Quality and relevance of domain-specific search: A case study in mental health     

Thanh Tin Tang  Nick Craswell  David Hawking  Kathy Griffiths  Helen Christensen 《Information Retrieval》2006,9(2):207-225

When searching for health information, results quality can be judged against available scientific evidence: Do search engines return advice consistent with evidence based medicine? We compared the performance of domain-specific health and depression search engines against a general-purpose engine (Google) on both relevance of results and quality of advice. Over 101 queries, to which the term ‘depression’ was added if not already present, Google returned more relevant results than those of the domain-specific engines. However, over the 50 treatment-related queries, Google returned 70 pages recommending for or against a well studied treatment, of which 19 strongly disagreed with the scientific evidence. A domain-specific index of 4 sites selected by domain experts was only wrong in 5 of 50 recommendations. Analysis suggests a tension between relevance and quality. Indexing more pages can give a greater number of relevant results, but selective inclusion can give better quality.  相似文献   

Views and perspectives of women’s studies: a survey of women and men students     

Jen Marchbank  Gayle Letherby 《Gender and education》2006,18(2):157-182

In this article we draw on data from a completed project entitled Why Do Women’s Studies? involving five English Universities. However, the data reported here focuses on a single institution. The data were collected through questionnaires which combined quantitative and qualitative questions and we have the views of three distinct groups of students: students taking women’s studies as a degree; students taking other degrees but including women’s studies modules and students with no experience of women’s studies. After detailing our method and reflecting on some methodological issues we present and debate our data which shows that although many of the conventional stereotypes regarding women’s studies remain in common discourses they seem to be agreed with less than they are reported to have been heard. Yet, the power of these discourses remains a danger to women’s studies as evidenced by its demise as an undergraduate course in many English institutions.  相似文献   

The selection of instructional options in a computer-based coordinate concept lesson     

Carol Carrier  Gayle Davidson  Michael Williams 《Educational technology research and development : ETR & D》1985,33(3):199-212

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Collaborative Development and Evaluation of an Online Nursing Course     

Judith W. Alexander  Vera Polyakova-Norwood  Linda W. Johnston  Patricia Christensen  Renatta S. Loquist 《Distance Education》2003,24(1):41-56

Institutions of higher education acknowledge that online learning represents a growing segment of the modern learning environment, and most students have mastered basic computer skills. However, reluctance to engage in online learning remains among both faculty and students. This article presents a case study of three schools of nursing that collaboratively developed and implemented an online undergraduate-nursing course. The article discusses the challenges that were encountered by faculty and students. The faculty used the distance education literature to address these challenges related to technological, institutional, and pedagogical aspects of online learning, as well as the recruitment and retention of online learners. Quantitative and qualitative methods were used to evaluate the effectiveness of the course. The paper concludes with suggestions to overcome the challenges of online learning, such that faculty and students receive the inherent rewards.  相似文献   

Disciplinary Literacies and Learning to Read for Understanding: A Conceptual Framework for Disciplinary Literacy     

Susan R. Goldman  M. Anne Britt  Willard Brown  Gayle Cribb  MariAnne George  Cynthia Greenleaf 《教育心理学家》2016,51(2):219-246

This article presents a framework and methodology for designing learning goals targeted at what students need to know and be able to do in order to attain high levels of literacy and achievement in three disciplinary areas—literature, science, and history. For each discipline, a team of researchers, teachers, and specialists in that discipline engaged in conceptual meta-analysis of theory and research on the reading, reasoning, and inquiry practices exhibited by disciplinary experts as contrasted with novices. Each team identified discipline-specific clusters of types of knowledge. Across teams, the clusters for each discipline were grouped into 5 higher order categories of core constructs: (a) epistemology; (b) inquiry practices/strategies of reasoning; (c) overarching concepts, themes, and frameworks; (d) forms of information representation/types of texts; and (e) discourse and language structures. The substance of the clusters gave rise to discipline-specific goals and tasks involved in reading across multiple texts, as well as reading, reasoning, and argumentation practices tailored to discipline-specific criteria for evidence-based knowledge claims. The framework of constructs and processes provides a valuable tool for researchers and classroom teachers' (re)conceptualizations of literacy and argumentation learning goals in their specific disciplines.  相似文献   

The Importance of Teaching and Learning Nature of Science in the Early Childhood Years   总被引：1，自引：0，他引：1  

Valarie L. Akerson  Gayle A. Buck  Lisa A. Donnelly  Vanashri Nargund-Joshi  Ingrid S. Weiland 《Journal of Science Education and Technology》2011,20(5):537-549

Though research has shown that students do not have adequate understandings of nature of science (NOS) by the time they exit high school, there is also evidence that they have not received NOS instruction that would enable them to develop such understandings. How early is “too early” to teach and learn NOS? Are students, particularly young students, not capable of learning NOS due to developmental unreadiness? Or would young children be capable of learning about NOS through appropriate instruction? Young children (Kindergarten through third grade) were interviewed and taught about NOS in a variety of contexts (informal, suburban, and urban) using similar teaching strategies that have been found effective at teaching about NOS with older students. These teaching strategies included explicit decontextualized and contextualized NOS instruction, through the use of children’s literature, debriefings of science lessons, embedded written NOS assessments, and guided inquiries. In each context the researchers interviewed students prior to and after instruction, videotaped science instruction and maintained researcher logs and field notes, collected lesson plans, and copies of student work. The researchers found that in each setting young children did improve their understandings of NOS. Across contexts there were similar understandings of NOS aspects prior to instruction, as well as after instruction. There were also several differences evident across contexts, and across grade levels. However, it is clear that students as young as kindergarten are developmentally capable of conceptualizing NOS when it is taught to them. The authors make recommendations for teaching NOS to young children, and for future studies that explore learning progressions of NOS aspects as students proceed through school.  相似文献   

