Dissertations / Theses on the topic 'Masks'
To see the other types of publications on this topic, follow the link: Masks.
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Masks.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Nicholas, Jeffrey Francis. "Masks." Bowling Green State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1459629154.
Full text
2
Seip, Lisa Pauline. "Early Nuxalk masks." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0027/MQ51469.pdf.
Full text
3
Miller, Stephanie. "Masks, a journey for discovery." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0027/MQ51420.pdf.
Full text
4
Sanchez, Erin. "Filtration Efficiency of Surgical Masks." Scholar Commons, 2010. https://scholarcommons.usf.edu/etd/1760.
Full textAbstract:
Surgical masks are intended to be used to prevent transmission of disease from a health care worker to a patient. Often times, they are relied upon by health care workers for their own protection. In light of recent developments regarding preparation for health care worker response to global infectious diseases such as H1N1 Influenza, health care workers may experience a false sense of security when wearing surgical masks. The goal of this study was to evaluate the filtration efficiency of a double strap tie-on surgical mask. The manufacturer asserts a >95% efficiency with a 0.1 um challenge aerosol under FDA testing procedures. The NIOSH Title 42 CFR Part 84 certification criteria call for testing at a rate of 85 lpm representing a human moderate to heavy work load breathing rate. Three sizes of monodispersed aerosols (polystyrene latex beads: 0.5 um, 1.0 um, 2.0 um) were used.
The specific aims were to measure the collection efficiencies of this mask for the various particle sizes. Two tests were performed. In the first, masks were affixed to a dummy head and the edges of the mask were not sealed. In the second, the edges of the masks were sealed to the head using silicone sealant, so all penetration was through the filtering material of the mask. Differences in upstream and downstream particle concentrations were measured. Thus, penetration by leakage around the mask and through the filtering material was measured. The experimental set up involved passing the aerosol from the nebulizer through a diffusion dryer and Kr-85 charge equilibrator ensuring a dry charge neutralized aerosol cloud for detection by a LASAIR particle counter. The analysis revealed that the filtration efficiency for 0.5 um particles ranged from 3% to 43% for the unsealed masks and 42% to 51% for the sealed. For 1.0 um particles, the efficiency was 58% to 75% for unsealed and 71% to 84% for sealed masks. For 2.0 um, the efficiency was 58% to 79% for unsealed masks and 69% to 85% for the sealed masks. The data were statistically significant and indicated that surgical masks were associated with very low filtration efficiency. This suggests that they may be inadequate against airborne viruses and bacteria.
5
Li, Chan Yi. "Texture synthesis based on texton masks." Thesis, University of Macau, 2005. http://umaclib3.umac.mo/record=b1636981.
Full text
6
Sanders, Jet G. "Face perception and hyper-realistic masks." Thesis, University of York, 2018. http://etheses.whiterose.ac.uk/22393/.
Full textAbstract:
Previous research has shown that deliberate disguise deteriorates human and automatic face recognition, with consequences for person identification in criminal situations. Common forms of deliberate disguise (e.g. balaclavas or hoodies) are easy to detect. When such disguises are used, viewer can distinguish between an unmasked individual - whose identity they knowingly can observe from facial appearance - and a masked individual - whose identity they knowingly cannot. Hyper-realistic silicone masks change this. Their recent use in criminal settings suggests that they effectively disguise identity and are difficult to detect. In this thesis, I first show that viewers are strikingly poor at distinguishing hyper-realistic masks from real faces under live and photographic test conditions, and are worse in other-race conditions. I also show large individual differences in discriminating realistic masks from real faces (5%-100% accuracy), and use an image analysis to isolate information that high performers use for effective categorisation. The analysis reveals an informative region directly below the eyes, which is used by high performers but not low performers. These findings point to selection and training as routes to improved mask detection. Second, I examine the reliability of estimates made of the person beneath the mask. Demographic profiling and social character estimates are poor, and results show that recognition rates were only just above chance, even for familiar viewers. This analysis highlights a systematic bias in these estimates: demographics, traits and social characteristics of the mask were attributed to those of the wearer. This bias has theoretical and applied consequences. First, it supports the automaticity with which viewers use a face to judge a person, even when they know the face is not that of the person. Second, it suggests that predictions of the person underneath the mask, by familiar and unfamiliar viewers alike, should be treated with great caution.
7
Newman, Kevin, and Kevin Newman. "Achromatic Phase Shifting Focal Plane Masks." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/621110.
Full textAbstract:
The search for life on other worlds is an exciting scientific endeavor that could change the way we perceive our place in the universe. Thousands of extrasolar planets have been discovered using indirect detection techniques. One of the most promising methods for discovering new exoplanets and searching for life is direct imaging with a coronagraph. Exoplanet coronagraphy of Earth-like planets is a challenging task, but we have developed many of the tools necessary to make it feasible. The Phase-Induced Amplitude Apodization (PIAA) Coronagraph is one of the highest-performing architectures for direct exoplanet imaging. With a complex phase-shifting focal plane mask, the PIAA Complex Mask Coronagraph (PIAACMC) can approach the theoretical performance limit for any direct detection technique. The architecture design is flexible enough to be applied to any arbitrary aperture shape, including segmented and obscured apertures. This is an important feature for compatibility with next-generation ground and space-based telescopes. PIAA and PIAACMC focal plane masks have been demonstrated in monochromatic light. An important next step for high-performance coronagraphy is the development of broadband phase-shifting focal plane masks. In this dissertation, we present an algorithm for designing the PIAA and PIAACMC focal plane masks to operate in broadband. We also demonstrate manufacturing of the focal plane masks, and show laboratory results. We use simulations to show the potential performance of the coronagraph system, and the use of wavefront control to correct for mask manufacturing errors. Given the laboratory results and simulations, we show new areas of exoplanet science that can potentially be explored using coronagraph technology. The main conclusion of this dissertation is that we now have the tools required to design and manufacture PIAA and PIAACMC achromatic focal plane masks. These tools can be applied to current and future telescope systems to enable new discoveries in exoplanet science.
8
Kella, Vasiliki. "Germinate writing in Plautus : doubles & masks." Thesis, King's College London (University of London), 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.676716.
Full text
9
Jones, Christopher Wendell. "Masks, chamber concerto for violoncello and ensemble." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ49705.pdf.
Full text
10
Bay, Christoph. "Dynamic holographic masks for adaptive optical lithography." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609954.
Full text
11
Davidson, Robert Andrew. "Radiographic contrast-enhancement masks in digital radiography." Thesis, The University of Sydney, 2006. http://hdl.handle.net/2123/1932.
