Matching Items (109)
Description
Infrared photodetectors, used in applications for sensing and imaging, such as military target recognition, chemical/gas detection, and night vision enhancement, are predominantly comprised of an expensive II-VI material, HgCdTe. III-V type-II superlattices (SLs) have been studied as viable alternatives for HgCdTe due to the SL advantages over HgCdTe: greater control of the alloy composition, resulting in more uniform materials and cutoff wavelengths across the wafer; stronger bonds and structural stability; less expensive substrates, i.e., GaSb; mature III-V growth and processing technologies; lower band-to-band tunneling due to larger electron effective masses; and reduced Auger recombination enabling operation at higher temperatures and longer wavelengths. However, the dark current of InAs/Ga1-xInxSb SL detectors is higher than that of HgCdTe detectors and limited by Shockley-Read-Hall (SRH) recombination rather than Auger recombination. This dissertation work focuses on InAs/InAs1-xSbx SLs, another promising alternative for infrared laser and detector applications due to possible lower SRH recombination and the absence of gallium, which simplifies the SL interfaces and growth processes. InAs/InAs1-xSbx SLs strain-balanced to GaSb substrates were designed for the mid- and long-wavelength infrared (MWIR and LWIR) spectral ranges and were grown using MOCVD and MBE by various groups. Detailed characterization using high-resolution x-ray diffraction, atomic force microscopy, photoluminescence (PL), and photoconductance revealed the excellent structural and optical properties of the MBE materials. Two key material parameters were studied in detail: the valence band offset (VBO) and minority carrier lifetime. The VBO between InAs and InAs1-xSbx strained on GaSb with x = 0.28 - 0.41 was best described by Qv = ÄEv/ÄEg = 1.75 ± 0.03. Time-resolved PL experiments on a LWIR SL revealed a lifetime of 412 ns at 77 K, one order of magnitude greater than that of InAs/Ga1-xInxSb LWIR SLs due to less SRH recombination. MWIR SLs also had 100's of ns lifetimes that were dominated by radiative recombination due to shorter periods and larger wave function overlaps. These results allow InAs/InAs1-xSbx SLs to be designed for LWIR photodetectors with minority carrier lifetimes approaching those of HgCdTe, lower dark currents, and higher operating temperatures.
ContributorsSteenbergen, Elizabeth H (Author) / Zhang, Yong-Hang (Thesis advisor) / Brown, Gail J. (Committee member) / Vasileska, Dragica (Committee member) / Johnson, Shane R. (Committee member) / Arizona State University (Publisher)
Created2012
Description
Public engagement is increasingly viewed as an important pillar of scientific scholarship. For early career and established scholars, however, navigating the mosaic landscape of public education and science communication, noted for rapid “ecological” succession, can be daunting. Moreover, academics are characterized by diverse skills, motivations, values, positionalities, and temperaments that may differentially incline individuals to particular public translation activities.
ContributorsAmorim, Carlos Eduardo G (Author) / Dasari, Mauna (Author) / Durgavich, Lara (Author) / Hinde, Katie (Author) / Kissel, Marc (Author) / Lewton, Kristi L (Author) / Loewen, Tisa (Author)
Created2021
Description
After giving birth, protections are essential to provide a mother with the time and ability to support her new child. There are several considerations for policy makers when they establish a maternity leave policy that best facilitates bonding, wellbeing, and the health of the mother-infant dyad. Within Switzerland, maternity leave policy permits fourteen-weeks of paid leave, including an optional two week unpaid extension. To understand how Swiss women are experiencing the current maternity leave policy, a scholarly database search was conducted and six interviews were held with stakeholders in Switzerland. Several themes emerged through the interviews, particularly, the mother-infant dyad, and the mental & physical health of the new mother. Stakeholders found the current leave policy within Switzerland may be sufficient, on average, to support women’s physical healing post-birth. However, it may act as a barrier for mental health interventions, and achieving breastfeeding goals which benefit both mother and child. Several stakeholders suggested lengthening maternity leave to remove these barriers. This study emphasizes the need for policy makers to consider the complex impacts of maternity leave policy on not only the health of the child, but also the mother.
