20,606 research outputs found

    Dartmouth Outward Bound Center and the rise of experiential education 1957-1976

    Get PDF
    Purpose: The article discusses Outward Bound’s participation in the human potential movement through its incorporation of T-group practices and the reform language of experiential education in the late 1960s and early 1970s. Design/methodology/approach: The article reports on original research conducted using materials from Dartmouth College and other Outward Bound collections from 1957-1976. It follows a case study approach to illustrate themes pertaining to Outward Bound’s creation and evolution in the United States, and the establishment of experiential education more broadly. Findings: Building on prior research (Freeman, 2011; Millikan, 2006), the present article elaborates on the conditions under which Outward Bound abandoned muscular Christianity in favor of humanistic psychology. Experiential education provided both a set of practices and a reform language that helped Outward Bound expand into the educational mainstream, which also helped to extend self-expressive pedagogies into formal and nonformal settings. Research implications: The Dartmouth Outward Bound Center’s tenure coincided with and reflected broader cultural changes, from the cold war motif of spiritual warfare, frontier masculinity, and national service to the rise of self-expression in education. Future scholars can situate specific curricular initiatives in the context of these paradigms, particularly in outdoor education. Originality/value: The article draws attention to one of the forms that the human potential movement took in education – experiential education – and the reasons for its adoption. It also reinforces emerging understandings of post-WWII American outdoor education as a product of the cold war and reflective of subsequent changes in the wider culture to a narrower focus on the self

    Stellar Populations in Spiral Galaxies

    Get PDF
    We report preliminary results of the characterization of bulge and inner disk stellar populations for 8 nearby spiral galaxies using Gemini/GMOS. The long-slit spectra extend out to 1-2 disk scale lengths with S/N/Ang > 50. Two different model fitting techniques, absorption-line indices and full spectral synthesis, are found to weigh age, metallicity, and abundance ratios differently, but with careful attention to the data/model matching (resolution and flux calibration), we are able constrain real signatures of age and metallicity gradients in star-forming galaxies.Comment: 4 pages, 3 figures. To appear in the proceedings for IAUS 241 "Stellar Populations as Building Blocks of Galaxies", Eds. R.F. Peletier and A. Vazdeki

    Political vs. Currency Premia in International Real Interest Differentials: A Study of Forward Rates for 24 Countries

    Get PDF
    Different approaches to quantifying the degree of capital mobility for a cross-section of currencies -- particularly saving-investment correlations and tests of real interest parity - have appeared to show a surprisingly low degree of financial market integration. We use a new data set, forward rate data for 24 countries, including many small industrialized countries and seven LDCs, to decompose the real interest differential into two parts: the covered interest differential, or political premium, and the real forward discount, or currency premium. The latter in turn can be decomposed into the exchange risk premium and expected real depreciation. We find a high degree of capital mobility across political boundaries for most of the 011 countries, plus Hong Kong and Singapore, for our sample period of 1982 to 1987. Even for most of the other LDCs and smaller industrialized countries, for which covered interest parity clearly fails, the political premium is not as big a component of the real interest differential as the currency premium. France would appear to have higher capital mobility than most by the criterion of real interest differentials, but is seen in fact to have low capital mobility by the criterion of covered interest differentials, a clear example of the superiority of the latter criterion.

    Integrated Stellar Populations: Confronting Photometry with Spectroscopy

    Full text link
    We investigate the ability of spectroscopic techniques to yield realistic star formation histories (SFHs) for the bulges of spiral galaxies based on a comparison with their observed broadband colors. Full spectrum fitting to optical spectra indicates that recent (within ~1 Gyr) star formation activity can contribute significantly to the V-band flux, whilst accounting for only a minor fraction of the stellar mass budget which is made up primarily of old stars. Furthermore, recent implementations of stellar population (SP) models reveal that the inclusion of a more complete treatment of the thermally pulsating asymptotic giant branch (TP-AGB) phase to SP models greatly increases the NIR flux for SPs of ages 0.2-2 Gyr. Comparing the optical--NIR colors predicted from population synthesis fitting, using models which do not include all stages of the TP-AGB phase, to the observed colors reveals that observed optical--NIR colors are too red compared to the model predictions. However, when a 1 Gyr SP from models including a full treatment the TP-AGB phase is used, the observed and predicted colors are in good agreement. This has strong implications for the interpretation of stellar populations, dust content, and SFHs derived from colors alone.Comment: 6 pages, 6 figures, accepted for publication in the Astrophysical Journa

