Science.gov

Sample records for activity learners discover

  1. Discovering Me: Music Activities for Special Learners.

    ERIC Educational Resources Information Center

    Thompson, Keith P.; And Others

    The book contains information on musical activities which were field tested in Project PASE (Program in the Arts for Special Education, Pennsylvania) classrooms with a wide range of exceptionalities from preschool age to adolescence. Activities are seen to help children become more aware of their bodies, feelings, and themselves; feel important…

  2. Discovering Columbus: Classroom Activities.

    ERIC Educational Resources Information Center

    Moulden, Rick

    1992-01-01

    Presents learning activities concerning Christopher Columbus and his voyages. Includes lessons requiring students to (1) write a pledge of allegiance to the world; (2) examine the Americas before Columbus; (3) prepare a newscast on Columbus' arrival in the Americas; (4) imagine being a Native American encountering Columbus; and (5) explore what…

  3. Discovering Alaska's Salmon: A Children's Activity Book.

    ERIC Educational Resources Information Center

    Devaney, Laurel

    This children's activity book helps students discover Alaska's salmon. Information is provided about salmon and where they live. The salmon life cycle and food chains are also discussed. Different kinds of salmon such as Chum Salmon, Chinook Salmon, Coho Salmon, Sockeye Salmon, and Pink Salmon are introduced, and various activities on salmon are…

  4. Discovering Community: Activities for Afterschool Programs

    ERIC Educational Resources Information Center

    National Institute on Out-of-School Time, Wellesley College, 2006

    2006-01-01

    The project activities highlighted in this publication were conducted within the framework of school-based afterschool programs operated by community-based organizations. The intention of the Discovering Community initiative, created by The After-School Corporation and MetLife Foundation, is to foster greater collaborations and mutual respect…

  5. Discovering Science through Art-Based Activities

    ERIC Educational Resources Information Center

    Alberts, Rebecca

    2010-01-01

    Art and science are intrinsically linked; the essence of art and science is discovery. Both artists and scientists work in a systematic but creative way--knowledge and understanding are built up through pieces of art or a series of labs. In the classroom, integrating science and visual art can provide students with the latitude to think, discover,…

  6. Biological Activity of Recently Discovered Halogenated Marine Natural Products

    PubMed Central

    Gribble, Gordon W.

    2015-01-01

    This review presents the biological activity—antibacterial, antifungal, anti-parasitic, antiviral, antitumor, antiinflammatory, antioxidant, and enzymatic activity—of halogenated marine natural products discovered in the past five years. Newly discovered examples that do not report biological activity are not included. PMID:26133553

  7. How Online Learners Perceive Preparedness and Learning after Discovering Personal Learning-Style-Preferences

    ERIC Educational Resources Information Center

    Voyles, Shannon

    2013-01-01

    Many students withdraw from online learning because of their low levels of satisfaction and preparedness, and students are often unprepared to adapt their learning habits to meet the demands of online learning. However, the way in which students incorporate knowledge about their own learning styles into their self-concept as learners and their…

  8. A Development of Game-Based Learning Environment to Activate Interaction among Learners

    NASA Astrophysics Data System (ADS)

    Takaoka, Ryo; Shimokawa, Masayuki; Okamoto, Toshio

    Many studies and systems that incorporate elements such as “pleasure” and “fun” in the game to improve a learner's motivation have been developed in the field of learning environments. However, few are the studies of situations where many learners gather at a single computer and participate in a game-based learning environment (GBLE), and where the GBLE designs the learning process by controlling the interactions between learners such as competition, collaboration, and learning by teaching. Therefore, the purpose of this study is to propose a framework of educational control that induces and activates interaction between learners intentionally to create a learning opportunity that is based on the knowledge understanding model of each learner. In this paper, we explain the design philosophy and the framework of our GBLE called “Who becomes the king in the country of mathematics?” from a game viewpoint and describe the method of learning support control in the learning environment. In addition, we report the results of the learning experiment with our GBLE, which we carried out in a junior high school, and include some comments by a principal and a teacher. From the results of the experiment and some comments, we noticed that a game may play a significant role in weakening the learning relationship among students and creating new relationships in the world of the game. Furthermore, we discovered that learning support control of the GBLE has led to activation of the interaction between learners to some extent.

  9. Prediction of Human Activity by Discovering Temporal Sequence Patterns.

    PubMed

    Li, Kang; Fu, Yun

    2014-08-01

    Early prediction of ongoing human activity has become more valuable in a large variety of time-critical applications. To build an effective representation for prediction, human activities can be characterized by a complex temporal composition of constituent simple actions and interacting objects. Different from early detection on short-duration simple actions, we propose a novel framework for long -duration complex activity prediction by discovering three key aspects of activity: Causality, Context-cue, and Predictability. The major contributions of our work include: (1) a general framework is proposed to systematically address the problem of complex activity prediction by mining temporal sequence patterns; (2) probabilistic suffix tree (PST) is introduced to model causal relationships between constituent actions, where both large and small order Markov dependencies between action units are captured; (3) the context-cue, especially interactive objects information, is modeled through sequential pattern mining (SPM), where a series of action and object co-occurrence are encoded as a complex symbolic sequence; (4) we also present a predictive accumulative function (PAF) to depict the predictability of each kind of activity. The effectiveness of our approach is evaluated on two experimental scenarios with two data sets for each: action-only prediction and context-aware prediction. Our method achieves superior performance for predicting global activity classes and local action units. PMID:26353344

  10. Language Learning Activities of Distance EFL Learners in the Turkish Open Education System as the Indicator of Their Learner Autonomy

    ERIC Educational Resources Information Center

    Altunay, Dilek

    2013-01-01

    This study investigates the noncompulsory language learning activities performed by a group of distance EFL learners in the Turkish Open Education System. Performance of these activities has been considered as an indicator of their learner autonomy. The data were collected through an online questionnaire and interviews. The study shows that in…

  11. Interactions between and among Heritage Language Learners and Second Language Learners during Collaborative Writing Activities: How Learners Attend to Language

    ERIC Educational Resources Information Center

    Walls, Laura

    2013-01-01

    This study investigates the dynamics in the Spanish classroom between heritage language learner (HLL) dyads, second language learner (L2L) dyads, and mixed HLL-L2L dyads. Specifically, it examines oral, written and embodied discourse that informs our understanding of how learners attend to language. Analysis for this dissertation examined…

  12. Young Children: Active Learners in a Technological Age.

    ERIC Educational Resources Information Center

    Wright, June L., Ed.; Shade, Daniel D., Ed.

    This book addresses the issues of appropriate use of computers with young children and how children and early childhood educators interact with the computer in early childhood settings. Part 1, "Young Children as Active Learners," contains chapter 1: "Listen to the Children: Observing Young Children's Discoveries with the Microcomputer" (June L.…

  13. Learner-Interface Interaction for Technology-Enhanced Active Learning

    ERIC Educational Resources Information Center

    Sinha, Neelu; Khreisat, Laila; Sharma, Kiron

    2009-01-01

    Neelu Sinha, Laila Khreisat, and Kiron Sharma describe how learner-interface interaction promotes active learning in computer science education. In a pilot study using technology that combines DyKnow software with a hardware platform of pen-enabled HP Tablet notebook computers, Sinha, Khreisat, and Sharma created dynamic learning environments by…

  14. Facebook Activities and the Investment of L2 Learners

    ERIC Educational Resources Information Center

    Shafie, Latisha Asmaak; Yaacob, Aizan; Singh, Paramjit Kaur Karpal

    2016-01-01

    The article discusses the investment of L2 learners in the English language on Facebook that they portrayed through their Facebook activities. It studied four informants consisted of diploma students in a Malaysian university. The study consisted of 14 weeks of online observation and semi-structured interviews. Data were collected from online…

  15. Does Translation Contribute to Learners' Free Active Vocabulary?

    ERIC Educational Resources Information Center

    Asiyaban, Amir R.; Bagheri, Mohammad S.

    2012-01-01

    This research was conducted to find out whether or not using "translation" technique in vocabulary teaching would have any positive effects on the "free active" vocabulary of Iranian learners of English. To carry out the research, eighty-eight intermediate male and female students were chosen. The participants were divided into four "male…

  16. Methods for Evaluating Learner Activities with New Technologies: Guidelines for the Lab@Future Project

    ERIC Educational Resources Information Center

    Mwanza-Simwami, Daisy; Engestrom, Yrjo; Amon, Tomaz

    2009-01-01

    The task of evaluating learner activities with new technologies is becoming increasingly complex because traditional evaluation strategies do not adequately consider the unique and often dynamic characteristics of learners and activities carried out. Learner activities are largely driven by motives and relationships that exist in the context in…

  17. Acquisition of Mathematical Language: Suggestions and Activities for English Language Learners

    ERIC Educational Resources Information Center

    Cirillo, Michelle; Bruna, Katherine Richardson; Herbel-Eisenmann, Beth

    2010-01-01

    In this article, we describe aspects of mathematical language that could be problematic to English-language learners, provide recommendations for teaching English-language learners, and suggest activities intended to foster language development in mathematics. (Contains 1 figure.)

  18. Discovering Activities to Recognize and Track in a Smart Environment

    PubMed Central

    Rashidi, Parisa; Cook, Diane J.; Holder, Lawrence B.; Schmitter-Edgecombe, Maureen

    2011-01-01

    The machine learning and pervasive sensing technologies found in smart homes offer unprecedented opportunities for providing health monitoring and assistance to individuals experiencing difficulties living independently at home. In order to monitor the functional health of smart home residents, we need to design technologies that recognize and track activities that people normally perform as part of their daily routines. Although approaches do exist for recognizing activities, the approaches are applied to activities that have been pre-selected and for which labeled training data is available. In contrast, we introduce an automated approach to activity tracking that identifies frequent activities that naturally occur in an individual’s routine. With this capability we can then track the occurrence of regular activities to monitor functional health and to detect changes in an individual’s patterns and lifestyle. In this paper we describe our activity mining and tracking approach and validate our algorithms on data collected in physical smart environments. PMID:21617742

  19. Learning a Taxonomy of Predefined and Discovered Activity Patterns

    PubMed Central

    Krishnan, Narayanan; Cook, Diane J.; Wemlinger, Zachary

    2013-01-01

    Many intelligent systems that focus on the needs of a human require information about the activities that are being performed by the human. At the core of this capability is activity recognition. Activity recognition techniques have become robust but rarely scale to handle more than a few activities. They also rarely learn from more than one smart home data set because of inherent differences between labeling techniques. In this paper we investigate a data-driven approach to creating an activity taxonomy from sensor data found in disparate smart home datasets. We investigate how the resulting taxonomy can help analyze the relationship between classes of activities. We also analyze how the taxonomy can be used to scale activity recognition to a large number of activity classes and training datasets. We describe our approach and evaluate it on 34 smart home datasets. The results of the evaluation indicate that the hierarchical modeling can reduce training time while maintaining accuracy of the learned model. PMID:25302084

  20. Promoting Physics Among Female Learners in the Western Cape Through Active Engagement (abstract)

    NASA Astrophysics Data System (ADS)

    Arendse, Gillian J.

    2009-04-01

    In 2006 the author organized a one-day intervention aimed at promoting physics among female learners at the University of Stellenbosch. The activities included an interactive lecture demonstration promoting active engagement, a hands-on session, and short presentations by female physicists addressing issues such as balancing family and career, breaking the stereotypes, and launching a successful career in physics. Each learner was expected to evaluate the program. In 2007 the author joined forces with Hip2B2 (Shuttleworth Foundation) to host a competition among grade-10 learners with the theme, ``promoting creativity through interactivity.'' The author was tasked by the Hip2B2-team to assist with a program for female learners planned for August 2008, coinciding with our national celebration of Women's Day. The event targeted 160 learners and took place in Durban, East London, Cape Town, and Johannesburg. The author shares some of the learners' experiences and personal triumphs.

  1. The Child as an Active Learner: Views, Practices, and Barriers in Chinese Early Childhood Education

    ERIC Educational Resources Information Center

    Tang, Fengling

    2006-01-01

    The Chinese view of the child is in the process of changing from the dependent child of traditional Chinese society to the child as an active learner in contemporary China. The view of the child as an active learner forces early childhood practitioners to rethink the features of the child's learning and development, individuality, and needs and…

  2. How Do Distance Learners Use Activities in Self-Instructional Materials?

    ERIC Educational Resources Information Center

    Mishra, Sanjaya; Gaba, Ashok Kumar

    2001-01-01

    Presents results of a study on the use of learning activities in self-instructional materials by distance learners of the Indira Gandhi National Open University (IGNOU). It shows that learners make use of the activities extensively as they have positive perceptions about benefits of Self-Assessment Questions and Terminal Questions given in the…

  3. Innovative Strategies for Empowering Your Students to Become Active, Responsible Learners

    NASA Astrophysics Data System (ADS)

    Hufnagel, B.

    2011-09-01

    The economy continues to sputter along, and the repercussions are now hitting hard at publicly-funded colleges and universities, with enrollment increasing and funding decreasing. Funding agencies are starting to look at retention and completion rates as a way to allocate scarce dollars. Improving these rates is also one way to increase the future stream of tuition; students who can't pass introductory classes like ASTRO101 won't enroll and pay tuition for the next level, and they won't complete their degree. So what can you, a mere professor of astronomy, do? Tired of the "What do you want me to know?" questions? Provide your students with learner-centered structures to help them learn more deeply. Do your students resist active-engagement techniques and hate group work? Share empowerment strategies for helping students become active, responsible learners who can thrive in a learner-centered environment. Do you think that it's wrong for the freshman classes to be over-crowded, yet your sophomore classes don't get enough students or don't even exist? After using the proven curriculum of On Course, college and universities across the country have improved their retention across a wide range of disciplines (http://www.OnCourseWorkshop.com/Data.htm). Experience a sample of the fun and engaging activities developed over two decades to help students (1) accept personal responsibility, (2) discover self motivation, (3) master self-management, (4) use interdependence, (5) gain self-awareness, (6) adopt lifelong learning, (7) develop emotional intelligence, and (8) believe in themselves. Since this is only a one-hour workshop, we will focus on choices one and four: to be successful, students need to see themselves as the primary cause of their outcomes and experiences and to build mutually supportive relationships in our classroom and labs. Outcomes: (1) one ASTRO101 Course-ready activity to help students accept personal responsibility; (2) one ASTRO101 Course

  4. Discovering the Thermodynamics of Simultaneous Equilibria: An Entropy Analysis Activity Involving Consecutive Equilibria

    ERIC Educational Resources Information Center

    Bindel, Thomas H.

    2007-01-01

    An activity is presented in which the thermodynamics of simultaneous, consecutive equilibria are explored. The activity is appropriate for second-year high school or AP chemistry. Students discover that a reactant-favored (entropy-diminishing or endergonic) reaction can be caused to happen if it is coupled with a product-favored reaction of…

  5. Beginning Learners' Development of Interactional Competence: Alignment Activity

    ERIC Educational Resources Information Center

    Tecedor, Marta

    2016-01-01

    This study examined the development of interactional competence (Hall, 1993; He & Young, 1998) by beginning learners of Spanish as indexed by their use of alignment moves. Discourse analysis techniques and quantitative data analysis were used to explore how 52 learners expressed alignment and changes in participation patterns in two sets of…

  6. Training Learners to Use Quizlet Vocabulary Activities on Mobile Phones in Vietnam with Facebook

    ERIC Educational Resources Information Center

    Tran, Phuong

    2016-01-01

    Mobile phone ownership among university students in Vietnam has reached almost 100%, exceeding that of Internet-capable desktop computers. This has made them increasingly popular to allow learners to carry out learning activities outside of the classroom, but some studies have suggested that learners are not always willing to engage in activities…

  7. Investigating Learner Attitudes toward E-Books as Learning Tools: Based on the Activity Theory Approach

    ERIC Educational Resources Information Center

    Liaw, Shu-Sheng; Huang, Hsiu-Mei

    2016-01-01

    This paper investigates the use of e-books as learning tools in terms of learner satisfaction, usefulness, behavioral intention, and learning effectiveness. Based on the activity theory approach, this research develops a research model to understand learner attitudes toward e-books in two physical sizes: 10? and 7?. Results suggest that screen…

  8. Older Adult Learners: A Comparison of Active and Non-Active Learners

    ERIC Educational Resources Information Center

    Sloane-Seale, Atlanta; Kops, Bill

    2007-01-01

    This paper reports on a 2004 follow-up study conducted in partnership with the University of Manitoba Continuing Education Division and local senior's organizations. The partnership was formed in 2002-03 to promote applied research on lifelong learning and older adults, develop new and complement existing educational activities, and explore new…

  9. Learners' Interpersonal Beliefs and Generated Feedback in an Online Role-Playing Peer-Feedback Activity: An Exploratory Study

    ERIC Educational Resources Information Center

    Ching, Yu-Hui; Hsu, Yu-Chang

    2016-01-01

    Peer feedback affords interaction and critical thinking opportunities for learners in online courses. However, various factors prevent learners from taking advantage of these promising benefits. This study explored learners' perceptions of the interpersonal factors in a role-playing peer-feedback activity, and examined the types of peer feedback…

  10. Active Ageing and Universities: Engaging Older Learners. Research Report

    ERIC Educational Resources Information Center

    Phillipson, Chris; Ogg, Jim

    2010-01-01

    This report reviews the engagement of older learners (defined as those aged 50 and over) in education and training with particular reference to their involvement in higher education. The ageing of populations was one of the most important trends in the 20th century and will raise major challenges in this century. Appended are: (1) Selected UK…

  11. Learner-Centered Activities from the DVD-Format "Crouching Tiger, Hidden Dragon."

    ERIC Educational Resources Information Center

    Lin, Li-Yun

    This paper demonstrates how Taiwanese English-as-a-Second-Language (ESL) college teachers and students collaborate and negotiate to design various learner-centered activities based on the Chinese film, "Crouching Tiger, Hidden Dragon." These activities are intended to enhance students' listening and speaking abilities. The paper demonstrates eight…

  12. Discover Earth

    NASA Technical Reports Server (NTRS)

    1997-01-01

    Discover Earth is a NASA-funded project for teachers of grades 5-12 who want to expand their knowledge of the Earth system, and prepare to become master teachers who promote Earth system science in their own schools, counties, and throughout their state. Participants from the following states are invited to apply: Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, and Washington, DC. Teachers selected for the project participate in a two-week summer workshop conducted at the University of Maryland, College Park; develop classroom-ready materials during the workshop for broad dissemination; conduct a minimum of two peer training activities during the coming school year; and participate in other enrichment/education opportunities as available and desired. Discover Earth is a team effort that utilizes expertise from a range of contributors, and balances science content with hands-on classroom applications.

  13. Discover Earth

    NASA Technical Reports Server (NTRS)

    Steele, Colleen

    1996-01-01

    Discover Earth is a NASA-funded project for teachers of grades 5-12 who want to expand their knowledge of the Earth system, and prepare to become master teachers who promote Earth system science in their own schools, counties, and throughout their state. Participants from the following states are invited to apply: Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, and Washington, DC. Teachers selected for the project participate in a two-week summer workshop conducted at the University of Maryland, College Park; develop classroom-ready materials during the workshop for broad dissemination; conduct a minimum of two peer training activities during the coming school year; and participate in other enrichment/education opportunities as available and desired. Discover Earth is a team effort that utilizes expertise from a range of contributors, and balances science content with hands-on classroom applications.

  14. A "Dialogic" Approach to the Design of a Transcultural Communication Classroom Activity for Multilingual Learners

    ERIC Educational Resources Information Center

    Thompson, Celia Helen

    2011-01-01

    When preparing teaching materials about communication between people from different linguistic backgrounds, many factors require consideration; these include theoretical orientation, purpose, context, educational needs, study level, as well as the cultural backgrounds of the teachers and their target learners. The classroom activity described in…

  15. Cross-Language Activation in Children's Speech Production: Evidence from Second Language Learners, Bilinguals, and Trilinguals

    ERIC Educational Resources Information Center

    Poarch, Gregory J.; van Hell, Janet G.

    2012-01-01

    In five experiments, we examined cross-language activation during speech production in various groups of bilinguals and trilinguals who differed in nonnative language proficiency, language learning background, and age. In Experiments 1, 2, 3, and 5, German 5- to 8-year-old second language learners of English, German-English bilinguals,…

  16. Active Learning for Discovery and Innovation in Criminology with Chinese Learners

    ERIC Educational Resources Information Center

    Li, Jessica C. M.; Wu, Joseph

    2015-01-01

    Whereas a great deal of literature based upon the context of Western societies has concluded criminology is an ideal discipline for active learning approach, it remains uncertain if this learning approach is applicable to Chinese learners in the discipline of criminology. This article describes and provides evidence of the benefits of using active…

  17. Flipping the Classroom for English Language Learners to Foster Active Learning

    ERIC Educational Resources Information Center

    Hung, Hsiu-Ting

    2015-01-01

    This paper describes a structured attempt to integrate flip teaching into language classrooms using a WebQuest active learning strategy. The purpose of this study is to examine the possible impacts of flipping the classroom on English language learners' academic performance, learning attitudes, and participation levels. Adopting a…

  18. Investigating the Use of Inquiry & Web-Based Activities with Inclusive Biology Learners

    ERIC Educational Resources Information Center

    Bodzin, Alec M.; Waller, Patricia L.; Edwards, Lana; Darlene Kale, Santoro

    2007-01-01

    A Web-integrated biology program is used to explore how to best assist inclusive high school students to learn biology with inquiry-based activities. Classroom adaptations and instructional strategies teachers may use to assist in promoting biology learning with inclusive learners are discussed.

  19. Synthesizing Technology Adoption and Learners' Approaches towards Active Learning in Higher Education

    ERIC Educational Resources Information Center

    Chan, Kevin; Cheung, George; Wan, Kelvin; Brown, Ian; Luk, Green

    2015-01-01

    In understanding how active and blended learning approaches with learning technologies engagement in undergraduate education, current research models tend to undermine the effect of learners' variations, particularly regarding their styles and approaches to learning, on intention and use of learning technologies. This study contributes to further…

  20. Fashion Design: Designing a Learner-Active, Multi-Level High School Course

    ERIC Educational Resources Information Center

    Nelson, Diane

    2009-01-01

    A high school fashion design teacher has much in common with the ringmaster of a three-ring circus. The challenges of teaching a hands-on course are to facilitate the entire class and to meet the needs of individual students. When teaching family and consumer sciences, the goal is to have a learner-active classroom. Revamping the high school's…

  1. 78 FR 11965 - Agency Information Collection (Learner's Perception (LP) Survey) Activities Under OMB Review

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-20

    ... AFFAIRS Agency Information Collection (Learner's Perception (LP) Survey) Activities Under OMB Review...'s Perception (LP) Survey, VA Form 10-0439. OMB Control Number: 2900-0691. Type of Review: Extension... trainees perception of their clinical experience with VA versus non-VA facilities. VA will use the data...

  2. An Emergent Language Program Framework: Actively Involving Learners in Needs Analysis.

    ERIC Educational Resources Information Center

    Savage, William; Storer, Graeme

    1992-01-01

    Relates the experience of the staff of an aquaculture outreach program in Northeast Thailand in implementing an English for special purposes program. By actively involving learners in both the needs analysis and program design, teachers were able to adapt the program content to the requirements of the students. (15 references) (JL)

  3. Photographs and Committees: Activities That Help Students Discover Permutations and Combinations.

    ERIC Educational Resources Information Center

    Szydlik, Jennifer Earles

    2000-01-01

    Presents problem situations that support students when discovering the multiplication principle, permutations, combinations, Pascal's triangle, and relationships among those objects in a concrete context. (ASK)

  4. Realistic Modeling of SDO/AIA-discovered Coronal Fast MHD Wave Trains in Active Regions

    NASA Astrophysics Data System (ADS)

    Ofman, Leon; Liu, Wei

    2016-05-01

    High-resolution EUV observations by space telescopes have provided plenty of evidence for coronal MHD waves in active regions. In particular, SDO/AIA discovered quasi-periodic, fast-mode propagating MHD wave trains (QFPs), which can propagate at speeds of ~1000 km/s perpendicular to the magnetic field. Such waves can provide information on the energy release of their associated flares and the magnetized plasma structure of the active regions. Before we can use these waves as tools for coronal seismology, 3D MHD modeling is required for disentangling observational ambiguities and improving the diagnostic accuracy. We present new results of observationally contained models of QFPs using our recently upgraded radiative, thermally conductive, visco-resistive 3D MHD code. The waves are excited by time-depended boundary conditions constrained by the spatial (localized) and quasi-periodic temporal evolution of a C-class flare typically associated with QFPs. We investigate the excitation, propagation, and damping of the waves for a range of key model parameters, such as the background temperature, density, magnetic field structure, and the location of the flaring site within the active region. We synthesize EUV intensities in multiple AIA channels and then obtain the model parameters that best reproduce the properties of observed QFPs. We discuss the implications of our model results for the seismological application of QFPs and for understanding the dynamics of their associated flares.

  5. Synergy between Authentic Assessment Activities and Learner Autonomy: How Does This Promote Shared Authenticity in Online Higher Education?

    ERIC Educational Resources Information Center

    Gikandi, Joyce

    2013-01-01

    The purpose of this study was to establish whether and how authentic assessment activities and learner autonomy converged to productively engage both the teacher and learners in shared authenticity. The study employed case study methodology to investigate the phenomena within an online course in ICT designed for continuing professionals in…

  6. Popular Culture, English Out-of-Class Activities, and Learner Autonomy among Highly Proficient Secondary Students in Hong Kong

    ERIC Educational Resources Information Center

    Chan, Hoi Wing

    2016-01-01

    This paper reports on how and why proficient learners of English in Hong Kong participated in popular culture, out-of-class activities, with an emphasis on their development of learner autonomy. Autonomy in language learning is defined as an individual's ability and responsibility to take charge of his or her own learning [1]. Out-of-class…

  7. Fluency-dependent cortical activation associated with speech production and comprehension in second language learners.

    PubMed

    Shimada, K; Hirotani, M; Yokokawa, H; Yoshida, H; Makita, K; Yamazaki-Murase, M; Tanabe, H C; Sadato, N

    2015-08-01

    This functional magnetic resonance imaging (fMRI) study investigated the brain regions underlying language task performance in adult second language (L2) learners. Specifically, we identified brain regions where the level of activation was associated with L2 fluency levels. Thirty Japanese-speaking adults participated in the study. All participants were L2 learners of English and had achieved varying levels of fluency, as determined by a standardized L2 English proficiency test, the Versant English Test (Pearson Education Inc., 2011). When participants performed the oral sentence building task from the production tasks administered, the dorsal part of the left inferior frontal gyrus (dIFG) showed activation patterns that differed depending on the L2 fluency levels: The more fluent the participants were, the more dIFG activation decreased. This decreased activation of the dIFG might reflect the increased automaticity of a syntactic building process. In contrast, when participants performed an oral story comprehension task, the left posterior superior temporal gyrus (pSTG) showed increased activation with higher fluency levels. This suggests that the learners with higher L2 fluency were actively engaged in post-syntactic integration processing supported by the left pSTG. These data imply that L2 fluency predicts neural resource allocation during language comprehension tasks as well as in production tasks. This study sheds light on the neural underpinnings of L2 learning by identifying the brain regions recruited during different language tasks across different modalities (production vs. comprehension). PMID:26026679

  8. Fluency-dependent cortical activation associated with speech production and comprehension in second language learners.

    PubMed

    Shimada, K; Hirotani, M; Yokokawa, H; Yoshida, H; Makita, K; Yamazaki-Murase, M; Tanabe, H C; Sadato, N

    2015-08-01

    This functional magnetic resonance imaging (fMRI) study investigated the brain regions underlying language task performance in adult second language (L2) learners. Specifically, we identified brain regions where the level of activation was associated with L2 fluency levels. Thirty Japanese-speaking adults participated in the study. All participants were L2 learners of English and had achieved varying levels of fluency, as determined by a standardized L2 English proficiency test, the Versant English Test (Pearson Education Inc., 2011). When participants performed the oral sentence building task from the production tasks administered, the dorsal part of the left inferior frontal gyrus (dIFG) showed activation patterns that differed depending on the L2 fluency levels: The more fluent the participants were, the more dIFG activation decreased. This decreased activation of the dIFG might reflect the increased automaticity of a syntactic building process. In contrast, when participants performed an oral story comprehension task, the left posterior superior temporal gyrus (pSTG) showed increased activation with higher fluency levels. This suggests that the learners with higher L2 fluency were actively engaged in post-syntactic integration processing supported by the left pSTG. These data imply that L2 fluency predicts neural resource allocation during language comprehension tasks as well as in production tasks. This study sheds light on the neural underpinnings of L2 learning by identifying the brain regions recruited during different language tasks across different modalities (production vs. comprehension).

  9. A newly discovered active contact binary in the field of NGC 1348

    NASA Astrophysics Data System (ADS)

    Fang, Xiang-Song; Gu, Sheng-Hong; Hui, Ho-Keung; Kwok, Chi-Tai; Yeung, Bill; Leung, Kam-Cheung

    2012-01-01

    We present a CCD photometry study of a newly discovered active eclipsing binary in the field of open cluster NGC 1348 based on the first time-series photometric observation. From the minimum times, we determined an orbital period of P = 0.691363 d. Among our datasets, the BV (RI)c light curves obtained in November 2008 were analyzed using the Wilson-Devinney light curve modeling technique. Because of the uncertainty of the membership of this binary in open cluster NGC 1348, we have analyzed the photometric data in two cases with different primary effective temperatures: Case A (T1 = 7750 K) and Case B (T1 = 5250 K). Our analyses reveal that, for Case A, it is a deep (f > 70%), very low mass ratio (q ⋍ 0.096) binary system, indicating that it is now in the late evolution stage of a contact binary; while for Case B, it is a red system with extraordinarily long orbital period with respect to the period-color relation for normal contact binaries, which suggests that this binary has evolved off the main sequence. The well known O'Connell effect (e.g., ΔB ⋍ 0.03 mag) was found in the dataset obtained in November 2008, which could be due to the existence of starspots on the components, therefore the corresponding spot properties (for Case A: hot spot; for Case B: dark spot) were determined using the Wilson-Devinney code. With the purpose of analyzing the dark spot activity for Case B, we compared the light curves derived in different observing runs, and found that a slight change appeared from November to December, 2008, which indicates the evolution of spot activity on at least one component over a time scale of about one month.

  10. Learning by Doing: Engaging Students through Learner-Centered Activities

    ERIC Educational Resources Information Center

    Smart, Karl L.; Csapo, Nancy

    2007-01-01

    With a shift of focus from teaching to learning in higher education, teachers often look for strategies to involve students actively in the learning process, especially since numerous studies have demonstrated that a student's active involvement in the learning process enhances learning. Active learning has resulted in positive learning outcomes.…

  11. A new tropical active serpentinization end-member discovered in Costa Rica

    NASA Astrophysics Data System (ADS)

    Sanchez-Murillo, R.; Gazel, E.; Boll, J.; Schwarzenbach, E. M.

    2013-12-01

    Serpentinization is a planetary process where ultramafic rocks react with fluids with important consequences on global biogeochemical cycles through formation of H2 and CH4. Exposed sections of upper-mantle rocks on continents, where meteoric water interacts with the ultramafic rocks, provide natural laboratories to study present-day serpentinization. Here, we present geochemical evidence of active serpentinization and methane vents in the Santa Elena Ophiolite (comprising 250 km2 of ultramafic rocks) in Costa Rica. The system is sustained by peridotites with a 50% degree of serpentinization. Two alkaline spring systems were discovered. The alkaline fluids pH ranged from 11.01 to 11.18. Mean hydroxide and carbonate concentrations were 52 mg/L and 38 mg/L. Mean dissolved calcium was 104 mg/L with a maximum of 167 mg/L. These springs are also characterized by low Mg (< 1 mg/L) and K (2.35 mg/L) and relatively high Na (21.4 mg/L) and chloride (27.1 mg/L) concentrations. Average spring temperature was 29.1°C. Active CH4 vents (24.3% volume) coupled with extensive carbonate deposits (magnesite and calcite with isotopic compositions within the range of similar ultramafic hosted systems) also provide strong evidence of active serpentinization. Groundwater and alkaline spring's hydrological connectivity was explored using stable isotope as natural tracers. Isotope composition of the alkaline fluids (d18O = -7.9‰, d2H = -51.4‰) was remarkably similar to the groundwater signature from 10 deep wells (30-70 m) (d18O = -7.6‰; dD = -48.0‰) sampled in local watersheds. These results support the hypothesis that during prolonged dry periods these alkaline springs are fed by deep subsurface storage. Mean electrical conductivity of the alkaline fluids (622 uS/cm) was considerably higher than of surface waters (470 uS/cm); this significant difference may be additional evidence of active serpentinization in the area. Overall, Santa Elena's varying weather conditions between

  12. We are what we do: Examining learner-generated content in the anatomy laboratory through the lens of activity theory.

    PubMed

    Doubleday, Alison F; Wille, Sarah J

    2014-01-01

    Video and photography are often used for delivering content within the anatomical sciences. However, instructors typically produce these resources to provide instructional or procedural information. Although the benefits of learner-generated content have been explored within educational research, virtually no studies have investigated the use of learner-generated video and photograph content within anatomy dissection laboratories. This study outlines an activity involving learner-generated video diaries and learner-generated photograph assignments produced during anatomy laboratory sessions. The learner-generated photographs and videos provided instructors with a means of formative assessment and allowed instructors to identify evidence of collaborative behavior in the laboratory. Student questionnaires (n = 21) and interviews (n = 5), as well as in-class observations, were conducted to examine student perspectives on the laboratory activities. The quantitative and qualitative data were examined using the framework of activity theory to identify contradictions between student expectations of, and engagement with, the activity and the actual experiences of the students. Results indicate that learner-generated photograph and video content can act as a rich source of data on student learning processes and can be used for formative assessment, for observing collaborative behavior, and as a starting point for class discussions. This study stresses the idea that technology choice for activities must align with instructional goals. This research also highlights the utility of activity theory as a framework for assessing classroom and laboratory activities, demonstrating that this approach can guide the development of laboratory activities.

  13. Sharing a Small World: Environmental Activities for Young Learners.

    ERIC Educational Resources Information Center

    Zero Population Growth, Inc., Washington, DC.

    This booklet contains a collection of activities developed for pre-K through second grade students. All of the activities in this teacher's guide use an interdisciplinary approach and explore the human connection with all living things and their environment. Contents include: (1) "Sharing Space and Working Together"; (2) "Sharing Resources and…

  14. Cross-language activation in children's speech production: evidence from second language learners, bilinguals, and trilinguals.

    PubMed

    Poarch, Gregory J; van Hell, Janet G

    2012-03-01

    In five experiments, we examined cross-language activation during speech production in various groups of bilinguals and trilinguals who differed in nonnative language proficiency, language learning background, and age. In Experiments 1, 2, 3, and 5, German 5- to 8-year-old second language learners of English, German-English bilinguals, German-English-Language X trilinguals, and adult German-English bilinguals, respectively, named pictures in German and in English; in Experiment 4, 6- to 8-year-old German monolinguals named pictures in German. In both language conditions, cognate status was manipulated. We found that the bidirectional cognate facilitation effect was significant in all groups except the German monolinguals (Experiment 4) and, critically, the child second language learners (Experiment 1) in whom only native language (L1) German had an effect on second language (L2) English. The findings demonstrate how the integration of languages into a child's system follows a developmental path that, at lower levels of proficiency, allows only limited cross-language activation. The results are interpreted against the backdrop of the developing language systems of the children both for early second language learners and for early bi- and trilinguals. PMID:22138311

  15. The effect of curricular activities on learner autonomy: the perspective of undergraduate mechanical engineering students

    NASA Astrophysics Data System (ADS)

    Duarte, M.; Leite, C.; Mouraz, A.

    2016-01-01

    This study researches how first-year engineering students perceived the influence of curricular activities on their own learning autonomy, measured with an adaptation of the Personal Responsibility Orientation to Self-direction in Learning Scale (PRO-SDLS). Participants were questioned to assess the influence of the teacher's role. The results indicate that learners' characteristics (motivation and self-efficacy) contribute more to learner autonomy (LA) than the teaching-learning transaction (control and initiative), as in the original PRO-SDLS validation. The most autonomous learners presented higher values in all LA components and dimensions, but the differences were greater in motivation and initiative. The participants with higher LA were not as dependent on the teacher, regarding assessment, the completion of classroom tasks and deadlines. Regardless of the degree of autonomy in learning, all participants viewed teachers as the main source of information. Therefore, LA plays an important role in teaching activities planning. Suggestions for adjustments and more flexible learning scenarios are formulated.

  16. Cross-language activation in children's speech production: evidence from second language learners, bilinguals, and trilinguals.

    PubMed

    Poarch, Gregory J; van Hell, Janet G

    2012-03-01

    In five experiments, we examined cross-language activation during speech production in various groups of bilinguals and trilinguals who differed in nonnative language proficiency, language learning background, and age. In Experiments 1, 2, 3, and 5, German 5- to 8-year-old second language learners of English, German-English bilinguals, German-English-Language X trilinguals, and adult German-English bilinguals, respectively, named pictures in German and in English; in Experiment 4, 6- to 8-year-old German monolinguals named pictures in German. In both language conditions, cognate status was manipulated. We found that the bidirectional cognate facilitation effect was significant in all groups except the German monolinguals (Experiment 4) and, critically, the child second language learners (Experiment 1) in whom only native language (L1) German had an effect on second language (L2) English. The findings demonstrate how the integration of languages into a child's system follows a developmental path that, at lower levels of proficiency, allows only limited cross-language activation. The results are interpreted against the backdrop of the developing language systems of the children both for early second language learners and for early bi- and trilinguals.

  17. Open-Ended Activities: Differentiation through Learner Responses.

    ERIC Educational Resources Information Center

    Hertzog, Nancy B.

    Open-ended activities have been advocated in the literature of gifted education as a way to allow students who are identified as gifted to work in their own interest areas, in their own learning styles, and at their own ability levels. They are recommended as a means to differentiate instruction, but little research documents this recommended…

  18. Total Participation Techniques: Making Every Student an Active Learner

    ERIC Educational Resources Information Center

    Himmele, Persida; Himmele, William

    2011-01-01

    Yes, there are easy-to-use and incredibly effective alternatives to the "stand and deliver" approach to teaching that causes so many students to tune out--or even drop out. Here's your opportunity to explore dozens of ways to engage K-12 students in active learning and allow them to demonstrate the depth of their knowledge and understanding. The…

  19. Model Eliciting Activities: Fostering 21st Century Learners

    ERIC Educational Resources Information Center

    Stohlmann, Micah

    2013-01-01

    Real world mathematical modeling activities can develop needed and valuable 21st century skills. The knowledge and skills to become adept at mathematical modeling need to develop over time and students in the elementary grades should have experiences with mathematical modeling. For this to occur elementary teachers need to have positive…

  20. Form-Focused Discovery Activities in English Classes

    ERIC Educational Resources Information Center

    Ogeyik, Muhlise Cosgun

    2011-01-01

    Form-focused discovery activities allow language learners to grasp various aspects of a target language by contributing implicit knowledge by using discovered explicit knowledge. Moreover, such activities can assist learners to perceive and discover the features of their language input. In foreign language teaching environments, they can be used…

  1. Discover Earth

    NASA Technical Reports Server (NTRS)

    Steele, Colleen

    1998-01-01

    Discover Earth is a NASA-sponsored project for teachers of grades 5-12, designed to: (1) enhance understanding of the Earth as an integrated system; (2) enhance the interdisciplinary approach to science instruction; and (3) provide classroom materials that focus on those goals. Discover Earth is conducted by the Institute for Global Environmental Strategies in collaboration with Dr. Eric Barron, Director, Earth System Science Center, The Pennsylvania State University; and Dr. Robert Hudson, Chair, the Department of Meteorology, University of Maryland at College Park. The enclosed materials: (1) represent only part of the Discover Earth materials; (2) were developed by classroom teachers who are participating in the Discover Earth project; (3) utilize an investigative approach and on-line data; and (4) can be effectively adjusted to classrooms with greater/without technology access. The Discover Earth classroom materials focus on the Earth system and key issues of global climate change including topics such as the greenhouse effect, clouds and Earth's radiation balance, surface hydrology and land cover, and volcanoes and climate change. All the materials developed to date are available on line at (http://www.strategies.org) You are encouraged to submit comments and recommendations about these materials to the Discover Earth project manager, contact information is listed below. You are welcome to duplicate all these materials.

  2. A strategy to discover decoy chemokine ligands with an anti-inflammatory activity

    PubMed Central

    Abboud, Dayana; Daubeuf, François; Do, Quoc Tuan; Utard, Valérie; Villa, Pascal; Haiech, Jacques; Bonnet, Dominique; Hibert, Marcel; Bernard, Philippe; Galzi, Jean-Luc; Frossard, Nelly

    2015-01-01

    Excessive signaling by chemokines has been associated with chronic inflammation or cancer, thus attracting substantial attention as promising therapeutic targets. Inspired by chemokine-clearing molecules shaped by pathogens to escape the immune system, we designed a generic screening assay to discover chemokine neutralizing molecules (neutraligands) and unambiguously distinguish them from molecules that block the receptor (receptor antagonists). This assay, called TRIC-r, combines time-resolved intracellular calcium recordings with pre-incubation of bioactive compounds either with the chemokine or the receptor-expressing cells. We describe here the identification of high affinity neutraligands of CCL17 and CCL22, two chemokines involved in the Th2-type of lung inflammation. The decoy molecules inhibit in vitro CCL17- or CCL22-induced intracellular calcium responses, CCR4 endocytosis and human T cell migration. In vivo, they inhibit inflammation in a murine model of asthma, in particular the recruitment of eosinophils, dendritic cells and CD4+T cells. Altogether, we developed a successful strategy to discover as new class of pharmacological tools to potently control cell chemotaxis in vitro and in vivo. PMID:26442456

  3. Discovering Deserts.

    ERIC Educational Resources Information Center

    Braus, Judy, Ed.

