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Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Nagaraj, H. B. "Prediction Of Engineering Properties Of Fine-Grained Soils From Their Index Properties." Thesis, Indian Institute of Science, 2000. https://etd.iisc.ac.in/handle/2005/209.

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Prediction as a tool in engineering has been used in taking right judgement in many of the professional activities. This being the fact, the role and significance of prediction in geotechnical practice needs no emphasis. Bulk of all man made structures are either made of soil or are resting on natural soil, involving large quantities of soil. Thus, it is often necessary for the geotechnical engineer to quickly characterize the soil and determine their engineering properties, so as to assess the suitability of the soil for any specific purpose. Obtaining these properties requires undisturbed sa

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Nagaraj, H. B. "Prediction Of Engineering Properties Of Fine-Grained Soils From Their Index Properties." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/209.

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Prediction as a tool in engineering has been used in taking right judgement in many of the professional activities. This being the fact, the role and significance of prediction in geotechnical practice needs no emphasis. Bulk of all man made structures are either made of soil or are resting on natural soil, involving large quantities of soil. Thus, it is often necessary for the geotechnical engineer to quickly characterize the soil and determine their engineering properties, so as to assess the suitability of the soil for any specific purpose. Obtaining these properties requires undisturbed sa

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Sayahi, Faez. "Plastic Shrinkage Cracking in Concrete." Licentiate thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-133.

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Early-age (up to 24 hours after casting) cracking may become problematic in any concrete structure. It can damage the aesthetics of the concrete member and decrease the durability and serviceability by facilitating the ingress of harmful material. Moreover, these cracks may expand gradually during the member’s service-life due to long-term shrinkage and/or loading. Early-age cracking is caused by two driving forces: 1) plastic shrinkage cracking which is a physical phenomenon and occurs due to rapid and excessive loss of moisture, mainly in form of evaporation, 2) chemical reactions between ce

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Marinho, Fernando Antonio Medeiros. "Shrinkage behaviour of some plastic soils." Thesis, Imperial College London, 1994. http://hdl.handle.net/10044/1/11381.

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Combrinck, Riaan. "Plastic shrinkage cracking in conventional and low volume fibre reinforced concrete." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6572.

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Thesis (MScEng (Civil Engineering))--University of Stellenbosch, 2011.<br>ENGLISH ABSTRACT: Plastic shrinkage cracking (PSC) is the cracking caused by the early age shrinkage of concrete within the first few hours after the concrete has been cast. It results in unsightly surface cracks that serve as pathways whereby corroding agents can penetrate the concrete which shortens the expected service life of a structure. PSC is primarily a problem at large exposed concrete surfaces for example bridge decks and slabs placed in environmental conditions with high evaporation rates. Most precautio

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Combrinck, Riaan. "Plastic shrinkage cracking in conventional and low volume fibre reinforced concrete." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71648.

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Thesis (MScEng)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: Plastic shrinkage cracking (PSC) is the cracking caused by the early age shrinkage of concrete within the first few hours after the concrete has been cast. It results in unsightly surface cracks that serve as pathways whereby corroding agents can penetrate the concrete which shortens the expected service life of a structure. PSC is primarily a problem at large exposed concrete surfaces for example bridge decks and slabs placed in environmental conditions with high evaporation rates. Most precautionary measures for PSC a

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7

Sanay, Berkay. "Prediction Of Plastic Instability And Forming Limits In Sheet Metal Forming." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612486/index.pdf.

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The Forming Limit Diagram (FLD) is a widely used concept to represent the formability of thin metallic sheets. In sheet metal forming processes, plastic instability may occur, leading to defective products. In order to manufacture defect free products, the prediction of the forming limits of sheet metals is a very important issue. FLD&rsquo<br>s can be obtained by several experimental, empirical and theoretical methods. However, the suitability and the accuracy of these methods for a given material may vary. In this study, FLD&rsquo<br>s are predicted by simulating Nakazima test using finite

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Mohd, Tadza Mohd Yuhyi. "Soil-water characteristic curves and shrinkage behaviour of highly plastic clays : an experimental investigation." Thesis, Cardiff University, 2011. http://orca.cf.ac.uk/55093/.