Full textAbstract:
Radiographic film/screen (F/S) images have a narrow latitude or dynamic range. The film’s ability to record and view all the anatomy within the x-ray field is limited by this narrow dynamic range. The advent of digital radiographic means of storing and displaying radiographic images has improved the ability to record and visualise all of the anatomy. The problem still exists in digital radiography (DR) when radiographic examinations of certain anatomical regions are undertaken. In this work, the value of anatomically shaped radiographic contrast-enhancement masks (RCMs) in improving image contrast and reducing the dynamic range of images in DR was examined. Radiographic contrast-enhancement masks are digital masks that alter the radiographic contrast in DR images. The shape of these masks can be altered by the user. Anatomically shaped RCMs have been modelled on tissue compensation filters (TCFs) commonly used in F/S radiographic examinations. The prime purpose of a TCF is to reduce the dynamic range of photons reaching the image receptor and hence improve radiographic contrast in the resultant image. RCMs affect the dynamic range of the image rather than the energy source of the image, that of the x-ray photons. The research consisted of three distinct phases. The first phase was to examine physical TCFs and their effects on F/S radiographic images. Physical TCFs are used in radiographic F/S examinations to attenuate the x-ray beam to compensate for varying patient tissue thicknesses and/or densities. The effect of the TCF is to reduce resultant radiographic optical density variations in the image, allowing the viewer to observe a range of densities within the image which would otherwise not be visualised. Physical TCFs are commonly aluminium- or lead-based materials that attenuate the x-ray beam. A TCF has varying physical thickness to differentially attenuate the iii beam and is shaped for specific anatomical situations. During this project, various commonly used physical TCFs were examined. Measurements of size and thickness were made. Characteristics of linear attenuation coefficients and half-value thicknesses were delineated for various TCF materials and at various energies. The second phase of the research was to model the physical TCFs in a digital environment and apply the RCMs to DR images. The digital RCMs were created with similar characteristics to mimic the shapes to the physical TCFs. The RCM characteristics can be adjusted by the viewer of the image to suit the anatomy being imaged. Anatomically shaped RCMs were designed to assist in overcoming a limitation when viewing digital radiographic images, that of the dynamic range of the image. Anatomically shaped RCMs differ from other means of controlling the dynamic range of a digital radiographic image. It has been shown that RCMs can reduce the range of optical densities within images with a large dynamic range, to facilitate visualisation of all anatomy within the image. Physical TCFs are used within a specific range of radiographic F/S examinations. Digital radiographic images from this range of examinations were collected from various clinical radiological centres. Anatomically shaped RCMs were applied to the images to improve radiographic contrast of the images. The third phase of the research was to ascertain the benefits of the use of RCMs. Various other methods are currently in use to reduce the dynamic range of digital radiographic images. It is generally accepted that these methods also introduce noise into the image and hence reduce image quality. Quantitative comparisons of noise within the image were undertaken. The anatomically shaped RCMs introduced less noise than current methods designed to reduce the dynamic range of digital radiographic images. It was shown that RCM methods do not affect image quality. Radiographers make subjective assessment of digital radiographic image quality as part of their professional practice. To assess the subjective quality of images enhanced with anatomically shaped RCMs, a survey of radiographers and other iv qualified people was undertaken to ascertain any improvement in RCM-modified images compared to the original images. Participants were provided with eight pairs of image to compare. Questions were asked in the survey as to which image had the better range of optical densities; in which image the anatomy was easiest to visualise; which image had the simplest contrast and density manipulation for optimal visualisation; and which image had the overall highest image quality. Responses from 123 participants were received and analysed. The statistical analysis showed a higher preference by radiographers for the digital radiographic images in which the RCMs had been applied. Comparisons were made between anatomical regions and between patient-related factors of size, age and whether pathology was present in the image or not. The conclusion was drawn that digital RCMs correctly applied to digital radiographic images decrease the dynamic range of the image, allowing the entire anatomy to be visualised in one image. Radiographic contrast in the image can be maximised whilst maintaining image quality. Using RCMs in some digital radiographic examinations, radiographers will be able to present optimised images to referring clinicians. It is envisaged that correctly applied RCMs in certain radiographic examinations will enhance radiographic image quality and possibly lead to improved diagnosis from these images.
12
Davidson, Robert Andrew. "Radiographic contrast-enhancement masks in digital radiography." University of Sydney, 2006. http://hdl.handle.net/2123/1932.
Full textAbstract:
Doctor of PhilosophyRadiographic film/screen (F/S) images have a narrow latitude or dynamic range. The film’s ability to record and view all the anatomy within the x-ray field is limited by this narrow dynamic range. The advent of digital radiographic means of storing and displaying radiographic images has improved the ability to record and visualise all of the anatomy. The problem still exists in digital radiography (DR) when radiographic examinations of certain anatomical regions are undertaken. In this work, the value of anatomically shaped radiographic contrast-enhancement masks (RCMs) in improving image contrast and reducing the dynamic range of images in DR was examined. Radiographic contrast-enhancement masks are digital masks that alter the radiographic contrast in DR images. The shape of these masks can be altered by the user. Anatomically shaped RCMs have been modelled on tissue compensation filters (TCFs) commonly used in F/S radiographic examinations. The prime purpose of a TCF is to reduce the dynamic range of photons reaching the image receptor and hence improve radiographic contrast in the resultant image. RCMs affect the dynamic range of the image rather than the energy source of the image, that of the x-ray photons. The research consisted of three distinct phases. The first phase was to examine physical TCFs and their effects on F/S radiographic images. Physical TCFs are used in radiographic F/S examinations to attenuate the x-ray beam to compensate for varying patient tissue thicknesses and/or densities. The effect of the TCF is to reduce resultant radiographic optical density variations in the image, allowing the viewer to observe a range of densities within the image which would otherwise not be visualised. Physical TCFs are commonly aluminium- or lead-based materials that attenuate the x-ray beam. A TCF has varying physical thickness to differentially attenuate the iii beam and is shaped for specific anatomical situations. During this project, various commonly used physical TCFs were examined. Measurements of size and thickness were made. Characteristics of linear attenuation coefficients and half-value thicknesses were delineated for various TCF materials and at various energies. The second phase of the research was to model the physical TCFs in a digital environment and apply the RCMs to DR images. The digital RCMs were created with similar characteristics to mimic the shapes to the physical TCFs. The RCM characteristics can be adjusted by the viewer of the image to suit the anatomy being imaged. Anatomically shaped RCMs were designed to assist in overcoming a limitation when viewing digital radiographic images, that of the dynamic range of the image. Anatomically shaped RCMs differ from other means of controlling the dynamic range of a digital radiographic image. It has been shown that RCMs can reduce the range of optical densities within images with a large dynamic range, to facilitate visualisation of all anatomy within the image. Physical TCFs are used within a specific range of radiographic F/S examinations. Digital radiographic images from this range of examinations were collected from various clinical radiological centres. Anatomically shaped RCMs were applied to the images to improve radiographic contrast of the images. The third phase of the research was to ascertain the benefits of the use of RCMs. Various other methods are currently in use to reduce the dynamic range of digital radiographic images. It is generally accepted that these methods also introduce noise into the image and hence reduce image quality. Quantitative comparisons of noise within the image were undertaken. The anatomically shaped RCMs introduced less noise than current methods designed to reduce the dynamic range of digital radiographic images. It was shown that RCM methods do not affect image quality. Radiographers make subjective assessment of digital radiographic image quality as part of their professional practice. To assess the subjective quality of images enhanced with anatomically shaped RCMs, a survey of radiographers and other iv qualified people was undertaken to ascertain any improvement in RCM-modified images compared to the original images. Participants were provided with eight pairs of image to compare. Questions were asked in the survey as to which image had the better range of optical densities; in which image the anatomy was easiest to visualise; which image had the simplest contrast and density manipulation for optimal visualisation; and which image had the overall highest image quality. Responses from 123 participants were received and analysed. The statistical analysis showed a higher preference by radiographers for the digital radiographic images in which the RCMs had been applied. Comparisons were made between anatomical regions and between patient-related factors of size, age and whether pathology was present in the image or not. The conclusion was drawn that digital RCMs correctly applied to digital radiographic images decrease the dynamic range of the image, allowing the entire anatomy to be visualised in one image. Radiographic contrast in the image can be maximised whilst maintaining image quality. Using RCMs in some digital radiographic examinations, radiographers will be able to present optimised images to referring clinicians. It is envisaged that correctly applied RCMs in certain radiographic examinations will enhance radiographic image quality and possibly lead to improved diagnosis from these images.
