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| 1 | A New Robust Watermarking Algorithm for Vector Data显示文摘Because the existing vector data watermarking algorithm is insufficiently robust for compression and cropping,and has no sufficient control on map deformation,a new watermarking algorithm was proposed in this paper.Its main features are:① it selected feature points and non-feature points from the sequence of Douglas,and then embedded watermarking points by wavelet transform,which is based on layer segmentation;② it enhanced the map deformation control design.Furthermore,it increased the map graphic deformation control design.The algorithm was applied to experimental data,and the test results showed that the algorithm had good robustness on graphics geometric transformation,the addition,deletion and cropping of points in graph layers.Also,the graph distortion had been well controlled. | ZHANG Lei YAN Dashun JIANG Shujuan SHI Tingting | 2010 | Wuhan University Journal of Natural Sciences2010，15，5： | 2 |
| 2 | Dynamics in a periodic competitive model with stage structure显示文摘 | Dashun Xu Xiao-Qiang Zhao | 2005 | Journal of Mathematical Analysis and Applications2005，，2： | 1 |
| 3 | The Ritual Landscape of 'Boar Mountain' Basin: The Niuheliang Site Complex of Northeastern China 显示文摘 | Barnes Gina L Guo Dashun | 1996 | World Archaeology1996，，2： | 1 |
| 4 | An empirical study of SLDA for information retrieval 显示文摘 | MA Dashun RAO Lan WANG Ting | 2011 | Information Retrieval Technology2011，，1： | 1 |
| 5 | Bifurcations, chaos, and system collapse in a three node power system显示文摘 | Jing Zhujun Xu Dashun Chang Yu | 2003 | J of Electrical Power and Energy Systems2003，25，6： | 1 |
| 6 | Quantifying Long-Term Scientific Impact显示文摘 | Dashun Wang Chaoming Song Albert-László Barabási | 2013 | Science2013，，6154： | 1 |
| 7 | Dynamics in a periodic competitive model with stage structure 显示文摘 | Xu Dashun Xiaoqiang Zhao | 2005 | Mathematical Analysis and Applications2005，311，： | 1 |
| 8 | Bifurcations,chaos,and system collapse in a three node power system显示文摘 | JING Zhujun XU Dashun CHANG Yu | 2003 | ElectricalPower and Energy Systems2003，25，6： | 1 |
| 9 | Medical Images Denoising Based on Total Variation Algorithm显示文摘 | Li Bei Que Dashun | 2011 | Procedia Environmental Sciences2011，8，： | 1 |
| 10 | Bifurcations,chaos,and system collapse in a three node power system显示文摘 | Zhujun Jing Dashun Xu Yu Chang | | 0，，： | 1 |
| 11 | High loading carbon nanotubes deposited onto porous nickel yarns by solution imbibition as flexible wire-shaped supercapacitor electrodes显示文摘The deposition of active materials directly onto metal wires is a general strategy to prepare wire-shaped electrodes for flexible and wearable energy storage devices. However, it is still a critical challenge to coat active materials onto the aimed metal wires because of their smooth surface and small specific surface area. In this work, high porous nickel yarns(PNYs) was fabricated using commercial nylon yarns as templates through step-wise electroless plating, electroplating and calcination processes. The PNYs are composed of multiplied fibers with hollow tubular structure of 5–10 μm in diameter, allowing the imbibition of carbon nanotubes(CNTs) solution by a facile capillary action process. The prepared CNTs/PNY electrodes showed a typical electrochemical double layer capacitive performance and the constructed allsolid flexible wire-shaped symmetric supercapacitors provided a specific capacitance of 4.67 F/cm3 with good cycling stability at a current density of 0.6 A/cm3. | Chaoqun Kang Dashun Cao Yuejiao Liu Zhiwei Liu Ruiqing Liu Xiaomiao Feng Dan Wang Yanwen Ma | 2018 | Journal of Energy Chemistry2018，27，3： | 1 |
