Needs of homeless men outside of shelter

The purpose of this study was to assess the needs of homeless men outside of shelters. The study helped social works and the social field in understanding the needs of homeless people and providing the resources needed for this population

The Application of Model Predictive Control on Paralleled Converters for Zero Sequence Current Suppression and Active Thermal Management

In the field of power electronics, the control of rectifiers is a crucial area of study. Rectifiers are used to convert AC power into DC power, and are commonly used in a wide range of applications, including renewable energy systems, industrial automation, and consumer electronics. However, in medium and high-power systems when multiple rectifiers are connected in parallel to a DC bus, stability issues can arise, including voltage fluctuations, zero sequence circulating current, and thermal imbalance. Achieving stable DC bus voltage is essential for maintaining the proper functioning of electronic devices, while suppressing zero sequence current is necessary for protecting the power electronics equipment from damage and ensuring that a power system\u27s performance is not degraded. Active thermal management is important for ensuring the longevity and reliability of the power electronics equipment. To achieve these objectives, advanced control techniques must be developed and implemented. This research investigates the use model predictive control to achieve three objectives in two paralleled rectifier each control cycle: DC voltage stability, zero sequence suppression, and thermal balance. These objectives are critical for ensuring the reliable and efficient operation of power electronics systems. The findings of this research will contribute to the development of more reliable and efficient power electronics systems, with the Navy\u27s (power electronic building block) PEBB systems particularly in mind. However, this research can be extended to other medium and high-powered applications in modern technology too such as missile defense systems, data centers, and uninterruptible power supplies

Abundance and Density of Florida Black Bears in Okefenokee National Wildlife Refuge and Osceola National Forest

The Florida black bear (Ursus americanus floridanus) exists as 7 relatively disjunct populations in Alabama, Florida, Georgia, and possibly Mississippi. In 1974, the Florida Fish and Wildlife Conservation Commission listed the Florida black bear as threatened statewide because of habitat loss and illegal killing. Although the species has not been afforded federal protection, the U.S. Fish and Wildlife Service is currently involved in a lawsuit over this issue. Although a judge\u27s decision is still pending in the case, the earlier ruling by the USFWS could be reversed and the Florida black bear would be granted federal protection as a \u27\u27threatened species. I investigated population size and density of Florida black bears in the Okefenokee-Osceola ecosystem in southeast Georgia and northcentral Florida. I sampled bears at the Okefenokee National Wildlife Refuge (ONWR) and Osceola National Forest (ONF). This study provided a rare opportunity to compare estimates between a hunted (ONWR) and unhunted (ONF) assemblage of bears within the same population. In addition to livetrapping, I also sampled each study area using a non-obtrusive sampling technique of collecting hair samples from free-ranging bears using baited barbed-wire enclosures. Individual identification was facilitated by microsatellite analysis of DNA extracted from collected hair samples. From 1995-1998, I, along with other project personnel, live captured 123 individual bears 208 times on the Okefenokee area and 79 bears 132 times on the Osceola area. During the 15 weeks of hair sampling, 435 and 742 bear visits resulted in the collection of 374 and 637 hair samples on the Okefenokee and Osceola study areas, respectively. A subsample of 79 hair samples was randomly selected for analysis from the Okefenokee data. Complete multi-locus genotypes were obtained for 78 of those samples, of which 39 individual bears were identified. Eighty-eight hair samples were chosen for analysis from the Osceola data; complete multi-locus genotypes from 37 bears were obtained from 84 samples. All samples were analyzed at the same 8 microsatellite loci. The heterogeneity model Mh produced an estimate of 71 (95% CI= 59-91) bears for the Okefenokee study area, corresponding to a density of 0.14 bears/km2. On the Osceola study area, the null model Mo estimated population size at 44 (95% CI= 40-57) bears, or 0.12 bears/km2. The hair-sampling technique is a promising new tool for mark-recapture experiments and bear research. Because large areas can be sampled at one time, spatial and temporal variation in capture probabilities can be overcome. Likewise, trap response bias is likely minimized because the capture involves no physical restraint or undo stress. Based on the above, large sample sizes can be collected in a relatively short period of time. Thereby facilitating the use of closed models for estimating population size

Social capital and high school football: a game plan for the development of human and cultural capital

The origin of this study was twofold: a concern for the lack of human and cultural capital in many of today\u27s adolescents and a desire to understand the role that athletic participation plays in this situation. The focus of this study is to examine the development of human and cultural capital in the Black male adolescent as a result of his participation in the high school football program. This study is based on a year-long ethnography in three Miami-Dade County high school football programs. Specifically, the social capital and the resources it makes available in each football program was examined as a significant variable in the development of human and cultural capital in the adolescent. It is my hope that this study contributes to the understanding of the process and outcome of athletic participation

