JBC Commons (New College of Florida)
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Forward modeling high-resolution observations of solar granulation from radiative MHD simulations
No full textRadiative magnetohydrodynamic (MHD) simulations of the upper solar convection zone and photosphere have important applications for studying solar atmospheric dynamics. Forward modeling via spectral line synthesis is necessary to directly compare MHD simulation output to real observational signatures of solar granulation. In this thesis, the instrumental effects of the Sunrise Imaging Magnetograph eXperiment (IMaX) are modeled and applied to spectral lines synthesized from the Max Planck Institute for Solar System Research University of Chicago Radiative MHD (MURaM) simulation. It is demonstrated that the synthetic data reproduces the observed vertical velocities and continuum intensities of granulation to some extent, but not to the extent of previously published studies. Inconsistencies in the Sunrise telescope’s pointing are shown to be an ill-constrained parameter in the observation synthesis. Granule sizes are found to be strongly dependent on the presence of solar acoustic oscillations within the IMaX observations. The results provide important insights into the limitations and challenges of forward modeling observations of solar granulation from radiative MHD simulations. These insights will be invaluable to future studies which aim to synthesize observational data from the Daniel K. Inouye Solar Telescope (DKIST)
성장통(GROWING PAINS): ANIMATING THE INTERSECTION OF EARLY MENARCHE AND THE MODEL MINORITY STEREOTYPE ON ADOLESCENT DEVELOPMENT
No full textAdolescence, particularly the onset of puberty, is a critical window in which a host of physiological and psychological changes occur, creating a stressful environment for adolescents. Due to the different hormonal changes in puberty in males and females, this window could have different outcomes based on sex. For females, the age at which first menstrual cycle begins, known as menarche, has fallen in recent decades. Critically, early menarche has been linked to negative mental health outcomes. Puberty is also associated with social and cultural challenges that can create a vulnerable period exacerbated by biological changes. One such social pressure is cultural expectations specific to members of racial minority groups. A unique racial stereotype is the Model Minority Stereotype, or the assumption that Asian individuals are smarter, more hard-working, and more docile than their non-Asian counterparts. The present study is designed to explore the intersection of the Model Minority Stereotype status, sex, and early menarche on mental health outcomes. A survey was distributed via Prolific, and 186 participants completed the study. Results showed that while that there was a significant sex difference in anxiety and depression, with females higher than males, Asian identity did not interact with that effect. There was a slight trend towards higher depression and anxiety scores with earlier menarche. Further, for Asian women, not non-Asian women, earlier menarche was associated with worse mental health outcomes. Contrary to expectations, there was an inverse trend in Model Minority experiences and mental health scores. This may show that Asian females face distinct risks in mental health, potentially exacerbated by early puberty. Culturally attuned behavioral therapy and pubertal education are posed as ways to treat and support individuals experiencing mental health issues as a result of these factors
THE EFFECT OF BREVETOXIN ON CLAMS USING METABOLOMICS
No full textAlgal blooms are a worldwide issue. They are normally influenced by excess nutrients in the environment, but can have many causes. One algal bloom on the Gulf Coast of Florida is Red Tide, caused by the dinoflagellate Karenia brevis. This algal bloom produces toxins called brevetoxins, which can kill marine organisms, and cause respiratory irritation and other symptoms in mammals. The Northern Hardshell Clam (Mercenaria mercenaria) is one marine species that is affected by brevetoxins and can be an affective bioindicator in an ecosystem. However, there is limited research on the chemical impact that brevetoxins have on clams, especially utilizing metabolomics. Based on this, 70 Northern Hardshell Clams were exposed to varying levels of the brevetoxin PbTx-2 from 0.1 ppb to 10 ppb over a period of 24 hours. 1H NMR spectroscopy was used to analyze the metabolites in the clams digestive gland that were affected by the toxins. The results showed that, in the digestive gland five metabolites were significantly changed, though most in only one test group. Comparatively, the gill sample data had 14 metabolites significantly changed, with five of them being significant in four or more groups. Based on this, a longer PbTx-2 testing period is needed to see a larger difference in the digestive gland metabolites
