Science.gov

Sample records for activity learners discover

  1. 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…

  2. 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…

  3. 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,…

  4. 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

  5. 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…

  6. 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.

  7. Learner Activities in a Collaborative CALL Task

    ERIC Educational Resources Information Center

    Leahy, C.

    2008-01-01

    This paper briefly discusses different research approaches in CALL and makes a case for applying grounded theory (GT) to data gathered from an electronic role-play conducted in L2. The article shows that this method can help gain a better understanding of what learners do when engaged in the task. Through the process of open coding, four…

  8. 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…

  9. 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…

  10. 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…

  11. 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…

  12. 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…

  13. 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

  14. 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.)

  15. Learners' Perceptions of Instructional Design Practice in a Situated Learning Activity

    ERIC Educational Resources Information Center

    Woolf, Nicholas; Quinn, James

    2009-01-01

    This case study investigated learners' perceptions of value from participating in a learning activity designed to model professional instructional design practice. Learners developed instructional design products for a corporate client in the context of a classroom-based course. The findings indicate that learners perceived different kinds of…

  16. 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…

  17. Textbook Activities among Heritage and Non-Heritage Portuguese Learners

    ERIC Educational Resources Information Center

    Silva, Glaucia V.

    2011-01-01

    Over the past four decades, scholars have debated the pedagogical and sociolinguistic needs of heritage language learners. It is widely accepted that these learners present several characteristics that are different from those of foreign (or non-heritage) language learners. However, scholars have also pointed to similarities between the two groups…

  18. Does Active Learning Enhance Learner Outcomes? Evidence from Discussion Participation in Online Classes

    ERIC Educational Resources Information Center

    Wilson, Bruce M.; Pollock, Philip H.; Hamann, Kerstin

    2007-01-01

    Discussion is one form of active learning, which has been linked to better learner outcomes. Little is known about the relationship between active learning through discussion and learner outcome in the online environment. Here, we construct an index of active learning online that includes the number of postings a student has read, the number of…

  19. 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.

  20. 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…

  1. 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

  2. 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…

  3. 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…

  4. 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…

  5. Spoken Language Activation Alters Subsequent Sign Language Activation in L2 Learners of American Sign Language.

    PubMed

    Williams, Joshua T; Newman, Sharlene D

    2017-02-01

    A large body of literature has characterized unimodal monolingual and bilingual lexicons and how neighborhood density affects lexical access; however there have been relatively fewer studies that generalize these findings to bimodal (M2) second language (L2) learners of sign languages. The goal of the current study was to investigate parallel language activation in M2L2 learners of sign language and to characterize the influence of spoken language and sign language neighborhood density on the activation of ASL signs. A priming paradigm was used in which the neighbors of the sign target were activated with a spoken English word and compared the activation of the targets in sparse and dense neighborhoods. Neighborhood density effects in auditory primed lexical decision task were then compared to previous reports of native deaf signers who were only processing sign language. Results indicated reversed neighborhood density effects in M2L2 learners relative to those in deaf signers such that there were inhibitory effects of handshape density and facilitatory effects of location density. Additionally, increased inhibition for signs in dense handshape neighborhoods was greater for high proficiency L2 learners. These findings support recent models of the hearing bimodal bilingual lexicon, which posit lateral links between spoken language and sign language lexical representations.

  6. 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…

  7. From the Sidelines to Center Stage: Opportunities to Discover Voice and Empowerment through Web 2.0 and New Media for LGBTQ Adult Learners

    ERIC Educational Resources Information Center

    King, Kathleen P.

    2009-01-01

    While many adult learners may feel hesitant to voice their opinions in a classroom, lesbian, gay, bisexual, transgender, and queer (LGBTQ) adults are especially aware that they are functioning in a critical, heteronormative society. However, in a climate of respect and safety they can gain confidence in sharing their true selves and opinions. An…

  8. 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.

  9. 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)

  10. 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…

  11. What Does Metalinguistic Activity in Learners' Interaction during a Collaborative L2 Writing Task Look Like?

    ERIC Educational Resources Information Center

    Gutierrez, Xavier

    2008-01-01

    This article examines the metalinguistic activity that arose in the interaction of 7 groups of bilingual learners writing collaboratively in their second language (L2), English. A microanalysis of this interaction reveals that metalinguistic activity comprises 3 types of oral production: comments, speech actions, and text reformulations. Text…

  12. The Effects of Pre-Reading Activities on Reading Comprehension of Iranian EFL Learners

    ERIC Educational Resources Information Center

    Moghaddam, Nahid Nemati; Mahmoudi, Asgar

    2016-01-01

    This study investigated the effects of three types of pre-reading activities (movie-watching, vocabulary presentation, and pre-reading summarization) on the reading comprehension of 76 elementary-level EFL Iranian learners. The participants were randomly assigned to one control and three experimental conditions and then a pretest was given to…

  13. 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…

  14. 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.

  15. 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)

  16. 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,…

  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. 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…

  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. 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

  1. 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…

  2. 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

    2015-08-06

    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).

  3. 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.

  4. 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…

  5. Scientists Discover Supernova May Control Activity in the Center of Our Galaxy

    NASA Astrophysics Data System (ADS)

    2001-02-01

    10 January 2001 -- Scientists using NASA's Chandra X-ray Observatory have discovered that an apparent supernova remnant in the center of our galaxy might help regulate a nearby supermassive black hole and that such relationships between supernova remnants and black holes might be common throughout the universe. The scientists studied Sagittarius A East, previously known by its ring-shaped radio emission, located nearly 26,000 light years from Earth in the constellation Sagittarius. Sgr A East appears to surround the black hole Sagittarius A* (denoted with an asterisk because it is a point source that emits radio waves) with its center offset by about six light years from that of the black hole. Using Chandra, scientists were able to separate Sgr A East from other complex structures for the first time in X-ray wavelengths. The properties they discovered support the long-standing hypothesis that Sgr A East is a single supernova remnant that exploded about 10,000 years ago. "With Chandra, we found hot gas concentrated within the larger radio shell of Sgr A East," said Yoshitomo Maeda, an astronomy and astrophysics research associate at Penn State who presented the research team's results at the 197th national meeting of the American Astronomical Society in San Diego, California, on 10 January 2001. "The gas is highly enriched by heavy elements, with four times more calcium and iron than the Sun, and that confirms earlier suspicions that Sgr A East is most likely a remnant of a supernova explosion. While dozens of supernova remnants are known in our galaxy, the proximity of Sgr A East to the black hole in the center of our galaxy makes it important." After a supernova explosion, scientists believe two shock waves are formed, with one moving inward and one outward. The inward shock wave heated up the ejecta that was detected with X-rays by the Advanced CCD Imaging Spectrometer (ACIS) aboard Chandra. The temperature of gas in that shock wave was measured at 20 million

  6. 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.

  7. 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…

  8. 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…

  9. 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.

  10. 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.

  11. 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…

  12. 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…

  13. Determination of the origin of the medieval glass bracelets discovered in Dubna, Moscow region, Russia using the neutron activation analysis

    NASA Astrophysics Data System (ADS)

    Dmitrieva, S. O.; Frontasyeva, M. V.; Dmitriev, A. A.; Dmitriev, A. Yu.

    2017-01-01

    The work is dedicated to the determination of the origin of archaeological finds from medieval glass using the method of neutron activation analysis (NAA). Among such objects we can discover not only things produced in ancient Russian glassmaking workshops but also imported from Byzantium. The authors substantiate the ancient Russian origin of the medieval glass bracelets of pre-Mongol period, found on the ancient Dubna settlement. The conclusions are based on data about the glass chemical composition obtained as a result of NAA of 10 fragments of bracelets at the IBR-2 reactor (Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research).

  14. 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…

  15. Spoken Language Activation Alters Subsequent Sign Language Activation in L2 Learners of American Sign Language

    ERIC Educational Resources Information Center

    Williams, Joshua T.; Newman, Sharlene D.

    2017-01-01

    A large body of literature has characterized unimodal monolingual and bilingual lexicons and how neighborhood density affects lexical access; however there have been relatively fewer studies that generalize these findings to bimodal (M2) second language (L2) learners of sign languages. The goal of the current study was to investigate parallel…

  16. Activity-based probes for rhomboid proteases discovered in a mass spectrometry-based assay

    PubMed Central

    Vosyka, Oliver; Vinothkumar, Kutti R.; Wolf, Eliane V.; Brouwer, Arwin J.; Liskamp, Rob M. J.; Verhelst, Steven H. L.

    2013-01-01

    Rhomboid proteases are evolutionary conserved intramembrane serine proteases. Because of their emerging role in many important biological pathways, rhomboids are potential drug targets. Unfortunately, few chemical tools are available for their study. Here, we describe a mass spectrometry-based assay to measure rhomboid substrate cleavage and inhibition. We have identified isocoumarin inhibitors and developed activity-based probes for rhomboid proteases. The probes can distinguish between active and inactive rhomboids due to covalent, reversible binding of the active-site serine and stable modification of a histidine residue. Finally, the structure of an isocoumarin-based inhibitor with Escherichia coli rhomboid GlpG uncovers an unusual mode of binding at the active site and suggests that the interactions between the 3-substituent on the isocoumarin inhibitor and hydrophobic residues on the protease reflect S′ subsite binding. Overall, these probes represent valuable tools for rhomboid study, and the structural insights may facilitate future inhibitor design. PMID:23359682

  17. 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.

  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. Solar Dynamics Observatory Discovers Thin High Temperature Strands in Coronal Active Regions

    NASA Astrophysics Data System (ADS)

    Reale, Fabio; Guarrasi, Massimiliano; Testa, Paola; DeLuca, Edward E.; Peres, Giovanni; Golub, Leon

    2011-07-01

    One scenario proposed to explain the million degree solar corona is a finely stranded corona where each strand is heated by a rapid pulse. However, such fine structure has neither been resolved through direct imaging observations nor conclusively shown through indirect observations of extended superhot plasma. Recently, it has been shown that the observed difference in the appearance of cool and warm coronal loops (~1 MK and ~2-3 MK, respectively)—warm loops appearing "fuzzier" than cool loops—can be explained by models of loops composed of subarcsecond strands, which are impulsively heated up to ~10 MK. That work predicts that images of hot coronal loops (gsim 6 MK) should again show fine structure. Here we show that the predicted effect is indeed widely observed in an active region with the Solar Dynamics Observatory, thus supporting a scenario where impulsive heating of fine loop strands plays an important role in powering the active corona.

  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. The challenge of "teaching" large groups of learners: strategies to increase active participation and learning.

    PubMed

    Nierenberg, D W

    1998-01-01

    While teaching in a tutorial, seminar, or problem-based learning group format may be the most fun and most active/interactive for both learner and faculty mentor, there are situations in medical student education in which various constraints require the use of the "lecture" format. Similar constraints may occur in the field of continuing medical education, or graduate medical education, as well. When this occurs, the faculty mentor can increase the active participation of the learners in the audience by continuously stressing seven key pedagogical (androgogical) principles. These include: 1) begin the learning exercise with a clinical example or anecdote to show the relevance of the material to the student; 2) frequently ask the students whether they have ever seen examples of what you describe in their previous experience with patients, personal experience, experience with relatives, etc.; 3) ask students frequently whether they have heard similar material presented differently in other courses; 4) recruit students to help solve "mystery cases"; 5) show examples of similar material from real life (e.g., patient descriptions, or even excerpts from favorite TV shows); 6) ask students to help summarize key points at the end of the session; and 7) allow, or even encourage, whispering during the class. Using some or all of these techniques can help turn a "lecture format" into a much more fun, interactive, and valuable session that emphasizes "learning" rather than "teaching."

  2. College Centers for Older Learners.

    ERIC Educational Resources Information Center

    Smith, Judith L.

    Across the nation, colleges are discovering a new group of students: retired learners. Special programs are emerging to meet the unique needs and interests of this mature population. This booklet describes these programs under the generic title, College Centers for Older Learners (CCOLs). CCOLs offer a stimulating college environment for older…

  3. 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.

  4. 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

  5. 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.

  6. 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.

  7. [Increased activated partial thrombin time: analysis of 250 cases discovered at laboratory].

    PubMed

    Freyburger, G; Janvier, G; De Cacqueray, C; Dief, S; Negrery, H; Drouillard, B

    1991-01-01

    This study evaluates and discusses the potential utility (clinical value) of complementary coagulation tests performed in cases with a prolonged aPTT of no obvious etiology from a total of 85,500 routine coagulation tests carried out in our general hospital. aPTT was measured using Actin F.S.L. (Dade, plant-derived and rabbit phospholipids complex with ellagic acid as activator) and Diagen (Biotrol, rabbit phospholipids with kaolin). Tests for acquired anticoagulants and endogenous pathway factors (XII, XI, IX, VIII) were assayed if the aPTT was prolonged by 7 sec or more. 250 abnormal aPTT of previously unknown etiology were found over a 14 months period. 46% of them were without any obvious cause, and were considered "spontaneous" increases: 2/3 of these spontaneous increases were 7-9 (group A), and 1/3 were 10-19 (group B). The diagnoses found in group A were mostly deficits in the contact system, while group B contained mostly cases with acquired anticoagulants and deficits in the contact system. In group C (increases over 20"), an etiology could be established in all cases, with a predominance of acquired anticoagulants and some deficits in factors VIII and XII.

  8. Report on maloine, a new alkaloid discovered from G. maloi: Structural characterization and biological activity

    NASA Astrophysics Data System (ADS)

    Çela, Dorisa; Nepravishta, Ridvan; Lazari, Diamanto; Gaziano, Roberta; Moroni, Gabriella; Pica, Francesca; Paci, Maurizio; Abazi, Sokol

    2017-02-01

    Gymnospermium maloi Kit Tan, & Shuka is a new endemic species of the genus Gymnospermium Spach which has been described recently from the southern part of Albania. The members of this genus are poorly studied for what it concern the secondary metabolites in general and the class of alkaloids in particular. In fact from Gymnospermium genus, there are only few alkaloids characterized, (namely albertramine, albertidine, and albertine) isolated from G. albertii. Until now the chemical composition and the structure elucidation of other possible secondary metabolites, especially alkaloids, remain largely unknown. Here we report, for the first time, the structure of a new alkaloid isolated from G. maloi, designated by us as maloine, and obtained by the use of 2D homonuclear and heteronuclear NMR spectroscopy, FTIR, UV, Fluorescence and HPLC/MS spectra. The biological activity of the crude extract of Gymnospermium maloi and of its alkaloid maloine, was evaluated in vitro on human chronic myeloid leukemia cell line K562 and results herewith reported.

