Automorphisms of Maps with a Given Underlying Graph and Their Application to Enumeration Lin Fan MAO Yan Pei 1IU Feng TIAN A graph is called a semi-regular graph if its automorphism group action on its ordered pair of...Automorphisms of Maps with a Given Underlying Graph and Their Application to Enumeration Lin Fan MAO Yan Pei 1IU Feng TIAN A graph is called a semi-regular graph if its automorphism group action on its ordered pair of adjacent vertices is semi-regular. In this paper, a necessary and sufficient condition for an automorphism of the graph T to be an automorphism of a map with the underlying graph Γis obtained. Using this result, all orientation-preserving automorphisms of maps on展开更多
An Equivariant Version of the K-energy Gang TIAN Abstract In this note, we present a connection between equivariant Bott-Chern classes and Kahler-Ricci solitons. We also propose a generalized version the of the K-ener...An Equivariant Version of the K-energy Gang TIAN Abstract In this note, we present a connection between equivariant Bott-Chern classes and Kahler-Ricci solitons. We also propose a generalized version the of the K-energy. A Class Of Counterexamples Concerning an Open Problem Pei Xin CHEN Shi Jie LU Abstract Kenneth R. Davidson raised ten open problems in the book Nest Algebras. One of these open problems is Problem 7 If K, (∩) Alg(?) is weak dense in Alg(?), where k is the set of all compact展开更多
On the Quaternion Ball and the Quaternion Projective Space Qi Keng LU Abstract A Since the quaternion ball was used to study the AdS/CFT problems for spinor fields, it is worthwhile to study further the geometry (in s...On the Quaternion Ball and the Quaternion Projective Space Qi Keng LU Abstract A Since the quaternion ball was used to study the AdS/CFT problems for spinor fields, it is worthwhile to study further the geometry (in sense of Klein) and analysis on it and on its extended space (in the sense of Behnke-Thullen), the quaternion projective space.展开更多
Cooperative Reconfiguration for a Reconfigurable Mobile Robot LIU Tonglin, WU Chengdong, LI Bin, LIU Jinguo （1. State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, She...Cooperative Reconfiguration for a Reconfigurable Mobile Robot LIU Tonglin, WU Chengdong, LI Bin, LIU Jinguo （1. State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China; 2. Graduate School, Chinese Academy of Sciences, Beijing 100049, China; 3. School of Information Science ＆ Engineering, Northeast University, Shenyang 110004, China）Abstract： A main characteristic of the reconfigurable mobile robot AMOEBA-1 is that it has diverse configurations, but some reconfigurations are difficult to realize under the influence of ground conditions. A cooperative reconfiguration method is proposed to reduce reconfiguration resistance and enhance the adaptability of the robot to the environment. The mathematical model is established correspondingly. The kinematics and mechanical properties of each section of the robot are analyzed. A part of resistance is transformed into active force of reconfiguration, and transforms are actualized among five specific configurations. Further, the linearization of model based on a perturbation analysis method is used to reduce the computational complexity. Finally, an evaluation criterion is proposed for AMOEBA-I＇s cooperative reconfiguration performance. The validity of the cooperative reconfiguration method is proved by simulations and experiments.展开更多