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This thesis experimentally investigated the changes in the water content and the void ratio of initially slurried highly plastic clays under zero applied stress during the drying process, changes in the water content of compacted unsaturated clay specimens during the wetting process under zero applied stress for laterally confined and free swelling conditions, and the wetting behaviour of heavily compacted bentonite specimens under confined condition. In total three clays were used, namely MX80 bentonite, Yellow bentonite, and Speswhite kaolin. Several laboratory techniques, namely centrifuge,

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Ranjbar, Sahar. "Effect of pre-wetted perlite and fibers on autogenous and plastic shrinkage of high strength concrete." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/44023.

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This thesis deals with the mitigation of plastic shrinkage in high strength concrete through internal curing and fiber reinforcement. In addition, the effects of mixture proportioning, internal curing and fiber reinforcement on elimination of autogenous shrinkage in mortar were studied. Internal curing can prevent cement paste from self-desiccation by providing small water reservoirs within the mortar or concrete. Fiber reinforcement can potentially increase the early age tensile strength. Plastic shrinkage cracks were observed only on the control concrete specimens. That is, the addition of f

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Maritz, Jaco-Louis. "An investigation into the use of low volume - fibre reinforced concrete for controlling plastic shrinkage cracking." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/19983.

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Thesis (MScEng)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: Plastic shrinkage cracking (PSC) in concrete is a well-known problem and usually occurs within the first few hours after the concrete has been cast. It is caused by a rapid loss of water from the concrete, either from the surface through evaporation or through absorption by dry subgrade or formwork in contact with the concrete and results in an overall reduction in concrete volume. If this volume reduction or shrinkage is restrained, plastic shrinkage cracks can occur. Plastic shrinkage cracks create an unsightly appearance

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Walker, Adam Francis. "Assessment of material Strain Limits for Defining Different Forms of Plastic Hinge region in Concrete Structures." Thesis, University of Canterbury. Civil and Natural Resources Engineering, 2007. http://hdl.handle.net/10092/1231.

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The New Zealand Structural Loading Standard, until its latest revision, was using the structural displacement ductility factor as a measure of the deformation demand of all potential plastic hinges in a structure. In the revised version of New Zealand Structural Loading Standard for Earthquake Actions (NZS 1170.5:2004) the detailing of potential plastic regions is determined according to the local inelastic deformation demand in these regions. The change has been prompted by evidence that the structural ductility factor gives a poor indication of the demand on individual plastic regions. This

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Kluyts, Grant. "Investigation of the effect of selected polypropylene fibres and ultra-fine aggregate on plastic shrinkage cracks on South African roads." Thesis, Nelson Mandela Metropolitan University, 2005. http://hdl.handle.net/10948/174.

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Plastic shrinkage cracks, although not inherently structurally debilitating, expose the reinforcement in low-volume reinforced concrete roads to deleterious substances, which may reduce its effectiveness leading ultimately to structural failure. In un-reinforced low-volume concrete road these cracks appear unsightly and cause the road user an unpleasant riding experience. Many researchers believe that plastic shrinkage crack development remains a concern to the concrete industry, occurring in particularly large–area pours such as low-volume concrete roads, and therefore requires further resear

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13

Pikna, Ondřej. "Studium možností redukce objemových změn a vývoje hydratačních teplot v betonech." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392333.

