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The Impact Of Interactions Among Native Grassland Species: A Study Of Interactions Between Two Invasive Species (Bromus Tectorum And Setaria Faberi) And Two Native Species (Helianthus Annuus And Rudbeckia Hirta), Nash Leef

Department of Environmental Studies: Undergraduate Student Theses

Allelopathy is a description of an interaction between two plant species, usually negative, that impacts their growth or germination. There has been ample data published regarding the impact of allelopathic species in agricultural settings, but little attention has been given to the potential interactions between invasive and native species. Two culprits that have employed allelopathy to great effect in agricultural settings are cheatgrass (Bromus tectorum) and giant foxtail (Setaria faberi). This study posits that allelopathic interactions, similar to those found in agriculture, are occurring between native and invasive species on the Great Plains.

A set of greenhouse trials was established …

Biodegradable Active Bio-Nanocomposite Film For The Enhanced Shelf Life Of Tomatoes, Kalpani Y. Perera, Shubham Sharma, Brendan Duffy, Amit K. Jaiswal, Swarna Jaiswal

Articles

The increased environmental pollution has led to finding sustainable solutions for non-renewable plastic-based food packaging materials. Thus, the use of biomaterial-based packaging material has become an immense trend. This work aims at developing an antimicrobial biodegradable chitosan-alginate bio-nano composite film with TiO2 nanoparticle (NPs) for food packaging applications. The film was developed by a solution casting method. The chemical, mechanical, thermal, barrier, antimicrobial, and biodegradable properties of the packaging films were evaluated. Packaging studies were performed for 15 days for cherry tomatoes. The designed packaging material had enhanced the mechanical properties with a significantly (p < 0.05) higher tensile strength of 15.76 folds and 2 fold higher elongation at break. The UV barrier properties increased by 88.6%, while the film transparency decreased by 87.23%. Molecular interaction of N-H covalent bonds was observed between alginate and chitosan together with TiO2 NPs. The developed bio-nano composite film showed antimicrobial activity against foodborne pathogens E. coli, S. aureus, S. typhi, and L. monocytogene with a log reduction of 7.08, 7.28, 6.04 & 6.02 log CFU/ml respectively at 24 hours incubation period. The film was completely biodegraded and a weight loss of 89.06% was observed in bio-nanocomposite film during the 3 months. Shelf-life estimation of cherry tomato using developed packaging films showed an increase in the shelf-life up to 8 days with stable pH, total soluble solids, and weight with no bacterial growth when packaged with prepared film. Owing to their improved mechanical, UV barrier, antibacterial, and biodegradability, the prepared active bio-nano composite packaging films could be considered a potential candidate for fruit packaging.

Preparing New Nurses To Improve The Systems In Which They Work: A Matter Of Degree Or Skillset?, Franco Herrera

Theses

The multitude of players, rules, and economic factors involved in organizing and delivering healthcare in the US today requires a highly skilled workforce, who can go above and beyond excellence at the practitioner level by acting as change agents to continuously improve the systems in which they work. Early acquisition of quality and safety competencies, along with leadership and inter-professional collaboration, systems thinking, and health economics are essential for preparing new nurses for the demands of their future jobs. Using these competency domains as a framework for evaluation, the purpose of this descriptive study was to examine program coordinators' assessments …

Children's Choir, Spring Concert, May 9, 2022 [Program], University Of Northern Iowa. School Of Music.

Music Recital Programs

Program of a music recital given by faculty, students, or guest artists from the School of Music at the University of Northern Iowa.

Yager Selected For A Nasa Space Technology Graduate Research Opportunities Fellowship Award, Alicia Rohan

Browse All News

No abstract provided.

