Salnave Elementary playground during COVID-19

I wanted to share this image to capture what now feels like a forgotten moment in the pandemic -- for the first few days of statewide lockdown, I had taken my daughter to this playground at her elementary school in Cheney, since playing outside was about the only safe thing we knew to do. But then an order was issued to close playgrounds out of fear of the spread of covid-19, so this is a picture taken on March 23 -- you can see not only the big sign, but the faint yellow caution tape that\u27s wrapped around all of the playground equipment. There was something very chilling about it -- at the time it seemed ominous but no one was sure yet how bad things would get. And now, with the playgrounds having been open for many months (though we wear a mask and hand sanitize, etc.), this picture feels more like a dream I had than like a memory.https://dc.ewu.edu/covid/1000/thumbnail.jp

A study of the impact of the Ceramic Materials Research program at the University of Washington Final report, 15 Jun. 1968 - 15 Sep. 1969

Impact of Ceramic Materials Research Program at University of Washingto

The Relationship Between Student Demographics and Student Engagement with Online Library Instruction Modules

Objective – To investigate whether there are any demographic trends affecting student engagement with online library instruction which might have implications for practice, the authors designed a case study to examine the relationship between student demographic characteristics and engagement with online library instruction modules in English 102 courses at a single university. Methods – The authors recruited 181 students from English 102 (ENG 102), a research-based composition course, to participate in the study. ENG 102 instructors asked all participants to complete an online library instruction module embedded in the university’s course management system, either before in-person library instruction or in lieu of face-to-face library instruction. No external incentive was provided for online module completion. The research team measured levels of student engagement by recording the amount of time students spent on each page of the online module. In collaboration with the Office of Institutional Research, the authors then pulled demographic data on each participant using the university’s student information system. Pearson chi-square tests were performed to determine whether there were any notable associations between levels of student engagement and student age, grade point average, gender, and race/ethnicity. Results – Observable trends tied age and higher grade point average to higher levels of engagement with online instruction. There was additionally a slight trend linking female participants to higher levels of engagement than their male peers. In the category of race/ethnicity, the two largest subgroups, Hispanic and Caucasian students, exhibited similar levels of engagement. Conclusions – The authors conclude that there may be demographic implications for practice in designing online library instruction programs, especially when considering student age and academic performance indicators. They also conclude that, owing to this case study’s limited sample size, further study is warranted to investigate these conclusions, and to further examine the possible impact of gender and race/ethnicity on engagement with online library instruction modules

Sharing Pride Through Curriculum Materials Collections: The Evolution of LGBTQIA+ Representation in Picture Books

Understanding the changing landscape of LGBTQIA+ representation and its discoverability in popular collection development resources prepares curriculum materials librarians to develop inclusive collections and to support and advocate for the needs of preservice educators and the diverse audiences they serve. This paper maps how LGBTQIA+ representation in children’s picture books has evolved from 2008 to the present and to determine the scope of LGBTQIA+ visibility in professional book reviews. We did this by examining two subsamples from different four-year periods: 2008-2012 and 2018-2022. Our research found that recently published picture books with LGBTQIA+ representation have made substantial progress in depicting a wide range of gender identities and sexual orientations and introducing young readers to diverse stories about the LGBTQIA+ community. Additionally, the increased use of queer terminology in professional reviews has made LGBTQIA+ picture books more visible, although there are still limitations in representation in professional reviews. However, despite these positive findings, challenges still remain in the inadequate representation of some LGBTQIA+ identitie

Rf Voltage Modulation At Discrete Frequencies With applications To Crystal channeling Extraction

RF voltage modulation at a finite number of discrete frequencies is described in a Hamiltonian resonance framework. The theory is applied to the problem of parasitic extraction of a fixed target beam from a high energy proton collider, using a bent crystal as a thin ``septum`` within an effective width of about one micron. Three modes of employment of discrete resonances are proposed.First, a single relatively strong static ``drive`` resonance may be used to excite a test proton so that it will penetrate deeply into the channeling crystal. Second, a moderately strong ``feed`` resonance with a ramped modulation tune may be used to adiabatically trap protons near the edge of the beam core, and transport them to the drive resonance. Third, several weak resonances may be overlapped to create a chaotic amplitude band, either to transport protons to the drive resonance, or to provide a ``pulse stretching`` buffer between a feed resonance and the drive resonance. Extraction efficiency is semi- quantitatively described in terms of characteristic ``penetration,`` ``depletion,`` and ``repetition`` times. simulations are used to quantitatively confirm the fundamental results of the theory, and to show that a prototypical extraction scheme using all three modes promises good extraction performance

Probing Gauge String Formation in a Superconducting Phase Transition

Superconductors are the only experimentally accessible systems with spontaneously broken gauge symmetries which support topologically nontrivial defects, namely string defects. We propose two experiments whose aim is the observation of the dense network of these strings thought to arise, via the Kibble mechanism, in the course of a spontaneous symmetry breaking phase transition. We suggest ways to estimate the order of magnitude of the density of flux tubes produced in the phase transition. This may provide an experimental check for the theories of the production of topological defects in a spontaneously broken gauge theory, such as those employed in the context of the early Universe.Comment: 16 pages (Latex), 4 figures included, change in title, some minor changes, published versio

Topological String Defect Formation During the Chiral Phase Transition

We extend and generalize the seminal work of Brandenberger, Huang and Zhang on the formation of strings during chiral phase transitions(berger) and discuss the formation of abelian and non-abelian topological strings during such transitions in the early Universe and in the high energy heavy-ion collisions. Chiral symmetry as well as deconfinement are restored in the core of these defects. Formation of a dense network of string defects is likely to play an important role in the dynamics following the chiral phase transition. We speculate that such a network can give rise to non-azimuthal distribution of transverse energy in heavy-ion collisions.Comment: 10 pages, 4 figures, minor correction