SRI International

About: SRI International is a nonprofit organization based out in Menlo Park, California, United States. It is known for research contribution in the topics: Ionosphere & Laser. The organization has 7222 authors who have published 13102 publications receiving 660724 citations. The organization is also known as: Stanford Research Institute & SRI.

Analyzing Teachers' Professional Interactions in a School as Social Capital: A Social Network Approach

Abstract: Background/Context: Researchers have proposed a number of lenses for analyzing teacher professional communities in recent years. These lenses have been useful in describing key dynamics of professional communities; however, none provides a compelling approach to how to integrate data from the school as a whole with case study data on individual interactions to create a coherent account of the structure and dynamics of teacher professional communities. Objective: Our objective was to present and illustrate the application of social capital theory for analyzing the role of formal and informal teacher interactions in helping teachers enact changes to instruction associated with ambitious school reforms. Social capital theory posits that valued resources and expertise are embedded within social networks and that it is through social ties that one gains access to and can make use of resources to effect change. The network perspective directs researchers to focus simultaneously on the overall social structure of a school and on the expertise and resources exchanged through interactions among teachers that

Readings in computer vision: issues, problems, principles, and paradigms

Abstract: Each chapter of the book addresses a problem, provides a survey of major issues, ideas, and research projects, and presents reprints of key papers. In total, the book presents sixty research papers, most written since 1980.

The DARPA 1000-word resource management database for continuous speech recognition

Abstract: A database of continuous read speech has been designed and recorded within the DARPA strategic computing speech recognition program The data is intended for use in designing and evaluating algorithms for speaker-independent, speaker-adaptive and speaker-dependent speech recognition The data consists of read sentences appropriate to a naval resource management task built around existing interactive database and graphics programs The 1000-word task vocabulary is intended to be logically complete and habitable The database, which represents over 21000 recorded utterances from 160 talkers with a variety of dialects, includes a partition of sentences and talkers for training and for testing purposes >

The MetaCyc Database

Abstract: MetaCyc is a metabolic-pathway database that describes 445 pathways and 1115 enzymes occurring in 158 organisms. MetaCyc is a review-level database in that a given entry in MetaCyc often integrates information from multiple literature sources. The pathways in MetaCyc were determined experimentally, and are labeled with the species in which they are known to occur based on literature references examined to date. MetaCyc contains extensive commentary and literature citations. Applications of MetaCyc include pathway analysis of genomes, metabolic engineering and biochemistry education. MetaCyc is queried using the Pathway Tools graphical user interface, which provides a wide variety of query operations and visualization tools. MetaCyc is available via the World Wide Web at http://ecocyc.org/ecocyc/metacyc.html, and is available for local installation as a binary program for the PC and the Sun workstation, and as a set of flatfiles. Contact metacyc-info@ai.sri.com for information on obtaining a local copy of MetaCyc.

Students Becoming Chemists: Developing Representationl Competence

Abstract: This chapter examines the role that representations and visualizations can play in the chemical curriculum. Two types of curricular goals are examined: students’ acquisition of important chemical concepts and principles and students’ participation in the investigative practices of chemistry—“students becoming chemists.” Literature in learning theory and research support these two goals and this literature is reviewed. The first goal relates to cognitive theory and the way that representations and visualizations can support student understanding of concepts related to molecular entities and processes that are not otherwise available for direct perception. The second goal relates to situative theory and the role that representations and visualizations play in development of representational competence and the social and physical processes of collaboratively constructing an understanding of chemical processes in the laboratory. We analyze research on computer-based molecular modeling, simulations, and animations from these two perspectives and make recommendations for instruction and future research.