How Astronomers Use Spectra to Learn About the Sun and Other Stars

This booklet allows students to learn how astronomers get information about the Sun and other stars. Educational levels: High school, Undergraduate lower division

An investigation of biases in Patient Safety Indicator score distribution among hospital cohorts

Denman Research Forum- 2nd Place, Health Professions-ClinicalThe Centers for Medicare and Medicaid Services (CMS) have implemented a hospital reimbursement system that incentivizes payment proportional to the quality of care delivered and performance on certain metrics. One such metric is the Agency for Healthcare Research and Quality’s Patient Safety Indicator 90 (PSI-90). It is composed of eight individual indicators designed to flag adverse patient events that are potentially preventable, such as post-operative wound dehiscence and accidental lacerations. CMS publicly reports four of these individual PSI scores (6, 12, 14 and 15) in addition to the composite PSI-90. Previous studies question the PSIs’ validity beyond screening purposes and furthermore question the underlying administrative data’s ability to accurately and reliably flag such events. This study looks to analyze biases in PSI score distribution for hospitals depending on teaching status, differences in patient demographics and lastly, interactions between teaching status and patient demographic factors and their ability to account for differences in PSI rates. Significant differences were found between teaching and non-teaching hospitals for PSIs 6, 12, 15 and 90 (p<0.01). Inpatient volume and patient severity (p<0.01) were found to be significantly different between teaching status cohorts. Lastly, significant differences in PSI scores were found between patient severity quartiles for PSI 6, 15 and 90 (p<0.05) and between socio-economic quartiles for PSI 6, 12, 15 and 90 (p<0.05); but interaction between patient severity and teaching status was only significant for PSI 90 (p<0.05) and between socioeconomic and teaching statuses for PSI 6 (p<0.05). These results indicate current PSI score distributions may be biased against teaching hospitals for 4 out of 5 PSI measures. Further studies will involve assessing the adequacy of risk-adjustment methodology for PSI metrics. Until then, use of PSI metrics to determine federal reimbursement can lead to bias against teaching hospitals.A three-year embargo was granted for this item.Academic Major: Health Information Management and System

A Study of Media Portrayal of Schizophrenics to Understand How Stigma Associated with Schizophrenia may be Reversed

The news media are one of the most influential sources of information regarding mental illness. Media coverage on schizophrenia, one of the most stigmatized mental illnesses, tends to be negative, focusing on high risks of violence, failure, and unpredictability. Such perceptions may cause a detrimental impact on the mentally ill and cause them to internalize a stigmatizing stereotype and hinder the public’s understanding of mental illness. I studied how media portrayal in newspaper coverage of schizophrenics has evolved to discover how nonfiction media representation has affected people’s perceptions and attitudes towards schizophrenics and to propose an implementable solution to reduce stigma by utilizing the media. I explored scholarly sources that analyzed the changes in reporting of schizophrenia in high-circulation newspapers in different countries and how renaming schizophrenia in Japan reduced the associated stigma. I also investigated successful solutions that have been implemented in other countries that have helped decease the stigma associated with schizophrenia. Currently in other countries, destigmatization efforts are mostly directed at providing more accurate information. An appeal for the government to provide opportunities to discuss and reflect on media contents may also be successful in decreasing the association between mental illness and violent crime. It is imperative that the US creates and implement solutions that may decrease mental health stigma and also discover other possible solutions. This will not only help the predicaments of those suffering from mental illness, but may also educate the public on such mental health problems as to prevent further misinformation.https://scholarscompass.vcu.edu/uresposters/1256/thumbnail.jp

Empower(ed) Families: Supportive Treatment for Caregiver Burnout for Parents of Adolescents with Eating Disorders

Graduate Theoretical Proposa

CAFS in action

For those few readers who do not know, CAFS is a system developed by ICL to search through data at speeds of several million characters per second. Its full name is Content Addressable File Store Information Search Processor, CAFS-ISP or CAFS for short. It is an intelligent hardware-based searching engine, currently available with both ICL's 2966 family of computers and the recently announced Series 39, operating within the VME environment. It uses content addressing techniques to perform fast searches of data or text stored on discs: almost all fields are equally accessible as search keys. Software in the mainframe generates a search task; the CAFS hardware performs the search, and returns the hit records to the mainframe. Because special hardware is used, the searching process is very much more efficient than searching performed by any software method. Various software interfaces are available which allow CAFS to be used in many different situations. CAFS can be used with existing systems without significant change. It can be used to make online enquiries of mainframe files or databases or directly from user written high level language programs. These interfaces are outlined in the body of the report

