243 research outputs found
Deeper the blue
No full textCatalogue exhibition : 30 August-1 October 2011Catalogue essay: Glenn Barkley
Les musées et la culture politique : Association des musées canadiens : 39e Congrès annuel = Museums and Political Culture : Canadian Museums Association : 39th Annual Conference
No full textIn addition to a descriptive schedule of daily events, biographical notes on 13 speakers, and visitor information, the program to the 1986 CMA conference held in Victoria includes a brief thematic introduction by Barkley
Portrait of Vice President Alben W. Barkley.
No full textHandwritten inscription: \u27To my friend and fellow worker, Felton M. Johnston - Alben W. Barkley\u27https://egrove.olemiss.edu/fmjohnston/1117/thumbnail.jp
Chest x-ray basics: what every nurse should know
No full textThe purpose of this paper is to provide an introduction of chest radiographs to the bedside nurses. To be able to better promote patient care and safety, nurses should be able to interpret and understand basic results of a chest x-ray. Nurses will be able to tailor patient care based on the results of x-rays. This article provides an introductory review of normal anatomical structures visible on the anterior to posterior chest x-ray. It also provides a systemic approach and guidelines on how to examine the x-ray. Common diseases and their basic presentation on the CXR will also be presented. Finally, central venous catheters, endotracheal, chest tubes, and other devices' positions and placements will be summarized.Anterior-posterior, Basic, Nurse practitioner, Nursing, Radiology, X-rayCommittee members: Thomas W. Barkley, Jr., Gail Washington, Cynthia HughesThesis (M.S.) California State University, Los Angeles, 201
Chest x-ray basics: what every nurse should know
No full textThesis (M.S.)
California State University, Los Angeles, 2012Committee members: Thomas W. Barkley, Jr., Gail Washington, Cynthia HughesAnterior-posterior, Basic, Nurse practitioner, Nursing, Radiology, X-rayThe purpose of this paper is to provide an introduction of chest radiographs to the bedside nurses. To be able to better promote patient care and safety, nurses should be able to interpret and understand basic results of a chest x-ray. Nurses will be able to tailor patient care based on the results of x-rays. This article provides an introductory review of normal anatomical structures visible on the anterior to posterior chest x-ray. It also provides a systemic approach and guidelines on how to examine the x-ray. Common diseases and their basic presentation on the CXR will also be presented. Finally, central venous catheters, endotracheal, chest tubes, and other devices' positions and placements will be summarized
Feast or flee: government payments and labor migration from agriculture in the United States
No full textGovernment payments have been a part of agriculture since 1933 and at no time has the government stated a policy objective of decreasing the agricultural labor force. The reality of the matter may be considerably different. Using time series data and new econometric techniques, this study finds agricultural policy may have an unintended impact on labor migration. Specifically, we find that government payments increased labor migration from the farm. From 1939 to 2007, increased direct government payments resulted in greater migration of labor from agriculture. Government policy appears to have shown limited success at sustaining the agricultural labor force
Heterogeneous effects of warming and drought on selected wheat variety yields
No full textClimate change is likely to significantly impact agricultural production in the Great Plains region of the Central United States. This study estimated the impact of changes in temperature and precipitation on wheat (triticum aestivum) variety yield distributions using the moment-based maximum entropy (MBME) model. This approach allows for quantification of potential weather impacts on the yield distribution, and allows these effects to vary across varieties. The unique data set matches wheat variety trial data for 1985 to 2011 with weather data from the exact trial site for 11 locations throughout Kansas. Ten widely-planted varieties with a range of biotic and abiotic characteristics were included for comparison. Weather scenarios were simulated for baseline, increased temperature (one-degree Celsius warming), decreased precipitation (tenth-percentile rainfall outcome), and a combination warming and drought scenario. Warming resulted in an 11 % yield reduction, drought a 22 % reduction, and warming and drought a cumulative 33 % reduction. These effects vary across varieties. Alternative measures of yield risk (e.g. yield variance and coefficient of variation) were also constructed under each scenario and a similar pattern of heterogeneous impacts emerges. The key findings are that (i) exposure to warming and drought lead to mean yield reductions coupled with increased yield risk for all varieties, and (ii) newer (post 2005) seed varieties have a yield advantage over older varieties, however this advantage is reduced under warming and drought conditions
High-frequency observations from a deep-sea cabled observatory reveal seasonal overwintering of Neocalanus spp. in Barkley Canyon, NE Pacific: Insights into particulate organic carbon flux
