The relevance of depression in the clinical realm is well known, as it is one of the most common mental disorders in the United States. Clinical depression is the leading cause of disease for women worldwide. The sex difference in depression and anxiety has guided the research of not just recent studies but older studies as well, supporting the theory that gonadal hormones are associated with the mechanisms of emotional cognition. The scientific literature points towards a clear correlative relationship between gonadal hormones, especially estrogens, and emotion regulation. This thesis investigates the neural pathways that have been indicated to regulate mood and anxiety. Currently, the research points to the hypothalamic-pituitary-adrenal axis, which regulates the stress response through its ultimate secretion of cortisol through the adrenal cortex, and its modulated response when exposed to higher levels of estrogen. Another mechanism that has been investigated is the interaction of estrogen and the serotonergic system, which is noteworthy because the serotonergic system is known for its importance in mood regulation. However, it is important to note that the research seeking to determine the neurobiological underpinnings of estrogen and the serotonergic system is not expansive. Future research should focus on determining the direct relationship between cortisol hypersecretion and estrogens, the specific neurobiological effects of serotonergic receptor subtypes on the antidepressant actions of estrogens, and the simultaneous effects of the stress and serotonergic systems on depressive symptoms.

Due to what is known as the “biologically desert fallacy” and the pervasive westernized ideal of wilderness that has influenced widespread American Conservation culture for millennia, urban areas have long been deemed as areas devoid of biodiversity. However, cities can contribute significantly to regional biodiversity and provide vital niches for wildlife, illuminating the growing awareness that cities are crucial to the future of conservation and combating the global biodiversity crisis. In terms of the biodiversity crisis, bats are a relevant species of concern. In many studies, different bat species have been broadly classified according to their ability to adapt to urban environments. There is evidence that urban areas can filter bat species based on traits and behavior, with many bats possessing traits that do not allow them to live in cities. The three broad categories are urban avoiders, urban adapters, or urban exploiters based upon where their abundance is highest along a gradient of urban intensity. A common example of an urban exploiter bat is a Mexican Free-tailed bat, which can thrive and rely on urban environments and it is found in the Phoenix Metropolitan area. Bats are important as even in urban environments they play vital ecological roles such as cactus pollination, insect management, and seed dispersal. Bat Crazy is a thesis project focused on urban enhancement and the field of urban biodiversity. The goals of this thesis are to observe how bio-conscious urban cities that work to promote species conservation can serve as a positive tool to promote biodiversity and foster community education and engagement for their urban environment.

This narrative literature review explores how perceived stress affects sleep quality in dementia caregivers by examining various factors. Ten studies from 2013 to 2022 across four continents were analyzed, focusing on caregiver stress levels, sleep quality, caregiver burden, and depression. Higher stress levels were linked to poorer sleep quality, alongside factors like emotional distress and disrupted sleep patterns. The findings highlight the importance of targeted interventions to reduce stress and improve sleep quality among dementia caregivers, suggesting the need for longitudinal and empirical studies with standardized measures for a better understanding.

Reasons to Stay Alive is a short story that follows the protagonist, Corinne Larson, and her experiences with depression and anxiety as well as self-harm and suicidal ideations. It is meant to act as an antithesis to media that romanticizes suicide, such as the television show 13 Reasons Why (2017), and instead glorify growth and healing. Specifically, it focuses on the importance of social support in the healing process. The story is separated into three different formats: narrative, letter, and free-verse poetry. It is prefaced by a poem titled ‘death by suicide’ that discusses the stigma around suicide and the reason why the phrase ‘commit suicide’ was changed to ‘death by suicide’. The story then starts with a letter written by Corinne to her future self during a time she was really struggling with depression and self-harm and suicidal ideations. It is a plea with her future self to tell her everything will be alright. The rest of the story is broken into four parts, each about a specific and important person in Corinne’s life. Each part starts off as a first person narrative from Corinne’s point of view and is a memorable experience she had with each person and ends with a short letter addressed directly to each person. The letters are a chance for Corinne to tell each person how important they are to her, how they made an impact in her life, and how they gave her a reason to stay alive. Between each part is a poem that deals with different themes relating to depression or anxiety. The story ends with a letter written by Corinne to her future self that goes back and addresses the first letter. It gives past Corinne some words of advice and tells her that her reasons to stay alive are the important people in life as well as herself and the person she will become.

Early detection of disease is essential for alleviating disease burden, increasing success rate and decreasing mortality rate especially for cancer. To improve disease diagnostics, many candidate biomarkers have been suggested using molecular biology or image analysis techniques over the past decade. The receiver operating characteristics (ROC) curve is a standard technique to evaluate a diagnostic accuracy of biomarkers, but it has some limitations especially for heterogeneous diseases. As an alternative of the ROC curve analysis, we suggest a jittered dot plot (JDP) and JDP-based evaluation measures, above mean difference (AMD) and averaged above mean difference (AAMD). We demonstrate how JDP and AMD or AAMD together better evaluate biomarkers than the standard ROC curve. We analyze real and heterogeneous basal-like breast cancer data.