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Facebook's new messaging tool
After much speculation, social media site Facebook unveiled its new all-in-one messaging service, which combines email, text and instant messaging.
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Lecture 22 - 11/12/2010
Lecture 22
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Lecture 23 - 11/15/2010
Lecture 23
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Intimate Partner Violence on Campus: A Test of Social Learning Theory
The current study sought to examine the theoretical field of intimate partner and domestic violence research. The research focused on integrated social learning, power-control, and fundamental components of intergenerational transmission and male-support theories. The use of the Conflict Tactic Scale (CTS 2), Seller’s (2003) social learning subscale, and a combination of measures of power-control theory were used to determine the relative strength of learning, power, and male social networks i
Author(s): Bell, Keith J

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A Study of the Response to Accountability and Standardized Testing in a State University System: Pre
This study was an investigation of the perceptions of university certification officers in teacher education in a state university system regarding university responses to accountability, standardized testing, predictive models, gatekeeping, and intervention strategies, and incorporates the issues of social justice and ethics. This study also includes the development of a predictive model to predict results on the Praxis II Elementary Education: Curriculum Instruction and Assessment (ELED:CIA) t
Author(s): Barton, Mary Lynn

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Expatriate Spaces, Ex-Soviet Places: Narratives of Americans Abroad in Turn-of-the-Millennium Post-C
The arrival of countless young North Americans into post-Cold War Central and Eastern Europe coincided with a U.S. recession, the collapse of Soviet influence in the former Warsaw Pact countries, and the consequential easing of travel restrictions. I show how overlooked narrative representations of sojourning Western twentysomethings carving out a space for themselves and negotiating their role in a newly internationalized place demonstrate a redefining of the American expat identity as a perfor
Author(s): Hobbs, Burgsbee Lee

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MODELING CONCEPT DESIGN OF INNOVATION PLATFORM
The transformation of the innovation processes is a fact and new forms of cooperation and partnership among companies and research community emerge. The paper presents a model of concept design of Innovation platform, based on the 4 networked innovation models. Knowledge management is a common approach, providing opportunity for better knowledge exploitation in innovation life-cycle and considering new types of cooperation among innovation seekers and innovation providers. The Innovation platfor
Author(s): Antonova Albena,Nikolov Roumen

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A Bayesian Student Model without Hidden Nodes and Its Comparison with Item Response Theory
The Bayesian framework offers a number of techniques for inferring an individual's knowledge state from evidence of mastery of concepts or skills. A typical application where such a technique can be useful is Computer Adaptive Testing (CAT). A Bayesian modeling scheme, POKS, is proposed and compared to the traditional Item Response Theory (IRT), which has been the prevalent CAT approach for the last three decades. POKS is based on the theory of knowledge spaces and constructs item-to-item gra
Author(s): Desmarais Michel C,Pu Xiaoming

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Learning in the Age of Ubiquitous Computing: Exploring the Impact of Mobile Technologies on Individu
This paper explores the emergence of a pervasive learning culture within the context of ubiquitous computing scenarios. Furthermore, this paper examines the impact of mobile technologies on collaborative learning and highlights the key characteristics of these phenomena.
Author(s): Kramer Mark A.M.,Mirlacher Thomas

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Culture, Politics, and Community: Living Public Health in Nigeria
In this lecture, Professor Brieger discusses some of the lessons he learned during his 26-year experience working in Nigeria and his subsequent work with a wider variety of African nations, focusing on on tropical diseases and their associated social, cultural, and behavioral aspects.
Author(s): Bill Brieger

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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

MPH Capstone Honors Recipients 2008
MPH candidates are required to prepare capstone projects to complete their degree program. Each year, special honors were given to ten students for the best overall capstone projects. Presentations from three of the ten 2008 honors recipients are posted.
Author(s): Christina Chang, Olivia Lindly, and Dana Kinderman

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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

All Caught Up: Bycatching and Design
Bycatch, the unintended capture of animals in commercial fishing gear, is one of the hottest topics in marine conservation today. About 25% of the entire global catch is by-catch This surprisingly high level of by-catch is responsible for the decline of hundreds of thousands of dolphins, whales, porpoises, seabirds and sea turtles each year. Through this curricular unit, students will analyze the significance of by-catch in the global ecosystem and propose solutions to help reduce by-catch Stude
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Freshman Organic Chemistry
This is the first semester in a two-semester introductory course focused on current theories of structure and mechanism in organic chemistry, their historical development, and their basis in experimental observation. The course is open to freshmen with excellent preparation in chemistry and physics, and it aims to develop both taste for original science and intellectual skills necessary for creative research.
Author(s): mvd4

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Using Interaction Analysis to reveal Self-Regulated Learning in Virtual Communities
Aim of this paper is to analyse whether Interaction Analysis can help investigate the practice and development of Self-Regulated Learning (SRL) in Virtual Learning Communities (VLC). Interaction analysis is increasingly used to study learning dynamics within online activities. It proceeds by searching expressions that reveal the aspects under study in the written messages exchanged by the learners. To this end, we devised and classified a number of indicators suggesting the existence of self-re
Author(s): Dettori Giuliana,Persico Donatella

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Internet Scout Project
Operating as the nonprofit research campus of the University and Community College System of Nevada, the Desert Research Institute (DRI) conducts more than $27 million in environmental research each year with the help of its approximately 400 research faculty and support staff. The informational research page of the main Web site offers descriptions; publications; links; and other relevant facts from the various arms of the institute, which include the Division of Atmospheric Sciences, Division
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Mapcar: a framework to support the elaboration of the conceptual model of a Knowledge Based System
Constructing a knowledge based system requires the identification of the conceptual primitives and problem-solving strategy that will permit capturing the expertise in an adapted way. This paper presents an approach to support the elaboration of such a conceptual model by data-abstraction. Our work is motivated by the objective of constructing models that correspond to how experts solve problems, which is required for some applications, as, for example, presenting problem-solving in an education
Author(s): Tchounikine Pierre

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Internet Scout Project
One of the most important pieces of technology being used to search Iraq for evidence of weapons is a 48-year old spy plane. The U-2, which was first flown in the beginnings of the Cold War, has withstood the test of time and continues to be widely used by the US. This site provides details about the history of the U-2. It also describes many technical aspects involved in flights, such as the advanced sensor systems and pilot life support.
Author(s): Bonne, Jon.

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Internet Scout Project
This site, posted by the US Department of Energy's Sandia National Laboratories, "provides access to a comprehensive set of databases on metal-hydrogen systems, their properties, applications, literature sources, and profiles of organizations involved in metal-hydrogen development." Metal hydrides are important because they are commonly used in batteries and as hydrogen fuel storage cells for autos and power generation (a fossil fuel alternative). The technical part of the database has hydride m
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Stagecast Creator™ and Webct™: An integrated use of computer programming and a virtual learning en
This paper reports on an effort to use Stagecast Creator™ as a means for developing modelling skills among undergraduate students taking an introductory course in science that took place in a virtual learning environment (WebCT™). An inquiry-based curriculum was implemented, which guided students working in small groups to collect and study moon observations and construct a series of successive models of the moon phases using Stagecast Creator™. Students’ reflective journals and reports of s
Author(s): Nicolaou Christiana Th.,Constantinou Constantinos

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Internet Scout Project
The Understanding the Universe Web site is part of Discovery.com's excellent educational resource DiscoverySchool.com site and is a joint effort with the American Museum of Natural History. This attractive site contains three major sections. The It's Awesome page has a time line of the universe that links to the Universe in One Year page -- a great way of learning the difficult concept of geologic time by showing that, if the history of the universe was compressed into one year, modern humans wo
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