ContributorsClifford, Sarah Elizabeth (Author) / Hinde, Katie (Thesis director) / Bond, Angela (Committee member) / School of Human Evolution & Social Change (Contributor) / School of Social Transformation (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Fashion is an inherently political and reflective medium for the daily ramblings and revolutions of a society. Much of the time the influence is subtle. Silhouettes and fabrics reflect different stances on conservatism, on sex, on the degrees to which we fetishize luxury, and on infinite other attitudes of an era. Other times the influence is extremely direct, with text printed on the clothing that explicitly articulates a current societal dynamic. I began exploring fashion in 2016, as the country had reached an unprecedented and linguistically weaponized divide.
While taking a fashion technology course under the instruction of Galina Mihaleva, I developed a tracksuit incorporating concealed LED displays that are capable of scrolling customizable text on the sides of the garment. I expanded on this futuristic execution of politically charged clothes by utilizing a more realistic application of the LED technology in the Bouis Vuitton project. This project is a collection of six white vinyl bags with semi-flexible LED displays projecting revolutionary slogans through the vinyl textile.
The bags act as an appropriate housing for technology that is intended for significantly longer use, as bags have a longer lifespan in wardrobes than clothes and return to trend more frequently. The production investment in the technology is more equitable to the investment in the production of a bag and facilitates the wearer’s broadcasting of concise messages. The result is a collection of functional, utilitarian pieces with a clean, futuristic look and a mixed modern and vintage silhouette scrolling pro-revolutionary messages.
Broadcasting the knock-off name ‘BOUIS VUITTON’, I’ve inserted only my first initial into the reputable luxury company and paired it with slogans: ‘EAT THE RICH’ and ‘HEADS WILL ROLL’. The collection articulates a sense of nihilism felt by the youngest generations growing up on the outside of a very exclusive economic and political sphere. Three upcycled vintage luggage pieces evoke associations with the white American upper-class society of the 1960s. The luggage pieces were retrofitted in white vinyl and white-enameled metal fixtures. Three additional soft bags made of the same material reflect a utilitarian style of functional bags on trend with Spring/Summer 2019 streetwear. For the runway presentation of the bags, the models are dressed in navy-colored Dickies boiler suits, white retro-style Fila sneakers, and white ascots reminiscent of the historical male ruffled cravat. The contradictions of iconic silhouettes from both upper and lower-class American fashion history further the juxtaposition of anti-capitalist slogans posted on luxury goods.
Bouis Vuitton: Bags for the Revolution is intended to embody an unapologetic disregard for established wealth and political power in the most public of venues: the sidewalk, the mall, the high and the low-income neighborhoods – wherever people are wearing clothes. Fashion is the modern protest that requires no permit, and the new poster is a luxury bag.
While taking a fashion technology course under the instruction of Galina Mihaleva, I developed a tracksuit incorporating concealed LED displays that are capable of scrolling customizable text on the sides of the garment. I expanded on this futuristic execution of politically charged clothes by utilizing a more realistic application of the LED technology in the Bouis Vuitton project. This project is a collection of six white vinyl bags with semi-flexible LED displays projecting revolutionary slogans through the vinyl textile.
The bags act as an appropriate housing for technology that is intended for significantly longer use, as bags have a longer lifespan in wardrobes than clothes and return to trend more frequently. The production investment in the technology is more equitable to the investment in the production of a bag and facilitates the wearer’s broadcasting of concise messages. The result is a collection of functional, utilitarian pieces with a clean, futuristic look and a mixed modern and vintage silhouette scrolling pro-revolutionary messages.
Broadcasting the knock-off name ‘BOUIS VUITTON’, I’ve inserted only my first initial into the reputable luxury company and paired it with slogans: ‘EAT THE RICH’ and ‘HEADS WILL ROLL’. The collection articulates a sense of nihilism felt by the youngest generations growing up on the outside of a very exclusive economic and political sphere. Three upcycled vintage luggage pieces evoke associations with the white American upper-class society of the 1960s. The luggage pieces were retrofitted in white vinyl and white-enameled metal fixtures. Three additional soft bags made of the same material reflect a utilitarian style of functional bags on trend with Spring/Summer 2019 streetwear. For the runway presentation of the bags, the models are dressed in navy-colored Dickies boiler suits, white retro-style Fila sneakers, and white ascots reminiscent of the historical male ruffled cravat. The contradictions of iconic silhouettes from both upper and lower-class American fashion history further the juxtaposition of anti-capitalist slogans posted on luxury goods.
