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1

Calibrated Peer Review: A New Tool for Integrating Information Literacy Skills in Writing-Intensive Large Classroom Settings  

ERIC Educational Resources Information Center

|Calibrated Peer Review[TM] (CPR) is a program that can significantly enhance the ability to integrate intensive information literacy exercises into large classroom settings. CPR is founded on a solid pedagogic base for learning, and it is formulated in such a way that information skills can easily be inserted. However, there is no mention of its…

Fosmire, Michael

2010-01-01

2

Interactive Engagement of Students in Large Class Settings using an Electronic Classroom Communication Response System  

Microsoft Academic Search

The growth in career interests in the built environment and recent changes to the structure and curriculum at Anglia Ruskin University has resulted in increased numbers of students studying the core subjects of building technology and services. Large lecture sizes create difficulties in engaging all students in the learning process, with particular problems of maintaining student attention, promoting discussion and

Ian Frame; Amanda Hayler

3

Active Learning in a Large Medical Classroom Setting for Teaching Renal Physiology  

ERIC Educational Resources Information Center

|In this article, the authors describe an active learning exercise which has been used to replace some lecture hours in the renal portion of an integrated, organ system-based curriculum for first-year medical students. The exercise takes place in a large auditorium with ~150 students. The authors, who are faculty members, lead the discussions,…

Dietz, John R.; Stevenson, Frazier T.

2011-01-01

4

Classroom Management in Inclusive Settings  

ERIC Educational Resources Information Center

The inclusion of children with disabilities in general education classes provides an opportunity for teachers to identify classroom management policies and practices that promote diversity and community. Community-building management strategies that facilitate friendships, collaboration, parent involvement, and address challenging behaviors in a…

Soodak, Leslie C.

2003-01-01

5

Improvement in Generic Problem-Solving Abilities of Students by Use of Tutor-Less Problem-Based Learning in a Large Classroom Setting  

ERIC Educational Resources Information Center

|Problem-based learning (PBL) was originally introduced in medical education programs as a form of small-group learning, but its use has now spread to large undergraduate classrooms in various other disciplines. Introduction of new teaching techniques, including PBL-based methods, needs to be justified by demonstrating the benefits of such…

Klegeris, Andis; Bahniwal, Manpreet; Hurren, Heather

2013-01-01

6

Classroom Management: Setting Up the Classroom for Learning  

ERIC Educational Resources Information Center

|Student learning is directly related to classroom control established the first week of school (Wong and Wong 2001)--what you do the first day counts, and what you do the first 10 minutes counts even more. This article shares the advanced planning aspects of classroom management that should be in place before students enter the classroom for the…

Sterling, Donna R.

2009-01-01

7

“Did Ronald McDonald Also Tend To Scare You As A Child?”: Working to Emplace Consumption, Commodities and Citizen-Students in a Large Classroom Setting  

Microsoft Academic Search

So-called ‘radical’ and ‘critical’ pedagogy seems to be everywhere these days on the landscapes of geographical teaching praxis and theory. Part of the remit of radical\\/critical pedagogy involves a de-centring of the traditional ‘banking’ method of pedagogical praxis. Yet, how do we challenge this ‘banking’ model of knowledge transmission in both a large-class setting and around the topic of commodity

Michael K. Goodman

2008-01-01

8

Collaboration within Large Groups in the Classroom  

ERIC Educational Resources Information Center

|The purpose of this paper is to show how a large group of students can work collaboratively in a synchronous way within the classroom using the cheapest possible technological support. Making use of the features of Single Display Groupware and of Multiple Mice we propose a computer-supported collaborative learning approach for big groups within…

Szewkis, Eyal; Nussbaum, Miguel; Rosen, Tal; Abalos, Jose; Denardin, Fernanda; Caballero, Daniela; Tagle, Arturo; Alcoholado, Cristian

2011-01-01

9

Classroom Management: Setting Up the Classroom for Learning  

NSDL National Science Digital Library

Student learning is directly related to classroom control established the first week of school (Wong and Wong 2001)--what you do the first day counts, and what you do the first 10 minutes counts even more. This article shares the advanced planning aspects

Sterling, Donna R.

2009-07-01

10

Student Performance in Three Classroom Settings  

Microsoft Academic Search

This study evaluated the effectiveness of interactive television in teaching an MSW foundation research methods course. Specifically, the performance of distant students who received instruction via interactive television was compared with the performance of their peers who received simultaneous face-to-face instruction in an interactive television classroom on-campus and with students who took the course in a traditional classroom. This retrospective

Helen E. Petracchi; Michael A. Patchner

2001-01-01

11

Tangential Floor in a Classroom Setting  

ERIC Educational Resources Information Center

|This article examines floor management in two classroom sessions: a task-oriented computer lesson and a literature lesson. Recordings made in the computer lesson show the organization of floor when a task is given to students. Temporary or "incipient" side floors (Jones and Thornborrow, 2004) emerge beside the main floor. In the literature…

Marti, Leyla

2012-01-01

12

Tangential Floor in a Classroom Setting  

ERIC Educational Resources Information Center

This article examines floor management in two classroom sessions: a task-oriented computer lesson and a literature lesson. Recordings made in the computer lesson show the organization of floor when a task is given to students. Temporary or "incipient" side floors (Jones and Thornborrow, 2004) emerge beside the main floor. In the literature lesson,…

Marti, Leyla

2012-01-01

13

Adolescent Substance Use Prevention Interventions Outside of Classroom Settings  

Microsoft Academic Search

Substance use prevention programs empowering individual adolescents to resist substance use through education and skills training\\u000a are crucial to reducing substance use within this population. However, existing programs of this type are designed primarily\\u000a for classroom use, and may not meet the needs of social workers intervening with adolescents outside classroom settings. A\\u000a literature review identified six programs that have

Natalie L. Hill

2008-01-01

14

Observation Instrument of Play Behaviour in a Classroom Setting  

ERIC Educational Resources Information Center

|The objective of this study was to develop an instrument to observe the play behaviour of a whole group of children from four to six years of age in a classroom setting on the basis of video recording. The instrument was developed in collaboration with experienced teachers and experts on play. Categories of play were derived from the literature…

Berkhout, Louise; Hoekman, Joop; Goorhuis-Brouwer, Sieneke M.

2012-01-01

15

Social Studies Instruction in a Non-Classroom Setting.  

ERIC Educational Resources Information Center

Certain areas in the social studies can be effectively taught in a non-classroom setting. This experiment determined if, in a supermarket situation, consumer preferences (as measured in sales figures and augmented by questionnaire data) could be altered by the addition of nutritional information to the labels of sixteen items which had moderate…

Murphy, Margaret M.

16

Effective management of cultural diversity in a classroom setting  

Microsoft Academic Search

Cultural diversity has become a major issue in the United States. Issues of cultural diversity are more focused, especially in the classroom setting. There are several techniques that may be applied to teaching to accommodate students of diverse backgrounds. Teachers must first be aware of stereo types, ethnocentrism, and prejudice. They should apply management techniques to the physical space as

Dominick L. Sturz; Brian H. Kleiner; Aja Fernandez

2005-01-01

17

Identifying learning preferences in vocational education and training classroom settings  

Microsoft Academic Search

This research was designed to assess whether teachers and trainers of vocational learners noted and valued differences in individual learning preferences and, if so, how those differences were observed in natural classroom, workshop or other formal learning settings. Data were collected from six vocational education and training (VET) learning sites and included a quantitative questionnaire component and an interview component.

Peter J. Smith

2006-01-01

18

A Student Response System in an Electronic Classroom: Technology Aids for Large Classroom Instruction  

NASA Astrophysics Data System (ADS)

In the fall of 1996, thirteen (13) classrooms on the Ball State campus were equipped with technological aids to enhance learning in large classrooms (for typically 100 students or larger). Each classroom was equipped with the following built-in equipment: computer, zip drive, laser disc player, VCR, LAN and Internet connection, TV monitors, and Elmo overhead camera with large-screen projection system. This past fall semester a student response system was added to a 108-seat classroom in the Physics and Astronomy department for use with large General Education courses. Each student seat was equipped with a hardwired hand-held unit possessing input capabilities and LCD feedback for the student. The introduction of the student response system was added in order enhance more active learning by students in the large classroom environment. Attendance, quizzes, hour exams, and in-class surveys are early uses for the system; initial reactions by student and faculty users will be given.

Ober, D.; Errington, P.; Islam, S.; Robertson, T.; Watson, J.

1997-10-01

19

Creativity in the classroom: An examination of student teacher personality and perceptions of the classroom setting  

Microsoft Academic Search

Separate bodies of research exist concerning the personality of creative individuals, characteristics of effective teachers and student teachers, and the significance of the classroom environment. However, relatively little attention has been directed toward specifying the nature of the relationships between these sets of variables. The present study attempts to broaden the work already done in these areas by examining how

Ilene Weinerman

1997-01-01

20

Observations of Children's Interactions with Teachers, Peers, and Tasks across Preschool Classroom Activity Settings  

Microsoft Academic Search

Research Findings: This descriptive study examined classroom activity settings in relation to children's observed behavior during classroom interactions, child gender, and basic teacher behavior within the preschool classroom. A total of 145 children were observed for an average of 80 min during 8 occasions across 2 days using the Individualized Classroom Assessment Scoring System, an observational measure that conceptualizes behavior into

Leslie M. Booren; Jason T. Downer; Virginia E. Vitiello

2012-01-01

21

Using problem-based learning in a large classroom.  

PubMed

Although PBL (problem-based learning) has gained increasing acceptance as an alternative to teacher-centered methods in nursing education, there are challenges to implementing this method in conventional course-based curriculums due to lack of additional faculty tutors to facilitate and monitor small group process. Little is known in nursing education regarding the effectiveness of teaching PBL in large group settings. [Woods, D. 1996. Problem-based Learning for Large Classes in Chemical Engineering. In: Wilkerson, L., Gijsaers, W. (Eds.), Bringing Problem-based Learning to Higher Education: Theory And Practice. Jossey-Bass, San Francisco, pp. 91-99] suggests that there are significant challenges related to student acceptance of the method, monitoring small group process and evaluating the quality of students' work. This paper will provide a description of the process and outcome of using PBL in a second year Baccalaureate nursing course using both classroom and on-line learning technology. Findings from a student survey will be included to highlight the strengths and challenges of using PBL in a large group setting with one faculty tutor. Implications for using PBL in this format will be provided. PMID:19040887

Pastirik, Pamela J

2006-05-04

22

"Clicker" Cases: Introducing Case Study Teaching Into Large Classrooms  

NSDL National Science Digital Library

Case study teaching is difficult in large classes, especially in fixed-seat ampitheaters. The development of audience response systems, or "clickers," for use in classrooms has opened up exciting new possibilities for creating and implementing interactive case studies, particularly in large introductory science courses.

Freeman-Herreid, Clyde

2006-10-01

23

Teacher and Student Research Using Large Data Sets  

NASA Astrophysics Data System (ADS)

One of the objectives of teacher research experiences is to immerse the teacher in an authentic research situation to help the teacher understand what real research is all about: "to do science as scientists do." Experiences include doing experiments in laboratories, gathering data out in the field, and observing at professional observatories. However, a rapidly growing area of scientific research is in "data mining" increasingly large public data archives. In the earth and space sciences, such large archives are built around data from Landsat 7, the Sloan Digital Sky Survey, and in about seven years, the Large Synoptic Survey Telescope. The LSST will re-photograph the entire night sky every three day, resulting in a data flow of about 20 terabytes per night. The resulting LSST archive will represent a huge challenge of simple storage and retrieval for professional scientists. It will be a much greater challenge to help K-12 teachers use such gargantuan files and collections of data effectively in the classroom and to understand and begin to practice the new research procedures involved in data mining. At NOAO we are exploring ways of using large data sets in formal educational settings like classrooms, and public settings like planetariums and museums. In our existing professional development programs, such as our Teacher leaders in Research Based Science Education, we have introduced teachers to research via on-site observing experiences and partnerships with active astronomers. To successfully initiate research in the classroom, we have found that teachers need training in specific science content, use of specialized software to work with the data, development of research questions and objectives, and explicit pedagogical strategies for classroom use. Our research projects are well defined, though not "canned," and incorporate specific types of data, such as solar images. These data can be replaced with new data from an archive for the classroom research experience. This is already a form of data mining that can be applied to large data sets. We are looking at ways to apply our experience with hands-on observation experiences to the relatively abstract world of data mining. We are also looking at ways to move beyond the well-defined application to training teachers to develop their own more open-ended research activities. NOAO is operated by the Association of Universities for Research in Astronomy (AURA), Inc., under cooperative agreement with the National Science Foundation.

Croft, S. K.; Pompea, S. M.; Sparks, R. T.

2005-12-01

24

Observations of Children's Interactions with Teachers, Peers, and Tasks across Preschool Classroom Activity Settings  

ERIC Educational Resources Information Center

|Research Findings: This descriptive study examined classroom activity settings in relation to children's observed behavior during classroom interactions, child gender, and basic teacher behavior within the preschool classroom. A total of 145 children were observed for an average of 80 min during 8 occasions across 2 days using the Individualized…

Booren, Leslie M.; Downer, Jason T.; Vitiello, Virginia E.

2012-01-01

25

Using News Articles to Build a Critical Literacy Classroom in an EFL Setting  

ERIC Educational Resources Information Center

This article examines an effort to support critical literacy in an English as a foreign language (EFL) setting by analyzing one college EFL reading classroom in which students read and responded to articles from "The New Yorker". Data include transcribed audiotapes of classroom interaction and interviews with students, classroom materials, and…

Park, Yujong

2011-01-01

26

Using News Articles to Build a Critical Literacy Classroom in an EFL Setting  

ERIC Educational Resources Information Center

|This article examines an effort to support critical literacy in an English as a foreign language (EFL) setting by analyzing one college EFL reading classroom in which students read and responded to articles from "The New Yorker". Data include transcribed audiotapes of classroom interaction and interviews with students, classroom materials, and…

Park, Yujong

2011-01-01

27

Classroom Activities as Settings for Cognitive Learning Opportunity and Instruction.  

ERIC Educational Resources Information Center

The nature of classroom activities, cognitive learning opportunities, and instruction in seventh and eighth grades within the academic subject areas was examined. The purpose was to describe and interpret classroom learning opportunities in terms compatible with the complexity of typical classroom events and teachers' understanding of those…

Korth, Willard; Cornbleth, Catherine

28

The Interactive Lecture: Teaching and Learning Technologies for Large Classrooms  

Microsoft Academic Search

Conventional lectures in large classrooms are connected to fundamental didactic problems due to a lack of interactivity and feedback opportunities. In an interactive lecture each student is equipped with a light-weight, mobile device that can be used to interact with the lecturer during the lesson, thus creating an additional channel of communication. These devices support new teaching and learning paradigms

Stephan Kopf; Nicolai Scheele; Wolfgang Effelsberg

29

Radial sets: interactive visual analysis of large overlapping sets.  

PubMed

In many applications, data tables contain multi-valued attributes that often store the memberships of the table entities to multiple sets such as which languages a person masters, which skills an applicant documents, or which features a product comes with. With a growing number of entities, the resulting element-set membership matrix becomes very rich of information about how these sets overlap. Many analysis tasks targeted at set-typed data are concerned with these overlaps as salient features of such data. This paper presents Radial Sets, a novel visual technique to analyze set memberships for a large number of elements. Our technique uses frequency-based representations to enable quickly finding and analyzing different kinds of overlaps between the sets, and relating these overlaps to other attributes of the table entities. Furthermore, it enables various interactions to select elements of interest, find out if they are over-represented in specific sets or overlaps, and if they exhibit a different distribution for a specific attribute compared to the rest of the elements. These interactions allow formulating highly-expressive visual queries on the elements in terms of their set memberships and attribute values. As we demonstrate via two usage scenarios, Radial Sets enable revealing and analyzing a multitude of overlapping patterns between large sets, beyond the limits of state-of-the-art techniques. PMID:24051816

Alsallakh, Bilal; Aigner, Wolfgang; Miksch, Silvia; Hauser, Helwig

2013-12-01

30

The Sign Language Skills Classroom Observation: A Process for Describing Sign Language Proficiency in Classroom Settings  

Microsoft Academic Search

In collaboration with teachers and students at the National Technical Institute for the Deaf (NTID), the Sign Language Skills Classroom Observation (SLSCO) was designed to provide feedback to teachers on their sign language communication skills in the classroom. In the present article, the impetus and rationale for development of the SLSCO is discussed. Previous studies related to classroom signing and

June B. Reeves; William Newell; Barbara Ray Holcomb; Michael Stinson

2000-01-01

31

Why Should We Care About Noise in Classrooms and Child Care Settings?  

Microsoft Academic Search

Increasing numbers of young children spend extended portions of their days in group care settings. However, little attention has been given to the acoustical properties of these settings and how these may affect development, particularly speech and language development. This article provides a review of how classroom acoustics are measured, what researchers have found, and why poor classroom acoustics are

Elizabeth E. Manlove; Tom Frank; Lynne Vernon-Feagans

2001-01-01

32

Data Editing on Large Data Sets.  

National Technical Information Service (NTIS)

The process of analyzing large data sets often includes an early exploratory stage to first, develop a basic understanding of the data and its interrelationships and second, to prepare and cleanup the data for hypothesis formulation and testing. This prel...

J. J. Thomas R. A. Burnett J. R. Lewis

1981-01-01

33

Treatment of Encopresis in a Classroom Setting: A Case Study  

ERIC Educational Resources Information Center

|This study describes the procedure and results of a behavior modification program carried out in the classroom and aimed at eliminating encopresis (involuntary defecation) in an 8-year-old boy. (Editor/RK)|

Scott, E.

1977-01-01

34

Indexing Large Trajectory Data Sets With SETI  

Microsoft Academic Search

With the rapid increase in the use of inexpensive, location-aware sensors in a variety of new appli- cations, large amounts of time-sequenced location data will soon be accumulated. Efficient indexing techniques for managing these large volumes of trajectory data sets are urgently needed. The key requirements for a good trajectory indexing tech- nique is that it must support both searches

V. Prasad Chakka; Adam Everspaugh; Jignesh M. Patel

2003-01-01

35

Supervised learning on large redundant training sets  

Microsoft Academic Search

A novel algorithm combining the good properties of offline and online algorithms is introduced. The efficiency of supervised learning algorithms on small-scale problems does not necessarily scale up to large-scale problems. The redundancy of large training sets is reflected as redundancy gradient vectors in the network. Accumulating these gradient vectors implies redundant computations. In order to avoid these redundant computations

M. Moller; Ny Munkegade

1992-01-01

36

Active learning in large class settings.  

PubMed

Science education is in the process of shifting from the mastery of a large body of factual information to an emphasis on the development of reasoning skills and the solving of practical problems. Such skills are best developed by instructors and students working together in an active learning environment as opposed to instructors and students being, respectively, sources and sinks of factual knowledge. Most models of active learning are geared toward small group (< 15 students) settings in which interactions between students and instructor are optimized. However, basic courses in physiology are often forced to meet in large classes in which it is more difficult to utilize active learning methods. The panelists in this workshop demonstrated techniques that they use in large class settings to promote an active learning experience. We hope that this summary of the workshop will encourage you to experiment with educational approaches to improve the efficacy of teaching in the large class setting. PMID:8554100

1995-12-01

37

Clickers in the large classroom: current research and best-practice tips.  

PubMed

Audience response systems (ARS) or clickers, as they are commonly called, offer a management tool for engaging students in the large classroom. Basic elements of the technology are discussed. These systems have been used in a variety of fields and at all levels of education. Typical goals of ARS questions are discussed, as well as methods of compensating for the reduction in lecture time that typically results from their use. Examples of ARS use occur throughout the literature and often detail positive attitudes from both students and instructors, although exceptions do exist. When used in classes, ARS clickers typically have either a benign or positive effect on student performance on exams, depending on the method and extent of their use, and create a more positive and active atmosphere in the large classroom. These systems are especially valuable as a means of introducing and monitoring peer learning methods in the large lecture classroom. So that the reader may use clickers effectively in his or her own classroom, a set of guidelines for writing good questions and a list of best-practice tips have been culled from the literature and experienced users. PMID:17339389

Caldwell, Jane E

2007-01-01

38

Improving preschool classroom processes: Preliminary findings from a randomized trial implemented in Head Start settings  

Microsoft Academic Search

A primary aim of the Chicago School Readiness Project was to improve teachers’ emotionally supportive classroom practices in Head Start-funded preschool settings. Using a clustered randomized controlled trial (RCT) design, the Chicago School Readiness Project randomly assigned a treatment versus control condition to 18 Head Start sites, which included 35 classrooms led by 94 teachers who served 602 children. Teachers

C. Cybele Raver; Stephanie M. Jones; Christine P. Li-Grining; Molly Metzger; Kina M. Champion; Latriese Sardin

2008-01-01

39

The Emergence of Student Creativity in Classroom Settings: A Case Study of Elementary Schools in Korea  

ERIC Educational Resources Information Center

|This research explores the emergence of student creativity in classroom settings, specifically within two content areas: science and social studies. Fourteen classrooms in three elementary schools in Korea were observed, and the teachers and students were interviewed. The three types of student creativity emerging in the teaching and learning…

Cho, Younsoon; Chung, Hye Young; Choi, Kyoulee; Seo, Choyoung; Baek, Eunjoo

2013-01-01

40

Visual exploration of large data sets  

Microsoft Academic Search

DEVise is a data visualization and exploration system capable of handling large data sets using off-the-shelf hardware with minimal memory requirements. Data can be large in volume, complex in structure (multi-dimensional and\\/or hierarchical), and may be imported from different sources such as database servers, external programs, and World Wide Web resources. Commercial and scientific databases can also be linked to

Miron Livny; Raghu Ramakrishnan; Jussi Myllymaki

1996-01-01

41

Thinking Routines: Replicating Classroom Practices within Museum Settings  

ERIC Educational Resources Information Center

|This article describes thinking routines as tools to guide and support young children's thinking. These learning strategies, developed by Harvard University's Project Zero Classroom, actively engage students in constructing meaning while also understanding their own thinking process. The authors discuss how thinking routines can be used in both…

Wolberg, Rochelle Ibanez; Goff, Allison

2012-01-01

42

Thinking Routines: Replicating Classroom Practices within Museum Settings  

ERIC Educational Resources Information Center

This article describes thinking routines as tools to guide and support young children's thinking. These learning strategies, developed by Harvard University's Project Zero Classroom, actively engage students in constructing meaning while also understanding their own thinking process. The authors discuss how thinking routines can be used in both…

Wolberg, Rochelle Ibanez; Goff, Allison

2012-01-01

43

Finding Groups in Large Data Sets  

Microsoft Academic Search

This paper aims to give an overview of methods to find groups in large data sets, such as household expenditure survey data. These methods are grouped in three: cluster analysis, dimension reduction and basic explorative methods. The emphasis is put on a critical analysis and potential drawbacks, especially of inputs that have to be provided by the researcher. These may

Adrian Müller

2002-01-01

44

Multiview Registration for Large Data Sets  

Microsoft Academic Search

In this paper we present a multiview registration method for aligning range data. We first align scans pairwise with each other and use the pairwise alignments as constraints that the multiview step enforces while evenly diffusing the pairwise registration errors. This approach is especially suitable for registering large data sets, since using con- straints from pairwise alignments does not require

Kari Pulli

1999-01-01

45

Reliability of the 5-min psychomotor vigilance task in a primary school classroom setting.  

PubMed

This study evaluated the reliability of the 5-min psychomotor vigilance task (PVT) in a single-sex Australian primary school. Seventy-five male students (mean age = 11.82 years, SD = 1.12) completed two 5-min PVTs using a Palm personal digital assistant (PDA) in (1) an isolated setting and (2) a classroom setting. Of this group of students, a subsample of 37 students completed a test-retest reliability trial within the classroom setting. Using a mixed-model analysis, there was no significant difference in the mean response time (RT) or number of lapses (RTs >or= 500 msec) between the isolated and the classroom setting. There was, however, an order effect for the number of lapses in the isolated setting, with the number of lapses being greater if the isolated test was conducted second. Test-retest intraclass correlation coefficients (ICCs) in the classroom setting indicated moderate to high reliability (mean RT = .84, lapses = .59). Bland-Altman analysis showed no systematic difference between the two settings. Findings suggest that the 5-min PDA PVT is a reliable measure of sustained attention in the classroom setting in this sample of primary-aged schoolchildren. The results provide further evidence for the versatility of this measuring device for larger interventions outside the laboratory. PMID:20805597

Wilson, Andrew; Dollman, James; Lushington, Kurt; Olds, Timothy

2010-08-01

46

Classroom Climate in Regular Primary School Settings with Children with Special Needs  

ERIC Educational Resources Information Center

This study investigates the classroom climate in two settings of the 6th-grade class (a setting of children with special needs and a setting without children with special needs), focusing on aspects of satisfaction and cohesiveness on one side and friction, competitiveness and difficulties on the other. The study results indicate the existence of…

Schmidt, Majda; Cagran, Branka

2006-01-01

47

Spatial occupancy models for large data sets  

USGS Publications Warehouse

Since its development, occupancy modeling has become a popular and useful tool for ecologists wishing to learn about the dynamics of species occurrence over time and space. Such models require presence–absence data to be collected at spatially indexed survey units. However, only recently have researchers recognized the need to correct for spatially induced overdisperison by explicitly accounting for spatial autocorrelation in occupancy probability. Previous efforts to incorporate such autocorrelation have largely focused on logit-normal formulations for occupancy, with spatial autocorrelation induced by a random effect within a hierarchical modeling framework. Although useful, computational time generally limits such an approach to relatively small data sets, and there are often problems with algorithm instability, yielding unsatisfactory results. Further, recent research has revealed a hidden form of multicollinearity in such applications, which may lead to parameter bias if not explicitly addressed. Combining several techniques, we present a unifying hierarchical spatial occupancy model specification that is particularly effective over large spatial extents. This approach employs a probit mixture framework for occupancy and can easily accommodate a reduced-dimensional spatial process to resolve issues with multicollinearity and spatial confounding while improving algorithm convergence. Using open-source software, we demonstrate this new model specification using a case study involving occupancy of caribou (Rangifer tarandus) over a set of 1080 survey units spanning a large contiguous region (108?000 km2) in northern Ontario, Canada. Overall, the combination of a more efficient specification and open-source software allows for a facile and stable implementation of spatial occupancy models for large data sets.

Johnson, Devin S.; Conn, Paul B.; Hooten, Mevin B.; Ray, Justina C.; Pond, Bruce A.

2013-01-01

48

Visual exploration of large data sets  

NASA Astrophysics Data System (ADS)

DEVise is a data visualization and exploration system capable of handling large data sets using off-the-shelf hardware with minimal memory requirements. Data can be large in volume, complex in structure (multi-dimensional and/or hierarchical), and may be imported from different sources such as database servers, external programs, and World Wide Web resources. Commercial and scientific databases can also be linked to the DEVise to allow the user to visualize and analyze related information from heterogeneous sources. Associations between data sources are developed interactively as the user gains more knowledge of the data being explored. To assist in handling large data sets, DEVise allows a user to logically split the data into more manageable units at different levels. The user selects a data source, a data stream within a data source (e.g. a time series), attributes of a stream, and a mapping of attributes to graphical objects. At each step, the selections made by the user reduce the data volume. DEVise takes advantage of this form of 'data compression' to optimize its caching strategies and to minimize the accesses needed to fetch data from tertiary storage, for example. DEVise supports users with different expertise levels by automating most tasks performed by a novice user and by also providing a programming interface that allows new data sources to be defined, new graphical objects to be used, and custom storage policies to be employed.

Livny, Miron; Ramakrishnan, Raghu; Myllymaki, Jussi

1996-04-01

49

Explaining and Predicting Outcomes of Large Classrooms Using Audience Response Systems  

Microsoft Academic Search

Audience Response Systems (ARS) are a technologies that show promise in helping large groups or classrooms be more effective. We explore the phenomenon of large-group process interactivity in interpersonal computer-mediated communication in the specific case of large classrooms. We develop a general theoretical model of interactive media and then extend it to ARS and develop testable hypotheses regarding how interactivity

Paul Benjamin Lowry; Randy Guthrie

2006-01-01

50

Activity Settings and Daily Routines in Preschool Classrooms: Diverse Experiences in Early Learning Settings for Low-Income Children  

ERIC Educational Resources Information Center

|This paper examines activity settings and daily classroom routines experienced by 3- and 4-year-old low-income children in public center-based preschool programs, private center-based programs, and family child care homes. Two daily routine profiles were identified using a time-sampling coding procedure: a High Free-Choice pattern in which…

Fuligni, Allison Sidle; Howes, Carollee; Huang, Yiching; Hong, Sandra Soliday; Lara-Cinisomo, Sandraluz

2012-01-01

51

The Print Environment in Kindergartens: A Study of Conventional and Holistic Teachers and Their Classrooms in Three Settings.  

ERIC Educational Resources Information Center

Assesses physical print environment of 18 kindergarten classrooms, addressing whether literacy was honored with materials and special places for reading/writing. Finds suburban and holistic classrooms had more writing tools and print than urban, rural, and conventional settings. Concludes print-poor classrooms do not honor literacy, and…

Beagle, Kimberly Geiger; Dowhower, Sarah L.

1998-01-01

52

Technological Challenges: Designing Large Compressed Video and Multimedia Classrooms.  

ERIC Educational Resources Information Center

|Designing a distance learning classroom requires integration of educational goals and philosophy with technology and ergonomics. The technological challenge and key to designing effective distance learning and multimedia classrooms is creating an environment in which the participants--students, and teacher--may easily interact with instructional…

Hart, Russ A.; Parker, Roger

53

Pupil Occupancy Time in Classroom Settings across Cultures.  

ERIC Educational Resources Information Center

|Reports on study conducted to do the following: 1) explore the theoretical relationship between the concept of culture and that of behavior settings; and 2) demonstrate the applicability of ecological methods to the study of behavior cross-culturally. (MW)|

Scott, M. M.

1989-01-01

54

The Transition of Women from the Classroom Setting to the Educational Administration Setting  

ERIC Educational Resources Information Center

|This qualitative case study examined the research exploring how female teachers had perceived their potential challenges in becoming a principal, and how those perceptions actually changed as they made the move from the classroom to the principal's office. The purpose of the study is to investigate how female administrative candidates assessed…

Zachreson, Sarah A.

2011-01-01

55

Descriptive Analysis of Classroom Setting Events on the Social Behaviors of Children with Autism Spectrum Disorder  

ERIC Educational Resources Information Center

|Children with Autism Spectrum Disorder (ASD) are characterized by extreme deficits in social relatedness with same-age peers. The purpose of this descriptive study was to identify naturally occurring antecedent variables (i.e., setting events) in the classroom environments of children with ASD that promoted their engagement in peer-related social…

Boyd, Brian A.; Conroy, Maureen A.; Asmus, Jennifer M.; McKenney, Elizabeth L. W.; Mancil, G. Richmond

2008-01-01

56

Using video?stimulated recall to understand young children's perceptions of learning in classroom settings  

Microsoft Academic Search

This article arose from a project based on exploring the nature and value of interactive teaching with and without information and communications technology (ICT). It describes one facet of the project which involves developing an understanding of children's perceptions of learning in classroom settings. This was explored through interviews with pupils aged between 3 and 7 years. These interviews utilised

Alex Morgan

2007-01-01

57

Conceptualizing the Classroom of Target Students: A Qualitative Investigation of Panelists' Experiences during Standard Setting  

ERIC Educational Resources Information Center

Increasingly, research has focused on the cognitive processes associated with various standard-setting activities. This qualitative study involved an examination of 16 third-grade reading teachers' experiences with the cognitive task of conceptualizing an entire classroom of hypothetical target students when the single-passage bookmark method or…

Hein, Serge F.; Skaggs, Gary

2010-01-01

58

The Effects of Territorial Depiction and Disruption on Group Cohesion in a Classroom Setting.  

ERIC Educational Resources Information Center

|A study was devised to examine a subject's level of interpersonal territoriality and disruption of territoriality in small group classroom setting. Through an elaborate procedure, subjects were classified as having rigid or loose depictions of territoriality, and were assigned to small groups with each group having at least two rigid and two…

Randall, Daniel W.; And Others

59

Comparing Asynchronous Online Discussions and Face-to-Face Discussions in a Classroom Setting  

ERIC Educational Resources Information Center

|The purpose of this study is to investigate the perceived differences between asynchronous online discussions and face-to-face discussions in a classroom setting. The students' reflections were analysed by following a qualitative research approach. The results showed that atmosphere, response, efficiency, interactivity and communication were the…

Wang, Qiyun; Woo, Huay Lit

2007-01-01

60

Testing improves long-term retention in a simulated classroom setting  

Microsoft Academic Search

The benefits of testing on long-term retention of lecture material were examined in a simulated classroom setting. Participants viewed a series of three lectures on consecutive days and engaged in a different type of postlecture activity on each day: studying a lecture summary, taking a multiple choice test, or taking a short answer test. Feedback (correct answers) was provided for

Andrew C. Butler; Henry L. Roediger III

2007-01-01

61

Developing a Positive Mind-Set toward the Use of Technology for Classroom Instruction  

ERIC Educational Resources Information Center

|The aim of this paper is to examine various indicators associated with the development of a positive mind-set toward the use of technology for instruction. The paper also examines the resources available to help teachers keep pace with technological innovation. Electronic classrooms have some complexities associated with them; therefore, support…

Okojie, Mabel C. P. O.; Olinzock, Anthony

2006-01-01

62

A Collaborative Model for Developing Classroom Management Skills in Urban Professional Development School Settings  

ERIC Educational Resources Information Center

|This article describes a school-university partnership that focuses on the development of classroom management skills for preservice teachers in an urban setting, through collaboration between mentors, principals, and a university supervisor. To prepare preservice teachers for the unique challenges of urban schools, three key elements were…

Dobler, Elizabeth; Kesner, Cathy; Kramer, Rebecca; Resnik, Marilyn; Devin, Libby

2009-01-01

63

Reliability Issues and Solutions for Coding Social Communication Performance in Classroom Settings  

ERIC Educational Resources Information Center

|Purpose: To explore the utility of time-interval analysis for documenting the reliability of coding social communication performance of children in classroom settings. Of particular interest was finding a method for determining whether independent observers could reliably judge both occurrence and duration of ongoing behavioral dimensions for…

Olswang, Lesley B.; Svensson, Liselotte; Coggins, Truman E.; Beilinson, Jill S.; Donaldson, Amy L.

2006-01-01

64

A Comparison of the Verbal Praise-Criticism Behavior of Teachers Instructing in Junior High Regular Classrooms with a Small Class-Size, Regular Classrooms with a Large Class-Size, Special Classrooms and Tutoring Classrooms.  

ERIC Educational Resources Information Center

|A comparison was made of the verbal praise and criticism behaviors of teachers instructing in different types of classrooms. Fifty-seven teachers were observed in their various seventh and eighth grade classrooms: (1) nonhandicapped, small class size (5-15 students); (2) nonhandicapped, large class size (20 or more students); (3) special…

Crabtree, Vaun C.

65

Using Embedded Interactive Feedback Devices to Change the Classroom Dynamic in a Large Lecture Hall  

Microsoft Academic Search

By embedding interactive feedback devices for both the student and the instructor within the online course, we hope to change the classroom dynamic of the large lecture classroom for freshman Modern Biology from one of unprepared students listening passively to the instructor's lecture; to one where the students are prepared and the instructor's \\

William E. Brown; Marie Bajzek; James M. Burnette

66

Consistency of Learning Styles of Undergraduate Athletic Training Students in the Traditional Classroom versus the Clinical Setting.  

ERIC Educational Resources Information Center

|Examined the learning styles of undergraduate athletic trainers to determine their consistency in traditional classroom versus clinical settings. Students completed the Learning Styles Inventory twice, once focusing on learning new information in the classroom and once focusing on learning in the clinical setting. Learning styles shifted…

Coker, Cheryl A.

2000-01-01

67

Use of big-screen films in multiple childbirth education classroom settings.  

PubMed

Although two recent films, Orgasmic Birth and Pregnant in America, were intended for the big screen, they can also serve as valuable teaching resources in multiple childbirth education settings. Each film conveys powerful messages about birth and today's birthing culture. Depending on a childbirth educator's classroom setting (hospital, birthing center, or home birth environment), particular portions in each film, along with extra clips featured on the films' DVDs, can enhance an educator's curriculum and spark compelling discussions with class participants. PMID:21358831

Kaufman, Tamara

2010-01-01

68

Use of Big-Screen Films in Multiple Childbirth Education Classroom Settings  

PubMed Central

Although two recent films, Orgasmic Birth and Pregnant in America, were intended for the big screen, they can also serve as valuable teaching resources in multiple childbirth education settings. Each film conveys powerful messages about birth and today's birthing culture. Depending on a childbirth educator's classroom setting (hospital, birthing center, or home birth environment), particular portions in each film, along with extra clips featured on the films' DVDs, can enhance an educator's curriculum and spark compelling discussions with class participants.

Kaufman, Tamara

2010-01-01

69

Coaching as a Key Component in Teachers' Professional Development: Improving Classroom Practices in Head Start Settings.  

National Technical Information Service (NTIS)

Head Start CARES (Classroom-based Approaches and Resources for Emotion and Social Skill Promotion) is a large-scale, national research demonstration that was designed to test the effects of a one-year program aimed at improving pre-kindergarteners social ...

C. M. Lloyd E. L. Modlin

2012-01-01

70

Teaching Nursing Research Using Large Data Sets.  

ERIC Educational Resources Information Center

Describes a process for teaching nursing research via secondary analysis of data sets from the National Center for Health Statistics. Addresses advantages, potential problems and limitations, guidelines for students, and evaluation methods. (Contains 32 references.) (SK)

Brosnan, Christine A.; Eriksen, Lillian R.; Lin, Yu-Feng

2002-01-01

71

Teaching Nursing Research Using Large Data Sets.  

ERIC Educational Resources Information Center

|Describes a process for teaching nursing research via secondary analysis of data sets from the National Center for Health Statistics. Addresses advantages, potential problems and limitations, guidelines for students, and evaluation methods. (Contains 32 references.) (SK)|

Brosnan, Christine A.; Eriksen, Lillian R.; Lin, Yu-Feng

2002-01-01

72

[The BASYS observation system for the analysis of aggressive behavior in classroom-settings].  

PubMed

Educational or therapeutic measures of aggressive student behavior are often based on the judgments of teachers. However, empirical studies show that the objectivity of these judgments is generally low. In order to assess aggressive behavior in classroom settings, we developed a context-sensitive observational system. The observation system exists in a version for teachers in action as well as a version for the uninvolved observer. The teacher version allows categorizing aggressive behavior while teaching. The aim is to differentiate the perception and the judgments of teachers, so that the judgments can serve as trustable diagnostic information. The version for an independent observer, in addition, contains categories to collect information about the context in which aggressions take place. The behavior observation system was tested in four field-studies in regular and special classes. The empirical results show that, after training, teachers were able to make objective observations, and that aggressive behavior depends to a large extent on situational factors. The system allows identification of problematic people-environment relationships and the derivation of intervention measures. PMID:22748725

Wettstein, Alexander

2012-01-01

73

Knowledge Discovery in Large Data Sets  

NASA Astrophysics Data System (ADS)

In this work we briefly address the problem of unsupervised classification on large datasets, magnitude around 100,000,000 objects. The objects are variable objects, which are around 10% of the 1,000,000,000 astronomical objects that will be collected by GAIA/ESA mission. We tested unsupervised classification algorithms on known datasets such as OGLE and Hipparcos catalogs. Moreover, we are building several templates to represent the main classes of variable objects as well as new classes to build a synthetic dataset of this dimension. In the future we will run the GAIA satellite scanning law on these templates to obtain a testable large dataset.

Simas, Tiago; Silva, Gabriel; Miranda, Bruno; Moitinho, Andre; Ribeiro, Rita

2008-12-01

74

MCDM for a Large Set of Criteria.  

National Technical Information Service (NTIS)

We present a method for multi-criteria decision analysis (MCDA) capable of dealing with a large number of criteria. The issue with the most common methods for MCDA is that the number of pairwise comparisons grows quickly with the number of criteria. We ha...

