Non-Adiabatic Energy Surfaces of the B+H\u3csub\u3e2\u3c/sub\u3e Systems

In order to solve the dynamics of a system, the kinetic energy operator of the Hamiltonian must be diagonalized. Diagonalization requires rotation of the system into a non-adiabatic representation. This rotation is a coupling angle determined by the derivative coupling terms. Derivative coupling terms are calculated using Columbus and Brooklyn, software packages. Separation of internal dynamics characterized by Jacobi coordinates, and external dynamics characterized by a set of Euler angles and the center of mass position, requires a transformation from Cartesian coordinates to Jacobi coordinates required for subsequent dynamical calculations. Previous attempts to solve for non-adiabatic energy surfaces in this manner have failed because of an ambiguity in selecting the correct variable for describing the overall rotation of the B+H2 system, giving answers that do not agree with theory. This error, which lies within the method of converting from one coordinate system to another, is discovered and corrected. By way of this correction, correct coupling angles are calculated, and non-adiabatic energy surfaces are calculated

Cornell University remote sensing program

The major activities of the program staff from December 1, 1973 to May 31, 1974 are reported and include: (1) communication and instruction; (2) data and facilities; (3) research completed; (4) research in progress; (5) selected correspondence; (6) grant sponsored travel; and (7) seminars and newsletters. Detailed information and maps are given for the following selected projects: (1) ERTS mapping of waterways in the Tug Hill region of New York State; (2) photo-archeological investigation of Great Gully, New York; and (3) evaluation of selected highway impacts using aerial photography

Participation And performance In 8.02x Electricity And Magnetism: The First Physics MOOC From MITx

Massive Open Online Courses are an exciting new avenue for instruction and research, yet they are full of unknowns. In the Spring of 2013, MITx released its first introductory physics MOOC through the edX platform, generating a total enrollment of 43,000 students from around the world. We describe the population of participants in terms of their age, gender, level of education, and country of origin, highlighting both the diversity of 8.02x enrollees as well as gender gap and retention. Using three midterm exams and the final as waypoints, we highlight performance by different demographic subpopulations and their retention rates. Our work is generally aimed at making a bridge between available MOOC data and topics associated with the Physics Education Research community.Comment: 4 pages, 5 figures, Accepted for publication in the Physics Education Research Conference Proceedings, Portland OR 201

Reshaping Counselor Education: The Identification of Influential Factors on Multisystemic Therapy

Multisystemic therapy (MST) is a form of behavioral health treatment for adolescents which has been identified as one of the leading effective forms of treatment for children and adolescents with severe behavioral and mental health disorders. Since its creation, there have been countless studies exploring if this form of treatment works with a different population in a variety of locations. Additionally, there have been studies which determined that MST is just as effective as or even less effective than other treatment modalities. This dissertation explored the specific aspects of MST and what leads to its effectiveness. A meta-analysis and case study were conducted as the methodology for this study. Bronfenbrenner’s Ecological Systems Theory was the theoretical guidelines for this study and addressed the research questions: Does MST show better outcomes than usual treatment paradigms? Which factors influence the outcomes of MST for youth? The meta-analysis produced outcome data on four variables and identified that MST does produce better outcomes than usual treatment paradigms. The meta-analysis indicated that treatment fidelity was a factor that influenced MST outcomes, additionally, the case study provided support to the meta-analysis with seven codes, one including treatment fidelity which indicates an influence of MST outcomes. The answers to these research questions provide recommendations for the future of MST overall, the future direction in counselor education, as well as with clinical practice

Pitfalls, Progress, and Partnership: Collaboration Between Special Collections and Preservation in Academic Libraries

Published in Collection Management 30, no. 3 (2006): 3–19, DOI: 10.1300/J105v30n03_02

Virginia Circuit Court Opinions, Harrison on Wills and Administration in Virginia and West Virginia

