Comparison of a residency-based educational model with a traditional clinical education model on perceived clinical decision-making competencies in undergraduate nursing students

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Near-inertial and thermal upper ocean response to atmospheric forcing in the North Atlantic Ocean

Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution June 2010Observational and modeling techniques are employed to investigate the thermal and inertial upper ocean response to wind and buoyancy forcing in the North Atlantic Ocean. First, the seasonal kinetic energy variability of near-inertial motions observed with a moored profiler is described. Observed wintertime enhancement and surface intensification of near-inertial kinetic energy support previous work suggesting that near-inertial motions are predominantly driven by surface forcing. The wind energy input into surface ocean near-inertial motions is estimated using the Price-Weller- Pinkel (PWP) one-dimensional mixed layer model. A localized depth-integrated model consisting of a wind forcing term and a dissipation parameterization is developed and shown to have skill capturing the seasonal cycle and order of magnitude of the near-inertial kinetic energy. Focusing in on wintertime storm passage, velocity and density records from drifting profiling floats (EM-APEX) and a meteorological spar buoy/tethered profiler system (ASIS/FILIS) deployed in the Gulf Stream in February 2007 as part of the CLIvar MOde water Dynamics Experiment (CLIMODE) were analyzed. Despite large surface heat loss during cold air outbreaks and the drifting nature of the instruments, changes in the upper ocean heat content were found in a mixed layer heat balance to be controlled primarily by the relative advection of temperature associated with the strong vertical shear of the Gulf Stream. Velocity records from the Gulf Stream exhibited energetic near-inertial oscillations with frequency that was shifted below the local resting inertial frequency. This depression of frequency was linked to the presence of the negative vorticity of the background horizontal current shear, implying the potential for near-inertial wave trapping in the Gulf Stream region through the mechanism described by Kunze and Sanford (1984). Three-dimensional PWP model simulations show evidence of near-inertial wave trapping in the Gulf Stream jet, and are used to quantify the resulting mixing and the effect on the stratification in the Eighteen Degree Water formation region.This work was supported by National Science Foundation grants OCE-0241354 and OCE-0424865, as well as the Woods Hole Oceanographic Institution's Ocean and Cli- mate Change Institute. Funding to initiate the McLane Moored Pro ler observations at Line W were provided by grants from the G. Unger Vetlesen Foundation and the Comer Charitable Fund to the Woods Hole Oceanographic Institutions Ocean and Climate Change Institute

Wave farm energy yield calculations using a modified spectral wave model

Water Qualit

Chloroplast gene expression during leaf development

The growth and development of the primary leaf of spinach (Spinacia oleracea) have been characterized with respect to both physical and biochemical parameters. Excised primary leaves incorporate [^”*s] methionine into a number of chloroplast polypeptide The ratio of incorporation of isotope into two chloroplast polypeptides, the large subunit of Fraction I protein and a thylakoid polypeptide (peak D), decreases during leaf development in whole leaves. This changing pattern of incorporation is also observed in isolated chloroplasts where these two polypeptides cure the major products of protein synthesis. Chloroplast RNA prepared from developing leaves was translated in a cell-free protein synthesizing system prepared from rabbit reticulocytes to yield full-length large subunit and peak D polypeptides. The fidelity of translation of these two polypeptides was checked by partial protease digestion. Changes in the synthesis of the large subunit of Fraction I protein and peak D in developing leaves are reflected in changes in the amount of translatable mRNA for these two polypeptides. These findings suggest that the expression of chloroplast genes during development is at least partially controlled at the transcriptional level

Gelfand-Tsetlin modules: canonicity and calculations

In this paper, we give a more down-to-earth introduction to the connection between Gelfand-Tsetlin modules over $\mathfrak{gl}_n$ and diagrammatic KLRW algebras, and develop some of its consequences. In addition to a new proof of this description of the category Gelfand-Tsetlin modules appearing in earlier work, we show three new results of independent interest: (1) we show that every simple Gelfand-Tsetlin module is a canonical module in the sense of Early, Mazorchuk and Vishnyakova, and characterize when two maximal ideals have isomorphic canonical modules, (2) we show that the dimensions of Gelfand-Tsetlin weight spaces in simple modules can be computed using an appropriate modification of Leclerc's algorithm for computing dual canonical bases, and (3) we construct a basis of the Verma modules of $\mathfrak{sl}_n$ which consists of generalized eigenvectors for the Gelfand-Tsetlin subalgebra. Furthermore, we present computations of multiplicities and Gelfand-Kirillov dimensions for all integral Gelfand-Tsetlin modules in ranks 3 and 4; unfortunately, for ranks $>4$, our computers are not adequate to perform these computations.Comment: preliminary version; comments encouraged. 51 pages of usual text and some giant tables of multiplicities; if you want to avoid these, download source and follow instructions in main.te

The Effects of Racial/Ethnic and Gender Discrimination on College Students\u27 Self-Esteem

College-aged participants (N=239, 57 men and 182 women) completed two measures, the Rosenberg Self-Esteem Scale—assessing global self-esteem, and the Everyday Discrimination Scale (EDS)—assessing their perceptions of discrimination based on racial/ethnic stereotypes and/or gender stereotypes. The first hypothesis was that negative racial/ethnic discrimination would have a negative impact on self-esteem. The second hypothesis was that negative gender discrimination would negatively impact an individual’s self-esteem. Results on the EDS showed that men had more experiences with perceived discrimination than women (t(239)=2.41, pF(4, 234) = 4.275, p = 0.01). A significant negative correlation was found between the two measures, (r = -0.141, n = 239, p = 0.05), supporting both hypotheses. As self-esteem increases, there are fewer incidences of perceived discrimination

Vienna-London Passage to Safety: The Portrait Photographer As Secondary Witness in Post-Anschluss Émigré Narratives

'Vienna-London Passage to Safety' is a record of twenty-one biographical portraits of Austrian émigrés in photographs and words who fled Austria for Britain in the inter-war period, some as children on the Kindertransport. It is published as a book, and also an exhibition which was shown in London and Vienna. This chapter situates the work and its progenitor as an exemplar of the artist as 'secondary witness', archivist and curator