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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

Automatization of test rig for microwave ovens

Cronborn, Jesper January 2013 (has links)
The thesis work is a part of a project where the major goal is to improve the efficiency of the evaluations of microwave ovens at Whirlpool Sweden AB. The purpose of the work has been to develop an automatic control and measurement system for microwave ovens. In an earlier thesis work, a test rig has been developed and this test rig has been further developed to an autonomous system. The software for this system is developed in LabVIEW and interfaces to some measuring instruments has been implemented for the system. As a plan for the programming work, UML-diagrams were created in Visual Paradigm To make it easy for the user to handle the system, a user interface has been created in LabVIEW. The system handles different XML-files: oven profiles and test profiles, which are defined by the user. An oven profile contains coordinates for specific positions at the front of a microwave oven, e.g. button positions and corners. There will be one oven profile per oven model. A test profile contains different stages with position names, operations and time delays. The position names are the names of the positions defined in the oven profile. The results from a measurement will be saved in a CSV-file.
2

The Whirlpool Sandstone

Gietz, Otto 05 1900 (has links)
A review of the history of the nomenclature of the Medina Formation and of the previous studies of its members, particularly those studies dealing with the source of the Whirlpool sandstone. This is an attempt to show the direction of origin of the detrital materials of the Whirlpool sandstone by a study of the lateral variation of its grain size along the Niagara Escarpment. It is illustrated with maps and with photographs taken by the writer. / Thesis / Master of Science (MSc)
3

A Petrographic and Diagenetic Study of the Whirlpool Sandstone from Outcrops in the Hamilton and Niagara Gorge Areas

Calow, Russell W. 04 1900 (has links)
<p> Four measured sections of the Whirlpool Sandstone were prepared from outcrops in the Niagara Gorge and Hamilton areas. Sedimentary structures and constituents present in the lower two-thirds of the unit are consistent with the sandy braided fluvial depositional model. proposed by Salas [1983]. The upper one-third of the unit has been deposited in a near shore, shallow marine environment. All samples have been classified as Quartzarenites, or Sublitharenites after Folk [1974] and the source of the Whirlpool lies to the southeast in primarily pre-existing sediments, with some input from low grade metamorphic and hydrothermally veined terrains. </p> <p> Cathodoluminescent microscopy has proven to be a safe, relatively inexpensive, easy to use method, that offers a great deal of new information. The technique's only drawback is the gradual destruction of thin sections by the electron beam. The CL study demonstrated that pressure solution was not the source of the massive, pore occluding, mesodiagenetic quartz cement. Since very low diagenetic temperatures have been calculated for the Whirlpool in the study area [360C]; the local generation of silica would be impossible. Instead, it has been suggested that silica was carried in by saturated pore fluids that had migrated up-dip from source areas deep within the depositional basin to the southeast. Similarly, pyrite was precipitated as H2S bearing fluids migrated through the unit. These reducing fluids also produced the reduced zone at the top of the Queenston Formation. The H2S was produced during the maturation of hydrocarbons. Calcite cement is more abundant in the upper marine units of the Whirlpool. This suggests that the source of the calcite was local detrital carbonate in the upper marine units. Quartz cementation ceased when the porosity had been reduced sufficiently to inhibit the passage of the migrating pore fluids. Thus, the calcite cement precipitated from static pore fluids. The local detrital carbonate was dissolved by the acidic fluids that carried in the silica. This Ca+2 rich fluid was prevented from mixing with the bulk porewater and calcite precipitation occurred due to an increase in C02 by the decay of organic detritus in the upper marine units. The major proportion of secondary porosity was formed during mesodiagenesis by the dissolution of calcite. The pore fluids became undersaturated with respect to calcite when local intershale water was released into the porewater. The formation of dolomite cement was in response to a decrease in the amount of available iron relative to magnesium due to the precipitation of ferroan calcite. The zonation of the dolomite reflects rapid changes in porewater composition. Four morphologies of illite have been identified: two represent direct precipitation from alkaline, K+ rich solution; one may be detrital in origin, or it could represent illite that has been mechanically infiltrated down into the sand after deposition; and the fourth is a mixed layer assemblage that has been formed by the replacement of earlier clays by illite. The oil and gas found in the Whirlpool Sandstone in the Lake Erie area have probably migrated up-dip from source areas deep within the depositional basin to the southeast. </p> / Thesis / Bachelor of Science (BSc)
4

Sourcing strategies and supplier relationships : A comparative study of manufacturing companies in the Swedish construction and the white goods industries