Jesse Root. Nathaniel Chipman. George Caines. Ephraim Kirby. Most lawyers will not recognize these names. More familiar, perhaps, are Alexander Dallas, Henry Wheaton, and Richard Peters. In fact, all belong to the same distinguished group: compilers and reporters of America\u27s early judicial decisions. With the publication of Volumes One and Two of the Virginia Circuit Court Opinions (hereinafter Opinions ), Professor Hamilton Bryson bids fair to join this distinguished group

Advancing Human Services Education: Exploratory Study of International Service Learning and Digital Pedagogy

This study focuses on advancing the understanding of human services education in international service learning focused study abroad programs. There is a gap in the literature pertaining to service-learning education for human services students. This study explores the integration of service-learning, reflection, and technology in human services education. Case study methodology and document review analysis are used to examine the use of ePortfolio as a reflective tool in addition to the skill development of upper-level undergraduate human services students through service learning. Seven themes arose from the findings, which suggest that international service-learning assists students in human services skill development and ePortfolio are effective as a reflective tool in human services education

An optimal inverse method using Doppler lidar measurements to estimate the surface sensible heat flux

Inverse methods are widely used in various fields of atmospheric science. However, such methods are not commonly used within the boundary-layer community, where robust observations of surface fluxes are a particular concern. We present a new technique for deriving surface sensible heat fluxes from boundary-layer turbulence observations using an inverse method. Doppler lidar observations of vertical velocity variance are combined with two well-known mixed-layer scaling forward models for a convective boundary layer (CBL). The inverse method is validated using large-eddy simulations of a CBL with increasing wind speed. The majority of the estimated heat fluxes agree within error with the proscribed heat flux, across all wind speeds tested. The method is then applied to Doppler lidar data from the Chilbolton Observatory, UK. Heat fluxes are compared with those from a mast-mounted sonic anemometer. Errors in estimated heat fluxes are on average 18 %, an improvement on previous techniques. However, a significant negative bias is observed (on average −63%) that is more pronounced in the morning. Results are improved for the fully-developed CBL later in the day, which suggests that the bias is largely related to the choice of forward model, which is kept deliberately simple for this study. Overall, the inverse method provided reasonable flux estimates for the simple case of a CBL. Results shown here demonstrate that this method has promise in utilizing ground-based remote sensing to derive surface fluxes. Extension of the method is relatively straight-forward, and could include more complex forward models, or other measurements

Laboratory observation of a nonlinear interaction between shear Alfv\'{e}n waves

An experimental investigation of nonlinear interactions between shear Alfv\'{e}n waves in a laboratory plasma is presented. Two Alfv\'{e}n waves, generated by a resonant cavity, are observed to beat together, driving a low frequency nonlinear psuedo-mode at the beat frequency. The psuedo-mode then scatters the Alfv\'{e}n waves, generating a series of sidebands. The observed interaction is very strong, with the normalized amplitude of the driven psuedo-mode comparable to the normalized magnetic field amplitude ($\delta B/B$) of the interacting Alfv\'{e}n waves.Comment: 10 pages, 4 figures, submitted to Phys. Rev. Let

Analytic Non-adiabatic Derivative Coupling Terms for Spin-orbit MRCI Wavefunctions. I. Formalism

Analytic gradients of electronic eigenvalues require one calculation per nuclear geometry, compared to at least 3n + 1 calculations for finite difference methods, where n is the number of nuclei. Analytic nonadiabatic derivative coupling terms (DCTs), which are calculated in a similar fashion, are used to remove nondiagonal contributions to the kinetic energy operator, leading to more accurate nuclear dynamics calculations than those that employ the Born-Oppenheimer approximation, i.e., that assume off-diagonal contributions are zero. The current methods and underpinnings for calculating both of these quantities, gradients and DCTs, for the State-Averaged MultiReference Configuration Interaction with Singles and Doubles (MRCI-SD) wavefunctions in COLUMBUS are reviewed. Before this work, these methods were not available for wavefunctions of a relativistic MRCI-SD Hamiltonian. Calculation of these terms is critical in successfully modeling the dynamics of systems that depend on transitions between potential energy surfaces split by the spin-orbit operator, such as diode-pumped alkali lasers. A formalism for calculating the transition density matrices and analytic derivative coupling terms for such systems is presented