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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.
1

The utilization of essential minerals by preadolescent girls consuming three levels of protein

Raghavan, Andal V. January 1974 (has links)
The effect of three levels of protein on the utilization of magnesium, calcium, manganese, iron, copper, zinc, sodium and potassium was studied in preadolescent girls. Minerals were determined in excreta and food following a wet ash by absorption spectrophotometric procedures. The minerals magnesium, calcium and manganese were better utilized with low protein intakes. The utilization of copper, zinc, and sodium were enhanced on moderate protein intakes. A high protein diet was detrimental to the utilization of these minerals when present in low levels but enhanced the utilization of copper, and did not affect sodium utilization adversely. The effect of protein on iron absorption was not clear. Protein level did not affect the potassium utilization. / Master of Science
2

Alternative methods of determining the orientation of a stellar camera

Rae, Scott M. January 1987 (has links)
Stellar photography has found use in the calibration of mapping cameras and in determining the orientation of the stellar cameras serving as attitude sensors, e.g. the lunar mapping cameras on the NASA Apollo 15, 16, and 17 missions. The equations used to relate the image measurements to the attitude of the camera are the collinearity equations of photogrammetry. These require initial approximations to the unknown attitude angles and the use of an iterative Gaussian correction algorithm. Simpler methods are described which do not require initial approximations to the unknown angles. Two of the methods are modifications of the Church method of space resection and the third is based on the mathematical formulation of a rotation transformation about a single axis. The methods require only two images for a solution. Modifications are given for using the methods with aerial and terrestrial photographs when the camera position is known and two or more control points are imaged on a photograph. / Master of Engineering
3

A method of generation scheduling in electric utility systems with nuclear units

Rahman, Saifur 07 April 2010 (has links)
The problem of unit commitment in an electric utility system is analyzed. The types of generating units considered include nuclear-steam, fossil-steam, thermalpeaking, conventional and pumped-storage hydro. The large problem of generating unit commitment, due to the inclusion of the nuclear unit, is decomposed into two stages. In the first stage, the relatively stable nuclear generation is optimized with respect to the generation from the large fossil-steam unit. Hourly generation levels for all the units in the system are determined in the second stage. AS a result of considering the startup-shutdown cost, the objective function has a fixed charge component in addition to first and second degree polynomials. Representation of the minimum turndown level and minimum Shutdown duration of the generator necessitates the use of O-1 variables along with continuous variables. The solution methodology presented here, applying an extension of the Lambda-Separable Programming, can handle these requirements efficiently. Application of the algorithm results in a minimum-cost generation schedule for all units in the system. Optimum generation levels of energy limited units are determined without using a preselected unit commitment order. The effect of startup-shutdown costs on the number of hours a Plant should operate is established. The cost and benefit of spent nuclear fuel reprocessing is analyzed and the effect of uranium prices on it (reprocessing) is shown. The model is tested using a sample system of six generating units. Hourly generation schedules, includig purchase and sale, are determined for two one-week periods while the nuclear generation is optimized for an entire year. / Ph. D.
4

Determinanty cen nového rezidenčního developmentu v Praze / Determinants of Residential Development Prices in Prague

Mazáček, David January 2015 (has links)
III Title: Determinants of Residential Development Prices in Prague Author: David Mazáček Department: Institute of economic studies Diploma Theises Supervisor: PhDr. Pavel Streblov, MSc. Supervisor's e-mail address: streblov@pentainvestmens.cz Abstract: This thesis analyzes the progression and current situation on the Prague new residential development market. The beggining of the thesis is focused on performance of new residential development market in Prague and its comparison with other cities in European union including different housing standards and its economical severity. Performance analysis and current situation on the market indicate the presence of real estate bubble in past years on Prague market. This bubble has even deepened the problems on the market caused by the European economic crisis, however currently there is slow upsarge on the residential real estate market in Prague. Remaining two chapters are focused on relations between performance of residential development price per sqm in Prague and the performance of macroeconomic determinants in the range of income, financing or subsitutionary housing solution. This relation is explored through the econometric model, that explains the average aggregate price per sqm of new residential development in Prague through its macroeconomic...

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