Liquid oil painting: Free and forced convection in an enclosure with mechanical and thermal forcing

A fluid dynamics video is linked to this article, which have been submitted to the Gallery of Fluid Motion as part of the 65th American Physical Society meeting of the Division of Fluid Dynamics, held in San Diego, California, USA, over 17-20 November 2012. The video serves to visualize flows generated in a rectangular enclosure that are subjected to both mechanical and thermal forcing through a common horizontal boundary. This system exhibits features consistent with either horizontal convection or lid-driven cavity flows depending on the ratio between thermal and mechanical stirring, and three different cases are visualized in the linked videos.Comment: 2 video files attached, 4 pages, 1 figure. This article is submitted accompanying a video submitted to the Gallery of Fluid Motion as part of the 65th Division of Fluid Dynamics meeting of the American Physical Society (17-20 November, San Diego, CA, USA

Comparative systemic analysis of human immunoglobulin repertoires

The humoral immune system is majorly composed of B cells producing effector immunoglobulin molecules, the vast diversity of which allow for the neutralization of pathogenic threats never previously seen by the immune system. High-throughput sequencing technology has allowed this vast repertoire to be characterized and quantified, but understanding this complex system requires methods of comparison to identify and differentiate B cell populations. In this thesis, differences between groups of repertoires within individuals are analyzed at both the cellular and proteomic level. Novel experimental techniques and visualization methods will allow for the analyses of several such high-dimensional complex systems, leading to a fuller picture of the B cells’ contribution to the immune system.Microbiolog

Oral History Interview: Gregory W. King

This interview is one of a series conducted concerning the Marshall University Society of Yeager Scholars. At the time of the interview, Gregory W. King was president of King & Company, Advertising & Public Relations Experts from Lexington, KY. He discusses: his education; work he did at the 20th Century Fox New Talent School; his career in journalism; screenwriting and winning an Oscar; the founding of the Yeager Scholars program; the promotion and development of the Yeager program; individuals such as Carolyn Hunter, Joe Hunnicutt, Dale Nitzschke, & Chuck Yeager; and other topics.https://mds.marshall.edu/oral_history/1376/thumbnail.jp

The Role of an ABC transporter as a steroid antagonist in Drosophila

Drosophila melanogaster are holometabolous insects that have several distinct life stages including larvae and a winged adult. The larval stage is mainly a time of feeding and growth, while the adult stage is optimized for sexual reproduction and dissemination. The larval stage can itself be divided into three time periods, or instars: 1st (L1), 2nd (L2), and 3rd (L3) (Figure 1). Larval growth – both between instars and beyond – depends on specific signaling pathways controlled by a cholesterol derived steroid, 20-hydroxyecdysone (20E). Although 20E is a systemic developmental signal, little is known about the molecular details of how different tissues respond to the hormone. We have been studying one gene induced by 20E in some target tissues [1]. This gene, E23, encodes an ATP binding cassette (ABC) transporter protein that may function to limit hormone exposure in tissues where it is expressed

Children’s views on social distancing and playing on an adventure playground

Adventure playgrounds have provided an important play environment for children in the United Kingdom (UK) since the 1940s.  Twenty-five children ages from 4 to 13 were asked how they would play if social distancing was introduced on their adventure playground. Using Piagetian classification as a framework, responses from children in the pre-operational stage were compliant, whilst in the operational stage, children were compliant but explained how they would adapt their play. For the formal operational stage, the responses were confrontational. The importance of obtaining children’s views challenges the original ‘blanket’ policy guidance within the UK on social distancing for all children in outdoor environments including an adventure playground and considering how children play when with their peers is more social play

Behind the camera: sexual health testing patterns and outcomes amongst UK adult film performers

We report the frequency of sexually transmitted infections (STIs) diagnosed in UK adult film industry performers. A total of 100 adult film performers regularly screened for STIs on an average of every three weeks. High rates of condomless sex were reported and there were STIs recorded during the 19-year period covered by this study (1996–2015). STIs recorded included gonorrhoea, chlamydia, non-gonococcal urethritis, genital warts, syphilis and Trichomonas vaginalis

Second-order structure function analysis of scatterometer winds over the Tropical Pacific

