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1

Cardoso, Pedro Alexandre Louro. "Surface finish in micromilling." Master's thesis, Universidade de Aveiro, 2008. http://hdl.handle.net/10773/2471.

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Mestrado em Engenharia Mecânica<br>A presente investigação contempla a realização de um estudo experimental usando um centro de maquinagem CNC convencional. Foi simulada e concebida a microfresagem de diversos provetes recorrendo a software CAD/CAM, usando diversas estratégias. Foi analisado o acabamento de superfície obtido bem como o tipo de rebarba produzido. Finalmente, foi efectuada uma optimização do processo de microfresagem. ABSTRACT: The present investigation contemplates the realization of an experimental study using a convencional machining CNC centre. The micromilling of samples was done and simulated using CAD/CAM software, using several strategies. The obtained surface finish was analyzed, as was the produced burr. Finally, an optimization of the micromilling process was optimized.
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2

Wang, Jianguo. "Global Finish Curvature Matched Machining." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd1102.pdf.

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3

HEABERLIN, CLIFF. "WEATHERING: THE EVER-CHANGING FINISH." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085544759.

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4

Heaberlin, Cliff. "Weathring the ever-changing finish /." Cincinnati, Ohio : University of Cincinnati, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=ucin1085544759.

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5

Lehtonen, Annukka I. "Finnish or Finish? : children's use of orthographic, morphological and phonemic knowledge in spelling acquisition." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275465.

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6

Setterberg, Petter. "Designing a Game Weapon : Start to Finish." Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-22548.

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The workflow of different game modelling artists is explored, with the goal of creating a melee weapon designed for games. A low polygon weapon was created using the research into the most common components from professional workflows of creating game models. One of the goals for the paper was to obtain a greater understanding of professional workflows when creating models for games. Other goals were to utilize the research and design a finished game model from concept to end product.
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7

Godbey, Brady Blackburne. "Surface finish control of 3D printed metal tooling." Connect to this title online, 2007. http://etd.lib.clemson.edu/documents/1202498467/.

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Hardy, Charlotte L. "Nice guys finish first : the competitive altruism hypothesis." Thesis, University of Kent, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.445722.

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9

Manuel, Deepak. "CNC tool path generation for finish milling convex pockets." Thesis, University of Ottawa (Canada), 1995. http://hdl.handle.net/10393/10354.

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Production efficiency has increased considerably due to the use of computer-numerical controlled (CNC) machines. To machine a component on a CNC machine, part programs which define the cutting tool path are needed. This tool path is usually planned from computer-aided design (CAD) drawings, and converted to a computer-aided manufacturing (CAM) machine input format. However, several production bottlenecks are encountered in this transformation process, leading to escalated production costs and time. This problem can be attributed to two major causes. The first issue is the mode by which the CAD data is converted into CAM data and the second one is the efficiency or optimality of the physical process itself in producing an error-free machined surface. Considering these drawbacks, an automatic tool path generating system to machine 2 1/2 dimensional arbitrarily shaped convex pockets was developed, in which tool path planning is done without the aid of CAD modellers or data exchange formats. This proposed methodology generates a spiral-like tool path by dynamically computing optimal offsets of the pocket boundary contour based on the type and size of the milling cutter, the geometry of the pocket contour and surface finish tolerance requirements. This part programming system is PC based and simultaneously generates a G-code file, a verification file for simulating the generated tool path on a CAD package and a result file for research purposes.
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10

Powell, B. Michael. "Surface finish optimization by modification of milling cutter parameters." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ62268.pdf.

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11

Hagiwara, Masaya. "OPTIMIZATION OF MACHINING PERFORMANCE IN CONTOUR FINISH TURNING OPERATIONS." UKnowledge, 2005. http://uknowledge.uky.edu/gradschool_theses/341.

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Unlike straight turning, the effective cutting conditions and tool geometry in contour turning operations are changing with changing workpiece profile. This causes a wide variation in machining performance such as chip flow and chip breakability during the operation. This thesis presents a new methodology for optimizing the machining performance, namely, chip breakability and surface roughness in contour finish turning operations. First, a computer program to calculate the effective cutting conditions and tool geometry along the contour workpiece profile is developed. Second, a methodology to predict the chip side-flow for complex grooved tool inserts is formulated and integrated in the current predictive model for contour turning operations. Third, experimental databases are established and numerical data interpolation is applied to predict the cutting forces, chip shape and size, and surface roughness for 1045 steel work material. Finally, based on the machining performance predictions, a new optimization program is developed to determine the optimum cutting conditions in contour finish turning operations.
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12

Jones, G. J. "A study of the surface finish produced by grinding." Thesis, Brunel University, 1985. http://bura.brunel.ac.uk/handle/2438/4893.

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A survey of the literature of grinding and surface texture shows the influence of dressing and wear on surfaces involved in the process and the advantages of stylus profilometry for data collection from both grinding wheels and ground surfaces. Statistical analysis is favoured for surface profile characterization and, of the various parameters used, power spectral density alone offers some prospect of effective comparison between these surfaces. Work on grinding with single crystals of natural corundum was eventually discontinued in favour of experiments with conventional bonded grinding wheels subjected to a dressing operation and some wear in grinding steel surfaces. Statistical parameters representing the surfaces are computed using data obtained from profilograms. Results in terms of power spectral density are presented showing progressive improvement following upon developments in apparatus and methods which facilitated the use of larger surface profile samples. Transfer functions are used to relate power spectra representing corresponding pairs of surfaces. The significance of power spectral density applied to surface profile characterization is discussed and, in this context, it is suggested that these should be described as variance spectra. Attention is drawn to certain disadvantages of variance spectra applied to grinding wheel and ground surface profiles. Methods designed to improve presentation of variance spectra lead to development of a proposed new and more suitable spectrum in which density of standard deviation of surface profile ordinates with respect to frequency is plotted against frequency. Transfer functions calculated from related pairs of these standard deviation spectra show a strong linear correlation with frequency and offer prospects of convenient comparison between the profiles of the various surfaces involved in grinding.
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13

Wirth, David J. "Improving the finish quality of large commercial air conditioners." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/43587.

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Thesis (S.M.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1997.<br>Includes bibliographical references (p. 63).<br>by David J. Wirth.<br>S.M.
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14

Finlay, Katharine. "Let me finish: Gendered conversational dominance in video-mediated communication." Scholarship @ Claremont, 2015. http://scholarship.claremont.edu/scripps_theses/532.

