12,747 research outputs found
Interactively using Semantic Web knowledge: Creating scalable abstractions with FacetOntology
No full textThe amount of knowledge accessible on the Semantic Web is growing, and there is a need for a scalable solution to facilitate exploring that data. Currently approaches to exploring Semantic Web data either focus on exploring resources individually, following links during exploration, and making little use of collated data, or take the approach of collating and aligning multiple sources into one store for one purpose, and hand-crafting a specific browsing interface onto it. We present an approach that provides a scalable browsing interface, which can browse knowledge from the Semantic Web at will. Our approach creates abstractions of knowledge, collated into facets, which are described using FacetOntology. FacetOntology facilitates describing facets from RDF data, suitable for use in creating datasets for faceted browsing
Feshbach spectroscopy of an ultracold Rb-Cs mixture
No full textThis thesis reports the observation of interspecies Feshbach resonances in an ultracold mixture of Rb and Cs atoms. A versatile combined magnetic and optical potential has been designed and constructed which is capable of bringing both and to degeneracy, and reaching high phase-space density in . High phase-space density mixtures are the first step required in the production of ultracold polar molecules, the topic of much current research.
The apparatus capitalises on the efficient capture of atoms by a magnetic trap from a magneto-optical trap, and the efficient sympathetic cooling of Cs by Rb therein. Upon transfer to the crossed optical dipole trap condensates in excess of atoms and approximately atoms are produced after direct evaporation and gravito-magnetic tilting of the potential. The observation of six interspecies - Feshbach resonances are reported, three of which had only been predicted theoretically, allowing testing and development of the theoretical model. Furthermore, the extrapolation of this model has predicted numerous Feshbach resonances between and , none of which have been experimentally observed prior to this work. The versatile nature of this apparatus is discussed, including the application of the current system to cooling of . Initial experiments observed seven interspecies resonances, including a broad s-wave resonance at a magnetic field of G which is in excellent agreement with the theoretical prediction. Further work has revealed that fourteen Feshbach resonances exist in the 0-700 G magnetic field range between and atoms in the and states, respectively. Several of these resonances would be ideal for magneto-association of RbCs molecules, prior to transfer to the rovibrational ground-state
NYC Community Schools and Student Crime Incidents
No full textA community school (CS) is a collaboration between school staff, families, youth, and the community to raise student educational outcomes. These schools increase access to resources such as physical and mental health services, guided extracurricular activities, leadership opportunities, parental and community engagement, and mentorship. Using data from New York City (NYC) and a difference-in-differences methodology, I find that CS decreases total crimes per 1000 students. This effect seems to be driven primarily by a decrease in other crimes and disciplinary infractions as well as concentrated in elementary schools
PiLa-CS Professional Learning Community - Workshop 2 Resources
No full textDuring the Summer of 2021 and 2022, the Participating in Literacies and Computer Science (PiLa-CS) Research Practice Partnership convened and supported a community of practice to learn more about how to enable better CS teaching for emergent bilinguals. These are materials from Workshop 2 of the PLC.Sponsored by the National Science Foundation under NSF grant CNS-1738645 and DRL-1837446. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation
Vicarious resilience : psychotherapists\u27 experiences working with survivors of trauma
No full textThis study was carried out to discover potential relationships between vicarious resilience (VR), vicarious trauma (VT), secondary traumatic stress (STS), compassion fatigue (CF), burnout (BO), empathy, and compassion satisfaction (CS), as well as to further explore how psychotherapists experience the impacts, both positive and negative, of working with severe trauma. A mixed-methods survey design was used to obtain 77 psychotherapists’ scores on four previously developed measures for VR, VT, empathy, and professional quality of life. Correlation analyses were run to define the relationship between VR and related constructs. Exploratory open-ended questions sought to capture the lived experiences of psychotherapists who work with trauma survivors. Major findings of the study included: correlations between VR and CS, correlations between the capacity to remain present and VT, and correlations between empathy and facets of VR. Findings also suggest a relationship between appreciation for clients’ spirituality and VR
An exploration of the relationships between self compassion and burnout : secondary traumatic stress and compassion satisfaction among providers who work with children and families who have experienced trauma
No full textThe field of social work education has witnessed a soaring need to help providers cope with the negative emotional impact of working with clients who have experienced trauma. This study explored the association between self compassion and the experience of burn out (BO), secondary traumatic stress (STS) and compassion satisfaction (CS) among mental health providers who specifically work with children and youth who have experienced trauma. This quantitative study employed a survey in addition to two open-ended questions in a sample of 60 participants using a convenience sampling process.