目的 探讨达格列净治疗糖尿病肾病合并高尿酸血症的疗效及对患者血尿酸水平的影响。方法 选取2020年6月~2021年12月收治的40例糖尿病肾病合并高尿酸血症患者,随机数字表法分为试验组(常规治疗+达格列净,20例)和对照组(常规治疗,20例)。...目的 探讨达格列净治疗糖尿病肾病合并高尿酸血症的疗效及对患者血尿酸水平的影响。方法 选取2020年6月~2021年12月收治的40例糖尿病肾病合并高尿酸血症患者,随机数字表法分为试验组(常规治疗+达格列净,20例)和对照组(常规治疗,20例)。干预前后,测定两组血糖指标[空腹血糖(FPG)、餐后2 h血糖(2 h PG)、糖化血红蛋白(HbA1c)]与肾功能指标[血肌酐(Scr)、尿素氮(BUN)、24 h尿蛋白定量(24 h UTP)],评价两组临床疗效;测定两组血尿酸(SUA)与24 h尿尿酸(24 h UUA),计算尿酸排泄率(UEua),评价两组尿酸水平变化。结果 治疗后,试验组血糖指标FPG、2 h PG、HbA1c与治疗总有效率与对照组比较,差异无统计学意义(P> 0.05)。治疗后,试验组Scr、BUN与24 h UTP低于对照组,SUA与24 h UUA低于对照组,UEua高于对照组,差异均有统计学意义(P <0.05)。结论 在常规治疗基础上加用达格列净治疗糖尿病肾病合并高尿酸血症,可以更好改善患者肾功能,提高患者尿酸排泄率,降低患者血尿酸水平。展开更多
文摘Automorphisms of Maps with a Given Underlying Graph and Their Application to Enumeration Lin Fan MAO Yan Pei 1IU Feng TIAN A graph is called a semi-regular graph if its automorphism group action on its ordered pair of adjacent vertices is semi-regular. In this paper, a necessary and sufficient condition for an automorphism of the graph T to be an automorphism of a map with the underlying graph Γis obtained. Using this result, all orientation-preserving automorphisms of maps on
文摘An Equivariant Version of the K-energy Gang TIAN Abstract In this note, we present a connection between equivariant Bott-Chern classes and Kahler-Ricci solitons. We also propose a generalized version the of the K-energy. A Class Of Counterexamples Concerning an Open Problem Pei Xin CHEN Shi Jie LU Abstract Kenneth R. Davidson raised ten open problems in the book Nest Algebras. One of these open problems is Problem 7 If K, (∩) Alg(?) is weak dense in Alg(?), where k is the set of all compact
文摘On the Quaternion Ball and the Quaternion Projective Space Qi Keng LU Abstract A Since the quaternion ball was used to study the AdS/CFT problems for spinor fields, it is worthwhile to study further the geometry (in sense of Klein) and analysis on it and on its extended space (in the sense of Behnke-Thullen), the quaternion projective space.
文摘Cooperative Reconfiguration for a Reconfigurable Mobile Robot LIU Tonglin, WU Chengdong, LI Bin, LIU Jinguo （1. State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China; 2. Graduate School, Chinese Academy of Sciences, Beijing 100049, China; 3. School of Information Science ＆ Engineering, Northeast University, Shenyang 110004, China）Abstract： A main characteristic of the reconfigurable mobile robot AMOEBA-1 is that it has diverse configurations, but some reconfigurations are difficult to realize under the influence of ground conditions. A cooperative reconfiguration method is proposed to reduce reconfiguration resistance and enhance the adaptability of the robot to the environment. The mathematical model is established correspondingly. The kinematics and mechanical properties of each section of the robot are analyzed. A part of resistance is transformed into active force of reconfiguration, and transforms are actualized among five specific configurations. Further, the linearization of model based on a perturbation analysis method is used to reduce the computational complexity. Finally, an evaluation criterion is proposed for AMOEBA-I＇s cooperative reconfiguration performance. The validity of the cooperative reconfiguration method is proved by simulations and experiments.
文摘目的 探讨达格列净治疗糖尿病肾病合并高尿酸血症的疗效及对患者血尿酸水平的影响。方法 选取2020年6月~2021年12月收治的40例糖尿病肾病合并高尿酸血症患者,随机数字表法分为试验组(常规治疗+达格列净,20例)和对照组(常规治疗,20例)。干预前后,测定两组血糖指标[空腹血糖(FPG)、餐后2 h血糖(2 h PG)、糖化血红蛋白(HbA1c)]与肾功能指标[血肌酐(Scr)、尿素氮(BUN)、24 h尿蛋白定量(24 h UTP)],评价两组临床疗效;测定两组血尿酸(SUA)与24 h尿尿酸(24 h UUA),计算尿酸排泄率(UEua),评价两组尿酸水平变化。结果 治疗后,试验组血糖指标FPG、2 h PG、HbA1c与治疗总有效率与对照组比较,差异无统计学意义(P> 0.05)。治疗后,试验组Scr、BUN与24 h UTP低于对照组,SUA与24 h UUA低于对照组,UEua高于对照组,差异均有统计学意义(P <0.05)。结论 在常规治疗基础上加用达格列净治疗糖尿病肾病合并高尿酸血症,可以更好改善患者肾功能,提高患者尿酸排泄率,降低患者血尿酸水平。
