Learner Requirements and Geospatial Literacy Challenges for Making Meaning with Google Earth

This research contributes an educational research perspective to teaching and learning with geospatial technologies. This work considers the literacy of a geospatial text that is readily accessible to students, but often assumed to be intuitive to read– dynamic scalable satellite imagery, which often serves as base maps for common navigation, GIS, and virtual globe applications. Within the context of a STEM project, Grades 5 and 6 students were observed and interviewed to identify knowledge and skills that were required to make meaning of Google Earth imagery. A qualitative methodological approach incorporating a thinkaloud data collection protocol was followed to stay true to the breadth, depth and nuances of the student voice and experience. When engaged with Google Earth, the students were observed to employ a range of image interpretation skills, demonstrated various expertise in navigation, and also drew upon their knowledge of the technology. Challenges to understanding the imagery included dominant alignment effect, dimensional translation, and interpreting the nadir view. Students who had an understanding of the underlying technology of the application were better able to overcome these challenges. These results suggest that ensuring students have knowledge about the technology itself, and basic literacy of satellite imagery, is valuable in order to make meaning of the data, critical at this age when students are developing their mental constructs of the world with such geospatial data

Academic Success Of Non-Traditional Students: Factors Affecting Performance In An Upper-Division Undergraduate Accounting Course

Many assessment activities are conducted within the context of AACSB International reaffirmation of business programs. Central to the AACSB evaluation process is assurance of learning standards. Learning goals vary among institutions because of differences in mission, faculty expectations, and student body composition. The objective of this research is to determine the factors that influence the academic performance of students in upper-level accounting courses and to assess student performance against course learning goals. The study explores the relative importance of both academic and non-academic factors in predicting performance outcomes. The results indicate that several academic factors (GPA, student’s diagnostic exam score, and student’s self-assessment of course learning objectives) are significant in predicting a student’s final numerical course average. The study also examines the association between student achievement of course learning goals and various non-academic demographic and student success factors. The results indicate that student course loads, employment status, marital status, and family responsibilities do not equally impact student learning outcomes. The study extends existing research by using non-traditional students at an upper-division university and a variety of approaches to assess the achievement of course learning goals.&nbsp

The Prevalence of Burnout Among Entry-Level Dental Hygiene Program Directors

Purpose: Workplace burnout in academia is a problem that affects career satisfaction and longevity. The purpose of this study was to determine the prevalence of burnout among entry-level dental hygiene program directors. Methods: The Copenhagen Burnout Inventory (CBI) survey was used to determine prevalence of burnout in 325 dental hygiene program directors from across the United States. The survey was disseminated electronically. The CBI contains 19 questions that measure overall, personal, work-related, and client/student-related burnout on a five-point Likert type scale. The survey also included nine demographic and three open-ended questions related to burnout. Descriptive statistics, one sample t-tests, and one-way ANOVA tests were used to analyze the data. Results: One hundred twenty-seven dental hygiene program directors completed the survey for a 39.1% response rate. Most participants (62.2%, n=79) indicated moderate to high burnout on the personal burnout subscale, approximately one half (51.2%, n=65) on the work-related burnout subscale, and one third (33.1%, n=42) on the client/student-related burnout subscale. No statistically significant differences were found when comparing mean scores between directors of two-year and four-year program or between participants under age 50 and those 50 years of age and older (p-values\u3e0.05). Program directors with teaching workloads of 51-60% had significantly lower burnout on the work-related burnout subscale when compared to participants with teaching workloads of 31-40% (p=0.045). Participants with the lowest workload allocations for administrative duties had higher overall mean burnout scores. Conclusion: Results from this study suggest one out of two dental hygiene program directors have symptoms of some type of burnout with the highest prevalence rate in the personal burnout subscale. Findings underscore the need for further research to identify stressors that lead to burnout as well as identify prevention strategies that promote a healthier work climate for dental hygiene program administrators

Perspectives of time: a qualitative study of the experiences of parents of critically ill newborns in the neonatal nursery in North Queensland interviewed several years after the admission

Design: A qualitative study informed by grounded theory principles to explore the experiences of parents who had extremely preterm or babies with antenatally diagnosed life-Threatening diagnoses who were cared for in a regional tertiary neonatal unit. The study was conducted when the child was old enough to be diagnosed with long-Term neurodevelopmental or medical sequelae. Setting: North Queensland is a large area in Eastern Australia of 500 000 km 2, which is served by one tertiary neonatal unit. Participants: Seventeen families representing 21 extremely preterm babies and one baby with congenital malformations who was not expected to survive prior to delivery (but did) were interviewed using grounded theory principles. Interviews were coded and themes derived. Results: Parents who recollect their neonatal experiences from 3 to 7 years after the baby was cared for in the neonatal intensive care described negative themes of grief and loss, guilt and disempowerment. Positive enhancers of care included parental strengths, religion and culture, family supports and neonatal unit practices. Novel findings included that prior pregnancy loss and infertility formed part of the narrative for parents, and hope was engendered by religion for parents who did not usually have a religious faith. Conclusions: An understanding of both the negative aspects of neonatal care and the positive enhancers is necessary to improve the neonatal experience for parents. Parents are able to contextualise their previous neonatal experiences within both the long-Term outcome for the child and their own life history