  9. The 20S Proteasome Splicing Activity Discovered by SpliceMet

    PubMed Central

    Textoris-Taube, Kathrin; Janek, Katharina; Keller, Christin; Henklein, Petra; Kloetzel, Peter Michael; Zaikin, Alexey

    2010-01-01

    The identification of proteasome-generated spliced peptides (PSP) revealed a new unpredicted activity of the major cellular protease. However, so far characterization of PSP was entirely dependent on the availability of patient-derived cytotoxic CD8+ T lymphocytes (CTL) thus preventing a systematic investigation of proteasome-catalyzed peptide splicing (PCPS). For an unrestricted PSP identification we here developed SpliceMet, combining the computer-based algorithm ProteaJ with in vitro proteasomal degradation assays and mass spectrometry. By applying SpliceMet for the analysis of proteasomal processing products of four different substrate polypeptides, derived from human tumor as well as viral antigens, we identified fifteen new spliced peptides generated by PCPS either by cis or from two separate substrate molecules, i.e., by trans splicing. Our data suggest that 20S proteasomes represent a molecular machine that, due to its catalytic and structural properties, facilitates the generation of spliced peptides, thereby providing a pool of qualitatively new peptides from which functionally relevant products may be selected. PMID:20613855

  10. Chinese High-School Students in Physics Classroom as Active, Self-Regulated Learners: Cognitive, Motivational and Environmental Aspects

    ERIC Educational Resources Information Center

    Neber, Heinz; He, Jing; Liu, Bang-Xiang; Schofield, Neville

    2008-01-01

    The present study investigates whether Chinese high-school students are self-regulated learners. A social-cognitive model that distinguishes environmental, motivational, and cognitive components of this active approach to learning is described. This provides an appropriate framework for investigating this complex issue with eighth and tenth…

  11. 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…

  12. 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.…

  13. 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…

  14. 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…

  15. 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…

  16. 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)

  17. Using Web-Based Instruction to Promote Active Learning: Learners' Perspectives

    ERIC Educational Resources Information Center

    Lee, Lina

    2005-01-01

    This article reports classroom research on learners' perspectives on Web-based instruction that utilizes the "Blackboard" course management system. The Web-based instruction aims to provide and support collaborative learning while fostering learners' autonomy and accountability. The article also provides a description of the course…

  18. Elementary School EFL Learners' Vocabulary Learning: The Effects of Post-Reading Activities

    ERIC Educational Resources Information Center

    Atay, Derin; Kurt, Gokce

    2006-01-01

    As language learning involves the acquisition of thousands of words, teachers and learners alike would like to know how vocabulary learning can be fostered, especially in EFL settings where learners frequently acquire impoverished lexicons, despite years of formal study. Research indicates that reading is important but not sufficient for…

  19. Creative, Kinesthetic Activities to Motivate Young Learners to Communicate: A Conversation with Paula Garrett-Rucks

    ERIC Educational Resources Information Center

    Devall, Kelly Davidson

    2015-01-01

    This article presents a question and answer session in which Paula Garrett-Rucks discusses how creativity and kinesthetics motivate young language learners, the type of characteristics she might consider for different age groups in planning lessons, her views on the goals of world language teachers of young learners, and what a typical lesson…

  20. 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)…

  1. 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…

  2. 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…

  3. Mediated Vocabulary in Native Speaker-Learner Interactions during an Oral Portfolio Activity

    ERIC Educational Resources Information Center

    Tocaimaza-Hatch, C. Cecilia

    2016-01-01

    This project investigated vocabulary learning from a sociocultural perspective--in particular, the way in which lexical knowledge was mediated in Spanish second language (L2) learners' and native speakers' (NSs') interactions. Nine students who were enrolled in an advanced conversation course completed an oral portfolio assignment consisting of…

  4. 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…

  5. 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.

  6. 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…

  7. 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…

  8. 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,…

  9. Autonomous Learner Model Resource Book

    ERIC Educational Resources Information Center

    Betts, George T.; Carey, Robin J.; Kapushion, Blanche M.

    2016-01-01

    "Autonomous Learner Model Resource Book" includes activities and strategies to support the development of autonomous learners. More than 40 activities are included, all geared to the emotional, social, cognitive, and physical development of students. Teachers may use these activities and strategies with the entire class, small groups, or…

  10. A Decade of Research on TLR2 Discovering Its Pivotal Role in Glial Activation and Neuroinflammation in Neurodegenerative Diseases

    PubMed Central

    Hayward, Jin Hee

    2014-01-01

    Toll-like receptors (TLRs) belong to a class of pattern recognition receptors that play an important role in host defense against pathogens. TLRs on innate immune cells recognize a wide variety of pathogen-associated molecular patterns (PAMPs) and trigger innate immune responses. Later, it was revealed that the same receptors are also utilized to detect tissue damage to trigger inflammatory responses in the context of non-infectious inflammation. In the nervous system, different members of the TLR family are expressed on glial cells including astrocytes, microglia, oligodendrocytes, and Schwann cells, implicating their putative role in innate/inflammatory responses in the nervous system. In this regard, we have investigated the function of TLRs in neuroinflammation. We discovered that a specific member of the TLR family, namely TLR2, functions as a master sentry receptor to detect neuronal cell death and tissue damage in many different neurological conditions including nerve transection injury, intracerebral hemorrhage, traumatic brain injury, and hippocampal excitotoxicity. In this review, we have summarized our research for the last decade on the role of TLR2 in neuroinflammation in the above neurological disorders. Our data suggest that TLR2 can be an efficient target to regulate unwanted inflammatory response in these neurological conditions. PMID:24963278

  11. Bioprofiling of Surface/Wastewater and Bioquantitation of Discovered Endocrine-Active Compounds by Streamlined Direct Bioautography.

    PubMed

    Klingelhöfer, Ines; Morlock, Gertrud E

    2015-11-03

    A direct bioautography has been used for the simultaneous determination of four estrogens [estrone (E1), 17β-estradiol (E2), estriol (E3), and 17α-ethinylestradiol (EE2)] and two xenoestrogens [bisphenol A (BPA) and 4-n-nonyl-phenol (NP)] in surface water and wastewater samples from a sewage treatment plant. After either direct application or a liquid-liquid extraction of the water samples, the qualitative and quantitative detection of estrogen-effective compounds was performed with a planar yeast estrogen screen. The limits of detection were different for each compound, due to the specific receptor binding of individual (xeno)estrogens (1 ng/L to 15 μg/L). The mean recovery rate for all six substances at this ultratrace level was 88% [mean percent relative standard deviation (%RSD) of 17%, n = 3]. Over the whole procedure, precisions of three estrogens discovered in a wastewater sample were below 17%, n = 3. The identification of the detected bioactive compounds was performed by high-performance thin-layer chromatography-electrospray ionization mass spectrometry (HPTLC-ESI-MS) via the elution-head-based TLC-MS Interface. Whereas the estrogens E1 and E2 could always be detected in the influent of the treatment plant, E3 was detected occasionally. The concentrations of E1 and E2 ranged from 3 to 50 ng/L, and for E3 from 98 to 210 ng/L. EE2, BPA, and NP could not be detected at the given LOD. In every second surface water sample, E1 and E2 were detected, but not E3, EE2, BPA, and NP.

  12. 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…

  13. The Effectiveness of DISCOVER.

    ERIC Educational Resources Information Center

    Engel, Elaine Frances

    Computer assisted career guidance (CACG) systems have been around for at least the past 20 years in career guidance centers. There are two types of systems: information retrieval and guidance interaction. This study investigated the effectiveness of DISCOVER in facilitating career decisions among college students. DISCOVER is a systematic career…

  14. 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)

  15. Communicative Language Teaching: The Learner's View.

    ERIC Educational Resources Information Center

    Nunan, David

    Several studies of the differences in teacher and learner perceptions of the usefulness of certain teaching techniques and activities reveal clear mismatches between learners' and teachers' views of language learning. The differences seem to be due to the sociocultural background and previous learning experiences of the learners and the influence…

  16. 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)

  17. 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…

  18. Effects of an Online Learning Community on Active and Reflective Learners' Learning Performance and Attitudes in a Face-to-Face Undergraduate Course

    ERIC Educational Resources Information Center

    Zhan, Zehui; Xu, Fuyin; Ye, Huiwen

    2011-01-01

    The purpose of this study was to examine the effects of an Online Learning Community (OLC) on active and reflective learners' learning performance and attitude in a face-to-face undergraduate digital design course. 814 freshmen in an introductory digital design course were randomly assigned to one of two treatments: one offered students an OLC,…

  19. Exploring Work-Based Foundation Skills in the ABLE Classroom. Instructional Activities and Resources for the Adult Learner [and] Supplemental Handouts for Modules. Version 1.2.

    ERIC Educational Resources Information Center

    Carman, Priscilla; Van Horn, Barbara; Hamilton, KayLynn; Williams, Mary Kay

    This guide contains activities and resources to help adult learners develop the work-based foundation skills and knowledge areas included on the Foundation Skills Framework wheel (Institute for the Study of Adult Literacy 2000). Its four sections (basic employability skills, basic workplace knowledge, basic workplace skills, and lifelong learning…

  20. 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.…

  1. 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.

  2. 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

  3. "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…

  4. Reaching English Language Learners

    ERIC Educational Resources Information Center

    Keenan, Suzanne

    2004-01-01

    In the authors' science classroom, students who are English Language Learners (ELL) seem to struggle less than they do with other content areas. She believes the "handson" nature of science motivates and encourages students to interact with others. This interaction spurs conversation among the students involved in the activity. If a child is…

  5. 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.

  6. Empowering Learners

    ERIC Educational Resources Information Center

    Franklin, Pat; Stephens, Claire Gatrell

    2010-01-01

    Turning students into lifelong learners is not easily accomplished. How do school librarians ensure that students have a zeal for learning? How do they encourage, cajole, or entice students to want to learn? The answer lies in empowering students with the skills they need to enjoy researching as well as reading for information and pleasure. This…

  7. 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.

  8. 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…

  9. Student Activities, Electronic Learners, and the Future: Integrating a Technological Component into Your Role as an Advisor.

    ERIC Educational Resources Information Center

    Simon, Jason Foster

    1996-01-01

    Provides advice to faculty advisers of student organizations on understanding the learning styles, needs, cultures, and strengths of today's "electronic learners." Advisers need to understand technology-related learning patterns and become technologically literate to work with college students. (MDM)

  10. Selected Characteristics of Preservice Teachers as Learners. Teacher Education Forum; Volume 3, Number 15.

    ERIC Educational Resources Information Center

    Marks, Sue; Gregory, Thomas B.

    Twelve learner characteristics and 26 demographic characteristics of entering preservice teachers were investigated to determine if the presumption of homogeneity was valid in relation to selected learner characteristics and to discover which, if any, demographic characteristics could serve as predictors of learner characteristics. The study also…

  11. 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…

  12. Discovering Hidden Voices.

    ERIC Educational Resources Information Center

    Collins, Carol

    1991-01-01

    Working with teachers and artists from Florida to Maine, a drama educator has discovered that creative power and insight can emerge when using drama in the language arts classroom. One seventh-grade class began with simple warm-ups to loosen inhibitions and then moved into a unit that dealt with improvising using movement. A student who had hardly…

  13. DISCOVER-AQ

    Atmospheric Science Data Center

    2017-01-31

    ... DISCOVER-AQ ) is a four-year campaign to improve the use of satellites to monitor air quality for public health and environmental benefit. ... will enable more effective use of current and future satellites to diagnose ground level conditions influencing air quality. ...

  14. A proteomics strategy to discover beta-glucosidases from Aspergillus fumigatus with two-dimensional page in-gel activity assay and tandem mass spectrometry.

    PubMed

    Kim, Kee-Hong; Brown, Kimberly M; Harris, Paul V; Langston, James A; Cherry, Joel R

    2007-12-01

    Economically competitive production of ethanol from lignocellulosic biomass by enzymatic hydrolysis and fermentation is currently limited, in part, by the relatively high cost and low efficiency of the enzymes required to hydrolyze cellulose to fermentable sugars. Discovery of novel cellulases with greater activity could be a critical step in overcoming this cost barrier. beta-Glucosidase catalyzes the final step in conversion of glucose polymers to glucose. Despite the importance, only a few beta-glucosidases are commercially available, and more efficient ones are clearly needed. We developed a proteomics strategy aiming to discover beta-glucosidases present in the secreted proteome of the cellulose-degrading fungus Aspergillus fumigatus. With the use of partial or complete protein denaturing conditions, the secretory proteome was fractionated in a 2DGE format and beta-glucosidase activity was detected in the gel after infusion with a substrate analogue that fluoresces upon hydrolysis. Fluorescing spots were subjected to tryptic-digestion, and identification as beta-glucosidases was confirmed by tandem mass spectrometry. Two novel beta-glucosidases of A. fumigatus were identified by this in situ activity staining method, and the gene coding for a novel beta-glucosidase ( EAL88289 ) was cloned and heterologously expressed. The expressed beta-glucosidase showed far superior heat stability to the previously characterized beta-glucosidases of Aspergillus niger and Aspergillus oryzae. Improved heat stability is important for development of the next generation of saccharifying enzymes capable of performing fast cellulose hydrolysis reactions at elevated temperatures, thereby lowering the cost of bioethanol production. The in situ activity staining approach described here would be a useful tool for cataloguing and assessing the efficiency of beta-glucosidases in a high throughput fashion.

