博士：2007，基础数学，河北师范大学；

     硕士：2003，基础数学，河北师范大学；

     学士：1986，基础数学，河北师范学院.

教学情况：

     主讲课程： 线性代数,  高等数学, 近世代数

科研情况：

      代表性论文：

     1. L. Yuan, Qingde Kang，Decomposition of lambda K_v into　five graphs  with six   vertices and eight edges，Acta Mathematicae Applicate Sinica, English Series, Vol. 28, No.4 (2012) 823-832.

     2. L. Yuan, Qingde Kang，On overlarge sets of  Kirkman triple systems，Discrete Mathematics 310(2010) 2119-2125.

     3. Landang Yuan, Qingde Kang，Further results on overlarge sets of  Kirkman triple systems，Acta Mathematica Sinica, English Series, Mar., 2009,Vol. 25, No.3,pp.419-434.

     4. L. Yuan and Q. Kang,  Some infinite families of large sets of  Kirkman triple systems，

     J. Combin Design 16: 202-212, 2008.

     5. L. Yuan and Q. Kang,  A tripling construction for overlarge sets of KTS, Discrete  Mathematics, 309(2008), 975-981.

    6. L. Yuan and Q. Kang, Another construction for large sets of Kirkman triple systems,   Designs, Codes and Cryptography, 48(2008), 35-42.