    1985-01-01

    Ranger Rick's NatureScope is a creative education series dedicated to inspiring in children an understanding and appreciation of the natural world while developing the skills they will need to make responsible decisions about the environment. The topic of this issue is "Discovering Deserts." Contents are organized into the following sections: (1)…

  4. Pharmacophore-Based Virtual Screening to Discover New Active Compounds for Human Choline Kinase α1.

    PubMed

    Serrán-Aguilera, Lucía; Nuti, Roberto; López-Cara, Luisa C; Mezo, Miguel Á Gallo; Macchiarulo, Antonio; Entrena, Antonio; Hurtado-Guerrero, Ramón

    2015-06-01

    Choline kinase (CK) catalyses the transfer of the ATP γ-phosphate to choline to generate phosphocholine and ADP in the presence of magnesium leading to the synthesis of phosphatidylcholine. Of the three isoforms of CK described in humans, only the α isoforms (HsCKα) are strongly associated with cancer and have been validated as drug targets to treat this disease. Over the years, a large number of Hemicholinium-3 (HC-3)-based HsCKα biscationic inhibitors have been developed though the relevant common features important for the biological function have not been defined. Here, selecting a large number of previous HC-3-based inhibitors, we discover through computational studies a pharmacophore model formed by five moieties that are included in the 1-benzyl-4-(N-methylaniline)pyridinium fragment. Using a pharmacophore-guided virtual screening, we then identified 6 molecules that showed binding affinities in the low μM range to HsCKα1. Finally, protein crystallization studies suggested that one of these molecules is bound to the choline and ATP-binding sites. In conclusion, we have developed a pharmacophore model that not only allowed us to dissect the structural important features of the previous HC-3 derivatives, but also enabled the identification of novel chemical tools with good ligand efficiencies to investigate the biological functions of HsCKα1. PMID:27490389

  5. Discovering Geography: Teacher Created Activities for High School and Middle School.

    ERIC Educational Resources Information Center

    Petersen, James F., Ed.

    This guide contains 20 classroom activities designed by teachers to study topics in geography with the eventual goal of aiding in the development of geographic literacy in students. The various activities involve map reading skills, climatology, current events, urban development, and community planning. Each activity presentation includes an event…

  6. Totally Tree-mendous Activities: Projects To Discover the Beauty and Benefits of Trees.

    ERIC Educational Resources Information Center

    Hollister, Sarah

    This teacher's guide supplies information and hands-on activities to teach about trees from several disciplines. Activities are grouped into six areas that cover botany, social studies, arts and literature (aesthetics), and trees as a resource. Sections include: (1) Tree Identification, which defines trees and leaves and presents activities that…

  7. Small-Molecule Activators of Insulin-Degrading Enzyme Discovered through High-Throughput Compound Screening

    PubMed Central

    Cabrol, Christelle; Huzarska, Malwina A.; Dinolfo, Christopher; Rodriguez, Maria C.; Reinstatler, Lael; Ni, Jake; Yeh, Li-An; Cuny, Gregory D.; Stein, Ross L.; Selkoe, Dennis J.; Leissring, Malcolm A.

    2009-01-01

    Background Hypocatabolism of the amyloid β-protein (Aβ) by insulin-degrading enzyme (IDE) is implicated in the pathogenesis of Alzheimer disease (AD), making pharmacological activation of IDE an attractive therapeutic strategy. However, it has not been established whether the proteolytic activity of IDE can be enhanced by drug-like compounds. Methodology/Principal Findings Based on the finding that ATP and other nucleotide polyphosphates modulate IDE activity at physiological concentrations, we conducted parallel high-throughput screening campaigns in the absence or presence of ATP and identified two compounds—designated Ia1 and Ia2—that significantly stimulate IDE proteolytic activity. Both compounds were found to interfere with the crosslinking of a photoaffinity ATP analogue to IDE, suggesting that they interact with a bona fide ATP-binding domain within IDE. Unexpectedly, we observed highly synergistic activation effects when the activity of Ia1 or Ia2 was tested in the presence of ATP, a finding that has implications for the mechanisms underlying ATP-mediated activation of IDE. Notably, Ia1 and Ia2 activated the degradation of Aβ by ∼700% and ∼400%, respectively, albeit only when Aβ was presented in a mixture also containing shorter substrates. Conclusions/Significance This study describes the first examples of synthetic small-molecule activators of IDE, showing that pharmacological activation of this important protease with drug-like compounds is achievable. These novel activators help to establish the putative ATP-binding domain as a key modulator of IDE proteolytic activity and offer new insights into the modulatory action of ATP. Several larger lessons abstracted from this screen will help inform the design of future screening campaigns and facilitate the eventual development of IDE activators with therapeutic utility. PMID:19384407

  8. Discovering the Possibilities: A Study of African American Youth Resistance and Activism

    ERIC Educational Resources Information Center

    Ellis-Williams, Antoinette

    2007-01-01

    This article presents a study of African American youth resistance and activism. The data revealed that African American youth have a large capacity for activism and ability to resist. Early engagement on issues of social justice, equality and freedom by family, teachers, pastors and community leaders can help to shape political character and…

  9. A Comparison between High and Low English Proficiency Learners' Beliefs.

    ERIC Educational Resources Information Center

    Huang, Shenghui Cindy; Tsai, Rumei Rebecca

    Researchers have discovered that learners' language learning beliefs play a crucial role in influencing learners' choices throughout the learning process. Some researchers suggest that understanding learners' beliefs about language learning can help improve their learning skills. Educators in Taiwan have long been concerned about learners' English…

  10. Discovering a one-dimensional active subspace to quantify multidisciplinary uncertainty in satellite system design

    NASA Astrophysics Data System (ADS)

    Hu, Xingzhi; Parks, Geoffrey T.; Chen, Xiaoqian; Seshadri, Pranay

    2016-03-01

    Uncertainty quantification has recently been receiving much attention from aerospace engineering community. With ever-increasing requirements for robustness and reliability, it is crucial to quantify multidisciplinary uncertainty in satellite system design which dominates overall design direction and cost. However, coupled multi-disciplines and cross propagation hamper the efficiency and accuracy of high-dimensional uncertainty analysis. In this study, an uncertainty quantification methodology based on active subspaces is established for satellite conceptual design. The active subspace effectively reduces the dimension and measures the contributions of input uncertainties. A comprehensive characterization of associated uncertain factors is made and all subsystem models are built for uncertainty propagation. By integrating a system decoupling strategy, the multidisciplinary uncertainty effect is efficiently represented by a one-dimensional active subspace for each design. The identified active subspace is checked by bootstrap resampling for confidence intervals and verified by Monte Carlo propagation for the accuracy. To show the performance of active subspaces, 18 uncertainty parameters of an Earth observation small satellite are exemplified and then another 5 design uncertainties are incorporated. The uncertainties that contribute the most to satellite mass and total cost are ranked, and the quantification of high-dimensional uncertainty is achieved by a relatively small number of support samples. The methodology with considerably less cost exhibits high accuracy and strong adaptability, which provides a potential template to tackle multidisciplinary uncertainty in practical satellite systems.

  11. Identifying and Enhancing the Strengths of Gifted Learners, K-8: Easy-to-Use Activities and Lessons

    ERIC Educational Resources Information Center

    Maccagnano, Ann Marie

    2007-01-01

    Educators can identify children's strengths early on and gain insight into each student's unique abilities by using the numerous ideas and informal assessments in this exciting guide. Gifted and talented specialist Ann Maccagnano offers K-8 teachers challenging activities and engaging lessons to develop and nurture gifted learners' talents.…

  12. Comparison of the Effects of Reflection and Contemplation Activities on Service-Learners' Cognitive and Affective Mindfulness

    ERIC Educational Resources Information Center

    Stewart, Trae; Alrutz, Megan

    2012-01-01

    This study investigates the extent to which service-learners' mindfulness is affected by engagement in reflection (e.g., dialogue) and contemplation activities (e.g., labyrinth tracing). The results are compared within and between treatment groups, while covarying for participants' initial levels of mindfulness. While both dialogue and…

  13. When Are Powerful Learning Environments Effective? The Role of Learner Activities and of Students' Conceptions of Educational Technology

    ERIC Educational Resources Information Center

    Gerjets, Peter H.; Hesse, Friedrich W.

    2004-01-01

    The goal of this chapter is to outline a theoretical and empirical perspective on how learners' conceptions of educational technology might influence their learning activities and thereby determine the power of computer-based learning environments. Starting with an introduction to the concept of powerful learning environments we outline how recent…

  14. The Impact of Vocabulary Enhancement Activities on Vocabulary Acquisition and Retention among Male and Female EFL Learners in Iran

    ERIC Educational Resources Information Center

    Sharafi-Nejad, Maryam; Raftari, Shohreh; Bijami, Maryam; Khavari, Zahra; Ismail, Shaik Abdul Malik Mohamed; Eng, Lin Siew

    2014-01-01

    In general, incidental vocabulary acquisition is represented as the "picking up" of new vocabularies when students are engaged in a variety of reading, listening, speaking, or writing activities. Research has shown when learners read extensively incidental vocabulary acquisition happens. Many EFL students cannot be involved in reading…

  15. From Passive to Active Learners: The "Lived Experience" of Nurses in a Specialist Nephrology Nursing Education Programme

    ERIC Educational Resources Information Center

    Bridger, Jane

    2007-01-01

    Purpose: This study aims to explore the lived experience of learning for a group of staff nurses in the Middle East, who undertook a post-registration nursing education programme in the speciality of nephrology nursing (the NNP) between 2001 and 2002. The broad-based curriculum seeks to develop the staff nurses into active learners, able to…

  16. MAI (Multi-Dimensional Activity Based Integrated Approach): A Strategy for Cognitive Development of the Learners at the Elementary Stage

    ERIC Educational Resources Information Center

    Basantia, Tapan Kumar; Panda, B. N.; Sahoo, Dukhabandhu

    2012-01-01

    Cognitive development of the learners is the prime task of each and every stage of our school education and its importance especially in elementary state is quite worth mentioning. Present study investigated the effectiveness of a new and innovative strategy (i.e., MAI (multi-dimensional activity based integrated approach)) for the development of…

  17. A New Class of Rhomboid Protease Inhibitors Discovered by Activity-Based Fluorescence Polarization

    PubMed Central

    Wolf, Eliane V.; Zeißler, Annett; Vosyka, Oliver; Zeiler, Evelyn; Sieber, Stephan; Verhelst, Steven H. L.

    2013-01-01

    Rhomboids are intramembrane serine proteases that play diverse biological roles, including some that are of potential therapeutical relevance. Up to date, rhomboid inhibitor assays are based on protein substrate cleavage. Although rhomboids have an overlapping substrate specificity, substrates cannot be used universally. To overcome the need for substrates, we developed a screening assay using fluorescence polarization activity-based protein profiling (FluoPol ABPP) that is compatible with membrane proteases. With FluoPol ABPP, we identified new inhibitors for the E. coli rhomboid GlpG. Among these was a structural class that has not yet been reported as rhomboid inhibitors: β-lactones. They form covalent and irreversible complexes with the active site serine of GlpG. The presence of alkyne handles on the β-lactones also allowed activity-based labeling. Overall, these molecules represent a new scaffold for future inhibitor and activity-based probe development, whereas the assay will allow inhibitor screening of ill-characterized membrane proteases. PMID:23991088

  18. Learning for Active Citizenship: Are Australian Youths "Discovering Democracy" at School?

    ERIC Educational Resources Information Center

    Reichert, Frank

    2016-01-01

    For democratic societies to sustain, it is important to educate young people for active and democratic citizenship. This article examines the long-term yields of temporary civics and citizenship educational policies with respect to student participation at school as a precursor of political participation in adult life. The focus is on the…

  19. Let's Discover Computers! Ready-To-Use Computer Discovery Lessons & Activities for Grades K-3.

    ERIC Educational Resources Information Center

    Hamm, Barbara

    This book in intended to teach computer understanding in a concise, straightforward manner using techniques children like such as storytelling, games, and activities. The 38 stories are divided into three sections: (1) "Meeting the Computer" -- basic computer use and care; (2) "Hardware" -- basic hardware, keyboarding skills, printing, and mouse…

  20. Promiscuous activity of ER glucosidase II discovered through donor specificity analysis of UGGT

    SciTech Connect

    Miyagawa, Atsushi; Totani, Kiichiro; Matsuo, Ichiro; Ito, Yukishige

    2010-12-17

    Research highlights: {yields} UGGT has a narrow donor specificity. {yields} UGGT gave several non-natural high-mannose-type glycans. {yields} G-II has a promiscuous activity as broad specificity hexosidase. -- Abstract: In glycoprotein quality control system in the endoplasmic reticulum (ER), UGGT (UDP-glucose:glycoprotein glucosyltransferase) and glucosidase II (G-II) play key roles. UGGT serves as a glycoprotein folding sensor by virtue of its unique specificity to glucosylate glycoproteins at incompletely folded stage. By using various UDP-Glc analogues, we first analyzed donor specificity of UGGT, which was proven to be rather narrow. However, marginal activity was observed with UDP-galactose and UDP-glucuronic acid as well as with 3-, 4- and 6-deoxy glucose analogues to give corresponding transfer products. Intriguingly, G-II smoothly converted all of them back to Man{sub 9}GlcNAc{sub 2}, providing an indication that G-II has a promiscuous activity as a broad specificity hexosidase.

  1. Experimental strategy to discover microbes with gluten-degrading enzyme activities

    NASA Astrophysics Data System (ADS)

    Helmerhorst, Eva J.; Wei, Guoxian

    2014-06-01

    Gluten proteins contained in the cereals barley, rye and wheat cause an inflammatory disorder called celiac disease in genetically predisposed individuals. Certain immunogenic gluten domains are resistant to degradation by mammalian digestive enzymes. Enzymes with the ability to target such domains are potentially of clinical use. Of particular interest are gluten-degrading enzymes that would be naturally present in the human body, e.g. associated with resident microbial species. This manuscript describes a selective gluten agar approach and four enzyme activity assays, including a gliadin zymogram assay, designed for the selection and discovery of novel gluten-degrading microorganisms from human biological samples. Resident and harmless bacteria and/or their derived enzymes could potentially find novel applications in the treatment of celiac disease, in the form of a probiotic agent or as a dietary enzyme supplement.

  2. Experimental Strategy to Discover Microbes with Gluten-degrading Enzyme Activities

    PubMed Central

    Helmerhorst, Eva J.; Wei, Guoxian

    2015-01-01

    Gluten proteins contained in the cereals barley, rye and wheat cause an inflammatory disorder called celiac disease in genetically predisposed individuals. Certain immunogenic gluten domains are resistant to degradation by mammalian digestive enzymes. Enzymes with the ability to target such domains are potentially of clinical use. Of particular interest are gluten-degrading enzymes that would be naturally present in the human body, e.g. associated with resident microbial species. This manuscript describes a selective gluten agar approach and four enzyme activity assays, including a gliadin zymogram assay, designed for the selection and discovery of novel gluten-degrading microorganisms from human biological samples. Resident and harmless bacteria and/or their derived enzymes could potentially find novel applications in the treatment of celiac disease, in the form of a probiotic agent or as a dietary enzyme supplement. PMID:26113763

  3. A review of QSAR studies to discover new drug-like compounds actives against leishmaniasis and trypanosomiasis.

    PubMed

    Castillo-Garit, Juan Alberto; Abad, Concepción; Rodríguez-Borges, J Enrique; Marrero-Ponce, Yovani; Torrens, Francisco

    2012-01-01

    The neglected tropical diseases (NTDs) affect more than one billion people (one-sixth of the world's population) and occur primarily in undeveloped countries in sub-Saharan Africa, Asia, and Latin America. Available drugs for these diseases are decades old and present an important number of limitations, especially high toxicity and, more recently, the emergence of drug resistance. In the last decade several Quantitative Structure-Activity Relationship (QSAR) studies have been developed in order to identify new organic compounds with activity against the parasites responsible for these diseases, which are reviewed in this paper. The topics summarized in this work are: 1) QSAR studies to identify new organic compounds actives against Chaga's disease; 2) Development of QSAR studies to discover new antileishmanial drusg; 3) Computational studies to identify new drug-like compounds against human African trypanosomiasis. Each topic include the general characteristics, epidemiology and chemotherapy of the disease as well as the main QSAR approaches to discovery/identification of new actives compounds for the corresponding neglected disease. The last section is devoted to a new approach know as multi-target QSAR models developed for antiparasitic drugs specifically those actives against trypanosomatid parasites. At present, as a result of these QSAR studies several promising compounds, active against these parasites, are been indentify. However, more efforts will be required in the future to develop more selective (specific) useful drugs.

  4. Discovering Technicolor

    NASA Astrophysics Data System (ADS)

    Andersen, J. R.; Antipin, O.; Azuelos, G.; Del Debbio, L.; Del Nobile, E.; Di Chiara, S.; Hapola, T.; Järvinen, M.; Lowdon, P. J.; Maravin, Y.; Masina, I.; Nardecchia, M.; Pica, C.; Sannino, F.

    2011-09-01

    We provide a pedagogical introduction to extensions of the Standard Model in which the Higgs is composite. These extensions are known as models of dynamical electroweak symmetry breaking or, in brief, Technicolor. Material covered includes: motivations for Technicolor, the construction of underlying gauge theories leading to minimal models of Technicolor, the comparison with electroweak precision data, the low-energy effective theory, the spectrum of the states common to most of the Technicolor models, the decays of the composite particles and the experimental signals at the Large Hadron Collider. The level of the presentation is aimed at readers familiar with the Standard Model but who have little or no prior exposure to Technicolor. Several extensions of the Standard Model featuring a composite Higgs can be reduced to the effective Lagrangian introduced in the text. We establish the relevant experimental benchmarks for Vanilla, Running, Walking, and Custodial Technicolor, and a natural fourth family of leptons, by laying out the framework to discover these models at the Large Hadron Collider.

  5. Assessing the Protective Activity of a Recently Discovered Phenolic Compound against Oxidative Stress Using Computational Chemistry.

    PubMed

    Villuendas-Rey, Yenny; Alvarez-Idaboy, Juan Raul; Galano, Annia

    2015-12-28

    The protection exerted by 3,5-dihydroxy-4-methoxybenzyl alcohol (DHMBA), a phenolic compound recently isolated from the Pacific oyster, against oxidative stress (OS) is investigated using the density functional theory. Our results indicate that DHMBA is an outstanding peroxyl radical scavenger, being about 15 times and 4 orders of magnitude better than Trolox for that purpose in lipid and aqueous media, respectively. It was also found to react faster with HOO(•) than other known antioxidants such as resveratrol and ascorbic acid. DHMBA is also predicted to be able to sequester Cu(II) ions, consequently inhibiting the OS induced by Cu(II)-ascorbate mixtures and downgrading the (•)OH production via the Haber-Weiss reaction. However, it is proposed that DHMBA is more efficient as a primary antioxidant (free radical scavenger), than as a secondary antioxidant (metal ion chelator). In addition, it was found that DHMBA can be efficiently regenerated in aqueous solution, at physiological pH. Such regeneration is expected to contribute to increase the antioxidant protection exerted by DHMBA. These results suggest that probably synthetic routes for this compound should be pursued, because albeit its abundance in nature is rather low, its antioxidant activity is exceptional.

  6. Metaproteomic survey of six aquatic habitats: discovering the identities of microbial populations active in biogeochemical cycling.

    PubMed

    Hanson, Buck T; Hewson, Ian; Madsen, Eugene L

    2014-04-01

    Our goal is to strengthen the foundations of metaproteomics as a microbial community analysis tool that links the functional identity of actively expressed gene products with host phylogeny. We used shotgun metaproteomics to survey waters in six disparate aquatic habitats (Cayuga Lake, NY; Oneida Lake, NY; Gulf of Maine; Chesapeake Bay, MD; Gulf of Mexico; and the South Pacific). Peptide pools prepared from filter-gathered microbial biomass, analyzed by nano-liquid chromatography-mass spectrometry (MS/MS) generating 9,693 ± 1,073 mass spectra identified 326 ± 107 bacterial proteins per sample. Distribution of proteobacterial (Alpha and Beta) and cyanobacterial (Prochlorococcus and Synechococcus spp.) protein hosts across all six samples was consistent with the previously published biogeography for these microorganisms. Marine samples were enriched in transport proteins (TRAP-type for dicarboxylates and ATP binding cassette (ABC)-type for amino acids and carbohydrates) compared with the freshwater samples. We were able to match in situ expression of many key proteins catalyzing C-, N-, and S-cycle processes with their bacterial hosts across all six habitats. Pelagibacter was identified as the host of ABC-type sugar-, organic polyanion-, and glycine betaine-transport proteins; this extends previously published studies of Pelagibacter's in situ biogeochemical role in marine C- and N-metabolism. Proteins matched to Ruegeria confirmed these organism's role in marine waters oxidizing both carbon monoxide and sulfide. By documenting both processes expressed in situ and the identity of host cells, metaproteomics tested several existing hypotheses about ecophysiological processes and provided fodder for new ones. PMID:24425229

  7. Discovering Mendeleev's Model.

    ERIC Educational Resources Information Center

    Sterling, Donna

    1996-01-01

    Presents an activity that introduces the historical developments in science that led to the discovery of the periodic table and lets students experience scientific discovery firsthand. Enables students to learn about patterns among the elements and experience how scientists analyze data to discover patterns and build models. (JRH)

  8. Investigative Research: How It Changes Learner Status.

    ERIC Educational Resources Information Center

    Kenny, Brian

    1993-01-01

    What matters about an educational activity is how learners respond to it. This article examines a program concerned with the learners' needs, through the expression of learners' own meanings, and advances the concept of investigative research as a suitable vehicle for more autonomous learning, through a change in learner status. (26 references)…

  9. An Analysis of Spanish L2 Learners' Orientation through Activity Theory

    ERIC Educational Resources Information Center

    Tocaimaza-Hatch, C. Cecilia

    2015-01-01

    Orientation is defined as the way in which individuals view a task and the means they devise to fulfill it (Appel & Lantolf, 1994; Roebuck, 2000). This study investigated the orientation of twelve learners enrolled in a fourth-semester Spanish L2 university course through the analysis of their interactions during a collaborative…

  10. Mathematics Learning with Multiple Solution Methods: Effects of Types of Solutions and Learners' Activity

    ERIC Educational Resources Information Center

    Große, Cornelia S.

    2014-01-01

    It is commonly suggested to mathematics teachers to present learners different methods in order to solve one problem. This so-called "learning with multiple solution methods" is also recommended from a psychological point of view. However, existing research leaves many questions unanswered, particularly concerning the effects of…

  11. The effects of data-driven learning activities on EFL learners' writing development.

    PubMed

    Luo, Qinqin

    2016-01-01

    Data-driven learning has been proved as an effective approach in helping learners solve various writing problems such as correcting lexical or grammatical errors, improving the use of collocations and generating ideas in writing, etc. This article reports on an empirical study in which data-driven learning was accomplished with the assistance of the user-friendly BNCweb, and presents the evaluation of the outcome by comparing the effectiveness of BNCweb and a search engine Baidu which is most commonly used as reference resource by Chinese learners of English as a foreign language. The quantitative results about 48 Chinese college students revealed that the experimental group which used BNCweb performed significantly better in the post-test in terms of writing fluency and accuracy, as compared with the control group which used the search engine Baidu. However, no significant difference was found between the two groups in terms of writing complexity. The qualitative results about the interview revealed that learners generally showed a positive attitude toward the use of BNCweb but there were still some problems of using corpora in the writing process, thus the combined use of corpora and other types of reference resource was suggested as a possible way to counter the potential barriers for Chinese learners of English. PMID:27536538

  12. Activities for Challenging Gifted Learners by Increasing Complexity in the Common Core

    ERIC Educational Resources Information Center

    McKeone, Alyssa; Caruso, Lenora; Bettle, Kailyn; Chase, Ashley; Bryson, Bridget; Schneider, Jean S.; Rule, Audrey C.

    2015-01-01

    Gifted learners need opportunities for critical and creative thinking to stretch their minds and imaginations. Strategies for increasing complexity in the four core areas of language arts, mathematics, science, and social studies were addressed using the Common Core and Iowa Core Standards through several methods. Descriptive adjective object…

  13. Impact of Consciousness-Raising Activities on Young English Language Learners' Grammar Performance

    ERIC Educational Resources Information Center

    Fatemipour, Hamidreza; Hemmati, Shiva

    2015-01-01

    Grammar Consciousness-Raising (GCR) is an approach to teaching of grammar which learners instead of being taught the given rules, experience language data. The data challenge them to rethink, restructure their existing mental grammar and construct an explicit rule to describe the grammatical feature which the data illustrate (Ellis, 2002). And…

  14. Fostering Active Processing of Instructional Explanations of Learners with High and Low Prior Knowledge

    ERIC Educational Resources Information Center

    Acuna, Santiago R.; Garcia Rodicio, Hector; Sanchez, Emilio

    2011-01-01

    Despite the potential advantages of instructional explanations, evidence indicates that they are usually ineffective. Subsequent work has shown that in order to make instructional explanations effective indeed, one successful strategy is to combine them with indications of the limitations in learners' understanding that they are intended to…

  15. The effects of data-driven learning activities on EFL learners' writing development.

    PubMed

    Luo, Qinqin

    2016-01-01

    Data-driven learning has been proved as an effective approach in helping learners solve various writing problems such as correcting lexical or grammatical errors, improving the use of collocations and generating ideas in writing, etc. This article reports on an empirical study in which data-driven learning was accomplished with the assistance of the user-friendly BNCweb, and presents the evaluation of the outcome by comparing the effectiveness of BNCweb and a search engine Baidu which is most commonly used as reference resource by Chinese learners of English as a foreign language. The quantitative results about 48 Chinese college students revealed that the experimental group which used BNCweb performed significantly better in the post-test in terms of writing fluency and accuracy, as compared with the control group which used the search engine Baidu. However, no significant difference was found between the two groups in terms of writing complexity. The qualitative results about the interview revealed that learners generally showed a positive attitude toward the use of BNCweb but there were still some problems of using corpora in the writing process, thus the combined use of corpora and other types of reference resource was suggested as a possible way to counter the potential barriers for Chinese learners of English.

  16. Developing Learners' Second Language Communicative Competence through Active Learning: Clickers or Communicative Approach?

    ERIC Educational Resources Information Center

    Agbatogun, Alaba Olaoluwakotansibe

    2014-01-01

    The purpose of this study was to compare the impact of clickers, the communicative approach and the lecture method on the communicative competence development of learners who were taught English a second language (ESL). Ninety nine pupils from three primary schools participated in the study. Quasi-experimental non-randomised pre-test posttest…

  17. Active Lessons for Active Brains: Teaching Boys and Other Experiential Learners, Grades 3-10

    ERIC Educational Resources Information Center

    James, Abigail Norfleet; Allison, Sandra Boyd; McKenzie, Caitlin Zimmerman

    2011-01-01

    If you're tired of repeating yourself to students who aren't listening, try a little less talk and a lot more action. The authors follow the best-selling "Teaching the Male Brain and Teaching the Female Brain" with this ready-to-use collection of mathematics, language arts, science, and classroom management strategies. Designed for active,…

  18. Discovering a Rule and Its Mathematical Justification in Modelling Activities Using Spreadsheets: An Experimental Study with Korean Tenth Graders

    ERIC Educational Resources Information Center

    Lew, Hee-Chan; Son, Hong-Chan

    2011-01-01

    The objective of the present study is to describe how students discover rules underlying a certain phenomenon under question and the process in which they mathematically justify such discovery by way of utilizing tables and graphs in the use of the cell reference function of spreadsheets when a problem is not easily solved through simple symbol…

  19. Using What Learners Know.

    ERIC Educational Resources Information Center

    Burns, Mary; Adams, Sharon

    2000-01-01

    This issue of "TAP into Learning" focuses on technology-assisted learning activities for students, in particular on those that use spreadsheets. Articles include: "Using What Learners Know"; "Activity: Grade 7 and 8 Math, Social Studies and Language Arts"; "Managing Growth: Collaborative Decision-Making in Urban Planning"; "Spreadsheets"; "Getting…

  20. Participatory Multimedia Learning: Engaging Learners

    ERIC Educational Resources Information Center

    Kiili, Kristian

    2005-01-01

    The purpose of this paper is to present a participatory multimedia learning model for use in designing multimedia learning environments that support an active learning process, creative participation, and learner engagement. Participatory multimedia learning can be defined as learning with systems that enable learners to produce part of the…

  1. Adult Learners' Week in Australia.

    ERIC Educational Resources Information Center

    Cross, John

    2002-01-01

    Promotional materials and activities for Australia's Adult Learners Week, which are shaped by a variety of stakeholders , include media strategies and a website. Activities are evaluated using a market research company and website and telephone hotline statistics. (SK)

  2. DISCOVER-AQ

    Atmospheric Science Data Center

    2015-01-07

    ... of satellites to monitor air quality for public health and environmental benefit. Through targeted airborne and ground-based observations, ... Relevant Documents:  DISCOVER-AQ - Airborne Science Data for Atmospheric Composition DISCOVER-AQ - NASA Earth ...

  3. The Effects of Pragmatic Consciousness-Raising Activities on the Development of Pragmatic Awareness and Use of Hearsay Evidential Markers for Learners of Japanese as a Foreign Language

    ERIC Educational Resources Information Center

    Narita, Ritsuko

    2009-01-01

    The present study investigates the effectiveness of pragmatic consciousness-raising (PCR) activities in the L2 pragmatic acquisition of hearsay evidential markers by learners of Japanese as a foreign language (JFL). PCR is essentially an inductive approach to facilitating awareness of how language forms are used appropriately in a given context.…

  4. The Development and Evaluation of an Achievement Test for Measuring the Efficacy of Task-Based Writing Activities to Enhance Iranian EFL Learners' Reading Comprehension

    ERIC Educational Resources Information Center

    Nejad, Ferdows Mohsen; Khosravian, Fereshteh

    2014-01-01

    The present study examined the reliability of an achievement test to measure the efficacy of task-based writing activities to improve Iranian EFL learners' reading comprehension at the intermediate level in a private language institute in Ilam, Iran, namely Alefba language institute. To achieve the goal, the techniques for evaluating reliability…

  5. "Dealing With" Unexpected Learner Contributions in Whole Group Activities: An Examination of Novice Language Teacher Discursive Practices

    ERIC Educational Resources Information Center

    Fagan, Drew S.

    2012-01-01

    The current paper examines the discursive practices of one novice English as a Second Language (ESL) teacher "dealing with" learners' unexpected contributions in whole group classroom interactions during teacher- and learner-initiated sequences-of-talk. The study draws from two fields of research: classroom discourse studies…

  6. Discovering Anti-platelet Drug Combinations with an Integrated Model of Activator-Inhibitor Relationships, Activator-Activator Synergies and Inhibitor-Inhibitor Synergies

    PubMed Central

    Lombardi, Federica; Golla, Kalyan; Fitzpatrick, Darren J.; Casey, Fergal P.; Moran, Niamh; Shields, Denis C.

    2015-01-01

    Identifying effective therapeutic drug combinations that modulate complex signaling pathways in platelets is central to the advancement of effective anti-thrombotic therapies. However, there is no systems model of the platelet that predicts responses to different inhibitor combinations. We developed an approach which goes beyond current inhibitor-inhibitor combination screening to efficiently consider other signaling aspects that may give insights into the behaviour of the platelet as a system. We investigated combinations of platelet inhibitors and activators. We evaluated three distinct strands of information, namely: activator-inhibitor combination screens (testing a panel of inhibitors against a panel of activators); inhibitor-inhibitor synergy screens; and activator-activator synergy screens. We demonstrated how these analyses may be efficiently performed, both experimentally and computationally, to identify particular combinations of most interest. Robust tests of activator-activator synergy and of inhibitor-inhibitor synergy required combinations to show significant excesses over the double doses of each component. Modeling identified multiple effects of an inhibitor of the P2Y12 ADP receptor, and complementarity between inhibitor-inhibitor synergy effects and activator-inhibitor combination effects. This approach accelerates the mapping of combination effects of compounds to develop combinations that may be therapeutically beneficial. We integrated the three information sources into a unified model that predicted the benefits of a triple drug combination targeting ADP, thromboxane and thrombin signaling. PMID:25875950

  7. Transcriptome Analysis of Buds and Leaves Using 454 Pyrosequencing to Discover Genes Associated with the Biosynthesis of Active Ingredients in Lonicera japonica Thunb.

    PubMed Central

    Li, Ying; Li, Chunfang; Zhu, Yingjie; Yan, Haixia; Sun, Zhiying; Sun, Chao; Song, Jingyuan; Bi, Yu’an; Shen, Juan; Cheng, Ruiyang; Wang, Zhenzhong; Xiao, Wei; Chen, Shilin

    2013-01-01

    Background Lonicera japonica Thunb. is a plant used in traditional Chinese medicine known for its anti-inflammatory, anti-oxidative, anti-carcinogenic, and antiviral pharmacological properties. The major active secondary metabolites of this plant are chlorogenic acid (CGA) and luteoloside. While the biosynthetic pathways of these metabolites are relatively well known, the genetic information available for this species, especially the biosynthetic pathways of its active ingredients, is limited. Methodology/Principal Findings We obtained one million reads (average length of 400 bp) in a whole sequence run using a Roche/454 GS FLX titanium platform. Altogether, 85.69% of the unigenes covering the entire life cycle of the plant were annotated and 325 unigenes were assigned to secondary metabolic pathways. Moreover, 2039 unigenes were predicted as transcription factors. Nearly all of the possible enzymes involved in the biosynthesis of CGA and luteoloside were discovered in L. japonica. Three hydroxycinnamoyl transferase genes, including two hydroxycinnamoyl-CoA quinate hydroxycinnamoyl transferase genes and one hydroxycinnamoyl-CoA shikimate/quinate hydroxycinnamoyl transferase (HCT) gene featuring high similarity to known genes from other species, were cloned. The HCT gene was discovered for the first time in L. japonica. In addition, 188 candidate cytochrome P450 unigenes and 245 glycosyltransferase unigenes were found in the expressed sequence tag (EST) dataset. Conclusion This study provides a high quality EST database for L. japonica by 454 pyrosequencing. Based on the EST annotation, a set of putative genes involved in CGA and luteoloside biosynthetic pathways were discovered. The database serves as an important source of public information on genetic markers, gene expression, genomics, and functional genomics in L. japonica. PMID:23638167

  8. Exploring Shifts in Middle School Learners' Modeling Activity While Generating Drawings, Animations, and Computational Simulations of Molecular Diffusion

    NASA Astrophysics Data System (ADS)

    Wilkerson-Jerde, Michelle H.; Gravel, Brian E.; Macrander, Christopher A.

    2015-04-01

    Modeling and using technology are two practices of particular interest to K-12 science educators. These practices are inextricably linked among professionals, who engage in modeling activity with and across a variety of representational technologies. In this paper, we explore the practices of five sixth-grade girls as they generated models of smell diffusion using drawing, stop-motion animation, and computational simulation during a multi-day workshop. We analyze video, student discourse, and artifacts to address the questions: In what ways did learners' modeling practices, reasoning about mechanism, and ideas about smell shift as they worked across this variety of representational technologies? And, what supports enabled them to persist and progress in the modeling activity? We found that the girls engaged in two distinct modeling cycles that reflected persistence and deepening engagement in the task. In the first, messing about, they focused on describing and representing many ideas related to the spread of smell at once. In the second, digging in, they focused on testing and revising specific mechanisms that underlie smell diffusion. Upon deeper analysis, we found these cycles were linked to the girls' invention of "oogtom," a representational object that encapsulated many ideas from the first cycle and allowed the girls to restart modeling with the mechanistic focus required to construct simulations. We analyze the role of activity design, facilitation, and technological infrastructure in this pattern of engagement over the course of the workshop and discuss implications for future research, curriculum design, and classroom practice.

  9. Discovering the active sites for C3 separation in MIL-100(Fe) by using operando IR spectroscopy.

    PubMed

    Wuttke, Stefan; Bazin, Philippe; Vimont, Alexandre; Serre, Christian; Seo, You-Kyong; Hwang, Young Kyu; Chang, Jong-San; Férey, Gérard; Daturi, Marco

    2012-09-17

    A reducible MIL-100(Fe) metal-organic framework (MOF) was investigated for the separation of a propane/propene mixture. An operando methodology was applied (for the first time in the case of a MOF) in order to shed light on the separation mechanism. Breakthrough curves were obtained as in traditional separation column experiments, but monitoring the material surface online, thus providing evidences on the adsorption sites. The qualitative and quantitative analyses of Fe(II) and, to some extent, Fe(III) sites were possible, upon different activation protocols. Moreover, it was possible to identify the nature and the role of the active sites in the separation process by selective poisoning of one family of sites: it was clearly evidenced that the unsaturated Fe(II) sites are mainly responsible for the separation effect of the propane/propene mixture, thanks to their affinity for the unsaturated bonds, such as the C=C entities in propene. The activity of the highly concentrated Fe(III) sites was also highlighted.

  10. Discovering the enzyme mimetic activity of metal-organic framework (MOF) for label-free and colorimetric sensing of biomolecules.

    PubMed

    Wang, Ying; Zhu, Yingjing; Binyam, Atsebeha; Liu, Misha; Wu, Yinan; Li, Fengting

    2016-12-15

    A label-free sensing strategy based on the enzyme-mimicking activity of MOF was demonstrated for colorimetric detection of biomolecules. Firstly obvious blue color was observed due to the high efficiency of peroxidase-like catalytic activity of Fe-MIL-88A (an ion-based MOF material) toward 3,3',5,5'-tetramethylbenzidine (TMB). Then in the presence of target biomolecule and corresponding aptamer, the mimetic activity of Fe-MIL-88A can be strongly inhibited and used directly to realize the colorimetric detection. On the basis of the interesting findings, we designed a straightforward, label-free and sensitive colorimetric method for biomolecule detection by using the enzyme mimetic property of MOF coupling with molecular recognition element. Compared with the existed publications, our work breaks the routine way by setting up an inorganic-organic MOF-aptamer hybrid platform for colorimetric determination of biomolecules, expanding the targets scope from H2O2 or glucose to biomolecules. As a proof of concept, thrombin and thrombin aptamer was used as a model analyte. The limit of detection of 10nM can be achieved with naked eyes and ultrahigh selectivity of thrombin toward numerous interfering substances with 10-fold concentration was demonstrated significantly. Of note, the method was further applied for the detection of thrombin in human serum samples, showing the results in agreement with those values obtained in an immobilization buffer by the colorimetric method. This inorganic-organic MOF-aptamer sensing strategy may in principle be universally applicable for the detection of a range of environmental or biomedical molecules of interests. PMID:27419909

  11. Discovering the enzyme mimetic activity of metal-organic framework (MOF) for label-free and colorimetric sensing of biomolecules.

    PubMed

    Wang, Ying; Zhu, Yingjing; Binyam, Atsebeha; Liu, Misha; Wu, Yinan; Li, Fengting

    2016-12-15

    A label-free sensing strategy based on the enzyme-mimicking activity of MOF was demonstrated for colorimetric detection of biomolecules. Firstly obvious blue color was observed due to the high efficiency of peroxidase-like catalytic activity of Fe-MIL-88A (an ion-based MOF material) toward 3,3',5,5'-tetramethylbenzidine (TMB). Then in the presence of target biomolecule and corresponding aptamer, the mimetic activity of Fe-MIL-88A can be strongly inhibited and used directly to realize the colorimetric detection. On the basis of the interesting findings, we designed a straightforward, label-free and sensitive colorimetric method for biomolecule detection by using the enzyme mimetic property of MOF coupling with molecular recognition element. Compared with the existed publications, our work breaks the routine way by setting up an inorganic-organic MOF-aptamer hybrid platform for colorimetric determination of biomolecules, expanding the targets scope from H2O2 or glucose to biomolecules. As a proof of concept, thrombin and thrombin aptamer was used as a model analyte. The limit of detection of 10nM can be achieved with naked eyes and ultrahigh selectivity of thrombin toward numerous interfering substances with 10-fold concentration was demonstrated significantly. Of note, the method was further applied for the detection of thrombin in human serum samples, showing the results in agreement with those values obtained in an immobilization buffer by the colorimetric method. This inorganic-organic MOF-aptamer sensing strategy may in principle be universally applicable for the detection of a range of environmental or biomedical molecules of interests.

  12. Families Discover the Outdoors Together.

    ERIC Educational Resources Information Center

    Parent, Polly

    1980-01-01

    An idea for hands-on activities for families to use in discovering the outdoors together when visiting parks is described. Family packs contain discovery and natural history cards, thermometers, magnifiers, insect boxes, photographs of animals and plants, a pencil, and a feedback form. (SA)

  13. Material composition assessment and discovering sublimation activity on asteroids 145 Adeona, 704 Interamnia, 779 Nina, and 1474 Beira

    NASA Astrophysics Data System (ADS)

    Busarev, V. V.; Barabanov, S. I.; Puzin, V. B.

    2016-07-01

    Spectrophotometric observations of 145 Adeona, 704 Interamnia, 779 Nina, and 1474 Beira—asteroids of close primitive types—allowed us to detect similar mineralogical absorption bands in their reflectance spectra centered in the range 0.35 to 0.92 μm; the bands are at 0.38, 0.44, and 0.67-0.71 μm. On the same asteroids, the spectral signs of simultaneous sublimation activity were found for the first time. Namely, there are maxima at ˜0.35-0.60 μm in the reflectance spectra of Adeona, Interamnia, and Nina and at ˜0.55-075 μm in the spectra of Beira. We connect this activity with small heliocentric distances of the asteroids and, consequently, with a high insolation at their surfaces. Examination of the samples of probable analogues allowed us to identify Fe3+ and Fe2+ in the material of these asteroids through the mentioned absorption bands. For analogues, we took powdered samples of carbonaceous chondrites Orgueil (CI), Mighei (CM2), Murchison (CM2), and Boriskino (CM2), as well as hydrosilicates of the serpentine group. Laboratory spectral reflectance study of the samples of low-iron Mg serpentines (<2 wt % FeO) showed that the equivalent width of the absorption band centered at 0.44-0.46 μm strongly correlates with the content of Fe3+ in octahedral and tetrahedral coordinations. Our conclusion is that this absorption band can be used as a qualitative indicator of Fe3+ in the surface matter of asteroids and other solid celestial bodies. The comparison of the listed analog samples and the asteroids by parameters of the spectral features suggests that the silicate component of the asteroids' surface material is a mixture of hydrated and oxidized compounds, including oxides and hydroxides of bivalent and trivalent iron and carbonaceous-chondritic material. At the same time, the sublimation activity of Adeona, Interamnia, Nina, and Beira at high surface temperatures points to a substantial content of water ice in their material. This contradicts the

  14. Language through the Seasons: Dramatic Play Activities for Early Childhood Learners.

    ERIC Educational Resources Information Center

    Amdur, Judith

    This workbook brings together activities to aid in motivating children to concentrate, listen, respond, think, and learn. The activities rely upon play-like tasks involving drama, music, and other forms of creative expression. The activities are organized by the season in which they are appropriate and include songs, dramatic sequences, stories,…

  15. Activity Based Learning as Self-Accessing Strategy to Promote Learners' Autonomy

    ERIC Educational Resources Information Center

    Ravi, R.; Xavier, P.

    2007-01-01

    The Activity Based Learning (ABL) is unique and effective to attract out-of -school children to schools. It facilitates readiness for learning, instruction, reinforcement and evaluation. ABL has transformed the classrooms into hubs of activities and meaningful learning. Activity-based learning, naturally leads to cooperative learning. Since group…

  16. The Structural Challenge: A Simple Design-Based Science Activity to Foster Creativity among Kinaesthetic Learners

    ERIC Educational Resources Information Center

    Amir, Nazir; Subramaniam, R.