  15. 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…

  16. Hippocampus activity differentiates good from poor learners of a novel lexicon.

    PubMed

    Breitenstein, Caterina; Jansen, Andreas; Deppe, Michael; Foerster, Ann-Freya; Sommer, Jens; Wolbers, Thomas; Knecht, Stefan

    2005-04-15

    Language proficiency is a key to academic and workplace success for native and non-native speakers. It is largely unknown, however, why some people pick up languages more easily than others. We used event-related functional magnetic resonance imaging (e-fMRI) to elucidate which brain regions are modulated during the acquisition of a novel lexicon and which of these learning-related activity changes correlated with general semantic language knowledge. Fourteen healthy young subjects learned a novel vocabulary of 45 concrete nouns via an associative learning principle over the course of five blocks during e-fMRI. As a control condition, subjects took part in a structurally identical "No-Learning" condition lacking any learning principle. Overall, increasing vocabulary proficiency was associated with (intercorrelated) modulations of activity within the left hippocampus and the left fusiform gyrus, regions involved in the binding and integration of multimodal stimuli, and with an increasing activation of the left inferior parietal cortex, the presumed neural store of phonological associations. None of these activity changes were observed during the control condition. Furthermore, subjects who showed less suppression of hippocampal activity over learning blocks scored higher on semantic knowledge in their native language and learned the novel vocabulary more efficiently. Our findings indicate that (a) the successful acquisition of a new lexicon depends on correlated amplitude changes between the left hippocampus and neocortical regions and (b) learning-related hippocampus activity is a stable marker of individual differences in the ability to acquire and master vocabularies.

  17. 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

  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. Effective instruction for English learners.

    PubMed

    Calderón, Margarita; Slavin, Robert; Sánchez, Marta

    2011-01-01

    . As larger numbers of English learners reach America's schools, K-12 general education teachers are discovering the need to learn how to teach these students. Schools must improve the skills of all educators through comprehensive professional development-an ambitious but necessary undertaking that requires appropriate funding.

  20. Collaborative Syntactic Priming Activities and EFL Learners' Production of Wh-questions

    ERIC Educational Resources Information Center

    McDonough, Kim; Chaikitmongkol, Wanpen

    2010-01-01

    Syntactic priming is the tendency for a speaker to produce a structure that was encountered in recent discourse and is measured by calculating how frequently speakers use the modelled structures as opposed to alternatives. Recent lab-based studies have shown that carrying out syntactic priming activities with trained interlocutors positively…

  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…

  3. 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…

  4. 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'…

  5. Helping Language Learners Think about Learning.

    ERIC Educational Resources Information Center

    Wenden, Anita

    1986-01-01

    Describes the beliefs about how to learn a second language held by 34 adults studying English as a second language and how these beliefs may influence what they do to learn. Describes eight modules designed to help these learners discover their own beliefs and consider alternative views. (SED)

  6. Do ePortfolios Contribute to Learners' Reflective Thinking Activities? : A Preliminary Study of Nursing Staff Users.

    PubMed

    Tzeng, Wen-Sheng; Kuo, Kuang-Ming; Talley, Paul C; Chen, Hsiu-Chin; Wang, Jhi-Joung

    2015-09-01

    The purposes of this study are threefold: 1) to find out what characteristics are required for the successful use of ePortfolios; 2) to discover what activities best represent reflective thinking during the use of ePortfolios; and, 3) to investigate the interrelationship between nursing staff users' perceived success levels with ePortfolios and with their reflective thinking activities. Survey methodology was used to gather responses from 78 nurses from a medical center located in southern Taiwan via questionnaires. Factor analysis and canonical correlation analysis were used to analyze the collected data. The results demonstrated that system quality, information quality, and user satisfaction are important variables in successful ePortfolio usage; while habitual action, understanding, reflection, and critical reflection are major variables of reflective thinking. Further, we found a significant relationship exists between the relative success of ePortfolios and reflective thinking activities of ePortfolios users. The subject hospital should pay special attention to important characteristics including system quality, information quality, and user satisfaction when employing ePortfolios to help nursing staff users to achieve their learning goals through this form of reflective thinking.

  7. Students Discover Unique Planet

    NASA Astrophysics Data System (ADS)

    2008-12-01

    Three undergraduate students, from Leiden University in the Netherlands, have discovered an extrasolar planet. The extraordinary find, which turned up during their research project, is about five times as massive as Jupiter. This is also the first planet discovered orbiting a fast-rotating hot star. Omega Centauri ESO PR Photo 45a/08 A planet around a hot star The students were testing a method of investigating the light fluctuations of thousands of stars in the OGLE database in an automated way. The brightness of one of the stars was found to decrease for two hours every 2.5 days by about one percent. Follow-up observations, taken with ESO's Very Large Telescope in Chile, confirmed that this phenomenon is caused by a planet passing in front of the star, blocking part of the starlight at regular intervals. According to Ignas Snellen, supervisor of the research project, the discovery was a complete surprise. "The project was actually meant to teach the students how to develop search algorithms. But they did so well that there was time to test their algorithm on a so far unexplored database. At some point they came into my office and showed me this light curve. I was completely taken aback!" The students, Meta de Hoon, Remco van der Burg, and Francis Vuijsje, are very enthusiastic. "It is exciting not just to find a planet, but to find one as unusual as this one; it turns out to be the first planet discovered around a fast rotating star, and it's also the hottest star found with a planet," says Meta. "The computer needed more than a thousand hours to do all the calculations," continues Remco. The planet is given the prosaic name OGLE2-TR-L9b. "But amongst ourselves we call it ReMeFra-1, after Remco, Meta, and myself," says Francis. The planet was discovered by looking at the brightness variations of about 15 700 stars, which had been observed by the OGLE survey once or twice per night for about four years between 1997 and 2000. Because the data had been made public

  8. 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.

  9. 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; ...

    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

  10. Merger-driven Fueling of Active Galactic Nuclei: Six Dual and Offset AGNs Discovered with Chandra and Hubble Space Telescope Observations

    NASA Astrophysics Data System (ADS)

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

    2015-06-01

    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 Δ 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 Δ 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. 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.

  11. 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.

  12. 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…

  13. 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…

  14. 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…

  15. Guiding Learners to near Native Fluency in English through an Adaptive Programme of Activities Which Includes Phoneme and Prosody Analysis

    ERIC Educational Resources Information Center

    Lawson, Alistair; Attridge, Ann; Lapok, Paul

    2014-01-01

    Many students of English language find pronunciation difficult to master. This work in progress paper discusses an incremental and iterative approach towards developing requirements for software applications to assist learners with the perception and production of English pronunciation in terms of phonemes and prosody. It was found that prompts…

  16. Using Digital Storytelling as a Language Experience Approach Activity: Integrating English Language Learners into a Museum Field Trip

    ERIC Educational Resources Information Center

    Pappamihiel, N. Eleni; Knight, Jennifer Hatch

    2016-01-01

    Second language learners face countless obstacles in the classroom, including communication and comprehension limitations and difficulty building relationships with peers. Many teachers struggle to build an inclusive classroom environment and ensure all students, especially those with linguistic and other learning disadvantages, are learning. This…

  17. 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…

  18. Dive and discover: Expeditions to the seafloor

    NASA Astrophysics Data System (ADS)

    Ayers Lawrence, Lisa

    The Dive and Discover Web site is a virtual treasure chest of deep sea science and classroom resources. The goals of Dive and Discover are to engage students, teachers, and the general public in the excitement of ocean disco very through an interactive educational Web site. You can follow scientists on oceanographic research cruises by reading their daily cruise logs, viewing photos and video clips of the discoveries, and even e-mailing questions to the scientists and crew. WHOI has also included an "Educator's Companion" section with teaching strategies, activities, and assessments, making Dive and Discover an excellent resource for the classroom.

  19. Dive and discover: Expeditions to the seafloor

    NASA Astrophysics Data System (ADS)

    Lawrence, Lisa Ayers

    The Dive and Discover Web site is a virtual treasure chest of deep sea science and classroom resources. The goals of Dive and Discover are to engage students, teachers, and the general public in the excitement of ocean disco very through an interactive educational Web site. You can follow scientists on oceanographic research cruises by reading their daily cruise logs, viewing photos and video clips of the discoveries, and even e-mailing questions to the scientists and crew. WHOI has also included an “Educator's Companion” section with teaching strategies, activities, and assessments, making Dive and Discover an excellent resource for the classroom.

  20. 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…

  1. Learning from Learners.

    ERIC Educational Resources Information Center

    Matos, Joao Filipe

    This paper is a reflection of the preparation of the Psychology of Mathematics Education Panel (PME26) that discuss the issue of "learning from learners." What it implies to be a learner is formulated in order to reflect upon the way teachers and/or researchers learn from learners. The idea of conceptualizing the notion of "learning from learners"…

  2. 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.

  3. 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

  4. Enhancing Writing Pedagogy with Learner Corpus Data

    ERIC Educational Resources Information Center

    Cotos, Elena

    2014-01-01

    Learner corpora have become prominent in language teaching and learning, enhancing data-driven learning (DDL) pedagogy by promoting "learning driven data" in the classroom. This study explores the potential of a local learner corpus by investigating the effects of two types of DDL activities, one relying on a native-speaker corpus (NSC)…

  5. Fortuitously discovered liver lesions

    PubMed Central

    Dietrich, Christoph F; Sharma, Malay; Gibson, Robert N; Schreiber-Dietrich, Dagmar; Jenssen, Christian

    2013-01-01

    The fortuitously discovered liver lesion is a common problem. Consensus might be expected in terms of its work-up, and yet there is none. This stems in part from the fact that there is no preventive campaign involving the early detection of liver tumors other than for patients with known liver cirrhosis and oncological patients. The work-up (detection and differential diagnosis) of liver tumors comprises theoretical considerations, history, physical examination, laboratory tests, standard ultrasound, Doppler ultrasound techniques, contrast-enhanced ultrasound (CEUS), computed tomography and magnetic resonance imaging, as well as image-guided biopsy. CEUS techniques have proved to be the most pertinent method; these techniques became part of the clinical routine about 10 years ago in Europe and Asia and are used for a variety of indications in daily clinical practice. CEUS is in many cases the first and also decisive technical intervention for detecting and characterizing liver tumors. This development is reflected in many CEUS guidelines, e.g., in the European Federation of Societies for Ultrasound in Medicine and Biology (EFSUMB) guidelines 2004, 2008 and 2012 as well as the recently published World Federation for Ultrasound in Medicine and Biology-EFSUMB guidelines 2012. This article sets out considerations for making a structured work-up of incidental liver tumors feasible. PMID:23745019

  6. 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…

  7. Seeing It Their Way: Learners and Language Curricula.

    ERIC Educational Resources Information Center

    Nunan, David

    The starting point for curriculum planning for second language instruction is the learner, and a curriculum can claim to be learner-centered only if key factors about the learner are made the basis for curriculum design at all stages in the planning and development of learning activities and materials and in the sequencing of learning experiences.…

  8. 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

  9. 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…

  10. 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...

  11. Discovering Structure Through Patterns

    ERIC Educational Resources Information Center

    Meconi, L. J.

    1972-01-01

    Patterns in an array of numerals are analyzed; suggestions are given for guided discovery activities leading to a discussion of the properties of identity, closure, commutativity, inverses, and associativity. (DT)

  12. 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…

  13. 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.

  14. 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…

  15. 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…

  16. Learners' Interpretations of Recasts

    ERIC Educational Resources Information Center

    Carpenter, Helen; Jeon, K. Seon; MacGregor, David; Mackey, Alison

    2006-01-01

    A number of interaction researchers have claimed that recasts might be ambiguous to learners; that is, instead of perceiving recasts as containing corrective feedback, learners might see them simply as literal or semantic repetitions without any corrective element (Long, in press; Lyster & Ranta, 1997). This study investigates learners'…

  17. 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…

  18. New volcanoes discovered in southeast Australia

    NASA Astrophysics Data System (ADS)

    Wendel, JoAnna

    2014-07-01

    Scientists have discovered three new active volcanoes in the Newer Volcanics Province (NVP) in southeast Australia. Researchers from Monash University in Melbourne describe in the Australian Journal of Earth Sciences how they used a combination of satellite photographs, detailed topography models from NASA, the distribution of magnetic minerals in the rocks, and site visits to analyze the region.

  19. 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.

  20. Learners' Perceptions toward Online Learning: An Application for a Synchronous E-Class

    ERIC Educational Resources Information Center

    Yuzer, Volkan T.; Aydin, Belgin; Gonen, S. Ipek Kuru

    2009-01-01

    The aim of this study is to discover the effects of an e-class application on the computer and reading anxiety of learners, and the correlation between the two anxieties. The learners' perceptions of this new learning experience are also investigated. Information was obtained by using the Foreign Language Reading Anxiety Scale (FLRAS), the…

  1. 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…

  2. An Analysis of Successful Pronunciation Learners: In Search of Effective Factors in Pronunciation Teaching

    ERIC Educational Resources Information Center

    Tominaga, Yuko

    2009-01-01

    In order to discover some clues to and make suggestions for better teaching English pronunciation to learners in English as a Foreign Language (henceforth abbreviated as EFL) settings, the paper attempts to analyze Successful Foreign Language Learners (SFLL), focusing on their study history. The subjects were 24 junior high school students, who…

  3. 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…

  4. Modeling Learner Variability in CALL

    ERIC Educational Resources Information Center

    Heift, Trude

    2008-01-01

    This article describes challenges and benefits of modeling learner variability in Computer-Assisted Language Learning. We discuss the learner model of "E-Tutor," a learner model that addresses learner variability by focusing on certain aspects and/or features of the learner's interlanguage. Moreover, we introduce the concept of phrase descriptors,…

  5. Improving Learners' Research Process Skills

    NASA Astrophysics Data System (ADS)

    Quan, T. K.; Hunter, L.; Kluger-Bell, B.; Seagroves, S.

    2010-12-01

    The Professional Development Program (PDP) supports participants as they design inquiry activities that help learners improve their research process skills. These skills include the cognitive or reasoning skills that scientists and engineers use while doing research; for example, making a testable hypothesis, coordinating results from multiple experiments, or identifying and evaluating tradeoffs. Past work in the PDP indicated that additional support was needed to help participants design instructional activities that would teach these important skills. A new workshop was therefore developed for the 2009 PDP cycle, entitled "Improving Learners' Process Skills." In this workshop, participants worked in small groups to define specific science and engineering skills found in four past PDP activity designs. Participants distinguished between "simple tasks" and "authentic inquiry" activities that learners could perform as demonstration of the skill. Through this new workshop, participants were able to explicitly discuss ways in which individual process skills are unique or inter-related. In addition, by identifying a "simple task," participants were able to pinpoint areas in which their own designs could be improved to better focus on authentic inquiry tasks. In 2010, the workshop was slightly modified to help participants reconnect the research process skills with the activity content. In addition, the idea of using generic and context-specific scaffolds was also introduced. To make the participants feel like they were contributing to the PDP community, four activity designs actively being worked on in the 2010 cycle were used. Based on participant feedback, this "Improving Learners' Process Skills" workshop should be strongly considered for future returning participants.

