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Dissertations / Theses on the topic 'Packing, 1953'

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Published: 26 July 2024

Last updated: 28 July 2024

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1

Qiao, Wenxin. "An algorithm for crew scheduling problem with bin packing features." College Park, Md.: University of Maryland, 2008. http://hdl.handle.net/1903/8818.

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Thesis (M.S.) -- University of Maryland, College Park, 2008.
Thesis research directed by: Dept. of Civil and Environmental Engineering . Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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2

Hodges, Adam J. "The Industrial Workers of the World and the Oregon Packing Company Strike of July 1913." PDXScholar, 1996. https://pdxscholar.library.pdx.edu/open_access_etds/5290.

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This study builds upon the notion of a Wobbly 'sensibility' established by Salvatore Salemo and relates it to John Townsend's analysis of conflict between that group's adherents and western Progressives. The latter scholar, by concentrating on middle-class economic anxiety, failed to deal with the virtual unanimity of opposition to the IWW in western towns. Salerno's assertion that a 'sensibility' within the IWW was more binding than ideology raises the possibility that individuals and organizations of varying beliefs could be similarly united within a single cultural sphere with a directed purpose. Such an analysis can apply to factions of Progressivism and radical labor alike. The first chapter begins with a brief account of the historical context, origins, and organizational history of the IWW. This second section discusses the internal dynamic of the IWW, particularly the relationship between the leadership and rank-and-file. The third section briefly explicates the purpose of the thesis. The second chapter recounts important episodes of IWW activity that occurred on the West Coast concurrently with the strike in order to set the regional context of the conflict. The third chapter begins with a section discussing the development of Progressivism and urbanization in a national context and emphasizes cultural conflict. The second section is a brief survey of Progressive era Portland, Oregon. The third and fourth sections discuss the cultural repercussions of women entering industrial life on a mass scale. The chapter concludes with a brief demographic survey of cannery women. The fourth chapter is a chronological narrative of the strike, and is followed by a concluding fifth chapter of analysis. The first section suggests a Progressive 'sensibility' arrayed specifically against radical labor, while the next section discusses a radical 'sensibility' hostile to varying aspects of the cultural norms of Progressivism. The final section asserts the importance of analysis of cultural values, above even notions of class, in addition to economic analysis in order to obtain a more useful synthesis of Wobbly conflict than now exists.

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3

Loh, Kok-Hua. "Weight annealing heuristics for solving bin packing and other combinatorial optimization problems concepts, algorithms and computational results /." College Park, Md. : University of Maryland, 2006. http://hdl.handle.net/1903/3980.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2006.
Thesis research directed by: Business and Management. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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4

Valentine, Theresa Michelle. "Fabrication and packaging optimization for polymer-based microfluidics." College Park, Md. : University of Maryland, 2004. http://hdl.handle.net/1903/1412.

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Thesis (M.S.) -- University of Maryland, College Park, 2004.
Thesis research directed by: Dept. of Material Science and Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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5

DiSabatino, Ronald J. "Packaging of an iron-gallium nanowire acoustic sensor." College Park, Md. : University of Maryland, 2006. http://hdl.handle.net/1903/3765.

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Thesis (M.S.) -- University of Maryland, College Park, 2006.
Thesis research directed by: Dept. of Mechanical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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6

Fung, Kar Ho Herman. "Biophysical and structural characterisation of the bacteriophage HK97 DNA packaging system." Thesis, University of York, 2017. http://etheses.whiterose.ac.uk/19153/.

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DNA packaging is a key step in the assembly of dsDNA viruses such as tailed bacteriophages and herpes viruses, whereby empty capsids are filled with a copy of the viral genome. The task is mediated by a DNA packaging motor, made of terminase proteins interacting with the portal vertex of a capsid. Cos phages use a defined signal recognised by the terminase machinery to mark the beginning and end of their genome in newly replicated, concatemeric DNA. For cos phages, the structures of assemblies that initiate, perform and terminate packaging are unknown. The structures of individual terminase proteins are also unknown. To further elucidate the mechanisms of DNA packaging in cos phages, a new packaging motor was assembled in vitro based on Escherichia coli bacteriophage HK97. Structural, biochemical and biophysical evidence suggests that cos, pac and φ29-like motors share a common mechanism for DNA translocation, despite their different initiation and termination behaviours.

