An increase in population and need to protect the planet has created many initiatives and research goals in developing alternatives methods of fueling. Federal and state policies have provided a push for industries to find ways to of reducing their impact on the environment while maintaining competitiveness. In the sector of alternative fuels, large policies such as the Renewable Fuel Standards (RFS) in the United States are making goals to reduce vehicular fuel from coal and oil, and focus on alternative fuels such as ethanol and biodiesel. Along with the RFS and other federal policies, states are introducing independent initiatives to promote the use of alternative fuels.
Research has shown that other crops besides corn can feasibly be used to produce ethanol for fuel use. One of the major crops of interest currently is switchgrass (Panicum Virgatum L.) because of its ability to grow under a variety of weather conditions and soil types. Switchgrass does not require as much maintenance as corn and is a perennial grass that can have high yielding fields for up to 9 years.
This report focuses on the impacts from using switchgrass-derived ethanol to meet the state of Arizona’s policy to have government fleet vehicles operating on alternative fuels. The study uses a life cycle assessment (LCA) approach to evaluate 22 million gallons of ethanol produced in Arizona and stored at fueling stations for use. Impacts in land use, global warming, and water quality are evaluated using software tools and databases in Ecoinvent and Simapro.
The results of the study indicate that the cultivation and harvest phase of the process will contribute the most to negative environmental impacts. According to the study, application of heavy nutrient fertilizer and the machinery needed for the additional agriculture have the potential to contribute over 36 million moles of hydrogen and 89 million CTU eq. to the air, soil, and water.
Increasingly, information seekers can utilize “open access” (OA) resources, primarily scholarly research journals, at no cost to themselves. However, many who could benefit from free access to research do not know about it. This presentation will present resources and outreach activities related to Open Access from the Arizona State University library system. The purpose is to encourage greater understanding of and participation in OA practices. Examples include:
1. Library guides on scholarly communication and open access resources.
2. Resources for Open Access Week, Open Education Week, and other events.
3. Participation in open access through outreach to our user communities.
4. Institutional memberships in OA organizations and other efforts such as ASU’s digital repository and a resolution passed by the librarians’ governance committee.
This presentation will benefit librarians who seek ideas and tools to engage colleagues and promote Open Access to their user communities.
Presentation slides describing an Arizona Centennial project to build a digital library and facilitate community discussion about why people came to Arizona, why they stayed, and why they left. Presentation was made at Friendship Village, Tempe AZ, November 2011.
The coronavirus (COVID-19) pandemic has affected employment and food security globally and in the United States. To understand the impacts of COVID-19 on food security in Arizona, a representative survey of Arizona households was launched online from July 1 to August 10, 2020. This brief provides an overview of changes in food security rate, perceived worries and challenges about food security, as well as behavioral changes and strategies adopted since the pandemic. Additional briefs from the Arizona survey covering topics on economic consequences, food access, and participations in food assistance programs during the pandemic are also available.
The coronavirus (COVID-19) pandemic led to disruptions in the food supply and high rates of unemployment and under-employment, both in Arizona and nationally. These emergencies required food assistance programs to adapt quickly and in unprecedented ways by relaxing eligibility criteria, improvising on delivery modalities, and increasing benefits. To examine food assistance program participation during the pandemic, we collected data from a representative sample of 620 Arizona households. The sample was drawn from across Arizona in July-August 2020 using an online survey. This brief provides the summary for participation in key food assistance programs, namely, the Supplementary Nutrition Assistance Program (SNAP), the Special Supplemental Program for Women Infants and Children (WIC), School Food Programs, and the emergency food assistance provided through food pantries.
With more than 19 million confirmed COVID-19 cases across the United States1 and over 500,000 in Arizona as of December 2020, the ongoing pandemic has had devastating impacts on local, national, and global economies. Prior to the pandemic (February 2020), based on U.S. Bureau of Labor Statistics data, the unemployment rate in Arizona was 6.5%, compared to 4.9% at the national level.3 Since the beginning of the COVID-19 pandemic (March 2020), the United States has experienced striking increases in the unemployment rate, reaching 13.2% in April. Similarly, in Arizona, the unemployment rate jumped to over 13.5% in April. The unemployment rates have since declined both nationally and in Arizona but remain higher compared to February 2020. In November 2020 (the most recent data available), the national unemployment rate was 6.7%, while in Arizona the rate was 7.8%—the 10th highest unemployment rate among all U.S. states.
for Unmanned Aerial Vehicles.
Towards enabling a UAV to autonomously sense and avoid moving obstacles, this thesis makes the following contributions. Initially, an image-based reactive motion planner is developed for a quadrotor to avoid a fast approaching obstacle. Furthermore, A Dubin’s curve based geometry method is developed as a global path planner for a fixed-wing UAV to avoid collisions with aircraft. The image-based method is unable to produce an optimal path and the geometry method uses a simplified UAV model. To compensate
these two disadvantages, a series of algorithms built upon the Closed-Loop Rapid Exploratory Random Tree are developed as global path planners to generate collision avoidance paths in real time. The algorithms are validated in Software-In-the-Loop (SITL) and Hardware-In-the-Loop (HIL) simulations using a fixed-wing UAV model and in real flight experiments using quadrotors. It is observed that the algorithm enables a UAV to avoid moving obstacles approaching to it with different directions and speeds.
Describes the LIHEAP benefits distributed to electric utilities companies in Arizona for fiscal year 2019.
This project is creating a non-profit green building organization called AZ Build Green Coalition. There is currently no statewide neutral organization for knowledge sharing about various green building initiatives throughout Arizona. Multiple municipalities in the state are now interested in and starting to execute green building initiatives through varied processes. Yet, each municipality is remaking the wheel and select green building champions in each city usually lead these efforts without a lot of funding or capacity. A central source for knowledge sharing and education would be instrumental in facilitating faster and more efficient movements with green building initiatives and codes. For example, the city of Scottsdale is in the process of being the first municipality in the nation to adopt the newest version of the International Green Construction Code (IgCC). This project has been involved in and aided in that initiative. The city of Tempe has initiated three IgCC 2018 pilot projects. Other municipalities in the state are interested in the IgCC and several have previously adopted it on a voluntary basis. Sharing resources and code approval barriers through a central forum would be beneficial for faster progress and also navigating the political barriers more effectively. The non-profit aims to assist with this collaboration and future high performance building initiatives through tools such as: public presentations, a central sharable document repository, an online presence, and other collaborative tools.