  6. 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…

  7. 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…

  8. Extralinguistic Features in Conversational Repairs of Adult Second Language Learners.

    ERIC Educational Resources Information Center

    Schwartz, Joan

    Conversations between adult students of English as a second language were recorded, transcribed, and analyzed in order to establish principles of extralinguistic conversational repair technique among second language learners. A variety of gestural and kinesic features were discovered; these are described in detail and their use is contextualized…

  9. 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…

  10. 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

  11. Conceptualizing Learner Support Space.

    ERIC Educational Resources Information Center

    Cates, Ward Mitchell; Bruce, Ronald R.

    2000-01-01

    Discussion of computer-based online help systems for instructional software focuses on three types of learner support: for optimizing use of a computer program; for learning content; and for monitoring and enhancing learning. Proposes a multi-dimensional model of learner-support space defined by the intrusiveness of the delivery methods and…

  12. 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…

  13. The Learner's Permit.

    ERIC Educational Resources Information Center

    Mayhew, Daniel R.

    2003-01-01

    Considers the role and value of an extended learner's period in a graduated driver-licensing system through a review of the literature. Concludes that further research is needed on the safety benefits and optional features of the learner period. (Contains 1 figure, 3 tables, and 41 references.) (AUTHOR/WFA)

  14. Focus on the Learner.

    ERIC Educational Resources Information Center

    Richards, Jack C.

    1988-01-01

    Ways in which curriculum development and methodology in teaching English as a Second Language can take account of learners are discussed. In addition, ways that teachers and researchers can collaborate in the process of developing a learner-center curriculum are examined. (28 references) (LB)

  15. Understanding Oral Learners

    ERIC Educational Resources Information Center

    Moon, W. Jay

    2012-01-01

    A five-year research project of seminary students from various cultural backgrounds revealed that the slight majority of contemporary seminary students studied are oral learners. Oral learners learn best and have their lives most transformed when professors utilize oral teaching and assessment methods. After explaining several preferences of oral…

  16. 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…

  17. Improving the EFL Learners' Speaking Ability through Interactive Storytelling

    ERIC Educational Resources Information Center

    Marzuki; Prayogo, Johannes Ananto; Wahyudi, Arwijati

    2016-01-01

    This present research was aimed to improve the EFL learners' speaking ability and their classroom activities through the implementation of Interactive Storytelling Strategy. Therefore, this study was directed to explore the beneficial of Interactive Storytelling that closely related to the EFL learners' everyday activities at their home and…

  18. DISCOVER-AQ Featured Articles

    Atmospheric Science Data Center

    2017-01-31

    ...     Not Your Average Video Traffic Report : Earth Matters Blogs  - DISCOVER-AQ planes have been flying over roadways, ... News Roundup: Arctic Ice, Spacesuit Satellites and More : Earth Matters Blogs  - The July 5 flight was part of a summer-long air ...

  19. Large solar system planetoid discovered

    NASA Astrophysics Data System (ADS)

    Showstack, Randy

    A newly discovered planetoid, currently dubbed 2004 UN, could be confirmed as the largest such known body in the Kuiper Belt, scientists announced on 19 February.The planetoid, located about 4.4 billion miles from Earth, is estimated at about 1,400 kilometers in diameter, according to Michael Brown, associate professor of planetary astronomy at the California Institute of Technology.

  20. 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.…

  1. 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…

  2. The use of docking-based comparative intermolecular contacts analysis to identify optimal docking conditions within glucokinase and to discover of new GK activators

    NASA Astrophysics Data System (ADS)

    Taha, Mutasem O.; Habash, Maha; Khanfar, Mohammad A.

    2014-05-01

    Glucokinase (GK) is involved in normal glucose homeostasis and therefore it is a valid target for drug design and discovery efforts. GK activators (GKAs) have excellent potential as treatments of hyperglycemia and diabetes. The combined recent interest in GKAs, together with docking limitations and shortages of docking validation methods prompted us to use our new 3D-QSAR analysis, namely, docking-based comparative intermolecular contacts analysis (dbCICA), to validate docking configurations performed on a group of GKAs within GK binding site. dbCICA assesses the consistency of docking by assessing the correlation between ligands' affinities and their contacts with binding site spots. Optimal dbCICA models were validated by receiver operating characteristic curve analysis and comparative molecular field analysis. dbCICA models were also converted into valid pharmacophores that were used as search queries to mine 3D structural databases for new GKAs. The search yielded several potent bioactivators that experimentally increased GK bioactivity up to 7.5-folds at 10 μM.

  3. 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.

  4. A Study of the Relationship between Learner-Control Patterns and Course Completion in Computer-Assisted Instruction.

    ERIC Educational Resources Information Center

    Sasscer, Monica Flynn; Moore, David M.

    1984-01-01

    Describes a study designed to discover how community college students enrolled in algebra and English grammar courses used the available learner-control features of the TICCIT (Time-Shared Interactive Computer-Controlled Information Television) computer-assisted instruction system. Results indicate learner-control options were utilized but no…

  5. 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…

  6. Beyond Beginning Learners.

    ERIC Educational Resources Information Center

    Jongsma, Kathy

    2003-01-01

    Discusses materials for middle grade and high school learners. Explains useful resources for teaching struggling writers. Details a publishing tool, a reading comprehension assessment, and a Scholastic Assessment Tests (SAT) preparation text. (PM)

  7. Independence Pending: Teacher Behaviors Preceding Learner Problem Solving

    ERIC Educational Resources Information Center

    Roesler, Rebecca A.

    2017-01-01

    The purposes of the present study were to identify the teacher behaviors that preceded learners' active participation in solving musical and technical problems and describe learners' roles in the problem-solving process. I applied an original model of problem solving to describe the behaviors of teachers and students in 161 rehearsal frames…

  8. Supporting Learners' Appropriation of a Web-Based Learning Curriculum

    ERIC Educational Resources Information Center

    Rasseneur-Coffinet, Dorothée; Smyrniou, Georgia; Tchounikine, Pierre

    2007-01-01

    This article presents an approach and tools that can help learners appropriate a Web-based learning curriculum and become active participants in their learning. The approach is based on a detailed modeling of the curriculum and intends to equip the learners with different computer-based tools facilitating a multiple point of view perception of the…

  9. 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…

  10. Annotation-Based Learner's Personality Modeling in Distance Learning Context

    ERIC Educational Resources Information Center

    Omheni, Nizar; Kalboussi, Anis; Mazhoud, Omar; Kacem, Ahmed Hadj

    2016-01-01

    Researchers in distance education are interested in observing and modeling learners' personality profiles, and adapting their learning experiences accordingly. When learners read and interact with their reading materials, they do unselfconscious activities like annotation which may be key feature of their personalities. Annotation activity…

  11. Maximising Asian ESL Learners' Communicative Oral English via Drama

    ERIC Educational Resources Information Center

    Gill, Chamkaur

    2016-01-01

    This paper proposes that activities based on a variety of drama-based techniques could be valuable in giving Asian ESL learners opportunities to use communicative spoken English confidently and without restraint during their time in English-language-speaking countries. These learners often get anxious when in situations where they are required to…

  12. 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…

  13. From chemical consistency to effective consistency in precise quality discrimination of Sophora flower-bud and Sophora flower: Discovering efficacy-associated markers by fingerprint-activity relationship modeling.

    PubMed

    Wang, Fei; Xiong, Zi-Yue; Li, Ping; Yang, Hua; Gao, Wen; Li, Hui-Jun

    2017-01-05

    Chromatographic fingerprint has been extensively used as a comprehensive approach for quality evaluation of herbal medicines (HMs). However, similar chemical profiles do not always mean similar efficacies. The present work, taking Sophora flower-bud and Sophora flower as a typical case, attempts to develop a rational strategy based on fingerprint-activity relationship modeling to realize quality evaluation from chemical consistency to effective consistency. A total of 57 batches of Sophora samples were collected and their antioxidant and hyaluronidase inhibitory activities were measured. Chemical fingerprints were established by high performance liquid chromatography (HPLC) coupled with photodiode array (PDA) detector and quadrupole time-of-flight mass spectrometry (Q-TOF MS), and similarity analyses were calculated based on eight common characteristic peaks. Subsequently, three principal bioactive markers were discovered by correlating biological effects with chemical fingerprints via partial least squares regression (PLSR) and back propagation-artificial neural network modeling (BP-ANN). The selected markers were quantified by the 'single standard to determine multi-components' method, and then the quantitative data as well as their bioactive properties were subjected to principal component analysis to generate two clear-cut groups. This study not only demonstrates the necessity of effective consistency besides chemical consistency in the quality evaluation of HMs, but also provides an applicable strategy to screen out efficacy-associated markers by fingerprint-activity relationship modeling.

  14. Discover an Asteroid Using SDSS

    NASA Astrophysics Data System (ADS)

    Ramseyer, Elizabeth A.

    2006-12-01

    Every Fall, the Apache Point Observatory repeatedly images the skies near declination 0 degrees in a quest to see first light from distant supernovae. The Sloan Digital Sky Survey (SDSS) uses the data from these images to map the Universe. These data are made available on the internet for use by the public. While analyzing these images, we discovered the presence of a transient light source that subsequent analysis showed our ?mystery object? to be an asteroid. We present here the details of the analysis that allowed us to determine the identity of our ?mystery object.? Learn how you can access the SDSS database and make your own discovery!

  15. Digital Discover of Ephemeral Ponds

    DTIC Science & Technology

    2012-08-01

    ER D C/ CE RL T R - 12 -2 1 Center Directed Research Program Digital Discover of Ephemeral Ponds En gi ne er R es ea rc h an d D ev el...r.mapcalc formula : r.terraflow lidar_elev filled=elev_filled \\ accum=elev_accum memory=2000 \\ dir=elev_dir swater=elev_sink tci =elev_tci...J. D., M. Shapiro, W. D. Goran, and D. P. Gerdes. 1992. Geographic Resources Analysis Support System (GRASS) Version 4.0 User’s Reference Manual . N

  16. 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…

  17. Design Issues Related to the Evaluation of Learner--Computer Interaction in a Web-Based Environment: Activities v. Tasks

    ERIC Educational Resources Information Center

    Hemard, Dominique

    2006-01-01

    If web-based technology is increasingly becoming the central plank of contemporary teaching and learning processes, there is still too little evidence to suggest that it is delivering purposeful learning activities beyond its widely perceived potential as a learning resource providing content and learning objects. This is due in part to the…

  18. Language-Building Activities and Interaction Variations with Mixed-Ability ESL University Learners in a Content-Based Course

    ERIC Educational Resources Information Center

    Serna Dimas, Héctor Manuel; Ruíz Castellanos, Erika

    2014-01-01

    The preparation of both language-building activities and a variety of teacher/student interaction patterns increase both oral language participation and content learning in a course of manual therapy with mixed-language ability students. In this article, the researchers describe their collaboration in a content-based course in English with English…

  19. Community Resources. Teacher Guidebook and Student Activity Book. Adult Basic Education Project REAL: Relevant Education for Adult Learners.

    ERIC Educational Resources Information Center

    Edgar, S. Keith

    This packet contains both a teacher's guide and a student activity book designed to help adult students locate and use community resources. Both booklets cover the following topics: the public library, Social Security, postal services, use of the telephone and the telephone directory, the newspaper, the Cooperative Extension Service, reference…

  20. 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.…

  1. Exploring South African Grade 11 Learners' Perceptions of Classroom Inquiry: Validation of a Research Instrument

    ERIC Educational Resources Information Center

    Dudu, Washington T.; Vhurumuku, Elaosi

    2012-01-01

    This paper discusses the adoption and validation of a research instrument, on determining learners' levels of perception of classroom inquiry based on data collected from South African Grade 11 learners. The Learners' Perception of Classroom Inquiry (LPCI) instrument consists only of Likert-type items which rank activities according to how often…

  2. 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…

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

    ERIC Educational Resources Information Center

    Gallagher, Silvia Elena; Savage, Timothy

    2016-01-01

    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…

  4. 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…

  5. Discovering Network Structure Beyond Communities

    NASA Astrophysics Data System (ADS)

    Nishikawa, Takashi; Motter, Adilson E.

    2011-11-01

    To understand the formation, evolution, and function of complex systems, it is crucial to understand the internal organization of their interaction networks. Partly due to the impossibility of visualizing large complex networks, resolving network structure remains a challenging problem. Here we overcome this difficulty by combining the visual pattern recognition ability of humans with the high processing speed of computers to develop an exploratory method for discovering groups of nodes characterized by common network properties, including but not limited to communities of densely connected nodes. Without any prior information about the nature of the groups, the method simultaneously identifies the number of groups, the group assignment, and the properties that define these groups. The results of applying our method to real networks suggest the possibility that most group structures lurk undiscovered in the fast-growing inventory of social, biological, and technological networks of scientific interest.

  6. 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…

  7. Three newly discovered sub-Jupiter-mass planets: WASP-69b and WASP-84b transit active K dwarfs and WASP-70Ab transits the evolved primary of a G4+K3 binary

    NASA Astrophysics Data System (ADS)

    Anderson, D. R.; Collier Cameron, A.; Delrez, L.; Doyle, A. P.; Faedi, F.; Fumel, A.; Gillon, M.; Gómez Maqueo Chew, Y.; Hellier, C.; Jehin, E.; Lendl, M.; Maxted, P. F. L.; Pepe, F.; Pollacco, D.; Queloz, D.; Ségransan, D.; Skillen, I.; Smalley, B.; Smith, A. M. S.; Southworth, J.; Triaud, A. H. M. J.; Turner, O. D.; Udry, S.; West, R. G.