Geochemical Variations of Basalts Erupted along the Reykjanes Ridge

The Reykjanes Ridge is the section of the Mid-Atlantic Ridge just south of Iceland, and is the seaward extension of the Reykjanes Peninsula on Iceland. Reykjanes, meaning smoky peninsula, describes the steam from geothermal hot springs on the peninsula. This section of mid-ocean ridge shallows from the south, near the Charlie Gibbs Fracture Zone, towards Iceland, and this effect is ascribed to the presence of a mantle plume beneath Iceland. It is unknown whether the plume represents a compositional anomaly, a thermal anomaly, or both. Distinct variations in the geochemistry of basalt erupted along the Reykjanes Ridge towards Iceland have been described by previous workers (e.g., Schilling, 1973; Jones et al., 2014) and may reflect the presence of the plume beneath Iceland, but could also reflect interaction of magma with thickened Icelandic crust. Publication of a new compilation of geochemical data for mid-ocean ridge basalts by Gale et al. (2013) allows geochemical variations along the ridge to be re-examined using whole-rock data that have been filtered to exclude analyses of poor quality and that have been corrected for interlaboratory bias. The data used for this research are analyses of samples from 57°N to 64°N taken from this compilation of Mid-Ocean Ridge Basalt (MORB) analyses by Gale et al. (2013). The database includes major oxide data, trace element data and isotope data for 302 samples along with the latitude, longitude and depth at which the samples were collected. These analyses are plotted on variation diagrams to assess the role of crystallization and of other processes in controlling the composition of basalts erupted along the ridge. The analyses are also plotted against latitude in order to establish changes in magma geochemistry over the length of the ridge. Significant variations in major oxide and trace element composition occur as the ridge approaches Iceland, with a distinct change in composition occurring at 60.5°N. In order to further understand how specific groups of elements changed over the length of the ridge, the data was normalized to the average composition of normal mid-ocean ridge basalt, primitive mantle, and CI chondrite (for rare earth elements only). The results from this research shows that variations in major oxides are consistent with control by crystallization, and there is remarkable similarity between whole rock and volcanic glass analyses. Trace element data show considerable variations in samples collected along the ridge, but do not provide convincing evidence for variation with assimilation of thickened crust.It is concluded that the mantle plume reflects a compositional anomaly, but it is not clear that there is also a thermal anomaly.Funded by: Shell Exploration and Production Co.No embarg

RecycMe: The Ohio State University Recycling Phone Application

ENR 2367This paper is the blueprints for a recycling phone application for Ohio State called RecycMe. RecycMe is a mobile application that spreads knowledge about the environment and recycling through scanning QR codes. There is an element of competition that arises once the QR code is scanned as well to encourage the apps use. The goal is to spread awareness and increase environmentally friendly behaviors such as recycling.Academic Major: Environment, Economy, Development, and SustainabilityAcademic Major: Environmental ScienceAcademic Major: Geological SciencesAcademic Major: Natural Resources Managemen

Computational and experimental assessment of public dose from normal research reactor operations [abstract]

Abstract only availableThe Missouri University Research Reactor (MURR) in Columbia, Missouri is interested in the amount of the Argon-41 being produced and released to the environment. The objective of this work is to know what operations within the facility are contributing to this production and the quantities released. I'll be working in collaboration with Jeancarlo Torres (Computational Assessment) and Erick Scheerer (Experimental Assessment) in determining these parameters. The calculational work analyzes the distribution of releases from the stack at the MURR. The dose is then predicted with the Comply program. EPA's Comply model was developed based on the procedures in the National Council on Radiation Protection and Measurements Commentary No.3 (NCRP89). The Comply computer software may be used to demonstrate compliance with the National Emission Standards for Hazardous Air Pollutants (NESHAPS) in 40 CFR 61 Subpart I and H. Comply calculates the effective dose equivalent (EDE) from radionuclide released from stacks and vents. The Nuclear Activation Analysis (NAA) is used in the experimental assessment of Argon-41 production. Neutron Activation Analysis is a nuclear process used for determining concentrations of elements in a vast amount of materials. NAA allows discrete sampling of elements as it disregards chemical form of a sample and focuses solely on its nucleus. NAA is a sensitive analytical technique useful for performing both qualitative and quantitative multi-element analysis for mayor, minor and trace elements in samples from almost every conceivable field of scientific or technical interest. Using NAA we will irradiate air samples from around the facility to determine the concentration of natural Ar-40 to produce Ar-41 for measurement. The relationship between these two different projects is that the results of the experimental technique will indicate if excess argon is present in the facility and the computational technique will calculate the dose the activation of Ar-40 to Ar-41 may have on the environment

Effect of Video Modeling with Self-Monitoring on Classroom Management Strategies: An Intervention to Increase the Use of Specific Praise

The implementation of effective classroom management strategies has been associated with increases in student academic engagement and decreases in student disruptive behavior. However, teacher-training programs often fail to provide pre-service teachers with the knowledge base and experience necessary to implement these strategies. Training options exist for in-service teachers to acquire these skills; however, they often require a level of time on the part of the trainer and trainee that may not be available in schools. A more time efficient training solution may be video modeling plus a brief self-monitoring intervention. This study investigated the use of video modeling plus self-monitoring to train teachers to use specific praise as a classroom management strategy. A multiple-baseline design across three teacher participants was utilized to evaluate improvements in teacher behavior. Data were also collected on student outcomes (i.e., academic engagement and disruptive behavior). Results indicate that the intervention increased the use of specific praise in two of the three teacher participants; results did not indicate improvement in student outcomes (i.e., academic engagement and disruptive behavior). Limitations, directions for future research, and implications for practice and research are also presented