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浏览/检索结果: 共7条，第1-7条 帮助 限定条件 专题：北京大学    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 The Complexity of Generalized Center Problem 其他 2015-01-01 Dong, Guangfeng; Liu, Changjian; Yang, Jiazhong 收藏  |  浏览/下载：2/0  |  提交时间：2015/11/11 Polynomial differential systems  p : -q Resonance  Saddle value  Saddle order  Generalized center  RESONANT CENTER PROBLEM  LOTKA-VOLTERRA SYSTEMS  POLYNOMIAL VECTOR-FIELDS  SINGULAR POINT  INTEGRABILITY  LINEARIZABILITY  NONLINEARITIES   Analytic Structure of the SCFT Energy Functional of Multicomponent Block Copolymers 其他 2015-01-01 Jiang, Kai; Xu, Weiquan; Zhang, Pingwen 收藏  |  浏览/下载：110/0  |  提交时间：2017/12/03 Multicomponent block copolymers  saddle point approximation  SCFT energy functional  gradient-based iterative methods  ABC star triblock copolymers  CONSISTENT-FIELD THEORY  TRIBLOCK COPOLYMERS  GAUSSIAN INTEGRALS  DIBLOCK COPOLYMERS  ASYMPTOTIC ANALYSIS  ORDERED PHASES  MINIMUM POINTS  MELTS  STABILITY  POLYMERS   Convergence and Optimality of the Adaptive Nonconforming Linear Element Method for the Stokes Problem 其他 2013-01-01 Hu, Jun; Xu, Jinchao 收藏  |  浏览/下载：5/0  |  提交时间：2015/11/10 Adaptive finite element method  Convergence  Optimality  The Stokes problem  POSTERIORI ERROR CONTROL  OPTIMAL COMPLEXITY  UNIFYING THEORY  ESTIMATORS  EQUATIONS  RATES  FEM   Direct manipulation of free-form deformation using curve-pairs 期刊论文 computer aided design, 2013 Xu, Gang; Hui, Kin-chuen; Ge, Wen-bing; Wang, Guo-zhao 收藏  |  浏览/下载：2/0  |  提交时间：2015/11/11 Geometric modeling  Curve-pair based deformation  Direct manipulation  Constrained optimization  Detail-preserving direct manipulation  SADDLE-POINT PROBLEMS  SPACE DEFORMATION  NURBS CURVE  SURFACES  MESHES  CONSTRAINTS/  CONVERGENCE  PROJECTION   NEW NUMERICAL TECHNIQUES FOR A THREE-DIMENSIONAL LIQUID-FEED DIRECT METHANOL FUEL CELL MODEL 其他 2009-01-01 Sun, Pengtao; Xue, Guangri; Wang, Chaoyang; Xu, Jinchao 收藏  |  浏览/下载：7/0  |  提交时间：2015/11/16 direct methanol fuel cell (DMFC)  two-phase transport model  combined finite element-upwind finite volume  Newton&apos  convection-dominated diffusion problem  NAVIER-STOKES EQUATIONS  SADDLE-POINT PROBLEMS  INCOMPRESSIBLE-FLOW  PRECONDITIONERS  TRANSPORT  CATHODE  s linearization   Critical groups at infinity, saddle point reduction and elliptic resonant problems 其他 2003-01-01 Liu, SB; Li, SJ 收藏  |  浏览/下载：2/0  |  提交时间：2015/11/13 morse inequality  critical group  Lyapunov-Schmidt reduction  elliptic resonant problem  ASYMPTOTICALLY QUADRATIC FUNCTIONALS  MULTIPLE SOLUTIONS  EQUATIONS   Remarks on 16th weak Hilbert problem for n=2 其他 2002-01-01 Li, CZ; Zhang, ZH 收藏  |  浏览/下载：1/0  |  提交时间：2015/11/13 QUADRATIC HAMILTONIAN-SYSTEMS  LIMIT-CYCLES  PERIOD ANNULUS  SADDLE-LOOP  PERTURBATIONS  CYCLICITY  NUMBER