    2014-12-01

    We report the discovery of the transiting exoplanets WASP-69b, WASP-70Ab and WASP-84b, each of which orbits a bright star (V ˜ 10). WASP-69b is a bloated Saturn-mass planet (0.26 MJup, 1.06 RJup) in a 3.868-d period around an active, ˜1-Gyr, mid-K dwarf. ROSAT detected X-rays 60±27 arcsec from WASP-69. If the star is the source then the planet could be undergoing mass-loss at a rate of ˜1012 g s-1. This is one to two orders of magnitude higher than the evaporation rate estimated for HD 209458b and HD 189733b, both of which have exhibited anomalously large Lyman α absorption during transit. WASP-70Ab is a sub-Jupiter-mass planet (0.59 MJup, 1.16 RJup) in a 3.713-d orbit around the primary of a spatially resolved, 9-10-Gyr, G4+K3 binary, with a separation of 3.3 arcsec (≥800 au). WASP-84b is a sub-Jupiter-mass planet (0.69 MJup, 0.94 RJup) in an 8.523-d orbit around an active, ˜1-Gyr, early-K dwarf. Of the transiting planets discovered from the ground to date, WASP-84b has the third-longest period. For the active stars WASP-69 and WASP-84, we pre-whitened the radial velocities using a low-order harmonic series. We found that this reduced the residual scatter more than did the oft-used method of pre-whitening with a fit between residual radial velocity and bisector span. The system parameters were essentially unaffected by pre-whitening.

  8. 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.

  9. 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.

  10. 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…

  11. 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)…

  12. 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.…

  13. Hypermedia Design as Learner Scaffolding

    ERIC Educational Resources Information Center

    Shapiro, Amy M.

    2008-01-01

    A number of available resources offer guidance about hypermedia design strategies, many of which rely on principles of user-centered design. Many recent efforts, however, have focused more on developing "learner-centered" hypermedia. Learner-centered hypermedia is designed to help learners achieve their educational goals, rather than offer mere…

  14. 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…

  15. 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".

  16. 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…

  17. 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…

  18. Supporting Language Learners

    ERIC Educational Resources Information Center

    Cady, Jo Ann; Hodges, Thomas E.; Brown, Clara Lee

    2010-01-01

    English Language Learners (ELLs) have an increasing presence in the nations' classrooms. From 1991 to 2004 the number of ELLs nearly doubled in grades K-12. Furthermore, new forms of accountability have school personnel concerned with the progress--or lack of progress--of the ELLs. "Principles and Standards" also reflects this concern: The Equity…

  19. 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…

  20. 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…

  1. Literacy and the Learner.

    ERIC Educational Resources Information Center

    World Education, Inc. Reports, 1987

    1987-01-01

    This journal issue focuses on the learner, looks at why literacy has become a major concern and examines the changes brought about by the mastery of new skills. "Literacy/Illiteracy in an International Perspective" (Carman St. John Hunter) frames the discussion by stressing that literacy and illiteracy are moving targets, not fixed by…

  2. 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…

  3. 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…

  4. 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…

  5. 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…

  6. 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…

  7. Helping Gifted Learners Soar

    ERIC Educational Resources Information Center

    Rakow, Susan

    2012-01-01

    Whenever educators talk about raising achievement, grade-level standards are most frequently the end goal for student learning. But what about students who have already met some, if not all, of those standards and who master material quickly and in-depth? Advanced and gifted learners often languish in our schools because teachers don't have the…

  8. 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,…

  9. 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…

  10. 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

  11. 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

  12. 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

  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. [Discover the sport en institution].

    PubMed

    Jouet, Emmanuelle; Amel, Nasfi; Favriel, Sébastien; Martin, Danièle; Greacen, Tim

    2013-01-01

    In order to promote physical activity to users of psychiatric services, the Maison Blanche public health facility organised a sports discovery day with a specialised partner, the French Federation of Adapted Sport (FFSA). Feedback on the day revealed a high level of satisfaction. Such initiatives favour physical activity among users and thereby help to fight the negative somatic effects of mental illness and antipsychotic drugs.

  15. 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.

  16. Discovering the first tyrosine kinase.

    PubMed

    Hunter, Tony

    2015-06-30

    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.

  17. 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

  18. Discovering modulators of gene expression

    PubMed Central

    Babur, Özgün; Demir, Emek; Gönen, Mithat; Sander, Chris; Dogrusoz, Ugur

    2010-01-01

    Proteins that modulate the activity of transcription factors, often called modulators, play a critical role in creating tissue- and context-specific gene expression responses to the signals cells receive. GEM (Gene Expression Modulation) is a probabilistic framework that predicts modulators, their affected targets and mode of action by combining gene expression profiles, protein–protein interactions and transcription factor–target relationships. Using GEM, we correctly predicted a significant number of androgen receptor modulators and observed that most modulators can both act as co-activators and co-repressors for different target genes. PMID:20466809

  19. Discovering Rumpelstiltskin: Building Language Skills.

    ERIC Educational Resources Information Center

    Minarich, Ann; And Others

    1994-01-01

    Principles of whole-language instruction are being implemented with upper elementary students at the Nebraska School for the Deaf. Students conduct cross-genre studies involving book, stage play, and movie versions of familiar tales. The approach incorporates language arts, social studies, science, art, and speech activities. (DB)

  20. 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

  1. Discovering the Botnet Detection Techniques

    NASA Astrophysics Data System (ADS)

    Rahim, Aneel; Bin Muhaya, Fahad T.

    Botnet is a network of compromised computers. It just fellow the master slave concept. Bots are comprised computers and do the tasks what ever their master orders them. Internet Relay Chat (IRC) is used for the communication between the master and bots. Information is also encrypted to avoid the effect of third party. In this paper we discuss the Botnets detection techniques and comparative analysis of these techniques on the basis of DNS query, History data and group activity.

  2. 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

  3. Learner Preferences and Achievement Under Differing Amounts of Learner Practice.

    ERIC Educational Resources Information Center

    Schnackenberg, Heidi L.; Sullivan, Howard J.; Leader, Lars F.; Jones, Elizabeth E. K.

    1998-01-01

    Examines the effects of program mode (i.e., a lean program version containing a basic amount of learner practice versus a full mode containing expanded practice) and learner preference (matched or unmatched) for amount of practice on the achievement, time-in-program, and attitudes of university undergraduate students. Students preferred the lean…

  4. 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…

  5. 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…

  6. 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…

  7. 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,…

  8. Exploring Podcasting in English as a Foreign Language Learners' Writing Performance

    ERIC Educational Resources Information Center

    Bamanger, Ebrahim Mohammed; Alhassan, Riyadh Abdulrahman

    2015-01-01

    The purpose of the present study was to determine whether giving English as a foreign language learners podcast lectures in addition to the traditional lectures help them to enhance their English language writing, and to explore and discover useful information regarding the adoption of podcasting as a learning or training tool in order to better…

  9. 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 …

  10. Lessons from the Other Side of the Teacher's Desk: Discovering Insights to Help Language Learners

    ERIC Educational Resources Information Center

    Westbrook, Frances

    2011-01-01

    Most language teachers become teachers because they are fascinated by language. They like the way languages work, they are intrigued by differences between their native tongues and other languages, and they enjoy the process of helping their students learn. Most language teachers have had positive experiences as language students themselves…

  11. Demonized Learners in Sociocultural Theory

    ERIC Educational Resources Information Center

    Chen, Joanna

    2016-01-01

    Within the frameworks of Sociocultural theory, particularly Vygotskian sociocultural theory and ZPD, Lave and Wenger's CoP, and contemporary sociocultural theory, this paper seeks to examine the unfavourable scholarly portrayal of learners and their identities based on learners' behaviours, attitudes, and beliefs about the social element of…

  12. 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…

  13. 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…

  14. 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…

  15. The Adult Learner: Four Aspects.

    ERIC Educational Resources Information Center

    Lucas, John A., Ed.

    1986-01-01

    Topics concerning the adult learner that are relevant to institutional researchers are addressed in four articles: marketing, predicting success for adult students, enrollment projection, and follow-up studies of adult learners. In "Institutional Research in Support of Marketing the Adult Student," Lydia Jurand notes the importance of…

  16. 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…

  17. 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…

  18. 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…

  19. 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…

  20. Learner Autonomy and New Technologies.

    ERIC Educational Resources Information Center

    Raya, Manuel Jimenez; Fernandez, Jose Maria Perez

    2002-01-01

    Presents paths for theoretical research and practical procedures that may help teachers make new technology pedagogically relevant. Discusses the need to develop learner autonomy to help students process information in meaningful ways and become independent learners by developing effective learning strategies, transfer skills, and a greater sense…

  1. 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…

  2. 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…

  3. Learner Control in Hypermedia Environments

    ERIC Educational Resources Information Center

    Scheiter, Katharina; Gerjets, Peter

    2007-01-01

    Contrary to system-controlled multimedia learning environments, hypermedia systems are characterized by a high level of interactivity. This interactivity is referred to as learner control in the respective literature. For several reasons this learner control is seen as a major advantage of hypermedia for learning and instruction. For instance,…

  4. 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…

  5. 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

  6. 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).

  7. 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...

  8. Scientists Discover More Clues to Stuttering

    MedlinePlus

    ... fullstory_162368.html Scientists Discover More Clues to Stuttering MRI shows involvement of brain areas controlling speech, ... speech, attention and emotion are all linked to stuttering. Stuttering is characterized by involuntarily repeating certain sounds, ...

  9. 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...

  10. 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....

  11. 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…

  12. 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…

  13. Model Learner Outcomes for Service Occupations.

    ERIC Educational Resources Information Center

    Grote, Audrey M.

    This guide to model learner outcomes for service occupations contains four chapters: (1) education values, learner values, philosophy, mission, and goals; (2) introduction, goals, and eight program-level learner outcomes; (3) general learner outcomes and outcomes for housing occupations, child care occupations, cosmetology and personal services,…

  14. 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.…

  15. 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.

  16. 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…

  17. 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…

  18. "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…

  19. 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'…

  20. The Relationship between Iranian EFL Learners' Self-Regulatory Vocabulary Strategy Use and Their Vocabulary Size

    ERIC Educational Resources Information Center

    Amirian, Seyed Mohammad Reza; Mallahi, Omid; Zaghi, Damoon

    2015-01-01

    Self-regulation is referred to as learners' self-generated ideas and actions which are systematically directed towards achieving educational goals and require learners' active participation in the learning process (Zimmerman & Bandura, 1994). The present study investigated the relationship between Iranian EFL students' self-regulation capacity…

  1. 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…

  2. 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…

  3. 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 their…

  4. 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…

  5. Guiding Learners into Reengagement through the SCALE Environment: An Empirical Study

    ERIC Educational Resources Information Center

    Verginis, Ilias; Gouli, Evangelia; Gogoulou, Agoritsa; Grigoriadou, Maria

    2011-01-01

    The paper presents the facilities offered by the open learner model maintained in the web-based, adaptive, activity-oriented learning environment SCALE (Supporting Collaboration and Adaptation in a Learning Environment), in order to guide online students who become disengaged and support their reengagement. The open learner model (OLM_SCALE)…

  6. 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…

  7. Learner-Centered Psychological Principles: A Framework for School Redesign and Reform.

    ERIC Educational Resources Information Center

    American Psychological Association, Washington, D.C.

    Educators, concerned with disturbing trends in school failure, are arguing for more learner-centered models of schooling. Such a reform effort requires set principles that emphasize the active and reflective nature of learning and learners; 14 such principles are reported here. The immediate goal of this report is to provide a framework that can…

  8. 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)…

  9. 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…

  10. Evoking the Power of Learners

    PubMed Central

    Hotelling, Barbara A.

    2011-01-01

    Our mandate, as Lamaze International childbirth educators, is to assist women in making healthy pregnancy, birth, and parenting choices. Being mindful of health promotion theory and using learning tasks and dialogue education to provide information creates a collaborative Lamaze class where the teacher is the facilitator and the learners are accountable for their learning. This column offers Lamaze educators a deeper understanding of adult learners and our roles in their birth education. PMID:22942625

  11. 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.

  12. 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…

  13. 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

  14. 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.

  15. 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)

  16. 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…

  17. Boron Discovered in Ancient Habitable Mars Groundwater

    SciTech Connect

    Gasda, Patrick

    2016-12-13

    Boron was recently discovered in calcium-sulfate veins on Mars using the ChemCam instrument on NASA’s Curiosity Mars Rover. This is the first Mars mission to detect boron on the Red Planet. Los Alamos Post-Doctoral Student Patrick Gasda explains how this discovery helps us better understand the timescale of habitability on Mars.

  18. 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).

  19. 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.

  20. 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…

  1. 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…

  2. 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

  3. 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...

  4. Discover Your Band or Orchestra's Roots.

    ERIC Educational Resources Information Center

    Fonder, Mark

    1990-01-01

    States that discovering the origins of one's school music group can promote interest in the school's music programs. Discusses books that provide historical information on school music programs; provides ideas for formulating teaching objectives; and tells how to locate sources and organize data. (DB)

  5. 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.

  6. Inductive/Deductive Learning by Considering the Role of Gender--A Case Study of Iranian French-Learners

    ERIC Educational Resources Information Center

    Rahmatian, Rouhollah; Zarekar, Fatemeh

    2016-01-01

    This article defines the objective of discovering the first preferred styles of Iranian learners of French as a Foreign Language (FFL) as regards inductive or deductive learning; and secondly, the difference between gender-based learning tendencies. Considering these points as target variables, the questionnaire developed by Felder and Silverman…

  7. "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…

  8. Discovering phase transitions with unsupervised learning

    NASA Astrophysics Data System (ADS)

    Wang, Lei

    2016-11-01

    Unsupervised learning is a discipline of machine learning which aims at discovering patterns in large data sets or classifying the data into several categories without being trained explicitly. We show that unsupervised learning techniques can be readily used to identify phases and phases transitions of many-body systems. Starting with raw spin configurations of a prototypical Ising model, we use principal component analysis to extract relevant low-dimensional representations of the original data and use clustering analysis to identify distinct phases in the feature space. This approach successfully finds physical concepts such as the order parameter and structure factor to be indicators of a phase transition. We discuss the future prospects of discovering more complex phases and phase transitions using unsupervised learning techniques.

