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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 role of ice blocks in the creation of distinctive proglacial landscapes during and following glacier outburst floods (jokulhlaups)

Fay, Helen January 2001 (has links)
The role of ice blocks in the creation of distinctive proglacial landscapes during and following glacier outburst floods (jökulhlaups) In recent years, it has been recognised that ice blocks form a major component of jökulhlaups. There are, however, very few published hypotheses of ice-block impact during and following jökulhlaups. The November 1996 jökulhlaup in southern Iceland, which transported ice blocks as large as 55 metres in diameter on to Skeioarärsandur, provided an opportunity to study ice-block impact produced during a high-magnitude flood. This thesis aims to (i) determine the impact of ice blocks on the morphology and sedimentology of proglacial river channels during and following a jökuihlaup, and (ii) provide a model which links distinctive landscapes created by ice blocks with specific controls on ice-block impact. A range of ice-block related features are produced during and following a jökulhlaup reflecting glacial and topographical constraints, ice-block characteristics and jökulhlaup hydraulics. In locations where sediment flux remains high throughout a flood, large ice blocks form kettle-scours. Rapid sediment deposition around ice blocks results in the formation and preservation of antidune stoss sides, entirely aggradational ice block obstacle shadows and hummocky topography. The grounding of ice blocks in flows of low sediment concentration or total exhumation of buried ice blocks results in the formation of classic U-shaped obstacle marks. Where channel geometry abruptly expands ice-block berms form. On outwash fans kettle holes and obstacle marks occur in distinct clusters. 11 Kettle holes form post-flood by the in situ melt of (1) progressively buried ice blocks and (2) small ice blocks incorporated into flow deposits. Ice block debris is superimposed onto obstacle marks and kettle holes and deposited on the post-flood streambed to form rimmed kettle holes and obstacle marks and ice-block till mounds respectively. Knowledge of associations between ice blocks and the bedforms and facies produced during and following a jökulhlaup will aid jökulhlaup identification and reconstruction in modern and ancient proglacial environments.
2

The application of adaptive control in a steam-jacketed kettle

Wen, Tzeng Jing January 1987 (has links)
No description available.
3

Direct digital control of a steam-jacketed kettle

Montilla, Victor Leon January 1985 (has links)
No description available.
4

Implementace Open Source BI ve zdravotnictví / Implementation of Open Source BI in Healthcare

Vencovský, Josef January 2013 (has links)
This diploma thesis deals with implementation of open source Business Intelligence solution Pentaho Community Edition 5.0 (Pentaho CE) in particular healthcare institution and it tries to prove its usability in full operation. In theoretic part there are defined concept and principles of Business Intelligence and specifics BI solution implementation in healthcare. In practical part there are detailed analysis of Pentaho CE and demonstration of usage in healthcare presented by implementation into specific healthcare institution. The main benefit of this thesis is description of implementation Pentaho CE using author's practical experience in healthcare area and advanced knowledge of Pentaho CE. The main goal, the verification of usability in production, is fulfilled in both theoretical and practical parts of this diploma thesis. There are also calculated costs and approximate suggested schedule of main activities. Functionality of Pentaho CE is attested in detailed analysis which is possible to use as guide on its own describing general architecture of Business Intelligence solution Pentaho CE.
5

Implementace IoT zařízení pro chytrou domácnost / Implementation of an IoT device for Smart Home

Popela, Vojtěch January 2018 (has links)
The aim of this thesis is to acquainted with the concepts of Internet things, a smart home, and then design and implement smart home appliance – a kettle. The theoretical part of this thesis deals with the description of The Internet of Things, Smart Home, market research of Kettles, protocols used in the Internet of Things and analysis of functions to implement. In the first part of the solution a program for a control unitbuilt on the development board ESP8266 is created and the local control is put into operation. In the second part a web application is designed and put into operation. The third part of the solution contains photo documentation and project description. The fourth part analyzes power consumption and also includes a proposal for saving energy. The last part includes the design of printed circuit boards.
6

Stratigraphic and palaeoenvironmental observations in the deposits of a postglacial kettle hole, in the county of Västernorrland

