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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

The impact of a clear versus opaque personal protective face mask on pediatric dental patients

Powers, Nancy A. January 1997 (has links)
Thesis (Ph. D.)--Pacific Graduate School of Psychology, 1997. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
32

The social functions of selected Nigerian masks and Hausa wall decorations implications for contemporary Nigerian education /

Fatuyi, Rufus Boboye. January 1900 (has links)
Thesis--University of Wisconsin--Madison. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 179-189).
33

Distortion in conformable masks for evanescent near field optical lithography : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering in Electrical and Computer Engineering, University of Canterbury, Christchurch, New Zealand /

Wright, A. J. January 1900 (has links)
Thesis (M.E.)--University of Canterbury, 2007. / Typescript (photocopy). "March 2007." Includes bibliographical references (p. 123-127). Also available via the World Wide Web.
34

Masks and Sartre's Imaginary masked performance and the imaging consciousness /

Tims, W. Keith January 2007 (has links)
Thesis (Ph. D.)--Georgia State University, 2007. / Title from file title page. Greg Smith, committee chair; Angelo Restivo, Gayle Austin, Shirlene Holmes, Thomas Flynn, Raphael Miller, committee members. Electronic text (252 p. : ill. (some col.)) : digital, PDF file. Description based on contents viewed Oct. 12, 2007. Includes bibliographical references.
35

Embodying topeng : gender, training and intercultural encounters

Strawson, Tiffany January 2016 (has links)
This research centres on the Balinese performance tradition known as topeng which translates as Balinese masked dance-drama. In Bali this genre is performed traditionally in spaces reserved for religious ceremonies. The research questions the extent to which, and how, it may be possible for a non-Balinese person to embody a culturally coded, sacred object (the mask) and how a woman is able to make meaning and express herself within a genre which is traditionally the preserve of men. The research has therefore sought to develop an individual and intercultural approach to both the design of new masks and their performance. The thesis critiques modes of cultural understanding in relation to notions of balance, based on colonial and dualistic trajectories between Bali and the UK. Alternative modes of exchange explore in-between and hybrid space that is informed by Lo and Gilbert’s dynamic model of intercultural practice which they visualise as a ‘spinning disc held by an elastic band’ (Gilbert and Lo 2002: 45). The key issues explored are notions of training; the relocation of ritual and the cultural specificities of ‘home’; mask-making and design; non-Balinese stories on which to base alternative performances of topeng, ones that more strongly position female characters; and finally the embodiment of Balinese masks from a traditional and also a somatic perspective. The practical form the research takes is through making masks and devising performances, the outcomes of which form a part of the thesis. The thesis both discusses and practically demonstrates how particular modes of embodiment, for instance cakra work, somatics and experiential anatomy may serve as strategies to communicate to a Western perspective how to bring ‘life’ to the mask, how to make it ‘work’ from a Balinese position and how these modes can assist in the process of intercultural (self) translation.
36

A Groundhog Moment: Examination of a Pivotal Emotional Singularity

Townsend, Thomas 01 February 2019 (has links)
In this article, the author dissects and refracts a single, defining moment in his life using autoethnography and the lenses of specific communication and social theories. The author mines the moment in first, second, and third person to uncover the different responses to overwhelming emotions ranging from the noble to the shameful in response to his father’s “coming out of the closet.” A torrent of emotion took the author by surprise and is the total moment of his analysis in this article. The author scrutinizes the multiple ways in which this moment was a release, a turning point, an ending, a beginning, bittersweet, hateful and hate filled, selfish, guilt ridden, and loving. Through multiple retellings of the event, like the film Groundhog Day, the author presents the moment in different narrative formats, from multiple perspectives, with relevant quotations and passages to thoroughly dissect the emotional layers.
37