E. Hoff H. L. Huru

2009-01-01

75

Stability of situational non-compliance in ADHD children in two school classroom settings  

Microsoft Academic Search

In an elementary school behavior modification program in a child development center, an observational study was conducted of 27 Attention-Deficit\\/Hyperactive children's non-compliant behavior in two school classroom settings during a 1-month period. Non-compliant behavior was recorded when children failed to follow a teacher's direction or correction. Both the daily frequencies of teachers' directions\\/corrections that created opportunities for non-compliance (p <

R. J. Beck; R. A. Kotkin; J. M. Swanson; F. Miller

1999-01-01

76

Treatment of psychotic children in a classroom environment: I. Learning in a large group1  

PubMed Central

The purpose of this study was to investigate systematically the feasibility of modifying the behavior of autistic children in a classroom environment. In the first experiment, eight autistic children were taught certain basic classroom behaviors (including attending to the teacher upon command, imitation, and an elementary speaking and recognition vocabulary) that were assumed to be necessary for subsequent learning to take place in the classroom. Based on research documenting the effectiveness of one-to-one (teacher-child ratio) procedures for modifying such behaviors, these behaviors were taught in one-to-one sessions. It was, however, found that behaviors taught in a one-to-one setting were not performed consistently in a classroom-sized group, or even in a group as small as two children with one teacher. Further, the children evidenced no acquisition of new behaviors in a classroom environment over a four-week period. Therefore, Experiment II introduced a treatment procedure based upon “fading in” the classroom stimulus situation from the one-to-one stimulus situation. Such treatment was highly effective in producing both a transfer in stimulus control and the acquisition of new behaviors in a kindergarten/first-grade classroom environment.

Koegel, Robert L.; Rincover, Arnold

1974-01-01

77

Increasing Interactivity in Large Blended Classrooms through a Cutting-Edge Mobile Learning System  

Microsoft Academic Search

Large classrooms, whether on school grounds or online, have long suffered from a lack of interactivity. Many online classes simply provide recorded instructor lectures, which only reinforces the negative effects of passive non-participatory learning. The E-Learning Lab of Shanghai Jiaotong University developed a cutting-edge mobile learning system that can deliver live broadcasts of real-time classroom teaching or training to learners

M. J. Wang; R. M. Shen

2008-01-01

78

Using Large Shared Displays to Create a Collaborative Classroom Learning Environment  

Microsoft Academic Search

Our goal in this work is to create a more collaborative learning environment in the classroom, by designing and implementing a system infrastructure to support easy use and management of a large shared (tiled) display. Through this shared display space, instructor and student interaction is facilitated. This large display space provides the primary means of presentation of lecture material, allowing

Patrick E. Mantey; Jeremy Richards

79

Reliability and Validity of Information about Student Achievement: Comparing Large-Scale and Classroom Testing Contexts  

ERIC Educational Resources Information Center

Reliability and validity are two characteristics that must be considered whenever information about student achievement is collected. However, those characteristics--and the methods for evaluating them--differ in large-scale testing and classroom testing contexts. This article presents the distinctions between reliability and validity in the two…

Cizek, Gregory J.

2009-01-01

80

Clickers in the Large Classroom: Current Research and Best-Practice Tips  

ERIC Educational Resources Information Center

|Audience response systems (ARS) or clickers, as they are commonly called, offer a management tool for engaging students in the large classroom. Basic elements of the technology are discussed. These systems have been used in a variety of fields and at all levels of education. Typical goals of ARS questions are discussed, as well as methods of…

Caldwell, Jane E.

2007-01-01

81

Implementing Concept-based Learning in a Large Undergraduate Classroom  

Microsoft Academic Search

An experiment explicitly introducing learning strategies to a large, first-year undergraduate cell biology course was undertaken to see whether awareness and use of strategies had a measurable impact on student performance. The construction of concept maps was selected as the strategy to be introduced because of an inherent coherence with a course structured by concepts. Data were collected over three

David Morse; France Jutras

2008-01-01

82

Implementing Concept-Based Learning in a Large Undergraduate Classroom  

ERIC Educational Resources Information Center

|An experiment explicitly introducing learning strategies to a large, first-year undergraduate cell biology course was undertaken to see whether awareness and use of strategies had a measurable impact on student performance. The construction of concept maps was selected as the strategy to be introduced because of an inherent coherence with a…

Morse, David; Jutras, France

2008-01-01

83

The Incredible Years Teacher Classroom Management Program: Using Coaching to Support Generalization to Real-World Classroom Settings  

ERIC Educational Resources Information Center

|This article focuses on the Incredible Years Teacher Classroom Management Training (IY TCM) intervention as an example of an evidence-based program that embeds coaching within its design. First, the core features of the IY TCM program are described. Second, the IY TCM coaching model and processes utilized to facilitate high fidelity of…

Reinke, Wendy M.; Stormont, Melissa; Webster-Stratton, Carolyn; Newcomer, Lori L.; Herman, Keith C.

2012-01-01

84

Active Learning in a Large General Physics Classroom.  

NASA Astrophysics Data System (ADS)

In 2004, we launched a new calculus-based, introductory physics sequence at Washington University. Designed as an alternative to our traditional lecture-based sequence, the primary objectives for this new course were to actively engage students in the learning process, to significantly strengthen students' conceptual reasoning skills, to help students develop higher level quantitative problem solving skills necessary for analyzing ``real world'' problems, and to integrate modern physics into the curriculum. This talk will describe our approach, using The Six Ideas That Shaped Physics text by Thomas Moore, to creating an active learning environment in large classes as well as share our perspective on key elements for success and challenges that we face in the large class environment.

Trousil, Rebecca

2008-04-01

85

Adaptive, multiresolution visualization of large data sets using parallel octrees.  

SciTech Connect

The interactive visualization and exploration of large scientific data sets is a challenging and difficult task; their size often far exceeds the performance and memory capacity of even the most powerful graphics work-stations. To address this problem, we have created a technique that combines hierarchical data reduction methods with parallel computing to allow interactive exploration of large data sets while retaining full-resolution capability. The hierarchical representation is built in parallel by strategically inserting field data into an octree data structure. We provide functionality that allows the user to interactively adapt the resolution of the reduced data sets so that resolution is increased in regions of interest without sacrificing local graphics performance. We describe the creation of the reduced data sets using a parallel octree, the software architecture of the system, and the performance of this system on the data from a Rayleigh-Taylor instability simulation.

Freitag, L. A.; Loy, R. M.

1999-06-10

86

Science Teacher Beliefs and Classroom Practice Related to Constructivism in Different School Settings  

NASA Astrophysics Data System (ADS)

Science teacher beliefs and classroom practice related to constructivism and factors that may influence classroom practice were examined in this cross-case study. Data from four science teachers in two schools included interviews, demographic questionnaire, Classroom Learning Environment Survey (preferred/perceived), and classroom observations and documents. Using an inductive analytic approach, results suggested that the teachers embraced constructivism, but classroom observations did not confirm implementation of these beliefs for three of the four teachers. The most preferred constructivist components were personal relevance and student negotiation; the most perceived component was critical voice. Shared control was the least preferred, least perceived, and least observed constructivist component. School type, grade, student behavior/ability, curriculum/standardized testing, and parental involvement may influence classroom practice.

Savasci, Funda; Berlin, Donna F.

2012-02-01

87

Looking at large data sets using binned data plots  

SciTech Connect

This report addresses the monumental challenge of developing exploratory analysis methods for large data sets. The goals of the report are to increase awareness of large data sets problems and to contribute simple graphical methods that address some of the problems. The graphical methods focus on two- and three-dimensional data and common task such as finding outliers and tail structure, assessing central structure and comparing central structures. The methods handle large sample size problems through binning, incorporate information from statistical models and adapt image processing algorithms. Examples demonstrate the application of methods to a variety of publicly available large data sets. The most novel application addresses the too many plots to examine'' problem by using cognostics, computer guiding diagnostics, to prioritize plots. The particular application prioritizes views of computational fluid dynamics solution sets on the fly. That is, as each time step of a solution set is generated on a parallel processor the cognostics algorithms assess virtual plots based on the previous time step. Work in such areas is in its infancy and the examples suggest numerous challenges that remain. 35 refs., 15 figs.

Carr, D.B.

1990-04-01

88

Student-Centred Anti-Smoking Education: Comparing a Classroom-Based and an Out-of-School Setting  

ERIC Educational Resources Information Center

|The present study monitored a student-centred educational anti-smoking intervention with fifth graders by focusing on their cognitive achievement and intrinsic motivation. In order to assess the potential influence of the setting on self-directed learning, the intervention was conducted in two different learning environments: a classroom-based…

Geier, Christine S.; Bogner, Franz X.

2010-01-01

89

The Effects of a Teacher-Child Play Intervention on Classroom Compliance in Young Children in Child Care Settings  

ERIC Educational Resources Information Center

|The current study evaluated the effects of a teacher-conducted play intervention on preschool-aged children's compliance in child care settings. Study participants included 8 children ranging in age from 3 to 5 years and 5 early childhood education teachers within 5 classrooms across 5 child care centers. A combination ABAB and multiple baseline…

Levine, Darren G.; Ducharme, Joseph M.

2013-01-01

90

Adaptation of Bharatanatyam dance pedagogy for multicultural classrooms: questions and relevance in a North American university setting  

Microsoft Academic Search

This article opens up questions around introducing Bharatanatyam, a form of Indian classical dance, to undergraduate learners within a North American university setting. The aim is to observe how the learners understood and received a particular cultural practice and to explore issues related to learning goals, curriculum content, approaches to pedagogy and classroom management. A qualitative approach used the combined

Suparna Banerjee

2012-01-01

91

Prosocial entry behaviors used by preschoolers to enter play groups in the natural setting of the classroom  

Microsoft Academic Search

The purpose of this research was to identify specific entry behaviors used by preschoolers ranging in age from 4 3 to 5.2 as attempts are made into play groups in the natural setting of the classroom and play yard. When successful entry behaviors are displayed by preschoolers and are identified by researchers or teachers, those behaviors can possibly be taught

Reudene Elizabeth Wilburn

1997-01-01

92

Student-Centred Anti-Smoking Education: Comparing a Classroom-Based and an Out-of-School Setting  

ERIC Educational Resources Information Center

The present study monitored a student-centred educational anti-smoking intervention with fifth graders by focusing on their cognitive achievement and intrinsic motivation. In order to assess the potential influence of the setting on self-directed learning, the intervention was conducted in two different learning environments: a classroom-based…

Geier, Christine S.; Bogner, Franz X.

2010-01-01

93

Assessing the Effectiveness of Mobile Learning in Large Hybrid\\/Blended Classrooms  

Microsoft Academic Search

This article describes a method we created to evaluate the impact of mobile learning on a large hybrid\\/blended computer science\\u000a classroom of 562 students (about 90% being online). The impact of the mLearning system and learning activities is evaluated\\u000a through pre- and post-surveys and from four aspects: 1) if student enjoyed the learning experience, 2) how students feel about\\u000a interacting

Minjuan Wang; Daniel Novak; Ruimin Shen

2008-01-01

94

Visualization of Large, Multidimensional Multivariate Data Sets. Phase 1.  

National Technical Information Service (NTIS)

The project establishes the technical feasibility of a visualization workstation for very large data sets. The Phase 1 system consists of an IBM PC/AT with 2 Mbytes of expanded memory, frame buffer, and write-once optical disk drive. The latter provides r...

R. D. Lucas K. Mills Y. Kim

1987-01-01

95

Smooth approximation and rendering of large scattered data sets  

Microsoft Academic Search

We present an efficient method to automatically compute a smooth approximation of large functional scattered data sets given over arbitrarily shaped planar domains. Our approach is based on the construction of a C1-continuous bivariate cubic spline and our method offers optimal approximation order. Both local variation and nonuniform distribution of the data are taken into account by using local polynomial

Jörg Haber; Frank Zeilfelder; Oleg Davydov; Hans-Peter Seidel

2001-01-01

96

Smooth approximation and rendering of large scattered data sets  

Microsoft Academic Search

Presents an efficient method to automatically compute a smooth approximation of large functional scattered data sets given over arbitrarily shaped planar domains. Our approach is based on the construction of a C 1-continuous bivariate cubic spline and our method offers optimal approximation order. Both local variation and nonuniform distribution of the data are taken into account by using local polynomial

J. Haber; F. Zeilfelder; O. Davydov; H.-P. Seidel

2001-01-01

97

Student-centred anti-smoking education: Comparing a classroom-based and an out-of-school setting  

Microsoft Academic Search

The present study monitored a student-centred educational anti-smoking intervention with fifth graders by focusing on their\\u000a cognitive achievement and intrinsic motivation. In order to assess the potential influence of the setting on self-directed\\u000a learning, the intervention was conducted in two different learning environments: a classroom-based group in class at school;\\u000a and an out-of-school group in an outreach setting at a

Christine S. GeierFranz; Franz X. Bogner

2010-01-01

98

Classrooms that Work: Teaching Generic Skills in Academic and Vocational Settings.  

ERIC Educational Resources Information Center

This report documents the second of two studies on teaching and learning generic skills in high schools. It extends the earlier work by providing a model for designing classroom instruction in both academic and vocational classrooms where teaching generic skills is an instructional goal. Ethnographic field methods were used to observe, record, and…

Stasz, Cathleen; And Others

99

Four Easels, Five Sand Tables, and a Billion Blocks: Setting Up an Early Childhood Classroom.  

ERIC Educational Resources Information Center

|Offers suggestions for selecting appropriate classroom materials and designing an early-childhood classroom in which children learn through play. Focuses on the decisions a beginning teacher needs to make, such as selecting the curriculum, identifying appropriate learning areas, finding intriguing learning materials, selecting comfortable…

Johnston, Callum B.

1998-01-01

100

Who's Doing the Pointing? Investigating Facilitated Communication in a Classroom Setting with Students with Autism  

Microsoft Academic Search

The first author, a certified speech-language pathologist (SLP), served as the facilitator for two students with autism to assess pointing control during facilitated communication. The teacher instructed the students during typical classroom activities, and two classroom assistants collected data. We used a counterbalanced alternating treatments design with the SLP\\/facilitator being either blind or sighted. She wore sunglasses throughout the investigation

Rosemary G. Kerrin; Jane Y. Murdock; William R. Sharpton; Nichelle Jones

1998-01-01

101

Examining Play among Young Children in Single-Age and Multi-Age Preschool Classroom Settings  

ERIC Educational Resources Information Center

Advocates for multi-age classrooms claim multi-age groupings benefit children (Brynes, Shuster, & Jones, 1994). Currently, there is a lack of research examining play among students in multi-age classrooms. If indeed there is a positive benefit of play among children, research is needed to examine these behaviors among and between young children in…

Youhne, Mia Song

2009-01-01

102

Systematic analysis of large screening sets in drug discovery.  

PubMed

Each year large pharmaceutical companies produce massive amounts of primary screening data for lead discovery. To make better use of the vast amount of information in pharmaceutical databases, companies have begun to scrutinize the lead generation stage to ensure that more and better qualified lead series enter the downstream optimization and development stages. This article describes computational techniques for end to end analysis of large drug discovery screening sets. The analysis proceeds in three stages: In stage 1 the initial screening set is filtered to remove compounds that are unsuitable as lead compounds. In stage 2 local structural neighborhoods around active compound classes are identified, including similar but inactive compounds. In stage 3 the structure-activity relationships within local structural neighborhoods are analyzed. These processes are illustrated by analyzing two large, publicly available databases. PMID:16472218

Blower, Paul E; Cross, Kevin P; Fligner, Michael A; Myatt, Glenn J; Verducci, Joseph S; Yang, Chihae

2004-01-01

103

Teaching and learning in an integrated curriculum setting: A case study of classroom practices  

NASA Astrophysics Data System (ADS)

Curriculum integration, while a commonly used educational term, remains a challenging concept to define and examine both in research and in classroom practice. Numerous types and definitions of curriculum integration exist in educational research, while, in comparison, teachers tend to focus on curriculum integration simply as a mixing of subject areas. To better understand curriculum integration in practice, this thesis details a case study that examines both teacher and student perspectives regarding a grade nine integrated unit on energy. Set in a public secondary school in Ontario, Canada, I comprehensively describe and analyze teacher understandings of, and challenges with, the implementation of an integrated unit, while also examining student perspectives and academic learning. My participants consisted of two high school teachers, a geography teacher and a science teacher, and their twenty-three students. Using data gathered from interviews before, during, and after the implementation of a 16-lesson unit, as well as observations throughout, I completed a case description and thematic analysis. My results illustrate the importance of examining why teachers choose to implement an integrated unit and the planning and scheduling challenges that exist. In addition, while the students in this study were academically successful, clarification is needed regarding whether student success can be linked to the integration of these two subjects or the types of activities these two teachers utilized.

MacMath, Sheryl Lynn

104

Gaussian predictive process models for large spatial data sets  

PubMed Central

Summary With scientific data available at geocoded locations, investigators are increasingly turning to spatial process models for carrying out statistical inference. Over the last decade, hierarchical models implemented through Markov chain Monte Carlo methods have become especially popular for spatial modelling, given their flexibility and power to fit models that would be infeasible with classical methods as well as their avoidance of possibly inappropriate asymptotics. However, fitting hierarchical spatial models often involves expensive matrix decompositions whose computational complexity increases in cubic order with the number of spatial locations, rendering such models infeasible for large spatial data sets. This computational burden is exacerbated in multivariate settings with several spatially dependent response variables. It is also aggravated when data are collected at frequent time points and spatiotemporal process models are used. With regard to this challenge, our contribution is to work with what we call predictive process models for spatial and spatiotemporal data. Every spatial (or spatiotemporal) process induces a predictive process model (in fact, arbitrarily many of them). The latter models project process realizations of the former to a lower dimensional subspace, thereby reducing the computational burden. Hence, we achieve the flexibility to accommodate non-stationary, non-Gaussian, possibly multivariate, possibly spatiotemporal processes in the context of large data sets. We discuss attractive theoretical properties of these predictive processes. We also provide a computational template encompassing these diverse settings. Finally, we illustrate the approach with simulated and real data sets.

Banerjee, Sudipto; Gelfand, Alan E.; Finley, Andrew O.; Sang, Huiyan

2009-01-01

105

Intelligent Archiving and Physics Mining of Large Data Sets (Invited)  

NASA Astrophysics Data System (ADS)

There are unique challenges in all aspects related to large data sets, from storage, search and access, to analysis and file sharing. With few exceptions, the adoption of the latest technologies to deal with the management and mining of large data sets has been slow in heliosciences. Web services such as CDAweb have been very successful and have been widely adopted by the community. There are also significant efforts going towards Virtual Observatories (VxOs). The main thrust of VxOs has so far been on data discovery, aggregation and uniform presentation. While work remains, many VxOs can now be used to access data. However data is not knowledge and the challenge of extracting physics from the large data sets remains. Here we review our efforts on (i) implementing advanced data mining techniques as part of the data-to-knowledge discovery pipeline, and (ii) use of social networking paradigm in the development of a science collaboratory environment that enables sharing of large files, creation of projects, among others. We will present new data mining software that works on a variety of data formats and demonstrate its capability through several examples of analysis of spacecraft data. The use of such techniques in intelligent archiving will be discussed. Finally, the use of our science collaboratory service and its unique sharing features such as universal accessibility of staged files will be illustrated.

Karimabadi, H.

2009-12-01

106

Spatial compounding of large sets of 3D echocardiography images  

NASA Astrophysics Data System (ADS)

We present novel methodologies for compounding large numbers of 3D echocardiography volumes. Our aim is to investigate the effect of using an increased number of images, and to compare the performance of different compounding methods on image quality. Three sets of 3D echocardiography images were acquired from three volunteers. Each set of data (containing 10+ images) were registered using external tracking followed by state-of-the-art image registration. Four compounding methods were investigated, mean, maximum, and two methods derived from phase-based compounding. The compounded images were compared by calculating signal-to-noise ratios and contrast at manually identified anatomical positions within the images, and by visual inspection by experienced echocardiographers. Our results indicate that signal-to-noise ratio and contrast can be improved using increased number of images, and that a coherent compounded image can be produced using large (10+) numbers of 3D volumes.

Yao, Cheng; Simpson, John M.; Jansen, Christian H. P.; King, Andrew P.; Penney, Graeme P.

2009-02-01

107

Connecting scientific research and classroom instruction: Developing authentic problem sets for the undergraduate organic chemistry curriculum  

NASA Astrophysics Data System (ADS)

Reform efforts in science education have called for instructional methods and resources that mirror the practice of science. Little research and design methods have been documented in the literature for designing such materials. The purpose of this study was to develop problems sets for sophomore-level organic chemistry instruction. This research adapted an instructional design methodology from the science education literature for the creation of new curricular problem sets. The first phase of this study was to establish an understanding of current curricular problems in sophomore-level organic chemistry instruction. A sample of 792 problems was collected from four organic chemistry courses. These problems were assessed using three literature reported problem typologies. Two of these problem typologies have previously been used to understand general chemistry problems; comparisons between general and organic chemistry problems were thus made. Data from this phase was used to develop a set of five problems for practicing organic chemists. The second phase of this study was to explore practicing organic chemists' experiences solving problems in the context of organic synthesis research. Eight practicing organic chemists were interviewed and asked to solve two to three of the problems developed in phase one of this research. These participants spoke of three problem types: project level, synthetic planning, and day-to-day. Three knowledge types (internal knowledge, knowledgeable others, and literature) were used in solving these problems in research practice and in the developed problems. A set of guiding factors and implications were derived from this data and the chemistry education literature for the conversion of the problems for practicing chemists to problems for undergraduate students. A subsequent conversion process for the five problems occurred. The third, and last phase, of this study was to explore undergraduate students' experiences solving problems in the classroom. Eight undergraduate students from four different organic chemistry courses were interviewed and asked to solve three of the problems converted at the end of phase two. Data from these interviews were used to understand the types, methods, and knowledge uses by undergraduate students in the problem-solving process. Data from all three phases were used to assert seven ideas for the development of problems for undergraduate students.

Raker, Jeffrey R.

108

JHelioviewer: Visualizing Large Sets of Solar Images Using JPEG 2000  

Microsoft Academic Search

Across all disciplines that work with image data - from astrophysics to\\u000amedical research and historic preservation - there is a growing need for\\u000aefficient ways to browse and inspect large sets of high-resolution images. We\\u000apresent the development of a visualization software for solar physics data\\u000abased on the JPEG 2000 image compression standard. Our implementation consists\\u000aof the

Daniel Mueller; Bernhard Fleck; George Dimitoglou; Benjamin W. Caplins; Desmond E. Amadigwe; Juan Pablo Garcia Ortiz; Benjamin Wamsler; Alen Alexanderian; V. Keith Hughitt; Jack Ireland

2009-01-01

109

Visualizing large data sets in the earth sciences  

SciTech Connect

With single data sets containing billions of points, meteorologists and other earth scientists face an avalanche of data received from their remote-sensing instruments and numerical simulation models. The Space Science and Engineering Center (SSEC) at the University of Wisconsin-Madison led the evolution of weather visualization systems from paper to electronic displays with their Mancomputer Interactive Data Access System (MCIDAS). They have continued this evolution into animated three-dimensional images and recently into highly interactive displays. Their software can manage, analyze, and visualize large data sets that span many physical variables (such as temperature, pressure, humidity, and wind speed), as well as time and three spatial dimensions. McIDAS has produced three-dimensional animations of data sets from many diverse sources on videotape and on a special binocular stereo workstation. Its applications are discussed in this paper.

Hibbard, W.; Santek, D. (Wisconsin Univ., Madison, WI (USA))

1989-08-01

110

Turkish Pre-Service Teachers` Perceived Self-Efficacy Beliefs and Knowledge about Using Expository Text as an Instructional Tool in Their Future Classroom Settings  

Microsoft Academic Search

The aim of this research was to examine Turkish pre-service teachers` knowledge and perceived self-efficacy beliefs toward using expository text as an instructional tool in their future classroom settings. The research sample were 346 pre-service teachers who studied in different teacher preparation programs which included elementary classroom and middle content classrooms (for example, science, social studies and Turkish language arts)

Kasim Yildirim; Seyit Ates

2012-01-01

111

Design Experiments: Theoretical and Methodological Challenges in Creating Complex Interventions in Classroom Settings  

Microsoft Academic Search

Ann L. Brown University of California—Berkeley The lion's share of my current research program is devoted to the study of learning in the blooming, buzzing confusion of inner-city classrooms. My high-level goal is to transform grade-school classrooms from work sites where students perform assigned tasks under the management of teachers into communities of learning (Bereiter & Scardamalia, 1989; Brown &

L. Brown

1992-01-01

112

Quantitative prediction of reduction in large pipe setting round process  

NASA Astrophysics Data System (ADS)

The control manner during the process to ensure the quality of pipe products mainly relies on the operator's experience, so it is very necessary to study the setting round process and obtain its spring-back law. The setting round process is shaping an oval section pipe into circular section, so it is difficult to provide a quantificational analysis for its spring-back process because of the curvature inequality of pipe section neutral layer. However, the spring-back law of the circle-oval process can be easily predicted. The experimental method is firstly used to establish the equivalent effect between the setting round process and the circle-oval process. The setting round process can be converted into the circle-oval process. There are two difficulties in the theoretical analysis for the circle-oval process: elastic-plastic bending problem of curved beam; statically indeterminate problem. A quantitative analytic method for the circle-oval process is presented on the basis of combination of the spring-back law of plane curved beam with the element dividing idea in finite element method. The ovality after unloading versus the relative reduction is plotted with analytical and experimental results respectively, which shows a fair agreement. Finally, the method of quantitative prediction of reduction for large pipe setting round is given based on the equivalent effect and the analytical results. Five pipes, which are needed to be set round, are used to carry out experiment so as to verify this method. The results of verification experiment indicates that, in the experimental range, the residual ovality are all under 0.35% after the once only setting round with the theoretical prediction reductions. It is much less than the 1% requirement of pipe standard. Applying the established theoretical analysis is able to correct the pipe ovality with sufficient accuracy, which provides theoretical direction to plant use.

Zhao, Jun; Zhan, Peipei; Ma, Rui; Zhai, Ruixue

2013-07-01

113

The Single and Combined Effects of Multiple Intensities of Behavior Modification and Methylphenidate for Children with Attention Deficit Hyperactivity Disorder in a Classroom Setting  

ERIC Educational Resources Information Center

|Currently behavior modification, stimulant medication, and combined treatments are supported as evidence-based interventions for attention deficit hyperactivity disorder in classroom settings. However, there has been little study of the relative effects of these two modalities and their combination in classrooms. Using a within-subject design,…

Fabiano, Gregory A.; Pelham, William E., Jr.; Gnagy, Elizabeth M.; Burrows-MacLean, Lisa; Coles, Erika K.; Chacko, Anil; Wymbs, Brian T.; Walker, Kathryn S.; Arnold, Fran; Garefino, Allison; Keenan, Jenna K.; Onyango, Adia N.; Hoffman, Martin T.; Massetti, Greta M.; Robb, Jessica A.

2007-01-01

114

Turkish Pre-Service Teachers' Perceived Self-Efficacy Beliefs and Knowledge about Using Expository Text as an Instructional Tool in Their Future Classroom Settings  

ERIC Educational Resources Information Center

|The aim of this research was to examine Turkish pre-service teachers' knowledge and perceived self-efficacy beliefs toward using expository text as an instructional tool in their future classroom settings. The research sample were 346 pre-service teachers who studied in different teacher preparation programs which included elementary classroom

Yildirim, Kasim; Ates, Seyit

2012-01-01

115

The Single and Combined Effects of Multiple Intensities of Behavior Modification and Methylphenidate for Children With Attention Deficit Hyperactivity Disorder in a Classroom Setting  

Microsoft Academic Search

Currently behavior modification, stimulant medication, and combined treatments are supported as evidence-based interventions for attention deficit hyper- activity disorder in classroom settings. However, there has been little study of the relative effects of these two modalities and their combination in classrooms. Using a within-subject design, the present study investigated the single effects of behavior modification (no, low, and high intensity),

Gregory A. Fabiano; William E. Pelham; Elizabeth M. Gnagy; Lisa Burrows-MacLean; Erika K. Coles; Anil Chacko; Brian T. Wymbs; Kathryn S. Walker; Fran Arnold; Allison Garefino; Jenna K. Keenan; Adia N. Onyango; Martin T. Hoffman; Greta M. Massetti; Jessica A. Robb

116

Support vector machine classifiers for large data sets.  

SciTech Connect

This report concerns the generation of support vector machine classifiers for solving the pattern recognition problem in machine learning. Several methods are proposed based on interior point methods for convex quadratic programming. Software implementations are developed by adapting the object-oriented packaging OOQP to the problem structure and by using the software package PETSc to perform time-intensive computations in a distributed setting. Linear systems arising from classification problems with moderately large numbers of features are solved by using two techniques--one a parallel direct solver, the other a Krylov-subspace method incorporating novel preconditioning strategies. Numerical results are provided, and computational experience is discussed.

Gertz, E. M.; Griffin, J. D.

2006-01-31

117

Discursive practices as cultural resources: Formulating identities for individual and collective in an inclusive classroom setting  

Microsoft Academic Search

For this study I explored an elementary classroom with particular focus on how discursive practices became cultural resources for learners in formulating identities as individuals and group members. Through a Vygotskian perspective on development and learning, I focused on how using developing resources became consequential for both the collective and individuals. This study occurred over 4 years in a public

LeAnn G. Putney

2007-01-01

118

Discursive Practices as Cultural Resources: Formulating Identities for Individual and Collective in an Inclusive Classroom Setting  

ERIC Educational Resources Information Center

For this study I explored an elementary classroom with particular focus on how discursive practices became cultural resources for learners in formulating identities as individuals and group members. Through a Vygotskian perspective on development and learning, I focused on how using developing resources became consequential for both the collective…

Putney, LeAnn G.

2007-01-01

119

Mobile Learning in a Large Blended Computer Science Classroom: System Function, Pedagogies, and Their Impact on Learning  

ERIC Educational Resources Information Center

|The computer science classes in China's institutions of higher education often have large numbers of students. In addition, many institutions offer "blended" classes that include both on-campus and online students. These large blended classrooms have long suffered from a lack of interactivity. Many online classes simply provide recorded…

Shen, Ruimin; Wang, Minjuan; Gao, Wanping; Novak, D.; Tang, Lin

2009-01-01

120

Parallel Analysis Tools for Ultra-Large Climate Data Sets  

NASA Astrophysics Data System (ADS)

While climate models have used parallelism for several years, the post-processing tools are still mostly single-threaded applications and many are closed source. These tools are becoming a bottleneck in the production of new climate knowledge when they confront terabyte-sized output from high-resolution climate models. The ParVis project is using and creating Free and Open Source tools that bring data and task parallelism to climate model analysis to enable analysis of large climate data sets. ParVis is using the Swift task-parallel language to implement a diagnostic suite that generates over 600 plots of atmospheric quantities. ParVis has also created a Parallel Gridded Analysis Library (ParGAL) which implements many common climate analysis operations in a data-parallel fashion using the Message Passing Interface. ParGAL has in turn been built on sophisticated packages for describing grids in parallel (the Mesh Oriented database (MOAB), performing vector operations on arbitrary grids (Intrepid) and reading data in parallel (PnetCDF). ParGAL is being used to implement a parallel version of the NCAR Command Language (NCL) called ParNCL. ParNCL/ParCAL not only speeds up analysis of large datasets but also allows operations to be performed on native grids, eliminating the need to transform data to latitude-longitude grids. All of the tools ParVis is creating are available as free and open source software.

Jacob, Robert; Krishna, Jayesh; Xu, Xiabing; Mickelson, Sheri; Wilde, Mike; Peterson, Kara; Bochev, Pavel; Latham, Robert; Tautges, Tim; Brown, David; Brownrigg, Richard; Haley, Mary; Shea, Dennis; Huang, Wei; Middleton, Don; Schuchardt, Karen; Yin, Jian

2013-04-01

121

Service user involvement in pre-registration mental health nurse education classroom settings: a review of the literature.  

PubMed

Service user involvement in pre-registration nurse education is now a requirement, yet little is known about how students engage with users in the classroom, how such initiatives are being evaluated, how service users are prepared themselves to teach students, or the potential influence on clinical practice. The aim of this literature review was to bring together published articles on service user involvement in classroom settings in pre-registration mental health nurse education programmes, including their evaluations. A comprehensive review of the literature was carried out via computer search engines and the Internet, as well as a hand search of pertinent journals and references. This produced eight papers that fitted the inclusion criteria, comprising four empirical studies and four review articles, which were then reviewed using a seven-item checklist. The articles revealed a range of teaching and learning strategies had been employed, ranging from exposure to users' personal stories, to students being required to demonstrate awareness of user perspectives in case study presentations, with others involving eLearning and assessment skills initiatives. This review concludes that further longitudinal research is needed to establish the influence of user involvement in the classroom over time. PMID:22296494

Terry, J

2012-02-01

122

Preschool Children's Multimodal Meaning Making: Verbal and Nonverbal Communication Within Two Different Classroom Settings  

Microsoft Academic Search

This study investigated the effects of two different classroom contexts, sociodramatic play and a teacher led activity, on children’s use of verbal and non-verbal communication. Additionally, the effect of children’s gender on their use of verbal and non-verbal communicational modes was examined. Participating in the study were 24 children between the ages of 37 and 55 months old, who were

Zubeyde Dogan

2010-01-01

123

Using A Time-Sharing Computer System in the Classroom: Large-Screen Projection Television as an Interactive Teaching Aid.  

ERIC Educational Resources Information Center

|For less than $3,000 per classroom, Dyersburg State Community College (Texas) has integrated its campus time-sharing computer system into projection television sets under interactive, teacher control. Six uses of the Teacher's Interactive Video Instructional System identified so far are described. (JN)|

Rorie, Charles D.

1983-01-01

124

Engaging millennial learners: Effectiveness of personal response system technology with nursing students in small and large classrooms.  

PubMed

Nurse educators must explore innovative technologies that make the most of the characteristics and learning styles of millennial learners. These students are comfortable with technology and prefer interactive classrooms with individual feedback and peer collaboration. This study evaluated the perceived effectiveness of personal response system (PRS) technology in enhancing student learning in small and large classrooms. PRS technology was integrated into two undergraduate courses, nursing research (n = 33) and junior medical-surgical nursing (n = 116). Multiple-choice, true-false, NCLEX-RN alternate format, and reading quiz questions were incorporated within didactic PowerPoint presentations. Data analysis of Likert-type and open-response questions supported the use of PRS technology as an effective strategy for educating millennial learners in both small and large classrooms. PRS technology promotes active learning, increases participation, and provides students and faculty with immediate feedback that reflects comprehension of content and increases faculty-student interaction. PMID:20055325

Revell, Susan M Hunter; McCurry, Mary K

2010-05-01

125

Classroom Behavior of Reflective and Impulsive Children.  

ERIC Educational Resources Information Center

|This paper describes a study of the classroom behavior patterns of 79 reflective and impulsive elementary school children in each of three contextual settings: individual setting (independent, unsupervised seat work); large group setting (15 or more students instructed by the teacher or another adult); and small group setting (similar to large

Moore, Melvin G.

126

Large Data set management tools in European Grid middleware  

NASA Astrophysics Data System (ADS)

Today scientific computational tasks are becoming more and more data-intensive and therefore in the Grid computing environment is important to have tools that easily integrate storage resources that provide high capacity, redundancy and scalability. Data movement and replication are also important functions to guarantee optimized access to files. Making storage resources shareable through the Grid middleware technology requires that those systems expose a uniform standard interface. The need for a homogeneous, transparent interface to storage leaded to the definition of the Storage Resource Manager (SRM) interface. Thus, space management for any storage manager implementation looks the same to a client. The StoRM project, a joint collaboration between CNAF/INAF, ICTP Egrid project and CERN, aims at implementing the SRM standard over parallel file systems like GPFS and Lustre. In this talk I will briefly discuss data managements tools developed within the most important European Grid projects and I will shortly present Storm and its features. I finally will discuss typical case studies where large data set produced by ab-initio simulations can be easily handled within computational grids with appropriated tools like the one described before.

Cozzini, S.

2005-12-01

127

Using JPEG 2000 interactive protocol to stream a large image or a large image set.  

PubMed

The electronic health record (EHR) is expected to improve the quality of care by enabling access to relevant information at the diagnostic decision moment. During deployment efforts for including images in the EHR, a main challenge has come up from the need to compare old images with current ones. When old images reside in a different system, they need to be imported for visualization which leads to a problem related to persistency management and information consistency. A solution consisting in avoiding image import is achievable with image streaming. In this paper we present, evaluate, and discuss two medical-specific streaming use cases: displaying a large image such as a digital mammography image and displaying a large set of relatively small images such as a large CT series. PMID:20978921

Noumeir, Rita; Pambrun, Jean-François

2011-10-01

128

Comparison of methods for sequential screening of large compound sets.  

PubMed

Sequential screening is an iterative procedure that can greatly increase hit rates over random screening or non-iterative procedures. We studied the effects of three factors on enrichment rates: the method used to rank compounds, the molecular descriptor set and the selection of initial training set. The primary factor influencing recovery rates was the method of selecting the initial training set. Rates for recovering active compounds were substantially lower with the diverse training sets than they were with training sets selected by other methods. Because structure-activity information is incrementally enhanced in intermediate training sets, sequential screening provides significant improvement in the average rate of recovery of active compounds when compared with non-iterative selection procedures. PMID:16475969

Blower, Paul E; Cross, Kevin P; Eichler, Gabriel S; Myatt, Glenn J; Weinstein, John N; Yang, Chihae

2006-02-01

129

An Examination of the Applications of Constitutional Concepts as an Approach to Classroom Management: Four Studies of Judicious Discipline in Various Classroom Settings.  

ERIC Educational Resources Information Center

This paper presents a composite of four separate research studies conducted to assess the impact of constitutional language on classroom environments. The studies were designed to examine the uses of "Judicious Discipline" in a variety of classrooms and how the use of a common language based on rights and responsibilities affected the behavior of…

McEwan, Barbara; Gathercoal, Paul; Nimmo, Virginia

130

Text Sets in the Adult Developmental Reading Classroom: Expanding Literacy through Diverse Readings.  

ERIC Educational Resources Information Center

Describes how text sets (a group of related texts of varied genres and reading levels) can help meet the needs of the diverse population of students enrolled in community college developmental reading courses. Describes how to develop a text set, and describes four text sets used by the author. Discusses how cooperative learning and journal…

Fernandez, Jody

2000-01-01

131

Introduction to Statistical Methods for Analyzing Large Data Sets: Gene-Set Enrichment Analysis  

PubMed Central

This Teaching Resource provides lecture notes, slides, and a problem set for a series of lectures introducing the mathematical concepts behind gene-set enrichment analysis (GSEA) and were part of a course entitled “Systems Biology: Biomedical Modeling.” GSEA is a statistical functional enrichment analysis commonly applied to identify enrichment of biological functional categories in sets of ranked differentially expressed genes from genome-wide mRNA expression data sets.

Clark, Neil R.; Ma'ayan, Avi

2011-01-01

132

Sampling methods and sensitivity analysis for large parameter sets  

Microsoft Academic Search

Models with large parameter (i.e., hundreds or thousands of parameters) often behave as if they depend upon only a few parameters, with the rest having comparatively little influence. One challenge of sensitivity analysis with such models is screening parameters to identify the influential ones, and then characterizing their influences. Large models often require significant computing resources to evaluate their output,

T. H. Andres

1997-01-01

133

Clustering by pattern similarity in large data sets  

Microsoft Academic Search

Clustering is the process of grouping a set of objects into classes of similar objects. Although definitions of similarity vary from one clustering model to another, in most of these models the concept of similarity is based on distances, e.g., Euclidean distance or cosine distance. In other words, similar objects are required to have close values on at least a

Haixun Wang; Wei Wang; Jiong Yang; Philip S. Yu

2002-01-01

134

Planar Point Sets with Large Minimum Convex Partitions  

Microsoft Academic Search

Given a finite set S of points in the plane, a convex partition of S is a subdivision of the convex hull of S into nonoverlapping empty convex polygons with vertices in S. Let G(S) be the minimum m such that there exists a convex partition of S with at most m faces. Let F(n) be the maximum value of

Jesus Garc ´ õa-Lopez; Carlos M. Nicolas

2006-01-01

135

Teachers' Evaluations of the Sustainability of Opportunity To Learn (OTL) Assessment Strategies. A National Survey of Classroom Teachers in Large Urban School Districts.  

