731 research outputs found

    Ultra-Sensitive Silicon Sensor, Long-Wave Infrared Microantenna

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    Hybrid microantennas and improved sensor structures incorporating hybrid microantenna embodiments

    Development of a COTS-Based Propulsion System Controller for NASA’s Lunar Flashlight CubeSat Mission

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    The Lunar Flashlight mission is designed to send a 6U CubeSat into lunar orbit with the aim of finding water-ice deposits on the lunar south pole. The Glenn Lightsey Research Group (GLRG) within Georgia Tech’s Space Systems Design Laboratory (SSDL) is developing a low-cost propulsion system controller for this satellite using commercial-off-the-shelf (COTS) parts, with an emphasis on overcoming the harsh environment of lunar orbit through careful architecture and testing. This paper provides in-depth coverage of the Lunar Flashlight Propulsion System (LFPS) controller development and testing processes, showing how an embedded system based on COTS parts can be designed for the intense environment of space. From the high-level requirements architecture to the selection of specific hardware components and software design choices, followed by rigorous environmental testing of the design, radiation and other environmental hardening can be achieved with high confidence

    Consistent annotation of gene expression arrays

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    <p>Abstract</p> <p>Background</p> <p>Gene expression arrays are valuable and widely used tools for biomedical research. Today's commercial arrays attempt to measure the expression level of all of the genes in the genome. Effectively translating the results from the microarray into a biological interpretation requires an accurate mapping between the probesets on the array and the genes that they are targeting. Although major array manufacturers provide annotations of their gene expression arrays, the methods used by various manufacturers are different and the annotations are difficult to keep up to date in the rapidly changing world of biological sequence databases.</p> <p>Results</p> <p>We have created a consistent microarray annotation protocol applicable to all of the major array manufacturers. We constantly keep our annotations updated with the latest Ensembl Gene predictions, and thus cross-referenced with a large number of external biomedical sequence database identifiers. We show that these annotations are accurate and address in detail reasons for the minority of probesets that cannot be annotated. Annotations are publicly accessible through the Ensembl Genome Browser and programmatically through the Ensembl Application Programming Interface. They are also seamlessly integrated into the BioMart data-mining tool and the biomaRt package of BioConductor.</p> <p>Conclusions</p> <p>Consistent, accurate and updated gene expression array annotations remain critical for biological research. Our annotations facilitate accurate biological interpretation of gene expression profiles.</p

    An Annotated Bibliography of Financial Therapy Research: 2010 to 2018

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    The purpose of this paper is to expand upon Mentzer, Britt, Samuelson, and Herrera’s (2010) annotated bibliography of research conducted in the field of financial therapy prior to 2010 and provide readers with a current overview of financial therapy research published since that time. Annotated bibliographies are categorized by topics and future research in each area is suggested. In addition, two tables were developed to provide readers a snapshot of the current landscape of financial therapy. The first table provides a list of journals of published articles featuring financial therapy or related topics. The second table provides an overview of types of research, population studies, key topics, as well as highlighting whether theory and financial therapy are overtly referred to within the article

    HAM simulation of the drying out capacity of water ingress in wooden constructions

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    Due to more stringent energy codes, the advantages of wood-frame construction –slender walls in respect to the thermal resistance – have been picked up by the construction market in Belgium. This construction type is not endogenous, and the configuration of building components is often copied from Scandinavian building practice. However, climatic differences may induce additional risks for premature failure due to e.g. water ingress or interstitial condensation. Currently, it remains unclear how much water can be tolerated in wood-frame construction without causing excessive moisture contents. In this paper, the impact of water ingress is evaluated with a 2D hygrothermal model. Static experiments were conducted on the water penetration at window-wall interfaces to relate the water ingress to both wind pressure and the airtightness of the component. A method is proposed to relate these infiltration rates to measured wind pressures to allow for an assessment of the components by means of hygrothermal simulations under a realistic climate. HAM simulation taking into account the expected water ingress loads offers a rapid and realistic method of risk assessment for wooden constructions. Penetrated water was found to be a dominating parameter for the wood moisture content in cases where the initial moisture content and vapour diffusion resistance of the components was altered

    Hotline Number to Reach and Offer Agricultural Information to Plain Anabaptists during the COVID-19 Workplace Closures

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    The Penn State Extension Animal Systems Team developed a toll-free hotline phone number to convey short educational messages to maintain contact and outreach to Pennsylvania’s animal producing Amish, Mennonite, and other plain Anabaptist populations. During the COVID-19 pandemic, Penn State Extension’s programming went largely online via webinars, online courses, and emails. This change in programming excluded a large sector of Pennsylvania farmers who do not use or have access to the internet and, as such, were liable to miss important best management practice reviews and timely updates in animal agriculture. The Animal Systems Hotline offered callers the choice to listen to pre-recorded messages from dairy, equine, livestock, and poultry Extensions. Across the Animal Systems Team, during a span of approximately 22 weeks, a total of 111 messages were uploaded to the Hotline, with a total of 2,201 people calling in to the Hotline. Topics varied across the Extensions from the basics of animal husbandry and health to pasture and nutrition management. Since the development of the Hotline, Extension educators have received calls from plain producers requesting more information about the topics covered on the Hotline messages. While there were challenges with the system used for the Hotline and data collection, the broad reach and numerous callers indicates that the Hotline was a successful method of connecting with plain audiences. [Abstract by authors.

    Resource Needs and Disparities Among University Members During COVID-19

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    Prior studies suggest that campus closures due to COVID-19 adversely impacted the well-being of college and university members. However, no research has examined the resources needed to assist university members as they return to pre-pandemic activities. The current study examined: (1) the resources university members wanted to assist their transition back to in-person activities, (2) their access to these resources, and (3) differences in access among various demographic groups, including those from minoritized backgrounds. Participants completed a novel Wants and Access Questionnaire to gauge their desires for and access to various campus and community resources. The study included 471 university members: 219 undergraduates (Age: Mage=22.78, SD=6.35), 91 graduate students (Age: Mage=33.77, SD =9.75), and 161 faculty/staff members (Age: Mage=49.53, SD =12.19). The study found that most undergraduates reported wanting access to financial support, followed by interpersonal support (friends and partners), and mental health support. However, 30-60% of students reported a lack of access to these desired resources. Graduate students reported wanting access to interpersonal support (friends, partners, family), followed by financial support, and mental health. However, 24-50% of the graduate students reported limited access to these resources. Most faculty/staff members reported wanting access to interpersonal support (friends, partners, family), and medical professionals. Only about 20-30% of the faculty/staff reported limited access to these resources. Faculty/staff reported the need for mental health resources in their write-in responses of the study. Additionally, in several instances, minoritized groups (LGBQ+ and people of color) reported lower access to resources. Findings indicate that university members (especially undergraduates, LGBQ+ and people of color) reported lack of access to desired resources to support them. The current study points to disparities in resource categories that may guide college/university priorities.https://digitalcommons.odu.edu/gradposters2023_sciences/1012/thumbnail.jp
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