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1

Individualizing in Traditional Classroom Settings.  

ERIC Educational Resources Information Center

Effective individualized instruction depends primarily on the teacher possessing the skills to implement it. Individualization is therefore quite compatible with the traditional self-contained elementary classroom model, but not with its alternative, departmentalization, which allows teachers neither the time flexibility nor the familiarity with…

Thornell, John G.

1980-01-01

2

Improvement in generic problem-solving abilities of students by use of tutor-less problem-based learning in a large classroom setting.  

PubMed

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 techniques over classical teaching styles. Previously, we demonstrated that introduction of tutor-less PBL in a large third-year biochemistry undergraduate class increased student satisfaction and attendance. The current study assessed the generic problem-solving abilities of students from the same class at the beginning and end of the term, and compared student scores with similar data obtained in three classes not using PBL. Two generic problem-solving tests of equal difficulty were administered such that students took different tests at the beginning and the end of the term. Blinded marking showed a statistically significant 13% increase in the test scores of the biochemistry students exposed to PBL, while no trend toward significant change in scores was observed in any of the control groups not using PBL. Our study is among the first to demonstrate that use of tutor-less PBL in a large classroom leads to statistically significant improvement in generic problem-solving skills of students. PMID:23463230

Klegeris, Andis; Bahniwal, Manpreet; Hurren, Heather

2013-01-01

3

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

4

Analyzing Multimodal Interaction within a Classroom Setting  

ERIC Educational Resources Information Center

Human interactions are multimodal in nature. From simple to complex forms of transferal of information, human beings draw on a multiplicity of communicative modes, such as intonation and gaze, to make sense of everyday experiences. Likewise, the learning process, either within traditional classrooms or Virtual Learning Environments, is shaped by…

Moura, Heloisa

2006-01-01

5

Formal and Informal Classroom Settings: Effects on Hyperactivity  

ERIC Educational Resources Information Center

The behavior of eight hyperactive children was compared to 16 controls (9-10 years old) in two different classroom settings: an informal setting which involved choice and variety of tasks; and a formal setting which involved teacher specification of a small number of tasks. (Author/CL)

Jacob, Rolf G.; And Others

1978-01-01

6

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

7

Student Engagement and Success in the Large Astronomy 101 Classroom  

NASA Astrophysics Data System (ADS)

The large auditorium classroom presents unique challenges to maintaining student engagement. During the fall 2012 semester, I adopted several specific strategies for increasing student engagement and reducing anonymity with the goal of maximizing student success in the large class. I measured attendance and student success in two classes, one with 300 students and one with 42, but otherwise taught as similarly as possible. While the students in the large class probably did better than they would have in a traditional lecture setting, attendance was still significantly lower in the large class, resulting in lower student success than in the small control class by all measures. I will discuss these results and compare to classes in previous semesters, including other small classes and large Distance Education classes conducted live over remote television link.

Jensen, J. B.

2014-07-01

8

Issues in the Analysis of Data from Natural Classroom Settings.  

ERIC Educational Resources Information Center

Three problems which arise in the analysis of data from natural classroom settings are examined. The effects of the use of different statistical procedures are illustrated with data derived from the 1969 Home Environment and School Study in Canberra. (Author/MLW)

Keeves, John P.; Lewis, Ramon

1983-01-01

9

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

10

Improving Classroom Instruction in Training Settings: A Three Phase Program.  

ERIC Educational Resources Information Center

Discusses the rationale and describes the components of a three-phase approach in which an instructional improvement consultant and training instructor work as partners in the process of building and refining the teaching skills of classroom instructors in training settings. (MBR)

Carrier, Carol; Dalgaard, Kathleen

1985-01-01

11

Silent Students' Participation in a Large Active Learning Science Classroom  

ERIC Educational Resources Information Center

Active learning in large science classrooms furthers opportunities for students to engage in the content and in meaningful learning, yet students can still remain anonymously silent. This study aims to understand the impact of active learning on these silent students in a large General Chemistry course taught via Socratic questioning and…

Obenland, Carrie A.; Munson, Ashlyn H.; Hutchinson, John S.

2012-01-01

12

Using a "Classroom Response System" to Improve Active Student Participation in a Large Sexual Health Class  

ERIC Educational Resources Information Center

Larger class sizes are often the solution to the greater enrollments and fewer resources that many colleges and universities face today. These large classes present special challenges to courses that were typically and most effectively taught in small, interactive and open settings. A "Classroom Response System" (CRS), an instructional tool that…

Vail-Smith, Karen; Blumell, Charla; Elmore, Barry

2006-01-01

13

Lessons Learned from a Multiculturally, Economically Diverse Classroom Setting.  

ERIC Educational Resources Information Center

For her sabbatical a professor of teacher education at Emporia State University returned to the elementary classroom after a 20-year absence to teach in a third/fourth combination classroom in the Emporia, Kansas Public Schools. The return to elementary classroom teaching provided the professor with the opportunity to utilize some of the social…

Lyman, Lawrence

14

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

15

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

PubMed Central

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

2007-01-01

16

Improving Classroom Acoustics: Utilizing Hearing-Assistive Technology and Communication Strategies in the Educational Setting.  

ERIC Educational Resources Information Center

This article examines acoustical, technological, and rehabilitative solutions for improving classroom acoustics and speech perception in classroom settings. These procedures include: physical acoustical modifications of the room, personal hearing aids, hearing-assistive technologies, modifications in speaker-listener distance, optimizing visual…

Crandell, Carl C.; Smaldino, Joseph J.

1999-01-01

17

Classroom Management Strategies for Young Children with Challenging Behavior Within Early Childhood Settings  

Microsoft Academic Search

Many preschool, Head Start, and kindergarten educators of young children express concern about the number of children who exhibit frequent challenging behaviors and report that managing these behaviors is difficult within these classrooms. This article describes research-based strategies with practical applications that can be used as part of classroom management practices in settings with young children to improve children's social

Kristine Jolivette; Elizabeth A. Steed

2010-01-01

18

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

19

An Approach to Functional Assessment in General Education Classroom Settings.  

ERIC Educational Resources Information Center

In the present case illustration, teacher interviews, conditional probability analyses of direct observations, and brief teacher-implemented functional analyses are demonstrated to help practitioners learn an efficient and effective method for determining the function of problem behaviors exhibited in general education classrooms. Future…

Doggett, R. Anthony; Edwards, Ron P.; Moore, James W.; Tingstrom, Daniel H.; Wilczynski, Susan M.

2001-01-01

20

Setting of Classroom Environments for Hearing Impaired Children  

ERIC Educational Resources Information Center

This paper aims to explain effects of acoustical environments in sound perception of hearing impaired people. Important aspects of sound and hearing impairment are explained. Detrimental factors in acoustic conditions for speech perception are mentioned. Necessary acoustic treatment in classrooms and use of FM systems to eliminate these factors…

Turan, Zerrin

2007-01-01

21

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

22

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

ERIC Educational Resources Information Center

This article describes the impetus and rationale for the development of the Sign Language Skills Classroom Observation (SLSCO) assessment. The procedure for developing the SLSCO is discussed and the results of use of the SLSCO with National Technical Institute for the Deaf faculty (n=14) during a trial year are summarized. (Contains references.)…

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

2000-01-01

23

Content-Based Instruction for English Language Learners: An Exploration across Multiple Classroom Settings  

ERIC Educational Resources Information Center

This study explored the content-based literacy instruction of English language learners (ELLs) across multiple classroom settings in U.S. elementary schools. The following research questions guided the study: (a) How are ELLs taught English in two types of instructional settings: regular content-area literacy instruction in the all-English…

Park, Seo Jung

2009-01-01

24

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

PubMed Central

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 children spent a majority of their day engaged in child-directed free-choice activity settings combined with relatively low amounts of teacher-directed activity, and a Structured-Balanced pattern in which children spent relatively equal proportions of their day engaged in child-directed free-choice activity settings and teacher-directed small- and whole-group activities. Daily routine profiles were associated with program type and curriculum use but not with measures of process quality. Children in Structured-Balanced classrooms had more opportunities to engage in language and literacy and math activities, whereas children in High Free-Choice classrooms had more opportunities for gross motor and fantasy play. Being in a Structured-Balanced classroom was associated with children’s language scores but profiles were not associated with measures of children’s math reasoning or socio-emotional behavior. Consideration of teachers’ structuring of daily routines represents a valuable way to understand nuances in the provision of learning experiences for young children in the context of current views about developmentally appropriate practice and school readiness. PMID:22665945

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

2011-01-01

25

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

26

Concept Formation From Very Large Training Sets  

Microsoft Academic Search

Abstract This,paper ,proposes ,an alternative ,to Quinlan's,algorithm ,for ,forming ,classification trees,from ,large ,sets,of examples. ,My algorithm is guaranteed,to terminate. ,Quinlan's ,algorithm isusually,faster. I.The,Nature,of the ,Problem.

Richard A. O'keefe

1983-01-01

27

Turkish Special Education Teachers' Implementation of Functional Analysis in Classroom Settings  

ERIC Educational Resources Information Center

Three Turkish special education teachers conducted a functional analysis to identify variables that might initiate or maintain the problem behaviors of three children with developmental disabilities. The analysis procedures were conducted in natural classroom settings. In Phase 1, following initial training in functional analysis procedures, the…

Erbas, Dilek; Yucesoy, Serife; Turan, Yasemin; Ostrosky, Michaelene M.

2006-01-01

28

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

29

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

30

Analysis of Two Early Childhood Education Settings: Classroom Variables and Peer Verbal Interaction  

ERIC Educational Resources Information Center

Descriptive and ecobehavioral analyses were used to explore the daily activity contexts in classroom settings reflecting two distinct models of early childhood education. Activity context, social configurations, teacher behavior, and child behavior were explored, with specific consideration given to peer verbal behavior as an indicator of social…

Hojnoski, Robin L.; Margulies, Allison S.; Barry, Amberly; Bose-Deakins, Jillaynne; Sumara, Kimberly M.; Harman, Jennifer L.

2008-01-01

31

Generalizability and Decision Studies to Inform Observational and Experimental Research in Classroom Settings  

ERIC Educational Resources Information Center

Attaining reliable estimates of observational measures can be challenging in school and classroom settings, as behavior can be influenced by multiple contextual factors. Generalizability (G) studies can enable researchers to estimate the reliability of observational data, and decision (D) studies can inform how many observation sessions are…

Bottema-Beutel, Kristen; Lloyd, Blair; Carter, Erik W.; Asmus, Jennifer M.

2014-01-01

32

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 loose…

Randall, Daniel W.; And Others

33

Performance in an Online Introductory Course in a Hybrid Classroom Setting  

ERIC Educational Resources Information Center

This study compared the academic achievement between undergraduate students taking an introductory managerial accounting course online (N = 104) and students who took the same course in a hybrid classroom setting (N = 203). Student achievement was measured using scores from twelve weekly online assignments, two major online assignments, a final…

Aly, Ibrahim

2013-01-01

34

Strategies for Engaging FCS Learners in a Large-Format Classroom: Embedded Videos  

ERIC Educational Resources Information Center

This article presents a method for utilizing technology to increase student engagement in large classroom formats. In their lives outside the classroom, students spend considerable time interfacing with media, and they are receptive to information conveyed in electronic formats. Research has shown that multimedia is an effective learning resource;…

Leslie, Catherine Amoroso

2014-01-01

35

Teaching Methodology in a "Large Power Distance" Classroom: A South Korean Context  

ERIC Educational Resources Information Center

This paper looks at South Korea as an example of a collectivist society having a rather large power distance dimension value. In a traditional Korean classroom the teacher is at the top of the classroom hierarchy, while the students are the passive participants. Gender and age play a role in the hierarchy between students themselves. Teaching…

Jambor, Paul Z.

2005-01-01

36

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. PMID:21358831

Kaufman, Tamara

2010-01-01

37

Obtaining Maximal Concatenated Phylogenetic Data Sets from Large Sequence Databases  

E-print Network

Obtaining Maximal Concatenated Phylogenetic Data Sets from Large Sequence Databases Michael J of tree reconstruction, phylogeneticists are extracting increasingly large multigene data sets from permits all such data sets to be obtained in reasonable computing times even for large numbers

Sanderson, Mike

38

[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

39

Generalizability and decision studies to inform observational and experimental research in classroom settings.  

PubMed

Attaining reliable estimates of observational measures can be challenging in school and classroom settings, as behavior can be influenced by multiple contextual factors. Generalizability (G) studies can enable researchers to estimate the reliability of observational data, and decision (D) studies can inform how many observation sessions are necessary to achieve a criterion level of reliability. We conducted G and D studies using observational data from a randomized control trial focusing on social and academic participation of students with severe disabilities in inclusive secondary classrooms. Results highlight the importance of anchoring observational decisions to reliability estimates from existing or pilot data sets. We outline steps for conducting G and D studies and address options when reliability estimates are lower than desired. PMID:25354126

Bottema-Beutel, Kristen; Lloyd, Blair; Carter, Erik W; Asmus, Jennifer M

2014-11-01

40

Classrooms.  

ERIC Educational Resources Information Center

Presents K-12 and college classrooms considered outstanding in a competition, which judged the most outstanding learning environments at educational institutions nationwide. Jurors spent two days reviewing projects, focusing on concepts and ideas that made them exceptional. For each citation, the article offers information on the firm, client,…

American School & University, 2003

2003-01-01

41

Clustering Very Large Data Sets with Principal Direction Divisive Partitioning  

E-print Network

Clustering Very Large Data Sets with Principal Direction Divisive Partitioning David Littau1 of very large data sets. We define a very large data set as a data set which will not fit into memory at once. Many clustering algorithms require that the data set be scanned many times during the clustering

Boley, Daniel

42

Ready, Set, SCIENCE!: Putting Research to Work in K-8 Science Classrooms  

NSDL National Science Digital Library

What types of instructional experiences help K-8 students learn science with understanding? What do science educators teachers, teacher leaders, science specialists, professional development staff, curriculum designers, school administrators need to know to create and support such experiences? Ready, Set, Science! guides the way with an account of the groundbreaking and comprehensive synthesis of research into teaching and learning science in kindergarten through eighth grade. Based on the recently released National Research Council report Taking Science to School: Learning and Teaching Science in Grades K-8, this book summarizes a rich body of findings from the learning sciences and builds detailed cases of science educators at work to make the implications of research clear, accessible, and stimulating for a broad range of science educators. Ready, Set, Science! is filled with classroom case studies that bring to life the research findings and help readers to replicate success. Most of these stories are based on real classroom experiences that illustrate the complexities that teachers grapple with every day. They show how teachers work to select and design rigorous and engaging instructional tasks, manage classrooms, orchestrate productive discussions with culturally and linguistically diverse groups of students, and help students make their thinking visible using a variety of representational tools. This book is the winner of the Association of Educational Publishers 2008 Distinguished Achievement Award and is an essential resource for science education practitioners and contains information that will be extremely useful to everyone including parents directly or indirectly involved in the teaching of science.

Sarah Michaels

2007-01-01

43

Maximal Vector Computation in Large Data Sets  

Microsoft Academic Search

Finding the maximals in a collection of vectors is relevant to many applications. The maximal set is related to the convex hull---and hence, linear optimization---and nearest neighbors. The maximal vector problem has resurfaced with the advent of skyline queries for relational databases and skyline algorithms that are external and relationally well behaved.The initial algorithms proposed for maximals are based on

Parke Godfrey; Ryan Shipley; Jarek Gryz

2005-01-01

44

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

Microsoft Academic Search

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

Jane E. Caldwell

2007-01-01

45

LARGE POROSITY AND DIMENSION OF SETS IN METRIC TAPIO RAJALA  

E-print Network

LARGE POROSITY AND DIMENSION OF SETS IN METRIC SPACES TAPIO RAJALA Abstract. A. Salli proved in [14] an asymptotically sharp dimension estimate for sets in R n with large porosity. We generalize this result upper bounds that depend on the porosity. These cannot be found for upper­porous sets. This can be seen

Jyväskylä, University of

46

LARGE POROSITY AND DIMENSION OF SETS IN METRIC TAPIO RAJALA  

E-print Network

LARGE POROSITY AND DIMENSION OF SETS IN METRIC SPACES TAPIO RAJALA Abstract. A. Salli proved in [14] an asymptotically sharp dimension estimate for sets in Rn with large porosity. We generalize this result upper bounds that depend on the porosity. These cannot be found for upper-porous sets. This can be seen

Jyväskylä, University of

47

Interaction and Uptake in Large Foreign Language Classrooms  

ERIC Educational Resources Information Center

Inteaction determines and affects the conditions of language acquisition especially in contexts where exposure to the target language is limited. This is believed to be successful only within the context of small classes (Chavez, 2009). This paper examines learners' progress resulting from interaction in large classes. Using pre-, post-, and…

Ekembe, Eric Enongene

2014-01-01

48

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 course…

Morse, David; Jutras, France

2008-01-01

49

Teacher Beliefs about the Cognitive Diagnostic Information of Classroom- versus Large-Scale Tests: Implications for Assessment Literacy  

ERIC Educational Resources Information Center

Classroom teachers are in the front line of introducing students to formal learning, including assessments, which can be assumed to continue for students should they extend their schooling past the expected mandatory 12 years. The purpose of the present investigation was to survey secondary teachers' beliefs of classroom and large-scale tests for…

Leighton, Jacqueline P.; Gokiert, Rebecca J.; Cor, M. Ken; Heffernan, Colleen

2010-01-01

50

Teacher beliefs about the cognitive diagnostic information of classroom? versus large?scale tests: implications for assessment literacy  

Microsoft Academic Search

Classroom teachers are in the front line of introducing students to formal learning, including assessments, which can be assumed to continue for students should they extend their schooling past the expected mandatory 12 years. The purpose of the present investigation was to survey secondary teachers’ beliefs of classroom and large?scale tests for (a) providing information about students’ learning processes, (b)

Jacqueline P. Leighton; Rebecca J. Gokiert; M. Ken Cor; Colleen Heffernan

2010-01-01

51

Clusterability Detection and Initial Seed Selection in Large Data Sets  

E-print Network

using our methodology with stock market data and with the well­known BIRCH data sets, in two as wellClusterability Detection and Initial Seed Selection in Large Data Sets Scott Epter \\Lambda Mukkai assessment of the clustering tendency or clusterability of massive data sets is known. A good clusterability

Bystroff, Chris

52

Clusterability Detection and Initial Seed Selection in Large Data Sets  

E-print Network

using our methodology with stock market data and with the well-known BIRCH data sets, in two as wellClusterability Detection and Initial Seed Selection in Large Data Sets Scott Epter Mukkai assessment of the clustering tendency or clusterability of massive data sets is known. A good clusterability

Bystroff, Chris

53

An Investigation of the Effectiveness of Electronic Classroom Communication Systems in Large Lecture Classes  

NSDL National Science Digital Library

Since 2002 we have been investigating the use of an electronic classroom communication system in large first year lecture classes. Handheld keypads were distributed to teams of students during a lecture class. Students used the keypads to answer two step multiple choice problems after a discussion within their group. The questions were generated using students answers from previous exams. We have evaluated our use of the classroom communication system using a survey about how comfortable students are with this type of interaction. In addition, we have tried to determine if the use of the classroom communication system can be linked to student performance on exams. Our results show that students are comfortable with this technology and feel that, on the whole, interactive lectures are useful. At a first glance, there is an improvement in students' exam performance, but there are too many competing factors to clearly say that this improvement is solely due to the use of the classroom communication system. Even though this paper is based in physics and a physics example is used to illustrate points, the technique can be applied to other discipline areas.

54

A Case Based Analysis Preparation Strategy for Use in a Classroom Management for Inclusive Settings Course: Preliminary Observations  

ERIC Educational Resources Information Center

Case based instruction (CBI) is a pedagogical option in teacher preparation growing in application but short on practical means to implement the method. This paper presents an analysis strategy and questions developed to help teacher trainees focus on classroom management issues embedded in a set of "real" cases. An analysis of teacher candidate…

Niles, William J.; Cohen, Alan

2012-01-01

55

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

56

Classrooms: Individuals or Behavior Settings? Monographs in Teaching and Learning. General Series, Number 1.  

ERIC Educational Resources Information Center

Twenty years ago, anyone proposing to help teachers with the problem of classroom discipline had few resources at hand. It was approximately at that time that Jacob Kounin began a series of investigations that have changed our way of talking and thinking about classroom discipline. He changed our focus from a sterile concern with exercising…

Kounin, Jacob S.

57

INTERIOR VIEW, SETTING LARGE CORE WITH ASSISTANCE FROM THE OVERHEAD ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

INTERIOR VIEW, SETTING LARGE CORE WITH ASSISTANCE FROM THE OVERHEAD RAIL CRANE IN BOX FLOOR MOLD AREA (WORKERS: DAN T. WELLS AND TRUMAN CARLISLE). - Stockham Pipe & Fittings Company, Ductile Iron Foundry, 4000 Tenth Avenue North, Birmingham, Jefferson County, AL

58

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

59

Recognition for Large Sets of Handwritten Mathematical Symbols  

Microsoft Academic Search

Natural and convenient mathematical handwriting recogni- tion requires recognizers for large sets of handwritten sym- bols. This paper presents a recognition system for such handwritten mathematical symbols. We use a pre-classification strategy, in combination with elastic matching, to improve recognition speed. Elastic matching is a model-based method that involves computation proportional to the set of candi- date models. To solve

Stephen M. Watt; Xiaofang Xie

2005-01-01

60

Methods for Interactive Visualization of Large Flow Data Sets  

Microsoft Academic Search

Modern computational fluid dynamics simulations are capable of the de- tailed simulation of fluid flow. The output data sets of these simulati ons are very large and information rich. The importance of data visualization is clearly recognized for the presentation of these data sets. For gaining new insight in the nature of flow, interactive visualization methods are ess ential. The

Liere van R; Leeuw de W. C

2000-01-01

61

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

62

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, the…

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

63

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

64

Parallel Clustering Algorithm for Large-Scale Biological Data Sets  

PubMed Central

Backgrounds Recent explosion of biological data brings a great challenge for the traditional clustering algorithms. With increasing scale of data sets, much larger memory and longer runtime are required for the cluster identification problems. The affinity propagation algorithm outperforms many other classical clustering algorithms and is widely applied into the biological researches. However, the time and space complexity become a great bottleneck when handling the large-scale data sets. Moreover, the similarity matrix, whose constructing procedure takes long runtime, is required before running the affinity propagation algorithm, since the algorithm clusters data sets based on the similarities between data pairs. Methods Two types of parallel architectures are proposed in this paper to accelerate the similarity matrix constructing procedure and the affinity propagation algorithm. The memory-shared architecture is used to construct the similarity matrix, and the distributed system is taken for the affinity propagation algorithm, because of its large memory size and great computing capacity. An appropriate way of data partition and reduction is designed in our method, in order to minimize the global communication cost among processes. Result A speedup of 100 is gained with 128 cores. The runtime is reduced from serval hours to a few seconds, which indicates that parallel algorithm is capable of handling large-scale data sets effectively. The parallel affinity propagation also achieves a good performance when clustering large-scale gene data (microarray) and detecting families in large protein superfamilies. PMID:24705246

Wang, Minchao; Zhang, Wu; Ding, Wang; Dai, Dongbo; Zhang, Huiran; Xie, Hao; Chen, Luonan; Guo, Yike; Xie, Jiang

2014-01-01

65

Identifying large sets of unrelated individuals and unrelated markers  

PubMed Central

Background Genetic Analyses in large sample populations are important for a better understanding of the variation between populations, for designing conservation programs, for detecting rare mutations which may be risk factors for a variety of diseases, among other reasons. However these analyses frequently assume that the participating individuals or animals are mutually unrelated which may not be the case in large samples, leading to erroneous conclusions. In order to retain as much data as possible while minimizing the risk of false positives it is useful to identify a large subset of relatively unrelated individuals in the population. This can be done using a heuristic for finding a large set of independent of nodes in an undirected graph. We describe a fast randomized heuristic for this purpose. The same methodology can also be used for identifying a suitable set of markers for analyzing population stratification, and other instances where a rapid heuristic for maximal independent sets in large graphs is needed. Results We present FastIndep, a fast random heuristic algorithm for finding a maximal independent set of nodes in an arbitrary undirected graph along with an efficient implementation in C++. On a 64 bit Linux or MacOS platform the execution time is a few minutes, even with a graph of several thousand nodes. The algorithm can discover multiple solutions of the same cardinality. FastIndep can be used to discover unlinked markers, and unrelated individuals in populations. Conclusions The methods presented here provide a quick and efficient method for identifying sets of unrelated individuals in large populations and unlinked markers in marker panels. The C++ source code and instructions along with utilities for generating the input files in the appropriate format are available at http://taurus.ansci.iastate.edu/wiki/people/jabr/Joseph_Abraham.html PMID:24635884

2014-01-01

66

Finding interesting rules from large sets of discovered association rules  

Microsoft Academic Search

Association rules, introduced by Agrawal, Imielinski, and Swami, are rules of the form “for 90% of the rows of the relation, if the row has value 1 in the columns in set W, then it has 1 also in column B”. Efficient methods exist for discovering association rules from large collections of data. The number of discovered rules can, however,

Mika Klemettinen; Heikki Mannila; Pirjo Ronkainen; Hannu Toivonen; A. Inkeri Verkamo

1994-01-01

67

Managing Large Qualitative Data Sets in Family Research  

Microsoft Academic Search

The authors describe two complementary data management techniques-family case summaries and computer generated matrices-and their contribution to the analytic goals of a study offamily response to childhood chronic illness. Family case summaries enabled the investigators to reduce a large qualitative data set in a way that preserved thefamilyfocus of the research. The use of a database management software system contributed

Kathleen A. Knafl; Lioness Ayres

1996-01-01

68

On the Scalable Computation of Large Sets of Integrals  

Microsoft Academic Search

We consider efficient strategies for the parallel and dis- tributed computation of large sets of multivariate integrals. These arise in many applications such as computational chemistry, high energy physics and finite element prob- lems. We use a hierarchical architecture which is highly scalable and allows parallelization not only at the domain level but also at the integral level. We present

Elise De Doncker; Ajay Gupta; Laurentiu Cucos

2003-01-01

69

Multimodal Literacy Practices in the Indigenous Sámi Classroom: Children Navigating in a Complex Multilingual Setting  

ERIC Educational Resources Information Center

This article explores multimodal literacy practices in a transforming multilingual context of an indigenous and endangered Sámi language classroom. Looking at literacy practices as embedded in a complex and shifting terrain of language ideologies, language norms, and individual experiences and attitudes, we examined how multilingual Sámi children…

Pietikäinen, Sari; Pitkänen-Huhta, Anne

2013-01-01

70

An Interaction Analysis of Teacher-Inspired Classroom Language Behaviour in Alternative Language Media Settings.  

ERIC Educational Resources Information Center

Evaluated impact of using English, the "Mother Tongue" (Yoruba), or a structural bilingual mix of English and Yoruba in classroom communication. Found little difference in frequency of teaching behavior patterns, although in some instances teachers speaking Yoruba were more active. (CJM)

Awoniyi, Timothy A.; Ala, Florence B.O.

1984-01-01

71

A Social StoriesTm Intervention Package for Students with Autism in Inclusive Classroom Settings  

PubMed Central

A Social StoriesTM intervention package was used to teach 2 students with autism to read Social Stories, answer comprehension questions, and engage in role plays. Appropriate social behaviors increased and inappropriate behaviors decreased for both participants, and the effects were maintained for up to 10 months. This intervention package appears to be useful in inclusive classroom environments and does not require intensive supervision of the child's behavior. PMID:18816978

Chan, Jeffrey M; O'Reilly, Mark F

2008-01-01

72

Visualizing Large Data Sets in the Earth Sciences  

Microsoft Academic Search

The authors describe the capabilities of McIDAS , an interactive visualization system that is vastly increasing the ability of earth scientists to manage and analyze data from remote sensing instruments and numerical simulation models. McIDAS provides animated three-dimensional images and highly interactive displays. The software can manage, analyze, and visualize large data sets that span many physical variables (such as

William L. Hibbard; David A. Santek

1989-01-01

73

Using Mobile Phones to Increase Classroom Interaction  

ERIC Educational Resources Information Center

This study examines the possible benefits of using mobile phones to increase interaction and promote active learning in large classroom settings. First year undergraduate students studying Cellular Processes at the University of East London took part in a trial of a new text-based classroom interaction system and evaluated their experience by…

Cobb, Stephanie; Heaney, Rose; Corcoran, Olivia; Henderson-Begg, Stephanie

2010-01-01

74

Mobile-Phone-Based Classroom Response Systems: Students' Perceptions of Engagement and Learning in a Large Undergraduate Course  

ERIC Educational Resources Information Center

Using a Classroom Response System (CRS) has been associated with positive educational outcomes, by fostering student engagement and by allowing immediate feedback to both students and instructors. This study examined a low-cost CRS (VotApedia) in a large first-year class, where students responded to questions using their mobile phones. This study…

Dunn, Peter K.; Richardson, Alice; Oprescu, Florin; McDonald, Christine

2013-01-01

75

Silent and Vocal Students in a Large Active Learning Chemistry Classroom: Comparison of Performance and Motivational Factors  

ERIC Educational Resources Information Center

Active learning is becoming more prevalent in large science classrooms, and this study shows the impact on performance of being vocal during Socratic questioning in a General Chemistry course. 800 college students over a two year period were given a pre and post-test using the Chemistry Concept Reasoning Test. The pre-test results showed that…

Obenland, Carrie A.; Munson, Ashlyn H.; Hutchinson, John S.

2013-01-01

76

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

77

Effective Extensive Reading outside the Classroom: A Large-Scale Experiment  

ERIC Educational Resources Information Center

We report on a large-scale implementation of extensive reading (ER) in a university setting in Japan where all students were required to read outside class time as part of their course requirement. A pre/posttest comparison between the 2009 cohort of students who read outside of class and the 2008 cohort who did no outside reading shows that the…

Robb, Thomas; Kano, Makimi

2013-01-01

78

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.

79

An Academic Approach to Stress Management for College Students in a Conventional Classroom Setting.  

ERIC Educational Resources Information Center

Since the identification of stress and the relationship of individual stress responses to physical and mental health, medical and behavioral professionals have been training individuals in coping strategies. To investigate the possibility of teaching cognitive coping skills to a nonclinical population in an academic setting, 41 college students…

Carnahan, Robert E.; And Others

80

The UCI KDD Archive of Large Data Sets for Data Mining Research and Experimentation  

E-print Network

The UCI KDD Archive of Large Data Sets for Data Mining Research and Experimentation Stephen D. Bay.ics.uci.eduwhich is a new online archive of large and complex data sets that encompasses a wide variety of data types on relatively small data sets. While it is clear that in the long run large data sets will eventually become

Pazzani, Michael J.

81

Impact of Abbreviated Lecture with Interactive Mini-cases vs Traditional Lecture on Student Performance in the Large Classroom.  

PubMed

Objective. To compare the impact of 2 different teaching and learning methods on student mastery of learning objectives in a pharmacotherapy module in the large classroom setting. Design. Two teaching and learning methods were implemented and compared in a required pharmacotherapy module for 2 years. The first year, multiple interactive mini-cases with inclass individual assessment and an abbreviated lecture were used to teach osteoarthritis; a traditional lecture with 1 inclass case discussion was used to teach gout. In the second year, the same topics were used but the methods were flipped. Student performance on pre/post individual readiness assessment tests (iRATs), case questions, and subsequent examinations were compared each year by the teaching and learning method and then between years by topic for each method. Students also voluntarily completed a 20-item evaluation of the teaching and learning methods. Assessment. Postpresentation iRATs were significantly higher than prepresentation iRATs for each topic each year with the interactive mini-cases; there was no significant difference in iRATs before and after traditional lecture. For osteoarthritis, postpresentation iRATs after interactive mini-cases in year 1 were significantly higher than postpresentation iRATs after traditional lecture in year 2; the difference in iRATs for gout per learning method was not significant. The difference between examination performance for osteoarthritis and gout was not significant when the teaching and learning methods were compared. On the student evaluations, 2 items were significant both years when answers were compared by teaching and learning method. Each year, students ranked their class participation higher with interactive cases than with traditional lecture, but both years they reported enjoying the traditional lecture format more. Conclusion. Multiple interactive mini-cases with an abbreviated lecture improved immediate mastery of learning objectives compared to a traditional lecture format, regardless of therapeutic topic, but did not improve student performance on subsequent examinations. PMID:25657376

Marshall, Leisa L; Nykamp, Diane L; Momary, Kathryn M

2014-12-15

82

Impact of Abbreviated Lecture with Interactive Mini-cases vs Traditional Lecture on Student Performance in the Large Classroom  

PubMed Central

Objective. To compare the impact of 2 different teaching and learning methods on student mastery of learning objectives in a pharmacotherapy module in the large classroom setting. Design. Two teaching and learning methods were implemented and compared in a required pharmacotherapy module for 2 years. The first year, multiple interactive mini-cases with inclass individual assessment and an abbreviated lecture were used to teach osteoarthritis; a traditional lecture with 1 inclass case discussion was used to teach gout. In the second year, the same topics were used but the methods were flipped. Student performance on pre/post individual readiness assessment tests (iRATs), case questions, and subsequent examinations were compared each year by the teaching and learning method and then between years by topic for each method. Students also voluntarily completed a 20-item evaluation of the teaching and learning methods. Assessment. Postpresentation iRATs were significantly higher than prepresentation iRATs for each topic each year with the interactive mini-cases; there was no significant difference in iRATs before and after traditional lecture. For osteoarthritis, postpresentation iRATs after interactive mini-cases in year 1 were significantly higher than postpresentation iRATs after traditional lecture in year 2; the difference in iRATs for gout per learning method was not significant. The difference between examination performance for osteoarthritis and gout was not significant when the teaching and learning methods were compared. On the student evaluations, 2 items were significant both years when answers were compared by teaching and learning method. Each year, students ranked their class participation higher with interactive cases than with traditional lecture, but both years they reported enjoying the traditional lecture format more. Conclusion. Multiple interactive mini-cases with an abbreviated lecture improved immediate mastery of learning objectives compared to a traditional lecture format, regardless of therapeutic topic, but did not improve student performance on subsequent examinations.

