1,616 research outputs found

    Scholars Forum: A New Model For Scholarly Communication

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    Scholarly journals have flourished for over 300 years because they successfully address a broad range of authors' needs: to communicate findings to colleagues, to establish precedence of their work, to gain validation through peer review, to establish their reputation, to know the final version of their work is secure, and to know their work will be accessible by future scholars. Eventually, the development of comprehensive paper and then electronic indexes allowed past work to be readily identified and cited. Just as postal service made it possible to share scholarly work regularly and among a broad readership, the Internet now provides a distribution channel with the power to reduce publication time and to expand traditional print formats by supporting multi-media options and threaded discourse. Despite widespread acceptance of the web by the academic and research community, the incorporation of advanced network technology into a new paradigm for scholarly communication by the publishers of print journals has not materialized. Nor have journal publishers used the lower cost of distribution on the web to make online versions of journals available at lower prices than print versions. It is becoming increasingly clear to the scholarly community that we must envision and develop for ourselves a new, affordable model for disseminating and preserving results, that synthesizes digital technology and the ongoing needs of scholars. In March 1997, with support from the Engineering Information Foundation, Caltech sponsored a Conference on Scholarly Communication to open a dialogue around key issues and to consider the feasibility of alternative undertakings. A general consensus emerged recognizing that the certification of scholarly articles through peer review could be "decoupled" from the rest of the publishing process, and that the peer review process is already supported by the universities whose faculty serve as editors, members of editorial boards, and referees. In the meantime, pressure to enact regressive copyright legislation has added another important element. The ease with which electronic files may be copied and forwarded has encouraged publishers and other owners of copyrighted material to seek means for denying access to anything they own in digital form to all but active subscribers or licensees. Furthermore, should publishers retain the only version of a publication in a digital form, there is a significant risk that this material may eventually be lost through culling little-used or unprofitable back-files, through not investing in conversion expense as technology evolves, through changes in ownership, or through catastrophic physical events. Such a scenario presents an intolerable threat to the future of scholarship

    Professional Development: Ignatian Principles at Work With Teachers of Underserved Students

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    This article describes a professional development project for teachers in an underserved urban school in Buffalo, NY, centered on Ignatian Spirituality and the Jesuit, Catholic identity. During a time when the number of Jesuit priests has diminished, our universities look to academic departments, programs and other areas of campuses to engage their staffs and students in the teachings of St. Ignatius and the Jesuit tradition. Our professional partnerships with local underserved schools at Canisius College are based upon Ignatian principles to benefit the critical needs of teachers, students and staff. Participating teachers in this project addressed three interrelated areas of their teaching that they identified as most challenging: (1) teaching diverse learners in the 21st century; (2) engaging students in their learning; and (3) managing and teaching students at once. Our work with these three topics is summarized here. A sampling of documents used in our workshops and a bibliography containing a theoretical framework for professional development and learning are offered as well. During our workshops, teacher-participants realized their powerful commitment to cura personalis, the individual student, as a part of their daily work

    Three Poems by Betsy M. Hughes

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    Preliminary development and testing of an open-path hydrocarbon sensor for oil and gas facility monitoring

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    2019 Summer.Includes bibliographical references.We developed an open-path laser absorption sensor for detection of unspeciated hydrocarbons for oil and gas production facility fence line monitoring. Such sensors can aid in maintaining air quality standards by quantifying greenhouse gas emissions and detecting emissions that cause adverse health effects. Our initial design employs a single-path detection system, though future implementations may use multiple paths for large-scale facility monitoring. The sensor uses a compact mid-infrared laser source in the spectral region of ~3.3 µm to measure absorption of several hydrocarbon species and is intended for open-paths of ~100 m to 1 km. Spectral simulations show that for typical conditions the hydrocarbons cause a transmission reduction of ~10% allowing for a robust measurement. The initial prototype system uses a helium-neon (He:Ne) laser at 3.391 µm for which signal contributions from methane and non-methane hydrocarbons are comparable. Closed-cell tests were performed with diluted methane (~150-250 ppm) to validate the transmission signals and showed good agreement with expected (calculated) values to within ~10%. The system employs a reference leg, with a 2nd detector (near the source), to normalize for laser power fluctuations. For improved signal-to-noise, particularly for detection of small concentrations and transmission changes, we employ phase-sensitive detection with a mechanical chopper and software based lock-in amplifier. This detection scheme, when employed in the field, allows measurement of transmission signals with stability <0.5% (based on coefficient of variation over 60 s). The portable field sensor system uses two refractive telescopes (2" diameter optics), a transmitter and receiver co-located on a mobile optical breadboard, and a reflector dictating the pathlength. We performed initial tests with pathlengths up to ~25 m (one way), though the design should allow paths in excess of 100 m. Methane was released for initial field tests at known flow rates near the center of the beam path. Transmission signals in agreement with expectations (given uncertainties in the wind and plume dispersion) were observed. The system should allow detection of leaks (emissions) for mass flows as low as ~0.1 g/s of methane (or equivalent optical signal from other species resulting in a 1% change in signal) for the case where the source is ~150 m from the beam path and under typical atmospheric conditions. Recommendations for future modifications are provided based on potential shortcomings identified by initial field testing. Initial field testing also proved that this technology could be a viable low-cost solution for hydrocarbon detection

