNR and realize modulation recognition of the signal based on the modulation system of the constellation diagram.Simulation results show that the recognition rate based on this algorithm is enhanced over 30% compared with the methods that adopt clustering algorithm or neural network based on the back propagation algorithm alone under the low SNR. The recognition rate can reach 90% when the SNR is 4 d B, and the method is easy to be achieved so that it has a broad application prospect in the modulating recognition. | Faquan Yang Zan Li Hongyan Li Haiyan Huang Zhongxian Pan | 2014 | Journal of Systems Engineering and Electronics2014，25，5： | 4 |
| 15 | Comprehensive strategy of conduit guidance combined with VEGF producing Schwann cells accelerates peripheral nerve repair显示文摘Peripheral nerve regeneration requires stepwise and well-organized establishment of microenvironment.Since local delivery of VEGF-A in peripheral nerve repair is expected to promote angiogenesis in the microenvironment and Schwann cells(SCs)play critical role in nerve repair,combination of VEGF and Schwann cells may lead to efficient peripheral nerve regeneration.VEGF-A overexpressing Schwann cells were established and loaded into the inner wall of hydroxyethyl cellulose/soy protein isolate/polyaniline sponge(HSPS)conduits.When HSPS is mechanically distorted,it still has high durability of strain strength,thus,can accommodate unexpected strain of nerve tissues in motion.A 10 mm nerve defect rat model was used to test the repair performance of the HSPS-SC(VEGF)conduits,meanwhile the HSPS,HSPS-SC,HSPS-VEGF conduits and autografts were worked as controls.The immunofluorescent co-staining of GFP/VEGF-A,Ki67 and MBP showed that the VEGF-A overexpressing Schwann cells could promote the proliferation,migration and differentiation of Schwann cells as the VEGF-A was secreted from the VEGF-A overexpressing Schwann cells.The nerve repair performance of the multifunctional and flexible conduits was examined though rat behavioristics,electrophysiology,nerve innervation to gastrocnemius muscle(GM),toluidine blue(TB)staining,transmission electron microscopy(TEM)and NF200/S100 double staining in the regenerated nerve.The results displayed that the effects on the repair of peripheral nerves in HSPS-SC(VEGF)group was the best among the conduits groups and closed to autografts.HSPS-SC(VEGF)group exhibited notably increased CD31+endothelial cells and activation of VEGFR2/ERK signaling pathway in the regenerated nerve tissues,which probably contributed to the improved nerve regeneration.Altogether,the comprehensive strategy including VEGF overexpressing Schwann cells-mediated and HSPS conduit-guided peripheral nerve repair provides a new avenue for nerve tissue engineering. | Ping Wu Zan Tong Lihua Luo Yanan Zhao Feixiang Chen Yinping Li Céline Huselstein Qifa Ye Qingsong Ye Yun Chen | 2021 | Bioactive Materials2021，6，10： | 4 |
| 16 | An injectable and self-healing hydrogel with controlled release of curcumin to repair spinal cord injury显示文摘The harsh local micro-environment following spinal cord injury(SCI)remains a great challenge for neural regeneration.Local reconstitution of a favorable micro-environment by biocompatible scaffolds with desirable functions has thus been an area of concern.Herein,a hybrid hydrogel was developed using Fmoc-grafted chitosan(FC)and Fmoc peptide(FI).Dynamic reversibleπ-πstacking interactions of the fluorenyl rings enabled the FC/FI hybrid hydrogel to exhibit excellent injectable and self-healing properties,as characterized by visual appearances and rheological tests.Furthermore,the FC/FI hybrid hydrogel showed a slow and persistent release of curcumin(Cur),which was named as FC/FI-Cur hydrogel.In vitro studies confirmed that with the support of FC/FI-Cur hydrogel,neurite outgrowth was promoted,and Schwann cell(SC)migration away from dorsal root ganglia(DRG)spheres with enhanced myelination was substantiated.The FC/FI-Cur hydrogel well reassembled extracellular matrix at the lesion site of rat spinal cord and exerted outstanding effects in modulating local inflammatory reaction by regulating the phenotypes of infiltrated inflammatory cells.In addition,endogenous SCs were recruited in the FC/FI-Cur graft and participated in the remyelination process of the regenerated nerves.These outcomes favored functional recovery,as evidenced by improved hind limbs movement and enhanced electrophysiological properties.Thus,our study not only advanced the development of multifunctional hydrogels but also provided insights into comprehensive approaches for SCI repair. | Jinghua Luo Xueshuang Shi Liming Li Zan Tan Feng Feng Jun Li Mao Pang Xiaoying Wang Liumin He | 2021 | Bioactive Materials2021，6，12： | 4 |