When Ceo And Board Chair Are In Conflict: A Resource Dependence Perspective, Rawia Ahmed, Randika Eramudugoda, M. Fernanda Wagstaff

All Works

The board of directors serves two functions in the organization: monitoring and resource provision. Agency theory mainly addresses the former, while resource dependence theory focuses on the latter. However, these theories consistently assume that board members are not only able but also consistently willing to fulfill their roles. From a resource dependence perspective, this means that board members are generally inclined to share their resources (information, social and political connections, and functional experience) with the CEO. We challenge this assumption by postulating that in the context of dyadic conflict between the CEO and board chair, these resources will not be …

All-Sky Search For Gravitational Wave Emission From Scalar Boson Clouds Around Spinning Black Holes In Ligo O3 Data, R. Abbott, H. Abe, F. Acernese, Michael G. Benjamin, Teviet Creighton, Mario C. Diaz, Francisco Llamas, Soma Mukherjee, Gaukhar Nurbek, Volker Quetschke, Wenhui Wang

Physics & Astronomy Faculty Publications

This paper describes the first all-sky search for long-duration, quasimonochromatic gravitational-wave signals emitted by ultralight scalar boson clouds around spinning black holes using data from the third observing run of Advanced LIGO. We analyze the frequency range from 20 to 610 Hz, over a small frequency derivative range around zero, and use multiple frequency resolutions to be robust towards possible signal frequency wanderings. Outliers from this search are followed up using two different methods, one more suitable for nearly monochromatic signals, and the other more robust towards frequency fluctuations. We do not find any evidence for such signals and set …

Design Diplomacy - Cooperative Living, Kameren Horton

Bachelor of Architecture Theses - 5th Year

From 1990 through 1996, we witness a significant shift within the city of Atlanta. In the Summer of 1996, the Olympics was hosted in Atlanta. Techwood Homes at the time, was the first large affordable housing project in that area. In 1991, there was an order for the demolishment of Techwood Homes. However, it wasn’t until 1995, when the Atlanta Housing Authority (AHA) decided to begin demolition after waiting 4 years prior to the Olympics.

Several other large housing projects were demolished to make room for Olympic venues. This is where we see redevelopment. This is where we see a …

Reconnecting A Disconnected City : Through Placemaking Strategies, Gabriel Arroyo

Bachelor of Architecture Theses - 5th Year

My thesis is motivated by a growing interest in our urbanized landscapes and their effect on social behavior. Developing a term that refers to a places lack of engagement with the people it serves, aids in capturing the necessity of a project like this today. The modern era of today’s cities have unconciously enabled this term “Placelessness”, this lack of a defined sense of place, be a recurring problem due to urban sprawl, economic imbalances, and technologies negative influence on social patterns. Our public assets are losing distinctive characteristics such as its Identity, Belonging, and Coherence; thus, amplifying the notion …

Seaport City Adaptation: Buenaventura's Settlements, Mariana Corredor

Bachelor of Architecture Theses - 5th Year

Buenaventura is one of Colombia's most important cities, it houses one of the biggest ports on the continent and covers more than 60% of Colombia's sea imports and exports. Unfortunately, most of the population is impoverished and lives in improvised shelters made up of wood, trash, and debris with no access to potable water, electricity, and sewage systems. How can architecture be used to create better conditions? How can we use local materials in Colombia to design affordable and aesthetically pleasing settlements for the inhabitants of Buenaventura?

My research starts with materials that are sustainable, economical, local, and recyclable, that …

Equity In Healthcare Design: Sustainable Placemaking Interventions For Refugees And Displaced Communities, Eunji You

Bachelor of Architecture Theses - 5th Year

Since 1990, the city of Clarkston has brought thousands of refugees from Asia, Africa, South America, and beyond. Now, roughly half of the population constitutes refugees that represent 60 different languages and nationalities. In Clarkston, a sustainable healthcare facility is integral for the design of a family-centered medical facility to promote health equity by providing access to care at all levels. Infant mortality is rising amongst minority groups, and advanced care for adults and children of all ages and disabilities in low-income areas is becoming more inaccessible. The design of the healthcare facility aims to strengthen racial-ethnic minority groups in …

Facilitate Learning: Using Architecture As A Teaching Tool, Doron Zarur

Bachelor of Architecture Theses - 5th Year

This thesis proposes a new design for an architecture school that looks beyond the verbal and formal way of teaching, engaging students with multiple modes of learning to help them understand the fundamentals of architecture. The thesis looks at the positive impact of this new learning style - providing spaces that visually teach the construction and concepts of building, the foundation of architecture. This research explores visually providing various types of structures in the same space that students learn, strengthening the learner’s understanding and enabling a broader perspective of the content. It also can lead to better solutions for design …