    2014-01-01

    A suitable way for teachers to present science content and foster creativity in less academically inclined students is by getting them to engage in design-based science activities and guiding them along the way. This study illustrates how a design-and-make activity was carried out with the aim of getting students to showcase their creativity while…

  17. Learner Uptake and Acquisition in Three Grammar-Oriented Production Activities

    ERIC Educational Resources Information Center

    Reinders, Hayo

    2009-01-01

    This study investigates the effects of three types of production activities on uptake (operationalized as correct suppliance of the target structure during the treatment) and acquisition of negative adverbs in English. It also investigates the relationship between uptake and acquisition. The three production activities included a dictation, an…

  18. Objects prompt authentic scientific activities among learners in a museum programme

    NASA Astrophysics Data System (ADS)

    Achiam, Marianne; Simony, Leonora; Kramer Lindow, Bent Erik

    2016-04-01

    Although the scientific disciplines conduct practical work in different ways, all consider practical work as the essential way of connecting objects and phenomena with ideas and the abstract. Accordingly, practical work is regarded as central to science education as well. We investigate a practical, object-based palaeontology programme at a natural history museum to identify how palaeontological objects prompt scientific activity among upper secondary school students. We first construct a theoretical framework based on an analysis of the programme's palaeontological content. From this, we build our reference model, which considers the specimens used in the programme, possible palaeontological interpretations of these specimens, and the conditions inherent in the programme. We use the reference model to analyse the activities of programme participants, and illustrate how these activities are palaeontologically authentic. Finally, we discuss our findings, examining the mechanism by which the specimens prompt scientific activities. We also discuss our discipline-based approach, and how it allows us to positively identify participants' activities as authentic. We conclude by discussing the implications of our findings.

  19. The Effect of a Timed Reading Activity on EFL Learners: Speed, Comprehension, and Perceptions

    ERIC Educational Resources Information Center

    Chang, Anna C-S

    2010-01-01

    To develop reading fluency, a 13-week timed reading activity was integrated into a normal curriculum with the aim of improving students' reading rates. Participants were 84 college students divided into an experimental and a control group. The test instruments involved pretests and posttests on reading speed and comprehension. Students'…

  20. Research on the Healthy Lifestyle Model, Active Ageing, and Loneliness of Senior Learners

    ERIC Educational Resources Information Center

    Hung, Jui-Ying; Lu, Kuo-Song

    2014-01-01

    Taiwan has the fastest ageing population in the world. Thus, the government and local policy makers need to formulate policies not just for the nursing and care needs of the aged. They also need to actively promote the need for lifelong learning among seniors in order to achieve elderly-friendly objectives, such as health promotion and delays in…

  1. The Effect of Curricular Activities on Learner Autonomy: The Perspective of Undergraduate Mechanical Engineering Students

    ERIC Educational Resources Information Center

    Duarte, M.; Leite, C.; Mouraz, A.

    2016-01-01

    This study researches how first-year engineering students perceived the influence of curricular activities on their own learning autonomy, measured with an adaptation of the Personal Responsibility Orientation to Self-direction in Learning Scale (PRO-SDLS). Participants were questioned to assess the influence of the teacher's role. The results…

  2. Growing into Greatness: A Study of a Local History Group of Active-Retired Learners

    ERIC Educational Resources Information Center

    Corrigan, Trudy; Byrne, Brid; Harris, Phyllis; Lalor, Maureen; O'Connor, Maura; O'Reilly, Kathleen; Quinn, Frank; Forde, Kathleen

    2005-01-01

    Research in Canada on the learning needs of older people looked at such issues as how to cope with changes in society, the need to make a contribution and the need to be influential. The White Paper on Adult Education "Learning for Life" notes that strategies for active ageing stress the critical importance of access to learning as a key tool in…

  3. The Effect of Post-Teaching Activity Type on Vocabulary Learning of Elementary EFL Learners

    ERIC Educational Resources Information Center

    Sadeghi, Karim; Sharifi, Faranak

    2013-01-01

    Considering the significant role of vocabulary in learning a language, and teachers' great responsibility in providing opportunities to facilitate this learning, many studies have focused on the best means of achieving a good knowledge of vocabulary. This study set out to investigate the effect of four post-teaching activities, namely game,…

  4. Turning Reluctant Learners into Inspired Learners

    ERIC Educational Resources Information Center

    Sanacore, Joseph

    2008-01-01

    Motivation is a key factor in promoting academic success, and intrinsic motivation is especially important for developing autonomous learners. Reluctant learners, in particular, benefit from intrinsic motivation that makes learning relevant to their lives. In this article, the author describes commonalities of reluctant learners and presents…

  5. Surface and Column Variations of CO2 using Weighting Functions for Future Active Remote CO2 sensors and Data from DISCOVER-AQ Field Campaign

    NASA Astrophysics Data System (ADS)

    Yang, M. M.; Choi, Y.; Kooi, S. A.; Browell, E. V.

    2014-12-01

    Fast response (1 Hz) and high precision (< 0.1 ppmv) in situ CO2 measurements were recorded onboard the NASA P-3B during the DISCOVER-AQ (Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality) Field Campaign, to investigate the ability of space-based observations to accurately assess near surface conditions related to air quality. The campaign spanned 4 years and took place over four geographically different locations. These included, Washington DC/Baltimore, MD (July 2011), San Joaquin Valley, CA (January - February 2013), Houston, TX (September 2013), and Denver, CO (July-August 2014). With the objective of obtaining better CO2 column calculations, each of these campaigns consisted of missed approaches and approximately two hundred vertical soundings of CO2 (from the surface to about 5 km). In this study, surface and column-averaged CO2 mixing ratio values from the vertical soundings in the four different urban areas are used to examine the temporal and spatial variability of CO2 within the lower troposphere. Tracers such as CO, CH2O, NOx, and NMHCs will be used to identify the source of variations observed in these urban sites. Additionally, we apply nominal CO2 column weighting functions for potential future active remote CO2 sensors operating in the 1.57-mm and 2.05-mm measurement regions to convert the in situ CO2 vertical mixing ratio profiles to variations in CO2 column optical depths, which is what the active remote sensors actually measure. Using statistics calculated from the optical depths at each urban site measured during the DISCOVER-AQ field campaign and for each nominal weighting function, we compare the natural variability of CO2 columns in the lower troposphere; relate the CO2 column variability to surface emissions; and show the measurement requirements for the future ASCENDS (Active Sensing of CO2 Emissions over Nights, Days, and Seasons) in the continental U.S. urban areas.

  6. Learner Personas in CALL

    ERIC Educational Resources Information Center

    Heift, Trude

    2007-01-01

    In examining the titles of this year's conference presentations, the author noticed quite a few papers that focus on learner-specific issues, for instance, papers that address learning styles, learner needs, personality and learning, learner modeling and, more generally, pedagogical issues that deal with individual learner differences in…

  7. Examining Student Cognitive and Affective Engagement and Reading Instructional Activities: Spanish-Speaking English Learners' Reading Profiles

    ERIC Educational Resources Information Center

    Barber, Ana Taboada; Gallagher, Melissa; Smith, Peet; Buehl, Michelle M.; Beck, Jori S.

    2016-01-01

    Recent research has emphasized the key role of engagement in helping students succeed in school and beyond. Given the academic struggles that many English learners (ELs) face as they transition to middle school, exploring the facets of engagement in middle school ELs is needed. We established reader profiles for eight sixth grade Hispanic ELs and…

  8. We Are What We Do: Examining Learner-Generated Content in the Anatomy Laboratory through the Lens of Activity Theory

    ERIC Educational Resources Information Center

    Doubleday, Alison F.; Wille, Sarah J.

    2014-01-01

    Video and photography are often used for delivering content within the anatomical sciences. However, instructors typically produce these resources to provide instructional or procedural information. Although the benefits of learner-generated content have been explored within educational research, virtually no studies have investigated the use of…

  9. Teacher-Made Tactile Science Materials with Critical and Creative Thinking Activities for Learners Including Those with Visual Impairments

    ERIC Educational Resources Information Center

    Teske, Jolene K.; Gray, Phyllis; Kuhn, Mason A.; Clausen, Courtney K.; Smith, Latisha L.; Alsubia, Sukainah A.; Ghayoorad, Maryam; Rule, Audrey C.; Schneider, Jean Suchsland

    2014-01-01

    Gifted students with visual impairments are twice exceptional learners and may not evidence their advanced science aptitudes without appropriate accommodations for learning science. However, effective tactile science teaching materials may be easily made. Recent research has shown that when tactile materials are used with "all" students…

  10. Morphing into Adolescents: Active Word Learning for English-Language Learners and Their Classmates in Middle School

    ERIC Educational Resources Information Center

    Kieffer, Michael J.; Lesaux, Nonie K.

    2010-01-01

    Many students arrive at middle school without the academic language skills they need to read sophisticated texts with comprehension. In particular, English language learners and students from low-income backgrounds attending underresourced, urban middle schools lack opportunities to learn the thousands of academic words they need to succeed. To…

  11. Style Shifts among Japanese Learners before and after Study Abroad in Japan: Becoming Active Social Agents in Japanese

    ERIC Educational Resources Information Center

    Iwasaki, Noriko

    2010-01-01

    Previous studies on L2 Japanese sojourners often reported that learners overuse the plain style or haphazardly mix the plain and polite styles upon return. These styles, which are often associated with formal or informal contexts, also index complex social and situational meanings, and native speakers are reported to shift their styles to create…

  12. Discovering the Artist Within.

    ERIC Educational Resources Information Center

    Hamill, Sam

    1999-01-01

    Describes a personal artistic struggle against heroin addiction, advising teachers of the difficulty of working to discover and express one's developing self. Considers the effect of poetry and philosophy on the developing creative process. Provides samples of the author's own poetry to demonstrate creative development, as an example to Montessori…

  13. Discovering the Solar System

    NASA Astrophysics Data System (ADS)

    Jones, Barrie W.

    1999-04-01

    Discovering the Solar System Barrie W. Jones The Open University, Milton Keynes, UK Discovering the Solar System is a comprehensive, up-to-date account of the Solar System and of the ways in which the various bodies have been investigated and modelled. The approach is thematic, with sequences of chapters on the interiors of planetary bodies, on their surfaces, and on their atmospheres. Within each sequence there is a chapter on general principles and processes followed by one or two chapters on specific bodies. There is also an introductory chapter, a chapter on the origin of the Solar System, and a chapter on asteroids, comets and meteorites. Liberally illustrated with diagrams, black and white photographs and colour plates, Discovering the Solar System also features: * tables of essential data * question and answers within the text * end of section review questions with answers and comments Discovering the Solar System is essential reading for all undergraduate students for whom astronomy or planetary science are components of their degrees, and for those at a more advanced level approaching the subject for the first time. It will also be of great interest to non-specialists with a keen interest in astronomy. A small amount of scientific knowledge is assumed plus familiarity with basic algebra and graphs. There is no calculus. Praise for this book includes: ".certainly qualifies as an authoritative text. The author clearly has an encyclopedic knowledge of the subject." Meteorics and Planetary Science ".liberally doused with relevant graphs, tables, and black and white figures of good quality." EOS, Transactions of the American Geophysical Union ".one of the best books on the Solar System I have seen. The general accuracy and quality of the content is excellent." Journal of the British Astronomical Association

  14. Student Perceptions of Learner-Centered Teaching

    ERIC Educational Resources Information Center

    Wohlfarth, DeDe; Sheras, Daniel; Bennett, Jessica L.; Simon, Bethany; Pimentel, Jody H.; Gabel, Laura E.

    2008-01-01

    The learner-centered paradigm departs from traditional teaching models by focusing on students more than teachers and learning more than teaching. Thus, classes are more egalitarian; they emphasize critical thinking, active learning, and real-world assignments. Graduate students in learner-centered classrooms were surveyed about perceptions of…

  15. Engaging Learner Support: An Investigation of Faculty-Library Collaboration to Provide Live Course-Specific Learner Support in the Online Classroom Environment

    ERIC Educational Resources Information Center

    Fields, Alison

    2014-01-01

    Collaboration between faculty and learner support can create seamless services for e-learners. Providing access to learning materials and activities with co-located tailored learner support creates an environment in which e-learners can easily access everything they need for an enhanced, supported, and more focused learning experience. The…

  16. The Learners' Mental Models of Television in Mathematics.

    ERIC Educational Resources Information Center

    Sumalee, Chaijaroen

    1999-01-01

    Examines the learners' mental models of television in actual media classroom activity by which knowledge was constructed. Findings revealed how media capabilities and the instructional designs that employ them interact with the learners and the task characteristics to influence the formation of the learners' mental models and their learning…

  17. The Development of Expert Learners in the Classroom

    ERIC Educational Resources Information Center

    Rahman, Saemah; Mahmud, Zuria; Yassin, Siti Fatimah Mohd; Amir, Ruslin; Ilias, Khadijah Wan

    2010-01-01

    The term "expert learner" refers to students who are actively engaged with the materials learned and take responsibility for their own learning. Literature reviews suggested the use of metacognitive approach to help develop students to become expert learners. Research on development of expert learners can be traced from movements that…

  18. The Tip of the Iceberg: Factors Affecting Learner Motivation

    ERIC Educational Resources Information Center

    Littlejohn, Andrew

    2008-01-01

    Teachers' informal discussions of learner motivation often emphasize the need to find ways to motivate learners, most usually through "fun" or "dynamic" activities. This paper starts from the assumption, however, that part of the work of the teacher is to avoid the "demotivation" of learners, and that there is a need to consider the overall…

  19. Matrix of Basic Learner Outcomes for Career Education.

    ERIC Educational Resources Information Center

    Partners in Career Education, Arlington, TX.

    The document provides a means of organizing the career education learner outcomes for Texas students into a scope and sequence to be used as a framework for continued development of learner activities. The 177 learner outcomes (objectives) are presented in the following nine categories: career planning and decision making, career and occupational…

  20. Merger-driven fueling of active galactic nuclei: Six dual and of AGNs discovered with Chandra and Hubble Space Telescope observations

    SciTech Connect

    Comerford, Julia M.; Pooley, David; Barrows, R. Scott; Greene, Jenny E.; Zakamska, Nadia L.; Madejski, Greg M.; Cooper, Michael C.

    2015-06-19

    Dual active galactic nuclei (AGNs) and offset AGNs are kpc-scale separation supermassive black holes pairs created during galaxy mergers, where both or one of the black holes are AGNs, respectively. These dual and offset AGNs are valuable probes of the link between mergers and AGNs but are challenging to identify. Here we present Chandra/ACIS observations of 12 optically selected dual AGN candidates at $z\\lt 0.34$, where we use the X-rays to identify AGNs. We also present Hubble Space Telescope/Wide Field Camera 3 observations of 10 of these candidates, which reveal any stellar bulges accompanying the AGNs. We discover a dual AGN system with separation ${\\rm \\Delta }x=2.2$ kpc, where the two stellar bulges have coincident [O iii] λ5007 and X-ray sources. This system is an extremely minor merger (460:1) that may include a dwarf galaxy hosting an intermediate mass black hole. We also find six single AGNs, and five systems that are either dual or offset AGNs with separations ${\\rm \\Delta }x\\lt 10$ kpc. Four of the six dual AGNs and dual/offset AGNs are in ongoing major mergers, and these AGNs are 10 times more luminous, on average, than the single AGNs in our sample. This hints that major mergers may preferentially trigger higher luminosity AGNs. Further, we find that confirmed dual AGNs have hard X-ray luminosities that are half of those of single AGNs at fixed [O III] λ5007 luminosity, on average. Lastly, this could be explained by high densities of gas funneled to galaxy centers during mergers, and emphasizes the need for deeper X-ray observations of dual AGN candidates.

  1. Merger-driven fueling of active galactic nuclei: Six dual and of AGNs discovered with Chandra and Hubble Space Telescope observations

    DOE PAGES

    Comerford, Julia M.; Pooley, David; Barrows, R. Scott; Greene, Jenny E.; Zakamska, Nadia L.; Madejski, Greg M.; Cooper, Michael C.

    2015-06-19

    Dual active galactic nuclei (AGNs) and offset AGNs are kpc-scale separation supermassive black holes pairs created during galaxy mergers, where both or one of the black holes are AGNs, respectively. These dual and offset AGNs are valuable probes of the link between mergers and AGNs but are challenging to identify. Here we present Chandra/ACIS observations of 12 optically selected dual AGN candidates atmore » $$z\\lt 0.34$$, where we use the X-rays to identify AGNs. We also present Hubble Space Telescope/Wide Field Camera 3 observations of 10 of these candidates, which reveal any stellar bulges accompanying the AGNs. We discover a dual AGN system with separation $${\\rm \\Delta }x=2.2$$ kpc, where the two stellar bulges have coincident [O iii] λ5007 and X-ray sources. This system is an extremely minor merger (460:1) that may include a dwarf galaxy hosting an intermediate mass black hole. We also find six single AGNs, and five systems that are either dual or offset AGNs with separations $${\\rm \\Delta }x\\lt 10$$ kpc. Four of the six dual AGNs and dual/offset AGNs are in ongoing major mergers, and these AGNs are 10 times more luminous, on average, than the single AGNs in our sample. This hints that major mergers may preferentially trigger higher luminosity AGNs. Further, we find that confirmed dual AGNs have hard X-ray luminosities that are half of those of single AGNs at fixed [O III] λ5007 luminosity, on average. Lastly, this could be explained by high densities of gas funneled to galaxy centers during mergers, and emphasizes the need for deeper X-ray observations of dual AGN candidates.« less

  2. Discovering system requirements

    SciTech Connect

    Bahill, A.T.; Bentz, B.; Dean, F.F.

    1996-07-01

    Cost and schedule overruns are often caused by poor requirements that are produced by people who do not understand the requirements process. This report provides a high-level overview of the system requirements process, explaining types, sources, and characteristics of good requirements. System requirements, however, are seldom stated by the customer. Therefore, this report shows ways to help you work with your customer to discover the system requirements. It also explains terminology commonly used in the requirements development field, such as verification, validation, technical performance measures, and the various design reviews.

  3. Expanded Perspectives on Autonomous Learners

    ERIC Educational Resources Information Center

    Oxford, Rebecca L.

    2015-01-01

    This paper explores two general perspectives on autonomous learners: psychological and sociocultural. These perspectives introduce a range of theoretically grounded facets of autonomous learners, facets such as the self-regulated learner, the emotionally intelligent learner, the self-determined learner, the mediated learner, the socioculturally…

  4. Listening to Learners.

    ERIC Educational Resources Information Center

    Ravenhall, Mark

    This booklet looks at the role of learner feedback in the quality improvement process. It suggests how adult and community learning (ACL) providers can adapt and improve their practice to meet the needs of learners in the changed policy context. Chapter 1 explores why providers should listen to learners and finds that listening to learners…

  5. Learner and Faculty Support

    ERIC Educational Resources Information Center

    Guan, Sharon; Stanford, Daniel

    2016-01-01

    This chapter identifies effective ways to address learner and faculty support. It introduces methods for building a successful learner support system by providing sufficient resources and proactively addressing learner motivation. It also addresses effective faculty support through institutional policies, resources, training, and course…

  6. Discovering the Expanding Universe

    NASA Astrophysics Data System (ADS)

    Nussbaumer, Harry; Bieri, Lydia; Sandage, Foreword by Allan

    2009-03-01

    Acknowledgments; Foreword; 1. Introduction; 2. Cosmological concepts at the end of the Middle Ages; 3. Nebulae as a new astronomical phenomenon; 4. On the construction of the Heavens; 5. Island universes turn into astronomical facts: a universe of galaxies; 6. The early cosmology of Einstein and de Sitter; 7. The dynamical universe of Friedmann; 8. Redshifts: how to reconcile Slipher and de Sitter?; 9. Lemaître discovers the expanding universe; 10. Hubble's contribution of 1929; 11. The breakthrough for the expanding universe; 12. Hubble's anger about de Sitter; 13. Robertson and Tolman join the game; 14. The Einstein-de Sitter universe; 15. Are Sun and Earth older than the universe?; 16. In search of alternative tracks; 17. The seed for the Big Bang; 18. Summary and Postscript; Appendix; References; Index.

  7. Student Discovers New Pulsar

    NASA Astrophysics Data System (ADS)

    2010-01-01

    A West Virginia high-school student has discovered a new pulsar, using data from the giant Robert C. Byrd Green Bank Telescope (GBT). Shay Bloxton, 15, a participant in a project in which students analyze data from the radio telescope, spotted evidence of the pulsar on October 15. Bloxton, along with NRAO astronomers observed the object again one month later. The new observation confirmed that the object is a pulsar, a rotating, superdense neutron star. Bloxton is a sophomore at Nicholas County High School in Summersville, West Virginia. "I was very excited when I found out I had actually made a discovery," Bloxton said. She went to Green Bank in November to participate in the follow-up observation. She termed that visit "a great experience." "It also helped me learn a lot about how observations with the GBT are actually done," she added. The project in which she participated, called the Pulsar Search Collaboratory (PSC), is a joint project of the National Radio Astronomy Observatory (NRAO) and West Virginia University, funded by a grant from the National Science Foundation. Pulsars are known for their lighthouse-like beams of radio waves that sweep through space as the neutron star rotates, creating a pulse as the beam sweeps by the Earth. First discovered in 1967, pulsars serve as valuable natural "laboratories" for physicists studying exotic states of matter, quantum mechanics and General Relativity. The GBT, dedicated in 2000, has become one of the world's leading tools for discovering and studying pulsars. The PSC, led by NRAO Education Officer Sue Ann Heatherly and Project Director Rachel Rosen, includes training for teachers and student leaders, and provides parcels of data from the GBT to student teams. The project involves teachers and students in helping astronomers analyze data from 1500 hours of observing with the GBT. The 120 terabytes of data were produced by 70,000 individual pointings of the giant, 17-million-pound telescope. Some 300 hours of the

  8. Between the Social and the Selfish: Learner Autonomy in Online Environments

    ERIC Educational Resources Information Center

    Lewis, Tim

    2013-01-01

    This paper explores what it means to be an autonomous learner in an online social context. Using distinctions originally drawn by Jürgen Habermas, it argues that classic accounts of learner autonomy as teleological action are inadequate to explain learner activity in group settings. It points out that learners in such settings display attitudes…

  9. Learner Development in Language Learning.

    ERIC Educational Resources Information Center

    Wenden, Anita L.

    2002-01-01

    Focuses on learner development, a learner-centered innovation in foreign language-second language instruction that responds to learner diversity by aiming to improve the language learner's ability to learn a language. Describes various ideas that shaped early practice in learner development, and provides an evaluation of the theory and practice in…

  10. Evaluation of Nontraditional Age Learners' Experiences in Internet-Based Clinical Social Work Courses

    ERIC Educational Resources Information Center

    Swanke, Jayme; Zeman, Laura Dreuth

    2015-01-01

    This study involves an evaluation of online learners' experiences with two Internet-based clinical social work courses. The evaluation sought to discover whether there were differences in learning between traditional (under 25 years old) and nontraditional age learners (25 years and over) who completed the asynchronous online course. The study…

  11. Distance Education among Adult Learners in the British Virgin Islands: A Phenomenological Study

    ERIC Educational Resources Information Center

    Flax-Archer, Allison C.

    2009-01-01

    The purpose of this phenomenological study was to discover how adult learners from the British Virgin Islands (BVI) experienced online distance learning. As the amalgamation of online distance education has become integrated in all facets of education within the past decade, learners in BVI had the opportunity to experience this alternative mode…

  12. Learner Agency

    ERIC Educational Resources Information Center

    Mick, Carola

    2011-01-01

    This article presents first results of an ethnographic research project in a Luxembourgish primary school that accompanied the development of a school project by children from the fifth grade. Analysing the data children themselves collected with Kodak Zi8 cameras in order to document their project activities, it investigates their possibilities…

  13. Lightest exoplanet yet discovered

    NASA Astrophysics Data System (ADS)

    2009-04-01

    Well-known exoplanet researcher Michel Mayor today announced the discovery of the lightest exoplanet found so far. The planet, "e", in the famous system Gliese 581, is only about twice the mass of our Earth. The team also refined the orbit of the planet Gliese 581 d, first discovered in 2007, placing it well within the habitable zone, where liquid water oceans could exist. These amazing discoveries are the outcome of more than four years of observations using the most successful low-mass-exoplanet hunter in the world, the HARPS spectrograph attached to the 3.6-metre ESO telescope at La Silla, Chile. ESO PR Photo 15a/09 Artist's impression of Gliese 581 e ESO PR Photo 15b/09 A planet in the habitable zone ESO PR Video 15a/09 ESOcast 6 ESO PR Video 15b/09 VNR A-roll ESO PR Video 15c/09 Zoom-in on Gliese 581 e ESO PR Video 15d/09 Artist's impression of Gliese 581 e ESO PR Video 15e/09 Artist's impression of Gliese 581 d ESO PR Video 15f/09 Artist's impression of Gliese 581 system ESO PR Video 15g/09 The radial velocity method ESO PR Video 15h/09 Statement in English ESO PR Video 15i/09 Statement in French ESO PR Video 15j/09 La Silla Observatory "The holy grail of current exoplanet research is the detection of a rocky, Earth-like planet in the ‘habitable zone' -- a region around the host star with the right conditions for water to be liquid on a planet's surface", says Michel Mayor from the Geneva Observatory, who led the European team to this stunning breakthrough. Planet Gliese 581 e orbits its host star - located only 20.5 light-years away in the constellation Libra ("the Scales") -- in just 3.15 days. "With only 1.9 Earth-masses, it is the least massive exoplanet ever detected and is, very likely, a rocky planet", says co-author Xavier Bonfils from Grenoble Observatory. Being so close to its host star, the planet is not in the habitable zone. But another planet in this system appears to be. From previous observations -- also obtained with the HARPS spectrograph

  14. Explore and Discover

    NASA Video Gallery

    Train to improve your aerobic and anaerobic fitness by carrying weighted objects in this activity. The Train Like an Astronaut project uses the excitement of exploration to challenge students to se...

  15. Learners in Action, Winter 2005

    ERIC Educational Resources Information Center

    Movement for Canadian Literacy, 2005

    2005-01-01

    This Winter 2005 issue of "Learners in Action" contains the following: (1) Proud Dad Turns Family Life Around (Nick Prince); (2) Learners Make a Great Impression at Conference; (3) The Story behind the Story; and (4) Learner Resources.

  16. Discover the Nile River

    ERIC Educational Resources Information Center

    Project WET Foundation, 2009

    2009-01-01

    Bordering on the Fantastic. As the longest river on earth, the Nile passes through 10 countries. Presented through a wide range of activities and a winning array of games, it's also unsurpassed at taking young minds into exploring the world of water, as well as natural and man made wonders.

  17. Discover Floods Educators Guide

    ERIC Educational Resources Information Center

    Project WET Foundation, 2009

    2009-01-01

    Now available as a Download! This valuable resource helps educators teach students about both the risks and benefits of flooding through a series of engaging, hands-on activities. Acknowledging the different roles that floods play in both natural and urban communities, the book helps young people gain a global understanding of this common--and…

  18. Bright Transients discovered by PSST

    NASA Astrophysics Data System (ADS)

    Smith, K. W.; Wright, D.; Smartt, S. J.; Huber, M.; Chambers, K. C.; Flewelling, H.; Willman, M.; Primak, N.; Schultz, A.; Gibson, B.; Magnier, E.; Waters, C.; Tonry, J.; Wainscoat, R. J.; Denneau, L.; Stalder, B.; Heinze, A.; Sherstyuk, A.; Foley, R. J.; Jha, S. W.; Rest, A.; Scolnic, D.

    2016-04-01

    Seven bright transients have been discovered as part of the Pan-STARRS Survey for Transients (PSST). Information on all objects discovered by the Pan-STARRS Survey for Transients is available at http://star.pst.qub.ac.uk/ps1threepi/ (see Huber et al. ATel #7153).

  19. Bright Transients discovered by PSST

    NASA Astrophysics Data System (ADS)

    Smith, K. W.; Wright, D.; Smartt, S. J.; Huber, M.; Chambers, K. C.; Flewelling, H.; Willman, M.; Primak, N.; Schultz, A.; Gibson, B.; Magnier, E.; Waters, C.; Tonry, J.; Wainscoat, R. J.; Foley, R. J.; Jha, S. W.; Rest, A.; Scolnic, D.

    2016-03-01

    Seven bright transients have been discovered as part of the Pan-STARRS Survey for Transients (PSST). Information on all objects discovered by the Pan-STARRS Survey for Transients is available at http://star.pst.qub.ac.uk/ps1threepi/ (see Huber et al. ATel #7153).

  20. Bright Transients discovered by PSST

    NASA Astrophysics Data System (ADS)

    Smith, K. W.; Wright, D.; Smartt, S. J.; Young, D. R.; Huber, M.; Chambers, K. C.; Flewelling, H.; Willman, M.; Primak, N.; Schultz, A.; Gibson, B.; Magnier, E.; Waters, C.; Tonry, J.; Wainscoat, R. J.; Foley, R. J.; Jha, S. W.; Rest, A.; Scolnic, D.

    2016-08-01

    Six bright transients have been discovered as part of the Pan-STARRS Survey for Transients (PSST). Information on all objects discovered by the Pan-STARRS Survey for Transients is available at http://star.pst.qub.ac.uk/ps1threepi/ (see Huber et al. ATel #7153).

  1. Two Transients discovered by PSST

    NASA Astrophysics Data System (ADS)

    Smith, K. W.; Wright, D.; Smartt, S. J.; Young, D. R.; Huber, M.; Chambers, K. C.; Flewelling, H.; Willman, M.; Primak, N.; Schultz, A.; Gibson, B.; Magnier, E.; Waters, C.; Tonry, J.; Wainscoat, R. J.; Foley, R. J.; Jha, S. W.; Rest, A.; Scolnic, D.

    2016-08-01

    Two transients have been discovered as part of the Pan-STARRS Survey for Transients (PSST). Information on all objects discovered by the Pan-STARRS Survey for Transients is available at http://star.pst.qub.ac.uk/ps1threepi/ (see Huber et al. ATel #7153).

  2. Grading Exceptional Learners

    ERIC Educational Resources Information Center

    Jung, Lee Ann; Guskey, Thomas R.

    2010-01-01

    Teachers often grapple with the challenge of giving report card grades to students with learning disabilities and English language learners. The authors offer a five-step model that "offers a fair, accurate, and legal way to adapt the grading process for exceptional learners." The model begins with a high-quality reporting system for all students…

  3. A Learner Centered Education.

    ERIC Educational Resources Information Center

    Ballard, Florence N.

    This paper proposes a learner-centered educational system, focusing on aspects that are intrinsically associated with the modern educational system, such as the curriculum, school community, parents, learners, and educational support personnel. It examines: primary level preparation (literacy, numeracy, and basic knowledge; examination and…

  4. The Lifelong Learner.

    ERIC Educational Resources Information Center

    Gross, Ronald

    Designed to provide a general guide and stimuli for lifelong learning, this book examines all the positive factors of independent study. Lifelong learning is defined as self-directed growth free from the traditional schooling procedures. Chapters discuss the following: the lifelong learner; profiles of such learners in action; how to be…

  5. Learners' Perceptions on the Use of Blogs for EFL Learning

    ERIC Educational Resources Information Center

    Wu, Hui-Ju; Wu, Pai-Lu

    2011-01-01

    This study attempted to discover learners' perceptions on the use of blogs for EFL (English as a foreign language) learning. Participants were 49 first-year university students from Southern Taiwan and were divided into ten groups in the study. Students in a group read the articles posted in the teacher's blog and collaboratively wrote group…

  6. Case Study: Learner Physiotherapists' Perceptions of Clinical Education.

    ERIC Educational Resources Information Center

    Harris, Duncan; Naylor, Sandra

    1992-01-01

    Describes a study conducted in the United Kingdom to discover what processes learner physiotherapists experience in clinical education and whether their experience is comparable to that of other students in medical professions. The need for feedback is addressed, and the role of the clinical educator is discussed. A form for student assessment is…

  7. The Writing Development of English Language Learners from Two Grades

    ERIC Educational Resources Information Center

    Zheng, Xun

    2012-01-01

    The current study is a qualitative case study that investigated the writing development of seven Chinese-speaking English language learners (ELLs) from kindergarten and 3rd-grade ESL classes in an elementary school in the Midwest and intended to discover the factors that affect students' English writing development in a one-year period.…

  8. Digimarc Discover on Google Glass

    NASA Astrophysics Data System (ADS)

    Rogers, Eliot; Rodriguez, Tony; Lord, John; Alattar, Adnan

    2015-03-01

    This paper reports on the implementation of the Digimarc® Discover platform on Google Glass, enabling the reading of a watermark embedded in a printed material or audio. The embedded watermark typically contains a unique code that identifies the containing media or object and a synchronization signal that allows the watermark to be read robustly. The Digimarc Discover smartphone application can read the watermark from a small portion of printed image presented at any orientation or reasonable distance. Likewise, Discover can read the recently introduced Digimarc Barcode to identify and manage consumer packaged goods in the retail channel. The Digimarc Barcode has several advantages over the traditional barcode and is expected to save the retail industry millions of dollars when deployed at scale. Discover can also read an audio watermark from ambient audio captured using a microphone. The Digimarc Discover platform has been widely deployed on the iPad, iPhone and many Android-based devices, but it has not yet been implemented on a head-worn wearable device, such as Google Glass. Implementing Discover on Google Glass is a challenging task due to the current hardware and software limitations of the device. This paper identifies the challenges encountered in porting Discover to the Google Glass and reports on the solutions created to deliver a prototype implementation.

  9. Learner-Centered Teaching Techniques in Astronomy 101

    NASA Astrophysics Data System (ADS)

    Jones, L. V.; Marschall, L. A.; Prather, E.

    2003-12-01

    We present preliminary results of studies done on learner-centered teaching techniques with students in Astronomy 101. Results for two classes taught at Gettysburg College this fall will be presented. One class used learner-centered activities, the other did not. A diagnostic survey was given to both classes before and after. Specific newly designed activities were tested as well.

  10. Learner-Content-Interface as an Approach for Self-Reliant and Student-Centered Learning

    ERIC Educational Resources Information Center

    Nicolay, Robin; Schwennigcke, Bastian; Sahl, Sarah; Martens, Alke

    2015-01-01

    Conceptualization and implementation of computer supported teaching and training is currently not tailored to the paradigm of learner centration. Many technical solutions lack transparency and consistency regarding the supported learner activities. An insight into learners activities correlated to learning tasks is needed. In this paper we outline…

  11. Giddy up & Go: Discovering Horses Activities. Level 1. 4-H Skills for Life Animal Series. National 4-H Curriculum. BU-08053

    ERIC Educational Resources Information Center

    Neiberger-Miller, Ami

    2004-01-01

    This is the first in a series of five horse project activity guides for youth. Levels 1-3 focus on "horse-less" activities, while Levels 4 and 5 zero in on riding and horsemanship. Each guide has an achievement program to encourage youth to learn and develop life skills. This guide focuses on the introductory basics and familiarizes youth with…

  12. Beyond School Walls: What Parents Can Do to Widen the Horizons of Their Gifted Learners

    ERIC Educational Resources Information Center

    Smutny, Joan Franklin

    2014-01-01

    Parents of gifted children play a powerful role in expanding their world and helping them discover what they love. When gifted children have impassioned, open-minded, and creative family members, they are free to discover what they love and who they are as people. For gifted learners, curiosity, passion, and interest are absolute essentials.…

  13. Effects of Textual Enhancement on English as a Foreign Language Learners' Anaphor Resolution Performance and Reading Comprehension in Taiwan

    ERIC Educational Resources Information Center

    Fang, Ting

    2016-01-01

    Successful anaphor comprehension in reading is related to the explicitness of the antecedent--anaphor relation. It mirrors one of the purposes of textual enhancement (TE), which is that it raises learners' awareness of linguistic forms by enhancing the salience of input. Therefore, learners notice the enhanced form and discover the rule or…

  14. Schoolyard Inquiry for English Language Learners

    ERIC Educational Resources Information Center

    Westervelt, Miriam

    2007-01-01

    This article presents outdoor inquiry activities to help English Language Learner (ELL) students learn life science concepts. As a public high school ELL science teacher, the author of this article use these place-based and scaffolded inquiry activities outside to reinforce concepts she teaches in the classroom all year long. Through inductive…

  15. Factors Driving Learner Success in Online Professional Development

    ERIC Educational Resources Information Center

    Vu, Phu; Cao, Vien; Vu, Lan; Cepero, Jude

    2014-01-01

    This study examined factors that contributed to the success of online learners in an online professional development course. Research instruments included an online survey and learners' activity logs in an online professional development course for 512 in-service teachers. The findings showed that there were several factors affecting online…

  16. Practices and Prospects of Learner Autonomy: Teachers' Perceptions

    ERIC Educational Resources Information Center

    Al Asmari, AbdulRahman

    2013-01-01

    Language learning process works through the learners' own reflection on how they learn and it makes learners active in the sense that they learn to analyze their learning strategies. So they start making decisions, e.g., whether to improve them or not, and in which way. Generally, this trait is missing in traditional language teaching process and…

  17. A Novel High-Throughput 3D Screening System for EMT Inhibitors: A Pilot Screening Discovered the EMT Inhibitory Activity of CDK2 Inhibitor SU9516

    PubMed Central

    Eguchi, Takanori; Rahman, M. Mamunur; Sakamoto, Ruriko; Masuda, Norio; Nakatsura, Tetsuya; Calderwood, Stuart K.; Kozaki, Ken-ichi; Itoh, Manabu

    2016-01-01

    Epithelial-mesenchymal transition (EMT) is a crucial pathological event in cancer, particularly in tumor cell budding and metastasis. Therefore, control of EMT can represent a novel therapeutic strategy in cancer. Here, we introduce an innovative three-dimensional (3D) high-throughput screening (HTS) system that leads to an identification of EMT inhibitors. For the establishment of the novel 3D-HTS system, we chose NanoCulture Plates (NCP) that provided a gel-free micro-patterned scaffold for cells and were independent of other spheroid formation systems using soft-agar. In the NCP-based 3D cell culture system, A549 lung cancer cells migrated, gathered, and then formed multiple spheroids within 7 days. Live cell imaging experiments showed that an established EMT-inducer TGF-β promoted peripheral cells around the core of spheroids to acquire mesenchymal spindle shapes, loss of intercellular adhesion, and migration from the spheroids. Along with such morphological change, EMT-related gene expression signatures were altered, particularly alteration of mRNA levels of ECAD/CDH1, NCAD/CDH2, VIM and ZEB1/TCF8. These EMT-related phenotypic changes were blocked by SB431542, a TGF-βreceptor I (TGFβR1) inhibitor. Inside of the spheroids were highly hypoxic; in contrast, spheroid-derived peripheral migrating cells were normoxic, revealed by visualization and quantification using Hypoxia Probe. Thus, TGF-β-triggered EMT caused spheroid hypoplasia and loss of hypoxia. Spheroid EMT inhibitory (SEMTIN) activity of SB431542 was calculated from fluorescence intensities of the Hypoxia Probe, and then was utilized in a drug screening of EMT-inhibitory small molecule compounds. In a pilot screening, 9 of 1,330 compounds were above the thresholds of the SEMTIN activity and cell viability. Finally, two compounds SB-525334 and SU9516 showed SEMTIN activities in a dose dependent manner. SB-525334 was a known TGFβR1 inhibitor. SU9516 was a cyclin-dependent kinase 2 (CDK2) inhibitor

  18. A Novel High-Throughput 3D Screening System for EMT Inhibitors: A Pilot Screening Discovered the EMT Inhibitory Activity of CDK2 Inhibitor SU9516.

    PubMed

    Arai, Kazuya; Eguchi, Takanori; Rahman, M Mamunur; Sakamoto, Ruriko; Masuda, Norio; Nakatsura, Tetsuya; Calderwood, Stuart K; Kozaki, Ken-Ichi; Itoh, Manabu

    2016-01-01

    Epithelial-mesenchymal transition (EMT) is a crucial pathological event in cancer, particularly in tumor cell budding and metastasis. Therefore, control of EMT can represent a novel therapeutic strategy in cancer. Here, we introduce an innovative three-dimensional (3D) high-throughput screening (HTS) system that leads to an identification of EMT inhibitors. For the establishment of the novel 3D-HTS system, we chose NanoCulture Plates (NCP) that provided a gel-free micro-patterned scaffold for cells and were independent of other spheroid formation systems using soft-agar. In the NCP-based 3D cell culture system, A549 lung cancer cells migrated, gathered, and then formed multiple spheroids within 7 days. Live cell imaging experiments showed that an established EMT-inducer TGF-β promoted peripheral cells around the core of spheroids to acquire mesenchymal spindle shapes, loss of intercellular adhesion, and migration from the spheroids. Along with such morphological change, EMT-related gene expression signatures were altered, particularly alteration of mRNA levels of ECAD/CDH1, NCAD/CDH2, VIM and ZEB1/TCF8. These EMT-related phenotypic changes were blocked by SB431542, a TGF-βreceptor I (TGFβR1) inhibitor. Inside of the spheroids were highly hypoxic; in contrast, spheroid-derived peripheral migrating cells were normoxic, revealed by visualization and quantification using Hypoxia Probe. Thus, TGF-β-triggered EMT caused spheroid hypoplasia and loss of hypoxia. Spheroid EMT inhibitory (SEMTIN) activity of SB431542 was calculated from fluorescence intensities of the Hypoxia Probe, and then was utilized in a drug screening of EMT-inhibitory small molecule compounds. In a pilot screening, 9 of 1,330 compounds were above the thresholds of the SEMTIN activity and cell viability. Finally, two compounds SB-525334 and SU9516 showed SEMTIN activities in a dose dependent manner. SB-525334 was a known TGFβR1 inhibitor. SU9516 was a cyclin-dependent kinase 2 (CDK2) inhibitor

  19. Living Consumerism: Acting, Doing, Creating, Moving, and Discovering.

    ERIC Educational Resources Information Center

    Ahler, Nina L.; Wojak, Debora J.

    Guidelines for teaching consumer and homemaking education which emphasize actual experiences by the learner are presented. The contents of the document were chosen from learning activities and experiences which were proven successful in the classroom. The guide consists of seven sections: (1) community involvement; (2) consumer decision…

  20. Exploring Shifts in Middle School Learners' Modeling Activity While Generating Drawings, Animations, and Computational Simulations of Molecular Diffusion

    ERIC Educational Resources Information Center

    Wilkerson-Jerde, Michelle H.; Gravel, Brian E.; Macrander, Christopher A.

    2015-01-01

    Modeling and using technology are two practices of particular interest to K-12 science educators. These practices are inextricably linked among professionals, who engage in modeling activity with and across a variety of representational technologies. In this paper, we explore the practices of five sixth-grade girls as they generated models of…

  1. You Can Be in a Group and Still Not Cooperate. Collaborative Approaches and Cooperative Learning Activities for Adult Learners.

