SPIRAL GROWTH: THE ‘MUSEUM OF ALL SHELLS’ REVISITED

Buckling of Spherical Shells Revisited

A study is presented of the post-buckling behavior and imperfection-sensitivity of complete spherical shells subject to uniform external pressure. The study builds on and extends the major contribution to spherical shell buckling by W.T. Koiter in the 1960’s. Numerical results are presented for the axisymmetric large deflection behavior of perfect spheres followed by an extensive analysis of th...

Contribution to Artforum series : The Museum Revisited

an investigation about the relationship between insurance lines and economic growth; the case study of iran

مطالعات قبلی بازار بیمه را به صورت کلی در نظر می گرفتند اما در این مطالعه صنعت بیمه به عنوان متغیر مستفل به بیمه های زندگی و غیر زندگی شکسته شده و هم چنین بیمه های زندگی به رشته های مختلف بیمه ای که در بازار بیمه ایران سهم قابل توجهی دارند تقسیم میشود. با استفاده از روشهای اقتصاد سنجی داده های برای دوره های 48-89 از مراکز ملی داده جمع آوری شد سپس با تخمین مدل خود بازگشتی برداری همراه با تعدادی ...

Shells With Integrated RadiaL and Spiral (SWIRLS): An improved shells k-space trajectory

Introduction The shells trajectory is a 3D non-Cartesian trajectory that samples k-space data on the surfaces of a series of concentric spheres. It has been shown to have many favorable properties such as efficient k-space coverage, variable sampling density, motion correction, spherical center-out ordering, and maximal speed for acquiring the center of a 3D k-space (1,2). The implementation of...

Dogmatism, Pragmatism, Essentialism, Relativism: The Boas/Mason Museum Debate Revisited