Remote sensing for oceanography: Past, present, future

Oceanic dynamics was traditionally investigated by sampling from instruments in situ, yielding quantitative measurements that are intermittent in both space and time; the ocean is undersampled. The need to obtain proper sampling of the averaged quantities treated in analytical and numerical models is at present the most significant limitation on advances in physical oceanography. Within the past decade, many electromagnetic techniques for the study of the Earth and planets were applied to the study of the ocean. Now satellites promise nearly total coverage of the world's oceans using only a few days to a few weeks of observations. Both a review of the early and present techniques applied to satellite oceanography and a description of some future systems to be launched into orbit during the remainder of this century are presented. Both scientific and technologic capabilities are discussed

A new parameterization of an empirical model for wind/ocean scatterometry

The power law form of the SEASAT A Scatterometer System (SASS) empirical backscatter-to-wind model function does not uniformly meet the instrument performance over the range 4 to 24 /ms. Analysis indicates that the horizontal polarization (H-Pol) and vertical polarization (V-Pol) components of the benchmark SASS1 model function yield self-consistent results only for a small mid-range of speeds at larger incidence angles, and for a somewhat larger range of speeds at smaller incidence angles. Comparison of SASS1 to in situ data over the Gulf of Alaska region further underscores the shortcomings of the power law form. Finally, a physically based empirical SASS model is proposed which corrects some of the deficiencies of power law models like SASS1. The new model allows the mutual determination of sea surface wind stress and wind speed in a consistent manner from SASS backscatter measurements

Switching Majors – Into and Out of Economics

Using student transcripts from six institutions over a 23-year timespan, the authors investigate the movement of students into and out of the economics major. Considerable movement between majors occurs with 83 percent of economics graduates switching in after their first principles course. These eventual majors come from a variety of sources, but primarily from business, engineering, science & math. In an absolute sense, weaker students (as measured by cumulative GPA) switch into economics. However, students appear to move to disciplines of relative academic strength (as indicated by relative grades). While females from other majors are less likely to switch into economics, traditionally underrepresented minorities are largely attracted to economics from other disciplines at similar (or higher) rates to which they persist in originally declared majors

The High Costs of Large Enrollment Classes: Can Cooperative Learning Help?

We examine the potential for cooperative learning activities to offset costs of large enrollment courses. We use a quasi-experimental research design to examine achievement and course perceptions in small and large enrollment sections of microeconomic principles. While large enrollment sections attain lower levels of achievement (measured by course score) than those with smaller enrollments, this effect is partially mitigated by use of cooperative learning. Furthermore, while students in large enrollment sections report lower levels of satisfaction and learning than students in smaller sized classes, the use of cooperative learning eliminates the negative effects of increased class size on student perceptions

Effects of Mental Health First Aid Course: Knowledge, Confidence, and Stigma Among Occupational Therapy Students

In the United States, one in five adults are impacted by some form of mental illness in any given year, but only about 40% of individuals seek professional mental health support. While occupational therapists (OT) may work with individuals with mental illness to improve social skills, activities of daily living (ADLs), instrumental ADLs, and neurocognitive interventions, research suggests there is not enough emphasis on this content in professional OT education. Mental Health First Aid (MHFA) training is designed to educate individuals on mental illness, including how to recognize signs and symptoms and how to support individuals experiencing a concern or crisis. This study examined changes in stigma, knowledge, and confidence among OT students following MHFA training, and compared to a control group. Results demonstrated improved knowledge and confidence within the experimental group, highlighting the impact of MHFA training in this population

Satellite data relay and platform locating in oceanography. Report of the In Situ Ocean Science Working Group

The present and future use of satellites to locate offshore platforms and relay data from in situ sensors to shore was examined. A system of the ARGOS type will satisfy the increasing demand for oceanographic information through data relay and platform location. The improved ship navigation provided by the Global Positioning System (GPS) will allow direct observation of currents from underway ships. Ocean systems are described and demand estimates on satellite systems are determined. The capabilities of the ARGOS system is assessed, including anticipated demand in the next decade

Less Than Full-time Training in surgical specialities: Consensus recommendations for flexible training by the Association of Surgeons in Training

AbstractChanges in lifestyle, career expectations, and working environments, alongside the feminisation of the workforce have resulted in an increased demand for Less Than Full-time Training (LTFT) within surgery. However, provision of and adequacy of flexible training remain variable. It is important that LTFT options are provided to ensure surgery is an attractive and viable career option, and can compete with other specialties to attract and retain the best candidates to maintain high standards of patient care. LTFT options should be readily available to both genders within surgical specialities. Furthermore, improved information for those considering LTFT should be available, locally, regionally and nationally. Training within LTFT posts should be tailored to the training requirements of the individual, in order to achieve the competencies necessary for completion of training. The recommendations set out in this consensus statement should inform the trainee's position and help guide discussions with respect to the provision of LTFT within surgery