ERIC Educational Resources Information Center

|At present, there is a lack of information about how teacher-friendly or sustainable opportunity to learn (OTL) assessment strategies are when used in classrooms. This paper describes the results of a national survey of classroom teachers who teach in large urban school districts, districts that are members of the Council of Great City Schools.…

Stevens, Floraline I.; Wiltz, Laura; Bailey, Mona

136

Mining Large Engineering Data Sets on the Grid Using AURA  

Microsoft Academic Search

\\u000a AURA (Advanced Uncertain Reasoning Architecture) is a parallel pattern matching technology intended for high-speed approximate\\u000a search and match operations on large unstructured datasets. This paper represents how the AURA technology is extended and\\u000a used to search the engine data within a major UK eScience Grid project (DAME) for maintenance of Rolls-Royce aero-engines\\u000a and how it may be applied in other

Bojian Liang; Jim Austin

2004-01-01

137

Predictors of Preschool Children's Compliance Behavior in Early Childhood Classroom Settings  

ERIC Educational Resources Information Center

|Working within a person-process-context framework, we investigated the relation of the level of preschool children's compliance to child temperament, caregiver-child interaction in the child care setting, child care quality, and contextual chaos. Participants were 86 preschoolers and their teachers. Our database included both questionnaires and…

Wachs, Theodore D.; Gurkas, Pinar; Kontos, Susan

2004-01-01

138

Predictors of Preschool Children's Compliance Behavior in Early Childhood Classroom Settings  

ERIC Educational Resources Information Center

Working within a person-process-context framework, we investigated the relation of the level of preschool children's compliance to child temperament, caregiver-child interaction in the child care setting, child care quality, and contextual chaos. Participants were 86 preschoolers and their teachers. Our database included both questionnaires and…

Wachs, Theodore D.; Gurkas, Pinar; Kontos, Susan

2004-01-01

139

Best in Class: A Classroom-Based Model for Ameliorating Problem Behavior in Early Childhood Settings  

ERIC Educational Resources Information Center

|As more young children enter school settings to attend early childhood programs, early childhood teachers and school psychologists have been charged with supporting a growing number of young children with chronic problem behaviors that put them at risk for the development of emotional/behavioral disorders (EBDs). There is a need for effective,…

Vo, Abigail K.; Sutherland, Kevin S.; Conroy, Maureen A.

2012-01-01

140

Intercultural Education Set Forward: Operational Strategies and Procedures in Cypriot Classrooms  

ERIC Educational Resources Information Center

Teachers in Cyprus are being called upon for the first time to teach within culturally diverse educational settings. Given the substantial role, teachers play in the implementation of intercultural education, this paper explores the intercultural strategies and procedures adopted by primary school teachers in Cyprus. Interviews were carried out…

Hajisoteriou, Christina

2012-01-01

141

The testing effect, collaborative learning, and retrieval-induced facilitation in a classroom setting  

Microsoft Academic Search

Two studies were conducted to investigate aspects of the test effect in a tertiary education setting. During weekly tutorial sessions first year psychology students watched a psychobiology video (Phase 1), followed by different video-related activities (Phase 2). In the tutorial 1 week later, students took an unexpected test (Phase 3). In Phase 2 of Study 1, students completed a quiz

Jacquelyn Cranney; Mihyun Ahn; Rachel McKinnon; Sue Morris; Kaaren Watts

2009-01-01

142

A Classroom Exercise in Spatial Analysis Using an Imaginary Data Set.  

ERIC Educational Resources Information Center

|One skill that elementary students need to acquire is the ability to analyze spatially distributed data. In this activity students are asked to complete the following tasks: (1) plot a set of data (related to "mud-sharks"--an imaginary fish) on a map of the state of Alabama, (2) identify trends in the data, (3) make graphs using the data…

Kopaska-Merkel, David C.

143

Techniques for Handling Large Data Sets in Global Tomography  

NASA Astrophysics Data System (ADS)

Largely due to the success of the IRIS consortium, it is now possible to easily obtain in excess of 250 high quality three component recordings for moderately sized earthquakes (a total of roughly 100,000 recordings per year). Of course, with the advent of US Array, this number will continue to grow. Many techniques have been developed to handle such data streams but usually in a regional context. Here, we describe a development of a cross-correlation technique combined with a waveform clustering algorithm to semi-automatically measure relative arrival times. This method has already been applied to body waves and here we give an extension to measure the relative group arrival times of globally distributed surface waves. The method works with band-pass filtered envelope functions (as in the standard group velocity analysis) but measures the relative arrival times in a fixed frequency band of all waveforms for an event. The clustering provides an automatic method of grouping similar waveforms and of removing bad waveforms. The method is fast and accurate and leads to very large datasets. For example, application to 50 second Rayleigh waves results in a dataset of over 200,000 relative group arrival times with over 25,000 measurements per year in recent years. Such datasets are capable of giving fine-scale resolution of near-surface structure over much of the globe.

Masters, G.; Reif, C.; Manners, U.

2004-12-01

144

Interdependent Learning in an Open Classroom Setting: Dean Rusk Elementary School, 1972-73. Research and Development Report, Volume 7, Number 7, August 1973.  

ERIC Educational Resources Information Center

All special programs at Dean Rusk Elementary School, funded in part under Title I of the 1965 Elementary Secondary Education Act, combined to facilitate individualized instruction in the nongraded, open classroom setting of the school. To better meet the needs of the pupils during the 1972-73 school year, the Follow Through Program included, for…

Goettee, Margaret

145

Value-based customer grouping from large retail data sets  

NASA Astrophysics Data System (ADS)

In this paper, we propose OPOSSUM, a novel similarity-based clustering algorithm using constrained, weighted graph- partitioning. Instead of binary presence or absence of products in a market-basket, we use an extended 'revenue per product' measure to better account for management objectives. Typically the number of clusters desired in a database marketing application is only in the teens or less. OPOSSUM proceeds top-down, which is more efficient and takes a small number of steps to attain the desired number of clusters as compared to bottom-up agglomerative clustering approaches. OPOSSUM delivers clusters that are balanced in terms of either customers (samples) or revenue (value). To facilitate data exploration and validation of results we introduce CLUSION, a visualization toolkit for high-dimensional clustering problems. To enable closed loop deployment of the algorithm, OPOSSUM has no user-specified parameters. Thresholding heuristics are avoided and the optimal number of clusters is automatically determined by a search for maximum performance. Results are presented on a real retail industry data-set of several thousand customers and products, to demonstrate the power of the proposed technique.

Strehl, Alexander; Ghosh, Joydeep

2000-04-01

146

Predictors of preschool children's compliance behavior in early childhood classroom settings  

Microsoft Academic Search

Working within a person–process–context framework, we investigated the relation of the level of preschool children's compliance to child temperament, caregiver–child interaction in the child care setting, child care quality, and contextual chaos. Participants were 86 preschoolers and their teachers. Our database included both questionnaires and observations in child care centers. Child compliance was predicted by child temperament, caregiver behaviors, daycare

Theodore D Wachs; Pinar Gurkas; Susan Kontos

2004-01-01

147

The testing effect: The role of feedback and collaboration in a tertiary classroom setting  

Microsoft Academic Search

SUMMARY Successful retrieval on a test compared to just re-studying material improves long-term retention—a phenomenon called the 'testing effect'. This study investigated the role of feedback and collaborative testing on the retention of course material in a tertiary educational setting. Tested material was better retained relative to non-tested material (testing effect), and feedback facilitated correction of errors. Group testing produced

Marija Vojdanoska; Jacquelyn Cranney; Ben R. Newell

2009-01-01

148

Responsive Classroom  

NSDL National Science Digital Library

The Responsive Classroom addresses some of the challenges present in any elementary classroom, be it first-grade mathematics or third-grade science, by offering "an approach to teaching and learning that fosters safe, challenging, and joyful classrooms and schools, kindergarten through eighth grade." Through this website, classroom teachers share "practical strategies for bringing together social and academic learning throughout the school day." They report that teachers in urban, rural, and suburban settings nationwide find that these strategies have increased student investment, responsibility, and learning, and decreased problem behaviors. Studies detailing the effectiveness of the program are posted on this website. The basic principles of the program are also described, but the books detailing their approach must be purchased. The newsletter, however, is available free of charge and the archive includes previously published articles, which can be searched by topic, such as technology in the classroom and family involvement.

149

The Classroom Observation Schedule to Measure Intentional Communication (COSMIC): An Observational Measure of the Intentional Communication of Children with Autism in an Unstructured Classroom Setting  

ERIC Educational Resources Information Center

|The Classroom Observation Schedule to Measure Intentional Communication (COSMIC) was devised to provide ecologically valid outcome measures for a communication-focused intervention trial. Ninety-one children with autism spectrum disorder aged 6 years 10 months (SD 16 months) were videoed during their everyday snack, teaching and free play…

Pasco, Greg; Gordon, Rosanna K.; Howlin, Patricia; Charman, Tony

2008-01-01

150

Assessing the Effectiveness of Inquiry-based Learning Techniques Implemented in Large Classroom Settings  

NASA Astrophysics Data System (ADS)

Geoscience and education faculty at The University of Akron jointly developed a series of inquiry-based learning modules aimed at both non-major and major student populations enrolled in introductory geology courses. These courses typically serve 2500 students per year in four to six classes of 40-160 students each per section. Twelve modules were developed that contained common topics and assessments appropriate to Earth Science, Environmental Geology and Physical Geology classes. All modules were designed to meet four primary learning objectives agreed upon by Department of Geology faculty. These major objectives include: 1) Improvement of student understanding of the scientific method; 2) Incorporation of problem solving strategies involving analysis, synthesis, and interpretation; 3) Development of the ability to distinguish between inferences, data and observations; and 4) Obtaining an understanding of basic processes that operate on Earth. Additional objectives that may be addressed by selected modules include: 1) The societal relevance of science; 2) Use and interpretation of quantitative data to better understand the Earth; 3) Development of the students' ability to communicate scientific results; 4) Distinguishing differences between science, religion and pseudo-science; 5) Evaluation of scientific information found in the mass media; and 6) Building interpersonal relationships through in-class group work. Student pre- and post-instruction progress was evaluated by administering a test of logical thinking, an attitude toward science survey, and formative evaluations. Scores from the logical thinking instrument were used to form balanced four-person working groups based on the students' incoming cognitive level. Groups were required to complete a series of activities and/or exercises that targeted different cognitive domains based upon Bloom's taxonomy (knowledge, comprehension, application, analysis, synthesis and evaluation of information). Daily assessments of knowledge-level learning included evaluations of student responses to pre- and post-instruction conceptual test questions, short group exercises and content-oriented exam questions. Higher level thinking skills were assessed when students completed exercises that required the completion of Venn diagrams, concept maps and/or evaluation rubrics both during class periods and on exams. Initial results indicate that these techniques improved student attendance significantly and improved overall retention in the course by 8-14% over traditional lecture formats. Student scores on multiple choice exam questions were slightly higher (1-3%) for students taught in the active learning environment and short answer questions showed larger gains (7%) over students' scores in a more traditional class structure.

Steer, D. N.; McConnell, D. A.; Owens, K.

2001-12-01

151

Assessing the Effectiveness of Inquiry-based Learning Techniques Implemented in Large Classroom Settings  

Microsoft Academic Search

Geoscience and education faculty at The University of Akron jointly developed a series of inquiry-based learning modules aimed at both non-major and major student populations enrolled in introductory geology courses. These courses typically serve 2500 students per year in four to six classes of 40-160 students each per section. Twelve modules were developed that contained common topics and assessments appropriate

D. N. Steer; D. A. McConnell; K. Owens

2001-01-01

152

Coaching as a Key Component in Teachers' Professional Development: Improving Classroom Practices in Head Start Settings. OPRE Report 2012-4  

ERIC Educational Resources Information Center

Head Start CARES (Classroom-based Approaches and Resources for Emotion and Social Skill Promotion) is a large-scale, national research demonstration that was designed to test the effects of a one-year program aimed at improving pre-kindergarteners' social and emotional readiness for school. To facilitate the delivery of the program, teachers…

Lloyd, Chrrishana M.; Modlin, Emmily L.

2012-01-01

153

The Classroom Observation Schedule to Measure Intentional Communication (COSMIC): An Observational Measure of the Intentional Communication of Children with Autism in an Unstructured Classroom Setting  

Microsoft Academic Search

The Classroom Observation Schedule to Measure Intentional Communication (COSMIC) was devised to provide ecologically valid\\u000a outcome measures for a communication-focused intervention trial. Ninety-one children with autism spectrum disorder aged 6 years\\u000a 10 months (SD 16 months) were videoed during their everyday snack, teaching and free play activities. Inter-rater reliability\\u000a was high and relevant items showed significant associations with comparable items from concurrent Autism

Greg Pasco; Rosanna K. Gordon; Patricia Howlin; Tony Charman

2008-01-01

154

Analyzing large free-response qualitative data sets — a novel quantitative-qualitative hybrid approach  

Microsoft Academic Search

Qualitative analysis tends to be unwieldy for large data sets yet is an indispensable tool for understanding how and why phenomena occur. Consequently, the goal of this study was to develop a method that is credible yet economical for large, specific, qualitative data sets. The strength of our hybrid, qualitative-quantitative method comes from using automated text analysis techniques to focus

Jennifer Light; Ken Yasuhara

2008-01-01

155

Promoting active learning in large classes using a classroom communication system  

NASA Astrophysics Data System (ADS)

We provide an overview of an instructional strategy aimed at promoting active learning in introductory physics courses. Although a classroom communication system called Classtalk was used to facilitate the interactions among students, and between the students and the instructor, the use of Classtalk is not essential for implementing the instructional strategies described herein. A major focus of this article is a discussion of the types of questions that we have found work well in generating group, and class-wide discussions of physics concepts. We also discuss the types of reasoning used by students to answer specific conceptual questions.

Mestre, Jose P.; Gerace, William J.; Dufresne, Robert J.; Leonard, William J.

1997-03-01

156

Social interaction, private knowledge, and computers in the classroom  

Microsoft Academic Search

Since the inception of general compulsory education, learning has largely taken place in the social setting of the classroom. This constitutes a social experience which helps to shape a child's view of the world; for good or bad, the social nature of the classroom is an inescapable element in this pattern of learning. One fails or succeeds before the gaze

Brian P. Bloomfield

1987-01-01

157

Cockroaches in the Classroom  

NSDL National Science Digital Library

Welcome the Madagascar hissing cockroach into your classroom--they are not your average pest! This article describes the basic biology of this relatively tame creature, and how to set up and care for a classroom colony. It includes a list of suggested inquiry-centered classroom activities that you and your students will find both educational and fun!

Moseley, Christine; Wagler, Ron

2005-03-01

158

Zebrafish Expression Ontology of Gene Sets (ZEOGS): a tool to analyze enrichment of zebrafish anatomical terms in large gene sets.  

PubMed

The zebrafish (Danio rerio) is an established model organism for developmental and biomedical research. It is frequently used for high-throughput functional genomics experiments, such as genome-wide gene expression measurements, to systematically analyze molecular mechanisms. However, the use of whole embryos or larvae in such experiments leads to a loss of the spatial information. To address this problem, we have developed a tool called Zebrafish Expression Ontology of Gene Sets (ZEOGS) to assess the enrichment of anatomical terms in large gene sets. ZEOGS uses gene expression pattern data from several sources: first, in situ hybridization experiments from the Zebrafish Model Organism Database (ZFIN); second, it uses the Zebrafish Anatomical Ontology, a controlled vocabulary that describes connected anatomical structures; and third, the available connections between expression patterns and anatomical terms contained in ZFIN. Upon input of a gene set, ZEOGS determines which anatomical structures are overrepresented in the input gene set. ZEOGS allows one for the first time to look at groups of genes and to describe them in terms of shared anatomical structures. To establish ZEOGS, we first tested it on random gene selections and on two public microarray datasets with known tissue-specific gene expression changes. These tests showed that ZEOGS could reliably identify the tissues affected, whereas only very few enriched terms to none were found in the random gene sets. Next we applied ZEOGS to microarray datasets of 24 and 72?h postfertilization zebrafish embryos treated with beclomethasone, a potent glucocorticoid. This analysis resulted in the identification of several anatomical terms related to glucocorticoid-responsive tissues, some of which were stage-specific. Our studies highlight the ability of ZEOGS to extract spatial information from datasets derived from whole embryos, indicating that ZEOGS could be a useful tool to automatically analyze gene expression pattern features of any large zebrafish gene set. PMID:23656298

Prykhozhij, Sergey V; Marsico, Annalisa; Meijsing, Sebastiaan H

2013-05-08

159

Zebrafish Expression Ontology of Gene Sets (ZEOGS): A Tool to Analyze Enrichment of Zebrafish Anatomical Terms in Large Gene Sets  

PubMed Central

Abstract The zebrafish (Danio rerio) is an established model organism for developmental and biomedical research. It is frequently used for high-throughput functional genomics experiments, such as genome-wide gene expression measurements, to systematically analyze molecular mechanisms. However, the use of whole embryos or larvae in such experiments leads to a loss of the spatial information. To address this problem, we have developed a tool called Zebrafish Expression Ontology of Gene Sets (ZEOGS) to assess the enrichment of anatomical terms in large gene sets. ZEOGS uses gene expression pattern data from several sources: first, in situ hybridization experiments from the Zebrafish Model Organism Database (ZFIN); second, it uses the Zebrafish Anatomical Ontology, a controlled vocabulary that describes connected anatomical structures; and third, the available connections between expression patterns and anatomical terms contained in ZFIN. Upon input of a gene set, ZEOGS determines which anatomical structures are overrepresented in the input gene set. ZEOGS allows one for the first time to look at groups of genes and to describe them in terms of shared anatomical structures. To establish ZEOGS, we first tested it on random gene selections and on two public microarray datasets with known tissue-specific gene expression changes. These tests showed that ZEOGS could reliably identify the tissues affected, whereas only very few enriched terms to none were found in the random gene sets. Next we applied ZEOGS to microarray datasets of 24 and 72?h postfertilization zebrafish embryos treated with beclomethasone, a potent glucocorticoid. This analysis resulted in the identification of several anatomical terms related to glucocorticoid-responsive tissues, some of which were stage-specific. Our studies highlight the ability of ZEOGS to extract spatial information from datasets derived from whole embryos, indicating that ZEOGS could be a useful tool to automatically analyze gene expression pattern features of any large zebrafish gene set.

Marsico, Annalisa

2013-01-01

160

Analogies as Tools for Meaning Making in Elementary Science Education: How Do They Work in Classroom Settings?  

ERIC Educational Resources Information Center

|In this paper there is a critical overview of the role of analogies as tools for meaning making in science education, their advantages and disadvantages. Two empirical studies on the use of analogies in primary classrooms are discussed and analysed. In the first study, the "string circuit" analogy was used in the teaching of electric circuits…

Guerra-Ramos, Maria Teresa

2011-01-01

161

Classroom-Based Interventions and Teachers' Perceived Job Stressors and Confidence: Evidence from a Randomized Trial in Head Start Settings  

ERIC Educational Resources Information Center

|Preschool teachers' job stressors have received increasing attention but have been understudied in the literature. We investigated the impacts of a classroom-based intervention, the Chicago School Readiness Project (CSRP), on teachers' perceived job stressors and confidence, as indexed by their perceptions of job control, job resources, job…

Zhai, Fuhua; Raver, C. Cybele; Li-Grining, Christine

2011-01-01

162

Classroom-based interventions and teachers’ perceived job stressors and confidence: Evidence from a randomized trial in Head Start settings  

Microsoft Academic Search

Preschool teachers’ job stressors have received increasing attention but have been understudied in the literature. We investigated the impacts of a classroom-based intervention, the Chicago School Readiness Project (CSRP), on teachers’ perceived job stressors and confidence, as indexed by their perceptions of job control, job resources, job demands, and confidence in behavior management. Using a clustered randomized controlled trial (RCT)

Fuhua Zhai; C. Cybele Raver; Christine Li-Grining

2011-01-01

163

Science in the Classroom: Finding a Balance between Autonomous Exploration and Teacher-Led Instruction in Preschool Settings  

ERIC Educational Resources Information Center

|Research Findings: This paper reports on children's use of science materials in preschool classrooms during their free choice time. Baseline observations showed that children and teachers rarely spend time in the designated science area. An intervention was designed to "market" the science center by introducing children to 1 science tool, the…

Nayfeld, Irena; Brenneman, Kimberly; Gelman, Rochel

2011-01-01

164

Introduction to Statistical Methods to Analyze Large Data Sets: Principal Components Analysis  

NSDL National Science Digital Library

This Teaching Resource provides lecture notes, slides, and a problem set for a series of lectures from a course entitled “Systems Biology: Biomedical Modeling.” The materials are a lecture introducing the mathematical concepts behind principal components analysis (PCA). The lecture describes how to handle large data sets with correlation methods and unsupervised clustering with this popular method of analysis, PCA.

Neil R. Clark (New York;Mount Sinai School of Medicine REV); Avi Ma'ayan (New York;Mount Sinai School of Medicine REV)

2011-09-13

165

Qsar investigation of a large data set for fish, algae and Daphnia toxicity  

Microsoft Academic Search

A large data set containing values for fish, algae and Daphnia toxicity for more than 2000 chemicals and mixtures was investigated. The data set was taken from the New Chemicals Data Base of the European Union [hosted by the European Chemicals Bureau, Joint Research Centre, European Commission (http:\\/\\/ecb.jrc.it)]. The data are submitted by industry, according to the requirements of EU

I. Lessigiarska; A. P. Worth; B. Sokull-Klüttgen; S. Jeram; J. C. Dearden; T. I. Netzeva; M. T. D. Cronin

2004-01-01

166

FONZIE: An optimized pipeline for minisatellite marker discovery and primer design from large sequence data sets  

Microsoft Academic Search

BACKGROUND: Micro-and minisatellites are among the most powerful genetic markers known to date. They have been used as tools for a large number of applications ranging from gene mapping to phylogenetic studies and isolate typing. However, identifying micro-and minisatellite markers on large sequence data sets is often a laborious process. RESULTS: FONZIE was designed to successively 1) perform a search

Pascal Bally; Jonathan Grandaubert; Thierry Rouxel; Marie-Hélène Balesdent

2010-01-01

167

A framework for evaluation of deformable image registration spatial accuracy using large landmark point sets  

Microsoft Academic Search

Expert landmark correspondences are widely reported for evaluating deformable image registration (DIR) spatial accuracy. In this report, we present a framework for objective evaluation of DIR spatial accuracy using large sets of expert-determined landmark point pairs. Large samples (>1100) of pulmonary landmark point pairs were manually generated for five cases. Estimates of inter- and intra-observer variation were determined from repeated

Richard Castillo; Edward Castillo; Rudy Guerra; Valen E. Johnson; Travis McPhail; Amit K. Garg; Thomas Guerrero

2009-01-01

168

Socrates in the Modern Classroom: How Are Large Classes in Criminal Justice Being Taught?  

Microsoft Academic Search

As education budgets shrink and interest in criminal justice at the collegiate level expands, large classes are being implemented in colleges and universities that traditionally have offered only small ones. If increasing criminal justice class sizes are inevitable, it is crucial that we gain an understanding of how large classes are currently taught and the extent to which these teaching

Melissa Schaefer Morabito; Richard R. Bennett

2006-01-01

169

Issues in Estimating Program Effects and Studying Implementation in Large-Scale Educational Experiments: The Case of a Connected Classroom Technology Program  

ERIC Educational Resources Information Center

|Using data from a nationwide, large-scale experimental study of the effects of a connected classroom technology on student learning in algebra (Owens et al., 2004), this dissertation focuses on challenges that can arise in estimating treatment effects in educational field experiments when samples are highly heterogeneous in terms of various…

Shin, Hye Sook

2009-01-01

170

A method for generating large-scale terrain based on image set  

Microsoft Academic Search

Large-scale virtual terrain has broadly been used in many fields, such as battlefield simulation, video game, films, GIS etc. Based on analyzing existing algorithms of creating virtual terrains, this paper presents a novel algorithm to synthesize large-scale virtual terrain from an image set. Firstly, many realistic terrain-blocks are generated by processing images properly. Then, based on definition of radial weight

Ruibin Zhao; Jidong Wang; Bin Yang; Mingyong Pang

2010-01-01

171

Objective-Setting in a Large Industrial Firm - Case Study in Steel  

Microsoft Academic Search

No theory or analysis, only some very general conclusions of a case study are presented here. The subject seems appropriate at this time since it covers the objective-setting of a large industrial firm, with particular emphasis on large-scale plant control systems. Three of the authors represent three distinct functional units of a steel company, i.e., planning and engineering, production, and

Kan Chen; Terence Dancy; Olin Gochenour; E. Y. Kung

1967-01-01

172

Taking Energy to the Physics Classroom from the Large Hadron Collider at CERN  

ERIC Educational Resources Information Center

|In 2008, the greatest experiment in history began. When in full operation, the Large Hadron Collider (LHC) at CERN will generate the greatest amount of information that has ever been produced in an experiment before. It will also reveal some of the most fundamental secrets of nature. Despite the enormous amount of information available on this…

Cid, Xabier; Cid, Ramon

2009-01-01

173

Taking Energy to the Physics Classroom from the Large Hadron Collider at CERN  

ERIC Educational Resources Information Center

In 2008, the greatest experiment in history began. When in full operation, the Large Hadron Collider (LHC) at CERN will generate the greatest amount of information that has ever been produced in an experiment before. It will also reveal some of the most fundamental secrets of nature. Despite the enormous amount of information available on this…

Cid, Xabier; Cid, Ramon

2009-01-01

174

Clickers in College Classrooms: Fostering Learning with Questioning Methods in Large Lecture Classes  

ERIC Educational Resources Information Center

|What can be done to promote student-instructor interaction in a large lecture class? One approach is to use a personal response system (or "clickers") in which students press a button on a hand-held remote control device corresponding to their answer to a multiple choice question projected on a screen, then see the class distribution of answers…

Mayer, Richard E.; Stull, Andrew; DeLeeuw, Krista; Almeroth, Kevin; Bimber, Bruce; Chun, Dorothy; Bulger, Monica; Campbell, Julie; Knight, Allan; Zhang, Hangjin

2009-01-01

175

Clickers in college classrooms: Fostering learning with questioning methods in large lecture classes  

Microsoft Academic Search

What can be done to promote student–instructor interaction in a large lecture class? One approach is to use a personal response system (or “clickers”) in which students press a button on a hand-held remote control device corresponding to their answer to a multiple choice question projected on a screen, then see the class distribution of answers on a screen, and

Richard E. Mayer; Andrew Stull; Krista DeLeeuw; Kevin Almeroth; Bruce Bimber; Dorothy Chun; Monica Bulger; Julie Campbell; Allan Knight; Hangjin Zhang

2009-01-01

176

A Conceptual Analysis of Standard Setting in Large-Scale Assessments. Research Report 94-3.  

ERIC Educational Resources Information Center

Elements of arbitrariness in the standard setting process are explored, and an alternative to the use of cut scores is presented. The first part of the paper analyzes the use of cut scores in large-scale assessments, discussing three different functions: (1) cut scores define the qualifications used in assessments; (2) they simplify the reporting…

van der Linden, Wim J.

177

A parallel, distributed algorithm for relational frequent pattern discovery from very large data sets  

Microsoft Academic Search

The amount of data produced by ubiquitous computing ap- plications is quickly growing, due to the pervasive presence of small de- vices endowed with sensing, computing and communication capabilities. Heterogeneity and strong interdependence, which characterize 'ubiqui- tous data', require a (multi-)relational approach to their analysis. How- ever, relational data mining algorithms do not scale well and very large data sets

Annalisa Appice; Michelangelo Ceci; Antonio Turi; Donato Malerba

2011-01-01

178

Correcting systematic effects in a large set of photometric light curves  

Microsoft Academic Search

We suggest a new algorithm to remove systematic effects in a large set of light curves obtained by a photometric survey. The algorithm can remove systematic effects, such as those associated with atmospheric extinction, detector efficiency, or point spread function changes over the detector. The algorithm works without any prior knowledge of the effects, as long as they linearly appear

O. Tamuz; T. Mazeh; S. Zucker

2005-01-01

179

Classification of large data sets with mixture models via sufficient EM  

Microsoft Academic Search

For the classification of very large data sets with a mixture model approach a two-step strategy for the estimation of the mixture is proposed. In the first step data are scaled down using compression techniques. Data compression consists of clustering the single observations into a medium number of groups and the representation of each group by a prototype, i.e. a

P. M. Steiner; M. Hudec

2007-01-01

180

Interactive Web-Based Map: Applications to Large Data Sets in the Geosciences  

Microsoft Academic Search

Current advances in computer hardware, information technology and data collection techniques have produced very large data sets in a wide variety of scientific and engineering disciplines. We must harness this opportunity to visualize and extract useful information from geophysical and geological data. We have taken the task of data mining by implementing a map-like approach over a web server for

Zachary A. Garbow; Nicholas R. Olson; David A. Yuen; John M. Boggs

2001-01-01

181

Comparative assessment of large-scale data sets of protein-protein interactions  

Microsoft Academic Search

Comprehensive protein-protein interaction maps promise to reveal many aspects of the complex regulatory network underlying cellular function. Recently, large-scale approaches have predicted many new protein interactions in yeast. To measure their accuracy and potential as well as to identify biases, strengths and weaknesses, we compare the methods with each other and with a reference set of previously reported protein interactions.

Christian von Mering; Roland Krause; Berend Snel; Michael Cornell; Stephen G. Oliver; Peer Bork

2002-01-01

182

Functional Connectivity: The Principal-Component Analysis of Large (PET) Data Sets  

Microsoft Academic Search

Summary: The distributed brain systems associated with performance of a verbal fluency task were identified in a nondirected correlational analysis of neurophysiological data obtained with positron tomography. This analysis used a recursive principal-component analysis developed specifically for large data sets. This analysis is interpreted in terms of functional connectivity, defined as the temporal correlation of a neurophysiological index measured in

K. J. Friston; C. D. Frith; P. F. Liddle; R. S. J. Frackowiak

1993-01-01

183

Data discretization for novel resource discovery in large medical data sets.  

PubMed Central

This paper is motivated by the problems of dealing with large data sets in information retrieval. The authors suggest an information retrieval framework based on mathematical principles to organize and permit end-user manipulation of a retrieval set. By adjusting through the interface the weights and types of relationships between query and set members, it is possible to expose unanticipated, novel relationships between the query/document pair. The retrieval set as a whole is parsed into discrete concept-oriented subsets (based on within-set similarity measures) and displayed on screen as interactive "graphic nodes" in an information space, distributed at first based on the vector model (similarity measure of set to query). The result is a visualized map wherein it is possible to identify main concept regions and multiple sub-regions as dimensions of the same data. Users may examine the membership within sub-regions. Based on this framework, a data visualization user interface was designed to encourage users to work with the data on multiple levels to find novel relationships between the query and retrieval set members. Space constraints prohibit addressing all aspects of this project.

Benoit, G.; Andrews, J. E.

2000-01-01

184

Setting the Stage for Developing Pre-service Teachers' Conceptions of Good Science Teaching: The role of classroom videos  

NASA Astrophysics Data System (ADS)

This paper reports findings about a curriculum innovation conducted at The University of Hong Kong. A CD-ROM consisting of videos of two lessons by different teachers demonstrating exemplary science teaching was used to elicit conceptions of good science teaching of student-teachers enrolled for the 1-year Postgraduate Diploma in Education at several stages during the programme. It was found that the videos elicited student-teachers’ conceptions and had impact on those conceptions prior to the commencement of formal instruction. It has extended student-teachers’ awareness of alternative teaching methods and approaches not experienced in their own schooling, broadened their awareness of different classroom situations, provided proof of existence of good practices, and prompted them to reflect on their current preconceptions of good science teaching. In several ways, the videos acted as a catalyst in socializing the transition of student-teachers from the role of student to the role of teacher.

Wong, Siu Ling; Yung, Benny Hin Wai; Cheng, Man Wai; Lam, Kwok Leung; Hodson, Derek

2006-01-01

185

Accelerated similarity searching and clustering of large compound sets by geometric embedding and locality sensitive hashing  

PubMed Central

Motivation: Similarity searching and clustering of chemical compounds by structural similarities are important computational approaches for identifying drug-like small molecules. Most algorithms available for these tasks are limited by their speed and scalability, and cannot handle today's large compound databases with several million entries. Results: In this article, we introduce a new algorithm for accelerated similarity searching and clustering of very large compound sets using embedding and indexing (EI) techniques. First, we present EI-Search as a general purpose similarity search method for finding objects with similar features in large databases and apply it here to searching and clustering of large compound sets. The method embeds the compounds in a high-dimensional Euclidean space and searches this space using an efficient index-aware nearest neighbor search method based on locality sensitive hashing (LSH). Second, to cluster large compound sets, we introduce the EI-Clustering algorithm that combines the EI-Search method with Jarvis–Patrick clustering. Both methods were tested on three large datasets with sizes ranging from about 260 000 to over 19 million compounds. In comparison to sequential search methods, the EI-Search method was 40–200 times faster, while maintaining comparable recall rates. The EI-Clustering method allowed us to significantly reduce the CPU time required to cluster these large compound libraries from several months to only a few days. Availability: Software implementations and online services have been developed based on the methods introduced in this study. The online services provide access to the generated clustering results and ultra-fast similarity searching of the PubChem Compound database with subsecond response time. Contact: thomas.girke@ucr.edu Supplementary information: Supplementary data are available at Bioinformatics online.

Cao, Yiqun; Jiang, Tao; Girke, Thomas

2010-01-01

186

Strategies for MCR image analysis of large hyperspectral data-sets  

PubMed Central

Polymer microarrays are a key enabling technology for high throughput materials discovery. In this study, multivariate image analysis, specifically multivariate curve resolution (MCR), is applied to the hyperspectral time of flight secondary ion mass spectroscopy (ToF-SIMS) data from eight individual microarray spots. Rather than analysing the data individually, the data-sets are collated and analysed as a single large data-set. Desktop computing is not a practical method for undertaking MCR analysis of such large data-sets due to the constraints of memory and computational overhead. Here, a distributed memory High-Performance Computing facility (HPC) is used. Similar to what is achieved using MCR analysis of individual samples, the results from this consolidated data-set allow clear identification of the substrate material; furthermore, specific chemistries common to different spots are also identified. The application of the HPC facility to the MCR analysis of ToF-SIMS hyperspectral data-sets demonstrates a potential methodology for the analysis of macro-scale data without compromising spatial resolution (data ‘binning’). Copyright © 2012 John Wiley & Sons, Ltd.

Scurr, David J; Hook, Andrew L; Burley, Jonathan A; Williams, Philip M; Anderson, Daniel G; Langer, Robert C; Davies, Martyn C; Alexander, Morgan R

2013-01-01

187

An Analysis Framework Addressing the Scale and Legibility of Large Scientific Data Sets  

SciTech Connect

Much of the previous work in the large data visualization area has solely focused on handling the scale of the data. This task is clearly a great challenge and necessary, but it is not sufficient. Applying standard visualization techniques to large scale data sets often creates complicated pictures where meaningful trends are lost. A second challenge, then, is to also provide algorithms that simplify what an analyst must understand, using either visual or quantitative means. This challenge can be summarized as improving the legibility or reducing the complexity of massive data sets. Fully meeting both of these challenges is the work of many, many PhD dissertations. In this dissertation, we describe some new techniques to address both the scale and legibility challenges, in hope of contributing to the larger solution. In addition to our assumption of simultaneously addressing both scale and legibility, we add an additional requirement that the solutions considered fit well within an interoperable framework for diverse algorithms, because a large suite of algorithms is often necessary to fully understand complex data sets. For scale, we present a general architecture for handling large data, as well as details of a contract-based system for integrating advanced optimizations into a data flow network design. We also describe techniques for volume rendering and performing comparisons at the extreme scale. For legibility, we present several techniques. Most noteworthy are equivalence class functions, a technique to drive visualizations using statistical methods, and line-scan based techniques for characterizing shape.

Childs, H R

2006-11-20

188

Extensions of parallel coordinates for interactive exploration of large multi-timepoint data sets.  

PubMed

Parallel coordinate plots (PCPs) are commonly used in information visualization to provide insight into multi-variate data. These plots help to spot correlations between variables. PCPs have been successfully applied to unstructured datasets up to a few millions of points. In this paper, we present techniques to enhance the usability of PCPs for the exploration of large, multi-timepoint volumetric data sets, containing tens of millions of points per timestep. The main difficulties that arise when applying PCPs to large numbers of data points are visual clutter and slow performance, making interactive exploration infeasible. Moreover, the spatial context of the volumetric data is usually lost. We describe techniques for preprocessing using data quantization and compression, and for fast GPU-based rendering of PCPs using joint density distributions for each pair of consecutive variables, resulting in a smooth, continuous visualization. Also, fast brushing techniques are proposed for interactive data selection in multiple linked views, including a 3D spatial volume view. These techniques have been successfully applied to three large data sets: Hurricane Isabel (Vis'04 contest), the ionization front instability data set (Vis'08 design contest), and data from a large-eddy simulation of cumulus clouds. With these data, we show how PCPs can be extended to successfully visualize and interactively explore multi-timepoint volumetric datasets with an order of magnitude more data points. PMID:18988994

Blaas, Jorik; Botha, Charl P; Post, Frits H

189

Extensions to the k-Means Algorithm for Clustering Large Data Sets with Categorical Values  

Microsoft Academic Search

The k-means algorithm is well known for its efficiency in clustering large data sets. However, working only on numeric values\\u000a prohibits it from being used to cluster real world data containing categorical values. In this paper we present two algorithms\\u000a which extend the k-means algorithm to categorical domains and domains with mixed numeric and categorical values. The k-modes\\u000a algorithm uses

Zhexue Huang

1998-01-01

190

The Distribution of Extremal Foreign Exchange Rate Returns in Extremely Large Data Sets  

Microsoft Academic Search

This study is basedonanexceptionally large and automatically #ltered data set containing mostof the quoted prices on Reuters over 7 years. We employ semi#parametric extremal analysis. A biasreduction is attainedbybootstrapping on resamples. The empirical results demonstrate the existenceof the unconditional second moment of the distribution but the non#convergence of the fourth mo#ment. Studies of cross#rates among European Monetary System currencies show

Michel M. Dacorogna; Ulrich A. Muller; Olivier V. Pictet; Casper G. De Vries

1995-01-01

191

Rehabilitative Management of Oropharyngeal Dysphagia in Acute Care Settings: Data from a Large Italian Teaching Hospital  

Microsoft Academic Search

A high incidence of oropharyngeal dysphagia (OD) in acute-care settings has been reported; however, no data on its management\\u000a are found in the literature. Here we report the experience with rehabilitative management of OD in a large Italian hospital.\\u000a The characteristics of inpatients with OD during 2004 have been studied prospectively. For each patient, demographic data,\\u000a the department referring the

Antonio Schindler; Elena Vincon; Elena Grosso; Anna Maria Miletto; Rosalba Di Rosa; Oskar Schindler

2008-01-01

192

Multiplex amplification enabled by selective circularization of large sets of genomic DNA fragments  

Microsoft Academic Search

We present a method to specifically select large sets of DNA sequences for parallel amplification by PCR using target-specific oligonucleotide constructs, so-called selectors. The selectors are oligonucleotide duplexes with single-stranded target-complementary end-sequences that are linked by a general sequence motif. In the selection process, a pool of selectors is combined with denatured restriction digested DNA. Each selector hybridizes to its

Fredrik Dahl; Mats Gullberg; Johan Stenberg; Ulf Landegren; Mats Nilsson

2005-01-01

193

Moving Large Data Sets Over High-Performance Long Distance Networks  

SciTech Connect

In this project we look at the performance characteristics of three tools used to move large data sets over dedicated long distance networking infrastructure. Although performance studies of wide area networks have been a frequent topic of interest, performance analyses have tended to focus on network latency characteristics and peak throughput using network traffic generators. In this study we instead perform an end-to-end long distance networking analysis that includes reading large data sets from a source file system and committing large data sets to a destination file system. An evaluation of end-to-end data movement is also an evaluation of the system configurations employed and the tools used to move the data. For this paper, we have built several storage platforms and connected them with a high performance long distance network configuration. We use these systems to analyze the capabilities of three data movement tools: BBcp, GridFTP, and XDD. Our studies demonstrate that existing data movement tools do not provide efficient performance levels or exercise the storage devices in their highest performance modes. We describe the device information required to achieve high levels of I/O performance and discuss how this data is applicable in use cases beyond data movement performance.