| 12 | Medical images denoising basedon totalvariation algorithm 显示文摘 | Li Bei Que Dashun | 2011 | Procedia Environmental Sciences2011，8，： | 1 |
| 13 | Global dynamics and optimal control of an influenza model with vaccination, media coverage and treatment显示文摘 | Lianwen Wang Zhijun Liu Dashun Xu Xinan Zhang | 2017 | International Journal of Biomathematics2017，10，5： | 0 |
| 14 | Synthesis and Structure of a Novel Tetranuclear Erbium(Ⅲ) Complex with L-Proline(HPro)[Er_4(HPro)_4(Pro)_2·(μ_3-OH)_4(H_2O)_7](ClO_4)_6·6H_2O显示文摘The title complex was synthesized in an aqueous solution and its crystal structure was determined by Xray diffraction. The crystal is rhombohedral, space group R3 with a=1.947 0(3) nm, b=1.947 0(3) nm, c=1.768 3(3) nm, α=90°, β=90°, γ=120°, V=5.805(2) nm3, Z=3 , the final R value is 0.051 2. The complex contains a novel tetranuclear cation with four Er 3+ ions connected by four μ 3OH ions and six bridging carboxyl groups. Each erbium ion is coordinated by three μ 3OH, three carboxylic oxygen atoms from three Lproline, and two or one oxygen atoms from water molecules. | ZHANG Dashun BU Weiming YANG Weichun LI Junran JIN Tianzhu YE Ling FAN Yuguo | 2000 | Chemical Research in Chinese Universities2000，16，2： | 0 |
| 15 | Synthesis and Structure of a Novel Tetranuclear Erbium( Ⅲ) Complex with α-Alanine[Er_4(HAla)_6·(μ_3-OH)_4(H_2O)_8](ClO_4)_8·3H_2O显示文摘The title complex was synthesized in an aqueous solution and its crystal structure was determined by Xray diffraction. The crystal crystallizes in a triclinic system, space group P1 with a= 1.306 3(2) nm , b=1.319 4(4) nm, c=1.950 2(4) nm, α=90.597(14)°, β= 93.998(11)° , γ=94.093(13)°, V=3.344 1(12) nm3, Z=2, the final R indices are R 1= 0.065 4 , wR 2=0.126 2 respectively. The complex contains a novel tetranuclear cluster cation with four Er 3+ ions connected by four μ 3OH ions and six bridging carboxyl groups. Each erbium ion is coordinated by three μ 3OH, three carboxylic oxygen atoms from three αalanine and two oxygen atoms from water molecules, forming a squareantiprismatic coordination polyhedron. | ZHANG Dashun BU Weiming YANG Weichun LI Junran JIN Tianzhu YE Ling FAN Yuguo | 2000 | Chemical Research in Chinese Universities2000，16，2： | 0 |
| 16 | Mixing in regional-structure model about the influence of floating population and optimal control about TB in Guangdong province of China显示文摘 | Chuanqing Xu Xiaoxiao Wei Jingan Cui Xiaojing Wang Dashun Xu | 2017 | International Journal of Biomathematics2017，10，8： | 0 |
| 17 | Effects of manganese substitution on magnetic and magnetostrictive properties of Tb_(0.5)Dy_(0.5)(Fe_(1-x)Mn_(x))_(1.92)/epoxy composites with spherical single-crystal particles显示文摘Spherical Tb_(0.5)Dy_(0.5)(Fe_(1-x)Mn_(x))_(1.92)(x=0,0.05,0.10 and 0.15)single-crystal particles were prepared.The magnetic anisotropy of the alloy decreases as x increases from 0 to 0.15.Subsequently,we prepared giant magnetostrictive composites with these spherical Tb_(0.5)Dy_(0.5)(Fe_(1-x)Mn_(x))_(1.92)single-crystal particles.As a consequence,well<111>-orie nted Tb_(0.5)Dy_(0.5)(Fe_(1-x)Mn_(x))_(1.92)composites with 55 vol%Tb_(0.5)Dy_(0.5)(Fe_(1-x)Mn_(x))_(1.92)particles were obtained.The Tb_(0.5)Dy_(0.5)(Fe_(0.9)Mn_(0.1))_(2)composite manifests a good low-field magnetostrictive property and saturation magnetostriction at an axial pressure of 10 MPa,λ_(‖,saturation)≈2100 ppm,which is larger than that of the commercially available Terfenol-D(1400-1800 ppm).The preparation of composites with single crystal spherical powders may be an effective solution of developing high-performance magnetostrictive composites. | Dashun Dong Geng Wei Jin Qian Ye Huang Li Zhang Hehe Ding Yangguang Shi Shaolong Tang | 2023 | Journal of Rare Earths2023，41，8： | 0 |
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