    ERIC Educational Resources Information Center

    Parma City School District, OH.

    This handbook defines and describes the benefits of both collaborative approaches and cooperative techniques. An introduction uses watercolor marbling as a metaphor for collaborative approaches and cooperative activities. Section I provides research results regarding problems of adult literacy programs, skills employers want, and Bloom's taxonomy.…

  2. Comparing Learner Community Behavior in Multiple Presentations of a Massive Open Online Course

    ERIC Educational Resources Information Center

    Gallagher, Silvia Elena; Savage, Timothy

    2015-01-01

    Massive Online Open Courses (MOOCs) can create large scale communities of learners who collaborate, interact and discuss learning materials and activities. MOOCs are often delivered multiple times with similar content to different cohorts of learners. However, research into the differences of learner communication, behavior and expectation between…

  3. The Effect of Reading on Second-Language Learners' Production in Tasks

    ERIC Educational Resources Information Center

    Collentine, Karina

    2016-01-01

    Tasks provide engaging ways to involve learners in meaningful, real-world activities with the foreign language (FL). Yet selecting classroom tasks suitable to learners' linguistic readiness is challenging, and task-based research is exploring the relationship between learners' overall abilities (e.g., reading, grammatical) and the complexity and…

  4. Learner Autonomy as a Predictor of Course Success and Final Grades in Community College Online Courses

    ERIC Educational Resources Information Center

    Yen, Cherng-Jyh; Liu, Simon

    2009-01-01

    This study employed a quantitative research design to examine the predictive relationships between: (a) learner autonomy and course success; and (b) learner autonomy and final grades in community college online courses. Learner autonomy was defined as the characteristic of an individual who exhibited intentional behavior in learning activities.…

  5. Discovering Your Place in History

    ERIC Educational Resources Information Center

    White, Carol

    2006-01-01

    The Historica Foundation of Canada has a mandate to provide or support programs and resources for the teaching of Canadian history in Canadian schools. This paper outlines how Historica discovered what was needed and the programs and resources they developed to fulfill their mandate.

  6. On R-W1 as A Diagnostic to Discover Obscured Active Galactic Nuclei in Wide-area X-Ray Surveys

    NASA Astrophysics Data System (ADS)

    LaMassa, Stephanie M.; Civano, Francesca; Brusa, Marcella; Stern, Daniel; Glikman, Eilat; Gallagher, Sarah; Urry, C. Meg; Cales, Sabrina; Cappelluti, Nico; Cardamone, Carolin; Comastri, Andrea; Farrah, Duncan; Greene, Jenny E.; Komossa, S.; Merloni, Andrea; Mroczkowski, Tony; Natarajan, Priyamvada; Richards, Gordon; Salvato, Mara; Schawinski, Kevin; Treister, Ezequiel

    2016-02-01

    Capitalizing on the all-sky coverage of WISE and the 35% and 50% sky coverage from Sloan Digital Sky Survey and Pan-STARRS, respectively, we explore the efficacy of mR (optical) - {m}3.4μ {{m}} (mid-infrared), hereafter R-W1, as a color diagnostic to identify obscured supermassive black hole accretion in wide-area X-ray surveys. We use the ˜16.5 deg2 Stripe 82 X-ray survey data as a test bed to compare R-W1 with R - K, an oft-used obscured active galactic nucleus (AGN) selection criterion, and examine where different classes of objects lie in this parameter space. Most stars follow a well-defined path in R - K versus R-W1 space. We demonstrate that optically normal galaxies hosting X-ray AGNs at redshifts 0.5\\lt z\\lt 1 can be recovered with an R-W1\\gt 4 color cut, while they typically are not selected as AGNs based on their W1-W2 colors. Additionally, different observed X-ray luminosity bins favor different regions in R-W1 parameter space: moderate-luminosity AGNs (1043 erg {{{s}}}-1\\lt {L}0.5-10{keV}\\lt {10}44 erg s-1) tend to have red colors, while the highest-luminosity AGNs ({L}0.5-10{keV}\\gt {10}45 erg s-1) have bluer colors; higher spectroscopic completeness of the Stripe 82X sample is needed to determine whether this is a selection effect or an intrinsic property. Finally, we parameterize X-ray obscuration of Stripe 82X AGNs by calculating their hardness ratios (HRs) and find no clear trends between HR and optical reddening. Our results will help inform best-effort practices in following up obscured AGN candidates in current and future wide-area, shallow X-ray surveys, including the all-sky eROSITA mission.

  7. A Novel Method for Learner Assessment Based on Learner Annotations

    ERIC Educational Resources Information Center

    Noorbehbahani, Fakhroddin; Samani, Elaheh Biglar Beigi; Jazi, Hossein Hadian

    2013-01-01

    Assessment is one of the most essential parts of any instructive learning process which aims to evaluate a learner's knowledge about learning concepts. In this work, a new method for learner assessment based on learner annotations is presented. The proposed method exploits the M-BLEU algorithm to find the most similar reference annotations…

  8. Morphological Family Size Effects in Young First and Second Language Learners: Evidence of Cross-Language Semantic Activation in Visual Word Recognition

    ERIC Educational Resources Information Center

    de Zeeuw, Marlies; Verhoeven, Ludo; Schreuder, Robert

    2012-01-01

    This study examined to what extent young second language (L2) learners showed morphological family size effects in L2 word recognition and whether the effects were grade-level related. Turkish-Dutch bilingual children (L2) and Dutch (first language, L1) children from second, fourth, and sixth grade performed a Dutch lexical decision task on words…

  9. Teaching English to Less-Able Learners.

    ERIC Educational Resources Information Center

    Gefen, Raphael

    1981-01-01

    Discusses the "less-able" student via a description of the strategies used by the good language learner. Such strategies include a positive, active, and tolerant approach to learning the language, with a willingness to practice the language. The less-able needs a constant sense of achievement to continue. (PJM)

  10. Goals, the Learner, and the Language Arts.

    ERIC Educational Resources Information Center

    Ediger, Marlow

    Teachers, principals, and supervisors need to determine the kinds of learners being taught in the school/class setting. Are pupils good by nature, bad, or neutral? Concepts held pertaining to each pupil assist in determining objectives, learning activities, and evaluation techniques. The Puritans believed that individuals were born evil or sinful.…

  11. Effective Strategies for Engaging Adult Learners

    ERIC Educational Resources Information Center

    Karge, Belinda Dunnick; Phillips, Kathleen M.; Jessee, Tammy; McCabe, Marjorie

    2011-01-01

    Innovative methods in teaching should be used in every college classroom to enhance student engagement, support any teaching environment and encourage inquiry among learners. Adults learn best by participation in relevant experiences and utilization of practical information. When adult students are active in their learning they are able to develop…

  12. Workplace Learning in Malaysia: The Learner's Perspective

    ERIC Educational Resources Information Center

    Muhamad, Mazanah; Idris, Khairuddin

    2005-01-01

    This paper offers a scenario of workplace learning as practiced in Malaysia. Based on survey research, the article describes learner profiles, learning provision and pattern. The analysis shows that Malaysians participate in formal workplace learning as part of their employment activities. Workplace learning in Malaysia is contextual, promoted by…

  13. Motivating Literacy Learners in Today's World

    ERIC Educational Resources Information Center

    Fletcher, J., Ed.; Parkhill, F., Ed.; Gillon, G., Ed.

    2010-01-01

    "Motivating Literacy Learners in Today's World" provides insights into a broad spectrum of children's literacy learning. Motivation is the key theme and the authors show how this can be achieved through reading for pleasure; in writing activities at a number of levels; and through oral language development. Chapters include: (1) Motivating…

  14. Supporting a Learner Community with Software Agents

    ERIC Educational Resources Information Center

    Taurisson, Neil; Tchounikine, Pierre

    2004-01-01

    This paper describes a multi-agent approach that aims at supporting learners involved in a collective activity. We consider pedagogical situations where students have to explicitly define the articulation of their collective work and then achieve the different tasks they have defined. Our objective is to support these students by taking some of…

  15. Fragile Identities: Exploring Learner Identity, Learner Autonomy and Motivation through Young Learners' Voices

    ERIC Educational Resources Information Center

    Lamb, Terry Eric

    2011-01-01

    Recent research in the fields of motivation and learner autonomy in language learning has begun to explore their relationships to the construct of identity. This article builds on this through the voices of a group of six learners of French or German in a secondary school in England, over a two-year period. These young learners initially reveal a…

  16. Doing Your Part To Help Your Child Become SMART (Successful, Motivated, Autonomous, Responsible, Thoughtful): Six Workshops on Parenting SMART Learners.

    ERIC Educational Resources Information Center

    Sattes, Beth; Walsh, Jackie; Hickman, Mickey

    A SMART Learner is a lifelong learner who can adapt to rapid change and who possesses characteristics associated with success in and out of school. These workshop materials to help parents help their children become SMART learners provide: information from current research and best practice; learning activities that will actively engage parents in…

  17. Teachers as Learners

    ERIC Educational Resources Information Center

    Feiman-Nemser, Sharon

    2012-01-01

    In "Teachers as Learners", a collection of landmark essays, noted teacher educator and scholar Sharon Feiman-Nemser shines a light on teacher learning. Arguing that serious and sustained teacher learning is a necessary condition for ambitious student learning, she examines closely how teachers acquire, generate, and use knowledge about teaching…

  18. The Transliterate Learner

    ERIC Educational Resources Information Center

    Bush, Gail

    2012-01-01

    Thomas et al. have defined transliteracy as "the ability to read, write and interact across a range of platforms, tools and media from signing and orality through handwriting, print, TV, radio and film, to digital social networks" (Transliteracy Research Group). The learner who is transliterate builds knowledge, communicates, and interacts across…

  19. Gender and Learner Characteristics

    ERIC Educational Resources Information Center

    Hindal, Huda; Reid, Norman; Whitehead, Rex

    2013-01-01

    It is well established that girls and boys perform differently in traditional examinations in most countries. This study looks at a sample of 754 school students in Kuwait (aged about 13) and explores how boys and girls differ in the performance in a range of tests related to learner characteristics. The fundamental question is how boys and girls…

  20. Serving the Online Learner

    ERIC Educational Resources Information Center

    Boettcher, Judith V.

    2007-01-01

    Systems and services for recruiting, advising, and support of online students have seldom been at the top of the list when planning online and distance learning programs. That is now changing: Forces pushing advising and support services into the foreground include recognition of the student learner as "customer" and the increasing expectations…

  1. of Iranian EFL Learners

    ERIC Educational Resources Information Center

    Rashidi, Nasser; Mortazavi, Fariba

    2012-01-01

    This research investigated the relationship between vocabulary learning strategies and vocabulary size of Iranian university EFL students. Participants in the present study were a total of 67 EFL learners, studying at Shiraz Azad University as senior English Translation students. The instruments utilized for data collection were three tests: A…

  2. Novice Learners in Cyberspace

    ERIC Educational Resources Information Center

    Youn, Soonkyoung

    2004-01-01

    Since the Internet was introduced in the field of Educational Technology, it has predominantly been seen as an instructional tool. A number of educational technologists point out that the Internet can be a powerful instructional tool that encourages learners to be involved in problem-solving by using a great deal of information and to enlarge and…

  3. School Learners & Libraries.

    ERIC Educational Resources Information Center

    Karlsson, Jenni, Ed.

    This document presents papers from a conference held in November 1995 in Durban, KwaZulu-Natal, convened by the Education Policy Unit (EPU) of the University of Natal as part of research concerning the provision of library-based resources for school learners. Following an introduction are two chapters: "Identifying the Inherited Problems in the…

  4. California's English Learner Students

    ERIC Educational Resources Information Center

    Hill, Laura E.

    2012-01-01

    English Learner (EL) students in California's schools are numerous and diverse, and they lag behind their native-English-speaking peers. Closing the achievement gap for EL students has been a long-standing goal for California educators, and there are some signs of success. Now that EL funding and curriculum issues are receiving a fresh level of…

  5. Libraries and Adult Learners.

    ERIC Educational Resources Information Center

    Josey, E. J., Ed.

    1982-01-01

    Of the 13 essays presented in this special issue on libraries and adult education, 8 focus on programs and services from the public library for adult learners. These essays provide information on: (1) an Education Information Centers Program (EIC) designed to complement employment skills training provided under the Comprehensive Employment and…

  6. Empowering Leaders & Learners

    ERIC Educational Resources Information Center

    Umphrey, Jan

    2013-01-01

    Trevor Greene, the 2013 MetLife/NASSP National High School Principal of the Year, empowers staff members and students to be the best teachers and learners they can be and provides the community resources to support them. In this article, Greene, principal of Toppenish High School in Washington, shares his biggest motivator as a school leader and…

  7. Learner Autonomy Revisited

    ERIC Educational Resources Information Center

    Illes, Eva

    2012-01-01

    This article explores whether the perception of learner autonomy that is promoted in language pedagogy is suitable for preparing students to perform successfully in the changed circumstances of the use of English. Recent developments, which include the growing role of English as a lingua franca and computer-mediated communication (CMC), give rise…

  8. Helping Young Hispanic Learners

    ERIC Educational Resources Information Center

    Garcia, Eugene E.; Jensen, Bryant

    2007-01-01

    Hispanics are the largest and youngest ethnic group in the United States. Moreover, young Hispanic children make up approximately 80 percent of the U.S. English language learner population. They are a heterogeneous group, born both inside and outside the United States and having origins in Mexico, Cuba, Central America, South America, and the…

  9. The Savvy Learner

    ERIC Educational Resources Information Center

    Dealtry, Richard

    2004-01-01

    This article defines the cultural nature and scale of change in learning consciousness that has to take place when the organizationally-based adult learner makes the transition from formal prescriptive learning practice to self-owned, self-directed learning. It articulates some of the learning-to-learn process models that introduce, accelerate,…

  10. Actively learning object names across ambiguous situations.

    PubMed

    Kachergis, George; Yu, Chen; Shiffrin, Richard M

    2013-01-01

    Previous research shows that people can use the co-occurrence of words and objects in ambiguous situations (i.e., containing multiple words and objects) to learn word meanings during a brief passive training period (Yu & Smith, 2007). However, learners in the world are not completely passive but can affect how their environment is structured by moving their heads, eyes, and even objects. These actions can indicate attention to a language teacher, who may then be more likely to name the attended objects. Using a novel active learning paradigm in which learners choose which four objects they would like to see named on each successive trial, this study asks whether active learning is superior to passive learning in a cross-situational word learning context. Finding that learners perform better in active learning, we investigate the strategies and discover that most learners use immediate repetition to disambiguate pairings. Unexpectedly, we find that learners who repeat only one pair per trial--an easy way to infer this pair-perform worse than those who repeat multiple pairs per trial. Using a working memory extension to an associative model of word learning with uncertainty and familiarity biases, we investigate individual differences that correlate with these assorted strategies. PMID:23335580

  11. Flupirtine, a re-discovered drug, revisited.

    PubMed

    Szelenyi, Istvan

    2013-03-01

    Flupirtine was developed long before K(V)7 (KCNQ) channels were known. However, it was clear from the beginning that flupirtine is neither an opioid nor a nonsteroidal anti-inflammatory analgesic. Its unique muscle relaxing activity was discovered by serendipity. In the meantime, broad and intensive research has resulted in a partial clarification of its mode of action. Flupirtine is the first therapeutically used K(V)7 channel activator with additional GABA(A)ergic mechanisms and thus the first representative of a novel class of analgesics. The presently accepted main mode of its action, potassium K(V)7 (KCNQ) channel activation, opens a series of further therapeutic possibilities. One of them has now been realized: its back-up compound, the bioisostere retigabine, has been approved for the treatment of epilepsy. PMID:23322112

  12. Discovering the structure of mathematical problem solving.

    PubMed

    Anderson, John R; Lee, Hee Seung; Fincham, Jon M

    2014-08-15

    The goal of this research is to discover the stages of mathematical problem solving, the factors that influence the duration of these stages, and how these stages are related to the learning of a new mathematical competence. Using a combination of multivariate pattern analysis (MVPA) and hidden Markov models (HMM), we found that participants went through 5 major phases in solving a class of problems: A Define Phase where they identified the problem to be solved, an Encode Phase where they encoded the needed information, a Compute Phase where they performed the necessary arithmetic calculations, a Transform Phase where they performed any mathematical transformations, and a Respond Phase where they entered an answer. The Define Phase is characterized by activity in visual attention and default network regions, the Encode Phase by activity in visual regions, the Compute Phase by activity in regions active in mathematical tasks, the Transform Phase by activity in mathematical and response regions, and the Respond phase by activity in motor regions. The duration of the Compute and Transform Phases were the only ones that varied with condition. Two features distinguished the mastery trials on which participants came to understand a new problem type. First, the duration of late phases of the problem solution increased. Second, there was increased activation in the rostrolateral prefrontal cortex (RLPFC) and angular gyrus (AG), regions associated with metacognition. This indicates the importance of reflection to successful learning. PMID:24746954

  13. Discovering the structure of mathematical problem solving.

    PubMed

    Anderson, John R; Lee, Hee Seung; Fincham, Jon M

    2014-08-15

    The goal of this research is to discover the stages of mathematical problem solving, the factors that influence the duration of these stages, and how these stages are related to the learning of a new mathematical competence. Using a combination of multivariate pattern analysis (MVPA) and hidden Markov models (HMM), we found that participants went through 5 major phases in solving a class of problems: A Define Phase where they identified the problem to be solved, an Encode Phase where they encoded the needed information, a Compute Phase where they performed the necessary arithmetic calculations, a Transform Phase where they performed any mathematical transformations, and a Respond Phase where they entered an answer. The Define Phase is characterized by activity in visual attention and default network regions, the Encode Phase by activity in visual regions, the Compute Phase by activity in regions active in mathematical tasks, the Transform Phase by activity in mathematical and response regions, and the Respond phase by activity in motor regions. The duration of the Compute and Transform Phases were the only ones that varied with condition. Two features distinguished the mastery trials on which participants came to understand a new problem type. First, the duration of late phases of the problem solution increased. Second, there was increased activation in the rostrolateral prefrontal cortex (RLPFC) and angular gyrus (AG), regions associated with metacognition. This indicates the importance of reflection to successful learning.

  14. The Universe for all to discover

    NASA Astrophysics Data System (ADS)

    Ortiz-Gil, A.; Ballesteros, F.; Espinós, H.; Fernández-Soto, A.; Lanzara, M.; Moya, M. J.; Navarro, J.

    2015-05-01

    In the title of this paper, we have changed the slogan of the International Year of Astronomy, ``The Universe yours to discover" to ``The Universe for all to discover" in order to emphasize the need to think about broader audiences when we plan astronomical activities at school or during outreach events. The strategy we propose follows what is known as the Universal Design for Learning (UDL). UDL allows to reach to the general public as well as to audiences which might be regarded as ``special" because they have some disability. It has been shown that everybody has a preferred style of learning (some remember better what they see, others what they hear or what they touch) and therefore, everybody is more or less able under the different styles of learning. Through this talk I am going to outline some of the principles of the UDL that can be applied in the teaching and communication of Astronomy, along with an example of its implementation in the project ``A Touch of the Universe".

  15. Discovering the Ancient Temperate Rainforest.

    ERIC Educational Resources Information Center

    Lindsay, Anne

    1997-01-01

    Two activities for grades 3 through 8 explore species adaptation and forestry issues in the North American rainforests. In one activity, students create imaginary species of plants or animals that are adapted for life in an ancient temperate rainforest. In the second activity, students role play groups affected by plans to log an area of the…

  16. Temperate Lakes Discovered on Titan

    NASA Astrophysics Data System (ADS)

    Vixie, Graham; Barnes, Jason W.; Jackson, Brian; Wilson, Paul

    2012-04-01

    We have discovered two temperate lakes on Titan using Cassini's Visual and Infrared Mapping Spectrometer (VIMS). Three key features help to identify these surface features as lakes: morphology, albedo, and specular reflection. The presence of lakes at the mid-latitudes mean liquid can accumulate and remain stable outside of the poles. We first identify a lake surface by looking for possible shorelines with a lacustrine morphology. Then, we apply a simple atmospheric correction that produces an approximate surface albedo. Next, we prepare cylindrical projection maps of the brightness of the sky as seen from any points on the surface to identify specular reflections. Our techniques can then be applied to other areas, such as Arrakis Planitia, to test for liquid. Currently, all the known lakes on Titan are concentrated at the poles. Lakes have been suggested in the tropic zone by Griffith et al. Our discovery of non-transient, temperate lakes has important implications for Titan's hydrologic cycle. Clouds have been recorded accumulating in the mid-latitudes and areas have been darkened by rainfall but later brightened after evaporation (Turtle et al. 2011). Stable temperate lakes would affect total rainfall, liquid accumulation, evaporation rates, and infiltration. Polaznik Macula (Figure 1) is a great candidate for lake filling, evaporation rates, and stability. References: Griffith, C., et al.: "Evidence for Lakes on Titan's Tropical Surface". AAS/Division for Planetary Sciences Meeting Abstracts #42, Vol. 42, pp. 1077, 2010. Turtle, E. P., et al.: "Rapid and Extensive Surface Changes Near Titan's Equator: Evidence of April Showers". Science, Vol. 331, pp. 1414-, 2011. Figure 1: Polaznik Macula is the large, dark area central to the figure. The encircled dark blue areas represent positively identified lake regions in the T66 flyby. The light blue areas represent lake candidates still under analysis. The green circle marks a non-lake surface feature enclosed by a

  17. Glowing Hot Transiting Exoplanet Discovered

    NASA Astrophysics Data System (ADS)

    2003-04-01

    VLT Spectra Indicate Shortest-Known-Period Planet Orbiting OGLE-TR-3 Summary More than 100 exoplanets in orbit around stars other than the Sun have been found so far. But while their orbital periods and distances from their central stars are well known, their true masses cannot be determined with certainty, only lower limits. This fundamental limitation is inherent in the common observational method to discover exoplanets - the measurements of small and regular changes in the central star's velocity, caused by the planet's gravitational pull as it orbits the star. However, in two cases so far, it has been found that the exoplanet's orbit happens to be positioned in such a way that the planet moves in front of the stellar disk, as seen from the Earth. This "transit" event causes a small and temporary dip in the star's brightness, as the planet covers a small part of its surface, which can be observed. The additional knowledge of the spatial orientation of the planetary orbit then permits a direct determination of the planet's true mass. Now, a group of German astronomers [1] have found a third star in which a planet, somewhat larger than Jupiter, but only half as massive, moves in front of the central star every 28.5 hours . The crucial observation of this solar-type star, designated OGLE-TR-3 [2] was made with the high-dispersion UVES spectrograph on the Very Large Telescope (VLT) at the ESO Paranal Observatory (Chile). It is the exoplanet with the shortest period found so far and it is very close to the star, only 3.5 million km away. The hemisphere that faces the star must be extremely hot, about 2000 °C and the planet is obviously losing its atmosphere at high rate . PR Photo 10a/03 : The star OGLE-TR-3 . PR Photo 10b/03 : VLT UVES spectrum of OGLE-TR-3. PR Photo 10c/03 : Relation between stellar brightness and velocity (diagram). PR Photo 10d/03 : Observed velocity variation of OGLE-TR-3. PR Photo 10e/03 : Observed brightness variation of OGLE-TR-3. The search

  18. Discovering, Indexing and Interlinking Information Resources.

    PubMed

    Celli, Fabrizio; Keizer, Johannes; Jaques, Yves; Konstantopoulos, Stasinos; Vudragović, Dušan

    2015-01-01

    The social media revolution is having a dramatic effect on the world of scientific publication. Scientists now publish their research interests, theories and outcomes across numerous channels, including personal blogs and other thematic web spaces where ideas, activities and partial results are discussed. Accordingly, information systems that facilitate access to scientific literature must learn to cope with this valuable and varied data, evolving to make this research easily discoverable and available to end users. In this paper we describe the incremental process of discovering web resources in the domain of agricultural science and technology. Making use of Linked Open Data methodologies, we interlink a wide array of custom-crawled resources with the AGRIS bibliographic database in order to enrich the user experience of the AGRIS website. We also discuss the SemaGrow Stack, a query federation and data integration infrastructure used to estimate the semantic distance between crawled web resources and AGRIS. PMID:26834982

  19. Discovering Complex Ordered Phases of Block Copolymers

    NASA Astrophysics Data System (ADS)

    Shi, An-Chang

    2012-02-01

    Block copolymers with their rich phase behavior and ordering transitions have become a paradigm for the study of structured soft materials. Understanding the structures and phase transitions in block copolymers has been one of the most active research areas in polymer science in the past two decades. One of the achievements is the self-consistent field theory (SCFT), which provides a powerful framework for the study of ordered phase of block copolymers. I will present a generic strategy to discover complex ordered phases of block copolymers within the SCFT framework. Specifically, a combination of real-space and reciprocal-space techniques is used to explore possible ordered phases in multiblock copolymer melts. These candidate phases can then be used to construct phase diagrams. Application of this strategy to linear and star ABC triblock copolymers has led to the discovery of a rich array of ordered phases.

  20. Discovering, Indexing and Interlinking Information Resources

    PubMed Central

    Celli, Fabrizio; Keizer, Johannes; Jaques, Yves; Konstantopoulos, Stasinos; Vudragović, Dušan

    2015-01-01

    The social media revolution is having a dramatic effect on the world of scientific publication. Scientists now publish their research interests, theories and outcomes across numerous channels, including personal blogs and other thematic web spaces where ideas, activities and partial results are discussed. Accordingly, information systems that facilitate access to scientific literature must learn to cope with this valuable and varied data, evolving to make this research easily discoverable and available to end users. In this paper we describe the incremental process of discovering web resources in the domain of agricultural science and technology. Making use of Linked Open Data methodologies, we interlink a wide array of custom-crawled resources with the AGRIS bibliographic database in order to enrich the user experience of the AGRIS website. We also discuss the SemaGrow Stack, a query federation and data integration infrastructure used to estimate the semantic distance between crawled web resources and AGRIS. PMID:26834982

  1. Discovering, Indexing and Interlinking Information Resources.

    PubMed

    Celli, Fabrizio; Keizer, Johannes; Jaques, Yves; Konstantopoulos, Stasinos; Vudragović, Dušan

    2015-01-01

    The social media revolution is having a dramatic effect on the world of scientific publication. Scientists now publish their research interests, theories and outcomes across numerous channels, including personal blogs and other thematic web spaces where ideas, activities and partial results are discussed. Accordingly, information systems that facilitate access to scientific literature must learn to cope with this valuable and varied data, evolving to make this research easily discoverable and available to end users. In this paper we describe the incremental process of discovering web resources in the domain of agricultural science and technology. Making use of Linked Open Data methodologies, we interlink a wide array of custom-crawled resources with the AGRIS bibliographic database in order to enrich the user experience of the AGRIS website. We also discuss the SemaGrow Stack, a query federation and data integration infrastructure used to estimate the semantic distance between crawled web resources and AGRIS.

  2. Grammatical Processing in Language Learners

    ERIC Educational Resources Information Center

    Clahsen, Harald; Felser, Claudia

    2006-01-01

    The ability to process the linguistic input in real time is crucial for successfully acquiring a language, and yet little is known about how language learners comprehend or produce language in real time. Against this background, we have conducted a detailed study of grammatical processing in language learners using experimental psycholinguistic…

  3. Effective Instruction for English Learners

    ERIC Educational Resources Information Center

    Calderon, Margarita; Slavin, Robert; Sanchez, Marta

    2011-01-01

    The fastest-growing student population in U.S. schools today is children of immigrants, half of whom do not speak English fluently and are thus labeled English learners. Although the federal government requires school districts to provide services to English learners, it offers states no policies to follow in identifying, assessing, placing, or…

  4. Orienting Adult Learners to College.

    ERIC Educational Resources Information Center

    Singer, Tara S.

    1993-01-01

    Describes pilot program at University of Louisville (Kentucky) which was designed to assist in orienting adult learners to the collegiate environment. Addresses special concerns of adult learners, including child care, career planning, academic support, personal support, and financial aid. Explains program development and presentation, materials,…

  5. Profiling Mobile English Language Learners

    ERIC Educational Resources Information Center

    Byrne, Jason; Diem, Robert

    2014-01-01

    The purpose of this study was to use an app-embedded survey to profile language learner demographics. A total of 3,759 EFL language learners from primarily eight L1 backgrounds (French, German, Italian, Japanese, Korean, Russian, Spanish and Thai) responded to the survey embedded within a popular English grammar app. This app has over 500,000…

  6. Iranian EFL Learners' Compliment Responses

    ERIC Educational Resources Information Center

    Allami, Hamid; Montazeri, Maryam

    2012-01-01

    The present study aimed at examining the knowledge of Iranian EFL learners in responding to compliments in English, with a focus on the variables of gender, age and educational background. The data were collected through a 24-item English Discourse Completion Task (DCT) to which 40 male and female EFL learners were asked to provide short…

  7. Assistive Software for Disabled Learners

    ERIC Educational Resources Information Center

    Clark, Sharon; Baggaley, Jon

    2004-01-01

    Previous reports in this series (#32 and 36) have discussed online software features of value to disabled learners in distance education. The current report evaluates four specific assistive software products with useful features for visually and hearing impaired learners: "ATutor", "ACollab", "Natural Voice", and "Just Vanilla". The evaluative…

  8. High Ability and Learner Characteristics

    ERIC Educational Resources Information Center

    Hindal, Huda; Reid, Norman; Whitehead, Rex

    2013-01-01

    The outstandingly able learner has been conceptualised, in terms of test and examination performance, as the learner showing superior academic performance which is markedly better than that of peers and in ways regarded as of value by wider society. In Kuwait, such superior examination performance leads to a classification regarded as being…

  9. The Generative Adolescent Mathematical Learner

    ERIC Educational Resources Information Center

    Lawler, Brian R.

    2010-01-01

    The purpose of this paper is to consider the personal epistemologies of generative adolescent mathematical learners. A generative disposition defined a learner who operated mathematically in ways that reflect an internalized authority for knowing and a constructive orientation to knowledge. Drawing upon the radical constructivist teaching…

  10. Chinese English Learners' Strategic Competence

    ERIC Educational Resources Information Center

    Wang, Dianjian; Lai, Hongling; Leslie, Michael

    2015-01-01

    The present study aims to investigate Chinese English learners' ability to use communication strategies (CSs). The subjects are put in a relatively real English referential communication setting and the analyses of the research data show that Chinese English learners, when encountering problems in foreign language (FL) communication, are…

  11. Sensitizing ESL Learners to Genre

    ERIC Educational Resources Information Center

    Swami, Jasti Appa

    2008-01-01

    This article evaluates the efficacy of explicit genre-based instruction by sensitizing the ESL learners to the concept of genre. The main questions addressed are: How does sensitizing ESL learners to the rhetorical move structure of a genre, the communicative purposes of these moves, and linguistic features that realize these moves help them to…

  12. Learner Intonation -- A Pilot Study.

    ERIC Educational Resources Information Center

    Backman, Nancy

    This study is concerned with problems in language learners' intonation of English. Ten intonation problems were found in the learner speech of two adult Spanish-speaking males: (1) range of pitch, (2) initial rise, (3) final fall, (4) rise to final stressed syllable, (5) placement of prominence, (6) final rise for questions, (7) total question…

  13. Discover a Watershed: The Everglades.

    ERIC Educational Resources Information Center

    Robinson, George B.; And Others

    This publication is designed for both classroom teachers and nonformal educators of young people in grades 6 through 12. It can provide a 6- to 8-week course of study on the watershed with students participating in activities as they are ordered in the guide, or activities may be used in any order with educators selecting those appropriate for the…

  14. Summary Frames: Language Acquisition for Special Education and English Language Learner Students

    ERIC Educational Resources Information Center

    Honnert, Alicia M.; Bozan, Sarah E.

    2005-01-01

    For most middle school-level students, summarizing main ideas can prove to be difficult, especially for those with low vocabulary and language acquisition skills. Working specifically with students who are English Language Learners (ELLs) and in a special education program, we discovered that teaching summarization as a reading strategy increased…

  15. Nurturing Young Gifted English Language Learners: A Survival Guide for Parents

    ERIC Educational Resources Information Center

    Smutny, Joan F.

    2012-01-01

    For many young gifted English Language Learners (ELLs), going to an American school is like a trip to Mars. Everything and everyone looks strange. Many ELLs feel unsure of their abilities when they discover that their proficiency in English can sometimes hinder achievement. They wonder what the other kids think of their speech, their accents,…

  16. Classroom, the "We" Space: Developing Student-Centered Practices for Second Language Learner (SLL) Students

    ERIC Educational Resources Information Center

    Rodriguez-Valls, Fernando; Ponce, Gregorio A.

    2013-01-01

    Developing teaching practices that meet the needs of Second Language Learners (SLL) calls for models of apprenticeship in which teacher candidates acquire competency on how to create learning spaces where students discover, experience and construct knowledge rather than solely practicing skills. The aforesaid argument has an implication when…

  17. Learner Contributions to Language Learning: New Directions in Research. Applied Linguistics and Language Study.

    ERIC Educational Resources Information Center

    Breen, Michael P., Ed.

    This book provides both a review of what has been discovered from earlier research and identifies trends and future directions for future research on learner contributions to language learning. The book has an introduction, a postscript, and eight chapters and includes the following: "Introduction: Conceptualization, affect, and action in…

  18. Developing Orthographic Awareness among Beginning Chinese Language Learners: Investigating the Influence of Beginning Level Textbooks

    ERIC Educational Resources Information Center

    Fan, Hui-Mei

    2010-01-01

    The present study is based on the theoretical assumptions that frequency of characters and their structural components, as well as the frequency types of structural components, are important to enable learners of Chinese as a foreign language (CFL) to discover the underlying structure of Chinese characters. In the CFL context, since reliable…

  19. Overcoming Computer Anxiety: A Three-Step Process for Adult Learners

    ERIC Educational Resources Information Center

    Sivakumaran, Thillainatarajan; Lux, Allison C.

    2011-01-01

    Many adult learners returning to school later in life have discovered that technology is heavily embedded in the learning environment. Learning both course contents and technology in unison can be a daunting task for students who feel intimidated by technology. Computer anxiety is a term that describes resistance, fear or anxieties towards…

  20. Motivation Classification and Grade Prediction for MOOCs Learners

    PubMed Central

    Xu, Bin; Yang, Dan

    2016-01-01

    While MOOCs offer educational data on a new scale, many educators find great potential of the big data including detailed activity records of every learner. A learner's behavior such as if a learner will drop out from the course can be predicted. How to provide an effective, economical, and scalable method to detect cheating on tests such as surrogate exam-taker is a challenging problem. In this paper, we present a grade predicting method that uses student activity features to predict whether a learner may get a certification if he/she takes a test. The method consists of two-step classifications: motivation classification (MC) and grade classification (GC). The MC divides all learners into three groups including certification earning, video watching, and course sampling. The GC then predicts a certification earning learner may or may not obtain a certification. Our experiment shows that the proposed method can fit the classification model at a fine scale and it is possible to find a surrogate exam-taker. PMID:26884747

  1. Motivation Classification and Grade Prediction for MOOCs Learners.

    PubMed

    Xu, Bin; Yang, Dan

    2016-01-01

    While MOOCs offer educational data on a new scale, many educators find great potential of the big data including detailed activity records of every learner. A learner's behavior such as if a learner will drop out from the course can be predicted. How to provide an effective, economical, and scalable method to detect cheating on tests such as surrogate exam-taker is a challenging problem. In this paper, we present a grade predicting method that uses student activity features to predict whether a learner may get a certification if he/she takes a test. The method consists of two-step classifications: motivation classification (MC) and grade classification (GC). The MC divides all learners into three groups including certification earning, video watching, and course sampling. The GC then predicts a certification earning learner may or may not obtain a certification. Our experiment shows that the proposed method can fit the classification model at a fine scale and it is possible to find a surrogate exam-taker.

  2. Learners' Perceptions and Attitudes: Implications for Willingness to Communicate in an L2 Classroom

    ERIC Educational Resources Information Center

    de Saint Leger, Diane; Storch, Neomy

    2009-01-01

    This paper investigates learners' perceptions of their speaking abilities, of their contributions to oral class activities (whole class and small group discussions) as well as their attitudes towards these activities, and how such perceptions and attitudes influenced the learners' willingness to communicate in the L2. The study employed a range of…

  3. Discovering Mobile Social Networks by Semantic Technologies

    NASA Astrophysics Data System (ADS)

    Jung, Jason J.; Choi, Kwang Sun; Park, Sung Hyuk

    It has been important for telecommunication companies to discover social networks from mobile subscribers. They have attempted to provide a number of recommendation services, but they realized that the services were not successful. In this chapter, we present semantic technologies for discovering social networks. The process is mainly composed of two steps; (1) profile identification and (2) context understanding. Through developing a Next generation Contents dElivery (NICE) platform, we were able to generate various services based on the discovered social networks.

  4. Ten Helpful Ideas for Teaching English to Young Learners

    ERIC Educational Resources Information Center

    Shin, Joan Kang

    2006-01-01

    This article offers ten suggestions for teaching young learners between the age of 7 and 12 based on language-teaching principles. They include supplementing activities with visuals, realia and movement; involving students in making visuals and realia; moving from activity to activity; teaching in themes; using stories and contexts familiar to…

  5. Discovering the first tyrosine kinase

    PubMed Central

    Hunter, Tony

    2015-01-01

    In the middle of the 20th century, animal tumor viruses were heralded as possible models for understanding human cancer. By the mid-1970s, the molecular basis by which tumor viruses transform cells into a malignant state was beginning to emerge as the first viral genomic sequences were reported and the proteins encoded by their transforming genes were identified and characterized. This was a time of great excitement and rapid progress. In 1978, prompted by the discovery from Ray Erikson’s group that the Rous sarcoma virus (RSV) v-Src–transforming protein had an associated protein kinase activity specific for threonine, my group at the Salk Institute set out to determine whether the polyomavirus middle T-transforming protein had a similar kinase activity. Here, I describe the experiments that led to the identification of a kinase activity associated with middle T antigen and our serendipitous discovery that this activity was specific for tyrosine in vitro, and how this in turn led to the fortuitous observation that the v-Src–associated kinase activity was also specific for tyrosine. Our finding that v-Src increased the level of phosphotyrosine in cellular proteins in RSV-transformed cells confirmed that v-Src is a tyrosine kinase and transforms cells by phosphorylating proteins on tyrosine. My colleague Bart Sefton and I reported these findings in the March issue of PNAS in 1980. Remarkably, all of the experiments in this paper were accomplished in less than one month. PMID:26130799

  6. The Beliefs of Two Expert EFL Learners

    ERIC Educational Resources Information Center

    Mercer, Sarah

    2011-01-01

    Much of the research into "expert" language learners has focused largely on their learning strategies or styles. Less attention has been paid to other expert learner characteristics, such as learner beliefs. However, the importance of learners' beliefs in guiding their behaviours and how they interpret their experiences is widely recognised. This…

  7. Preparing Learners for e-Learning.

    ERIC Educational Resources Information Center

    Piskurich, George M., Ed.

    This book presents methods business organizations and educational institutions can use to prepare their learners to become successful e-learners. "Preparing e-Learners for Self- Directed Learning" (Long) discusses self-direction as a prerequisite to e-learning and gives a list of ways to help enhance learners' self-directedness. "Identifying…

  8. Learning Difficulties in English for Rural Learners

    ERIC Educational Resources Information Center

    Singaravelu, G.

    2010-01-01

    The present study illuminates and diagnoses the learning problems of the rural learners in English Grammar at standard VI. Present study may be useful to ameliorate the rural learners for acquiring competencies in English and eliminates the problems of the learners. It paves way to the teachers to diagnose the learning hurdles of the learners and…

  9. Model Learner Outcomes for Science Education.

    ERIC Educational Resources Information Center

    Clark, Richard C.; Hessler, Edward

    This document provides curriculum planners with models of learner outcomes that can be incorporated into a science curriculum and science essential learner outcomes. The first chapter includes a list of educational system values and learner values, philosophy of education, the mission for public education, and learner goals that describe the…

  10. Learner Control: When Does It Work?

    ERIC Educational Resources Information Center

    Higginbotham-Wheat, Nancy

    This review of the literature on five learner control variables in computer-based instruction concludes that: (1) pacing left to learner control has been found ineffective because learners tend to procrastinate or to exit lessons prematurely; (2) sequence, or content flow, has been an ineffective variable left under learner control since…

  11. Curriculum Reform: Discovering the Void

    ERIC Educational Resources Information Center

    LaDuca, Anthony

    1972-01-01

    Contends that intensive activity and rapid change in curriculum reform is at an end; that areas of urban and vocational education in the reform process have been ignored; and that the level of knowledge in curriculum and instruction has not advanced. Appeals for exploratory research to establish the foundation for constructing a theory of…

  12. The "Discover" Project: Improving Assessment and Curriculum for Diverse Gifted Learners

    ERIC Educational Resources Information Center

    Maker, C. June

    2005-01-01

    C. June Maker, Professor at the University of Arizona, has developed a unique performance-based assessment in which children are observed by teams of teachers, counselors, paraprofessionals, administrators, specialists in education of the gifted and bilingual education, and local community members. The assessment, designed initially to …

  13. Combining structure-based pharmacophore modeling, virtual screening, and in silico ADMET analysis to discover novel tetrahydro-quinoline based pyruvate kinase isozyme M2 activators with antitumor activity

    PubMed Central

    Chen, Can; Wang, Ting; Wu, Fengbo; Huang, Wei; He, Gu; Ouyang, Liang; Xiang, Mingli; Peng, Cheng; Jiang, Qinglin

    2014-01-01

    Compared with normal differentiated cells, cancer cells upregulate the expression of pyruvate kinase isozyme M2 (PKM2) to support glycolytic intermediates for anabolic processes, including the synthesis of nucleic acids, amino acids, and lipids. In this study, a combination of the structure-based pharmacophore modeling and a hybrid protocol of virtual screening methods comprised of pharmacophore model-based virtual screening, docking-based virtual screening, and in silico ADMET (absorption, distribution, metabolism, excretion and toxicity) analysis were used to retrieve novel PKM2 activators from commercially available chemical databases. Tetrahydroquinoline derivatives were identified as potential scaffolds of PKM2 activators. Thus, the hybrid virtual screening approach was applied to screen the focused tetrahydroquinoline derivatives embedded in the ZINC database. Six hit compounds were selected from the final hits and experimental studies were then performed. Compound 8 displayed a potent inhibitory effect on human lung cancer cells. Following treatment with Compound 8, cell viability, apoptosis, and reactive oxygen species (ROS) production were examined in A549 cells. Finally, we evaluated the effects of Compound 8 on mice xenograft tumor models in vivo. These results may provide important information for further research on novel PKM2 activators as antitumor agents. PMID:25214764

  14. Scientists Discover Sugar in Space

    NASA Astrophysics Data System (ADS)

    2000-06-01

    . Glycolaldehyde is a simpler molecular cousin to table sugar, the scientists say. The sugar molecule was detected in a large cloud of gas and dust some 26,000 light-years away, near the center of our Galaxy. Such clouds, often many light-years across, are the material from which new stars are formed. Though very rarified by Earth standards, these interstellar clouds are the sites of complex chemical reactions that occur over hundreds of thousands or millions of years. So far, about 120 different molecules have been discovered in these clouds. Most of these molecules contain a small number of atoms, and only a few molecules with eight or more atoms have been found in interstellar clouds. The 12 Meter Telescope "Finding glycolaldehyde in one of these interstellar clouds means that such molecules can be formed even in very rarified conditions," said Hollis. "We don't yet understand how it could be formed there," he added. "A combination of more astronomical observations and theoretical chemistry work will be required to resolve the mystery of how this molecule is formed in space." "We hope this discovery inspires renewed efforts to find even more kinds of molecules, so that, with a better idea of the total picture, we may be able to deduce the details of the prebiotic chemistry taking place in interstellar clouds," Hollis said. The discovery was made by detecting faint radio emission from the sugar molecules in the interstellar cloud. Molecules rotate end-for-end, and as they change from one rotational energy state to another, they emit radio waves at precise frequencies. The "family" of radio frequencies emitted by a particular molecule forms a unique "fingerprint" that scientists can use to identify that molecule. The scientists identified glycolaldehyde by detecting six frequencies of radio emission in what is termed the millimeter-wavelength region of the electromagnetic spectrum -- a region between more-familiar microwaves and infrared radiation. The NRAO 12 Meter Telescope

  15. Probable Bright Supernovae discovered by PSST

    NASA Astrophysics Data System (ADS)

    Smith, K. W.; Wright, D.; Smartt, S. J.; Huber, M.; Chambers, K. C.; Flewelling, H.; Willman, M.; Primak, N.; Schultz, A.; Gibson, B.; Magnier, E.; Waters, C.; Tonry, J.; Wainscoat, R. J.; Foley, R. J.; Jha, S. W.; Rest, A.; Scolnic, D.

