Rapid Technique for Liquid Scintillation Counting of Carbon-14-labelled Barium Carbonate

Rapid technique for liquid scintillation counting of carbon-14-labelled barium carbonat

Web Annotation in English Language Arts: Online Dialogue as a Platform to Support Student Comprehension of Texts

This study explores how web annotation—through a process of online reading, writing in the margins, and replying to others’ comments—influences student dialogue in ways that research suggests are associated with improved comprehension. Viewing data through a dialogic lens, and using a qualitative, multiple case study design to observe two high school English Language Arts teachers and their students, this inquiry was guided by the following research questions: (a) How do English Language Arts teachers use web annotation to support student comprehension of texts? (b) To what extent, if any, does web annotation appear to support student comprehension of texts? and (c) How do English Language Arts teachers and students perceive the usefulness of web annotation in supporting student comprehension of texts? Both teachers in this study implemented web annotation practices with hopes of getting their students to engage in meaningful dialogue about texts, and that goal was evident in how they structured web annotation activities so students could drive the discussion and how they both tried to build upon students’ online discussions during subsequent face-to-face (F2F) class discussions. Despite such dialogic intentions, analysis of web annotations based on indices associated with high-level thinking and textual understanding revealed that, generally speaking, web annotation discussions did not exhibit rich dialogue. Additionally, there was a widespread lack of textual connections—annotations that connected a text to other texts, to the reader’s emotions or personal experiences, or to experiences the students shared as a class—evident in students’ annotations. However, discussions in which the teacher gave specific requirements for the number of annotations and replies and provided specific writing prompts tended to result in a higher prevalence of the indicators related to increased textual understanding. Although web annotation did not generally result in a substantial increase in these measures, findings revealed that students found great value in seeing and being able to interact with their peers’ thoughts about texts and that teachers saw enough benefits for student learning that they planned to continue its use going forward. Recommendations invite teachers to explore ways to establish a dialogic culture in their classroom and to make intentional decisions for inclusion of web annotation—or any other digital tool—based on sound pedagogy and on the learning goals they set with their students; approaching technology implementation in this way places teachers and pedagogy at the center of the process, helping them to leverage the affordances digital technologies provide. Recommendations for future research include focused examinations of (a) the thinking and composing processes students undergo as they annotate on the web; (b) the impact web annotations have on specific learning outcomes, potentially using comprehensive reading comprehension assessments; and (c) methods for web annotation use in elementary, higher education, or adult learning settings

The Effects of a Brief Mindfulness-Based Meditation Intervention on Chronic Pain

As the number of individuals suffering with chronic pain escalates, management is shifting from pain specialists to primary care providers. Nurse practitioners are becoming increasingly responsible for the management of this complex patient population. Analgesics, primarily opioids, have been the standard of chronic pain management with a resulting national crisis related to overuse, improper use, and illegal use of these substances. Mindfulness-based meditation has gained increasing interest and acceptance by both the individuals suffering with chronic pain and the providers managing those who suffer, however, limited investigation is available related to brief interventions provided at point-of-care. This Capstone Project evaluated the effect of a brief mindfulness-based meditation intervention implemented at point-of-care to patients diagnosed with chronic pain over a four week time span measuring pain level, mindfulness self-efficacy, and quality of life. Findings demonstrated that an individual’s level of mindfulness self-efficacy positively relates to quality of life measures after use of a brief mindfulness-based meditation intervention. Additionally, individuals diagnosed with chronic pain less than five years demonstrated an improved response in mindfulness self-efficacy and quality of life measures after implementation of a brief mindfulness-based meditation intervention

Radiative hydrodynamic modelling and observations of the X-class solar flare on 2011 March 9