No full textMany submarine canyons are known hotspots of pelagic and benthic biodiversity and productivity. Despite a very limited knowledge of the ecology, biodiversity and ecosystem function of Canada's West Coast canyons, Barkley Canyon is becoming a relatively well studied system, particularly after the installation of the NEPTUNE seafloor cabled observatory in 2009. Video observations of large densities of overwintering calanoid copepods (likely a combination of Neocalanus plumchrus, N. cristatus, and a small contribution of N. flemingeri) drifting near the bottom at 970 m in the axis of Barkley Canyon motivated our interest in investigating the temporal dynamics of their ontogenetic migration cycle. Particularly, since these large calanoid copepods, and especially Neocalanus plumchrus, comprise up to 50% of of the mesozooplankton biomass in the subarctic NE Pacific, being considered a keystone species in the trophodynamics of pelagic ecosystems in the region. Here we used ∼20-months (May 2013–Jan 2015) of seafloor video imagery combined with acoustic Doppler current and backscatter time-series data from the NEPTUNE observatory to identify the precise timing and seasonal and inter-annual variability in the deep ontogenetic migration of Neocalanus spp. in Barkley Canyon. A total of 33,486 still images were extracted from 1674 × 5-min segment videos, captured at two-hour intervals, and used in a computer-automated image analysis protocol designed to estimate Neocalanus spp. densities near the seafloor. The results from the entire time-series revealed close correspondence with the described developmental and reproductive cycle for Neocalanus spp., with the highest densities of copepodite-5 (C5) and adult individuals present at depth from the late fall and through the winter. The concomitant high-frequency (2 MHz) ADCP backscatter time-series nearly mirrored the patterns obtained from the video imagery, and also highlighted a clear inter-annual variability, with higher copepod densities in 2013 relative to 2014. Such inter-annual variability was also evidenced by ground-truth net tow casts from Line P and La Perouse monitoring stations in the vicinity of Barkley Canyon. The low and high-frequency ADCP (75 KHz and 2 MHz) current data demonstrated an along axis mean flow near the bottom and an up-canyon mean subsurface flow from 70 to 300 m above the seabed, suggesting a recirculation cell at this segment of the canyon. Based on this circulation pattern and on our video and backscatter data, we propose a conceptual model describing how the topographically-constrained currents along the canyon axis and the up-canyon flow may help trap the seasonally migrating biomass of Neocalaus spp. near the core of its overwintering depth at mid-canyon (∼1000 m). Based on a previously calculated 25-yr mean of carbon export flux attributed to N. plumchrus in the NE Pacific (i.e., 5 g C m2 yr−1; min. 1.44, max 8.82C m2 yr−1 – Bradford-Grieve et al., 2001), which considers respiration and mortality at the overwintering depth throughout winter after spawning, we estimated that 35–215 tons of carbon reach Barkley Canyon's seafloor yearly over an area of approximately 24 km2. Future studies should aim to further constrain the role of submarine canyons in transporting and concentrating deep zooplankton migrating biomass, as there are at least another 230 submarine canyons in the subarctic NE Pacific, a region where zooplankton biomass is heavily dominated by deep ontogenetically migrating calanoid copepods.Canada Foundation for InnovationMinistry of EducationOcean Networks Canada University of Victoria, PO Box 1700 STN CSCDepartment of Biology University of Victoria, PO Box 3080Biosciences Institute São Paulo State University (UNESP) Coastal Campus, Praça Infante Dom Henrique s/n°School of Earth and Ocean Sciences University of Victoria, PO Box 3080Institute of Ocean Sciences Department of Fisheries and Oceans, 9860 W Saanich RdBiosciences Institute São Paulo State University (UNESP) Coastal Campus, Praça Infante Dom Henrique s/n
Turbulent bands in a planar shear flow without walls
No full textThe banded structure of turbulence is observed immediately beyond transition in shear flows with two unconstrained directions (e.g. TCF, PCF, PPF). Yet despite its ubiquitous nature, the mechanisms underpinning bands are not understood to the level of localized turbulence in pipe flow. To this aim we investigate turbulent bands in Waleffe flow, a sinusoidal shear flow, U(y)=sin(pi/2 * y), with stress-free boundary conditions at y=+-1. The existence of turbulent bands in this system demonstrates that walls are not necessary to induce the phenomenon. The sinusoidal nature of the base forcing means the dominant features of bands can be viewed through a small number of Fourier modes in y. Utilizing this simple dependence we examine the emergence of turbulent bands from uniform turbulence
Circulation patterns and processes in Barkley Sound, Vancouver, BC
No full textSenior thesis written for Oceanography 444[author abstract]This study attempts to analyze the
circulation patterns within Barkley Sound, British Columbia, and to better understand these underlying processes. Conductivity, temperature, and depth profiles were taken at
various stations throughout the sound to determine vertical profiles of temperature, salinity, and
oxygen in each of the four main basins: Imperial Eagle Channel, Effingham Inlet, Alberni Inlet,
and Trevor Channel over a seven day period from January, 27th to February 2nd 2013. Oxygen concentrations
and the apparent oxygen utilization (AOU) were used to determine the age of the water and rates
of renewal. It was found that net flow through Barkley Sound is primarily through Imperial
Eagle Channel. Using oxygen as a proxy for the age of water, it was also determined exchange
rates between Alberni and Effingham Inlets with Trevor and Imperial Eagle Channels are
relatively low, due to their extreme isolation by the bathymetry and narrow breadth.University of Washington School of Oceanograph
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