Hodson, Stephen W [ORNL; Poole, Stephen W [ORNL; Ruwart, Thomas [ORNL; Settlemyer, Bradley W [ORNL

2011-04-01

194

The gradient boosting algorithm and random boosting for genome-assisted evaluation in large data sets.  

PubMed

In the next few years, with the advent of high-density single nucleotide polymorphism (SNP) arrays and genome sequencing, genomic evaluation methods will need to deal with a large number of genetic variants and an increasing sample size. The boosting algorithm is a machine-learning technique that may alleviate the drawbacks of dealing with such large data sets. This algorithm combines different predictors in a sequential manner with some shrinkage on them; each predictor is applied consecutively to the residuals from the committee formed by the previous ones to form a final prediction based on a subset of covariates. Here, a detailed description is provided and examples using a toy data set are included. A modification of the algorithm called "random boosting" was proposed to increase predictive ability and decrease computation time of genome-assisted evaluation in large data sets. Random boosting uses a random selection of markers to add a subsequent weak learner to the predictive model. These modifications were applied to a real data set composed of 1,797 bulls genotyped for 39,714 SNP. Deregressed proofs of 4 yield traits and 1 type trait from January 2009 routine evaluations were used as dependent variables. A 2-fold cross-validation scenario was implemented. Sires born before 2005 were used as a training sample (1,576 and 1,562 for production and type traits, respectively), whereas younger sires were used as a testing sample to evaluate predictive ability of the algorithm on yet-to-be-observed phenotypes. Comparison with the original algorithm was provided. The predictive ability of the algorithm was measured as Pearson correlations between observed and predicted responses. Further, estimated bias was computed as the average difference between observed and predicted phenotypes. The results showed that the modification of the original boosting algorithm could be run in 1% of the time used with the original algorithm and with negligible differences in accuracy and bias. This modification may be used to speed the calculus of genome-assisted evaluation in large data sets such us those obtained from consortiums. PMID:23102953

González-Recio, O; Jiménez-Montero, J A; Alenda, R

2012-10-24

195

Classroom Acoustics  

MedlinePLUS

... Information for the Public › Hearing and Balance Classroom Acoustics A student's ability to hear and understand what ... reverberation time. Who is affected by poor classroom acoustics? All children are affected by poor classroom acoustics, ...

196

Distributed Computation of the knn Graph for Large High-Dimensional Point Sets  

PubMed Central

High-dimensional problems arising from robot motion planning, biology, data mining, and geographic information systems often require the computation of k nearest neighbor (knn) graphs. The knn graph of a data set is obtained by connecting each point to its k closest points. As the research in the above-mentioned fields progressively addresses problems of unprecedented complexity, the demand for computing knn graphs based on arbitrary distance metrics and large high-dimensional data sets increases, exceeding resources available to a single machine. In this work we efficiently distribute the computation of knn graphs for clusters of processors with message passing. Extensions to our distributed framework include the computation of graphs based on other proximity queries, such as approximate knn or range queries. Our experiments show nearly linear speedup with over one hundred processors and indicate that similar speedup can be obtained with several hundred processors.

Plaku, Erion; Kavraki, Lydia E.

2009-01-01

197

Qsar investigation of a large data set for fish, algae and Daphnia toxicity.  

PubMed

A large data set containing values for fish, algae and Daphnia toxicity for more than 2000 chemicals and mixtures was investigated. The data set was taken from the New Chemicals Data Base of the European Union [hosted by the European Chemicals Bureau, Joint Research Centre, European Commission (http://ecb.jrc.it)]. The data are submitted by industry, according to the requirements of EU Council Directive 67/548/EEC as amended for the seventh time by EU Council Directive 92/32/EEC. The toxicities of neutral chemicals, salts, metal complexes, as well as chemical mixtures were extracted. A baseline effect was demonstrated by chemicals known to act by a narcotic mechanism of action, i.e., a relationship was observed between the toxicity and the logarithm of the octanol-water partition coefficient (log P). However, the prediction of the toxicity of more reactive chemicals was found to require the use of additional descriptors. PMID:15669699

Lessigiarska, I; Wortha, A P; Sokull-Klüttgen, B; Jeram, S; Dearden, J C; Netzeva, T I; Cronin, M T D

198

Do Mentally Handicapped Adults Transfer Cognitive Skills from the Instrumental Enrichment Classroom to Other Situations or Settings?  

ERIC Educational Resources Information Center

|The study found that transfer of training by mentally handicapped adults receiving Feuerstein's Instrumental Enrichment program could not be demonstrated in clients' workshop or job placement (far transfer) settings. Transfer was demonstrated on specific tasks designed to measure cognitive abilities developed by the program (near transfer). (DB)|

Bachor, Dan G.

1988-01-01

199

A practical, bioinformatic workflow system for large data sets generated by next-generation sequencing  

PubMed Central

Transcriptomics (at the level of single cells, tissues and/or whole organisms) underpins many fields of biomedical science, from understanding the basic cellular function in model organisms, to the elucidation of the biological events that govern the development and progression of human diseases, and the exploration of the mechanisms of survival, drug-resistance and virulence of pathogens. Next-generation sequencing (NGS) technologies are contributing to a massive expansion of transcriptomics in all fields and are reducing the cost, time and performance barriers presented by conventional approaches. However, bioinformatic tools for the analysis of the sequence data sets produced by these technologies can be daunting to researchers with limited or no expertise in bioinformatics. Here, we constructed a semi-automated, bioinformatic workflow system, and critically evaluated it for the analysis and annotation of large-scale sequence data sets generated by NGS. We demonstrated its utility for the exploration of differences in the transcriptomes among various stages and both sexes of an economically important parasitic worm (Oesophagostomum dentatum) as well as the prediction and prioritization of essential molecules (including GTPases, protein kinases and phosphatases) as novel drug target candidates. This workflow system provides a practical tool for the assembly, annotation and analysis of NGS data sets, also to researchers with a limited bioinformatic expertise. The custom-written Perl, Python and Unix shell computer scripts used can be readily modified or adapted to suit many different applications. This system is now utilized routinely for the analysis of data sets from pathogens of major socio-economic importance and can, in principle, be applied to transcriptomics data sets from any organism.

Cantacessi, Cinzia; Jex, Aaron R.; Hall, Ross S.; Young, Neil D.; Campbell, Bronwyn E.; Joachim, Anja; Nolan, Matthew J.; Abubucker, Sahar; Sternberg, Paul W.; Ranganathan, Shoba; Mitreva, Makedonka; Gasser, Robin B.

2010-01-01

200

Supporting Classroom Activities with the BSUL System  

Microsoft Academic Search

This paper presents the integration of ubiquitous computing systems into classroom settings, in order to provide basic support for classrooms and field activities. We have developed web application components using Java technology and configured a classroom with wireless network access and a web camera for our purposes. In this classroom, the students interact among each other and with the professor

Hiroaki Ogata; Nobuji A. Saito; Rosa G. J. Paredes; Gerardo Ayala San Martin; Yoneo Yano

2008-01-01

201

Supporting Classroom Activities with the BSUL Environment  

Microsoft Academic Search

In this paper we present our ongoing research about the integration of ubiquitous computing systems into classroom settings, in order to give basic support for some classroom and field activities. We have developed some web application components using Java technology and configured a classroom with wireless network access and a web camera for our purposes. In this classroom the students

Nobuji A. Saito; Hiroaki Ogata; Rosa G. J. Paredes; Yoneo Yano; Gerardo Ayala San Martin

2005-01-01

202

Supporting Classroom Activities with the BSUL System  

ERIC Educational Resources Information Center

|This paper presents the integration of ubiquitous computing systems into classroom settings, in order to provide basic support for classrooms and field activities. We have developed web application components using Java technology and configured a classroom with wireless network access and a web camera for our purposes. In this classroom, the…

Ogata, Hiroaki; Saito, Nobuji A.; Paredes J., Rosa G.; San Martin, Gerardo Ayala; Yano, Yoneo

2008-01-01

203

Large-scale similarity search profiling of ChEMBL compound data sets.  

PubMed

A large-scale similarity search investigation has been carried out on 266 well-defined compound activity classes extracted from the ChEMBL database. The analysis was performed using two widely applied two-dimensional (2D) fingerprints that mark opposite ends of the current performance spectrum of these types of fingerprints, i.e., MACCS structural keys and the extended connectivity fingerprint with bond diameter four (ECFP4). For each fingerprint, three nearest neighbor search strategies were applied. On the basis of these search calculations, a similarity search profile of the ChEMBL database was generated. Overall, the fingerprint search campaign was surprisingly successful. In 203 of 266 test cases (?76%), a compound recovery rate of at least 50% was observed with at least the better performing fingerprint and one search strategy. The similarity search profile also revealed several general trends. For example, fingerprint searching was often characterized by an early enrichment of active compounds in database selection sets. In addition, compound activity classes have been categorized according to different similarity search performance levels, which helps to put the results of benchmark calculations into perspective. Therefore, a compendium of activity classes falling into different search performance categories is provided. On the basis of our large-scale investigation, the performance range of state-of-the-art 2D fingerprinting has been delineated for compound data sets directed against a wide spectrum of pharmaceutical targets. PMID:21728295

Heikamp, Kathrin; Bajorath, Jürgen

2011-07-14

204

A Technique for Moving Large Data Sets over High-Performance Long Distance Networks  

SciTech Connect

In this paper we look at the performance characteristics of three tools used to move large data sets over dedicated long distance networking infrastructure. Although performance studies of wide area networks have been a frequent topic of interest, performance analyses have tended to focus on network latency characteristics and peak throughput using network traffic generators. In this study we instead perform an end-to-end long distance networking analysis that includes reading large data sets from a source file system and committing the data to a remote destination file system. An evaluation of end-to-end data movement is also an evaluation of the system configurations employed and the tools used to move the data. For this paper, we have built several storage platforms and connected them with a high performance long distance network configuration. We use these systems to analyze the capabilities of three data movement tools: BBcp, GridFTP, and XDD. Our studies demonstrate that existing data movement tools do not provide efficient performance levels or exercise the storage devices in their highest performance modes.

Settlemyer, Bradley W [ORNL; Dobson, Jonathan D [ORNL; Hodson, Stephen W [ORNL; Kuehn, Jeffery A [ORNL; Poole, Stephen W [ORNL; Ruwart, Thomas [ORNL

2011-01-01

205

Multiple Imputation With Large Data Sets: A Case Study of the Children's Mental Health Initiative  

PubMed Central

Multiple imputation is an effective method for dealing with missing data, and it is becoming increasingly common in many fields. However, the method is still relatively rarely used in epidemiology, perhaps in part because relatively few studies have looked at practical questions about how to implement multiple imputation in large data sets used for diverse purposes. This paper addresses this gap by focusing on the practicalities and diagnostics for multiple imputation in large data sets. It primarily discusses the method of multiple imputation by chained equations, which iterates through the data, imputing one variable at a time conditional on the others. Illustrative data were derived from 9,186 youths participating in the national evaluation of the Community Mental Health Services for Children and Their Families Program, a US federally funded program designed to develop and enhance community-based systems of care to meet the needs of children with serious emotional disturbances and their families. Multiple imputation was used to ensure that data analysis samples reflect the full population of youth participating in this program. This case study provides an illustration to assist researchers in implementing multiple imputation in their own data.

Azur, Melissa; Frangakis, Constantine; Leaf, Philip

2009-01-01

206

Litho-kinematic facies model for large landslide deposits in arid settings  

SciTech Connect

Reconnaissance field studies of six large landslide deposits in the S. Basin and Range suggest that a set of characteristic features is common to the deposits of large landslides in an arid setting. These include a coarse boulder cap, an upper massive zone, a lower disrupted zone, and a mixed zone overlying disturbed substrate. The upper massive zone is dominated by crackel breccia. This grades downward into a lower disrupted zone composed of a more matrix-rich breccia that is internally sheared, intruded by clastic dikes, and often contains a cataclasite layer at its base. An underlying discontinuous mixed zone is composed of material from the overlying breccia mixed with material entrained from the underlying substrate. Bedding in the substrate sometimes displays folding and contortion that die out downward. The authors work suggests a spatial zonation of these characteristic features within many landslide deposits. In general, clastic dikes, the basal cataclasite, and folding in the substrate are observed mainly in distal parts of landslides. In most cases, total thickness, thickness of the basal disturbed and mixed zones, and the degree of internal shearing increase distally, whereas maximum clast size commonly decreases distally. Zonation of these features is interpreted to result from kinematics of emplacement that cause generally increased deformation in the distal regions of the landslide.

Yarnold, J.C.; Lombard, J.P.

1989-04-01

207

Contamination in the MACHO data set and the puzzle of Large Magellanic Cloud microlensing  

NASA Astrophysics Data System (ADS)

In a recent series of three papers, Belokurov, Evans & Le Du and Evans & Belokurov reanalysed the MACHO collaboration data and gave alternative sets of microlensing events and an alternative optical depth to microlensing towards the Large Magellanic Cloud (LMC). Although these authors examined less than 0.2 per cent of the data, they reported that by using a neural net program they had reliably selected a better (and smaller) set of microlensing candidates. Estimating the optical depth from this smaller set, they claimed that the MACHO collaboration overestimated the optical depth by a significant factor and that the MACHO microlensing experiment is consistent with lensing by known stars in the Milky Way and LMC. As we show below, the analysis by these authors contains several errors, and as a result their conclusions are incorrect. Their efficiency analysis is in error, and since they did not search through the entire MACHO data set, they do not know how many microlensing events their neural net would find in the data nor what optical depth their method would give. Examination of their selected events suggests that their method misses low signal-to-noise ratio events and thus would have lower efficiency than the MACHO selection criteria. In addition, their method is likely to give many more false positives (non-lensing events identified as lensing). Both effects would increase their estimated optical depth. Finally, we note that the EROS discovery that LMC event 23 is a variable star reduces the MACHO collaboration estimates of optical depth and the Macho halo fraction by around 8 per cent, and does open the question of additional contamination.

Griest, Kim; Thomas, Christian L.

2005-05-01

208

The Large Synoptic Survey Telescope and Foundations for Data Exploitation of Petabyte Data Sets  

SciTech Connect

The next generation of imaging surveys in astronomy, such as the Large Synoptic Survey Telescope (LSST), will require multigigapixel cameras that can process enormous amounts of data read out every few seconds. This huge increase in data throughput (compared to megapixel cameras and minute- to hour-long integrations of today's instruments) calls for a new paradigm for extracting the knowledge content. We have developed foundations for this new approach. In this project, we have studied the necessary processes for extracting information from large time-domain databases systematics. In the process, we have produced significant scientific breakthroughs by developing new methods to probe both the elusive time and spatial variations in astrophysics data sets from the SuperMACHO (Massive Compact Halo Objects) survey, the Lowell Observatory Near-Earth Object Search (LONEOS), and the Taiwanese American Occultation Survey (TAOS). This project continues to contribute to the development of the scientific foundations for future wide-field, time-domain surveys. Our algorithm and pipeline development has provided the building blocks for the development of the LSST science software system. Our database design and performance measures have helped to size and constrain LSST database design. LLNL made significant contributions to the foundations of the LSST, which has applications for large-scale imaging and data-mining activities at LLNL. These developments are being actively applied to the previously mentioned surveys producing important scientific results that have been released to the scientific community and more continue to be published and referenced, enhancing LLNL's scientific stature.

Cook, K H; Nikolaev, S; Huber, M E

2007-02-26

209

Caught you: threats to confidentiality due to the public release of large-scale genetic data sets  

Microsoft Academic Search

BACKGROUND: Large-scale genetic data sets are frequently shared with other research groups and even released on the Internet to allow for secondary analysis. Study participants are usually not informed about such data sharing because data sets are assumed to be anonymous after stripping off personal identifiers. DISCUSSION: The assumption of anonymity of genetic data sets, however, is tenuous because genetic

Matthias Wjst

2010-01-01

210

Impact of problem-based learning in a large classroom setting: student perception and problem-solving skills  

NSDL National Science Digital Library

This article describes a problem-based learning (PBL) approach (using tutorless groups) that was introduced as a supplement to standard didactic lectures in University of British Columbia Okanagan undergraduate biochemistry classes consisting of 45ÃÂ85 students. PBL was chosen as an effective method to assist students in learning biochemical and physiological processes. By monitoring student attendance and using informal and formal surveys, we demonstrated that PBL has a significant positive impact on student motivation to attend and participate in the course work.

Andis Klegeris (University of British Columbia); Heather Hurren (University of British Columbia)

2011-12-01

211

FONZIE: An optimized pipeline for minisatellite marker discovery and primer design from large sequence data sets  

PubMed Central

Background Micro-and minisatellites are among the most powerful genetic markers known to date. They have been used as tools for a large number of applications ranging from gene mapping to phylogenetic studies and isolate typing. However, identifying micro-and minisatellite markers on large sequence data sets is often a laborious process. Results FONZIE was designed to successively 1) perform a search for markers via the external software Tandem Repeat Finder, 2) exclude user-defined specific genomic regions, 3) screen for the size and the percent matches of each relevant marker found by Tandem Repeat Finder, 4) evaluate marker specificity (i.e., occurrence of the marker as a single copy in the genome) using BLAST2.0, 5) design minisatellite primer pairs via the external software Primer3, and 6) check the specificity of each final PCR product by BLAST. A final file returns to users all the results required to amplify markers. A biological validation of the approach was performed using the whole genome sequence of the phytopathogenic fungus Leptosphaeria maculans, showing that more than 90% of the minisatellite primer pairs generated by the pipeline amplified a PCR product, 44.8% of which showed agarose-gel resolvable polymorphism between isolates. Segregation analyses confirmed that the polymorphic minisatellites corresponded to single-locus markers. Conclusion FONZIE is a stand-alone and user-friendly application developed to minimize tedious manual operations, reduce errors, and speed up the search for efficient minisatellite and microsatellite markers departing from whole-genome sequence data. This pipeline facilitates the integration of data and provides a set of specific primer sequences for PCR amplification of single-locus markers. FONZIE is freely downloadable at: http://www.versailles-grignon.inra.fr/bioger/equipes/leptosphaeria_maculans/outils_d_analyses/fonzie

2010-01-01

212

Pre-Service Teachers and Classroom Authority  

ERIC Educational Resources Information Center

|This study examined the classroom practices of five pre-service teachers from three secondary schools in a large southeastern state. Through classroom observations, survey responses, reviews of refection logs, and focus-group interview responses, we centered on the issue of developing classroom authority as a means to effective classroom

Pellegrino, Anthony M.

2010-01-01

213

Prototype Tool for Interaction with Large Spectral Line GBT Data Sets  

NASA Astrophysics Data System (ADS)

The Green Bank Telescope is often used for collecting large amounts of data. The software that is currently used for data analysis -GBTIDL- unfortunately displays one spectrum at a time. Under the supervision of Bob Garwood, I created a prototype tool that would make the analysis of large spectral line GBT data sets more efficient. The new program, GBTV, instead displays a 2D plot (or image) in which signal intensity is plotted as color intensity. The image is built such that the record number is on one axis, while the channel is on the other. We already have implemented ways to interact with the plot directly (e.g. flag chunks of data), yet the GBTV interface allows for much flexibility. Furthermore, since the number of channels always exceeds the number of pixels on the screen, we integrated a separate routine so that it does not zoom out on an image in a classical manner; instead, each pixel in the new image is a regional maximum of the original. This was done in order to facilitate the detection of weak signals or possible RFI. Currently, the new software can work well as an accessory for GBTIDL. Further work can be done so as to integrate more features, that would make it possible for GBTV to become a standalone data analysis software.

Mocanu, Delia; NRAO

2009-12-01

214

Objective and subjective measures of the pharmacodynamic effects of Adderall in the treatment of children with ADHD in a controlled laboratory classroom setting.  

PubMed

In a randomized double-blind crossover study of children with attention deficit hyperactivity disorder (ADHD), the time course effects of four doses of Adderall (5, 10, 15, and 20 mg) and an inactive (placebo) control, and an active (Ritalin) control were evaluated. A laboratory classroom setting was established in which subjective (teacher ratings of deportment and attention) and objective (scores on math tests) measurements were taken every 1.5 hours across the day. In addition to significant time and dose effects of Adderall, significant time-of-day effects were documented in the placebo condition for the subjective measure of deportment and objective measures of performance. Regression analyses were used to estimate the magnitude of these baseline effects. Correlations across time were used to evaluate the test-retest reliability of each measure in the face of these time-dependent placebo effects. After placebo/time adjustments, within-subject correlations between pairs of measures were used to evaluate the validity of the math test as a measure of response to stimulant medication. PMID:9564199

Swanson, J; Wigal, S; Greenhill, L; Browne, R; Waslick, B; Lerner, M; Williams, L; Flynn, D; Agler, D; Crowley, K L; Fineberg, E; Regino, R; Baren, M; Cantwell, D

1998-01-01

215

Galaxy Evolution Insights from Spectral Modeling of Large Data Sets from the Sloan Digital Sky Survey  

SciTech Connect

This thesis centers on the use of spectral modeling techniques on data from the Sloan Digital Sky Survey (SDSS) to gain new insights into current questions in galaxy evolution. The SDSS provides a large, uniform, high quality data set which can be exploited in a number of ways. One avenue pursued here is to use the large sample size to measure precisely the mean properties of galaxies of increasingly narrow parameter ranges. The other route taken is to look for rare objects which open up for exploration new areas in galaxy parameter space. The crux of this thesis is revisiting the classical Kennicutt method for inferring the stellar initial mass function (IMF) from the integrated light properties of galaxies. A large data set ({approx} 10{sup 5} galaxies) from the SDSS DR4 is combined with more in-depth modeling and quantitative statistical analysis to search for systematic IMF variations as a function of galaxy luminosity. Galaxy H{alpha} equivalent widths are compared to a broadband color index to constrain the IMF. It is found that for the sample as a whole the best fitting IMF power law slope above 0.5 M{sub {circle_dot}} is {Lambda} = 1.5 {+-} 0.1 with the error dominated by systematics. Galaxies brighter than around M{sub r,0.1} = -20 (including galaxies like the Milky Way which has M{sub r,0.1} {approx} -21) are well fit by a universal {Lambda} {approx} 1.4 IMF, similar to the classical Salpeter slope, and smooth, exponential star formation histories (SFH). Fainter galaxies prefer steeper IMFs and the quality of the fits reveal that for these galaxies a universal IMF with smooth SFHs is actually a poor assumption. Related projects are also pursued. A targeted photometric search is conducted for strongly lensed Lyman break galaxies (LBG) similar to MS1512-cB58. The evolution of the photometric selection technique is described as are the results of spectroscopic follow-up of the best targets. The serendipitous discovery of two interesting blue compact dwarf galaxies is reported. These galaxies were identified by their extremely weak (< 150) [N {pi}] {lambda}6584 to H{alpha} emission line ratios. Abundance analysis from emission line fluxes reveals that these galaxies have gas phase oxygen abundances 12 + log(O/H) {approx} 7.7 to 7.9, not remarkably low, and near infrared imaging detects an old stellar population. However, the measured nitrogen to oxygen ratios log(N/O) < 1.7 are anomalously low for blue compact dwarf galaxies. These objects may be useful for understanding the chemical evolution of nitrogen.

Hoversten, Erik A.; /Johns Hopkins U.

2007-10-01

216

Measurement, visualization and analysis of extremely large data sets with a nanopositioning and nanomeasuring machine  

NASA Astrophysics Data System (ADS)

Nanopositioning and nanomeasuring machines (NPM machines) developed at the Ilmenau University of Technology allow the measurement of micro- and nanostructures with nanometer precision in a measurement volume of 25 mm × 25 mm × 5 mm (NMM-1) or 200 mm × 200 mm × 25 mm (NPMM-200). Various visual, tactile or atomic force sensors can all be used to measure specimens. Atomic force sensors have emerged as a powerful tool in nanotechnology. Large-scale AFM measurements are very time-consuming and in fact in a practical sense they are impossible over millimeter ranges due to low scanning speeds. A cascaded multi-sensor system can be used to implement a multi-scale measurement and testing strategy for nanopositioning and nanomeasuring machines. This approach involves capturing an overview image at the limit of optical resolution and automatically scanning the measured data for interesting test areas that are suitable for a higher-resolution measurement. These "fields of interest" can subsequently be measured in the same NPM machine using individual AFM sensor scans. The results involve extremely large data sets that cannot be handled by off-the-shelf software. Quickly navigating within terabyte-sized data files requires preprocessing to be done on the measured data to calculate intermediate images based on the principle of a visualization pyramid. This pyramid includes the measured data of the entire volume, prepared in the form of discrete measurement volumes (spatial tiles or cubes) with certain edge lengths at specific zoom levels. The functionality of the closed process chain is demonstrated using a blob analysis for automatically selecting regions of interest on the specimen. As expected, processing large amounts of data places particularly high demands on both computing power and the software architecture.

Birli, O.; Franke, K.-H.; Linß, G.; Machleidt, T.; Manske, E.; Schale, F.; Schwannecke, H.-C.; Sparrer, E.; Weiß, M.

2013-04-01

217

The Role of Personal Narrative in Constructing Classroom Curriculum  

ERIC Educational Resources Information Center

This article explores the nature of the author's classroom practice and provides insights about how he constructed and delivered classroom curriculum for the electrical apprenticeship classroom. In this article, the author defines classroom curriculum as the planned and guided learning experiences that take place in a classroom setting with…

Kouri, Donald A.

2005-01-01

218

Efficient algorithms for fast integration on large data sets from multiple sources  

PubMed Central

Background Recent large scale deployments of health information technology have created opportunities for the integration of patient medical records with disparate public health, human service, and educational databases to provide comprehensive information related to health and development. Data integration techniques, which identify records belonging to the same individual that reside in multiple data sets, are essential to these efforts. Several algorithms have been proposed in the literatures that are adept in integrating records from two different datasets. Our algorithms are aimed at integrating multiple (in particular more than two) datasets efficiently. Methods Hierarchical clustering based solutions are used to integrate multiple (in particular more than two) datasets. Edit distance is used as the basic distance calculation, while distance calculation of common input errors is also studied. Several techniques have been applied to improve the algorithms in terms of both time and space: 1) Partial Construction of the Dendrogram (PCD) that ignores the level above the threshold; 2) Ignoring the Dendrogram Structure (IDS); 3) Faster Computation of the Edit Distance (FCED) that predicts the distance with the threshold by upper bounds on edit distance; and 4) A pre-processing blocking phase that limits dynamic computation within each block. Results We have experimentally validated our algorithms on large simulated as well as real data. Accuracy and completeness are defined stringently to show the performance of our algorithms. In addition, we employ a four-category analysis. Comparison with FEBRL shows the robustness of our approach. Conclusions In the experiments we conducted, the accuracy we observed exceeded 90% for the simulated data in most cases. 97.7% and 98.1% accuracy were achieved for the constant and proportional threshold, respectively, in a real dataset of 1,083,878 records.

2012-01-01

219

An efficient out-of-core volume ray casting method for the visualization of large medical data sets  

NASA Astrophysics Data System (ADS)

Volume ray casting algorithm is widely recognized for high quality volume visualization. However, when rendering very large volume data sets, the original ray casting algorithm will lead to very inefficient random accesses in disk and make it very slowly to render the whole volume data set. In order to solve this problem, an efficient out-of-core volume ray casting method with a new out-of-core framework for processing large volume data sets based on consumer PC hardware is proposed in this paper. The new framework gives a transparent and efficient access to the volume data set cached in disk, while the new volume ray casting method minimizes the data exchange between hard disk and physical memory and performs comparatively fast high quality volume rendering. The experimental results indicate that the new method and framework are effective and efficient for the visualization of very large medical data sets.

Xue, Jian; Tian, Jie; Chen, Jian; Dai, Yakang

2007-03-01

220

Fitting parametric random effects models in very large data sets with application to VHA national data  

PubMed Central

Background With the current focus on personalized medicine, patient/subject level inference is often of key interest in translational research. As a result, random effects models (REM) are becoming popular for patient level inference. However, for very large data sets that are characterized by large sample size, it can be difficult to fit REM using commonly available statistical software such as SAS since they require inordinate amounts of computer time and memory allocations beyond what are available preventing model convergence. For example, in a retrospective cohort study of over 800,000 Veterans with type 2 diabetes with longitudinal data over 5 years, fitting REM via generalized linear mixed modeling using currently available standard procedures in SAS (e.g. PROC GLIMMIX) was very difficult and same problems exist in Stata’s gllamm or R’s lme packages. Thus, this study proposes and assesses the performance of a meta regression approach and makes comparison with methods based on sampling of the full data. Data We use both simulated and real data from a national cohort of Veterans with type 2 diabetes (n=890,394) which was created by linking multiple patient and administrative files resulting in a cohort with longitudinal data collected over 5 years. Methods and results The outcome of interest was mean annual HbA1c measured over a 5 years period. Using this outcome, we compared parameter estimates from the proposed random effects meta regression (REMR) with estimates based on simple random sampling and VISN (Veterans Integrated Service Networks) based stratified sampling of the full data. Our results indicate that REMR provides parameter estimates that are less likely to be biased with tighter confidence intervals when the VISN level estimates are homogenous. Conclusion When the interest is to fit REM in repeated measures data with very large sample size, REMR can be used as a good alternative. It leads to reasonable inference for both Gaussian and non-Gaussian responses if parameter estimates are homogeneous across VISNs.

2012-01-01

221

Data for the Classroom  

NSDL National Science Digital Library

The Data for the Classroom collection gathers datasets that have accompanying instructional materials or other pertinent information for using the dataset in a classroom setting for grades K-16. The data may be numerical, visual, maps, charts, tables or images. The data may be observational, remotely sensed or model data. The primary component is that there are materials supporting the use and understanding of the data either by educators or directly by students. Additionally, the dataset itself is desribed.

222

Classroom Management.  

ERIC Educational Resources Information Center

Reviews research on classroom management, focusing on behavior modification, group management, teacher effects, management training, and planning. Five types of management skills and six principles for effective classroom organization identified by researchers are suggested for application by teachers. (PGD)

Strother, Deborah Burnett

1985-01-01

223

Validation and evaluation of common large-area display set (CLADS) performance specification  

NASA Astrophysics Data System (ADS)

Battelle is under contract with Warner Robins Air Logistics Center to design a Common Large Area Display Set (CLADS) for use in multiple Command, Control, Communications, Computers, and Intelligence (C4I) applications that currently use 19- inch Cathode Ray Tubes (CRTs). Battelle engineers have built and fully tested pre-production prototypes of the CLADS design for AWACS, and are completing pre-production prototype displays for three other platforms simultaneously. With the CLADS design, any display technology that can be packaged to meet the form, fit, and function requirements defined by the Common Large Area Display Head Assembly (CLADHA) performance specification is a candidate for CLADS applications. This technology independent feature reduced the risk of CLADS development, permits life long technology insertion upgrades without unnecessary redesign, and addresses many of the obsolescence problems associated with COTS technology-based acquisition. Performance and environmental testing were performed on the AWACS CLADS and continues on other platforms as a part of the performance specification validation process. A simulator assessment and flight assessment were successfully completed for the AWACS CLADS, and lessons learned from these assessments are being incorporated into the performance specifications. Draft CLADS specifications were released to potential display integrators and manufacturers for review in 1997, and the final version of the performance specifications are scheduled to be released to display integrators and manufacturers in May, 1998. Initial USAF applications include replacements for the E-3 AWACS color monitor assembly, E-8 Joint STARS graphics display unit, and ABCCC airborne color display. Initial U.S. Navy applications include the E-2C ACIS display. For these applications, reliability and maintainability are key objectives. The common design will reduce the cost of operation and maintenance by an estimated $3.3M per year on E-3 AWACS alone. It is realistic to anticipate savings of over $30M per year as CLADS is implemented widely across DoD applications. As commonality and open systems interfaces begin to surface in DoD applications, the CLADS architecture can easily and cost effectively absorb the changes, and avoid COTS obsolescence issues.

Hermann, David J.; Gorenflo, Ronald L.

1998-09-01

224

Phylogenetic Approach Reveals That Virus Genotype Largely Determines HIV Set-Point Viral Load  

PubMed Central

HIV virulence, i.e. the time of progression to AIDS, varies greatly among patients. As for other rapidly evolving pathogens of humans, it is difficult to know if this variance is controlled by the genotype of the host or that of the virus because the transmission chain is usually unknown. We apply the phylogenetic comparative approach (PCA) to estimate the heritability of a trait from one infection to the next, which indicates the control of the virus genotype over this trait. The idea is to use viral RNA sequences obtained from patients infected by HIV-1 subtype B to build a phylogeny, which approximately reflects the transmission chain. Heritability is measured statistically as the propensity for patients close in the phylogeny to exhibit similar infection trait values. The approach reveals that up to half of the variance in set-point viral load, a trait associated with virulence, can be heritable. Our estimate is significant and robust to noise in the phylogeny. We also check for the consistency of our approach by showing that a trait related to drug resistance is almost entirely heritable. Finally, we show the importance of taking into account the transmission chain when estimating correlations between infection traits. The fact that HIV virulence is, at least partially, heritable from one infection to the next has clinical and epidemiological implications. The difference between earlier studies and ours comes from the quality of our dataset and from the power of the PCA, which can be applied to large datasets and accounts for within-host evolution. The PCA opens new perspectives for approaches linking clinical data and evolutionary biology because it can be extended to study other traits or other infectious diseases.

Alizon, Samuel; Yerly, Sabine; Hirschel, Bernard; Boni, Jurg; Shah, Cyril; Klimkait, Thomas; Furrer, Hansjakob; Rauch, Andri; Vernazza, Pietro L.; Bernasconi, Enos; Battegay, Manuel; Burgisser, Philippe; Telenti, Amalio; Gunthard, Huldrych F.; Bonhoeffer, Sebastian

2010-01-01

225

The use of reading instructional time by teachers in an urban balanced literacy setting  

Microsoft Academic Search

The purpose of this exploratory study was to document the nature of the time used for reading instruction provided by novice and expert teachers in an urban balanced literacy classroom setting. ^ The participants of this study were six volunteer female classroom teachers of literacy in a large urban elementary school, of which three were designated as experts and three

Geanine Pierro

2009-01-01

226

Using Large-Scale Classroom Research to Study Student Conceptual Learning in Mechanics and to Develop New Approaches to Learning  

NSDL National Science Digital Library

Microcomputer-based laboratory (MBL) tools and guided discovery curricula have been developed as an aid to all students, including the underprepared and underserved, in learning physical concepts. To guide this development, extensive work has been done to find useful measures of students' conceptual understanding that can be used in widely varying contexts. This paper focuses primarily on the evaluation of student conceptual understanding of mechanics (kinematics and dynamics) with an emphasis on Newton's 1st and 2nd laws in introductory courses in the university. Student understanding of mechanics is looked at before and after traditional instruction. It is examined before and after MBL curricula that are consciously designed to promote active and collaborative learning by students. The results show that the majority of students have difficulty learning essential physical concepts in the best of our traditional courses where students read textbooks, solve textbook problems, listen to well-prepared lectures, and do traditional laboratory activities. Students can, however, learn these fundamental concepts using MBL curricula and Interactive Lecture Demonstrations which have been based on extensive classroom research. Substantial evidence is given that student answers to the short answer questions in the Tools for Scientific Thinking Force and Motion Conceptual Evaluation provide a useful statistical means of evaluating students' beliefs and understandings about mechanics. Evidence for the hierarchical learning of velocity, acceleration, and force concepts is presented.

Thornton, Ronald K.

2006-12-07

227

Adapting Case-Based Teaching to Large Class Settings: An Action Research Approach  

Microsoft Academic Search

While literature points to significant benefits from using case-based teaching in accounting education, the extent to which these benefits can be obtained with large undergraduate classes is not evident. Using an action research approach, strategies for the use of case-based teaching in large classes at an Irish university were developed and evaluated. Insights into the nature of the challenges facing

John Doran; Margaret Healy; Maeve McCutcheon; Steve OCallaghan

2011-01-01

228

Design criteria and accuracy specifications for precise large-scale topographic surveys from sparse data sets  

Microsoft Academic Search

The purpose of this research is to develop design and accuracy criteria for large-scale topographic surveys. The large-scale topographic survey is a ‘sparse surface model’ consisting of sampling prescription, surface modeling algorithm, and partitioned terrain complexity. Predictable survey outcomes can be achieved by partitioning the site into unitary land forms such that the amplitude of resident terrain microform is less

James Arthur Elithorp

1999-01-01

229

Task Engagement and the Consistency of Pedagogical Controls: An Ecological Study of Differently Structured Classroom Settings. Urban Diversity Series, Number 57.  

ERIC Educational Resources Information Center

|Twenty children, one boy and one girl in each of ten second grade classrooms from four different experimental programs, were each observed over the course of a single school day. Each 30 second interval of approximately 80 hours of transcribed behavior stream observation was analyzed to determine whether the teacher, the learner, or the teacher…

Grannis, Joseph C.

230

How do students really feel about working in small groups? The role of student attitudes and behaviours in cooperative classroom settings  

Microsoft Academic Search

Abstract Based on the volumes,of research demonstrating the cognitive and affective benefits of cooperation, small group strategies are increasingly being implemented in classrooms. However, in order for learning to be enhanced in the small group environment, there has to be clearer understanding of the complex dynamics that operate when students work together. The purpose of this study was to investigate

Christina Kouros; Philip C. Abrami

231

The Impact of Brief Teacher Training on Classroom Management and Child Behavior in At-Risk Preschool Settings: Mediators and Treatment Utility  

ERIC Educational Resources Information Center

|Teachers from fourteen classrooms were randomly assigned to an adaptation of Incredible Years (IY) teacher training or to teacher training-as-usual. Observations were made of the behavior of 136 target preschool boys and girls nominated by teachers as having many or few conduct problems. Peer and teacher behavior were observed at baseline and…

Snyder, James; Low, Sabina; Schultz, Tara; Barner, Stacy; Moreno, Desirae; Garst, Meladee; Leiker, Ryan; Swink, Nathan; Schrepferman, Lynn

2011-01-01

232

History Matters: The Large Scale Landscape Setting of the Boulder Creek Critical Zone Observatory (Invited)  

NASA Astrophysics Data System (ADS)

The architecture of the critical zone depends upon the structural geologic and climatic history of a site. We document these controls in the vicinity of the Boulder Creek Critical Zone Observatory (BcCZO), and show that events in its geologic history reaching back to the Laramide have left a strong legacy in the landscape and its critical zone architecture. The Laramide orogeny brought crystalline >1Gyr rocks to the surface by motion along listric faults both east and west of the range crest. This manifests itself in the juxtaposition of crystalline rocks of the range against younger sedimentary rocks of the Denver Basin. More subtly, the rocks have also been subjected to significant strain upon passing through major bends and ramps in the thrust faults, leading to brittle cracking of the rocks. They therefore arrive in the near-surface pre-crushed. Post-Laramide evolution of the range resulted in reduction of relief within the crystalline core of the range, and construction of a sedimentary ramp built of weathered debris. Accumulation of sediment ended with deposition of the Ogallala formation and similar clastic sedimentary units derived from the crystalline core of the Rockies. Subsequent late Cenozoic abandonment of this depositional surface and significant exhumation of the western Great Plains resulted in the cutting out of a large wedge of the easily eroded sedimentary rocks. This exhumation event could result from either a change in the hydrologic system in the headwaters, or more likely from the climatically induced reduction in sediment supply from the crystalline range. Simple models show how the latter would generate a wedge-shaped exhumation pattern that is both deepest and widest against the range. The relevance to the BcCZO is two-fold. First, it may be a reduction in regolith production rate and/or grain size that promotes the exhumation of the western Plains. Second, the rapid exhumation adjacent to the range served as a drop in base level for all rivers draining the range, which in turn induced a wave of fluvial erosion that propagates into the range. All rivers draining the range display convexities reflecting the modern edge of this wave of incision. The knickzones of rivers with the highest drainage areas have bitten most deeply into the range. The landscape immediately adjacent to the river segments outboard of the knickzones has been rejuvenated. Hillslopes are steeper, are dominated by bedrock exposures and display regolith of variable thickness. Roughly simultaneously with the exhumation of the Plains, the upper drainages have been glaciated, repeatedly scouring the weathered carapace from the glacial troughs; 10Be concentrations in glacial polish suggest that >3 m of erosion occurred in the last glacial cycle. The BcCZO exploits this landscape history by addressing the differences in critical zone development in three settings in the landscape: the glacially scoured headwaters, the re-excited outer edge of the range adjacent to the major streams, and the landscape between these zones of excitement, in which slow post-Laramide decay of the landscape reigns.