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Previous research has demonstrated that men and women employ different speech styles that result in an uneven power dynamic. To better understand the increasingly common interactions that take place using video-mediated communication, such as Skype and Google Hangout, the present research examines these gendered patterns in video-mediated communication (VMC). Mixed-gender dyads will be formed and ask to complete a desert survival task via VMC or in person while software analyzes their use of aggressive positive, and tentative language, as well as measuring speaking time for each party. Interpersonal perception and the use of intrusive interruptions and will also be examined. Drawing from research in Social Information Processing Theory, it is expected that users compensate for the difficulties of a communication medium in order to achieve a normal interaction. As such, men are anticipated to use more intrusive interruptions, aggressive language, and speak more than women, regardless of condition. Women are anticipated to use more positive and tentative language in both VMC and face-to-face conditions. Dominant language is also expected to mediate the relationship between gender and perceived dominance. Future research should examine the effect of race in these interactions, as well as how this dynamic effects gender non-conforming persons.
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15

O'Brien, E. "Rotational moulding of a class A finish on plastic parts." Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.395216.

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16

Kibble, Kevin Alexander. "Surface finish-mechanical property relation in reaction-bonded silicon carbide." Thesis, University of Wolverhampton, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240364.

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17

Arthur, Tara L. (Tara LeeAnne). "Factors limiting the surface finish of three dimensional printed parts." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10927.

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18

Gabardo, Michelle de Paula. "Caracterização sanitária de suínos criados em sistema wean-to-finish." Universidade do Estado de Santa Catarina, 2010. http://tede.udesc.br/handle/handle/806.

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Made available in DSpace on 2016-12-08T16:24:05Z (GMT). No. of bitstreams: 1 PGCA10MA033.pdf: 45133696 bytes, checksum: 53bbc7aa54baff70e775a4837351cdff (MD5) Previous issue date: 2010-08-11<br>This paper presents the results of sanitary evaluation of pigs raised in a wean-to-finish system (WF). The experiment was carried out in the Midwestern region of Santa Catarina, from January to June 2009. During this period, eight herds were evaluated with a total of 3545 pigs, weaned with an average of 28 days of age and 8.22 kg of body weight. Data were collected through eight sanitary assessments, performed on days 0, 7, 14, 38, 69, 102, 137 and 143 after wean, which were called assessment 0, 1, 2, 3, 4, 5, 6 and 7 respectively . The assessment 0 consisted of an overview of the herds and facilities conditions at the time of the housing of the animals. The assessments 1, 2, 3, 4, 5 and 6 consisted of tutoring clinics, being evaluated rates of diarrhea, coughing and sneezing. The assessment 7 consisted in a slaughter evaluation for pulmonary, renal, hepatic and gastric lesions. Additional clinical evaluations, with achievement of necropsies followed by collection of samples for bacteriological and histopathological exams were made in animals when there were health problems in the respective herd. The rates of coughing and sneezing in the evaluated herds increased at the 13th and 18th weeks of age. The highest rate of diarrhea was observed during the nursery period in the first assessment, when Escherichia coli and Yersinia enterocolitica were isolated. During the growing and finishing period, Brachyspira sp. (114 days old), Salmonella sp. (105 days old) and Lawsonia intracelullaris (88 days old) were diagnosed. During the nursery period the most observed diseases was post-weaning diarrhea, and during the growing and finishing period the main disease was PCV2 assosiated disease. During the nursery period the mortality rate ranged from 0 to 1.08% and during the growing and finishing period it ranged from 1.82 to 6.72%. The main causes of mortality determined were circovirosis, Porcine intestinal distencion syndrome and septicemia, which accounted for 25.20%, 11.02% and 6.30% respectively. The rate of carcass condemnation by SIF (Federal Inspection) ranged from 1.02 to 6.71%, and the main cause was pleurisy (23.08 to 100%). The frequency of atrophic rhinitis and pneumonia ranged from 13 to 70% and 16.7 to 72.7% and the which index IRA and IPP ranged from 0.13 to 1.0 and 0.25 to 1.27, respectively. Renal lesions ranged from 33 to 50%, and nephritis was the most observed. The percentage of liver with white spots ranged from 4 to 37% of animals. Lesions in the pars esophageal of the stomach were observed in all the herds with frequency between 70 and 100%. The lesion grade 1 was the most frequently<br>O trabalho descreve a avaliação sanitária de suínos criados no sistema wean-to-finish (WF). O projeto foi realizado na região do Meio Oeste de Santa Catarina, no período de janeiro a junho de 2009. Foram acompanhadas oito granjas, com total de 3.545 suínos, criados no sistema wean-to-finish, alojados com média de 28 dias de idade e 8,22Kg de peso vivo. Os dados foram obtidos através de oito avaliações sanitárias, realizadas nos dias 0, 7, 14, 38, 69, 102, 137 e 143 de alojamento, sendo denominadas avaliações 0, 1, 2, 3, 4, 5, 6 e 7 respectivamente. A avaliação 0 consistiu em visualização geral dos suínos e condições das instalações no momento do alojamento. As avaliações 1, 2, 3, 4, 5 e 6 consistiram em monitorias clínicas, sendo avaliados índices de diarreia, tosse e espirro. A avaliação 7 consistiu em monitoria de abate para enfermidades respiratórias, renais, hepáticas e úlcera gástrica. Avaliações clínicas adicionais, com realizações de necropsias e/ou coleta de material para análises bacteriológicas e histopatológicas, foram efetuadas quando ocorreram problemas sanitários nas granjas. As frequências de tosse e espirro nas granjas avaliadas aumentaram na 13a e 18a semanas de idade. O maior índice de diarreia foi observado no período de creche, na primeira avaliação, sendo isolado Escherichia coli e Yersinia enterocolitica. Na fase de crescimento e terminação foi diagnosticado Brachyspira sp. (86 dias de alojamento/114 dias de idade), Salmonella sp. (77 dias de alojamento/105 dias de idade) e Lawsonia intracelullaris (60 dias de alojamento/88 dias de idade). No período de creche a doença mais observada foi a diarreia pós desmame e na fase de crescimento e terminação foi a circovirose. A mortalidade na fase de creche variou de 0,00% a 1,08% e na fase de crescimento e terminação de 1,82% a 6,72%, entre granjas. As principais causas de mortalidade determinadas foram a circovirose seguida de Síndrome da distensão intestinal suína (SDI) e septicemia, que representaram 25,20%, 11,02% e 6,30%, respectivamente. O desvio de carcaça pelo SIF variou de 1,02 a 6,71%, sendo a pleurisia a principal causa (23,08 a 100%). As frequências de rinite atrófica progressiva e pneumonia variaram de 13% a 70% e 16,7% a 72,7%, dos animais avaliados e os IRAP e IPP variaram de 0,13 a 1,0 e 0,25 a 1,27, respectivamente. As lesões renais variaram de 33 a 50%, sendo a nefrite a mais prevalente. A percentagem de fígado com manchas brancas variou de 4 a 37%. Em todas as granjas observou-se lesão na pars esofágica do estômago, com frequência de 70 a 100%, sendo a lesão de grau 1 a mais observada
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19

Kutsenko, K. J., and D. O. Marchenko. "Hydrodynamic Effects of Shaft Surface Finish on Lip Seal Operation." Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/13361.