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Volume changes are one of the priority characteristics of concrete that plays an important role place mainly in the durability of structures as such. These low volume changes are required especially for structures as: industrial concrete floors, massive structures and waterproof structures. One of the possibilities in reducing these changes is the use of mineral admixtures with suitable grain curve of aggregate. Another possibility is the use of shrinkage reducing admixtures. There can occur problem with efficiency (long term age) with other components of the mixture. Therefore, the effort of

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14

Llanos, Falcon Jeremy Andre, and Teves Meliza Sumak Mellado. "Control de la retracción plástica mediante el uso de dosificaciones de microfibras sintéticas DRYMIX y Fibra Ultrafina utilizando paneles normados." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/652417.

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La presente investigación buscara la dosificación optima de microfibra para controlar la retracción plástica comparando microfibras sintéticas de polipropileno FIBRA ULTRAFINA de la marca CHEMA y microfibra sintética acrílica DRYMIX RC4020 de la marca SUDAMERICANA DE FIBRAS, considerando las dosificaciones que recomiendan los proveedores por cada metro cubico de concreto. Se realizarán ensayos de laboratorio en 17 mezclas para luego medir la retracción plástica en cada una de ellas utilizando los paneles normados por el ASTM C1579-13, midiendo también las demás propiedades que serán comparadas

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15

Pinchi, Morey Sanddy Rocío, and Mejia Hosvick Jeffer Ramirez. "Propuesta de aplicación del método de auto-curado adicionando ladrillo triturado al agregado grueso para disminuir las fisuras superficiales y aumentar la resistencia a la compresión del concreto en zonas cálidas (Lima Norte)." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/652529.

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El concreto es uno de los materiales más utilizados en el mundo de la construcción, de las cuales cada material en la mezcla depende de la resistencia que se requiera de acuerdo al análisis estructural. Dentro del proceso de producción de concreto debemos garantizar que el cemento reaccione químicamente y desarrolle la resistencia para la cual fue diseñada, para esto es importante mantenerlo hidratado en ese tiempo mediante el proceso de curado. Una técnica aún no tan conocida es el auto-curado del concreto, por lo cual es una necesidad saber cuál es su influencia en el desarrollo de la resist

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Wilkinson, Timothy James. "The Plastic Behaviour of Cold-Formed Rectangular Hollow Sections." University of Sydney. Department of Civil Engineering, 2000. http://hdl.handle.net/2123/843.

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The aim of this thesis is to assess the suitability of cold-formed rectangular hollow sections (RHS) for plastic design. The project involved an extensive range of tests on cold-formed Grade C350 and Grade C450 (DuraGal) RHS beams, joints and frames. A large number of finite element analyses was also carried out on models of RHS beams. The conclusion is that cold- formed RHS can be used in plastic design, but stricter element slenderness (b/t) limits and consideration of the connections, are required. Further research, particularly into the effect of axial compression on element slendernes

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Wilkinson, Timothy James. "The Plastic Behaviour of Cold-Formed Rectangular Hollow Sections." Thesis, The University of Sydney, 1999. http://hdl.handle.net/2123/843.

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The aim of this thesis is to assess the suitability of cold-formed rectangular hollow sections (RHS) for plastic design. The project involved an extensive range of tests on cold-formed Grade C350 and Grade C450 (DuraGal) RHS beams, joints and frames. A large number of finite element analyses was also carried out on models of RHS beams. The conclusion is that cold- formed RHS can be used in plastic design, but stricter element slenderness (b/t) limits and consideration of the connections, are required. Further research, particularly into the effect of axial compression on element slendernes

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Kazaz, Ilker. "Dynamic Characteristics And Performance Assessment Of Reinforced Concrete Structural Walls." Phd thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/3/12611712/index.pdf.

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The analytical tools used in displacement based design and assessment procedures require accurate strain limits to define the performance levels. Additionally, recently proposed changes to modeling and acceptance criteria in seismic regulations for both flexure and shear dominated reinforced concrete structural walls proves that a comprehensive study is required for improved limit state definitions and their corresponding values. This is due to limitations in the experimental setups, such that most previous tests used a single actuator at the top of the wall, which does not reflect the actual

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19

Souche, Jean-Claude. "Etude du retrait plastique des bétons à base de granulats recyclés avec mesure de l'influence de leur degré de saturation." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS097/document.