Anderson, R. S.; Wobus, C. W.; Berlin, M. M.; Duehnforth, M.; Tucker, G. E.; Anderson, S. P.

2009-12-01

233

Is Our Classroom an Ecological Place?  

ERIC Educational Resources Information Center

|The essence of ecology is life and its diversity, integrity, openness and coexistence. When one contemplates and analyzes classroom from the perspective of ecology, classroom should contain open-ended and multiple goals instead of a single and pre-set goal; classroom is more flexible, allowing great diversity instead of being narrow-minded,…

Xia, Wang

2006-01-01

234

Flexible aircraft reduced-order LPV model generation from a set of large-scale LTI models  

Microsoft Academic Search

In the civilian aeronautical industry, flexible air- craft models are often built and validated at frozen flight and mass configurations. Unfortunately, these medium(large)-scale models derived from high fidelity numerical tools are generally not well adapted for simulation, control and analysis. In this pa- per, a methodology to derive a reduced-order Linear Parameter Varying (LPV) model from a set of medium(large)-scale

C. Poussot-Vassal; C. Roos

2011-01-01

235

Manufacturing physics: using large(r) data sets and physical insight to develop great products  

NASA Astrophysics Data System (ADS)

Early stage research does a fantastic job providing knowledge and proof-of-feasibility for new product concepts. However, the handful of data points required to validate a concept is typically insufficient to provide insight on the whole range of effects relevant to manufacturing the product. Moving to manufacturing brings larger data sets and variability; opportunistic analysis of these larger sets can yield better product design rules. In the early 2000s Corning developed an optical transmission fiber optimized to suppress stimulated Brillouin scattering (SBS). Analyzing the larger data set provided by the manufacturing environment using the same theoretical framework developed by the original researchers refined our understanding of how to improve SBS in optical fibers beyond what was known from our early efforts. This greater understanding allowed us to design better performing products.

Rosenblum, Steven

2011-03-01

236

Assessing the Conversational Classroom  

Microsoft Academic Search

Conventional wisdom states that the large lecture class is an ecient way to teach a common core of material to large numbers of introductory students. We questioned that model, and chose a required second-year course with en- rollments in the 60-120 range to test a classroom strategy that dispenses with the lecture entirely. Instead, each class session consists of a

William M. Waite; Michele H. Jackson; Amer Diwan

237

An efficient parallel approach for identifying protein families in large-scale metagenomic data sets  

Microsoft Academic Search

Metagenomics is the study of environmental microbial communities using state-of-the-art genomic tools. Recent advancements in high-throughput technologies have enabled the accumulation of large volumes of metagenomic data that was until a couple of years back was deemed impractical for generation. A primary bottleneck, however, is in the lack of scalable algorithms and open source software for large-scale data processing. In

Changjun Wu; Ananth Kalyanaraman

2008-01-01

238

Classroom Expernomics  

NSDL National Science Digital Library

The Classroom Expernomics site was jointly developed by Gregory Delemeester, Associate Professor of Economics, Marietta College, and John Neral, Associate Professor of Economics, Frostburg State University. This site features the Classroom Expernomics newsletter aimed at encouraging the "use of economic experiments as teaching tools for the classroom." The newsletter has been published twice a year since the spring of 1992; all current and previous issues are available at the web site. Each newsletter contains two or three articles by various professors profiling their use of economics experiments in the classroom.

1992-01-01

239

Large-Scale Disturbance Events in Terrestrial Ecosystems Detected using Global Satellite Data Sets  

NASA Astrophysics Data System (ADS)

Studies are being conducted to evaluate patterns in a 19-year record of global satellite observations of vegetation phenology from the Advanced Very High Resolution Radiometer (AVHRR), as a means to characterize large-scale ecosystem disturbance events and regimes. The fraction absorbed of photosynthetically active radiation (FPAR) by vegetation canopies worldwide has been computed at a monthly time interval from 1982 to 2000 and gridded at a spatial resolution of 8-km globally. Potential disturbance events were identified in the FPAR time series by locating anomalously low values (FPAR-LO) that lasted longer than 12 consecutive months at any 8-km pixel. We can find verifiable evidence of numerous disturbance types across North America, including major regional patterns of cold and heat waves, forest fires, tropical storms, and large-scale forest logging. Based on this analysis, an historical picture is emerging of periodic droughts and heat waves, possibly coupled with herbivorous insect outbreaks, as among the most important causes of ecosystem disturbance in North America. In South America, large areas of northeastern Brazil appear to have been impacted in the early 1990s by severe drought. Amazon tropical forest disturbance can be detected at large scales particularly in the mid 1990s. In Asia, large-scale disturbance events appear in the mid 1980s and the late 1990s across boreal and temperate forest zones, as well as in cropland areas of western India. In northern Europe and central Africa, large-scale forest disturbance appears in the mid 1990s.

Potter, C.; Tan, P.; Kumar, V.; Klooster, S.

2004-12-01

240

Information-theoretic tools for mining database structure from large data sets  

Microsoft Academic Search

Data design has been characterized as a process of arriving at a design that maximizes the information content of each piece of data (or equivalently, one that minimizes redundancy). Information content (or redundancy) is measured with respect to a prescribed model for the data, a model that is often expressed as a set of constraints. In this work, we consider

Periklis Andritsos; Renée J. Miller; Panayiotis Tsaparas

2004-01-01

241

Spatio-temporal Knowledge Discovery in Very Large METOC Data Sets  

Microsoft Academic Search

A system allowing for the efficient processing and viewing of dense METOC data sets stored in Network Common Data Format (netted) files is developed using advanced bitmap indexing. A method for netted data extraction and bitmap index creation is presented. Efficient geospatial range and pseudo-KNN queries are implemented. A two step filtering algorithm is shown to greatly enhance the speed

D. Marks; E. Ioup; J. Sample; M. Abdelguerfi; F. Qaddoura

2010-01-01

242

Detecting Motifs in a Large Data Set: Applying Probabilistic Insights to Motif Finding  

Microsoft Academic Search

We give a probabilistic algorithm for Consensus Sequence, a NP-complete subproblem of motif recognition, that can be described as follows: given set of l-length sequences, determine if there exists a sequence that has Hamming distance at most d from every sequence. We demonstrate that distance between a randomly selected majority sequence and a consensus sequence decreases as the size of

Christina Boucher; Daniel G. Brown

2009-01-01

243

A Controlled Trial of Active versus Passive Learning Strategies in a Large Group Setting  

ERIC Educational Resources Information Center

Objective: To compare the effects of active and didactic teaching strategies on learning- and process-oriented outcomes. Design: Controlled trial. Setting: After-hours residents' teaching session. Participants: Family and Community Medicine, Internal Medicine, and Pediatrics residents at two academic medical institutions. Interventions: We…

Haidet, Paul; Morgan, Robert O.; O'Malley, Kimberly; Moran, Betty Jeanne; Richards, Boyd F.

2004-01-01

244

Automatic Genre Classification Using Large High-Level Musical Feature Sets  

Microsoft Academic Search

This paper presents a system that extracts 109 musical features from symbolic recordings (MIDI, in this case) and uses them to classify the recordings by genre. The features used here are based on instrumentation, texture, rhythm, dynamics, pitch statistics, melody and chords. The classification is performed hierarchically using different sets of features at different levels of the hierarchy. Which features

Cory Mckay; Ichiro Fujinaga

2004-01-01

245

Using isovist views to study placement of large displays in natural settings  

Microsoft Academic Search

In this paper we present the concept of an isovist, derived from the architectural literature, and describe how isovists can help HCI researchers understand visibility in a physical environment. An isovist is defined as the set of all points visible in all directions from a given vantage point in space. The overlap in isovists from two or more locations can

Peter G. Scupelli; Sara B. Kiesler; Susan R. Fussell

2007-01-01

246

Classification of a large anticancer data set by adaptive fuzzy partition.  

PubMed

An Adaptive Fuzzy Partition (AFP) algorithm, derived from Fuzzy Logic concepts, was used to classify an anticancer data set, including about 1300 compounds subdivided into eight mechanisms of action. AFP classification builds relationships between molecular descriptors and bio-activities by dynamically dividing the descriptor hyperspace into a set of fuzzy subspaces. These subspaces are described by simple linguistic rules, from which scores ranging between 0 and 1 can be derived. The latter values define, for each compound, the degrees of membership of the different mechanisms analyzed. A particular attention was devoted to develop structure-activity relations that have a real utility. Then, well-defined and widely accepted protocols were used to validate the models by defining their robustness and prediction ability. More particularly, after selecting the most relevant descriptors with help of a genetic algorithm, a training set of 640 compounds was isolated by a rational procedure based on Self-Organizing Maps. The related AFP model was then validated with help of a validation set and, above all, of cross-validation and Y-randomization procedures. Good validation scores of about 80% were obtained, underlining the robustness of the model. Moreover, the prediction ability was evaluated with 374 test compounds that had not been used to establish the model and 77% of them were predicted correctly. PMID:15729856

Piclin, Nadège; Pintore, Marco; Wechman, Christophe; Chrétien, Jacques R

247

VARIATIONS OF LARGE SPECTRAL SET: TWO-DIMENSIONAL CORRELATION ANALYSIS OF LOADINGS SPECTRA OF PRINCIPAL COMPONENT ANALYSIS  

Technology Transfer Automated Retrieval System (TEKTRAN)

This work attempted to interpret the principle component loadings spectra of principle component analysis on large spectral data set with multi-variables by the use of two-dimensional (2D) correlation analysis. Three examples of visible/NIR spectra of chicken muscles under different conditions were...

248

Ssecrett and NeuroTrace: interactive visualization and analysis tools for large-scale neuroscience data sets.  

PubMed

Data sets imaged with modern electron microscopes can range from tens of terabytes to about one petabyte. Two new tools, Ssecrett and NeuroTrace, support interactive exploration and analysis of large-scale optical-and electron-microscopy images to help scientists reconstruct complex neural circuits of the mammalian nervous system. PMID:20650718

Jeong, Wan-Ki; Beyer, Johanna; Hadwiger, Markus; Blue, Rusty; Law, Charles; Vazquez-Reina, Amelio; Reid, R Clay; Lichtman, Jeff; Pfister, Hanspeter

249

Development and characterization of a large set of microsatellite markers in grapevine ( Vitis vinifera L.) suitable for multiplex PCR  

Microsoft Academic Search

Despite their numerous advantages, the use of microsatellites as genetic markers could be limited because of the low number of loci that can be simultaneously analysed per experiment. To increase the information per simple sequence repeat (SSR) assay in the grapevine, we developed a large set of new markers suitable for multiplexing and multi-loading. We produced microsatellite motif-enriched genomic libraries

Didier Merdinoglu; Giséle Butterlin; Lucie Bevilacqua; Vincent Chiquet; Anne-Françoise Adam-Blondon; Stéphane Decroocq

2005-01-01

250

Prediction of the adsorption capability onto activated carbon of a large data set of chemicals by local lazy regression method  

NASA Astrophysics Data System (ADS)

Accurate quantitative structure-property relationship (QSPR) models based on a large data set containing a total of 3483 organic compounds were developed to predict chemicals’ adsorption capability onto activated carbon in gas phrase. Both global multiple linear regression (MLR) method and local lazy regression (LLR) method were used to develop QSPR models. The results proved that LLR has prediction accuracy 10% higher than that of MLR model. By applying LLR method we can predict the test set (787 compounds) with Q 2 ext of 0.900 and root mean square error (RMSE) of 0.129. The accurate model based on this large data set could be useful to predict adsorption property of new compounds since such model covers a highly diverse structural space.

Lei, Beilei; Ma, Yimeng; Li, Jiazhong; Liu, Huanxiang; Yao, Xiaojun; Gramatica, Paola

2010-08-01

251

TSS: Efficient Term Set Search in Large Peer-to-Peer Textual Collections  

Microsoft Academic Search

Previous multikeyword search in DHT-based P2P systems often relies on multiple single keyword search operations, suffering from unacceptable traffic cost and poor accuracy. Precomputing term-set-based index can significantly reduce the cost but needs exponentially growing index size. Based on our observations that 1) queries are typically short and 2) users usually have limited interests, we propose a novel index pruning

Hanhua Chen; Jun Yan; Hai Jin; Yunhao Liu; Lionel M. Ni

2010-01-01

252

A comprehensive set of protein complexes in yeast: mining large scale protein-protein interaction screens  

Microsoft Academic Search

Motivation: The analysis of protein-protein interactions allows for detailed exploration of the cellular machinery. The biochemical purification of protein complexes followed by iden- tification of components by mass spectrometry is currently the method, which delivers the most reliable information—albeit that the data sets are still difficult to interpret. Consolidating individual experiments into protein com- plexes, especially for high-throughput screens, is

Roland Krause; Christian Von Mering; Peer Bork

2003-01-01

253

INFERENCE OF HIGHER-ORDER RELATIONSHIPS IN THE CYCADS FROM A LARGE CHLOROPLAST DATA SET  

Technology Transfer Automated Retrieval System (TEKTRAN)

The evolutionary relationships in many plant groups are not known. This study used a large amount of chloroplast DNA sequence data to reveal relationships in a particularily ancient order of non-flowering plants, the cycads (order Cycadales). The data provided strong support for the relationships ...

254

by chance enhancing interaction with large data sets through statistical sampling  

Microsoft Academic Search

The use of random algorithms in many areas of computer science has enabled the solution of otherwise intractable problems. In this paper we propose that random sampling can make the visualisation of large datasets both more computationally efficient and more perceptually effective. We review the explicit uses of randomness and the related deterministic techniques in the visualisation literature. We then

Alan Dix; Geoff Ellis

2002-01-01

255

Agenda-setting and The Political Ecology of Large Infrastructure Projects in Latin America  

Microsoft Academic Search

This paper analyses the complex interplay between the environmental acceptability of large infrastructure projects and other normative values that may influence policy decisions, such as 'social justice' and 'economic growth'. It explores how historical changes in policy ideas may determine if a project survives on the policy agenda, if it is moved up to the decision-agenda; and whether and how

J. Carlos Dominguez

256

yFS: A Journaling File System Design for Handling Large Data Sets with Reduced Seeking  

Microsoft Academic Search

In recent years, disk seek times have not improved commensurately with CPU performance, memory system performance, and disk transfer rates. Furthermore, many modern applications are making increasing use of large files. Traditional file system designs are limited in how they address these two trends. We present the design of a file system called yFS that consciously reduces disk seeking and

Zhihui Zhang; Kanad Ghose

2003-01-01

257

A procedure for preparing large sets of diatom slides from sediment cores  

Microsoft Academic Search

A procedure is described for making diatom microscopy slides from large numbers of sediment samples, simultaneously. The method uses small sediment samples, small test tubes, small amounts of hydrogen peroxide, no decantings, no centrifuging, and it requires no washing-up of glassware. It is, therefore, fast, cheap, gentle to the diatoms and needs little fume cupboard space.

Ingemar Renberg

1990-01-01

258

Goal Setting and Student Achievement: A Longitudinal Study  

ERIC Educational Resources Information Center

|The connection between goals and student motivation has been widely investigated in the research literature, but the relationship of goal setting and student achievement at the classroom level has remained largely unexplored. This article reports the findings of a 5-year quasi-experimental study examining goal setting and student achievement in…

Moeller, Aleidine J.; Theiler, Janine M.; Wu, Chaorong

2012-01-01

259

Classrooms as \\  

Microsoft Academic Search

One of the challenges facing us when we try to use commercial materials in the classrooms, i.e. video games at the moment, is to identify appropriate strategies of collaboration with designers, creators and distribution agents. Recently, we are working on a collaborative project with Electronics Arts to introduce specific video games to classrooms so that they can be used as

Pilar Lacasa; Rut Martínez; Laura Méndez; Sara Cortés

260

Outdoor Classrooms  

ERIC Educational Resources Information Center

|An outdoor classroom is the ideal vehicle for community involvement: Parents, native plant societies, 4-H, garden clubs, and master naturalists are all resources waiting to be tapped, as are local businesses offering support. If you enlist your community in the development and maintenance of your outdoor classroom, the entire community will…

Mayes, Valynda

2010-01-01

261

A Zebra in the Classroom.  

ERIC Educational Resources Information Center

|Describes the care and breeding of zebra fish, suggests various experiments and observations easily performed in a classroom setting, and provides some ideas to further student interest and exploration of these organisms. (DDR)|

Leake, Devin; Morvillo, Nancy

1998-01-01

262

A Zebra in the Classroom.  

ERIC Educational Resources Information Center

Describes the care and breeding of zebra fish, suggests various experiments and observations easily performed in a classroom setting, and provides some ideas to further student interest and exploration of these organisms. (DDR)

Leake, Devin; Morvillo, Nancy

1998-01-01

263

Confocal scanning beam laser microscope\\/macroscope: applications requiring large data sets  

Microsoft Academic Search

A new confocal scanning beam laser microscope\\/macroscope is described that combines the rapid scan of a scanning beam laser microscope with the large specimen capability of a scanning stage microscope. This instrument combines an infinity-corrected confocal scanning laser microscope with a scanning laser macroscope that uses a telecentric f*(theta) laser scan lens to produce a confocal imaging system with a

Arthur E. Dixon; Savvas Damaskinos; Alfonso Ribes; Eileen Seto; Marie-Claude Beland; Tetsu Uesaka; Brian Dalrymple; Sid P. Duttagupta; Philippe M. Fauchet

1995-01-01

264

Drama in the Classroom.  

ERIC Educational Resources Information Center

Drama in middle-school classrooms can provide action, experimentation, and exploration of character, motivation, and text. Because it provides expanded contexts for language learning in a cooperative social setting, drama has numerous educational benefits for young adolescents. Short drama activities for middle schoolers include story reading,…

Albert, Eleanor

1994-01-01

265

Tips from the Classroom.  

ERIC Educational Resources Information Center

Discusses setting up conversation tables on campus in cross-cultural interaction among native and nonnative speakers, presents ways to teach proverbs in the advanced classroom, describes how to use Aesop's fables to integrate all learning skills, tells how to teach make/do, and suggests ways to improve communicative skills for better accuracy and…

Shiffman, Doris Yaffe; And Others

1992-01-01

266

Elementary Resource Classroom Packet.  

ERIC Educational Resources Information Center

The materials in this resource kit were developed at a summer workshop to provide teachers with suggestions and specific classroom activities to promote sex equity attitudes in elementary school students. Among the products included in the kit are a set of ditto worksheets, for primary students, to reinforce their understanding of the book…

Jackson Public Schools, MI.

267

The Participatory Classroom.  

ERIC Educational Resources Information Center

|Describes the "Participation Classroom" model for foreign language learning which provides students with opportunities to participate in teaching, evaluating, and goal setting. Based on students' needs, this model provides a noncompetitive teamwork approach to achievement. This article outlines teacher's and students' roles in creating a…

Gaudiani, Claire L.

1981-01-01

268

Poetry in the Classroom.  

ERIC Educational Resources Information Center

These reprints from the "English Journal's" department, "Poetry in the Classroom," present successful approaches to teaching 22 poems. The poems are grouped under seven headings: "Poems from the Tradition,""The Creation,""The Carpe Diem Theme,""Where Shall Man Journey?""Symbolic Settings,""Poems for the Junior High School," and "Poems of our…

Petitt, Dorothy, Ed.

269

Clickenomics: Using a Classroom Response System to Increase Student Engagement in a Large-Enrollment Principles of Economics Course  

ERIC Educational Resources Information Center

|One of the most important challenges facing college instructors of economics is helping students engage. Engagement is particularly important in a large-enrollment Principles of Economics course, where it can help students achieve a long-lived understanding of how economists use basic economic ideas to look at the world. The author reports how…

Salemi, Michael K.

2009-01-01

270

Clickenomics: Using a Classroom Response System to Increase Student Engagement in a Large-Enrollment Principles of Economics Course  

ERIC Educational Resources Information Center

One of the most important challenges facing college instructors of economics is helping students engage. Engagement is particularly important in a large-enrollment Principles of Economics course, where it can help students achieve a long-lived understanding of how economists use basic economic ideas to look at the world. The author reports how…

Salemi, Michael K.

2009-01-01

271

Teaching Cell Biology in the Large-Enrollment Classroom: Methods to Promote Analytical Thinking and Assessment of Their Effectiveness  

ERIC Educational Resources Information Center

|A large-enrollment, undergraduate cellular biology lecture course is described whose primary goal is to help students acquire skill in the interpretation of experimental data. The premise is that this kind of analytical reasoning is not intuitive for most people and, in the absence of hands-on laboratory experience, will not readily develop…

Kitchen, Elizabeth; Bell, John D.; Reeve, Suzanne; Sudweeks, Richard R.; Bradshaw, William S.

2003-01-01

272

Using large clinical data sets to infer pathogenicity for rare copy number variants in autism cohorts  

PubMed Central

Copy number variants (CNVs) have a major role in the etiology of autism spectrum disorders (ASD), and several of these have reached statistical significance in case–control analyses. Nevertheless, current ASD cohorts are not large enough to detect very rare CNVs that may be causative or contributory (that is, risk alleles). Here, we use a tiered approach, in which clinically significant CNVs are first identified in large clinical cohorts of neurodevelopmental disorders (including but not specific to ASD), after which these CNVs are then systematically identified within well-characterized ASD cohorts. We focused our initial analysis on 48 recurrent CNVs (segmental duplication-mediated ‘hotspots') from 24 loci in 31?516 published clinical cases with neurodevelopmental disorders and 13?696 published controls, which yielded a total of 19 deletion CNVs and 11 duplication CNVs that reached statistical significance. We then investigated the overlap of these 30 CNVs in a combined sample of 3955 well-characterized ASD cases from three published studies. We identified 73 deleterious recurrent CNVs, including 36 deletions from 11 loci and 37 duplications from seven loci, for a frequency of 1 in 54; had we considered the ASD cohorts alone, only 58 CNVs from eight loci (24 deletions from three loci and 34 duplications from five loci) would have reached statistical significance. In conclusion, until there are sufficiently large ASD research cohorts with enough power to detect very rare causative or contributory CNVs, data from larger clinical cohorts can be used to infer the likely clinical significance of CNVs in ASD.

Moreno-De-Luca, D; Sanders, S J; Willsey, A J; Mulle, J G; Lowe, J K; Geschwind, D H; State, M W; Martin, C L; Ledbetter, D H

2013-01-01

273

A hybrid structure for the storage and manipulation of very large spatial data sets  

USGS Publications Warehouse

The map data input and output problem for geographic information systems is rapidly diminishing with the increasing availability of mass digitizing, direct spatial data capture and graphics hardware based on raster technology. Although a large number of efficient raster-based algorithms exist for performing a wide variety of common tasks on these data, there are a number of procedures which are more efficiently performed in vector mode or for which raster mode equivalents of current vector-based techniques have not yet been developed. This paper presents a hybrid spatial data structure, named the ?vaster' structure, which can utilize the advantages of both raster and vector structures while potentially eliminating, or greatly reducing, the need for raster-to-vector and vector-to-raster conversion. Other advantages of the vaster structure are also discussed.

Peuquet, Donna J.

1982-01-01

274

Extraction of tacit knowledge from large ADME data sets via pairwise analysis.  

PubMed

Pharmaceutical companies routinely collect data across multiple projects for common ADME endpoints. Although at the time of collection the data is intended for use in decision making within a specific project, knowledge can be gained by data mining the entire cross-project data set for patterns of structure-activity relationships (SAR) that may be applied to any project. One such data mining method is pairwise analysis. This method has the advantage of being able to identify small structural changes that lead to significant changes in activity. In this paper, we describe the process for full pairwise analysis of our high-throughput ADME assays routinely used for compound discovery efforts at Pfizer (microsomal clearance, passive membrane permeability, P-gp efflux, and lipophilicity). We also describe multiple strategies for the application of these transforms in a prospective manner during compound design. Finally, a detailed analysis of the activity patterns in pairs of compounds that share the same molecular transformation reveals multiple types of transforms from an SAR perspective. These include bioisosteres, additives, multiplicatives, and a type we call switches as they act to either turn on or turn off an activity. PMID:21616672

Keefer, Christopher E; Chang, George; Kauffman, Gregory W

2011-05-06

275

Data Mining on Large Data Set for Predicting Salmon Spawning Habitat  

SciTech Connect

Hydraulic properties related to river flow affect salmon spawning habitat. Accurate prediction of salmon spawning habitat and understanding the influential properties on the spawning behavior are of great interest for hydroelectric dam management. Previous research predicted salmon spawning habitat through deriving river specific spawning suitability indices and employing a function estimate method like logistic regression on several static river flow related properties and had some success. The objective of this study was two-fold. First dynamic river flow properties associated with upstream dam operation were successfully derived from a huge set of time series of both water velocity and water depth for about one fifth of a million habitat cells through principal component analysis (PCA) using nonlinear iterative partial least squares (NIPLAS). The inclusion of dynamic variables in the models greatly improved the model prediction. Secondly, nine machine learning methods were applied to the data and it was found that decision tree and rule induction methods were generally outperformed usually used logistic regression. Specifically random forest, an advanced decision tree algorithm, provided unanimous better results. Over-prediction problem in previous studies were greatly alleviated.

Xie, YuLong; Murray, Christopher J.; Hanrahan, Timothy P.; Geist, David R.

2008-07-01

276

USING DATA MINING TO ANALYZE LARGE DATA SETS IN HIGHER EDUCATION RESEARCH: AN EXAMPLE OF PREDICTION WITH NSOPF: 99  

Microsoft Academic Search

The recent advancement in computing technology, availability of low-cost storage devices, and popularity of Internet have\\u000a empowered data acquisition that is substantially different from the traditional approach (Hand, Mannila, and Smyth, 2001;Wegman,\\u000a 1995). This trend has influenced higher education in many aspects, one of which is the increasing number of large data sets\\u000a as secondary data sources for academic research.

Yonghong Jade Xu

277

WebViz:A Web-based Collaborative Interactive Visualization System for large-Scale Data Sets  

Microsoft Academic Search

WebViz is a web-based application designed to conduct collaborative, interactive visualizations of large data sets for multiple users, allowing researchers situated all over the world to utilize the visualization services offered by the University of Minnesota's Laboratory for Computational Sciences and Engineering (LCSE). This ongoing project has been built upon over the last 3 1\\/2 years .The motivation behind WebViz

D. A. Yuen; E. McArthur; R. M. Weiss; J. Zhou; B. Yao

2010-01-01

278

Computation of large systems with an economic basis set: a density functional study on proton-bound carboxylic acid clusters  

Microsoft Academic Search

We show that first-principle calculations with an economic basis set can predict reliable geometric structures and accurate vibrational frequencies for small proton-bound carboxylic acid clusters. This leads to the potential of using limited computational resources to study large molecular systems. Further applications using density functional (DFT) theory on a series of proton-bound formic and acetic acid clusters have found reasonable

R. Q Zhang; N. B Wong; S. T Lee; R. S Zhu; K. L Han

2000-01-01

279

Star Show Classroom Activity  

NSDL National Science Digital Library

In this lesson from Math Machines, the class will "plan and conduct a simulated astronomical observing session to photgraph a variety of star types." The instructor will set up several "stars" around the classroom, and students will then set up a telescope location and estimate the altitude and azimuth to photograph each star. A participant handout (including worksheet) and facilitator notes are made available for download in DOC file format. Links to calculator programs are also included.

Thomas, Fred

2011-11-03

280

Accompanying Readings & Tools for Enhancing Classroom Approaches for Addressing Barriers to Learning: Classroom-Focused Enabling.  

ERIC Educational Resources Information Center

|This publication presents a set of readings and tools that accompany the education modules "Enhancing Classroom Approaches to Addressing Barriers to Learning: Classroom-Focused Enabling." Together, they delineate a preservice/inservice teacher preparation curriculum covering how regular classrooms and schools should be designed to ensure all…

California Univ., Los Angeles. Center for Mental Health in Schools.

281

Twelve- to 14-month-old infants can predict single-event probability with large set sizes.  

PubMed

Previous research has revealed that infants can reason correctly about single-event probabilities with small but not large set sizes (Bonatti, 2008; Teglas et al., 2007). The current study asks whether infants can make predictions regarding single-event probability with large set sizes using a novel procedure. Infants completed two trials: A preference trial to determine whether they preferred pink or black lollipops and a test trial where infants saw two jars, one containing mostly pink lollipops and another containing mostly black lollipops. The experimenter removed one occluded lollipop from each jar and placed them in two separate opaque cups. Seventy-eight percent of infants searched in the cup that contained a lollipop from the jar with a higher proportion of their preferred color object, significantly better than chance. Thus infants can reason about single-event probabilities with large set sizes in a choice paradigm, and contrary to most findings in the infant literature, the prediction task used here appears a more sensitive measure than the standard looking-time task. PMID:20712746

Denison, Stephanie; Xu, Fei

2010-09-01

282

The conversational classroom  

Microsoft Academic Search

Concepts taught in large, lower-division computer science courses are carefully explained in standard textbooks. Thus we hypothesized that the classroom experience should not consist primarily of a restatement of those explanations by the professor. Instead, it should provide an opportunity for the students to learn through a process of conversation among themselves and with the professor. We were able to

William M. Waite; Michele H. Jackson; Amer Diwan

2003-01-01

283

Tips from the Classroom.  

ERIC Educational Resources Information Center

Four short articles are combined: "Adding Discourse-Level Practice to Sentence-Level Exercises" (Eric S. Nelson); "Presenting Picture Books in the ESL Classroom" (Lijun Shen); "Role Playing in a Large Class" (Ellen Rosen); and "Calvin and Hobbes and Other Icons of Americana" (Daniel J. Conrad). (Contains seven references.) (LB)

TESOL Journal, 1993

1993-01-01

284

Inclusive Classrooms  

NSDL National Science Digital Library

Five Standards-based strategies for successful inclusion of special-needs students in the secondary science classroom are described in this article. Use a multisensory approach; encourage collaboration among students; provide specific expectations and ass

Alexakos, Konstantinos

2001-03-01

285

Classroom Catapults  

NSDL National Science Digital Library

"Wow, our plastic load flew 540 centimeters! This is so cool!" An interdisciplinary unit on catapults was responsible for the excitement and enthusiasm generated in the author's classroom. In their social studies class, students learned about the Middle A

Villano, Diane D.

2001-02-01

286

Ready, Set, Science  

NSDL National Science Digital Library

This book is designed to acknowledge and support the work of teachers while explaining the implications of new knowledge for classroom practice. Ready, Set, Science! is an account of recent research into teaching and learning science. It is designed to help practitioners make sense of new research and use this research to inform their classroom practice.

Michaels, Sarah; Shouse, Andrew W.; Schweingruber, Heidi A.

2008-01-27

287

Assessing weak hydrogen binding on Ca+ centers: An accurate many-body study with large basis sets  

NASA Astrophysics Data System (ADS)

Weak H2 physisorption energies present a significant challenge to even the best correlated theoretical many-body methods. We use the phaseless auxiliary-field quantum Monte Carlo method to accurately predict the binding energy of Ca+- 4H2. Attention has recently focused on this model chemistry to test the reliability of electronic structure methods for H2 binding on dispersed alkaline earth metal centers. A modified Cholesky decomposition is implemented to realize the Hubbard-Stratonovich transformation efficiently with large Gaussian basis sets. We employ the largest correlation-consistent Gaussian type basis sets available, up to cc-pCV5Z for Ca, to accurately extrapolate to the complete basis limit. The calculated potential energy curve exhibits binding with a double-well structure.

Purwanto, Wirawan; Krakauer, Henry; Virgus, Yudistira; Zhang, Shiwei

2011-10-01

288

Bioinformatics analysis of large-scale viral sequences: from construction of data sets to annotation of a phylogenetic tree.  

PubMed

Due to a significant decrease in the cost of DNA sequencing, the number of sequences submitted to the public databases has dramatically increased in recent years. Efficient analysis of these data sets may lead to a significant understanding of the nature of pathogens such as bacteria, viruses, parasites, etc. However, this has raised questions about the efficacy of currently available algorithms for the study of pathogen evolution and construction of phylogenetic trees. While the advanced algorithms and corresponding programs are being developed, it is crucial to optimize the available ones in order to cope with the current need. The protocol presented in this study is optimized using a number of strategies currently being proposed for handling large-scale DNA sequence data sets, and offers a highly efficacious and accurate method for computing phylogenetic trees with limited computer resources. The protocol may take up to 36 h for construction and annotation of a final tree of about 20,000 sequences. PMID:23314574

Munir, Muhammad

2013-01-01

289

Using simulated annealing to solve the classroom assignment problem  

Microsoft Academic Search

The classroom (or hotel rooms, final exams, etc.) assigning problem consists of assigning a set of school classes that meet at different time, to a set of classroom. Any two classes will not be able to meet at the same time in an specific classroom. At the same time, it will not be able to assign any class to two

H. Martinez-Alfaro; J. Minero; G. E. Alanis; N. A. Leal; I. G. Avila

1996-01-01

290

The Physics Classroom: Ohm's Law  

NSDL National Science Digital Library

This interactive tutorial on Ohm's Law, part of The Physics Classroom tutorial collection, provides a conceptual foundation for understanding one of the most powerful formulas in physics. Multiple circuit diagrams and tables illustrate the relationships among voltage, current, and resistance before users explore the mathematics. The author includes two quizzes for users to gauge their own understanding and perform simple calculations related to resistance. This page is part of The Physics Classroom, a comprehensive set of interactive tutorials, labs, and simulations for students of introductory physics. The Physics Classroom is one of the ComPADRE digital library collections.

Henderson, Tom

2010-06-22

291

A grammar-based distance metric enables fast and accurate clustering of large sets of 16S sequences  

PubMed Central

Background We propose a sequence clustering algorithm and compare the partition quality and execution time of the proposed algorithm with those of a popular existing algorithm. The proposed clustering algorithm uses a grammar-based distance metric to determine partitioning for a set of biological sequences. The algorithm performs clustering in which new sequences are compared with cluster-representative sequences to determine membership. If comparison fails to identify a suitable cluster, a new cluster is created. Results The performance of the proposed algorithm is validated via comparison to the popular DNA/RNA sequence clustering approach, CD-HIT-EST, and to the recently developed algorithm, UCLUST, using two different sets of 16S rDNA sequences from 2,255 genera. The proposed algorithm maintains a comparable CPU execution time with that of CD-HIT-EST which is much slower than UCLUST, and has successfully generated clusters with higher statistical accuracy than both CD-HIT-EST and UCLUST. The validation results are especially striking for large datasets. Conclusions We introduce a fast and accurate clustering algorithm that relies on a grammar-based sequence distance. Its statistical clustering quality is validated by clustering large datasets containing 16S rDNA sequences.

2010-01-01

292

Technology classrooms at Penn State  

Microsoft Academic Search

The success of the technology classroom at Penn State is largely due to a tradition of faculty-staff strategic planning. The 1991-94 Strategic Plan for Academic Computing—the work of the University-Wide Faculty Advisory Committee on Academic Computing—identified the support of faculty in the use of instructional technology in the classroom as one of its top priorities.

Charles T. Morrow; Judith V. Boettcher

1994-01-01

293

Changing Classroom Environments in Urban Middle Schools  

Microsoft Academic Search

This study involved three phases. First, we developed and validated the Elementary and Middle School Inventory of Classroom\\u000a Environments (ICE) for assessing upper primary and middle school (Grades 6–8) students' perceived and preferred classroom\\u000a environment. Second, typical classroom environments in an urban setting were described based on quantitative and qualitative\\u000a data, including differences between the perceptions of students of different

Becky B. Sinclair; Barry J. Fraser

2002-01-01

294

Classroom Notes  

ERIC Educational Resources Information Center

|In this issue's "Classroom Notes" section, the following papers are discussed: (1) "Constructing a line segment whose length is equal to the measure of a given angle" (W. Jacob and T. J. Osler); (2) "Generating functions for the powers of Fibonacci sequences" (D. Terrana and H. Chen); (3) "Evaluation of mean and variance integrals without…

International Journal of Mathematical Education in Science and Technology, 2007

2007-01-01

295

Smart Classroom  

ERIC Educational Resources Information Center

What makes a classroom "smart"? Presentation technologies such as projectors, document cameras, and LCD panels clearly fit the bill, but when considering other technologies for teaching, learning, and developing content, the possibilities become limited only by the boundaries of an institution's innovation. This article presents 32 best practices…

Kelly, Rhea, Ed.

2006-01-01

296

Classroom Notes  

ERIC Educational Resources Information Center

In this issue's "Classroom Notes" section, the following papers are discussed: (1) "Constructing a line segment whose length is equal to the measure of a given angle" (W. Jacob and T. J. Osler); (2) "Generating functions for the powers of Fibonacci sequences" (D. Terrana and H. Chen); (3) "Evaluation of mean and variance integrals without…

International Journal of Mathematical Education in Science and Technology, 2007

2007-01-01

297

Rethinking the Christian Studies Classroom: Reflections on the Dynamics of Teaching Religion in Southern Public Universities  

ERIC Educational Resources Information Center

An extended set of conversations conducted by three religious studies faculty teaching at large public universities in the Southern United States spurred these reflections on how their institutional locations inflected issues such as the cultural expectations students bring to the classroom, how these expectations interact with the evolving…

Gravett, Sandie; Hulsether, Mark; Medine, Carolyn

2011-01-01

298

Rethinking the Christian Studies Classroom: Reflections on the Dynamics of Teaching Religion in Southern Public Universities  

ERIC Educational Resources Information Center

|An extended set of conversations conducted by three religious studies faculty teaching at large public universities in the Southern United States spurred these reflections on how their institutional locations inflected issues such as the cultural expectations students bring to the classroom, how these expectations interact with the evolving…

Gravett, Sandie; Hulsether, Mark; Medine, Carolyn

2011-01-01

299

"Just Don't": The Suppression and Invitation of Dialogue in the Mathematics Classroom  

ERIC Educational Resources Information Center

|Responding to concerns raised by grade 11 mathematics students, we examined a broad set of mathematics classroom transcripts from multiple teachers to examine how the word "just" was and could be used to suppress and invite dialogue. We used corpus linguistics tools to process and quantify the large body of text, not to describe the nature of the…

Wagner, David; Herbel-Eisenmann, Beth

2008-01-01

300

The Learning Environment in Clicker Classrooms: Student Processes of Learning and Involvement in Large University-Level Courses Using Student Response Systems  

ERIC Educational Resources Information Center

|To explore what social and educational infrastructure is needed to support classroom use of student response systems (Roschelle et al., 2004), this study investigated the ways in which student characteristics and course design choices were related to students' assessments of the contribution of clicker use to their learning and involvement in the…

Trees, April R.; Jackson, Michele H.