    Impact Study of the Galt Personalized Learning Model

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    In 2012, the Galt Joint Union Elementary School District (GJUESD) in Galt, California was selected as one of 16 districts in the United States that received a federal Race to the Top-District grant to improve student learning through a districtwide initiative focused on personalized learning (PL) for students and educators. Located in California's San Joaquin Valley, Galt has a diverse population of approximately 3,900 students.To implement the four-year initiative, the district made profound, coordinated changes to district, school, classroom, and out-of-school policies and practices. The efforts coalesced as a unique and integrated strengths-based PL model designed to support every student's strengths, aspirations, and individual learning needs.PL, broadly defined, is a system of instructional practices that take into account individual students' needs and goals. This report describes:A PL model developed by GJUESDThe gradual implementation of the model over a 4-year periodThe results of an impact study focused on measuring its effectivenessThe study used longitudinal student achievement data from district students, along with data from a matched virtual comparison group — that is, a group created using a national database from a widely used assessment vendor — to measure the effect of the intervention on students in the areas of mathematics, reading, and language usage

    An Iowa Supplement to the Project WET Curriculum and Activity Guide [Credits]

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    An Iowa Supplement to the Project WET Curriculum and Activity Guide [Credits] is a K-12 curriculum supplement that was written as part of the Iowa Project WET program under the Iowa Academy of Sciencehttps://scholarworks.uni.edu/k12_supplements/1000/thumbnail.jp

    Evolutionary approaches to sexually transmitted infections

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87105/1/j.1749-6632.2011.06078.x.pd

    Perception of neighborhood crime and drugs Increases cardiometabolic risk in Chilean adolescents

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    PURPOSE: Studies report an association between neighborhood risk and both obesity and cardiometabolic risk factors (CMR) among adolescents. Here we describe the effect of perceived neighborhood risk on adiposity and CMR among Chilean adolescents. METHODS: Participants were 523 low- to middle-income Chilean adolescents. We assessed neighborhood risk in early adolescence, adiposity in childhood and in early and later adolescence, and blood pressure and fasting glucose in later adolescence. Neighborhood risk profiles were estimated using latent profile analysis (LPA) and based on reported perceptions of crime and drug sales/use. Using linear and logistic regression, we examined the effect of neighborhood risk on adiposity and CMR. RESULTS: Mean age in early and later adolescence was 14 and 17 years, respectively. Participants were 52% male, with a mean BMI z-score of .67, and 8% met criteria for metabolic syndrome. LPA identified two neighborhood profiles: 61% low risk and 39% high risk. In later adolescence, being in the high risk profile predicted a higher BMI z-score, waist-to-height ratio, and fat mass index (p < .05). Adolescents in the high risk profile had three times greater odds of meeting criteria for metabolic syndrome (OR = 3.1, 95% CI: 1.5, 5.8) compared with those in the low risk profile. CONCLUSIONS: Our findings suggest that there are physiological responses to living in a neighborhood perceived as "risky," which may contribute to obesity and CMR even in adolescence. For Chilean neighborhoods with high crime and drugs, targeted public health interventions and policies for youth could be beneficial.This research was funded by R01HL088530 (NIH-NHLBI, PI: Gahagan); R01HD33487 (NIH-NICHD, PIs: Lozoff and Gahagan); R01DA021181 (NIH-NIDA, PI: Delva). The first author acknowledges D. Eastern Kang Sim for his support. All authors would like to thank the study participants for their on-going commitment to the project. (R01HL088530 - NIH-NHLBI; R01HD33487 - NIH-NICHD; R01DA021181 - NIH-NIDA

    ETCHER: Investigation of Massive Multiplayer Online Role-Playing Games

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    The improvement of IPv6 has studied IPv6, and current trends suggest that the understanding of Moore's Law will soon emerge. Given the trends in cacheable symmetries, security experts predictably note the refinement of randomized algorithms, which em- bodies the typical principles of machine learning. ETCHER, our new framework for knowledge-based algorithms, is the solution to all of these problems

    Educational Progress of Basic Educational Opportunity Grant Recipients Compared to Non-Recipients

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