Diy; Strategic Sustainable Homes Rethinking Ghana's Housing Crisis, Michelle Leal

Bachelor of Architecture Theses - 5th Year

The irony is that a profession that is responsible for cratering to one of the most basic human needs, is so economically out of reach for those in developing countries such as Ghana. Africa's housing already insufficient and continues to be expensive and not meeting the soaring demand, leads to the continent to face a housing crisis. This problem either leads people to become homeless or are forced to move into neglected unsanitary areas. The intent of my thesis is to provide a DIY; sustainable strategy home in which the locals learn and benefit from building a permit eco-friendly home. …

Vida: Community Center In The Heart Of Bogota, Juan Sebastian Mejia Ceballos

Bachelor of Architecture Theses - 5th Year

Abstract

Bogota is the capital of Colombia known for its beautiful culture, architecture, music, food, ambiance. All these things are only seen in the northern portion of the city. When looking at the southern portion of the city, this is where the true neglect of a government shows. There is a lack of care, love, and respect for a city. It is noticeable that there is hierarchy where the elite live in the north and the poor live in the south.

This is the first issue addressed in this thesis.

When looking at the city and its relation to the …

Tensegrity - Is It A Bridge? Buiding? Skin?, Freddy Portugal

Bachelor of Architecture Theses - 5th Year

Tensegrity is an amazing concept in which it can look asthetically pleasing as well of having the structural strength to create long and short spans. It is a concept that hasnt been around too many years and its something not many people know about. Im hoping to educate you on this thesis and show how great it is to explore a new structure.

Study Shows Greater Increase In Depression And Anxiety In Minorities During The Pandemic, Brianna Hoge

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No abstract provided.

Transformative Partnerships: Expanding Extension’S Capacity To Support Texans With Developmental Disabilities, Andrew B. Crocker, Morgan D. Bradley, Shelby D. Vaughn, Beth Stalvey

Journal of Extension

New partnerships to reach new audiences are key to Extension’s future (Harder, 2019). But partnership is enhanced through shared decision-making, co-creation of content, and leveraging non-overlapping expertise and experience (Bertsch et al., 2020; Israilov & Cho, 2017; Ostrom, 1996). Texas A&M AgriLife Extension Service partnering with the Texas Council for Developmental Disabilities provides a novel approach to using statewide presence to the benefit of a partner seeking to expand its footprint (Alford, 2014; Ostrom, 1996) and is, itself, an outcome (Voorberg et al., 2015). Additionally, Texans with disabilities benefit through greater access to the education and resources the partnership produces.

Extension And Tourism: Previous Efforts, Current Trends, And The Future, Doug Arbogast, Daniel Eades, Stephan Goetz, Yuxuan Pan

Journal of Extension

This study highlights the results of a national survey of Extension land-grant and sea grant professionals designed to better understand their involvement in state/regional tourism programming and their perceptions of tourism related opportunities and challenges. This study demonstrates the breadth and importance of Extension’s tourism programing and continued challenges including limited investment and commitment by state institutions and the larger CES for core tourism program offerings. Investments in tourism programing are recommended as a way for Extension to maintain its relevancy, and better engage and address the community and economic development needs of traditional and emerging audiences.

Design For Our Lives! Defensive Design Strategies For School Shootings, David Wolf

Bachelor of Architecture Theses - 5th Year

Viewer Discretion is advised. This thesis serves to analyze tragedies that have been running rampant in America since roughly the 90s. Looking at them from an architectural standpoint and how design elements incorporated into the modern way schools are design can create a safer environment for the students and staff alike.