  9. 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…

  10. 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

  11. Plant Biofilm Inhibitors to Discover Biofilm Genes

    DTIC Science & Technology

    2011-04-08

    REPORT Final Report for Plant Biofilm Inhibitors to Discover Biofilm Genes 14. ABSTRACT 16. SECURITY CLASSIFICATION OF: To control biofilms , we have...synthesized the natural biofilm inhibitor (5Z)-4-bromo-5-(bromomethylene) -3-butyl-2(5H)-furanone from the red alga Delisea pulchra and determined that...Research Office P.O. Box 12211 Research Triangle Park, NC 27709-2211 15. SUBJECT TERMS biofilms , biofilm inhibitors Thomas K. Wood Texas Engineering

  12. 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).

  13. 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

  14. 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

  15. Focus on Form, Learner Uptake and Subsequent Lexical Gains in Learners' Oral Production

    ERIC Educational Resources Information Center

    Alcon-Soler, Eva

    2009-01-01

    This descriptive study reports findings on the relationship between focus on form, learner uptake and subsequent lexical gains in learners' oral production. The data for the study consisted in 17 45-minute audio-recorded teacher-led conversations, 204 learners' diaries (17 sessions x 12 learners) reporting what they had learned after each…

  16. 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…

  17. Affective Dimensions of the Japanese Foreign Language Learner: Implications for Psychological Learner Development in Japan

    ERIC Educational Resources Information Center

    Fukuchi, Naoko Tani; Sakamoto, Robin

    2005-01-01

    As learner-centred approaches are gaining popularity in many language classrooms, the affective dimensions of learners and the interaction effects of learners and teachers have become an important theme for research and assessment. This paper explores how Japanese learners of English as a foreign language evolve in two geographically distinct…

  18. Explicit and Implicit Feedback, Modified Output, and SLA: Does Explicit and Implicit Feedback Promote Learning and Learner-Learner Interactions?

    ERIC Educational Resources Information Center

    Adams, Rebecca; Nuevo, Ana Maria; Egi, Takako

    2011-01-01

    Research on interactional feedback has typically focused on feedback learners receive from native speakers (i.e., NS-learner contexts). However, for many second language (L2) learners, the majority of their opportunities to engage in interaction occur with other learners (i.e., learner-learner contexts). The literature has suggested that feedback…

  19. 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…

  20. Administrative Roles in Helping Faculty Adapt to Adult Learners.

    ERIC Educational Resources Information Center

    Miller, Keith A.

    Since the number of adult students engaging in higher education activities is growing rapidly and is expected to continue to climb, this paper is intended to help administrators develop a perspective from which to view adult learners on college campuses and craft programs to help faculty work more effectively with adult students. The first section…

  1. 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…

  2. The Campus Leadership as a Community of Learners.

    ERIC Educational Resources Information Center

    Albers, Randy

    Students are increasingly expected to be able to think critically, solve complex problems, and communicate clearly. Educators are expected to facilitate that learning in a variety of situations for an increasingly individualized student population. Therefore, educators who attempt to change their practices must become active learners. A school…

  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 Study of Pharmacists' Behavior as Lifelong Learners.

    ERIC Educational Resources Information Center

    Hanson, Alan L.; DeMuth, James E.

    1992-01-01

    A national survey of 355 licensed pharmacists investigated their perceptions of themselves as lifelong learners, participation in various professional and leisure activities, attitudes predicting lifelong learning behavior, and respondent characteristics. The two analytical models used arrived at different demographic and other variables…

  5. Are Online Learners Frustrated with Collaborative Learning Experiences?

    ERIC Educational Resources Information Center

    Capdeferro, Neus; Romero, Margarida

    2012-01-01

    Online education increasingly puts emphasis on collaborative learning methods. Despite the pedagogical advantages of collaborative learning, online learners can perceive collaborative learning activities as frustrating experiences. The purpose of this study was to characterize the feelings of frustration as a negative emotion among online learners…

  6. Learner Experiences in Web-Based Language Learning

    ERIC Educational Resources Information Center

    Son, Jeong-Bae

    2007-01-01

    The World Wide Web offers a global database of authentic materials that can enhance language learning and teaching. This study examines the use of the web for language learning through a study of English as a second language (ESL) learners' experiences in web-based language learning (WBLL) activities in an English language intensive course for…

  7. 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,…

  8. Adults as Learners. Increasing Participation and Facilitating Learning.

    ERIC Educational Resources Information Center

    Cross, K. Patricia

    The literature on adult learners is reviewed, and two models of adult learning are developed. Demographic, social, and technological trends that stimulate the increasing demand for learning opportunities are examined, and the views of those who see dangers in new pressures on adults to participate in organized learning activities are considered.…

  9. 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…

  10. Using Young Adult Literature with Adolescent Learners of English.

    ERIC Educational Resources Information Center

    Watts, Elizabeth L.

    1999-01-01

    Discusses (1) a rationale for using young adult literature with adolescent English-as-a-Second-Language learners; (2) an approach to teaching the novel "Make Lemonade" by Virginia Euwer Wolff; (3) activities in which students engaged and samples of their work; and (4) implications for teachers who explore young adult literature with…

  11. Learner Control in Computer Assisted Learning.

    ERIC Educational Resources Information Center

    Holmes, N.; And Others

    1985-01-01

    An investigation of how secondary students coped when taught binary arithmetic through a computer assisted instruction program used four treatment groups: learner control, learner control with advice; random program control, and adaptive program control. The random group performed less well, but no differences were found between learner and…

  12. Technology Applications for the Exceptional Learner.

    ERIC Educational Resources Information Center

    Burke, Janet

    This paper is a series of lesson plans designed to assist teachers with the instruction of the exceptional learner. The focus is on identifying what the exceptional learner needs, and provides specific lesson plans that met those needs. Exceptional learners experience difficulty with spelling, organization, and metacognition. Detailed directions…

  13. Becoming a Strategic Language Learner in CALL

    ERIC Educational Resources Information Center

    Cohen, Andrew D.

    2007-01-01

    This article outlines what it means to be a strategic language learner in the context of Computer-Assisted Language Learning (CALL). It looks at the possible roles for language learner strategies at their crucial intersection with language learning technology. We will first consider what language learner strategies have been represented in…

  14. 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…

  15. 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…

  16. 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;…

  17. 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…

  18. Discovering the Universe, 6th edition

    NASA Astrophysics Data System (ADS)

    Comins, Neil F.; Kaufmann, William J.

    Discovering the Universe is the best-selling brief text for descriptive one-term astronomy courses (especially those with no mathematics prerequisites). Carried along by the book's vibrant main theme--the process of scientific discovery--readers will encounter spectacular sights, landmark experiments, and recent discoveries, while learning to avoid the pitfalls created by common misconceptions about astronomy. Now enhanced with a powerful technology and image projection package, this is the most exciting and effective edition yet. The accompanying CD-ROM features a special student version of the award-winning virtual planetarium software, Starry Night? Backyard.

  19. 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

  20. 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.

  1. Language Learners' Writing Task Representation and Its Effect on Written Performance in an EFL Context.

    PubMed

    Zarei, Gholam Reza; Pourghasemian, Hossein; Jalali, Hassan

    2016-10-15

    The present study attempts to give an account of how students represent writing task in an EAP course. Further, the study is intended to discover if learners' mental representation of writing would contribute to their written performance. During a 16-week term, students were instructed to practice writing as a problem solving activity. At almost the end of the term, they were prompted to write on what they thought writing task was like and also an essay on an argumentative topic. The results revealed that students could conceptualize the instructed recursive model of writing as a process-based, multi-dimensional and integrated activity inducing self-direction and organization while holding in low regard the product view of writing. The findings also demonstrated that task representation was related to the students' writing performance, with process oriented students significantly outperforming the product-oriented ones. Also, it was found that task representation components (ideational, linguistic, textual, interpersonal) had a significant relationship with the written performance ([Formula: see text]; Sig.: 0.006). The study can have both theoretical and practical implications with regard to the factors involving the students' writing internal processes and their effects on written performance.

  2. 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.

  3. 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?

  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. Motivational Profiles of Adult Learners

    ERIC Educational Resources Information Center

    Rothes, Ana; Lemos, Marina S.; Gonçalves, Teresa

    2017-01-01

    This study investigated profiles of autonomous and controlled motivation and their effects in a sample of 188 adult learners from two Portuguese urban areas. Using a person-centered approach, results of cluster analysis and multivariate analysis of covariance revealed four motivational groups with different effects in self-efficacy, engagement,…

  6. 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…

  7. 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…

  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. 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…

  10. 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…

  11. English Language Learner Engineering Collaborative

    ERIC Educational Resources Information Center

    Pendergraft, Katy; Daugherty, Michael K.; Rossetti, Charles

    2009-01-01

    In an effort to develop an engineering design project that would deliver the necessary content and reach out to the English Language Learner (ELL) community, faculty in the Engineering Academy at Springdale High School in Springdale, Arkansas instituted the ELL Engineering Collaborative. The ELL Engineering Collaborative has four primary goals…

  12. 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…

  13. 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…

  14. 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.

  15. 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…

  16. 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.

  17. 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…

  18. 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…

  19. 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…

  20. Faculty Development: Assessing Learner Achievement.

    ERIC Educational Resources Information Center

    Frey, Barbara A.; Overfield, Karen

    This study addressed the challenges of developing a faculty professional development workshop on assessment, measurement, and evaluation of achievement in adult learners. The setting for the workshop was a system of postsecondary career colleges throughout the United States. The curriculum development model of D. Kirkpatrick (1994) was used as a…

  1. THE SIGNIFICANCE OF LEARNER'S ERRORS.

    ERIC Educational Resources Information Center

    CORDER, S.P.

    ERRORS (NOT MISTAKES) MADE IN BOTH SECOND LANGUAGE LEARNING AND CHILD LANGUAGE ACQUISITION PROVIDE EVIDENCE THAT A LEARNER USES A DEFINITE SYSTEM OF LANGUAGE AT EVERY POINT IN HIS DEVELOPMENT. THIS SYSTEM, OR "BUILT-IN SYLLABUS," MAY YIELD A MORE EFFICIENT SEQUENCE THAN THE INSTRUCTOR-GENERATED SEQUENCE BECAUSE IT IS MORE MEANINGFUL TO THE…

  2. Learners in Action, Summer 2005

    ERIC Educational Resources Information Center

    Movement for Canadian Literacy, 2005

    2005-01-01

    This Summer 2005 issue of "Learners in Action" contains the following articles: (1) Bridging Barriers to Learning (Glenn Kissman); (2) Education Really Is a Family Affair; (3) Sabrina's Story; (4) SARAW Helps Students Find Their Voice; (5) Literacy Changes Lives; and (6) Seeing STARs in Alberta.

  3. 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…

  4. 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,…

  5. 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…

  6. Adult Learners in the Academy

    ERIC Educational Resources Information Center

    Bash, Lee

    1999-01-01

    Adult learners comprise almost 50 percent of all students enrolled in higher Education. Some argue they are pioneering change in today's higher educational landscape. This book is designed to assist faculty members and administrators who want to understand how the impact of adult learning programs has and is helping to transform the academy and…

  7. Can You Keep Learners Online?

    ERIC Educational Resources Information Center

    Zielinski, Dave

    2000-01-01

    Reasons people do not complete online training courses include (1) no incentives, (2) lack of connectedness, (3) learner preference for instructor-led courses, (4) poor course design, (5) "some is enough," and (6) lack of perks. Course delivery must consider three elements: the technology, course design, and the learning environment. (JOW)

  8. Recently Discovered Pulsars and Unidentified Egret Sources

    NASA Astrophysics Data System (ADS)

    Torres, Diego F.; Butt, Yousaf M.; Camilo, Fernando

    2001-10-01

    We present a correlative study between all unidentified EGRET sources at low Galactic latitudes and the newly discovered pulsars in the released portion of the Parkes multibeam radio survey. We note 14 positional coincidences: eight of these are ``Vela-like'' pulsars with relatively small periods, small characteristic ages, and high spin-down luminosities. Three of these coincidences have been investigated by D'Amico et al. and Camilo et al. Among the others, we argue that PSR J1015-5719 may plausibly generate part of the high-energy radiation observed from 3EG J1014-5705. Three additional interesting cases are 3EG J1410-6147, either of PSRs J1412-6145 or J1413-6141 if the pulsars are at the estimated distance of the coincident SNR G312.4-0.4, and 3EG J1639-4702/PSR J1637-4642. The remaining positional coincidences between the EGRET sources and the newly discovered pulsars are almost certainly spurious.

  9. 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

  10. 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

  11. The Effects of an Enhanced Quality Physical Education Programme on the Physical Activity Levels of Grade 7 Learners in Potchefstroom, South Africa

    ERIC Educational Resources Information Center

    Tian, Haili; du Toit, Dorita; Toriola, Abel L.

    2017-01-01

    Background: The absence of Physical Education (PE) from the South African school curriculum before its reintroduction in recent years contributed to health concerns regarding the low physical activity (PA) levels of children and adolescents in South Africa. Purpose: This study evaluated the effects of a once-a-week enhanced quality PE programme on…

  12. 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.

  13. 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…

  14. 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…

  15. Discovering Influential Nodes for SIS Models in Social Networks

    NASA Astrophysics Data System (ADS)

    Saito, Kazumi; Kimura, Masahiro; Motoda, Hiroshi

    We address the problem of efficiently discovering the influential nodes in a social network under the susceptible/infected/susceptible (SIS) model, a diffusion model where nodes are allowed to be activated multiple times. The computational complexity drastically increases because of this multiple activation property. We solve this problem by constructing a layered graph from the original social network with each layer added on top as the time proceeds, and applying the bond percolation with pruning and burnout strategies. We experimentally demonstrate that the proposed method gives much better solutions than the conventional methods that are solely based on the notion of centrality for social network analysis using two large-scale real-world networks (a blog network and a wikipedia network). We further show that the computational complexity of the proposed method is much smaller than the conventional naive probabilistic simulation method by a theoretical analysis and confirm this by experimentation. The properties of the influential nodes discovered are substantially different from those identified by the centrality-based heuristic methods.