Vibrational Characteristics of Dummy Headforms

Dingelstedt, Kristin J. 31 May 2024 (has links)
The Hybrid III and NOCSAE headforms are two headforms used in impact testing, though their vibrational characteristics are not well understood. They may have different kinematic responses in various impact scenarios if the impact excites any of their natural frequencies; resonance is especially likely to occur in short-duration impacts with a wider frequency spectrum. The same impact on two headforms that perform similarly in blunt impacts can be much different in shorter-duration projectile impacts due to the vibrational responses. The research presented in this thesis had three objectives: to identify the natural frequencies of the Hybrid III and NOCSAE headforms and compare them with published human head values to determine which has a more biofidelic vibrational response; to quantify the frequency response of different baseball catcher's masks and assess their abilities to limit vibrations transferred to the headforms; and to compare kinematic and frequency responses between headforms in different impact scenarios (high-speed, low-mass projectile impacts vs. low-speed, high-mass pendulum impacts) and see how they are affected by various types of head protection. The results show the importance of considering frequency content in impact testing, suggesting that the NOCSAE headform may be more biofidelic in short-duration impacts since its natural frequencies better align with those seen in the human head. The catcher's masks experienced greater vibrational responses than the headforms, but since the NOCSAE's first natural frequency falls within the bandwidth being excited, resonance was seen in this headform's acceleration responses for the projectile baseball impacts. Lastly, while both headforms had higher peak linear accelerations (PLAs) from the short-duration projectile impacts than the pendulum impacts, the projectile impacts caused high frequencies to be excited in the NOCSAE headform, while only exciting low frequencies in the Hybrid III. These results may not be as relevant for long-duration loadings, as indicated by the similar responses between headforms for both the pendulum and helmeted projectile impacts. However, when a wide range of frequencies are being excited with short-duration impacts, these results are important to consider, since natural frequency excitation can influence head injury risk due to higher accelerations. / Master of Science / The Hybrid III and NOCSAE headforms are dummy headforms used in impact testing, but their vibrational characteristics are poorly understood. They may perform differently in certain loading environments due to structural differences; their frequency responses might differ based on impact characteristics. Short-duration impacts excite a wider range of frequencies than longer-duration (padded) impacts. While headforms generally perform similarly during padded impacts where resonant frequencies are avoided, excitation of these frequencies during short-duration impacts can result in different kinematic measurements between headforms. The research presented in this thesis had three objectives: to identify the natural frequencies of the Hybrid III and NOCSAE headforms and compare them with published human values to determine which better represents the head's vibrational response; to quantify the vibrational characteristics of different baseball catcher's masks and assess their abilities to limit vibrations transferred to the headforms; and to compare kinematic and frequency responses between headforms in different impact scenarios (high-speed, low-mass projectile impacts vs. low-speed, high-mass pendulum impacts) and see how they are affected by various helmets. The results show the importance of considering frequency content in impact testing, suggesting that the NOCSAE headform behaves more like the human head in short-duration impacts. Even though the catcher's masks "rang" more than the headforms, the vibrations from the projectile impact were in the appropriate range to excite the NOCSAE's natural frequencies. Thus, there was still an oscillatory response in this headform even when protected with the mask. Lastly, the projectile impacts caused higher accelerations in both headforms than the pendulum impacts. However, high frequencies were only experienced by the NOCSAE headform due to the projectile impacts; for the same impact, the Hybrid III just had low frequencies excited. These results are not as relevant for long-duration impacts, since there were similar responses in both headforms for both the pendulum and helmeted projectile impacts. However, they are very applicable for the short-duration impacts that excite a wide range of frequencies, since natural frequency excitation can increase the risk of head injury due to higher acceleration magnitudes.
38

Design and synthesis of molecular resists for high resolution patterning performance

