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| 1 | Noether symmetries of the nonconservative and nonholonomic systems on time scales显示文摘In this paper we give a new method to investigate Noether symmetries and conservation laws of nonconservative and nonholonomic mechanical systems on time scales , which unifies the Noether's theories of the two cases for the continuous and the discrete nonconservative and nonholonomic systems. Firstly, the exchanging relationships between the isochronous variation and the delta derivatives as well as the relationships between the isochronous variation and the total variation on time scales are obtained. Secondly, using the exchanging relationships, the Hamilton's principle is presented for nonconservative systems with delta derivatives and then the Lagrange equations of the systems are obtained. Thirdly, based on the quasi-invariance of Hamiltonian action of the systems under the infinitesimal transformations with respect to the time and generalized coordinates, the Noether's theorem and the conservation laws for nonconservative systems on time scales are given. Fourthly, the d'Alembert-Lagrange principle with delta derivatives is presented, and the Lagrange equations of nonholonomic systems with delta derivatives are obtained. In addition, the Noether's theorems and the conservation laws for nonholonomic systems on time scales are also obtained. Lastly, we present a new version of Noether's theorems for discrete systems. Several examples are given to illustrate the application of our results. | CAI PingPing FU JingLi GUO YongXin | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，5： | 52 |
| 2 | Clinical and pathological features of miR-10b and RHOC gene expression in hepatocellular carcinoma显示文摘Aberrant expression of microRNAs(miRNAs)was reported frequently in different human cancers.The major role of miRNA is targeting 30-UTR of coding gene and causing translational repression or mRNA degradation.miR-10b overexpression was reported to promote breast cancer metastasis by up-regulating RHOC expression.But its expression in hepatocellular carcinoma(HCC)remains unclear.Our study indicated that the expression of miR-10b was different in HCC and adjacent tissue samples,and reduced expression of miR-10b in HCC was related tovein invasion.High-level expression of RHOC was also related to vein invasion in HCC.But no correlation was found between miR-10b and RHOC expression.These results suggest that miR-10b and RHOC are independent predictors of HCC invasion and metastasis. | Jingli Du Yulan Wang Hanjiang Fu Xiaofei Zheng Minggui Lin Mingzhou Guo Lixin Wei | 2014 | Chinese Science Bulletin2014，59，19： | 4 |
| 3 | FURTHER RESULTS ON LIMITATIONS OF SAMPLED-DATA FEEDBACK显示文摘To control continuous-time uncertain dynamical systems with sampled data-feedback is prevalent today,but the sampling rate is usually not allowed to be arbitrarily fast due to various physical and/or computational constrains.In this paper,the authors examine the limitations of sampled-data feedback control for a class of uncertain systems in continuous-time,with sampling rate not necessary fast enough and with the unknown system structure confined to a set of functions with both linear and nonlinear growth.The limitations of the sampled-data feedback control for the uncertain systems are established quantitatively,which extends the existing related results in the literature. | REN Jingli CHENG Zhibo GUO Lei | 2014 | Journal of Systems Science & Complexity2014，27，5： | 4 |
| 4 | Interstitial copper-doped edge contact for n-type carrier transport in black phosphorus显示文摘Black phosphorus(BP)has been shown as a promising two-dimensional(2D)material for electronic devices owing to its high carrier mobility.To realize complementary electronic circuits with 2D materials,it is important to fabricate both n-type and p-type transistors with the same channel material.By engineering the contact region with copper(Cu)-doped BP,here we demonstrate an n-type carrier transport in BP field-effect transistors(FETs),which usually exhibit strongly p-type characteristics.Cu metal atoms are found to severely penetrate into the BP flakes,which forms interstitial Cu(Cuint)-doped edge contact and facilitates the electron transport in BP.Our BP FETs in backgated configuration exhibit n-type dominant characteristics with a high electron mobility of^138 cm^2 V^−1 s^−1 at room temperature.The Schottky barrier height for electrons is relatively low because of the edge contact between Cuint-doped BP and pristine BP channel.The contact doping of BP by highly mobile Cu atoms gives rise to n-type transport property of BP FETs.Furthermore,we demonstrate a p-n junction on the same BP flake with asymmetric contact.This strategy on contact engineering can be further extended to other 2D materials. | Ziyuan Lin Jingli Wang Xuyun Guo Jiewei Chen Chao Xu Mingqiang Liu Bilu Liu Ye Zhu Yang Chai | 2019 | InfoMat2019，1，2： | 2 |
