The Impact of Diet Preference on Agricultural Productivity and the Environment

University of Minnesota M.S. thesis. November 2013. Major: Natural Resources Science and Management. Advisor: Jonathan Foley. 1 computer file (PDF); v, 45 pages.Worldwide demand for crops is increasing rapidly due to global population growth, increased biofuel production, and changing dietary preferences. Meeting these growing demands will be a substantial challenge that will tax the capability of our food system and prompt calls to dramatically boost global crop production. However, to increase food availability, we may also consider how the world's crops are allocated to different uses and whether it is possible to feed more people with current levels of crop production. Of particular interest are the uses of crops as animal feed and as biofuel feedstocks. We find that, given the current mix of crop uses, growing food exclusively for direct human consumption could, in principle, increase available food calories by as much as 70%, which could feed an additional 4 billion people (more than the projected 2-3 billion people arriving through population growth). Even small shifts in our allocation of crops to animal feed and biofuels could significantly increase global food availability, and could be an instrumental tool in meeting the challenges of ensuring global food security. We also illustrate how shifting even slightly away from beef and pork can reduce environmental impact by reducing the water footprints and greenhouse gas emissions associated with diets

Shear-induced microstructure in hollow fiber membrane dopes

Hollow fiber membranes offer the opportunity to dramatically reduce the energy required to perform gas separations in the chemical industry. The membranes are fabricated from highly non-Newtonian precursor materials, including concentrated polymer solutions that sometimes also contain dispersed particles. These materials are susceptible to shear-induced microstructural changes during processing, which can affect the characteristics of the resulting membrane. This thesis explores several shear-related effects using materials and flow conditions that are relevant for fiber spinning. The findings are discussed as they relate to membrane processing, and also from the standpoint of enhancing our fundamental understanding of the underlying phenomena. First, the effect of shear on polymeric dope solutions was investigated. Shear-induced demixing—a phenomenon not previously studied in membrane materials—was found to occur in membrane dopes. Phase separation experiments also showed that shear-induced demixing promotes macrovoid formation. The demixing process was found to depend not only on the instantaneous shear conditions, but also on the shear history of the solution. This suggests that low-shear flow processes that occur in the upstream tubing and channels used for fiber spinning can affect macrovoid formation. The effect of viscoelastic media on dispersed particles was also explored. Shear-small-angle light scattering results showed that particles suspended in membrane dope solutions formed aggregated, vorticity-oriented structures when shear rates in the shear-thinning regime of the polymer solution were applied. Shear rates well below the shear-thinning regime did not produce any structure. In fact, the application of a Newtonian shear rate to a sample already containing the vorticity structure caused the sample to return to isotropy. Measurements using a highly elastic, constant-viscosity Boger fluid showed that strong normal forces alone are not sufficient to form the vorticity structures, but that shear thinning is also required. Lastly, a study was conducted examining cross-stream migration of particles dispersed in viscoelastic media. Fluids exhibiting varying degrees of shear thinning and normal forces were found to have different effects on the particle distribution along the shear gradient axis in Poiseuille flow. Shear thinning was found to promote migration toward the channel center, while normal stresses tended to cause migration toward the channel walls. In addition to hollow fiber spinning, many other industrially relevant applications involve polymer solutions and suspensions of particles in viscoelastic media. Often, the properties and performance of the material depend strongly on the internal microstructure. The results from the research described in this thesis can be used to guide the design of materials and processing conditions, so that the desired microstructural characteristics can be achieved.Ph.D

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Representation of Characters by Gender across Video Game Covers of Different Ratings

This research was in response to the perception that females are under-represented in gaming culture. Pew Research Center (2015) found that both males and females thought more males played video games (60%). However, there is not a statistically significant difference in the percentage of males and females who have ever played video games (50% M 48% F). There is the perception that the advertising and production of video games contribute to the different stereotypes associated with men and women in gaming culture. According to research about gender and video game production, both male and female employees who work in the creation of content believe that women are underrepresented (Prescott & Bogg, 2011). This contributes to the idea of androcentrism, which is the practice of placing a masculine point of view as the center of a culture’s, and this is seen in many areas of gaming. In this project we examined the presence of and representation of males and females on video covers