Nykamp, Diane L.; Momary, Kathryn M.

2014-01-01

83

An Exploration Tool for Very Large Spectrum Data Sets  

NASA Astrophysics Data System (ADS)

We present an exploration tool for very large spectrum data sets such as the SDSS, LAMOST, and 4MOST data sets. The tool works in two stages: the first uses batch processing and the second runs interactively. The latter employs the NASA hyperwall, a configuration of 128 workstation displays (8x16 array) controlled by a parallelized software suite running on NASA's Pleiades supercomputer. The stellar subset of the Sloan Digital Sky Survey DR10 was chosen to show how the tool may be used. In stage one, SDSS files for 569,738 stars are processed through our data pipeline. The pipeline fits each spectrum using an iterative continuum algorithm, distinguishing emission from absorption and handling molecular absorption bands correctly. It then measures 1659 discrete atomic and molecular spectral features that were carefully preselected based on their likelihood of being visible at some spectral type. The depths relative to the local continuum at each feature wavelength are determined for each spectrum: these depths, the local S/N level, and DR10-supplied variables such as magnitudes, colors, positions, and radial velocities are the basic measured quantities used on the hyperwall. In stage two, each hyperwall panel is used to display a 2-D scatter plot showing the depth of feature A vs the depth of feature B for all of the stars. A and B change from panel to panel. The relationships between the various (A,B) strengths and any distinctive clustering are immediately apparent when examining and inter-comparing the different panels on the hyperwall. The interactive software allows the user to select the stars in any interesting region of any 2-D plot on the hyperwall, immediately rendering the same stars on all the other 2-D plots in a unique color. The process may be repeated multiple times, each selection displaying a distinctive color on all the plots. At any time, the spectra of the selected stars may be examined in detail on a connected workstation display. We illustrate how our approach allows us to quickly isolate and examine such interesting stellar subsets as EMP stars, CV stars and C-rich stars.

Carbon, Duane F.; Henze, Christopher

2015-01-01

84

Classroom Discourse and Reading Comprehension in Bilingual Settings: A Case Study of Collaborative Reasoning in a Chinese Heritage Language Learners' Classroom  

ERIC Educational Resources Information Center

This dissertation examines the participation of one Chinese teacher and five 13 to 15 year-old Chinese heritage students in a classroom in a Chinese community school during group discussions about narrative texts. In this study, the teacher used Collaborative Reasoning (CR) (Anderson, et al., 2001) to help the Chinese heritage students extend…

Tsai, Hsiao-Feng

2012-01-01

85

Large stationary sets Qi Feng Thomas Jech Jindrich Zapletal  

E-print Network

be a name for a closed unbounded subset of 1. Find a countable elementary submodel M of a large structure filter, and in V [G] find a countable elementary submodel M of some large structure containing all there is a countable elementary submodel M of a large enough structure containing C such that M = a. We will show

Zapletal, Jindrich

86

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

NSDL National Science Digital Library

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.

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

87

Introduction to statistical methods for analyzing large data sets: gene-set enrichment analysis.  

PubMed

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. PMID:21917718

Clark, Neil R; Ma'ayan, Avi

2011-09-13

88

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

89

An investigation into students' performance of invasive and non-invasive procedures on each other in classroom settings.  

PubMed

A belief that pre-registration nursing programmes in the United Kingdom were not adequately equipping students with fundamental clinical skills has led to increasing interest in alternative methods for developing students' practical skills, as an adjunct to their placement experiences. Whilst recent literature offers insight into the operational aspects of developing and running clinical skills facilities in higher education institutions, there is limited evidence regarding the types of procedures taught, or the risks and benefits to students practising these procedures on each other. This study therefore sought to identify the current status of peer-practised learning within pre-registration nurse education. A survey approach was adopted and questionnaires were sent to all Higher Education Institutes delivering pre registration nursing and midwifery programmes in the United Kingdom (n=72). Ethical approval was acquired and principles of strict confidentiality were adhered to throughout. Both quantitative and qualitative data were obtained. Quantitative data were analysed using SPSS (version 11.5), and qualitative data were systematically scrutinised for emerging themes. The findings support the notion that peer-practised learning in the classroom setting is a desirable method of teaching and learning core clinical skills from a teacher perspective. However, notable inconsistencies in the range of procedures students are allowed to perform on each other were found. The mechanisms of risk assessment and concept of consent were also found to be decidedly variable. PMID:18499523

Hilton, Penny; Barrett, David

2009-01-01

90

Experiments and other methods for developing expertise with design of experiments in a classroom setting  

NASA Technical Reports Server (NTRS)

The only way to gain genuine expertise in Statistical Process Control (SPC) and the design of experiments (DOX) is with repeated practice, but not on canned problems with dead data sets. Rather, one must negotiate a wide variety of problems each with its own peculiarities and its own constantly changing data. The problems should not be of the type for which there is a single, well-defined answer that can be looked up in a fraternity file or in some text. The problems should match as closely as possible the open-ended types for which there is always an abundance of uncertainty. These are the only kinds that arise in real research, whether that be basic research in academe or engineering research in industry. To gain this kind of experience, either as a professional consultant or as an industrial employee, takes years. Vast amounts of money, not to mention careers, must be put at risk. The purpose here is to outline some realistic simulation-type lab exercises that are so simple and inexpensive to run that the students can repeat them as often as desired at virtually no cost. Simulations also allow the instructor to design problems whose outcomes are as noisy as desired but still predictable within limits. Also the instructor and the students can learn a great deal more from the postmortum conducted after the exercise is completed. One never knows for sure what the true data should have been when dealing only with real life experiments. To add a bit more realism to the exercises, it is sometimes desirable to make the students pay for each experimental result from a make-believe budget allocation for the problem.

Patterson, John W.

1990-01-01

91

Combinatorics and Large Cardinals Combinatorial Set Theory = Innitary Combinatorics  

E-print Network

.g. -Sacks, -Miller) #12;Large Cardinal Arithmetic Cohen: 2 0 = 2 Easton: 2 = F() for any Easton function F Arithmetic Large Cardinal Easton (with Radek Honzík) Global Woodin: For a uniform Easton function F, can at The Easton result is: (Cummings-Shelah): Can force d() = +

92

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

93

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

94

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

95

Dynamic level set regularization for large distributed parameter estimation problems  

E-print Network

, Dynamic regularization, Level set, Electrical impedance tomography, DC resistivity. MSC classifications], diffraction tomography [13], electrical impedance tomography (EIT) [6, 11, 7], and Maxwell's equations in low as fine as that of the model m using a finite volume or finite element method. For the EIT and DC

Ascher, Uri M.

96

Mining association rules between sets of items in large databases  

Microsoft Academic Search

We are given a large database of customer transactions.Each transaction consists of items purchased by a customer in a visit. We present an efficient algorithm that generates all significant association rules between items in the database.The algorithm incorporates buffer management and novel estimation and pruning techniques. We also present results of applying this algorithm to sales data obtained from a

Rakesh Agrawal; Tomasz Imieli?ski; Arun N. Swami

1993-01-01

97

Query-driven visualization of large data sets  

Microsoft Academic Search

We present a practical and general-purpose approach to large and complex visual data analysis where visualization processing, rendering and subsequent human interpretation is constrained to the subset of data deemed interesting by the user. In many scientific data analysis applications, \\

Kurt Stockinger; John Shalf; K. Wu; E. W. Bethel

2005-01-01

98

Biostratigraphical dating of Cretaceous coral communities using large data sets  

Microsoft Academic Search

Habitats of hermatypic corals are shallow and turbulent marine environments that often lack biostratigraphic index fossils.\\u000a For that reason many Cretaceous coral faunas are imprecisely dated or dated only on the basis of comparisons with other coral\\u000a faunas. Using a large database on the taxonomy, stratigraphical and geographical distribution of corals in the Cretaceous,\\u000a a method is proposed that will

Hannes Löser

2002-01-01

99

Approximate Single Linkage Cluster Analysis of Large Data Sets in High  

E-print Network

Approximate Single Linkage Cluster Analysis of Large Data Sets in High Dimensional Spaces William F 15213­3890 May 9, 1995 Abstract Motivated by a real­world data set of more than 40,000 observa­ tions, we consider single linkage clustering of large data sets in high di­ mensional spaces

100

Web-Queryable Large-Scale Data Sets for Hypothesis Generation in Plant Biology  

E-print Network

REVIEW Web-Queryable Large-Scale Data Sets for Hypothesis Generation in Plant Biology Siobhan M sequencing initiatives, have generated important and unprecedented large-scale data sets. While providing an overview of several such genomic, epigenomic, transcriptomic, proteomic, and metabolomic data sets

Toronto, University of

101

Coffee Shops, Classrooms and Conversations: public engagement and outreach in a large interdisciplinary research Hub  

NASA Astrophysics Data System (ADS)

Public engagement and outreach activities are increasingly using specialist staff for co-ordination, training and support for researchers, they are also becoming expected for large investments. Here, the experience of public engagement and outreach a large, interdisciplinary Research Hub is described. dot.rural, based at the University of Aberdeen UK, is a £11.8 million Research Councils UK Rural Digital Economy Hub, funded as part of the RCUK Digital Economy Theme (2009-2015). Digital Economy research aims to realise the transformational impact of digital technologies on aspects of the environment, community life, cultural experiences, future society, and the economy. The dot.rural Hub involves 92 researchers from 12 different disciplines, including Geography, Hydrology and Ecology. Public Engagement and Outreach is embedded in the dot.rural Digital Economy Hub via an Outreach Officer. Alongside this position, public engagement and outreach activities are compulsory part of PhD student contracts. Public Engagement and Outreach activities at the dot.rural Hub involve individuals and groups in both formal and informal settings organised by dot.rural and other organisations. Activities in the realms of Education, Public Engagement, Traditional and Social Media are determined by a set of Underlying Principles designed for the Hub by the Outreach Officer. The underlying Engagement and Outreach principles match funding agency requirements and expectations alongside researcher demands and the user-led nature of Digital Economy Research. All activities include researchers alongside the Outreach Officer are research informed and embedded into specific projects that form the Hub. Successful public engagement activities have included participation in Café Scientifique series, workshops in primary and secondary schools, and online activities such as I'm a Scientist Get Me Out of Here. From how to engage 8 year olds with making hydrographs more understandable to members of the public to blogging birds and engaging with remote, rural communities to Spiegeltents. This presentation will share successful public engagement and outreach events alongside some less successful experiences and lessons learnt along the way.

Holden, Jennifer A.

2014-05-01

102

Processing large remote sensing image data sets on Beowulf clusters  

USGS Publications Warehouse

High-performance computing is often concerned with the speed at which floating- point calculations can be performed. The architectures of many parallel computers and/or their network topologies are based on these investigations. Often, benchmarks resulting from these investigations are compiled with little regard to how a large dataset would move about in these systems. This part of the Beowulf study addresses that concern by looking at specific applications software and system-level modifications. Applications include an implementation of a smoothing filter for time-series data, a parallel implementation of the decision tree algorithm used in the Landcover Characterization project, a parallel Kriging algorithm used to fit point data collected in the field on invasive species to a regular grid, and modifications to the Beowulf project's resampling algorithm to handle larger, higher resolution datasets at a national scale. Systems-level investigations include a feasibility study on Flat Neighborhood Networks and modifications of that concept with Parallel File Systems.

Steinwand, Daniel R.; Maddox, Brian; Beckmann, Tim; Schmidt, Gail

2003-01-01

103

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

104

Identifying at risk individuals for drug and alcohol dependence: teaching the competency to students in classroom and clinical settings.  

PubMed

Alcohol use and other drug use affect patient healthcare outcomes. This article describes a classroom-to-clinical approach teaching nursing students to utilize motivational interviewing techniques to support patient behavior change. Through the lens of a universal prevention method, nursing students learned about reward circuit activation leading to risky substance use and the difference between addiction and at-risk use. Specific assessment tools and motivational interviewing techniques were presented in the classroom. Students then applied their knowledge in simulation laboratories and clinical rotations. PMID:24743176

Kane, Irene; Mitchell, Ann M; Puskar, Kathryn R; Hagle, Holly; Talcott, Kimberly; Fioravanti, Marie; Droppa, Mandy; Luongo, Peter F; Lindsay, Dawn

2014-01-01

105

Large cardinals imply that every reasonably definable set of reals is lebesgue measurable  

Microsoft Academic Search

We prove that if there is a supercompact cardinal or much smaller large cardinals, then every set of reals from L(R) is Lebesgue measurable, and similar results. We also introduce some large cardinals.

Saharon Shelah; Hugh Woodin

1990-01-01

106

An Analogous Study of Children's Attitudes Toward School in an Open Classroom Environment as Opposed to a Conventional Setting.  

ERIC Educational Resources Information Center

A study sought to determine whether intermediate age children exposed to open classroom teaching strategy have a more positive attitude toward school than intermediate age children exposed to conventional teaching strategy. The hypothesis was that there would be no significant difference in attitude between the two groups. The study was limited to…

Zeli, Doris Conti

107

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

108

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 with…

Guerra-Ramos, Maria Teresa

2011-01-01

109

What Do Children Write in Science? A Study of the Genre Set in a Primary Science Classroom  

ERIC Educational Resources Information Center

This article reports on the types of scientific writing found in two primary grade classrooms. These results are part of a larger two-year study whose purpose was to examine the development of informational writing of second- and third-grade students as they participated in integrated science-literacy instruction. The primary purpose of the…

Honig, Sheryl

2010-01-01

110

Response Grids: Practical Ways to Display Large Data Sets with High Visual Impact  

ERIC Educational Resources Information Center

Spreadsheets are useful for large data sets but they may be too wide or too long to print as conventional tables. Response grids offer solutions to the challenges posed by any large data set. They have wide application throughout science and for every subject and context where visual data displays are designed, within education and elsewhere.…

Gates, Simon

2013-01-01

111

Intelligent Simulation Tools for Mining Large Scienti c Data Sets 1 Intelligent Simulation Tools for Mining  

E-print Network

Intelligent Simulation Tools for Mining Large Scienti#12;c Data Sets 1 Intelligent Simulation Tools for Mining Large Scienti#12;c Data Sets Feng ZHAO Xerox Palo Alto Research Center 3333 Coyote Hill Road, Palo. Keywords Intelligent simulation, Scienti#12;c data mining, Qualitative reasoning, Reasoning about physical

Bailey-Kellogg, Chris

112

ANALYSIS AND VISUALIZATION OF LARGE SET OF UNORGANIZED DATA POINTS USING THE DISTANCE FUNCTION  

E-print Network

ANALYSIS AND VISUALIZATION OF LARGE SET OF UNORGANIZED DATA POINTS USING THE DISTANCE FUNCTION contour is used for quick visualization of the data set on di#11;erent scale and resolution. Distance contours are also used to characterize and quantify topological and geometrical properties of the data set

Zhao, Hongkai

113

Child and setting characteristics affecting the adult talk directed at preschoolers with autism spectrum disorder in the inclusive classroom.  

PubMed

Difficulty with social competence is a core deficit of autism spectrum disorder. Research on typically developing children and children with disabilities, in general, suggests the adult talk received in the classroom is related to their social development. The aims of this study were to examine (1) the types and amounts of adult talk children with autism spectrum disorder are exposed to in the preschool classroom and (2) the associations between child characteristics (e.g. language), activity area, and adult talk. Kontos' Teacher Talk classification was used to code videos approximately 30 min in length of 73 children with autism spectrum disorder (ages 3-5) in inclusive classrooms (n = 33) during center time. The results indicated practical/personal assistance was the most common type of adult talk coded, and behavior management talk least often coded. Child characteristics (i.e. age and autism severity) and activity area were found to be related to specific types of adult talk. Given the findings, implications for future research are discussed. PMID:24463432

Irvin, Dwight W; Boyd, Brian A; Odom, Samuel L

2015-02-01

114

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

PubMed Central

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) design, the CSRP provided multifaceted services to the treatment group, including teacher training and mental health consultation, which were accompanied by stress-reduction services and workshops. Overall, 90 teachers in 35 classrooms at 18 Head Start sites participated in the study. After adjusting for teacher and classroom factors and site fixed effects, we found that the CSRP had significant effects on the improvement of teachers’ perceived job control and work-related resources. We also found that the CSRP decreased teachers’ confidence in behavior management and had no statistically significant effects on job demands. Overall, we did not find significant moderation effects of teacher race/ethnicity, education, teaching experience, or teacher type. The implications for research and policy are discussed. PMID:21927538

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

2011-01-01

115

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

116

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. PMID:23656298

Marsico, Annalisa

2013-01-01

117

Gaining A Geological Perspective Through Active Learning in the Large Lecture Classroom  

Microsoft Academic Search

NATS 101 A Geological Perspective is a general education course taken by non science majors. We offer 600 seats per semester, with four large lecture sections taught by different faculty members. In the past we have offered optional once a week study groups taught by graduate teaching assistants. Students often feel overwhelmed by the science and associated jargon, and many

J. L. Kapp; R. M. Richardson; S. J. Slater

2008-01-01

118

Value-based Customer Grouping from Large Retail Data-sets Alexander Strehl and Joydeep Ghosh  

E-print Network

Value-based Customer Grouping from Large Retail Data-sets Alexander Strehl and Joydeep Ghosh correspondence to Joydeep Ghosh) Alexander Strehl: E-mail: strehl@ece.utexas.edu Joydeep Ghosh: E-mail: ghosh

Strehl, Alexander

119

Tips from the Classroom.  

ERIC Educational Resources Information Center

This group of classroom tips discusses the benefits of peer coaching, peer group conversation about teachers' classroom experiences, using visual displays for collegial sharing, using cultural brokers in educational settings, and the role of picture books in developing literacy skills in diverse students with disabilities. (Author/CK)

Benedetti, Teresa; De Gaetano, Yvonne; Weinstein-McShane, Ruth; Paez, Doris; McCarty, Laurie; Ehlers-Zavala, Fabiola; Bakken, Jeffrey P.

1997-01-01

120

Evaluation in the Classroom.  

ERIC Educational Resources Information Center

Six classroom research-based instructional projects funded under Chapter 2 are described, and their outcomes are summarized. The projects each used computer hardware and software in the classroom setting. The projects and their salient points include: (1) the Science Technology Project, in which 48 teachers and 2,847 students in 18 schools used…

Becnel, Shirley

121

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

122

Introduction to statistical methods to analyze large data sets: principal components analysis.  

PubMed

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. PMID:21917717

Clark, Neil R; Ma'ayan, Avi

2011-09-13

123

On Set Size Distribution Estimation and the Characterization of Large Networks via Sampling  

E-print Network

1 On Set Size Distribution Estimation and the Characterization of Large Networks via Sampling and we seek to recover the original set size distribution from the samples. This problem has applications impossible without resorting to sampling due to the size and scale of current networks. Practitioners often

Kurose, Jim

124

The Differentiated Classroom Observation Scale  

ERIC Educational Resources Information Center

This article presents a new classroom observation scale that was developed to examine the differential learning activities and experiences of gifted children educated in regular classroom settings. The Differentiated Classroom Observation Scale (DCOS) is presented in total, with clarification of the coding practices and strategies. Although the…

Cassady, Jerrell C.; Neumeister, Kristie L. Speirs; Adams, Cheryll M.; Cross, Tracy L.; Dixon, Felicia A.; Pierce, Rebecca L.

2004-01-01

125

LBGS: a smart approach for very large data sets vector quantization  

Microsoft Academic Search

In this paper, LBGS, a new parallel\\/distributed technique for Vector Quantization is presented. It derives from the well known LBG algorithm and has been designed for very complex problems where both large data sets and large codebooks are involved. Several heuristics have been introduced to make it suitable for implementation on paral- lel\\/distributed hardware. These lead to a slight deterioration

Giuseppe Campobello; Mirko Mantineo; Giuseppe Patanè; Marco Russo

2005-01-01

126

Multistatic tracking of dim targets in large sonobuoy fields using the metron blind data set  

Microsoft Academic Search

This paper describes an analysis of simulated multistatic active sonar data from a large sonobuoy field having large measurement errors, a low probability of detection and a high false alarm rate. The data comprises the first of five scenarios collectively known as scenario one of the Metron Blind data set. Single- and multi-hypothesis Kalman filter trackers are used to process

Garfield R. Mellema

2011-01-01

127

Active Learning in a Large Classroom for Teaching Physiology: Acid-Base Cases  

NSDL National Science Digital Library

The Active Learning exercise described here 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 approximately 150 students. Two Faculty, Drs. Dietz (a Physiology) and Dr. Panzarino (a Nephrologist) lead the discussions which are based on two clinical cases developed from actual patient data. The cases have already been published in the APS Teaching Archive previously (Objects 197 & 192). The Students are pre-assigned to groups of 5 or 6 and designated to sit in clusters to facilitate their individual group discussions. Each of the Faculty wears a lapel microphone and each carries a handheld microphone to pass between the student groups.

PhD John R. Dietz (University of South Florida Department of Physiology and Biophysics)

2011-08-03

128

Gaining A Geological Perspective Through Active Learning in the Large Lecture Classroom  

NASA Astrophysics Data System (ADS)

NATS 101 A Geological Perspective is a general education course taken by non science majors. We offer 600 seats per semester, with four large lecture sections taught by different faculty members. In the past we have offered optional once a week study groups taught by graduate teaching assistants. Students often feel overwhelmed by the science and associated jargon, and many are prone to skipping lectures altogether. Optional study groups are only attended by ~50% of the students. Faculty members find the class to be a lot of work, mainly due to the grading it generates. Activities given in lecture are often short multiple choice or true false assignments, limiting the depth of understanding we can evaluate. Our students often lack math and critical thinking skills, and we spend a lot of time in lecture reintroducing ideas students should have already gotten from the text. In summer 2007 we were funded to redesign the course. Our goals were to 1) cut the cost of running the course, and 2) improve student learning. Under our redesign optional study groups were replaced by once a week mandatory break out sessions where students complete activities that have been introduced in lecture. Break out sessions substitute for one hour of lecture, and are run by undergraduate preceptors and graduate teaching assistants (GTAs). During the lecture period, lectures themselves are brief with a large portion of the class devoted to active learning in small groups. Weekly reading quizzes are submitted via the online course management system. Break out sessions allow students to spend more time interacting with their fellow students, undergraduate preceptors, and GTAs. They get one on one help in break out sessions on assignments designed to enhance the lecture material. The active lecture format means less of their time is devoted to listening passively to a lecture, and more time is spent peer learning an interacting with the instructor. Completing quizzes online allows students more freedom in when and where they complete their work, and we provide instant feedback on their submitted work. The University of Wyoming Cognition in Astronomy, Physics and Earth sciences Research (CAPER) Team, who specialize in project evaluation, are leading the evaluation effort. We are comparing pre-test to post-test gains on the Geoscience Concept Inventory and Attitudes Toward Science surveys before and after the redesign, and inductive analysis of student interviews and reflective writing that describe student perceptions of the modified learning environment. The redesign has cut the cost of the class per student by more than half. This was achieved primarily in two ways: 1) by greatly reducing the number of hours spent by faculty and graduate teaching assistants on preparation, class time, and grading; and 2) reducing the number of graduate teaching assistants required for the class and replacing many of them with undergraduate preceptors. Undergraduate preceptors are not paid, but receive academic credit for their teaching service. The savings from the redesign is used to allow faculty more time to work on institutional priorities.

Kapp, J. L.; Richardson, R. M.; Slater, S. J.

2008-12-01

129

Secondary Data Analysis of Large Data Sets in Urology: Successes and Errors to Avoid  

PubMed Central

Purpose Secondary data analysis is the use of data collected for research by someone other than the investigator. In the last several years there has been a dramatic increase in the number of these studies being published in urological journals and presented at urological meetings, especially involving secondary data analysis of large administrative data sets. Along with this expansion, skepticism for secondary data analysis studies has increased for many urologists. Materials and Methods In this narrative review we discuss the types of large data sets that are commonly used for secondary data analysis in urology, and discuss the advantages and disadvantages of secondary data analysis. A literature search was performed to identify urological secondary data analysis studies published since 2008 using commonly used large data sets, and examples of high quality studies published in high impact journals are given. We outline an approach for performing a successful hypothesis or goal driven secondary data analysis study and highlight common errors to avoid. Results More than 350 secondary data analysis studies using large data sets have been published on urological topics since 2008 with likely many more studies presented at meetings but never published. Nonhypothesis or goal driven studies have likely constituted some of these studies and have probably contributed to the increased skepticism of this type of research. However, many high quality, hypothesis driven studies addressing research questions that would have been difficult to conduct with other methods have been performed in the last few years. Conclusions Secondary data analysis is a powerful tool that can address questions which could not be adequately studied by another method. Knowledge of the limitations of secondary data analysis and of the data sets used is critical for a successful study. There are also important errors to avoid when planning and performing a secondary data analysis study. Investigators and the urological community need to strive to use secondary data analysis of large data sets appropriately to produce high quality studies that hopefully lead to improved patient outcomes. PMID:24140846

Schlomer, Bruce J.; Copp, Hillary L.

2014-01-01

130

Subgroup discover in large size data sets preprocessed using stratified instance selection for increasing the presence of minority classes q  

E-print Network

Subgroup discover in large size data sets preprocessed using stratified instance selection August 2008 Communicated by W. Pedrycz Keywords: Large size data sets Scaling up Subgroup discovery problem which appears in the evalua- tion of large size data sets. In this paper we are interested

Granada, Universidad de

131

Engaged: Making Large Classes Feel Small through Blended Learning Instructional Strategies that Promote Increased Student Performance  

ERIC Educational Resources Information Center

It is not enough to be great at sharing information in a large classroom setting. To be an effective teacher you must be able to meaningfully engage your students with their peers and with the content. And you must do this regardless of class size or content. The issues of teaching effectively in large classroom settings have presented ongoing…

Francis, Raymond W.

2012-01-01

132

Culture in the Classroom  

ERIC Educational Resources Information Center

Culture plays a large but often unnoticeable role in what we teach and how we teach children. We are a country of immense diversity, but in classrooms the dominant European-American culture has become the language of learning.

Medin, Douglas L.; Bang, Megan

2014-01-01

133

Topology of Musical Techniques for discovering topological structures in large data sets are now  

E-print Network

Topology of Musical Data Techniques for discovering topological structures in large data sets in which to expect to find nontrivial topological features. The analysis is able to recover three important;Topological Surfaces Defined by Data The Betti numbers of a cloud of points depends on scale. For small, all

Sethares, William A.

134

A new clustering method for large symbolic data sets based on Kohonen maps  

Microsoft Academic Search

Symbolic data analysis (Bock and Diday (2000)) is concerned with the extension of classical data analysis and statistical methods to more complex data called symbolic data. In this paper we're interested in a new strategy (Baune (2006)) for clustering large symbolic quantitative data sets, based on two steps. The goal of the first step of the procedure is to reduce

Joffray Baune; Andre Hardy

135

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

136

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

137

A technique for moving large data sets over high-performance long distance networks  

Microsoft Academic Search

In this paper we look at the performance character- istics 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

Bradley W. Settlemyer; Jonathan D. Dobson; Stephen W. Hodson; Jeffery A. Kuehn; Stephen W. Poole; Thomas M. Ruwart

2011-01-01

138

A Wavelet Toolkit for Visualization and Analysis of Large Data Sets In Earthquake Research  

E-print Network

A Wavelet Toolkit for Visualization and Analysis of Large Data Sets In Earthquake Research G in earthquake physics and other nonlinear problems in the solid earth geosciences. Keywords: wavelets, visualization, grid computing, collaboration, web-based maps, earthquakes 1 Introduction As in many other fields

Erlebacher, Gordon

139

Preschoolers' Nonsymbolic Arithmetic with Large Sets: Is Addition More Accurate than Subtraction?  

ERIC Educational Resources Information Center

Adult and developing humans share with other animals analog magnitude representations of number that support nonsymbolic arithmetic with large sets. This experiment tested the hypothesis that such representations may be more accurate for addition than for subtraction in children as young as 3 1/2 years of age. In these tasks, the experimenter hid…

Shinskey, Jeanne L.; Chan, Cindy Ho-man; Coleman, Rhea; Moxom, Lauren; Yamamoto, Eri

2009-01-01

140

Large-scale detection of metals with a small set of fluorescent DNA-like chemosensors.  

PubMed

An important advantage of pattern-based chemosensor sets is their potential to detect and differentiate a large number of analytes with only few sensors. Here we test this principle at a conceptual limit by analyzing a large set of metal ion analytes covering essentially the entire periodic table, employing fluorescent DNA-like chemosensors on solid support. A tetrameric "oligodeoxyfluoroside" (ODF) library of 6561 members containing metal-binding monomers was screened for strong responders to 57 metal ions in solution. Our results show that a set of 9 chemosensors could successfully discriminate the 57 species, including alkali, alkaline earth, post-transition, transition, and lanthanide metals. As few as 6 ODF chemosensors could detect and differentiate 50 metals at 100 ?M; sensitivity for some metals was achieved at midnanomolar ranges. A blind test with 50 metals further confirmed the discriminating power of the ODFs. PMID:25255102

Yuen, Lik Hang; Franzini, Raphael M; Tan, Samuel S; Kool, Eric T

2014-10-15

141

Options in Education, Transcript for February 16, 1976: National Commitment to Equal Rights & Equal Educational Opportunity, Racial Conflict in the Classroom, Setting Up a Publishing Business, and Women in Education (Mathematics and Sex).  

ERIC Educational Resources Information Center

"Options in Education" is a radio news program which focuses on issues and developments in education. This transcript contains discussions of the national commitment to desegregated education, racial conflict in the classroom, learning how to set up a publishing business, women in education (mathematics and sex) and education news highlights.…

George Washington Univ., Washington, DC. Inst. for Educational Leadership.

142

Adaptation of Bharatanatyam Dance Pedagogy for Multicultural Classrooms: Questions and Relevance in a North American University Setting  

ERIC Educational Resources Information Center

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…

Banerjee, Suparna

2013-01-01

143

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. PMID:11079845

Benoît, G.; Andrews, J. E.

2000-01-01

144

COLLABORATIVE RESEARCH: Parallel Analysis Tools and New Visualization Techniques for Ultra-Large Climate Data Set  

SciTech Connect

ParVis was a project funded under LAB 10-05: “Earth System Modeling: Advanced Scientific Visualization of Ultra-Large Climate Data Sets”. Argonne was the lead lab with partners at PNNL, SNL, NCAR and UC-Davis. This report covers progress from January 1st, 2013 through Dec 1st, 2014. Two previous reports covered the period from Summer, 2010, through September 2011 and October 2011 through December 2012, respectively. While the project was originally planned to end on April 30, 2013, personnel and priority changes allowed many of the institutions to continue work through FY14 using existing funds. A primary focus of ParVis was introducing parallelism to climate model analysis to greatly reduce the time-to-visualization for ultra-large climate data sets. Work in the first two years was conducted on two tracks with different time horizons: one track to provide immediate help to climate scientists already struggling to apply their analysis to existing large data sets and another focused on building a new data-parallel library and tool for climate analysis and visualization that will give the field a platform for performing analysis and visualization on ultra-large datasets for the foreseeable future. In the final 2 years of the project, we focused mostly on the new data-parallel library and associated tools for climate analysis and visualization.

middleton, Don [Co-PI; Haley, Mary

2014-12-10

145

A Complementary Graphical Method for Reducing and Analyzing Large Data Sets*  

PubMed Central

Summary Objectives Graphical displays can make data more understandable; however, large graphs can challenge human comprehension. We have previously described a filtering method to provide high-level summary views of large data sets. In this paper we demonstrate our method for setting and selecting thresholds to limit graph size while retaining important information by applying it to large single and paired data sets, taken from patient and bibliographic databases. Methods Four case studies are used to illustrate our method. The data are either patient discharge diagnoses (coded using the International Classification of Diseases, Clinical Modifications [ICD9-CM]) or Medline citations (coded using the Medical Subject Headings [MeSH]). We use combinations of different thresholds to obtain filtered graphs for detailed analysis. The thresholds setting and selection, such as thresholds for node counts, class counts, ratio values, p values (for diff data sets), and percentiles of selected class count thresholds, are demonstrated with details in case studies. The main steps include: data preparation, data manipulation, computation, and threshold selection and visualization. We also describe the data models for different types of thresholds and the considerations for thresholds selection. Results The filtered graphs are 1%-3% of the size of the original graphs. For our case studies, the graphs provide 1) the most heavily used ICD9-CM codes, 2) the codes with most patients in a research hospital in 2011, 3) a profile of publications on “heavily represented topics” in MEDLINE in 2011, and 4) validated knowledge about adverse effects of the medication of rosiglitazone and new interesting areas in the ICD9-CM hierarchy associated with patients taking the medication of pioglitazone. Conclusions Our filtering method reduces large graphs to a manageable size by removing relatively unimportant nodes. The graphical method provides summary views based on computation of usage frequency and semantic context of hierarchical terminology. The method is applicable to large data sets (such as a hundred thousand records or more) and can be used to generate new hypotheses from data sets coded with hierarchical terminologies. PMID:24727931

Jing, X.; Cimino, J. J.

