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· 2006
Aktuelles auf höchstem Niveau auch bei kniffligen Fällen auf Fragen zu Technik, Differenzialdiagnose und Geräteeinstellung Alle Abbildungen mit sehr hoher Detailgenauigkeit Mehr als und Grafiken Sie diskutieren das Krankheitsbild auf einer Augenhöhe mit dem Kliniker Der sichere Weg zu.
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The collection consists of two scrapbooks which contain mostly newspaper clippings documenting Zastrow's political career. There are also some materials of a purely personal nature and articles on the Iowa legislature as a whole. A letter in the collection indicates that the scrapbooks were compiled by Zastrow's brother, Carleton M. Mull.
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· 2016
"Profoundly influenced by two post-9/11 protracted wars which highlighted the expanded role of women in combat, civilian leaders have pursued a gender-neutral military. The premise is women are not only qualified but bring a wealth of diverse talents that should be applied across all disciplines within the Armed Forces and, as true equals, women should be afforded the opportunity to ascend to more senior ranks in greater numbers. However, policy makers appear to have overlooked decades of medical research and evidence that strongly counter this seemingly straight forward logic. Arguably, integrating women in the Marine Corps' infantry will degrade readiness, deplete a talented pool of women from the total force, and erode combat effectiveness. Physiological differences affect attrition and readiness when exposing women to training that accentuates the disparities between genders. Given the Marine Corps' distinct approach to its mission, and comparatively small size, it already has the lowest percentage of women across all the services. As such, the Marine Corps' methodology of training its force, coupled with the physical demands of the direct ground combat arms specialties, will lead to a talent management issue. The potential outcome is a further reduction in the number of women in the service resulting in a less integrated and less diverse force. Ramifications of failure include high attrition, which will ultimately drive the redress of standards to correct discrepancies and disparities between genders, thereby degrading combat effectiveness. As an alternative, Congress should enact law prohibiting women from integration into direct ground combat arms specialties and allow military leaders to channel resources for recruiting and retaining women in the roles where they are best-qualified and fully capable of performing"--Abstract.
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· 2011
Coastal foredunes protect lives, infrastructure, and ecosystems during severe winter storms. In the U.S. Pacific Northwest (PNW), coastal foredune geomorphology is determined by both physical and ecological mechanisms. Before the 1900's, the native plant Elymus mollis was the dominant dune grass and dune morphology was largely determined by sediment supply and other physical factors. The introduction of two different invasive beach grasses in the first half of the 20th century resulted in significant changes to PNW foredune geomorphology. Recent work has shown that the invasive beach grass Ammophila arenaria is associated with taller, narrower foredunes while the grass Ammophila breviligulata is associated with shorter, broader foredunes. We hypothesize that this may impact coastal vulnerability as the taller, narrower foredunes may be more resistant to overtopping, but less resistant to erosion, while the shorter, broader foredunes may be more resistant to erosion, but less resistant to overtopping. The work presented in this thesis is part of a larger, interdisciplinary effort to determine the relative importance of physical and ecological mechanisms in controlling coastal foredune geomorphology and vulnerability in the PNW. Airborne topographic lidar data is used to characterize the regional variability in foredune geomorphology within several littoral cells, subcells, and beaches of the PNW. We present and discuss techniques to automatically and accurately extract foredune morphometric parameters from a lidar elevation data set of the coasts of Oregon and Washington. If the different grass species do affect foredune geomorphology, it is important to understand how managing them might impact coastal vulnerability. Therefore, we use the geomorphological parameters and measured hydrodynamic parameters during a major winter storm to estimate vulnerability to overtopping and erosion at beaches with distinctly different foredunes. Estimates of overtopping and erosion are normalized by the foredune heights and widths to elucidate how the different foredune types, and possibly the associated beach grasses, affect vulnerability. A series of simple foredune erosion models including a geometric model, an equilibrium profile model, and a wave impact model are evaluated for applicability to the PNW coast.