Sleep Issues of Older Adults: Lived Experience and Occupational Performance

Introduction: Sleep issues are prevalent among older adults which can affect occupational performance; however, there is a gap in the research in examining lived experiences of this population. This research may provide insight into these areas concerning this population. Method: This qualitative phenomenological study was conducted via semi-structured interviews which were recorded. No identifiable information was collected during data collection. The inclusion criteria of the study sample were as follows: (a) aged 65 years or older; (b) have sleep issues or self-perceived sleep issues; (c) community-dwelling; (d) English is primary language; (e) live in West and Central Michigan. Exclusion criteria included those who have cognitive impairments (\u3c 24 on the Mini-Mental State Exam). Results: Participants of this study (N= 12; 4 male, 8 female) were older adults, ages 67 to 88 (M= 74; SD). Mini-Mental State Exam scores of participants ranged from 25 to 30 (M=27.83). Five main themes were constructed from the data using thematic analysis: health, routine, sleep experience, environment, and relationships. Conclusions: Older adults in this study perceived that sleep issues affected their occupational performance in areas related to health, routine, sleep experience, environment, and relationships. Additional research in this area is needed to build a better understanding of how to address the occupational performance of sleep with this population. Future research should include a more diverse, broader sample. This could include measuring sleep and sleep quality with objective measures relating to the themes of our study

The Political Personality of President Donald Trump in Office

Psychodiagnostically relevant data regarding U.S. president Donald Trump were collected from media reports published since his inauguration on January 20, 2017, and synthesized into a personality profile using the Millon Inventory of Diagnostic Criteria (MIDC). The poster summarizes the results of the at-a-distance psychological assessment

“It’s Loving Yourself for You”: Happiness in Trans and Nonbinary Adults

Expanding upon the larger body of literature that focuses on adverse mental health concerns among trans and nonbinary (TNB) populations, emerging research has recently begun to investigate positive outcomes and psychological well-being among TNB people. This study contributes to this growing area of research by investigating one subjectively experienced aspect of well-being—happiness—among TNB adults residing in the central Great Plains region of the United States. For this study, 20 TNB adults participated in semistructured interviews where they were asked to reflect on how they experienced happiness generally and in relation to being TNB, and what fostered or impeded their happiness. Data were analyzed using constructivist grounded theory analysis (Charmaz, 2014). Four major themes emerged from the data that formed the core components of happiness: Authenticity, Connection to Others, Perspective Shift, and Agency. Two additional major themes included factors that fueled happiness and those that detracted from happiness. Subthemes and categories within each major theme are described. From these themes, a theoretical model of TNB happiness was developed. Theoretical and counseling implications are discussed, along with noted limitations and areas for future research. Supplemental materials are attached below

Impact of a Student-teach-student Model for IPE Between Pharmacists and Dermatologists on Student Knowledge and Attitude

Introduction: The effective delivery of patient care is a complex venture, often requiring efficient collaboration among varied healthcare professions. Not surprisingly, research continues to indicate collaboration between these diverse professionals can be challenging. Early exposure of health professions students to interprofessional education (IPE) offers a promising way to improve this collaboration and, in turn, improve patient care and service delivery. Objectives: This study examines the impact of an innovative IPE cocurricular event on knowledge, understanding, and attitudes, regarding future healthcare delivery between medical and pharmacy students. Method: Students developed and conducted an IPE cocurricular event involving medical students of a dermatology-interest club, and pharmacy students of a compounding-interest club. Medical students introduced a patient case, delivered in a standardized-patient format. This was followed by a pharmacy student presentation representing compounding the prescriptions needed for the patient case and writing accurate prescriptions. Following both presentations, students from each program were paired.  Each interprofessional pair then communicated and compounded two medications for the case, working collaboratively.  Pre- and post-questionnaires were designed with rating scales and open-ended questions for data collection.  Results: Both parametric and nonparametric tests revealed significant differences between the pretests and posttests. There was no significant difference in responding between the groups. Inspection of the open-ended questions revealed changes in attitudes regarding collaboration and learning. Conclusions: This study found students of both professions reported significant improvements in their level of knowledge, understanding, and interest in interprofessional collaboration. The open-ended questions revealed both groups of students began the event with different expectations regarding cooperation and interprofessional activities but left the session with very similar perspectives. By including similar IPE activities in early healthcare education, medical students will gain an understanding of the knowledge, skills, and services that a compounding pharmacist can offer in personalized patient care, and pharmacy students will acquire clinical reasoning based on patient presentations. Both factors promote collaboration between professions and ultimately show promise in improving outcomes in patient care

Kate 2014 Spring

Each year, kate seeks to: explore ideas about normative gender, sex, and sexuality work against oppression and hierarchies of power in any and all forms serve as a voice for race and gender equity as well as queer positivity encourage the silent to speak and feel less afraid build a zine and community that we care about and trusthttps://digitalcommons.otterbein.edu/kate/1003/thumbnail.jp