Vortex pinning by cylindrical defects in type-II superconductors: Numerical solutions to the Ginzburg-Landau equations

We numerically integrate the one-dimensional, cylindrically symmetric Ginzburg-Landau equations to calculate the spatial variation of the order parameter and supercurrents for a vortex trapped by a cylindrical defect. We use the resulting field distributions to estimate the pinning energy, and make use of the vortex/two-dimensional boson analogy to calculate the depinning temperature. The microscopic behavior oi the fields depends on the size, and the conductivity of the cylindrical defect appears to be important for the pinning

Resilience and Thriving in Homeless College Students

Homeless college students face many obstacles in higher education. These students are the invisible population on campuses that are sometimes forgotten. Despite facing many challenges and barriers, these students continue to pursue a degree of higher education. The purpose of this study was to understand the experiences and obstacles homeless college students face while they word toward a degree. Understanding how successful homeless college students overcome barriers and utilize resources will provide information that may change the fate of future homeless college students. A phenomenological approach was utilized to explore the qualities and characterizes that allow homeless college students to build resilience and thrive. Research revealed that students use many different personal and community resources that enable resilience and thriving. Participants discussed the positive experience they had at the university despite being homeless

Criminal History Records: Additional Actions Could Enhance the Completeness of Records Used Employment-Related Background Checks for Employment-Related Background Checks

Authorized employers use information from FBI criminal history record checks to assess a person’s suitability for employment or to obtain a license. States create criminal records and the FBI facilitates access to these records by other states for nationwide checks. GAO was asked to assess efforts to address concerns about incomplete records, among other things. This report addresses to what extent (1) states conduct FBI record checks for selected employment sectors and face any challenges; (2) states have improved the completeness of records, and remaining challenges that federal agencies can help mitigate; and (3) private companies conduct criminal record checks, the benefits those checks provide to employers, and any related challenges. GAO analyzed laws and regulations used to conduct criminal record checks and assessed the completeness of records; conducted a nationwide survey, which generated responses from 47 states and the District of Columbia; and interviewed officials that manage checks from the FBI and 4 states (California, Florida, Idaho, and Washington). GAO selected states based on geographic location and other factors

Resilience and Thriving in Homeless College Students

Homeless college students face many obstacles in higher education. These students are the invisible population on campuses that are sometimes forgotten. Despite facing many challenges and barriers, these students continue to pursue a degree of higher education. The purpose of this study was to understand the experiences and obstacles homeless college students face while they word toward a degree. Understanding how successful homeless college students overcome barriers and utilize resources will provide information that may change the fate of future homeless college students. A phenomenological approach was utilized to explore the qualities and characterizes that allow homeless college students to build resilience and thrive. Research revealed that students use many different personal and community resources that enable resilience and thriving. Participants discussed the positive experience they had at the university despite being homeless