Douglas Clark

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Endocrine function was assessed in 31 children (17 boys) after fractionated total body irradiation used in the preparative regimen for bone marrow transplantation. Endocrine dysfunction was present in 25 children. Fifteen of 29 had growth hormone insufficiency 0.9-4.9 years after total body irradiation, yet only three of the 15 had received previous cranial(More)
–A testbed for evaluation of general-purpose digital signal processors in earth-orbiting radar scatterometers is discussed. Because general purpose DSP represents a departure from previous radar signal processing techniques used on scatterometers, there was a need to demonstrate key elements of the system to verify feasibility for potential future(More)
BACKGROUND Survivors of childhood, adolescent, and young adult cancer are known to be at risk of late effects of their disease and its treatment. Most population-based studies of cancer survivors have reported on second primary cancers and mortality. The aim of this study was to research acute and psychiatric hospital admission rates and length of stay in(More)
abstraCt A workshop held at the National Academies in the United States in 2007 highlighted five broad categories of skills that appear valuable across a range of jobs for people working in modern global economies. Engaging students in scientific argumentation can support the development of these 21 st century skills. Unfortunately, opportunities are rare(More)
Over the last decade, researchers have developed sophisticated online learning environments to promote argumentative discourse between students. This symposium examines some of the diverse ways researchers have attempted to examine how students engage in argumentation and to assess the effectiveness of CSCL environments in fostering productive(More)
CSCL includes a wide range of scenarios that integrate individual and collaborative learning. Scripts have repeatedly proven useful for guiding learners to engage in specific roles and activities in CSCL environments. The effective mechanisms of scripts in stimulating cognitive and collaborative processes, however, are not yet well understood. Moreover,(More)
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