2014-01-01

146

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.

147

The Same or Separate? An Exploration of Teachers' Perceptions of the Classroom Assignment of Twins in Prior to School and Kindergarten to Year Two School Settings  

ERIC Educational Resources Information Center

This article investigates the perceptions of 12 teachers from New South Wales, Australia, regarding the classroom assignment of twins. Analysis of semi-structured interviews with each of the teachers revealed four key findings: 1) teachers' perceptions about the classroom assignment of twins vary according to their previous experience and…

Jones, Laura; De Gioia, Katey

2010-01-01

148

Classroom Acoustics  

MedlinePLUS

... desks or chairs. When sound lingers in a room there is more interference with speech. In a classroom it is important to have a short reverberation time. Who is affected by poor classroom acoustics? All children are affected by poor classroom acoustics, ...

149

Validating a large geophysical data set: Experiences with satellite-derived cloud parameters  

NASA Technical Reports Server (NTRS)

We are validating the global cloud parameters derived from the satellite-borne HIRS2 and MSU atmospheric sounding instrument measurements, and are using the analysis of these data as one prototype for studying large geophysical data sets in general. The HIRS2/MSU data set contains a total of 40 physical parameters, filling 25 MB/day; raw HIRS2/MSU data are available for a period exceeding 10 years. Validation involves developing a quantitative sense for the physical meaning of the derived parameters over the range of environmental conditions sampled. This is accomplished by comparing the spatial and temporal distributions of the derived quantities with similar measurements made using other techniques, and with model results. The data handling needed for this work is possible only with the help of a suite of interactive graphical and numerical analysis tools. Level 3 (gridded) data is the common form in which large data sets of this type are distributed for scientific analysis. We find that Level 3 data is inadequate for the data comparisons required for validation. Level 2 data (individual measurements in geophysical units) is needed. A sampling problem arises when individual measurements, which are not uniformly distributed in space or time, are used for the comparisons. Standard 'interpolation' methods involve fitting the measurements for each data set to surfaces, which are then compared. We are experimenting with formal criteria for selecting geographical regions, based upon the spatial frequency and variability of measurements, that allow us to quantify the uncertainty due to sampling. As part of this project, we are also dealing with ways to keep track of constraints placed on the output by assumptions made in the computer code. The need to work with Level 2 data introduces a number of other data handling issues, such as accessing data files across machine types, meeting large data storage requirements, accessing other validated data sets, processing speed and throughput for interactive graphical work, and problems relating to graphical interfaces.

Kahn, Ralph; Haskins, Robert D.; Knighton, James E.; Pursch, Andrew; Granger-Gallegos, Stephanie

1992-01-01

150

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 prohibits it from being used to cluster real world data containing categorical values. In this paper we present two algorithms which extend the k-means algorithm to categorical domains and domains with mixed numeric and categorical values. The k-modes algorithm uses

Zhexue Huang

1998-01-01

151

Utilization of pedigree information to estimate genetic parameters from large unbalanced data sets in apple  

Microsoft Academic Search

Genetic parameters (narrow-sense heritabilities and genetic correlations) were estimated for major agronomical traits in\\u000a apple from large unbalanced data sets, with the help of wide-pedigree information. The software REML VCE (Groeneveld 1996)\\u000a took into account the complex pedigree of the French apple-breeding population, thanks to the restricted maximum likelihood\\u000a procedure combined with the construction of the entire relationship matrix between

C. E. Durel; F. Laurens; A. Fouillet; Y. Lespinasse

1998-01-01

152

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

153

Classroom Management in Diverse Classrooms  

ERIC Educational Resources Information Center

Classroom management continues to be a serious concern for teachers and especially in urban and diverse learning environments. The authors present the culturally responsive classroom management practices of two teachers from an urban and diverse middle school to extend the construct, culturally responsive classroom management. The principles that…

Milner, H. Richard, IV; Tenore, F. Blake

2010-01-01

154

Your Outdoor Classroom  

ERIC Educational Resources Information Center

Physical education is still taught in outdoor settings in many warmer climates of the United States. Even when indoor facilities are available, physical education may be moved outside because of other curricular needs or facility issues. How can physical educators make the outdoor setting seem more like an indoor classroom? Outdoor teaching…

Hinman, Laurie

2005-01-01

155

Kernel Density Estimation, Kernel Methods, and Fast Learning in Large Data Sets.  

PubMed

Kernel methods such as the standard support vector machine and support vector regression trainings take O(N(3)) time and O(N(2)) space complexities in their naïve implementations, where N is the training set size. It is thus computationally infeasible in applying them to large data sets, and a replacement of the naive method for finding the quadratic programming (QP) solutions is highly desirable. By observing that many kernel methods can be linked up with kernel density estimate (KDE) which can be efficiently implemented by some approximation techniques, a new learning method called fast KDE (FastKDE) is proposed to scale up kernel methods. It is based on establishing a connection between KDE and the QP problems formulated for kernel methods using an entropy-based integrated-squared-error criterion. As a result, FastKDE approximation methods can be applied to solve these QP problems. In this paper, the latest advance in fast data reduction via KDE is exploited. With just a simple sampling strategy, the resulted FastKDE method can be used to scale up various kernel methods with a theoretical guarantee that their performance does not degrade a lot. It has a time complexity of O(m(3)) where m is the number of the data points sampled from the training set. Experiments on different benchmarking data sets demonstrate that the proposed method has comparable performance with the state-of-art method and it is effective for a wide range of kernel methods to achieve fast learning in large data sets. PMID:23797315

Wang, Shitong; Wang, Jun; Chung, Fu-Lai

2013-06-18

156

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 45Â?85 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)

2011-12-01

157

Multilocus analysis of variation using a large empirical data set: phenylpropanoid pathway genes in Arabidopsis thaliana.  

PubMed

Detecting the signature of adaptation on nucleotide variation is often difficult in species that like Arabidopsis thaliana might have a complex demographic history. Recent re-sequencing surveys in this species provided genome-wide information that would mainly reflect its demographic history. We have used a large empirical data set (LED) as well as multilocus coalescent simulations to analyse sequence variation at loci involved in the phenylpropanoid pathway of this species. We surveyed and examined DNA sequence variation at nine of these loci (about 19.7 kb) in 23 accessions of A. thaliana and one accession of its closely related species Arabidopsis lyrata. Nucleotide variation was lower at nonsynonymous sites than at silent sites in all loci, indicating generalized functional constraint at the protein level. No association between variation and position in the metabolic pathway was detected. When the data were contrasted against the standard neutral model, significant deviations for silent variation were detected with Tajima's D, Fu's F(S) and Fay and Wu's H multilocus test statistics. These deviations were in the same direction than in previous large-scale multilocus analyses, suggesting a genome-wide effect. When the nine-locus data set was contrasted against the large empirical data set, the level (Watterson's theta) and pattern of variation (Tajima's D) detected in these loci did not deviate either at the single-locus or multilocus level from the corresponding empirical distributions. These results would support an important role of the demographic history of A. thaliana in shaping nucleotide variation at the nine studied phenylpropanoid loci. The potential and limitations of the empirical distribution approach are discussed. PMID:18221273

Ramos-Onsins, S E; Puerma, E; Balañá-Alcaide, D; Salguero, D; Aguadé, M

2008-03-01

158

Unusually large shear wave anisotropy for chlorite in subduction zone settings  

NASA Astrophysics Data System (ADS)

first principle simulations we calculated the elasticity of chlorite. At a density ?~ 2.60 g cm-3, the elastic constant tensor reveals significant elastic anisotropy: VP ~27%, VS1 ~56%, and VS2 ~43%. The shear anisotropy is exceptionally large for chlorite and enhances upon compression. Upon compression, the shear elastic constant component C44 and C55 decreases, whereas C66 shear component stiffens. The softening in C44 and C55 is reflected in shear modulus, G, and the shear wave velocity, VS. Our results on elastic anisotropy at conditions relevant to the mantle wedge indicates that a 10-20 km layer of hydrated peridotite with serpentine and chlorite could account for the observed shear polarization anisotropy and associated large delay times of 1-2 s observed in some subduction zone settings. In addition, chlorite could also explain the low VP/VS ratios that have been observed in recent high-resolution seismological studies.

Mookherjee, Mainak; Mainprice, David

2014-03-01

159

Viewpoints: Interactive Exploration of Large Multivariate Earth and Space Science Data Sets  

NASA Astrophysics Data System (ADS)

Analysis and visualization of extremely large and complex data sets may be one of the most significant challenges facing earth and space science investigators in the forthcoming decades. While advances in hardware speed and storage technology have roughly kept up with (indeed, have driven) increases in database size, the same is not of our abilities to manage the complexity of these data. Current missions, instruments, and simulations produce so much data of such high dimensionality that they outstrip the capabilities of traditional visualization and analysis software. This problem can only be expected to get worse as data volumes increase by orders of magnitude in future missions and in ever-larger supercomputer simulations. For large multivariate data (more than 105 samples or records with more than 5 variables per sample) the interactive graphics response of most existing statistical analysis, machine learning, exploratory data analysis, and/or visualization tools such as Torch, MLC++, Matlab, S++/R, and IDL stutters, stalls, or stops working altogether. Fortunately, the graphics processing units (GPUs) built in to all professional desktop and laptop computers currently on the market are capable of transforming, filtering, and rendering hundreds of millions of points per second. We present a prototype open-source cross-platform application which leverages much of the power latent in the GPU to enable smooth interactive exploration and analysis of large high- dimensional data using a variety of classical and recent techniques. The targeted application is the interactive analysis of large, complex, multivariate data sets, with dimensionalities that may surpass 100 and sample sizes that may exceed 106-108.

Levit, C.; Gazis, P. R.

2006-05-01

160

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

PubMed

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. PMID:20682560

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

2010-09-01

161

Approaching the exa-scale: a real-world evaluation of rendering extremely large data sets  

SciTech Connect

Extremely large scale analysis is becoming increasingly important as supercomputers and their simulations move from petascale to exascale. The lack of dedicated hardware acceleration for rendering on today's supercomputing platforms motivates our detailed evaluation of the possibility of interactive rendering on the supercomputer. In order to facilitate our understanding of rendering on the supercomputing platform, we focus on scalability of rendering algorithms and architecture envisioned for exascale datasets. To understand tradeoffs for dealing with extremely large datasets, we compare three different rendering algorithms for large polygonal data: software based ray tracing, software based rasterization and hardware accelerated rasterization. We present a case study of strong and weak scaling of rendering extremely large data on both GPU and CPU based parallel supercomputers using Para View, a parallel visualization tool. Wc use three different data sets: two synthetic and one from a scientific application. At an extreme scale, algorithmic rendering choices make a difference and should be considered while approaching exascale computing, visualization, and analysis. We find software based ray-tracing offers a viable approach for scalable rendering of the projected future massive data sizes.

Patchett, John M [Los Alamos National Laboratory; Ahrens, James P [Los Alamos National Laboratory; Lo, Li - Ta [Los Alamos National Laboratory; Browniee, Carson S [Los Alamos National Laboratory; Mitchell, Christopher J [Los Alamos National Laboratory; Hansen, Chuck [UNIV OF UTAH

2010-10-15

162

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

163

Developing consistent Landsat data sets for large area applications: the MRLC 2001 protocol  

USGS Publications Warehouse

One of the major efforts in large area land cover mapping over the last two decades was the completion of two U.S. National Land Cover Data sets (NLCD), developed with nominal 1992 and 2001 Landsat imagery under the auspices of the MultiResolution Land Characteristics (MRLC) Consortium. Following the successful generation of NLCD 1992, a second generation MRLC initiative was launched with two primary goals: (1) to develop a consistent Landsat imagery data set for the U.S. and (2) to develop a second generation National Land Cover Database (NLCD 2001). One of the key enhancements was the formulation of an image preprocessing protocol and implementation of a consistent image processing method. The core data set of the NLCD 2001 database consists of Landsat 7 Enhanced Thematic Mapper Plus (ETM+) images. This letter details the procedures for processing the original ETM+ images and more recent scenes added to the database. NLCD 2001 products include Anderson Level II land cover classes, percent tree canopy, and percent urban imperviousness at 30-m resolution derived from Landsat imagery. The products are freely available for download to the general public from the MRLC Consortium Web site at http://www.mrlc.gov.

Chander, G.; Huang, C.; Yang, L.; Homer, C.; Larson, C.

2009-01-01

164

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

165

Efcient clustering of large EST data sets on parallel Anantharaman Kalyanaraman, Srinivas Aluru1,*, Suresh Kothari1  

E-print Network

Ef®cient clustering of large EST data sets on parallel computers Anantharaman Kalyanaraman of larger data sets. Using a combination of these techniques, we report the clustering of 168 200 used for EST assembly. Our software allows cluster- ing of much larger EST data sets than is possible

Brendel, Volker

166

Hierarchical Unbiased Graph Shrinkage (HUGS): A Novel Groupwise Registration for Large Data Set  

PubMed Central

Normalizing all images in a large data set into a common space is a key step in many clinical and research studies, e.g., for brain development, maturation, and aging. Recently, groupwise registration has been developed for simultaneous alignment of all images without selecting a particular image as template, thus potentially avoiding bias in the registration. However, most conventional groupwise registration methods do not explore the data distribution during the image registration. Thus, their performance could be affected by large inter-subject variations in the data set under registration. To solve this potential issue, we propose to use a graph to model the distribution of all image data sitting on the image manifold, with each node representing an image and each edge representing the geodesic pathway between two nodes (or images). Then, the procedure of warping all images to their population center turns to the dynamic shrinking of the graph nodes along their graph edges until all graph nodes become close to each other. Thus, the topology of image distribution on the image manifold is always preserved during the groupwise registration. More importantly, by modeling the distribution of all images via a graph, we can potentially reduce registration error since every time each image is warped only according to its nearby images with similar structures in the graph. We have evaluated our proposed groupwise registration method on both infant and adult data sets, by also comparing with the conventional group-mean based registration and the ABSORB methods. All experimental results show that our proposed method can achieve better performance in terms of registration accuracy and robustness. PMID:24055505

Ying, Shihui; Wu, Guorong; Wang, Qian; Shen, Dinggang

2014-01-01

167

21-inch common large-area display set for multiple military command and control workstation applications  

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 airborne C4I applications that currently use unique 19 inch CRTs. Engineers at Battelle have determined that by taking advantage of the latest flat panel display technology and the commonality between C4I applications, one display head (21 inch diagonal, 1280 by 1024) can be used in multiple applications. In addition, common modules are being designed by Battelle to reduce the number of installation- specific circuit card assemblies required for a particular application. 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 reduces the number of unique subassemblies in the USAF inventory by 56 to 66%. In addition to total module reductions, CLADs module/subassembly re-use across nine potential applications is estimated to be 73%. As more platforms implement CLADS, the percentage of module re-use increases. The new design is also expected to have a MTBF of at least 3350 hours, an order of magnitude better than one of the current systems. In the Joint STARS installation, more than 1400 pounds can be eliminated from the aircraft. In the E-3 installation, the CLADs is estimated to provide a power reduction of approximately 1750 watts per aircraft. This paper discuses the common large area display set design and it use in a variety of C4I applications that require a large area, high resolution, full color display.

Gorenflo, Ronald L.; Hermann, David J.

1996-05-01

168

Suffix tree searcher: exploration of common substrings in large DNA sequence sets  

PubMed Central

Background Large DNA sequence data sets require special bioinformatics tools to search and compare them. Such tools should be easy to use so that the data can be easily accessed by a wide array of researchers. In the past, the use of suffix trees for searching DNA sequences has been limited by a practical need to keep the trees in RAM. Newer algorithms solve this problem by using disk-based approaches. However, none of the fastest suffix tree algorithms have been implemented with a graphical user interface, preventing their incorporation into a feasible laboratory workflow. Results Suffix Tree Searcher (STS) is designed as an easy-to-use tool to index, search, and analyze very large DNA sequence datasets. The program accommodates very large numbers of very large sequences, with aggregate size reaching tens of billions of nucleotides. The program makes use of pre-sorted persistent "building blocks" to reduce the time required to construct new trees. STS is comprised of a graphical user interface written in Java, and four C modules. All components are automatically downloaded when a web link is clicked. The underlying suffix tree data structure permits extremely fast searching for specific nucleotide strings, with wild cards or mismatches allowed. Complete tree traversals for detecting common substrings are also very fast. The graphical user interface allows the user to transition seamlessly between building, traversing, and searching the dataset. Conclusions Thus, STS provides a new resource for the detection of substrings common to multiple DNA sequences or within a single sequence, for truly huge data sets. The re-searching of sequence hits, allowing wild card positions or mismatched nucleotides, together with the ability to rapidly retrieve large numbers of sequence hits from the DNA sequence files, provides the user with an efficient method of evaluating the similarity between nucleotide sequences by multiple alignment or use of Logos. The ability to re-use existing suffix tree pieces considerably shortens index generation time. The graphical user interface enables quick mastery of the analysis functions, easy access to the generated data, and seamless workflow integration. PMID:25053142

2014-01-01

169

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

170

Classroom Organization  

ERIC Educational Resources Information Center

Good organization skills are key to running an efficient classroom, and having the right tools makes it easier to manage all of the tasks, save time, and be more productive. Having the power of information when and where anyone need it makes a difference in how well any teacher runs the classroom and knows his or her students. A Palm handheld…

Technology & Learning, 2005

2005-01-01

171

Classroom Tour  

NSDL National Science Digital Library

In this 5-minute video a mathematics teacher demonstrates how she incorporates accessibility strategies into her physical classroom environment. Several details are shown about the organization and management of a math classroom with a view toward accessibility, expectations, kinesthetic involvement, and a positive environment.

TeacherLine

2012-01-01

172

Motif-based analysis of large nucleotide data sets using MEME-ChIP  

PubMed Central

MEME-ChIP is a web-based tool for analyzing motifs in large DNA or RNA data sets. It can analyze peak regions identified by ChIP-seq, cross-linking sites identified by cLIP-seq and related assays, as well as sets of genomic regions selected using other criteria. MEME-ChIP performs de novo motif discovery, motif enrichment analysis, motif location analysis and motif clustering, providing a comprehensive picture of the DNA or RNA motifs that are enriched in the input sequences. MEME-ChIP performs two complementary types of de novo motif discovery: weight matrix–based discovery for high accuracy; and word-based discovery for high sensitivity. Motif enrichment analysis using DNA or RNA motifs from human, mouse, worm, fly and other model organisms provides even greater sensitivity. MEME-ChIP’s interactive HTML output groups and aligns significant motifs to ease interpretation. this protocol takes less than 3 h, and it provides motif discovery approaches that are distinct and complementary to other online methods. PMID:24853928

Ma, Wenxiu; Noble, William S; Bailey, Timothy L

2014-01-01

173

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

174

Reorganizing Your Classroom.  

ERIC Educational Resources Information Center

Presents guidelines for teachers in competency-based education settings to use in establishing and maintaining a system of classroom and individual student progress charts and records. Describes the development of an instructional materials file to help students become more responsible for obtaining the materials needed for each lesson. (LRA)

Owenby, Ermine M.

1979-01-01

175

Classroom Management That Works  

ERIC Educational Resources Information Center

The purpose of this study was to find the best classroom management strategies to use when teaching in an elementary school setting. I wanted to conduct the best possible management tools for a variety of age groups as well as meet educational standards. Through my research I found different approaches in different grade levels is an important…

Cleve, Lauren

2012-01-01

176

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.

177

A multivariate approach to filling gaps in large ecological data sets using probabilistic matrix factorization techniques  

NASA Astrophysics Data System (ADS)

With the advent of remotely sensed data and coordinated efforts to create global databases, the ecological community has progressively become more data-intensive. However, in contrast to other disciplines, statistical ways of handling these large data sets, especially the gaps which are inherent to them, are lacking. Widely used theoretical approaches, for example model averaging based on Akaike's information criterion (AIC), are sensitive to missing values. Yet, the most common way of handling sparse matrices - the deletion of cases with missing data (complete case analysis) - is known to severely reduce statistical power as well as inducing biased parameter estimates. In order to address these issues, we present novel approaches to gap filling in large ecological data sets using matrix factorization techniques. Factorization based matrix completion was developed in a recommender system context and has since been widely used to impute missing data in fields outside the ecological community. Here, we evaluate the effectiveness of probabilistic matrix factorization techniques for imputing missing data in ecological matrices using two imputation techniques. Hierarchical Probabilistic Matrix Factorization (HPMF) effectively incorporates hierarchical phylogenetic information (phylogenetic group, family, genus, species and individual plant) into the trait imputation. Kernelized Probabilistic Matrix Factorization (KPMF) on the other hand includes environmental information (climate and soils) into the matrix factorization through kernel matrices over rows and columns. We test the accuracy and effectiveness of HPMF and KPMF in filling sparse matrices, using the TRY database of plant functional traits (http://www.try-db.org). TRY is one of the largest global compilations of plant trait databases (750 traits of 1 million plants), encompassing data on morphological, anatomical, biochemical, phenological and physiological features of plants. However, despite of unprecedented coverage, the TRY database is still very sparse, severely limiting joint trait analyses. Plant traits are the key to understanding how plants as primary producers adjust to changes in environmental conditions and in turn influence them. Forming the basis for Dynamic Global Vegetation Models (DGVMs), plant traits are also fundamental in global change studies for predicting future ecosystem changes. It is thus imperative that missing data is imputed in as accurate and precise a way as possible. In this study, we show the advantage of applying probabilistic matrix factorization techniques in incorporating hierarchical and environmental information for the prediction of missing plant traits as compared to conventional imputation techniques such as the complete case and mean approaches. We will discuss advantages of the proposed imputation techniques over other widely used methods such as multiple imputation (MI), as well as possible applications to other data sets.

Schrodt, F. I.; Shan, H.; Kattge, J.; Reich, P.; Banerjee, A.; Reichstein, M.

2012-12-01

178

Evaluation of flow resistance in gravel-bed rivers through a large field data set  

NASA Astrophysics Data System (ADS)

A data set of 2890 field measurements was used to test the ability of several conventional flow resistance equations to predict mean flow velocity in gravel bed rivers when used with no calibration. The tests were performed using both flow depth and discharge as input since discharge may be a more reliable measure of flow conditions in shallow flows. Generally better predictions are obtained when using flow discharge as input. The results indicate that the Manning-Strickler and the Keulegan equations show considerable disagreement with observed flow velocities for flow depths smaller than 10 times the characteristic grain diameter. Most equations show some systematic deviation for small relative flow depth. The use of new definitions for dimensionless variables in terms of nondimensional hydraulic geometry equations allows the development of a new flow resistance equation. The best overall performance is obtained by the Ferguson approach, which combines two power law flow resistance equations that are different for deep and shallow flows. To use this approach with flow discharge as input, a logarithmic matching equation in terms of the new dimensionless variables is proposed. For the domains of intermediate and large-scale roughness, the field data indicate a considerable increase in flow resistance as compared with the domain of small-scale roughness. The Ferguson approach is used to discuss the importance of flow resistance partitioning for bed load transport calculations at flow conditions with intermediate- and large-scale roughness in natural gravel, cobble, and boulder bed streams.

Rickenmann, Dieter; Recking, Alain

2011-07-01

179

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

180

Stacking of large interferometric data sets in the image- and uv-domain - a comparative study  

NASA Astrophysics Data System (ADS)

We present a new algorithm for stacking radio interferometric data in the uv-domain. The performance of uv-stacking is compared to the stacking of fully imaged data using simulated Atacama Large Millimeter/submillimeter Array and the Karl G. Jansky Very Large Array (VLA) deep extragalactic surveys. We find that image- and uv-stacking produce similar results, however, uv-stacking is typically the more robust method. An advantage of the uv-stacking algorithm is the availability of uv-data post-stacking, which makes it possible to identify and remove problematic baselines. For deep VLA surveys uv-stacking yields a signal-to-noise ratio that is up to 20 per cent higher than image-stacking. Furthermore, we have investigated stacking of resolved sources with a simulated VLA data set where 1.5 arcsec (10-12 kpc at z ˜ 1-4) sources are stacked. We find that uv-stacking, where a model is fitted directly to the visibilities, significantly improves the accuracy and robustness of the size estimates. While scientific motivation for this work is studying faint, high-z galaxies, the algorithm analysed here would also be applicable in other fields of astronomy. Stacking of radio interferometric data is also expected to play a big role for future surveys with telescopes such as Low-Frequency Array and Square Kilometre Array.

Lindroos, L.; Knudsen, K. K.; Vlemmings, W.; Conway, J.; Martí-Vidal, I.

2015-02-01

181

Large-scale bedforms along a tideless outer shelf setting in the western Mediterranean  

NASA Astrophysics Data System (ADS)

High-resolution multibeam swath-bathymetry and sediment samples were collected across the outer shelf region of the Columbretes Islands (southern Ebro continental shelf, western Mediterranean Sea). Bathymetric data from the submerged part of the Columbretes volcanic system revealed the presence of three main relict sand bodies along the outer shelf, at 80-116 m depth range, above which asymmetric and slightly asymmetric large and very large 2D and 3D subaqueous dunes were observed. These bed features were recognized, mapped and quantified with the aim of evaluating their potential formation mechanisms in relation to the local hydrodynamic and morphologic settings of the area. Dunes range from 150 to 760 m in wavelength and from tens of centimeters to 3 m in height, and are among the longest ever recognized in an outer shelf region. These bedforms are mostly composed of medium-sized sandy sediments, presumably coming from the degraded relict sand bodies on top of which they have developed, mixed with fine fractions from the recent draping holocenic sediments. The orientation of the dunes is SSW, progressively turning W towards the southernmost sector of the area, following the trend of the shelf-edge. Contemporary hydrodynamic measurements at the Ebro continental shelf-edge show that recorded currents are insufficient to form the observed bedforms and that stronger currents are required for sediment mobilization and dune formation. Based on their morphology and orientation, it is proposed that these bedforms are produced by the action of the southward-flowing Liguro-Provençal-Catalan (LPC) geostrophic current. The LPC probably reaches high near-bottom currents during energetic hydrodynamic events through interactions with the seafloor morphology of the study area. Subaqueous dunes are expected to be basically inactive features with respect to present-day processes, although they can be reactivated during high-energy events. The small ? h/ ? ratio measured in the dune fields of the Columbretes shelf revealed that the dune heights fall below the values predicted by the Flemming (1988) global equation, as observed in other outer shelf settings also dominated by unidirectional flows. This may suggest a different morphodynamic character of large dunes formed on outer shelves in a micro-tidal regime.

Lo Iacono, Claudio; Guillén, Jorge; Puig, Pere; Ribó, Marta; Ballesteros, Maria; Palanques, Albert; lí Farrán, Marcel; Acosta, Juan

2010-10-01

182

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

183

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 post…

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

2011-01-01

184

A Comparison of the Classroom and Playground Behaviour of Mildly Disabled and Non-Disabled Students in an Integrated Educational Setting.  

ERIC Educational Resources Information Center

Classroom and playground behaviors of 95 integrated mildly intellectually handicapped and mildly disabled students were compared with those of 95 nonhandicapped, age- and sex-matched regular class students. All subjects attended state government primary schools and were between 8 and 13 years of age. Subjects' behavior was observed in the…

Roberts, Clare; And Others

185

Assembly of large metagenome data sets using a Convey HC-1 hybrid core computer (7th Annual SFAF Meeting, 2012)  

SciTech Connect

Alex Copeland on "Assembly of large metagenome data sets using a Convey HC-1 hybrid core computer" at the 2012 Sequencing, Finishing, Analysis in the Future Meeting held June 5-7, 2012 in Santa Fe, New Mexico.

Copeland, Alex [DOE JGI] [DOE JGI

2012-06-01

186

Registering coherent change detection products associated with large image sets and long capture intervals  

DOEpatents

A set of co-registered coherent change detection (CCD) products is produced from a set of temporally separated synthetic aperture radar (SAR) images of a target scene. A plurality of transformations are determined, which transformations are respectively for transforming a plurality of the SAR images to a predetermined image coordinate system. The transformations are used to create, from a set of CCD products produced from the set of SAR images, a corresponding set of co-registered CCD products.

Perkins, David Nikolaus; Gonzales, Antonio I

2014-04-08

187

BACHSCORE. A tool for evaluating efficiently and reliably the quality of large sets of protein structures  

NASA Astrophysics Data System (ADS)

In protein structure prediction it is of crucial importance, especially at the refinement stage, to score efficiently large sets of models by selecting the ones that are closest to the native state. We here present a new computational tool, BACHSCORE, that allows its users to rank different structural models of the same protein according to their quality, evaluated by using the BACH++ (Bayesian Analysis Conformation Hunt) scoring function. The original BACH statistical potential was already shown to discriminate with very good reliability the protein native state in large sets of misfolded models of the same protein. BACH++ features a novel upgrade in the solvation potential of the scoring function, now computed by adapting the LCPO (Linear Combination of Pairwise Orbitals) algorithm. This change further enhances the already good performance of the scoring function. BACHSCORE can be accessed directly through the web server: bachserver.pd.infn.it. Catalogue identifier: AEQD_v1_0 Program summary URL:http://cpc.cs.qub.ac.uk/summaries/AEQD_v1_0.html Program obtainable from: CPC Program Library, Queen’s University, Belfast, N. Ireland Licensing provisions: GNU General Public License version 3 No. of lines in distributed program, including test data, etc.: 130159 No. of bytes in distributed program, including test data, etc.: 24 687 455 Distribution format: tar.gz Programming language: C++. Computer: Any computer capable of running an executable produced by a g++ compiler (4.6.3 version). Operating system: Linux, Unix OS-es. RAM: 1 073 741 824 bytes Classification: 3. Nature of problem: Evaluate the quality of a protein structural model, taking into account the possible “a priori” knowledge of a reference primary sequence that may be different from the amino-acid sequence of the model; the native protein structure should be recognized as the best model. Solution method: The contact potential scores the occurrence of any given type of residue pair in 5 possible contact classes (?-helical contact, parallel ?-sheet contact, anti-parallel ?-sheet contact, side-chain contact, no contact). The solvation potential scores the occurrence of any residue type in 2 possible environments: buried and solvent exposed. Residue environment is assigned by adapting the LCPO algorithm. Residues present in the reference primary sequence and not present in the model structure contribute to the model score as solvent exposed and as non contacting all other residues. Restrictions: Input format file according to the Protein Data Bank standard Additional comments: Parameter values used in the scoring function can be found in the file /folder-to-bachscore/BACH/examples/bach_std.par. Running time: Roughly one minute to score one hundred structures on a desktop PC, depending on their size.

Sarti, E.; Zamuner, S.; Cossio, P.; Laio, A.; Seno, F.; Trovato, A.

2013-12-01

188

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

189

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

Konstantinos Alexakos

2001-03-01

190

Flexible Classroom Furniture  

ERIC Educational Resources Information Center

Classroom design for the 21st-century learning environment should accommodate a variety of learning skills and needs. The space should be large enough so it can be configured to accommodate a number of learning activities. This also includes furniture that provides flexibility and accommodates collaboration and interactive work among students and…

Kim Hassell,

2011-01-01

191

Strategies in Classroom Management  

Microsoft Academic Search

Teaching—always a challenging profession —has, in today's complex society, become even more difficult. Large classes, sophisticated students, legal constraints, all compound the problems of dealing with student misbehavior. Today's teacher must be well-prepared to deal with problems, this author believes. He outlines six strategies that constitute a basic plan for classroom management.

