Controlled rocking of steel braced frames has been proposed for the seismic retrofit of structures. The controlled rocking approach allows a frame to uplift from its support at the base-of-column to foundation interface while displacementbased steel yielding devices are implemented at the base location to control the response. Past studies have focused on analytical investigations of the respon...

Because of difficulty in inspection and retrofit of foundation in comparison with other elements, the common design philosophy is to avoid any nonlinear deformation in the foundation. This paper shows that by employing controlled foundation nonlinearity, in predetermined sections with arrangements for inspection and retrofit, it is possible to reduce seismic demand on superstructure. Localizing...

Suction Bucket Jackets (SBJs) need to be fundamentally designed avoid rocking modes of vibration about the principal axes set foundations and engineered towards sway-bending tower vibration. Whether or not such type jackets exhibit depends on vertical stiffness caissons supporting them. This paper therefore derives closed form solutions for in three types ground profiles: linear, homogenous, pa...

(1998) Rocking chair therapy for dementia patients: Its effect on psychosocial well-being and balance

During the past years, cardiac resynchronization therapy (CRT) has become a recognized treatment option for patients with heart failure and conduction delays. In the meantime, the principle of re-synchronizing a dyssynchronous ventricle can be regarded as established. The challenge of correctly identifying the patient candidates who will benefit from this costly and not completely noninvasive t...

Clinical vignette: A 76-year-old man consults you for increasing shortness of breath over the past two years and an increasing requirement for home oxygen. A video-assisted thoracoscopic lung biopsy shows findings of usual interstitial pneumonitis, and he has no identifiable cause for pulmonary fibrosis, so he is considered to have idiopathic pulmonary fibrosis (IPF). His diffusing capacity for...

The seismic response assessment of rocking systems via Incremental Dynamic Analysis (IDA) is investigated, focusing on the issues that arise in analysis and postprocessing stages. Rocking IDA curves generally differ from those hysteretic structural due to (i) frequent appearance resurrections; (ii) their highly weaving non-monotonic behavior; (iii) overall high variability. Hence, including or ...