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Dans une démarche de valorisation des déchets, les granulats recyclés sont introduits dans la formulation des bétons pour donner naissance à de nouveaux bétons recyclés qui représentent l’objet du projet national RECYBETON et du projet ANR ECOREB. Cette thèse se concentre sur l’étude du béton frais et en particulier la maîtrise du retrait plastique et l’effet du degré de saturation initial des gravillons recyclés sur le comportement des bétons recyclés. Deux familles de bétons avec des rapports eau/ciment respectifs de 0,6 et 0,45 ont été testés en conditions endogènes ainsi qu’en dessiccation

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Ccasani, Caballero Jean Frank Aurelio, and Carrascal Carlos Sebastian Eduardo. "Evaluación comparativa de las propiedades plasticas y mecanicas del concreto F’C 210 kg/cm2 reforzado con microfibras sinteticas de polipropileno de 20 y 30mm en losas de viviendas expuestas a altas temperaturas en Ucayali." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2021. http://hdl.handle.net/10757/656759.

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La presente investigación se basa en el estudio de la influencia de microfibras sintéticas de polipropileno en las propiedades mecánicas y plásticas de losas de concreto f’c=210 kg/cm2 expuestas a altas temperaturas en el departamento de Ucayali. Para ello, se procedió a realizar mezclas de concreto con dos microfibras de polipropileno de 20 y 30 milímetros de longitud, a su vez, dichas mezclas fueron dosificadas con 600, 900 y 1200 g/m3 de concreto y evaluarlas respecto a contracción platica, resistencia a compresión y flexión residual. El primer ensayo, se realizó en base a la Norma ASTM C-1

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Dahl, Robert, and Emelie Göransson. "Jämförelse av beräkningsprogram och handberäkningar för att minimera armeringsmängd i grundplatta." Thesis, Uppsala universitet, Institutionen för samhällsbyggnad och industriell teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-413978.

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This study is based on an analysis of a foundation slab where calculations are done to find the minimum amount of reinforcement needed. The purpose of this thesis is to find a balance between time-cost, carbon dioxide emissions and the working environment. One way to minimize time-cost is by using FEM-software. In some cases, FEM-software is more exact than manual calculations, since manual calculations usually approximate. For this reason, manual calculations are compared to FEM-Design. FEM-software is commonly used for other parts of construction, which saves time-cost and materials compared

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Heralt, Aleš. "Technologie výroby plastového krytu mobilního telefonu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228862.

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The master´s thesis is focused on technology of injection plastics. The specified part is guard cover of mobile phone. The first part of thesis is focused on description of technology with priority on construction of form. The second part of thesis includes calculations of parameters, which are needed for production, along with techno-economic evaluation of selected construction design.

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Campbell, Kevin Neil. "Plastic shrinkage in dry mix shotcrete." Thesis, 1999. http://hdl.handle.net/2429/9256.

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Plastic shrinkage cracking of dry-mix shotcrete is a common problem encountered within the construction industry. Dry-mix shotcrete is used in a wide variety of applications most commonly, the repair and rehabilitation of deteriorated concrete structures. Dry-mix shotcrete is also used as a tunnel liner, for slope stabilization, and for refractory applications. Plastic shrinkage cracks pose a significant threat to the durability and aesthetic appeal of shotcrete structures. This work was intended to develop a simple test used to study restrained plastic shrinkage in shotcrete overlays.