13
Roberts, Adam Keith. "Masks of fiction : the function of the Nietzschean mask in the works of Hermann Hesse." Thesis, University of Leeds, 2016. http://etheses.whiterose.ac.uk/15595/.
Full textAbstract:
This project examines the crucially informative role that masks and notions of masking have historically played in shaping western conceptions of identity. Specifically, it explores how this historical pattern is particularly transformative in the works of one of the early twentieth century’s most important writers, Hermann Hesse. Major elements of this development are illustrated by highlighting significant parallels between Hesse and the Irish poet W.B. Yeats, whose literary engagement with masks and identity are starkly similar to Hesse’s. Hesse’s works are commonly read as narratives of a ‘search for the Self’. However, very little scholarly attention is given to exploring what this concept of ‘Self’ actually means in Hesse’s works. By placing acute critical attention on the roles of masks in Hesse’s novels, this project reveals how Hesse’s literary portrayals of identity develop significantly from his first to his final novel (Peter Camenzind in 1904 and Das Glasperlenspiel in 1943). Importantly, the project illustrates how Hesse’s early literary depictions of masks and identity come from a deeply entrenched medieval conception of a ‘fixed’ Self, but, as his career progresses and his portrayals of the ‘Self’ develop, the rhetorical instrument of Friedrich Nietzsche’s ‘Mask’ begins to inform Hesse’s literary representations of identity. This project illustrates how Hesse altogether transforms his portrayals of the ‘Self’ through this rhetorical device. In doing so, it reveals the pertinent role of masks in Hesse’s works and amplifies Hesse’s voice in a long historical dialogue regarding masks and identity.
14
Jiménez, Williams Iván H. "Masks in magic-realist Chilean drama, 1968-1993." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0023/NQ39547.pdf.
Full text
15
Flower, Harriet I. "Ancestor masks and aristocratic power in Roman culture /." Oxford : Clarendon Press, 1996. http://www.loc.gov/catdir/enhancements/fy0604/96008168-d.html.
Full text
16
Chen, Xiao Hua. "Patterning etch masks via the "Grafting-from polymerization." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/30768.
Full text
17
Domotor, Teodora. "Hemingway's In Our Time : masks, silences and heroes." Thesis, University of Surrey, 2012. http://epubs.surrey.ac.uk/804062/.
Full textAbstract:
This thesis sets out to explore the ambiguous concept of American heroism in Ernest Hemingway's short story collection e~titled In Our Time (1925), We shall investigate the author's interpretation of Americanness in its social context during the Roaring Twenties, Because visions of manliness have always been crucial in defining what it means to be an American (Kimmel, 2006, p. ix), the study also gives prominence to Hemingway's representation of masculinity. The surface of his text conforms to contemporary Midwestern defmition of manhood. Accordingly, as existing scholarship asserts, Hemingway's American hero is traumatised in physical and emotional terms, but he conceals his weakness and he comes to terms with his loss, which essentially signifies his American optimism. With the help of men's studies, psychoanalysis and narrative theory, our analysis of In Our Time reveals a different type of man existent in Hemingway's literature. The central protagonist, Nick Adams, displays the characteristics of the inherently melancholic American man. Examining him as a travelling correspondent, we can see how his journey enables him to investigate the meaning of identity and alterity. He comes to acknowledge the shortcomings of his native society. He identifies gaps and hiatuses in the American patriarchal tradition. Nevertheless, Hemingway's innovative narrative style disguises overt criticism about the United States. He manipulates the text and therefore confuses the reader. He applies redundancy - a form of repetition of details --and silencing - a conscious concealment of knowledge - in his narration in order to guide the reader to uncover the truth about preconceived ideals of American heroism and manliness. The American hero emerges as a representative of everything that he is not supposed to be: vulnerable, effeminate, homosexual and open-minded. Nick's "reports" thus deliver an austere critique of the American condition in the 1920s.
18
SeGall, Marc. "Volume Phase Masks in Photo-Thermo-Refractive Glass." Doctoral diss., University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6354.
Full textAbstract:
In many applications such as beam shaping, mode conversion, and phase encoding it is necessary to alter the spatial phase profile of a beam via a phase mask. Conventional techniques to accomplish this either involve surface relief profiling in thin films such as PMMA or refractive index modulation in bulk photorefractive crystals such as lithium niobate. These materials have been used extensively for the past several decades and perform admirably in low power conditions. However, in high power systems these materials will be destroyed, requiring a new means of producing phase masks. In this dissertation a method for producing robust phase masks in the bulk of photo-thermo-refractive glass is developed and successfully demonstrated.
Three main applications of phase masks were studied in detail. The first is mode conversion, where binary phase masks convert a Gaussian beam to higher order modes. The second is beam shaping, where phase masks are used as focusing elements and for optical vortex generation. Near-theoretical conversion efficiency was achieved for all elements in these cases. The third application is aberration analysis and correction. Here the degradation of volume Bragg gratings recorded in an aberrated holographic system was modeled, with the simulations indicating that correcting elements are generally necessary for high-quality production of gratings. Corrective phase masks are designed which can selectively correct one or multiple aberrations of varying magnitudes are shown.
A new type of optical element is also developed in which a phase mask is encoded into a transmitting Bragg grating. This technique combines the local phase modulation of a phase mask with the multiplexing ability of transmitting Bragg gratings, allowing for multiple phase masks to be recorded in a single element. These masks may be used at any wavelength satisfying the Bragg condition, increasing the useful wavelength regime of a single element by orders of magnitude.Ph.D.