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20

Porter, Shelley Risch Jr. "Supercritical Fluid Extraction of Nylon 6,6 Fiber Finish and Oligomers." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/35749.

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Quantitation of the amount of finish applied during fiber manufacturing is an important industrial quality control process. Finish levels that are too low result in excessive fiber and mechanical wear. On the other hand, overly high finish levels may cause residue buildup on the processing equipment. Removal of the finish has traditionally been done with solvents such as chloroform or Freon followed by gravimetric or spectroscopic analysis of the removed material. Quantitation of low molecular weight oligomeric material is another important quality control practice for the fiber industry in that the presence of these species and their concentration affect the physical properties of the polymer. Also, excessively high concentrations of oligomers may result in residue deposits on processing equipment. Typical conventional methods for determining the concentration of oligomers present in fibers involve large quantities of organic solvent for removal of the oligomers followed by chromatographic analysis Increased government regulation of chlorinated and other solvents has led to investigations of alternate methods of extraction. Several studies have shown that supercritical fluid extraction (SFE) using carbon dioxide as the extraction fluid is an important alternative to conventional organic solvent extraction for the removal of both textile finishes and oligomeric material. This research seeks to extend the previous studies regarding the application of SFE for the quantitation of finish and oligomers from nylon 6,6 fibers. The effects of pressure, extraction temperature, modifier percentage, static extraction time, and dynamic extraction time on the supercritical fluid extraction efficiency of nylon 6,6 oligomers were examined. Results from the SFE methods for both finish and oligomer extractions were compared to results from conventional solvent extraction. The extracted oligomers were identified by HPLC with coupled on-line atmospheric pressure chemical ionization mass spectrometry (APCI-MS) and HPLC fractionation coupled with off-line Liquid Secondary Ion Mass Spectrometry (LSIMS).<br>Master of Science
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21

Al-Shahrani, Saeed. "Effect of surface finish on fatigue of austenitic stainless steels." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/effect-of-surface-finish-on-fatigue-ofaustenitic-stainless-steels(6acdedf2-4211-433b-b37a-2846dc6138d2).html.

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The effect of surface finish on fatigue limit of two types of austenitic stainless steels (AISI 304L and AISI 316L) has been investigated. Fatigue specimens having two different surface conditions were obtained by changing the final cutting condition; annealing was performed to separate the residual stress effects from surface roughness. Electropolished samples were tested as a reference for each material. A generic mechanistic model for short fatigue crack propagation proposed by Navarroand Rios (N-R model) was implemented to assess its suitability for predicting the fatigue behaviour of specimens with various controlled surface conditions, obtained by machining. The surface/material properties required to implement this model were obtained by electron backscatter diffraction (EBSD), surface profilometry, hardness testing and X-ray diffraction residual stress measurement. The fatigue limits were determined using rotating-bending by means of the staircase method. The fatigue limits predicted by the N-R fatigue model were compared with the results of the fatigue tests. There was no agreement between the prediction and observations, indicating that the original form of the N-R model is not appropriate for austenitic stainless steels. In AISI 304L, the surface residual stresses are the dominant parameter, allowing prediction of the effects of machining on fatigue resistance while, the surface roughness developed by machining has no significant effect. In AISI 316L, the effect of surface roughness is found to be negligible, with a weaker effect of surface residual stress than has been observed for AISI 304L. Crack nuclei in run-out (>107 cycles) fatigue tests were observed to arrest at twins and martensite packets, developed by fatigue in AISI 316L and AISI 304L, respectively. Good agreement with experiments was achieved by using a modification to the fatigue model, which takes account of the observed effect of the plastic deformation on the microstructure.
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22

Smith, Jeannette N. "15 to Finish| Exploring Campus Population Experiences and Policy Implementation." Thesis, University of Nevada, Reno, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10263096.

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<p> This qualitative study examined the lived experiences of key campus stakeholders and policy implementation. Using semi-structured interviews, key stakeholders were asked about their experiences with 15 to Finish: a 2014 completion message that led to a financial aid policy. Through snowball sampling, participants included administrators from the state higher education system, senior administrators from academic and administrative units, professional and academic advisors, and students. Data was also collected through meeting agendas and agency reports. Interviews were transcribed and all text was analyzed using hermeneutic phenomenology. Three key themes were constructed: (a) administrators and faculty help students because it is the right thing to do; (b) messaging and communication of a policy and campaign can be divisive and should employ a communications plan; and (c) Nevada is experiencing a change in college culture from access to completion.</p><p>
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Qu, Xiuzhi. "An integrated approach to finish machining of RP-produced parts /." View online ; access limited to URI, 2003. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3112126.

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24

Madiwal, Shashidhar Behnam Bahr. "Analysis of surface finish in drilling of composites using neural networks." Diss., The archival copy of this thesis can be found at SOAR (password protected), 2006. http://soar.wichita.edu/dspace/handle/10057/566.

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Thesis (M.S.)--Wichita State University, College of Engineering, Dept. of Mechanical Engineering.<br>"July 2006." Title from PDF title page (viewed Apr. 25, 2007). Thesis adviser: Behnam Bahr. Includes bibliographical references (leaves 79-81).
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Palardy, Genevieve. "Resin volumetric changes and surface finish characterization of composite automotive panels." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=18449.

