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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.
31

Exploring the Potential of 3D Printing Construction to Address the Housing Crisis for South Sudanese Refugees

Quinn, Kyle O.'Brien 08 November 2021 (has links)
South Sudan currently has the third largest refugee crisis around the globe, with over 3.7 million people being displaced from their homes due to ethnic and political civil war. Over 2 million of these refugees have been displaced from their home country, seeking asylum in refugee settlements that neighbor South Sudan. One of the most important needs within these settlements is adequate housing. Through polling and census data, it has been found that more than half of the refugees are living in dilapidated housing conditions, without any resources to make repairs. The average amount of time spent within these settlements is over a decade and is increasingly getting worse as more refugees enter these settlements. Due to the exponential technological advancements in 3D printing technology, using this form of construction could potentially address a situation within a refugee settlement. 3D printing technology could provide benefits due to its ability to produce housing units at a high rate, its ability to use clay aggregate soil as construction material, mimicking adobe brick housing found in Africa, and the ability to lower the need for labor within these settlements. This thesis will explore the idea of employing this technology within a refugee settlement, to test if it can appropriately balance the implementation of a high tech 21st century technology with the historic and cultural vernacular architecture found regionally throughout Africa. / Master of Architecture / The country of South Sudan currently is experiencing the third largest refugee crisis around the globe. Over 2.5 million refugees have fled their home country of South Sudan and are entering refugee settlements from neighboring countries. Due to the exponential increasing rate of refugees within these settlements, issues such as overcrowding and inadequate housing are afflicting the lives of everyone here. Typical houses in South Sudan consist of mud and adobe brick material known as "tukul huts". While these huts have remained the leading housing type for the past 2,000 years, these houses where not intended for addressing the common refugee crisis we are experience today. These huts require the period of months to construct and extensive physical labor. Given that the refugees are entering these settlements at an exponential rate, it is ineffective to approach housing construction in a traditional manner due to the time and effort it requires to keep up with the high demand. A possible way to address this concern, is by looking at other construction practices that could potentially supplement the traditional forms of erecting houses. Construction technology has advanced to the point where 3D printers can create life size structures that provide housing to individuals. This thesis will explore the idea of employing 3D printers into a South Sudanese refugee settlement, to see if it can adequately produce houses that provide shelter for the incoming refugees.
32

Wartime huts : the development, typology, and identification of temporary military buildings in Britain, 1914-1945

Draper, Karey Lee January 2018 (has links)
The use of temporary, prefabricated buildings in Britain during the twentieth century arose from wartime need to provide better, and perhaps more importantly, portable shelter for troops and equipment. This thesis provides the first comprehensive list of hut designs for the First and Second World Wars. The full lists and descriptions of each hut are given in the appendices. These lists, 20 types for the First World War and 52 from the Second World War, show the huge range and scope of the huts used and is the major contribution of this thesis. The concentration here is on generic types. Some huts were designed as one-offs and there is no possible way to catalogue these. This thesis has focused instead on those designs or industrially-produced types, which were meant to be produced en-masse as generic solutions to the problem: the sort of hut that might justifiably be given a name (such as a ‘Tarran’, a ‘Seco’, etc.). This thesis provides essential information enabling historians to be able to identify these types. It uses primary and secondary sources to trace the development of these huts and the effect that wartime shortages had on their design. Beginning with the earliest examples of temporary military building, it then focuses on the huts of the First and Second World Wars followed by a study of huts grouped in chapters by material. This research shows that the wartime period pushed industry to make giant leaps forward with construction methods and materials in just a few short years, where otherwise it may have taken decades. This thesis aims to provide the first overview of this process and to enable future researchers to identify and understand the development of these important wartime structures, many of which survive to this day.
33

Point-of-sale (POS) system for Pizza Hut Hong Kong.

January 1993 (has links)
by Nicholas T.H. Jim. / Thesis (M.B.A.)--Chinese University of Hong Kong, 1993. / Includes bibliographical references (leaf 48). / ABSTRACT --- p.i / TABLE OF CONTENTS --- p.ii / LIST OF ILLUSTRATIONS --- p.v / ACKNOWLEDGMENTS --- p.vi / Chapter / Chapter I. --- INTRODUCTION --- p.1 / Company Background --- p.1 / Scope and Objectives --- p.2 / Methodologies --- p.4 / Chapter II. --- EVALUATION OF EXISTING POS SYSTEM --- p.5 / Definition of POS System --- p.5 / Performance of Existing POS System --- p.7 / Chapter III. --- CRITERIA FOR POS SYSTEM SELECTION --- p.12 / Bas i c Criteria --- p.12 / Price --- p.16 / Reputation of Supplier and its Principal --- p.16 / Techno logy of the POS System --- p.16 / Chapter IV. --- IDENTIFICATION AND EVALUATION OF POS SYSTEM --- p.18 / Identification of POS Systems --- p.18 / New Tech POS System --- p.18 / POS System --- p.22 / Remanco Vision System --- p.25 / Micros 8700 POS System --- p.28 / Chapter V. --- DECISION MAKING --- p.33 / Second Phase Evaluation --- p.33 / Final Decision Making --- p.37 / Cost and Benefit Analysis --- p.38 / Chapter VI. --- IMPLEMENTATION PLAN --- p.40 / Swopping of POS Systems --- p.40 / Price Negotiation Tactics --- p.42 / Installation of New POS System --- p.44 / Review Meetings with Supplier --- p.44 / Chapter VII. --- CONCLUSION --- p.45 / BIBLIOGRAPHY --- p.47
34