Doctorate
Optics and Photonics
Optics and Photonics
Optics and Photonics
19
Knight, Malcolm Yates. "Masks praxis : theories and practices in modern drama." Thesis, University of Glasgow, 2004. http://theses.gla.ac.uk/3942/.
Full textAbstract:
Mask Praxis is an investigation of the theories and practices behind the uses of the mask in modern drama from 1896 to 2004. The study traces the crisis in humanism through the use of idealist and materialist masks by theatre practitioners and explains how the search for a unified field was overlaid by fractured identities and a slide into dissonance. How important are the masks that people adopt on the stage for understanding their actions in society? How does the metaphorical power and perceptual ambiguity of the mask correlate with intentions of its maker and performer? What is the relationship between the mask and the face of the actor, and what does the mask do that cannot be done unaided? What are the main approaches to actor training that have used masks, and how are these training systems connected to wider belief systems? What do we learn from the act of masking about self-perception and social being, and what are the principal considerations that this gives rise to? This investigation proceeds from a consideration of major theories and practices. Chapter 1 examines mask performance theories, conventions, and typologies. Chapter 2 analyses the specificity of the mask, materials and methods, representative mask-makers and provides casebook studies on the Sartori family and the Masks for Menander Project. Chapter 3 evaluates actor-training under the mask from Copeau to Lecoq. Chapter 4 assesses the masks of idealist modernism and Chapter 5 considers the masks of materialist modernism. The final chapter is dedicated to transnational flows, multinational productions and the notion of connectivity. It brings new evidence to bear on the emergent field of masks, puppets and performing objects and sets down a major overview of the mask as a primary iconographic tool and as a liminoid instrument from which to mediate and direct the flow of power in a system.
20
Heikkila, David Laurie. "Orual, a therapeutic appreciation masks, mirrors, and metamorphosis /." Theological Research Exchange Network (TREN), 1998. http://www.tren.com.
Full text
21
Simon, Daniel I. 1971. "Fabrication of micro-optics using binary and graylevel masks." Thesis, The University of Arizona, 1998. http://hdl.handle.net/10150/278670.
Full textAbstract:
This thesis provides step by step instructions on how to design, layout, and fabricate diffractive optical elements (DOE). While there has been a great deal published on the design of DOEs, there are few publications detailing how to transform a design into a physical element. The thesis describes how to order a photomask and pattern an element. It provides recipes that I have used to etch DOEs with both an ion mill and a reactive ion etcher (RIE) at the Optical Sciences Center. The thesis includes characterization of the elements fabricated using these recipes. In addition the thesis looks at the design and fabrication of ring toric lenslets. A ring toric lenslet is a DOE that focuses light to a ring instead of a point. The ring toric lenslet has potential applications in the optical data storage industry. This thesis includes macros for the design and mask layout of binary and grayscale ring toric lenslets. Grayscale elements require special design, calibration, and mask layout steps not necessary for binary elements. Details of the design, calibration, mask layout, and fabrication of the grayscale element are included.
22
Levi, D. M., David J. Whitaker, and A. Provost. "Amblyopia masks the scale invariance of normal human vision." ARVO, 2009. http://hdl.handle.net/10454/4549.
Full textAbstract:
noIn normal vision, detecting a kink (a change in orientation) in a line is scale invariant: it depends solely on the length/width ratio of the line (D. Whitaker, D. M. Levi, & G. J. Kennedy, 2008). Here we measure detection of a change in the orientation of lines of different length and blur and show that strabismic amblyopia is qualitatively different from normal foveal vision, in that: 1) stimulus blur has little effect on performance in the amblyopic eye, and 2) integration of orientation information follows a different rule. In normal foveal vision, performance improves in proportion to the square root of the ratio of line length to blur (L: B). In strabismic amblyopia improvement is proportional to line length. Our results are consistent with a substantial degree of internal neural blur in first-order cortical filters. This internal blur results in a loss of scale invariance in the amblyopic visual system. Peripheral vision also shows much less effect of stimulus blur and a failure of scale invariance, similar to the central vision of strabismic amblyopes. Our results suggest that both peripheral vision and strabismic amblyopia share a common bottleneck in having a truncated range of spatial mechanisms-a range that becomes more restricted with increasing eccentricity and depth of amblyopia.
Leverhulme Trust, Wellcome Trust, NIH
23
Scal, Joshua. "White Skin, Black Masks: Jewish Minstrelsy and Performing Whiteness." Scholarship @ Claremont, 2019. https://scholarship.claremont.edu/cmc_theses/2163.
Full textAbstract:
This work traces the relationship of Jews to African-Americans in the process of Jews attaining whiteness in the 20th century. Specific attention is paid to blackface performance in The Jazz Singer and the process of identification with suffering. Theoretically this work brings together psychoanalytic theories of projection, repression and masochism with afro-pessimist notions of the libidinal economy of white supremacy. Ultimately, I argue that in its enjoyment and its masochism, The Jazz Singer empathizes with blackness both as a way to assimilate into white America and express doubt at this very act.
24
Rathsack, Benjamen Michael. "Photoresist modeling for 365 nm and 257 nm laser photomask lithography and multi-analyte biosensors indexed through shape recognition." Access restricted to users with UT Austin EID, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3035170.
Full text
25
Angold, Alan. "Ownership Masks, Evolving Views and Cooperative Templates in Template Tracking." Thesis, University of Waterloo, 2003. http://hdl.handle.net/10012/1011.
Full textAbstract:
A template tracker is a tracker based on matching a pre-initialised view of an object with the object's view in an image sequence. Using an error function, the intensity difference between the template view and the templated region in the image is measured. This error measure is used as the basis for a template alignment algorithm that will adjust the template's pose to more accurately register the template view with the view of the object in the image.
Some significant problems present themselves with this simple tracker. Extraneous, or non-object, pixels within the template boundaries can cause bias in the registration of the template. Partial occlusions of the object's view in the image can also cause serious bias in the template's pose. Beyond simple occlusions there are transits of occlusions across an object. Occlusion transits are significant because over time they can occlude the entire object in an incremental fashion. If initially the template view is not completely known this kind of occlusion can easily cause a total tracking failure for an object.
In this thesis three enhancements of the basic template tracker are proposed: Ownership Masks, Cooperative Templates, and Evolving Views. Ownership Masks are aimed at eliminating the extraneous pixels from the template view. Cooperative templates are used to separate the intensity probabilities when more than one template covers a pixel. Building upon both Ownership Masks and Cooperative Templates, Evolving Views update the template views when occlusion transits are a problem.
With these enhancements we have been able to increase the accuracy of tracking objects where large portions of a template contain background pixels. Also occlusions and some types of unocclusions can be detected and discriminated. Finally, some failures in the basic tracker due to occlusion transits have been overcome.