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The automotive industry is increasingly using resin transfer moulding (RTM) to produce composite body panels at high volumes and low costs. However, one of the recurring issues is the control of the parts surface finish, which is closely linked to the resin volumetric changes during cure. These volumetric changes are caused by the resin cure shrinkage and thermal expansion which depend on material and processing parameters. Low profile additives (LPA) are thermoplastic particles incorporated to unsaturated polyester (UP) resin to compensate for cure shrinkage. The effect of LPA content and degree of cure on the volumetric cure shrinkage and the coefficient of thermal expansion (CTE) were investigated with a modified rheology procedure and thermo-mechanical analysis (TMA). The resin glass transition temperature (Tg) was also evaluated from the TMA results. The resin characterization efforts were validated through the moulding of Class A F3P glass preform composite panels under optimized processing conditions in order to obtain the best surface finish. The average roughness (Ra) and the average waviness (Wa) were measured by profilometry. To observe the effect of the painting process on the surface quality of the panels, the latter were submitted to low-temperature and high-temperature painting cycles according to the industry standards. Their surface finish was then measured again by profilometry and related to the as-moulded results. The results of the cure shrinkage and thermal expansion characterization were finally used to predict the dimensional changes of a panel during typical manufacturing by RTM. The surface quality was improved after the low-temperature painting cycle. There was however a decrease of quality after the high-temperature cycle. The dimensional changes predictions of typical UP/fibreglass panels during RTM were found to be in accordance with surface finish measurements.<br>L'industrie automobile utilise de plus en plus le procédé d'injection sur renfort (RTM) pour produire des carrosseries à grand volume, mais à faible coût. Par contre, un des problèmes communs est le contrôle du fini de surface des pièces, lié de près aux changements volumétriques de la résine durant la polymérization. Ces changements volumétriques sont causés par le rétrécissement de la résine durant la polymérization et l'expansion thermique, tout deux dépendant des paramètres du procédé et des matériaux. Les agents anti-retrait (LPA) sont utilisés pour compenser le rétrécissement des résines polyester insaturé (UP). L'effet des LPA et du degré de polymérization sur le rétrécissement de la résine et le coefficient d'expansion thermique (CTE) a été investigué à travers l'utilisation d'un rhéomètre et d'un analyseur thermo-mecanique (TMA). La température de transition vitreuse a également été déterminée par les résultats du TMA. La validation des résultats de la caractérisation de la résine a été réalisée par la production de panneaux UP/fibre de verre classe A selon les conditions optimales du procédé RTM pour obtenir le meilleur fini de surface. La rugosité moyenne (Ra) et l'ondulation moyenne (Wa) ont été mesurés par profilométrie. L'effet du procédé de peinturage sur le fini de surface a été evalué en soumettant les panneaux à un cycle basse-température et un cycle haute-température selon les standards de l'industrie automobile. Le fini de surface a été mesuré à nouveau par profilométrie et comparé aux résultats précédents. Les résultats de rétrécissement et d'expansion thermique de la résin ont finalement été utilisés pour prédire les changements dimensionels d'un panneau durant sa fabrication par RTM. Le fini de surface a été amélioré suite au cycle de peinturage à basse-température. Il y a cependant eu une diminution de la qualité après le cycle haute-température.
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呂俊強 and Chun-keung Pierre Lui. "Surface irregularity models in CAD applications: surface finish and tolerance allocation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1988. http://hub.hku.hk/bib/B31239067.

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Stewart, Rebecca L. "Processing induced surface finish effects for RTM glass mat thermoset composites." Thesis, University of Warwick, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273441.

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28

Wang, Renze S. M. Massachusetts Institute of Technology. "Numerically generating topology of the liner finish in internal combustion engines." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/101853.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2015.<br>Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 74-77).<br>Internal combustion (IC) engines are broadly utilized today. The friction caused by piston rings in IC engines contributes around 20% of the mechanical friction losses. The liner finish is the most critical parameter to define the tension and other design parameters of the piston rings for proper sealing. This work is focused on developing numerical approaches to generating liner finishes based on certain values of topology parameters. The generated surface is able to simulate the lubrication and dry contact behaviors of the original surface, so that the method is used to study the effects of various topology parameters on friction losses. First, methods to analyze, generate, test, and compare honed liner surfaces have been developed. The algorithm to analyze the topology parameters of honed surfaces is described. The honed surfaces are numerically generated and compared with the experimental data. Moreover, the topological variables are changed and the corresponding friction behaviors are studied. The relations between topology variables and friction losses are illustrated. We also developed a quantitative relation between two ISO standards describing the honed liner finish, so that the manufacturing industry can use the surface generation method in convenience. Second, attempts were made to simulate the break-in processes for honed liner finish. Measured and numerically generated surfaces are simulated and compared. The friction and pressure behaviors for lightly and heavily worn surfaces are compared with experimental data. Moreover, by tuning the worn parameters, the friction effective mean pressure (FMEP) curve can match the experimental data. Finally, the algorithm to numerically generate thermally sprayed liner finish is described. The hydrodynamic and dry contact friction behaviors for generated surfaces are compared with experimental data. Critical topology parameters are tuned and their effects on friction losses are studied. Moreover, the effects of the pores created by the plasma spraying processes on the lubrication behaviors are simulated.<br>by Renze Wang.<br>S.M.
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29

Cherry, Donna J., and John G. Orme. "Vital Few and Useful Many Foster Families From Start to Finish." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/etsu-works/7636.

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The Pareto Principle, also known as the 80–20 rule, is the observation that 20% of input (e.g., workers) produce 80% of the results. Consistent with this principle, previous research has identified a group (20%) of families, the Vital Few, who provide a disproportionate amount of foster care and are more willing to foster children with special needs. The ability to predict the emergence of these families has important implications for recruitment, support and placement stability, as well as longevity of foster families. This study replicated and extended previous research by conducting a follow-up study of 107 families (90% response rate) 17 years after pre-service training. Consistent with previous research we found a small proportion (10%) of families who provide a disproportionate amount of care in terms of length of service and number of children fostered, approved to foster, adopted, and removed at families’ request. At the completion of pre-service training Vital Few families were more likely to have had previous foster parent experience and one or more children in their homes; mothers and fathers in the Vital Few were older, and fathers reported less education. Also, at pre-service training more Vital Few families said they would foster sibling groups (100 vs. 64%), but there were no other differences in terms of willingness to foster children with special needs. This study further validates the utility of the Pareto Principle for understanding foster families and, by extension, has important implications for the well-being and stability of foster children.
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Condie, Kimberly J. "Finish-a-rhyme-story : a rhyme cloze assessment for preschool children /." Diss., CLICK HERE for online access, 2009. http://contentdm.lib.byu.edu/ETD/image/etd2972.pdf.

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Lui, Chun-keung Pierre. "Surface irregularity models in CAD applications : surface finish and tolerance allocation /." Hong Kong : University of Hong Kong, 1988. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19952697.

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Condie, Kimberly Jeanne. "Finish-a-Rhyme-Story: A Rhyme Cloze Assessment for Preschool Children." BYU ScholarsArchive, 2009. https://scholarsarchive.byu.edu/etd/1741.