22 pages, 16 figures, 1 tableKolmogorov second-order structure functions are used to quantify and compare the small-scale information contained in near-surface ocean wind products derived from measurements by ASCAT on MetOp-A and SeaWinds on QuikSCAT. Two ASCAT and three SeaWinds products are compared in nine regions (classified as rainy or dry) in the tropical Pacific between 10°S and 10°N and 140° and 260°E for the period November 2008 to October 2009. Monthly and regionally averaged longitudinal and transverse structure functions are calculated using along-track samples. To ease the analysis, the following quantities were estimated for the scale range 50 to 300 km and used to intercompare the wind products: (i) structure function slopes, (ii) turbulent kinetic energies (TKE), and (iii) vorticity-to-divergence ratios. All wind products are in good qualitative agreement, but also have important differences. Structure function slopes and TKE differ per wind product, but also show a common variation over time and space. Independent of wind product, longitudinal slopes decrease when sea surface temperature exceeds the threshold for onset of deep convection (about 28°C). In rainy areas and in dry regions during rainy periods, ASCAT has larger divergent TKE than SeaWinds, while SeaWinds has larger vortical TKE than ASCAT. Differences between SeaWinds and ASCAT vortical TKE and vorticity-to-divergence ratios for the convectively active months of each region are large. © 2014. American Geophysical Union. All Rights ReservedThe ASCAT-12.5 and ASCAT-25 data used in this work can be ordered online from the EUMETSAT Data Centre (www.eumetsat.int) as SAF type data in BUFR or NetCDF format. They can also be ordered from PO.DAAC (podaac.jpl.nasa.gov) in NetCDF format only. The SeaWinds-NOAA and QuikSCAT-12.5 data are also available from PO.DAAC. The SeaWinds-KNMI data are available from the KNMI archive upon an email request to [email protected]. Rain-rates and sea surface temperatures were obtained from the Tropical Rainfall Measuring Mission's (TRMM) Microwave Imager (TMI) archive at the Remote Sensing Systems web site (www.ssmi.com). SeaWinds Radiometer (SRAD) rain-rates were obtained from the QuikSCAT 25 km L2B science data product that is available from PO.DAAC. This work has been funded by EUMETSAT in the context of the Numerical Weather Prediction Satellite Applications Facility (NWP SAF). The contribution of GPK has been supported by EUMETSAT as part of the SAF Visiting Scientists programmePeer Reviewe

Exploring the Experiences and Adaptation Strategies of People Who Develop Work-Related Musculoskeletal Symptoms After Working from Home During the Coronavirus Pandemic

At the beginning of 2020, the COVID-19 pandemic brought many “new ways of life” to people everywhere. The transition from working in an office to working from home forced many individuals to adapt to a new normal. This capstone research study used qualitative case study methodology to provide a detailed look into the challenges and adaptive process of three employees working from home during the COVID-19 pandemic. This capstone study describes the lived experiences of individuals working from home and how they adapted in response to the onset of upper extremity musculoskeletal symptoms. Using the Theory of Occupational Adaptation, the researcher provides insight into the participants’ experiences, occupational challenges, level of dysfunction, and how they adapted, including physical, ergonomic, and psychosocial factors.https://soar.usa.edu/otdcapstones-spring2022/1051/thumbnail.jp

Exotic eigenvalues and analytic resolvent for a graph with a shrinking edge

We consider a metric graph consisting of two edges, one of which has length $\varepsilon$ which we send to zero. On this graph we study the resolvent and spectrum of the Laplacian subject to a general vertex condition at the connecting vertex. Despite the singular nature of the perturbation (by a short edge), we find that the resolvent depends analytically on the parameter $\varepsilon$. In contrast, the negative eigenvalues escape to minus infinity at rates that could be fractional, namely, $\varepsilon^0$, $\varepsilon^{-2/3}$ or $\varepsilon^{-1}$. These rates take place when the corresponding eigenfunction localizes, respectively, only on the long edge, on both edges, or only on the short edge.Comment: 17 pages, 1 figur

Dynamic Customer Acquisition and Retention Management

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/134194/1/poms12559.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/134194/2/poms12559_am.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/134194/3/poms12559-sup-0001-Appendix.pd