Lungs Of The City: B[Re]Athe - Exploring How Architecture Can Improve Air Quality, Jessica Rimmel

Bachelor of Architecture Theses - 5th Year

One of the most critical elements for survival is air. Air pollution and air quality are often seen as an issue that needs widespread intervention to make a difference. It becomes a problem that people think is too big for them to make any meaningful change. There is a lack of education and acknowledgment of the quality of the air we breathe every day. Prolonged exposure to pollutants in the air can lead to lasting negative effects on one’s health. Air pollution affects our communities disproportionately, the young, the aging, and minority community members are especially susceptible to being exposed …

Airtime: Integrating Acoustics Into The Design Process, Daniel Richardson

Bachelor of Architecture Theses - 5th Year

Background

As part of the sensory experience, acoustics serves an important role in facilitating the social functions of a space. The acoustic response of a space plays a part in determining its social atmosphere, as well as how it functions for certain occupancies (eg. clarity in a classroom, projection on a stage, fullness in an orchestra). The acoustics of a space is determined by the assembly and materials of its envelope, as well as the occupation within. Commonly, specific acoustic solutions like panels, foam, or sound batt insulation are used to manage or treat the acoustic qualities of a space. …

Art For Healing: An Exploration Of Spaces To Facilitate Arts For Therapeutic Healings, Ana Gabriela Hernandez Delgado

Bachelor of Architecture Theses - 5th Year

Mental health is a complex and ever evolving State of being that architecture and technology play an important role in. For women, some of the ways that depression comes about is when we go through life-changing events. Giving birth, having an abortion, sexual harassment and assault just to name a few. Women have a higher chance to have severe depression and relapsing. With major depression comes the higher rate of suicide. Centers of this type have been improving their designs, but in a way that still feels like the old.

My interests lie in new forms of architecture related to …

Delaware’S Climate Action Plan: Omission Of Source Attribution From Land Conversion Emissions, Elena A. Mikhailova, Lili Lin, Hamdi A. Zurqani, Zhenbang Hao, Christopher J. Post, Mark A. Schlautman, Gregory C. Post, George B. Shepard

Geography Faculty Publications and Presentations

Delaware’s (DE) Climate Action Plan lays out a pathway to reduce greenhouse gas (GHG) emissions by at least 26% by 2025 but does not consider soil-based GHG emissions from land conversions. Consequently, DE’s climate action plan fails to account for the contribution of emissions from ongoing land development economic activity to climate change. Source attribution (SA) is a special field within the science of climate change attribution, which can generate “documentary evidence” (e.g., GHG emissions inventory, etc.). The combination of remote sensing and soil information data analysis can identify the source attribution of GHG emissions from land conversions for DE. …

General Variability Leads To Specific Adaptation Toward Energy Optimal Policies, Sabrina J. Abram, Katherine L. Poggensee, Natalia Sánchez, Surabhi N. Simha, James M. Finley, Steven H. Collins, J. Maxwell Donelan

Physical Therapy Faculty Articles and Research

Our nervous systems can learn optimal control policies in response to changes to our bodies, tasks, and movement contexts. For example, humans can learn to adapt their control policy in walking contexts where the energy-optimal policy is shifted along variables such as step frequency or step width. However, it is unclear how the nervous system determines which ways to adapt its control policy. Here, we asked how human participants explore through variations in their control policy to identify more optimal policies in new contexts. We created new contexts using exoskeletons that apply assistive torques to each ankle at each walking …

Development Of 'Core Outcome Sets' For Meningioma In Clinical Studies (The Cosmic Project): Protocol For Two Systematic Literature Reviews, Edelphi Surveys And Online Consensus Meetings, Eortc Btg, Icom, Eano, Sno, Rano-Pro, Bnos, Sbns, Bims, Tbtc, International Brain Tumour Alliance, Brainstrust, And Brain Tumour Foundation Of Canada, Christopher P. Millward, Terri S. Armstrong, Heather Barrington, Sabrina Bell, Andrew R. Brodbelt, Helen Bulbeck, Anna Crofton, Linda Dirven, Theo Georgious, Paul L. Grundy, Abdurrahman I. Islim, Mohsen Javadpour, Sumirat M. Keshwara, Shelli D. Koszdin, Anthony G. Marson, Michael W. Mcdermott, Torstein R. Meling, Kathy Oliver, Puneet Plaha, Matthias Preusser, Thomas Santarius, Nisaharan Srikandarajah, Martin J.B. Taphoorn, Carole Turner, Colin Watts, Michael Weller, Paula R. Williamson, Gelareh Zadeh, Oliver Hanemann