SCARS ON AN HOURGLASS
No full textThis collection of experimental lyric poetry titled Scars on an Hourglass and its accompanying Artist’s Statement follow an unnamed female narrator in the aftermath of a fictionalized sexual assault. The structure takes the shape of an hourglass and foregrounds the seasons winter and spring. This collection, inspired by the process of travel, the creation of notebooks featuring collage art and handwritten excerpts, and my experiences within rape culture, is divided into two sections. “Winter,” with short experimental poems uses language to highlight harsh, blue-tinged imagery that conveys themes of identity, assault, and loss. “Spring” places emphasis on images of rebirth and nature as the narrator’s relationship with the typography of the page, others, and herself changes. Using the craft techniques of imagery, syntax, structure and form, pronoun choices, experimental punctuation, and voice, the narrator explores her world, ideas of healing, and temporality. Works by authors Layli Long Soldier, Justin Phillip Reed, Clarice Lispector, the anthologies By Herself, Gurlesque, and )((Eco(Lang)Uage(Reader)) were consulted, along with craft texts including A Primer for Poets & Readers of Poetry by Gregory Orr, The Anti-Racist Writing Workshop by Felicia Chavez, and the anthology Language Awareness: Readings for College Writers
EFFICACY OF AN INEXPENSIVE FLOW PUMP FOR FLORAL VOLATILE SAMPLING
No full textThis study examines one of the only low-cost vacuum source alternatives to expensive, commercial air samplers. The study utilizes common or easily sought materials to construct a DIY (Do It Yourself) air sampler with a total cost of $375.83. A GC-MS (gas-chromatography mass-spectrometer) was used to analyze floral volatile samples from eight orchid species and three hybrids. Standardized emission rates were calculated from the gas chromatograms for each sample and compared with each other based on the method. It was found that the DIY method and commercial air sampler did not differ significantly from each other when observing mean emission rate differences within specimens. However, once sampling order and hybrid status were considered, the commercial one tended to outperform. It is recommended that in future studies, the DIY sampler incorporates a regulatory valve to provide consistent airflow. To eliminate the effect that hybrids had on differing emission rates, this study should be performed only on true species
In the Luster of Flame, the Vulture Disguises Himself as the Phoenix: Climate Induced Catastrophe Response, Rescue, & Relief
No full textOn August 13th, 2004, Hurricane Charley made a direct impact on the south-west coast of Florida. A category 4 storm, Charley devastated the unprepared coastal communities in Charlotte County, Fla. Nearly 20 years later, when Hurricane Ian took a similar path, we witnessed a region still rendered vulnerable by damage inflicted almost two decades earlier, get nailed again. Yet, somehow these communities fared much better than they did in 2004. Thus, studying the decisions made in the wake of the 2004 storm in the response stage may help us understand how and why particular areas were impacted differently by the 2022 storm. This difference can be attributed to not just the quirks of nature, but to the Post-Charley preparation and actions of citizen organizers and the efforts made to integrate government and civilian disaster response in Charlotte County. These actions include: the establishment of local coalitions and volunteer networks; public out-reach efforts; and pre-disaster mitigation strategies. Structured around the ethnographic interview, this thesis focuses on an examination of the role of localized civil society, and the importance of interactions and collaborations between its diverse array of actors, including institutions of local, state, and national government. The success of these interactions are the means by which the needs of victims are supported in the initial moments of relief, as well as setting the stage for the rest of the recovery process
APPLICATIONS OF NEWTON\u27S LAWS TO VARIABLE MASS SYSTEMS
No full textWe develop a pedagogical framework for treating variable mass systems in classical mechanics with the aim of explaining the difference between two rope systems: a rope sliding off a table versus falling from a coil. We have seen that energy is conserved in the former, but not the latter, and we explore this difference in several ways. We explicitly solve for the dynamics of both systems using energy conservation and momentum analysis before employing the Cauchy continuum equation to explore discontinuities in tension profiles as a source of inelasticity, leading us to explicitly compute the energy loss in the second system. Finally, we examine the presence of time-reversal symmetry in the context of elastic and inelastic processes
