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Web 2.0: Risks for STI/HIV - Opportunities for Prevention
is lecture explores the risks and prevention opportunities presented by the emergence of social networking and internet dating sites. Presented by the Department of Population, Family, and Reproductive Health
Author(s): Kees Rietmeijer, MD, PhD

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Content within individual OCW courses is (c) by the Johns Hopkins University and individual authors unless otherwise noted. JHSPH OpenCourseWare materials are licensed under a Creative Commons License

Virtual Pedagogical Agents as Aids for High School Physics Teachers
The Pathway project is improving the quality of physics teaching and the number of available physics teachers by providing virtual expert help on issues of pedagogy and content. The project combines Carnegie Mellon’s Synthetic Interviews and state-ofthe- art digital video library technology with pedagogical advances developed at Kansas State University, and materials contributed by master teachers. The Synthetic Interview is a technology and technique that creates an anthropomorphic interface i
Author(s): Stevens Scott,Zollman Dean,Christel Michael,Adrain

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Motor Skills: Prelocomotor HQ
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Moursund Mathematics Lecture Series. Dr. Jacob Lurie, Lecture 2: “Ambidexterity”
In classical algebraic geometry, there is often a stark difference between the behavior offields of characteristic zero (such as the complex numbers) and fields of characteristic p (such as finite fields). For example, the equation x^p = 1 has p distinct solutions over the field of complex numbers, but only one solution over any field [...]
Author(s): U O

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Efficient object based streaming framework for web-based education
An efficient moving object extraction algorithm suitable for real-time content-based multimedia streaming systems is proposed in this paper. A Motion Vector (MV) based object extraction is used to dynamically detect the objects. To utilize the bandwidth efficiently, the important object can be real time detected, encoded, and transmitted with higher quality and higher frame rate than those of background. In order to meet the real-time requirement, no computationally intensive operation is includ
Author(s): Ahmad Ashraf M. A.,El-Seoud Samir A.

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What's Gotten Into You?
In this activity, students use models to investigate the process and consequences of water contamination on the land, groundwater, and plants. This is a good introduction to building water filters found in the associated activity, The Dirty Water Project.
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Water Power
In this activity, students observe a model of a waterwheel to investigate the transformations of energy involved in turning the blades of a hydro-turbine into work. Students work as engineers to create a model for a new waterwheel while considering resources, such as time and materials, in their design. Students also discuss and explore the characteristics of hydropower plants.
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Internet Scout Project
In June 2000, the Fourteenth Symposium on Thermophysical Properties was held to review the progress of thermophysics over the last 100 years and to look forward to the next century of research and development in thermophysics. The National Institute of Standards and Technology (NIST) provides a special publication online covering the event, including overviews of topical issues by professionals in the field and several brief, invited essays on issues raised in the forum by panelists, audience pa
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The Lamont-Doherty Earth Observatory Deep-Sea Sample Repository archives sediment and rock deep-sea core data for marine geology and oceanographic research and education. Students can learn about the process of taking the cores, the characteristics of the specimens collected, and their benefits. Researchers can search over 300 datasets for cores sites, mineralogy, micropaleontology, and other core data. Scientific investigators can find out how to obtain samples from the cores. This expansive we
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Internet Scout Project
"The NIST X-ray Photoelectron Spectroscopy (XPS) Database gives easy access to the energies of many photoelectron and Auger-electron spectral lines." The website offers concise definitions of the data fields. Users can search the element data by binding energy, auger kinetic energy, auger parameter, doublet separation, chemical shift, or surface/interface core-level shift. The website allows users to retrieve data for groups of elements, an element in a compound, chemical name, and chemical clas
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7 Immediate treatment of cardiovascular diseases