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Educators need measurement tools to determine phonological awareness in young children. This study investigated the appropriateness of rhyme cloze tasks, referred to as Finish-a-Rhyme-Story items, which were designed to measure preschool and kindergarten children's early rhyme development. The rhyme cloze tasks required children to verbally complete a sentence by filling in a final rhyming word that matched a rhyme pattern highlighted in a short story that was read aloud to them. The task required rhyme awareness as well as comprehension of the language in the story. Twenty-four items were individually administered to preschool (n = 207) and kindergarten (n = 382) children to determine item performance and discriminative power. Rasch analysis indicated that the difficulty level of the items was well matched for the sample indicating that the items were developmentally appropriate for preschool and kindergarten children. Several analyses of variance (ANOVA) compared the performance of preschool and kindergarten children as well as the performance of monolingual English speaking (ENG) children and English Language Learners (ELL) to determine if there were group differences on the rhyme cloze measure. Results also indicated that the items have the ability to discriminate between children with high and low level rhyming ability based on the Rasch model; kindergarten children were more aware of the rhyme component than preschool children and ENG children were more aware than ELL children.
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Doucette, Wendy, and Joanna Anderson. "Boosting Boot Camp: Embedded Librarians Coach Students to Graduation Finish Line!" Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etsu-works/399.

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From its inception in 2012, the Dissertation and Thesis Bootcamp at East Tennessee State University (ETSU) has included a library component. Unfortunately, librarians were used more as computer technicians, assisting students with technological access issues and occasional citation help, than as information specialists. In Spring 2015, the new Graduate Librarian and the Distance Education Librarian proposed significantly expanding the librarian's role in the program by adding targeted workshops to address physical and virtual workspace organization and research strategies. In the exit surveys for Boot camp, students have expressed high ratings and appreciation for these formal library instruction opportunities. Familiarity with the embedded librarians greatly increased the interaction between students and librarians, allowing for timely, point of need interventions during boot camp, as well as continued personal consulatations afterwards. This infographic-based poster will use graphed data, linear progression and photographs to showcase the different function performed by the librarians embedded in bootcamp. It will clearly and systematically demonstrate visually how what began as a teaching research and data management skills improved student ability and confidence and progressed to one-on-one and group sessions. This case study will provide inspiration and guidelines to help others reproduce our success. Links to the content of our workshops will also be available.
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Sager, Benay. "Stereolithography Characterization for Surface Finish Improvement: Inverse Design Methods for Process Planning." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-04092006-155545/.

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Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2006.<br>Dr. David W. Rosen, Committee Chair ; Dr. Farrokh Mistree, Committee Member ; Dr. W. Jack Lackey, Committee Member ; Dr. Cliff Henderson, Committee Member ; Dr. Ali Adibi, Committee Member.
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Palli, Kiran Kumar. "Scheduling DAGs for minimum finish time and power consumption on heterogeneous processors." Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Summer/master's/PALLI_KIRANKUMAR_13.pdf.

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Lawand, Ronald. "Effect of preform fibre distribution on the surface finish of composite panels." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66817.

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Achievement of high class surface finish is important to the high volume automotive industry when using the Resin Transfer Molding (RTM) process for exterior body panels. In this work, the effect of the fibre distribution in F3P preforms on the surface quality of RTM moulded panels was investigated. Taguchi experimental design techniques were employed to design test matrices and an optimization analysis was performed on the fibre preform architecture. The F3P preform fibre distribution was measured by carrying out image analysis of the light intensity transmitted through dry preforms. Test panels were manufactured using a flat plate steel mould mounted on a press. The panel surface quality was measured using the ONDULO non-contact surface measurement system. Fibre density distribution was compared to the measured surface roughness. Predicted surface quality is presented and compared to measured values from the manufactured parts. The results obtained indicate that small variations in preform fibre volume fraction and top veil thickness have no effect on the surface finish of 'Class A' composites parts.<br>Dans l'industrie automobile à haut taux de production, l'obtention d'un excellent fini de surface pour les panneaux extérieurs de carrosserie, fabriqués par le procédé d'injection sur renforts est très important. Dans ce travail, l'effet de la distribution des fibres de préformes F3P sur la qualité de panneaux moulés par le procédé d'injection sur renforts a été étudié. Un plan d'expérience basé sur la méthode de Taguchi a été employé pour concevoir la matrice de tests. L'architecture de la préforme a été aussi optimisée. La distribution des fibres des préformes F3P a été mesurée en performant une analyse d'image sur l'intensité lumineuse transmise à travers la préforme sèche. Des panneaux tests ont été fabriqués sur un moule d'acier monté sur une presse. La qualité de la surface des panneaux a été mesurée par un système de mesure sans contact appelé ONDULO. La distribution de la densité de fibre a été comparée à la mesure de rugosité des surfaces. La prédiction de la qualité des surfaces est présentée et comparée aux valeurs mesurées des panneaux tests. Les résultats obtenus indiquent qu'une petite variation de la fraction volumique de fibre ainsi que de l'épaisseur du voile supérieur n'a pas d'influence sur le fini de surface type A, de pièces composites.
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Dhulipalla, Ajay Krishna. "Effect of surface finish and hard coatings on scuffing of steel discs." Thesis, Cardiff University, 2006. http://orca.cf.ac.uk/56106/.

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The principal purpose of the work described in this thesis was to develop an insight into the scuffing performance of steel discs used to simulate gear tooth contacts under severe conditions of load, sliding and high temperature. Different surface conditions of the discs such as ground, superfinished, ground/hard-coated, and superfinished/ hard-coated were investigated in various combinations and at sliding speeds of up to 16 m/s in order to obtain an understanding of the possible beneficial effect of improved surface finish and the application of hard coatings on scuffing performance under the severe conditions experienced in an aerospace transmission such as a helicopter main rotor gearbox. The lubricant used in all tests was an oil commonly used in aerospace transmissions. It was found that the diamond-like coating (DLC) investigated in this work had the effect of markedly improving the scuffing resistance of the hardened steel substrate. In tests using the ground/coated samples, for example, it was not found possible to produce scuffing within the load and temperature limits of the test rig used (2.0 GPa maximum Hertzian contact pressure or 300 C maximum disc bulk temperature) even at the high sliding speed of 16 m/s. In addition to improving scuffing resistance it was found that the effect of the hard coating was to reduce friction and operating temperatures for a given load/speed combination. Superfinishing of the steel discs also led to a reduction in friction, but did not produce a significant improvement in scuffing resistance. It was found that the combination of ground/hard-coated discs running against ground/uncoated discs produced a remarkable behaviour of the discs' bulk temperatures, which suggests that the hard coating acts as a thermal barrier. Micro-elastohydrodynamic lubrication (micro-EHL) analyses were conducted using surface profiles of discs used in the experimental work. These theoretical simulations demonstrated the very severe lubrication conditions which are present in the experiments. Pressure ripples far in excess of the calculated Hertzian pressure are predicted, and the films generated by hydrodynamic action are extremely thin. Under the most severe conditions transitory direct "dry" contact is predicted.
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Holdstock, Brian P. "The management of surface finish decisions in new product design and development." Thesis, University of Brighton, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263098.