Robert L. Shrigley

1979-01-01

192

Information Theoretic Approaches to Rapid Discovery of Relationships in Large Climate Data Sets  

NASA Technical Reports Server (NTRS)

Mutual information as the asymptotic Bayesian measure of independence is an excellent starting point for investigating the existence of possible relationships among climate-relevant variables in large data sets, As mutual information is a nonlinear function of of its arguments, it is not beholden to the assumption of a linear relationship between the variables in question and can reveal features missed in linear correlation analyses. However, as mutual information is symmetric in its arguments, it only has the ability to reveal the probability that two variables are related. it provides no information as to how they are related; specifically, causal interactions or a relation based on a common cause cannot be detected. For this reason we also investigate the utility of a related quantity called the transfer entropy. The transfer entropy can be written as a difference between mutual informations and has the capability to reveal whether and how the variables are causally related. The application of these information theoretic measures is rested on some familiar examples using data from the International Satellite Cloud Climatology Project (ISCCP) to identify relation between global cloud cover and other variables, including equatorial pacific sea surface temperature (SST), over seasonal and El Nino Southern Oscillation (ENSO) cycles.

Knuth, Kevin H.; Rossow, William B.; Clancy, Daniel (Technical Monitor)

2002-01-01

193

Anomaly Detection in Large Sets of High-Dimensional Symbol Sequences  

NASA Technical Reports Server (NTRS)

This paper addresses the problem of detecting and describing anomalies in large sets of high-dimensional symbol sequences. The approach taken uses unsupervised clustering of sequences using the normalized longest common subsequence (LCS) as a similarity measure, followed by detailed analysis of outliers to detect anomalies. As the LCS measure is expensive to compute, the first part of the paper discusses existing algorithms, such as the Hunt-Szymanski algorithm, that have low time-complexity. We then discuss why these algorithms often do not work well in practice and present a new hybrid algorithm for computing the LCS that, in our tests, outperforms the Hunt-Szymanski algorithm by a factor of five. The second part of the paper presents new algorithms for outlier analysis that provide comprehensible indicators as to why a particular sequence was deemed to be an outlier. The algorithms provide a coherent description to an analyst of the anomalies in the sequence, compared to more normal sequences. The algorithms we present are general and domain-independent, so we discuss applications in related areas such as anomaly detection.

Budalakoti, Suratna; Srivastava, Ashok N.; Akella, Ram; Turkov, Eugene

2006-01-01

194

The Effective Use of Stations to Teach Elementary Students in a Small Classroom Setting About Cardiopulmonary Physiology - PhUn Week Poster Session EB 2011  

NSDL National Science Digital Library

This poster describes a Physiology Understanding (PhUn) Week activity performed with 3rd and 5th grade elementary students in limited classroom space that demonstrated how the heart and lung work together to meet tissue demands. This poster was presented at the PhUn Week Poster Session, Experimental Biology 2011, by Michael J. Ryan, PhD, University of Mississippi Medical Center.

PhD Michael J Ryan (University of Mississippi Medical Center)

2011-05-07

195

Finding Large 3-free Sets I: The Small n Case William Gasarch a  

E-print Network

no arithmetic progressions of length 3. We call such sets 3-free. Most of the work has been asymptotic sets, Arithmetic Sequence, Arithmetic Progression, van der Waerden's Theorem, non-averaging sets-AP is an arithmetic progression of length k. Theorem 2 (van der Waerden (41) but see also (18)) For all k, for all c

Kruskal, Clyde

196

Perturbation corrections to Koopmans' theorem. V - A study with large basis sets  

NASA Technical Reports Server (NTRS)

The vertical ionization potentials of N2, F2 and H2O were calculated by perturbation corrections to Koopmans' theorem using six different basis sets. The largest set used includes several sets of polarization functions. Comparison is made with measured values and with results of computations using Green's functions.

Chong, D. P.; Langhoff, S. R.

1982-01-01

197

A Study of Classroom Response System Clickers: Increasing Student Engagement and Performance in a Large Undergraduate Lecture Class on Architectural Research  

ERIC Educational Resources Information Center

This study examines the effectiveness of a classroom response system (CRS) and architecture students' perceptions of real-time feedback. CRS is designed to increase active engagement of students by their responses to a question or prompt via wireless keypads. Feedback is immediately portrayed on a classroom projector for discussion. The authors…

Bachman, Leonard; Bachman, Christine

2011-01-01

198

The learning environment in clicker classrooms: student processes of learning and involvement in large university?level courses using student response systems  

Microsoft Academic Search

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 classroom. Survey responses of over 1500 undergraduates enrolled

April R. Trees; Michele H. Jackson

2007-01-01

199

Interactive 3-D Immersive Visualization for Analysis of Large Multi-Parameter Atmospheric Data Sets  

NASA Astrophysics Data System (ADS)

Significant improvements in the ability of atmospheric chemistry models to predict the transport and production of atmospheric constituents on regional and global scales have been realized over the past decade. Concurrent with the model improvements, has been an increase in the size and complexity of atmospheric observational data sets. As a result, the challenge to provide efficient and realistic visualization of atmospheric data "products" has increased dramatically. Over the past several years, personnel from the Atmospheric Sciences Data Center (ASDC) at NASA's Langley Research Center have explored the merits of visualizing atmospheric data products using interactive, immersive visualization hardware and software. As part of this activity, the Virtual Global Explorer and Observatory (vGeo) software, developed by VRCO, Inc., has been utilized to support the visual analysis of large multivariate data sets. The vGeo software provides an environment in which the user can create, view, navigate, and interact with data, models, and images in an immersive 3-D environment. The vGeo visualization capability was employed during the March/April 2001, NASA Global Tropospheric Experiment Transport and Chemical Evolution over the Pacific (TRACE-P) mission [(GTE) http://www-gte.larc.nasa.gov] to support day-to-day flight-planning activities through the creation of virtual 3-D worlds containing modeled data and proposed aircraft flight paths. The GTE, a major activity within NASA's Earth Science Enterprise, is primarily an aircraft-based measurement program, supplemented by ground-based measurements and satellite observations, focused on understanding the impact of human activity on the global troposphere. The TRACE-P is the most recent campaign conducted by GTE and was deployed to Hong Kong and then to the Yokota Airbase, Japan. TRACE-P is the third in a series of GTE field campaigns in the northwestern Pacific region to understand the chemical composition of air masses emerging from the Asian Continent and their impact on the region. Since completing the field deployment phase of TRACE-P, the 3-D visualization capability has been used as a tool to combine and visually analyze TRACE-P data from multiple sources (e.g. model, airborne and ground based measurements, ozone sondes, and satellite observations). This capability to merge measurements into model data fields in a virtual 3-D world is perhaps the most exciting aspect of this new visualization capability. This allows for a more realistic contextual representation of the model/measurement results. The measured parameters along specific flights (of typical duration of 8 hrs) along with supporting ancillary measurements provide the "real" representation of the atmosphere at that specific point in time and space. The models provide the time evolution, and three-dimensional structure during the measurement period. When these are merged together the context of the observations is documented, and model predictions can be validated and/or improved. Specific TRACE-P case studies will be presented showing results from global and regional models coupled with airborne measurements for which the influence of transport on the spatial distribution of species measured on the aircraft was more clearly discerned within the 3-D environment than from conventional visualization techniques.

Frenzer, J. B.; Hoell, J. M.; Holdzkom, J. J.; Jacob, D.; Fuelberg, H.; Avery, M.; Carmichael, G.; Hopkins, D. L.

2001-12-01

200

Tools for Analysis and Visualization of Large Time-Varying CFD Data Sets  

NASA Technical Reports Server (NTRS)

In the second year, we continued to built upon and improve our scanline-based direct volume renderer that we developed in the first year of this grant. This extremely general rendering approach can handle regular or irregular grids, including overlapping multiple grids, and polygon mesh surfaces. It runs in parallel on multi-processors. It can also be used in conjunction with a k-d tree hierarchy, where approximate models and error terms are stored in the nodes of the tree, and approximate fast renderings can be created. We have extended our software to handle time-varying data where the data changes but the grid does not. We are now working on extending it to handle more general time-varying data. We have also developed a new extension of our direct volume renderer that uses automatic decimation of the 3D grid, as opposed to an explicit hierarchy. We explored this alternative approach as being more appropriate for very large data sets, where the extra expense of a tree may be unacceptable. We also describe a new approach to direct volume rendering using hardware 3D textures and incorporates lighting effects. Volume rendering using hardware 3D textures is extremely fast, and machines capable of using this technique are becoming more moderately priced. While this technique, at present, is limited to use with regular grids, we are pursuing possible algorithms extending the approach to more general grid types. We have also begun to explore a new method for determining the accuracy of approximate models based on the light field method described at ACM SIGGRAPH '96. In our initial implementation, we automatically image the volume from 32 equi-distant positions on the surface of an enclosing tessellated sphere. We then calculate differences between these images under different conditions of volume approximation or decimation. We are studying whether this will give a quantitative measure of the effects of approximation. We have created new tools for exploring the differences between images produced by various rendering methods. Images created by our software can be stored in the SGI RGB format. Our idtools software reads in pair of images and compares them using various metrics. The differences of the images using the RGB, HSV, and HSL color models can be calculated and shown. We can also calculate the auto-correlation function and the Fourier transform of the image and image differences. We will explore how these image differences compare in order to find useful metrics for quantifying the success of various visualization approaches. In general, progress was consistent with our research plan for the second year of the grant.

Wilhelms, Jane; VanGelder, Allen

1997-01-01

201

Accelerated EM-based clustering of large data sets Jakob J. Verbeek (j.j.verbeek@uva.nl) , Jan R.J. Nunnink  

E-print Network

Accelerated EM-based clustering of large data sets Jakob J. Verbeek (j.j.verbeek@uva.nl) , Jan R by the poor performance (linear complexity) of the EM algorithm in clustering large data sets, and inspired energy, kd-trees, large data sets. 1. Introduction Mixture models provide a rigorous framework

Paris-Sud XI, Université de

202

Large Carnivore Management in a MultiLevel Institutional Setting: Problems and Prospects  

Microsoft Academic Search

The goal of the large carnivore policies in Finland, Norway and Sweden (Fennoscandia) is to establish sustainable management of the four large (mammal) carnivores; bear ( ursus arctos ), wolf ( canis lupus ), lynx ( lynx lynx ) wolverine ( gulo gulo ) but also the golden eagle ( aquila chrysaetos ). Since this is clearly in conflict with

Camilla Sandström; Jani Pellikka

203

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

204

Classroom Antarctica  

NSDL National Science Digital Library

As part of the Australian Antarctic Division, Classroom Antarctica gives dozens of downloadable Adobe Acrobat files that allow students to discover this unique continent. Subjects include the history of the scientific research undertaken on Antarctica, surviving its climate, its biological ecosystem, the land's physical characteristics and affects on climate, and much more.

1969-12-31

205

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

206

Jigsaw Classroom  

NSDL National Science Digital Library

The Jigsaw Classroom is a website for the jigsaw cooperative learning technique that strives to reduce racial conflict, promote better learning, improve motivation, and increase the enjoyment of the learning experience among school children. The website includes an overview of jigsaw techniques, jigsaw history, implementing tips, related books and articles, and links on cooperative learning, school violence, and jigsaw developer Elliot Aronson.

Aronson, Elliot; Network, Social P.

207

A large epidemic of hepatitis B in Serbia: an integrated model for outbreak investigations in healthcare settings.  

PubMed

We report a comprehensive approach for outbreak investigations, including cluster analysis (Bernoulli model), an algorithm to build inferential models, and molecular techniques to confirm cases. Our approach may be an interesting tool to best exploit the large amount of unsystematically collected information available during outbreak investigations in healthcare settings. PMID:24799653

Lanini, Simone; ?osi?, Gorana; Menzo, Stefano; Puro, Vincenzo; ?uri?, Predrag; Garbuglia, Anna Rosa; Miloševi?, Vesna; Kara?, Tatjana; Capobianchi, Maria Rosaria; Ippolito, Giuseppe

2014-06-01

208

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

209

Ssecrett and NeuroTrace: Interactive Visualization and Analysis Tools for Large-Scale Neuroscience Data Sets  

PubMed Central

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, Won-Ki; Beyer, Johanna; Hadwiger, Markus; Blue, Rusty; Law, Charles; Vázquez-Reina, Amelio; Reid, R. Clay; Lichtman, Jeff; Pfister, Hanspeter

2010-01-01

210

Creation of libraries of recurring mass spectra from large data sets assisted by a dual-column workflow.  

PubMed

An analytical methodology has been developed for extracting recurrent unidentified spectra (RUS) from large GC/MS data sets. Spectra were first extracted from original data files by the Automated Mass Spectral Deconvolution and Identification System (AMDIS; Stein, S. E. J. Am. Soc. Mass Spectrom. 1999 , 10 , 770 - 781 ) using settings designed to minimize spurious spectra, followed by searching the NIST library with all unidentified spectra. The spectra that could not be identified were then filtered to remove poorly deconvoluted data and clustered. The results were assumed to be unidentified components. This was tested by requiring each unidentified spectrum to be found in two chromatographic columns with slightly different stationary phases. This methodology has been applied to a large set of pediatric urine samples. A library of spectra and retention indices for derivatized urine components, both identified and recurrent unidentified, has been created and is available for download. PMID:25233296

Mallard, W Gary; Andriamaharavo, N Rabe; Mirokhin, Yuri A; Halket, John M; Stein, Stephen E

2014-10-21

211

STRESSOR DATA SETS FOR STUDYING SPECIES DIVERSITY AT LARGE SPATIAL SCALES  

EPA Science Inventory

There is increasing scientific and societal concern over the impact of anthropogenic activities (e.g., habitat destruction, pollution) on biodiversity. he impact of anthropogenic activities on biodiversity is generally recognized as a global phenomenon. t large spatial scales, se...

212

Analysis and application of large-scale protein-protein interaction data sets  

Microsoft Academic Search

Protein-protein interactions play key roles in cells. Lots of experimental approaches andin silico methods have been developed to identify and predict large-scale protein-protein interactions. However, compared with the\\u000a traditionally experimental results, the high-throughput protein-protein interaction data often contain the false positives\\u000a in high probability. In order to fully utilize the large-scale data, it is necessary to develop bioinformatic methods for

Jingchun Sun; Jinlin Xu; Yixue Li; Tieliu Shi

2005-01-01

213

Fingerprinting Large Data Sets through Memory De-duplication Technique in Virtual Machines  

E-print Network

in use in a cloud computing environment when the virtual machine (VM) hypervisors adopt the memory de]. In this research we seek to investigate data set identification in the cloud computing environment when the virtual--Because of intellectual property, user privacy, and several other reasons, many scientific and military projects choose

Wang, Weichao

214

Fingerprinting large data sets through memory de-duplication technique in virtual machines  

Microsoft Academic Search

Because of intellectual property, user privacy, and several other reasons, many scientific and military projects choose to hide the information about the data sets that they are using for analysis and computation. Attackers have designed various mechanisms to compromise the operating system or database management system to steal such information. In this paper, we propose a non-interactive mechanism to identify

Rodney Owens; Weichao Wang

2011-01-01

215

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

216

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

217

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

218

The PRRS Host Genomic Consortium (PHGC) Database: Management of large data sets.  

Technology Transfer Automated Retrieval System (TEKTRAN)

In any consortium project where large amounts of phenotypic and genotypic data are collected across several research labs, issues arise with maintenance and analysis of datasets. The PRRS Host Genomic Consortium (PHGC) Database was developed to meet this need for the PRRS research community. The sch...

219

Number Bias for the Discrimination of Large Visual Sets in Infancy  

ERIC Educational Resources Information Center

This brief report attempts to resolve the claim that infants preferentially attend to continuous variables over number [e.g. Psychol. Sci. 10 (1999) 408; Cognit. Psychol.44 (2002) 33] with the finding that when continuous variables are controlled, infants as young as 6-months of age discriminate large numerical values [e.g. Psychol. Sci. 14 (2003)…

Brannon, Elizabeth M.; Abbott, Sara; Lutz, Donna J.

2004-01-01

220

A New Method for Mining Regression Classes in Large Data Sets  

Microsoft Academic Search

Extracting patterns and models of interest from large databases is attracting much attention in a variety of disciplines. Knowledge discovery in databases (KDD) and data mining (DM) are areas of common interest to researchers in machine learning, pattern recognition, statistics, artificial intelligence, and high performance computing. An effective and robust method, the regression class mixture decomposition (RCMD) method, is proposed

Yee Leung; Jiang-hong Ma; Wen-xiu Zhang

2001-01-01

221

Optimizing the distribution of large data sets in theory and practice  

Microsoft Academic Search

SUMMARY Multicasting large amounts of data efficiently to all nodes of a PC cluster is an important operation. In the form of a partition cast it can be used to replicate entire software installations by cloning. Optimizing a partition cast for a given cluster of PCs reveals some interesting architectural tradeoffs, since the fastest solution does not only depend on

Felix Rauch; Christian Kurmann; Thomas M. Stricker

2002-01-01

222

Partition Cast — Modelling and Optimizing the Distribution of Large Data Sets in PC Clusters  

Microsoft Academic Search

Multicasting large amounts of data efficiently to all nodes of a PC cluster is an important operation. In the form of a partition cast it can be used to replicate entire software installations by cloning. Optimizing a partition cast for a given cluster of\\u000a PCs reveals some interesting architectural tradeoffs, since the fastest solution does not only depend on the

Felix Rauch; Christian Kurmann; Thomas M. Stricker

223

Design of Availability-Dependent Distributed Services in Large-Scale Uncooperative Settings  

ERIC Educational Resources Information Center

Thesis Statement: "Availability-dependent global predicates can be efficiently and scalably realized for a class of distributed services, in spite of specific selfish and colluding behaviors, using local and decentralized protocols". Several types of large-scale distributed systems spanning the Internet have to deal with availability variations…

Morales, Ramses Victor

2009-01-01

224

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

225

Application of Transcultural Themes in International Classrooms  

ERIC Educational Resources Information Center

The effective use of transcultural themes and images may help promote positive resonance in international settings, such as found in the traditional and online classrooms of globalizing higher education. Findings of transculturally resonant themes and images may be applied to international classroom pedagogy through such means as multimedia…

Van Hook, Steven R.

2007-01-01

226

Enhancing Vocabulary Development in Multiple Classroom Contexts.  

ERIC Educational Resources Information Center

Describes ways teachers can enhance students' vocabulary development through multiple contexts available in typical middle school classroom settings. Addresses questions about vocabulary learning and offers suggestions for enhancing vocabulary with narrative and expository texts that involve multiple classroom contexts. Considers the Vocab-o-gram…

Harmon, Janis M.; Staton, Denise G.

1999-01-01

227

High-throughput film-densitometry: An efficient approach to generate large data sets  

SciTech Connect

A film-handling machine (robot) has been built which can, in conjunction with a commercially available film densitometer, exchange and digitize over 300 electron micrographs per day. Implementation of robotic film handling effectively eliminates the delay and tedium associated with digitizing images when data are initially recorded on photographic film. The modulation transfer function (MTF) of the commercially available densitometer is significantly worse than that of a high-end, scientific microdensitometer. Nevertheless, its signal-to-noise ratio (S/N) is quite excellent, allowing substantial restoration of the output to ''near-to-perfect'' performance. Due to the large area of the standard electron microscope film that can be digitized by the commercial densitometer (up to 10,000 x 13,680 pixels with an appropriately coded holder), automated film digitization offers a fast and inexpensive alternative to high-end CCD cameras as a means of acquiring large amounts of image data in electron microscopy.

Typke, Dieter; Nordmeyer, Robert A.; Jones, Arthur; Lee, Juyoung; Avila-Sakar, Agustin; Downing, Kenneth H.; Glaeser, Robert M.

2004-07-14

228

High-throughput film-densitometry: an efficient approach to generate large data sets.  

PubMed

A film-handling machine (robot) has been built which can, in conjunction with a commercially available film densitometer, exchange and digitize over 300 electron micrographs per day. Implementation of robotic film handling effectively eliminates the delay and tedium associated with digitizing images when data are initially recorded on photographic film. The modulation transfer function (MTF) of the commercially available densitometer is significantly worse than that of a high-end, scientific microdensitometer. Nevertheless, its signal-to-noise ratio (S/N) is quite excellent, allowing substantial restoration of the output to "near-to-perfect" performance. Due to the large area of the standard electron microscope film that can be digitized by the commercial densitometer (up to 10,000 x 13,680 pixels with an appropriately coded holder), automated film digitization offers a fast and inexpensive alternative to high-end CCD cameras as a means of acquiring large amounts of image data in electron microscopy. PMID:15629654

Typke, Dieter; Nordmeyer, Robert A; Jones, Arthur; Lee, Juyoung; Avila-Sakar, Agustin; Downing, Kenneth H; Glaeser, Robert M

2005-01-01

229

'Circle Segments': A Technique for Visually Exploring Large Multidimensional Data Sets  

Microsoft Academic Search

In this paper, we describe a novel technique for visualizing large amounts of high-dimensio nal data, called 'circle segments'. The technique uses one colored pixel per data value and can therefore be classified as a pixel-per-value technique (Kei 96). The basic idea of the 'circle segments' visualization technique is to display the data dimensions as segments of a circle. If

Mihael Ankerst; Daniel A. Keim; Hans-Peter Kriegel

1996-01-01

230

Parallel k-Means Clustering for Quantitative Ecoregion Delineation Using Large Data Sets  

SciTech Connect

Identification of geographic ecoregions has long been of interest to environmental scientists and ecologists for identifying regions of similar ecological and environmental conditions. Such classifications are important for predicting suitable species ranges, for stratification of ecological samples, and to help prioritize habitat preservation and remediation efforts. Hargrove and Hoffman (1999, 2009) have developed geographical spatio-temporal clustering algorithms and codes and have successfully applied them to a variety of environmental science domains, including ecological regionalization; environmental monitoring network design; analysis of satellite-, airborne-, and ground-based remote sensing, and climate model-model and model-measurement intercomparison. With the advances in state-of-the-art satellite remote sensing and climate models, observations and model outputs are available at increasingly high spatial and temporal resolutions. Long time series of these high resolution datasets are extremely large in size and growing. Analysis and knowledge extraction from these large datasets are not just algorithmic and ecological problems, but also pose a complex computational problem. This paper focuses on the development of a massively parallel multivariate geographical spatio-temporal clustering code for analysis of very large datasets using tens of thousands processors on one of the fastest supercomputers in the world.

Kumar, Jitendra [ORNL] [ORNL; Mills, Richard T [ORNL] [ORNL; Hoffman, Forrest M [ORNL] [ORNL; HargroveJr., William Walter [USDA Forest Service

2011-01-01

231

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

232

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

233

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.

234

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

235

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. PMID:23044707

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

236

Distortion-invariant optical filter sets for large-class problems: OCR case study  

NASA Astrophysics Data System (ADS)

An OCR machine printed problem is selected as an example of a large class pattern recognition problem. We consider discrimination of alpha and numeric fields, recognition of all numbers, recognition of key words (street suffixes, personal titles), state/city/street names, etc. These operations are performed on destination address blocks (DABs) in the face of numerous variations in the type face (laser writer, dot matrix, typewriter, etc.), font, data drop out (due to printing errors), point size, +/- 5 degree(s) rotations, etc. An optical correlator with banks of distortion invariant hierarchical/inference filters appears to be an ideal adjunct to other OCR techniques (AI, parsing, context, use of lexicons, etc.).

Casasent, David P.

1992-02-01

237

Plastic set of smooth large radii of curvature thermal conductance specimens at light loads.  

NASA Technical Reports Server (NTRS)

Thermal contact conductance test data at high vacuum were obtained from two Armco iron specimens having smooth, large radii of curvature, convex, one-half wave length surfaces. The data are compared with calculations based on two macroscopic elastic deformation theories and an empirical expression. Major disagreement with the theories and fair agreement with the empirical expression resulted. Plastic deformation of all the contacting surfaces was verified from surface analyzer statistics. These results indicate that the theoretical assumption of macroscopic elastic deformation is inadequate for accurate prediction of heat transfer with light loads for Armco iron specimens similar to those used in this investigation.

Mckinzie, D. J., Jr.

1972-01-01

238

Plastic set of smooth large radii of curvature thermal conductance specimens at light loads  

NASA Technical Reports Server (NTRS)

Thermal contact conductance test data at high vacuum were obtained from two Armco iron specimens having smooth, large radii of curvature, convex, one-half wave length surfaces. The data are compared with calculations based on two macroscopic elastic deformation theories and an empirical expression. Major disagreement with the theories and fair agreement with the empirical expression resulted. Plastic deformation of all the contacting surfaces was verified from surface analyzer statistics. These results indicate that the theoretical assumption of macroscopic elastic deformation is inadequate for accurate prediction of heat transfer with light loads for Armco iron specimens similar to those used in this investigation.

Mckinzie, D. J., Jr.

1972-01-01

239

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

240

Processing large sensor data sets for safeguards : the knowledge generation system.  

SciTech Connect

Modern nuclear facilities, such as reprocessing plants, present inspectors with significant challenges due in part to the sheer amount of equipment that must be safeguarded. The Sandia-developed and patented Knowledge Generation system was designed to automatically analyze large amounts of safeguards data to identify anomalous events of interest by comparing sensor readings with those expected from a process of interest and operator declarations. This paper describes a demonstration of the Knowledge Generation system using simulated accountability tank sensor data to represent part of a reprocessing plant. The demonstration indicated that Knowledge Generation has the potential to address several problems critical to the future of safeguards. It could be extended to facilitate remote inspections and trigger random inspections. Knowledge Generation could analyze data to establish trust hierarchies, to facilitate safeguards use of operator-owned sensors.

Thomas, Maikel A.; Smartt, Heidi Anne; Matthews, Robert F.

2012-04-01

241

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

242

SeqPig: simple and scalable scripting for large sequencing data sets in Hadoop  

PubMed Central

Summary: Hadoop MapReduce-based approaches have become increasingly popular due to their scalability in processing large sequencing datasets. However, as these methods typically require in-depth expertise in Hadoop and Java, they are still out of reach of many bioinformaticians. To solve this problem, we have created SeqPig, a library and a collection of tools to manipulate, analyze and query sequencing datasets in a scalable and simple manner. SeqPigscripts use the Hadoop-based distributed scripting engine Apache Pig, which automatically parallelizes and distributes data processing tasks. We demonstrate SeqPig’s scalability over many computing nodes and illustrate its use with example scripts. Availability and Implementation: Available under the open source MIT license at http://sourceforge.net/projects/seqpig/ Contact: andre.schumacher@yahoo.com Supplementary information: Supplementary data are available at Bioinformatics online. PMID:24149054

Schumacher, André; Pireddu, Luca; Niemenmaa, Matti; Kallio, Aleksi; Korpelainen, Eija; Zanetti, Gianluigi; Heljanko, Keijo

2014-01-01

243

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

244

Broad-Enrich: functional interpretation of large sets of broad genomic regions  

PubMed Central

Motivation: Functional enrichment testing facilitates the interpretation of Chromatin immunoprecipitation followed by high-throughput sequencing (ChIP-seq) data in terms of pathways and other biological contexts. Previous methods developed and used to test for key gene sets affected in ChIP-seq experiments treat peaks as points, and are based on the number of peaks associated with a gene or a binary score for each gene. These approaches work well for transcription factors, but histone modifications often occur over broad domains, and across multiple genes. Results: To incorporate the unique properties of broad domains into functional enrichment testing, we developed Broad-Enrich, a method that uses the proportion of each gene’s locus covered by a peak. We show that our method has a well-calibrated false-positive rate, performing well with ChIP-seq data having broad domains compared with alternative approaches. We illustrate Broad-Enrich with 55 ENCODE ChIP-seq datasets using different methods to define gene loci. Broad-Enrich can also be applied to other datasets consisting of broad genomic domains such as copy number variations. Availability and implementation: http://broad-enrich.med.umich.edu for Web version and R package. Contact: sartorma@umich.edu Supplementary information: Supplementary data are available at Bioinformatics online. PMID:25161225

Cavalcante, Raymond G.; Lee, Chee; Welch, Ryan P.; Patil, Snehal; Weymouth, Terry; Scott, Laura J.; Sartor, Maureen A.

2014-01-01

245

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

246

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.

247

Can Wide Consultation Help with Setting Priorities for Large-Scale Biodiversity Monitoring Programs?  

PubMed Central

Climate and other global change phenomena affecting biodiversity require monitoring to track ecosystem changes and guide policy and management actions. Designing a biodiversity monitoring program is a difficult task that requires making decisions that often lack consensus due to budgetary constrains. As monitoring programs require long-term investment, they also require strong and continuing support from all interested parties. As such, stakeholder consultation is key to identify priorities and make sound design decisions that have as much support as possible. Here, we present the results of a consultation conducted to serve as an aid for designing a large-scale biodiversity monitoring program for the province of Québec (Canada). The consultation took the form of a survey with 13 discrete choices involving tradeoffs in respect to design priorities and 10 demographic questions (e.g., age, profession). The survey was sent to thousands of individuals having expected interests and knowledge about biodiversity and was completed by 621 participants. Overall, consensuses were few and it appeared difficult to create a design fulfilling the priorities of the majority. Most participants wanted 1) a monitoring design covering the entire territory and focusing on natural habitats; 2) a focus on species related to ecosystem services, on threatened and on invasive species. The only demographic characteristic that was related to the type of prioritization was the declared level of knowledge in biodiversity (null to high), but even then the influence was quite small. PMID:25525798

Boivin, Frédéric; Simard, Anouk; Peres-Neto, Pedro

2014-01-01

248

"Tools For Analysis and Visualization of Large Time- Varying CFD Data Sets"  

NASA Technical Reports Server (NTRS)

During the four years of this grant (including the one year extension), we have explored many aspects of the visualization of large CFD (Computational Fluid Dynamics) datasets. These have included new direct volume rendering approaches, hierarchical methods, volume decimation, error metrics, parallelization, hardware texture mapping, and methods for analyzing and comparing images. First, we implemented an extremely general direct volume rendering approach that can be used to render rectilinear, curvilinear, or tetrahedral grids, including overlapping multiple zone grids, and time-varying grids. Next, we developed techniques for associating the sample data with a k-d tree, a simple hierarchial data model to approximate samples in the regions covered by each node of the tree, and an error metric for the accuracy of the model. We also explored a new method for determining the accuracy of approximate models based on the light field method described at ACM SIGGRAPH (Association for Computing Machinery Special Interest Group on Computer Graphics) '96. In our initial implementation, we automatically image the volume from 32 approximately evenly distributed positions on the surface of an enclosing tessellated sphere. We then calculate differences between these images under different conditions of volume approximation or decimation.

Wilhelms, Jane; vanGelder, Allen

1999-01-01

249

80 million tiny images: a large data set for nonparametric object and scene recognition.  

PubMed

With the advent of the Internet, billions of images are now freely available online and constitute a dense sampling of the visual world. Using a variety of non-parametric methods, we explore this world with the aid of a large dataset of 79,302,017 images collected from the Internet. Motivated by psychophysical results showing the remarkable tolerance of the human visual system to degradations in image resolution, the images in the dataset are stored as 32 x 32 color images. Each image is loosely labeled with one of the 75,062 non-abstract nouns in English, as listed in the Wordnet lexical database. Hence the image database gives a comprehensive coverage of all object categories and scenes. The semantic information from Wordnet can be used in conjunction with nearest-neighbor methods to perform object classification over a range of semantic levels minimizing the effects of labeling noise. For certain classes that are particularly prevalent in the dataset, such as people, we are able to demonstrate a recognition performance comparable to class-specific Viola-Jones style detectors. PMID:18787244

Torralba, Antonio; Fergus, Rob; Freeman, William T

2008-11-01

250

New Ways of Classroom Assessment. Revised  

ERIC Educational Resources Information Center

In this revised edition in the popular New Ways Series, teachers have once again been given an opportunity to show how they do assessment in their classrooms on an everyday basis. Often feeling helpless when confronted with large-scale standardized testing practices, teachers here offer classroom testing created with the direct aim of helping…

Brown, J. D., Ed.

2013-01-01

251

Actual Versus Estimated Utility Factor of a Large Set of Privately Owned Chevrolet Volts  

SciTech Connect

In order to determine the overall fuel economy of a plug-in hybrid electric vehicle (PHEV), the amount of operation in charge depleting (CD) versus charge sustaining modes must be determined. Mode of operation is predominantly dependent on customer usage of the vehicle and is therefore highly variable. The utility factor (UF) concept was developed to quantify the distance a group of vehicles has traveled or may travel in CD mode. SAE J2841 presents a UF calculation method based on data collected from travel surveys of conventional vehicles. UF estimates have been used in a variety of areas, including the calculation of window sticker fuel economy, policy decisions, and vehicle design determination. The EV Project, a plug-in electric vehicle charging infrastructure demonstration being conducted across the United States, provides the opportunity to determine the real-world UF of a large group of privately owned Chevrolet Volt extended range electric vehicles. Using data collected from Volts enrolled in The EV Project, this paper compares the real-world UF of two groups of Chevrolet Volts to estimated UF's based on J2841. The actual observed fleet utility factors (FUF) for the MY2011/2012 and MY2013 Volt groups studied were observed to be 72% and 74%, respectively. Using the EPA CD ranges, the method prescribed by J2841 estimates a FUF of 65% and 68% for the MY2011/2012 and MY2013 Volt groups, respectively. Volt drivers achieved higher percentages of distance traveled in EV mode for two reasons. First, they had fewer long-distance travel days than drivers in the national travel survey referenced by J2841. Second, they charged more frequently than the J2841 assumption of once per day - drivers of Volts in this study averaged over 1.4 charging events per day. Although actual CD range varied widely as driving conditions varied, the average CD ranges for the two Volt groups studied matched the EPA CD range estimates, so CD range variation did not affect FUF results.