Peninsula Medical School

INTRODUCTION: Meningioma is the most common primary intracranial tumour in adults. The majority are non-malignant, but a proportion behave more aggressively. Incidental/minimally symptomatic meningioma are often managed by serial imaging. Symptomatic meningioma, those that threaten neurovascular structures, or demonstrate radiological growth, are usually resected as first-line management strategy. For patients in poor clinical condition, or with inoperable, residual or recurrent disease, radiotherapy is often used as primary or adjuvant treatment. Effective pharmacotherapy treatments do not currently exist. There is heterogeneity in the outcomes measured and reported in meningioma clinical studies. Two 'Core Outcome Sets' (COS) will be developed: (COSMIC: Intervention) …

Legal Avenues For Protecting Access To Starry Skies, Alexandra Feathers

Washington Journal of Social & Environmental Justice

In the millennia before the creation and adoption of electric lighting, night skies drenched in stars were the inalienable inheritance of humanity. Electric lighting threatens this birthright by emitting star-blocking light (also known as light pollution) into night skies. Left unaddressed, light pollution will restrict access to dark, starry skies so that many in future generations will only know the stars secondhand. Yet despite the many benefits of dark skies, little scholarship has considered the problem of light pollution limiting the accessibility of starry skies, or how law can address this problem. This Article balances the hope of a future …

Ninth Circuit Muddies The Waters Of Tribal Sovereign Immunity And The Clean Water Act In Deschutes River Alliance V. Portland Ge, Danielle Clifford

Washington Journal of Social & Environmental Justice

Throughout 2011 and 2012, members of the Deschutes River community who fish in the Lower Deschutes River in Oregon noticed a slew of significant changes to their natural environment. The Deschutes River Alliance attributed the changes to the operation of the Pelton Round Butte Hydraulic Project, which is co-owned and operated by Portland General Electric and The Confederated Tribes of the Warm Springs. In July 2016, DRA filed a Clean Water Act lawsuit against them. To rule on the alleged CWA violations, the DRA must first get past the tribal sovereign immunity hurdle. It is long-recognized that American Indian Nations …

Front Matter

Washington Journal of Social & Environmental Justice

No abstract provided.

Assessment Of Health Information Literacy Of Nigerians On The Preventive Measures Of Covid 19 Pandemic: A Cross Sectional Online Survey, Onyedikachi Michael Okwor Mr, Linus I. Ugwuanyi Mr, Emmanuel C. Eze Dr, Jude Chidike Onah Mr

Library Philosophy and Practice (e-journal)

The study assessed the health information literacy level of Nigerian on the preventive measures and management of COVID 19 pandemic using online cross sectional survey. The research design adopted for the study is descriptive survey research design. Nigerians between the age of 15 and above made up the population of the study. Online survey using Google form was conducted between using social media platforms. To assess the health information literacy level of Nigerians on the preventive measures of COVID-19; a 25 objective questions constructed by the researcher called “COVID-19 Health Related Information Literacy Assessment Scale” was used. Data collected was …

An Artistic Response To Social Unrest In Hong Kong: Utilizing The Arts To Build Up And Sustain An Understanding And Respectful Community, Shue-Kei Joanna Mok

Peace and Conflict Studies

The 2019–20 Hong Kong protests, commenced in March 2019, were triggered by the introduction of The Fugitive Offenders and Mutual Legal Assistance in Criminal Matters Legislation Bill 2019 by the Hong Kong government. In June 2019, peaceful civil disobedience escalated into violence, signalling the emergence of polarization and antagonism in the city. As of December 2019, an estimated 300,000 excess probable depressive cases and 810,000 suspected PTSD cases were associated with the 2019–20 social unrest. Furthermore with the pandemic, the hopelessness manifested in the city and citizen’s mental wellbeing are of extreme concern. Given the holistic and therapeutic nature of …