26
Tims, W. Keith. "Masks and Sartre's Imaginary masked performance and the imaging consciousness /." unrestricted, 2007. http://etd.gsu.edu/theses/available/etd-04182007-210215/.
Full textAbstract:
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.
27
Tims, William Keith. "Masks and Sartre's Imaginary: Masked Performance and the Imaging Consciousness." Digital Archive @ GSU, 2007. http://digitalarchive.gsu.edu/communication_diss/10.
Full textAbstract:
The use of masks in performance and actor training is often linked to the imagination, but there is seldom discussion of the nature of this imaginary link. Using the philosophy of Jean-Paul Sartre (most especially his work The Imaginary) and the writings of modern mask theorists, this dissertation examines the relationship between masks and the imaging consciousness in both masked actors and the audiences who observe them. We discover that a mask is an analogon for an Other and that a mask authorizes games of identity which play out imaginatively in the performance milieu. In fact, generally speaking, a mask in performance is apprehended in a more imaginative way than a non-masked performance. Further than this, the mask illustrates the basic nature of the human consciousness and identity espoused by Sartre: that who we are is not a product of our psychology, but rather, the product of our imaginations and our choices. The dissertation concludes by suggesting that masks point to an alternative approach to character creation which likewise rejects psychology, and instead relies on physicality, abstraction, and ambiguity, all of which are essential to activating the imaging consciousness.
28
Wright, Alan James. "Distortion in conformable masks for evanescent near field optical lithography." Thesis, University of Canterbury. Electrical and Computer Engineering, 2007. http://hdl.handle.net/10092/1161.
Full textAbstract:
In this thesis the in-plane pattern distortion resulting from the use of Evanescent Near Field Optical Lithography (ENFOL) masks was investigated. ENFOL is a high resolution low-cost technique of lithography that is able to pattern features beyond the diffraction limit of light. Due to its use of the evanescent near field, ENFOL requires the use of conformable masks for intimate contact. Such masks can stretch and skew as they come into contact with silicon substrates and therefore distort the high resolution features patterned on them. It was desired to measure this distortion to ascertain the patterning performance of ENFOL masks and possibly correct for any uniform distortion found. To this end a sophisticated measuring process was successfully demonstrated. This involved the use of a Raith 150 Electron Beam Lithography (EBL) system with precision laser interferometer stage and metrology software module for automated measurements. Custom software was written for the Raith to enable it to take additional measurements to compensate for electron beam drift. Processing algorithms were then employed to using the measurements to compensate for beam drift and correcting for shift and rotation systematic errors. The performance of the in-plane distortion measuring process was found to have a precision of 60nm. With the ability to measure distortion, ENFOL masks were used to pattern substrates and distortion was found to be large, on the order of 1µm. This is much larger than desired for sub 100nm patterning as is expected of ENFOL. The distortions were non-uniform patterns of localised displacements. This, the observation of Newton's rings beneath a test mask and the observation of a single particle distortion across measurements of the same mask across different loadings in the EBL pointed to particulate contamination causing the distortion. In order to prove beyond doubt that particulate contamination was the cause of the spurious distortions, mechanical modelling using the Finite Element Method (FEM) of analysis was employed. The results from this matched the distortions observed experimentally, particles 20-40µm modelling the observed distortion.
29
George, Jonathan Keith. "Polar Synthetic Imaging| Single Pixel Imaging with Rotating Spiral Masks." Thesis, The George Washington University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1566270.
Full textAbstract:
The use of spiral masks placed in front of a single pixel and rotated in time is investigated as a method of single pixel imaging. Single pixel imaging allows an image to be reconstructed from samples of a single pixel over time. This sampling has traditionally been accomplished with liquid crystal arrays or digital micromirror devices. A set of rotating spiral masks in the aperture offer an alternative solution that may reduce complexity and cost for some imaging applications.
30
Lee, Ken-fang. "Yellow skin, white masks : translating cultures in Chinese American literature." Thesis, University of Sussex, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310669.
Full text
31
Gintoli, Michele. "Fabrication and characterization of spiral phase masks for super-resolution." Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3423144.
Full textAbstract:
Confocal microscopy, with both high lateral and axial resolution, has enabled the observation of the inner workings of cells and tissues with great detail. Strong scattering and absorption of light, though, strongly limit the depth at which samples can be imaged, and resolution is limited to a wavelength-wide area in the focal plane by diffraction. Sample penetration of hundreds of µm can be reached by nonlinear microscopy, based on the interaction between the tissue and multiple infrared photons, that undergo much less scattering and absorption. Resolutions of just tens of nanometers can also be reached with STED microscopy, an upgrade to the confocal architecture. Two-photon excitation STED (TPE-STED) microscopes have been invented in the last decade to combine the two properties, with resolution gains up to 4-5 times the diffraction-limited systems, at depths of tens of microns. Still, scattering and absorption of the depletion beam limit the observation of super-resolved features in the 100 µm regions. The aim of this thesis was the development of the first TPE-STED microscope working with excitation wavelengths in the [1000−1500] nm range and depletion wavelengths near 800 nm, capable of surpassing the depth limit of current STED microscopes. Suitable fluorophores must be used in this regime, so we tested the depletion performance of ATTO 594, ATTO 647N and mGarnet2. In parallel, we used the dual-beam nature of the platform to provide simultaneous nonlinear imaging with both degenerate and nondegenerate absorption of photons at the different wavelengths. A consistent part of the thesis work was also centered on the development of a protocol of fabrication and characterization optical elements for the manipulation of the STED beam. This was done in order to be able to freely couple every selected fluorophore with its most efficient depletion wavelength, without the need for long waiting times of commercial applications.La microscopia confocale, con la sua alta risoluzione laterale e assiale, ha permesso l'osservazione delle dinamiche interne delle cellule e dei tessuti in modo dettagliato. La profondità alla quale è possibile osservare i campioni, però, è fortemente limitata dalla diffusione e dall'assorbimento subiti dalla luce, inoltre la risoluzione sul piano focale è limitata ad un'area di grandezza paragonabile alla lunghezza d'onda utilizzata, a causa della diffrazione. È possibile raggiungere profondità di centinaia di µm usando la microscopia nonlineare, basata sull'interazione tra il tessuto e più fotoni infrarossi, che subiscono molto di meno gli effetti della diffusione e dell'assorbimento nel tessuto. Risoluzioni di poche decine di nanometri possono inoltre essere ottenute grazie alla microscopia STED, un miglioramento della modalità confocale. Nell'ultimo decennio, sono stati sviluppati microscopi STED con eccitazione a due fotoni (TPE-STED), in modo da combinare queste due proprietà, con risoluzioni che a profondità di decine di micron arrivano fino a valori 4-5 volte migliori dei sistemi limitati dalla diffrazione. Ciononostante, la diffusione e l'assorbimento del fascio di deplezione limitano la profondità alla quale poter ancora osservare dettagli super-risolti a non più di un centinaio di micron. Lo scopo di questa tesi è stato lo sviluppo del primo microscopio TPE-STED con eccitazione nel range [1000-1500] nm e lunghezze d'onda di deplezione vicine agli 800 nm, in modo da poter sorpassare il limite di profondità degli attuali microscopi STED. In questo regime, sono necessari fluorofori adatti, e per questo abbiamo testato la performance delle molecole ATTO 594, ATTO 647N e mGarnet2. In parallelo, abbiamo usato il sistema a due fasci della piattaforma per fornire simultaneamente imaging nonlineare con assorbimento degenere e nondegenere di fotoni a diverse lunghezze d'onda. Una parte consistente del lavoro di tesi è stato anche concentrato sullo sviluppo di un protocollo di fabbricazione e caratterizzazione di elementi ottici per la manipolazione del fascio STED. Lo sforzo è stato compiuto con l'intenzione di poter abbinare liberamente ogni fluoroforo selezionato con la lunghezza di deplezione più efficiente, senza dover attendere i lunghi tempi necessari per la richiesta di soluzioni commerciali.