DIURNAL CORTISOL, MOOD, AND HORMONAL CONTRACEPTIVES: AN EXAMINATION OF THE DIFFERENCES IN DIURNAL CORTISOL PATTERNS AND MOOD BETWEEN HORMONAL CONTRACEPTIVE USERS AND NON-USERS
No full textCortisol is a steroid hormone that plays a role in the physiological response to stress. One standard pattern of cortisol change is the diurnal rhythm which peaks in the morning and declines throughout the day. Disruptions in this pattern are linked to chronic stress and poorer mental health outcomes. Previous research has found blunted cortisol responses as well as increased stress and depressive scores in hormonal contraceptive (HC) users compared to non-users. Yet little is known about the effect of HC use on average diurnal cortisol patterns. The goal of this study is to examine differences in diurnal cortisol pattern and mood between HC users and non-users. Twenty-seven individuals assigned female at birth were recruited with about half using HCs. Participants came to the lab three times a day (i.e., morning, afternoon, and evening), once a week, across three weeks for a total of nine sessions. At each session they completed a questionnaire with mood surveys and gave a salivary sample. Mixed ANOVAS were conducted for both mood variables and cortisol levels. There was no main effect of HC use on Mood. HC-users were found to have a lower average morning cortisol level compared to non-users. Future research should continue to explore the effect of hormonal contraceptives on hormonal physiology associated with behavior and, more broadly, on important life outcomes related to mental health, responses to stress, and social functioning
Indigenous Land Back Movements as Response to Dispossession: The Zapatista Case in Comparative Perspective
No full textThis senior project is a multimedia approach to demonstrate how Indigenous peoples have been dispossessed of their lands and show that their land grab efforts are their response to such dispossession. Through an exploration of Indigenous history in the United States and Canada I explain the way primitive accumulation is pursued through support of the state and leads to the dispossession of Indigenous peoples from their land. I also explore the relationship between the state and the Zapatistas of Chiapas Mexico and show that their movement is a call for land back, similar to what is observed in the United States and Canada. The first half of the project is a paper on the Zapatista uprising and the second half is a podcast that explains primitive accumulation, how it impacts Indigenous peoples\u27 relationship with the state, and connect the Zapatistas with the Indigenous struggles in the United States and Canad
Through a Christian Lens: The Power of Music Videos to Rock and Shock. An Analysis of Gender Identity and Queerness through the Music Videos of Lady Gaga, Lil Nas X and Lucina Wolf-Brown
No full textAmerican popular culture, especially American popular music, is a dominant source of media, both as entertainment and information, for much of the world. As such, the more recent genre of music videos, combining songs with visual storytelling, has added to the power of popular music to make lasting and oftentimes controversial statements through this combination of audio and images, especially by adopting and claiming symbols and themes commonly found outside the popular music realm and associated with seemingly unrelated audiences and values. This thesis will compare the “sacrilegious” music videos of Lady Gaga and Lil Nas X to analyze and deconstruct the themes of Christianity, gender binaries, and queerness present in their work, and their subsequent use of Christian symbols as shock value both as commentary and as a story-telling device. These videos demonstrate how both popular artists use Christian themes, often associated in American politics with conservative values, to incorporate shock value into their work and the role it plays in not only in capturing attention. But also, in conveying socially progressive, provocative, and even controversial ideas, including ideas that bring gender identity and queerness into the mainstream discussion. These aspects reflect not only the artists’ personal beliefs and struggles with issues like identity, but also make statements that address the influence of Christianity on American culture and politics. Their focus on Christian symbols and themes calls into question who has claim to these symbols, for what purpose, and the assumptions of the meaning inherent in those symbols to include or exclude. In other words, questions of who will be saved, who is a “sinner,” and who is worthy plays out in a larger societal and political context. Finally, I examine the artists\u27 use and interpretation of these concepts in various music videos, such as Lady Gaga’s “Alejandro” music video, and Lil Nas X’s “Montero”