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Zhang, Jishan. "Influence of shot peening and surface finish on the fatigue of gears." Thesis, University of Newcastle Upon Tyne, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413043.

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Medeiros, Brenda Batista Lemos 1970. "Bem-estar e desempenho de suínos criados em sistema "wean to finish"." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/256790.

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Orientador: Daniella Jorge de Moura<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola<br>Made available in DSpace on 2018-08-23T04:20:53Z (GMT). No. of bitstreams: 1 Medeiros_BrendaBatistaLemos_D.pdf: 3219138 bytes, checksum: 90e0adde72fcabc70a0f4008580b3f7c (MD5) Previous issue date: 2013<br>Resumo: O "wean to finish" é um sistema de criação de suínos que ainda é novo no Brasil, e não existem muitos estudos a respeito do tamanho de grupos e área disponível/animal ideal para suínos criados numa mesma instalação, mas acredita-se que serão obtidos bons resultados, principalmente, no que se refere ao bem-estar e o desempenho dos animais. O presente estudo tem como objetivo avaliar o bem-estar e o desempenho de suínos, criados em sistema "wean to finish", em diferentes números de animais/baia e em diferentes fases de vida dos animais. Os tratamentos utilizados foram: T1= avaliados 22 animais e área disponível de 1,12 m2/animal, T2= 24 animais e área disponível de 1,02 m2/animal, T3= 26 animais e área disponível de 0,94 m2/animal, T4= 28 animais e área disponível de 0,88 m2/animal e T5= 30 animais e área disponível de 0,82 m2/animal. Foram avaliados o ambiente térmico (temperatura, umidade relativa e velocidade do ar) e foi calculado o índice de temperatura e umidade; o ambiente aéreo (gases - NH3 e CO2). Foi utilizada a técnica de geoestatística para monitorar a homogeneidade da distribuição das variáveis térmicas e aéreas da instalação; o ambiente acústico; as variáveis comportamentais; temperatura superficial da pele; os níveis de cortisol salivar, monitoria sanitária (índice de tosse e espirro e escore de consistência de fezes), frequência respiratória, escore de lesão de pele e o desempenho dos animais (peso inicial e final, ganho de peso no período, ganho de peso médio diário e conversão alimentar). O experimento foi conduzido no delineamento inteiramente casualizado, Teste de Tukey (P<0,05) para a comparação entre médias, pelo programa estatístico SAEG e para as análises não - paramétricas o Teste de Kruskall - Wallis (P<0,05), utilizado o programa estatístico Minitab 15. Os resultados de temperatura e umidade do ar estavam dentro do preconizado como adequado, conforme cada fase de criação estudada. As concentrações dos gases e a velocidade do ar estavam heterogêneas, devido o tipo de ventilação natural, dificultando o controle na instalação. Isso também foi observado em alguns mapas de geoestatística, sendo que apresentaram particularidades para serem justificados. A distribuição dos níveis de pressão sonora em todos os tratamentos de todas as fases estavam abaixo de 85 dB (A), considerado bom. Na avaliação dos comportamentos dos suínos foi nítida a maior frequência em todos os tratamentos dos comportamentos de fuçar e os animais permanecerem deitados e dormindo na fase 1. Já na fase 4, o comportamento que se destacou foi dos animais ficarem deitados. As temperaturas superficiais da pele e a monitoria fisiológica e sanitária também estavam de acordo com a literatura, levando em consideração os horários avaliados e a fase de criação. Para o desempenho foi observado que os melhores resultados foram obtidos no T5. De modo geral, pode-se concluir que os resultados encontrados tanto da monitoria do bem-estar dos animais como de desempenho se complementam, em todos os tratamentos e nas diferentes fases de criação. Como na maioria dos tratamentos e fases de criação, os animais estavam em bem estar, consequentemente verificaram-se no desempenho dos animais ganhos satisfatórios ou até superiores aos esperados<br>Abstract: The "wean to finish" system is a new way to raise piglets in Brazil. Studies about ideal group size or ideal stocking density for raising these animals in the same building are rarely seen in the literature. Nothing is known about the size of the piglets group or ideal densities to raise the piglets in relation to their performance and welfare. This study has the objective to evaluate the welfare and performance of piglets raised in system wean to finish in different group and in different raising phases. The treatments consist of different number of animals and space allowance per pig: T1 = 22 animals (1.12 m2/pig), T2= 24 animals (1.02 m2/pig), T3= 26 animals (0.94 m2/pig) T4= 28 animals (0.88 m2/pig) e T5= 30 animals (0.82 m2/pig). The environmental variables of the buildings and outside them were evaluated such as: temperature, relative humidity and air velocity the THI index was calculated. The NH3 and CO2 were collected. The geostatistics technique was used to study the homogeneity of the environmental conditions. The sound pressure of the buildings was also evaluated, such as the behavior of the piglets, the surfaces temperatures, the cortisol salivar levels, the health status of the piglets (index coughing and sneezing and consistency of stool), respiratory frequency, frequency of skin injuries and their performance (initial and final weight, weight gain and feed conversion). The treatments was assigned in a completely randomized experimental design, a Tukey test (P <0.05) was performing for means comparison of each treatment using a statistical software for analysis (SAEG). For non-parametric analysis was used Kruskall - Wallis test (P <0.05) and the analysis was performed in the statistical software Minitab 15. The results of temperature and relative humidity of the air were within the expected data by the literature recommendations, in all phases of the piglets. The air velocity and the gases concentration showed an heterogeneous pattern in standard statistics results and in geostatistics, as expected in natural ventilated buildings. The sound pressure levels in all treatments and studied phases were below the recommended by the literature, 85 dB (A). For pig behavioral analysis, pigs spent more time rooting and lying down during phase 1. Lying down was also more frequent during phase 4. Analyzing the piglets behavior, it was observed that some behaviors showed up in a greater frequency depend on the piglet's age. The skin surface temperature and the health status were within the limits recommended by the literature. The results also showed that the best results were obtained in treatment 5, the group of the higher number of animals. Was concluded that all the treatments had the same welfare status, but the higher number of animals presented the best results of performance<br>Doutorado<br>Construções Rurais e Ambiencia<br>Doutora em Engenharia Agrícola
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41

Yavuz, Nihat. "Development of finish cooking methods for producing low-fat breaded cheese sticks." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/76911.