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· 2016
In the current study, academic optimism (including trust in professors, academic press, and identification with university) and study habits were explored as predictors of two dimensions of test anxiety: worry and emotionality. Using multiple linear regression, surface approach study habits and trust in professors emerged as predictors of worry, whereas identification with university emerged as a predictor of emotionality. Surface approach study habits and trust in professors accounted for 24% of the variance for worry, and identification with university accounted for 12% of the variance for emotionality. These relations held true for female students only. Future studies should continue to investigate the predictive value of academic optimism and study habits in college student test anxiety, as well as continuing to identify other predictive factors.
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· 2008
"The purpose of this study is to investigate the dynamic wind field and resulting ocean circulation patterns in the Bering and Chukchi Seas. This region forms an important link in global ocean circulation as Bering Strait is a major conduit for water flowing into the Arctic Ocean. The Arctic has been identified as an area sensitive to climate change; thus it is vital to understand how water and energy flow through this region. We first quantify the differences between the winds measured in this region by the Quik Scatterometer (QuikSCAT) and those modeled by the National Centers for Environmental Prediction (NCEP). Although the data sets are well correlated, we find significant discrepancies between these data sets and use linear regressions to correct the NCEP data. The magnitudes of the NCEP wind components are greater than the magnitudes of the QuikSCAT wind components. This creates directional differences between the two data sets at low wind speeds and NCEP speeds that are greater than QuikSCAT speeds at high wind speeds. We next challenge the assumption that the wind field is spatially uniform over the Bering and Chukchi shelves. We produce mean monthly maps of the wind field, surface Ekman transport, and wind variance based upon the 12-hourly QuikSCAT data from July 1999 - May 2007. These maps reveal that the winds are spatially and temporally dynamic in this region. There are several areas and times in which surface Ekman transport is onshore or offshore near the coasts and may engender coastal downwelling and upwelling, respectively. There are also several instances when surface Ekman convergence and divergence may lead to Ekman pumping and suction. We use the entire NCEP record (January 1948 - May 2007) to examine patterns of surface Ekman transport across the shelf break. There was a significant increase in the amount of onshelf surface Ekman transport that coincided with the regime shift that occurred in the Bering Sea in the mid- 1970s. We attempt to correlate the time series of surface Ekman cross-shelf transport with several climate indices but find only very weak correlations. The annual surface Ekman freshwater fluxes across the shelf break are calculated and found to be very small compared to the total annual freshwater fluxes calculated by Aagaard et al. (2006) and Kinney et al. (2008). To resolve the dominant modes of wind variability we compute hourly, monthly, and annual Complex Empirical Orthogonal Functions (CEOFs) with the QuikSCAT and NCEP data sets. The first modes in each analysis account for more than 60% of the variance. Different aspects of the mode amplitude time series are cross-correlated with climate and indices to produce small but significant correlation coefficients. Finally we calculate Ekman pumping and suction at four locations in the Bering Sea during the spring and summer months of seven years (2000 - 2006). We identify regions and times when Ekman pumping and suction were particularly strong, and perform several runs of a one-dimensional Price-Weller-Pinkel (PWP) vertical mixing model with the QuikSCAT winds, the QuikSCAT winds and a wind-stress-curl term, and the NCEP winds. The results suggest that Ekman suction might facilitate subsequent vertical mixing while Ekman pumping might inhibit subsequent vertical mixing when the winds are generally weak and wind-stress-curl is moderate or strong. The temporal resolution of the QuikSCAT data set is too low to resolve inertial motions at high latitudes. The NCEP data set has higher temporal resolution and is adequate for running the model within this region. We propose interpolating the hourly NWS data collected at St. Paul Island (station PASN) to the QuikSCAT grid using the complex amplitudes and phases from the complex cross-correlations between the two data sets to produce a data set of high temporal and spatial resolution. This would enable researchers to accurately resolve inertial motions and compute wind-stress-curl"--Leaves iii-iv.
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· 1985
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