The findings suggest that self compassion serves as a strongly correlated concept when examining providers’ level of BO, STS and CS. Specifically, the more self compassion one is, the less BO and STS one experiences in one’s work with children and families who have experienced trauma. In order to minimize BO and STS and maximize CS, programs and individuals should stress the importance of self compassion by strengthening the six sub constructs of self compassion with the understanding of its varied presentations among differences in gender, income level, ethnic group and working hours
Using the VAST Challenge in Undergraduate CS Research
No full textThe Visual Analytics Science and Technology (VAST) Challenge is a yearly competition designed to push forward visual analytics research through synthetic, yet realistic analytic tasks. In this paper, we discuss the challenges and the successes we have experienced incorporating the VAST Challenge and associated datasets into undergraduate research programs at two liberal arts colleges. We advocate for increased undergraduate participation in this and similar competitions, arguing they afford unique opportunities for positive development in early researchers
Translanguaging Pedagogy in CS Ed
No full textEpisode 3: Translanguaging pedagogy in CS Education
This video looks at how multilingual students already use translanguaging in their computer science classes and discusses how CS educators can further support them with translanguaging pedagogy, a framework that prompts teachers to consider their stance, design, and shifts.
Featuring team members from Participating in Literacies and Computer Science (PiLa-CS), https://www.pila-cs.orgEpisode 3: Translanguaging pedagogy in CS Education
This video looks at how multilingual students already use translanguaging in their computer science classes and discusses how CS educators can further support them with translanguaging pedagogy, a framework that prompts teachers to consider their stance, design, and shifts.
Featuring team members from Participating in Literacies and Computer Science (PiLa-CS), https://www.pila-cs.orgSponsored by the National Science Foundation under NSF grant CNS-1738645 and DRL-1837446. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation
Ethylene carbonate ethoxylation on aromatic nitrogen nucleophiles
No full textAlthough ethoxylation reactions are commonly used, currently used reagents are hazardous, toxic, and/or explosive. Ethylene carbonate has been put forth as an inexpensive, nontoxic, and “green” potential ethoxylation reagent. Herein we study a base-catalyzed ethyl alcohol transfer from ethylene carbonate to indole. The 19F NMR method was used to quantify the product formation yields. Ethylene carbonate is an effective ethoxylation reagent for indoles. An excess use of ethylene carbonate is needed for the reaction to complete in a reasonable amount of time. There are no significant differences between the use of catalytic amount of different bases/nucleophiles, thus catalytic amounts of Cs 2CO3 and DABCO are further explored. As time increases, more side product forms. When DABCO is used as the catalyst, DMSO is recommended as the solvent for the reaction. When Cs 2CO3 is used as the catalyst, DMF is recommended as the solvent for the reaction. To date, our best reaction condition allows us to collect 67% of desired product. More experiments are needed to explore the optimal reaction condition so that an effective base-catalyzed ethylene carbonate ethoxylation on indole nucleophile can be developed, and eventually a general base-catalyzed ethylene carbonate ethoxylation reaction can be applied on various aromatic nitrogen nucleophile substrates
PiLa-CS Professional Learning Community - Design Journal Template
No full textDuring the Summer of 2021 and 2022, the Participating in Literacies and Computer Science (PiLa-CS) Research Practice Partnership convened and supported a community of practice to learn more about how to enable better CS teaching for emergent bilinguals. These are materials from from the PLC for a Design Journal to act as a planing template for teachers.Sponsored by the National Science Foundation under NSF grant CNS-1738645 and DRL-1837446. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation
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