    2016-01-01

    Three bright transients, which are probable supernovae, have been discovered as part of the Pan-STARRS Survey for Transients (PSST). Information on all objects discovered by the Pan-STARRS Survey for Transients is available at http://star.pst.qub.ac.uk/ps1threepi/ (see Huber et al. ATel #7153).

  16. Possible Nearby Transient discovered by PSST

    NASA Astrophysics Data System (ADS)

    Wright, D.; Smith, K. W.; Smartt, S. J.; Huber, M.; Chambers, K. C.; Flewelling, H.; Willman, M.; Primak, N.; Schultz, A.; Gibson, B.; Magnier, E.; Waters, C.; Tonry, J.; Wainscoat, R. J.; Foley, R. J.; Jha, S. W.; Rest, A.; Scolnic, D.

    2016-01-01

    A transient, which is a possible nearby supernova, has been discovered as part of the Pan-STARRS Survey for Transients (PSST). Information on all objects discovered by the Pan-STARRS Survey for Transients is available at http://star.pst.qub.ac.uk/ps1threepi/ (see Huber et al. ATel #7153).

  17. Probable Bright Supernova discovered by PSST

    NASA Astrophysics Data System (ADS)

    Smith, K. W.; Wright, D.; Smartt, S. J.; Young, D. R.; Huber, M.; Chambers, K. C.; Flewelling, H.; Willman, M.; Primak, N.; Schultz, A.; Gibson, B.; Magnier, E.; Waters, C.; Tonry, J.; Wainscoat, R. J.; Foley, R. J.; Jha, S. W.; Rest, A.; Scolnic, D.

    2016-09-01

    A bright transient, which is a probable supernova, has been discovered as part of the Pan-STARRS Survey for Transients (PSST). Information on all objects discovered by the Pan-STARRS Survey for Transients is available at http://star.pst.qub.ac.uk/ps1threepi/ (see Huber et al. ATel #7153).

  18. Words, Words, Words: Helping Students Discover the Power of Language

    ERIC Educational Resources Information Center

    Perrin, Robert

    2007-01-01

    Robert Perrin emphasizes the active and playful power that can be discovered from specificity of language. Students observe the impact carefully chosen words have in their daily lives by examining names of products and colors used for particular contexts and audiences, as well as names given to inventions, highlighting the vibrancy of…

  19. The Good Second Language Learner

    ERIC Educational Resources Information Center

    Naiman, N.; And Others

    1975-01-01

    Reports on a research study designed to find out more about the successful second language learner. By means of interviews, a list of the learning strategies of good language students was developed. (PMP)

  20. Chinese English Learners' Strategic Competence.

    PubMed

    Wang, Dianjian; Lai, Hongling; Leslie, Michael

    2015-12-01

    The present study aims to investigate Chinese English learners' ability to use communication strategies (CSs). The subjects are put in a relatively real English referential communication setting and the analyses of the research data show that Chinese English learners, when encountering problems in foreign language (FL) communication, are characterized by the frequent use of substitution, approximation, circumlocution, literal translation, exemplification, word-coinage, repetition, and the infrequent use of cultural-knowledge and paralinguistic CSs. The rare use of paralinguistic strategies is found to be typical of Chinese English learners. The high frequency of literal translation, one first language (L1)-based strategy in our study sample, suggests that FL learners' use of L1-based CSs may depend more upon the developmental stage of their target language than the typology distance between L1 and the target language. The frequency of repetition reveals one fact that the Chinese English learners lack variety and flexibility in their use of CSs. Based on these findings, it was indicated that learners' use of CSs is influenced by a variety of factors, among which the development stage of their interlanguage and their cultural background are identified as two important factors. Some implications are finally suggested for the English foreign language teaching practice in China. PMID:25134668

  1. Chinese English Learners' Strategic Competence.

    PubMed

    Wang, Dianjian; Lai, Hongling; Leslie, Michael

    2015-12-01

    The present study aims to investigate Chinese English learners' ability to use communication strategies (CSs). The subjects are put in a relatively real English referential communication setting and the analyses of the research data show that Chinese English learners, when encountering problems in foreign language (FL) communication, are characterized by the frequent use of substitution, approximation, circumlocution, literal translation, exemplification, word-coinage, repetition, and the infrequent use of cultural-knowledge and paralinguistic CSs. The rare use of paralinguistic strategies is found to be typical of Chinese English learners. The high frequency of literal translation, one first language (L1)-based strategy in our study sample, suggests that FL learners' use of L1-based CSs may depend more upon the developmental stage of their target language than the typology distance between L1 and the target language. The frequency of repetition reveals one fact that the Chinese English learners lack variety and flexibility in their use of CSs. Based on these findings, it was indicated that learners' use of CSs is influenced by a variety of factors, among which the development stage of their interlanguage and their cultural background are identified as two important factors. Some implications are finally suggested for the English foreign language teaching practice in China.

  2. The Relationship between Reading Proficiency and Reading Strategy Use: A Study of Adult ESL Learners

    ERIC Educational Resources Information Center

    Huang, Jiuhan; Nisbet, Deanna

    2014-01-01

    This article explores the relationship between reading strategy use and reading proficiency among 121 adult ESL learners. Reading strategy use was measured by the SORS, and reading proficiency was determined by the CASAS Reading Test and BEST Literacy Test. Findings of the study reveal that (a) adult ESL learners are active strategies users; (b)…

  3. Toward a Unified Modeling of Learner's Growth Process and Flow Theory

    ERIC Educational Resources Information Center

    Challco, Geiser C.; Andrade, Fernando R. H.; Borges, Simone S.; Bittencourt, Ig I.; Isotani, Seiji

    2016-01-01

    Flow is the affective state in which a learner is so engaged and involved in an activity that nothing else seems to matter. In this sense, to help students in the skill development and knowledge acquisition (referred to as learners' growth process) under optimal conditions, the instructional designers should create learning scenarios that favor…

  4. Language-Related Computer Use: Focus on Young L2 English Learners in Sweden

    ERIC Educational Resources Information Center

    Sundqvist, Pia; Sylvén, Liss Kerstin

    2014-01-01

    This paper presents findings from a study investigating young English language learners (YELLs) in Sweden in 4th grade (N = 76, aged 10-11). Data were collected with the help of a questionnaire and a one-week language diary. The main purpose was to examine the learners' L2 English language-related activities outside of school in general, and…

  5. A Critical Analysis of Learner Participation in Virtual Worlds: How Can Virtual Worlds Inform Our Pedagogy?

    ERIC Educational Resources Information Center

    Panichi, Luisa

    2015-01-01

    This paper reports on an exploratory case study of learner participation within the context of online language learning in virtual world platforms. Data for this investigation was collected through a case study of a Business English course within a qualitative Case-Study Research framework. This study examines learner activity in virtual worlds in…

  6. The Interplay between Language, Gestures, Dragging and Diagrams in Bilingual Learners' Mathematical Communications

    ERIC Educational Resources Information Center

    Ng, Oi-Lam

    2016-01-01

    This paper discusses the importance of considering bilingual learners' non-linguistic forms of communication for understanding their mathematical thinking. In particular, I provide a detailed analysis of communication involving a pair of high school bilingual learners during an exploratory activity where a touchscreen-based dynamic geometry…

  7. Effectiveness of a Learner-Directed Model for e-Learning

    ERIC Educational Resources Information Center

    Lee, Stella; Barker, Trevor; Kumar, Vivekanandan Suresh

    2016-01-01

    It is a hard task to strike a balance between extents of control a learner exercises and the amount of guidance, active or passive, afforded by the learning environment to guide, support, and motivate the learner. Adaptive systems strive to find the right balance in a spectrum that spans between self-control and system-guidance. They also concern…

  8. Learner Agency and the Use of Affordances in Language-Exchange Interactions

    ERIC Educational Resources Information Center

    Ahn, Tae youn

    2016-01-01

    Language exchange refers to a learning partnership between two learners with different native languages who collaborate to help each other improve their proficiency in the other's language. The purpose of this study is to examine the ways in which language-exchange participants activate learner agency to construct opportunities for learning in…

  9. A Multi-Perspective Investigation into Learners' Interaction in Asynchronous Computer-Mediated Communication (CMC)

    ERIC Educational Resources Information Center

    Çardak, Çigdem Suzan

    2016-01-01

    This article focusses on graduate level students' interactions during asynchronous CMC activities of an online course about the teaching profession in Turkey. The instructor of the course designed and facilitated a semester-long asynchronous CMC on forum discussions, and investigated the interaction of learners in multiple perspectives: learners'…

  10. Choosing to Interact: Exploring the Relationship between Learner Personality, Attitudes, and Tutorial Dialogue Participation

    ERIC Educational Resources Information Center

    Ezen-Can, Aysu; Boyer, Kristy Elizabeth

    2015-01-01

    The tremendous effectiveness of intelligent tutoring systems is due in large part to their interactivity. However, when learners are free to choose the extent to which they interact with a tutoring system, not all learners do so actively. This paper examines a study with a natural language tutorial dialogue system for computer science, in which…

  11. "Can We Do That Again?" Engaging Learners and Developing beyond the "Wow" Factor in Science

    ERIC Educational Resources Information Center

    Astall, Chris; Bruce, Warren

    2010-01-01

    Adding Mentos to an open bottle of Diet Coke can produce a fountain of liquid and froth extending several metres high. This activity can engage a wide audience of learners in a relevant and meaningful way, provide a model for creative science teaching, and help to develop learners' attitudes towards school science as a subject. In this paper, the…

  12. Capitalising on Learner Agency and Group Work in Learning Writing in English as a Foreign Language

    ERIC Educational Resources Information Center

    Lin, Zheng

    2013-01-01

    This study investigates the roles of learner agency and group work in learning writing in English as a foreign language (EFL). Through exploratory and participatory action research, this study examines how learner agency and group work function amidst the activity system of task-based EFL writing, especially how they influence and are influenced…

  13. A Learner-led, Discussion-based Elective on Emerging Infectious Disease.

    PubMed

    Mathias, Clinton

    2015-08-25

    Objective. To implement a learner-led, discussion-based course aimed at exposing second-year pharmacy learners to the study of emerging infectious diseases from a global health perspective and to assess the role and importance of pharmacists in the management of disease outbreaks. Design. Learners examined literature pertinent to an emerging infectious disease in a 3-credit, discussion-based course and participated in peer discussion led by a designated learner. Instructional materials included journal articles, audio-visual presentations, documentaries, book chapters, movies, newspaper/magazine articles, and other materials. Learning outcomes were measured based on the ability of learners to perform critical thinking and analysis, communicate with their peers, and participate in class discussions. Assessment. The course was offered to 2 consecutive cohorts consisting of 14 and 16 learners, respectively. Overall, every learner in the first cohort achieved a final grade of A for the course. In the second cohort, the overall grade distribution consisted of grades of A, B, and C for the course. Learner evaluations indicated that the active-learning, discussion-based environment significantly enhanced interest in the topic and overall performance in the course. Conclusion. The elective course on emerging infectious diseases provided in-depth exposure to disease topics normally not encountered in the pharmacy curriculum. Learners found the material and format valuable, and the course enhanced their appreciation of infectious diseases, research methodology, critical thinking and analysis, and their roles as pharmacists. PMID:26430268

  14. A Learner-led, Discussion-based Elective on Emerging Infectious Disease

    PubMed Central

    2015-01-01

    Objective. To implement a learner-led, discussion-based course aimed at exposing second-year pharmacy learners to the study of emerging infectious diseases from a global health perspective and to assess the role and importance of pharmacists in the management of disease outbreaks. Design. Learners examined literature pertinent to an emerging infectious disease in a 3-credit, discussion-based course and participated in peer discussion led by a designated learner. Instructional materials included journal articles, audio-visual presentations, documentaries, book chapters, movies, newspaper/magazine articles, and other materials. Learning outcomes were measured based on the ability of learners to perform critical thinking and analysis, communicate with their peers, and participate in class discussions. Assessment. The course was offered to 2 consecutive cohorts consisting of 14 and 16 learners, respectively. Overall, every learner in the first cohort achieved a final grade of A for the course. In the second cohort, the overall grade distribution consisted of grades of A, B, and C for the course. Learner evaluations indicated that the active-learning, discussion-based environment significantly enhanced interest in the topic and overall performance in the course. Conclusion. The elective course on emerging infectious diseases provided in-depth exposure to disease topics normally not encountered in the pharmacy curriculum. Learners found the material and format valuable, and the course enhanced their appreciation of infectious diseases, research methodology, critical thinking and analysis, and their roles as pharmacists. PMID:26430268

  15. Learners' Satisfaction Level with Online Student Portal as a Support System in an Open and Distance eLearning Environment (ODeL)

    ERIC Educational Resources Information Center

    Secreto, Percia V.; Pamulaklakin, Rhodora L.

    2015-01-01

    Learner support in an open, distance and online learning is defined as "all activities and elements in education that respond to a known learner or group of learners, and which are designed to assist in the cognitive, affective, and systemic realms of the learning process" (Brindley, et. al, 2004). Teaching and tutoring, advising and…

  16. Kepler Discovers Its First Rocky Planet

    NASA Video Gallery

    NASA's Kepler mission confirmed the discovery of its first rocky planet, named Kepler-10b. Measuring 1.4 times the size of Earth, it is the smallest planet ever discovered outside our solar system....

  17. Did the ancient egyptians discover Algol?

    NASA Astrophysics Data System (ADS)

    Jetsu, L.; Porceddu, S.; Porceddu, S.; Lyytinen, J.; Kajatkari, P.; Markkanen, T.; Toivari-Viitala, J.

    2013-02-01

    Fabritius discovered the first variable star, Mira, in 1596. Holwarda determined the 11 months period of Mira in 1638. Montanari discovered the next variable star, Algol, in 1669. Its period, 2.867 days, was determined by Goodricke (178). Algol was associated with demon-like creatures, "Gorgon" in ancient Greek and "ghoul" in ancient Arab mythology. This indicates that its variability was discovered much before 1669 (Wilk 1996), but this mythological evidence is ambiguous (Davis 1975). For thousands of years, the Ancient Egyptian Scribes (AES) observed stars for timekeeping in a region, where there are nearly 300 clear nights a year. We discovered a significant periodicity of 2.850 days in their calendar for lucky and unlucky days dated to 1224 BC, "the Cairo Calendar". Several astrophysical and astronomical tests supported our conclusion that this was the period of Algol three millennia ago. The "ghoulish habits" of Algol could explain this 0.017 days period increase (Battersby 2012).

  18. Kepler Discovers Earth-size Planet Candidates

    NASA Video Gallery

    NASA's Kepler mission has discovered its first Earth-size planet candidates and its first candidates in the habitable zone, a region where liquid water could exist on a planet's surface. Five of th...

  19. Fermi discovers giant bubbles in Milky Way

    NASA Video Gallery

    Using data from NASA's Fermi Gamma-ray Space Telescope, scientists have recently discovered a gigantic, mysterious structure in our galaxy. This feature looks like a pair of bubbles extending above...

  20. Discover Mathematics in the Physical World

    NASA Astrophysics Data System (ADS)

    Yang, Yan

    2011-04-01

    Playing with perspective windows generated an initial idea related to mathematics; an extended experiment with paper cards along the desk helped me to discover the geometry; reading Galileo's Sidereal Messenger allowed me to apply the geometry that I discovered to understand the magnitude of Galileo's telescope. Galileo's study of motion, like pendulum and inclined plane, deepened my (and my classmates') curiosity and fascination with his ingenious use of mathematics.

  1. Interaction of African American Learners Online: An Adult Education Perspective

    ERIC Educational Resources Information Center

    Kang, Haijun; Yang, Yang

    2016-01-01

    This study examines how various life factors and personal attributes affect African American adult learners' use of the three types of learning interaction-learner-content, learner-instructor, and learner-learner. Multivariate multiple regression analyses were used. The aggregate effect of life factors on African American adult learners' use of…

  2. Teacher Perceptions of Learner-Learner Engagement at a Cyber High School

    ERIC Educational Resources Information Center

    Borup, Jered

    2016-01-01

    Distance education has historically contained little or no learner-learner interactions. Currently the Internet allows for unprecedented levels of learner-learner interaction and has the potential to transform how students learn online. However, many courses offered online focus more on flexibility and independence than on interaction and…

  3. Study Partners Recommendation for xMOOCs Learners

    PubMed Central

    Xu, Bin; Yang, Dan

    2015-01-01

    Massive open online courses (MOOCs) provide an opportunity for people to access free courses offered by top universities in the world and therefore attracted great attention and engagement from college teachers and students. However, with contrast to large scale enrollment, the completion rate of these courses is really low. One of the reasons for students to quit learning process is problems which they face that could not be solved by discussing them with classmates. In order to keep them staying in the course, thereby further improving the completion rate, we address the task of study partner recommendation for students based on both content information and social network information. By analyzing the content of messages posted by learners in course discussion forum, we investigated the learners' behavior features to classify the learners into three groups. Then we proposed a topic model to measure learners' course knowledge awareness. Finally, a social network was constructed based on their activities in the course forum, and the relationship in the network was then employed to recommend study partners for target learner combined with their behavior features and course knowledge awareness. The experiment results show that our method achieves better performance than recommending method only based on content information. PMID:25663836

  4. Study Partners Recommendation for xMOOCs learners.

    PubMed

    Xu, Bin; Yang, Dan

    2015-01-01

    Massive open online courses (MOOCs) provide an opportunity for people to access free courses offered by top universities in the world and therefore attracted great attention and engagement from college teachers and students. However, with contrast to large scale enrollment, the completion rate of these courses is really low. One of the reasons for students to quit learning process is problems which they face that could not be solved by discussing them with classmates. In order to keep them staying in the course, thereby further improving the completion rate, we address the task of study partner recommendation for students based on both content information and social network information. By analyzing the content of messages posted by learners in course discussion forum, we investigated the learners' behavior features to classify the learners into three groups. Then we proposed a topic model to measure learners' course knowledge awareness. Finally, a social network was constructed based on their activities in the course forum, and the relationship in the network was then employed to recommend study partners for target learner combined with their behavior features and course knowledge awareness. The experiment results show that our method achieves better performance than recommending method only based on content information.

  5. Program Characteristics that Predict Improved Learner Outcomes

    PubMed Central

    Patterson, Margaret Becker; Mellard, Daryl

    2011-01-01

    This study identifies adult education program characteristics that predict improved learner outcomes through statistical analyses of data across four years in a single state. Data indicate that, collectively, several predictors contribute to our understanding of learner outcomes, including (a) learner entry level, (b) size of community, (c) staff qualifications, and (d) learner exposure to high quality services. A surprising finding was the lack of robust outcome predictors that maintain consistency from one year to another. PMID:22348153

  6. THE MOST LUMINOUS GALAXIES DISCOVERED BY WISE

    SciTech Connect

    Tsai, Chao-Wei; Eisenhardt, Peter R. M.; Stern, Daniel; Moustakas, Leonidas A.; Wu, Jingwen; Wright, Edward L.; Assef, Roberto J.; Blain, Andrew W.; Bridge, Carrie R.; Sayers, Jack; Benford, Dominic J.; Leisawitz, David T.; Cutri, Roc M.; Masci, Frank J.; Yan, Lin; Griffith, Roger L.; Jarrett, Thomas H.; Lonsdale, Carol J.; Petty, Sara M.; Stanford, S. Adam; and others

    2015-06-01

    We present 20 Wide-field Infrared Survey Explorer (WISE)-selected galaxies with bolometric luminosities L{sub bol} > 10{sup 14} L{sub ☉}, including five with infrared luminosities L{sub IR} ≡ L{sub (rest} {sub 8–1000} {sub μm)} > 10{sup 14} L{sub ☉}. These “extremely luminous infrared galaxies,” or ELIRGs, were discovered using the “W1W2-dropout” selection criteria which requires marginal or non-detections at 3.4 and 4.6 μm (W1 and W2, respectively) but strong detections at 12 and 22 μm in the WISE survey. Their spectral energy distributions are dominated by emission at rest-frame 4–10 μm, suggesting that hot dust with T{sub d} ∼ 450 K is responsible for the high luminosities. These galaxies are likely powered by highly obscured active galactic nuclei (AGNs), and there is no evidence suggesting these systems are beamed or lensed. We compare this WISE-selected sample with 116 optically selected quasars that reach the same L{sub bol} level, corresponding to the most luminous unobscured quasars in the literature. We find that the rest-frame 5.8 and 7.8 μm luminosities of the WISE-selected ELIRGs can be 30%–80% higher than that of the unobscured quasars. The existence of AGNs with L{sub bol} > 10{sup 14} L{sub ☉} at z > 3 suggests that these supermassive black holes are born with large mass, or have very rapid mass assembly. For black hole seed masses ∼10{sup 3} M{sub ☉}, either sustained super-Eddington accretion is needed, or the radiative efficiency must be <15%, implying a black hole with slow spin, possibly due to chaotic accretion.

  7. How does self-efficacy affect performance of learner?

    PubMed

    Vakani, Farhan; Sheerani, Mughis; Afzal, Azam; Amin, Almas

    2012-01-01

    All types of attribution based on which learners make their judgement (i.e., self efficacy), about academic success or failure or about a specific task usually affect their performance and their capabilities to deal with different realities. It is perhaps the most distinctive capability of self-reflection. Many of the cognitive theorists have defined it as a meta-cognitive capability. This judgement influence learners choose what to do, how much effort to be invested in the activity, how long to carry the phase of disappointment, and whether to approach the task anxiously or with assurance.

  8. "On Cloud Nine" and "On All Fours": Which Is More Transparent? Elements in EFL Learners' Transparency Assumptions

    ERIC Educational Resources Information Center

    Lin, Crystal Jia-yi

    2015-01-01

    Idiom transparency refers to how speakers think the meaning of the individual words contributes to the figurative meaning of an idiom as a whole (Gibbs, Nayak, & Cutting, 1989). However, it is not clear how speakers or language learners form their assumptions about an idiom's transparency level. This study set out to discover whether there are…

  9. The Adult Learner: Some Things We Know

    ERIC Educational Resources Information Center

    Fogarty, Robin J.; Pete, Brian M.

    2007-01-01

    This book addresses the "warrior" who rises to the challenge of teaching the adult learner. The discussion is designed as a catalyst for dialogue about the adult learner and to uncover the complexities of teaching this rare and riveting species. This book is organized around three interlocking themes: some things we know about the adult learner;…

  10. Corrective Feedback and Learner Uptake in CALL

    ERIC Educational Resources Information Center

    Heift, Trude

    2004-01-01

    This paper describes a study in which we investigated the effects of corrective feedback on learner uptake in CALL. Learner uptake is here defined as learner responses to corrective feedback in which, in case of an error, students attempt to correct their mistake(s). 177 students from three Canadian universities participated in the study during…

  11. Learner-Content, Learner-Instructor, and Learner-Learner Interaction in a Web-Enhanced, Internet Videoconference AP Calculus Course

    ERIC Educational Resources Information Center

    Einfeld, Dana Hobbs

    2014-01-01

    The purpose of this action research was to investigate how the use of technology promotes interaction to foster high school students' mathematical understanding. This mixed method study is guided by social-constructivist theory (Vygotsky, 1978) and framed within Moore's (1989) model of learner-content, learner-instructor, and learner-learner…

  12. An Open Learner Model for Trainee Pilots

    ERIC Educational Resources Information Center

    Gakhal, Inderdip; Bull, Susan

    2008-01-01

    This paper investigates the potential for simple open learner models for highly motivated, independent learners, using the example of trainee pilots. In particular we consider whether such users access their learner model to help them identify their current knowledge level, areas of difficulty and specific misconceptions, to help them plan their…

  13. Appropriateness and the Foreign-Language Learner.

    ERIC Educational Resources Information Center

    Gannon, Roger E.

    1980-01-01

    The attitude of the target-language community toward the foreign language learner has been overlooked in language teaching. The teacher should consider the native speaker's attitude toward the language learner's command of the language, whether the native speaker views the learner's proficiency as an intrusion, and whether situations dictate…

  14. Adult Learner Characteristics and Instructional Objectives.

    ERIC Educational Resources Information Center

    Etter, David Campbell George

    Using 40 male and 40 female part time learners with an average age of 36.6, this program planning study explored relationships between selected learner characteristics and behaviorally stated cognitive instructional objectives (IOs). Variables included age, sex, socioeconomic status, verbal ability, and a measure of learners' goals or learning…

  15. Factors Influencing Chinese Language Learners' Strategy Use

    ERIC Educational Resources Information Center

    Sung, Ko-Yin

    2011-01-01

    This survey study, which involved 134 language learners enrolled in first-year Chinese as a foreign language classrooms in the US universities, intended to address the research question, "Do learners' strategy use differ based on the following learner differences: (1) gender; (2) home language/culture; and (3) number of other foreign languages…

  16. Continuing Education in Chemical Dependency Focuses on Adult Learners

    ERIC Educational Resources Information Center

    Devens, Don L.

    1977-01-01

    In 1974, a private junior college initiated a continuing education program in chemical dependency (alcohol and drug abuse). The program is based on the concept that adult learners are responsible to plan, develop, implement, and evaluate their own learning activities in consultation with the instructor. (Author)

  17. Collaborative Revision in L2 Writing: Learners' Reflections

    ERIC Educational Resources Information Center

    Memari Hanjani, Alireza

    2016-01-01

    L2 learning literature has reflected on the problems surrounding the application of teacher written feedback and peer feedback in EFL contexts. To address the disadvantages of these feedback forms, this exploratory case study examined EFL learners' reactions to a collaborative revision activity. Interview data were collected from eight native…

  18. Does a Community of Learners Foster Self-Regulated Learning?

    ERIC Educational Resources Information Center

    Beishuizen, Jos

    2008-01-01

    Although self-regulated learning is considered as a characteristic of individual students, the question may be raised as to whether a community of learners with its emphasis on inquiry learning in teams of students provides an appropriate environment to acquire and develop active and dynamic self-regulation strategies. Two cases of communities of…

  19. Language Development for English Language Learners. Facilitator's Guide

    ERIC Educational Resources Information Center

    Rivera, Mabel O.; Moughamian, Ani; Francis, David J.

    2009-01-01

    This Facilitator's Guide has been prepared for presenters of the "Language Development for English Language Learners" professional development module. It accompanies the 67-slide PowerPoint presentation with speaker's notes and contains materials to help prepare for a professional development session, including activity instructions, handouts,…

  20. Adapting a Social Studies Lesson to Include English Language Learners

    ERIC Educational Resources Information Center

    Pappamihiel, N. Eleni; Lake, Vickie E.; Rice, Diana C.

    2005-01-01

    If one were to search for classroom strategies for English Language Learners (ELLs), it would not take much time to find many different types of activities that are all useful with ELLs. Additionally, if one were to search for social studies strategies to use with native English speakers, he or she would have little difficulty in finding a variety…

  1. Shared Pedagogical Understandings: Schoolwide Inclusion Practices Supporting Learner Needs

    ERIC Educational Resources Information Center

    Abawi, Lindy; Oliver, Mark

    2013-01-01

    Educational perspectives that recommend inclusion of children with special needs into mainstream classrooms remain a controversial topic. The Melbourne Declaration declares that all young Australians should be supported to become successful learners; confident and creative individuals; and active and informed citizens. So the question remains how…

  2. Motivation and Interlanguage Pragmatics in Iranian English Language Learners

    ERIC Educational Resources Information Center

    Khorshidi, Hassan Rasouli; Nimchahi, Abdolreza Bagherzadeh

    2013-01-01

    It is generally believed that interlanguage pragmatics and motivation play important roles in learning. Motivation is important because it determines the extent of the learner's active involvement and attitude toward learning. The major purpose of this study was to investigate the impact of integrative and instrumental motivation on the…

  3. Boosting Language Skills of English Learners through Dramatization and Movement

    ERIC Educational Resources Information Center

    Greenfader, Christa Mulker; Brouillette, Liane

    2013-01-01

    This article presents an arts integration program that uses drama and dance to promote foundational literacy skills, with an emphasis on the oral development of English Language Learners (ELLs). Previous research indicates that arts activities afford a beneficial opportunity for young students to practice language skills, but many teachers have…

  4. A Problem Solving Strategy for Gifted Learners in South Africa.

    ERIC Educational Resources Information Center

    van der Horst, Helen v R.

    2000-01-01

    A strategy of problem solving in the teaching of gifted learners is explored as a possible way of differentiating the curriculum in order to optimize learning. The Teaching Actively in a Social Context Model (TASC) and Renzulli's Enrichment Triad Model are cited as valuable teaching-learning programs. (Contains references.) (Author/CR)

  5. Using Your Daily Newspaper to Teach Math to Slow Learners.

    ERIC Educational Resources Information Center

    Loo, Mee Quai P.

    One of a series prepared by the Hawaii Newspaper Agency, this teaching guide offers ideas on using the daily newspaper to teach mathematics to slow learners. Classroom activities include teaching students how to shop for bargains through newspaper advertisements, how to compute batting averages in baseball, how to write a check after adding up the…

  6. Regulatory RNAs discovered in unexpected places.

    PubMed

    Pek, Jun Wei; Okamura, Katsutomo

    2015-01-01

    Recent studies have discovered both small and long noncoding RNAs (ncRNAs) encoded in unexpected places. These ncRNA genes were surprises at the time of their discovery, but many quickly became well-accepted families of functional regulatory RNA species. Even after years of extensive gene annotation studies using high-throughput sequencing technologies, new types of ncRNA genes continue to be discovered in unexpected places. We highlight ncRNAs that have atypical structures and that are encoded in what are generally considered 'junk' sequences, such as spacers and introns. We also discuss current bottlenecks in the approaches for identifying novel ncRNAs and the possibility that many remain to be discovered. PMID:26424536

  7. Swahili Learners' Reference Grammar. African Language Learners' Reference Grammar Series.

    ERIC Educational Resources Information Center

    Thompson, Katrina Daly; Schleicher, Antonia Folarin

    This reference grammar is written for speakers of English who are learning Swahili. Because many language learners are not familiar with the grammatical terminology, this book explains the basic terminology and concepts of English grammar that are necessary for understanding the grammar of Swahili. It assumes no formal knowledge of English grammar…

  8. Educating Young Children: Active Learning Practices for Preschool and Child Care Programs [and] A Study Guide to Educating Young Children: Exercises for Adult Learners. Second Edition.

    ERIC Educational Resources Information Center

    Hohmann, Mary; Weikart, David P.

    High/Scope preschool curriculum is a model for developing high-quality early childhood programs that encourage and support children's initiatives and active learning experiences. This revised manual for early childhood practitioners and students presents essential strategies adults can use to make active learning a reality in their programs. The…

  9. Learner Differences in Hint Processing

    ERIC Educational Resources Information Center

    Goldin, Ilya M.; Koedinger, Kenneth R.; Aleven, Vincent

    2012-01-01

    Although ITSs are supposed to adapt to differences among learners, so far, little attention has been paid to how they might adapt to differences in how students learn from help. When students study with an Intelligent Tutoring System, they may receive multiple types of help, but may not comprehend and make use of this help in the same way. To…

  10. English Learners Program Guide. Revised

    ERIC Educational Resources Information Center

    Oregon Department of Education, 2013

    2013-01-01

    This guide is designed as a reference for District and School personnel working with English learners (ELs). The content of the guide represents a compilation of information, examples, and resources. This guide is a living document and subject to frequent updates. It is recommended to review the document online rather than printing a hard copy.

  11. Learner-Centered Online Instruction

    ERIC Educational Resources Information Center

    McCombs, Barbara

    2015-01-01

    This chapter offers a theoretical rationale and an explanation of evidence for using research-validated, learner-centered principles and practices in online course development, highlighting the evidence-based practices that have been used successfully to develop online courses that engage and retain students.

  12. Options for English Language Learners

    ERIC Educational Resources Information Center

    Minaya-Rowe, Liliana

    2008-01-01

    Between 69 percent and 90 percent of English language learners (ELLs) in middle and high schools were born in the United States and have been in U.S. schools since kindergarten still have not achieved the academic proficiency to succeed in an all-English mainstream program. Various ELL program options are available for school districts to…

  13. Distance Learners: Welcome to Campus!

    ERIC Educational Resources Information Center

    Schwitzer, Alan M.; Duggan, Mary H.

    2005-01-01

    Old Dominion University's distance learning program, called TELETECHNET, brings the main-campus college experience to geographically distant learners at sites across Virginia and as far away as the state of Washington, as well as to military personnel on Navy bases, carriers, and submarines. In an interesting turnabout, the Summer Institute for…

  14. Language Learners' Perceptions of Accent

    ERIC Educational Resources Information Center

    Scales, Julie; Wennerstrom, Ann; Richard, Dara; Wu, Su Hui

    2006-01-01

    This study analyzed the accent perceptions of a group of 37 English language learners and 10 American undergraduate students. Each subject listened to a one-minute passage read by four speakers with different accents of English: General American, British English, Chinese English, and Mexican English. Participants then attempted to identify the…

  15. for Teachers of English Learners

    ERIC Educational Resources Information Center

    Molle, Daniella

    2013-01-01

    For more than a decade, the professional development literature has shown that most teachers are not adequately prepared to teach English learners (ELs)--that holds true for both specialist and mainstream teachers (see, for example, August & Hakuta, 1997; Beykont, 2002). Research that focuses on professional development for teachers of ELs,…

  16. Teaching Reading to Struggling Learners

    ERIC Educational Resources Information Center

    Minskoff, Esther

    2005-01-01

    Identifying the best way to help students who struggle with reading--whether they have learning disabilities, are English language learners, or just need extra support--is a challenge for any teacher. Schools can make that task easier with this indispensable resource, a complete guide to addressing each student's specific instructional needs and…

  17. Shifting Power to the Learner

    ERIC Educational Resources Information Center

    Wolf, Alison

    2010-01-01

    Decades of reform have resulted in a system of further education that treats adults like children, with limited control over the qualifications they choose to pursue. This needs to change. Money must follow learners, not government contracts, and so create a genuinely demand-led system. The author proposes new financial and regulatory structures…

  18. Reading and the Adult Learner.

    ERIC Educational Resources Information Center

    Johnson, Laura S., Ed.

    This monograph consists of selected International Reading Association convention and journal articles that describe reading programs for adult learners in the United States. The focus of the articles is on continuing adult education and developing advanced reading skills rather than on remedial or basic skills. Topics of selections include…

  19. English Language Learners: Annotated Bibliography

    ERIC Educational Resources Information Center

    Hector-Mason, Anestine; Bardack, Sarah

    2010-01-01

    This annotated bibliography represents a first step toward compiling a comprehensive overview of current research on issues related to English language learners (ELLs). It is intended to be a resource for researchers, policymakers, administrators, and educators who are engaged in efforts to bridge the divide between research, policy, and practice…

  20. Rich Environments for Adult Learners

    ERIC Educational Resources Information Center

    Bentham, Renee

    2008-01-01

    Unaware of the messages a bare adult learning environment sends and its effect on adult learners, a trainer attends an intensive Reggio Emilia course and learns that the physical environment is the "third teacher"--for adults as well as for children. Using principles of Reggio, she offers suggestions for enhancing adult learning spaces and…

  1. Grading Exceptional and Struggling Learners

    ERIC Educational Resources Information Center

    Jung, Lee Ann; Guskey, Thomas R.

    2011-01-01

    How can you ensure that you are grading your exceptional students fairly? Teachers receive very little guidance for grading students with disabilities, English learners, and those receiving services through a response-to-intervention (RTI) process. This practitioner-friendly book provides teachers and administrators with an effective framework for…

  2. Teacher Investment in Learner Identity

    ERIC Educational Resources Information Center

    Reeves, Jenelle

    2009-01-01

    From a sociocultural perspective, teacher identity is constructed in relation to others, including other teachers and students. Drawing on positioning theory and the concept of investment, this study analyzed the case of a secondary English teacher who negotiated his teacher identity in relation to English language learners (ELLs). Findings…

  3. Reading and the Special Learner.

    ERIC Educational Resources Information Center

    Hedley, Carolyn N., Ed.; Hicks, John S., Ed.

    Compiled from papers presented at the annual Reading/Special Education Institute at Fordham University, this collection of essays addresses reading problems of special education students. The book is divided into three sections. The first section covers reading assessment and reading intervention; section 2 addresses the specific learner and the…

  4. Facilitating Creativity in Adult Learners

    ERIC Educational Resources Information Center

    Tsai, Kuan Chen

    2013-01-01

    Creativity in education research has received increasing attention, although the major focus of this research has been on children. Despite pleas by several adult educators for promoting creativity, very few studies have focused on adult learners, leaving to it to be explored what approaches are useful for adult educators to facilitate creativity…

  5. Are Deaf Students Visual Learners?

    ERIC Educational Resources Information Center

    Marschark, Marc; Morrison, Carolyn; Lukomski, Jennifer; Borgna, Georgianna; Convertino, Carol

    2013-01-01

    It is frequently assumed that by virtue of their hearing losses, deaf students are visual learners. Deaf individuals have some visual-spatial advantages relative to hearing individuals, but most have been linked to use of sign language rather than auditory deprivation. How such cognitive differences might affect academic performance has been…

  6. Learner Perceptions of Online Interaction.

    ERIC Educational Resources Information Center

    Northrup, Pam; Lee, Russell; Burgess, Vance

    The purpose of this study was to investigate the types of interactions that students perceived to be important for online learning. The interaction attributes investigated included content interaction, conversation and collaboration, intrapersonal/metacognitive skills, and need for support. Also investigated were reasons why learners were taking…

  7. The Learner and the Computer.

    ERIC Educational Resources Information Center

    Ayers, George E.

    The revolution in computers begun in the mid 1950's will help education to meet the new challenges of the future generated by the predicted drastic declines in student enrollment and by changes in the types of learners served. Projects such as PLATO and TICCIT have proved that computers can provide useful and timely instruction for such learners…

  8. Developing Collections to Empower Learners

    ERIC Educational Resources Information Center

    Kimmel, Sue C.

    2014-01-01

    "Developing Collections to Empower Learners" examines collection development in the context of today's shifts toward digital resources while emphasizing the foundational beliefs of the school library profession. Writer Sue Kimmel includes practical advice about needs assessment, planning, selection, acquisitions, evaluation, and…

  9. Individual Learner Differences in SLA

    ERIC Educational Resources Information Center

    Arabski, Janusz; Wojtaszek, Adam

    2011-01-01

    "Individual Learner Differences in SLA" addresses the apparently insoluble conflict between the unquestionably individual character of the process of second language acquisition/foreign language learning and the institutionalised, often inflexible character of formal instruction in which it takes place. How, then, is success in SLA so prevalent?

  10. Learners' Use of Learning Objects

    ERIC Educational Resources Information Center

    Ally, Mohamed; Cleveland-Innes, Martha; Boskic, Natasha; Larwill, Sandra

    2006-01-01

    This article reports findings from a study exploring the generativity (Gibbons, Nelson, & Richards, 2000; Parrish, 2004) and discoverability (Friesen, 2001) of learning objects in the hands of the learner. Through the convergence of two separate pilot projects--the Canadian EduSource initiative through Athabasca University, and the researchers'…

  11. Did Viking discover life on Mars?

    PubMed

    Klein, H P

    1999-12-01

    A major argument in the claim that life had been discovered during the Viking mission to Mars is that the results obtained in the Labeled Release (LR) experiment are analogous to those observed with terrestrial microorganisms. This assertion is critically examined and found to be implausible.

  12. PSN in PGC938372 discovered by MASTER

    NASA Astrophysics Data System (ADS)

    Shumkov, V.; Lipunov, V.; Buckley, D.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kuznetsov, A.; Kornilov, V.; Kuvshinov, D.; Vlasenko, D.; Gress, O.; Ivanov, K.; Porosheva, T.; Podesta, R. C.; Levato, O. H.; Lopez, C.; Podestan, F.; Saffe, C.; Potter, S.

    2016-09-01

    MASTER-IAC auto-detection system( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 05h 07m 27.73s -13d 24m 16.1s on 2016-09-06.23199 UT. The OT unfiltered magnitude is 17.2m (limit 19.4m).

  13. MASTER: bright PSN discovered in Argentina

    NASA Astrophysics Data System (ADS)

    Shumkov, V.; Lipunov, V.; Podesta, R.; Levato, H.; Buckley, D.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kuznetsov, A.; Vladimirov, V.; Gress, O.; Ivanov, K.; Chazov, V.; Lopez, C.; Podesta, F.; Saffe, C.; Pogrosheva, T.; Shurpakov, S.

    2016-10-01

    MASTER-OAFA (located in Argentina) auto-detection system ( Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L ) discovered OT source at (RA, Dec) = 22h 01m 01.36s -40d 15m 26.7s on 2016-10-31.08091 UT. The OT unfiltered magnitude is 16.9m (mlim=19.9m).