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Deep-fat fried foods have unique characteristics that attract consumers but their high fat contents must be reduced in order to provide healthy foods along with high quality. In the first part of this study, effects of frying temperature and frying pressure on the quality of partially fried breaded cheese sticks were determined. In the second part, far infrared finish cooking methods were compared to traditional deep-fat frying in terms of product quality. Increasing frying temperature significantly (P<0.05) reduced fat and moisture contents of the samples and increased crispness and exterior hardness. Pressure did not affect crust fat content of the samples significantly (P>0.05). However, increasing frying pressure resulted in the samples having higher moisture contents. Crispness and exterior hardness of pressure-fried cheese sticks were lower than traditional deep-fat fried samples. Increasing frying temperature and pressure resulted in darker sample color. Par-fried far-infrared finish cooked cheese sticks had lower fat contents than deep-fat fried cheese sticks had. Moisture contents of far-infrared finish-cooked samples were higher than those of deep-fat fried samples. Far-infrared finish cooking significantly (P<0.05) reduced crispness and exterior hardness of breaded cheese sticks.<br>Master of Science
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Rodomsky, Caitlyn Marie. "Surface Finish on A356-T6 Cast Parts using Additive Manufactured Sand Molds." Youngstown State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1526030093287334.

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43

Robertson, Troy A. "A Case Study of Multiple-Use Finish Electrodes for Die-Sinking EDM." TopSCHOLAR®, 2015. https://digitalcommons.wku.edu/theses/1462.

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This study examines the use of one finishing electrode to finish multiple dies without remachining the electrode. The multiple-use electrode finishing experiment in this study addresses technology in the die-forging industry. Methods of manufacturing spherical straight bevel forge gear dies have relied on die-sinking Electrical Discharge Machining (EDM) practices that showed great potential for advancement. The focus of this study is solely on the improvements of electrode use in EDM finishing-processes. The surface finish quality itself is not an area of concern other than maintaining that it does not diminish. The focused concern is maximizing the process by using one electrode unmodified for multiple-finishing operations. The objective for improvement is utilization of one finishing electrode used multiple times rather than only one finishing electrode per die. Utilizing a Coordinate Measuring Machine (CMM), the inspection of specific locations on the finishing electrode reveals the repeatability and accuracy of use for one finishing electrode for six gear forging-dies. Initial experimentation validates the capabilities to finish four dies accurately in two separate die configurations with one electrode. To accomplish finishing the four initial dies, a die-sinking EDM machine that possesses a large enough working envelope was included in the process. The transition of using graphite electrode materials in place of brass for finishing multiple dies aids in reducing what was a total eight-hour process time into a four-hour process time.A machine with a working envelope large enough for only setting up one die to be EDM machined generated the eight-hour process time. The researcher achieved the eight-hour process time by replacing brass electrodes in the roughing stages with graphite electrodes. The extent to which one finish electrode can finish a sample set of six complete dies with one electrode is studied. Data is extrapolated from the deviation of absolute locations on a three-dimensional solid model compared to the multiple-use finishing electrode. Specific locations inspected on the electrode conclude the study efforts with results revealing that the maximum repeated use of an electrode is seven uses.
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Robb, Niall Angus. "The Magic Surface: Wonder, Transfromation and Imagination in Contemporary Art." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/16210.

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The aim of this research paper is to interrogate the term magic and to ascertain its appropriateness as a descriptor for the captivation I feel in response to certain everyday material expression, which I explore in my own work, and observe in the artistic practice of other artists. Through engaging with the theories and writing of scientific disciplines such as mineralogy and interfacial science, along with the writings of natural philosophy and natural magic I test whether I can separate the term magic from its familiar supernatural incarnation, leading to a reconsidering and expanding of what magic might encompass, and potentially, make a case for the magical quality of surface materiality and phenomena. In my research paper I survey different aspects and cases of what I identify as ‘everyday magic’. In the first chapter I begin by concentrating on the lustre and finish of reflective surfaces and locate a linage of artists, writers and natural philosophers who are also transfixed by the wondrous quality of lustrous surfaces. In chapter two I focus on material transformations that occur at the interfacial region between surfaces, and in chapter three I look at the use of surface applications such as gilding and veneers, and the ways in which they invite a kind of imaginative perception. Throughout the paper I survey a number of contemporary artists and relate their works as well as my own to the various ideas centred around surface and magic outlined in each chapter.
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Skold, Martin. "Winning a race with no finish line : assessing the strategy of interstate competition." Thesis, University of St Andrews, 2018. http://hdl.handle.net/10023/12985.

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This dissertation offers a framework for understanding the strategies of states engaged in competition for regional hegemony. Although international relations literature refers extensively to such competition and obliquely to states' strategies, to date little has been done to show how states' strategies in such competition may be analyzed. Drawing on a variety of strategic literature, this dissertation synthesizes a theoretical approach to analyzing the strategies of states engaged in regional security competition. Employing insights drawn from business strategy, this dissertation argues for an essentially asymmetric understanding of fundamental policy goals for states engaged in competition for regional hegemony, with one state attempting to maintain a dominant position and another attempting, by focusing limited resources, to supplant it. The competition is understood metaphorically (based on an anecdote from the end of the Cold War) as a “race with no finish line,” with the reigning hegemon attempting to extend the race and the challenger attempting to create a finish line and cross it. With homage to realism, liberalism, and constructivism, possible state goals are categorized as belonging to three realms: security, welfare, and intangible goals. These are used as metrics for a state's success or failure in any given competitive scenario, as well as the resources at its disposal. Drawing on military strategic literature, this thesis then applies decision-cycle analysis to state competitive behavior. The conclusions from this analysis are then synthesized into a framework for analysis of similar regional competitive scenarios, the first such framework yet devised for such purposes. A case study: the “Dreadnought Race” between Britain and Germany prior to World War One, is then examined, in which states' performance is analyzed in the competitive scenario in light of the above strategic precepts.
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Oosthuizen, G. A. "Innovative cutting materials for finish shoulder milling Ti-6A1-4V aero-engine alloys." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/1561.

