Women in STEM: Overcoming Discrimination, Bias, and Stereotype Threat

Despite the national level emphasis on the inclusion of women in STEM and the continued growth in STEM career sectors, the participation by women in these fields has remained relatively flat. This presentation will explore some of the social constructs that may help explain the disconnect

A Combinatorial Proof of an Identity of Andrews

We give a combinatorial proof of an identity originally proved by G. E. Andrews. The identity simplifies a mock theta function first discovered by Rogers

Reflections on three neophyte sport and exercise psychologists’ developing philosophies for practice

In response to the recent literature regarding the development of applied sport psychologists’ service philosophies (Lindsay, Breckon, Thomas, & Maynard, 2007), three neophyte psychologists take an autoethnographical approach to detailing how they developed their current philosophies. Using vignettes and personal accounts of their experiences they describe how reflection on their beliefs and values about people, behavior, sport, and change has underpinned their development as practitioners. The three authors detail how their delivery has developed from an approach that initially relied heavily on one framework into a more client-led approach that is more congruent with their beliefs and how this has in turn enhanced their effectiveness as practitioners. The implications of this reflective process for other neophytes is explored in relation to the experiences of the three authors

Goal adjustment by people living with long-term conditions: a scoping review of literature published from January 2007 to June 2018

Long-term health conditions can limit achievement of personal goals. We aimed to map and synthesize definitions of goal adjustment, theoretical underpinnings, associations with recovery and supportive interventions for adults with long-term conditions. We searched multiple databases (January 2007–June 2018) and identified peer-reviewed research relating to goal adjustment. Data were charted, mapped and synthesized using content analysis and descriptive summaries. Two stakeholder consultations informed the review. Ninety-one articles were included. A range of long-term conditions were represented including cancer (22%), stroke (12%) and mixed neurological conditions (8%). Goal adjustment was one available option when faced with unattainable goals; other options were goal disengagement and goal re-engagement. Most studies were quantitative (58%), reporting mainly positive associations between goal adjustment, disengagement, reengagement and recovery. The Dual Process Model, Goal Adjustment Model and Self-Regulation Theory were most cited underpinning models/theory. Five interventions were identified; only one (self-system therapy) was evaluated in a randomized controlled trial. Our review provides original and significant insights into goal adjustment definitions, theoretical underpinnings and association with recovery. Effective interventions to support goal adjustment, disengagement and reengagement are lacking. This research-practice gap warrants attention to ensure people with long-term conditions are optimally supported when facing unattainable goals

Ivory from early Anglo-Saxon burials in Lincolnshire – a biomolecular study

Ivory bag rings have been found in more than 70 cemeteries across southern, central, and eastern England dating to between the late-5th and 7th centuries AD. These rings are most frequently found in richly furnished female graves, and would have served as the framework for bags that hung at the waist. Debate over the source of this ivory has prevailed since the 19th century, with walrus and mammoth ivory considered as possible contenders to elephantid ivory. Recent excavations at an early Anglo-Saxon cemetery in Scremby, Lincolnshire revealed a number of elaborate female burials containing such bag rings. Using radiocarbon dating this study aimed to establish whether the rings were contemporary with the burials before seeking to identify the species of ivory through Zooarchaeology by mass spectrometry (ZooMS). Strontium analysis was also used to identify the place of residence of the elephantids at the time of tusk formation. Through a multi-methodological approach, we have established that the ivory used for the Scremby bag rings came from elephants living in an area of young volcanic rocks in Africa at some point during the 5th and 6th centuries AD. This preliminary evidence allows us to consider the networks and socio-economic factors that facilitated the distribution of ivory from Africa to the British Isles at this time

Stroke saturation on a MEMS deformable mirror for woofer-tweeter adaptive optics

High-contrast imaging of extrasolar planet candidates around a main-sequence star has recently been realized from the ground using current adaptive optics (AO) systems. Advancing such observations will be a task for the Gemini Planet Imager, an upcoming "extreme" AO instrument. High-order "tweeter" and low-order "woofer" deformable mirrors (DMs) will supply a >90%-Strehl correction, a specialized coronagraph will suppress the stellar flux, and any planets can then be imaged in the "dark hole" region. Residual wavefront error scatters light into the DM-controlled dark hole, making planets difficult to image above the noise. It is crucial in this regard that the high-density tweeter, a micro-electrical mechanical systems (MEMS) DM, have sufficient stroke to deform to the shapes required by atmospheric turbulence. Laboratory experiments were conducted to determine the rate and circumstance of saturation, i.e. stroke insufficiency. A 1024-actuator 1.5-um-stroke MEMS device was empirically tested with software Kolmogorov-turbulence screens of r_0=10-15cm. The MEMS when solitary suffered saturation ~4% of the time. Simulating a woofer DM with ~5-10 actuators across a 5-m primary mitigated MEMS saturation occurrence to a fraction of a percent. While no adjacent actuators were saturated at opposing positions, mid-to-high-spatial-frequency stroke did saturate more frequently than expected, implying that correlations through the influence functions are important. Analytical models underpredict the stroke requirements, so empirical studies are important.Comment: 16 pages, 10 figure

A Cacciopoli-Type Inequality to Prove Coercivity of a Bilinear Form Associated with Spatial Hysteresis Internal Damping for an Euler-Bernoulli Beam

We prove an inequality that resembles Cacciopoli inequalities in that it bounds the norm of the derivative of a function by using the norm of the function. Unlike in Cacciopoli inequalities, there is no restriction on the function, a fact made up for by adding an extra term to the norm of the function. The inequality arose in the proof that a bilinear form associated with spatial hysteresis internal damping for an Euler-Bernoulli beam is coercive

New Chairs Boot Camp

Many chairs take on their role without any formal training, which leads to frustration and dissatisfaction. We developed a boot camp to provide initial onboarding and orientation for new chairs. In this session, we provide an overview of our program, which focused on strategic enrollment management and department administration

Integrated Main Propulsion System Performance Reconstruction Process/Models

The Integrated Main Propulsion System (MPS) Performance Reconstruction process provides the MPS post-flight data files needed for postflight reporting to the project integration management and key customers to verify flight performance. This process/model was used as the baseline for the currently ongoing Space Launch System (SLS) work. The process utilizes several methodologies, including multiple software programs, to model integrated propulsion system performance through space shuttle ascent. It is used to evaluate integrated propulsion systems, including propellant tanks, feed systems, rocket engine, and pressurization systems performance throughout ascent based on flight pressure and temperature data. The latest revision incorporates new methods based on main engine power balance model updates to model higher mixture ratio operation at lower engine power levels

Slice-selective NMR:a non-invasive method for the analysis of separated pyrolysis fuel samples

Pyrolysis oil has been identified as a possible alternative fuel source, however widespread use is hindered by high acidity and water content. These negative characteristics can be mitigated by blending with, for example, biodiesel, marine gas oil and butanol. These blended samples can be unstable and often separate into two distinct phases. NMR spectroscopy is a well-established spectroscopic technique that is finding increasing application in the analysis of pyrolysis oil and blended fuels derived from it. Here, slice-selective NMR, where the NMR spectrum of only a thin slice of the total sample is acquired, is used to study, non-invasively, how the constituent components of blended biofuel samples are partitioned between the two layers. Understanding the outcome of the phase separation is an important step towards understanding why the blended oil samples separate, and may provide answers to mitigating and eventually solving the problem. The NMR method was successfully used to analyse a number of separated biofuel samples - typically separated into an oil layer, containing marine gas oil and biodiesel, above a bio-oil layer with a high water and butanol content