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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

Extracting Surface Structural Information from Vibrational Spectra with Linear Programming

Hung, Kuo Kai 21 August 2015 (has links)
Vibrational spectra techniques such as IR, Raman and SFG all carry molecular orientation information. Extracting the orientation information from the vibrational spectra often involves creating model spectra with known orientation details to match the experimental spectra. The running time for the exhaustive approach is O(n!). With the help of linear programming, the running time is pseudo O(n). The linear programming approach is with out a doubt far more superior than exhaustive approach in terms of running time. We verify the accuracy of the answer of the linear programming approach by creating mock experimental data with known molecular orientation distribution information of alanine, isoleucine, methionine, lysine, valine and threonine. Linear programming returns the correct orientation distribution information when the mock experimental spectrum consisted of different amino acids. As soon as the mock experimental spectrum consisted of same amino acids, different conformer with different orientation distribution, linear programming fails to give the correct answer albeit the species population is roughly correct. / Graduate

Open Vehicle Routing Problem : description, formulations and heuristic methods

Sariklis, Dimitrios January 1997 (has links)
No description available.

Geochemistry of metalliferous sediments from the northern Oman ophiolite

Wilson, Robin A. January 1997 (has links)
A range of siliceous, ferruginous and ferromanganiferous deposits are intercalated with, and overlie the lavas of the Late Cretaceous northern Oman ophiolite. Most of the deposits lie on the upper surface of the spreading event lavas; spreading event magmatism and later seamount-building events are coeval to relatively small metalliferous sediment deposits. The mineralogical and geochemical characteristics of these sediments are a function of the interaction between local hydrothermal systems, the marine depositional environment, and early diagenetic transformations. Various techniques are employed to objectively determine the actual end-member component compositions from which the metalliferous sediments formed. The sediments are a mixture of primary biosiliceous oozes and hydrothermal metallic components which were deposited at or near a marginal ocean-basin spreading axis during Cenomanian time. Factor analysis, selective acid leaching experiments and linear programming modelling identify six geologically reasonable end-members, which represent biosiliceous sediment, carbonate sediment, detrital sediment, hydrogenous sediment, and hydrothermal sediment. The techniques show that the sediments have a complicated hydrothermal history which is associated with the evolution of the Oman ophiolite. The hydrothermal component is sub-divided into high temperature and low temperature end-members which are characteristic of the proto-seamount and proto- rift event environments respectively. Vent proximal and vent-distal facies are described. The geochemistry of the deposits provides evidence for calcareous pelagic dissolution by hydrothermal fluids, which resulted in the relative concentration of a hyaloclastic component. The deposits which were not early-lithified are epidotized. Metamorphic transformation of the primary sediment occurred prior to eruption of the upper lava unit. The techniques which have been used to describe the range, composition and distribution of the end-member components provide a flexible framework for the characterisation of geological mixing in all marine metalliferous sediments.

Multiple Choice Integer Programming with few constraints

Kayal, N. M. W. January 1984 (has links)
No description available.

Model generation and sampling algorithms for dynamic stochastic programming

Poire, Xavier Corvera January 1996 (has links)
No description available.

Reprocessing and model analysis for linear and integer programming models

Amhemad, Abdella Zidan January 1997 (has links)
No description available.

Decision modelling and information systems : the interaction of information and decision technologies

Koutsoukis, Nikitas-Spiros January 1998 (has links)
No description available.

Investigation and development of efficient integer and integer goal programming systems

Mirrazavi, Seyed Keyvan January 1997 (has links)
No description available.

The weighted maximal planar graph : mathematical formulations and solutions

Abdullah, Ali H. January 2002 (has links)
No description available.

A linear programming model for the analysis of traffic in a highway network

Heanue, Kevin Edward 12 1900 (has links)
No description available.

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