A Qualitative Examination of the Challenges, Resources, and Strategies for Serving Children Learning English in Head Start     

Emily Worthington  Susan Maude  Kere Hughes  Gayle Luze  Carla Peterson  Mary Jane Brotherson  Katherine Bruna  Molly Luchtel 《Early Childhood Education Journal》2011,39(1):51-60

The dramatic growth in the number of children learning English as a second language in our country has led to a corresponding increase in the need to understand how teachers and schools can effectively teach children who are learning English as a second language. Many teachers report not feeling prepared to meet the needs of these children (National Center for Education Statistics, Teacher preparation and professional development: 2000. , 2002). The current study used focus group interviews to examine how Head Start teachers in one program addressed the special learning needs of children learning English in their classrooms. Key challenges involved communicating with children and their families in their home language. Teachers used other staff, parents, and children in the classroom to interpret. Strategies involved visual aids, pictures, gestures, and a welcoming classroom environment. Resources used by teachers were professional development and language skills of other staff. However, available resources were often underutilized and limited for teachers to use in meeting the challenges the teachers faced in the classroom. Suggestions are presented for overcoming the challenges and limited resources encountered by teachers, such as changes in preservice and inservice training opportunities, and second language learning opportunities for teachers. Further implications for training and research are discussed.  相似文献   

FIRST YEAR IMPLEMENTATION OF A PROJECT-BASED LEARNING APPROACH: THE NEED FOR ADDRESSING TEACHERS�� ORIENTATIONS IN THE ERA OF REFORM     

Meredith A. Park Rogers  Dionne I. Cross  Melissa Sommerfeld Gresalfi  Amy E. Trauth-Nare  Gayle A. Buck 《International Journal of Science and Mathematics Education》2011,9(4):893-917

The purpose of this study was to examine the extent to which three teachers’ professional experience and existing orientations toward teaching and learning mathematics and science influenced their implementation of a project-based curriculum (i.e. project-based learning (PBL)). Data sources included interviews, videotapes of classroom activity, and a teaching philosophy questionnaire. Data analysis was conducted using an iterative coding technique. We found coherency between the teachers’ perceived orientations and their emergent ideas about PBL, their sense of PBL as being compatible with their goals, and the specific challenges with which they struggled. All the teachers wanted their students to be successful; however, different definitions of success led to quite different approaches toward teaching, and for the most part, these differences appeared to have occurred because of existing orientations the teachers held for teaching their discipline. Implications for professional development taking into account teachers’ orientations and thus their professional experience are discussed, as well as disciplinary challenges to using PBL.  相似文献   

Postpartum depression, marital dysfunction, and infant outcome: a longitudinal study          下载免费PDF全文

Roux G  Anderson C  Roan C 《The Journal of perinatal education》2002,11(4):25-36

This longitudinal study explores the relationship of postpartum depression (PPD) and marital dysfunction on infant outcomes from birth to 2 1/2 years of age among middle-class, postpartum women. Participants were recruited during the prenatal period. Twelve mothers completed the study throughout a 2 1/2-year period. Questionnaires, semistructured interviews, and observations were used to collect data. Content analysis of the interviews (Morse & Field, 1995) was conducted and thematic patterns were identified. Clinical PPD and marital dysfunction (defined as little or no support or closeness, or verbal, emotional or physical abuse) characterized nearly one in three mothers. Four themes describing the women's postpartum progression were identified: stress, isolation, resentment, and eventual adjustment by creating a new normal. No major developmental delays or behavioral problems were found among the infants. Eight of the 12 mothers who were initially identified as breastfeeding nursed their infants for 6-18 months. Regardless of financial and educational advantages, mothers in the study experienced depression and marital dysfunction. These findings support other studies that confirm the lack of association of PPD with social class or marital status. Childbirth educators and other health care professionals are encouraged to continue providing expectant families with anticipatory education and community resources in order to increase awareness of mental health and marital risks during the postpartum transition.  相似文献   

Prenatal depression, violence, substance use, and perception of support in pregnant middle-class women          下载免费PDF全文

Anderson C  Roux G  Pruitt A 《The Journal of perinatal education》2002,11(1):14-21

The purpose of this study was to explore the vulnerability for postpartum depression among financially, educationally, and socially advantaged middle-class women (n = 31). Twenty-nine percent reported prenatal depression, 13% reported intimate partner violence, and 22% reported concerns with partner relationships and support expectations after delivery. No illegal substances were reported; however, a past history of smoking and excessive use of caffeine was disclosed. Implications for practice focus on the need to screen and implement intervention programs for these social problems and to adopt measures as a universal standard of care for all women, regardless of demographic advantages.  相似文献