全部来源 求助全文 dol.govt.nz 相似文献From insecure to secure employment: changes in work, health, health related behaviours, and sickness absence Aims: To determine whether change in employment status (from fixed term to permanent employment) is followed by changes in work, health, health ...
We will call them planar triangulations, for short, and when we use the term triangulation , it will be implicitly assumed that the triangulation is connected. Planar triangulations have another important property: their embedding in the sphere t is topologically unique (or unique up to reflection...