Kourela, Genofeva Eva January 2020 (has links)
The increased human impact on the environment and climate after the retreat of the Last Glacial has strengthened its importance in the region of Västernorrland where Mesolithic sites are evident. This study focuses on a multiproxy analysis, where archaeological and natural science methods are combined to test several techniques in a peat sample. The origin of the peat sample is coming from the formation of a postglacial kettle hole situated near to Mesolithic sites. The aim of this thesis is twofold. Firstly, to estimate the value and the weakness of each method as also the combination of multiple results. Secondly, to reconstruct the palaeoenvironment including the detection of possible indications from past cultures. To begin with, the peat sample was collected from a kettle hole near Lillsjön lake, see (fig. 1) in 2010. The total depth of the peat sample was 80 cm and after its sampling, it was placed in a cold storage room until the spring of 2019, when analysis was conducted. Initially, a theoretical background will be presented as well as information for the area of study in the section of Scientific background. Moreover, a short theory is going to be given for the formation of the landscapes in cold environments as also the validity of beetle fossils with examples from previous case studies. After the theory part, all the methods are specified with results and appropriate diagrams and tables. After the analysis, the discussion will follow by combining all the methods and give potential theories for the reconstruction of the palaeoenvironment. The discussion part is divided into smaller chapters and after the conclusion an appendix is given with fossil photographs that were taken during the identification, see (fig.15,16,17).
7

Petrology of Some Early Tertiary Lavas of the Kettle River Region, British Columbia

Church, Barry Neil 09 1900 (has links)
Information provided by previous workers shows a considerable diversification of lava types in the early Tertiary deposits of the Kettle River region of British Columbia. The aim of the present study is to establish, on the basis of mineralogical and chemical evidence, whether or not these lavas form a single magma series. A suitable spectrochemical technique was adapted for the determination of Sr, Ba, CaO, MgO, and FeO in rock samples and mineral extracts. A method based on the work of Shaw and Filby, using lanthanum as an internal standard for determination of Sr, Ba, and Ca, is extended to include the determination of MgO and FeO. Extension of the available chemical data was possible using a fused glass bead technique for refractive index determination of the lavas. In view of good correlation between refractive index and the most refractory constituents of the lavas CaO, MgO, and FeO, the refractive index serves as a good magmatic differentiation index. Examination of the refractive indices of three suites of samples, taken from widely separated points within the Kettle River region, shows that the lavas range from semi-basic to acid composition with intermediate types, andesites and trachyandesites, predominating. There is a marked paucity of basaltic rocks. The stratigraphic distribution of the lavas reveals no consistant trends toward either acid or basic compositions; neither is there any relation between stratigraphic position and lava types within the region concerned. In spite of close age and spatial association of the lavas, petrological evidence points to a three-fold division of these rocks (termed 'A', 'B' , and 'C' series). 'A' series is similar to the silica-enrichment 'calc-alkali' trend showing regular mineral and chemical progression from andesites to latite and rhyolite. 'B' series is characterized by a somewhat less well defined group of two-feldspar lavas, trachyandesites, and trachytes. An unusual undersaturated lava, termed 'analcite rhomb-porphyry' or 'shackanite' is thought to be genetically related to 'B' series but probably belongs to a poorly developed semi-basic alkali trend, 'C' series. A mechanism involving crystal fractionation of hornblende, or alternately, augite and plagioclase, is envisaged as the probable mode of origin for many of the rocks of 'A' series. On the other hand, Daly's view that the shackanite lavas were formed as a result of limestone assimilation is supported by field evidence as well as mineral and chemical data. The rocks of 'B' series, the trachyandesites and trachytes, are intermediate in composition to 'A' and 'C' series and have probably formed by process of crystal fractionation in consequence of normal cooling conditions and limestone assimilation. / Thesis / Master of Science (MSc)
8

An Ichnological and Sedimentological study of Devonian Black Shales from the Long Rapids Formation, Moose River Basin, Northern Ontario