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Tseng, Shu-Ling, and 曾淑玲. "Analysis on Shrinkage Error Compensate of Aspheric Plastic Lens." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/65253426883538175426.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>93<br>This research is to integrate the moldflow analysis into the compensation of Z-axis deformation due to shrinkage error of plastics for mold insert in molding aspheric lens. Taguchi method is used to run experimental design for identifying the significant factors on injection parameters for minimum Z-axis deformation. Mold temperature was found as the most significant factor to the warpage. Moreover the conic fitting method was used to find out the compensation curve for deformation from the moldflow results. The compensation curve of error is a feedback to the

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Hsing, Yu-Hsi, and 刑玉璽. "Shrinkage of Injection Molded Plastic Optical Pick-up Lens." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/75986075256027863209.

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碩士<br>國立成功大學<br>航空太空工程學系碩博士班<br>91<br>Study on shrinkage and deformation of injection molded plastic optical pick-up lens was conducted. Numerical and experimental studies based on Taugchi Methods were performed. The process conditions are including mold temperature, melt temperature, packing pressure, packing time and cooling time, were investigated in the design. The dimension accuracy at inlet, center and end of the lens was used as the measure for qualifying the molded lens. In order to achieve high precision at the lens, two designs of molded inserts the aligning systems were used in the

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Shih, Ke-Ling, and 施克陵. "An Investigation into the effect of plastic fibre on plastic shrinkage cracking of concrete." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/tnq8w5.

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碩士<br>國立臺灣大學<br>土木工程學研究所<br>106<br>Plastic shrinkage occurs within several hours after casting and this type of shrinkage causes early age cracking which is known as plastic shrinkage cracking. Concrete with a large surface area compared to its volume are usually tend to form plastic shrinkage cracking. Aggressive substance may enter the cracks, which accelerate the deterioration of concrete and it also induces the exposure of reinforcement causing it to corrode faster. These phenomena will have an impact on the aesthetic value, durability, serviceability and mechanical properties of the concr

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Hsien, Yung-Cheng, and 謝永成. "The study on the thermal shrinkage behavior of plastic lense." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/43211563802251056930.

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Din, Tsaur Bin, and 曹丙丁. "Integrated Theoretical Study on Shrinkage and Warpage Plastic Injection Molded Parts." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/27982102702828013765.

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博士<br>國立清華大學<br>化學工程研究所<br>82<br>The behavior of shrinkage, warpage and sink mark of plastic injection molded parts including the crystalline and amorphous polymers have been studied in this dissertation. An integrated program, coupling the computer aided engineering technique and the polymer processing theory, was also developed in this pre- sent study to simulate the dynamic behavior of injection mold- ing filling, packing and cooling processes and the shrinkage, warpage and sink mark o

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何書偉. "Shrinkage of Injection Molding and Close-fitting of Plastic Bottle Caps." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/25169075059207732569.

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碩士<br>國立中興大學<br>機械工程學系<br>87<br>Several processing parameters which may cause the shrinkage of plastic bottle cap in injection molding are investigated, and three types of polymers including polypropylene, high-density polyethylene, and low-density polyethylene are used in experiment. CAE analysis software is also applied here to predict the process behavior in order to compare with situations resulting from injection molding experiment. Outer screw thread parts with different dimensions are produced for close-fitting to bottle cap that is made of low-density polyethylene. Also the

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Cheng, Chin-Wen, and 鄭欽文. "The Study to Improve the Shrinkage and Warpage of a Plastic Cradle." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/12455224898273020044.

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碩士<br>國立高雄應用科技大學<br>模具工程系<br>97<br>Various kinds of new device and application in information, communication and network industry are changed with each passing day. Especially the hand held mobile phone popular in these two years wins the gaze of people. Mobile phone even links up with AV entertainments, net work, information, and the satellite navigation system. They are not limited in voice communication any more. The accessories of 3C product are becoming more and more complex. What the designer even user concern about are appearance, small and thin size, the durability, besides function of

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Chan, Young-Zhi, and 陳勇志. "Application of Anaxisymmertric shrinkage compensating on precision molding of the plastic optical lens." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/42675601117195297951.