  14. Discovering Diabetes Complications: an Ontology Based Model

    PubMed Central

    Daghistani, Tahani; Shammari, Riyad Al; Razzak, Muhammad Imran

    2015-01-01

    Background: Diabetes is a serious disease that spread in the world dramatically. The diabetes patient has an average of risk to experience complications. Take advantage of recorded information to build ontology as information technology solution will help to predict patients who have average of risk level with certain complication. It is helpful to search and present patient’s history regarding different risk factors. Discovering diabetes complications could be useful to prevent or delay the complications. Method: We designed ontology based model, using adult diabetes patients’ data, to discover the rules of diabetes with its complications in disease to disease relationship. Result: Various rules between different risk factors of diabetes Patients and certain complications generated. Furthermore, new complications (diseases) might be discovered as new finding of this study, discovering diabetes complications could be useful to prevent or delay the complications. Conclusion: The system can identify the patients who are suffering from certain risk factors such as high body mass index (obesity) and starting controlling and maintaining plan. PMID:26862251

  15. Pseudomonas blight discovered on raspberry in Watsonville

    Technology Transfer Automated Retrieval System (TEKTRAN)

    In the winter (February) of 2013, a field of raspberries in Watsonville was discovered to be infected with Pseudomonas syringae, the causal agent of Pseudomonas blight disease. This was the first documentation of this disease on raspberry in our region. The infection of raspberry plants is manifeste...

  16. Discovering English with the Sketch Engine

    ERIC Educational Resources Information Center

    Thomas, James

    2014-01-01

    "Discovering English with the Sketch Engine" is the title of a new book (Thomas, 2014) which introduces the use of corpora in language study, teaching, writing and translating. It focuses on using the Sketch Engine to identify patterns of normal usage in many aspects of English ranging from morphology to discourse and pragmatics. This…

  17. Discover the U.S.A.!

    ERIC Educational Resources Information Center

    Popovich, Michele

    2000-01-01

    Describes Discover the USA, an interdisciplinary unit for middle school students that uses trip-planning software and World Wide Web-based resources to teach organizational, research, writing, computer, and practical math and geography skills. Students plan a 1-month road trip in the United States, then take the trip, keeping records of routes,…

  18. Did Viking discover life on Mars?

    NASA Technical Reports Server (NTRS)

    Klein, H. P.

    1999-01-01

    A major argument in the claim that life had been discovered during the Viking mission to Mars is that the results obtained in the Labeled Release (LR) experiment are analogous to those observed with terrestrial microorganisms. This assertion is critically examined and found to be implausible.

  19. Absence of the appendix discovered during childhood.

    PubMed

    Vincent, Michelle V; Doyle, Alex; Bernstein, Sean; Jackman, Selma

    2014-01-01

    Absence of the appendix is rare. Isolated cases are usually discovered in adult patients or cadavers. We report the case of a 14 year old boy who was found to have no appendix on laparotomy for assumed acute appendicitis and use this opportunity to highlight the growing surgical uses of this vestigial structure.

  20. Discovering Integration through a Physical Phenomenon

    ERIC Educational Resources Information Center

    Burt, Derek; Magnes, Jenny; Schwarz, Gregory; Hartke, John

    2008-01-01

    This article outlines a method of conducting a laboratory designed to discover mathematical integration with students. The results are produced and verified in the laboratory by students. Understanding that an integral is defined by the area bounded by a function of x and the x-axis from a point a to a point b is challenging. Students often have…

  1. Discovering the Sequential Structure of Thought

    ERIC Educational Resources Information Center

    Anderson, John R.; Fincham, Jon M.

    2014-01-01

    Multi-voxel pattern recognition techniques combined with Hidden Markov models can be used to discover the mental states that people go through in performing a task. The combined method identifies both the mental states and how their durations vary with experimental conditions. We apply this method to a task where participants solve novel…

  2. Discover Presidential Log Cabins. Teacher's Discussion Guide.

    ERIC Educational Resources Information Center

    National Park Service (Dept. of Interior), Washington, DC.

    Discover Presidential Log Cabins is a set of materials designed to help educate 6-8 grade students about the significance of three log cabin sites occupied by George Washington, Ulysses Grant, Abraham Lincoln, and Theodore Roosevelt. This teacher's discussion guide is intended for use as part of a larger, comprehensive social studies program, and…

  3. Television: A Medium for Discovering Diversity?

    ERIC Educational Resources Information Center

    Selva, Marta; Sola, Anna

    1995-01-01

    Examines television news programs as media for discovering diversity. Discusses television as a means of information and communication, its role in the creation of public opinion, its inability to permit understanding, and the need for empirical research to assess its influence on cognitive processes. (AEF)

  4. Did Viking discover life on Mars?

    PubMed

    Klein, H P

    1999-12-01

    A major argument in the claim that life had been discovered during the Viking mission to Mars is that the results obtained in the Labeled Release (LR) experiment are analogous to those observed with terrestrial microorganisms. This assertion is critically examined and found to be implausible. PMID:10666745

  5. More than a "Basic Skill": Breaking down the Complexities of Summarizing for ABE/ESL Learners

    ERIC Educational Resources Information Center

    Ouellette-Schramm, Jennifer

    2015-01-01

    This article describes the complex cognitive and linguistic challenges of summarizing expository text at vocabulary, syntactic, and rhetorical levels. It then outlines activities to help ABE/ESL learners develop corresponding skills.

  6. Plurilingual Learners' Beliefs and Practices toward Native and Nonnative Language Mediation during Learner-Learner Interaction

    ERIC Educational Resources Information Center

    Payant, Caroline

    2015-01-01

    Due to the growing number of plurilingual learners in the world today (Hammarberg, 2010), the present multiple case study examines four plurilingual participants' beliefs toward first language (L1) and second language (L2) mediation in the acquisition of French as a third language (L3). During a 16-week classroom-based study in a French university…

  7. Beyond Classroom Discourse: Learning as Participation in Native Speaker-Learner and Learner-Learner Interactions

    ERIC Educational Resources Information Center

    Hoshi, Saori

    2015-01-01

    Consistent with the notion of learning as changing participation (Lave & Wenger, 1991; Rogoff, 1998; Sfard, 1998; Young & Miller, 2004), the present qualitative study investigated how social interaction between learners of Japanese as a foreign language and native speaker classroom guests contributed to the students' use of second language…

  8. VLA Discovers Giant Rings Around Galaxy Cluster

    NASA Astrophysics Data System (ADS)

    2006-11-01

    Astronomers using the National Science Foundation's Very Large Array (VLA) radio telescope have discovered giant, ring-like structures around a cluster of galaxies. The discovery provides tantalizing new information about how such galaxy clusters are assembled, about magnetic fields in the vast spaces between galaxy clusters, and possibly about the origin of cosmic rays. Radio-Optical Image of Cluster Galaxy Cluster Abell 3376 (Radio/Optical) CREDIT: Joydeep Bagchi, IUCAA, NRAO/AUI/NSF Above, a combined radio/optical image shows the galaxy cluster Abell 3376 in visible light (blue) and radio (red) images. The giant radio arcs surrounding the cluster were discovered using the Very Large Array. The visible-light image is from the Digitized Sky survey. Below, an X-ray image of Abell 3376 made using the European Space Agency's XMM-Newton telescope shows a spectacular, bullet-shaped region of X-rays coming from gas heated to 60 million degrees Kelvin. The bullet shape results from the supersonic collision of a smaller smaller galaxy subcluster with the main body of the larger cluster. Click on images for larger version. X-Ray Image of Cluster Galaxy Cluster Abell 3376 (X-Ray) CREDIT: Joydeep Bagchi, IUCAA, ESA "These giant, radio-emitting rings probably are the result of shock waves caused by violent collisions of smaller groups of galaxies within the cluster," said Joydeep Bagchi, of the Inter-University Centre for Astronomy and Astrophysics in Pune, India, who led an international research team. The scientists reported their findings in the November 3 edition of the journal Science. The newly-discovered ring segments, some 6 million light-years across, surround a galaxy cluster called Abell 3376, more than 600 million light-years from Earth. They were revealed because fast-moving electrons emitted radio waves as they spiraled around magnetic field lines in intergalactic space. "Even from this large distance, the feeble radio waves were easily picked up by the VLA

  9. MASTER: 2 OT discovered in Argentina

    NASA Astrophysics Data System (ADS)

    Shumkov, V.; Pogrosheva, T.; Lipunov, V.; Podesta, R.; Levato, H.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kuznetsov, A.; Vladimirov, V.; Gress, O.; Ivanov, K.; Chazov, V.; Lopez, C.; Podesta, F.; Saffe, C.

    2016-10-01

    MASTER-OAFA, located in Argentina, with auto-detection system (Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L) discovered OT source at (RA, Dec) = 03h 19m 42.92s -45d 30m 13.9s on 2016-10-27.27597 UT. The OT unfiltered magnitude is 16.9m (mlim=20.8m).

  10. What if Fleming had not discovered penicillin?

    PubMed

    Alharbi, Sulaiman Ali; Wainwright, Milton; Alahmadi, Tahani Awad; Salleeh, Hashim Bin; Faden, Asmaa A; Chinnathambi, Arunachalam

    2014-09-01

    What would have happened had Alexander Fleming not discovered penicillin in 1928? Perhaps the obvious answer is that, someone else would have discovered penicillin during 1930s and the Oxford group, would still have purified it sometime in the early 1940s. Here, however, in this counterfactual account of the penicillin story, it is argued that without Fleming, penicillin might still be undiscovered and the antibiotic age would never have dawned. As a result, many of the recent developments in medicine, such as organ transplantation, might have been delayed or, at best, made more hazardous. Penicillin might have come onto the scene a few years later but, had Fleming overlooked the discovery, it seems certain that penicillin would not have saved countless Allied lives, during and after D-Day. Instead of having enjoyed fifty and more years of the antibiotic age, it is argued here, that we would have had to rely upon highly developed sulphonamides, so-called "supasulfas", and other chemically-derived antibacterial drugs. Indeed, it might be the case that, even well into this new millennium, the antibiotic age has yet to dawn, and medicine is still waiting for someone to chance upon penicillin. Here we discuss what might have happened had Fleming not discovered penicillin and come to the conclusion that the medical armoury available today would have been far different and might have relied solely upon highly developed varieties of sulphonamides or similar, synthetic, non-antibiotic antibacterial agents. PMID:25183937

  11. What if Fleming had not discovered penicillin?

    PubMed Central

    Alharbi, Sulaiman Ali; Wainwright, Milton; Alahmadi, Tahani Awad; Salleeh, Hashim Bin; Faden, Asmaa A.; Chinnathambi, Arunachalam

    2014-01-01

    What would have happened had Alexander Fleming not discovered penicillin in 1928? Perhaps the obvious answer is that, someone else would have discovered penicillin during 1930s and the Oxford group, would still have purified it sometime in the early 1940s. Here, however, in this counterfactual account of the penicillin story, it is argued that without Fleming, penicillin might still be undiscovered and the antibiotic age would never have dawned. As a result, many of the recent developments in medicine, such as organ transplantation, might have been delayed or, at best, made more hazardous. Penicillin might have come onto the scene a few years later but, had Fleming overlooked the discovery, it seems certain that penicillin would not have saved countless Allied lives, during and after D-Day. Instead of having enjoyed fifty and more years of the antibiotic age, it is argued here, that we would have had to rely upon highly developed sulphonamides, so-called “supasulfas”, and other chemically-derived antibacterial drugs. Indeed, it might be the case that, even well into this new millennium, the antibiotic age has yet to dawn, and medicine is still waiting for someone to chance upon penicillin. Here we discuss what might have happened had Fleming not discovered penicillin and come to the conclusion that the medical armoury available today would have been far different and might have relied solely upon highly developed varieties of sulphonamides or similar, synthetic, non-antibiotic antibacterial agents. PMID:25183937

  12. What if Fleming had not discovered penicillin?

    PubMed

    Alharbi, Sulaiman Ali; Wainwright, Milton; Alahmadi, Tahani Awad; Salleeh, Hashim Bin; Faden, Asmaa A; Chinnathambi, Arunachalam

    2014-09-01

    What would have happened had Alexander Fleming not discovered penicillin in 1928? Perhaps the obvious answer is that, someone else would have discovered penicillin during 1930s and the Oxford group, would still have purified it sometime in the early 1940s. Here, however, in this counterfactual account of the penicillin story, it is argued that without Fleming, penicillin might still be undiscovered and the antibiotic age would never have dawned. As a result, many of the recent developments in medicine, such as organ transplantation, might have been delayed or, at best, made more hazardous. Penicillin might have come onto the scene a few years later but, had Fleming overlooked the discovery, it seems certain that penicillin would not have saved countless Allied lives, during and after D-Day. Instead of having enjoyed fifty and more years of the antibiotic age, it is argued here, that we would have had to rely upon highly developed sulphonamides, so-called "supasulfas", and other chemically-derived antibacterial drugs. Indeed, it might be the case that, even well into this new millennium, the antibiotic age has yet to dawn, and medicine is still waiting for someone to chance upon penicillin. Here we discuss what might have happened had Fleming not discovered penicillin and come to the conclusion that the medical armoury available today would have been far different and might have relied solely upon highly developed varieties of sulphonamides or similar, synthetic, non-antibiotic antibacterial agents.

  13. Are Deaf Students Visual Learners?

    PubMed Central

    Marschark, Marc; Morrison, Carolyn; Lukomski, Jennifer; Borgna, Georgianna; Convertino, Carol

    2013-01-01

    It is frequently assumed that by virtue of their hearing losses, deaf students are visual learners. Deaf individuals have some visual-spatial advantages relative to hearing individuals, but most have been are linked to use of sign language rather than auditory deprivation. How such cognitive differences might affect academic performance has been investigated only rarely. This study examined relations among deaf college students’ language and visual-spatial abilities, mathematics problem solving, and hearing thresholds. Results extended some previous findings and clarified others. Contrary to what might be expected, hearing students exhibited visual-spatial skills equal to or better than deaf students. Scores on a Spatial Relations task were associated with better mathematics problem solving. Relations among the several variables, however, suggested that deaf students are no more likely to be visual learners than hearing students and that their visual-spatial skill may be related more to their hearing than to sign language skills. PMID:23750095

  14. The Role of Private Speech in Cognitive Regulation of Learners: The Case of English as a Foreign Language Education

    ERIC Educational Resources Information Center

    Sarab, Mohamad Reza Anani; Gordani, Yahya

    2015-01-01

    Investigations into the use of private speech by adult English foreign language (EFL) learners in regulating their mental activities have been an interesting area of research with a sociocultural framework. Following this line of research, 30 advanced adult EFL learners were selected via the administration of Oxford quick placement test and took a…

  15. Digging Deeper into Learners' Experiences in MOOCs: Participation in Social Networks outside of MOOCs, Notetaking and Contexts Surrounding Content Consumption

    ERIC Educational Resources Information Center

    Veletsianos, George; Collier, Amy; Schneider, Emily

    2015-01-01

    Researchers describe with increasing confidence "what" they observe participants doing in massive open online courses (MOOCs). However, our understanding of learner activities in open courses is limited by researchers' extensive dependence on log file analyses and clickstream data to make inferences about learner behaviors. Further, the…

  16. Improving Critical Think Skills Through Online Synchronous Communications: A Study of Learners' Attitudes toward Building Knowledge Networks

    ERIC Educational Resources Information Center

    Kurubacak, Gulsun

    2006-01-01

    The main purpose of this study is to investigate the College learners' attitudes toward Online Synchronous Communications (OSCs) to build knowledge networks. Also, this study focuses on how to improve these learners' critical thinking skills via synchronous communicational activities. Based on the main purpose of this study and the concerns, the…

  17. Learning at a Distance through Mobile Devices: A Global Choice of Learners in the Open and Distance Learning (ODL) System

    ERIC Educational Resources Information Center

    Sethy, Satya

    2011-01-01

    In the techno-driven world, mobile learning is an indispensable element of teaching-learning activities. It helps distance learners in many ways by providing their required facilities. The paper discusses about these facilities in an eclectic and summary manner. Thus, by implication, it is popularized among distance learners across the globe.…

  18. The Wonder of Reading: The Effect of Generative Study Strategies on EFL Learners' Reading Comprehension and Recall of Short Stories

    ERIC Educational Resources Information Center

    Ghazanfari, Mohammad; Sarani, Abdullah

    2009-01-01

    EFL learners often tend to shift the major load of language learning task to the reading skill, due to insufficient access to the spoken mode of language. Experiences of practitioners as well as various research reports in the literature indicate that the more actively learners get engaged with the reading materials, the more profound their…

  19. Discovering graphical Granger causality using the truncating lasso penalty

    PubMed Central

    Shojaie, Ali; Michailidis, George

    2010-01-01

    Motivation: Components of biological systems interact with each other in order to carry out vital cell functions. Such information can be used to improve estimation and inference, and to obtain better insights into the underlying cellular mechanisms. Discovering regulatory interactions among genes is therefore an important problem in systems biology. Whole-genome expression data over time provides an opportunity to determine how the expression levels of genes are affected by changes in transcription levels of other genes, and can therefore be used to discover regulatory interactions among genes. Results: In this article, we propose a novel penalization method, called truncating lasso, for estimation of causal relationships from time-course gene expression data. The proposed penalty can correctly determine the order of the underlying time series, and improves the performance of the lasso-type estimators. Moreover, the resulting estimate provides information on the time lag between activation of transcription factors and their effects on regulated genes. We provide an efficient algorithm for estimation of model parameters, and show that the proposed method can consistently discover causal relationships in the large p, small n setting. The performance of the proposed model is evaluated favorably in simulated, as well as real, data examples. Availability: The proposed truncating lasso method is implemented in the R-package ‘grangerTlasso’ and is freely available at http://www.stat.lsa.umich.edu/∼shojaie/ Contact: shojaie@umich.edu PMID:20823316

  20. Similarities and differences in brain activation and functional connectivity in first and second language reading: evidence from Chinese learners of English.

    PubMed

    Cao, Fan; Young Kim, Say; Liu, Yanni; Liu, Li

    2014-10-01

    It has been evidenced that both similarities and differences exist in the brain network involved in second language reading in comparison to the first language reading. However, very few studies have been done to compare functional connectivity in L1 and L2 reading. Brain activation and functional connectivity during English pseudoword rhyming judgment in a group of late Chinese-English bilinguals (the CE group) were compared to a Chinese word rhyming judgment task in another group of late Chinese-English bilinguals (the CC group). Brain activation analyses revealed that the two groups engaged a similar network and that the only significant group difference was greater involvement of the right middle occipital gyrus in the CC group than in the CE group, due to greater holistic visuospatial processing of Chinese characters. English pseudowords can be read using the same network as Chinese characters, whereas psychophysiological interaction (PPI) analyses revealed different connectivity within the reading network between the two groups. Greater functional connectivity was found between three visuo-orthographic seed regions and the right precentral gyrus in the CC group, suggesting that the sensorimotor patterns of Chinese syllables are activated during Chinese word rhyming judgment. In contrast, we found greater connectivity between the three seed regions and the left postcentral gyrus in the CE group. In addition, the connectivity between one of the three seed regions (i.e. the right middle occipital gyrus) and the left postcentral gyrus was positively correlated with English proficiency in the CE group. This suggests that somatosensory feedback plays a key role in processing the foreign phonemes of English pseudowords and those highly proficient bilinguals tend to rely on this information to a greater degree. We also found that within the CE group, the connectivity between the right middle occipital gyrus and the left inferior parietal lobule was positively

  1. The Young Learner.

    ERIC Educational Resources Information Center

    Bonini, Victor

    1987-01-01

    Stresses the need for young children to understand that wild animals should not be kept for pets. Provides lesson plans for physical education, music, and science. Includes suggestions for bulletin boards and learning centers, and a clip art set with figures that are suitable for use with the activities. (TW)

  2. Modeling the effects of multicontextual physics instruction on learner expectations and understanding of force and motion systems

    NASA Astrophysics Data System (ADS)

    Deese Becht, Sara-Maria Francis

    1999-11-01

    The purpose of this study is two-fold involving both practical and theoretical modeling components. The practical component, an experiential-learning phase, investigated a study population for effects that increasing levels of multicontextual physics activities have on student understanding of Newtonian systems of motion. This contextual-learning model measured learner convictions and non-response gaps and analyzed learner response trends on context, technology, challenge, growth, and success. The theoretical component, a model-building phase, designed a dynamic-knowing model for learning along a range of experiential tasks, from low to high context, monitored for indicators of learning in science and mathematics: learner academic performance and ability, learner control and academic attitude, and a learner non- response gap. This knowing model characterized a learner's process-of-knowing on a less to more expert- like learner-response continuum using performance and perspective indices associated with level of contextual- imagery referent system. Data for the contextual-learning model were collected on 180 secondary subjects: 72 middle and 108 high, with 36 physics subjects as local experts. Subjects were randomly assigned to one of three experimental groups differing only on context level of force and motion activities. Three levels of information were presented through context-based tasks: momentum constancy as inertia, momentum change as impulse, and momentum rate of change as force. The statistical analysis used a multi-level factorial design with repeated measures and discriminate analysis of response-conviction items. Subject grouping criteria included school level, ability level in science and mathematics, gender and race. Assessment criteria used pre/post performance scores, confidence level in physics concepts held, and attitude towards science, mathematics, and technology. Learner indices were computed from logit- transforms applied to learner outcomes

  3. SNAPPS: a learner-centered model for outpatient education.

    PubMed

    Wolpaw, Terry M; Wolpaw, Daniel R; Papp, Klara K

    2003-09-01

    The unique character of medical education in the outpatient setting has created challenges in teaching and learning that cannot be solved by the adaptation of traditional inpatient approaches. Previous work and the authors' own observational study describe a relatively passive learner focused on reporting history and physical examination data to the preceptor. Based on the work of Bordage in cognitive learning, and that of Osterman and Kottkamp on reflective practice for educators, the authors have developed a collaborative model for case presentations in the outpatient setting that links learner initiation and preceptor facilitation in an active learning conversation. This learner-centered model for case presentations to the preceptor follows a mnemonic called SNAPPS consisting of six steps: (1) Summarize briefly the history and findings; (2) Narrow the differential to two or three relevant possibilities; (3) Analyze the differential by comparing and contrasting the possibilities; (4) Probe the preceptor by asking questions about uncertainties, difficulties, or alternative approaches; (5) Plan management for the patient's medical issues; and (6) Select a case-related issue for self-directed learning. The authors conducted a pilot study of SNAPPS, introducing the model to both third-year medical students and their preceptors. Feedback was enthusiastic and underscored the importance of the paired approach. SNAPPS represents a paradigm shift in ambulatory education that engages the learner and creates a collaborative learning conversation in the context of patient care. PMID:14507619

  4. Early learner perceptions of the attributes of effective preceptors.

    PubMed

    Huggett, Kathryn N; Warrier, Rugmini; Maio, Anna

    2008-12-01

    Medical education in the US has adapted to the shift of patient care from hospital to ambulatory settings by developing educational opportunities in outpatient settings. Faculty development efforts must acknowledge learners' perspectives to be effective in improving teaching and learning. Clinics provide important and unique learning opportunities, but also present different challenges for preceptors (i.e., physician teachers) and learners. Multiple studies have identified characteristics of effective preceptors of ambulatory care medicine. However, most of these studies were conducted among residents or students with clinical experience. To investigate preclinical, second-year medical students' perceptions of preceptor quality, we conducted an exploratory qualitative study using analysis of student learning journals. The purposive sample included 120 medical students in a private, Midwestern medical school in the United States. Learning journals of 110 students for two semesters were reviewed. Five attributes of an effective preceptor emerged: (1) Demonstrates professional expertise (2) Actively engages students in learning (3) Creates a positive environment for teaching and learning (4) Demonstrates collegiality and professionalism (5) Discusses career-related topics and concerns. Our findings suggest preclinical learners often begin initial clinical experiences with sophisticated definitions of professional expertise, and hold specific expectations for professionalism. These are based on previous coursework and personal experience. These expectations influence their perceptions of effective preceptors and learning experiences. Early clinical experiences can also influence perceptions about career and specialty choice. Improving our understanding of preclinical learners' perceptions of preceptor quality will improve the efficacy of faculty development efforts and learning experiences.

  5. Learning Science Using AR Book: A Preliminary Study on Visual Needs of Deaf Learners

    NASA Astrophysics Data System (ADS)

    Megat Mohd. Zainuddin, Norziha; Badioze Zaman, Halimah; Ahmad, Azlina

    Augmented Reality (AR) is a technology that is projected to have more significant role in teaching and learning, particularly in visualising abstract concepts in the learning process. AR is a technology is based on visually oriented technique. Thus, it is suitable for deaf learners since they are generally classified as visual learners. Realising the importance of visual learning style for deaf learners in learning Science, this paper reports on a preliminary study of on an ongoing research on problems faced by deaf learners in learning the topic on Microorganisms. Being visual learners, they have problems with current text books that are more text-based that graphic based. In this preliminary study, a qualitative approach using the ethnographic observational technique was used so that interaction with three deaf learners who are participants throughout this study (they are also involved actively in the design and development of the AR Book). An interview with their teacher and doctor were also conducted to identify their learning and medical problems respectively. Preliminary findings have confirmed the need to design and develop a special Augmented Reality Book called AR-Science for Deaf Learners (AR-SiD).

  6. The Attitudes of Field Dependence Learners for Learner Interface Design (LID) in e-Learning Instruction

    ERIC Educational Resources Information Center

    Sözcü, Ömer Faruk; Ipek, Ismail; Kinay, Hüseyin

    2016-01-01

    The purpose of the study is to explore relationships between learners' cognitive styles of field dependence and learner variables in the preference of learner Interface design, attitudes in e-Learning instruction and experience with e-Learning in distance education. Cognitive style has historically referred to a psychological dimension…

  7. Re-Awakening the Learner: Creating Learner-Centric, Standards-Driven Schools

    ERIC Educational Resources Information Center

    Stoll, Copper; Giddings, Gene

    2012-01-01

    Transformation of public education requires the reawakening of the sleeping giant in the room: the learners. Students, teachers, and principals must develop a learner-centric, standards-driven school. "Reawakening the Learner" is a guide to creating just such an environment. Continua describe the journey of teachers, teacher leaders, and…

  8. Recasts, Metalinguistic Feedback, and Learners' Perceptions: A Case of Persian EFL Learners

    ERIC Educational Resources Information Center

    Rassaei, Ehsan; Moinzadeh, Ahmad

    2014-01-01

    In the current study, we present the results of an experiment with 30 Persian EFL learners in which we explored the learners' perceptions of recasts and metalinguistic corrective feedback. The participant learners received either recasts or metalinguistic feedback for their errors during task-based interactions with their interlocutors and then…

  9. Learner Councils in South African Schools: Adult Involvement and Learners' Rights

    ERIC Educational Resources Information Center

    Hunt, Frances

    2014-01-01

    Each secondary school in South Africa is legally obliged to establish a representative council of learners, a democratically elected, learner-only council. This article looks at how the representative councils of learners are realised in practice in four secondary schools. Three research questions focus on the practice of representative councils…

  10. Learner Agency in Language Learning: The Story of a Distance Learner of EFL in China

    ERIC Educational Resources Information Center

    Xiao, Junhong

    2014-01-01

    Learner agency plays a key role in self-regulated learning. Yet, there is a paucity of research into its role in the distance learning context. Using reflective narratives written by a distance learner of English in China, this longitudinal case study aims to investigate the ways in which learner agency mediates the language learning in the…

  11. Promoting Learner Engagement when Working with Adult English Language Learners. CAELA Network Brief

    ERIC Educational Resources Information Center

    Miller, Susan Finn

    2010-01-01

    Teachers of adults learning English often compete with many demands on learners' attention. Concerns about family, jobs, money, and transportation; fatigue; and negative past experiences with education are some of the factors that might inhibit an adult learner's full engagement in class. In a study of learner engagement in adult literacy…

  12. Strategy-Based Instruction: A Learner-Focused Approach to Developing Learner Autonomy

    ERIC Educational Resources Information Center

    Nguyen, Le Thi Cam; Gu, Yongqi

    2013-01-01

    This study investigates the effects of strategy-based instruction (SBI) on the promotion of learner autonomy (LA). LA was conceptualized and operationally defined as learner self-initiation and learner self-regulation. An intervention study was conducted with the participation of 37 students in an experimental group, and 54 students in two control…

  13. Can Instructors Help Learners Overcome Math Anxiety?

    ERIC Educational Resources Information Center

    Preis, Christy; Biggs, Bobbie T.

    2001-01-01

    Defines math anxiety and discusses some of its sources. Suggests methods for instructors in postsecondary institutions to help learners become successful in mathematics. (Contains 33 references.) (JOW)

  14. A learner developed longitudinal interprofessional education curriculum.

    PubMed

    Fitzsimmons, Amber; Cisneros, Breanne; Samore, Jennifer

    2014-01-01

    Increased patient safety requires interprofessional collaboration, now critical given rising healthcare costs and an aging population with complex and chronic conditions. One way in which to educate future health care team members about team dynamics is to have them learn through active participation on a team. Six students representing the five health professions programs at the University of California, San Francisco formed a curriculum development team that created a novel yearlong interprofessional education curriculum and assessed its impact on knowledge, skills and attitudes of first-year learners in medicine, physical therapy, dentistry, nursing, and pharmacy (n = 480). Through their participation on the curriculum development team and reflection on their roles, responsibilities, communication and negotiation, the six students developed the inter-personal and intra-personal skills required for successful interprofessional collaboration.

  15. Candles, Corks and Contracts: Essential Relationships between Learners and Libraries.

    ERIC Educational Resources Information Center

    Burge, Elizabeth J.; Snow, Judith E.

    2000-01-01

    Current relationships between libraries and adult learners are shaped by technology adoption, learner demographics, constructivist learning, and institutional pressures. Future relationships must emphasize learner-centered action over technological efficiency, stronger learning leadership, and greater integration of libraries in educational…

  16. Discovering Functional Units in Continuous Speech

    PubMed Central

    Lim, Sung-Joo; Lacerda, Francisco; Holt, Lori L.

    2015-01-01

    Language learning requires that listeners discover acoustically variable functional units like phonetic categories and words from an unfamiliar, continuous acoustic stream. Although many category learning studies have examined how listeners learn to generalize across the acoustic variability inherent in the signals that convey the functional units of language, these studies have tended to focus upon category learning across isolated sound exemplars. However, continuous input presents many additional learning challenges that may impact category learning. Listeners may not know the timescale of the functional unit, its relative position in the continuous input, or its relationship to other evolving input regularities. Moving laboratory-based studies of isolated category exemplars toward more natural input is important to modeling language learning, but very little is known about how listeners discover categories embedded in continuous sound. In 3 experiments, adult participants heard acoustically variable sound category instances embedded in acoustically variable and unfamiliar sound streams within a video game task. This task was inherently rich in multisensory regularities with the to-be-learned categories and likely to engage procedural learning without requiring explicit categorization, segmentation, or even attention to the sounds. After 100 min of game play, participants categorized familiar sound streams in which target words were embedded and generalized this learning to novel streams as well as isolated instances of the target words. The findings demonstrate that even without a priori knowledge, listeners can discover input regularities that have the best predictive control over the environment for both non-native speech and nonspeech signals, emphasizing the generality of the learning. PMID:26010592

  17. Discovering functional units in continuous speech.

    PubMed

    Lim, Sung-Joo; Lacerda, Francisco; Holt, Lori L

    2015-08-01

    Language learning requires that listeners discover acoustically variable functional units like phonetic categories and words from an unfamiliar, continuous acoustic stream. Although many category learning studies have examined how listeners learn to generalize across the acoustic variability inherent in the signals that convey the functional units of language, these studies have tended to focus upon category learning across isolated sound exemplars. However, continuous input presents many additional learning challenges that may impact category learning. Listeners may not know the timescale of the functional unit, its relative position in the continuous input, or its relationship to other evolving input regularities. Moving laboratory-based studies of isolated category exemplars toward more natural input is important to modeling language learning, but very little is known about how listeners discover categories embedded in continuous sound. In 3 experiments, adult participants heard acoustically variable sound category instances embedded in acoustically variable and unfamiliar sound streams within a video game task. This task was inherently rich in multisensory regularities with the to-be-learned categories and likely to engage procedural learning without requiring explicit categorization, segmentation, or even attention to the sounds. After 100 min of game play, participants categorized familiar sound streams in which target words were embedded and generalized this learning to novel streams as well as isolated instances of the target words. The findings demonstrate that even without a priori knowledge, listeners can discover input regularities that have the best predictive control over the environment for both non-native speech and nonspeech signals, emphasizing the generality of the learning. PMID:26010592

  18. Discovering social groups without having relational data

    NASA Astrophysics Data System (ADS)

    Salerno, John; Zhang, Zhongfei; Lewin, Ronny; Decker, Michael

    2004-04-01

    Who is associated with whom? Who communicates with whom? When two or more individuals get together is there an intended purpose? Who are the leaders/important individuals of the group? What is the organizational structure of the group? These are just a few of the questions that are covered under the topic of social network analysis. Data mining, specifically community generation, attempts to automatically discover and learn these social models. In this paper we present one class of problems which we have called the uni-party data community generation paradigm. We discuss various applications, a methodology and results from two problem domains.

  19. Discovering Communicable Models from Earth Science Data

    NASA Technical Reports Server (NTRS)

    Schwabacher, Mark; Langley, Pat; Potter, Christopher; Klooster, Steven; Torregrosa, Alicia

    2002-01-01

    This chapter describes how we used regression rules to improve upon results previously published in the Earth science literature. In such a scientific application of machine learning, it is crucially important for the learned models to be understandable and communicable. We recount how we selected a learning algorithm to maximize communicability, and then describe two visualization techniques that we developed to aid in understanding the model by exploiting the spatial nature of the data. We also report how evaluating the learned models across time let us discover an error in the data.

  20. Discovering viroids--a personal perspective.

    PubMed

    Diener, Theodor O

    2003-10-01

    During 1970 and 1971, I discovered that a devastating disease of potato plants is not caused by a virus, as had been assumed, but by a new type of subviral pathogen, the viroid. Viroids are so small--one fiftieth of the size of the smallest viruses--that many scientists initially doubted their existence. We now know that viroids cause many damaging diseases of crop plants. Fortunately, new methods that are based on the unique properties of viroids now promise effective control. PMID:15040183

  1. Planet Imager Discovers Young Kuiper Belt

    NASA Astrophysics Data System (ADS)

    Kohler, Susanna

    2015-07-01

    A debris disk just discovered around a nearby star is the closest thing yet seen to a young version of the Kuiper belt. This disk could be a key to better understanding the interactions between debris disks and planets, as well as how our solar system evolved early on in its lifetime. Hunting for an analog The best way to understand how the Kuiper belt — home to Pluto and thousands of other remnants of early icy planet formation in our solar system — developed would be to witness a similar debris disk in an earlier stage of its life. But before now, none of the disks we've discovered have been similar to our own: the rings are typically too large, the central star too massive, or the stars exist in regions very unlike what we think our Sun's birthplace was like. A collaboration led by Thayne Currie (National Astronomical Observatory of Japan) has changed this using the Gemini Planet Imager (GPI), part of a new generation of extreme adaptive-optics systems. The team discovered a debris disk of roughly the same size as the Kuiper belt orbiting the star HD 115600, located in the nearest OB association. The star is only slightly more massive than our Sun, and it lives in a star-forming region similar to the early Sun's environment. HD 115600 is different in one key way, however: it is only 15 million years old. This means that observing it gives us the perfect opportunity to observe how our solar system might have behaved when it was much younger. A promising future GPI's spatially-resolved spectroscopy, combined with measurements of the reflectivity of the disk, have led the team to suspect that the disk might be composed partly of water ice, just as the Kuiper belt is. The disk also shows evidence of having been sculpted by the motions of giant planets orbiting the central star, in much the same way as the outer planets of our solar system may have shaped the Kuiper belt. The observations of HD 115600 are some of the very first to emerge from GPI and the new

  2. Exploring Lifelong Learners Engaged in an Astronomy-Related Massively Open Online Course

    NASA Astrophysics Data System (ADS)

    Buxner, Sanlyn; Impey, Chris David; Wenger, Matthew; Formanek, Martin; Romine, James M.

    2016-01-01

    Massively open online courses (MOOCs) are becoming increasingly popular ways to reach diverse lifelong learners all over the world. Although MOOCs resemble more formal classes (e.g. videos of content, quizzes, activities), they are often used by informal audiences from home. Recently, MOOCs have become more utilized by universities to conduct outreach as they explore how to use MOOCs to reach new potential learners. Despite the rapid adaption of MOOCs, little is known about individuals who choose to take a MOOC, how they interact with the course materials, and what motivates them to finish the course.We present results of a study of lifelong learners engaged in an astronomy "101" MOOC. Through analysis of registered learners' behaviors as well as self-reported responses to a survey about science, we were able to characterize a subset of the learners engaged in the MOOC during its first offering. Overall, 25363 learners from over 100 countries registered for the MOOC. Of those, 14900 accessed at least one part of the course. Learners were recruited to complete a survey of their knowledge and attitudes towards science. Of the learner group who opened the course, 2889 individuals completed the survey, 2465 of those were able to be linked to their usage of the MOOC through a unique identifier.Learners represented a wide-range of ages, professions, and previous science experience. The best predictors for MOOC completion were engagement in the first activity and first writing assignment and engagement in the online forum. Learners were very interested in science prior to their registration, had higher basic science knowledge that most undergraduate students enrolled in a parallel astronomy course, and used online searches and science sites to get their information about science. As we reach out to a worldwide audience to learners in these massively open online courses, understanding their motivations and behaviors will be essential. This work is helping us understand and

  3. Learner Satisfaction in Online Learning: An Analysis of the Perceived Impact of Learner-Social Media and Learner-Instructor Interaction

    ERIC Educational Resources Information Center

    Andersen, Jeffery C.

    2013-01-01

    The purpose of this study was to determine the relationships between general course satisfaction, learner-instructor interaction, and the learner-social media interaction scores of participants. This study used an online survey with 60 questions to gather the participants' demographic data, learner-instructor interaction data, learner-social…

  4. Discovering Structural Regularity in 3D Geometry

    PubMed Central

    Pauly, Mark; Mitra, Niloy J.; Wallner, Johannes; Pottmann, Helmut; Guibas, Leonidas J.

    2010-01-01

    We introduce a computational framework for discovering regular or repeated geometric structures in 3D shapes. We describe and classify possible regular structures and present an effective algorithm for detecting such repeated geometric patterns in point- or mesh-based models. Our method assumes no prior knowledge of the geometry or spatial location of the individual elements that define the pattern. Structure discovery is made possible by a careful analysis of pairwise similarity transformations that reveals prominent lattice structures in a suitable model of transformation space. We introduce an optimization method for detecting such uniform grids specifically designed to deal with outliers and missing elements. This yields a robust algorithm that successfully discovers complex regular structures amidst clutter, noise, and missing geometry. The accuracy of the extracted generating transformations is further improved using a novel simultaneous registration method in the spatial domain. We demonstrate the effectiveness of our algorithm on a variety of examples and show applications to compression, model repair, and geometry synthesis. PMID:21170292

  5. Carbon Atmosphere Discovered On Neutron Star

    NASA Astrophysics Data System (ADS)

    2009-11-01

    without pulsations would require a tiny size, consistent only with exotic stars made of strange quark matter. "Our carbon veil solves one of the big questions about the neutron star in Cas A," said Craig Heinke. "People have been willing to consider some weird explanations, so it's a relief to discover a less peculiar solution." Unlike most astronomical objects, neutron stars are small enough to understand on a human scale. For example, neutron stars typically have a diameter of about 14 miles, only slightly longer than a half-marathon. The atmosphere of a neutron star is on an even smaller scale. The researchers calculate that the carbon atmosphere is only about 4 inches thick, because it has been compressed by a surface gravity that is 100 billion times stronger than on Earth. "For people who are used to hearing about immense sizes of things in space, it might be a surprise that we can study something so small," said Ho. "It's also funny to think that such a thin veil over this star played a key role in frustrating researchers." In Earth's time frame, the estimated age of the neutron star in Cas A is only several hundred years, making it about ten times younger than other neutron stars with detected surface emission. Therefore, the Cas A neutron star gives a unique window into the early life of a cooling neutron star. The carbon itself comes from a combination of material that has fallen back after the supernova, and nuclear reactions on the hot surface of the neutron star which convert hydrogen and helium into carbon. The X-ray spectrum and lack of pulsar activity suggest that the magnetic field on the surface of this neutron star is relatively weak. Similarly low magnetic fields are implied for several other young neutron stars by study of their weak X-ray pulsations. It is not known whether these neutron stars will have low magnetic fields for their entire lives, and never become radio pulsars, or whether processes in their interior will lead to the development of

  6. Discovering Astronomy: An Astro 101 e-book

    NASA Astrophysics Data System (ADS)

    Shawl, Stephen J.; Byrd, Gene; Deustua, Susana E.; LoPresto, Michael C.

    2016-01-01

    Discovering Astronomy, now available in its 6th edition as an eText, has many advantages and features for your students. We have partnered with etextink.com and WebAssign.net to produce an affordable set of cost-saving options for your students. Also available is the Discovering Astronomy Activity Manual, which provides students with an active-learning experience.Our etext is device independent and thus accessible through any web browser. Americans with Disabilities Act compatibility provides access for all students. Hotlinks to outside sites provide further information for interested students. Lecture demonstration videos of important concepts, made specifically for this new edition, are embedded within the text as appropriate. Students can highlight text, take notes, and bookmark locations within the text. Important terms are linked to the glossary. Search capabilities allow students to easily find what they want.Instructors can interact with their students directly through the etext once the class roster has been provided. For example, instructors can embed assignments into their students' etext and add their own notes and updates, which are immediately visible to their students.Updates can be quickly made by us as new findings become available. For example, updates from New Horizons were added at the time of the closest approach to Pluto, and an update on the recent announcement of current water on Mars was added the day of the announcement.We will present results of our own experience with college and high school students' use of Discovering Astronomy in online courses.Details of the book, a sample chapter, and other information are available at discoveringastronomy.weebly.com.