John Smart; Thomas Bradley; Stephen Schey

2014-04-01

252

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

253

Getting Started in Classroom Computing.  

ERIC Educational Resources Information Center

Written for secondary students, this booklet provides an introduction to several computer-related concepts through a set of six classroom games, most of which can be played with little more than a sheet of paper and a pencil. The games are: 1) SECRET CODES--introduction to binary coding, punched cards, and paper tape; 2) GUESS--efficient methods…

Ahl, David H.

254

Classroom Culture Promotes Academic Resiliency  

ERIC Educational Resources Information Center

Resiliency is what propels many students to continue moving forward under difficult learning and life conditions. We intuitively think that such resilience is a character quality that cannot be taught. On the contrary, when a teacher sets the right conditions and culture for it in the classroom by teaching collaboration and communication skills,…

DiTullio, Gina

2014-01-01

255

The Physics Classroom: Waves  

NSDL National Science Digital Library

This web page contains an in-depth tutorial on the properties and behavior of waves, suitable for beginning students of physics. It features multiple animations to accompany the text, plus self-guided question-and-answer sets. Included is a discussion of the nature and anatomy of waves, how wave energy is transported, and an overview of standing waves and harmonic patterns. This item is part of The Physics Classroom, a web-based collection of tutorials for high school physics students.

Henderson, Tom

2009-02-12

256

Knowledge and theme discovery across very large biological data sets using distributed queries: a prototype combining unstructured and structured data.  

PubMed

As the discipline of biomedical science continues to apply new technologies capable of producing unprecedented volumes of noisy and complex biological data, it has become evident that available methods for deriving meaningful information from such data are simply not keeping pace. In order to achieve useful results, researchers require methods that consolidate, store and query combinations of structured and unstructured data sets efficiently and effectively. As we move towards personalized medicine, the need to combine unstructured data, such as medical literature, with large amounts of highly structured and high-throughput data such as human variation or expression data from very large cohorts, is especially urgent. For our study, we investigated a likely biomedical query using the Hadoop framework. We ran queries using native MapReduce tools we developed as well as other open source and proprietary tools. Our results suggest that the available technologies within the Big Data domain can reduce the time and effort needed to utilize and apply distributed queries over large datasets in practical clinical applications in the life sciences domain. The methodologies and technologies discussed in this paper set the stage for a more detailed evaluation that investigates how various data structures and data models are best mapped to the proper computational framework. PMID:24312478

Mudunuri, Uma S; Khouja, Mohamad; Repetski, Stephen; Venkataraman, Girish; Che, Anney; Luke, Brian T; Girard, F Pascal; Stephens, Robert M

2013-01-01

257

Knowledge and Theme Discovery across Very Large Biological Data Sets Using Distributed Queries: A Prototype Combining Unstructured and Structured Data  

PubMed Central

As the discipline of biomedical science continues to apply new technologies capable of producing unprecedented volumes of noisy and complex biological data, it has become evident that available methods for deriving meaningful information from such data are simply not keeping pace. In order to achieve useful results, researchers require methods that consolidate, store and query combinations of structured and unstructured data sets efficiently and effectively. As we move towards personalized medicine, the need to combine unstructured data, such as medical literature, with large amounts of highly structured and high-throughput data such as human variation or expression data from very large cohorts, is especially urgent. For our study, we investigated a likely biomedical query using the Hadoop framework. We ran queries using native MapReduce tools we developed as well as other open source and proprietary tools. Our results suggest that the available technologies within the Big Data domain can reduce the time and effort needed to utilize and apply distributed queries over large datasets in practical clinical applications in the life sciences domain. The methodologies and technologies discussed in this paper set the stage for a more detailed evaluation that investigates how various data structures and data models are best mapped to the proper computational framework. PMID:24312478

Repetski, Stephen; Venkataraman, Girish; Che, Anney; Luke, Brian T.; Girard, F. Pascal; Stephens, Robert M.

2013-01-01

258

Student Perceptions of Classroom Achievement Goals as Predictors of Belonging and Content Instrumentality  

ERIC Educational Resources Information Center

The goal of the current study was to examine the predictive relationships among a set of cognitive-motivational variables that have been found in previous studies to support academic achievement. Student perception of a classroom's achievement goal structure (classroom mastery, classroom performance-approach, classroom performance-avoidance) was…

Walker, Christopher O.

2012-01-01

259

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

260

Enterolith ileus: liberated large jejunal diverticulum enterolith causing small bowel obstruction in the setting of jejunal diverticulitis  

PubMed Central

We present an 80-year-old man with multiple medical problems, and acute abdominal pain with feculent emesis. An unenhanced CT examination of the abdomen and pelvis demonstrated jejunal diverticulitis and findings of high-grade small bowel obstruction caused by a large enterolith. Enterolith ileus has rarely been reported in the radiology literature. This phenomenon has occasionally been reported in the surgical and gastroenterology literature. We highlight the CT findings associated with enterolith ileus in the setting of jejunal diverticulitis, to alert radiologists to this unusual diagnosis. PMID:21750131

Garnet, D J; Scalcione, L R; Barkan, A; Katz, D S

2011-01-01

261

Combing rough set and RBF neural network for large-scale ship recognition in optical satellite images  

NASA Astrophysics Data System (ADS)

Large scale ship recognition in optical remote sensing images is of great importance for many military applications. It aims to recognize the category information of the detected ships for effective maritime surveillance. The contributions of the paper can be summarized as follows: Firstly, based on the rough set theory, the common discernibility degree is used to compute the significance weight of each candidate feature and select valid recognition features automatically; Secondly, RBF neural network is constructed based on the selected recognition features. Experiments on recorded optical satellite images show the proposed method is effective and can get better classification rates at a higher speed than the state of the art methods.

Chunyan, Lu; Huanxin, Zou; Hao, Sun; Shilin, Zhou

2014-03-01

262

The Physics Classroom: Electric Current  

NSDL National Science Digital Library

This is an interactive tutorial for introductory physics on electric current and the requirements of an electric circuit. From a conceptual standpoint, it explores the nature of charge flow and the function of the charge carriers. From the mathematical standpoint, it explains current as a rate quantity and provides simple exercises to calculate the flow of current. 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

263

Classroom Management and Teachers' Coping Strategies: Inside Classrooms in Australia, China and Israel  

ERIC Educational Resources Information Center

This paper discusses the degree to which recently reported relationships between the classroom management techniques and coping styles of Australian teachers apply in two other national settings: China and Israel. Little is known about which teacher characteristics relate to their approach to classroom management, although researchers in Australia…

Romi, Shlomo; Lewis, Ramon; Roache, Joel

2013-01-01

264

Revoicing Classrooms: A Spatial Manifesto  

ERIC Educational Resources Information Center

Why is the physical learning environment in schools largely ignored by teachers within pedagogical practice? The cellular classroom has remained seemingly immutable since the Industrial Revolution, with spatiality playing a silent and subconscious role in schooling other than related to concerns around surveillance. Previous studies have shown…

Fisher, Kenn

2004-01-01

265

Mendel in the Modern Classroom  

NASA Astrophysics Data System (ADS)

Mendel is an icon in the history of genetics and part of our common culture and modern biology instruction. The aim of this paper is to summarize the place of Mendel in the modern biology classroom. In the present article we will identify key issues that make Mendel relevant in the classroom today. First, we recount some of the historical controversies that have relevance to modern curricular design, such as Fisher's (Ann Sci 1:115-137, 1936/2008) claim that Mendel's data were too good to be true. We also address questions about Mendel's status as the father of genetics as well as questions about the sequencing of Mendel's work in genetics instruction in relation to modern molecular genetics and evolution. Next, we present a systematic set of examples of research based approaches to the use of Mendel in the modern classroom along with criticisms of these designs and questions about the historical accuracy of the story of Mendel as presented in the typical classroom. Finally, we identify gaps in our understanding in need of further study and present a selected set of resources that, along with the references cited, should be valuable to science educators interested in further study of the story of Mendel.

Smith, Mike U.; Gericke, Niklas M.

2015-01-01

266

New BAC probe set to narrow down chromosomal breakpoints in small and large derivative chromosomes, especially suited for mosaic conditions.  

PubMed

Fluorescence in situ hybridization (FISH) and/or array-comparative genomic hybridization (aCGH) performed after initial banding cytogenetics is still the gold standard for detection of chromosomal rearrangements. Although aCGH provides a higher resolution, FISH has two main advantages over the array-based approaches: (1) it can be applied to characterize balanced as well as unbalanced rearrangements, whereas aCGH is restricted to unbalanced ones, and (2) chromosomal aberrations present in low level or complex mosaics can be characterized by FISH without any problems, while aCGH requires presence of over 50 % of aberrant cells in the sample for detection. Recently, a new FISH-based probe set was presented: the so-called pericentric-ladder-FISH (PCL-FISH) that enables characterization of chromosomal breakpoints especially in mosaic small supernumerary marker chromosomes (sSMC). It can also be applied on large inborn or acquired derivative chromosomes. The main feature of this set is that the probes are applied in a chromosome-specific manner and they align along the chromosome in average intervals of ten megabasepairs. Hence PCL-FISH provides denser coverage and a more precise anchorage on the human DNA-sequence than most other FISH-banding approaches. PMID:25239752

Hamid, Ahmed B; Fan, Xiaobo; Kosyakova, Nadezda; Radhakrishnan, Gopakumar; Liehr, Thomas; Karamysheva, Tatyana

2015-01-01

267

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. PMID:22102584

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

2012-01-01

268

Grafting computer projected simulations and interactive engagement methods within a traditional classroom setting: The influence on secondary level students' understanding of Newtonian mechanics and on attitudes towards physics  

NASA Astrophysics Data System (ADS)

This research explored the effects of a constructivist approach using computer projected simulations (CPS) and interactive engagement (IE) methods on 12th grade school students. The treatment lasted 18 weeks during the 1999-2000 fall semester and seeked to evaluate three variations in students': (1)conceptual understanding of Newtonian mechanics as measured by the Force Concept Inventory (FCI), (2)modification of their views about science as measured by the Views About Science Survey (VASS), and (3)achievement on traditional examinations, as measured by their end of semester grades. Analysis of Covariance (ANCOVA) was applied to determine the differences between the mean scores of the experimental group students, and students of the control group, who were exposed to traditional teaching methods only. The FCI data analysis showed that, after 18 weeks, conceptual understanding of Newtonian mechanics had markedly improved only in the experimental group (F(1,99) = 44.739, p < .001). By contrast, there was no statistically significant difference in students' performance on the VASS instrument for both groups (F(1,99) = .033, p = .856), confirming previous and comparable findings for studies of short implementation period. The lack of statistically significant difference between the control and experimental groups in graded achievement, while controlling for students' previous achievement, was unexpected (F(1,99) = 1.178, p = .280). It is suggested that in this particular setting, the influence of a technical factor may have been overlooked: the monitored and systematic drill exercises using elaborate math formulae to prepare students for traditional math-loaded exams. Still, despite being intentionally deprived of such preparation throughout the study, students of the experimental group did not achieve less than their counterpart, and in addition, they had gained a satisfactory understanding of Newtonian mechanics. This result points unmistakably at a plausible positive correlation between a better grasp of basic concepts in physics in a challenging and active engagement environment, and unproblematic achievement in traditional exams. Despite the modest sample size of the studied groups, students here, as elsewhere in the world, show a manifest readiness and capacity to master proper understanding of Newtonian mechanics when induced by the IE methods in a constructivist, semi-Socratic, environment.

Zoubeir, Wassim Fouad

269

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

270

Twelve tips for "flipping" the classroom.  

PubMed

Abstract The flipped classroom is a pedagogical model in which the typical lecture and homework elements of a course are reversed. The following tips outline the steps involved in making a successful transition to a flipped classroom approach. The tips are based on the available literature alongside the author's experience of using the approach in a medical education setting. Flipping a classroom has a number of potential benefits, for example increased educator-student interaction, but must be planned and implemented carefully to support effective learning. PMID:25154646

Moffett, Jennifer

2014-08-26

271

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

272

Inside the Primary Classroom.  

ERIC Educational Resources Information Center

Presents some of the findings of the ORACLE research program (Observational Research and Classroom Learning Evaluation), a detailed observational study of teacher-student interaction, teaching styles, and management methods within a sample of primary classrooms. (Editor/SJL)

Simon, Brian

1980-01-01

273

Classroom Creature Culture: Algae to Anoles  

NSDL National Science Digital Library

Living organisms are important classroom resources and require appropriate, responsible care. This anthology of articles from NSTA's award-winning journal Science and Children provides the basics about collecting, investigating, and caring for plants and animals in classroom settings. From daddy longlegs to box turtles, from duckweed to butterflies, emphasis is placed on responsible observation, respect for living beings, and the individual needs of nature's many creatures. Also makes an excellent complement to ecological studies.

1994-01-01

274

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

275

Simulation Studies as Designed Experiments: The Comparison of Penalized Regression Models in the “Large p, Small n” Setting  

PubMed Central

New algorithms are continuously proposed in computational biology. Performance evaluation of novel methods is important in practice. Nonetheless, the field experiences a lack of rigorous methodology aimed to systematically and objectively evaluate competing approaches. Simulation studies are frequently used to show that a particular method outperforms another. Often times, however, simulation studies are not well designed, and it is hard to characterize the particular conditions under which different methods perform better. In this paper we propose the adoption of well established techniques in the design of computer and physical experiments for developing effective simulation studies. By following best practices in planning of experiments we are better able to understand the strengths and weaknesses of competing algorithms leading to more informed decisions about which method to use for a particular task. We illustrate the application of our proposed simulation framework with a detailed comparison of the ridge-regression, lasso and elastic-net algorithms in a large scale study investigating the effects on predictive performance of sample size, number of features, true model sparsity, signal-to-noise ratio, and feature correlation, in situations where the number of covariates is usually much larger than sample size. Analysis of data sets containing tens of thousands of features but only a few hundred samples is nowadays routine in computational biology, where “omics” features such as gene expression, copy number variation and sequence data are frequently used in the predictive modeling of complex phenotypes such as anticancer drug response. The penalized regression approaches investigated in this study are popular choices in this setting and our simulations corroborate well established results concerning the conditions under which each one of these methods is expected to perform best while providing several novel insights. PMID:25289666

Chaibub Neto, Elias; Bare, J. Christopher; Margolin, Adam A.

2014-01-01

276

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

277

Pivotal Response Teaching in the Classroom Setting  

ERIC Educational Resources Information Center

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…

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

2010-01-01

278

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

279

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

280

Early Miocene Kirka-Phrigian caldera, western Anatolia - an example of large volume silicic magma generation in extensional setting  

NASA Astrophysics Data System (ADS)

Large rhyolitic ignimbrite occurrences are close connected to the Early Miocene initiation of extensional processes in the central-west Anatolia along Ta?vanl?-Afyon zones. Field correlations, petrographical, geochemical and geochronological data lead to a substantial reinterpretation of the ignimbrite surrounding K?rka area, known from its world-class borate deposits, as representing the climatic event of a caldera collapse, unknown up to now and newly named "K?rka-Phrigian caldera". The caldera, which is roughly oval (24 km x 15km) in shape, one of the largest in Turkey, is supposed to have been formed in a single stage collapse event, at ~19 Ma that generated huge volume extracaldera outflow ignimbrites. Transtensive/distensive tectonic stresses since 25 Ma ago resulted in the NNW-SSE elongation of the magma chamber and influenced the roughly elliptical shape of the subsided block (caldera floor) belonging to the apex of Eski?ehir-Afyon-Isparta volcanic area. Intracaldera post-collapse sedimentation and volcanism (at ~ 18 Ma) was controlled through subsidence-related faults with generation of a series of volcanic structures (mainly domes) showing a large compositional range from saturated silicic rhyolites and crystal-rich trachytes to undersaturated lamproites. Such volcanic rock association is typical for lithospheric extension. In this scenario, enriched mantle components within the subcontinental lithospheric mantle will begin to melt via decompression melting during the initiation of extension. Interaction of these melts with crustal rocks, fractionation processes and crustal anatexis driven by the heat contained in the ascending mantle melts produced the silicic compositions in a large crustal reservoir. Such silicic melts generated the initial eruptions of K?rka-Phrigian caldera ignimbrites. The rock volume and geochemical evidence suggests that silicic volcanic rocks come from a long-lived magma chamber that evolved episodically; after caldera generation there is a shift to small volume episodic rhyolitic, trachytic and lamproitic volcanism, the last ones indicating a more primitive magma input with evident origin in an enriched mantle lithosphere. The volcanic rock succession provides a direct picture of the state of the magmatic system at the time of eruptions that generated caldera and post-caldera structures and offer an excellent example for silicic magma generation and associated potassic and ultrapotassic intermediate-mafic rocks in post-collisional extensional setting.

Seghedi, Ioan; Helvac?, Cahit

2014-05-01

281

Development of a large-sample watershed-scale hydrometeorological data set for the contiguous USA: data set characteristics and assessment of regional variability in hydrologic model performance  

NASA Astrophysics Data System (ADS)

We present a community data set of daily forcing and hydrologic response data for 671 small- to medium-sized basins across the contiguous United States (median basin size of 336 km2) that spans a very wide range of hydroclimatic conditions. Area-averaged forcing data for the period 1980-2010 was generated for three basin spatial configurations - basin mean, hydrologic response units (HRUs) and elevation bands - by mapping daily, gridded meteorological data sets to the subbasin (Daymet) and basin polygons (Daymet, Maurer and NLDAS). Daily streamflow data was compiled from the United States Geological Survey National Water Information System. The focus of this paper is to (1) present the data set for community use and (2) provide a model performance benchmark using the coupled Snow-17 snow model and the Sacramento Soil Moisture Accounting Model, calibrated using the shuffled complex evolution global optimization routine. After optimization minimizing daily root mean squared error, 90% of the basins have Nash-Sutcliffe efficiency scores ?0.55 for the calibration period and 34% ? 0.8. This benchmark provides a reference level of hydrologic model performance for a commonly used model and calibration system, and highlights some regional variations in model performance. For example, basins with a more pronounced seasonal cycle generally have a negative low flow bias, while basins with a smaller seasonal cycle have a positive low flow bias. Finally, we find that data points with extreme error (defined as individual days with a high fraction of total error) are more common in arid basins with limited snow and, for a given aridity, fewer extreme error days are present as the basin snow water equivalent increases.

Newman, A. J.; Clark, M. P.; Sampson, K.; Wood, A.; Hay, L. E.; Bock, A.; Viger, R. J.; Blodgett, D.; Brekke, L.; Arnold, J. R.; Hopson, T.; Duan, Q.

2015-01-01

282

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

283

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

284

Just in Time to Flip Your Classroom  

NASA Astrophysics Data System (ADS)

With advocates like Sal Khan and Bill Gates, flipped classrooms are attracting an increasing amount of media and research attention.2 We had heard Khan's TED talk and were aware of the concept of inverted pedagogies in general. Yet it really hit home when we accidentally flipped our classroom. Our objective was to better prepare our students for class. We set out to effectively move some of our course content outside of class and decided to tweak the Just-in-Time Teaching approach (JiTT).3 To our surprise, this tweak—which we like to call the flip-JiTT—ended up completely flipping our classroom. What follows is narrative of our experience and a procedure that any teacher can use to extend JiTT to a flipped classroom.

Lasry, Nathaniel; Dugdale, Michael; Charles, Elizabeth

2014-01-01

285

Empirical Mining of Large Data Sets Already Helps to Solve Practical Ecological Problems; A Panoply of Working Examples (Invited)  

NASA Astrophysics Data System (ADS)

Here we present diverse examples where empirical mining and statistical analysis of large data sets have already been shown to be useful for a wide variety of practical decision-making problems within the realm of large-scale ecology. Because a full understanding and appreciation of particular ecological phenomena are possible only after hypothesis-directed research regarding the existence and nature of that process, some ecologists may feel that purely empirical data harvesting may represent a less-than-satisfactory approach. Restricting ourselves exclusively to process-driven approaches, however, may actually slow progress, particularly for more complex or subtle ecological processes. We may not be able to afford the delays caused by such directed approaches. Rather than attempting to formulate and ask every relevant question correctly, empirical methods allow trends, relationships and associations to emerge freely from the data themselves, unencumbered by a priori theories, ideas and prejudices that have been imposed upon them. Although they cannot directly demonstrate causality, empirical methods can be extremely efficient at uncovering strong correlations with intermediate "linking" variables. In practice, these correlative structures and linking variables, once identified, may provide sufficient predictive power to be useful themselves. Such correlation "shadows" of causation can be harnessed by, e.g., Bayesian Belief Nets, which bias ecological management decisions, made with incomplete information, toward favorable outcomes. Empirical data-harvesting also generates a myriad of testable hypotheses regarding processes, some of which may even be correct. Quantitative statistical regionalizations based on quantitative multivariate similarity have lended insights into carbon eddy-flux direction and magnitude, wildfire biophysical conditions, phenological ecoregions useful for vegetation type mapping and monitoring, forest disease risk maps (e.g., sudden oak death), global aquatic ecoregion risk maps for aquatic invasives, and forest vertical structure ecoregions (e.g., using extensive LiDAR data sets). Multivariate Spatio-Temporal Clustering, which quantitatively places alternative future conditions on a common footing with present conditions, allows prediction of present and future shifts in tree species ranges, given alternative climatic change forecasts. ForWarn, a forest disturbance detection and monitoring system mining 12 years of national 8-day MODIS phenology data, has been operating since 2010, producing national maps every 8 days showing many kinds of potential forest disturbances. Forest resource managers can view disturbance maps via a web-based viewer, and alerts are issued when particular forest disturbances are seen. Regression-based decadal trend analysis showing long-term forest thrive and decline areas, and individual-based, brute-force supercomputing to map potential movement corridors and migration routes across landscapes will also be discussed. As significant ecological changes occur with increasing rapidity, such empirical data-mining approaches may be the most efficient means to help land managers find the best, most-actionable policies and decision strategies.

Hargrove, W. W.; Hoffman, F. M.; Kumar, J.; Spruce, J.; Norman, S. P.

2013-12-01

286

The Social Status of Aggressive Students across Contexts: The Role of Classroom Status Hierarchy, Academic Achievement, and Grade  

ERIC Educational Resources Information Center

This study tested the effects of 5 classroom contextual features on the social status (perceived popularity and social preference) that peers accord to aggressive students in late elementary school, including classroom peer status hierarchy (whether within-classroom differences in popularity are large or small), classroom academic level, and grade…

Garandeau, Claire F.; Ahn, Hai-Jeong; Rodkin, Philip C.

2011-01-01

287

Becoming urban science teachers by transforming middle-school classrooms: A study of the Urban Science Education Fellows Program  

NASA Astrophysics Data System (ADS)

The current scenario in American education shows a large achievement and opportunity gap in science between urban children in poverty and more privileged youth. Research has shown that one essential factor that accounts for this gap is the shortage of qualified science teachers in urban schools. Teaching science in a high poverty school presents unique challenges to beginner teachers. Limited resources and support and a significant cultural divide with their students are some of the common problems that cause many novice teachers to quit their jobs or to start enacting what has been described as "the pedagogy of poverty." In this study I looked at the case of the Urban Science Education Fellows Program. This program aimed to prepare preservice teachers (i.e. "fellows") to enact socially just science pedagogies in urban classrooms. I conducted qualitative case studies of three fellows. Fellows worked over one year with science teachers in middle-school classrooms in order to develop transformative action research studies. My analysis focused on how fellows coauthored hybrid spaces within these studies that challenged the typical ways science was taught and learned in their classrooms towards a vision of socially just teaching. By coauthoring these hybrid spaces, fellows developed grounded generativity, i.e. a capacity to create new teaching scenarios rooted in the pragmatic realities of an authentic classroom setting. Grounded generativity included building upon their pedagogical beliefs in order to improvise pedagogies with others, repositioning themselves and their students differently in the classroom and constructing symbols of possibility to guide their practice. I proposed authentic play as the mechanism that enabled fellows to coauthor hybrid spaces. Authentic play involved contexts of moderate risk and of distributed expertise and required fellows to be positioned at the intersection of the margins and the center of the classroom community of practice. In all, this study demonstrates that engaging in classroom reform can support preservice teachers in developing specialized tools to teach science in urban classrooms.

Furman, Melina Gabriela

288

An On-Line Classroom for the Unix Environment.  

ERIC Educational Resources Information Center

This paper describes an electronic classroom (ECR) program that has been developed at Nova University to facilitate online real-time group instruction in graduate degree programs in information and computer science. The first section describes the educational uses of the program, including the simulation of a classroom-type educational setting

Scigliano, John A.; And Others

289

Physical and Psychosocial Environments Associated with Networked Classrooms  

Microsoft Academic Search

This article reports a study of the learning environments in computer networked classrooms. The study is unique in that it involved an evaluation of both the physical and psychosocial classroom environments in these computerised settings through the use of a combination of questionnaires and ergonomic evaluations. The study involved administering a student questionnaire designed to assess aspects of the psychosocial

David B. Zandvliet; Barry J. Fraser

2005-01-01

290

Dialogical Patterns of Interaction in Pre-School Classrooms  

ERIC Educational Resources Information Center

The present study set out to identify and examine dialogic educational interactions in Finnish pre-school classrooms. Video recordings of five observed pre-school classrooms that had shown a high or moderate quality of instructional support in literacy, maths and science studies were transcribed for micro-scale qualitative content analysis. Three…

Rasku-Puttonen, Helena; Lerkkanen, Marja-Kristiina; Poikkeus, Anna-Maija; Siekkinen, Martti

2012-01-01

291

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

292

Physical and Psychosocial Environments Associated with Networked Classrooms  

ERIC Educational Resources Information Center

This article reports a study of the learning environments in computer networked classrooms. The study is unique in that it involved an evaluation of both the physical and psychosocial classroom environments in these computerised settings through the use of a combination of questionnaires and ergonomic evaluations. The study involved administering…

Zandvliet, David B.; Fraser, Barry J.

2005-01-01

293

Learning Environments in Information and Communications Technology Classrooms  

ERIC Educational Resources Information Center

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.…

Zandvliet, David B.; Fraser, Barry J.

2004-01-01

294

Teaching and Learning as Multimedia Authoring: The Classroom 2000 Project  

Microsoft Academic Search

We view college classroom teaching and learning as a multimedia authoring activity. The classroom provides a rich setting in which a number of different forms of communication co-exist, such as speech, writing and projected images. Much of the information in a lec- ture is poorly recorded or lost currently. Our hypoth- esis is that tools to aid in the capture

Gregory D. Abowd; Christopher G. Atkeson; Ami Feinstein; Cindy E. Hmelo; Rob Kooper; Sue Long; Mikiya Tani

1996-01-01

295

Creating Discussions with Classroom Voting in Linear Algebra  

ERIC Educational Resources Information Center

We present a study of classroom voting in linear algebra, in which the instructors posed multiple-choice questions to the class and then allowed a few minutes for consideration and small-group discussion. After each student in the class voted on the correct answer using a classroom response system, a set of clickers, the instructor then guided a…

Cline, Kelly; Zullo, Holly; Duncan, Jonathan; Stewart, Ann; Snipes, Marie

2013-01-01

296

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

297

Shared-Reading Volume in Early Childhood Special Education Classrooms  

ERIC Educational Resources Information Center

This study describes book reading practices occurring in early childhood special education (ECSE) classrooms in comparison to early childhood education (ECE) classrooms. Reading logs submitted by 19 ECSE teachers and 13 ECE teachers over one academic year included all books read in whole class settings; these logs were analyzed to assess the…

Dynia, Jaclyn M.; Justice, Laura M.

2015-01-01

298

Mapping the Classroom  

NSDL National Science Digital Library

In this activity, learners discover the importance of maps and scale as they work together to create a map of the classroom. The printable four-page PDF handout includes: a series of inquiry-based questions to get learners thinking about what they already know about maps and their classroom; and a worksheet with step-by-step directions for creating a scale and determining the size and relative location of objects in the classroom.

History, American M.

2001-01-01

299

Mapping the Classroom  

NSDL National Science Digital Library

In this Biodiversity Counts activity, students learn the importance of maps and scale as they work together to create a map of the classroom. The printable four-page PDF handout includes a series of inquiry-based questions to get students thinking about what they already know about maps and their classroom and a worksheet with step-by-step directions for creating a scale and determining the size and relative location of objects in the classroom.

300

A review of sea-spray aerosol source functions using a large global set of sea salt aerosol concentration measurements  

NASA Astrophysics Data System (ADS)

Sea-spray aerosols (SSA) are an important part of the climate system because of their effects on the global radiative budget - both directly as scatterers and absorbers of solar and terrestrial radiation, and indirectly as cloud condensation nuclei (CCN) influencing cloud formation, lifetime, and precipitation. In terms of their global mass, SSA have the largest uncertainty of all aerosols. In this study we review 21 SSA source functions from the literature, several of which are used in current climate models. In addition, we propose a~new function. Even excluding outliers, the global annual SSA mass produced spans roughly 3-70 Pg yr-1 for the different source functions, for particles with dry diameter Dp < 10 ?m, with relatively little interannual variability for a given function. The FLEXPART Lagrangian particle dispersion model was run in backward mode for a large global set of observed SSA concentrations, comprised of several station networks and ship cruise measurement campaigns. FLEXPART backward calculations produce gridded emission sensitivity fields, which can subsequently be multiplied with gridded SSA production fluxes in order to obtain modeled SSA concentrations. This allowed us to efficiently and simultaneously evaluate all 21 source functions against the measurements. Another advantage of this method is that source-region information on wind speed and sea surface temperatures (SSTs) could be stored and used for improving the SSA source function parameterizations. The best source functions reproduced as much as 70% of the observed SSA concentration variability at several stations, which is comparable with "state of the art" aerosol models. The main driver of SSA production is wind, and we found that the best fit to the observation data could be obtained when the SSA production is proportional to U103.5, where U10 is the source region averaged 10 m wind speed. A strong influence of SST on SSA production, with higher temperatures leading to higher production, could be detected as well, although the underlying physical mechanisms of the SST influence remains unclear. Our new source function with wind speed and temperature dependence gives a global SSA production for particles smaller than Dp < 10 ?m of 9 Pg yr-1, and is the best fit to the observed concentrations.

Grythe, H.; Ström, J.; Krejci, R.; Quinn, P.; Stohl, A.

2014-02-01

301

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

302

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

303

Coming Out of Their Shell: The speech and writing of two young bilinguals in the classroom  

Microsoft Academic Search

This paper examines the speech and writing of two young bilingual children in a classroom context. After summarising the diverse contexts in which such children learn, we present four sets of data: the informants' written texts, following a classroom activity (observing and handling tortoises); partial transcripts of a classroom feedback session in which they address the whole class; of their

Tim Parke; Rose Drury

2000-01-01

304

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

305

Using Representational Tools to Learn about Complex Systems: A Tale of Two Classrooms  

ERIC Educational Resources Information Center

Orchestrating inquiry-based science learning in the classroom is a complex undertaking. It requires fitting the culture of the classroom with the teacher's teaching and inquiry practices. To understand the interactions between these variables in relation to student learning, we conducted an investigation in two different classroom settings to…

Hmelo-Silver, Cindy E.; Liu, Lei; Gray, Steven; Jordan, Rebecca

2015-01-01

306

Measuring Civic Engagement Processes and Youth Civic Empowerment in the Classroom: The CIVVICS Observation Tool  

ERIC Educational Resources Information Center

Grounded in the context of the gap in civic participation, action-based civics curricula, and how classroom interactions may affect student development, we present the CIVVICS (Civic Interactions motiVating diVerse Individuals in Classroom Settings) observation tool. CIVVICS's four domains--Lesson Planning and Implementation, Classroom

Stolte, Laurel Cadwallader; Isenbarger, Molly; Cohen, Alison Klebanoff

2014-01-01

307

Photometric selection of quasars in large astronomical data sets with a fast and accurate machine learning algorithm  

NASA Astrophysics Data System (ADS)

Future astronomical surveys will produce data on ˜108 objects per night. In order to characterize and classify these sources, we will require algorithms that scale linearly with the size of the data, that can be easily parallelized and where the speedup of the parallel algorithm will be linear in the number of processing cores. In this paper, we present such an algorithm and apply it to the question of colour selection of quasars. We use non-parametric Bayesian classification and a binning algorithm implemented with hash tables (BASH tables). We show that this algorithm's run time scales linearly with the number of test set objects and is independent of the number of training set objects. We also show that it has the same classification accuracy as other algorithms. For current data set sizes, it is up to three orders of magnitude faster than commonly used naive kernel-density-estimation techniques and it is estimated to be about eight times faster than the current fastest algorithm using dual kd-trees for kernel density estimation. The BASH table algorithm scales linearly with the size of the test set data only, and so for future larger data sets, it will be even faster compared to other algorithms which all depend on the size of the test set and the size of the training set. Since it uses linear data structures, it is easier to parallelize compared to tree-based algorithms and its speedup is linear in the number of cores unlike tree-based algorithms whose speedup plateaus after a certain number of cores. Moreover, due to the use of hash tables to implement the binning, the memory usage is very small. While our analysis is for the specific problem of selection of quasars, the ideas are general and the BASH table algorithm can be applied to any density-estimation problem involving sparse high-dimensional data sets. Since sparse high-dimensional data sets are a common type of scientific data set, this method has the potential to be useful in a broad range of machine-learning applications in astrophysics.

