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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 | High speed interpolation for micro-line trajectory and adaptive real-time look-ahead scheme in CNC machining显示文摘CNC machining plays an important role in mechanical manufacturing.A key issue is to improve the machining feedrate while keeping the machining precision and satisfying the acceleration constraints of the CNC machine.For the consecutive micro-line segments interpolation,the velocities at the junction of two segments are the bottlenecks for the machining efficiency.This paper proposes a multi-period turning method to improve the feedrate at the junctions using the linear acceleration and deceleration mode,which utilizes the maximal acceleration capabilities of the NC machine while satisfying the machining precision.A new and more efficient look-ahead method and a feedrate override method are also proposed to boast the global machining speed.The proposed algorithm has been implemented on Blue Sky NC System,and experimented in real material manufacturing.Compared with several existing algorithms,the current algorithm can improve the manufacturing time ranging from 50% to 180%,depending on the machining parameters,and also results in better machining quality.In addition,the algorithm also satisfies the need of real-time interpolation. | ZHANG LiXian SUN RuiYong GAO XiaoShan LI HongBo | 2011 | Science China(Technological Sciences)2011，54，6： | 17 |
| 3 | AUTOMATED REASONING IN DIFFERENTIAL GEOMETRY AND MECHANICS USING THE CHARACTERISTIC METHOD Ⅳ. Bertrand Curves显示文摘This paper reports the study of properties of the curve pairs of the Bertrandtypes using our automated reasoning program based on Wu’s method of mechanical the-orem proving for differential geometry. A complete list of results about Bertrand curvesin metric and affine spaces is derived mechanically. The list includes most of the knownresults of various Bertrand curves. We also derive some new results about Bertrand curves. | CHOU Shangching GAO Xiaoshan Department of Computer Science,the Wichita State University,Wichita,KS 67260,UsA Institute of Systems Science, Academia Sinica, Beijing 100080, China | 1993 | Systems Science and Mathematical Sciences1993，6，2： | 8 |
| 4 | Structural basis for the recognition of Asef by adenomatous polyposis coli显示文摘Adenomatous polyposis coli (APC ) 通过激活刺激 APC 的 guanine 核苷酸交换因素调整房间房间粘附和房间移植(GEF;Asef ) ,它通常是通过在它的 Src 相同之间的绑定的 autoinhibited 3 (SH3 ) 并且 Dbl 相同(DH ) 领域。激活 APC 的 Asef 刺激小 GTPase Cdc42,它导致减少的房间房间坚持和提高的房间移植。在 colorectal 癌症,组成地截断了 APC 激活 Asef 并且支持癌症房间移植和 angiogenesis。这里,我们报导人的 APC/Asef 建筑群的水晶结构。我们发现 APC 的犰狳重复域使用一条高度保存的表面沟认出 Asef 的 APC 有约束力的区域(ABR ) ,哪个在绑定之上戏剧性地改变到 APC 的符合构造。为复杂形成的 APC 和 Asef 上的关键残余被变异,他们的重要性被绑定和活动试金表明。有 autoinhibited Asef 的 APC/Asef 建筑群的结构的重迭建议在 APC 和 Asef 之间的绑定可能创造在 Asef-DH 领域和 APC 之间的位的碰撞,它可能在刺激它的 GEF 活动的 Asef 导致一个 conformational 变化。我们的结构因此阐明由 APC 的 Asef 识别的分子的机制,以及对癌症为药品的干预提供一个潜在的目标。 | Zhenyi Zhang Leyi Chen Lei Gao Kui Lin Liang Zhu Yang Lu Xiaoshan Shi Yuan Gao Jing Zhou Ping Xu Jian Zhang Geng Wu | 2012 | Cell Research2012，22，2： | 5 |
| 5 | Synthesis and optical characterization of Eu^(2+),Tb^(3+)-codoped Sr_3Y(PO_4)_3 green phosphors显示文摘A series of Eu^(2+),Tb^(3+)-codoped Sr_3 Y(PO_4)_3(SYP) green phosphors were synthesized by hightemperature solid-state reaction. Several techniques, such as X-ray diffraction, UV-vis spectrum,and photoluminescence spectrum, were used to investigate the obtained phosphors. The present study investigates in detail photoluminescence excitation and emission properties, energy transfer between the two dopants, and effects of doping ions on optical band gap. SYP:0.05 Eu2+ phosphor shows an intense and broad excitation band ranging from 220 to 400 nm and exhibits a bright green emission band with CIE chromaticity coordinates(0.189, 0.359) under 350 nm excitation. Green emission of SYP:0.03 Tb3+ is intensified by codoping with Eu^(2+), and energy transfer mechanism between them is demonstrated to be a dipole-dipole interaction. Upon 350 nm excitation, SYP:Eu^(2+),Tb^(3+) phosphors exhibits two dominating bands peaking at 466 and 545 nm, which are assigned to 4 f^65 d^1→4 f^7 transition of Eu^(2+) ions and ~5 D_4→~7 F_5 transition of Tb^(3+) ions, respectively. Optimal doping concentrations of Eu^(2+) and Tb^(3+) in the SYP host are 5 mol% and 15 mol%, respectively. Results indicate that SYP:Eu^(2+),Tb^(3+) phosphors are potentially used as green-emitting phosphors for white light-emitting diodes. | Anxiang Guan Zuizhi Lu Fangfang Gao Xiaoshan Zhang Huan Wang Tianjiao Huang Liya Zhou | 2018 | Journal of Rare Earths2018，36，3： | 4 |