    Hamilton-Jacobi Theory and Moving Frames

    Get PDF
    The interplay between the Hamilton-Jacobi theory of orthogonal separation of variables and the theory of group actions is investigated based on concrete examples.Comment: This is a contribution to the Vadim Kuznetsov Memorial Issue on Integrable Systems and Related Topics, published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA

    Environmental Effects in the Evolution of Galactic Bulges

    Get PDF
    We investigate possible environmental trends in the evolution of galactic bulges over the redshift range 0<z<0.6. For this purpose, we construct the Fundamental Plane (FP) for cluster and field samples at redshifts =0.4 and =0.54 using surface photometry based on HST imaging and velocity dispersions based on Keck spectroscopy. As a reference point for our study we include data for pure ellipticals, which we model as single-component Sersic profiles; whereas for multi-component galaxies we undertake decompositions using Sersic and exponential models for the bulge and disk respectively. Although the FP for both distant cluster and field samples are offset from the local relation, consistent with evolutionary trends found in earlier studies, we detect significant differences in the zero point of ~=0.2 dex between the field and cluster samples at a given redshift. For both clusters, the environmentally-dependent offset is in the sense expected for an accelerated evolution of bulges in dense environments. By matching the mass range of our samples, we confirm that this difference does not arise as a result of the mass-dependent downsizing effects seen in larger field samples. Our result is also consistent with the hypothesis that - at fixed mass and environment - the star formation histories of galactic bulges and pure spheroids are indistinguishable, and difficult to reconcile with the picture whereby the majority of large bulges form primarily via secular processes within spiral galaxies.Comment: 5 pages, 3 figures, accepted for publication in ApJ Letter

    Experiencing absence: Eisenman and Derrida, Benjamin and Schwitters

    Get PDF
    Deconstruction in architecture has made great claims to decentre the human subject. Architects such as Peter Eisenman claim to work with the concepts and history of architecture in a way which is free of any false hopes for a final return to an apprehension by a human subject whose needs are the origin of the discipline. However, much of the architecture of deconstruction is not consistent in this aim and, as Jacques Derrida has pointed out, indulges itself instead in constructing an experience of absence. In the politics of the discipline 'deconstruction' plays the role of a rationalist, knowledge-centred architecture, which stands in opposition to a humanist, phenomenological approach which valorizes experience. The non-sequitur 'experience of absence' forms a circuit in this pattern of oppositions and thus deconstruction in architecture tends towards being a mere negative theology, a reversed humanism. Moreover, the architectural project of constructing experiences of otherness or the absence of a privileged subject position is not unfamiliar. Kurt Schwitters' Merzbau can be shown to take mental constructs, such as the history and politics of the avant-garde, and to play them against devices which have the aim of bringing to consciousness an apprehension of the body as a perceptual apparatus. Walter Benjamin's contemporary texts on the conceptualization of experience in relation to art, technology and the city can be used to provide terms for an description of the Merzbau. The point is not to further the analysis of the Merzbau nor to exemplify Benjamin's theory but rather to remember the breadth and sophistication of these early twentieth century inquiries into experience, when compared to the present architectural deconstruction both of 'experience' and 'constructivism'. The purpose of the comparison is not to admonish Eisenman for lack of originality but rather to make a point about the hubris of 'deconstructing' categories which have already been destroyed by history

    The Image as an architectural material

    Get PDF
    There is at present a fashion for the application of images onto building facades. The most common line of comment on this phenomenon is to fetishize "the image". According to such accounts, images have changed their status or locale, and become monstrous hybrids of human consciousness and the Internet. They have come to be on buildings through some will or teleology of their own, lessening the materiality of building and threatening the culture of architecture. Or so the story goes. Few remark on another obvious aspect of this trend, which is that of the relatively recent availability and rapid uptake of the technical means for the application of images onto buildings. As early as the nineteen forties, J L Sert, F Leger and S Geidion were calling for a new civic iconography of kinetic sculpture, which was to include fireworks and large-scale projection and murals. None of this was very practical, however, until the last few years when mega-screens and large-scale banner printing became available. Similarly, we have only recently gone beyond nineteenth century techniques in the etching of images into glass and masonry. To a certain extent, these two observations reverberate within the work of Walter Benjamin and his famous attempt to argue at a most general level for an interrelation of histories of technology and mentality
    corecore