Bouis Vuitton: Bags for the Revolution is intended to embody an unapologetic disregard for established wealth and political power in the most public of venues: the sidewalk, the mall, the high and the low-income neighborhoods – wherever people are wearing clothes. Fashion is the modern protest that requires no permit, and the new poster is a luxury bag.
ContributorsViton, Benjamin Douglas (Author) / Sewell, Dennita (Thesis director) / Mihaleva, Galina (Committee member) / School of Art (Contributor) / College of Integrative Sciences and Arts (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
Although the indigenous populations of the United States experience substantial disparities in health outcomes, little information is available regarding barriers to their access to specifically baby friendly hospitals and baby friendly services in the United States. Access is important because indigenous patients, especially women, have higher infant mortality and childhood obesity than their white counterparts.
This systematic review seeks to uncover potential barriers to baby friendly hospital services for indigenous patients in the United States. This systematic review analyzed the current literature from select databases published between 2000 and 2020 and narrowed literature down into studies deemed relevant because of their focus on the BFHI or equivalent and on indigenous patients. 303 studies were found using a specialized search string and then after evaluation under exclusion and inclusion criteria, 21 were identified for use in this review.
Analysis of these selected studies revealed trends of barriers as well as disparities in indigenous participation in current research. The conclusion of this review is that baby friendly and its “Ten Steps to Successful Breastfeeding” must be altered to allow for implementation in different cultural settings, especially for indigenous patients. Additionally, there is a need for additional research that focuses on indigenous patients in this setting and is written by members of that community. Increased representation from this community will enhance future work towards deconstructing the barriers preventing indigenous patients to access BFHI resources.
This systematic review seeks to uncover potential barriers to baby friendly hospital services for indigenous patients in the United States. This systematic review analyzed the current literature from select databases published between 2000 and 2020 and narrowed literature down into studies deemed relevant because of their focus on the BFHI or equivalent and on indigenous patients. 303 studies were found using a specialized search string and then after evaluation under exclusion and inclusion criteria, 21 were identified for use in this review.
Analysis of these selected studies revealed trends of barriers as well as disparities in indigenous participation in current research. The conclusion of this review is that baby friendly and its “Ten Steps to Successful Breastfeeding” must be altered to allow for implementation in different cultural settings, especially for indigenous patients. Additionally, there is a need for additional research that focuses on indigenous patients in this setting and is written by members of that community. Increased representation from this community will enhance future work towards deconstructing the barriers preventing indigenous patients to access BFHI resources.
ContributorsLindsey, Alyssa Estela (Author) / Schuster, Roseanne (Thesis director) / Hinde, Katie (Committee member) / School of Human Evolution & Social Change (Contributor) / Department of English (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Weed, pot, chronic, kaya, and kush are just a few names for one of the world’s most far-reaching and impactful substances. This course is designed with inclusive teaching devices for students to explore how the roots of economies, cultures, and histories have been intertwined with the subsistence of a plant. We will explore the biological and chemical nature of cannabis, historical accounts of human interactions with cannabis, production and industries, medicinal and recreational applications, legal and criminal ramifications, as well as future directions for legislation and economic opportunities. This class is intended to provide you with past research and facts, paired with coverage of events and movements happening today, so that you can make well-informed decisions for your future. The goal of this class is to motivate students to approach the topic of cannabis from various thought perspectives, so they can critically develop both life science knowledge and social science understandings regarding this polarizing subject. At the end of the course, students should be able to 1) Describe the basic anatomy and biology of cannabis plants, and the effects of psychoactive strains of cannabis on humans, 2) Explain the effects of cannabis on U.S. culture, as well as how U.S. culture has shaped the status of cannabis, 3) Differentiate evidence-based arguments from opinions and anecdotal positions, 4) Evaluate the interconnectedness of history, economics, criminal justice, and social contexts as they relate to cannabis, and 5) Demonstrate the ability to integrate evidence-based understandings into creating and disseminating knowledge through structured conversations and organized presentations.