We investigated the response of the solar atmosphere to non-thermal electron beam heating using the radiative transfer and hydrodynamics modelling code RADYN. The temporal evolution of the parameters that describe the non-thermal electron energy distribution were derived from hard X-ray observations of a particular flare, and we compared the modelled and observed parameters. The evolution of the non-thermal electron beam parameters during the X1.5 solar flare on 2011 March 9 were obtained from analysis of RHESSI X-ray spectra. The RADYN flare model was allowed to evolve for 110 seconds, after which the electron beam heating was ended, and was then allowed to continue evolving for a further 300s. The modelled flare parameters were compared to the observed parameters determined from extreme-ultraviolet spectroscopy. The model produced a hotter and denser flare loop than that observed and also cooled more rapidly, suggesting that additional energy input in the decay phase of the flare is required. In the explosive evaporation phase a region of high-density cool material propagated upward through the corona. This material underwent a rapid increase in temperature as it was unable to radiate away all of the energy deposited across it by the non-thermal electron beam and via thermal conduction. A narrow and high-density ($n_{e} \le 10^{15}$ cm$^{-3}$) region at the base of the flare transition region was the source of optical line emission in the model atmosphere. The collision-stopping depth of electrons was calculated throughout the evolution of the flare, and it was found that the compression of the lower atmosphere may permit electrons to penetrate farther into a flaring atmosphere compared to a quiet Sun atmosphere.Comment: 12 pages, 12 figure

Quick actuating closure and handling system

A quick activating closure and handling system, which utilizes conical sections for locking, was developed to allow quick access to the combustor internal components of the 8 ft High Temperature Tunnel. These critical components include the existing methane spraybar, a transpiration cooled nozzle and the new liquid oxygen (LOX) injection system housed within the combustor. A substantial cost savings will be realized once the mechanism is installed since it will substantially reduce the access time and increase the time available for conducting wind tunnel tests. A need exists for more frequent inspections when the wind tunnel operates at the more severe conditions generated by using LOX in the combustor. A loads analysis and a structural (finite element) analysis were conducted to verify that the new closure system is compatible with the existing pressure shell. In addition, strain gages were placed on the pressure vessel to verify how the pressure shell reacts to transient pressure loads. A scale model of the new closure system was built to verify the operation of the conical sections in the locking mechanisms

Keeping up with the Times: Improving the Modern Counselor through Professional Identity Development, Technological Policy, and Positive Risk Taking

Awareness of ‘best practices’ and ‘critical issues’ assists counselors-in-training as they attempt to navigate the expectations of their programs and prepare for their future careers. This article identified the development of a professional identity as a significant goal for counselors-in-training and a curriculum responsibility for counselor educators. The authors also identified two critical issues that counselors-in-training and working professionals face currently. The first critical issue addressed is how technologies fit into counseling practices and their impact on the counseling process. The second critical issue is the potential impact of counselor-client willingness to take a risk with therapeutic options. New and seasoned counselors alike will be met with challenges as they develop and grow in their professional identity. Counselors can support their own professional development by understanding ‘critical issues’ that have the potential to impact professional identity as well as gleaning the knowledge of ‘best practices’ for ethical decision-making

Social annotation and dialogic teaching and learning in English language arts

This research study explores the role of social annotation in supporting dialogic teaching in secondary English language arts. Grounded in Bakhtin\u27s dialogism and building upon research into online discussion, this study describes how a high school English teacher and her students used a digital annotation tool to read and talk about texts. Analyzing student annotations based on discourse features associated with comprehension and high-level thinking, the study examines the extent to which social annotation supports quality dialogue. Findings highlight the need for open-ended prompts and teacher scaffolding of online discussions, and authors suggest that dialogue enhances comprehension of texts when students go beyond reporting on others\u27 thoughts and instead share their own ideas, connections, and questions about the text

Incentives to Encourage Landowners’ Management for New England Cottontail Rabbit Habitat in New York’s Eastern Hudson Valley

Click on the PDF for the full report. Visit the HDRU website for a complete listing of HDRU publications at: http://hdru.dnr.cornell.edu

Understanding Landowner and Municipal Official Perceptions of Water Quality in a Local Watershed

Click on the PDF for the full report. Visit the HDRU website for a complete listing of HDRU publications at: http://hdru.dnr.cornell.edu