Algorithmique hiérarchique parallèle haute performance pour les problèmes à N-corps

Fortin, Pierre 27 November 2006 (has links) (PDF)
Cette thèse porte sur la méthode dite « méthode multipôle rapide » qui résout hiérarchiquement le problème à N-corps avec une complexité linéaire pour n'importe quelle précision. Dans le cadre de l'équation de Laplace, nous souhaitons pouvoir traiter efficacement toutes les distributions de particules rencontrées en astrophysique et en dynamique moléculaire.<br /> Nous étudions tout d'abord deux expressions distinctes du principal opérateur (« multipôle-to-local ») ainsi que les bornes d'erreur associées. Pour ces deux expressions, nous présentons une formulation matricielle dont l'implémentation avec des routines BLAS (Basic Linear Algebra Subprograms) permet d'améliorer fortement l'efficacité de calcul. Dans la gamme de précisions qui nous intéresse, cette approche se révèle plus performante que les améliorations existantes (FFT, rotations et ondes planes), pour des distributions uniformes ou non.<br /> Outre une nouvelle structure de données pour l'octree sous-jacent et des contributions algorithmiques à la version adaptative, nous avons aussi efficacement parallélisé notre méthode en mémoire partagée et en mémoire distribuée. Enfin, des comparaisons avec des codes dédiés justifient l'intérêt de notre code pour des simulations en astrophysique.
35

Holmöarna archipelago and its forgotten Iron Age period : Uncovering the past through morphology and GIS-analysis / Holmöarna skärgård och dess bortglömda järnålder : Avslöjning av forntiden genom morfologi och GIS-analys

Bodén, Alexander January 2023 (has links)
The geographical focus area of this essay is Holmöarna archipelago, which is a very large group of islands that are located a short distance to the east of the city Umeå, in northern Sweden, Västerbotten county. This essay is an attempt to uncover and provide knowledge regarding Holmöarna archipelago’s forgotten Iron Age period through the means of GIS-analysis, literary studies, a field visit, as well as morphological comparisons of ancient artefacts and monuments from the area. / Det geografiska fokusområdet i denna uppsats är Holmöarna skärgård, vilket är en mycket stor ögrupp som är lokaliserad ett kort avstånd öster om staden Umeå, i norra Sverige, Västerbottens län. Denna uppsats är ett försök att avslöja och förse information som har med Holmöarna skärgårds bortglömda järnålder att göra. Detta sker med hjälp av GIS-analyser, litterära studier, ett fältbesök, samt morfologiska jämförelser av artefakter och fornlämningar från området
36

Collapsible Home : Celebrate life again / Hopfällbara Hem

Kalantari, Meisam January 2016 (has links)
There has been significant increase in the occurrence of earthquakes and other disasters around the world recently. With record-breaking storms and natural disasters destroying different parts of the world, many people have to deal with the repercussions of the aftermaths; and homelessness is one of the facts of such incidence. This master thesis is aimed at creating living solution for the victims of earthquakes and other kind of disasters; natural or human-made (war), providing accommodation for homeless people after an earthquake or a housing alternative for refugees. The design of the collapsible home is basically a new concept of emergency hut for accommodating people in emergency after the event of disaster with easy assembling and quick installation feature. Considering the situation of homeless people after catastrophic disasters who need to be accommodated, the design and creation of a quick, accommodating and low-cost emergency hut is advantageous.  This project also provides a living service for both refugees and homeless people. It is low cost, modular, and easy to use. More than that it is feasible and it makes it possible to accommodate people for a longer period of time, rather than a very short temporary housing solution such as tents. / Det har skett en signifikant ökning av jordbävningar och andra katastrofer i världen. Med rekordstora stormar och naturkatastrofer som förstör i delar av världen måste många människor nu hantera efterverkningar och återuppbyggande, och hemlöshet är en av de faktorer som uppstår och som påverkar människor mest. Det här examensarbetet syftar till att skapa en boendelösning för offer för jordbävning och andra naturkatastrofer och krig. Det hopfällbara hemmets design är ett koncept för krisboende med enkelt montage och installering. Om man betänker den situation som människor hamnar i som blir hemlösa vid en katastrof, kan en design av en snabb och billig boendelösning som krisboende ge enormt mycket. Projektet kan också vara en boendeservice till flyktingar och människor som är hemlösa av andra anledningar än katastrofer. Det tillverkas för en låg kostnad och är möjlig att använda som modul och enkel att sätta upp. Men viktigare än det är att den ger möjlighet att härbergera människor under en längre tid till skillnad från mer temporära lösningar som exempelvis tält. Det hopfällbara hemmet är gjort av hållbart material, den använder grön energi och lyser upp staden. Den är utrustad med vertikala trädgårdar för att användarna ska kunna odla egna grönsaker och den återvinner vatten från regn. Den innehåller basala hopfällbara möbler och rumsavdelare som ger känsla av hemtrevnad och bekvämlighet.

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