Gupta, Pramod; Connolly, Andrew J.; Gardner, Jeffrey P.

2014-03-01

308

Pressures of the Season: A Descriptive Look at Classroom Quality in Second and Third Grade Classrooms  

ERIC Educational Resources Information Center

This report presents findings from two years of classroom observation designed to help understand the in-school experiences of students who had been first graders in eight Baltimore public schools in 2007-08. During the 2008-09 and 2009-10 school years, the authors conducted fieldwork to understand learning opportunities and settings for a set of…

Plank, Stephen B.; Condliffe, Barbara

2011-01-01

309

Ideas for the Classroom  

ERIC Educational Resources Information Center

In this article, the author shares some of the activities for the classroom invented by Gill Hatch. One of those activities is the activity for older students, which is for the five-year-olds through to post-graduates. Card-sorting game, geometry games, algebra games, and loop games are also some of those activities for the classroom invented by…

Mathematics Teaching Incorporating Micromath, 2006

2006-01-01

310

Evaluating Psychosocial Classroom Environments.  

ERIC Educational Resources Information Center

A rating scale was designed to measure college classroom climate in Primary Teacher Training Colleges in Spain, as well as to describe and compare college classroom environments. Data were gathered from 33 classes of students training to be public or private primary school teachers at colleges in Sevilla and Huelva. Participant observation and…

Villar Angulo, Luis Miguel

311

Lawyer In The Classroom  

ERIC Educational Resources Information Center

Modern drug education is marked by an increased use of the professional from the community as a guest speaker in the classroom. The use of some basic guidelines may assist the teacher in finding a "classroom lawyer," and in making his presentation more meaningful. (Author)

Ingram, Verner M., Jr.

1974-01-01

312

Creating the Multiage Classroom.  

ERIC Educational Resources Information Center

School restructuring movements have gained a great deal of national attention. This guidebook addresses the multi-age classroom movement, in which a mixed-age group of children stays with a given teacher for a number of years. The work provides a complete design for the mixed-age primary classroom, from philosophy and rationale to sample lesson…

Stone, Sandra J.

313

Understanding Classroom Communication.  

ERIC Educational Resources Information Center

Learning in classrooms occurs through and is embedded in the interpersonal communication between teachers and students and among students. Classroom communication is negotiated by teachers and students as they act and react to each other through their verbal and nonverbal behavior. (CB)

Puro, Pamela; Bloome, David

1987-01-01

314

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

315

Epidemiology in the Classroom  

NSDL National Science Digital Library

This high school classroom exercise from the Center for Chronic Disease Prevention and Health Promotion gives an introduction to epidemiology. Visitors will find background materials (including an introduction to epidemiology and how to investigate and outbreak) and suggestions for classroom use.

316

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

317

Culturally Responsive Classrooms.  

ERIC Educational Resources Information Center

The ethnic and cultural makeup of classrooms is changing rapidly, the percentage of school children of color is increasing, and the percentage of teachers of color is declining. This paper examines the challenge of preparing primarily white, middle-class teachers to create culturally responsive classrooms for all children. Teacher education…

Mosher, Darlean A.; Sia, Archibald P.

318

DEMAND CONTROLLED VENTILATION AND CLASSROOM VENTILATION  

SciTech Connect

This document summarizes a research effort on demand controlled ventilation and classroom ventilation. The research on demand controlled ventilation included field studies and building energy modeling. Major findings included: ? The single-location carbon dioxide sensors widely used for demand controlled ventilation frequently have large errors and will fail to effectively control ventilation rates (VRs).? Multi-location carbon dioxide measurement systems with more expensive sensors connected to multi-location sampling systems may measure carbon dioxide more accurately.? Currently-available optical people counting systems work well much of the time but have large counting errors in some situations. ? In meeting rooms, measurements of carbon dioxide at return-air grilles appear to be a better choice than wall-mounted sensors.? In California, demand controlled ventilation in general office spaces is projected to save significant energy and be cost effective only if typical VRs without demand controlled ventilation are very high relative to VRs in codes. Based on the research, several recommendations were developed for demand controlled ventilation specifications in the California Title 24 Building Energy Efficiency Standards.The research on classroom ventilation collected data over two years on California elementary school classrooms to investigate associations between VRs and student illness absence (IA). Major findings included: ? Median classroom VRs in all studied climate zones were below the California guideline, and 40percent lower in portable than permanent buildings.? Overall, one additional L/s per person of VR was associated with 1.6percent less IA. ? Increasing average VRs in California K-12 classrooms from the current average to the required level is estimated to decrease IA by 3.4percent, increasing State attendance-based funding to school districts by $33M, with $6.2 M in increased energy costs. Further VR increases would provide additional benefits.? Confirming these findings in intervention studies is recommended. ? Energy costs of heating/cooling unoccupied classrooms statewide are modest, but a large portion occurs in relatively few classrooms.

Fisk, William J.; Mendell, Mark J.; Davies, Molly; Eliseeva, Ekaterina; Faulkner, David; Hong, Tienzen; Sullivan, Douglas P.

2014-01-06

319

A model of formative assessment practice in secondary science classrooms using an audience response system  

NASA Astrophysics Data System (ADS)

Formative assessment involves the probing of students' ideas to determine their level of understanding during the instructional sequence. Often conceptualized as a cycle, formative assessment consists of the teacher posing an instructional task to students, collecting data about student understanding, and engaging in follow-up strategies such as clarifying student understanding and adjusting instruction to meet learning needs. Despite having been shown to increase student achievement in a variety of classroom settings, formative assessment remains a relative weak area of teacher practice. Methods that enhance formative assessment strategies may therefore have a positive effect on student achievement. Audience response systems comprise a broad category of technologies that support richer classroom interaction and have the potential to facilitate formative assessment. Results from a large national research study, Classroom Connectivity in Promoting Mathematics and Science Achievement (CCMS), show that students in algebra classrooms where the teacher has implemented a type of audience response system experience significantly higher achievement gains compared to a control group. This suggests a role for audience response systems in promoting rich formative assessment. The importance of incorporating formative assessment strategies into regular classroom practice is widely recognized. However, it remains challenging to identify whether rich formative assessment is occurring during a particular class session. This dissertation uses teacher interviews and classroom observations to develop a fine-grained model of formative assessment in secondary science classrooms employing a type of audience response system. This model can be used by researchers and practitioners to characterize components of formative assessment practice in classrooms. A major component of formative assessment practice is the collection and aggregation of evidence of student learning. This dissertation proposes the use of the assessment episode to characterize extended cycles of teacher-student interactions. Further, the model presented here provides a new methodology to describe the teacher's use of questioning and subsequent classroom discourse to uncover student learning. Additional components of this model of formative assessment focus on the recognition of student learning by the teacher and the resultant changes in instructional practice to enhance student understanding.

Shirley, Melissa L.

320

Mobile Phone Application Development for the Classroom  

NASA Astrophysics Data System (ADS)

With smartphone sales currently surpassing laptop sales, it is hard not to think that these devices will have a place in the classroom. More specifically, with little to no monetary investment, classroom-centric mobile applications have the ability to suit the needs of teachers. Previously, programming such an item was a daunting task to the classroom teacher. But now, through the use of online visual tools, anyone has the ability to generate a mobile application to suit individual classroom needs. The "MY NASA DATA" (MND) project has begun work on such an application. Using online tools that are directed at the non-programmer, the team has developed two usable mobile applications ("apps") that fit right into the science classroom. The two apps generated include a cloud dichotomous key for cloud identification in the field, and an atmospheric science glossary to help with standardized testing key vocabulary and classroom assignments. Through the use of free online tools, teachers and students now have the ability to customize mobile applications to meet their individual needs. As an extension of the mobile applications, the MND team is planning web-based application programming interfaces (API's) that will be generated from data that is currently included in the MND Live Access Server. This will allow teachers and students to choose data sets that they want to include in the mobile application without having to populate the API themselves. Through the use of easy to understand online mobile app tutorials and MND data sets, teachers will have the ability to generate unit-specific mobile applications to further engage and empower students in the science classroom.

Lewis, P.; Oostra, D.; Crecelius, S.; Chambers, L. H.

2012-08-01

321

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

322

August 2005 Maximal Vector--Godfrey, Shipley, & Gryz--VLDB 2005 p. 1 of 12 Maximal Vector Computation in Large Data Sets  

E-print Network

August 2005 Maximal Vector--Godfrey, Shipley, & Gryz--VLDB 2005 p. 1 of 12 Maximal Vector Computation in Large Data Sets Parke Godfrey1 Ryan Shipley2 Jarek Gryz1 1 York University Toronto, ON M3J 1P3, Canada {godfrey, jarek}@cs.yorku.ca 2 The College of William and Mary Williamsburg, VA 23187-8795, USA

Gryz, Jarek

323

Identifying Effective Classroom Practices Using Student Achievement Data  

ERIC Educational Resources Information Center

Research continues to find large differences in student achievement gains across teachers' classrooms. The variability in teacher effectiveness raises the stakes on identifying effective teachers and teaching practices. This paper combines data from classroom observations of teaching practices and measures of teachers' ability to improve student…

Kane, Thomas J.; Taylor, Eric S.; Tyler, John H.; Wooten, Amy L.

2011-01-01

324

Maximum Technology in the Music Classroom: Minimum Requirements  

ERIC Educational Resources Information Center

Music teachers are used to finding creative methods for accomplishing large tasks in spite of overwhelming obstacles, such as an insufficient budget and limited time. Yet, when it comes to incorporating technology into the classroom, many allow these obstacles to get the best of them. Finding ways to use computers in the classroom with limited…

Studer, Kathy

2005-01-01

325

Constructing a Bilingual Professional Identity in a Graduate Classroom  

ERIC Educational Resources Information Center

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…

Achugar, Mariana

2009-01-01

326

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 boards…

Mississippi Materials & Resource Center, Gulfport.

327

Teachers’ practical knowledge about classroom management in multicultural classrooms  

Microsoft Academic Search

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 creating a positive working atmosphere in their multicultural classrooms. Twelve teachers were selected

Jan van Tartwijk; Perry den Brok; Ietje Veldman; Theo Wubbels

2009-01-01

328

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

329

Bully Prevention in the Physical Education Classroom  

ERIC Educational Resources Information Center

Bullying takes on many forms and occurs in all classrooms, and the activities found in physical education often provide fertile ground for these behaviors. For example, dodgeball is often played in physical education settings, even though the American Alliance for Health, Physical Education, Recreation and Dance has clearly stated that dodgeball…

Fuller, Brett; Gulbrandson, Kim; Herman-Ukasick, Beth

2013-01-01

330

Gesture in a Kindergarten Mathematics Classroom  

ERIC Educational Resources Information Center

Recent studies have advocated that mathematical meaning is mediated by gestures. This case study explores the gestures kindergarten children produce when learning spatial concepts in a mathematics classroom setting. Based on a video study of a mathematical lesson in a kindergarten class, we concentrated on the verbal and non-verbal behavior of one…

Elia, Iliada; Evangelou, Kyriacoulla

2014-01-01

331

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

332

Professional Learning outside the Classroom: Expedition Iceland  

ERIC Educational Resources Information Center

A bunch of intrepid teachers spent a week in Iceland in a quest to learn more about the country's challenging landscape, by engaging in a unique and inspiring professional development opportunity to learn about innovative ways to teach science and mathematics outside of a classroom setting. A 2008 Ofsted report highlighted the benefits of learning…

Jordan, Julie; Bull, Sue

2012-01-01

333

Mainstream Literature for Full, Inclusive Secondary Classrooms  

ERIC Educational Resources Information Center

The U.S. Department of Education (2000) reported that approximately 80% of students identified with learning disabilities (LD) received half of their instruction within the general education classroom setting. Therefore, it is important that general education teachers implement teaching strategies and practices that meet the distinct educational…

McFall, Lindsey; Fitzpatrick, Michael

2010-01-01

334

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

335

Classroom of the Future...Now!  

ERIC Educational Resources Information Center

Describes projects at the University of Central Florida to test new training technologies under controlled but realistic settings. Original plans for an "Experimental Prototyping Classroom" are discussed; and current developments in language training research, gaming technology, and virtual environments are described. (EAM)

Orwig, Gary; And Others

1993-01-01

336

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

337

NASA Classroom Bioreactor  

NASA Technical Reports Server (NTRS)

Exploration of space provides a compelling need for cell-based research into the basic mechanisms that underlie the profound changes that occur in terrestrial life that is transitioned to low gravity environments. Toward that end, NASA developed a rotating bioreactor in which cells are cultured while continuously suspended in a cylinder in which the culture medium rotates with the cylinder. The randomization of the gravity vector accomplished by the continuous rotation, in a low shear environment, provides an analog of microgravity. Because cultures grown in bioreactors develop structures and functions that are much closer to those exhibited by native tissue than can be achieved with traditional culture methods, bioreactors have contributed substantially to advancing research in the fields of cancer, diabetes, infectious disease modeling for vaccine production, drug efficacy, and tissue engineering. NASA has developed a Classroom Bioreactor (CB) that is built from parts that are easily obtained and assembled, user-friendly and versatile. It can be easily used in simple school settings to examine the effect cultures of seeds or cells. An educational brief provides assembly instructions and lesson plans that describes activities in science, math and technology that explore free fall, microgravity, orbits, bioreactors, structure-function relationships and the scientific method.

Scully, Robert

2004-01-01

338

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

339

pXRF quantitative analysis of the Otowi Member of the Bandelier Tuff: Generating large, robust data sets to decipher trace element zonation in large silicic magma chambers  

NASA Astrophysics Data System (ADS)

Advances in portable X-Ray fluorescence (pXRF) analytical technology have made it possible for high-quality, quantitative data to be collected in a fraction of the time required by standard, non-portable analytical techniques. Not only do these advances reduce analysis time, but data may also be collected in the field in conjunction with sampling. Rhyolitic pumice, being primarily glass, is an excellent material to be analyzed with this technology. High-quality, quantitative data for elements that are tracers of magmatic differentiation (e.g. Rb, Sr, Y, Nb) can be collected for whole, individual pumices and subsamples of larger pumices in 4 minutes. We have developed a calibration for powdered rhyolite pumice from the Otowi Member of the Bandelier Tuff analyzed with the Bruker Tracer IV pXRF using Bruker software and influence coefficients for pumice, which measures the following 19 oxides and elements: SiO2, TiO2, Al2O3, FeO*, MnO, CaO, K2O, P2O5, Zn, Ga, Rb, Sr, Y, Zr, Nb, Ba, Ce, Pb, and Th. With this calibration for the pXRF and thousands of individual powdered pumice samples, we have generated an unparalleled data set for any single eruptive unit with known trace element zonation. The Bandelier Tuff of the Valles-Toledo Caldera Complex, Jemez Mountains, New Mexico, is divided into three main eruptive events. For this study, we have chosen the 1.61 Ma, 450 km3 Otowi Member as it is primarily unwelded and pumice samples are easily accessible. The eruption began with a plinian phase from a single source located near center of the current caldera and deposited the Guaje Pumice Bed. The initial Unit A of the Guaje is geochemically monotonous, but Units B through E, co-deposited with ignimbrite show very strong chemical zonation in trace elements, progressing upwards through the deposits from highly differentiated compositions (Rb ~350 ppm, Nb ~200 ppm) to less differentiated (Rb ~100 ppm, Nb ~50 ppm). Co-erupted ignimbrites emplaced during column collapse show similar trace element zonation. The eruption culminated in caldera collapse after transitioning from a single central vent to ring fracture vents. Ignimbrites deposited at this time have lithic breccias and chaotic geochemical profiles. The geochemical discrepancy between early and late deposits warrants detailed, high-resolution sampling and analysis in order to fully understand the dynamics behind zonation processes. Samples were collected from locations that circumvent the caldera and prepared and analyzed in the field and the laboratory with the pXRF. Approximately 2,000 pumice samples will complete this unprecedented data set, allowing detailed reconstruction of trace element zonation around all sides of the Valles Caldera. These data are then used to constrain models of magma chamber processes that produce trace element zonation and how it is preserved in the deposits after a catastrophic, caldera-forming eruption.

Van Hoose, A. E.; Wolff, J.; Conrey, R.

2013-12-01

340

Statistical Analysis of a Large Sample Size Pyroshock Test Data Set Including Post Flight Data Assessment. Revision 1  

NASA Technical Reports Server (NTRS)

The Earth Observing System (EOS) Terra spacecraft was launched on an Atlas IIAS launch vehicle on its mission to observe planet Earth in late 1999. Prior to launch, the new design of the spacecraft's pyroshock separation system was characterized by a series of 13 separation ground tests. The analysis methods used to evaluate this unusually large amount of shock data will be discussed in this paper, with particular emphasis on population distributions and finding statistically significant families of data, leading to an overall shock separation interface level. The wealth of ground test data also allowed a derivation of a Mission Assurance level for the flight. All of the flight shock measurements were below the EOS Terra Mission Assurance level thus contributing to the overall success of the EOS Terra mission. The effectiveness of the statistical methodology for characterizing the shock interface level and for developing a flight Mission Assurance level from a large sample size of shock data is demonstrated in this paper.

Hughes, William O.; McNelis, Anne M.

2010-01-01

341

Merger Simulation in the Presence of Large Choice Sets and Consumer Stockpiling: The Case of the Bottled Juice Industry  

Microsoft Academic Search

We simulate the price effects of several hypothetical mergers in the shelf-stable bottled juice industry. In doing so, we\\u000a highlight the effects of consumer stockpiling on demand elasticity estimates and subsequent merger simulations. This task\\u000a is complicated by a large number of choice alternatives within the bottled juice category. To address this challenge we employ\\u000a a demand model based on

Geoffrey M. Pofahl

2009-01-01

342

Sorting a large set of heavily used LiF:Mg,Ti thermoluminescent detectors into repeatable subsets of similar response.  

PubMed

A set of 920 heavily used LiF:Mg,Ti thermoluminescent dosimeters (TLDs) was placed into a polymethyl methacrylate (PMMA) plate attached to a 40×40×15cm(3) PMMA phantom and irradiated to 4.52mGy using a (137)Cs source. This was repeated three times to determine the mean and standard deviation of each TLD?s sensitivity. Reader drift was tracked over time with 10 control dosimeters. Two test sets of 100 TLDs were divided into subsets with sensitivities within ±1% of their subset means. All dosimeters were re-irradiated four times to test the TLDs? response repeatability and determine the sensitivity uniformity within the subsets. Coefficients of variation revealed that, within a given subset, the dosimeters responded within ±2.5% of their subset mean in all calibrations. The coefficient of variation in any of the 200 TLDs? calibrations was below 6% across the four calibrations. The work validates the approach of performing three calibrations to separate heavily used and aged TLDs with overall sensitivity variations of ±25% into subsets that reproducibly respond within ±2.5%. PMID:25464196

Kearfott, Kimberlee J; Newton, Jill P; Rafique, Muhammad

2014-10-30

343

Dissecting the genetic make-up of North-East Sardinia using a large set of haploid and autosomal markers  

PubMed Central

Sardinia has been used for genetic studies because of its historical isolation, genetic homogeneity and increased prevalence of certain rare diseases. Controversy remains concerning the genetic substructure and the extent of genetic homogeneity, which has implications for the design of genome-wide association studies (GWAS). We revisited this issue by examining the genetic make-up of a sample from North-East Sardinia using a dense set of autosomal, Y chromosome and mitochondrial markers to assess the potential of the sample for GWAS and fine mapping studies. We genotyped individuals for 500K single-nucleotide polymorphisms, Y chromosome markers and sequenced the mitochondrial hypervariable (HVI–HVII) regions. We identified major haplogroups and compared these with other populations. We estimated linkage disequilibrium (LD) and haplotype diversity across autosomal markers, and compared these with other populations. Our results show that within Sardinia there is no major population substructure and thus it can be considered a genetically homogenous population. We did not find substantial differences in the extent of LD in Sardinians compared with other populations. However, we showed that at least 9% of genomic regions in Sardinians differed in LD structure, which is helpful for identifying functional variants using fine mapping. We concluded that Sardinia is a powerful setting for genetic studies including GWAS and other mapping approaches. PMID:22378280

Pardo, Luba M; Piras, Giovanna; Asproni, Rosanna; van der Gaag, Kristiaan J; Gabbas, Attilio; Ruiz-Linares, Andres; de Knijff, Peter; Monne, Maria; Rizzu, Patrizia; Heutink, Peter

2012-01-01

344

Approaching the complete basis set limit of CCSD(T) for large systems by the third-order incremental dual-basis set zero-buffer F12 method  

NASA Astrophysics Data System (ADS)

The third-order incremental dual-basis set zero-buffer approach was combined with CCSD(T)-F12x (x = a, b) theory to develop a new approach, i.e., the inc3-db-B0-CCSD(T)-F12 method, which can be applied as a black-box procedure to efficiently obtain the near complete basis set (CBS) limit of the CCSD(T) energies also for large systems. We tested this method for several cases of different chemical nature: four complexes taken from the standard benchmark sets S66 and X40, the energy difference between isomers of water hexamer and the rotation barrier of biphenyl. The results show that our method has an error relative to the best estimation of CBS energy of only 0.2 kcal/mol or less. By parallelization, our method can accomplish the CCSD(T)-F12 calculations of about 60 correlated electrons and 800 basis functions in only several days, which by standard implementation are impossible for ordinary hardware. We conclude that the inc3-db-B0-CCSD(T)-F12a/AVTZ method, which is of CCSD(T)/AV5Z quality, is close to the limit of accuracy that one can achieve for large systems currently.

Zhang, Jun; Dolg, Michael

2014-01-01

345

Classroom Constitutional Conventions.  

ERIC Educational Resources Information Center

This lesson provides a simulation in which upper elementary and middle school students establish classroom routines, participate in decision-making activities, improve their understanding of the Constitutional Convention, and differentiate among the three branches of government. (BSR)

Roach, Carol

1987-01-01

346

Stargazing in Your Classroom  

NSDL National Science Digital Library

When taking students outside to see the stars is not an option, teachers can bring the stars inside the classroom. These instructions for building a portable planetarium also include suggestions for cross-cultural and social studies connections.

Rios, Jos�

2003-05-01

347

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

348

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

349

The Classroom Animal: Mealworms.  

ERIC Educational Resources Information Center

Describes appearance, longevity, and changes in each step of the mealworm life cycle. Guidelines for starting a classroom colony are given with housing and care instructions. Suggested observations, activities, and questions for students are included. (DH)

Kramer, David C., Ed.

1985-01-01

350

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

351

For the Classroom: Scrimshaw.  

ERIC Educational Resources Information Center

Procedures are described for practicing the art of scrimshaw in the classroom. Several materials are suggested for use. These include beef soup bones, old piano keys, nails, sandpaper, and lampblack or charcoal. (SA)

Current, 1979

1979-01-01

352

EPIcenter in the Classroom.  

ERIC Educational Resources Information Center

Details the summer workshop experiences of a participant in the EPIcenter (Earth Processes Information Center for Teachers). Describes the impact of the experience on the professional practices of the classroom teacher. (DDR)

Svoboda, Michele

1998-01-01

353

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

354

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

355

Classroom Instruction: The Influences of Marie Clay  

ERIC Educational Resources Information Center

Marie Clay's body of work has influenced classroom instruction in direct and indirect ways, through large overarching themes in our pedagogical content knowledge as well as specific smart practices. This paper focuses on her the contributions to our thinking about instruction which come from two broad theoretical concepts; emergent literacy…

McNaughton, Stuart

2014-01-01

356

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.

357

Improving Classroom Behavior through a Motivational Intervention.  

ERIC Educational Resources Information Center

A program for improving adolescent classroom behavior through motivational techniques was developed and implemented. The targeted population was 20 junior high school students in a large, low socioeconomic status community in the Midwest. A problem in motivation had been documented through observation, an analysis of academic achievement, and a…

Sanders, Jacqueline

358

Solar Powered Classroom  

ScienceCinema

A group of fourth graders in Durham, North Carolina, are showing America the way to a clean energy future. They are installing solar panels on their classroom roof for a project that goes above and beyond a normal day in school. From researching solar panel installation, to generating funds for the project via Kickstarter, these are students who put their plans into action. Their accomplishments go beyond the classroom and stress the importance of getting people of all ages involved in renewable energy.

none

2013-06-27

359

PhyloMap: an algorithm for visualizing relationships of large sequence data sets and its application to the influenza A virus genome  

PubMed Central

Background Results of phylogenetic analysis are often visualized as phylogenetic trees. Such a tree can typically only include up to a few hundred sequences. When more than a few thousand sequences are to be included, analyzing the phylogenetic relationships among them becomes a challenging task. The recent frequent outbreaks of influenza A viruses have resulted in the rapid accumulation of corresponding genome sequences. Currently, there are more than 7500 influenza A virus genomes in the database. There are no efficient ways of representing this huge data set as a whole, thus preventing a further understanding of the diversity of the influenza A virus genome. Results Here we present a new algorithm, "PhyloMap", which combines ordination, vector quantization, and phylogenetic tree construction to give an elegant representation of a large sequence data set. The use of PhyloMap on influenza A virus genome sequences reveals the phylogenetic relationships of the internal genes that cannot be seen when only a subset of sequences are analyzed. Conclusions The application of PhyloMap to influenza A virus genome data shows that it is a robust algorithm for analyzing large sequence data sets. It utilizes the entire data set, minimizes bias, and provides intuitive visualization. PhyloMap is implemented in JAVA, and the source code is freely available at http://www.biochem.uni-luebeck.de/public/software/phylomap.html PMID:21689434

2011-01-01

360

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

361

Classroom Demonstrations of Polymer Principles Part II. Polymer Formation.  

ERIC Educational Resources Information Center

This is part two in a series on classroom demonstrations of polymer principles. Described is how large molecules can be assembled from subunits (the process of polymerization). Examples chosen include both linear and branched or cross-linked molecules. (RH)

Rodriguez, F.; And Others

1987-01-01

362

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

2013-01-01

363

Neurosharing: large-scale data sets (spike, LFP) recorded from the hippocampal-entorhinal system in behaving rats.  

PubMed

Using silicon-based recording electrodes, we recorded neuronal activity of the dorsal hippocampus and dorsomedial entorhinal cortex from behaving rats. The entorhinal neurons were classified as principal neurons and interneurons based on monosynaptic interactions and wave-shapes. The hippocampal neurons were classified as principal neurons and interneurons based on monosynaptic interactions, wave-shapes and burstiness. The data set contains recordings from 7,736 neurons (6,100 classified as principal neurons, 1,132 as interneurons, and 504 cells that did not clearly fit into either category) obtained during 442 recording sessions from 11 rats (a total of 204.5 hours) while they were engaged in one of eight different behaviours/tasks. Both original and processed data (time stamp of spikes, spike waveforms, result of spike sorting and local field potential) are included, along with metadata of behavioural markers. Community-driven data sharing may offer cross-validation of findings, refinement of interpretations and facilitate discoveries. PMID:25075302

Mizuseki, Kenji; Diba, Kamran; Pastalkova, Eva; Teeters, Jeff; Sirota, Anton; Buzsáki, György

2014-01-01

364

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

365

Automatic baseline recognition for the correction of large sets of spectra using continuous wavelet transform and iterative fitting.  

PubMed

A new algorithm for the automatic recognition of peak and baseline regions in spectra is presented. It is part of a study to devise a baseline correction method that is particularly suitable for the simple and fast treatment of large amounts of data of the same type, such as those coming from high-throughput instruments, images, process monitoring, etc. This algorithm is based on the continuous wavelet transform, and its parameters are automatically determined using the criteria of Shannon entropy and the statistical distribution of noise, requiring virtually no user intervention. It was assessed on simulated spectra with different noise levels and baseline amplitudes, successfully recognizing the baseline points in all cases but for a few extremely weak and noisy signals. It can be combined with various fitting methods for baseline estimation and correction. In this work, it was used together with an iterative polynomial fitting to successfully process a real Raman image of 40,000 pixels in about 2.5 h. PMID:24624486

Bertinetto, Carlo G; Vuorinen, Tapani

2014-01-01

366

Fast selection of miRNA candidates based on large-scale pre-computed MFE sets of randomized sequences  

PubMed Central

Background Small RNAs are important regulators of genome function, yet their prediction in genomes is still a major computational challenge. Statistical analyses of pre-miRNA sequences indicated that their 2D structure tends to have a minimal free energy (MFE) significantly lower than MFE values of equivalently randomized sequences with the same nucleotide composition, in contrast to other classes of non-coding RNA. The computation of many MFEs is, however, too intensive to allow for genome-wide screenings. Results Using a local grid infrastructure, MFE distributions of random sequences were pre-calculated on a large scale. These distributions follow a normal distribution and can be used to determine the MFE distribution for any given sequence composition by interpolation. It allows on-the-fly calculation of the normal distribution for any candidate sequence composition. Conclusion The speedup achieved makes genome-wide screening with this characteristic of a pre-miRNA sequence practical. Although this particular property alone will not be able to distinguish miRNAs from other sequences sufficiently discriminative, the MFE-based P-value should be added to the parameters of choice to be included in the selection of potential miRNA candidates for experimental verification. PMID:24418292

2014-01-01

367

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

368

Exposures to Molds in School Classrooms of Children with Asthma  

PubMed Central

Background Students spend a large portion of their day in classrooms which may be a source of mold exposure. We examined the diversity and concentrations of molds in inner-city schools and described differences between classrooms within the same school. Methods Classroom airborne mold spores, collected over a 2 day period, were measured twice during the school year by direct microscopy. Results There were 180 classroom air samples collected from 12 schools. Mold was present in 100% of classrooms. Classrooms within the same school had differing mold levels and mold diversity scores. The total mold per classroom was 176.6 ± 4.2 spores/m3 (geometric mean ± standard deviation) and ranged from 11.2 to 16,288.5 spores/m3. Mold diversity scores for classroom samples ranged from 1 to 19 (7.7 ± 3.5). The classroom accounted for the majority of variance (62%) in the total mold count, and for the majority of variance (56%) in the mold diversity score versus the school. The species with the highest concentrations and found most commonly included Cladosporium (29.3 ± 4.2 spores/m3), Penicillium/Aspergillus (15.0 ± 5.4 spores/m3), smut spores (12.6 ± 4.0 spores/m3), and basidiospores (6.6 ± 7.1 spores/m3). Conclusions Our study found that the school is a source of mold exposure, but particularly the classroom microenvironment varies in quantity of spores and species among classrooms within the same school. We also verified that visible mold may be a predictor for higher mold spore counts. Further studies are needed to determine the clinical significance of mold exposure relative to asthma morbidity in sensitized and non-sensitized asthmatic children. PMID:24112429

Baxi, Sachin N.; Muilenberg, Michael L.; Rogers, Christine A.; Sheehan, William J.; Gaffin, Jonathan; Permaul, Perdita; Kopel, Lianne S.; Lai, Peggy S.; Lane, Jeffrey P.; Bailey, Ann; Petty, Carter R.; Fu, Chunxia; Gold, Diane R.; Phipatanakul, Wanda

2013-01-01

369

Observed Classroom Quality in First Grade: Associations with Teacher, Classroom, and School Characteristics  

ERIC Educational Resources Information Center

The observation and assessment of quality of teacher--child interactions in elementary school settings are increasingly recognized as important; however, research is still very limited in European countries. In this study, we examined the quality of the interactions between teacher and children in first-grade classrooms in Portugal and the extent…

Cadima, Joana; Peixoto, Carla; Leal, Teresa

2014-01-01

370

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

371

Classroom Teachers and Classroom Research. JALT Applied Materials.  

