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 284 for “"envelopes"”.
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Envelopes of broad band processes
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1981.
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A Systematic Study of Injective Envelopes
… particular regarding injectivity and injective envelopes. We also compare the purely categorical definition of injectivity with the `standard' operator theoretical definition.
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Molecular Line Studies of Circumstellar Envelopes
… problems in the study of the dusty, gaseous envelopes commonly found around highly evolved stars. Most of the objects observed are M or N giants and are typically long-period variables. We also observed some objects with hotter central stars which may be young or forming planetary nebulae.
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Evaluation of process systems operating envelopes
This thesis addresses the problem of worst-case steady-state design of process systems under uncertainty, also known as robust design. Designing for the worst case is of great importance when considering systems for deployment in extreme and hostile environments, where operational failures cannot …
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Mechanical systems / passive envelopes: integrative architectural approaches?
Two main approaches can be recognized regarding architecture and energy. On the one hand mechanical, energy intensive approach based on building services: complex networks of heating, ventilation and air conditioning that supply comfort conditions despite variable weather conditions. These are …
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Performance envelopes for preliminary sizing of aircraft structures
… concepts of characteristic loads and performance envelopes. The characteristic loads are a small set of linearly independent loads acting on the aircraft, identified using Singular Value Decomposition (SVD), which can represent all the load cases of interest. Performance envelopes are created …
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Sobre envelopes de retas intermediárias de curvas planas
Dada uma curva γ plana, fechada e convexa, e dois pontos distintos em tal curva, pode-se definir a reta média a qual passa pelo ponto médio do segmento ligando esses dois pontos e a intersecção das retas tangentes em cada um deles. Uma análise interessante, para tais retas, é investigar o …
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Urban envelopes : an architecture of adjacency and difference
… thickness and representation of envelopes suggest new types of textures and figures as well as a critical, infrastructural, role for architecture in the city. By establishing a link in the loops of operation at the scale of the wall, building type and block topology, this thesis …
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The Articulate Envelopes Of Renzo Piano And Kengo Kuma
This study defines building envelopes as articulate when they selectively conceal and reveal their constitution, allowing the representation or expression of something beyond their construction. It demonstrates how such envelopes can help situate buildings in place. The study is composed of two …
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A case-based reasoning approach to the designing of building envelopes
Building-envelope design is an information-intensive process that requires experiential knowledge. Confronted with such a process, a human expert adds to well-known domain knowledge his own experience, or the experience of others, to support his reasoning process and guide him in typical …
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Evolution of the Circumstellar Atomic and Molecular Envelopes Around Evolved Stars
… high resolution maps of their full molecular envelopes are presented. A variety of different nebular morphologies and kinematic structures were encountered. For the PPNe and PN, the neutral molecular envelopes are compared with images taken at optical, near-IR, and mid-IR wavelengths. These …
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Developing a simulation-based framework for healing building envelopes in healthcare design
In healthcare facilities, with the very nature of healing at its core, designing spaces with enhanced levels of human comfort is of prime importance. Daylighting in healthcare facilities has benefited the physiological and psychological well-being of patients receiving treatment. However, many …
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Experimental and ANSYS investigation on the aerogel envelopes for energy-efficient building
Energy consumption, specifically in the building sector is always increasing. One potential way to reduce energy consumption, is to reduce the heat loss in buildings or homes. Silica aerogels have grown in popularity as an insulating material due to their extremely low thermal conductivity. Very …
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Circumstellar Structure Properties of Young Stellar Objects: Envelopes, Bipolar Outflows, and Disks
… main structures in young stellar objects (YSOs), envelopes, bipolar outflows, and circumstellar disks, have been studied using radio interferometers: the Berkeley-Illinois-Maryland Association (BIMA) array and the Combined Array for Research in Millimeter-wave Astronomy (CARMA). (1) Envelopes: …
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Architectural Kinetics: A Study of Operable Mechanisms for Different Types of Envelopes
… have begun to change the concept of building envelopes. These changes have allowed envelopes to become lighter, less opaque, and more flexible; and as a result the architect has more freedom in exterior expression. In the Seagram Tower, for instance, while I-beams emphasize the vertical effect …
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Dynamic thermal behavior of adaptive envelopes with macroencapsulated PCMs: analysis and design methodology
Los edificios son responsables del 34% del consumo final de energía a nivel mundial y del 40% de las emisiones totales de CO₂, principalmente debido al consumo en calefacción y refrigeración. Una estrategia clave para reducir su impacto es mejorar las envolventes, ya que gobiernan el intercambio de …
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Characterisation of functional properties of Envelopes of highly neutralisation resistant HIV-1 isolates
An effective antibody-based HIV-1 vaccine would ideally elicit potent antibodies capable of neutralising a wide range of HIV-1 isolates to better cover the human population. A primary concern is the virus’ ability to rapidly escape an antibody response. A strong neutralising response elicited by a …
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