  16. 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.

  17. 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.

  18. Discovering chemistry with an ab initio nanoreactor

    NASA Astrophysics Data System (ADS)

    Martinez, Todd

    Traditional approaches for modeling chemical reaction networks such as those involved in combustion have focused on identifying individual reactions and using theoretical approaches to explore the underlying mechanisms. Recent advances involving graphical processing units (GPUs), commodity products developed for the videogaming industry, have made it possible to consider a distinct approach wherein one attempts to discover chemical reactions and mechanisms. We provide a brief summary of these developments and then discuss the concept behind the ``ab initio nanoreactor'' which explores the space of possible chemical reactions and molecular species for a given stoichiometry. The nanoreactor concept is exemplified with an example to the Urey-Miller reaction network which has been previously advanced as a potential model for prebiotic chemistry. We briefly discuss some of the future directions envisioned for the development of this nanoreactor concept.

  19. Newly discovered insect RNA viruses in China.

    PubMed

    Qiu, Yang; Wang, ZhaoWei; Liu, YongXiang; Qi, Nan; Si, Jie; Xiang, Xue; Xia, XiaoLing; Hu, YuanYang; Zhou, Xi

    2013-08-01

    Insects are a group of arthropods and the largest group of animals on Earth, with over one million species described to date. Like other life forms, insects suffer from viruses that cause disease and death. Viruses that are pathogenic to beneficial insects cause dramatic economic losses on agriculture. In contrast, viruses that are pathogenic to insect pests can be exploited as attractive biological control agents. All of these factors have led to an explosion in the amount of research into insect viruses in recent years, generating impressive quantities of information on the molecular and cellular biology of these viruses. Due to the wide variety of insect viruses, a better understanding of these viruses will expand our overall knowledge of their virology. Here, we review studies of several newly discovered RNA insect viruses in China.

  20. 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.

  1. 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/

  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. 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.

  4. 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.

  5. 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.

  6. 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

  7. Discovering chemistry with an ab initio nanoreactor

    DOE PAGES

    Wang, Lee-Ping; Titov, Alexey; McGibbon, Robert; ...

    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

  8. 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.

  9. 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…

  10. 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…

  11. More Evidence Concerning the Aspect Hypothesis: The Acquisition of English Progressive Aspect by Catalan-Spanish Instructed Learners

    ERIC Educational Resources Information Center

    Munoz, Carmen; Gilabert, Roger

    2011-01-01

    A robust finding from studies investigating the Aspect Hypothesis is that learners at the early stages of acquisition show a strong preference for using the progressive aspect as associated with activity verbs. As they advance in their acquisition of the second or foreign language, learners move from this prototypical association to associations…

  12. 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.…

  13. Learner-Formulated Questions in Technology-Supported Learning Applications.

    ERIC Educational Resources Information Center

    Heinrich, Eva; Johnson, Russell; Luo, Daoshui; Maurer, Hermann; Sapper, Marianne

    This paper looks at learner-formulated questions in technology-supported learning applications. Traditionally, technology-supported learning applications request input from the learner. The learner's response is used to assess the knowledge of the learner, to define a navigation path through the material or to construct a learner model. The…

  14. 76 FR 4393 - Discover Financial Services Negotiated Service Agreement

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-25

    ... Discover Financial Services Negotiated Service Agreement AGENCY: Postal Regulatory Commission. ACTION... Financial Services negotiated service agreement to the market dominant product list. This notice addresses... 3020, et seq., to add a Discover Financial Services (DFS) negotiated service agreement to the...

  15. 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

  16. 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

  17. 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

  18. 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.

  19. Visualization for learners: a framework for adapting scientists' tools

    NASA Astrophysics Data System (ADS)

    Edelson, Daniel C.; Gordin, Douglas

    1998-08-01

    The use of scientific investigation tools for education is receiving considerable attention as a result of an increased emphasis in the educational community on open-ended inquiry. The scientific community possesses a treasure trove of tools that could be adapted for use by learners. Scientific visualization technologies, in particular, offer great promise for education because of the way they use visual representations to facilitate exploration of complex data. However, the tools that are used by scientists are inappropriate for learners because of their reliance on the tacit knowledge of expert users. Through a careful consideration of the differences between scientists and science students and the design of a series of scientific visualization environments for learners in grades 8-16, we have developed a design framework for the creation of scientific investigation tools based on those of scientists. The framework highlights five critical issues for the construction of tools to support inquiry-based learning: motivating context, learner-appropriate activities, data selection, scaffolding interfaces and support for learning. We have applied this framework to the design of ClimateWatcher, a scientific visualization environment for the investigation of issues related to global climate and climate change that is now in use in middle school, high school and university settings.

  20. 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)

  1. 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

  2. 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.

  3. Has the Higgs boson been discovered?

    PubMed

    Renton, Peter

    2004-03-11

    The standard model of particle physics describes the strong and electroweak interactions of fermions (spin-1/2), gauge bosons (spin-1) and a final vital ingredient--the spin-0 Higgs boson, which gives masses to the other particles. But the Higgs boson has yet to be discovered, and its own mass is not specified by the theory. There is some evidence (although statistically not very significant) for its detection at a mass of about 115 GeV/c2, from electron-positron interactions at LEP (the Large Electron Positron collider). Indirect methods can also be used to constrain the mass of the Higgs boson, because it affects other observable quantities (for example, the mass of the W boson and some measurable properties of the Z boson). An indirect determination of the Higgs boson mass from the most recent measurements of such quantities yields a value compatible with 115 GeV/c2, but with some important caveats arising from inconsistencies in the present data.

  4. 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.

  5. 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.

  6. 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…

  7. 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…

  8. Language Learner Strategy Use and Test Performance of Chinese Learners of English

    ERIC Educational Resources Information Center

    Song, Xiaomei; Cheng, Liying

    2006-01-01

    This article examines language learner strategy use reported by 121 Chinese learners of English through a questionnaire and the relationships between their strategy use and language performance on a national English proficiency test: College English Test-Band 4. Results showed that this group of learners reported using more metacognitive…

  9. Perceptions of a Learner's Self-Expressive Speech by an Instructor and the Learner

    ERIC Educational Resources Information Center

    Yoshida, Reiko

    2007-01-01

    Learners' spontaneous speech beyond interaction patterns such as teacher's initiation-learner's response-teacher's evaluation (I-R-E/F) (Heap, 1988; Mehan, 1979; Ohta, 1999) helps lead them to negotiated interaction (Boulima, 1999), which is effective for foreign language learning. This study examines both an instructor's and a learner's…

  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. 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…

  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. 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…

  14. 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…

  15. 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…

  16. Discovering Engangered Species. A Learning and Activity Book.

    ERIC Educational Resources Information Center

    Field, Nancy; Machlis, Sally

    Up to 33 million species share the earth; no one knows the exact number for sure. All over the world, many species are becoming extinct. This workbook is designed to help children become more aware of the concept of extinction, and to develop personal strategies for helping with the problem of endangered species. Included are 31 activities…

  17. tirant, a Newly Discovered Active Endogenous Retrovirus in Drosophila simulans

    PubMed Central

    Akkouche, Abdou; Rebollo, Rita; Burlet, Nelly; Esnault, Caroline; Martinez, Sonia; Viginier, Barbara; Terzian, Christophe; Vieira, Cristina

    2012-01-01

    Endogenous retroviruses have the ability to become permanently integrated into the genomes of their host, and they are generally transmitted vertically from parent to progeny. With the exception of gypsy, few endogenous retroviruses have been identified in insects. In this study, we describe the tirant endogenous retrovirus in a subset of Drosophila simulans natural populations. By focusing on the envelope gene, we show that the entire retroviral cycle (transcription, translation, and retrotransposition) can be completed for tirant within one population of this species. PMID:22278247

  18. 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,…

  19. 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

  20. 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…

  1. Adult learner centered processes in an online ADRN to BSN nursing program: independent evaluator and peer self-assessments.

    PubMed

    Shuster, George; Birkholz, Gloria; Petri, Linda

    2007-01-01

    A five year fully online RN to BSN program was assessed by faculty and a consultant using the Robert Wood Johnson Foundation's Partnerships for Training (PFT) learner-centered evaluation tool. Faculty were more critical of their expertise in learner-centered online course criteria than the consultant. The consultant identified minimal use of peer support, collaborative activities, faculty preference for visual learner activities, and a tendency toward faculty ownership of learning goals and creation of activity rules and guidelines. The need to bring online discussions to a higher level of thinking was also noted. The dual evaluation perspectives helped identify strengths and weaknesses in the curriculum.

  2. 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)

  3. 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

  4. How Many Colors in Your Computer? Discovering the Rules for Making Colors.

    ERIC Educational Resources Information Center

    Journal of Chemical Education, 1998

    1998-01-01

    Describes a student activity that focuses on color and the production of images on computer monitors. Students discover the rules for making colors through the use of a magnifying glass and a computer monitor. Includes some tips for integrating the activity into the curriculum. (DDR)

  5. 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…

  6. Learner-Generated Noticing Behavior by Novice Learners: Tracing the Effects of Learners' L1 on Their Emerging L2

    ERIC Educational Resources Information Center

    Park, Eun Sung

    2013-01-01

    This study examines novice learners' self-generated input noticing approaches and strategies. It is motivated by previous research on input enhancement which yielded insights that learners are naturally prone to notice certain aspects of L2 input on their own without any external means to channel their attention. Two L1 groups (Japanese and…

  7. NLRC5: a newly discovered MHC class I transactivator (CITA).

    PubMed

    Meissner, Torsten B; Li, Amy; Kobayashi, Koichi S

    2012-06-01

    Major histocompatibility complex (MHC) class I and class II are crucial for the function of the human adaptive immune system. An NLR protein, CIITA (MHC class II transactivator), is a master regulator of MHC class II gene expression as well as of some of the genes involved in MHC class II antigen presentation. It has recently been discovered that another member of the NLR protein family, NLRC5, transcriptionally activates MHC class I genes, and thus acts as "CITA" (MHC class I transactivator), a counterpart to CIITA. In addition to MHC class I genes, NLRC5 can induce the expression of β2M, TAP1 and LMP2, essential components of MHC class I antigen presentation. These findings indicate that NLRC5 and CIITA are transcriptional regulators that orchestrate the concerted expression of critical components in the MHC class I and MHC class II pathways, respectively.

  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. 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:…

  10. 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…

  11. 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,…

  12. 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.

  13. 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

  14. 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

  15. The Impact of Discovering Life beyond Earth

    NASA Astrophysics Data System (ADS)

    Dick, Steven J.

    2016-01-01

    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

  16. 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…

  17. 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…

  18. 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,…

  19. Iranian University English Learners' Discursive Demotivation Construction

    ERIC Educational Resources Information Center

    Rashidi, Nasser; Rahimi, Mohammad; Alimorad, Zahra

    2014-01-01

    Investigating how foreign language learners' discourse mediates their demotivation construction is a relatively new area of inquiry. This paper examined the discursive construction of four (two males and two females) Iranian English as a Foreign Language (EFL) learners' demotivation at Shiraz University, Iran. Employing Fairclough's (2003)…

  20. 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,…

  1. 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…

  2. 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…

  3. 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…

  4. Prospective Teachers' Metaphorical Conceptualizations of Learner

    ERIC Educational Resources Information Center

    Saban, Ahmet

    2010-01-01

    This study investigated the metaphorical images that prospective teachers in Turkey formulated to describe learners. Participants (N = 2847) completed the prompt "A student is like ... because ..." to indicate their conceptualizations of learner. Data were analyzed both qualitatively and quantitatively. Altogether 98 well-articulated…

  5. 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…

  6. 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…

  7. Self-Esteem among Adult Literacy Learners

    ERIC Educational Resources Information Center

    Lipnevich, Anastasiya; Beder, Hal

    2007-01-01

    The purpose of this study was to investigate adult literacy education learners' self-esteem and to examine the relationship between self-esteem and measures of achievement in reading and math. The rationale for the present study stemmed from the lack of research into adult literacy students' self-esteem levels. More than 200 learners enrolled in…

  8. 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…

  9. 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…

  10. 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…

  11. 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…

  12. 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…

  13. 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,…

  14. 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…

  15. 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…

  16. 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…

  17. 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 frequency on…

  18. Can Code Switching Enhance Learners' Academic Achievement?

    ERIC Educational Resources Information Center

    Simasiku, Liswani; Kasanda, Choshi; Smit, Talita

    2015-01-01

    There has been a high failure rate of Grade 10 learners in the year end examinations in the Caprivi Education Region of Namibia over a number of years. The objective of this study was to investigate whether the use of mother tongue in English medium classrooms enhanced learners' academic achievement.The study investigated 12 teachers at 12 schools…

  19. Reading Assessment and Instruction for All Learners

    ERIC Educational Resources Information Center

    Schumm, Jeanne Shay, Ed.

    2006-01-01

    Weaving together the latest knowledge and best practices for teaching children to read, this indispensable text and professional resource provides a complete guide to differentiated instruction for diverse learners. Uniquely integrative, the book places the needs of English language learners and students with disabilities front and center instead…

  20. 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.…

  1. Adult Learning and Learners. PREL Briefing Paper.

    ERIC Educational Resources Information Center

    Timarong, Alvina; Temaungil, Marianne; Sukrad, Wilma

    A survey of literature on adult learning and learners conducted for Palau Community College (PCC), Koror, Palau, found a lack of literature specific to the United States-affiliated Pacific region. Background information was compiled on development of formal education in Palau. A survey was administered in fall 2001 to adult learners working toward…

  2. 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.

  3. 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…

  4. 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…

  5. 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…

  6. 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.…

  7. Online Metacognitive Tasks for EFL Distance Learners

    ERIC Educational Resources Information Center

    Garcia-Sanchez, Soraya

    2016-01-01

    Online courses have benefited from the adequate use of digital resources that allow learners to be the center of their own learning process. More often online instructors not only aim at what students have to individually do but learners are also engaged in interacting with the educational community by means of a variety of metacognitive…

  8. 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…

  9. "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…

  10. 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

  11. 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.