  7. Channeling Children's Energy through Vocabulary Activities

    ERIC Educational Resources Information Center

    Schindler, Andrea

    2006-01-01

    In this article, the author shares vocabulary development activities for young learners. These activities channel students' energy and make learning more effective and fun. The author stresses the importance of giving young learners a good language-learning experience, and the challenges of teaching young learners who are not literate in their L1.…

  8. Pairing Learners in Pair Work Activity

    ERIC Educational Resources Information Center

    Storch, Neomy; Aldosari, Ali

    2013-01-01

    Although pair work is advocated by major theories of second language (L2) learning and research findings suggest that pair work facilitates L2 learning, what is unclear is how to best pair students in L2 classes of mixed L2 proficiency. This study investigated the nature of pair work in an English as a Foreign Language (EFL) class in a college in…

  9. Vocabulary Breadth in French L2 Learners

    ERIC Educational Resources Information Center

    David, Annabelle

    2008-01-01

    Vocabulary is one of the building blocks of language and is a necessary component of learners' development. This paper aims to describe the development of the L2 lexicon from the first year of learning French as a foreign language at school to the last year of undergraduate studies at university by setting out what learners know and how this…

  10. Attitudes of EFL Learners towards the Internet

    ERIC Educational Resources Information Center

    Aydin, Selami

    2007-01-01

    Related literature indicates that the Internet has an important role and great potential in foreign language learning. It is also obvious that attitudes of learners affect learning process significantly. This study aimed to investigate the attitudes of foreign language learners and to find the relationship between attitudes and subject variables.…

  11. Individual Differences in Learner Controlled CAI.

    ERIC Educational Resources Information Center

    Judd, Wilson A.; And Others

    Two assumptions in support of learner-controlled computer-assisted instruction (CAI) are that (1) instruction administered under learner control will be less aversive than if administered under program control, and (2) the student is sufficiently aware of his learning state to make, in most instances, his own instructional decisions. Some 130…

  12. Multidimensional Learner Model In Intelligent Learning System

    NASA Astrophysics Data System (ADS)

    Deliyska, B.; Rozeva, A.

    2009-11-01

    The learner model in an intelligent learning system (ILS) has to ensure the personalization (individualization) and the adaptability of e-learning in an online learner-centered environment. ILS is a distributed e-learning system whose modules can be independent and located in different nodes (servers) on the Web. This kind of e-learning is achieved through the resources of the Semantic Web and is designed and developed around a course, group of courses or specialty. An essential part of ILS is learner model database which contains structured data about learner profile and temporal status in the learning process of one or more courses. In the paper a learner model position in ILS is considered and a relational database is designed from learner's domain ontology. Multidimensional modeling agent for the source database is designed and resultant learner data cube is presented. Agent's modules are proposed with corresponding algorithms and procedures. Multidimensional (OLAP) analysis guidelines on the resultant learner module for designing dynamic learning strategy have been highlighted.

  13. "Harry Potter" and the English Language Learner.

    ERIC Educational Resources Information Center

    Coatney, Kathy

    2001-01-01

    Describes one teacher's success with using "Harry Potter" in a program to teach elementary school English language learners. Provides comprehension strategies incorporated to help learners understand the story. Highlights the importance of creating a classroom environment with a low level of anxiety, the implications of the program, and the value…

  14. Ontario's Old Growth: A Learner's Handbook.

    ERIC Educational Resources Information Center

    Stabb, Mark

    This handbook was written in response to an identified need for more public information on Ontario's old growth forests. It is meant to be taken into old growth stands, where the learner can see, touch, and study the natural ingredients of old growth forests. Much of the handbook is a guide to forest history, helping the learner to discover…

  15. Advanced EFL Learners' Beliefs about Pronunciation Teaching

    ERIC Educational Resources Information Center

    Alghazo, Sharif M.

    2015-01-01

    This paper explores EFL learners' beliefs about English pronunciation teaching and aims to provide insights into current teaching practices of English pronunciation at both college and university levels. To this end, the study sought to elicit the beliefs of a group of 71 third- and fourth-year EFL learners majoring in English at a university…

  16. Adult Learners, Learning and Public Libraries.

    ERIC Educational Resources Information Center

    Burge, Elizabeth J.; And Others

    1983-01-01

    Ten articles focusing on adult learning services in public libraries highlight global trends, support for intentional change, counseling and information needs of adult learners, adult learner services at Pratt Library and North York (Ontario) library, process of learning, administrative considerations, political factors, and implications for…

  17. Dealing with Disruptive Behavior of Adult Learners

    ERIC Educational Resources Information Center

    Dobmeier, Robert; Moran, Joseph

    2008-01-01

    The adult education literature on disruptive behavior of adult learners was reviewed and a survey on disruptive behavior of adult learners was conducted with adult educators. The findings are synthesized in a conceptual framework for understanding the types and causes of disruptive behavior, which fall into the categories of inattention,…

  18. Staff Development for Teaching Slow Learners

    ERIC Educational Resources Information Center

    Leff, Rhona

    2008-01-01

    If you have noticed that your teachers need more "tricks up their sleeves" for working with slow learners, you can initiate a staff-development plan for changing that. Here are some suggestions for using the time, resources, and staff that you already have to improve the teaching of slow learners.

  19. Training Learners for Self-Instruction.

    ERIC Educational Resources Information Center

    Fernandez-Toro, Maria

    This book presents practical solutions for teaching foreign language learners self instruction, ranging from needs analysis to resourcing, strategy training and monitoring tools. Special emphasis is placed on different ways in which learners can be supported by learning how to analyze their own needs and set their own goals, how to choose the most…

  20. ICT Usage by Distance Learners in India

    ERIC Educational Resources Information Center

    Awadhiya, Ashish Kumar; Gowthaman, K.

    2014-01-01

    Open Universities across the world are embracing ICT based teaching and learning process to disseminate quality education to their learners spread across the globe. In India availability and access of ICT and learner characteristics are uneven and vary from state to state. Hence it is important to establish the facts about ICT access among…

  1. A Journey toward Learner-Centered Curriculum

    ERIC Educational Resources Information Center

    Emes, Claudia; Cleveland-Innes, Martha

    2003-01-01

    In higher education, competing demands for accountability and innovation in the face of globalization, technology, and budget cuts cause us to consider how best to prepare learners who will learn for a lifetime. We contend that a shift in our understanding of curriculum design to accommodate learner-centeredness will provide the framework for…

  2. Learner Language Analytic Methods and Pedagogical Implications

    ERIC Educational Resources Information Center

    Dyson, Bronwen

    2010-01-01

    Methods for analysing interlanguage have long aimed to capture learner language in its own right. By surveying the cognitive methods of Error Analysis, Obligatory Occasion Analysis and Frequency Analysis, this paper traces reformulations to attain this goal. The paper then focuses on Emergence Analysis, which fine-tunes learner language analysis…

  3. Coping with Demotivation: EFL Learners' Remotivation Processes

    ERIC Educational Resources Information Center

    Falout, Joseph

    2012-01-01

    When foreign language education is compulsory, competitive, or coercive, how learners cope with stress can determine outcomes, including value of the subject, persistence on task, and level of proficiency. The development of adaptive or maladaptive coping processes toward situated learning goals is influenced by learners' beliefs about themselves…

  4. Successfully Applying Team Teaching with Adult Learners

    ERIC Educational Resources Information Center

    Laughlin, Kevin; Nelson, Peggy; Donaldson, Susan

    2011-01-01

    Team teaching is a great strategy to convey systems thinking to students, families, and communities and to help learners gain multiple perspectives. Learners benefit from the professional interaction among skilled instructors. This article uses a program of land stewardship to demonstrate the advantages of team teaching. Both the advantages and…

  5. Model Learner Outcomes for Home Economics Education.

    ERIC Educational Resources Information Center

    Rogers, Cheryl, Ed.; And Others

    Chapter 1 of this document contains sets of statements adopted by either the Minnesota State Board of Education or the Minnesota State Legislature. They represent the hierarchy used by Department of Education staff as they develop model learner outcomes for each subject area. Contents include learner values, education system values, philosophy for…

  6. Pairing the Adult Learner and Boutique Wineries

    ERIC Educational Resources Information Center

    Holyoke, Laura; Heath-Simpson, Delta

    2013-01-01

    This study explored connections between adult learners and their experiences in the context of small boutique wineries operating in the start-up phase of the organizational life cycle. The research objective was to gain insight regarding the pairing of adult learners with the entering of a specialty industry. Fourteen individuals from four…

  7. Adult Language Learners: Context and Innovation

    ERIC Educational Resources Information Center

    Smith, Ann F. V., Ed.; Strong, Gregory, Ed.

    2009-01-01

    "Adult Language Learners: Context and Innovation" presents instructional practices that are particularly successful with adults. Adult language learners are goal oriented and direct their learning to fulfill particular needs or demands: to advance their studies, to progress up the career ladder, to follow business opportunities, to pass a driving…

  8. The Adult Learner: From a Narrative Perspective

    ERIC Educational Resources Information Center

    Barnett, Jennifer A.

    2013-01-01

    Each year there seems to be an increase in the number of mature students enrolled in my Bachelor of Education (BEd) classes. These mature learners experience stress. As there is a need to better comprehend the experiences of the adult learner enrolled in a one-year intensive tertiary education programme, I enrolled in university as a student, and…

  9. Profiles of English Learners (ELs). Fast Facts

    ERIC Educational Resources Information Center

    Office of English Language Acquisition, US Department of Education, 2015

    2015-01-01

    The Office of English Language Acquisition (OELA) has synthesized key data on English learners (ELs) into two-page PDF sheets, by topic, with graphics, plus key contacts. The topics for this report on profiles of English Learners (ELs) include: (1) Percentage of Total School Population, Grades Pre-K through 12, Represented by ELs, by State,…

  10. English Learners (ELs) and NAEP. Fast Facts

    ERIC Educational Resources Information Center

    Office of English Language Acquisition, US Department of Education, 2015

    2015-01-01

    The Office of English Language Acquisition (OELA) has synthesized key data on English learners (ELs) into two-page PDF sheets, by topic, with graphics, plus key contacts. The topics for this report on English Learners (ELs) and NAEP include: (1) 2013 Reading Scores for Grades 4, 8, and 12: ELs vs. Non-ELs; (2) 2013 Mathematics Scores for Grades 4,…

  11. Collaborative Learning amongst Distance Learners of Mathematics

    ERIC Educational Resources Information Center

    Philip, Kurien; Mitra, Sugata

    2012-01-01

    This paper describes the effects of collaborative support on groups of distance learners of General Certificate of Secondary Education mathematics. Two experiments are described. In each case, learners were provided with teleconferencing with peers, experts and mentors in addition to structured study materials. No improvements were noticed in…

  12. Learner Views about a Distance Education Course

    ERIC Educational Resources Information Center

    Durak, Gurhan; Ataizi, Murat

    2016-01-01

    The purpose of the study was to investigate the views of learners experienced in the Distance Learning Platform (DLP), which was prepared according to an online course design model. The participants of the study were 19 learners who took the programming languages course (via the DLP for 14 weeks). Before the application, the preparation of the DLP…

  13. A Critical Realist Orientation to Learner Needs

    ERIC Educational Resources Information Center

    Ayers, David F.

    2011-01-01

    The objective of this essay is to propose critical realism as a philosophical middle way between two sets of ontological, epistemological, and methodological assumptions regarding learner needs. Key concepts of critical realism, a tradition in the philosophy of science, are introduced and applied toward an analysis of learner needs, resulting in…

  14. Technologies for Learner-Centered Feedback

    ERIC Educational Resources Information Center

    Costello, Jane; Crane, Daph

    2013-01-01

    As the number, type, and use of technologies to support learning increases, so do the opportunities for using these technologies for feedback. Learner-centered feedback is a core to the teaching-learning process. It is related to assessment in describing how learners perform in their learning, their gain in knowledge, skills, and attitudes.…

  15. Flexible Querying of Lifelong Learner Metadata

    ERIC Educational Resources Information Center

    Poulovassilis, A.; Selmer, P.; Wood, P. T.

    2012-01-01

    This paper discusses the provision of flexible querying facilities over heterogeneous data arising from lifelong learners' educational and work experiences. A key aim of such querying facilities is to allow learners to identify possible choices for their future learning and professional development by seeing what others have done. We motivate and…

  16. Scaffolding Learner Autonomy in Online University Courses

    ERIC Educational Resources Information Center

    Ribbe, Elisa; Bezanilla, María José

    2013-01-01

    This paper deals with the question in what ways teachers and course designers can support the development and exertion of learner autonomy among online university students. It advocates that a greater attention to learner autonomy could help more students to complete their course successfully and thus contribute the decrease of the high dropout…

  17. Valuing the Advanced Learner: Differentiating up

    ERIC Educational Resources Information Center

    Manning, Sandra; Stanford, Barbara; Reeves, Stacy

    2010-01-01

    In today's educational climate, differentiated instruction is a common practice for students who need remediation; what is less common is to Differentiate Instruction for the advanced learner. Contrary to popular perceptions, advanced learners do not automatically differentiate instruction on their own. Students who have the potential to excel…

  18. TRANSLATE: New Strategic Approaches for English Learners

    ERIC Educational Resources Information Center

    Goodwin, Amanda P.; Jiménez, Robert

    2016-01-01

    This teaching tip shares a research-based instructional model that uses translation to improve the English reading comprehension of English Learners. Within this instruction, English learners work collaboratively in small groups and use translation to facilitate understandings of their required English language arts curriculum. Students are taught…

  19. Identifying Successful Learners from Interaction Behaviour

    ERIC Educational Resources Information Center

    McCuaig, Judi; Baldwin, Julia

    2012-01-01

    The interaction behaviours of successful, high-achieving learners when using a Learning Management System (LMS) are different than the behaviours of learners who are having more difficulty mastering the course material. This paper explores the idea that conventional Learning Management Systems can exploit data mining techniques to predict the…

  20. Build Optional Digital Textbooks for Distance Learners

    ERIC Educational Resources Information Center

    Ruo, Du; Xiaotang, Yang

    2013-01-01

    E-books seem to be a trend and an excellent solution for mobile learning lately, but what kinds of e-books are good fit for distance learners' needs? For the purpose of offering open, more appropriate, better in quality, more convenient and flexible learning materials for distance learners. From 2011, through an experimental study on the basis of…

  1. Vocabulary Growth of the Advanced EFL Learner

    ERIC Educational Resources Information Center

    Ozturk, Meral

    2015-01-01

    This article reports the results of two studies on the vocabulary growth of advanced learners of English as a foreign language in an English-medium degree programme. Growth in learners' written receptive and productive vocabularies was investigated in one cross-sectional and one longitudinal study over three years. The effect of word…

  2. How to See a Recently Discovered Supernova

    SciTech Connect

    Nugent, Peter

    2011-01-01

    Berkeley Lab scientist Peter Nugent discusses a recently discovered supernova that is closer to Earth — approximately 21 million light-years away — than any other of its kind in a generation. Astronomers believe they caught the supernova within hours of its explosion, a rare feat made possible with a specialized survey telescope and state-of-the-art computational tools. The finding of such a supernova so early and so close has energized the astronomical community as they are scrambling to observe it with as many telescopes as possible, including the Hubble Space Telescope. More info on how to see it: http://newscenter.lbl.gov/feature-stories/2011/08/31/glimpse-cosmic-explosion/ News release: http://newscenter.lbl.gov/feature-stories/2011/08/25/supernova/

  3. Michael Maier--nine newly discovered letters.

    PubMed

    Lenke, Nils; Roudet, Nicolas; Tilton, Hereward

    2014-02-01

    The authors provide a transcription, translation, and evaluation of nine newly discovered letters from the alchemist Michael Maier (1568-1622) to Gebhardt Johann von Alvensleben (1576-1631), a noble landholder in the vicinity of Magdeburg. Stemming from the final year of his life, this correspondence casts new light on Maier's biography, detailing his efforts to secure patronage amid the financial crisis of the early Thirty Years' War. While his ill-fated quest to perfect potable gold continued to form the central focus of his patronage suits, Maier also offered his services in several arts that he had condemned in his printed works, namely astrology and "supernatural" magic. Remarks concerning his previously unknown acquaintance with Heinrich Khunrath call for a re-evaluation of Maier's negotiation of the discursive boundaries between Lutheran orthodoxy and Paracelsianism. The letters also reveal Maier's substantial contribution to a work previously ascribed solely to the English alchemist Francis Anthony. PMID:25241502

  4. Discovering New Light States at Neutrino Experiments

    SciTech Connect

    Essig, Rouven; Harnik, Roni; Kaplan, Jared; Toro, Natalia; /Stanford U., Phys. Dept.

    2011-08-11

    Experiments designed to measure neutrino oscillations also provide major opportunities for discovering very weakly coupled states. In order to produce neutrinos, experiments such as LSND collide thousands of Coulombs of protons into fixed targets, while MINOS and MiniBooNE also focus and then dump beams of muons. The neutrino detectors beyond these beam dumps are therefore an excellent arena in which to look for long-lived pseudoscalars or for vector bosons that kinetically mix with the photon. We show that these experiments have significant sensitivity beyond previous beam dumps, and are able to partially close the gap between laboratory experiments and supernovae constraints on pseudoscalars. Future upgrades to the NuMI beamline and Project X will lead to even greater opportunities for discovery. We also discuss thin target experiments with muon beams, such as those available in COMPASS, and show that they constitute a powerful probe for leptophilic PNGBs.

  5. Discovering chemistry with an ab initio nanoreactor

    PubMed Central

    Wang, Lee-Ping; Titov, Alexey; McGibbon, Robert; Liu, Fang; Pande, Vijay S.; Martínez, Todd J.

    2014-01-01

    Chemical understanding is driven by the experimental discovery of new compounds and reactivity, and is supported by theory and computation that provides detailed physical insight. While theoretical and computational studies have generally focused on specific processes or mechanistic hypotheses, recent methodological and computational advances harken the advent of their principal role in discovery. Here we report the development and application of the ab initio nanoreactor – a highly accelerated, first-principles molecular dynamics simulation of chemical reactions that discovers new molecules and mechanisms without preordained reaction coordinates or elementary steps. Using the nanoreactor we show new pathways for glycine synthesis from primitive compounds proposed to exist on the early Earth, providing new insight into the classic Urey-Miller experiment. These results highlight the emergence of theoretical and computational chemistry as a tool for discovery in addition to its traditional role of interpreting experimental findings. PMID:25411881

  6. Michael Maier--nine newly discovered letters.

    PubMed

    Lenke, Nils; Roudet, Nicolas; Tilton, Hereward

    2014-02-01

    The authors provide a transcription, translation, and evaluation of nine newly discovered letters from the alchemist Michael Maier (1568-1622) to Gebhardt Johann von Alvensleben (1576-1631), a noble landholder in the vicinity of Magdeburg. Stemming from the final year of his life, this correspondence casts new light on Maier's biography, detailing his efforts to secure patronage amid the financial crisis of the early Thirty Years' War. While his ill-fated quest to perfect potable gold continued to form the central focus of his patronage suits, Maier also offered his services in several arts that he had condemned in his printed works, namely astrology and "supernatural" magic. Remarks concerning his previously unknown acquaintance with Heinrich Khunrath call for a re-evaluation of Maier's negotiation of the discursive boundaries between Lutheran orthodoxy and Paracelsianism. The letters also reveal Maier's substantial contribution to a work previously ascribed solely to the English alchemist Francis Anthony.

  7. Discovering chemistry with an ab initio nanoreactor

    SciTech Connect

    Wang, Lee-Ping; Titov, Alexey; McGibbon, Robert; Liu, Fang; Pande, Vijay S.; Martínez, Todd J.

    2014-11-02

    Chemical understanding is driven by the experimental discovery of new compounds and reactivity, and is supported by theory and computation that provides detailed physical insight. While theoretical and computational studies have generally focused on specific processes or mechanistic hypotheses, recent methodological and computational advances harken the advent of their principal role in discovery. Here we report the development and application of the ab initio nanoreactor – a highly accelerated, first-principles molecular dynamics simulation of chemical reactions that discovers new molecules and mechanisms without preordained reaction coordinates or elementary steps. Using the nanoreactor we show new pathways for glycine synthesis from primitive compounds proposed to exist on the early Earth, providing new insight into the classic Urey-Miller experiment. Ultimately, these results highlight the emergence of theoretical and computational chemistry as a tool for discovery in addition to its traditional role of interpreting experimental findings.

  8. Discovering chemistry with an ab initio nanoreactor

    DOE PAGES

    Wang, Lee-Ping; Titov, Alexey; McGibbon, Robert; Liu, Fang; Pande, Vijay S.; Martínez, Todd J.

    2014-11-02

    Chemical understanding is driven by the experimental discovery of new compounds and reactivity, and is supported by theory and computation that provides detailed physical insight. While theoretical and computational studies have generally focused on specific processes or mechanistic hypotheses, recent methodological and computational advances harken the advent of their principal role in discovery. Here we report the development and application of the ab initio nanoreactor – a highly accelerated, first-principles molecular dynamics simulation of chemical reactions that discovers new molecules and mechanisms without preordained reaction coordinates or elementary steps. Using the nanoreactor we show new pathways for glycine synthesis frommore » primitive compounds proposed to exist on the early Earth, providing new insight into the classic Urey-Miller experiment. Ultimately, these results highlight the emergence of theoretical and computational chemistry as a tool for discovery in addition to its traditional role of interpreting experimental findings.« less

  9. Discovering Rules by Meta-level Abduction

    NASA Astrophysics Data System (ADS)

    Inoue, Katsumi; Furukawa, Koichi; Kobayashi, Ikuo; Nabeshima, Hidetomo

    This paper addresses discovery of unknown relations from incomplete network data by abduction. Given a network information such as causal relations and metabolic pathways, we want to infer missing links and nodes in the network to account for observations. To this end, we introduce a framework of meta-level abduction, which performs abduction in the meta level. This is implemented in SOLAR, an automated deduction system for consequence finding, using a first-order representation for algebraic properties of causality and the full-clausal form of network information and constraints. Meta-level abduction by SOLAR is powerful enough to infer missing rules, missing facts, and unknown causes that involve predicate invention in the form of existentially quantified hypotheses. We also show an application of rule abduction to discover certain physical techniques and related integrity constraints within the subject area of Skill Science.

  10. How to See a Recently Discovered Supernova

    ScienceCinema

    Nugent, Peter

    2016-07-12

    Berkeley Lab scientist Peter Nugent discusses a recently discovered supernova that is closer to Earth — approximately 21 million light-years away — than any other of its kind in a generation. Astronomers believe they caught the supernova within hours of its explosion, a rare feat made possible with a specialized survey telescope and state-of-the-art computational tools. The finding of such a supernova so early and so close has energized the astronomical community as they are scrambling to observe it with as many telescopes as possible, including the Hubble Space Telescope. More info on how to see it: http://newscenter.lbl.gov/feature-stories/2011/08/31/glimpse-cosmic-explosion/ News release: http://newscenter.lbl.gov/feature-stories/2011/08/25/supernova/

  11. Discovering Sentinel Rules for Business Intelligence

    NASA Astrophysics Data System (ADS)

    Middelfart, Morten; Pedersen, Torben Bach

    This paper proposes the concept of sentinel rules for multi-dimensional data that warns users when measure data concerning the external environment changes. For instance, a surge in negative blogging about a company could trigger a sentinel rule warning that revenue will decrease within two months, so a new course of action can be taken. Hereby, we expand the window of opportunity for organizations and facilitate successful navigation even though the world behaves chaotically. Since sentinel rules are at the schema level as opposed to the data level, and operate on data changes as opposed to absolute data values, we are able to discover strong and useful sentinel rules that would otherwise be hidden when using sequential pattern mining or correlation techniques. We present a method for sentinel rule discovery and an implementation of this method that scales linearly on large data volumes.

  12. Discovering New Drugs on the Cellular Level

    NASA Technical Reports Server (NTRS)

    2005-01-01

    With the Vision for Space Exploration calling for a sustained human presence in space, astronauts will need to grow plants, while in orbit, for nourishment that they will not receive from only consuming dehydrated foods. As a potential source of food for long-duration missions, space-grown plants could also give astronauts an important psychological boost, as fresh vegetables could serve as a welcomed change from monotonous meals consisting of reconstituted foods in plastic bags. Even more, these plants could likely aid in the recycling of air and wastewater on spacecraft. With a helping hand from a company by the name of Biolog, Inc., NASA is studying the impacts of decreased gravity and spaceborne bacteria on the plants being grown for food in space. With a helping hand from NASA, this very same company is creating powerful new cell- and bacteria-analysis tools for use in discovering and developing new drugs on Earth.

  13. Andragogical Characteristics and Expectations of University of Hawai'i Adult Learners in a 3D Multi-User Virtual Environment

    ERIC Educational Resources Information Center

    Meeder, Rebecca L.

    2012-01-01

    The purpose of this study was to discover which andragogical characteristics and expectations of adult learners manifested themselves in the three-dimensional, multi-user virtual environment known as Second Life. This digital ethnographic study focused specifically on adult students within the University of Hawai'i Second Life group and their…

  14. Do Learning Environments Make a Difference? A Study on the Acquisition of the English Interrrogatives by Three Types of Cantonese Classroom Learners.

    ERIC Educational Resources Information Center

    Tang, Gladys

    1991-01-01

    This paper reports on a study that attempts to investigate the acquisition orders of the English interrogatives established in three groups of Cantonese classroom learners. A goal of the study is to examine the effect of formal instruction on second language acquisition, to discover whether different intensity of classroom instruction has an…

  15. Discovering indigenous science: Implications for science education

    NASA Astrophysics Data System (ADS)

    Snively, Gloria; Corsiglia, John

    2001-01-01

    addressed in the science classroom. We conclude by presenting instructional strategies that can help all science learners negotiate border crossings between Western modern science and indigenous science.

  16. MiPLAN: a learner-centered model for bedside teaching in today's academic medical centers.

    PubMed

    Stickrath, Chad; Aagaard, Eva; Anderson, Mel

    2013-03-01

    Clinician educators and medical trainees face intense pressure to complete numerous patient care and teaching activities in a limited amount of time. To address the need for effective and efficient teaching methods for use in the inpatient setting, the authors used constructivist learning theory, the principles of adult learning, and their expertise as clinician educators to develop the MiPLAN model for bedside teaching. This three-part model is designed to enable clinical teachers to simultaneously provide care to patients while assessing learners, determining high-yield teaching topics, and providing feedback to learners.The "M" refers to a preparatory meeting between teacher and learners before engaging in patient care or educational activities. During this meeting, team members should become acquainted and the teacher should set goals and clarify expectations. The "i" refers to five behaviors for the teacher to adopt during learners' bedside presentations: introduction, in the moment, inspection, interruptions, and independent thought. "PLAN" is an algorithm to establish priorities for teaching subsequent to a learner's presentation: patient care, learners' questions, attending's agenda, and next steps.The authors suggest that the MiPLAN model can help clinical teachers gain more confidence in their ability to teach at the bedside and increase the frequency and quality of bedside teaching. They propose further research to assess the generalizability of this model to other institutions, settings, and specialties and to evaluate educational and patient outcomes. PMID:23348088

  17. MiPLAN: a learner-centered model for bedside teaching in today's academic medical centers.

    PubMed

    Stickrath, Chad; Aagaard, Eva; Anderson, Mel

    2013-03-01

    Clinician educators and medical trainees face intense pressure to complete numerous patient care and teaching activities in a limited amount of time. To address the need for effective and efficient teaching methods for use in the inpatient setting, the authors used constructivist learning theory, the principles of adult learning, and their expertise as clinician educators to develop the MiPLAN model for bedside teaching. This three-part model is designed to enable clinical teachers to simultaneously provide care to patients while assessing learners, determining high-yield teaching topics, and providing feedback to learners.The "M" refers to a preparatory meeting between teacher and learners before engaging in patient care or educational activities. During this meeting, team members should become acquainted and the teacher should set goals and clarify expectations. The "i" refers to five behaviors for the teacher to adopt during learners' bedside presentations: introduction, in the moment, inspection, interruptions, and independent thought. "PLAN" is an algorithm to establish priorities for teaching subsequent to a learner's presentation: patient care, learners' questions, attending's agenda, and next steps.The authors suggest that the MiPLAN model can help clinical teachers gain more confidence in their ability to teach at the bedside and increase the frequency and quality of bedside teaching. They propose further research to assess the generalizability of this model to other institutions, settings, and specialties and to evaluate educational and patient outcomes.

  18. Ten Tips for Engaging the Millennial Learner and Moving an Emergency Medicine Residency Curriculum into the 21st Century

    PubMed Central

    Toohey, Shannon L.; Wray, Alisa; Wiechmann, Warren; Lin, Michelle; Boysen-Osborn, Megan

    2016-01-01

    Introduction Millennial learners are changing the face of residency education because they place emphasis on technology with new styles and means of learning. While research on the most effective way to teach the millennial learner is lacking, programs should consider incorporating educational theories and multimedia design principles to update the curriculum for these new learners. The purpose of the study is to discuss strategies for updating an emergency medicine (EM) residency program’s curriculum to accommodate the modern learner. Discussion These 10 tips provide detailed examples and approaches to incorporate technology and learning theories into an EM curriculum to potentially enhance learning and engagement by residents. Conclusion While it is unclear whether technologies actually promote or enhance learning, millennials use these technologies. Identifying best practice, grounded by theory and active learning principles, may help learners receive quality, high-yield education. Future studies will need to evaluate the efficacy of these techniques to fully delineate best practices. PMID:27330668

  19. The Cerebral Basis for Language Learner Strategies: A Near-Infrared Spectroscopy Study

    ERIC Educational Resources Information Center

    Takeuchi, Osamu; Ikeda, Maiko; Mizumoto, Atsushi

    2012-01-01

    In this paper, we validate Macaro's (2006) model of strategy use among language learners by assessing the amount of neural activity around the prefrontal cortex, the supposed locus of working memory (WM). We also examine whether WM activation during first language (L1) strategy deployment is lower than WM activation during second language (L2)…

  20. FipsOrtho: A Spell Checker for Learners of French

    ERIC Educational Resources Information Center

    L'Haire, Sebastien

    2007-01-01

    This paper presents FipsOrtho, a spell checker targeted at learners of French, and a corpus of learners' errors which has been gathered to test the system and to get a sample of specific language learners' errors. Spell checkers are a standard feature of many software products, however they are not designed for specific language learners' errors.…

  1. Best Practices for Teaching the "Whole" Adult ESL Learner

    ERIC Educational Resources Information Center

    Schwarzer, David

    2009-01-01

    Whole language learning implies that teachers look at adult learners as whole persons rather than just ESL learners. It asks the teachers to see the learners in their classes as parents, spouses, employees or business owners, neighbors, churchgoers, and members of various communities. In other words, when they approach learners in their classes as…

  2. Learner Agency within the Design of an EAP Course

    ERIC Educational Resources Information Center

    Seppälä, Riina

    2015-01-01

    To meet the demands of today's society and working life, higher education should support the development of learner agency. How the agency of individual learners emerges in university courses and what kind of agency empowers the learners to face new challenges should be considered. In this article, the focus is on learner agency enabled and…

  3. Misplaced Heritage Language Learners of Japanese in Secondary Schools

    ERIC Educational Resources Information Center

    Oguro, Susan; Moloney, Robyn

    2012-01-01

    While heritage language learners are becoming visible in the research literature as a distinct group of language learners with specific needs, existing curriculum structures in secondary schools often focus on programs either for foreign language learners or for first language learners. The study reported here examines the experiences of heritage…

  4. Discovering a "True" Map of the World--Learning Activities.

    ERIC Educational Resources Information Center

    Hantula, James

    "True" maps of the world, as seen from the perspective of the time in which they were produced, remain an ethnocentric visual language in modern times. Students can gain insight into such "true" maps by studying maps produced in the great traditions of the West and East. Teachers can determine a map's appropriateness by identifying its title,…

  5. Discovering Biofilms: Inquiry-Based Activities for the Classroom

    ERIC Educational Resources Information Center

    Redelman, Carly V.; Marrs, Kathleen; Anderson, Gregory G.

    2012-01-01

    In nature, bacteria exist in and adapt to different environments by forming microbial communities called "biofilms." We propose simple, inquiry-based laboratory exercises utilizing a biofilm formation assay, which allows controlled biofilm growth. Students will be able to qualitatively assess biofilm growth via staining. Recently, we developed a…

  6. A Newly Discovered Highly Variable IDV Source

    NASA Astrophysics Data System (ADS)

    Gabanyi, K. E.; Marchili, N.; Krichbaum, T. P.; Fuhrmann, L.; Britzen, S.; Witzel, A.; Zensus, J. A.; Liu, X.; Huagang, S.; Han, J. L.

    Short time scale radio variations of compact extragalactic radio quasars and blazars known as IntraDay Variability (IDV) can be explained in at least some sources as a propagation effect; the variations are interpreted as scintillation of radio waves in the turbulent interstellar medium of the Milky Way. One of the most convincing observational arguments in favour of a propagationinduced variability scenario is the observed annual modulation in the characteristic variability time scale due to the Earth's orbital motion. So far there are only two sources known with a well-constrained seasonal cycle. J1128+592 is a recently discovered, highly variable IDV source. Previous, densely time-sampled flux-density measurements with the Effelsberg 100-m radio telescope (Germany) and the Urumqi 25-m radio telescope (China), strongly indicate an annual modulation of the time scale. Here, we summarise the annual modulation model derived using all the measurements, carried out in the last 2.5 years. Bursts, Pulses and Flickering:Wide-field monitoring of the dynamic radio sky June 12-15 2007 Kerastari, Tripolis, Greece

  7. Discover Space: an IYA program for libraries

    NASA Astrophysics Data System (ADS)

    Dusenbery, P.

    2009-12-01

    Across the country, there is a growing concern regarding the number of students entering science and technology careers. While the focus for education reform is on school improvement, there is considerable research that supports the role that out-of-school experiences can play in student achievement. This is particularly true when family interactions are factored in. Libraries provide an untapped resource for engaging underserved youth and their families in fostering an appreciation and deeper understanding of science and technology topics. The nation’s more than 17,000 public libraries attract diverse audiences in almost every community. Science exhibits in libraries could potentially reach many adults and upper elementary and middle school students with STEM content. The Space Science Institute (SSI) is partnering with the American Library Association (ALA) to develop a pilot exhibit called Discover Space. The exhibit includes two areas: Space Storms and Star Quest and is currently on tour in Colorado. It is a featured IYA outreach project from SSI. This presentation will focus on the results of a national survey of libraries that SSI and ALA conducted in 2008 about interest in STEM exhibits as well as the development process that was used to design and fabricate the exhibit. Preliminary evaluation results will also be shared. The presentation will conclude with an examination of how this program could benefit underserved communities around the country.

  8. How the antihypertensive losartan was discovered.

    PubMed

    Bhardwaj, Gaurab

    2006-11-01

    Based on interviews and publications, this case study is a history of how DuPont scientists discovered losartan, the first angiotensin II receptor antagonist. Essential aspects of the story include: i) the discovery occurred at a young and inexperienced pharmaceutical business; ii) three bench scientists had recently graduated from PhD programmes and only the fourth had any industrial research experience; iii) pivotal to its success was the support and risk-taking of the highly experienced and recently hired head of pharmaceutical research; iv) a timely patent issued to Takeda Chemical Industries suggested a new line of research; v) a mistake made by an inexperienced pharmacologist yielded pivotal information; vi) the bench scientists were given the freedom to explore while being supported by research managers; vii) luck favoured the scientists in losartan's subreceptor-binding and metabolite; and viii) the marketing group insisted that losartan not be developed until Merck expressed an interest in the drug candidate. Today, losartan is a multibillion dollar drug. PMID:23506070

  9. Discovering Alzheimer Genetic Biomarkers Using Bayesian Networks.

    PubMed

    Sherif, Fayroz F; Zayed, Nourhan; Fakhr, Mahmoud

    2015-01-01

    Single nucleotide polymorphisms (SNPs) contribute most of the genetic variation to the human genome. SNPs associate with many complex and common diseases like Alzheimer's disease (AD). Discovering SNP biomarkers at different loci can improve early diagnosis and treatment of these diseases. Bayesian network provides a comprehensible and modular framework for representing interactions between genes or single SNPs. Here, different Bayesian network structure learning algorithms have been applied in whole genome sequencing (WGS) data for detecting the causal AD SNPs and gene-SNP interactions. We focused on polymorphisms in the top ten genes associated with AD and identified by genome-wide association (GWA) studies. New SNP biomarkers were observed to be significantly associated with Alzheimer's disease. These SNPs are rs7530069, rs113464261, rs114506298, rs73504429, rs7929589, rs76306710, and rs668134. The obtained results demonstrated the effectiveness of using BN for identifying AD causal SNPs with acceptable accuracy. The results guarantee that the SNP set detected by Markov blanket based methods has a strong association with AD disease and achieves better performance than both naïve Bayes and tree augmented naïve Bayes. Minimal augmented Markov blanket reaches accuracy of 66.13% and sensitivity of 88.87% versus 61.58% and 59.43% in naïve Bayes, respectively. PMID:26366461

  10. Discovering Alzheimer Genetic Biomarkers Using Bayesian Networks

    PubMed Central

    Sherif, Fayroz F.; Zayed, Nourhan; Fakhr, Mahmoud

    2015-01-01

    Single nucleotide polymorphisms (SNPs) contribute most of the genetic variation to the human genome. SNPs associate with many complex and common diseases like Alzheimer's disease (AD). Discovering SNP biomarkers at different loci can improve early diagnosis and treatment of these diseases. Bayesian network provides a comprehensible and modular framework for representing interactions between genes or single SNPs. Here, different Bayesian network structure learning algorithms have been applied in whole genome sequencing (WGS) data for detecting the causal AD SNPs and gene-SNP interactions. We focused on polymorphisms in the top ten genes associated with AD and identified by genome-wide association (GWA) studies. New SNP biomarkers were observed to be significantly associated with Alzheimer's disease. These SNPs are rs7530069, rs113464261, rs114506298, rs73504429, rs7929589, rs76306710, and rs668134. The obtained results demonstrated the effectiveness of using BN for identifying AD causal SNPs with acceptable accuracy. The results guarantee that the SNP set detected by Markov blanket based methods has a strong association with AD disease and achieves better performance than both naïve Bayes and tree augmented naïve Bayes. Minimal augmented Markov blanket reaches accuracy of 66.13% and sensitivity of 88.87% versus 61.58% and 59.43% in naïve Bayes, respectively. PMID:26366461

  11. Astronomers Discover Fastest-Spinning Pulsar

    NASA Astrophysics Data System (ADS)

    2006-01-01

    Astronomers using the National Science Foundation's Robert C. Byrd Green Bank Telescope have discovered the fastest-spinning neutron star ever found, a 20-mile-diameter superdense pulsar whirling faster than the blades of a kitchen blender. Their work yields important new information about the nature of one of the most exotic forms of matter known in the Universe. Pulsar Graphic Pulsars Are Spinning Neutron Stars CREDIT: Bill Saxton, NRAO/AUI/NSF (Click on image for larger version) "We believe that the matter in neutron stars is denser than an atomic nucleus, but it is unclear by how much. Our observations of such a rapidly rotating star set a hard upper limit on its size, and hence on how dense the star can be.," said Jason Hessels, a graduate student at McGill University in Montreal. Hessels and his colleagues presented their findings to the American Astronomical Society's meeting in Washington, DC. Pulsars are spinning neutron stars that sling "lighthouse beams" of radio waves or light around as they spin. A neutron star is what is left after a massive star explodes at the end of its "normal" life. With no nuclear fuel left to produce energy to offset the stellar remnant's weight, its material is compressed to extreme densities. The pressure squeezes together most of its protons and electrons to form neutrons; hence, the name "neutron star." "Neutron stars are incredible laboratories for learning about the physics of the fundamental particles of nature, and this pulsar has given us an important new limit," explained Scott Ransom, an astronomer at the National Radio Astronomy Observatory and one of Hessels' collaborators on this work. The scientists discovered the pulsar, named PSR J1748-2446ad, in a globular cluster of stars called Terzan 5, located some 28,000 light-years from Earth in the constellation Sagittarius. The newly-discovered pulsar is spinning 716 times per second, or at 716 Hertz (Hz), readily beating the previous record of 642 Hz from a pulsar

  12. Discovering the Ancient Maya From Space

    NASA Technical Reports Server (NTRS)

    Sever, T. L.

    2007-01-01

    The Peten region of northern Guatemala contains some of the most significant Mayan archeological sites in Latin America. It was in this region that the Maya civilization began, flourished, and abruptly disappeared. Remote sensing technology is helping to locate and map ancient Maya sites that are threatened today by accelerating deforestation and looting. Thematic Mapper, IKONOS, and QuickBird satellite, and airborne STAR-3i and AIRSAR radar data, combined with Global Positioning System (GPS) technology, are successfully detecting ancient Maya features such as sites, roadways, canals, and water reservoirs. Satellite imagery is also being used to map the bajos, which are seasonally flooded swamps that cover over 40% of the land surface. Through the use of various airborne and satellite sensor systems we have been able to detect and map ancient causeways, temples, reservoirs, and land forms, and locate these features on the ground through GPS technology. Recently, we have discovered that there is a strong relationship between a tropical forest vegetation signature in satellite imagery and the location of archeological sites. We believe that the use o f limestone and lime plasters in ancient Maya construction affects the moisture, nutrition, and plant species of the surface vegetation. We have mapped these vegetation signatures in the imagery and verified through field survey that they are indicative of archeological sites. Through the use of remote sensing and GIS technology it is possible to identify unrecorded archeological features in a dense tropical forest environment and monitor these cultural features for their protection.

  13. Discovering the Ancient Maya from Space

    NASA Technical Reports Server (NTRS)

    Sever, T. L.

    2008-01-01

    The Pet6n region of northern Guatemala contains some of the most significant Mayan archeological sites in Latin America. It was in this region that the Maya civilization began, flourished, and abruptly disappeared. Remote sensing technology is helping to locate and map ancient Maya sites that are threatened today by accelerating deforestation and looting. Thematic Mapper, IKONOS, and QuickBird satellite, and airborne STAR-3i and AIRSAR radar data, combined with Global Positioning System (GPS) technology, are successfully detecting ancient Maya features such as sites, roadways, canals, and water reservoirs. Satellite imagery is also being used to map the bajos, which are seasonally flooded swamps that cover over 40% of the land surface. Through the use of various airborne and satellite sensor systems we have been able to detect and map ancient causeways, temples, reservoirs, and land forms, and locate these features on the ground through GPS technology. Recently, we have discovered that there is a strong relationship between a tropical forest vegetation signature in satellite imagery and the location of archeological sites. We believe that the use of limestone and lime plasters in ancient Maya construction affects the moisture, nutrition, and plant species of the surface vegetation. We have mapped these vegetation signatures in the imagery and verified through field survey that they are indicative of archeological sites. Through the use of remote sensing and GIS technology it is possible to identify unrecorded archeological features in a dense tropical forest environment and monitor these cultural features for their protection.