| 5 | Graphite blocks with high thermal conductivity derived from natural graphite flake显示文摘 | Zhanjun Liu Quangui Guo Jingli Shi | 2008 | Carbon2008，46，3： | 1 |
| 6 | A study on crosslinking of phenolic fibers 显示文摘 | Liu Chunling Guo Quangui Shi Jingli | 2005 | Mater Chem Phys2005，90，23： | 1 |
| 7 | Graphite blockswith high thermal conductivity derived from natural graphiteflake显示文摘 | Zhanjun Liu Quangui Guo Jingli Shi | 2008 | Carbon2008，46，： | 1 |
| 8 | Effect of ZrB 2 on the ablation properties of carbon composites显示文摘 | Xiutao Li Jingli Shi Guobing Zhang Hua Zhang Quangui Guo Lang Liu | 2005 | Materials Letters2005，，7： | 1 |
| 9 | Pattern Synthesis of Conformal Array Antenna in the Presence of Platform Using Differential Evolution Algorithm 显示文摘 | Guo Jingli Li Jianying | 2009 | IEEE Trans on Antennas Propag2009，57，9： | 1 |
| 10 | A study on crosslinking of phenolic fibers显示文摘 | ChunLin Liu QuanGui Guo JingLi Shi | 2005 | Materials Chemistry and Physics2005，90，： | 1 |
| 11 | Fabrication and mechanical/conductive properties of multi-walled carbon nanotube (MWNT) reinforced carbon matrix composites显示文摘 | Xiaoqing Gao Lang Liu Quangui Guo Jingli Shi Gengtai Zhai | 2005 | Materials Letters2005，，24： | 1 |
| 12 | Analysis of arbitrarily shaped dielectric radomes using adaptive in- tegral method based on volume integral equation显示文摘 | GUO Jingli LI Jianying LIU Qizhong | 2006 | IEEE Transactions on Antennas and Propagation2006，54，7： | 1 |
| 13 | Carbon seal materials with superior mechanical properties and fine-grained structure fabricated by a new process显示文摘 | Zhanjun Liu Quangui Guo Yan Song Jingli Shi Jinren Song Lang Liu | 2006 | Materials Letters2006，，8： | 1 |
| 14 | Graphite blocks with high thermal conductivity derived from natural graphite flake显示文摘 | Liu Zhanjun Guo Quangui Shi Jingli | 2008 | Carbon2008，，46： | 1 |
| 15 | Oxidation protective behavior of SiC/Si - MoSi2 coating for different graphite matrix 显示文摘 | Zhao Juan Liu Lang Guo Quangui Shi Jingli Zhai Gengtai | 2006 | Materials Letters2006，60，16： | 1 |
| 16 | Carbon with high thermal conductivity,prepared from ribbon-shaped mesosphase pitch-based fibers显示文摘 | Zhaokun Ma Jingli Shi Yah Song Quangui Guo Gengtai Zhai Lang Liu | 2006 | Carbon2006，44，： | 1 |
| 17 | Carbon with high thermal conductivity,prepared from ribbon-shaped mesosphase pitch-based fibers显示文摘 | Jingli Shi Yan Song Quangui Guo Gengtai Zhai and Lang Liu | 2006 | Carbon2006，44，7： | 1 |
| 18 | 显示文摘 | Liu Chunling Guo Quangui Shi Jingli | 2004 | New carbon materials2004，19，： | 1 |
| 19 | Mo 2 C intermediate layers for graphite–Cu system using the molten salt method显示文摘 | Jinliang Song Quangui Guo Zechao Tao Xiaoqing Gao Ping Shen Jingli Shi Lang Liu | 2011 | Fusion Engineering and Design2011，，12： | 1 |
| 20 | Design of a prediction system based on the dynamical feed-forward neural network显示文摘Analysis and prediction of time series play a significant role in scientific fields of meteorology,epidemiology,and economy.Efficient and accurate prediction of signals can give an early detection of abnormal variations,provide guidance on preparing a timely response and avoid presumably adverse impacts.In this paper,a prediction system is designed based on the dynamical feed-forward neural network.The trajectory information in the reconstructed phase space,which is topologically equivalent to the dynamical evolution of the system,is applied to establish the prediction model.Moreover,an integer constrained particle swarm optimization algorithm is employed to select the optimal time delay,which is the parameter of our system.Simulation results for applications on the Lorenz system,stock market index,and influenza data indicate that our proposed method can produce efficient and reliable predictions. | Xiaoxiang GUO Weimin HAN Jingli REN | 2023 | Science China(Information Sciences)2023，66，1： | 1 |
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