Cheshmehkani, Ameneh 13 January 2014 (has links)
In this thesis, different approaches in synthesizing molecular resist are examined, and structure-property relations for the molecular resist properties are studied. This allows for design of resists that could be studied further as either negative or positive tone resists in photolithography. A series of compounds having different number of acrylate moiety, and different backbones were investigated for photoresist application. Thermal curing of acrylate compounds in organic solvent was also examined. Film shrinkage, as well as auto-polymerization was observed for these compounds that make them unsuitable as photoresist material. Furthermore, calix[4]resorcinarenes (C4MR) was chosen as backbone, and the functional groups was selected as oxetane and epoxy. Full functionalized C4MR compounds with oxetane, epoxy and allyl were synthesized. Variable-temperature NMR of C4MR-8Allyl was studied in order to get a better understanding of the structure’s conformers. Energy barrier of exchange (ΔG#) was determined from coalescence temperatures, and was 57.4 KJ/mol for aromatic and vinyl hydrogens and 62.1 KJ/mol for allylic hydrogens.
39

Masks and the Modern: African/European Encounters in 20th-Century Art

Cohen, Joshua Irwin January 2014 (has links)
Taking Paris as its geographical nexus, this dissertation tracks European and African modernist appropriations of African sculpture across a three-tiered historical trajectory spanning from 1905 to 1980. Part I charts engagements with West and Central African masks and statues by the Fauves and Pablo Picasso; Part II assesses the work of pioneering black South African artists Ernest Mancoba and Gerard Sekoto; and Part III chronicles the nationalization of modern art in Senegal under President Léopold Sédar Senghor. Through examinations of the cross-cultural, formal, and politicized dynamics of African sculpture--or so-called art nègre--in modern art discourse and practice on two continents, the dissertation argues that European and African artists shared certain form-based approaches to African objects, coupled with tactical understandings of those objects' cultural origins. The artists diverged--both individually and by movement--insofar as they appropriated African art to different ends reflective of historical period, social context, and personal approach. More broadly, the dissertation argues that the early-20th-century European avant-garde "discovery" of African sculpture became globally significant through its eventual catalytic role for modern art movements in Africa. It argues that some of the most important modernist appropriators of African sculptural forms were African painters who both studied and subverted their European precursors in that practice.
40

A Study of Barriers to the Wearing of Face Masks by Adults in the US to Prevent the Spread of Influenza

January 2018 (has links)
abstract: In the United States, seasonal influenza is responsible for enormous medical costs and lost earnings as well as thousands of deaths. Medical masks are effective non-pharmaceutical preventions for minimizing the spread of illness in the event of an influenza outbreak. However, people in the United States rarely wear face masks the way many people in Asian countries do. In a previous study of public response to the 2009 influenza A H1N1 pandemic, 71% of United States respondents supported the recommendation to wear a mask during the flu outbreak, while only 8% of respondents reported they wore a mask in public to protect themselves from getting sick. What are the factors that cause this gap? The purpose of this exploratory study is to identify barriers to the wearing of masks among adults in the United States. The research was conducted through an online survey of 84 American residents via the Survey Monkey Audience service to collect their opinions on influenza, mask-wearing, and the perceived barriers to wearing face masks for flu prevention. The results are presented in the descriptive analysis and the non-parametric analysis. The results showed a barrier against social interaction is a significant factor (p=0.003) regarding the impact between flu experience and the perceived barriers. The participants believed mask-wearing may lead other people difficult to perceiving their feelings. Regarding the relationship between mask-wearing experience and the perceived barriers, there were significant differences in perceived benefits (p=0.028), perceived risks (p= 0.003), and social value (p=0.021). Participants who have had worn masks had perceived higher benefits of mask-wearing, higher risks of catching the flu, and a higher agreement of importance to protect other people from getting the flu from them. The most common perceived barrier among the participants is product satisfaction. 85.71% of the participants agreed that wearing face masks is uncomfortable. 80.95% of the participants agreed with the importance to wear face masks as it protects other people from getting the flu from them, but only 37.5% of the participants with flu history had worn face masks. By examining barriers to the wearing of masks for influenza prevention, this study can assess public willingness to adopt personal prevention behaviors and provide information for related policies in the future. / Dissertation/Thesis / Masters Thesis Design 2018

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