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 16969 for “"Density"”.
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Density-to-Potential Inversions in Density Functional Theory
Density functional theory and many of its extensions are formally exact quantum many-body theories. In practice, however, implementations of these theories use approximations for all but the most trivial systems. We present a set of inversion methods to numerically compute the exact potentials …
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Density Reconsidered
The work seeks to reconsider aspects of high density in urban architecture, exemplified in a site in Hong Kong, where currently urban housing, temple, commercial, office and other structures coexist. While a very high density of urban housing is in place, it does not consider qualities of living …
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Shaping density : how can high density form yield good urban places?
… This lays the foundations for a very high-density urban development of approximately 130-140 dwellings per hectare. However, the actual numbers depend on a variety of inconsistent forces, such as the changing socio-political and economic climate and how these will modify the existing site. …
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Effect of strong density gradients on density waves in spiral galaxies
Thesis. 1976. M.S.--Massachusetts Institute of Technology. Dept. of Earth and Planetary Sciences.
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Spontaneous lipid transfers between low density lipoproteins and reconstituted high density lipoproteins
… important components in the metabolism of low density lipoprotein (LDL) and high density lipoprotein (HDL). Cholesterol spontaneously transfers from LDL to HDL; phospholipid transfer proceeds in the reverse direction. Reconstituted HDL (rHDL) particles were employed in this study. Cholesterol …
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Theory of density functionals
<p>Density functional theory is an alternative quantum mechanical theory that offers simple ways of performing calculations of the electronic properties of matter. Many different methods derive from density functional theory. The most appealing for its simplicity and rigor is the theory of Kohn and …
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Partition density functional theory
<p>Partition density functional theory (PDFT) is a method for dividing a molecular electronic structure calculation into fragment calculations. The molecular density and energy corresponding to Kohn Sham density-functional theory (KS-DFT) may be exactly recovered from these fragments. Each fragment …
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Density Based Data Clustering
… in-depth study on data clustering with focus on density-based clustering methods. The latest density-based (CFSFDP) algorithm is based on the idea that cluster centers are characterized by a higher density than their neighbors and by a relatively larger distance from points with higher densities. …
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Manifold aligned density estimation
… thesis is mainly concerned with manifold aligned density estimation problems. In particular, the work presented in this thesis includes efficiently learning the density distribution on very large-scale datasets and estimating the manifold aligned density through explicit manifold modeling. First, …
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High density urban environment.
Massachusetts Institute of Technology. Dept. of Architecture. Thesis. 1967. M.Arch.
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A high density environment.
Massachusetts Institute of Technology. Dept. of Architecture. Thesis. 1968. M.Arch.
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High Density Residential Design
Massive migration is one the most significant phenomena of China's urbanization. In the thirty years since the "Reform and Open Up" policy began, Guangzhou has experienced economic growth and urban expansion and attracted a vast number of migrants. Seen as the product of the rapid urbanization, …
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Density Model Corrections Derived from Orbit Data to Characterize Upper Atmospheric Density Variations
One goal of this research is to estimate density model corrections using readily available Satellite Laser Ranging (SLR) data, and to demonstrate this approach's validity for additional satellites with similar data sets in the future. The research also aims to utilize previously unused or little …
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Evaluation of the electrical density gauge for in-situ moisture and density determination
… The optimum moisture content and maximum dry density for a particular soil is determined by means of Proctor tests in the laboratory. A relative compaction index is then used to correlate the laboratory values with the field compaction values obtained using in-situ tests. The Sand Cone (SC) …
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Mixing Mechanisms in Density Intrusions
In addition to gravity current front dynamics, another mixing behavior has been studied (sedimentary double diffusion, SDD). Laboratory experiments have been performed which explore conditions the only previous study did not. The experimental data obtained herein has been combined with the data …
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Increasing carbon nanotube forest density
… thus this research seeks to increase the areal density of VACNTs, as areal density also scales with surface area. VACNT synthesis requires the preparation of a substrate with (typically iron) catalyst nanoparticles (NPs), which become nucleation sites for CNTs. This research was primarily …
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Low density parity check codes
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering, 1960.
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