Attitudes of Virginia Dentists Toward Dental Therapists: A Pilot Study

Purpose: The purpose of this pilot study was to determine perceptions of Virginia (VA) dentists toward mid-level dental providers, specifically dental therapists (DT), and determine whether membership in the American Dental Association (ADA) membership affected attitudes. Methods: A convenience sample of 1208 dentists in the state of VA were invited to participate in an electronic survey. The instrument consisted of 11 Likert type scale questions assessing attitudes toward DTs. Additional items included the appropriate level of education and supervision of a DT, and five demographic questions. Descriptive statistics were used to analyze the data. A one-sample t-test was used to determine statistical significance for the Likert scale items. Results:An overall response rate of 12% was obtained (n=145). Most respondents were male (73%), members of the ADA (84%), and over the age of 40 (65%). Results suggest that most participants did not perceive (M=1.90, p Conclusions: Virginia dentists surveyed did not perceive a need for DTs and generally reported unfavorable attitudes towards this mid-level provider. Findings support the need for more research with a larger, more diverse sample population

Functional immunoglobulin transgenes guide ordered B-cell differentiation in Rag-1-deficient mice

We have examined the regulatory role of the individual components of the immunoglobulin antigen receptor in B-cell development by transgenic complementation of Rag-1 deficient (Rag-1⁻) mice. Complementation with a membrane µ heavy chain (µHC) gene allows progression of developmentally arrested Rag-1⁻ pro-B-cells to the small pre-B cell stage, whereas the introduction of independently integrated µHC and κ light chain (κLC) transgenes promotes the appearance of peripheral lymphocytes which, however, remain unresponsive to external stimuli. Complete reconstitution of the B-cell lineage and the emergence of functionally nature Rag-1⁻ peripheral B cells is achieved by the introduction of cointegrated heavy and light chain transgenes encoding an anti-H-2^k antibody. This experimental system demonstrates the competence of the µHC and κLC to direct and regulate the sequential stages of B-cell differentiation, defines the time at which negative selection of self-reactive B cells occurs, and shows that elimination of these cells occurs equally well in the absence of Rag-1 as in its presence. These data also support the hypothesis that Rag-1 directly participates in the V(D)J recombination process

Anatomic brain asymmetry in vervet monkeys.

Asymmetry is a prominent feature of human brains with important functional consequences. Many asymmetric traits show population bias, but little is known about the genetic and environmental sources contributing to inter-individual variance. Anatomic asymmetry has been observed in Old World monkeys, but the evidence for the direction and extent of asymmetry is equivocal and only one study has estimated the genetic contributions to inter-individual variance. In this study we characterize a range of qualitative and quantitative asymmetry measures in structural brain MRIs acquired from an extended pedigree of Old World vervet monkeys (n = 357), and implement variance component methods to estimate the proportion of trait variance attributable to genetic and environmental sources. Four of six asymmetry measures show pedigree-level bias and one of the traits has a significant heritability estimate of about 30%. We also found that environmental variables more significantly influence the width of the right compared to the left prefrontal lobe

Sediment-Induced Amplification in the Northeastern United States: a Case Study in Providence, Rhode Island

We employed ambient-noise measurements to assess the potential for seismic site response in sediment-filled valleys that intersect beneath downtown Providence, Rhode Island. At eight valley stations and at two sites on an adjacent bedrock highland, we recorded ground motion from two types of sources: pile drivers at a local construction site and ambient microtremors. At all valley sites where sediment thicknesses exceed 10 m, spectral ratios contain amplitude peaks at frequencies of 1.5 to 3.0 Hz. In contrast, spectral ratios from the two sites on the bedrock highland where sediment cover is less than 4-m thick are relatively flat within this frequency range. A variety of borehole logs identified two fundamental sediment types (soft sediment and a consolidated glacial till) and were used to map layer thicknesses over the entire study region. Refraction data constrained P-wave velocity in the bedrock to be 3680 ± 160 m/sec and indicated two soft-sediment layers with P-wave velocities of 300 ± 50 and 1580 ± 120 m/sec. Using a one-dimensional reflection matrix technique, we matched the spectral-ratio peak observed at each valley site with the frequency of fundamental resonance predicted for local layer thicknesses and velocities. A positive correlation between the best-fitting soft-sediment velocities and bedrock depth may reflect greater compaction in the deepest sediments or a locally two-dimensional sediment resonance at the deepest sediment sites. We conclude that unconsolidated sediment layers under downtown Providence have the potential to amplify earthquake ground motion at frequencies damaging to engineered structures

Lineage specification and plasticity in CD19− early B cell precursors

We describe here three CD19− B cell precursor populations in mouse bone marrow identified using 12-color flow cytometry. Cell transfer experiments indicate lineage potentials consistent with multilineage progenitor (MLP), common lymphoid progenitor (CLP), and B lineage–restricted pre-pro–B (Fr. A), respectively. However, single cell in vitro assays reveal lineage plasticity: lymphoid/myeloid lineage potential for CLP and B/T lineage potential for Fr. A. Despite myeloid potential, recombination activating gene 2 reporter activation is first detected at low levels in most MLP cells, with 95% of CLPs showing 10-fold increased levels. Furthermore, single cell analysis shows that half of CLP and 90% of Fr. A cells contain heavy chain DJ rearrangements. These data, together with expression profiles of lineage-specific genes, demonstrate progressive acquisition of B lineage potential and support an asynchronous view of early B cell development, in which B lineage specification initiates in the MLP/CLP stage, whereas myeloid potential is not lost until the pre-pro–B (Fr. A) stage, and B/T lymphoid plasticity persists until the CD19+ pro–B stage. Thus, MLP, CLP, and Fr. A represent progressively B lineage–specified stages in development, before the CD19+ B lineage–committed pro–B stage