32
Davis, Geoffrey P. "Transparent polyurethanes : synthesis, characterisation and mustard gas resistance." Thesis, Loughborough University, 1987. https://dspace.lboro.ac.uk/2134/11238.
Full textAbstract:
Transparent Polyurethanes based upon Polycaprolactone and H 12MDIisocyanate (Desmodur W) have been synthesised and tested with regard to permeation by Mustard Gas (HD). Variations in soft segment molecular weight, reaction ratio, and chain extender, as well as the effect of crosslinking have been investigated. It was found that the principal factor governing permeation behaviour was soft segment molecular weight. However as hard segment content increased the determinant role of the soft segment diminished. Morphological Analysis of the synthesised polyurethanes was carried out using DSC, CMI'A, GPC, and WAXD techniques. The physical properties (Hardness, Tensile Strength, etc) of these materials were also determined. Results showed that the use of mixed diol chain extenders or trifunctional crosslinking elements produced increased phase mixing in the polyurethanes as a consequence of poorer hard segment domain organisation. This had the effect of reducing soft segment restrictions such that poorer permeation performance was obtained. GPC and DSC Analysis of the various polycaprolactones used in the synthesis programme suggested that the lower molecular weight polyols (550-2000) were composed of at least two different molecular weight species. Work with mixed polyol formulations indicated this may affect the physical properties of the polyurethanes. GPC Analysis of the synthesised polyurethanes themselves showed a wide variety of molecular weights were obtained; these were seen to be very dependent upon polyol molecular weight. The CAPA 210 (1000 Mol.Wt.) based elastorners had the highest Mn values. It is believed these variations in molecular weight are related to the presence of different catalysts, activators, etc in the original polyols. Injection Moulding trials were carried out on the formulation considered to be the most promising candidate for the face mask material. Slight changes in physical properties were obtained as processing conditions were varied. Most significantly the polyurethane began to shown signs of yellowing at high injection temperatures (190°C and above).
33
Arnal, Pons Ana María. "Triangular Bézier surfaces generation methods using P.D.E’s, functional minimization and masks." Doctoral thesis, Universitat Jaume I, 2007. http://hdl.handle.net/10803/120705.
Full textAbstract:
La tesi doctoral titulada "Mètodes per a generar superfícies de Bézier triangulars utilitzant EDPs, minimització de funcionals i màscares," és un complet treball en què s'aborda el següent problema: com generar superfícies de Bézier triangulars que tinguen per frontera un conjunt de corbes donades.
La tesi presenta diferents mètodes, amb gran varietat d'exemples, que permeten generar aquestes superfícies. Aquests mètodes han estat obtinguts a partir de diverses tècniques:
- Equacions en derivades parcials.
- Problemes variacionals.
- Generació de xarxes de control mitjançant màscares.
- Representacions de Weierstrass per superfices de Bézier minimals.
Aquestes superfícies són àmpliament utilitzades en les branques del disseny gràfic assistit per ordinador, l'enginyeria industrial i la informàtica gràfica.
34
Anderson, Lorna. "Double masks of the Northwest Coast of America in museum collections." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/28148.
Full textAbstract:
Sixty masks that open to reveal another mask inside have been examined and are described in detail. Colour photographs and sketches illustrate these "double masks", which were made by native people of the Northwest Coast. The sample described here represents approximately 60% of the double masks in museum collections. Such a substantial number of double masks has not been described previously. These data help fill an existing gap in our knowledge of Northwest Coast masks.
The main sources of data for this thesis are museum records, collectors notes, and ethnographies. There is little specific information about the ceremonial use of double masks. Literary sources suggest that double masks were probably used in a similar way to most single masks.
Analysis of form and style shows that double masks are carved and painted in the specific style of each Northwest Coast group. However, although the styles of the double masks vary, the basic form is consistent. Eighty-five percent of the masks have a human image inside and the image of another creature outside. This observation supports the idea that Northwest Coast native people consider there is a close relationship between humans and other creatures.
Recently, this type of mask has often been classified as a "transformation mask", but older records and ethnographies do not use this term. The word "transformation" is complex, and the recent term "transformation mask" may be misleading. This thesis serves to remind anthropologists that we should be cautious in our use of language. We should be careful to speak of other cultures and societies in ways that reflect their ideas and meanings.
The essential feature of double masks is that they open up to reveal another mask inside. For this reason double masks are versatile and dramatic. They provide an innovative masking technique for ceremonial dances.Arts, Faculty of
Anthropology, Department of
Graduate
35
OGILVIE, Madeleine, and m. ogilvie@ecu edu au. "The semiotics of visible face make-up: the masks women wear." Edith Cowan University. Business And Law: School Of, 2005. http://adt.ecu.edu.au/adt-public/adt-ECU2006.0011.html.
Full textAbstract:
This dissertation explores the `sign' of visible face make-up and examines how women consume appearance in everyday life in contemporary Australia. Using a semiotic framework, it presents a novel new method for interpreting and gaining increased meaning into an everyday consumption phenomenon. The purpose of the study is to gain insights into why women wear make-up. It seeks to provide understanding of what this medium signifies to women and what the `sign' of make-up symbolises to the female individual. It explores how visible face make-up affects the way women consume appearance in everyday life, how they feel about themselves, and the role make-up plays in defining their own self-identity. The study utilises an interpretivist approach and uses a qualitative methodology in the form of phenomenology. The theoretical framework used to underpin this research is semiotics and this study examines the sign of make-up using two different semiotic perspectives previously not used together. The significance of this process is that by combining these perspectives a richer and more in-depth understanding is derived.
36
Ku, Yao-Ching. "Fabrication of distortion free x-ray masks using low stress tungsten." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/39038.
Full textAbstract:
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1992.Includes bibliographical references (leaves 113-115).
by Yao-Ching Ku.
Ph.D.