Bezys, Ruth Krista Angela 07 1900 (has links)
<p>The Long Rapids Formation in the Moose River Basin of northern Ontario is Upper Devonian in age and can be correlated with similar shale deposits in the Michigan, Appalachian, and Illinois Basins . The southern Ontario equivalent to the Long Rapids Formation is the Kettle Point Formation. </p> <p> The Long Rapids Formation is a marine black shale deposited predominantly under depleted oxygen conditions. Large amounts of marine organic matter from the water column and from terrestrial sources accumulated in reducing bottom waters with little recycling to produce brown to black, organic-rich sediments . The depositional basin was stratified, and anoxic bottom waters and oxic surface waters were separated by a pycnocline. The position of the pycnocline (or the absence of it) dictated the type of sediment deposited, and the relative depth of the pycnocline to the sediment-water interface was more important than the absolute depth of the water column. The Moose River Basin in Late Devonian times was located on the Laurasian Continent in an area experiencing tropical conditions and was affected by a period of transgression following the Acadian Orogeny. The black shales in the Long Rapids Formation represent a period of transgression of the large epicontinental Catskill Sea, whereas the green-grey mudstones and carbonates represent periods of minor eustatic changes. </p> <p> Dark-coloured facies with abundant bioturbation are overlain by lighter-coloured facies. Bioturbation is variable in the less abundant green-grey mudstone and carbonate facies, and were also low in organic matter. The ichnofauna suite Chondrites-Planolites-Zoophycos-Alcyonidiopsis-(?Teichichnus) represents an oxygen-minimum ichnofacies found predominantly in dark shale facies. As more oxygen was introduced to the sediment-water interface, more permanent burrow structures were constructed such as Teichichnus, Terebellina, ?Cylindrichnus, Skolithos, and Ichnogenus "A" in the green-grey mudstones and carbonates. As well, body fossils were more commonly found in those facies. The Leiorhynchus brachiopod fauna in the dark-coloured shales probably represents a sparse epifauna living in poorly oxygenated or temporarily oxic conditions in a basinal or open-shelf environment. </p> / Thesis / Master of Science (MSc)
9

Water Kettle for Induction Stoves / Vattenkokare för induktionsspisar

Bylund, Frida, Kåwe, Linnea January 2018 (has links)
This report describes the master’s thesis Water Kettle for Induction Stoves in Industrial Design Engineering conducted by Frida Bylund and Linnea Kåwe at KTH Royal Institute of Technology incollaboration with C3 Scandinavian Lifestyle. By combining induction technique with classic ways of boiling water a design proposal for a water kettle for induction stoves was developed. The scandinavian kitchen is often installed with an induction stove and development of kitchen utensils are more and more adapted to this type of technology. The classic ways of boiling water today is either with an electric water kettle or on the stove with a stove water kettle or saucepan. Combining the features of these concepts with induction technique could make the process more efficient and improve today’s way of boiling water, that is if a water kettle for induction stoves could automatically switch off when the water has reached boiling temperature. The project was initially carried out through gathering information by investigating today’s market, relatable patents and user needs. Insights from these laid the basis for generation of initial concepts that was confirmed and evaluated through a variety of tests. Refinements in terms of mechanism, design and usability were conducted to form a final design proposal. The final design proposal is a water kettle for induction stoves that automatically switches off when the water has reached boiling temperature. It offers a new, simple way to boil water in your home and is designed for the scandinavian kitchen as one of its kind. / Denna rapport beskriver masterexamensarbetet Vattenkokare för Induktionsspisar inom Teknisk design utfört av Frida Bylund och Linnea Kåwe på Kungliga Tekniska Högskolan i samarbete med C3 Scandinavian Lifestyle. Genom att kombinera induktionsteknik med klassiska sätt att koka vatten på togs ett designförslag för en vattenkokare för induktionsspisar fram. Det skandinaviska köket är ofta installerat med induktionsspis och utveckling av köksprodukter är mer och mer anpassade efter denna teknik. De klassiska sätten att koka vatten på idag är antingen med en elektrisk vattenkokare eller på spisen med en spiskanna eller kastrull. Att kombinera funktionerna från dessa koncept med induktionsteknik skulle kunna effektivisera processen och förbättra dagens sätt att koka vatten, om en vattenkokare för induktionsspisar automatiskt kan stängas av när vattnet har nått koktemperatur. Projektet genomfördes inledningsvis genom att samla information m.h.a. marknadsanalys, relevanta patent och undersöka användarens behov. Insikter från detta la grunden för generering av de första koncepten, vars funktion bekräftades och utvärderades med olika tester. Vidareutveckling och förfiningar gällande mekanism, design och användbarhet formade det slutgiltiga designförslaget. Det slutgiltiga designförslaget är en vattenkokare för induktionsspisar som automatiskt stänger av sig själv när vattnet har nått koktemperatur. Den erbjuder ett nytt, enkelt sätt att koka vatten i ditt hem och är designad för det skandinaviska köket som ett original.
10

Analýza globálních meteorologických dat / Global Meteorological Data Analysis

Gerych, Petr January 2012 (has links)
The thesis generally describes matters of data warehouses and knowledge discovery in databases. Then it focuses on the meteorological databases and their problems. The practical part of thesis describes design methods for data mining project, NOAA Global Surface Summary of the Day (GSOD), which is then implemented in two different ways using the Pentaho tools. Finally, an evaluation and comparison of these two approaches.

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