| 17 | PANSYSTEMS LOGIC:A NEW LOGIC FRAMEWORK FOR ARTIFICIAL INTELLIGENCE显示文摘Zan Tingquan and Wu Xuemou, Pansystems logic: a new logic fra-mework for AI.In this artic1e, we take a step towards providing a new logic fra-mework as a basis for human and artificial intelligence.We unite logic,epistemology, cognitive science, methodology and s ystems sciences tostudy cognitive processes and forms of thought and try to construct anew logic framework by use of pansystems metllodology.The new logicframework is called pansystems Logic.Included are:(1)propose the concepts of generalized. subjects and generalizedobjects, articulate the pansystems observocontrol relativity principle asa new model of cognitive foundations for artifitial intelligence.(2)present fifteen layer-parts of artifitial intelligence researchfrom the new view, i.e.AI concerns with five aspects of man, things,the relations between man and things, artificial systems, the relations be-tween the former three and the latter one,which should be studied fromthree levels of philosophical, mathematical and technical researches. | Zan Tingquan Li Yongli(Northwest Development Institute, Lanzhou University, Lanzhou 730000,Gansu,People’s Republic of China)Wu Xuemou(China Digital Engineering Institute,P。O。Box 74223, Wuchang 430074,Hubei,People’s Republic of China) | 1991 | 天水师范学院学报1991，11，4： | 4 |
| 18 | How to Select the Best Sensors for TDOA and TDOA/AOA Localization?显示文摘This paper focuses on the sensor subset optimization problem in time difference of arrival(TDOA) passive localization scenario. We seek for the best sensor combination by formulating a non-convex optimization problem, which is to minimize the trace of covariance matrix of localization error under the condition that the number of selected sensors is given. The accuracy metric is described by the localization error covariance matrix of classical closed-form solution, which is introduced to convert the TDOA nonlinear equations into pseudo linear equations. The non-convex optimization problem is relaxed to a standard semi-definite program(SDP) and efficiently solved in a short time. In addition, we extend the sensor selection method to a mixed TDOA and angle of arrival(AOA) localization scenario with the presence of sensor position errors. Simulation results validate that the performance of the proposed sensor selection method is very close to the exhaustive search method. | Yue Zhao Zan Li Benjian Hao Pengwu Wan Linlin Wang | 2019 | China Communications2019，16，2： | 3 |
| 19 | Effects of the Residues of Cuscuta campestris and Mikania micrantha on Subsequent Plant Germination and Early Growth显示文摘Cuscuta campestris,a dodder,can parasitize and suppress a scrambling herbaceous to semi-woody perennial vine,Mikania micrantha,one of the most destructive weeds in the world.To assess the effects of the mixed residue of C.campestris and M.micrantha on the subsequent plant community,we conducted a one-year experiment on the germination and seedling growth of subsequent plant community after the application of C.campestris.Seven treatments of varying proportions of C.campestris and M.micrantha residue on 21 subject trees and shrubs,which were commonly found in South China,resulted in a germination rate of 35.3% for all 8 715 seeds from 18 species,ranging from 5.7 to 81.9%;the remaining 3 species failed to germinate.ANOVA analysis showed that the residue did not affect the germination,growth,or mortality of the trees and shrubs.The germinated C.campestris seeds from the residue coiled the seedlings of most of the species,but less than 4% host death caused by C.campestris.In addition,the residue did not affect the germination of the herbaceous seedlings originating from the loam,and the similarity coefficients of the germinated seedlings between the treatments were very high.These results suggested that the residue had no negative impact on the germination and early seedling stages of the tree,shrub and grass species of the subsequent plant community.The use of C.campestris residue had a positive effect on the growth of M.micrantha,but it did not change the trend of M.micrantha being suppressed because re-parasitization occurred soon after the growth restarted.No negative effect was detected on the other species as a result of the parasitization of C.campestris or by the use of the mixed residue.This suggests that C.campestris is likely to be an effective and promising ecologically safe native herbaceous agent for controlling M.micrantha. | LI Feng-lan LI Ming-guang ZAN Qi-jie GUO Qiang ZHANG Wei-yin WU Zhi WANG Yong-jun | 2012 | Journal of Integrative Agriculture2012，11，11： | 3 |
| 20 | Cognitive Frequency Hopping Sequences显示文摘Since the immutable conventional Frequency hopping(FH) sequence cannot keep high FH communication reliability in complex electromagnetic environment, we propose an algorithm that can generate high-performance Cognitive frequency hopping sequence(CFHS) for Cognitive frequency hopping(CFH) system.By employing the pseudo-random perturbation mapping,the CFHS is generated by remapping the block cipher FH sequence with the adaptive frequency slot number and frequency gap. The CFHS inherits the great integrated performance and its parameters could change with the electromagnetic environment. The statistics properties of Markov and uniformity are analyzed based on the Markov process theory and probability theory. Simulation results show that CFHS outperforms the widely-used FH sequences on the performance of uniformity, randomness, Hamming correlation, complexity and sensitivity. The proposed CFHS could be extensively applied in high reliable CFH system. | GUAN Lei LI Zan HAO Benjian SI Jiangbo NING Ben | 2016 | Chinese Journal of Electronics2016，25，1： | 3 |
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