ERIC Educational Resources Information Center

This collection of papers leads classroom language teachers through the process of developing and completing a classroom research project. Arranged in four sections, they include: "Language Teaching and Research" (David Nunan); "Where Are We Now? Trends, Teachers, and Classroom Research" (Dale T. Griffee); "First Things First: Writing the Research…

Griffee, Dale T., Ed.; Nunan, David, Ed.

372

Increasing on-task behavior in every student in a second-grade classroom during transitions: validating the Color Wheel system.  

PubMed

A single-case (B-C-B-C) experimental design was used to evaluate the effects of the Color Wheel classroom management system (CWS) on on-task (OT) behavior in an intact, general-education, 2nd-grade classroom during transitions. The CWS included three sets of rules, posted cues to indicate the rules students are expected to be following at that time, and transition procedures for altering activities and rules. Class-wide data analysis showed large, immediate, and sustained increases in OT behavior when the CWS was applied, with OT behavior returning to baseline levels when typical classroom management (TCM) procedures were reinstated. Each student's average phase data also showed increases in OT behavior when the CWS was applied and re-applied, and showed reductions when the CWS was withdrawn. Discussion focuses on evaluating the internal, external, and contextual validity of class-wide remediation and prevention procedures. PMID:19083373

Fudge, Daniel L; Skinner, Christopher H; Williams, Jacqueline L; Cowden, Dan; Clark, Janice; Bliss, Stacy L

2008-10-01

373

Setting Structute, Involvement, and Developmental Status as Learner: Elements of the Problem of the Match.  

ERIC Educational Resources Information Center

In order to study the appropriateness of different structured classroom settings for children's learning and development, the Columbia Classroom has constructed IRIS (Involvement Ratings in Settings) and PRIN (the Pupil Role Interview). IRIS, a seven dimensional scale of affectivity by non-verbal indices, has been employed in two classrooms for…

Grannis, Joseph C.; And Others

374

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

375

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

376

Sherlock Holmes in the Classroom.  

ERIC Educational Resources Information Center

Describes a three-day classroom activity combining criminal investigations and scientific skills, especially observation skills. Provides detailed classroom procedures with an illustration of eight basic fingerprint patterns and a classification chart. (YP)

Faia, Jean E.

1988-01-01

377

Mathematics Classrooms, Gender and Affect.  

ERIC Educational Resources Information Center

Describes a study that explores the relationship between classroom factors and students' beliefs about themselves as learners of mathematics. Identifies classroom factors that might influence students' beliefs. Contains 45 references. (DDR)

Forgasz, Helen J.; Leder, Gilah C.

1996-01-01

378

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

379

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

380

Inverting the Linear Algebra Classroom  

ERIC Educational Resources Information Center

The inverted classroom is a course design model in which students' initial contact with new information takes place outside of class meetings, and students spend class time on high-level sense-making activities. The inverted classroom model is so called because it inverts or "flips" the usual classroom design where typically class…

Talbert, Robert

2014-01-01

381

Classroom Design at Binghamton University.  

ERIC Educational Resources Information Center

Describes the work of the Classroom Environment Committee at Binghamton University (New York) that created classroom standards for multimedia technology when renovating classrooms. Discusses data display, network connections, screens, laptop computers, lighting, furniture, design considerations, and the need for communication with faculty. (LRW)

Donahue, Jeffrey B.

2000-01-01

382

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

383

Tools to achieve the analysis of large data-set and handling intensity variations of sources with INTEGRAL/SPI : mapping of the sky and study of large-scale structures  

NASA Astrophysics Data System (ADS)

Nowadays, analysis and reduction of the ever-larger data-sets becomes a crucial issue, especially for long periods of observation combined. The INTEGRAL/SPI X/gamma-ray spectrometer (20 keV-8 MeV) is an instrument for which it is essential to process many exposures at the same time to increase the low signal-to-noise ratio weakest sources and/or low-surface brightness extended emission. Processing several years of data simultaneously (10 years actually) requires to compute not only the solution of a large system of equations (linear or non-linear), but also the associated uncertainties. In this context, traditional methods of data reduction are ineffective and sometimes not possible at all. Thanks to the newly developed tools, processing large data-sets from SPI is now possible both with a reasonable turnaround time and low memory usage. We propose also techniques that help overcome difficulties related to the intensity variation of sources/backgreound between sources between consecutive exposures. They allow the construction of pseudo light-curves of a more rational way. We have developed a specific algorithm which involves the transfer function SPI. Based on these advanced tools, we have developed imaging algorithms. Finally, we show some applications to point-sources studies and to the imaging and morphologies study of the large scale structures of the Galaxy ( 511 kev electron-positron annihilation line, the (26) Al line and the diffuse continuum).

Bouchet, Laurent

384

Bringing Technology into Physics Classrooms  

NASA Astrophysics Data System (ADS)

Through our outreach initiative at Jacksonville State University, we have been supporting a number of school districts in Northeast Alabama to improve the teaching of physics at the high school level. This initiative is part of Project IMPACTSEED (IMproving Physics And Chemistry Teaching in SEcondary Education), a grant funded by the Alabama Commission on Higher Education. This project is motivated by a major pressing local need: A large number of high school physics teachers teach out of field. The main aim of project IMPACTSEED is to help teachers learn and master the various physics topics required by the Alabama Course of Study. Teachers are offered year-round support through a rich variety of program. In this presentation, we want to present ideas on ways of bringing technology to physics classrooms. We have identified a number of ways of bringing technology into physics classrooms, most notably through a series of make-and-take technology workshops that were developed over several years of research. In turn, when the teachers assign these make-an-take projects to their students, the students will be able to see first-hand---by doing, rather than being told---that physics is not a dry, abstract subject. We found this approach to be particularly effective in heightening the students' interest in math and science.

Zettlili, Nouredine

2009-05-01

385

A geometrical correction for the inter- and intra-molecular basis set superposition error in Hartree-Fock and density functional theory calculations for large systems  

NASA Astrophysics Data System (ADS)

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.

Kruse, Holger; Grimme, Stefan

2012-04-01

386

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

387

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

388

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

389

Classroom Assessment Techniques: Concept Mapping  

NSDL National Science Digital Library

This page describes concept maps, 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. A concept map is a diagram of nodes adjoined by directional lines and organized in hierarchical levels that move from general to specific concepts. Concept maps are used to assess how well students see the big picture, and to illustrate students' conceptual knowledge. This site provides an overview of this assessment instrument that includes information about how to use them. This site is also is 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.

Michael Zeilik

390

Assessing the large-scale spatial representativeness of temporal dynamics of soil moisture over the United States using point and global scale data sets  

NASA Astrophysics Data System (ADS)

Several studies highlight the important role of soil moisture in the water and energy cycles. Soil moisture is variable on both temporal and spatial scale, which is characterized by small- and large-scale variability as well as short- and long-term processes within the system. Several soil moisture data sets ranging from the point to the global scales are available and provide a promising tool to investigate the spatio-temporal variability as well as spatial representativeness of soil moisture. In the current study we assess the large-scale spatial representativeness of soil moisture over the United States using point as well as global scale soil moisture data sets. The following three data sets are used: (i) point scale in-situ measurements obtained through the International Soil Moisture Network (ISMN), provide soil moisture measurements at different depths and are defined as reference data set; at the global scale the (ii) remote sensing based Essential Climate Variable soil moisture data set (ECV-SM) from the European Space Agency (ESA), representing surface soil moisture for the period 1978 to 2010, as well as (iii) soil moisture estimates from the land surface model ERA Interim/Land, including soil moisture for four different soil layers over the period 1979 to 2010. Following Orlowsky and Seneviratne (in press) the spatial representativeness at the point scale is determined by defining an area surrounding a station in which other stations exhibit similar temporal dynamics, according to a given cutoff of similarity. Consequently, the areal extent of this area gives the measure of spatial representativeness. This method is similarly applied to the gridded data sets, where the area is then defined by the areal extent of the grid cells that comply with the similarity criteria. The spatial representativeness is calculated for the period April to September for absolute values, as well as for short- and long-term anomalies. We use the top soil layer for all three products, and in addition the root zone soil layer for ERA Interim/Land and the in-situ measurements. First results show that the spatial pattern of ERA Interim/Land representativeness compares better to in-situ for the absolute values of soil moisture while for the anomalies of soil moisture the ECV-SM compares better. Additionally, for the absolute values of soil moisture, ERA Interim/Land compares better to in-situ for areas of large spatial representativeness, while for the anomalies of soil moisture ECV-SM compares better to in-situ for small spatial representativeness. Further investigation will link the identified spatial patterns to, among others, large-scale circulation. References Orlowsky, B. and S.I. Seneviratne (in press), Short Communication: On the spatial representativeness of temporal dynamics at European weather stations, Int. J. of Climatology.

Nicolai-Shaw, Nadine; Hirschi, Martin; Mittelbach, Heidi; Seneviratne, Sonia I.

2014-05-01

391

Children's Perceptions of the Classroom Environment and Social and Academic Performance: A Longitudinal Analysis of the Contribution of the "Responsive Classroom" Approach  

ERIC Educational Resources Information Center

This study examines the contribution of the "Responsive Classroom" (RC) Approach, a set of teaching practices that integrate social and academic learning, to children's perceptions of their classroom, and children's academic and social performance over time. Three questions emerge: (a) What is the concurrent and cumulative relation between…

Brock, Laura L.; Nishida, Tracy K.; Chiong, Cynthia; Grimm, Kevin J.; Rimm-Kaufman, Sara E.

2008-01-01

392

The Electronic Classroom.  

ERIC Educational Resources Information Center

The role of telecommunications in establishing the electronic classroom in distance education is illustrated. Using a computer-based doctoral program and the UNIX operating system as an example, how a personal computer and modem may be combined with a telephone line for instructional delivery is described. A number of issues must be addressed in…

Mizell, Al P.; Centini, Barry M.

393

A Restructured Biology Classroom.  

ERIC Educational Resources Information Center

As his high school restructured to improve student outcomes, a biology teacher altered the instructional environment of his classroom accordingly, emphasizing curriculum, instruction, and assessment. As he acted more like a coach than a dispenser of information, students took more responsibility for learning and improving the quality of their…

McCauley, Kevin J.

1995-01-01

394

Networking the Classroom.  

ERIC Educational Resources Information Center

This issue of "CQ Researcher" examines the theme of computer networking in the classroom and discusses uses past and present. It begins with an essay by Christopher Conte that discusses: "Does computer networking really enhance learning? Are teachers adequately prepared to take advantage of computer networking? Will computer networking promote…

Stencel, Sandra, Ed.; And Others

1995-01-01

395

Cockroaches in the Classroom  

ERIC Educational Resources Information Center

The Madagascar hissing cockroach (MHC) provides an excellent avenue to introduce students to the joys of inquiry-centered learning. MHC's are relatively tame, produce little odor, do not bite, and are easy to handle and breed. Because of these characteristics, they are ideal for classroom activities, science projects, and as pets. They also help…

Wagler, Ron; Moseley, Christine

2005-01-01

396

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

397

Fluency in the Classroom  

ERIC Educational Resources Information Center

This book offers two distinct approaches to oral reading instruction that can easily be incorporated into primary-grade literacy curricula. It enables teachers to go beyond the conventional "round-robin" approach by providing strong instructional support and using challenging texts. Grounded in research and classroom experience, the book explains…

Kuhn, Melanie R., Ed.; Schwanenflugel, Paula J., Ed.

2007-01-01

398

Elementary Classroom Web Sites  

ERIC Educational Resources Information Center

The purpose of this study was to understand how elementary classroom Web sites support children's literacy. From a sociocultural perspective of literacy and a transformative stance toward the integration of literacy and technology, and building on explorations of new literacies, I discuss opportunities provided by the Internet that can support…

Baker, Elizabeth A.

2007-01-01

399

Tips from the Classroom.  

ERIC Educational Resources Information Center

Seven articles on classroom icebreakers are compiled: "Picture Stories and Other Opportunities" (Joy Egbert, Deborah Hanley, Rosemary Delaney); "Hey, What's Your Name" (Janet Leamy); "Surprise!" (Lynne Burgess); "Memory Game" (Sally Winn); "Picturesque" (Margaret Beiter); "The Name Game" (Jeanne-Marie Garcia); "Exercise the Body--And the Mind…

TESOL Journal, 1993

1993-01-01

400

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

401

Assessing Classroom Assessment Techniques  

ERIC Educational Resources Information Center

Classroom assessment techniques (CATs) are teaching strategies that provide formative assessments of student learning. It has been argued that the use of CATs enhances and improves student learning. Although the various types of CATs have been extensively documented and qualitatively studied, there appears to be little quantitative research…

Simpson-Beck, Victoria

2011-01-01

402

Classroom Contexts for Creativity  

ERIC Educational Resources Information Center

Various factors influence the development of creative potential, including everything from individual differences to the kinds of experiences and opportunities that creators experience throughout the lifespan. When it comes to nurturing creativity in the classroom, the learning environment is one of the most important factors--determining, in…

Beghetto, Ronald A.; Kaufman, James C.

2014-01-01

403

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

404

Inquiry in the Classroom  

ERIC Educational Resources Information Center

(Purpose) As schools scramble to restructure in the hope of thwarting failure, administrators often appropriate money for outside experts who counsel on professional development as well as outside magic-pill programs for student achievement. High-stakes testing remains the arbiter. Perhaps the use of the best practice of inquiry, or classroom

Stohl, Christina

2010-01-01

405

The Classroom Equalizer.  

ERIC Educational Resources Information Center

The Multiple Activities Curriculum, developed by the Stanford University Center for Educational Research, broadens the scope of classroom experiences and thinking skills required, so that students weak in the traditional academic skills of reading and language have more chance to participate in class and to feel worthwhile. (Author/SJL)

Rosenholtz, Susan J.

1979-01-01

406

Classroom multiplayer presential games  

Microsoft Academic Search

Given the promising results of massively multiplayer online games (MMOGs) for educational purposes, this paper maps the essential concepts behind MMOGs, into the classroom context. Since the number of students in this context is not massive and play takes place within a single room rather than on the Internet, we have changed the terms ldquomassivelyrdquo and ldquoonlinerdquo to ldquoclassroomrdquo and

Miguel Nussbaum; Heinz Susaeta; Felipe Jimenez; Ignacio Gajardo; Juan José Andreu; M. Villalta; J. Nordlinger

2009-01-01

407

Classroom management and disaffection  

Microsoft Academic Search

This article reports on aspects of the Norwich Area Schools Consortium (NASC) cross-school Classroom Management and Disaffection research project undertaken as part of the NASC programme. It documents the dual interwoven ‘stories’ of teacher engagement in research as a learning expand the substantive research undertaken. The project took place in two stages, the focus of the second stage emerging from

Barbara Zamorski; Terry Haydn

2002-01-01

408

The Intelligent Classroom  

E-print Network

This paper is an adaptation of an article that appeared in the September/October 1999 issue of the IEEE Intelligent Systems journal. It provides an informal description of the Intelligent Classroom and looks at examples of what happens as the speaker writes on the board, lectures from slides, and does an anatomy lecture. Also, the paper features pretty color pictures.

David Franklin; Joshua Flachsbart; Kristian Hammond

1999-01-01

409

Flipping the Classroom Revisited  

NASA Astrophysics Data System (ADS)

I received many emails following the first column on flipping the classroom. Many of my local colleagues also approached me at our physics alliance, Physics Northwest. Teachers are very interested in this new pedagogy. As I result, I wanted to share some more videos to inspire you.

Riendeau, Diane

2013-02-01

410

Language, Schools and Classrooms.  

ERIC Educational Resources Information Center

The use of language in education is examined, and the ways in which recent research helps in the understanding of classroom language are explored. The relevance of such research to practicing teachers as well as to sociologists is also discussed. The volume is divided into nine chapters: (1) "Why Is Language Important in Education?"; (2) "Some…

Stubbs, Michael

411

Classroom Idea-Sparkers  

ERIC Educational Resources Information Center

This article presents four Idea-Sparkers that were submitted by Jason McKinney, a graduate student at Southern Mississippi University and a 1st-grade teacher at Pisgah Elementary in Hattiesburg, Mississippi. First is entitled, "Raceway in the Classroom." This activity can help increase children's fluency and ability to identify numerous sight…

Kieff, Judith

2007-01-01

412

Using Your Classroom Library.  

ERIC Educational Resources Information Center

A series of articles provides suggestions on using classroom libraries. One article suggests filling the library with genre books to inspire critical reading, critical thinking, and learning across the curriculum (folktales, fairy tales, tall tales, historical fiction, biographies, and autobiographies). Another article presents information on…

Barchers, Suzanne; And Others

1993-01-01

413

The Structured Classroom  

ERIC Educational Resources Information Center

The aim of this article is to highlight the organisation of the remedial classroom. The data were collected from observations and semi-structured interviews with 10 teachers in remedial classes for children seen and treated as having concentration deficits. The teachers use primarily compensatory language that places the deficits in the pupils.…

Ljusberg, Anna-Lena

2011-01-01

414

Formation in the Classroom  

ERIC Educational Resources Information Center

What is the relationship between the academic knowledge of the guild and the formation of students in the classroom? This Forum gathers four essays originally presented at a Special Topics Session at the 2009 conference of the American Academy of Religion (Atlanta, Georgia), with a brief introductory essay by Fred Glennon explaining the genesis of…

Glennon, Fred; Jacobsen, Douglas; Jacobsen, Rhonda Hustedt; Thatamanil, John J.; Porterfield, Amanda; Moore, Mary Elizabeth

2011-01-01

415

Librarian in the Classroom.  

ERIC Educational Resources Information Center

As community college learning resource centers deal more with student instruction, librarians are gaining credence as true educators. In an effort to reinforce library usage and understand teaching faculty constraints, some librarians--many of them teaching "drop-outs"--have returned to the classroom. This paper describes the experiences of one…

Sabol, Cathy

416

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

417

The Fight Free Classroom.  

ERIC Educational Resources Information Center

Describes implementation of the Fight Free Classroom intervention (designed to decrease fighting and aggressiveness by helping students take ownership of their behavior) in an urban elementary school that included students with emotional and behavioral disorders (EBD). Overall, aggressive acts among students with and without EBD decreased…

Whedon, Craig K.; Bakken, Jeffrey P.; Fletcher, Reginald

2000-01-01

418

The Network Classroom.  

ERIC Educational Resources Information Center

Discussion of the role of new computer communications technologies in education focuses on modern networking systems, including fiber distributed data interface and Integrated Services Digital Network; strategies for implementing networked-based communication; and public online information resources for the classroom, including Bitnet, Internet,…

Maule, R. William

1993-01-01

419

Theme: The Electronic Classroom.  

ERIC Educational Resources Information Center

Consists of seven articles on the use of electronics in vocational agricultural education. Topics include (1) the Ag Ed Network, (2) computer simulations, (3) video simulation, (4) classroom equipment, (4) online information systems, (5) expert systems, and (6) computer networking in California. (CH)

Herz, Bruce; And Others

1988-01-01

420

In the Classroom.  

ERIC Educational Resources Information Center

Fourteen conference papers on classroom techniques for second language teaching are presented, including: "Cooperative Learning at the Post-Secondary Level in Japan" (Steve McGuire, Patricia Thornton, David Kluge); "Shared Inquiry Fosters Critical Thinking Skills in EFL Students" (Carol Browning, Jerold Halvorsen, Denise Ahlquist); "Story Grammar:…

1997

421

The Classroom Animal.  

ERIC Educational Resources Information Center

Tree frogs are small (2-5 cm) animals which not only interest students but also can be maintained in classrooms for a few days. Characteristics (species, ranges, habitat, reproductive cycle, and locomotion) and housing/care needs are described. Long-term maintenance is not recommended due to the difficulty of providing live food. (DH)

Kramer, David C.

1985-01-01

422

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

423

Examining the large-scale convergence of photosynthesis-weighted tree leaf temperatures through stable oxygen isotope analysis of multiple data sets.  

PubMed

The idea that photosynthesis-weighted tree canopy leaf temperature (T(can?)) can be resolved through analysis of oxygen isotope composition in tree wood cellulose (?(18) O(wc)) has led to the observation of boreal-to-subtropical convergence of T(can?) to c. 20°C. To further assess the validity of the large-scale convergence of T(can?), we used the isotope approach to perform calculation of T(can?) for independent ?(18) O(wc) data sets that have broad coverage of climates. For the boreal-to-subtropical data sets, we found that the deviation of T(can?) from the growing season temperature systemically increases with the decreasing mean annual temperature. Across the whole data sets we calculated a mean T(can?) of 19.48°C and an SD of 2.05°C, while for the tropical data set, the mean T(can?) was 26.40 ± 1.03°C, significantly higher than the boreal-to-subtropical mean. Our study thus offers independent isotopic support for the concept that boreal-to-subtropical trees display conserved T(can?) near 20°C. The isotopic analysis cannot distinguish between the possibility that leaf temperatures are generally elevated above ambient air temperatures in cooler environments and the possibility that leaf temperature equals air temperature, whereas the leaf/air temperature at which photosynthesis occurs has a weighted average of near 20°C in cooler environments. Future work will separate these potential explanations. PMID:21899555

Song, Xin; Barbour, Margaret M; Saurer, Matthias; Helliker, Brent R

2011-12-01

424

Opportunities for Inquiry Science in Montessori Classrooms: Learning from a Culture of Interest, Communication, and Explanation  

NASA Astrophysics Data System (ADS)

Although classroom inquiry is the primary pedagogy of science education, it has often been difficult to implement within conventional classroom cultures. This study turned to the alternatively structured Montessori learning environment to better understand the ways in which it fosters the essential elements of classroom inquiry, as defined by prominent policy documents. Specifically, we examined the opportunities present in Montessori classrooms for students to develop an interest in the natural world, generate explanations in science, and communicate about science. Using ethnographic research methods in four Montessori classrooms at the primary and elementary levels, this research captured a range of scientific learning opportunities. The study found that the Montessori learning environment provided opportunities for students to develop enduring interests in scientific topics and communicate about science in various ways. The data also indicated that explanation was largely teacher-driven in the Montessori classroom culture. This study offers lessons for both conventional and Montessori classrooms and suggests further research that bridges educational contexts.

Rinke, Carol R.; Gimbel, Steven J.; Haskell, Sophie

2013-08-01

425

Treatment outcomes in AIDS-related diffuse large B-cell lymphoma in the setting roll-out of combination antiretroviral therapy in South Africa  

PubMed Central

Background Long term survival for patients with AIDS-related diffuse large B-cell lymphoma (DLBCL) is feasible in settings with available combination antiretroviral therapy (cART). However, given limited oncology resources, outcomes for AIDS-associated DLBCL in South Africa are unknown. Methods We performed a retrospective analysis of survival in patients with newly diagnosed AIDS-related diffuse large B-cell lymphoma (DLBCL) treated at a tertiary teaching hospital in Cape Town, South Africa with CHOP or CHOP-like chemotherapy (January 2004 until Dec 2010). HIV and lymphoma related prognostic factors were evaluated. Results 36 patients evaluated; median age 37.3 years, 52.8% men, and 61.1% black South Africans. Median CD4 count 184 cells/?l (in 27.8% this was < 100 cells/?l), 80% high-risk according to the age-adjusted International Prognostic Index. Concurrent Mycobacterium tuberculosis in 25%. Two-year overall survival (OS) was 40.5% (median OS 10.5 months, 95%CI 6.5 – 31.8). ECOG performance status of 2 or more (25.4% versus 50.0%, p = 0.01) and poor response to cART (18.0% versus 53.9%, p = 0.03) predicted inferior 2-year OS. No difference in 2-year OS was demonstrated in patients co-infected with Mycobacterium tuberculosis (p = 0.87). Conclusions Two-year OS for patients with AIDS-related DLBCL treated with CHOP like regimens and cART is comparable to that seen in the US and Europe. Important factors effecting OS in AIDS-related DLBCL in South Africa include performance status at presentation and response to cART. Patients with co-morbid Mycobacterium tuberculosis or hepatitis B seropositivity appear to tolerate CHOP in our setting. Additional improvements in outcomes are likely possible. PMID:23797692

de Witt, Pieter; Maartens, Deborah J; Uldrick, Thomas S; Sissolak, Gerhard

2013-01-01

426

Integrated QSPR models to predict the soil sorption coefficient for a large diverse set of compounds by using different modeling methods  

NASA Astrophysics Data System (ADS)

The soil sorption coefficient (Koc) is a key physicochemical parameter to assess the environmental risk of organic compounds. To predict soil sorption coefficient in a more effective and economical way, here, quantitative structure-property relationship (QSPR) models were developed based on a large diverse dataset including 964 non-ionic organic compounds. Multiple linear regression (MLR), local lazy regression (LLR) and least squares support vector machine (LS-SVM) were utilized to develop QSPR models based on the four most relevant theoretical molecular descriptors selected by genetic algorithms-variable subset selection (GA-VSS) procedure. The QSPR development strictly followed the OECD principles for QSPR model validation, thus great attentions were paid to internal and external validations, applicability domain and mechanistic interpretation. The obtained results indicate that the LS-SVM model performed better than the MLR and the LLR models. For best LS-SVM model, the correlation coefficients (R2) for the training set was 0.913 and concordance correlation coefficient (CCC) for the prediction set was 0.917. The root-mean square errors (RMSE) were 0.330 and 0.426, respectively. The results of internal and external validations together with applicability domain analysis indicate that the QSPR models proposed in our work are predictive and could provide a useful tool for prediction soil sorption coefficient of new compounds.

Shao, Yonghua; Liu, Jining; Wang, Meixia; Shi, Lili; Yao, Xiaojun; Gramatica, Paola

2014-05-01

427

Building and calibrating a large-extent and high resolution coupled groundwater-land surface model using globally available data-sets  

NASA Astrophysics Data System (ADS)

The current generation of large-scale hydrological models generally lacks a groundwater model component simulating lateral groundwater flow. Large-scale groundwater models are rare due to a lack of hydro-geological data required for their parameterization and a lack of groundwater head data required for their calibration. In this study, we propose an approach to develop a large-extent fully-coupled land surface-groundwater model by using globally available datasets and calibrate it using a combination of discharge observations and remotely-sensed soil moisture data. The underlying objective is to devise a collection of methods that enables one to build and parameterize large-scale groundwater models in data-poor regions. The model used, PCR-GLOBWB-MOD, has a spatial resolution of 1 km x 1 km and operates on a daily basis. It consists of a single-layer MODFLOW groundwater model that is dynamically coupled to the PCR-GLOBWB land surface model. This fully-coupled model accommodates two-way interactions between surface water levels and groundwater head dynamics, as well as between upper soil moisture states and groundwater levels, including a capillary rise mechanism to sustain upper soil storage and thus to fulfill high evaporation demands (during dry conditions). As a test bed, we used the Rhine-Meuse basin, where more than 4000 groundwater head time series have been collected for validation purposes. The model was parameterized using globally available data-sets on surface elevation, drainage direction, land-cover, soil and lithology. Next, the model was calibrated using a brute force approach and massive parallel computing, i.e. by running the coupled groundwater-land surface model for more than 3000 different parameter sets. Here, we varied minimal soil moisture storage and saturated conductivities of the soil layers as well as aquifer transmissivities. Using different regularization strategies and calibration criteria we compared three calibration scenarios: using discharge observations, using time series of remotely sensing soil moisture fields (ERS Soil Water Index from TU Vienna), as well as a combination of both. Note that both sources of information are globally available. Each calibration strategy was subsequently validated using over 4000 groundwater head measurement time series. Comparison of the calibration strategies shows that remotely-sensed soil moisture data can be used for the calibration of upper soil hydraulic conductivities that determine groundwater recharge. However, discharge measurements should be included to calibrate the complete model, specifically to constrain aquifer transmissivities and runoff-infiltration partitioning processes. The combined approach using both remotely-sensed soil moisture data and discharge observations yielded a model that was able to fit both soil moisture as well as discharge reasonably well, as well as predicting the dynamics of groundwater heads with acceptable accuracy. However, absolute levels of groundwater head or are only accurate in regions with shallow groundwater tables. Even though there is room for improvement, our study shows that with the global data-sets that are currently available, large-extent groundwater modeling in data-poor environments is certainly within reach.

Sutanudjaja, E. H.; Van Beek, L. P.; de Jong, S. M.; van Geer, F.; Bierkens, M. F.

2012-12-01

428

Connected Classroom Climate: A Validity Study  

Microsoft Academic Search

Connected classroom climate, which focuses on the role of student–student communication in establishing a positive classroom climate, is a relatively new construct with the potential to enhance the understanding of classroom interaction. Results of this study support both the content and construct validity of Dwyer et al.'s (2004) Connected Classroom Climate Inventory as a measure of connected classroom climate. As

Danette Ifert Johnson

2009-01-01

429

The classroom space project  

NSDL National Science Digital Library

Classroom Space is a national education project funded by PPARC and run by the University of Leicester, in collaboration with the National Space Centre. It aims to revitalize science education at Key Stages 3 and 4 by using exciting examples from Space Science and Astronomy to illustrate key science concepts. The comprehensive classroom resources-which are available to download free of charge from the project website www.classroomspace.org.uk-are all linked to the National Curriculum and are fully self-contained. The materials are developed through partnership between space scientists, teachers and education professionals. The project was launched at the ASE Annual Meeting in January, and this paper summarizes the motivation for the project and its development, as well as looking forward to ideas for an extension to the project for which funding has been confirmed.

Verbickas, Sarah

2005-11-28

430

Everyday Classroom Tools  

NSDL National Science Digital Library

The Everyday Classroom Tools site has developed The Threads of Inquiry, an integrated inquiry-inspiring curriculum framework that brings science and the Internet into the everyday life of the K-6 classroom. Students are involved in 10 hands-on investigations that focus on the changing seasons, shadows, light, night and day, and the sun. Each thread is divided into 3 grade level sections (K-2, 2-4, and 4-6). Each investigation contains the title; purpose (how the thread fits into the curriculum, the National Science Standards that are stressed and vocabulary words); materials needed and time requirements; teacher background information; suggested fiction and nonfiction books and other Web sites; and development issues and inquiring investigation for each of the three grade levels. Assessments for the threads, additional activities and lessons, and journals from teachers who have participated in the investigations are included.

Anderson, Carl; Jones, Christine; Mandel, Eric; Astrophysics, Harvard-Smithsonian C.; Project, Nasa'S L.; Ruiz, Tania

2007-12-12

431

C-SPAN Classroom  

NSDL National Science Digital Library

The C-SPAN in the classroom website is geared toward teachers of political science - or specifically U.S. Government. The site is split into six segments: Principles of Government, the Constitution, Political Participation and each of the three branches of government. Each of these sections features video clips, and questions for class discussion. Free site membership is available, but not required to use the site. Some additional content and services are available with membership.

432

Marine Mammal Classroom Activities  

NSDL National Science Digital Library

This website features teachers' guides developed by Sea World featuring marine mammal educational materials for K-12. 14 different topics covered including sharks, wetlands, whales, birds, and much more. Several feature activities for all grade levels. Each guide includes goals and objectives, information, vocabulary, a bibliography, and classroom activities. Activities strive to integrate science, mathematics, geography, art, and language. Orca guide is also in Spanish.

433

CIESE Online Classroom Projects  

NSDL National Science Digital Library

Teachers of all grades can use these projects to enhance their science curriculum through use of the Internet. Many projects utilize real time data, others draw from primary/historical information sources. In collaborative projects, students from around the world contribute data for comparison. Each project includes a brief description, teacher guide, standards, classroom activities, data source links, even online help. Many projects focus on water, water quality, weather, oceanography topics. Undergraduate science education is also featured.

434

Sustainable Seas Classroom Ideas  

NSDL National Science Digital Library

Multimedia approach promotes ocean exploration and conservation. Underwater expeditions to National Marine Sanctuaries provide case studies and data for lesson plans. Topics include: biological oceanography; ocean regions and habitats; physical ocean process; human links to and impacts on the ocean; applications of oceanography. Virtual expeditions link the classroom experience with the individual National Marine Sanctuaries, research methods and technology, and researchers' experiences. Free, on-line teacher workshops feature top ocean researchers and policy makers.

435

Neuroscientists' classroom visits positively impact student attitudes.  