37
Ilcan, Suzan M. (Suzan Margaret) Carleton University Dissertation Sociology. "Masks of domination; the deployment of morality in a Turkish village." Ottawa, 1993.
Find full text
38
Seong, Seok-Won. "Dictionary-based code compression techniques using bit-masks for embedded systems." [Gainesville, Fla.] : University of Florida, 2006. http://purl.fcla.edu/fcla/etd/UFE0013980.
Full text
39
Ogilvie, Madeleine. "The semiotics of visible face make-up: The masks women wear." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2005. https://ro.ecu.edu.au/theses/110.
Full textAbstract:
This dissertation explores the `sign' of visible face make-up and examines how women consume appearance in everyday life in contemporary Australia. Using a semiotic framework, it presents a novel new method for interpreting and gaining increased meaning into an everyday consumption phenomenon. The purpose of the study is to gain insights into why women wear make-up. It seeks to provide understanding of what this medium signifies to women and what the `sign' of make-up symbolises to the female individual. It explores how visible face make-up affects the way women consume appearance in everyday life, how they feel about themselves, and the role make-up plays in defining their own self-identity. The study utilises an interpretivist approach and uses a qualitative methodology in the form of phenomenology. The theoretical framework used to underpin this research is semiotics and this study examines the sign of make-up using two different semiotic perspectives previously not used together. The significance of this process is that by combining these perspectives a richer and more in-depth understanding is derived.
40
Chu, Rita Ching-Mei. "An apprenticeship in mask making situated cognition, situated learning, and tool acquisition in the context of Chinese Dixi mask making /." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1158693508.
Full text
41
Magee, Ciaran D. "Research, design and development of anaesthesia delivery apparatus and associated equipment." Thesis, University of Ulster, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243739.
Full text
42
Eroh, Martin Patrick 1962. "DEVELOPMENT OF A NEW QUANTITATIVE FIT TEST FOR CHEMICAL CARTRIDGE RESPIRATORS - A FEASIBILITY STUDY (PRESSURE)." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/276782.
Full text
43
Roselli, Marco. "Surgical masks: analysis of their performances and possible solutions for their reusability." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
Find full textAbstract:
As a consequence of the high virus spreading capability, the COVID-19 outbreak has led to an uncontrolled situation. Several mask types can be used to limit virus diffusion; however, the present project focuses on surgical masks only. This type of masks, regulated by the EN14683:2019 normative, is intended to be a disposable device with the aim of blocking droplets exiting the wearer's mouth and nose and, further, protecting the wearer from external splashes.
The starting point of this project is to investigate the mask reusability; this is a crucial issue because the environmental impact caused by disposable masks is gaining increasing importance.
To begin with, the study has focused on the evaluation of how the masks' performances vary over time and, it has proceeded with tests (long-run tests) aimed at evaluating their parameters, the differential pressure and the bacterial filtration efficiency, in two types of situations: an intense and prolonged use and a limited use. The combination of two masks has also been investigated. To find effective regenerating strategies, domestic practices have been investigated, among those the use of alcohol, hand washing and industrial washing. Some tests have been also performed on a surgical mask with an interchangeable filter, in order to verify the effectiveness of the washing procedure.
The study has demonstrated that masks behave differently and this mainly depends on the type of filter medium placed inside the structure. Some of them do not exhibit any variation in the investigated parameters, whereas others show a significant decrease only in terms of filtration efficiency. Nevertheless, the reusability can be possible by taking the full advantage of mask performances or by following a proper regenerating method. The mask with interchangeable filter is the most ecofriendly alternative and it has demonstrated to be compliant with the standard requirements even after 25 cycles of industrial washing.
44
Ahmed, Usman. "Impact of custom interconnect masks on cost and performance of structured ASICs." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/33816.
Full textAbstract:
As process technology scales, the design effort and Non-Recurring Engineering
(NRE) costs associated with the development of Integrated Circuits (ICs) is becoming extremely high. One of the main reasons is the high cost of preparing and processing IC fabrication masks. The design effort and cost can be reduced by employing Structured Application Specific ICs (Structured ASICs). Structured ASICs are partially fabricated ICs that require only a subset of design-specific custom masks for their completion.
In this dissertation, we investigate the impact of design-specific masks on the area, delay, power, and die-cost of Structured ASICs. We divide Structured ASICs into two categories depending on the types of masks (metal and/or via masks) needed for customization: Metal-Programmable Structured ASICs (MPSAs) that require custom metal and via masks; and Via-Programmable Structured ASICs (VPSAs) that only require via masks for customization. We define the metal layers used for routing that can be configured by one or more via, or metal-and-via masks as configurable layers. We then investigate the area, delay, power, and cost trends for MPSAs and VPSAs as a function of configurable layers.
The results show that the number of custom masks has a significant impact on
die-cost. In small MPSAs (area < 100 sq.mm), two configurable layers result in the lowest cost, whereas the lowest cost in large MPSAs (area >100 sq.mm) is achieved with three or four configurable layers. The lowest cost in VPSAs is also obtained with four configurable layers. The best delay and power in MPSAs is achieved with three or four configurable layers. In VPSAs, four configurable layers lead to lowest power and delay, except when logic blocks have a large layout area. MPSAs have up to 5x, 10x, and 3.5x better area, delay, and power than VPSAs respectively. However, VPSAs can be up to 50% less expensive than MPSAs. The results also demonstrate that VPSAs are very sensitive to the architecture of fixed-metal segments; VPSAs with different fixed-metal architectures can have a gap of up to 60% in area, 89% in delay, 85% in power, and 36% in die-cost.
45
Tsai, Yu Hsiu, and 蔡毓秀. "Numerous Faces of Masks ─ Yu-Hus Tsai Discussion of Making Painted Masks." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/83169930392477940414.
Full textAbstract:
碩士華梵大學
工業設計學系碩士班
100
Abstract "Mask Art" is not only the researchers，of art perfor-mance thinking and creative thinking，but alsothe expresson of mind and teachingby introducing the. Artistic creation from the mask, the researcher useda combination of media, techniques, creative concept and direction , and present an art style because the creation is not only the literal translation of ideology, it is reflective, critical and original. The researcher hoped to evoke the demastratiom and exploration of the "Mask Art" by the mask creation process. This paper “Painted Mask”, the researchers discussed the performance of the elements through the effect of transforming the image and through the direction of the cross-analysis of the West Mask Art-based modeling, color, symbols, imagery, national totems meaning, to explore the mask which has the unique style of art as the creation of the researchers. In this thesis, the first chapter "Introduction" explored the motivation, purpose, method, architecture, scope, and translation. Followed by Chapter II "Mask Historical Overview of the Development of the Arts of East and West," there is an overview of the masks from ancient to modern times, the Development and Evolution, and Review of the mask in the use of contemporary fashion styling. Then the third chapter, "Chinese and Western Style Characteristics of the Mask Dance" contains Mask Art in Europe, China, Japan and division of ownership and features of the different shapes of the mask. Continually researchers desing experience sharings are shown in the fourth chapter,containing (a) the pattern of performance; (b) the performance of the color; (c) performance material, and finally the fifth chapter "Conclusions" ; researchers refers implications for further research and future expectations. By the combination of Chinese and Western art to convert the space for creativity and thoughts of our teaching model, teachers can enrich in the teaching process, teaching creativity and artistic design. Key words：Numerous Faces of Masks, Making Painted Masks
46
Huang, Yu-Min, and 黃郁閔. "The Development of Masks." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/07182965982812659279.
