abstract for seismic design, it is important to estimate the, maximum lateral displacement (inelastic displacement) of the structures due to earthquakes for several reasons. seismic design provisions estimate the maximum roof and storey drifts occurring in major earthquakes by amplifying the roof displacement and drifts of the structures obtained by elastic analysis subjected to seismic design ...

Incorporating User Design Preferences into Multi-Objective Roof Truss Optimization. (May 2006) Breanna Michelle Weir Bailey, B.S., Texas A&M University; M.S., University of Illinois Urbana-Champaign Chair of Advisory Committee: Dr. Anne Raich Automated systems for large-span roof truss optimization provide engineers with the flexibility to consider multiple alternatives during conceptual design...

daylight in classrooms is a critical factor in school design, in terms of its impact on students’ health, learning and visual performance. providing adequate amount of evenly distributed daylight and glare prevention are important challenges in classroom design. window configuration significantly affects the intensity and uniformity of daylight. this paper aims to investigate the effect of wind...

The case of a 19-year-old female with a neonatal diagnosis of Tetralogy of Fallot and complete atrioventricular (AV) septal defect is described. She had had a corrective surgery at the age of 6. She did well afterwards despite recent complain of fatigability with mild arterial hypoxaemia. Transoesophageal echocardiography depicted a 12 mm atrial septal defect (ASD) with a bidirectional shunt, w...

characteristics of efficient roof shape is a part of configuration of efficient architecture which seems to be an ideal in contemporary architecture especially in contemporary architecture of developing countries such as iran. this study is to investigate two roof shapes in view of air flow and indoor-temperature to find efficient roofs shapes for residential buildings in tehran. computational ...

conclusions a right atrium myxoma in a patient with a history of multiple soft tissue tumors has been limited to only a few cases. this may suggest a genomic affinity or similarity; if so, those with multiple different type soft tissue masses should be screened for a heart mass before the mass becomes complicated. introduction heart secondary tumors are much more common than primary tumors. the...

BACKGROUND Cardiac myxoma is the most common primary cardiac tumor. AIM To evaluate clinical aspects, diagnostic methods and surgical outcomes in patients with cardiac myxoma. PATIENTS AND METHODS AH patients who underwent surgical resection of a cardiac myxoma between January 1973 and December 2004 at our institution, were identified and their medical records and diagnostic data reviewed. ...

Radiofrequency catheter ablation is currently used widely and successfully to treat a variety of arrhythmias, and ablation for atrial fibrillation represents the frontier of arrhythmia research. Development in many areas will offer to the electrophysiologic community a more rational and effective background upon which select patients for ablation and identify the optimal ablative strategy. Amon...

The aim of the study was to develop a three-dimensional (3D) anatomically-detailed model of the rabbit right atrium containing the sinoatrial and atrioventricular nodes to study the electrophysiology of the nodes. A model was generated based on 3D images of a rabbit heart (atria and part of ventricles), obtained using high-resolution magnetic resonance imaging. Segmentation was carried out semi...

The concomitant presence of abnormal connection from three aortic valsalva sinuses to cardiac chambers is a rare complication of native aortic Brucella endocarditis. This case report presents a 37-year-old Iranian female patient who had native aortic valve Brucella endocarditis complicated by periannular abscess formation and subsequent perforation to multi-cardiac chambers associated with cong...