| 6 | THE PROPER PARAMETRIZATION OF A SPECIAL CLASS OF RATIONAL PARAMETRIC EQUATIONS显示文摘我们为几乎合适为的一套合理参量的方程给一条合适的 reparametrization 定理它的参数之一。我们也给一个算法决定是否一套合理参量的方程属于这个班,并且如果它做, wereparametrize 它以便新参量的方程是合适的。 | Jia LI Xiaoshan GAO | 2006 | Journal of Systems Science & Complexity2006，19，3： | 3 |
| 7 | ON THE THEORY OF RESOLVENTS AND ITS APPLICATIONS显示文摘We extend the concept of the resolvent of a prime ideal to the concept of theresolvent of a general ideal with respect to a set of parameters and propose an algorithmto construct the generalized resolvents based on Wu-Rits’s zero decomposition algorithm.Our generalized algorithm has the following applications. (1) For a reducible variety V,we can find a direction on which V is projected birationally to an irreducible hypersurface.(2) We give a new algorithm to find a primitive element for a finite algebraic extensionof a field of characteristic zero. (3) We present a complete method of finding parametricequations for algebraic curves. (4) We give a method of solving a system of polynomialequations to any given precision. | GAO Xiaoshan(Institute of Systems Science, Academia Sinica,Beijing 100080, China)Shang-Ching Chou(Department of Computer Science, The Wichita State University, Wichita,KS 67208, USA) | 1999 | Systems Science and Mathematical Sciences1999，12，S1： | 3 |
| 8 | Orientation controlled preparation of nanoporous carbon nitride fibers and related composite for gas sensing under ambient conditions显示文摘在 suprastructures 创造毛孔二维(2D ) 材料当控制 2D 积木的取向在完成大特定的表面区域并且调节获得的功能的层次结构的各向异性的性质是重要的时。在这贡献,我们报导那安排 graphitic 碳氮化物( g-C3N4 ) nanosheets 进一个维( 1D )有控制取向的体系结构被使用面向的 melem 水合物纤维作为经由 polycondensation 的合成先锋处理的 1D 完成了,在哪个期间没有破坏面向的结构的 1D 形态学,水分子的移动和氨气体的版本导致了毛孔的创造。结果多孔的 g-C 3 有中央大小、微尺寸的毛孔和大部分暴露的边的 N 4 纤维展出了好察觉到向没有 2 的敏感和选择。察觉到的表演被多孔的纤维的杂交进一步与 Au nanoparticles (Au NP ) 改进,导致在周围的条件下面的 60 ppb 的察觉限制。我们的结果建议高度多孔的 g-C 3 有大部分暴露的 graphitic 层边的 N 4 纤维和相关混合结构是优秀的察觉到平台并且可以也在另外的电子、电气化学的应用显示出诺言。 | Suqin Li Zhiwei Wang Xiaoshan Wang Fangfang Sun Kai Gao Ningxian Hao Zhipeng Zhang Zhongyuan Ma Hai Li Xiao Huang Wei Huang | 2017 | Nano Research2017，10，5： | 2 |
| 9 | Geometric constraint solving with conics and linkages 显示文摘 | Gao XiaoShan Jiang Kun Zhu ChangCai | 2002 | Computer-Aided Design2002，34，6： | 1 |
| 10 | Geometric constraint satisfaction using optimization methods 显示文摘 | Ge Jianxin Chou Shangching Gao Xiaoshan | 1999 | Computer-Aided Design1999，31，14： | 1 |
| 11 | Generalized Stewart-gough platforms and their direct kinematics显示文摘 | Gao Xiaoshan Lei Deli Liao Qizheng | 2005 | IEEE Transactions on Robotics2005，21，2： | 1 |
| 12 | Rational quadratic approximation to real algebraic curves显示文摘 | Gao Xiaoshan Li Ming | 2004 | Com-puter Aided Geometric Design2004，21，： | 1 |
| 13 | A gr- eedy algorithm for feedrate planning of CNC machines along curved tool paths with confined jerk显示文摘 | ZHANG Ke YUAN Chunming GAO Xiaoshan | 2012 | Robotics and Comput- er-Integrated Manufacturing2012，28，4： | 1 |
| 14 | Automated production of traditional proofs for theorems in euclidean geometry 显示文摘 | Zhang Jinzhong Zhou Xianqing Gao Xiaoshan | 1995 | Annals of Mathematics and Artificial Intelligence1995，13，109： | 1 |
| 15 | A deductive data- base approach to automated geometry theorem proving and discove- ring显示文摘 | Zhou Xianqing Gao Xiaoshan Zhang Jinzhong | 2000 | Journal of Automated Reasoning2000，25，3： | 1 |
| 16 | Implicitization of rational parametric equations显示文摘 | GAO Xiaoshan CHOU S C | 1992 | Journal of Symbolic Computation1992，14，： | 1 |
| 17 | Generalized stewart platforms and their direct kinematics显示文摘 | Gao Xiaoshan | 2003 | Mathematics Mechanization Research Preprints2003，，22： | 1 |
| 18 | On the probability of the number of solutions for the P4P problem显示文摘 | Gao Xiaoshan Tang Jianliang | 2006 | Journal of Mathematical Imaging and Vision2006，25，1： | 1 |
| 19 | Quadratic approximation to plane parametric curves and its application in approximate implicitization显示文摘 | Li Ming Gao Xiaoshan Chou Shangching | 2006 | Visual Computer2006，22，9： | 1 |
| 20 | A deductive database approach to automated geometry theorem proving and discovering显示文摘 | Chou Shangching Gao Xiaoshan Zhang Jingzhong | 2000 | Journal of Automated Reasoning2000，25，： | 1 |
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