Transition from a supersonic to a subsonic solar wind

The transition from a supersonic to a subsonic corona was investigated by increasing the density N sub O at the base of the corona while keeping the temperature T sub O constant. For the initial values of N sub O and T sub O, the solution of the inviscid solar wind equations is of the Parker type. As N sub O is increased, Parker type supersonic solutions cease to exist. No subsonic solutions exist

Equilibrium configurations between density and topographic surface irregularities in a purely elastic earth model technical report no. 2

Equilibrium configurations between density and topographic surface irregularities in two- dimensional purely elastic earth mode

An investigation into the relationships between the geomagnetic field, cosmic rays and trapped particles by means of the earth satellite Ariel 1

Imperial Users onl

the library advocacy gap: increasing librarians’ political self-efficacy

Libraries play a critical role in American communities; they promote formal and informal learning, provide social infrastructure, equitable access to information, access to technology, workforce development, and community engagement. Yet library budgets and relevance are continually questioned. Libraries need strong library advocates to raise awareness of the important role libraries play in communities and to advocate for policies that advance the mission of libraries. There is concern in the field that advocacy, public policy, and information policy are not adequately covered in the Library and Information Science (LIS) graduate programs. Currently, there is a gap in LIS literature, research is needed to drive decision making, to better educate, and prepare librarians to engage in library advocacy and public policy. Do librarians’ feel they have the skills needed to effectively advocate? Are they advocating? What can be done to strengthen library advocacy? Through the lens of social cognitive theory using a phenomenological design, this study compares professional librarians’ involvement in library advocacy activities to their belief that these same activities are the librarian’s responsibility. Further, this study seeks relationships between professional librarians’ political self-efficacy and advocacy participation. The study also explores librarians’ LIS education and professional development experience regarding advocacy and information policy. An explanatory sequential mixed method design is being used: first an online survey, followed by in-depth interviews to add context to the survey results. The result will be a descriptive portrait of librarians’ advocacy engagement, political self-efficacy, and factors that influence librarians’ political self-efficacy (LPSE). Recommendations will be made to strengthen advocacy skills and participation. Initial findings will be shared

Large scale flows in the solar interior: Effect of asymmetry in peak profiles

Ring diagram analysis can be used to study large scale velocity fields in the outer part of the solar convection zone. All previous works assume that the peak profiles in the solar oscillation power spectrum are symmetric. However, it has now been demonstrated that the peaks are not symmetric. In this work we study how the explicit use of asymmetric peak profiles in ring-diagram analysis influences the estimated velocity fields. We find that the use of asymmetric profiles leads to significant improvement in the fits, but the estimated velocity fields are not substantially different from those obtained using a symmetric profile to fit the peaks. The resulting velocity fields are compared with those obtained by other investigators.Comment: To appear in Ap