Learn More
We have determined the congener compositions of nine commercial Aroclor products of polychlorinated biphenyls (PCBs) to the sub-part-per-million level using high-resolution gas chromatography combined with high-resolution mass spectrometry according to US Environmental Protection Agency (EPA) Method 1668A. These Aroclor composition data should allow(More)
This is a discussion paper. It has been prepared to facilitate the exchange of knowledge and to stimulate discussion. The findings, interpretations and conclusions expressed in this paper are those of the author(s) and do not necessarily reflect the policies or views of UNICEF. The text has not been edited to official publication standards and UNICEF(More)
This paper presents a learner-centered model for designing e-learning assignments/activities within e-learning environments. The model is based on constructivism learning theory. The model includes two categories-the learning design elements (comprised of fundamental design elements and collaborative elements) and the learning assessment elements(More)
Executive Summary This paper attempts to present a model for designing an IT undergraduate program that is based on the recommendations of the Association for Computer Machinery/ Institute of Electrical and Electronics Engineers – Information Technology (ACM/IEEE – IT) Curriculum Model. The main intent is to use the ACM/IEEE – IT Curriculum Model's(More)
Ultra-wideband (UWB) systems that radiate very high-level transient waveforms and exhibit operating bandwidths of over two decades are now i n demand for a number of applications. Such systems are known to radiate impulse-like waveforms with risetimes around 100 picoseconds (ps) and peak electric field values of 10s of kV/m. Such waveforms, if properly(More)
Culturally appropriate, theory-based capacity-building assistance can serve a vital role in helping HIV prevention providers remain up-to-date, effective, and responsive to those they serve. Funded by the Centers for Disease Control and Prevention (CDC), AIDS Project Los Angeles, in collaboration with San Francisco State University's César E. Chávez(More)
ii This page intentionally left blank. iii Foreword Following the collapse of the World Trade Center on September 11, 2001, federal, state, and municipal health and environmental agencies initiated numerous studies to assess environmental conditions in the area. A multi-agency task force was specifically formed to evaluate indoor environments for the(More)
Postpartum mood and anxiety disorders (PMADs) are the most underdiagnosed, underreported, and undertreated complication of childbirth with up to 400,000 infants born in the United States every year to mothers who are depressed (Earls, 2010). Universal screening has not yet been mandated within the United States, which leaves many organizations struggling to(More)