Investigating ultrasound–light interaction in scattering media

Significance: Ultrasound-assisted optical imaging techniques, such as ultrasound-modulated optical tomography, allow for imaging deep inside scattering media. In these modalities, a fraction of the photons passing through the ultrasound beam is modulated. The efficiency by which the photons are converted is typically referred to as the ultrasound modulation’s “tagging efficiency.” Interestingly, this efficiency has been defined in varied and discrepant fashion throughout the scientific literature. Aim: The aim of this study is the ultrasound tagging efficiency in a manner consistent with its definition and experimentally verify the contributive (or noncontributive) relationship between the mechanisms involved in the ultrasound optical modulation process. Approach: We adopt a general description of the tagging efficiency as the fraction of photons traversing an ultrasound beam that is frequency shifted (inclusion of all frequency-shifted components). We then systematically studied the impact of ultrasound pressure and frequency on the tagging efficiency through a balanced detection measurement system that measured the power of each order of the ultrasound tagged light, as well as the power of the unmodulated light component. Results: Through our experiments, we showed that the tagging efficiency can reach 70% in a scattering phantom with a scattering anisotropy of 0.9 and a scattering coefficient of 4  mm⁻¹ for a 1-MHz ultrasound with a relatively low (and biomedically acceptable) peak pressure of 0.47 MPa. Furthermore, we experimentally confirmed that the two ultrasound-induced light modulation mechanisms, particle displacement and refractive index change, act in opposition to each other. Conclusion: Tagging efficiency was quantified via simulation and experiments. These findings reveal avenues of investigation that may help improve ultrasound-assisted optical imaging techniques

Creating the Virtual Seismologist: developments in ground motion characterization and seismic early warning

The Virtual Seismologist method for earthquake early warning uses a Bayesian approach to find the most probable magnitude and location estimates given the incoming ground motions envelopes from a rupturing earthquake. Ground motion ratios and ground motion envelope attenuation relationships are used to estimate magnitude and epicentral location as early as 3 seconds after the initial P wave detection. The use of prior information distinguishes this method from other proposed methods for seismic early warning. The state of health of the seismic network, previously observed seismicity, fault locations, and the Gutenberg-Richter relationship are the types of prior information useful in resolving trade-offs in the initial source estimates which are unresolved by the limited data. Short-term earthquake forecasts are ideal priors for seismic early warning. Having a high density of stations with real-time telemetry reduces the complexity involved in finding the most probable source estimates and communicating these estimates to early warning subscribers. The benefits of prior information are most evident for regions with low station density. Most early warning studies are focused exclusively on either the source estimation problem, or how subscribers use the warning information. The inclusion of prior information ultimately requires a level of coordination and communication between the network broadcasting the early warning information and the subscribers that is not consistent with this divide. The need for a more integrated approach to seismic early warning which considers the source estimation and user response as interacting and interrelated parts of a single problem is discussed. A parameterization that decomposes observed ground motion envelopes into Pwave, S-wave, and ambient noise envelopes is developed and applied to a large suite of observed ground motion envelopes recorded within 200 km of 2 ! M ! 7.3 Southern California earthquakes. Separate attenuation relationships are developed to describe vi the magnitude, distance, and site dependence of various channels of P- and S-wave envelopes. The P-wave relationships allow the early warning source estimates to be obtained from observed P-wave amplitudes. Aside from early warning applications, these envelope attenuation relationships are used to investigate the average properties of ground motions recorded by the Southern California Seismic Network. Stationspecific amplification factors for 150 Southern California Seismic Network stations were obtained for horizontal and vertical acceleration, velocity, and displacement amplitudes, and are included (Excel format) as external multimedia objects

Queer Aswang Transmedia: Folklore as Camp

In recent years, the aswang—a supernatural creature of Philippine folklore that is often associated with female monstrosity and patriarchal misogyny—is being flamboyantly queered across a range of media. The aswang is a centuries-old transmedial, transgeneric figure whose monstrosity has been interpellated by gender-essentialist agendas while nonetheless epitomizing disruptive gender instabilities. In the handful of texts that comprise queer aswang transmedia—a 2011 Filipino novel (Ricky Lee’s Si Amapola sa 65 na Kabanata [Amapola in 65 Chapters]), mainstream film (Mga Bata ng Lagim [Children of Terror], dir. Mar S. Torres, 1964), and amateur digital video (Amabilis 2, 2011)—the aswang, an iconic female monster, is being destabilized and re-imagined. Gay men (or more accurately, bakla subjects) are occupying the place formerly reserved for monstrous women. This queering of aswang transmedia is a forceful, funny, yet undeniably risky reapproriation lodged in language (“swardspeak”) and a kind of pinoy [Filipino] camp style. This essay attempts to theorize a distinctly Filipino camp sensibility in relation to queer time. It wrestles with queer aswang transmedia’s implications for both temporality (since anachronism underpins the cultural figures of both bakla and aswang) and visibility (queer scholars argue that the bakla, stigmatized as effeminate and lower class, is increasingly the object of forcible bourgeois erasure in the face of the urban gay scene’s aspirations toward an imagined gay globality)