Full textAbstract:
碩士嘉南藥理大學
化粧品應用與管理系
103
It is important for a better beauty to use mask products during the skin care treatment. A series of mask products have been commercially available. Among the masks, the type of creams one of the most widely used. The mask creams included principal raw materials such as surfactants, thickeners, film formers and powders, etc., may have some problems about produce's storage instability and poor matching usage purpose. In addition, there is a little publication on the influence of varying the materials on their physicochemical properties and spreadability on skin. This had led to the development of elegant mask creams and a method was established to characterize the mask creams. The characteristics of the mask creams can be influenced mainly by the emulsifier and fatty components. The aim of this study was to use GMS as an emulsifier to formulate the mask cream.Varying kinds of components such as a triglyceride (Aloe oil), humectants, and thickening agents were also selected to improve the formula’s physicochemical properties and their application on skin. These properties included rheological behavior, color difference, and water lose were evaluated to characterize the mask creams. In addition, handling properties such as brush marks, removal, and dryness were measured by taking a photograph using the digital camera and illuminating tubes which is placed in a wooden box. In conclusion, the effect of the mask cream using GMS as an emulsifier can be controlled. Incorporating Biocellact Aole Vera B as a humectant and the lower amount of oil phase in the formulation with bentonite, we produce good textural cream with spreadable properties as well as high storage stability. Based on these findings, a desired mask cream was obtained. With a good rubbing and, stability at 45℃ testing for 70 days, and esthetic appearance, it is composed of GMS 1.50%、Stearic acid 0.40%、Cetyl alcohol 0.60%、Cetyl-Stearly alcohol 1.50%、Unimer U-15 0.70%、Microcrystaline 1.20%、Aloe oil 9.10%、Vite E 0.30%、Amiphisol K 0.60%、Xanthan gum 0.30%、Bentonite 0.40%、EDTA.2Na 0.05%、Glycerin 7.00%、1,3 Butylene Glycol 7.00%、Biocellact Aloe Vera B 3.00%、Hyaluronic Acid 0.05%、Prodew 400 2.50%、Kaolin 4.00%、TiO2 4.00%、Pigment 0.20%、Saligerm G2 0.80%、D.W46.10%。
47
ZHOU, PENG GU, and 周芃谷. "A Study of Xi Qu :the Masks and Performances with Mask." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/91902897818227712253.
Full textAbstract:
碩士東吳大學
中國文學系
97
Mask is special historical remains. According to ancient literature documents, mask had various names. For example: Qi-Tou (倛頭), Dai-Mian (代面), Da-Mian (大面), Jia-Mian (假面), etc. Even if in the present time, mask also has different terms. For instance: Lian-Zi (臉子), Gui-Lian-Ke (鬼臉殼), Jia-Mian (假面), etc. The emergence of mask came from the simulation of supernatural or Gods who govern the universe. Therefore when our ancestors were wearing masks, they were actually performing the power of God. From the ancient age to modern times, mask is still strongly affiliate with all kinds of performances. Accordingly, the emphases of this study were focused on two categories: First was the mask – this study only addressed the mask that was used in traditional theater or theatric masks. The other category was theatric performances – the theater that were using masks during the play or theatric mask performances such as original mask drama and Qu-Nuo (驅儺) mask ceremony. This study researched on mask and mask theatric performances. Both of the categories are parts of traditional Chinese theater, however they have different characteristics. Mask belongs to historical theatric remains, or even historical remains. Mask theatric performances belongs to theatric arts. Although two categories are closely related, the approaches of examination were quite different. Consequently, to conclude two categories, the researcher divided the study into two parts. Part one discussed the general meaning of mask and the second part talked about mask performances during each Chinese Dynasties. The first part of this study was focused on the mask, which is a historical remains that is less known by the general public. First chapter was beginning with the “introduction of mask”, given the general and narrow definition and discussed the origins and time period of its emergence. Second chapter went over the “classification of mask” made my previous scholars and justified the class for this study. Third chapter was “mask modes”, identifying different mask modes. Last chapter ended up with the “development of mask”, describing the evolution and progress from ancient age to present time. The second part of this study followed the time sequence of mask performances occurred. First chapter was the “synthesis of ancient mask performance”, addressing early period of witchery and totemic mask drama. Second chapter was “Han and Tang Dynasty Bai-Xi (百戲) drama and mask performances”, stating the evolution of Nuo-Yi (儺儀) mask since Zhou Dynasty, using brick painting from Han Dynasty to sketch Bai-Xi (百戲) mask performance at that time, and citing historical records and epic poems to restore the mask drama performances at Tang Dynasty. Third chapter was “Za-Ju (雜劇), Nuo-Xi (儺戲), and She-Huo (社火) performances in Northern and Southern Song Dynasty”, using Za-Ju (雜劇), Nuo-Xi (儺戲), and She-Huo (社火) performances to discuss mask performance in Song Dynasty. The fourth chapter was “mask performances in Yuan, Ming, and Qing Dynasty”, besides the mask performance in Ming and Qing dramas, the study also probed the mask theater and mask dance in Tibet. Combined literatures from each dynasty and historical remains data and based on social background, the researcher drew the outline of ancient mask performances. In conclusion, there were four results from the study: Theater results from ancient dramatic arts; From Bai-Xi (百戲) to Nuo-Yi (儺儀) drama, these performances were all associated with mask; Mask and theater performances were gradually united to each other; and lastly, Mask facilitated the development of ancient drama arts.
48
Calvert, Heather. "Aubrey Beardsley the masks of ambiguity /." 1995. http://catalog.hathitrust.org/api/volumes/oclc/32920921.html.
Full textAbstract:
Thesis (M.A.)--University of Wisconsin--Madison, 1995.Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 69-70).
49
Zoltán, Rácz. "Piezoflexure-enabled nanofabrication using translated stencil masks." 2007. http://etd.nd.edu/ETD-db/theses/available/etd-04202007-200219/.
Full textAbstract:
Thesis (Ph. D.)--University of Notre Dame, 2007.Thesis directed by Alan C. Seabaugh for the Department of Electrical Engineering. "April 2007." Includes bibliographical references (leaves 145-154).
50
"Manipulation of ultrashort pulses with digital masks." 2015. http://repository.lib.cuhk.edu.hk/en/item/cuhk-1291801.
Full text