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7

Deeds, Michael Andrew. "Qualification of metallized optical fiber connections for chip-level MEMS packaging." College Park, Md. : University of Maryland, 2004. http://hdl.handle.net/1903/1941.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2004.
Thesis research directed by: Mechanical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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8

Hung, Chi-Wei. "RNA packaging and gene delivery using Tobacco mosaic virus pseudo virions." College Park, Md. : University of Maryland, 2008. http://hdl.handle.net/1903/8175.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2008.
Thesis research directed by: Dept. of Chemical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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9

Jain, Rupal. "Design and packaging of an iron-gallium (Galfenol) nanowire acoustic sensor for underwater applications." College Park, Md.: University of Maryland, 2007. http://hdl.handle.net/1903/7605.

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Thesis (M.S.) -- University of Maryland, College Park, 2007.
Thesis research directed by: Dept. of Mechanical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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10

Grau, Peter F. "Analysis of high density interconnect alternatives in multichip module packaging using the analytic hierarchy process." Master's thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-03172010-020042/.

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11

Bello, Barros Rosario. "Labor processes within a commodity system : a comparative study of workers in apple packing houses /." Diss., This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-06062008-165840/.

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12

Lee, Jiwon. "Factors Affecting the Oxidative Stability of Foods-Interesterified Soybean Oil with High Intensity Ultrasound Treatment and Trona Mineral in Packaged Fresh Meats." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/1963.

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Oxidation in oils and muscle foods has been studied for many years to understand its mechanism and furthermore to control and manage it. A series of different processing steps or different packaging techniques can alter oxidative stability. The objective of the current study was to examine oxidative stability of processed oil and to evaluate the effect of carbon dioxide generating mineral on quality of beef and chicken under different storage conditions. In Study 1 (Chapter 3), the effect of ultrasound on oxidative stability of interesterified soybean oil and soybean oil was examined. Sonication did not affect oxidation rate until the oils were highly oxidized. Sonicated interesterified soybean oil exhibited a slightly but significantly lower oxidation rate than non-sonicated oil during long-term storage, while sonication of non-interesterified soybean oil led to a significantly higher oxidation rate than in non-sonicated soybean oil after induction period. In Study 2 (Chapter 4), the feasibility of trona as a CO2 producing product in a model system and in modified atmosphere packaging of beef steaks was investigated. Trona was able to generate more carbon dioxide than sodium bicarbonate with salicylic acid in model systems. Steaks stored with trona/acid mixture had similar color stability and delayed lipid oxidation compared to those stored in high oxygen packaging. In Study 3 (Chapter 5), the effect of packets containing trona and acid placed in a simulated self serve retail case and closed butcher case on the quality of ground beef was studied. Mineral packets did not affect color, lipid oxidation, or microbial growth of ground beef since there was not a sufficient amount of moisture to generate CO2 effectively. In Study 4 (Chapter 6), the quality of chicken breast/thigh portions stored with mineral packets was compared to those without mineral packets during extended storage, and mineral packets had an antimicrobial effect of CO2 only on day 15. In conclusion, high intensity ultrasound did not affect the rate of oxidation of oil until the oil had already become noticeably rancid, and mineral packets containing trona and an acid with low water solubility can be used as CO2 generating sachet if sufficient moisture is given.

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13

Mooers, Blaine H. M. "Controlling DNA packing in crystals." Thesis, 1997. http://hdl.handle.net/1957/34392.

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14

Sundberg, Garth. "Model extraction of a paddle in plastic surface-mount RF-IC packages." Thesis, 2000. http://hdl.handle.net/1957/33163.

