Quantitative magnetospheric models derived from spacecraft magnetometer data

Quantitative models of the external magnetospheric field were derived by making least-squares fits to magnetic field measurements from four IMP satellites. The data were fit to a power series expansion in the solar magnetic coordinates and the solar wind-dipole tilt angle, and thus the models contain the effects of seasonal north-south asymmetries. The expansions are divergence-free, but unlike the usual scalar potential expansions, the models contain a nonzero curl representing currents distributed within the magnetosphere. Characteristics of four models are presented, representing different degrees of magnetic disturbance as determined by the range of Kp values. The latitude at the earth separating open polar cap field lines from field lines closing on the dayside is about 5 deg lower than that determined by previous theoretically-derived models. At times of high Kp, additional high latitude field lines are drawn back into the tail

Some new methods in geomagnetic field modeling applied to the 1960 - 1980 epoch

The utilization of satellite and surface data together permitted the incorporation of a solution for the anomaly field at each observatory. The residuals of the observatory measurements to such models is commensurate with the actual measurment accuracy. Incorporation of the anomaly estimation enabled the inclusion of stable time derivatives of the spherical harmonic coefficients up to the third derivative. A spherical harmonic model is derived with degree and order 13 in its constant and first time derivative terms, six in its second derivative terms and four in its third derivative terms

Mapping the invisible hand: a body model of a phantom limb

After amputation, individuals often have vivid experiences of their absent limb (i.e., a phantom limb). Therefore, one’s conscious image of one’s body cannot depend on peripheral input only (Ramachandran & Hirstein, 1998). However, the origin of phantom sensations is hotly debated. Reports of vivid phantoms in the case of congenital absence of the limb show that memory of former body state is not necessary (Brugger et al., 2000). According to one view, phantoms may reflect innate organization of sensorimotor cortices (Melzack, 1990). Alternatively, phantoms could reflect generalization from viewing other people’s bodies (Brugger et al., 2000), a sensorimotor example of the classic theory that understanding oneself follows from understanding the “generalized other” (Mead, 1934, p. 154). Because phantom limbs cannot be stimulated, sensory testing cannot directly compare visual and somatosensory influences on representations of phantom limbs. Consequently, empirical investigation of phantoms is limited

Chadron : a chronological view of the early history of the old-home-town

History of Chadron, Nebraska from 1885-1925, with the bulk of the time spent on 1885-1910.https://openspaces.unk.edu/spec-coll/1010/thumbnail.jp

Faculty Perspectives of Student-Faculty Collaborative Course Design

This qualitative research study explored speech-language pathology (SLP) faculty perspectives of collaborative course design (CCD). For the purposes of this study, the term “faculty” includes all those who teach at the university level. Student-faculty CCD offers benefits to course instructors and students; however, research regarding this topic is lacking in the field of SLP. Interviews with faculty members in SLP programs explored faculty perspectives regarding the incorporation of student input into course design as well as anticipated benefits and challenges involved. The results of this study identified several factors related to faculty reluctance to use CCD, including reluctance to share control, views of students, institutional expectations, planning styles, and uncertainness of how to implement this type of course design. While the participants expressed reluctance to use CCD, they acknowledged potential benefits, such as valuable student input, growth for the professor, increased student engagement, and clinical application. Participants also suggested ideas for how to implement CCD. Lastly, the participants identified information that they would need to implement student-faculty CCD, which has implications for future research

The Effects of Assertiveness Training on Marital Adjustment

The purpose of this study was to investigate the effects of v assertive training on the marital adjustment of tho se participating. It was of particular interest to identify the effects of training wives only as compared to training couples jointly in assertiveness. There were a total of 56 subjects sampled for this study, constituting 28 marriages, all investigated for marital adjustment. All of the subjects were volunteers and were obtained through the Women\u27s Center at Utah State University. The subjects were placed in one of two treatment conditions depending upon the condition for which they volunteered. The wives only treatment condition provided assertiveness training exclusively for the wives of the couples participating. Both husbands and wives received training in the couples treatment condition. All of the 56 subjects, both husbands and wives, completed the Marital-Adjustment Test during the first and last session of assertive training. The assertive training groups met for six weeks for two hours each week. An analysis of covariance was used to analyze the data for the first two hypotheses. The pretest scores for both treatment conditions for husbands and wives were held constant and the posttest scores on the Marital-Adjustment Test were compared for both husbands and wives of the other treatment condition. The f test for significant differences in correlations was used to test the following questions: (a) Is there a difference in the amount of correlation of the pretest scores and the posttest scores on the Marital-Adjustment Test for husbands and wives in the wives only treatment condition? and (b) Is there a difference in the amount of correlation of the pretest scores and the posttest scores on the Marital-Adjustment Test for husbands and wives in the couples treatment condition? It may be concluded that there is no advantage for marital adjustment when husbands and wives are both given assertiveness training as opposed to the wife only receiving training. There was a statistical difference (beyond the .01 level of significance) between the correlations of the pretest and posttest scores for husbands and wives in the wives only treatment condition. No difference in amount of correlation was found between pretest and posttest scores on the Marital-Adjustment Test for husbands and wives in the couples treatment condition. It was concluded that when spouses were trained together, no change in perceptions of marital adjustment occurred. When wives were trained alone, perceptions of marital adjustment between spouses was in greater agreement. No evidence was found that marital adjustment was affected by teaching assertion skills to the wife only as opposed to teaching the couple

Archaeological Field Techniques and Problems

No abstract is available at this time

Astronomical Data Center Bulletin, volume 1, number 3

A catalog of galactic O-type stars, a machine-readable version of the bright star catalog, a two-micron sky survey, sky survey sources with problematical Durchmusterung identifications, data retrieval for visual binary stars, faint blue objects, the sixth catalog of galactic Wolf-Rayet stars, declination versus magnitude distribution, the SAO-HD-GC-DM cross index catalog, star cross-identification tables, astronomical sources, bibliographical star index search updates, DO-HD and HD-DO cross indices, and catalogs, are reviewed

Astronomical Data Center Bulletin, volume 1, no. 1

Information about work in progress on astronomical catalogs is presented. In addition to progress reports, an upadated status list for astronomical catalogs available at the Astronomical Data Center is included. Papers from observatories and individuals involved with astronomical data are also presented

Space Station crew safety alternatives study. Volume 5: Space Station safety plan

The Space Station Safety Plan has been prepared as an adjunct to the subject contract final report, suggesting the tasks and implementation procedures to ensure that threats are addressed and resolution strategy options identified and incorporated into the space station program. The safety program's approach is to realize minimum risk exposure without levying undue design and operational constraints. Safety objectives and risk acceptances are discussed