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Torpor-Associated Thermoregulation and Appetite Regulation in Endothermic Mammals: A Concerted and Tailored Process
No full textLeptin and ghrelin are known anorexigenic and orexigenic hormones that are physiologically antagonistic to one another and have been suggested to play a role in torpor in endotherms. In this synopsis, I compare the effects of these hormones on regulating the physical events leading up to and during torpor/hibernation. In addition, I examine the coupling/uncoupling between metabolic and hypothalamic response and hormone regulation in the context of torpor-associated behavior
The Effects of Mental Health on Labor Market Consistency Across Racial Groups
No full textMental health issues affect many people in the United States every day. However, access and stigma surrounding mental healthcare varies across racial groups, causing some potential differences in treatment of mental health problems. Additionally, mental health has been found to decrease one’s productivity and presence in the labor market. This paper studies the relationship between mental health and the labor market among different races to see if mental health issues are manifested differently between racial groups in employment settings. The results of the study find no difference between the reference White group and Black or Native/Other groups but there is evidence of a potentially larger effect with each additional poor mental health day on Asian and Latinx people’s employment. Cultural factors such as a lack of willingness to take time off of work or pride and machismo may be amongst the reasons for these differences
Climate change induced mismatches between various predator-prey interactions in different life stages of the anadromous Pacific salmon (Oncorhynchus spp.)
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Solutions to the Affordable Housing Crisis
No full textThe affordable housing crisis has impacted the lives of millions of Americans throughout the United States. In attempts to reconcile this issue, both local and federal governments have taken steps to implement potentially beneficial legislature. This paper seeks to examine zoning legislature and its relationship with affordable housing. It begins with a review of the literature of the negative effects of specific zoning policies and their enhancement of the affordable housing crisis. The discussion then shifts to the role zoning policies play in restraining the affordable housing crisis. It does so through careful examination of the literature revolving around the controversial effects of potentially beneficial zoning policy implementations such as inclusionary zoning or upzoning. After mentioning examples of other policy alternatives to the affordable housing crisis, the author will present their argument for upzoning as the leading policy choice through the use of both economic theory and evidence from economic literature
Is a Dollar Worth a Thousand Words? Visualizing the Connections Between U.S. Congress Members’ Funding and Speech
No full textFollowTheMoney is a web application that enables the exploration of the relationships between funding sources and speech topics for members of the 117th United States Congress. These relationships are visualized in the form of Sankey diagrams, which the flows of money from donating industries to congresspeople and the flows of speech from congress people to topics. FollowTheMoney uses data on campaign funding broken down by industry gathered from OpenSecrets, statements made on the floor of Congress collected from the Congressional Records, and tweets for each congressperson pulled from Twitter. To extract and quantify the topics contained in the statements and tweets, we used a Latent Dirichlet Allocation (LDA) topic model, assigning each document to a particular topic. We hope that FollowTheMoney\u27s intuitive, simple interface can help a broad audience understand better how campaign contributions influence what politicians talk about
Treasury Buybacks, the Fed\u27s Portfolio, and Local Supply
Get PDFThe U.S. Department of Treasury has announced plans to revive its buyback program after more than two decades. We estimate the effects of the 2000-2002 Treasury Buyback program on Treasury returns and the Federal Reserve\u27s System Open Market Account (SOMA) portfolio. The reduction in supply from the buybacks had significant effects on both the bonds purchased by the buybacks and bonds with similar remaining maturity. Changes in supply contributed about 90 basis points to price returns over the course of the program -- nearly 1/5 of the overall change in prices. At a higher frequency, prices of purchased bonds and their near substitutes tended to change on settlement dates, not auction dates. We find that the Fed\u27s holdings of individual securities were largely unaffected over the course of the buyback program. This is consistent with the Fed attempting to avoid exacerbating supply shortages in Treasury markets
The Hidden Falls Member: Lithostratigraphy and Depositional Insights Into the Platteville Formation, Southeastern Minnesota
No full textThe Middle Ordovician Platteville Formation of southeastern Minnesota has historically been understudied since its initial identification. The Hidden Falls Member of the formation is a dolomitic bed with a high insoluble content and a distinct recessive notch in outcrops. It displays unique physical and hydrostratigraphic properties in its conchoidal fracture, and the way it acts as an aquitard within the regional carbonate aquifer. This study of the Hidden Falls Member aims to fill a void in the geologic history of Southeastern Minnesota, as no explanation has been provided for its deposition and the irregular behavior of the member. I use petrographic and microscopy techniques to elucidate the post-depositional history of the bed in order to examine the alterations that have occurred in the region. Petrographic analysis of the member has revealed a large (\u3e25%) content of K-feldspars. These K-feldspars are of mixed detrital and authigenic origin; in conjunction with the secondary dolomite of the bed they tell the story of a unique sequence of multiple enrichment and/or recrystallization events. Primary sediments were initially altered and re- precipitated as dolomite before secondary enrichment. I propose a Mississippi Valley-type (MVT) event which introduced authigenic K-feldspar as rims on in situ detrital grains and as interstitial microcrystalline grains. This MVT deposit also precipitated pyrite as a secondary mineral to the member, forming euhedral crystals and replacing calcite in fossil fragments. Further isotope analysis of secondary K-feldspar crystals is necessary in order to confirm the presence of a MVT deposit and link it to known fluid enrichments