PubMed

The primary recommendation of the 2010 President's Council of Advisors on Science and Technology report on K-12 education was to inspire more students so that they are motivated to study science. Scientists' visits to classrooms are intended to inspire learners and increase their interest in science, but verifications of this impact are largely qualitative. Our primary goal was to evaluate the impact of a longstanding Brain Awareness classroom visit program focused on increasing learners understanding of their own brains. Educational psychologists have established that neuroscience training sessions can improve academic performance and shift attitudes of students from a fixed mindset to a growth mindset. Our secondary goal was to determine whether short interactive Brain Awareness scientist-in-the-classroom sessions could similarly alter learners' perceptions of their own potential to learn. Teacher and student surveys were administered in 4(th)-6(th) grade classrooms throughout Minnesota either before or after one-hour Brain Awareness sessions that engaged students in activities related to brain function. Teachers rated the Brain Awareness program as very valuable and said that the visits stimulated students' interest in the brain and in science. Student surveys probed general attitudes towards science and their knowledge of neuroscience concepts (particularly the ability of the brain to change). Significant favorable improvements were found on 10 of 18 survey statements. Factor analyses of 4805 responses demonstrated that Brain Awareness presentations increased positive attitudes toward science and improved agreement with statements related to growth mindset. Overall effect sizes were small, consistent with the short length of the presentations. Thus, the impact of Brain Awareness presentations was positive and proportional to the efforts expended, demonstrating that short, scientist-in-the-classroom visits can make a positive contribution to primary school students' attitudes toward science and learning. PMID:24358325

Fitzakerley, Janet L; Michlin, Michael L; Paton, John; Dubinsky, Janet M

2013-01-01

436

An Effective Approach to Developing Function-Based Interventions in Early Childhood Classrooms  

ERIC Educational Resources Information Center

Due to the unique features of early childhood classrooms, teachers routinely modify the social and physical environment to support children with mild to moderate challenges. Yet despite their access to behavioral consultants, school-based prekindergarten programs are more likely to expel young children from their classroom settings compared with…

Wood, Brenna K.; Ferro, Jolenea B.

2014-01-01

437

Teacher-Student Development in Mathematics Classrooms: Interrelated Zones of Free Movement and Promoted Actions  

ERIC Educational Resources Information Center

This paper applies and extends Valsiner's "zone theory" (zones of free movement and promoted actions) through an examination of an intervention to establish inquiry communities in primary mathematics classrooms. Valsiner's zone theory, in a classroom setting, views students' freedom of choice of action and thought as mediated by the teacher. The…

Hussain, Mohammed Abdul; Monaghan, John; Threlfall, John

2013-01-01

438

Effective teaching for students with Asperger's syndrome in the regular classroom  

Microsoft Academic Search

This paper investigates issues surrounding the inclusion of students with Asperger's Syndrome in primary school classrooms by first identifying the unique needs of these students, and secondly, by examining some strategies which can facilitate the inclusion of these students into inclusive school settings. These effective methods take into account physical factors within the classroom, the predictability of instructional routines, and

Johann le Roux; Lorraine Graham; Suzanne Carrington

1998-01-01

439

Enhancing Social Behavior of Children with Autism in an Inclusive Classroom  

ERIC Educational Resources Information Center

Though laws relating to including children on the autism spectrum and general education in public school settings are in place, inclusion of students is still not a widespread practice in all elementary classrooms. This study examines the social needs of children with autism and in an inclusive classroom. Children with autism are often placed in…

Rovira, Alexandra

2014-01-01

440

Conceptualizations of Classroom Community in Higher Education: Insights from Award Winning Professors  

ERIC Educational Resources Information Center

The benefits of students' experiences of community, especially in K-12 settings, are well established in the professional literature; however, the influence of college students' perceptions of classroom community is a relatively new focus in educational research. Even less is known about professors' perceptions of classroom community; particularly…

Kay, Denise; Summers, Jessica J.; Svinicki, Marilla D.

2011-01-01

441

Today's Lesson by... Roosevelt? The Use of Character Portrayal in Classroom Guidance  

ERIC Educational Resources Information Center

This article describes how counselors may use the portrayal of a historical character in the classroom to teach lessons on self-esteem, motivation, and goal setting. Keeping with a creative spirit, a classroom guidance lesson that involves the use of character portrayal can be engaging for students. This involves the counselor assuming the…

Young, David S.

2005-01-01

442

Creating a Positive Classroom Atmosphere: Teachers' Use of Effective Praise and Feedback  

ERIC Educational Resources Information Center

Creating a positive and engaging classroom atmosphere is one of the most powerful tools teachers can use to encourage children's learning and prevent problem behaviors from occurring. Teachers' responses to children's appropriate and problem behavior can help set the tone of the classroom environment. Creating positive interactions between a…

Conroy, Maureen A.; Sutherland, Kevin S.; Snyder, Angela; Al-Hendawi, Maha; Vo, Abigail

2009-01-01

443

Evaluation of the Utility of a Discrete-Trial Functional Analysis in Early Intervention Classrooms  

ERIC Educational Resources Information Center

We evaluated a discrete-trial functional analysis implemented by regular classroom staff in a classroom setting. The results suggest that the discrete-trial functional analysis identified a social function for each participant and may require fewer staff than standard functional analysis procedures.

Kodak, Tiffany; Fisher, Wayne W.; Paden, Amber; Dickes, Nitasha

2013-01-01

444

Achievement Goals in the Classroom: Students' Learning Strategies and Motivation Processes  

Microsoft Academic Search

We studied how specific motivational processes are related to the salience of mastery and performance goals in actual classroom settings. One hundred seventy-six students attending a junior high\\/high school for academically advanced students were randomly selected from one of their classes and responded to a questionnaire on their perceptions of the classroom goal orientation, use of effective learning strategies, task

Carole Ames; Jennifer Archer

1988-01-01

445

Digital Devices in Classroom--Hesitations of Teachers-to-Be  

ERIC Educational Resources Information Center

More and more teachers are facing the decision whether they should allow or promote students the use of technology in the classroom. The decision is difficult as there are apparently both advantages and disadvantages in doing either way. In terms of positive impacts, research revealed that the use of digital devices in the classroom setting was…

Lam, Paul; Tong, Aiden

2012-01-01

446

Using Energy Psychology in Classrooms to Decrease Tension in College Students  

ERIC Educational Resources Information Center

This research explores the impact of student use of energy psychology techniques in the classroom setting. The descriptive design quasi-experimental study also examines how energy psychology techniques used in the classroom are related to age and gender by use of the survey method. Questionnaire packets were administered to seventy-five college…

Wolf, Jillian

2012-01-01

447

Orchestration Signals in the Classroom: Managing the Jigsaw Collaborative Learning Flow  

E-print Network

Orchestration Signals in the Classroom: Managing the Jigsaw Collaborative Learning Flow Davinia of collaborative learning processes in face-to-face physical settings, such as classrooms, requires teachers an Orchestration Signal system, composed of wearable Personal Signal devices and an Orchestration Signal manager

Hernández-Leo, Davinia

448

Work-Plan Heroes: Student Strategies in Lower-Secondary Norwegian Classrooms  

ERIC Educational Resources Information Center

This article explores how individualized teaching methods, such as the use of work plans, create new student strategies in Norwegian lower secondary classrooms. Work plans, which are frequently set up as instructional tools in Norwegian classrooms, outline different types of tasks and requirements that the students are supposed to do during a…

Dalland, Cecilie P.; Klette, Kirsti

2014-01-01

449

Possible Effects of Professional Development on Turkish Teachers' Self-Efficacy and Classroom Practice  

ERIC Educational Resources Information Center

The purpose of this study was to analyze the impact of a professional development (PD) program on teacher self-efficacy and classroom practice. Thirty-eight in-service teachers from a foundation school in Izmir participated in this study. Multiple sets of data for this study came from the Turkish teachers' sense of efficacy scale, classroom

Bumen, Nilay T.

2009-01-01

450

Can You Hear Me Now? Assessing Students' Classroom Communication Preferences via a Telephone Conference Activity  

ERIC Educational Resources Information Center

Telephone conference presentation delivery was compared to face-to-face classroom delivery in an undergraduate business course setting to assess whether concern over presenting in front of the class and/or gender impacted presentation mode preference. After completing a classroom exercise, students (n = 102) were surveyed and asked to compare…

Heilmann, Sharon G.

2012-01-01

451

The Integrated Elementary Classroom: A Developmental Model of Education for the 21st Century.  

ERIC Educational Resources Information Center

Targeting the elementary school-age child, 5 to 12 years old, this book sets forth an integrated approach to developing classroom experiences, supporting a holistic curriculum intended to stimulate learning and social and emotional gains. The integrated approach has at its hub a child-centered classroom where students' individual needs form the…

Charbonneau, Manon P.; Reider, Barbara E.

452

Comparing Web-Based and Classroom-Based Learning: A Quantitative Study.  

ERIC Educational Resources Information Center

Compared the achievement of preservice teachers in two sections of a course on teaching English to speakers of other languages, one taught in a traditional classroom setting and the other offered online. Findings suggest that students in the Web-based section achieved more than their classroom-based counterparts. (Author/LRW)

Thirunarayanan, M. O.; Perez-Prado, Aixa

2002-01-01

453

Developing and Validating a New Classroom Climate Observation Assessment Tool  

PubMed Central

The climate of school classrooms, shaped by a combination of teacher practices and peer processes, is an important determinant for children’s psychosocial functioning and is a primary factor affecting bullying and victimization. Given that there are relatively few theoretically-grounded and validated assessment tools designed to measure the social climate of classrooms, our research team developed an observation tool through participatory action research (PAR). This article details how the assessment tool was designed and preliminarily validated in 18 third-, fourth-, and fifth-grade classrooms in a large urban public school district. The goals of this study are to illustrate the feasibility of a PAR paradigm in measurement development, ascertain the psychometric properties of the assessment tool, and determine associations with different indices of classroom levels of relational and physical aggression. PMID:21643447

Leff, Stephen S.; Thomas, Duane E.; Shapiro, Edward S.; Paskewich, Brooke; Wilson, Kim; Necowitz-Hoffman, Beth; Jawad, Abbas F.

2011-01-01

454

A Classroom of Polymer Factories.  

ERIC Educational Resources Information Center

Provides an activity in which students create small classroom factories and investigate several aspects of production including design, engineering, quality control, waste management, packaging, shipment, and communication. (DDR)

Harris, Mary E.; Van Natta, Sandra

1998-01-01

455

5 Keys to Effective Classroom Management  

NSDL National Science Digital Library

When new teachers walk into their first classroom, they take on many new responsibilities, including establishing and enforcing classroom rules. Five simple guidelines can help new teachers develop an effective classroom management that reflects their teaching style.

Kimberly Kode

456

Editor's Roundtable: Classroom management � la Goldilocks  

NSDL National Science Digital Library

Classroom management is a difficult balancing act. Like Goldilocks, teachers should sample all the classroom management techniques available to them to find the ones that are "just right" for their classroom. Therefore, teachers must quickly establish a c

Liftig, Inez

2009-07-01

457

Neal-Schuman Electronic Classroom Handbook.  

ERIC Educational Resources Information Center

This book discusses planning, designing, and implementing electronic classrooms. Chapters cover: (1) background, including the definition of electronic classrooms, classroom types, and justifications; (2) planning, including planners and the planning process; (3) gathering and analyzing information, including instructional needs assessment,…

Hinchliffe, Lisa Janicke

458

The Development of the Older Persons and Informal Caregivers Survey Minimum DataSet (TOPICS-MDS): A Large-Scale Data Sharing Initiative  

PubMed Central

Introduction In 2008, the Ministry of Health, Welfare and Sport commissioned the National Care for the Elderly Programme. While numerous research projects in older persons’ health care were to be conducted under this national agenda, the Programme further advocated the development of The Older Persons and Informal Caregivers Survey Minimum DataSet (TOPICS-MDS) which would be integrated into all funded research protocols. In this context, we describe TOPICS data sharing initiative (www.topics-mds.eu). Materials and Methods A working group drafted TOPICS-MDS prototype, which was subsequently approved by a multidisciplinary panel. Using instruments validated for older populations, information was collected on demographics, morbidity, quality of life, functional limitations, mental health, social functioning and health service utilisation. For informal caregivers, information was collected on demographics, hours of informal care and quality of life (including subjective care-related burden). Results Between 2010 and 2013, a total of 41 research projects contributed data to TOPICS-MDS, resulting in preliminary data available for 32,310 older persons and 3,940 informal caregivers. The majority of studies sampled were from primary care settings and inclusion criteria differed across studies. Discussion TOPICS-MDS is a public data repository which contains essential data to better understand health challenges experienced by older persons and informal caregivers. Such findings are relevant for countries where increasing health-related expenditure has necessitated the evaluation of contemporary health care delivery. Although open sharing of data can be difficult to achieve in practice, proactively addressing issues of data protection, conflicting data analysis requests and funding limitations during TOPICS-MDS developmental phase has fostered a data sharing culture. To date, TOPICS-MDS has been successfully incorporated into 41 research projects, thus supporting the feasibility of constructing a large (>30,000 observations), standardised dataset pooled from various study protocols with different sampling frameworks. This unique implementation strategy improves efficiency and facilitates individual-level data meta-analysis. PMID:24324716

Lutomski, Jennifer E.; Baars, Maria A. E.; Schalk, Bianca W. M.; Boter, Han; Buurman, Bianca M.; den Elzen, Wendy P. J.; Jansen, Aaltje P. D.; Kempen, Gertrudis I. J. M.; Steunenberg, Bas; Steyerberg, Ewout W.; Olde Rikkert, Marcel G. M.; Melis, René J. F.

2013-01-01

459

Banzhuren and Classrooming: Democracy in the Chinese Classroom  

ERIC Educational Resources Information Center

The issue of education and democracy has become more and more important in China. This paper firstly explains the theory of democracy in Chinese classrooms, and then focuses on the Chinese banzhuren who is responsible for classrooming, an important educational area equal to instruction. We illustrate how Chinese students achieve development…

Li, Jiacheng; Chen, Jing

2013-01-01

460

Comparison of Two Methods for Estimating the Sampling-Related Uncertainty of Satellite Rainfall Averages Based on a Large Radar Data Set  

NASA Technical Reports Server (NTRS)

The uncertainty of rainfall estimated from averages of discrete samples collected by a satellite is assessed using a multi-year radar data set covering a large portion of the United States. The sampling-related uncertainty of rainfall estimates is evaluated for all combinations of 100 km, 200 km, and 500 km space domains, 1 day, 5 day, and 30 day rainfall accumulations, and regular sampling time intervals of 1 h, 3 h, 6 h, 8 h, and 12 h. These extensive analyses are combined to characterize the sampling uncertainty as a function of space and time domain, sampling frequency, and rainfall characteristics by means of a simple scaling law. Moreover, it is shown that both parametric and non-parametric statistical techniques of estimating the sampling uncertainty produce comparable results. Sampling uncertainty estimates, however, do depend on the choice of technique for obtaining them. They can also vary considerably from case to case, reflecting the great variability of natural rainfall, and should therefore be expressed in probabilistic terms. Rainfall calibration errors are shown to affect comparison of results obtained by studies based on data from different climate regions and/or observation platforms.

Lau, William K. M. (Technical Monitor); Bell, Thomas L.; Steiner, Matthias; Zhang, Yu; Wood, Eric F.

2002-01-01

461

Agriculture in the Classroom  

NSDL National Science Digital Library

Agriculture in the Classroom is a grassroots program coordinated by the United States Department of Agriculture (USDA). This site contains state information about agriculture, a kids page with games and information, agriculture science project topics, lesson plans for agriculture and geography, quizzes to test agriculture literacy and links for more information. The goal of this program is to help students gain a greater awareness of the role of agriculture in the economy and society, so that they may become citizens who support wise agricultural policies. The program is carried out in each state, according to state needs and interests, by individuals representing farm organizations, agribusiness, education and government.

462

Geoboards in the Classroom  

NSDL National Science Digital Library

This resource for teachers presents the geoboard as a conceptual tool to help students gain a sense of geometric shape and area. The suggested activities range from an introduction of a concept, to extended student exploration of shapes and area using the geoboard. The teacher is fully supported with a list of materials needed, discussion guides and classroom activities for investigating length and area, and sample pages of dot paper to print. Explanations of the Pythagorean theorem, Pick's area theorem, and area formulas for 2-dimensional shapes are provided. Five lesson plans focus on lines, squares, rectangles, parallelograms, and right triangles. A bibliography is included.

Tom Scavo

2001-10-12

463

Slime: Classroom Demonstration  

NSDL National Science Digital Library

The Materials Education Resource Center has provided this hands on lab activity created by Andrew Nydam and Debbie Goodwin. The activity demonstrates property change due to crosslinking in slime formed from mixing PVA and Borax solution. This lab will teach the students the important concepts of plastic flow vs. elastic flow, hydrogen bonding, and viscosity. This pdf document provides instructions for the instructor, recommendations to ensure the experiment goes smoothly for both students and teacher, and an evaluation packet for the students to complete once the lab is finished. All in all, this is a fun and education tool for any high school or community college science classroom.

Goodwin, Debbie; Nydam, Andrew

2010-08-06

464

Everyday Assessment in the Science Classroom  

NSDL National Science Digital Library

Make ongoing, classroom-based assessment second nature to your students and you. Everyday Assessment in the Science Classroom is a thought-provoking collection of 10 essays on the theories behind the latest assessment techniques. The authors offer in-depth "how to" suggestions on conducting assessments as a matter of routine--especially in light of high-stakes standards-based exams, using assessment to improve instruction, and involving students in the assessment process. The second in NSTA's Science Educators' Essay Collection, Everyday Assessment is designed to build confidence and enhance every teacher's ability to embed assessment into daily class work. The book's insights will help make assessment a dynamic classroom process of fine tuning how and what you teach? drawing students into discussions about learning, establishing criteria, doing self-assessment, and setting goals for what they will learn. And isn't that the point? As the editors write, "Assessment operates to improve student learning, not solely to measure it."

2003-01-01

465

The Technology-Rich Classroom.  

ERIC Educational Resources Information Center

Observes the use of educational technology in four middle-school classes at the Ameritech Electronic University School Classroom located on the campus of Kent State University. Draws implications for the effective use of educational technology (both hardware and software) in the classroom. (PKP)

Tiene, Drew; Luft, Pamela

2002-01-01

466

The Case for Smart Classrooms  

ERIC Educational Resources Information Center

Smart classrooms are just as popular on other community college campuses. Through a combination of PowerPoint presentations, videos, Web pages, and other technologies, faculty can engage students using multimedia to create a richer, more compelling learning experience. This article talks about the use of smart classrooms and the educational…

Wong, Wylie

2008-01-01

467

Bringing Globalization into the Classroom  

ERIC Educational Resources Information Center

Some of the most effective resources for bringing the concept of globalization into the classroom is through the personal and professional experiences of the classroom teacher, the personal experiences of students from diverse cultures, the inclusion of curriculum activities with a global context, and the involvement of guest speakers with global…

Billings, Nancy Carter

2006-01-01

468

Mentoring in the Art Classroom  

ERIC Educational Resources Information Center

Mentoring in classrooms allows teachers the opportunity to be motivational tools in the lives of students while operating as role models. The current research shows that mentoring in the art classroom provides stimulation and the momentum to students who are less motivated with creative assignments. The first part of this study looks at the…

Green, Denise; Mitchell, Timothy; Taylor, Patrick

2011-01-01

469

Working Alliances in College Classrooms  

ERIC Educational Resources Information Center

I explain how professors can establish working alliances with students to cultivate a climate conducive to learning. This process involves (a) attending to the emotional bonds that exist in the college classroom, (b) developing shared educational goals and tasks to promote a common sense of purpose, and (c) addressing classroom conflict to repair…

Meyers, Steven A.

2008-01-01

470

Speech Perception in the Classroom.  

ERIC Educational Resources Information Center

This article discusses how poor room acoustics can make speech inaudible and presents a speech-perception model demonstrating the linkage between adequacy of classroom acoustics and the development of a speech and language systems. It argues both aspects must be considered when evaluating barriers to listening and learning in a classroom.…

Smaldino, Joseph J.; Crandell, Carl C.

1999-01-01

471

Mendel in the Modern Classroom  

ERIC Educational Resources Information Center

Mendel is an icon in the history of genetics and part of our common culture and modern biology instruction. The aim of this paper is to summarize the place of Mendel in the modern biology classroom. In the present article we will identify key issues that make Mendel relevant in the classroom today. First, we recount some of the historical…

Smith, Mike U.; Gericke, Niklas M.

2015-01-01

472

Nurturing Creativity in the Classroom  

ERIC Educational Resources Information Center

"Nurturing Creativity in the Classroom" is a groundbreaking collection of essays by leading scholars, who examine and respond to the tension that many educators face in valuing student creativity but believing that they cannot support it given the curricular constraints of the classroom. Is it possible for teachers to nurture creative development…

Beghetto, Ronald A., Ed.; Kaufman, James C., Ed.

2010-01-01

473

Fight Obesity in the Classroom  

ERIC Educational Resources Information Center

U.S. health experts declared obesity an epidemic over a decade ago. Schools have tried to implement prevention programs for students, but as budgets shrink, educating students about obesity is increasingly falling to classroom instructors, including science teachers. The good news is that obesity-related classroom activities can be engaging, and…

Bratsis, Michael E.

2012-01-01

474

Hazard Maps in the Classroom.  

ERIC Educational Resources Information Center

Emphasizes the use of geophysical hazard maps and illustrates how they can be used in the classroom from kindergarten to college level. Depicts ways that hazard maps of floods, landslides, earthquakes, volcanoes, and multi-hazards can be integrated into classroom instruction. Tells how maps may be obtained. (SLM)

Cross, John A.

1988-01-01

475

The construction of different classroom norms during Peer Instruction: Students perceive differences  

NSDL National Science Digital Library

This paper summarizes variations in instructorsâ implementation practices during Peer Instruction (PI) and shows how these differences in practices shape different norms of classroom interaction. We describe variations in classroom norms along three dimensions of classroom culture that are integral to Peer Instruction, emphasis on: (1) faculty-student collaboration, (2) student-student collaboration, and (3) sense-making vs answer-making. Based on interpretations by an observing researcher, we place three different PI classrooms along a continuum representing a set of possible norms. We then check these interpretations against studentsâ perceptions of these environments from surveys collected at the end of the term. We find significant correspondence between the researchersâ interpretations and studentsâ perceptions of Peer Instruction in these environments. We find that variation in faculty practices can set up what students perceive as discernibly different norms. For interested instructors, concrete classroom practices are described that appear to encourage or discourage these norms.

Turpen, Chandra; Finkelstein, Noah D.

2012-05-21

476

The Decentered Teacher and the Construction of Social Space in the Virtual Classroom  

Microsoft Academic Search

The relative newness of online education to most teachers and students means that the virtual classroom is largely uncharted social space; teachers and students must de- liberately consider how and when they will enter into the virtual classroom and where and how they will locate themselves and each other within it. This study uses the concepts of ''time-space separation'' and

Dorothea Anagnostopoulos; Kevin G. Basmadjian; Raven S. Mccrory

2005-01-01

477

Navigating the Nuances: The Experiences of Lesbian, Gay and Bisexual Students in the Graduate Classroom  

ERIC Educational Resources Information Center

This qualitative study explored how 17 lesbian, gay, and bisexual (LGB) graduate students perceived their experiences in the graduate classroom. The study was conducted at a large graduate level institution in the Eastern United States and focused on the classroom experiences of the students, including what factors influenced their engagement with…

Turkowitz, Alysa Ann

2012-01-01

478

The Role of Assistive Listening Devices in the Classroom. PEPNet Tipsheet  

ERIC Educational Resources Information Center

Many students who use hearing aids effectively in quiet environments have a difficult time following information presented in large college classrooms. In the classroom, the instructor's voice is competing with background noise, room echo, and distance. Therefore, the intelligibility of the instructor's voice is degraded by the poor room acoustics…

Clark, Catherine

2000-01-01

479

It's in the Bag!: Going beyond the Science Classroom with Take-Home Literacy Bags  

ERIC Educational Resources Information Center

Although literacy plays a large role in elementary science classrooms, one thing that offers a challenge for educators is meeting the linguistic needs of English language learners (ELLs) while also meeting their content needs. An additional challenge is ensuring that academic literacy extends beyond the classroom. This article presents ways of…

Martin, Susan Ferguson; Daughenbaugh, Lynda; Shaw, Edward L., Jr.; Burch, Katrina

2013-01-01

480

Linguistic Variation within University Classroom Talk: A Corpus-Based Perspective  

ERIC Educational Resources Information Center

The primary goal of this study is to identify intra-textual linguistic variation in university classroom talk, applying corpus-based techniques to the analysis. First, based on the automatically identified vocabulary patterns in classroom talk a large number of class sessions are segmented into smaller units of analysis. Second, the co-occurring…

Csomay, Eniko

2004-01-01

481

Regulative Discourse in Singapore Primary English Classrooms: Teachers' Choices of Directives  

ERIC Educational Resources Information Center

Classroom research has largely focused on an "instructional discourse" in local classroom contexts where teachers and students interact about subject knowledge. Few studies have been conducted, however, to examine "regulative discourse", which is the precondition for the transmission of subject knowledge. In this article, therefore, we investigate…

Liu, Yongbing; Hong, Huaqing

2009-01-01

482

Adolescents' Motivation in the Context of an Academic Vocabulary Intervention in Urban Middle School Classrooms  

ERIC Educational Resources Information Center

In a large urban district's ELA classrooms, an academic vocabulary intervention designed to improve linguistically diverse 6th-graders' reading and language skills was implemented and evaluated. These classrooms were characterized by high numbers of struggling readers, and linguistic diversity was the norm. As part of the evaluation, this study…

Lesaux, Nonie K.; Harris, Julie Russ; Sloane, Phoebe

2012-01-01

483

Toward the virtual classroom  

SciTech Connect

The Lawrence Livermore National Laboratory (LLNL) encourages its employees to remotely attend classes given by Stanford University, University of California at Davis, and the National Technological University (NTU). To improve the quality of education for LLNL employees, we are cooperating with Stanford University in upgrading the Stanford Instructional Television Network (SITN). A dedicated high-speed communication link (Tl) between Stanford and LLNL will be used for enhanced services such as videoconferencing, real time classnotes distribution, and electronic distribution of homework assignments. The new network will also allow students to take classes from their offices with the ability to ask the professor questions via an automatically dialed telephone call. As part of this upgrade, we have also proposed a new videoconferencing based classroom environment where students taking remote classes would feel as though they are attending the live class. All paperwork would be available in near real time and students may converse normally with, and see, other remote students as though they were all in the same physical location. We call this the Virtual Classroom.'' 1 ref., 6 figs.

Pihlman, M.; Dirks, D.H.

1990-01-03

484

Recognizing Stereotypical Motor Movements in the Laboratory and Classroom: A Case Study  

E-print Network

Individuals with Autism Spectrum Disorders (ASD) frequently engage in stereotyped and repetitive motor from six children with ASD repeatedly observed in both laboratory and classroom settings. Challenges encountered when applying machine learning to this domain, as well as implications

485

When a Classroom Is Not Just a Classroom: Building Digital Playgrounds in the Classroom  

ERIC Educational Resources Information Center

In the context of classroom, it is possible to create a playground with digital technology beneficial for learning in spite of rising enthusiasm in incorporating educational games in classroom. This paper is an essay to describe a learning playground called Digital Learning Playground (DLP). It is essentially an application of digital technology…

Chen, Gwo-Dong; Chuang, Chi-Kuo; Nurkhamid; Liu, Tzu-Chien

2012-01-01

486

Classroom Interventions for Students With Traumatic Brain Injuries  

Microsoft Academic Search

Students who have sustained a traumatic brain injury (TBI) return to the school setting with a range of cognitive, psychosocial, and physical deficits that can significantly affect their academic functioning. Successful educational reintegration for students with TBI requires careful assessment of each child's unique needs and abilities and the selection of classroom interventions designed to meet those needs. In this

Julie M. Bowen

2005-01-01

487

The Influence of Classroom Blogging on Elementary Student Writing  

ERIC Educational Resources Information Center

Blogs in classrooms represent a new approach to teaching writing that is developing and changing daily. Although some scholarly literature explores the use of blogs in educational settings, the blogs are primarily being used at the secondary and college levels. The purpose of this qualitative case study research was to explore how blogging…

McGrail, Ewa; Davis, Anne

2011-01-01

488

Fostering Resiliency in Students: Positive Action Strategies for Classroom Teachers.  

ERIC Educational Resources Information Center

Describes research-supported positive action strategies for teachers that will help foster resiliency in their classrooms and promote the healthy development and social competence of all students. Strategies include brainstorming, creative problem solving, goal setting, critical thinking and reflection, sensitivity to social learning, and…

Bruce, Mary Alice

1995-01-01

489

Teacher-Pupil Interaction in Bilingual Elementary School Classrooms.  

ERIC Educational Resources Information Center

The study was designed to explore further, and possibly extend, a conceptual model of teacher-student classroom interaction used initially in mono-lingual, segregated, public secondary school and college settings. The 4 verbal act modes in the model were called appraisal, prescriptive, informational, and questioning. This observational study…

Johnson, David L.

490

Themes and Images That Transcend Cultural Differences in International Classrooms  

ERIC Educational Resources Information Center

Educators of international students are frequently challenged to cope with a clashing diversity of cultures in a classroom setting. This study examined what sorts of themes and images might resonate across nationalities and cultures, which could then be used as tools to aid an instructional framework for international education. The study employed…

Van Hook, Steven R.

2005-01-01

491

Reduction of Classroom Noise Levels Using Group Contingencies  

ERIC Educational Resources Information Center

The therapeutic workplace is an employment-based abstinence reinforcement intervention for unemployed drug users where trainees receive on-the-job employment skills training in a classroom setting. The study is an extension of prior therapeutic workplace research, which suggested that trainees frequently violated noise standards. Participants…

Ring, Brandon M.; Sigurdsson, Sigurdur O.; Eubanks, Sean L.; Silverman, Kenneth

2014-01-01

492

Reputations in Markets with Asymmetric Information: A Classroom Game  

ERIC Educational Resources Information Center

The authors describe a classroom game used to teach students about the impact of reputations in markets with asymmetric information. The game is an extension of Holt and Sherman's lemons market game and simulates a market under three information conditions. In the full information setting, all participants know both the quality and the price of…

Wolf, James R.; Myerscough, Mark A.

2007-01-01

493

Diversity in Secondary English Classrooms: Conceptions and Enactments  

ERIC Educational Resources Information Center

Diversity is conceptualised in many different ways in terms of race, ethnicity, sexual orientation, language and class. Much has been written about these conceptions of diversity in educational settings and how teacher education programs should prepare pre-service teachers to address diversity in their future classrooms. In this article, however,…

Angus, Ryan; de Oliveira, Luciana C.

2012-01-01

494

Students' Reaction to Classroom Discipline in Australia, Israel, and China  

ERIC Educational Resources Information Center

This study investigates the extent to which students from Australia, Israel, and China report that their teachers' classroom disciplinary behaviour affects their attitudes towards schoolwork and the teacher. They also report how justifiable a teacher's intervention appeared. In all three settings, both punishment and aggression relate…

Lewis, Ramon; Romi, Shlomo; Katz, Yaacov J.; Qui, Xing

2008-01-01

495

Fighting the Rip: Using Digital Texts in Classrooms  

ERIC Educational Resources Information Center

This paper reports on a study investigating the use of digital texts in schools serving low and middle/upper socioeconomic communities. It draws on theoretical notions of rhizomes from the work of Deleuze and Guattari to explain the network of relations that are formed in classrooms, and that form the context for a set of patterns observed when…

Honan, Eileen

2009-01-01

496

Discovering Learning Preferences and Learning Differences in the Classroom.  

ERIC Educational Resources Information Center

Understanding learning differences and how they function in the classroom is important to both students and teachers. The learning preferences described in this handbook are based on the concepts of psychological type developed by Carl Jung. Jung identified three sets of psychological processes, the areas of attitude (orientation), perception, and…

Bargar, June R.; And Others

497

Epistemological Syncretism in a Biology Classroom: A Case Study  

ERIC Educational Resources Information Center

In teaching science, the beliefs of teachers may come into conflict and inhibit the implementation of reformed teaching practice. An experienced biology teacher, Mr. Hobbs, was found to have two different sets of epistemological beliefs while his classroom practice was predominantly teacher-centered. A case study was then performed in order to…

Bennett, William D.; Park, Soonhye

2011-01-01

498

Traditional Ecological Knowledge in the Tribal College Classroom  

ERIC Educational Resources Information Center

The college classroom at a tribal college offers a dynamic perspective on the discussion of traditional ecological knowledge. It provides a unique view because it is one of the very few settings in higher education where the majority of students in the class are American Indian. It is here where traditional ecological knowledge should become…

Van Lopik, William

2012-01-01

499

Achieving Standards in a Fiber Optic Mathematics Classroom.  

ERIC Educational Resources Information Center

In response to standards set by the National Council of Teachers of Mathematics, K-12 teachers were interviewed to investigate issues related to implementing standards in K-12 fiber optic mathematics classes. Issues include: achieving student-centered classrooms; incorporating technology into distance education; and structuring assessment so more…

Zbiek, Rose Mary; Foletta, Gina M.

1995-01-01

500

Exploring Teachers' Value Orientations in Literature and History Secondary Classrooms  

ERIC Educational Resources Information Center

This study explores teachers' observable value orientations in literature and history classrooms, wishing to investigate how teachers infuse their values into instructional settings through their conceptions of the taught subject, the process of making meaning, and their involvement in the process of value communication. Through consideration of…

Frydaki, Evangelia; Mamoura, Maria

2008-01-01