2007-01-01

301

i-ADHoRe 3.0--fast and sensitive detection of genomic homology in extremely large data sets  

PubMed Central

Comparative genomics is a powerful means to gain insight into the evolutionary processes that shape the genomes of related species. As the number of sequenced genomes increases, the development of software to perform accurate cross-species analyses becomes indispensable. However, many implementations that have the ability to compare multiple genomes exhibit unfavorable computational and memory requirements, limiting the number of genomes that can be analyzed in one run. Here, we present a software package to unveil genomic homology based on the identification of conservation of gene content and gene order (collinearity), i-ADHoRe 3.0, and its application to eukaryotic genomes. The use of efficient algorithms and support for parallel computing enable the analysis of large-scale data sets. Unlike other tools, i-ADHoRe can process the Ensembl data set, containing 49 species, in 1?h. Furthermore, the profile search is more sensitive to detect degenerate genomic homology than chaining pairwise collinearity information based on transitive homology. From ultra-conserved collinear regions between mammals and birds, by integrating coexpression information and protein–protein interactions, we identified more than 400 regions in the human genome showing significant functional coherence. The different algorithmical improvements ensure that i-ADHoRe 3.0 will remain a powerful tool to study genome evolution.

Proost, Sebastian; Fostier, Jan; De Witte, Dieter; Dhoedt, Bart; Demeester, Piet; Van de Peer, Yves; Vandepoele, Klaas

2012-01-01

302

Appropriate and inappropriate uses of classroom amplification  

NASA Astrophysics Data System (ADS)

Currently, classroom amplifiers are being aggressively advocated as substitutes for good acoustics in small mainstream classrooms. Amplifiers are routinely installed without regard to unoccupied classroom noise levels and reverberation times. Amplifiers are being specified by some school districts as a money-saving alternative to mandating compliance with the ANSI standard on classroom acoustics, S12.60-2002. Manufacturers of portable classrooms and noisy wall mounted HVAC systems have joined in supporting the use of classroom amplifiers, claiming that low (35 dBA) classroom noise levels specified by the ANSI standard are unaffordable and unnecessary given amplifiers. The authors believe that the routine use of classroom amplification is appropriate in very large lecture rooms, in special education classrooms for hearing impaired students, for voice-impaired occupants, and perhaps in certain other limited circumstances. The authors explain why they believe the routine use of amplifiers in small mainstream classrooms is an inappropriate substitute for the good classroom acoustics specified in the ANSI standard.

Lubman, David; Sutherland, Louis C.

2005-09-01

303

Improving Interactions in the Large Language Class.  

ERIC Educational Resources Information Center

Describes a prototypical microcomputer system that improves the interactions between teacher and large language classes in a traditional language classroom setting. This system achieves dynamic interactions through multiple student/professor interventions, immediate and delayed feedback, and individual teacher/student conferences. The system uses…

Raymond, Patricia M.; Raymond, Jacques; Pilon, Daniel

1998-01-01

304

The Social Network Classroom  

Microsoft Academic Search

\\u000a Online social networking is an important part in the everyday life of college students. Despite the increasing popularity\\u000a of online social networking among students and faculty members, its educational benefits are largely untested. This paper\\u000a presents our experience in using social networking applications and video content distribution websites as a complement of\\u000a traditional classroom education. In particular, the solution has

Peter Bunus

2010-01-01

305

Petascale Global Kinetic Simulations of The Magnetosphere and Visualization Strategies for Analysis of Very Large Multi-Variate Data Sets  

NASA Astrophysics Data System (ADS)

3D global electromagnetic hybrid (fluid electrons, kinetic ions) simulations have long been considered the holy grail in kinetic modeling of the magnetosphere but high computational requirements have kept them out of reach. Petascale computers provide the computational power to make such simulations possible but peta computing poses two technical challenges. One is related to the development of efficient and scalable algorithms that can take advantage of the large number of cores. The second is related to knowledge extraction from the resulting simulation output. The challenge of science discovery from the extremely large data sets (˜ 200 TB from a single run) generated from global kinetic simulations is compounded by the multi-variate and "noisy" nature of the data. Here, we review our innovations to overcome both challenges. We have developed a highly scalable hybrid simulation code (H3D) that we used to perform the first petascale global kinetic simulation of the magnetosphere using 98,304 cores on the NSF Kraken supercomputer. To facilitate analysis of data from such runs, we have developed complex visualization pipeline including physics based algorithms to detect and track events of interest in the data. The effectiveness of this approach is illustrated through examples.

Karimabadi, H.; Loring, B.; Vu, H. X.; Omelchenko, Y.; Tatineni, M.; Majumdar, A.; Ayachit, U.; Geveci, B.

2011-10-01

306

Collaborative Classroom Management. Video to Accompany "A Biological Brain in a Cultural Classroom: Applying Biological Research to Classroom Management." [Videotape].  

ERIC Educational Resources Information Center

|This 43-minute VHS videotape is designed to be used in course and workshop settings with "A Biological Brain in a Cultural Classroom: Applying Biological Research to Classroom Management." The videotape's principal values are as an introduction to the issues explored in the book and as a catalyst for group discussions and activities related to…

2001

307

WebViz:A Web-based Collaborative Interactive Visualization System for large-Scale Data Sets  

NASA Astrophysics Data System (ADS)

WebViz is a web-based application designed to conduct collaborative, interactive visualizations of large data sets for multiple users, allowing researchers situated all over the world to utilize the visualization services offered by the University of Minnesota’s Laboratory for Computational Sciences and Engineering (LCSE). This ongoing project has been built upon over the last 3 1/2 years .The motivation behind WebViz lies primarily with the need to parse through an increasing amount of data produced by the scientific community as a result of larger and faster multicore and massively parallel computers coming to the market, including the use of general purpose GPU computing. WebViz allows these large data sets to be visualized online by anyone with an account. The application allows users to save time and resources by visualizing data ‘on the fly’, wherever he or she may be located. By leveraging AJAX via the Google Web Toolkit (http://code.google.com/webtoolkit/), we are able to provide users with a remote, web portal to LCSE's (http://www.lcse.umn.edu) large-scale interactive visualization system already in place at the University of Minnesota. LCSE’s custom hierarchical volume rendering software provides high resolution visualizations on the order of 15 million pixels and has been employed for visualizing data primarily from simulations in astrophysics to geophysical fluid dynamics . In the current version of WebViz, we have implemented a highly extensible back-end framework built around HTTP "server push" technology. The web application is accessible via a variety of devices including netbooks, iPhones, and other web and javascript-enabled cell phones. Features in the current version include the ability for users to (1) securely login (2) launch multiple visualizations (3) conduct collaborative visualization sessions (4) delegate control aspects of a visualization to others and (5) engage in collaborative chats with other users within the user interface of the web application. These features are all in addition to a full range of essential visualization functions including 3-D camera and object orientation, position manipulation, time-stepping control, and custom color/alpha mapping.

Yuen, D. A.; McArthur, E.; Weiss, R. M.; Zhou, J.; Yao, B.

2010-12-01

308

Multilevel and Diverse Classrooms  

ERIC Educational Resources Information Center

|The benefits and advantages of classroom practices incorporating unity-in-diversity and diversity-in-unity are what "Multilevel and Diverse Classrooms" is all about. Multilevel classrooms--also known as mixed-ability or heterogeneous classrooms--are a fact of life in ESOL programs around the world. These classrooms are often not only multilevel…

Baurain, Bradley, Ed.; Ha, Phan Le, Ed.

2010-01-01

309

The Effects of Positive Verbal Reinforcement on the Time Spent outside the Classroom for Students with Emotional and Behavioral Disorders in a Residential Setting  

ERIC Educational Resources Information Center

|To more effectively instruct the entire class, teachers of students with emotional behavioral disorders (EBD) often choose to send students who display inappropriate behavior out of the room. A multiple baseline across settings was used to evaluate the effects of increasing teacher positive verbal reinforcement on the amount of time 2 students…

Kennedy, Christina; Jolivette, Kristine

2008-01-01

310

Classroom Assessment Techniques: Interviews  

NSDL National Science Digital Library

This page describes the technique of using interviews to assess student understanding. The assessment tool is one of a series of Classroom Assessment Techniques (CATs) provided by the Field-tested Learning Assessment Guide (FLAG) website. The CATs of FLAG were constructed as a resource for science, technology, engineering and mathematics (STEM) instructors to emphasize deeper levels of learning and to give instructors valuable feedback during a course. Interviews enable instructors to judge the extent of understanding students have developed with respect to a series of well-focused, conceptually-related scientific ideas. This site provides an overview of this assessment instrument including information about how to use classroom interviews to their maximum benefit. The site is also linked to a set of discipline-specific "tools" that can be downloaded for immediate use, as well as supplementary links and sources to further explore this assessment tool.

Smith, Mike U.; Southerland, Sherry A.; The National Institute for Science Education; College Level One Team

311

Influences on children's competence in early childhood classrooms  

Microsoft Academic Search

The purpose of the study was to examine the contributions of classroom context (activity settings, teacher behavior, contact with peers and teachers) to children's cognitive and social competence in early childhood classrooms. One-hundred fourteen children (61 girls; Mage = 51.7 months) were observed in their early childhood classrooms during free play time. Children's cognitive and social competence were measured by

Susan Kontos; Amanda Wilcox-Herzog

1997-01-01

312

Improving the Teacher's Awareness of Nonverbal Communication in the Classroom.  

ERIC Educational Resources Information Center

|The emphasis in this paper is on developing teacher awareness of how nonverbal communication fits into the classroom setting. Various positive and negative aspects of this phase of communication in the classroom are explored. A classroom teacher is observed closely by students every day, and her/his attitude, feelings, mood or state of mind,…

Kachur, Donald; And Others

313

Environmentally Enriched Classrooms and the Development of Disadvantaged Preschool Children.  

ERIC Educational Resources Information Center

This study evaluates the effects of placement of additional equipment in preschool classrooms on the cognitive, perceptual, and social development of urban Negro four-year-old children. Two Get Set classrooms in each of six areas of Philadelphia were paired for teachers, subjects, physical facilities and equipment. One classroom in each pair was…

Busse, Thomas V.; And Others

314

Systemize Classroom Management to Enhance Teaching and Learning  

ERIC Educational Resources Information Center

|Good classroom management is one of the most important goals teachers strive to establish from the first day of class. The rules, procedures, activities, and behaviors set the classroom tone throughout the school year. By revising, updating, and systemizing classroom management activities, teachers can eliminate many problems created by students…

Delman, Douglas J.

2011-01-01

315

Practical Classroom Applications of Language Experience: Looking Back, Looking Forward.  

ERIC Educational Resources Information Center

|The 38 essays in this book look back at language experience as an educational approach, provide practical classroom applications, and reconceptualize language experience as an overarching education process. Classroom teachers and reading specialists describe strategies in use in a variety of classroom settings and describe ways to integrate…

Nelson, Olga G., Ed.; Linek, Wayne M., Ed.

316

Multilingual Label Quests: A Practice for the "Asymmetrical" Multilingual Classroom  

ERIC Educational Resources Information Center

|Research on multilingual classrooms usually focuses on contexts where both teachers and pupils share the same linguistic repertoire; what can be called "symmetrical" multilingual classrooms. This paper sets out to investigate whether (and how) pupils' multilingual resources can be used in classrooms where the teacher does not share pupils'…

Bonacina-Pugh, Florence

2013-01-01

317

Portraits of Whole Language Classrooms: Learning for All Ages.  

ERIC Educational Resources Information Center

Highlighting typical days in a variety of whole-language classrooms, this book describes learners of all ages, beginning with a home day-care setting through preschool programs and elementary classrooms to a junior high and high school. The book also describes a special education site and an English-as-a-Second Language classroom, and concludes in…

Mills, Heidi, Ed.; Clyde, Jean Anne, Ed.

318

Radiosonde Atmospheric Temperature Products for Assessing Climate (RATPAC): A new data set of large-area anomaly time series  

NASA Astrophysics Data System (ADS)

A new data set containing large-scale regional mean upper air temperatures based on adjusted global radiosonde data is now available up to the present. Starting with data from 85 of the 87 stations adjusted for homogeneity by Lanzante, Klein and Seidel, we extend the data beyond 1997 where available, using a first differencing method combined with guidance from station metadata. The data set consists of temperature anomaly time series for the globe, the hemispheres, tropics (30°N-30°S) and extratropics. Data provided include annual time series for 13 pressure levels from the surface to 30 mbar and seasonal time series for three broader layers (850-300, 300-100 and 100-50 mbar). The additional years of data increase trends to more than 0.1 K/decade for the global and tropical midtroposphere for 1979-2004. Trends in the stratosphere are approximately -0.5 to -0.9 K/decade and are more negative in the tropics than for the globe. Differences between trends at the surface and in the troposphere are generally reduced in the new time series as compared to raw data and are near zero in the global mean for 1979-2004. We estimate the uncertainty in global mean trends from 1979 to 2004 introduced by the use of first difference processing after 1995 at less than 0.02-0.04 K/decade in the troposphere and up to 0.15 K/decade in the stratosphere at individual pressure levels. Our reliance on metadata, which is often incomplete or unclear, adds further, unquantified uncertainty that could be comparable to the uncertainty from the FD processing. Because the first differencing method cannot be used for individual stations, we also provide updated station time series that are unadjusted after 1997. The Radiosonde Atmospheric Temperature Products for Assessing Climate (RATPAC) data set will be archived and updated at NOAA's National Climatic Data Center as part of its climate monitoring program.

Free, Melissa; Seidel, Dian J.; Angell, James K.; Lanzante, John; Durre, Imke; Peterson, Thomas C.

2005-11-01

319

Promoting Active Involvement in Classrooms  

ERIC Educational Resources Information Center

|This article presents a rationale for using active involvement techniques, describes large- and small-group methods based on their documented effectiveness and applicability to K-12 classrooms, and illustrates their use. These approaches include ways of engaging students in large groups (e.g., unison responses, response cards, dry-erase boards,…

Conderman, Greg; Bresnahan, Val; Hedin, Laura

2012-01-01

320

Possible calcium centers for hydrogen storage applications: An accurate many-body study by AFQMC calculations with large basis sets  

NASA Astrophysics Data System (ADS)

Weak H2 physisorption energies present a significant challenge to first-principle theoretical modeling and prediction of materials for H storage. There has been controversy regarding the accuracy of DFT on systems involving Ca cations. We use the auxiliary-field quantum Monte Carlo (AFQMC) methodootnotetext S. Zhang and H. Krakauer, Phys. Rev. Lett. 90, 136401 (2003); W. A. Al-Saidi, S. Zhang and H. Krakauer, J. Chem. Phys. 124, 224101 (2006). to accurately predict the binding energy of Ca^+,,H2. AFQMC scales as Nbasis^3 and has demonstrated accuracy similar to or better than the gold-standard coupled cluster CCSD(T) method. We apply a modified Cholesky decomposition to achieve efficient Hubbard-Stratonovich transformation in AFQMC at large basis sizes. We employ the largest correlation consistent basis sets available, up to Ca/cc-pCV5Z, to extrapolate to the complete basis limit. The calculated potential energy curve exhibits binding with a double-well structure.

Purwanto, Wirawan; Krakauer, Henry; Zhang, Shiwei; Virgus, Yudistira

2011-03-01

321

The Classroom Animal: Crickets.  

ERIC Educational Resources Information Center

|Suggests using crickets for classroom activities, providing background information on their anatomy and reproduction and tips on keeping individual organisms or a breeding colony in the classroom. (JN)|

Kramer, David C.

1985-01-01

322

Creating Learning Communities in the Classroom  

ERIC Educational Resources Information Center

|There are many ways to construct classroom-based learning communities. Nevertheless, the emphasis is always on cooperative learning. In this article, the authors focus on three teaching methods--interteaching, team-based learning, and cooperative learning in large, lecture-based courses--that they have used successfully to create classroom-based…

Saville, Bryan K.; Lawrence, Natalie Kerr; Jakobsen, Krisztina V.

2012-01-01

323

In silico assessment of adverse effects of a large set of 6-fluoroquinolones obtained from a study of tuberculosis chemotherapy.  

PubMed

Among the different chemotherapeutic classes available today, the 6-fluoroquinolone (6-FQ) antibacterials are still one of the most effective cures in fighting tuberculosis (TB). Nowadays, the development of novel 6-FQs for treatment of TB mainly depends on understanding how the structural modifications of the main quinolone scaffold at specific positions affect the anti-mycobacterial activity. Alongside the structure-activity relationship (SAR) studies of the 6-FQ antibacterials, which can be considered as a golden rule in the development of novel active antitubercular 6-FQs, the structure side effects relationship (SSER) of these drugs must be also taken into account. In the present study we focus on a proficient implementation of the existing knowledge-based expert systems for design of novel 6-FQ antibacterials with possible enhanced biological activity against Mycobaterium tuberculosis as well as lower toxicity. Following the SAR in silico studies of the quinolone antibacterials against M. tuberculosis performed in our laboratory, a large set of 6-FQs was selected. Several new 6-FQ derivatives were proposed as drug candidates for further research and development. The 6- FQs identified as potentially effective against M. tuberculosis were subjected to an additional SSER study for prediction of their toxicological profile. The assessment of structurally-driven adverse effects which might hamper the potential of new drug candidates is mandatory for an effective drug design. We applied publicly available knowledge-based (expert) systems and Quantitative Structure-Activity Relationship (QSAR) models in order to prepare a priority list of active compounds. A preferred order of drug candidates was obtained, so that the less harmful candidates were identified for further testing. TOXTREE expert system as well as some QSAR models developed in the framework of EC funded project CAESAR were used to assess toxicity. CAESAR models were developed according to the OECD principles for the validation of QSAR and they turn to be appropriate tools for in silico tests regarding five different toxicity endpoints. Those endpoints with high relevance for REACH are: bioconcentration factor, skin sensitization, carcinogenicity, mutagenicity, and developmental toxicity. We used the above-mentioned freely available models to select a set of less harmful active 6-FQs as candidates for clinical studies. PMID:23062244

Tusar, Marjan; Minovski, Nikola; Fjodorova, Natalja; Novic, Marjana

2012-09-01

324

The Impact of Course Delivery Systems on Student Achievement and Sense of Community: A Comparison of Learning Community versus Stand-Alone Classroom Settings in an Open-Enrollment Inner City Public Community College  

ERIC Educational Resources Information Center

|This study examined the effects of two types of course delivery systems (learning community classroom environments versus stand-alone classroom environments) on the achievement of students who were simultaneously enrolled in remedial and college-level social science courses at an inner city open-enrollment public community college. This study was…

Bandyopadhyay, Pamela

2010-01-01

325

Classroom Antarctica  

NSDL National Science Digital Library

This website is a collection of units designed to teach students about the global importance of Antarctica. Topics covered in these units includes ice, the ocean, geology, weather, topography, auroras, the history of Antarctic exploration, living in Antarctica, animals, plants, the Antarctic Treaty, and the environment. Each unit has a selection of activities that are adaptable to the range of abilities in a class and the particular interests of the students. There are hundreds of useful web links throughout and a wealth of support material listed under Classroom Resources.

Haywood, Elizabeth

326

Thursday's Classroom  

NSDL National Science Digital Library

Every Thursday, this NASA-created learning resource presents a new topic with the aim of providing "a lasting connection between NASA's latest research and the classroom environment." Prior lesson topics have included the recent solar eclipse, the Mars Polar Lander, and organisms that survive in extreme conditions and their implications for the possibility of extraterrestrial life. For each lesson, there are links to news reports and a range of lesson plans and activity sheets designed for different age groups. The site also contains an archive/ schedule of prior and future lessons.

327

Engaging students through the use of classroom response systems.  

PubMed

Nursing faculty strive to stimulate learning and actively engage students in the classroom. Developing new approaches to student engagement in large classrooms can be a challenging task. The use of a classroom response system encourages students to actively participate while learning essential nursing knowledge in a way that adheres to principles of adult learning. PMID:17496504

Moredich, Cheryl; Moore, Ellen

328

Bag-Tanks for Your Classroom.  

ERIC Educational Resources Information Center

|Suggests using plastic bags as aquaria and terraria. Describes techniques for converting plastic sheets into aquaria, how to set them up for classroom use, and other uses for plastic bag aquaria. (DS)|

Wulfson, Stephen E.

1981-01-01

329

"Did Ronald McDonald also Tend to Scare You as a Child?": Working to Emplace Consumption, Commodities and Citizen-Students in a Large Classroom Setting  

ERIC Educational Resources Information Center

|So-called "radical" and "critical"pedagogy seems to be everywhere these days on the landscapes of geographical teaching praxis and theory. Part of the remit of radical/critical pedagogy involves a de-centring of the traditional "banking" method of pedagogical praxis. Yet, how do we challenge this "banking" model of knowledge transmission in both…

Goodman, Michael K.

2008-01-01

330

The IRB and Classroom Research  

ERIC Educational Resources Information Center

|Scholars conducting research in classrooms face a myriad of ethical issues somewhat unique to the educational setting. While the Code of Federal Regulations (45 CFR 46) generally provides that educational research be classified as exempt from review by Institutional Review Boards, those same regulations provide a host of special conditions under…

Hecht, Jeffrey B.

2005-01-01

331

Structural Analysis in the Classroom  

ERIC Educational Resources Information Center

|The purpose of this article is to describe an applied method of assessing and manipulating environmental factors influencing student behavior. The assessment procedure is called structural analysis (SA) and can be a part of a functional behavioral assessment (FBA) process or a stand-alone set of procedures for teachers to use in their classrooms.…

Gage, Nicholas A.; Lewis, Timothy J.

2010-01-01

332

Classroom Management. Brief  

ERIC Educational Resources Information Center

In learning-centered classrooms, the emphasis of classroom management shifts from maintaining behavioral control to fostering student engagement and self-regulation as well as community responsibility. This brief describes classroom management in "learning centered" classrooms, where practices are consistent with recent research knowledge about…

National Education Association Research Department, 2006

2006-01-01

333

Global Internet Video Classroom: A Technology Supported Learner-Centered Classroom  

ERIC Educational Resources Information Center

The Global Internet Video Classroom (GIVC) Project connected Chicago Civil Rights activists of the 1960s with Cape Town Anti-Apartheid activists of the 1960s in a classroom setting where learners from Cape Town and Chicago engaged activists in conversations about their motivation, principles, and strategies. The project was launched in order to…

Lawrence, Oliver

2010-01-01

334

Hyperactive boys in their classroom: Assessment of teacher and peer perceptions, interactions, and classroom behaviors  

Microsoft Academic Search

Teacher ratings, peer perceptions, peer interactions, and classroom behaviors of 17 hyperactive and 17 active elementary school-age boys, nominated by their teachers, were compared using multivariate analyses and planned comparisons in order to better describe and assess hyperactivity in its most probable setting —the classroom. Hyperactive boys were found to be significantly different from actives on measures from all data

Andrea Rubinstein Klein; Richard David Young

1979-01-01

335

Global Internet Video Classroom: A Technology Supported Learner-Centered Classroom  

ERIC Educational Resources Information Center

|The Global Internet Video Classroom (GIVC) Project connected Chicago Civil Rights activists of the 1960s with Cape Town Anti-Apartheid activists of the 1960s in a classroom setting where learners from Cape Town and Chicago engaged activists in conversations about their motivation, principles, and strategies. The project was launched in order to…

Lawrence, Oliver

2010-01-01

336

Impact of classroom design on interactive whiteboard use in a special needs classroom  

Microsoft Academic Search

The physical environment of a classroom—how space is organized and controlled—impacts the use of technology within that setting. This paper presents the initial rationale for choosing an interactive whiteboard (IWB) as the platform for software designed to encourage play in primary students with Autism Spectrum Disorders. An observational study of normal classroom practice and of an installed version of the

Grant Shannon; Sally Jo Cunningham

2009-01-01

337

Behavior Problems in Learning Activities and Social Interactions in Head Start Classrooms and Early Reading, Mathematics, and Approaches to Learning  

ERIC Educational Resources Information Center

|Relations between early problem behavior in preschool classrooms and a comprehensive set of school readiness outcomes were examined for a stratified random sample (N = 256) of 4-year-old children enrolled in a large, urban school district Head Start program. A series of multilevel models examined the unique contribution of early problem behavior…

Bulotsky-Shearer, Rebecca J.; Fernandez, Veronica; Dominguez, Ximena; Rouse, Heather L.

2011-01-01

338

NUMERICAL SIMULATIONS OF THE NATURAL VENTILATION DESIGN MIX OF ELEMENTARY SCHOOL CLASSROOMS  

Microsoft Academic Search

Most traditional elementary school classrooms here do not have air-conditioners and it often feel stuffy in classrooms located in the top floors. In addition, traditional classrooms widely have noise problem, so do the open educational classrooms. If the windows and doors are closed to reduce noise, it will result in the phenomenon of stuffiness, which largely prevents the external air

Hsin-hung Wu; Fu-Jen Wang; Che-ming Chiang; Chi-ming Lai

2007-01-01

339

Using Data in the Classroom  

NSDL National Science Digital Library

This site provides information and discussion for educators and resource developers interested in effective teaching methods and pedagogical approaches for using data in the classroom. Much of the information currently on the site reflects discussions at the recent NSDL sponsored workshop on Using Data in the Classroom. Engaging students in using data to address scientific questions has long been an integral aspect of science education. Today's information technology provides many new mechanisms for collecting, manipulating, and aggregating data. In addition, large on-line data repositories provide the opportunity for completely new kinds of student experiences.

2002-01-01

340

Pivotal Response Teaching in the Classroom Setting  

Microsoft Academic Search

Pivotal response teaching (PRT) is an empirically supported naturalistic behavioral intervention proven to be efficacious in the education of children with autism. This intervention involves loosely structured learning environments, teaching during ongoing interactions between student and teacher, child initiation of teaching episodes, child choice of teaching activities or materials, prompting, providing reinforcers directly related to the child's behavior, and providing

Aubyn C. Stahmer; Jessica Suhrheinrich; Sarah Reed; Cynthia Bolduc; Laura Schreibman

2010-01-01

341

Resistance to Disruption in a Classroom Setting  

ERIC Educational Resources Information Center

Substantial experimental evidence indicates that behavior reinforced on a denser schedule is more resistant to disruption than is behavior reinforced on a thinner schedule. The present experiment studied resistance to disruption in a natural educational environment. Responding during familiar activities was reinforced on a multiple…

Parry-Cruwys, Diana E.; Neal, Carrie M.; Ahearn, William H.; Wheeler, Emily E.; Premchander, Raseeka; Loeb, Melissa B.; Dube, William V.

2011-01-01

342

RESISTANCE TO DISRUPTION IN A CLASSROOM SETTING  

PubMed Central

Substantial experimental evidence indicates that behavior reinforced on a denser schedule is more resistant to disruption than is behavior reinforced on a thinner schedule. The present experiment studied resistance to disruption in a natural educational environment. Responding during familiar activities was reinforced on a multiple variable-interval (VI) 7-s VI 30-s schedule for 6 participants with developmental disabilities. Resistance to disruption was measured by presenting a distracting item. Response rates in the disruption components were compared to within-session response rates in prior baseline components. Results were consistent with the predictions of behavioral momentum theory for 5 of 6 participants.

Parry-Cruwys, Diana E; Neal, Carrie M; Ahearn, William H; Wheeler, Emily E; Premchander, Raseeka; Loeb, Melissa B; Dube, William V

2011-01-01

343

Individual sequences in large sets of gene sequences may be distinguished efficiently by combinations of shared sub-sequences  

Microsoft Academic Search

Background: Most current DNA diagnostic tests for identifying organisms use specific oligonucleotide probes that are complementary in sequence to, and hence only hybridise with the DNA of one target species. By contrast, in traditional taxonomy, specimens are usually identified by 'dichotomous keys' that use combinations of characters shared by different members of the target set. Using one specific character for

Mark J. Gibbs; John S. Armstrong; Adrian J. Gibbs

2005-01-01

344

Economic Role of Small Businesses Using Large Data Sets: An Analysis of the Contributions of Small Firms to Urban Growth.  

National Technical Information Service (NTIS)

The research in this paper empirically explores the importance of small businesses in fostering economic growth. We develop a unique data set for Houston, Texas that contains observations of over 63,000 individual firms and that has employee counts as wel...

J. E. Kohlhase S. G. Craig

2006-01-01

345

Insider power and wage setting in transition: Evidence from a panel of large Polish firms, 1988–1994  

Microsoft Academic Search

We analyse wage setting behaviour in the period of transition using the `right to manage model'. The results show a significant change in wage bargaining in 1990. However, the insider power, measured by the employees' capacity to capture productivity gains, persists. The sensitivity of wages to productivity changes is much stronger on the upside than on the downside. In SOEs

Irena Grosfeld; Jean-François Nivet

1999-01-01

346

Problem-Based Teaching of a Large Class  

NSDL National Science Digital Library

This webpage, authored by a biology professor from the University of Delaware, addresses the question of how one might adapt the problem-based learning approach for use in a large classroom setting. The page contains no links. The information is not dated and will be useful to all teaching faculty concerned with this question.

Dion, Linda

2011-04-01

347

Developing a "Semi-Systematic" Approach to Using Large-Scale Data-Sets for Small-Scale Interventions: The "Baby Matterz" Initiative as a Case Study  

ERIC Educational Resources Information Center

The appropriateness of using statistical data to inform the design of any given service development or initiative often depends upon judgements regarding scale. Large-scale data sets, perhaps national in scope, whilst potentially important in informing the design, implementation and roll-out of experimental initiatives, will often remain unused…

O'Brien, Mark

2011-01-01

348

Developing a "Semi-Systematic" Approach to Using Large-Scale Data-Sets for Small-Scale Interventions: The "Baby Matterz" Initiative as a Case Study  

ERIC Educational Resources Information Center

|The appropriateness of using statistical data to inform the design of any given service development or initiative often depends upon judgements regarding scale. Large-scale data sets, perhaps national in scope, whilst potentially important in informing the design, implementation and roll-out of experimental initiatives, will often remain unused…

O'Brien, Mark

2011-01-01

349

Divide and recombine (D&R) for the analysis of large and complex data sets with application to VoIP  

Microsoft Academic Search

Large complex data sets, or big data, pervade academia, industry, and government. They present substantial challenges to our historical methodological approaches to data analysis, and to our historical computational methods and environments for data analysis. They challenge achieving deep analysis, which means comprehensive detailed analysis that does not lose important information through inappropriate data reductions. They challenge the computational feasibility

Jin Xia

2011-01-01

350

Photonics Explorer: revolutionizing photonics in the classroom  

NASA Astrophysics Data System (ADS)

The `Photonics Explorer' is a unique intra-curricular optics kit designed to engage, excite and educate secondary school students about the fascination of working with light - hands-on, in their own classrooms. Developed with a pan European collaboration of experts, the kit equips teachers with class sets of experimental material provided within a supporting didactic framework, distributed in conjunction with teacher training courses. The material has been specifically designed to integrate into European science curricula. Each kit contains robust and versatile components sufficient for a class of 25-30 students to work in groups of 2-3. The didactic content is based on guided inquiry-based learning (IBL) techniques with a strong emphasis on hands-on experiments, team work and relating abstract concepts to real world applications. The content has been developed in conjunction with over 30 teachers and experts in pedagogy to ensure high quality and ease of integration. It is currently available in 7 European languages. The Photonics Explorer allows students not only to hone their essential scientific skills but also to really work as scientists and engineers in the classroom. Thus, it aims to encourage more young people to pursue scientific careers and avert the imminent lack of scientific workforce in Europe. 50 Photonics Explorer kits have been successfully tested in 7 European countries with over 1500 secondary school students. The positive impact of the kit in the classroom has been qualitatively and quantitatively evaluated. A non-profit organisation, EYESTvzw [Excite Youth for Engineering Science and Technology], is responsible for the large scale distribution of the Photonics Explorer.

Prasad, Amrita; Debaes, Nathalie; Cords, Nina; Fischer, Robert; Vlekken, Johan; Euler, Manfred; Thienpont, Hugo

2012-10-01

351

Effect of Electrical Disturbances, Grid Recovery Voltage and Generator Inertia on Maximation of Mechanical Torques in Large Turbogenerator Sets  

Microsoft Academic Search

Investigations on large turbogenerator shaft torques caused by different types of electrical disturbances have shown that the stress levels can be higher than during conventional terminal short circuits. Shaft-stress trend in the future highly utilized generators is illustrated. Influence of electrical and mechanical modeling on the calculation results is studied. A suitable protection conception is outlined.

H. J. Rohrer; K. E. Schnirel; I. M. Canay

1980-01-01

352

Connecting classrooms to the Milky Way  

NASA Astrophysics Data System (ADS)

'Connecting Classrooms to the Milky Way' is a project of the EU-HOU Consortium (Hands-On-Universe, Europe), involving 11 European countries. It is supported by the lifelong Learning Programme of the European Community. The main goal of this project was to set up the first network of small radio-telescopes dedicated to education all around Europe and directly accessible from a simple Web interface. Any classroom connected to Internet via any Web-browser can now remotely control one of the radio-telescopes and observe the HI emission coming from our Galaxy. The interface also provides the users with simple tools to analyse the data: (i) derive the Milky-Way rotation curve and (ii) map the spiral arms HI distribution. A special emphasis has been made to enable the young generation to understand the challenges of these wavelengths, which are currently at the frontline of the new instruments with the development of the ALMA (Atacama Large Millimeter Array) and SKA (Square Kilometer Array) projects.

Salomé, P.; Radiguet, A.; Albert, B.; Batrung, M.; Caillat, M.; Gheudin, M.; Libert, Y.; Ferlet, R.; Maestrini, A.; Melchior, A.-L.; Munier, J.-M.; Rudolph, A.

2012-12-01

353

A classroom demonstration of reciprocal space  

NASA Astrophysics Data System (ADS)

An array of nanowires and a laser pointer are used for a simple visualization of two-dimensional reciprocal space. The experiment can be performed without any preparation and in any classroom. It aids the teaching of scattering experiments, and illustrates the underlying principles of electron, x-ray, and neutron scattering. A detailed study of the diffraction pattern was performed by mounting the sample with nanowires on a stage designed for x-ray scattering. The setup is well suited for undergraduate students, who get training in sample alignment in a small lab instead of at a large-scale facility. The exact positions of the diffraction spots are calculated and monitored experimentally for a 360° rotation of the sample. By fitting to this set of images, it is possible to determine the lattice vectors of the artificial crystal with an uncertainty of less than 1%.

Hannibal Madsen, Morten; Høpfner, Louise; Rasmussen, Nina; Stolborg, Mikkel; Nyga?rd, Jesper; Feidenhans'l, Robert; Thomsen, Jan W.

2013-04-01

354

Tips from the Classroom.  

ERIC Educational Resources Information Center

Four tips for use in the English-as-a-Second-Language classroom are highlighted: Mr. Bean in the Classroom; Defining Your Future; Coin Questions; Our Futures: Simple, Progressive, and Perfect. (Author/VWL)

Epstein, Jim; Ashcraft, Nikki; Clarke, Paul M.; Wolf, Grant S.

1999-01-01

355

The Nonsexist Classroom.  

ERIC Educational Resources Information Center

A teacher describes her experiences in trying to reduce sex role stereotypes in her first and second grade classroom. Following this article is a test for teachers to determine whether they are unconsciously promoting sexism in the classroom. (KC)

Hill, Jan

1980-01-01

356

Strong linkages between dimethylsulphoniopropionate (DMSP) and phytoplankton community physiology in a large subtropical and tropical Atlantic Ocean data set  

NASA Astrophysics Data System (ADS)

We present an extensive data set of dimethylsulphide (DMS, n = 651) and dimethylsulphoniopropionate (DMSP, n = 590) from the Atlantic Meridional Transect program. These data are used to derive representative depth profiles that illustrate observed natural variations and can be used for DMS and DMSP model-validation in oligotrophic waters. To further understand our data set, we interpret the data with a wide range of accompanying parameters that characterize the prevailing biogeochemical conditions and phytoplankton community physiology, activity, taxonomic composition, and capacity to cope with light stress. No correlations were observed with typical biomarker pigments for DMSP-producing species. However, strong correlations were found between DMSP and primary production by cells >2 ?m in diameter and between DMSP and some photo-protective pigments. These parameters are measures of mixed phytoplankton communities, so we infer that such associations are likely to be stronger in DMSP-producing organisms. Further work is warranted to develop links between community parameters, DMS, and DMSP at the global scale.

Bell, Thomas G.; Poulton, Alex J.; Malin, Gill

2010-09-01

357

Classroom Management. TESOL Classroom Practice Series  

ERIC Educational Resources Information Center

|This series captures the dynamics of the contemporary ESOL classroom. It showcases state-of-the-art curricula, materials, tasks, and activities reflecting emerging trends in language education and seeks to build localized language teaching and learning theories based on teachers' and students' unique experiences in and beyond the classroom. Each…

Farrell, Thomas S. C., Ed.

2008-01-01

358

Creating Respectful Classroom Environments  

ERIC Educational Resources Information Center

Respect is a critical variable in education. It is critical to each individual child in the classroom environment as well as to the teaching and learning that takes place in the classroom. Children learn by example. Where do they get their examples? This article explores the parameters of teaching and encouraging respect in classrooms for young…

Miller, Regina; Pedro, Joan

2006-01-01

359

Analysing Bilingual Classroom Discourse  

ERIC Educational Resources Information Center

The present paper analyses and evaluates spoken discourse in the bilingual classroom at Damascus University. It looks at the mechanism of classroom interaction: the use of questions, initiations, repetitions and expansions. Although this paper deals with classroom interaction at Damascus University, it is believed that the results arrived at may…

Hasan, Ali S.

2006-01-01

360

Assessing classroom incentive practices  

Microsoft Academic Search

The motivational effects of an experimental program of pedagogy, designed for culturally disadvantaged children, were evaluated relative to a control group of conventional classrooms. Ss were primary grade students in 155 classrooms. Results revealed experimental classrooms to be characterized by significantly more teacher approval, less teacher disapproval, and by more student solicitation of teacher attention than were found in conventional

Ted L. Rosenthal; Billie Underwood; Marion Martin

1969-01-01

361

Arranging the Informal Classroom.  

ERIC Educational Resources Information Center

|With the advent of the informal or open classroom, a new area of concern has become important--classroom arrangement. In the past, classrooms were oriented toward the front, toward the teacher's desk and the blackboard. Education depended mainly on the pupil's interaction with the teacher and with printed materials. Nowadays, in informal…

Engel, Brenda S.

362

A large, consistent plasma proteomics data set from prospectively collected breast cancer patient and healthy volunteer samples  

Microsoft Academic Search

Background  Variability of plasma sample collection and of proteomics technology platforms has been detrimental to generation of large\\u000a proteomic profile datasets from human biospecimens.\\u000a \\u000a \\u000a \\u000a \\u000a Methods  We carried out a clinical trial-like protocol to standardize collection of plasma from 204 healthy and 216 breast cancer patient\\u000a volunteers. The breast cancer patients provided follow up samples at 3 month intervals. We generated proteomics profiles

Catherine P Riley; Xiang Zhang; Harikrishna Nakshatri; Bryan Schneider; Fred E Regnier; Jiri Adamec; Charles Buck

2011-01-01

363

New limit set on cosmic-ray monopole flux by a large-area superconducting magnetic-induction detector  

SciTech Connect

A search for cosmic-ray magnetic monopoles has been conducted using a fully coincident superconducting induction detector consisting of six independent high-order gradiometer coils forming the surfaces of a rectangular parallelepiped. The detector had an effective area for isotropic flux averaged over 4{pi} sr of 1.0 m{sup 2}. Data have been collected from October 1986 to January 1989 with an accumulated live time of 13 410 h. No monopole candidate events were seen, setting a new lower monopole flux limit for induction detectors of 3.8{times}10{sup {minus}13} cm{sup {minus}2} s{sup {minus}1} sr{sup {minus}1} at the 90% confidence level.

Bermon, S.; Chi, C.C.; Tsuei, C.C.; Rozen, J.R.; Chaudhari, P.; McElfresh, M.W. (IBM Thomas J. Watson Research Center, Post Office Box 218, Yorktown Heights, New York 10598 (USA)); Prodell, A. (Brookhaven National Laboratory, Upton, New York 11973 (USA))

1990-02-19

364

Physics Classroom: Resolution of Forces  

NSDL National Science Digital Library

This interactive tutorial explains how to resolve a force into force components. Numerous examples are combined with a simple language and informative graphics to provide students with a solid grasp of the method. Several practice problems and a Check Your Understanding section allows students to self-assess their learning. This is part of The Physics Classroom Tutorial series, a set of instructional pages aimed at students looking for a better grasp of basic concepts.

