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- Creators: Barrett, The Honors College
- Creators: Computer Science and Engineering Program
- Creators: Zaffar, Ehsan
- Member of: Barrett, The Honors College Thesis/Creative Project Collection
Mesoscale eddies are important features in the Sargasso Sea that can increase or decrease the available nutrients in the euphotic zone. Two different mesoscale eddies were sampled: an anti-cyclonic eddy and the BATS station which was located at the edge of a cyclonic eddy. The results indicated that BATS had overall higher instantaneous growth (µ between 0.1 d-1 and 3.7 d-1) and grazing rates on pico- and nanophytoplankton, as well as diatoms, compared to the anti-cyclonic eddy (µ between 0.2 d-1 and 3 d-1). I also determined taxon-specific rates using quantitative polymerase chain reaction (qPCR) for the order Mamiellales, one of the smallest representatives of the abundant prasinophytes. This method yielded surprisingly high growth (9.7 d-1 ) and grazing rates (-8.2 d-1) at 80m for BATS. The euphotic zone (~100m) integrated biomass of all phytoplankton did not vary significantly between BATS (379 mg C m-2) and the anti-cyclonic eddy (408 mg C m-2) and the net growth rates at both locations were very close to zero for most of the groups. Although the biomass and net growth rates did not vary greatly between the two locations, the high instantaneous growth and grazing rates of pico- and nano-eukaryotic phytoplankton indicate an increase in the rate of the marine microbial food web, or microbial loop, compared to the anti-cyclonic eddy. This could have been due to the input of new nutrients in the edge of the cyclonic eddy at BATS. Thus, my study suggests that mesoscale variability is of considerable importance for the dynamics of the phytoplankton community and their role in the microbial loop. Much can be learned when using DNA based taxon-specific rates, especially to understand the relative importance and contribution of specific taxa.
More taxon-specific molecular studies will have to be carried out to quantify specific rates of more phytoplankton groups, which will supply a more complete knowledge of phytoplankton community dynamics in the Sargasso Sea. This will increase our understanding of the role of specific groups to the biological carbon dynamics in the euphotic zone into the deep ocean.
COVID-19 has been challenging for nearly everyone in different ways. Healthcare organizations have had to quickly change policy, modify operations, reorganize facilities, hire, and train staff to overcome COVID-19 related challenges to be able to still provide care for patients, all while being mindful of the protection of their staff. Some healthcare organizations have responded particularly well, perhaps due to preparedness, planning, or exceptional leadership in times of crisis. To explore this, we invited seven healthcare system leaders from three different organizations in Arizona to talk about how they overcame challenges at the beginning of this pandemic with effective strategies and any leadership tips they had for the future. After the interviews were conducted, the interviews were transcribed, coded qualitatively, and separated into themes and categories to analyze their answers to the questions asked. The results and conclusions included strategies such as having open and honest communication, teamwork, rapidly developing communicating policies, and widely adopting new work practices like Telemedicine, Zoom, and working at home as crucial. This report is designed to assist in aiding and inspiring future or other leaders to be better prepared for solving various challenges with other emergencies that arise in the future.
A description of the robotics principles, actuators, materials, and programming used to test the durability of dendritic identifiers to be used in the produce supply chain. This includes the application of linear and rotational servo motors, PWM control of a DC motor, and hall effect sensors to create an encoder.
Police use of force is a controversial practice on both the political stage and by scholars of criminal justice. Scholarly research has highlighted best practice for police departments’ use of force policies. Diverging from these policies may produce ineffective and harmful use of force practices within departments. Because of these potential consequences of police departments diverging from research-based evidence, it is necessary to identify when recommended policy is not being utilized. The purpose of this study is to identify whether there are points of dissent or congruence between criminal justice scholars and police departments with regards to use of force policy. Efforts have been made to empirically identify best practices of use of force policy. The findings of this study indicate that points of dissent do exist in the policies of police departments in the U.S. and the policy recommendations of criminal justice scholars. The implications of these findings include reform to the use of force policies of police departments to more accurately reflect the policies recommended by scholars in the use of force.
Police use of force is a controversial practice on both the political stage and by scholars of criminal justice. Scholarly research has highlighted best practice for police departments’ use of force policies. Diverging from these policies may produce ineffective and harmful use of force practices within departments. Because of these potential consequences of police departments diverging from research-based evidence, it is necessary to identify when recommended policy is not being utilized. The purpose of this study is to identify whether there are points of dissent or congruence between criminal justice scholars and police departments with regards to use of force policy. Efforts have been made to empirically identify best practices of use of force policy. The findings of this study indicate that points of dissent do exist in the policies of police departments in the U.S. and the policy recommendations of criminal justice scholars. The implications of these findings include reform to the use of force policies of police departments to more accurately reflect the policies recommended by scholars in the use of force.
