在奥地利的西部,有一座周围被冰雪山峰环绕,被称为"永远的绿色庭园"的小镇,著名陶艺作家 Thomas Bohle(中文名:司马陶)就出生在这个美丽的地方,今天,他带着他的原生陶艺作品首次来到了上海。就像是山岩上茵翠的青苔、水面上...在奥地利的西部,有一座周围被冰雪山峰环绕,被称为"永远的绿色庭园"的小镇,著名陶艺作家 Thomas Bohle(中文名:司马陶)就出生在这个美丽的地方,今天,他带着他的原生陶艺作品首次来到了上海。就像是山岩上茵翠的青苔、水面上飘浮的薄冰、白石上悬挂着的冰棱.那些滋润宁静的造型和充满质感的作品,将让人们体会到在静谧和宏大宇宙空间中所展现出的强大生命力。极致的造型和釉彩的完美融合。展开更多
This paper is devoted to the study of second-order Duffing equation with singularity at the origin, where? tends to positive infinity as , and the primitive function as . By applying the phase-plane analysis methods a...This paper is devoted to the study of second-order Duffing equation with singularity at the origin, where? tends to positive infinity as , and the primitive function as . By applying the phase-plane analysis methods and Poincaré-Bohl theorem, we obtain the existence of harmonic solutions of the given equation under a kind of nonresonance condition for the time map.展开更多
文摘在奥地利的西部,有一座周围被冰雪山峰环绕,被称为"永远的绿色庭园"的小镇,著名陶艺作家 Thomas Bohle(中文名:司马陶)就出生在这个美丽的地方,今天,他带着他的原生陶艺作品首次来到了上海。就像是山岩上茵翠的青苔、水面上飘浮的薄冰、白石上悬挂着的冰棱.那些滋润宁静的造型和充满质感的作品,将让人们体会到在静谧和宏大宇宙空间中所展现出的强大生命力。极致的造型和釉彩的完美融合。
文摘This paper is devoted to the study of second-order Duffing equation with singularity at the origin, where? tends to positive infinity as , and the primitive function as . By applying the phase-plane analysis methods and Poincaré-Bohl theorem, we obtain the existence of harmonic solutions of the given equation under a kind of nonresonance condition for the time map.