Treatment obviously depends on the severity of cardiovascular diseases at presentation and any safety considerations. Medications (pharmaceutical drugs) are available to treat many of the symptoms and slow the progression of cardiovascular diseases. Some are used for specific purposes, whereas others are useful for a range of cardiovascular diseases. In certain circumstances, individuals may not be able to take one type of medication and will be prescribed something else to serve the same fun
Author(s): The Open University

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Copyright © 2016 The Open University

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The report "presents a comprehensive assessment of the Agency's annual performance toward the strategic goals and objectives in the Agency's September 2000 Strategic Plan... and... focuses on environmental accomplishments and benefits to the public resulting from implementation of Agency programs." Visitors can download or read online performance results in the agency's efforts for clean air and water, preventing pollution, waste management, reducing global and cross border risks, and providing
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Cognitive processes in solving variants of computer-based problems used in logic teaching
The effect of two instructional variables, visualisation and manipulation of objects, in learning to use the logical connective, conditional, was investigated. Instructions for 66 first-year social science students were varied in the computer-based learning environment Tarski's World, designed for teaching first-order logic (Barwise & Etchemendy, 1992. The language of first-order logic: including the Microsoft Windows program Tarski's World 4.0 for use with IBM-compatible computers. Stanford, CA
Author(s): Eysink Tessa,Dijkstra Sanne,Kuper Jan

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"Earth Force engages young people as active citizens who improve the environment and their communities now and in the future." Educators can learn about Earth Force's three programs: Community Action and Problem solving (CAPS), the Global Rivers Environmental Education Network (GREEN), and Earth Force After School. Users can discover students' many accomplishments such as creating reusable fabric grocery bags, recycling cell phones and ink cartridges to earn money, and cleaning up litter. The To
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Purdue University created this website to promote its organic chemistry department's diverse research initiatives. This expansive website provides links to materials on twelve of the faculty's chemistry research groups. Research includes NMR imaging of micellar solutions, hydride fuel cell examinations, dimerization inhibitors of transcription factors, and gas phase synthesis. Users can find lists of the many publications and view images and photos of the division's work and facilities. Visitors
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In his State of the Union Address on January 28, 2003, President Bush made a case for further fuel cell development. Current efforts in this area have not determined how to efficiently produce or extract hydrogen for the cells. In hopes of solving this problem, Bush proposed a $1.2 billion FreedomFUEL initiative. FreedomFUEL is closely related to the FreedomCAR program, which has its homepage at the second site. News releases and fact sheets are available, as well as overviews of fuel cells and
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Lecture 18 - 11/30/2010
Lecture 18
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The Wellcome Trust Sanger Institute: The Cancer Genome Project
Supported by the Wellcome Trust Sanger Institute, the Cancer Genome Project (CGP) "is using the human genome sequence and high throughput mutation detection techniques to identify somatically acquired sequence variants/mutations and hence identify genes critical in the development of human cancers. This initiative will ultimately provide the paradigm for the detection of germline mutations in non-neoplastic human genetic diseases through genome-wide mutation detection approaches." The CGP websit
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This Topic in Depth explores the field of surface chemistry. First, the American Chemical Society's (ACS) Division of Colloid and Surface Chemistry publicizes its members initiatives to "investigate the interaction of surfaces with fluids having molecular densities spanning the range from liquids to ultra-high vacuum" (1). Researchers can find out about upcoming meetings, awards, and membership opportunities. The second website presents Chalmers University of Technology's research activities in
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Essential Science for Teachers: Life Science: Session 4. Plant Life Cycles
What is a plant? One distinguishing feature of members of the Plant Kingdom is their life cycle. In this session, flowering plants serve as examples for studying the plant life cycle by considering the roles of seeds, flowers, and fruits. A comparison to animal life cycles reveals some surprising similarities and intriguing differences.,This segment looks at the similarities between plants and animals. Children give their ideas about seeds. Most children believe that plants do not reproduce se
Author(s): Harvard-Smithsonian Center for Astrophysics

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Corporation for Public Broadcasting "All Rights Reserved"

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