  14. Higher order thinking skills competencies required by outcomes-based education from learners.

    PubMed

    Chabeli, M M

    2006-08-01

    Outcomes-Based Education (OBE) brought about a significant paradigm shift in the education and training of learners in South Africa. OBE requires a shift from focusing on the teacher input (instruction offerings or syllabuses expressed in terms of content), to focusing on learner outcomes. OBE is moving away from 'transmission' models to constructivistic, learner-centered models that put emphasis on learning as an active process (Nieburh, 1996:30). Teachers act as facilitators and mediators of learning (Norms and Standards, Government Gazette vol 415, no 20844 of 2000). Facilitators are responsible to create the environment that is conducive for learners to construct their own knowledge, skills and values through interaction (Peters, 2000). The first critical cross-field outcome accepted by the South African Qualification Framework (SAQA) is that learners should be able to identify and solve problems by using critical and creative thinking skills. This paper seeks to explore some higher order thinking skills competencies required by OBE from learners such as critical thinking, reflective thinking, creative thinking, dialogic / dialectic thinking, decision making, problem solving and emotional intelligence and their implications in facilitating teaching and learning from the theoretical perspective. The philosophical underpinning of these higher order thinking skills is described to give direction to the study. It is recommended that a study focusing on the assessment of these intellectual concepts be made. The study may be qualitative, quantitative or mixed methods in nature (Creswell 2005). PMID:17131612

  15. Higher order thinking skills competencies required by outcomes-based education from learners.

    PubMed

    Chabeli, M M

    2006-08-01

    Outcomes-Based Education (OBE) brought about a significant paradigm shift in the education and training of learners in South Africa. OBE requires a shift from focusing on the teacher input (instruction offerings or syllabuses expressed in terms of content), to focusing on learner outcomes. OBE is moving away from 'transmission' models to constructivistic, learner-centered models that put emphasis on learning as an active process (Nieburh, 1996:30). Teachers act as facilitators and mediators of learning (Norms and Standards, Government Gazette vol 415, no 20844 of 2000). Facilitators are responsible to create the environment that is conducive for learners to construct their own knowledge, skills and values through interaction (Peters, 2000). The first critical cross-field outcome accepted by the South African Qualification Framework (SAQA) is that learners should be able to identify and solve problems by using critical and creative thinking skills. This paper seeks to explore some higher order thinking skills competencies required by OBE from learners such as critical thinking, reflective thinking, creative thinking, dialogic / dialectic thinking, decision making, problem solving and emotional intelligence and their implications in facilitating teaching and learning from the theoretical perspective. The philosophical underpinning of these higher order thinking skills is described to give direction to the study. It is recommended that a study focusing on the assessment of these intellectual concepts be made. The study may be qualitative, quantitative or mixed methods in nature (Creswell 2005).

  16. N-learners problem: Fusion of concepts

    SciTech Connect

    Rao, N.S.V.; Oblow, E.M.; Glover, C.W.; liepins, G.E. . Dept. of Computer Science)

    1991-09-01

    We are given N learners each capable of learning concepts (subsets) of a domain set X in the sense of Valiant, i.e. for any c {element of} C {improper subset} 2{sup X}, given a finite set of examples of the form < x{sub 1}, M{sub c}(x{sub 1}) >; < x{sub 2}, M{sub c}(x{sub 2}) >;...;< x{sub 1}, M{sub c}(x{sub 1}) > generated according to an unknown probability distribution P{sub X} on X, each learner produces a close approximation to c with a high probability. We are interested in combining the N learners using a single fuser or consolidator. We consider the paradigm of passive fusion, where each learner is first trained with the sample without the influence of the consolidator. The composite system is constituted by the fuser and the individual learners. We consider two cases: open and closed fusion. In open fusion the fuser is given the sample and the hypotheses of the individual learners; we show that the fusion rule can be obtained by formulating this problem as another learning problem. For the case all individual learners are trained with the same sample, we show sufficiency conditions that ensure the composite system to be better than the best of the individual: the hypothesis space of the consolidator (a) satisfies the isolation property of degree at least N, and (b) has Vapnik-Chervonenkis dimension less than or equal to that of every individual learner. If individual learners are trained by independently generated samples, we obtain a much weaker bound on the VC-dimension of the hypothesis space of the fuser. Second, in closed fusion the fuser does not have an access to either the training sample or the hypotheses of the individual learners. By suitable designing a linear threshold function of the outputs of individual learners, we show that the composite system can be made better than the best of the learners.

  17. ROSAT Discovers Unique, Distant Cluster of Galaxies

    NASA Astrophysics Data System (ADS)

    1995-06-01

    Brightest X-ray Cluster Acts as Strong Gravitational Lens Based on exciting new data obtained with the ROSAT X-ray satellite and a ground-based telescope at the ESO La Silla Observatory, a team of European astronomers [2] has just discovered a very distant cluster of galaxies with unique properties. It emits the strongest X-ray emission of any cluster ever observed by ROSAT and is accompanied by two extraordinarily luminous arcs that represent the gravitationally deflected images of even more distant objects. The combination of these unusual characteristics makes this cluster, now known as RXJ1347.5-1145, a most interesting object for further cosmological studies. DISCOVERY AND FOLLOW-UP OBSERVATIONS This strange cluster of galaxies was discovered during the All Sky Survey with the ROSAT X-ray satellite as a moderately intense X-ray source in the constellation of Virgo. It could not be identified with any already known object and additional ground-based observations were therefore soon after performed with the Max-Planck-Society/ESO 2.2-metre telescope at the La Silla observatory in Chile. These observations took place within a large--scale redshift survey of X-ray clusters of galaxies detected by the ROSAT All Sky Survey, a so-called ``ESO Key Programme'' led by astronomers from the Max-Planck-Institut fur Extraterrestrische Physik and the Osservatorio Astronomico di Brera. The main aim of this programme is to identify cluster X-ray sources, to determine the distance to the X-ray emitting clusters and to investigate their overall properties. These observations permitted to measure the redshift of the RXJ1347.5-1145 cluster as z = 0.45, i.e. it moves away from us with a velocity (about 106,000 km/sec) equal to about one-third of the velocity of light. This is an effect of the general expansion of the universe and it allows to determine the distance as about 5,000 million light-years (assuming a Hubble constant of 75 km/sec/Mpc). In other words, we see these

  18. Discovering New R Coronae Borealis Stars

    NASA Astrophysics Data System (ADS)

    Clayton, Geoffrey C.; Tisserand, Patrick; Welch, Douglas L.; LeBleu, Amy

    2016-01-01

    The R Coronae Borealis (RCB) stars are rare hydrogen-deficient, carbon-rich supergiants. Two evolutionary scenarios have been suggested, a double degenerate merger of two white dwarfs, or a final helium shell flash in a PN central star. The evidence pointing toward a white-dwarf merger or a final-flash origin for RCB stars is contradictory. The distribution on the sky and radial velocities of the RCB stars tend toward those of the bulge population but a much larger sample of stars is needed to determine the true population. We need to discover RCB stars much more efficiently. In order to do this, we have used a series of IR color-color cuts, using the recent release of the WISE All-Sky Catalog, to produce a sample of 2200 candidates that may yield over 200 new RCB star identifications. Most of these candidates do not have lightcurves, the traditional technique of identifying RCB stars from their characteristic large and irregular light variations. We have obtained optical spectra of several hundred candidates and have confirmed over 40 new RCB stars in the Galaxy. We are attempting to develop a quantitative spectral classification system for the RCB stars so that they can be identified without an accompanying light curve. The cooler RCB stars look like carbon stars with strong C2 bands, but they can be differentiated from carbon stars by their extreme hydrogen deficiency and very low 13C/12C ratio. Also, the red CN bands are much weaker in RCB stars than in carbon stars. The number of RCB stars in the Galaxy may be consistent with the predicted number of He/CO white-dwarf mergers. Solving the mystery of how the RCB stars evolve would be a watershed event in the study of stellar evolution that will lead to a better understanding of other important types of stellar merger events such as Type Ia SNe.

  19. HUBBLE AND KECK DISCOVER GALAXY BUILDING BLOCK

    NASA Technical Reports Server (NTRS)

    2002-01-01

    This NASA Hubble Space Telescope image shows a very small, faint galaxy 'building block' newly discovered by a unique collaboration between ground- and space-based telescopes. Hubble and the 10-meter Keck Telescopes in Hawaii joined forces, using a galaxy cluster which acts as gravitational lens to detect what scientists believe is one of the smallest very distant objects ever found. The galaxy cluster Abell 2218 was used by a team of European and American astronomers led by Richard Ellis (Caltech) in their systematic search for intrinsically faint distant star-forming systems. Without help from Abell 2218's exceptional magnifying power to make objects appear about 30 times brighter, the galaxy building block would have been undetectable. In the image to the right, the object is seen distorted into two nearly identical, very red 'images' by the gravitational lens. The image pair represents the magnified result of a single background object gravitationally lensed by Abell 2218 and viewed at a distance of 13.4 billion light-years. The intriguing object contains only one million stars, far fewer than a mature galaxy, and scientists believe it is very young. Such young star-forming systems of low mass at early cosmic times are likely to be the objects from which present-day galaxies have formed. In the image to the left, the full overview of the galaxy cluster Abell 2218 is seen. This image was taken by Hubble in 1999 at the completion of Hubble Servicing Mission 3A. Credit: NASA, ESA, Richard Ellis (Caltech) and Jean-Paul Kneib (Observatoire Midi-Pyrenees, France) Acknowledgment: NASA, A. Fruchter and the ERO Team (STScI and ST-ECF)

  20. English Language Learners interactions with various science curriculum features

    NASA Astrophysics Data System (ADS)

    Norland, Jennifer Jane

    2005-12-01

    The purpose of this study was to examine the interactions of eighth grade English Language Learners in an inclusive science classroom. There is a paucity of research in this area. Central to this study was the students' perceptions and interactions with five different science curriculum features; teacher presentation and guided notes, worksheets, homework, labs, and practice and review activities. The student participants were English Language Learners from two language proficiency levels and the teacher was a provisionally licensed first year science teacher. The aggregate data included individual interviews with the students and teacher, classroom observations, and the collection of classroom artifacts. The findings revealed: (a) students' comprehension of the material was inconsistent throughout all of the curriculum features and differences were observed not only between but also within the two proficiency levels; (b) classroom organizational issues created challenges for both the teacher and the students; (c) off task behavior was most prevalent during the teacher's one-to-one instruction and interfered with learning; (d) differences between levels of language proficiency were observed among students who preferred to work independently and were comfortable asking the teacher for assistance and the students who preferred working with and receiving assistance from peers; and (e) language proficiency rather than cultural differences appeared to be the greatest barrier to classroom success. Overall, English language proficiency was a crucial determinant in the English Language Learners success in the inclusive classroom. Additionally, implications suggest that a limited teaching skill set could adversely affect the success of students in inclusive classrooms.

  1. Adrenal Pheochromocytoma Incidentally Discovered in a Patient With Parkinsonism

    PubMed Central

    Petramala, Luigi; Concistrè, Antonio; Marinelli, Cristiano; Zinnamosca, Laura; Iannucci, Gino; Lucia, Piernatale; De Vincentis, Giuseppe; Letizia, Claudio

    2015-01-01

    Abstract To evaluate the diagnostic route of pheochromocytoma (PHEO) in a patient under dopaminergic treatment. A 70-year-old man with Parkinsonism and under treatment with levodopa and carbidopa came to our observation for evaluation of arterial hypertension and right adrenal mass discovered incidentally. To evaluate adrenal hormone levels we performed a dexamethasone suppression test, plasma aldosterone levels and 24-hr urinary metanephrine, which revealed elevated levels of catecholamines metabolities. 123-I-metaiodobenzylguanidine SPECT scintiscan revealed raised activity within the right adrenal gland concordant with the mass. The diagnosis of PHEO was posed and an elective laparoscopic adrenalectomy was performed; histopathological examination confirmed the PHEO diagnosis. Recently the coexistence of PHEO and Parkinsonism is a very rare association of diseases, with only 3 cases reported in literature. In this article, another case is reported and diagnostic procedures are discussed. PMID:26496334

  2. Portfolios for a Community of Learners.

    ERIC Educational Resources Information Center

    Rousculp, Edwin E.; Maring, Gerald H.

    1992-01-01

    Describes a content area reading course for undergraduates in which teachers and students worked cooperatively as a community of learners, embodying rather than "talking about" reading-writing connections. (SR)

  3. Learner-centered characteristics of nurse educators.

    PubMed

    Greer, Annette G; Pokorny, Marie; Clay, Maria C; Brown, Sylvia; Steele, Linda L

    2010-01-01

    The purpose of this study was to describe the learner-centered teaching characteristics of nurse faculty who report using contemporary pedagogy. A secondary analysis of data collected by an international survey of nurse educators regarding pedagogical teaching approaches and strategies was used to answer the research questions. The study sought to: 1) describe characteristics emerging from faculty response, 2) make inferences from faculty responses regarding meaning, and 3) make inferences regarding the importance of the meaning to nursing. A qualitative research design was used to address the research question. Themes that emerged were placed under the concepts of power, role of teacher, responsibility of learner, and philosophy of evaluation guided by Weimer's (2002) conceptual framework of a learner-centered philosophy of teaching. Themes and meaning units derived from the study helped to generate textual and structure statements that represent the characterizations of learner-centered nurse educators. PMID:20196765

  4. Discover a Watershed: The Missouri Educators Guide

    ERIC Educational Resources Information Center

    Project WET Foundation, 2004

    2004-01-01

    2005 IPPY Award Winner! Actively engaging students with 36 science-based, multidisciplinary, hands-on activities, this "Guide" is an award-winning learning tool covering the Missouri Basin's hydrology, geology, geography, tribes, settlement, cities, agriculture, industry, recreation, navigation, plant and animal species, issues, management and…

  5. Astrobiology: Discovering New Worlds of Life.

    ERIC Educational Resources Information Center

    James, Charles C.; Van Dover, Cindy Lee

    2001-01-01

    Emphasizes discoveries at the frontiers of science. Includes an instructional poster illustrating the hydrothermal vent communities on the deep ocean floor. Describes research activities related to the new discipline of astrobiology, a multidisciplinary approach to studying the emergence of life in the universe. Research activities include the…

  6. Discover Brazil. A Unit of Study.

    ERIC Educational Resources Information Center

    Goobie, Kathy; And Others

    These curriculum materials were designed to assist sixth grade teachers in the delivery of the world regions component of the grade six social studies. Activities engage students in thinking, analysis, and speculation with a blend of process and product exercises. The book is divided into five sections. "Introductory Activities" include: (1)…

  7. Inner solar system material discovered in the Oort cloud

    PubMed Central

    Meech, Karen J.; Yang, Bin; Kleyna, Jan; Hainaut, Olivier R.; Berdyugina, Svetlana; Keane, Jacqueline V.; Micheli, Marco; Morbidelli, Alessandro; Wainscoat, Richard J.

    2016-01-01

    We have observed C/2014 S3 (PANSTARRS), a recently discovered object on a cometary orbit coming from the Oort cloud that is physically similar to an inner main belt rocky S-type asteroid. Recent dynamical models successfully reproduce the key characteristics of our current solar system; some of these models require significant migration of the giant planets, whereas others do not. These models provide different predictions on the presence of rocky material expelled from the inner solar system in the Oort cloud. C/2014 S3 could be the key to verifying these predictions of the migration-based dynamical models. Furthermore, this object displays a very faint, weak level of comet-like activity, five to six orders of magnitude less than that of typical ice-rich comets on similar Orbits coming from the Oort cloud. For the nearly tailless appearance, we are calling C/2014 S3 a Manx object. Various arguments convince us that this activity is produced by sublimation of volatile ice, that is, normal cometary activity. The activity implies that C/2014 S3 has retained a tiny fraction of the water that is expected to be present at its formation distance in the inner solar system. We may be looking at fresh inner solar system Earth-forming material that was ejected from the inner solar system and preserved for billions of years in the Oort cloud. PMID:27386512

  8. Inner solar system material discovered in the Oort cloud.

    PubMed

    Meech, Karen J; Yang, Bin; Kleyna, Jan; Hainaut, Olivier R; Berdyugina, Svetlana; Keane, Jacqueline V; Micheli, Marco; Morbidelli, Alessandro; Wainscoat, Richard J

    2016-04-01

    We have observed C/2014 S3 (PANSTARRS), a recently discovered object on a cometary orbit coming from the Oort cloud that is physically similar to an inner main belt rocky S-type asteroid. Recent dynamical models successfully reproduce the key characteristics of our current solar system; some of these models require significant migration of the giant planets, whereas others do not. These models provide different predictions on the presence of rocky material expelled from the inner solar system in the Oort cloud. C/2014 S3 could be the key to verifying these predictions of the migration-based dynamical models. Furthermore, this object displays a very faint, weak level of comet-like activity, five to six orders of magnitude less than that of typical ice-rich comets on similar Orbits coming from the Oort cloud. For the nearly tailless appearance, we are calling C/2014 S3 a Manx object. Various arguments convince us that this activity is produced by sublimation of volatile ice, that is, normal cometary activity. The activity implies that C/2014 S3 has retained a tiny fraction of the water that is expected to be present at its formation distance in the inner solar system. We may be looking at fresh inner solar system Earth-forming material that was ejected from the inner solar system and preserved for billions of years in the Oort cloud. PMID:27386512

  9. Inner solar system material discovered in the Oort cloud.

    PubMed

    Meech, Karen J; Yang, Bin; Kleyna, Jan; Hainaut, Olivier R; Berdyugina, Svetlana; Keane, Jacqueline V; Micheli, Marco; Morbidelli, Alessandro; Wainscoat, Richard J

    2016-04-01

    We have observed C/2014 S3 (PANSTARRS), a recently discovered object on a cometary orbit coming from the Oort cloud that is physically similar to an inner main belt rocky S-type asteroid. Recent dynamical models successfully reproduce the key characteristics of our current solar system; some of these models require significant migration of the giant planets, whereas others do not. These models provide different predictions on the presence of rocky material expelled from the inner solar system in the Oort cloud. C/2014 S3 could be the key to verifying these predictions of the migration-based dynamical models. Furthermore, this object displays a very faint, weak level of comet-like activity, five to six orders of magnitude less than that of typical ice-rich comets on similar Orbits coming from the Oort cloud. For the nearly tailless appearance, we are calling C/2014 S3 a Manx object. Various arguments convince us that this activity is produced by sublimation of volatile ice, that is, normal cometary activity. The activity implies that C/2014 S3 has retained a tiny fraction of the water that is expected to be present at its formation distance in the inner solar system. We may be looking at fresh inner solar system Earth-forming material that was ejected from the inner solar system and preserved for billions of years in the Oort cloud.

  10. New Galactic supernova remnants discovered with IPHAS

    NASA Astrophysics Data System (ADS)

    Sabin, L.; Parker, Q. A.; Contreras, M. E.; Olguín, L.; Frew, D. J.; Stupar, M.; Vázquez, R.; Wright, N. J.; Corradi, R. L. M.; Morris, R. A. H.

    2013-05-01

    As part of a systematic search programme of a 10° wide strip of the northern Galactic plane, we present preliminary evidence for the discovery of four (and possibly five) new supernova remnants (SNRs). The pilot search area covered the 19-20 h right ascension zone sampling from +20° to +55° in declination using binned mosaic images from the Isaac Newton Telescope Photometric Hα Survey (IPHAS). The optical identification of the candidate SNRs was based mainly on their filamentary and arc-like emission morphologies, their apparently coherent, even if fractured, structure and clear disconnection from any diffuse neighbouring H II region type nebulosity. Follow-up optical spectroscopy was undertaken, sampling carefully across prominent features of these faint sources. The resulting spectra revealed typical emission-line ratios for shock-excited nebulae which are characteristic of SNRs, which, along with the latest diagnostic diagrams, strongly support the likely SNR nature of these sources: G038.7-1.3 (IPHASX J190640.5+042819), G067.6+0.9 (IPHASX J195744.9+305306), G066.0-0.0 (IPHASX J195749.2+290259) and G065.8-0.5 (IPHASX J195920.4+283740). A fifth possible younger, higher density nebula SNR candidate, G067.8+0.5 (IPHASX J200002.4+305035), was discovered ˜5 arcmin to the west of IPHASX J195744.9+305306, and it warrants further study. A multiwavelength cross-check from available archived data in the regions of these candidates was also performed with a focus on possible radio counterparts. A close positional match between previously unrecognized radio structures at several frequencies and across various components of the Hα optical image data was found for all SNR candidates. This lends further direct support for the SNR nature of these objects. Evolved SNRs may have very weak and/or highly fragmented radio emission which could explain why they had not been previously recognized, but the association becomes clear in combination with the optical emission.

  11. Discovering Extrasolar Planets with Microlensing Surveys

    NASA Astrophysics Data System (ADS)

    Wambsganss, J.

    2016-06-01

    An astronomical survey is commonly understood as a mapping of a large region of the sky, either photometrically (possibly in various filters/wavelength ranges) or spectroscopically. Often, catalogs of objects are produced/provided as the main product or a by-product. However, with the advent of large CCD cameras and dedicated telescopes with wide-field imaging capabilities, it became possible in the early 1990s, to map the same region of the sky over and over again. In principle, such data sets could be combined to get very deep stacked images of the regions of interest. However, I will report on a completely different use of such repeated maps: Exploring the time domain for particular kinds of stellar variability, namely microlens-induced magnifications in search of exoplanets. Such a time-domain microlensing survey was originally proposed by Bohdan Paczynski in 1986 in order to search for dark matter objects in the Galactic halo. Only a few years later three teams started this endeavour. I will report on the history and current state of gravitational microlensing surveys. By now, routinely 100 million stars in the Galactic Bulge are monitored a few times per week by so-called survey teams. All stars with constant apparent brightness and those following known variability patterns are filtered out in order to detect the roughly 2000 microlensing events per year which are produced by stellar lenses. These microlensing events are identified "online" while still in their early phases and then monitored with much higher cadence by so-called follow-up teams. The most interesting of such events are those produced by a star-plus-planet lens. By now of order 30 exoplanets have been discovered by these combined microlensing surveys. Microlensing searches for extrasolar planets are complementary to other exoplanet search techniques. There are two particular advantages: The microlensing method is sensitive down to Earth-mass planets even with ground-based telecopes, and it

  12. The Impact of Discovering Life beyond Earth

    NASA Astrophysics Data System (ADS)

    Dick, Steven J.

    2015-10-01

    Introduction: astrobiology and society Steven J. Dick; Part I. Motivations and Approaches. How Do We Frame the Problems of Discovery and Impact?: Introduction; 1. Current approaches to finding life beyond earth, and what happens if we do Seth Shostak; 2. The philosophy of astrobiology: the Copernican and Darwinian presuppositions Iris Fry; 3. History, discovery, analogy: three approaches to the impact of discovering life beyond earth Steven J. Dick; 4. Silent impact: why the discovery of extraterrestrial life should be silent Clément Vidal; Part II. Transcending Anthropocentrism. How Do We Move beyond our Own Preconceptions of Life, Intelligence and Culture?: Introduction; 5. The landscape of life Dirk Schulze-Makuch; 6. The landscape of intelligence Lori Marino; 7. Universal biology: assessing universality from a single example Carlos Mariscal; 8. Equating culture, civilization, and moral development in imagining extraterrestrial intelligence: anthropocentric assumptions? John Traphagan; 9. Communicating with the other: infinity, geometry, and universal math and science Douglas Vakoch; Part III. Philosophical, Theological, and Moral Impact. How Do We Comprehend the Cultural Challenges Raised by Discovery?: Introduction; 10. Life, intelligence and the pursuit of value in cosmic evolution Mark Lupisella; 11. 'Klaatu barada nikto' - or, do they really think like us? Michael Ruse; 12. Alien minds Susan Schneider; 13. The moral subject of astrobiology: guideposts for exploring our ethical and political responsibilities towards extraterrestrial life Elspeth Wilson and Carol Cleland; 14. Astrobiology and theology Robin Lovin; 15. Would you baptize an extraterrestrial? Guy Consolmagno, SJ; Part IV. Practical Considerations: How Should Society Prepare for Discovery - and Non-Discovery?: Introduction; 16. Is there anything new about astrobiology and society? Jane Maienschein; 17. Evaluating preparedness for the discovery of extraterrestrial life: considering potential

  13. PSLQ: An Algorithm to Discover Integer Relations

    SciTech Connect

    Bailey, David H.; Borwein, J. M.

    2009-04-03

    Let x = (x{sub 1}, x{sub 2} {hor_ellipsis}, x{sub n}) be a vector of real or complex numbers. x is said to possess an integer relation if there exist integers a{sub i}, not all zero, such that a{sub 1}x{sub 1} + a{sub 2}x{sub 2} + {hor_ellipsis} + a{sub n}x{sub n} = 0. By an integer relation algorithm, we mean a practical computational scheme that can recover the vector of integers ai, if it exists, or can produce bounds within which no integer relation exists. As we will see in the examples below, an integer relation algorithm can be used to recognize a computed constant in terms of a formula involving known constants, or to discover an underlying relation between quantities that can be computed to high precision. At the present time, the most effective algorithm for integer relation detection is the 'PSLQ' algorithm of mathematician-sculptor Helaman Ferguson [10, 4]. Some efficient 'multi-level' implementations of PSLQ, as well as a variant of PSLQ that is well-suited for highly parallel computer systems, are given in [4]. PSLQ constructs a sequence of integer-valued matrices B{sub n} that reduces the vector y = xB{sub n}, until either the relation is found (as one of the columns of B{sub n}), or else precision is exhausted. At the same time, PSLQ generates a steadily growing bound on the size of any possible relation. When a relation is found, the size of smallest entry of the vector y abruptly drops to roughly 'epsilon' (i.e. 10{sup -p}, where p is the number of digits of precision). The size of this drop can be viewed as a 'confidence level' that the relation is real and not merely a numerical artifact - a drop of 20 or more orders of magnitude almost always indicates a real relation. Very high precision arithmetic must be used in PSLQ. If one wishes to recover a relation of length n, with coefficients of maximum size d digits, then the input vector x must be specified to at least nd digits, and one must employ nd-digit floating-point arithmetic. Maple and

  14. Using the World Wide Web with Adult ESL Learners. ERIC Digest.

    ERIC Educational Resources Information Center

    Silc, Kathleen Flannery

    This digest presents reasons for using World Wide Web activities in adult English-as-a-Second-Language (ESL) instruction. It addresses the issue of preparing learners to use the Web and suggests activities that focus on authentic learning experiences to enhance skills. Discussion is centered in skills developed through the World Wide Web,…

  15. Lurking and L2 Learners on a Facebook Group: The Voices of the Invisibles

    ERIC Educational Resources Information Center

    Shafie, Latisha Asmaak; Yaacob, Aizan; Singh, Paramjit Kaur Karpal

    2016-01-01

    This qualitative research investigates the practice of lurking among English as a second language (ESL) learners in a Facebook group discussion. Lurking is a term used to describe the activity of following and observing any online discussions or activities without contributing to the discussions. Lurkers are often accused of being invisible and…

  16. The Adult Learner Rediscovered: Psychiatry Residents' Push for Cognitive-Behavioral Therapy Training and a Learner-Driven Model of Educational Change

    ERIC Educational Resources Information Center

    Cassidy, Keri-Leigh

    2004-01-01

    Objective: This study surveyed residents' experiences learning an emerging area of demand in psychiatry at a time when there is a lag in training resources. Unexpectedly, the data generated useful evidence in support of adult learning theory. The result is a post hoc examination of learner attitudes and activities during the spread of a new…

  17. A Case Study of Peer Review Practices of Four Adolescent English Language Learners in Face-to-Face and Online Contexts

    ERIC Educational Resources Information Center

    Vorobel, Oksana

    2013-01-01

    Peer review is a complex collaborative activity, which may engage English language learners in reading, writing, listening, and speaking and carry many potential benefits for their language learning (Hu, 2005). While many research studies focused on peer review practices of adult language learners in academic settings in the USA or abroad in…

  18. Astronomers Discover Six-Image Gravitational Lens

    NASA Astrophysics Data System (ADS)

    2001-08-01

    An international team of astronomers has used the National Science Foundation's Very Long Baseline Array (VLBA) radio telescope and NASA's Hubble Space Telescope (HST) to discover the first gravitational lens in which the single image of a very distant galaxy has been split into six different images. The unique configuration is produced by the gravitational effect of three galaxies along the line of sight between the more-distant galaxy and Earth. Optical and Radio Images of Gravitational Lens "This is the first gravitational lens with more than four images of the background object that is produced by a small group of galaxies rather than a large cluster of galaxies," said David Rusin, who just received his Ph.D. from the University of Pennsylvania. "Such systems are expected to be extremely rare, so this discovery is an important stepping stone. Because this is an intermediate case between gravitational lenses produced by single galaxies and lenses produced by large clusters of galaxies, it will give us insights we can't get from other types of lenses," Rusin added. The gravitational lens, called CLASS B1359+154, consists of a galaxy more than 11 billion light-years away in the constellation Bootes, with a trio of galaxies more than 7 billion light-years away along the same line of sight. The more-distant galaxy shows signs that it contains a massive black hole at its core and also has regions in which new stars are forming. The gravitational effect of the intervening galaxies has caused the light and radio waves from the single, more-distant galaxy to be "bent" to form six images as seen from Earth. Four of these images appear outside the triangle formed by the three intermediate galaxies and two appear inside that triangle. "This lens system is a very interesting case to study because it is more complicated than lenses produced by single galaxies, and yet simpler than lenses produced by clusters of numerous galaxies," said Chris Kochanek of the Harvard

  19. ESA's Integral discovers hidden black holes

    NASA Astrophysics Data System (ADS)

    2003-10-01

    discovered so far? Astronomers, who have been observing the object regularly, guess that it had remained invisible because there must be a very thick shell of obscuring material surrounding it. If that was the case, only the most energetic radiation from the object could get through the shell; less-energetic radiation would be blocked. That could explain why space telescopes that are sensitive only to low-energy radiation had overlooked the object, while Integral, specialised in detecting very energetic emissions, did see it. To test their theory, astronomers turned to ESA's XMM-Newton space observatory, which observes the sky in the X-ray wavelengths. As well as being sensitive to high-energy radiation, XMM-Newton is also able to check for the presence of obscuring material. Indeed, XMM-Newton detected this object last February, as well as the existence of a dense 'cocoon' of cold gas with a diameter of similar size to that of the Earth's orbit around the Sun. This obscuring material forming the cocoon is probably 'stellar wind', namely gas ejected by the supermassive companion star. Astronomers think that this gas may be accreted by the compact black hole, forming a dense shell around it. This obscuring cloud traps most of the energy produced inside it. The main author of these results, Roland Walter of the Integral Science Data Centre, Switzerland, explained: "Only photons with the highest energies [above 10 keV] could escape from that cocoon. IGR J16318-4848 has therefore not been detected by surveys performed at lower energies, nor by previous gamma-ray missions that were much less sensitive than Integral." The question now is to find out how many of these objects lurk in the Galaxy. XMM-Newton and Integral together are the perfect tools to do the job. They have already discovered two more new sources embedded in obscuring material. Future observations are planned. Christoph Winkler, ESA Project Scientist for Integral, said: "These early examples of using two

  20. English Language Learners and English-Only Learners' Response to Direct Vocabulary Instruction

    ERIC Educational Resources Information Center

    Crevecoeur, Yvel C.; Coyne, Michael D.; McCoach, D. Betsy

    2014-01-01

    We examined data from an 18-week kindergarten vocabulary intervention study to determine whether treatment outcomes had differential effects that favored English language learners (ELLs) or English-only learners (EOLs) and whether the relationship between initial English general receptive vocabulary knowledge and response to vocabulary…

  1. The Positioning of Adult Learners: Appropriating Learner Experience on the Continuum of Empowerment to Emancipation

    ERIC Educational Resources Information Center

    Worthman, Christopher

    2008-01-01

    This article offers a critical analysis of discourses and power structures and the ways they operate in two instructors' adult education and ESOL classrooms. The instructors defined learner experience in specific ways and subsequently used those definitions and drew on their learners' experiences to define their curricula and pedagogy. They…

  2. An Analysis of Lexical Errors of Korean Language Learners: Some American College Learners' Case

    ERIC Educational Resources Information Center

    Kang, Manjin

    2014-01-01

    There has been a huge amount of research on errors of language learners. However, most of them have focused on syntactic errors and those about lexical errors are not found easily despite the importance of lexical learning for the language learners. The case is even rarer for Korean language. In line with this background, this study was designed…

  3. Learner-Oriented Virtual Learning: A Booster to Primary School Learners

    ERIC Educational Resources Information Center

    Singaravelu, G.

    2013-01-01

    The present study enlightens the impact of Learner- Oriented-Virtual Learning in enriching knowledge in Environmental Education at primary level.To achieve the expected competency in Biodiversity, various approaches were adopted in the class room transaction which were not fruitful. Hence the researcher practiced the Learner-Oriented-Virtual…

  4. Language and Reading Interventions for English Language Learners and English Language Learners with Disabilities

    ERIC Educational Resources Information Center

    Rivera, Mabel O.; Moughamian, Ani C.; Lesaux, Nonie K.; Francis, David J.

    2009-01-01

    This publication explores issues and makes recommendations related to meeting the needs of English learners with limited language proficiency or learning disabilities, or both. The authors begin by noting the current federal policy context in which this discussion of reading instruction and interventions for English language learners (ELLs)…

  5. Learner Resistance in Metacognition Training? An Exploration of Mismatches between Learner and Teacher Agendas

    ERIC Educational Resources Information Center

    Jing, Huang

    2006-01-01

    This paper examines how and why learner resistance (to the teacher's goals and expectations) occurred in a metacognition-training (MT) project, which aimed to enhance reflection and autonomy in EFL learning. MT was integrated into a regular EFL reading course for second-year BA TEFL undergraduates at a Chinese university. Learner resistance in the…

  6. ECG Rhythm Analysis with Expert and Learner-Generated Schemas in Novice Learners

    ERIC Educational Resources Information Center

    Blissett, Sarah; Cavalcanti, Rodrigo; Sibbald, Matthew

    2015-01-01

    Although instruction using expert-generated schemas is associated with higher diagnostic performance, implementation is resource intensive. Learner-generated schemas are an alternative, but may be limited by increases in cognitive load. We compared expert- and learner-generated schemas for learning ECG rhythm interpretation on diagnostic accuracy,…

  7. Investigating ESL Learners' Lexical Collocations: The Acquisition of Verb + Noun Collocations by Japanese Learners of English

    ERIC Educational Resources Information Center

    Miyakoshi, Tomoko

    2009-01-01

    Although it is widely acknowledged that collocations play an important part in second language learning, especially at intermediate-advanced levels, learners' difficulties with collocations have not been investigated in much detail so far. The present study examines ESL learners' use of verb-noun collocations, such as "take notes," "place an…

  8. 41 CFR 50-202.3 - Learners, student learners, apprentices, and handicapped workers.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... than the minimum wage prescribed in § 50-202.2 to the same extent such employment is permitted under... Management Other Provisions Relating to Public Contracts PUBLIC CONTRACTS, DEPARTMENT OF LABOR 202-MINIMUM WAGE DETERMINATIONS Groups of Industries § 50-202.3 Learners, student learners, apprentices,...

  9. 41 CFR 50-202.3 - Learners, student learners, apprentices, and handicapped workers.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... than the minimum wage prescribed in § 50-202.2 to the same extent such employment is permitted under... Management Other Provisions Relating to Public Contracts PUBLIC CONTRACTS, DEPARTMENT OF LABOR 202-MINIMUM WAGE DETERMINATIONS Groups of Industries § 50-202.3 Learners, student learners, apprentices,...

  10. 41 CFR 50-202.3 - Learners, student learners, apprentices, and handicapped workers.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... than the minimum wage prescribed in § 50-202.2 to the same extent such employment is permitted under... Management Other Provisions Relating to Public Contracts PUBLIC CONTRACTS, DEPARTMENT OF LABOR 202-MINIMUM WAGE DETERMINATIONS Groups of Industries § 50-202.3 Learners, student learners, apprentices,...

  11. 41 CFR 50-202.3 - Learners, student learners, apprentices, and handicapped workers.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... than the minimum wage prescribed in § 50-202.2 to the same extent such employment is permitted under... Management Other Provisions Relating to Public Contracts PUBLIC CONTRACTS, DEPARTMENT OF LABOR 202-MINIMUM WAGE DETERMINATIONS Groups of Industries § 50-202.3 Learners, student learners, apprentices,...

  12. 41 CFR 50-202.3 - Learners, student learners, apprentices, and handicapped workers.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... than the minimum wage prescribed in § 50-202.2 to the same extent such employment is permitted under... Management Other Provisions Relating to Public Contracts PUBLIC CONTRACTS, DEPARTMENT OF LABOR 202-MINIMUM WAGE DETERMINATIONS Groups of Industries § 50-202.3 Learners, student learners, apprentices,...

  13. Transformation in Higher Education: A Learner-Needs Segmentation Leads to Improved Learner Satisfaction

    ERIC Educational Resources Information Center

    Rogers, Gayla; Finley, Donna S.; Patterson, Margaret

    2006-01-01

    Segmentation is a marketing concept that can be applied in a post-secondary context. This article delineates the outcome of applying a learner-needs segmentation that resulted in significantly improved learner satisfaction scores in a professional faculty at a large public university. Our original work described the purpose and value of…

  14. Learner-Centered Teaching: The Core of Effective Practices for Adolescent English Language Learners

    ERIC Educational Resources Information Center

    Cloud, Nancy; Lakin, Judah; Leininger, Erin

    2011-01-01

    In this piece, a teacher educator and two secondary teachers describe how they implemented the Learners' Lives as Curriculum model (Weinstein, 2004) with adolescent English language learners using a unit from a pilot secondary curriculum titled Lives Unfolding (Weinstein & Cloud, 2007). They discuss the development and adaptation of the Names unit…

  15. English Learner and Non-English Learner Students with Disabilities: Content Acquisition and Comprehension

    ERIC Educational Resources Information Center

    Wanzek, Jeanne; Swanson, Elizabeth; Vaughn, Sharon; Roberts, Greg; Fall, Anna-Mária

    2016-01-01

    This study investigated the effects of Promoting Adolescent Comprehension Through Text (PACT), a content knowledge and comprehension treatment for English learner and non--English learner students with disabilities who were provided instruction in general education social studies classrooms. Eighth-grade students with disabilities in the treatment…

  16. Working Together Online to Enhance Learner Autonomy: Analysis of Learners' Perceptions of Their Online Learning Experience

    ERIC Educational Resources Information Center

    Eneau, Jerome; Develotte, Christine

    2012-01-01

    This study concerns the development of autonomy in adult learners working on an online learning platform as part of a professional master's degree programme in "French as a Foreign Language". Our goal was to identify the influence of reflective and collaborative dimensions on the construction of autonomy for online learners in this programme. The…

  17. Fostering Learner Autonomy: Power and Reciprocity in the Relationship between Language Learner and Language Learning Adviser

    ERIC Educational Resources Information Center

    Ciekanski, Maud

    2007-01-01

    Developments in lifelong learning and learner autonomy have given fresh impetus to the debate about learning without formal teaching. This paper concerns the educational relationship between learner and adviser in self-directed schemes. Two French self-directed language learning set-ups were observed, one situated at university level (Systeme…

  18. Learners' perceptions of learners regarded as having a homosexual orientation in an independent secondary school environment.

    PubMed

    Mostert, Hendrik P; Myburgh, Chris; Poggenpoel, Marie

    2012-01-01

    In schools today discrimination based on sexual orientation takes place on a regular basis. This form of discrimination leads to aggression towards learners perceived to be homosexual, as well as towards those with a homosexual orientation. For more than 15 years South Africa has been a democratic country with laws that protect learners who have a homosexual orientation. Nevertheless, aggression and discrimination towards these learners still occur in schools. Aggression often leads to verbal and physical bullying of the victims by perpetrators. The objectives of this research were to explore and describe Grade 11 learners' experiences of aggression towards learners perceived to be homosexual as well as those with a homosexual orientation in an independent secondary school environment. The research design was qualitative, exploratory, descriptive and contextual in nature. The data for this investigation consisted of essays based on a published newspaper photograph, phenomenological group interviews, observations and field notes. Tesch's method of data analysis was used, and an independent coder assisted. Three themes were identified, discussed and supported by a literature control: that learners experience that it is right and acceptable to have a homosexual orientation; that they experience ambivalence towards homosexual orientation of learners; and experienced feelings that it is wrong to have a homosexual orientation. Recommended guidelines are provided to address aggression towards learners perceived to be homosexual and those with a homosexual orientation.

  19. Status of teaching elementary science for English learners in science, mathematics and technology centered magnet schools

    NASA Astrophysics Data System (ADS)

    Han, Alyson Kim

    According to the California Commission on Teacher Credentialing (2001), one in three students speaks a language other than English. Additionally, the Commission stated that a student is considered to be an English learner if the second language acquisition is English. In California more than 1.4 million English learners enter school speaking a variety of languages, and this number continues to rise. There is an imminent need to promote instructional strategies that support this group of diverse learners. Although this was not a California study, the results derived from the nationwide participants' responses provided a congruent assessment of the basic need to provide effective science teaching strategies to all English learners. The purpose of this study was to examine the status of elementary science teaching practices used with English learners in kindergarten through fifth grade in public mathematics, science, and technology-centered elementary magnet schools throughout the country. This descriptive research was designed to provide current information and to identify trends in the areas of curriculum and instruction for English learners in science themed magnet schools. This report described the status of elementary (grades K-5) school science instruction for English learners based on the responses of 116 elementary school teachers: 59 grade K-2, and 57 grade 3-5 teachers. Current research-based approaches support incorporating self-directed learning strategy, expository teaching strategy, active listening strategies, questioning strategies, wait time strategy, small group strategy, peer tutoring strategy, large group learning strategy, demonstrations strategy, formal debates strategy, review sessions strategy, mediated conversation strategy, cooperative learning strategy, and theme-based instruction into the curriculum to assist English learners in science education. Science Technology Society (STS) strategy, problem-based learning strategy, discovery learning

  20. Spirit Discovers New Class of Igneous Rocks

    NASA Technical Reports Server (NTRS)

    2006-01-01

    . %' indicates that the numbers tell what percentage of the total weight of each rock is silica (on the horizontal scale) and what percentage is oxides of sodium and potassium (on the vertical scale). The thin lines separate volcanic rock types identified on Earth by different scientific names such as foidite and picrobasalt. Various classes of Gusev rocks (see box in upper right) all plot either on or to the left of the green lines, which define 'alkaline' and 'subalkaline' categories (subalkaline rocks have more silica than alkaline rocks).

    Members of the rover team have named different classes of rocks after specimens examined by Spirit that represent their overall character. During the rover's travels, Spirit discovered that Adirondack-class rocks littered the Gusev plains; that Backstay, Irvine, and Wishstone-class rocks occurred as loose blocks on the northwest slope of 'Husband Hill'; and that outcrops of Algonquin-class rocks protruded in several places on the southeast face.

    These rocks have less silica than all previously analyzed Mars samples, which are subalkaline. The previously analyzed Mars samples include Martian meteorites found on Earth and rocks analyzed by the Mars Pathfinder rover in 1997. Gusev is the first documented example of an alkaline igneous province on Mars.