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Plastic packaging is a cost-effective solution for housing RF and microwave integrated circuits in low cost communication devices. While enabling low cost packaging of integrated circuits, plastic packages including the circuit ground patch (paddle) inside the package can have a significant parasitic effect on circuit performance. The purpose of this thesis is to develop accurate broadband models and associated extraction procedures for the paddle in plastic surface-mount RF-IC packages. Availability of package models will help the RF design engineer to include the packaging effects directly during the circuit design phase. In this thesis a new lumped element equivalent circuit model for the ground paddle inside a plastic package is presented. The ground paddle is characterized by planar full-wave electromagnetic simulation as well as by measurement of an equivalent paddle test structure. To de-embed the effects of the measurement probes, several test structures are designed. The equivalent circuit parameters for the paddle in a general symmetric 2n-pin plastic package are extracted from a set of measured or simulated two-port scattering parameters. To illustrate the modeling approach, the response of the paddle model for a four-pin and eight-pin plastic package is shown and found to be in good agreement with the measured and simulated data over a broad frequency range extending beyond 5 GHz. Finally, the extraction of the equivalent circuit model of the paddle through the package lead-frame is demonstrated.
Graduation date: 2000

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15

Kagawa, Todd F. "Studies on the hydrophobic effect and its contribution to the stability, crystallization, and helix packing of Z-DNA." Thesis, 1994. http://hdl.handle.net/1957/35299.

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The studies presented here use the B- to Z-DNA transition and Z-DNA crystallization as model systems to determine the contribution of solvent interactions to macromolecular structures. The substituent groups of naturally occurring and modified nucleotide bases affect the hydration and thus the stability of right-handed B-DNA and left-handed Z-DNA. The free energy for alternating pyrimidine-purine sequences in the B- and Z-conformations are quantitated as solvent free energies (SFE) from their solvent-accessible surfaces. The effect of methylation of the C5 carbon of pyrimidine bases on the stability of Z-DNA was analyzed in comparisons of d(TA) versus d(UA) dinucleotides. In the minor groove, the N2 amino group of purine bases was examined by comparing the stability of d(CG) versus d(CI), and d(TA) versus d(TA') dinucleotides as Z-DNA. These comparisons correctly accounted for the observed effects of the major and minor groove substituent groups on the relative stability of Z-DNA. These predictions were confirmed by comparing the amount of salt required to crystallize various hexanucleotides as Z-DNA. The relative contribution of solvent and steric interactions in DNA assembly were studied crystallographically using an asymmetric hexanucleotide which assumes two discrete and discernible orientations in the crystal lattice. How this sequence orients in the lattice is a direct measure of the DNA-DNA interactions at the surface of the crystal. These interaction free energies were directly correlated with differences in solvation for 5 sequences where there was effectively no differences in steric interactions for the two orientations. In the singular case where a large steric clash was expected, the orientation was in fact determined by this interaction. The comparisons indicate that both solvent and van der Waals interactions are significant in DNA assembly with van der Waa ls interactions dominating in situations with large steric interactions. The analyses of the B- to Z-DNA transition and Z-DNA crystallization based on SFEs support the significance of solvent interactions in determining the structure and assembly of macromolecules.
Graduation date: 1995

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16

Adams, Patrick Guy. "A numerical approach to Tamme's problem in euclidean n-space." Thesis, 1997. http://hdl.handle.net/1957/33911.

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17

Tello-Lopez, Edgar Eduardo. "Improved moisture permeability determinations for packaging films and food coatings." Thesis, 1994. http://hdl.handle.net/1957/27233.