Henderson, Tom

2012-12-15

365

Classroom Assessment Techniques: Portfolios  

NSDL National Science Digital Library

This page describes the use of portfolios as an assessment tool. It is one of a series of Classroom Assessment Techniques (CATs) provided by the Field-tested Learning Assessment Guide (FLAG) website. The CATs of FLAG were constructed as a resource for science, technology, engineering and mathematics instructors to emphasize deeper levels of learning and to give instructors valuable feedback during a course. This site provides an overview of what portfolios are, how and when to use them, and why they are useful for assessing student understanding. The site is also linked to a set of discipline-specific "tools" that can be downloaded for immediate use, as well as supplementary links and sources to further explore this assessment tool.

Slater, Timothy F.; The National Institute for Science Education; College Level One Team

366

Classroom materials  

Microsoft Academic Search

How to read and understand poetry Edgar Allan Poe American story poemsPleasantville, New York: Educational Audio?Visual, Inc.The Cousteau oceanography series:“The Water Planet, Sets I and II” Burbank, California: Walt Disney Educational Media CompanyAmazing world of Dinosaurs multimedia kitBurbank, California: Walt Disney Educational Media Company

Gayle Kirker; Linda Poole; Janie Hamburger

1982-01-01

367

Efficient Computation of k-Nearest Neighbour Graphs for Large High-Dimensional Data Sets on GPU Clusters  

PubMed Central

This paper presents an implementation of the brute-force exact k-Nearest Neighbor Graph (k-NNG) construction for ultra-large high-dimensional data cloud. The proposed method uses Graphics Processing Units (GPUs) and is scalable with multi-levels of parallelism (between nodes of a cluster, between different GPUs on a single node, and within a GPU). The method is applicable to homogeneous computing clusters with a varying number of nodes and GPUs per node. We achieve a 6-fold speedup in data processing as compared with an optimized method running on a cluster of CPUs and bring a hitherto impossible -NNG generation for a dataset of twenty million images with 15 k dimensionality into the realm of practical possibility.

Dashti, Ali; Komarov, Ivan; D'Souza, Roshan M.

2013-01-01

368

Efficient Computation of k-Nearest Neighbour Graphs for Large High-Dimensional Data Sets on GPU Clusters.  

PubMed

This paper presents an implementation of the brute-force exact k-Nearest Neighbor Graph (k-NNG) construction for ultra-large high-dimensional data cloud. The proposed method uses Graphics Processing Units (GPUs) and is scalable with multi-levels of parallelism (between nodes of a cluster, between different GPUs on a single node, and within a GPU). The method is applicable to homogeneous computing clusters with a varying number of nodes and GPUs per node. We achieve a 6-fold speedup in data processing as compared with an optimized method running on a cluster of CPUs and bring a hitherto impossible [Formula: see text]-NNG generation for a dataset of twenty million images with 15 k dimensionality into the realm of practical possibility. PMID:24086314

Dashti, Ali; Komarov, Ivan; D'Souza, Roshan M

2013-09-23

369

Increased confidence in large-scale phosphoproteomics data by complementary mass spectrometric techniques and matching of phosphopeptide data sets.  

PubMed

Large-scale phosphoproteomics studies are of great interest due to their potential for the dissection of signaling pathways controlled by protein kinases. Recent advances in mass spectrometry (MS)-based phosphoproteomic techniques offer new opportunities to profile protein kinase activities in a comprehensive manner. However, this increasingly used approach still poses many analytical challenges. On one hand, high stringency criteria for phosphopeptide identification based on MS/MS data are needed in order to avoid false positives; however, on the other hand, these stringent criteria also result in the introduction of many false negatives. In the current report, we employ different mass spectrometric techniques for large-scale phosphoproteomics in order to reduce the presence of false negatives and enhance data confidence. A LTQ-Orbitrap LC-MS/MS platform identified approximately 3 times more phosphopeptides than Q-TOF LC-MS/MS instrumentation (4308 versus 1485 identifications, respectively). In both cases, collision induced dissociation (CID) was used to fragment peptides. Interestingly, the two platforms produced complementary data as many of the low scoring phosphopeptide ions identified by LTQ-Orbitrap MS/MS gave rise to high score identifications by Q-TOF MS/MS analysis, and vice versa. In fact, approximately 450 phosphopeptides identified by the Q-TOF instrument were not identified by the LTQ-Orbitrap. Further data comparison revealed the extent of the problem: in one experiment, the estimated number of false negatives (1066) was close to the number of identified phosphopeptides (1485). This work demonstrates that by using standard procedures for phosphopeptide identification the number of false negatives can be even greater than the number of false positives. We propose using historical phosphoproteomic data and spectral matching algorithms in order to efficiently minimize false negative rates. PMID:19537829

Alcolea, Maria P; Kleiner, Oliver; Cutillas, Pedro R

2009-08-01

370

The cosmogenic 21Ne production rate in quartz evaluated on a large set of existing 21Ne- 10Be data  

NASA Astrophysics Data System (ADS)

Based on a compilation of published combined 10Be and 21Ne cosmogenic nuclide data sets from quartz samples obtained at ETH Zürich we assess the 21Ne/ 10Be (P21/P10) production rate ratio with the goal to determine the 21Ne production rate (P21) in quartz. A variety of sliding "erosion islands" in a 21Ne/ 10Be versus 10Be diagram were evaluated to find the one that fits the data best, which in turn yields the most probable P21 if the 10Be production rate is known. The approach minimizes the influence of samples with a complex exposure history. A best-fit value for P21/P10 sp ( sp — the 10Be fraction being produced by spallation, as opposed to production by muons) of 4.23 ± 0.17 is obtained for a 10Be half-life of 1.39 Ma. Adopting a P10 sp value in quartz of 4.41 ± 0.52 at g -1 yr -1 this yields a P21 of 18.7 ± 2.3 at g -1 yr -1. It is possible that 2% of the 21Ne is produced by fast muons.

Kober, F.; Alfimov, V.; Ivy-Ochs, S.; Kubik, P. W.; Wieler, R.

2011-02-01

371

Rat ?-Fetoprotein binding affinities of a large set of structurally diverse chemicals elucidated the relationships between structures and binding affinities.  

PubMed

Endocrine disrupting chemicals interfere with the endocrine system in animals, including humans, to exert adverse effects. One of the mechanisms of endocrine disruption is through the binding of receptors such as the estrogen receptor (ER) in target cells. The concentration of any chemical in serum is important for its entry into the target cells to bind the receptors. ?-Fetoprotein (AFP) is a major transport protein in rodent serum that can bind with estrogens and thus change a chemical's availability for entrance into the target cell. Sequestration of an estrogen in the serum can alter the chemical's potential for disrupting estrogen receptor-mediated responses. To better understand endocrine disruption, we developed a competitive binding assay using rat amniotic fluid, which contains very high levels of AFP, and measured the binding to the rat AFP for 125 structurally diverse chemicals, most of which are known to bind ER. Fifty-three chemicals were able to bind the rat AFP in the assay, while 72 chemicals were determined to be nonbinders. Observations from closely examining the relationship between the binding data and structures of the tested chemicals are rationally explained in a manner consistent with proposed binding regions of rat AFP in the literature. The data reported here represent the largest data set of structurally diverse chemicals tested for rat AFP binding. The data assist in elucidating binding interactions and mechanisms between chemicals and rat AFP and, in turn, assist in the evaluation of the endocrine disrupting potential of chemicals. PMID:23013281

Hong, Huixiao; Branham, William S; Dial, Stacey L; Moland, Carrie L; Fang, Hong; Shen, Jie; Perkins, Roger; Sheehan, Daniel; Tong, Weida

2012-10-12

372

Discovery of a large set of SNP and SSR genetic markers by high-throughput sequencing of pepper (Capsicum annuum).  

PubMed

Genetic markers based on single nucleotide polymorphisms (SNPs) are in increasing demand for genome mapping and fingerprinting of breeding populations in crop plants. Recent advances in high-throughput sequencing provide the opportunity for whole-genome resequencing and identification of allelic variants by mapping the reads to a reference genome. However, for many species, such as pepper (Capsicum annuum), a reference genome sequence is not yet available. To this end, we sequenced the C. annuum cv. "Yolo Wonder" transcriptome using Roche 454 pyrosequencing and assembled de novo 23,748 isotigs and 60,370 singletons. Mapping of 10,886,425 reads obtained by the Illumina GA II sequencing of C. annuum cv. "Criollo de Morelos 334" to the "Yolo Wonder" transcriptome allowed for SNP identification. By setting a threshold value that allows selecting reliable SNPs with minimal loss of information, 11,849 reliable SNPs spread across 5919 isotigs were identified. In addition, 853 single sequence repeats were obtained. This information has been made available online. PMID:22911599

Nicolaï, M; Pisani, C; Bouchet, J-P; Vuylsteke, M; Palloix, A

2012-08-13

373

N-myc enhances the expression of a large set of genes functioning in ribosome biogenesis and protein synthesis  

PubMed Central

The myc oncogenes are frequently activated in human tumors, but there is no comprehensive insight into the target genes and downstream cellular pathways of these transcription factors. We applied serial analysis of gene expression (SAGE) to identify targets of N-myc in neuroblastomas. Analysis of 42 000 mRNA transcript tags in SAGE libraries of N-myc- transfected and control neuroblastoma cells revealed 114 up-regulated genes. The majority of these genes have a role in ribosome assembly and activity. Northern blot analysis confirmed up-regulation of all tested transcripts. Induction was complete within 4 h after N-myc expression. The large majority of the ribosomal proteins were induced, as well as genes controlling rRNA maturation. Cellular rRNA content was 45% induced. SAGE libraries and northern blot analysis confirmed up-regulation of many of these genes in N-myc-amplified neuroblastomas. As N-myc can functionally replace c-myc, we analyzed whether N-myc targets were induced by c-myc as well. Approximately 40% of these N-myc targets were up-regulated in a c-myc-transfected melanoma cell line. These data suggest that myc genes function as major regulators of the protein synthesis machinery.

Boon, Kathy; Caron, Huib N.; van Asperen, Ronald; Valentijn, Linda; Hermus, Marie-Christine; van Sluis, Peter; Roobeek, Ilja; Weis, Isabel; Voute, P.A.; Schwab, Manfred; Versteeg, Rogier

2001-01-01

374

Large increases in spending on postacute care in Medicare point to the potential for cost savings in these settings.  

PubMed

Identifying policies that will cut or constrain US health care spending and spending growth dominates reform efforts, yet little is known about whether the drivers of spending levels and of spending growth are the same. Policies that produce a one-time reduction in the level of spending, for example by making hospitals more efficient, may do little to reduce subsequent annual spending growth. To identify factors causing health care spending to grow the fastest, we focused on three conditions in the Medicare population: heart attacks, congestive heart failure, and hip fractures. We found that spending on postacute care-long-term hospital care, rehabilitation care, and skilled nursing facility care--was the fastest growing major spending category and accounted for a large portion of spending growth in 1994-2009. During that period average spending for postacute care doubled for patients with hip fractures, more than doubled for those with congestive heart failure, and more than tripled for those with heart attacks. We conclude that policies aimed at controlling acute care spending, such as bundled payments for short-term hospital spending and physician services, are likely to be more effective if they include postacute care, as is currently being tested under Medicare's Bundled Payment for Care Improvement Initiative. PMID:23650319

Chandra, Amitabh; Dalton, Maurice A; Holmes, Jonathan

2013-05-01

375

Classroom Clusters.  

ERIC Educational Resources Information Center

Presents photographs and the floor plan of a prekindergarten through fifth-grade school building that is designed with teaching and support areas arranged around a large, triangular room that serves as an auditorium, cafeteria, and overflow teaching space. The school also includes a circular media center and rectangular gymnasium. (GR)

Williamson, Susan

1997-01-01

376

LINC-NIRVANA for the large binocular telescope: setting up the world's largest near infrared binoculars for astronomy  

NASA Astrophysics Data System (ADS)

LINC-NIRVANA (LN) is the near-infrared, Fizeau-type imaging interferometer for the large binocular telescope (LBT) on Mt. Graham, Arizona (elevation of 3267 m). The instrument is currently being built by a consortium of German and Italian institutes under the leadership of the Max Planck Institute for Astronomy in Heidelberg, Germany. It will combine the radiation from both 8.4 m primary mirrors of LBT in such a way that the sensitivity of a 11.9 m telescope and the spatial resolution of a 22.8 m telescope will be obtained within a 10.5×10.5 arcsec scientific field of view. Interferometric fringes of the combined beams are tracked in an oval field with diameters of 1 and 1.5 arcmin. In addition, both incoming beams are individually corrected by LN's multiconjugate adaptive optics system to reduce atmospheric image distortion over a circular field of up to 6 arcmin in diameter. A comprehensive technical overview of the instrument is presented, comprising the detailed design of LN's four major systems for interferometric imaging and fringe tracking, both in the near infrared range of 1 to 2.4 ?m, as well as atmospheric turbulence correction at two altitudes, both in the visible range of 0.6 to 0.9 ?m. The resulting performance capabilities and a short outlook of some of the major science goals will be presented. In addition, the roadmap for the related assembly, integration, and verification process are discussed. To avoid late interface-related risks, strategies for early hardware as well as software interactions with the telescope have been elaborated. The goal is to ship LN to the LBT in 2014.

Hofferbert, Ralph; Baumeister, Harald; Bertram, Thomas; Berwein, Jürgen; Bizenberger, Peter; Böhm, Armin; Böhm, Michael; Borelli, José Luis; Brangier, Matthieu; Briegel, Florian; Conrad, Albert; De Bonis, Fulvio; Follert, Roman; Herbst, Tom; Huber, Armin; Kittmann, Frank; Kürster, Martin; Laun, Werner; Mall, Ulrich; Meschke, Daniel; Mohr, Lars; Naranjo, Vianak; Pavlov, Aleksei; Pott, Jörg-Uwe; Rix, Hans-Walter; Rohloff, Ralf-Rainer; Schinnerer, Eva; Storz, Clemens; Trowitzsch, Jan; Yan, Zhaojun; Zhang, Xianyu; Eckart, Andreas; Horrobin, Matthew; Rost, Steffen; Straubmeier, Christian; Wank, Imke; Zuther, Jens; Beckmann, Udo; Connot, Claus; Heininger, Matthias; Hofmann, Karl-Heinz; Kröner, Tim; Nussbaum, Eddy; Schertl, Dieter; Weigelt, Gerd; Bergomi, Maria; Brunelli, Alessandro; Dima, Marco; Farinato, Jacopo; Magrin, Demetrio; Marafatto, Luca; Ragazzoni, Roberto; Viotto, Valentina; Arcidiacono, Carmelo; Bregoli, Giovanni; Ciliegi, Paolo; Cosentino, Guiseppe; Diolaiti, Emiliano; Foppiani, Italo; Lombini, Matteo; Schreiber, Laura; D'Alessio, Francesco; Li Causi, Gianluca; Lorenzetti, Dario; Vitali, Fabrizio; Bertero, Mario; Boccacci, Patrizia; La Camera, Andrea

2013-08-01

377

The Social Network Classroom  

NASA Astrophysics Data System (ADS)

Online social networking is an important part in the everyday life of college students. Despite the increasing popularity of online social networking among students and faculty members, its educational benefits are largely untested. This paper presents our experience in using social networking applications and video content distribution websites as a complement of traditional classroom education. In particular, the solution has been based on effective adaptation, extension and integration of Facebook, Twitter, Blogger YouTube and iTunes services for delivering educational material to students on mobile platforms like iPods and 3 rd generation mobile phones. The goals of the proposed educational platform, described in this paper, are to make the learning experience more engaging, to encourage collaborative work and knowledge sharing among students, and to provide an interactive platform for the educators to reach students and deliver lecture material in a totally new way.

Bunus, Peter

378

Master Classrooms: Classroom Design with Technology in Mind.  

ERIC Educational Resources Information Center

Technology is changing the classroom requiring new design features and considerations to make the classroom flexible and interactive with the teaching process. The design of a Master Classroom, a product of the Classroom Improvement Project at the University of North Carolina at Chapel Hill, is described. These classrooms are specially-equipped to…

Conway, Kathryn

379

A success story: A large urban district offers a working model for implementing multisensory teaching into the resource and regular classroom  

Microsoft Academic Search

A large urban school district contracted with a private nonprofit educational foundation to train 126 special education resource\\u000a teachers in the last three years in an Orton-Gillingham-based program. These teachers are currently teaching learning-disabled\\u000a students in groups of 8–10 at the elementary level and 10–13 students at the secondary level. Learning-disabled students who\\u000a qualify for Special Education, either in reading

Lenox Hutcheson; Harry Selig; Norma Young

1990-01-01

380

THE EFFECT OF WINDOWLESS CLASSROOMS ON ELEMENTARY SCHOOL CHILDREN.  

ERIC Educational Resources Information Center

THIS CASE STUDY WAS MADE TO DETERMINE THE EFFECTS OF NONFENESTRATED CLASSROOMS ON CHILDREN'S LEARNING ACHIEVEMENT. USING GRADES K-3, OBSERVATIONS WERE MADE IN TWO SCHOOLS OF SIMILAR CONSTRUCTION AND DEMOGRAPHY. THE STUDY WAS MADE IN THREE SETTINGS--A YEAR IN EXISTING FENESTRATED CLASSROOMS, A YEAR WITH ALL WINDOWS REMOVED IN THE TEST SCHOOL AND…

LARSON, C. THEODORE; AND OTHERS

381

Critical Conversations: Tensions and Opportunities of the Dialogical Classroom  

ERIC Educational Resources Information Center

|English teachers and educators of English teachers should work within rather than against the tensions present in their classrooms. For us, nothing could be more key. Until university teacher educators construct and enact classrooms that embrace the dialogical tensions and possibilities within those settings, new and veteran teachers in the…

Fecho, Bob; Collier, Nicole D.; Friese, Elizabeth E. G.; Wilson, Amy Alexandra

2010-01-01

382

Effects of Classroom Structure on Student Achievement Goal Orientation  

Microsoft Academic Search

The authors assessed how classroom structure influenced student achievement goal orientation for mathematics. Three elementary school classes were assigned randomly to 1 classroom structure condition: token economy, contingency contract, or control. Students in each condition were required to set individual achievement goals on a weekly basis. The authors assessed differences in goal orientation by comparing the number of learning vs.

Shannon R. Self-brown; Samuel Mathews II

2003-01-01

383

Learning environments in information and communications technology classrooms  

Microsoft Academic Search

The study of learning environments provides a useful research framework for investigating the effects of educational innovations such as those which are associated with the use of the Internet in classroom settings. This study reports an investigation into the use of Internet technologies in high-school classrooms in Australia and Canada. Specifically, it combined the investigation of the physical and psychosocial

David B. Zandvliet; Barry J. Fraser

2004-01-01

384

Exploring affective technologies for the classroom with the subtle stone  

Microsoft Academic Search

Constructive emotional experiences are strongly related to effective learning. Yet, it is challenging for teachers, researchers and students alike to understand the emotions experienced in the classroom setting. Advances in wireless and sensor technologies open up possibilities for better supporting emotions. However, little work has explored how affective technologies in the classroom might operate. This paper describes a study where

Madeline Balaam; Geraldine Fitzpatrick; Judith Good; Rosemary Luckin

2010-01-01

385

Teacher's Survival Guide: Differentiating Instruction in the Elementary Classroom  

ERIC Educational Resources Information Center

|"Teacher's Survival Guide: Differentiating Instruction in the Elementary Classroom" answers the most common questions about differentiation, including what it is, how teachers can set up a classroom that promotes differentiation, which topics should be differentiated, what strategies are most effective, and how teachers can assess students…

Roberts, Julia L.; Inman, Tracy F.

2012-01-01

386

Rewards, Intrinsic Motivation, and Achievement in Intact Classrooms  

ERIC Educational Resources Information Center

The purpose of this study was to examine the effects of performance-contingent rewards in a real-world setting, namely the sixth grade math classroom. This study is significant in that it represents a field study on the effects of rewards in the classroom. The purpose of this study was to investigate what effect, if any, the choice of a reward had…

Luis, Melissa Ann

2011-01-01

387

Classroom Crisis Intervention through Contracting: A Moral Development Model.  

ERIC Educational Resources Information Center

|A counselor can arbitrate problem situations using a systematic approach to classroom intervention which includes meetings with the teacher and students. This crisis intervention model based on moral development can be more effective than reliance on guidance activities disconnected from the actual classroom settings where the problems arise.…

Smaby, Marlowe H.; Tamminen, Armas W.

1981-01-01

388

Oral Feedback in Classroom SLA: A Meta-Analysis  

ERIC Educational Resources Information Center

To investigate the pedagogical effectiveness of oral corrective feedback (CF) on target language development, we conducted a meta-analysis that focused exclusively on 15 classroom-based studies (N = 827). The analysis was designed to investigate whether CF was effective in classroom settings and, if so, whether its effectiveness varied according…

Lyster, Roy; Saito, Kazuya

2010-01-01

389

Classroom Application of a Trial-Based Functional Analysis  

ERIC Educational Resources Information Center

|We evaluated a trial-based approach to conducting functional analyses in classroom settings. Ten students referred for problem behavior were exposed to a series of assessment trials, which were interspersed among classroom activities throughout the day. Results of these trial-based functional analyses were compared to those of more traditional…

Bloom, Sarah E.; Iwata, Brian A.; Fritz, Jennifer N.; Roscoe, Eileen M.; Carreau, Abbey B.

2011-01-01

390

EFL Teachers' Language Use for Classroom Discipline: A Look at Complex Interplay of Variables  

ERIC Educational Resources Information Center

The issue of classroom management in the English as a foreign language (EFL) setting has not been addressed adequately despite teachers' views of it as constituting one of their prioritized tasks. Among the aspects of classroom management, in particular, classroom discipline seems to warrant research focus because it contributes to "smooth and…

Kang, Dae-Min

2013-01-01

391

Required Changes in the Classroom Environment: It's a Matter of Design  

ERIC Educational Resources Information Center

The New York City Department of Education has recently set forth new mandates for the redesign of classrooms. Teachers must be taught how to redesign their classrooms correctly so that all students will be provided with the necessary space to accommodate their environmental learning-style preferences. By altering the classroom, teachers give some…

Burke, Karen; Burke-Samide, Barbara

2004-01-01

392

The Influence of a Technology-rich Classroom Environment on Elementary Teachers' Pedagogy and Children's Learning  

Microsoft Academic Search

Our goal is to investigate the role of ICT within the complex inter-relationships amongst aspects of the classroom setting which contribute to young children's activity and learning. This paper focuses on the relationships between the many different features of the classroom which influence learning. These include the teacher's plans and classroom organisation, the way in which the teacher mediates subject

Steve Kennewell; Gary Beauchamp

393

EFL Teachers' Language Use for Classroom Discipline: A Look at Complex Interplay of Variables  

ERIC Educational Resources Information Center

|The issue of classroom management in the English as a foreign language (EFL) setting has not been addressed adequately despite teachers' views of it as constituting one of their prioritized tasks. Among the aspects of classroom management, in particular, classroom discipline seems to warrant research focus because it contributes to "smooth and…

Kang, Dae-Min

2013-01-01

394

Classroom Management That Works: Research-Based Strategies for Every Teacher.  

ERIC Educational Resources Information Center

|This book analyzes research from more than 100 studies on classroom management to assess how classroom management affects student achievement, techniques that teachers find most effective, and how important schoolwide policies and practices are in setting the tone for individual classroom management. Findings are applied to a series of action…

Marzano, Robert J.

395

Preparing general educators to teach in inclusive classrooms: Some food for thought  

Microsoft Academic Search

Teacher education programs designed to prepare general education classroom teachers to teach in classrooms that include students with disabilities should be developed based on current research into the variables that are key to the successful inclusion of students with disabilities in general education classroom settings. The authors attempt to build a bridge from research to practice by describing one such

Paula J. Stanovich; Anne Jordan

2002-01-01

396

Antecedent Classroom Factors and Disruptive Behaviors of Children with Autism Spectrum Disorders  

Microsoft Academic Search

This study examined relationships between antecedent classroom factors and the disruptive behaviors of five elementary-aged students with autism spectrum disorders (ASD). A descriptive analysis was conducted to determine the influence of four types of molar antecedent classroom factors (i.e., instructional setting, instructional activity, availability of materials, and adult proximity) occurring within the general education classroom on target children's disruptive behavior.

Maureen A. Conroy; Jennifer M. Asmus; Brian A. Boyd; Crystal N. Ladwig; Jennifer A. Sellers

2007-01-01

397

Supporting Students' Strategic Competence: A Case of a Sixth-Grade Mathematics Classroom  

ERIC Educational Resources Information Center

|Mathematics education research has documented several classroom practices that might influence student self-regulation. We know little, however, about the ways these classroom practices could be structured in real classroom settings. In this exploratory case study, we purposefully selected a sixth-grade mathematics teacher who had participated in…

Ozdemir, I. Elif Yetkin; Pape, Stephen J.

2012-01-01

398

Calling All Classrooms.  

ERIC Educational Resources Information Center

Presents examples of innovative public/private partnerships that have successfully provided affordable telephone access to school classrooms. Contact information for each of the programs is provided. (GR)

Sturgeon, Julie

1999-01-01

399

The Classroom Animal.  

ERIC Educational Resources Information Center

|Provides background information on the earthworm. Reviews basic anatomical, behavioral, and reproductive facts. Offers suggestions for procuring, maintaining, and breeding colonies for classroom use. (ML)|

Science and Children, 1986

1986-01-01

400

Considering the Chalkless Classroom  

ERIC Educational Resources Information Center

|This article shares some personal reflections on several years of integrating educational technology into mathematics courses while retaining the direct interaction strengths of the traditional classroom.|

Ellis-Monaghan, Joanna A.

2010-01-01

401

Near-dissociation expansion representation of large spectroscopic data sets: The B(3?0u+ <-- X(1?g+) system of I2  

NASA Astrophysics Data System (ADS)

The utility of near-dissociation expansion (NDE) functions for efficiently representing large spectroscopic data sets is demonstrated by an application to 14712 lines of the visible B-X absorption spectrum of I2. In addition to providing a more compact representation of the input data than is obtainable using traditional methods, this approach has a unique ability to provide reliable predictions for vibrational levels lying above the highest one observed. Considerations governing choice of the number of parameters to include in an expansion and of the number of significant digits to quote for each of the resulting parameters are critically discussed.

Tromp, John W.; Le Roy, Robert J.

1985-02-01

402

Performance of multicomponent self-organizing regression (MCSOR) in QSAR, QSPR, and multivariate calibration: comparison with partial least-squares (PLS) and validation with large external data sets.  

PubMed

A novel method for underdetermined regression problems, multicomponent self-organizing regression (MCSOR), has been recently introduced. Here, its performance is compared with partial least-squares (PLS), which is perhaps the most widely adopted multivariate method in chemometrics. A potpourri of models is presented, and MCSOR appears to provide highly predictive models that are comparable with or better than the corresponding PLS models in large internal (leave-one-out, LOO) and pseudo-external (leave-many-out, LMO) validation tests. The "blind" external predictive ability of MCSOR and PLS is demonstrated employing large melting point, factor Xa, log P and log S data sets. In a nutshell, MCSOR is fast, conceptually simple (employing multiple linear regression, MLR, as a statistical tool), and applicable to all kinds of multivariate problems with single Y-variable. PMID:17162386

Tuppurainen, K; Korhonen, S-P; Ruuskanen, J

2006-12-01

403

Relation between language experiences in preschool classrooms and children's kindergarten and fourth-grade language and reading abilities.  

PubMed

Indirect effects of preschool classroom indexes of teacher talk were tested on fourth-grade outcomes for 57 students from low-income families in a longitudinal study of classroom and home influences on reading. Detailed observations and audiotaped teacher and child language data were coded to measure content and quantity of verbal interactions in preschool classrooms. Preschool teachers' use of sophisticated vocabulary during free play predicted fourth-grade reading comprehension and word recognition (mean age=9; 7), with effects mediated by kindergarten child language measures (mean age=5; 6). In large group preschool settings, teachers' attention-getting utterances were directly related to later comprehension. Preschool teachers' correcting utterances and analytic talk about books, and early support in the home for literacy predicted fourth-grade vocabulary, as mediated by kindergarten receptive vocabulary. PMID:21413936

Dickinson, David K; Porche, Michelle V

2011-03-17

404

Tectonic stress inversion of large multi-phase fracture data sets: application of Win-Tensor to reveal the brittle tectonic history of the Lufilan Arc, DRC  

NASA Astrophysics Data System (ADS)

Large fault-slip data sets from multiphase orogenic regions present a particular challenge in paleostress reconstructions. The Lufilian Arc is an arcuate fold-and-thrust belt that formed during the late Pan-African times as the result of combined N-S and E-W amalgamation of Gondwana in SE-DRCongo and N-Zambia. We studied more than 22 sites in the Lufilian Arc, and its foreland and correlated the results obtained with existing result in the Ubende belt of W-Tanzania. Most studied sites are characterized by multiphase brittle deformation in which the observed brittle structures are the result of progressive saturation of the host rock by neoformed fractures and the reactivation of early formed fractures. They correspond to large mining exploitations with multiple large and continuous outcrops that allow obtaining datasets sufficiently large to be of statistical significance and often corresponding to several successive brittle events. In this context, the reconstruction of tectonic stress necessitates an initial field-base separation of data, completed by a dynamic separation of the original data set into subsets. In the largest sites, several parts of the deposits have been measured independently and are considered as sub-sites that are be processed separately in an initial stage. The procedure used for interactive fault-slip data separation and stress inversion will be illustrated by field examples (Luiswishi and Manono mining sites). This principle has been applied to all result in the reconstruction of the brittle tectonic history of the region, starting with two major phases of orogenic compression, followed by late orogenic extension and extensional collapse. A regional tectonic inversion during the early Mesozoic, as a result of far- field stresses mark the transition towards rift-related extension. More details in Kipata, Delvaux et al.(2013), Geologica Belgica 16/1-2: 001-017 Win-Tensor can be downloaded at: http://users.skynet.be/damien.delvaux/Tensor/tensor-index.html

Delvaux, Damien; Kipata, Louis; Sintubin, Manuel

2013-04-01

405

A geometrical correction for the inter- and intra-molecular basis set superposition error in Hartree-Fock and density functional theory calculations for large systems.  

PubMed

A semi-empirical counterpoise-type correction for basis set superposition error (BSSE) in molecular systems is presented. An atom pair-wise potential corrects for the inter- and intra-molecular BSSE in supermolecular Hartree-Fock (HF) or density functional theory (DFT) calculations. This geometrical counterpoise (gCP) denoted scheme depends only on the molecular geometry, i.e., no input from the electronic wave-function is required and hence is applicable to molecules with ten thousands of atoms. The four necessary parameters have been determined by a fit to standard Boys and Bernadi counterpoise corrections for Hobza's S66×8 set of non-covalently bound complexes (528 data points). The method's target are small basis sets (e.g., minimal, split-valence, 6-31G*), but reliable results are also obtained for larger triple-? sets. The intermolecular BSSE is calculated by gCP within a typical error of 10%-30% that proves sufficient in many practical applications. The approach is suggested as a quantitative correction in production work and can also be routinely applied to estimate the magnitude of the BSSE beforehand. The applicability for biomolecules as the primary target is tested for the crambin protein, where gCP removes intramolecular BSSE effectively and yields conformational energies comparable to def2-TZVP basis results. Good mutual agreement is also found with Jensen's ACP(4) scheme, estimating the intramolecular BSSE in the phenylalanine-glycine-phenylalanine tripeptide, for which also a relaxed rotational energy profile is presented. A variety of minimal and double-? basis sets combined with gCP and the dispersion corrections DFT-D3 and DFT-NL are successfully benchmarked on the S22 and S66 sets of non-covalent interactions. Outstanding performance with a mean absolute deviation (MAD) of 0.51 kcal/mol (0.38 kcal/mol after D3-refit) is obtained at the gCP-corrected HF-D3/(minimal basis) level for the S66 benchmark. The gCP-corrected B3LYP-D3/6-31G* model chemistry yields MAD=0.68 kcal/mol, which represents a huge improvement over plain B3LYP/6-31G* (MAD=2.3 kcal/mol). Application of gCP-corrected B97-D3 and HF-D3 on a set of large protein-ligand complexes prove the robustness of the method. Analytical gCP gradients make optimizations of large systems feasible with small basis sets, as demonstrated for the inter-ring distances of 9-helicene and most of the complexes in Hobza's S22 test set. The method is implemented in a freely available FORTRAN program obtainable from the author's website. PMID:22519309

Kruse, Holger; Grimme, Stefan

2012-04-21

406

Methodologic implications of social inequalities for analyzing health disparities in large spatiotemporal data sets: an example using breast cancer incidence data (Northern and Southern California, 1988--2002).  

PubMed

Efforts to monitor, investigate, and ultimately eliminate health disparities across racial/ethnic and socioeconomic groups can benefit greatly from spatiotemporal models that enable exploration of spatial and temporal variation in health. Hierarchical Bayes methods are well-established tools in the statistical literature for fitting such models, as they permit smoothing of unstable small-area rates. However, issues presented by 'real-life' surveillance data can be a barrier to routine use of these models by epidemiologists. These include (1) shifting of regional boundaries over time, (2) social inequalities in racial/ethnic residential segregation, which imply differential spatial structuring across different racial/ethnic groups, and (3) heavy computational burdens for large spatiotemporal data sets. Using data from a study of changing socioeconomic gradients in female breast cancer incidence in two population-based cancer registries covering the San Francisco Bay Area and Los Angeles County, CA (1988--2002), we illustrate a two-stage approach to modeling health disparities and census tract (CT) variation in incidence over time. In the first stage, we fit race- and year-specific spatial models using CT boundaries normalized to the U.S. Census 2000. In stage 2, temporal patterns in the race- and year-specific estimates of racial/ethnic and socioeconomic effects are explored using a variety of methods. Our approach provides a straightforward means of fitting spatiotemporal models in large data sets, while highlighting differences in spatial patterning across racial/ethnic population and across time. PMID:18551507

Chen, Jarvis T; Coull, Brent A; Waterman, Pamela D; Schwartz, Joel; Krieger, Nancy

2008-09-10

407

Consistency of Toddler Engagement across Two Settings  

ERIC Educational Resources Information Center

|This study documented the consistency of child engagement across two settings, toddler child care classrooms and mother-child dyadic play. One hundred twelve children, aged 14-36 months (M = 25.17, SD = 6.06), randomly selected from 30 toddler child care classrooms from the district of Porto, Portugal, participated. Levels of engagement were…

Aguiar, Cecilia; McWilliam, R. A.

2013-01-01

408

Constructing a Bilingual Professional Identity in a Graduate Classroom  

Microsoft Academic Search

This article explores the construction of a bilingual professional identity in a bilingual creative-writing graduate program in southwest Texas by analyzing a classroom event and the participants' interpretation of it. In bilingual classrooms the resources available to construct professional identities include a large repertoire of linguistic practices and cultural frames. This context provides a space to explore how language, power,

Mariana Achugar

2009-01-01

409

Going green: paperless technology and feedback from the classroom  

Microsoft Academic Search

The purpose of this study is to measure the following: student satisfaction with the paperless classroom; student satisfaction with paperless feedback; and costs savings as a result of the paperless classroom. Traditionally, software courses are paper-intensive because of the large amount of assignments being submitted for grading by students. In an effort to \\

Janna Arney; Irma Jones; Angela Wolf

410

Examining and disrupting rituals of practice in the primary classroom  

Microsoft Academic Search

Much of what happens in primary classrooms reflects a number of rituals and routines that have largely become an unconscious part of teachers’ repertoires. While these ‘rituals of practice’ provide a framework or structure to learning in classrooms, they are often left unexamined. These taken-for-granted ways of teaching require close examination in order to ascertain their merit or otherwise for

Deborah Fraser; Clare Henderson; Graham Price; Viv Aitken; Sue Cheesman; Fiona Bevege; Amanda Klemick; Lisa Rose; Shirley Tyson

2009-01-01

411

Examining and Disrupting Rituals of Practice in the Primary Classroom  

ERIC Educational Resources Information Center

|Much of what happens in primary classrooms reflects a number of rituals and routines that have largely become an unconscious part of teachers' repertoires. While these "rituals of practice" provide a framework or structure to learning in classrooms, they are often left unexamined. These taken-for-granted ways of teaching require close examination…

Fraser, Deborah; Henderson, Clare; Price, Graham; Aitken, Viv; Cheesman, Sue; Bevege, Fiona; Klemick, Amanda; Rose, Lisa; Tyson, Shirley

2009-01-01

412

Color Your Classroom VII: A Curriculum Guide for Learning Centers.  

ERIC Educational Resources Information Center

|This guide provides illustrated examples of classroom learning centers designed for use with migrant students. Designating learning centers in the classroom is an effective way to introduce, develop, and reinforce skills in an enjoyable way. The learning centers described in this guide can be made from: (1) fabric boards (large); (2) fabric…

Mississippi Materials & Resource Center, Gulfport.

413

Frontloading Classroom Management  

ERIC Educational Resources Information Center

In this article, the authors describe a systematic approach to planning for the first days of school that is appropriate for today's demanding high school science classrooms. These strategies apply to any science subject and benefit student teachers, new teachers, and those teachers wishing to improve their classroom management skills. (Contains 3…

Roscoe, Keith; Orr, Kim

2010-01-01

414

The City as Classroom.  

ERIC Educational Resources Information Center

The author gives a rationale for utilizing the city as a place to learn. The city has many problems and although logistics require that we conduct most education in the school building, the author argues for putting out best brains to the task of bringing the city to the classroom and to exploiting the city as a classroom when appropriate.…

Bailey, Stephen K.

415

Promoting Classroom Technology Use  

ERIC Educational Resources Information Center

The purpose of this study was to test two hypotheses: (1) that participation in a course providing theory and practice in the classroom use of technology promotes its use and results in gained competence in technology use; and (2) that functional relations exist among the availability of technology in the classroom, technology utilization, and…

Rosenfeld, Barbara; Martinez-Pons, Manuel

2005-01-01

416

General Classroom Space.  

ERIC Educational Resources Information Center

|Illustrates how a Utah school district created classroom learning environments in their elementary schools that prepared students for life-long learning by teaching them in a collaborative, interactive, hands-on way. Arrangement of classrooms as learning centers that foster a team atmosphere are stressed. (GR)|

Crane, Steve

2001-01-01

417

Speaking in the Classroom  

ERIC Educational Resources Information Center

Too much speaking and indiscipline in class is an on-going problem for any teacher, it is at its least disruptive and at most it destroys a good positive classroom atmosphere. This article recognizes this and continues this debate and suggests key clues to support teachers in their efforts to maintain a positive classroom atmosphere and discipline…

McBain, Robert

2011-01-01

418

Technology and Classroom Practices  

Microsoft Academic Search

Abstract This study examines the findings from 174 case studies of innovative pedagogical practices using technology from 28 participatingcountries. The study looks at how classrooms world- wide are using technology to change the practices of teachers and students. Within many of these classrooms, the use of technologicaltools and resources supports students as they search for information, design products, and publish

An Internationals Tudy; Robert B. Kozma

419

Differentiating Classroom Guidance  

ERIC Educational Resources Information Center

|To differentiate is to make different, distinct, or specialized (Costello, 1994). Differentiation has become popular in education as an instructional philosophy aimed at equitably meeting the learning needs of all students in the classroom. Differentiated planning and delivery of classroom guidance is also necessary for appropriate school…

Akos, Patrick; Cockman, Caroline R.; Strickland, Cindy A.

2007-01-01

420

Classroom Visitations Done Well  

ERIC Educational Resources Information Center

|It is essential that before a school or district begins a classroom visitation program, everybody is clear about what to expect and what their role is to be in the process. The purpose of this article is to establish a typology of classroom visitations that might help schools and districts to achieve that clarity. Implemented well, each of the…

Bloom, Gary

2007-01-01

421

Talk in the Classroom.  