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Thesis (MScEng (Industrial Engineering))--University of Stellenbosch, 2009.<br>The titanium alloys have found wide application in the aerospace, biomedical and automotive industries. Soaring fuel prices and environmental concerns are the fundamental drivers that intensify the demand situation for titanium. From a machining viewpoint, one of the challenges companies face, is achieving high material removal rates while maintaining the form and function of the part. The ultimate aim for a machining business remains to make parts quickly. Conventional cutting speeds range from 30 to 100 m/min in the machining of Ti-6Al-4V. Milling this alloy faster however is challenging. Although titanium is becoming a material of choice, many of the same qualities that enhance titanium‟s appeal for most applications also contribute to its being one of the most difficult materials to machine. The author explored the potential for Polycrystalline diamond (PCD) inserts in high speed milling of Ti-6Al-4V, by trying to understand the fundamental causes of tool failure. The objective was to achieve an order of magnitude increase in tool life, while machining at high speed, simply by reducing some of the failure mechanisms through different cutting strategies. Tool wear is described as a thermo-mechanical high-cycle fatigue phenomenon. The capability of a higher material removal per tool life is achieved in the case of PCD inserts compared to Tungsten carbide (WC). The average surface roughness produced was relatively low. The collected chips were also analyzed. The work demonstrated progress over the performance reported in current literature. The work confirms that there is a region where a sufficiently high temperature in the cutting zone may contribute to extended tool life, provided that the tool material can withstand these extreme conditions.
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McBride, Ethan. "Utilizing Rapid Mass Spectrometry Techniques to Profile Illicit Drugs from Start to Finish." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1248455/.

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The increasingly complex world of illicit chemistry has created a need for rapid, selective means of determining the threat posed by new drugs as they are encountered by law enforcement personnel. To streamline this process, the entirety of the problem, from the production of illicit drugs all the way to the final analysis have been investigated. A series of N-alkylated phenethylamine analogues were synthesized in a shotgun method and subjected to direct-infusion analysis. A range of products were detected without the need for time-consuming purification steps, which was extended to novel pharmacological and receptor-binding assays where mass spectrometry is used as a detector. This direct-infusion technique was also applied to studies of methamphetamine and fentanyl production to preemptively determine improvements to common reaction conditions and explore the origins of common impurities. The ability to utilize these rapid techniques directly from the fume hood has also been critically reviewed to highlight gaps in current research and opportunities for improvement. When combined, these studies seek to provide a means for rapid, simplified analysis of illicit drugs to improve the quality of data and dramatically increase throughput.
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Rudolph, Sadie Rae. "Crisis at the Finish Line: A Thematic Analysis of Instructing Information via Twitter." Thesis, North Dakota State University, 2014. https://hdl.handle.net/10365/27427.

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This study expands current crisis communication research by exploring the communication of instructing information via Twitter. Drawing from the internalization, explanation, and action components of Sellnow & Sellnow's (2013) IDEA Model, this study analyzes live tweets posted by the Boston Police Department during the 2013 Boston Marathon bombing crisis. Examining Tweets posted during a crisis allows us to better understand what constitutes useful, valuable instructing information that can be communicated via social media in real time. Further, scholars have just begun exploring social media's implications for crisis communication. This study extends the IDEA Model to reach crisis communication and social media. Findings also indicate the three components of the IDEA Model are valuable topics to consider when communicating instructing information via Twitter. Finally, we learn that Twitter's 140 character limit does not impede the social media platform as a vehicle to communicate instructing information during a crisis.
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Kulkarni, Nitin Madhukar 1957. "Modelling of end milling operation to predict the achievable surface finish and tolerance." Thesis, The University of Arizona, 1993. http://hdl.handle.net/10150/278323.

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With increasing necessity to integrate CAD and CAM, it is necessary to develop more accurate models for predicting the performance of manufacturing processes. Conventionally, process parameters are selected by the process planner based on his experience. For CAD-CAM integration to be meaningful, it should be possible to arrive at the same decisions using computer models for that process. The end milling process is selected for such modeling. The parameters considered are process variables, cutter geometry, cutter material properties, workpiece material properties, workpiece geometry and location and properties of inclusions (if any) in the material. Dynamic Model for end milling is developed and successive iterations are performed to arrive at the speed and feed required to generate a given surface finish and tolerance.
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Mohd, Alias Bin. "The effect of injection mould surface finish on the ejection of plastics product." Thesis, Edinburgh Napier University, 2014. http://researchrepository.napier.ac.uk/Output/7571.

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The development and fabrication injection of moulding tools is complex and demands highly skilled personal. The research aim is to study the effect of surface roughness on mould filling and the ejection of parts for amorphous and semicrystalline polymers. This study is to simulate and analyse polymers used and investigates the ejection force needed for different selected polymer resins for a series of cavity and core inserts with different surface roughnesses. Mould filling and comparison studies for polymers used also were carried out. Three common thermoplastics polymers were used for the cylindrical part: two amorphous thermoplastics: high impact polystyrene and an acrylonitrile butadiene styrene and a semi-crystalline polyamide. These three thermoplastics were selected due to these polymers are engineering materials being widely used in automotive parts, in the casing of household products and in gears. Apart from that there are different processing conditions for an amorphous and crystalline thermoplastic in terms of melting temperature, injection pressure, packing pressure and cooling times which are considered in this study. A two-cavity prototype tool for cylindrically shaped components was fabricated with variations in wall thickness by using a series of core inserts each with a different surface roughness. The part was constructed using CAD software and simulated in Autodesk Moldflow Insight 2010-R2 (AMI 2010-R2) in order to carry out the simulation works to obtain the required processing parameters for the injection moulding process. The application of simulation software packages for mould design and injection moulding process are vital in order to optimise the part quality and satisfy the market needs. For amorphous thermoplastics there is no melting point in terms of physical properties and having a high toughness due to butadiene chain present, in this case both for high impact polystyrene and an acrylonitrile butadiene styrene. Since polyamide has a viscosity lower than these two amorphous thermoplastics, the processing conditions and pressure will be different which can be identified through the melt flow rate of the resin. Polyamide also has a higher density which is 1.14 g/cm3 compared with high impact polystyrene and an acrylonitrile butadiene styrene which were 1.04 g/cm3 and 1.04 g/cm3 respectively. The study concludes that polyamide resin requires a shorter cavity filling time and less pressure compared with an acrylonitrile butadiene styrene resin. Polyamide also requires high ejection forces due to surface texture generated as compared with high impact polystyrene and an acrylonitrile butadiene styrene. The mathematical model results for the ejection force closely agree with the experimental data for the three materials used.
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