ContributorsMitchell, Jordan (Author) / Hinde, Katie (Thesis director) / Regenold, David (Committee member) / Dean, W.P. Carey School of Business (Contributor) / Department of Psychology (Contributor) / School of Life Sciences (Contributor) / School of Human Evolution & Social Change (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
With the Latinx community anticipated to make up ~30% of the population by 2060, it will be crucial more than ever to mitigate the health disparities preventing them from equitable well-being. From a higher prevalence of obesity to better understanding mental health, there exists a myriad of challenges imposed against the community; however, its largest barrier is American hegemony. This is because their biases have exacerbated the public health system, preventing one from accessing their right to life, liberty, and the pursuit of happiness. As a result, intervention goals, most commonly through educational settings, fail to be met. One of the worst results: poor health literacy rates. Without proper health literacy skills, individuals lack the knowledge required to best manage their health. Unfortunately, the Latinx community is reported to have fewer strengths in terms of this; hence, Sana Sana was created. Through this magazine, the project intends to increase general healthy literacy, improve health trajectories, and promote overall well-being amongst Latino adolescents.
ContributorsZaldivar, Israel O. (Author) / Hinde, Katie (Thesis director) / Murphy, Ana (Committee member) / School of Life Sciences (Contributor) / School of Human Evolution & Social Change (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Behavior of males and females may be mediated by their biological differences and, among cercopithecines, their divergent reproductive strategies. In order to have high reproductive success, individuals need to produce high quality offspring. Through pregnancy, lactation, and maternal care, females have a strong influence on the quality of their offspring. Within the cercopithecine mating system, males are limited in direct influence on offspring outcomes within the Cercopithecines, and are adapted to more typically maximize mating opportunities. In general, female reproductive strategies involve securing the most food while male reproductive strategies are geared towards helping them secure the most fertile females both somatically and behaviorally. In this paper, I investigated how the behaviors observed among female adolescent rhesus macaque monkeys would differ from the males as their divergent reproductive trajectories begin to manifest. I made predictions based off of four questions: who would be more affiliative with whom, who would be more aggressive and with whom, who would be more variable in their behaviors, and who would be lonelier. I predicted that females would be more affiliative with other females, due to the importance of social connectivity, and males would be more affiliative with males, due to the social bonds male adolescents form with each other. I predicted that males would be overall more aggressive than males because they were found to be by Bernstein et al. (1993). I predicted that males would show more variation in behavior since they may have to be more flexible to capitalize on all conditions to obtain mates. Finally, I predicted that males would be lonelier as an effect of social rank on males and female choice. In order to further understand these differences, 36 adolescent Macaca mulatta, N = 20 female and N=16 male, from the California Primate Center at University of California at Davis, CA were observed. The observer used a standardized method to score the subjects on a variety of behaviors like locomotion, aggression, grooming and more. Each individual underwent around 6 trials and the observations lasted 15 minutes. The data supported the first hypothesis that females are affiliative with each other and males are affiliative with each other. The date also showed that females are more aggressive than males and their aggression is generally targeted towards females. The third prediction was not supported by the data and females were actually more variable in their behaviors than males. Lastly, the data did not support the prediction that males are lonely moneys, however, it did support the alternative hypothesis that they are truly low sociable, low in sociability and low social connectivity.
ContributorsVasquez Urias, Rubi (Author) / Hinde, Katie (Thesis director) / Johnson, Caley (Committee member) / School of International Letters and Cultures (Contributor) / School of Human Evolution and Social Change (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
Description
‘Describing at Large Their True and Lively Figure, their several Names, Conditions, Kinds, Virtues (both Natural and Fanciful), Countries of their Species, their Love and Hatred to Humankind, and the wonderful work of Natural Selection in their Evolution, Preservation, and Destruction.
Interwoven with curious variety of Creative Narrations out of Academic Literatures, Scholars, Artists, Scientists, and Poets. Illustrated with diverse Graphics and Emblems both pleasant and profitable for Students of all Faculties and Professions.’