Håkansson, Fredrik, Johansson, Tomas, Mbanga Missola, Henri January 2009 (has links)
Background: In manufacturing companies purchasing is a great part of the total cost and major suppliers have a decisive role for the company. Therefore it is important to emphasise the selection and relationship with these suppliers to make the organization profitable. Sourcing strategies and supplier relationships are the main elements of supplier management. Purpose: The main goal of this study is to underline the similarities and differences regarding sourcing strategies and supplier relationships among the manufacturers of the two industries in order to identify the best practices and possibilities for knowledge transfer. Methodology: This thesis is a descriptive comparative study that was conducted with a deductive approach. Data was collected by interviews of mainly purchasing managers of our studied companies, annual reports and web pages of the companies. The scientific credibility of this thesis was secured by using many sources and avoiding assumptions. Conclusions: Several similarities and differences have been found between the industries. Furthermore, both industries can learn from each other when it comes to the use of sourcing strategies and supplier relationships.   Suggestions on future research: A more extensive study with more companies in each industry can be made to strengthen our conclusions. Furthermore, scenario simulations can be conducted for the supply of products and see how a manufacturing company can be affected.
5

Sourcing strategies and supplier relationships : A comparative study of manufacturing companies in the Swedish construction and the white goods industries

Håkansson, Fredrik, Johansson, Tomas, Mbanga Missola, Henri January 2009 (has links)
<p> </p><p><strong>Background: </strong>In manufacturing companies purchasing is a great part of the total cost and major suppliers have a decisive role for the company. Therefore it is important to emphasise the selection and relationship with these suppliers to make the organization profitable. Sourcing strategies and supplier relationships are the main elements of supplier management.</p><p><strong>Purpose: </strong>The main goal of this study is to underline the similarities and differences regarding sourcing strategies and supplier relationships among the manufacturers of the two industries in order to identify the best practices and possibilities for knowledge transfer.</p><p><strong>Methodology: </strong>This thesis is a descriptive comparative study that was conducted with a deductive approach. Data was collected by interviews of mainly purchasing managers of our studied companies, annual reports and web pages of the companies. The scientific credibility of this thesis was secured by using many sources and avoiding assumptions.</p><p><strong>Conclusions: </strong>Several similarities and differences have been found between the industries. Furthermore, both industries can learn from each other when it comes to the use of sourcing strategies and supplier relationships.  </p><p><strong>Suggestions on future research: </strong>A more extensive study with more companies in each industry can be made to strengthen our conclusions. Furthermore, scenario simulations can be conducted for the supply of products and see how a manufacturing company can be affected.</p>
6

Městské lázně / The Municipal Baths

Eliáš, Petr January 2010 (has links)
The project deals on one hand with means of activation of the site trying to establish new connections in the city. One the other it tries to redefine standards of bath culture.
7

Dialogic imagination in Jane Urquhart's The Whirlpool, Changing Heaven, and Away

Clendinneng, Elaine J. January 2001 (has links)
Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.
8

A Study of the Diagenetic History and Proposed Depositional Environment of the Manitoulin Formation in Southern Ontario

Leggitt, Shelley 04 1900 (has links)
<p> The transition from the Whirlpool Sandstone to the Manitoulin Dolomite represents a marine transgression. Within the Manitoulin Formation, the proportion of siliclastics to carbonates shows a marked upward decrease. The Manitoulin Formation consists of four main facies. The lower two facies indicate an inner shelf environment, while the upper two represent a middle to outer shelf environment. </p> <p> These sediments have been almost totally dolomitized. Cathodoluminescent microscopy was employed to determine the diagenetic history of quartz, calcite, and dolomite cements. The petrographic characteristics of the dolomite using CL and normal light indicate a late stage (epigenetic) dolomitization. </p> <p> Dolomitization is thought to have been a late diagenetic process brought about by Mg-rich fluids expelled during compaction of adjacent shales and supplemented by brines circulating through fracture systems. </p> / Thesis / Bachelor of Arts (BA)
9

Ismailova, Rita 01 September 2012 (has links) (PDF)
The subject of this thesis is the study of cryptographic hash functions, which utilize block ciphers as underlying chain functions. It is mainly concerned with the analysis of the three hash algorithms, the Whirlpool, Gr&oslash / stl and Grindahl. All these hash functions have underlying block ciphers that are modified versions of the Advance Encryption Standard and we investigate the behavior of these block ciphers under the integral attack. Statistical tests, such as the avalanche test and the collision test, are the regular tools for examining the hash function security. In this work, we inspect the statistical behavior the three hash functions and search for collisions. Although it is very difficult to obtain collisions for the actual algorithms, we find some collisions under slight modifications of the original constructions. The ease or difficulty of finding a collision for a modified version also shows the respective importance of the specific hash function branch, missing in the modified version.
10

Zařízení pro sport a relaxaci / Equipment for sports and relaxation

Doupal, Ondřej January 2013 (has links)
The project design processes multifunctional center for leisure and sports. The center is situated in Šternberk and its capacity is about 150 people. There is inter alia the wellness center, with saunas and whirlpool, a fitness, gym and a beauty salon. Architecturally, the object is conceived as paralell blending of three units of a different colors and sizes. As well as all construction compositions are more developed basis for air conditioning systems. Documentation is processed at the level of documentation for building permit.

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