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Equipment and procedures for the rapid measurement of the water vapor permeability of polymer films and food coatings has been evaluated. The method uses an electronic sensor to measure the concentration increase in water vapor diffusing through a film into a chamber of known volume. Air of known humidity is passed over each side of the film to establish a desired equilibrium relative humidity differential prior to each test. Experimental results showed that moisture vapor transmission rates of polymer packaging films and edible coatings could be determined in a range from 0.25 to 12 hours instead of the usual 24 hour period required by existing tests. Permeance values for Teflon, high density polyethylene (HDPE), polyethylene terephtalate (PET) and three coating materials were measured at relative humidity differentials between 0 - 100% and temperatures between 5 and 30°C. Results were found to be similar to values reported in the literature using standard measurement methods. This method allows the measurement of film and coating permeance values at temperature and relative humidity values close to actual food storage conditions.
Graduation date: 1994

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18

Moggia-Lucchini, Claudia E. "Storage quality of fresh blueberry and blackberry varieties and evaluation of modified atmosphere packaging /." 1990. http://hdl.handle.net/1957/9202.

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19

Kirtley, Sidney A. "Use of contact angle analysis for the measurement of the relative hydrophilicity of food contact surfaces." Thesis, 1991. http://hdl.handle.net/1957/27312.

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20

Jorgensen, Emily M. "Effects of closure type on consumers' perception of wine quality." Thesis, 2004. http://hdl.handle.net/1957/26452.

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Natural corks have long been used as wine closures. However, they are associated with causing multiple adverse effects to the wine they are attempting to preserve. Alternative closures such as synthetic corks and screw caps were developed in order to reduce and/or eliminate these problems. However, the major cause of concern regarding these closures is of consumers' acceptance. The effect of how three types of closures (Natural Cork, Synthetic Cork and Screw Cap) affected wine consumers' perceptions of the quality of wine was examined in this study. This project was divided into two experiments. The first experiment determined if frequent wine consumers could detect sensorial differences between the three closure types. The second experiment ascertained if and how regular wine consumers' perceptions were altered based on the type of closure with which the wine samples were bottled. It was determined that the wine consumers could not significantly detect a difference between any of the three closure type samples based only on sensory stimuli. The results from the second experiment found for the Chardonnay samples, the knowledge that the wine samples came from a natural cork or a synthetic cork did not significantly affect the liking, quality or purchase intent scores. However, when the panelists knew that the sample was bottled with a screw cap, they thought it was of lower quality, were less willing to buy a wine like the sample and they lowered the price they were willing to pay. For the Merlot samples, knowledge that the sample came from a natural cork caused the wine consumers to significantly increase both their opinions of the quality of the wine and the amount they were willing to pay for the wine. When they knew that the sample was bottled with a screw cap, they reduced the price they would pay for the wine.
Graduation date: 2005

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21

Santos, Ângelo Emanuel Neves dos. "Design and simulation of a smart bottle with fill-level sensing based on oxide TFT technology." Master's thesis, 2016. http://hdl.handle.net/10362/19593.

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Packaging is an important element responsible for brand growth and one of the main rea-sons for producers to gain competitive advantages through technological innovation. In this re-gard, the aim of this work is to design a fully autonomous electronic system for a smart bottle packaging, being integrated in a European project named ROLL-OUT. The desired application for the smart bottle is to act as a fill-level sensor system in order to determine the liquid content level that exists inside an opaque bottle, so the consumer can exactly know the remaining quantity of the product inside. An in-house amorphous indium–gallium–zinc oxide thin-film transistor (a-IGZO TFT) model, previously developed, was used for circuit designing purposes. This model was based in an artificial neural network (ANN) equivalent circuit approach. Taking into account that only n-type oxide TFTs were used, plenty of electronic building-blocks have been designed: clock generator, non-overlapping phase generator, a capacitance-to-voltage converter and a comparator. As it was demonstrated by electrical simulations, it has been achieved good functionality for each block, having a final system with a power dissipation of 2.3 mW (VDD=10 V) not considering the clock generator. Four printed circuit boards (PCBs) have been also designed in order to help in the testing phase. Mask layouts were already designed and are currently in fabrication, foreseeing a suc-cessful circuit fabrication, and a major step towards the design and integration of complex trans-ducer systems using oxide TFTs technology.

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