ContributorsHinde, Katie (Author) / Amorim, Carlos Eduardo G (Author) / Anderson, Chris (Author) / Beasley, Melanie (Author) / Brokaw, Alyson F (Author) / Brubaker-Wittman, Laura (Author) / Brunstrum, Jeff (Author) / Burt, Nicole M (Author) / Casillas, Mary C (Author) / Chen, Albert (Author) / Chestnut, Tara (Author) / Coffman, Robin (Author) / Connors, Patrice K. (Author) / Dasari, Mauna (Author) / Dietrick, Jeanne (Author) / Ditelberg, Connor Fox (Author) / Drew, Josh (Author) / Durgavich, Lara (Author) / Easterling, Brian (Author) / Faust, Kaitlyn (Author) / Gabrys, Jennifer (Author) / Haridy, Yara (Author) / Hecht, Ian (Author) / Henning, Charon (Author) / Hilborn, Anne W. (Author) / Janz, Margaret (Author) / Josefson, Chloe (Author) / Karlsson, Elinor K (Author) / Kauffman, Laurie (Author) / Kissel, Jenna (Author) / Kissel, Marc (Author) / Kobylecky, Jennifer (Author) / Krell, Jason (Author) / Lee, Danielle N. (Author) / Lesciotto, Kate M (Author) / Lewton, Kristi L (Author) / Light, Jessica (Author) / Martin, Jessica Leigh, 1991- (Author) / Moore, Rick (Author) / Murphy, Asia (Author) / Murphy, Kaitlyn (Author) / Nickley, William (Author) / Nuñez-de la Mora, Alejandra (Author) / Pellicer, Olivia (Author) / Pellicer, Valeria (Author) / Perry, Anali Maughan (Author) / Popescu, Jessica (Author) / Rocha, Emily (Author) / Rubio-Godoy, Miguel (Author) / Rudzis, Cyn (Author) / Sarma, Mallika (Author) / Schuttler, Stephanie (Author) / Sinnott, Madeline (Author) / Stone, Anne C. (Author) / Tanis, Brian (Author) / Thacher, Abbie (Author) / Upham, Nathan (Author) / Varner, Jo (Author) / Villanea, Fernando (Author) / Weber, Jesse (Author) / Wilson, Melissa A. (Author) / Willcocks, Emma (Author)
Created2023-11-06
Description
While only the sixth most common cancer globally, liver cancer is the third most deadly. Despite the importance of accurate diagnosis and effective treatment, standard diagnostic tests for most solid organ neoplasms are not required for the most common type of liver cancer, Hepatocellular Carcinoma (HCC). In addition, major discrepancies in the practices currently in place limits the ability to develop more precise oncological treatment and prognosis. This study aimed to identify biomarkers, with potential to more accurately diagnose how far cancer has advanced within a patient and determine prognosis. It is the hope that pathways provided by this study form the basis for future research into more standardized practices and potential treatment based on specific affected biological processes. The PathOlogist tool was utilized to calculate activity metrics for 1,324 biological pathways in 374 The Cancer Genome Atlas (TCGA) hepatocellular carcinoma donors. Further statistical analysis was done on two datasets, formed to identify grade or stage at time of diagnosis for the activity levels calculated by PathOlogist. The datasets were evaluated individually. Based on the variance and normality of each pathway’s activity levels in the respective data sets analysis of variance, Tukey-Kramer, Kruskal-Wallis, and Mann-Whitney-Wilcox tests were performed, when appropriate, to determine any statistically significant differences in pathway activity levels. Pathways were identified in both stage and grade data analyses that show significant differences in activity levels across designation. While some overlap is seen, there was a significant number of pathways unique to either stage or grade. These pathways are known to affect the cell cycle, cellular transport, disease, immune system, and metabolism regulation.
The biological pathways named by this research depict prospective biomarkers for progression of hepatocellular carcinoma per subdivision within both stage and grade. These findings may be instrumental to new methods of early and more accurate diagnosis. The distinct differences in identified pathways in grade and stage illustrate the need for these new methods to not only look at stage but also grade when determining prognosis. Furthermore, the pathways identified herein have potential to aid in the development of targeted treatment based on the affected biological processes.
ContributorsGarrison, Alyssa Cameron (Author) / Buetow, Kenneth (Thesis advisor) / Hinde, Katie (Committee member) / Wilson, Melissa (Committee member) / Arizona State University (Publisher)
Created2022