Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 94 for “"Atrium"”.
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Atrium defines form
The natural environment is deteriorating and electricity demand is outstripping supply partly due to our growing built environment and economy. In response there is a need for energy efficient office space to accommodate economic growth and help with the conservation of the environment. The inner …
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Atrium House solar revitalization
The idea behind the Atrium House Solar Revitalization project, may be briefly presented as: energy conserving, low rise, high density, related- to- the-sky residences. The proposed system consists of a reticulate grid - each case representing a house - with accesses at the bottom, and terraces and …
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The living atrium : design guidelines for quality atriums
… and technical foundation for a good atrium design in order to provide a suitable environment for the coexistence of people and plants in relation to comfort, health, climate, technique, aesthetics, and energy consumption. The scientific purpose is to establish new design criteria and …
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Modeling of opening characteristics of an atrium in natural ventilation
Atriums are widely applied in non-residential buildings to provide social contact, daylight, air circulation, and aesthetic requirements. Buoyancy-driven ventilation systems are common because they can maintain suitable thermal comfort and reduce energy. Modeling techniques used to simulate …
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Development of a procedure for predicting daylighting in square type atrium
… in greater depth to exploit the potential of the atrium in the use of daylight for energy conservation. Present methods for calculating daylight distribution in conventionally designed buildings are not presently configured to deal with atria. This study takes advantage of scale model simulation …
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CyberCardia: Patient-specific electrophysiological heart model for assisting left atrium arrhythmia ablation
… procedure, catheters are inserted into the left atrium to map the atrium geometry and record endocardium electrograms that are then converted into electroanatomical maps to pinpoint the arrhythmia source locations. However, identifying these sources is challenging. The electrograms are …
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Excitation-Contraction Coupling: Analysis of Calcium Storage Sites in Guinea Pig Atrium
Made available in DSpace on 2014-12-11T22:22:22Z (GMT). No. of bitstreams: 1 7412017.pdf: 5610525 bytes, checksum: 3da4363a2a281c4a6f8070782e9412d0 (MD5) Previous issue date: 1973
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The effect of plants on human perceptions and behavior within an interior atrium
… area of a newly constructed interior atrium would affect user perceptions of, and/or behaviors in the space. User perceptions of and activities within the atrium were recorded on questionnaires and behavioral maps, both before and after the installation of Ficus trees and Chinese …
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The electrophysiological and molecular effects of chronic beta-adrenoceptor antagonist therapy on human atrium
The chronic treatment of patients with a β-adrenoceptor antagonist is associated with prolongation of the atrial cell action potential duration (APD), potentially contributing to the ability of these drugs to prevent atrial fibrillation (AF). The mechanisms underlying this APD prolongation are not …
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The effect of atrium configurations on energy usage in high-rise office buildings in semi-arid climate of Tehran
… & Wood, 2013). As a passive design element, an atrium has the potential to naturally provide heating and cooling, as well as adequate daylight, in arid and temperate climates. Moreover, a naturally ventilated atrium has also proven to be a useful environmental feature in tall building design …
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Segmentation and visualization for cardiac ablation procedures
… method for the automatic delineation of the left atrium in magnetic resonance (MR) images acquired during the procedure. The high anatomical variability of the left atrium shape and of the pulmonary veins that drain into it presents significant difficulties for cardiac ablation. Consequently, …
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Activation in Mammalian Heart Muscle: Effects of Calcium Modulators and Pattern of Stimulation on Action Potential Configuration and Contraction in Guinea Pig Atrium
Made available in DSpace on 2014-12-14T05:40:40Z (GMT). No. of bitstreams: 1 7606928.pdf: 5321702 bytes, checksum: 1c74ab215aa97086c956220aa24dffd6 (MD5) Previous issue date: 1975
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Creating intentional environments for impromptu collaboration: Designing forms with affordances to support engagement and collaboration in the atrium of a higher education facility
… designed as part of the re-imagination of the atrium of Beckman Institute for Advanced Science and Technology, on the University of Illinois Urbana-Champaign campus. This re-imagination project began as an interdisciplinary exploration of concepts to refresh the facility’s vast atrium space. …
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Central Venous Pressure Reference Points Measured on Post-Mortem Subject
… of these two reference points to the mid right atrium. Probes were placed in the chest wall at the two reference sites and carefully extended through to the heart. Direct measurements were then taken to determine the distance of the probes from the mid right atrium.</p> <p>Results of this study …
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Automatic segmentation of wall structures from cardiac images
… ventricles from CT images and extract the left atrium from MR images. As applications, the segmentation results are used to facilitate cardiac disease analysis. Specifically, 1. An automatic method is proposed to extract the ventricles from CT images by integrating surface decomposition with …
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Hub and Axis
… the building is in concentric rings around the atrium in both space and materials. As materials were brought into the building, they enhanced the strong axial configuration and emphasized the layers surrounding the central hub space of the atrium. There are two pairs of axes in the building. The …
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An Exploration of the Natural Ventilation Strategies At the World Trade Center, Amsterdam
… of five towers with connecting multi-storied atriums in the interstitial spaces. While the towers are actively heated and cooled using modern energy efficient systems the atrium areas are ventilated using an innovative passive system. This passive system relies on turbulence and negative …
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Study of natural ventilation design by integrating the multi-zone model with CFD simulation
… buildings should be carefully studied: the atrium and large openings between the zones. A criterion has been set up for dividing the large opening and the connected atrium space into at least two sub-openings and sub-zones. The results of the MultiVent calculation can provide boundary …
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Calculation of smoke ventilation in building fires including atriums
… Nowadays, the design of novel types of atrium in new buildings is very popular, thus the aim of the current research work is to evaluate methodologies that define guidelines as to the design of smoke ventilation systems in such large spaces. The research work consisted of a survey …
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