  12. 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)…

  13. 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

  14. Structural characterization of a serendipitously discovered bioactive macromolecule, lignin sulfate.

    PubMed

    Raghuraman, Arjun; Tiwari, Vaibhav; Thakkar, Jay N; Gunnarsson, Gunnar T; Shukla, Deepak; Hindle, Michael; Desai, Umesh R

    2005-01-01

    The herpes simplex virus-1 (HSV-1) utilizes cell-surface glycosaminoglycan, heparan sulfate, to gain entry into cells and cause infection. In a search for synthetic mimics of heparan sulfate to prevent HSV infection, we discovered potent inhibitory activity arising from sulfation of a monomeric flavonoid. Yet, detailed screening indicated that the sulfated flavonoid was completely inactive and the potent inhibitory activity arose from a macromolecular substance present in the parent flavonoid. The active principle was identified through a battery of biophysical and chemical analyses as a sulfated form of lignin, a three-dimensional network polymer composed of substituted phenylpropanoid monomers. Mass spectral analysis of the parent lignin and its sulfated derivative indicates the presence of p-coumaryl monomers interconnected through uncondensed beta-O-4-linkages. Elemental analysis of lignin sulfate correlates primarily with a polymer of p-coumaryl alcohol containing one sulfate group. High-performance size exclusion chromatography shows a wide molecular weight distribution from 1.5 to 40 kDa suggesting significant polydispersity. Polyacrylamide gel electrophoresis (PAGE) analysis indicates a highly networked polymer that differs significantly from linear charged polymers with respect to its electrophoretic mobility. Overall, macromolecular lignin sulfate presents a multitude of substructures that can interact with biomolecules, including viral glycoproteins, using hydrophobic, hydrogen-bonding, and ionic forces. Thus, lignin sulfate represents a large number of interesting structures with potential medicinal benefits.

  15. Second language listening difficulties perceived by low-level learners.

    PubMed

    Chang, Anna C-S; Wu, Bill Wen-Pin; Pang, Jerry C-L

    2013-04-01

    The purpose was the develop a questionnaire to identify the specific listening difficulties of second language (L2) learners. Based on previous research, a questionnaire containing 31 items was developed and administered to 1,056 college freshmen. The whole sample was split randomly into two subsamples, each containing 528 cases. Exploratory factor analysis was performed to analyse the first subsample, and six factors were extracted, explaining a total of 57.1% of variance. To test the factor model, confirmatory factor analysis was conducted with the second subsample. Various fit indices were examined. The best fitting model for the data was a 23-item, six-factor model representing text, input channel and surroundings, relevance, listener, speaker, and task. Apart from the listener factor, all components are external ones and deemed to be uncontrollable by listeners. L2 learners must take an active role in listening practice to overcome L2 listening difficulties.

  16. Discovering Chemical Aromaticity Using Fragrant Plants

    ERIC Educational Resources Information Center

    Schneider, Tanya L.

    2010-01-01

    Introductory organic chemistry is often perceived as inaccessible by students. This article describes a method used to link organic chemistry to everyday experience, asking students to explore whether fragrant molecules are also aromatic in the chemical sense. Students were engaged in this activity, excited about their results, and performed well…

  17. Discover a Watershed: The Colorado Educators Guide

    ERIC Educational Resources Information Center

    Project WET Foundation, 2005

    2005-01-01

    This engaging, informative "Educators Guide" provides detailed background information about the Colorado Watershed. Its reference section contains 25 science-based, multidisciplinary, hands-on activities that teach about hydrology, geography, geology, ecology, tribes, history, cultures, economics, management issues and resource…

  18. Shelterwood Teacher's Guide: Discovering the Forest.

    ERIC Educational Resources Information Center

    Markowsky, Judy Kellogg

    This teacher's guide explores forest diversity, from learning about different kind of trees to understanding how the layers in a forest provide habitat for all kinds of animals and insects. Each chapter offers useful introductory material and clear objectives, followed by fun activities that encourage exploration while teaching important skills.…

  19. Trend-Setters and Other Types of Lifelong Learners.

    ERIC Educational Resources Information Center

    du Bois-Reymond, Manuela

    Learners may be categorized as follows: (1) intrinsically motivated intellectuals; (2) extrinsically motivated mass learners, as represented by modern school youth; (3) extrinsically motivated learners in continuous requalification; and (4) intrinsically motivated "trendsetters." Although intrinsically motivated learners tend to be found…

  20. Using Individualized Learning Plans to Facilitate Learner-Centered Teaching.

    PubMed

    Lockspeiser, Tai M; Kaul, Paritosh

    2016-06-01

    Individualized learning plans (ILPs) are helpful tools that can facilitate learner-centered education and can be used with all levels of learners. We introduce the concept of ILPs, the rationale for their use in pediatric and adolescent gynecology education, and review the challenges that learners might face in creating ILPs, and describes how educators can support learners during this process.

  1. 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.…

  2. 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…

  3. Learner Autonomy: Learning from the Student's Voice. CLCS Occasional Paper.

    ERIC Educational Resources Information Center

    Usuki, Miyuki

    This paper focuses on learner autonomy, noting that learner autonomy is not a matter of institutional mode but of learners' internal attitudes, and that learner autonomy entails an awareness of both self-direction and collaboration between the teacher and students and between students and students. The paper suggests that a teacher's attitude…

  4. Effects of Review Activities on EFL Learning

    ERIC Educational Resources Information Center

    Lin, Chiu-Lan Nina

    2009-01-01

    The utmost goal of foreign language instruction is aimed at helping the learner master the language. At the same time the learner shall become equipped with linguistic, pragmatic and social-linguistic competence. This study was done to explore if review activities in EFL classes should be mandatory for learners to learn the new knowledge. One…

  5. Discover--Deepen--Do: A 3D Pedagogical Approach for Developing Newly Qualified Teachers as Professional Learners

    ERIC Educational Resources Information Center

    Graham, Sally; Lester, Nicola; Dickerson, Claire

    2012-01-01

    This article presents a strategy for teaching newly qualified teachers (NQTs) during their first year of teaching, developed by teacher educators from the University of Hertfordshire School of Education. The strategy included a new learning and teaching approach designed to enable NQTs to: develop as critically reflective teachers; build…

  6. Most Powerful Eruption in the Universe Discovered

    NASA Astrophysics Data System (ADS)

    2005-01-01

    emission within the cavities shows that jets from the black hole erupted to create the cavities. Gas is being pushed away from the black hole at supersonic speeds over a distance of about a million light years. The mass of the displaced gas equals about a trillion Suns, more than the mass of all the stars in the Milky Way. LA Radio & Chandra X-ray Composite of MS 0735.6+7421 VLA Radio & Chandra X-ray Composite of MS 0735.6+7421 The rapid growth of supermassive black holes is usually detected by observing very bright radiation from the centers of galaxies in the optical and X-ray wavebands, or luminous radio jets. In MS 0735 no bright central radiation is found and the radio jets are faint. Therefore, the true nature of MS 0735 is only revealed through X-ray observations of the hot cluster gas. "Until now we had no idea that this black hole was gorging itself", said co-author Michael Wise of the Massachusetts Institute of Technology. "The discovery of this eruption shows that X-ray telescopes are necessary to understand some of the most violent events in the Universe." The astronomers estimated how much energy was needed to create the cavities by calculating the density, temperature and pressure of the hot gas. By making a standard assumption, that 10% of the gravitational energy goes into launching the jets, they estimated how much material the black hole swallowed. Size Comparison of MS 0735.6+7421 & Perseus Cluster Size Comparison of MS 0735.6+7421 & Perseus Cluster Besides generating the cavities, some of the energy from this eruption should keep the hot gas around the black hole from cooling, and some of it may also generate large-scale magnetic fields in the galaxy cluster. Chandra observers have discovered other cavities in galaxy clusters, but this one is easily the largest and the most powerful. For example, the energy content here exceeds that of the Perseus cavities by 250 times, and dwarfs the cavities in M87 by a factor of 10,000. NASA's Marshall Space Flight

  7. 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).

  8. Toxic wastes discovered in Cecil County, MD

    SciTech Connect

    1994-12-31

    This report focuses on the clean-up activities following toxic waste contamination in Cecil County, MD. The potentially hazardous leakage from waste containers buried in a quarry was addressed before it was turned into a civil emergency of the magnitude of Love Canal. US Superfund is a federal government trust fund largely comprised of taxes on the chemical and petrochemical industries. Local governments share in the cost of removing the waste and other aspects of emergency management.

  9. Toxic wastes discovered in Cecil County, MD

    SciTech Connect

    Not Available

    1994-01-01

    This report focuses on the clean-up activities following toxic waste contamination in Cecil County, MD. The potentially hazardous leakage from waste containers buried in a quarry was addressed before it was turned into a civil emergency of the magnitude of Love Canal. US Superfund is a federal government trust fund largely comprised of taxes on the chemical and petrochemical industries. Local governments share in the cost of removing the waste and other aspects of emergency management.

  10. 33 CFR 179.05 - Manufacturer discovered defects.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Manufacturer discovered defects. 179.05 Section 179.05 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) BOATING SAFETY DEFECT NOTIFICATION § 179.05 Manufacturer discovered defects. Each...

  11. 33 CFR 179.05 - Manufacturer discovered defects.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Manufacturer discovered defects. 179.05 Section 179.05 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) BOATING SAFETY DEFECT NOTIFICATION § 179.05 Manufacturer discovered defects. Each...

  12. DISCOVER-AQ Aircraft insitu TraceGas Data (ICT)

    Atmospheric Science Data Center

    2017-03-31

    ... Project Title:  N/A Platform:  NASA P-3B Spatial Coverage:  (37.84, 39.81), (-77.03, -75.18) ... Data for Atmospheric Composition DISCOVER-AQ - NASA Earth Science Mission DISCOVER-AQ - Program Home Page ...

  13. DISCOVER-AQ Aircraft insitu Aerosol Data (ICT)

    Atmospheric Science Data Center

    2017-03-31

    ... Project Title:  N/A Platform:  NASA P-3B Spatial Coverage:  (37.84, 39.81), (-77.03, -75.18) ... Data for Atmospheric Composition DISCOVER-AQ - NASA Earth Science Mission DISCOVER-AQ - Program Home Page ...

  14. DISCOVER-AQ Aircraft Navigational Data P3B (ICT)

    Atmospheric Science Data Center

    2017-03-31

    ... Project Title:  N/A Platform:  NASA P-3B Spatial Coverage:  (37.84, 39.81), (-77.03, -75.18) ... Data for Atmospheric Composition DISCOVER-AQ - NASA Earth Science Mission DISCOVER-AQ - Program Home Page ...

  15. Youngest Stellar Explosion in Our Galaxy Discovered

    NASA Astrophysics Data System (ADS)

    2008-05-01

    Astronomers have found the remains of the youngest supernova, or exploded star, in our Galaxy. The supernova remnant, hidden behind a thick veil of gas and dust, was revealed by the National Science Foundation's Very Large Array (VLA) and NASA's Chandra X-Ray Observatory, which could see through the murk. The object is the first example of a "missing population" of young supernova remnants. 1985 and 2008 VLA Images Move cursor over image to blink. VLA Images of G1.9+0.3 in 1985 and 2008: Circle for size comparison. CREDIT: Green, et al., NRAO/AUI/NSF From observing supernovae in other galaxies, astronomers have estimated that about three such stellar explosions should occur in our Milky Way every century. However, the most recent one known until now occurred around 1680, creating the remnant called Cassiopeia A. The newly-discovered object is the remnant of an explosion only about 140 years ago. "If the supernova rate estimates are correct, there should be the remnants of about 10 supernova explosions in the Milky Way that are younger than Cassiopeia A," said David Green of the University of Cambridge in the UK, who led the VLA study. "It's great to finally track one of them down." Supernova explosions, which mark the violent death of a star, release tremendous amounts of energy and spew heavy elements such as calcium and iron into interstellar space. They thus seed the clouds of gas and dust from which new stars and planets are formed and, through their blast shocks, can even trigger such formation. The lack of evidence for young supernova remnants in the Milky Way had caused astronomers to wonder if our Galaxy, which appears otherwise normal, differed in some unknown way from others. Alternatively, scientists thought that the "missing" Milky Way supernovae perhaps indicated that their understanding of the relationship between supernovae and other galactic processes was in error. The astronomers made their discovery by measuring the expansion of the debris from

  16. A New Approach of an Intelligent E-Learning System Based on Learners' Skill Level and Learners' Success Rate

    ERIC Educational Resources Information Center

    Mohamed, Hafidi; Lamia, Mahnane

    2015-01-01

    Learners usually meet cognitive overload and disorientation problems when using e-learning system. At present, most of the studies in e-learning either concentrate on the technological aspect or focus on adapting learner's interests or browsing behaviors, while, learner's skill level and learners' success rate is usually neglected. In this paper,…

  17. 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.

  18. Separation Anxiety: An in-Class Game Designed to Help Students Discover Chromatography

    ERIC Educational Resources Information Center

    Samide, Michael J.

    2008-01-01

    An in-class activity has been developed to assist students in discovering chromatographic separations. Designed on the basis of plate theory, the game has students use instructor-provided partition coefficients to establish equilibrium for two different items between a stationary and mobile phase. As students work through equilibration and mobile…

  19. "Discovering the Cell": An Educational Game about Cell and Molecular Biology

    ERIC Educational Resources Information Center

    Spiegel, Carolina N.; Alves, Gutemberg G.; Cardona, Tania da S.; Melim, Leandra M. C.; Luz, Mauricio R. M. P.; Araujo-Jorge, Tania C.; Henriques-Pons, Andrea

    2008-01-01

    The role of games within education becomes clearer as students become more active and are able to take decisions, solve problems and react to the results of those decisions. The educational board game "Discovering the Cell" ("Celula Adentro"), is based on problem-solving learning. This investigative game attempts to stimulate…

  20. Building a City: A Spin Off Project. Part II of Students Discovering Cities.

    ERIC Educational Resources Information Center

    Weiler, Adele

    1988-01-01

    Discusses "Students Discovering Cities" and related activities, explaining how the program evolved into a city planning project for fourth graders in West Jordan, Utah. Describes the final stage of the project in which students "built" their city inside the school gymnasium, complete with streets, lights, cardboard buildings,…