ERIC Educational Resources Information Center

Explains that the amount and quality of talk in the classroom directly affects student achievement and describes how to avoid the initiation-response-evaluation pattern by asking open-ended questions, igniting rich conversations, and increasing wait time with students. The paper also includes Internet resources for boosting talk in the classroom,…

Power, Brenda

2001-01-01

422

Frontloading Classroom Management  

ERIC Educational Resources Information Center

|In this article, the authors describe a systematic approach to planning for the first days of school that is appropriate for today's demanding high school science classrooms. These strategies apply to any science subject and benefit student teachers, new teachers, and those teachers wishing to improve their classroom management skills. (Contains…

Roscoe, Keith; Orr, Kim

2010-01-01

423

CLASSROOM MANAGEMENT: CORRECTIVE STRATEGIES  

Microsoft Academic Search

Classroom management requires an orchestration of effective teaching, proactive preventive strategies, practical corrective strategies, and positive supportive techniques. This approach helps teachers motivate students through active involment in their own learning and discipline processes with the goals of acquiring learning, self-management, and a repertoire of responsible behaviors. When these components are integrated in your classroom, effective teaching, management, and discipline

Patricia Kyle; Larry Rogien

424

Classroom Management in Action  

Microsoft Academic Search

Veryoftenstudent-teachershavedifficultyintransferringdeclarativeknowledgeintoprocedural? knowledge. When they are taking a practical course like EDUC 4120 Classroom Management, they find it difficult to apply the theories that they have learned in the course directly to their teaching practice because real-world classroom management problems are far more complicated. To bridge the gap between theory and practice, a videotape recording entitled \\

Kwok Hung; Siu Wing

425

Science beyond the classroom  

Microsoft Academic Search

Not every student is meant to be a scientist. Students come into a classroom with a variety of experiences, interests, and abilities. Therefore, the goal of any science program is not the production of chemists, physicists, or biologists but the development of scientifically literature individuals: students who can question, hypothesize, test, record, and conclude. The classroom environment cannot always provide

J. Petric; J. Bonkalski

1992-01-01

426

Teacher Classroom Management Practices: Effects on Disruptive or Aggressive Student Behavior  

ERIC Educational Resources Information Center

Despite the large research base grounded in behavioral theory for strategies to increase appropriate behavior and prevent or decrease inappropriate behavior in the classroom, a systematic review of multi-component universal classroom management research is necessary to establish the effects of teachers' universal classroom management approaches.…

Oliver, Regina M.; Wehby, Joseph H.; Reschly, Daniel J.

2011-01-01

427

The ActiveClass Project: Experiments in Encouraging Classroom Participation  

Microsoft Academic Search

Participation in classroom settings decreases with class size and di- versity, thus creating passive modes of learning, due to feelings of shyness, peer pressure, and the like. Computing technology can help by creating a \\

Tan Minh Truong; William G. Griswold; Matthew Ratto

2003-01-01

428

Nonaversive Procedures in the Treatment of Classroom Behavior Problems.  

ERIC Educational Resources Information Center

|The synthesis of 35 single-subject nonaversive treatments of classroom behavior problems indicated that reinforcement and feedback are highly effective as a remedy across a variety of behaviors, settings, and administrative arrangements. (Author/DB)|

Skiba, Russell J.; And Others

1986-01-01

429

Transforming Classroom Culture: Inclusive Pedagogical Practices  

ERIC Educational Resources Information Center

|"Transforming Classroom Culture" is an anthology of original work authored by diverse faculty who work in a variety of New England college and university settings--private and public, racially homogeneous and diverse. The authors focus on institutional contexts that promote innovation in teaching practice, faculty identity as a resource for…

Dallalfar, Arlene, Ed.; Kingston-Mann, Esther, Ed.; Sieber, Tim, Ed.

2011-01-01

430

Classroom Management Challenges in the Dance Class  

ERIC Educational Resources Information Center

Teaching dance can be a challenge because of the unique classroom-management situations that arise from the dynamic nature of the class content. Management is a delicate navigation of advance planning; rule setting; the establishment and implementation of daily protocols, routines, and interventions; and the teacher's own presentation. This…

Clark, Dawn

2007-01-01

431

Developing and Using Classroom Assessments. Second Edition.  

ERIC Educational Resources Information Center

This book provides a succinct discussion of the development and use of classroom assessments. It is designed for college courses and settings in which a full survey textbook is not appropriate in terms of coverage and cost, such as educational psychology or teaching methods courses or self-study by teachers. The chapters are: (1) "Introduction";…

Oosterhof, Albert

432

Mars Activities: Teacher Resources and Classroom Activities  

NSDL National Science Digital Library

This set of classroom activities presents the challenges of operating a planetary rover, how to construct a scale model of the Earth-Moon system, how Martian surface core samples can be identified and what they tell us about Mars. Each activity comes with clearly delineated instructions, associated standards, guides and worksheets, and enhancement materials.

Laboratory, Jet P.; Arizona State University, Mars E.

433

Harnessing mobile devices in the classroom.  

PubMed

This column describes the use of mobile devices in the classroom to support nurses' competency in information literacy. Nurses, as knowledge workers, require competency in information literacy and mobile technology to access accurate and current information promptly in practice settings. PMID:23181405

Smith, Charlene M

2012-12-01

434

Accountable game designs for classroom learning  

Microsoft Academic Search

A simple yet powerful design strategy for leveraging children's natural proclivity to play has been to tie educational content to the rules of a game. A common criticism of many game designs used in classroom settings however, is that they fail to meaningfully embody content. Another, more subtle problem, is that design elements such as chance and skill; competitive versus

Timothy Charoenying

2008-01-01

435

Dynamic Assessment in the Language Classroom  

ERIC Educational Resources Information Center

|The focus of this paper is on the implementation of Dynamic Assessment (henceforth, DA) in the L2 classroom setting. DA is an approach to assessment and instruction derived from Vygotsky's theory of the Zone of Proximal Development (henceforth, ZPD). In what follows, we will first discuss briefly the concept of the ZPD and its realization in DA…

Poehner, Matthew E.; Lantolf, James P.

2005-01-01

436

Collaborative Learning in a Virtual Classroom  

NSDL National Science Digital Library

This website features an article describing a study which shows that effective communication is not happening in the virtual classroom. This failure appears to be fragmenting learning communities and causing feelings of isolation and confusion among some students. The article offers a set of fourteen pilot guidelines to help address this issue.

Richardson, Julie A.; Turner, Anthony; Lab, Stanford L.

437

Essentials of Classroom Teaching: Elementary Reading Methods.  

ERIC Educational Resources Information Center

|Designed to be informative, helpful, and manageable, as well as selective, this book describes reading instruction which has been found to be the most effective for all students. The book presents information shown by research, classroom experience, and common sense to be the most important for setting up and maintaining an effective reading…

Graves, Michael F.; And Others

438

Nationalism in Geography Classrooms: Challenges and Opportunities  

ERIC Educational Resources Information Center

This set of essays is based on a panel session convened at the 2009 meeting of the Association of American Geographers, which sought to explore the many challenges and pitfalls involved with teaching nationalism as a topic in geography classrooms. The authors offer different but complementary insights into the practical difficulties and potential…

Schlosser, Kolson; White, George; Leib, Jonathan; Dalby, Simon; Algeo, Katie; Jansson, David; Zimmerman, Jackson

2011-01-01

439

Using Readers' Theatre in the Classroom.  

ERIC Educational Resources Information Center

Reader's Theatre can be used to combine basic literature and writing instruction with creative arts. Improvisational playmaking by students, using literature in the form of plays, prose, and poetry, forms the basis of Reader's Theatre. Use of Reader's Theatre in the classroom can: (1) foster deeper understanding of character, setting, and plot…

Annarella, Lorie A.

440

Transforming Classroom Culture: Inclusive Pedagogical Practices  

ERIC Educational Resources Information Center

"Transforming Classroom Culture" is an anthology of original work authored by diverse faculty who work in a variety of New England college and university settings--private and public, racially homogeneous and diverse. The authors focus on institutional contexts that promote innovation in teaching practice, faculty identity as a resource for…

Dallalfar, Arlene, Ed.; Kingston-Mann, Esther, Ed.; Sieber, Tim, Ed.

2011-01-01

441

Use of a classroom response system to enhance classroom interactivity  

Microsoft Academic Search

Classroom interactivity is a critical component of teaching and learning. This paper reports on the use of a classroom response system to enhance classroom interactivity in a systems analysis and design course. The success of the project was assessed using both quantitative and qualitative data. A pretest\\/posttest design was used to examine the effects of a classroom response system on

Keng Siau; Hong Sheng; F. F.-H. Nah

2006-01-01

442

Observed Classroom Quality Profiles of Kindergarten Classrooms in Finland  

ERIC Educational Resources Information Center

|Research Findings: The aim of the present study was to examine classroom quality profiles of kindergarten classrooms using a person-centered approach and to analyze these patterns in regard to teacher and classroom characteristics. Observations of the domains of Emotional Support, Classroom Organization, and Instructional Support were conducted…

Salminen, Jenni; Lerkkanen, Marja-Kristiina; Poikkeus, Anna-Maija; Pakarinen, Eija; Siekkinen, Martti; Hannikainen, Maritta; Poikonen, Pirjo-Liisa; Rasku-Puttonen, Helena

2012-01-01

443

Classroom Management and Students' Perceptions of Classroom Climate  

ERIC Educational Resources Information Center

|The impact of classroom management and the impact of classroom climate on student academic achievement has been independently documented by scholars. Less is currently know regarding the relationship linking classroom management and climate. Therefore, the purpose of this quasi experimental study was to explore the influence of classroom

Ratzburg, Susan A.

2010-01-01

444

Managing Your Classroom for Success  

ERIC Educational Resources Information Center

|Effective teachers view classroom management as a process of organizing and structuring classroom events for student learning. Creating a well-managed classroom with established procedures is the priority of a teacher the first two weeks of school. In an elementary classroom where each day may have a different array of subjects and at different…

Wong, Harry; Wong, Rosemary; Rogers, Karen; Brooks, Amanda

2012-01-01

445

Classroom Research by Classroom Teachers, 1992.  

ERIC Educational Resources Information Center

This volume celebrates teachers as life-long learners of the art of teaching, by presenting 21 action research studies designed and implemented by classroom teachers. A "How To Get Started" section outlines action research steps and offers worksheets. Descriptions of the research studies begin with ethnographic studies, which include "Adopt a…

Tanner, Michael, Ed.

1992-01-01

446

Redefining classroom instruction.  

PubMed

In this study, the role of the classroom instructor was redefined from a "lecturer" responsible for delivering the core curriculum to a "facilitator" at the center of an active learning environment. Web-based lectures were used to provide foundation content to students outside of the classroom, which made it possible to improve the quality of student-faculty contact time in the classroom. Students reported that this hybrid format of instruction afforded them a better understanding of the content, a higher probability of retaining the content, and the opportunity to spend more time thinking about the application of the content compared with more traditional lecture-based methods of instruction. PMID:16912147

Goldberg, Harry R; Haase, Eileen; Shoukas, Artin; Schramm, Lawrence

2006-09-01

447

Animals in Schools and Daycare Settings  

MedlinePLUS

... to... Añadir en... Favorites Delicious Digg Google Bookmarks Animals in Schools and Daycare Settings Animals can provide ... school and daycare classrooms. Gastrointestinal (Enteric) Diseases from Animals Check out CDC’s Gastrointestinal (Enteric) Diseases from Animals ...

448

Discovering Students' Voices in Teachers' Classroom Inquiry.  

ERIC Educational Resources Information Center

This study is part of a large project on teacher research and professional development in progress in the Teacher Enhancement Program (TEP), a collaborative mid-career program between the University of New Mexico and local public schools. The objective of the study was to describe teachers' engagement in classroom inquiry and the transformative…

Torres, Myriam N.

449

Comparison of Students' Satisfaction and Dissatisfaction Factors in Different Classroom Types in Higher Education  

Microsoft Academic Search

\\u000a Effective classroom learning requires a good learning environment integrated with quality teaching, quality course content,\\u000a and a collaborative approach towards learning. This study sets out to examine the drivers of student satisfaction and dissatisfaction\\u000a in the three classroom settings common to higher education: face-to-face, Web-based, and blended classrooms. The Critical\\u000a Incident Technique was used to collect data and to form

Fong-Ling Fu

2010-01-01

450

Innovations in Classroom Organization.  

National Technical Information Service (NTIS)

The paper discusses several cases of attempts to implement fundamental changes in classroom organization by local school districts. These cases were examined as part of the Rand Change Agent Study. It focuses on the problems particular to adaptive and ind...

M. W. McLaughlin

1975-01-01

451

Frontiers in the Classroom.  

ERIC Educational Resources Information Center

|Provides examples of ways to use the television show "Scientific American Frontiers" in the classroom. Outlines a range of approaches and discusses some motivational techniques to engage students. (DDR)|

Coyne, Janet Smith

1998-01-01

452

Critters in the Classroom.  

ERIC Educational Resources Information Center

|The use of invertebrates as classroom "pets" can develop students' skills in scientific inquiry and instill respect for science. Few materials are needed for projects involving invertebrates. Suggested activities using snails, crickets, earthworms, crayfish, and guppies are offered. (DF)|

Smith, Robert W.; Fleisher, Paul

1984-01-01

453

Classroom Assessment Techniques (CATs)  

NSDL National Science Digital Library

This site provides information on various classroom assessment techniques (CATs) such as primary trait analysis, using anonymous assessments, goal ranking and matching, self assessment, active learning, transfer and applied learning, and group work assessment.

2010-06-25

454

Toys in The Classroom  

ERIC Educational Resources Information Center

A number of chemical concepts can be easily illustrated in a more friendly way to children by using toys as teaching tools in the classroom. Some of the examples illustrated are shrinking toys, drinking birds and hand boiler.

Sarquis, Jerry L.; Sarquis, Arlyne M.

2005-01-01

455

Craters in the Classroom.  

ERIC Educational Resources Information Center

|Details an activity in which students create and study miniature impact craters in the classroom. Engages students in making detailed, meaningful observations, drawing inferences, reaching conclusions based on scientific evidence, and designing experiments to test selected variables. (DDR)|

McArdle, Heather K.

1997-01-01

456

Climatic Conditions in Classrooms.  

ERIC Educational Resources Information Center

|Presents an overview of research on the ways in which classroom thermal environment, lighting conditions, ion state, and electromagnetic and air pollution affect learning and the performance of students and teachers. (SJL)|

Kevan, Simon M.; Howes, John D.

1980-01-01

457

Natural Resources: Outdoor Classrooms  

NSDL National Science Digital Library

An outdoor classroom is the ideal vehicle for community involvement: Parents, native plant societies, 4-H, garden clubs, and master naturalists are all resources waiting to be tapped, as are local businesses offering support. If you enlist your community

Mayes, Valynda

2010-02-01

458

Film Excerpts Shown to Specifically Elicit Various Affects Lead to Overlapping Activation Foci in a Large Set of Symmetrical Brain Regions in Males  

PubMed Central

While the limbic system theory continues to be part of common scientific parlance, its validity has been questioned on multiple grounds. Nonetheless, the issue of whether or not there exists a set of brain areas preferentially dedicated to emotional processing remains central within affective neuroscience. Recently, a widespread neural reference space for emotion which includes limbic as well as other regions was characterized in a large meta-analysis. As methodologically heterogeneous studies go into such meta-analyses, showing in an individual study in which all parameters are kept constant, the involvement of overlapping areas for various emotion conditions in keeping with the neural reference space for emotion, would serve as valuable confirmatory evidence. Here, using fMRI, 20 young adult men were scanned while viewing validated neutral and effective emotion-eliciting short film excerpts shown to quickly and specifically elicit disgust, amusement, or sexual arousal. Each emotion-specific run included, in random order, multiple neutral and emotion condition blocks. A stringent conjunction analysis revealed a large overlap across emotion conditions that fit remarkably well with the neural reference space for emotion. This overlap included symmetrical bilateral activation of the medial prefrontal cortex, the anterior cingulate, the temporo-occipital junction, the basal ganglia, the brainstem, the amygdala, the hippocampus, the thalamus, the subthalamic nucleus, the posterior hypothalamus, the cerebellum, as well as the frontal operculum extending towards the anterior insula. This study clearly confirms for the visual modality, that processing emotional stimuli leads to widespread increases in activation that cluster within relatively confined areas, regardless of valence.

Karama, Sherif; Armony, Jorge; Beauregard, Mario

2011-01-01

459

Film excerpts shown to specifically elicit various affects lead to overlapping activation foci in a large set of symmetrical brain regions in males.  

PubMed

While the limbic system theory continues to be part of common scientific parlance, its validity has been questioned on multiple grounds. Nonetheless, the issue of whether or not there exists a set of brain areas preferentially dedicated to emotional processing remains central within affective neuroscience. Recently, a widespread neural reference space for emotion which includes limbic as well as other regions was characterized in a large meta-analysis. As methodologically heterogeneous studies go into such meta-analyses, showing in an individual study in which all parameters are kept constant, the involvement of overlapping areas for various emotion conditions in keeping with the neural reference space for emotion, would serve as valuable confirmatory evidence. Here, using fMRI, 20 young adult men were scanned while viewing validated neutral and effective emotion-eliciting short film excerpts shown to quickly and specifically elicit disgust, amusement, or sexual arousal. Each emotion-specific run included, in random order, multiple neutral and emotion condition blocks. A stringent conjunction analysis revealed a large overlap across emotion conditions that fit remarkably well with the neural reference space for emotion. This overlap included symmetrical bilateral activation of the medial prefrontal cortex, the anterior cingulate, the temporo-occipital junction, the basal ganglia, the brainstem, the amygdala, the hippocampus, the thalamus, the subthalamic nucleus, the posterior hypothalamus, the cerebellum, as well as the frontal operculum extending towards the anterior insula. This study clearly confirms for the visual modality, that processing emotional stimuli leads to widespread increases in activation that cluster within relatively confined areas, regardless of valence. PMID:21818311

Karama, Sherif; Armony, Jorge; Beauregard, Mario

2011-07-27

460

The Effects of Physical Environmental Factors on Students’ Perceptions in Computer Classrooms  

Microsoft Academic Search

The environmental setting has a direct impact on perception, comfort, motivation, and concentration in learning environments. Accordingly, in computer classrooms, technological equipment and classroom settings can enhance psychological comfort and the learning environment. With this in mind, seemingly subtle differences in interior design\\/layout, as opposed to the larger matters of architectural design and floor-plan, were assumed to influence the perceptual

Kemal Yildirim; Aysen Capanoglu; Kubulay Cagatay

2011-01-01

461

Functional Analysis of a Large set of BRCA2 exon 7 Variants Highlights the Predictive Value of Hexamer Scores in Detecting Alterations of Exonic Splicing Regulatory Elements.  

PubMed

Exonic variants can alter pre-mRNA splicing either by changing splice sites or by modifying splicing regulatory elements. Often these effects are difficult to predict and are only detected by performing RNA analyses. Here, we analyzed, in a minigene assay, 26 variants identified in the exon 7 of BRCA2, a cancer predisposition gene. Our results revealed eight new exon skipping mutations in this exon: one directly altering the 5' splice site and seven affecting potential regulatory elements. This brings the number of splicing regulatory mutations detected in BRCA2 exon 7 to a total of 11, a remarkably high number considering the total number of variants reported in this exon (n = 36), all tested in our minigene assay. We then exploited this large set of splicing data to test the predictive value of splicing regulator hexamers' scores recently established by Ke et al. (). Comparisons of hexamer-based predictions with our experimental data revealed high sensitivity in detecting variants that increased exon skipping, an important feature for prescreening variants before RNA analysis. In conclusion, hexamer scores represent a promising tool for predicting the biological consequences of exonic variants and may have important applications for the interpretation of variants detected by high-throughput sequencing. PMID:23983145

Di Giacomo, Daniela; Gaildrat, Pascaline; Abuli, Anna; Abdat, Julie; Frébourg, Thierry; Tosi, Mario; Martins, Alexandra

2013-09-18

462

Absence of linkage of phonological coding dyslexia to chromosome 6p23-p21.3 in a large family data set.  

PubMed Central

Previous studies have suggested that a locus predisposing to specific reading disability (dyslexia) resides on chromosome 6p23-p21.3. We investigated 79 families having at least two siblings affected with phonological coding dyslexia, the most common form of reading disability (617 people genotyped, 294 affected), and we tested for linkage with the genetic markers reported to be linked to dyslexia in those studies. No evidence for linkage was found by LOD score analysis or affected-sib-pair methods. However, using the affected-pedigree-member (APM) method, we detected significant evidence for linkage and/or association with some markers when we used published allele frequencies with weighting of rarer alleles. APM results were not significant when we used marker allele frequencies estimated from parents. Furthermore, results were not significant with the more robust SIMIBD method using either published or parental marker frequencies. Finally, family-based association analysis using the AFBAC program showed no evidence for association with any marker. We conclude that the APM method should be used only with extreme caution, because it appears to have generated false-positive results. In summary, using a large data set with high power to detect linkage, we were unable to find evidence for linkage or association between phonological coding dyslexia and chromosome 6p markers.

Field, L L; Kaplan, B J

1998-01-01

463

Patterns in Children's Online Behavior and Scientific Problem-Solving: A LargeN Microgenetic  

Microsoft Academic Search

The purpose of this study is to investigate the viability of a computer-based system for collecting and analyzing data from large-N microgenetic studies of scientific reasoning. Most studies of children's scientific problem-solving strategies take place in classroom settings with established norms that homogenize student behavior. Small sample sizes and the limited range of settings limit the generalizability of the conclusions

David F. Feldon; Joanna Gilmore

464

Physical Therapy in Preschool Classrooms: Successful Integration of Therapy into Classroom Routines  

Microsoft Academic Search

Purpose: This exploratory investigation identifies factors that contribute to success of physical therapy services delivered in the context of the daily routines in preschool classroom settings. Methods: Ten pediatric physical therapists from rural and urban communities across North Carolina served as informants during telephone interviews. Results: Qualitative analysis of the data led to the identification of six major themes: interactions

Darlene Massey Sekerak; Dana B. Kirkpatrick; Kristal C. Nelson; June H. Propes

2003-01-01

465

Gender, Ethnicity, and Classroom Discourse: Communication Patterns of Hispanic and White Students in Networked Classrooms.  

ERIC Educational Resources Information Center

|Explores ethnic and gender differences in classroom conversational styles by comparing student involvement in face-to-face and computer-mediated discussions. Finds that white males participated more frequently than other groups in the face-to-face setting, and white women benefited more from computer-mediated communication. Notes Hispanic women…

Wolfe, Joanna

2000-01-01

466

Classroom and playground interaction of students with and without disabilities.  

PubMed

The classroom and playground behaviors of students with disabilities, in an integrated classroom, are frequently cited as reasons for rejection of these students by their regular-class peers. We compared the classroom and playground behavior of 95 students with mild disabilities with that of 95 students without disabilities, age and sex matched, and enrolled in the same classes. The children, age 8-13 years, attended state government elementary schools. Behaviors were observed using a time-sampling method with nine categories of behavior in each setting. The behavior of both groups of students was in many ways similar, regardless of the presence of disabilities. PMID:2149552

Roberts, C; Pratt, C; Leach, D

467

Teachers' Practical Knowledge about Classroom Management in Multicultural Classrooms  

ERIC Educational Resources Information Center

Creating a positive working atmosphere in the classroom is the first concern of many student and beginning teachers in secondary education. Teaching in multicultural classrooms provides additional challenges for these teachers. This study identified shared practical knowledge about classroom management strategies of teachers who were successful in…

van Tartwijk, Jan; den Brok, Perry; Veldman, Ietje; Wubbels, Theo

2009-01-01

468

Epistemological Syncretism in a Biology Classroom: A Case Study  

Microsoft Academic Search

In teaching science, the beliefs of teachers may come into conflict and inhibit the implementation of reformed teaching practice.\\u000a An experienced biology teacher, Mr. Hobbs, was found to have two different sets of epistemological beliefs while his classroom\\u000a practice was predominantly teacher-centered. A case study was then performed in order to investigate the underlying issues\\u000a that contributed to his classroom

William D. Bennett

2011-01-01

469

Classroom Assessment Techniques: Minute Paper  

NSDL National Science Digital Library

This page describes the minute paper, one of a series of Classroom Assessment Techniques (CATs) provided by the Field-tested Learning Assessment Guide (FLAG) website. The CATs of FLAG were constructed as a resource for science, technology, engineering and mathematics (STEM) instructors to emphasize deeper levels of learning and to give instructors valuable feedback during a course. The minute paper is a concise note, taking one minute and written by students, that focuses on a short question presented by the instructor to the class. It provides real-time feedback from a class to find out if students recognized the main points of a class session and also helps the instructor make changes for the next class. This site provides an overview of this assessment instrument including information about how to use minute papers in the classroom. The site is also linked to a set of discipline-specific "tools" that can be downloaded for immediate use, as well as supplementary links and sources to further explore this assessment tool.

Zeilik, Michael; The National Institute for Science Education; College Level One Team

470

Classroom Assessment Techniques: Mathematical Thinking  

NSDL National Science Digital Library

This page describes five ways to assess mathematical thinking skills. The assessment tool is one of a series of Classroom Assessment Techniques (CATs) provided by the Field-tested Learning Assessment Guide (FLAG) website. The CATs of FLAG were constructed as a resource for science, technology, engineering and mathematics (STEM) instructors to emphasize deeper levels of learning and to give instructors valuable feedback during a course. The Mathematical Thinking Classroom Assessment Techniques (Math CATs) are designed to promote and assess thinking skills in mathematics by checking results and correcting mistakes, making plausible estimates of quantities which are not known, modeling and defining new concepts, judging statements and creating proofs, and organizing unsorted data and drawing conclusions. An overview of this assessment instrument includes information about why Math CATs are beneficial to use and how to use them. This site is also linked to a set of discipline-specific "tools" that can be downloaded for immediate use, as well as supplementary links and sources to further explore this assessment tool.

Swan, Malcolm; Ridgway, Jim; The National Institute for Science Education; College Level One Team

471

The Dirt on Outdoor Classrooms.  

ERIC Educational Resources Information Center

|Explains the planning procedure for outdoor classrooms and introduces an integrated unit on monarch butterflies called the Monarch Watch program. Makes recommendations to solve financial problems of outdoor classrooms. (YDS)|

Rich, Steve

2000-01-01

472

Managing Inquiry-Based Classrooms  

NSDL National Science Digital Library

Though it may seem that classroom management comes naturally to some teachers, upon closer examination youâll probably discover that preparation and adaptation are more important than any innate ability when it comes to successful classroom management. Any experienced middle school science teacher can tell you that successful classroom management is an ongoing, evolving processâteachers need to modify their daily practices based on the observed behaviors and feedback of their students. This article describes some strategies to manage inquiry-based science classrooms effectively.

Wolfgang, Christie N.

2009-07-01

473

Managing Inquiry-Based Classrooms  

ERIC Educational Resources Information Center

Though it may seem that classroom management comes naturally to some teachers, upon closer examination you'll probably discover that preparation and adaptation are more important than any innate ability when it comes to successful classroom management. Any experienced middle school science teacher can tell you that successful classroom management…

Wolfgang, Christie Nicole

2009-01-01

474

Interpreting Texts in Classroom Contexts.  

ERIC Educational Resources Information Center

|Describes a series of instructional episodes in an 11th-grade classroom discussing J.D. Salinger's short story "The Laughing Man." Presents and discusses the "Text and Context" model for the negotiation of interpretations in classroom contexts. Offers suggestions for developing interpretive classroom communities. (SR)|

Unrau, Norman J.; Ruddell, Robert B.

1995-01-01

475

GALAXY Classroom: Television for Tomorrow.  

ERIC Educational Resources Information Center

|An interactive learning service for elementary grades, "GALAXY Classroom," offers enrichment opportunities to classrooms. Students communicate via fax in response to questions posed in satellite transmitted segments. The primary market for "GALAXY Classroom" is the at-risk student. Sidebars describe costs and current offerings. (SLW)|

Graumann, Peter

1994-01-01

476

Sound Advice on Classroom Acoustics.  

ERIC Educational Resources Information Center

Discusses the importance of acoustic standards in classroom design, presenting an interview with the Acoustical Society of America's (ASA's) standards manager which focuses on reasons for the new ASA standards, the standards document (which was written for K-12 classroom but applies to college classrooms), the need to avoid echo and be able to…

Sturgeon, Julie

2003-01-01

477

Poor Marks for Classroom Acoustics.  

ERIC Educational Resources Information Center

|Discusses the problem of low acoustical performance in many of today's K-12 classrooms and its impact on student learning. The following three primary types of classroom noise and their control are explored: reverberation; climate control system noise; and noise from outside the classroom. (GR)|

Herbert, R. Kring

1999-01-01

478

Astronomer in the Classroom  

NASA Astrophysics Data System (ADS)

Interstellar Studios and 21st Century Learning are sponsoring a new program, Astronomer in the Classroom, in support of the International Year of Astronomy 2009. The Astronomer in the Classroom Program will provide astronomers and students the opportunity to interact, in real-time, during the IYA2009. Astronomers will present their recent research and communicate directly with students from the convenience of their research facility and/or office, and students will pose questions to the Astronomer of the Day from the convenience of their school computers.

Oman, J.; Koenig, K.

2008-11-01

479

The C3 Framework: Evaluating Classroom Response System Interactions in University Classrooms  

NASA Astrophysics Data System (ADS)

The larger the classroom, the more likely is it that communications consist of a one-way flow from the instructor to students. Classroom Response Systems (CRSs) are frequently hailed as technologies capable of improving communications by opening the space for dialogic engagement; yet, a causal relationship is not documented in the literature. The data reported on here stem from a mixed methodology study and provide insights into motivations for CRS use and enacted CRS use across disciplines, as well as student and instructor perceptions of the tool's effects on teaching and learning. From these data emerged a framework of interaction (the C3 Framework) that situates CRS use from both the instructors' and learners' perspectives. The framework consists of an interdependent relationship between Concerns, Centeredness, and Control of discourse. Although this study took place in university classrooms, the C3 Framework presented here applies across educational settings.

Fies, Carmen; Marshall, Jill

2008-10-01

480

An expanded calibration study of the explicitly correlated CCSD(T)-F12b method using large basis set standard CCSD(T) atomization energies  

NASA Astrophysics Data System (ADS)

The effectiveness of the recently developed, explicitly correlated coupled cluster method CCSD(T)-F12b is examined in terms of its ability to reproduce atomization energies derived from complete basis set extrapolations of standard CCSD(T). Most of the standard method findings were obtained with aug-cc-pV7Z or aug-cc-pV8Z basis sets. For a few homonuclear diatomic molecules it was possible to push the basis set to the aug-cc-pV9Z level. F12b calculations were performed with the cc-pVnZ-F12 (n = D, T, Q) basis set sequence and were also extrapolated to the basis set limit using a Schwenke-style, parameterized formula. A systematic bias was observed in the F12b method with the (VTZ-F12/VQZ-F12) basis set combination. This bias resulted in the underestimation of reference values associated with small molecules (valence correlation energies <0.5 Eh) and an even larger overestimation of atomization energies for bigger systems. Consequently, caution should be exercised in the use of F12b for high accuracy studies. Root mean square and mean absolute deviation error metrics for this basis set combination were comparable to complete basis set values obtained with standard CCSD(T) and the aug-cc-pVDZ through aug-cc-pVQZ basis set sequence. However, the mean signed deviation was an order of magnitude larger. Problems partially due to basis set superposition error were identified with second row compounds which resulted in a weak performance for the smaller VDZ-F12/VTZ-F12 combination of basis sets.

Feller, David; Peterson, Kirk A.

2013-08-01

481

Classroom Assessment Techniques: Weekly Reports  

NSDL National Science Digital Library

This site describes the use of weekly reports as an assessment tool for student learning. It is one of a series of Classroom Assessment Techniques (CATs) provided by the Field-tested Learning Assessment Guide (FLAG) website. The CATs of FLAG were constructed as a resource for science, technology, engineering and mathematics instructors to emphasize deeper levels of learning and to give instructors valuable feedback during a course. Weekly reports provide rapid feedback about what students think they are learning and what conceptual difficulties they are experiencing. This site provides an overview of this assessment technique including information about how to use it. The site is also linked to a set of discipline-specific "tools" that can be downloaded for immediate use, as well as supplementary links and sources to further explore this assessment tool.

Etkina, Eugenia; The National Institute for Science Education; College Level One Team

482

Classroom Assessment Techniques: Scoring Rubrics  

NSDL National Science Digital Library

This page describes how to use scoring rubrics to assess student learning. It is one of a series of Classroom Assessment Techniques (CATs) provided by the Field-tested Learning Assessment Guide (FLAG) website. The CATs of FLAG were constructed as a resource for science, technology, engineering and mathematics instructors to emphasize deeper levels of learning and to give instructors valuable feedback during a course. Rubrics are a way of describing evaluation criteria based on the expected outcomes and performances of students. This site provides information about why scoring rubrics are beneficial to use and how to use them. The site is also linked to a set of discipline-specific "tools" that can be downloaded for immediate use, as well as supplementary links and sources to further explore this assessment tool.

Ebert-May, Diane; The National Institute for Science Education; College Level One Team

483

Classroom Assessment Techniques: Performance Assessment  

NSDL National Science Digital Library

This page describes the performance assessment, one of a series of Classroom Assessment Techniques (CATs) provided by the Field-tested Learning Assessment Guide (FLAG) website. The CATs of FLAG were constructed as a resource for science, technology, engineering and mathematics instructors to emphasize deeper levels of learning and to give instructors valuable feedback during a course. Performance assessments are designed to judge student abilities to use specific knowledge and research skills that require the student to manipulate equipment to solve a problem or make an analysis. Performance assessments may reveal a variety of problem-solving approaches, thus providing insight into a student's level of conceptual and procedural knowledge. This site provides an overview of this assessment technique and information about how to use it, as well as a set of discipline-specific "tools" that can be downloaded for immediate use. Supplementary links and sources are also included to further explore this assessment tool.

Slater, Timothy F.; The National Institute for Science Education; College Level One Team

484

The Engineered Adjustment Classroom.  

ERIC Educational Resources Information Center

|Described are the curriculum, behavioral modification program, summer activities, and parent involvement in the Papillion (Nebraska) Title III elementary level "engineered classroom" program for emotionally disturbed students. Noted is program initiation after parents and teachers became upset over poor academic progress and behaviors of an…

Spilker, George

485

Singing Smoothes Classroom Transitions  

ERIC Educational Resources Information Center

|Just as humming a merry tune helped Snow White and her furry animal friends to quickly clean a filthy cottage in the movie "Snow White and the Seven Dwarfs" (Disney & Cottrell, 1937), singing can be an effective way to help keep young children fully engaged during classroom transitions. The purposes of this article are to: (1) consider why…

Mathews, Sarah E.

2012-01-01

486

Implementing the Synchronous Classroom  

ERIC Educational Resources Information Center

|This commentary describes an action research project conducted by selected staff at the Northern Valley Regional High School District in New Jersey. The project focused on the idea of developing a synchronous classroom to provide world language learning opportunities to students. Relevant research is provided as are ideas regarding logistics and…

Furman, Jan A.

2010-01-01

487

The Classroom Animal: Snails.  

ERIC Educational Resources Information Center

|Points out that snails are interesting and easily-managed classroom animals. One advantage of this animal is that it requires no special attention over weekends or holidays. Background information, anatomy, reproduction, and feeding are discussed, along with suggestions for housing aquatic and/or land snails. (DH)|

Kramer, David S.

1985-01-01

488

Creating a Smart Classroom  

ERIC Educational Resources Information Center

This article provides a description of an affordable, smart classroom built for the Technology Department at Appalachian State university. The system consists of three basic components: a home theater combo, a tablet PC, and a digital projector, costing a total of $7,300, or $8,800 if a podium, screen, and projector mount are purchased. The…

Domermuth, David

2005-01-01

489

Creating a Smart Classroom  

ERIC Educational Resources Information Center

This article provides a description of an affordable, smart classroom system that was built for the Technology Department at Appalachian State University in Boone, NC. In the hope that other educators might find his department's experience useful, this author, David Domermuth (the department's coordinator of manufacturing) describes the system,…

Domermuth, David

2005-01-01

490

Classroom influences on bullying  

Microsoft Academic Search

The relationship between estimates of teachers' management of the class, the social structure of the class and bullying otherswas investigated by questionnaires answered by 2,002 pupils and 99 teachers in Norwegian primary schools. A path analysis demonstrated that the social structure of the class had a direct impact on bullying behaviour. Classroom management had a direct impact on the prevalence

Erling Roland; David Galloway

2002-01-01

491

Classroom Supply Kit  

NSDL National Science Digital Library

This convenient kit provides all the basics for classroom exploration. These are the essentials for any hands-on science instruction. Packaged in a handy case, the kit offers 7 plastic coated magnetic wands, 2 desk-size digital scales, 28 glass hand lense

2010-04-22

492

Caring as Classroom Practice  

ERIC Educational Resources Information Center

|When planning for the new school year, K-2 teachers might consider the benefits of creating a caring classroom. Caring has the potential to not only encourage thoughtful social studies practice, but to also enhance it. The best K-2 teachers also recognize the importance of caring in the development of responsible citizens. Such teachers plan and…

Johnson, Chrystal S.; Thomas, Adrian T.

2009-01-01

493

View from the Classroom  

ERIC Educational Resources Information Center

|Differentiation holds great potential for improving student achievement. To clarify what true differentiation looks like in the classroom and how best to prepare teachers to differentiate, "JSD" discussed the practice with leaders at two schools noted for their exemplary use of differentiated education.|

Pardini, Priscilla

2005-01-01

494

Windows into Art Classrooms.  

ERIC Educational Resources Information Center

|An editorial by Kit Grauer introduces this collection of articles which establish that there is no such thing as a simple definition of art education even within one culture, and that people's views can be reflected by art educators across the world. The first article, "A Window on Three Singapore Art Classrooms" (Jane Chia; John Matthews; Paul…

Grauer, Kit, Ed.

1995-01-01

495

Classroom of the Sea  

NSDL National Science Digital Library

Although most students do not have the opportunity to conduct in situ research projects until college, the Classroom of the Sea program at the American School for the Deaf (ASD) provides an unusual opportunity for students to work directly with scientists

Monte, Denise; Hupper, Mary L.; Scheifele, Peter

2000-03-01

496

The Outdoor Classroom.  

ERIC Educational Resources Information Center

|An Outdoor Classroom to prepare pre-service and in-service teachers to utilize vital natural resources as an outdoor laboratory was established in 1974 by Elizabeth City State University. Because of its proximity to the Great Dismal Swamp and the Atlantic, the university's geographical location made it especially suitable for such a course of…

Thomas, Dorothy E.

497

Growing a Nurturing Classroom  

ERIC Educational Resources Information Center

|"Growing a nurturing classroom" is an awareness training programme presented by educational psychologists in Leicestershire for professionals working in primary schools with the aim of promoting an optimal environment for learning and emotional well-being. The training helps primary school staff to take a holistic approach to education; see…

Boorn, Clare; Dunn, Paula Hopkins; Page, Claire

2010-01-01

498

Composition: Classroom Strategies.  

ERIC Educational Resources Information Center

|The articles in this journal issue present a variety of teaching methods to enhance writing instruction. The titles of the articles and their authors are as follows: (1) "Writing for Real World Audiences in the Classroom?" (James P. Beck); (2) "Copycatting: Learning to Write by Imitating" (Mary Ann Stemper); (3) "The Journal" (Ellen Byers); (4)…

Karolides, Nicholas J., Ed.

1982-01-01

499

Injuries in Preschool Classrooms  

ERIC Educational Resources Information Center

|Purpose: The primary purpose of this paper is to examine the kinds of injuries that preschool teachers working in Indiana, USA, believed to be the most common in their preschool (3-6 year olds) classrooms, the causes of such injuries, and the most important precautions they take to prevent them. Also examined are the measures the teachers take…

Obeng, Cecilia

2009-01-01

500

Injuries in preschool classrooms  

Microsoft Academic Search

Purpose – The primary purpose of this paper is to examine the kinds of injuries that preschool teachers working in Indiana, USA, believed to be the most common in their preschool (3-6 year olds) classrooms, the causes of such injuries, and the most important precautions they take to prevent them. Also examined are the measures the teachers take when an

Cecilia Obeng

2009-01-01