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碩士<br>國立高雄應用科技大學<br>模具工程系碩士班<br>95<br>The optical lens was the most important part in the optical system, but always because the thickness of lens was not uniformly. The lens will easily shrink after molding, and cause the dimensions difference and optical quality become low, it just like “a miss is as good as a mile”, therefore to counter to proceed the compensating emendation lenses deformed was the important point of whole process. In this paper, we used the object and eyepiece lens of refracting telescope for instance, at first we conferred the optical system design analyze, and emended

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Lee, Chia-Wei, and 李佳韋. "The effect of process condition on the void of shrinkage of Plastic wheel." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/94794424258243018226.

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碩士<br>遠東科技大學<br>電腦應用工程研究所<br>101<br>The development of the plastic has reached its peak of history; it has been the essential elements in the daily life. Lightweight, durable, high production efficiency, rich in raw materials and low prices all the advantages. Therefore, plastic components gradually replaced other materials such as metal or ceramic. However, plastic processing needs to overcome many of molding defects in injection molding, such as uneven product thickness, different shrinkage rate, sink marks, and voids. The purpose of this study is to investigate the void improvement and desi

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Lai, Chao-Hung, and 賴朝宏. "Application of Six Sigma approach to improving the bio-industry of plastic molding shrinkage." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/73750030332437908918.

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碩士<br>國立勤益科技大學<br>研發科技與資訊管理研究所<br>98<br>Important for manufacturing injection molding production process, with a large amount of manufacturing, low cost and rapid production of the advantages of the extremely wide application. Plastic injection molding is the most commonly used molding technology. In conducting plastic injection molding, plastic parts in order to obtain the best quality addition to Leung good mold design, still need to consider the appropriate processing parameters; traditional systems rely on its experienced technical staff, the future using trial and error method parameters

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Liao, Wenbo. "Quantification of the strength development in early age concrete and its resistance to plastic shrinkage cracking." 2021. https://htwk-leipzig.qucosa.de/id/qucosa%3A75972.

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Early plastic shrinkage cracking of concrete is an important factor affecting the durability of modern concrete structures. Early cracking (within 24 hours after pouring) may become a problem for any concrete structure. It will promote the entry of harmful materials, destroy the beauty of concrete members, and reduce their durability and performance. In addition, due to long-term shrinkage and/or load, these cracks may gradually expand in the service life of components. Scientific research and engineering technicians often have to face the difficulties caused by early plastic shrinkage crackin

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Han, Yi-Li, and 韓亦里. "The Prediction of Shrinkage of Plastic Injection Molded Parts and the Tuning Suggestion in Manufacturing Process with Machine Learning." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/dwxf7s.

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碩士<br>中原大學<br>機械工程研究所<br>106<br>The purpose of this research is to develop a system that can predict the size of plastic injection molded parts. The size of product is detected by the automatic optical inspection and the parameters of process of the plastic injection molding are first used to establish the relationship between the parameters of process and the size of product. According to the parameters of process adjust by this system, the quality of the product can be further enhanced. In this study, the system is trained with the Extreme Gradient Boosting (XGBoost) model of the machine lea

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Manighalam, Michael. "General methods and properties for evaluation of continuum limits of discrete time quantum walks in one and two dimensions." Thesis, 2021. https://hdl.handle.net/2144/42667.

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Models of quantum walks which admit continuous time and continuous spacetime limits have recently led to quantum simulation schemes for simulating fermions in relativistic and non relativistic regimes (Di Molfetta and Arrighi, 2020). This work continues the study of relationships between discrete time quantum walks (DTQW) and their ostensive continuum counterparts by developing a more general framework than was done in (Di Molfetta and Arrighi, 2020) to evaluate the continuous time limit of these discrete quantum systems. Under this framework, we prove two constructive theorems concerning whic

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Walker, Adam. "Assessment of material strain limits for defining different forms of plastic hinge region in concrete structures : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering at the University of Canterbury /." 2007. http://library.canterbury.ac.nz/etd/adt-NZCU20080304.082514.

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